Resistive touchscreens used to play a very important role in touchscreen filed. Even though most of the market shares have been occupied by PCAP touchscreen and foldable touchscreen foil nowadays, but still there is an irreplaceable status in some of the applications for resistive touchscreen. below let’s try to reveal the 7 features of the resistive touch screen.
Work Through Pressure
Unlike other types or touchscreens, Resistive touchscreen works through pressure. It consists of 2 layers, Normally the Top layer is ITO Film and bottom layer ITO glass which separately by the dot in between. When you press the ITO film in the surface, which will make the ITO FILM and ITO glass contact .then the touchpoint creates. That’s is how resistive touchscreen works.
2. Can be touched by any objects, except sharp stuffs
Because of the feature of its working principle. resistive touchscreen can be touched by any objects like pen, fingers stylus, gloves etc , but you can not use the sharp objects to touch, as the touch surface is the ITO film which is easy to scratch. And when its scratched or broken will actually affect the touch effect.
Resistive touch screen is less sensible Compare with Pcap touchscreen. As resistive touch panel work by touch ,so sometimes if you press lightly, it may be unable to fell the touch and cause the touch sensibility not so sensible .
4. Single Touch
Resistive touchscreen can only support single point touch. Which Pcap touchscreen can support 10 point multi touch screen.
5. Calibration Needed :
Resistive touchscreen calibration principle: the resistance value of conductive ITO layer and the whole circuit will be slightly offset with time and voltage, etc. In order to more accurately correspond with the functional pattern on the LCD display screen, the standard position shall be recalibrated and calculated. Without calibration may cause linear offset
6. Available size :
Resistive touchscreen standard size range is from 3.5” to 22” which because of the raw material limitation so no bigger size available.
7.Dustproof & water proof
Resistive touchscreen is waterproof and dustproof, which is a very good application for outdoor and rough situation use.
Today the world is moving so fast in terms of science and technology. Every second, a new discovery is taking place all over the world in the column of computers and mechanization. Despite new discoveries, there are also ongoing processes for improving old technologies, touch screen mobile phones and digitalized trends. “TFT” Display is one of the latest innovation which helps to improve old display devices. The full abbreviation of TFT is “thin film transistor”. For our customers, we have gathered the most convenient and important information about TFT displays. Below you can find the desired information and knowledge about TFT displays and our products.
What is TFT Display and Working of TFT Display
As mentioned above TFT full form is “thin film transistor. This TFT display technology enhances the picture and color quality of old LCD Displays and monitors. The LCD screens use a crystal form of liquid which is used to display pictures to the spectator. The small transistors in a TFT LCD displayincrease the number of pixels. These transistors increase the number of pixels when LCD displays low-quality images due to the slow rate of fluid movement. The slow fluid movement usually causes blurry images in LCD which can be solved by using TFT transistors. TFT displays are nowadays used in home appliances, medical equipment, engineering instruments, airplanes computer devices, and TVs.
“Thin film transistor display” uses a range of complicated scientific and electronic properties which creates a high-resolution image on the screen. TFT display takes advantage of electrical energy. That electrical energy causes the liquid display to change its molecular arrangement. When the molecular structure of liquid display has changed, waves of light starts to pass through it using high speed. The mechanism of TFT display remains inconsistent flow, refreshing and changing again and again. It remains in the same consistent flow at the same speed until the signals have not been stopped, coming from a control device.
The board of TFT display uses many layers of filters, placed between two panes of glass. TFT board utilizes three/five different filters and layers determine how much light and which colors are being passed. These three or five filers and layers contain polarizer filters, color filters and different types of alignment layers. Several pixels of a TFT display is dependent on the depth of color matrix, TFT display structure, and mechanism. And of course, a higher number of the pixels in TFT display, higher the image quality and detail. Working on a TFT display also depends that what screen size and several pixels you choose for your TFT LCD display.
Advantages of TFT Display
There are uncountable and unique advantages of TFT LCD displays but for your information, some of are the following:
1. TFT displays are very famous for their amazingly clear, sharp and vivid colors. It will not be hesitating to say that this TFT technology displays colors and images extraordinary sharp and exquisite!
2. TFT displays consume a relatively low amount of electricity as compared to the power usage of monitors and LCD’s.
3. TFT display technologies are much smaller in size as compared to huge monitors. That’s why these types of displays are easy to handle and easy to travel.
4. The physical design and shape of TFT displays are surprisingly magnificent which is the main difference between TFT’s and monitors. Using TFT LCD displays have less stress due to high-quality images and ease of control.
5. TFT displays have high speed and response time which is highly suitable for the fast-growing industrial and digitalized world.
6. As we know that in our society there are steps taken to reduce greenhouse gas. These TFT displays are the lowest energy consuming that’s why reducing the greenhouse effect as compared to monitors and normal LCD’s. The secret behind consuming a very low amount of electricity in these TFT LCDs is their structure
7. These TFT displays don’t depend on examining of electron beams. As well as TFT LCD never displays unusual gleaming and flickers, free from geometric exaggeration and shows the sharp image.
7. These TFT displays don’t depend on examining of electron beams. As well as TFT LCD never displays unusual gleaming and flickers, free from geometric exaggeration and shows the sharp image.
9. TFT LCDs refreshes at a faster rate than regular monitors or normal LCDs.
Mitsubishi TFT Display Specifications: Mitsubishi is one of the world’s popular leader in the manufacturing of Liquid Crystal Display (TFT-LCD) products. These TFTs Attract the viewer by its wonderful images results and a wide range of in-house and open-air industrial usages. Its sizes exist in 3.5” – 19.2” and made in different variations of manufacturing applications. There are different sizes for use in cash machines and places of sales. Also use in industries mechanization apparatus, armed, etc. Its layout is tremendous authenticity that enhanced visibility
Utilization of Mitsubishi TFT Display:
• Aligning equipment.
• Cash Machines.
• Places of Sales.
• Industrial Mechanization Apparatus.
• Armed Forces.
Ortustech TFT Display Demonstration and Characterization: Mitsubishi TFT Display Specifications: Ortus Technology Offers short to intermediate sizes great peculiarity TFT LCDs. It also comprised brilliant slight daylight visible and interpreting with more than 30 years of industrial showing exercise. These TFTs are Particular in open-air industrial requirements such as manual terminals, industries mechanization apparatus, workshop robotics, and office paraphernalia. These are very popular due to its extreme bright weight, solid scheme casing and tap board choices. It has the proficiency to perseverance, edge forms an elongated device life spans.
• Hand terminals.
• Industries Showing Exercise.
• Analysis size apparatus.
• Workshop Mechanization.
• Official Apparatus.
Sharp TFT LCDs Details: The production is the best choice of customers. If you are searching TFT LCDs would be your optimal choice. These are strong, advanced, modern TFT LCDs. If you use this you will found it excellent result oriented and attractive by all aspects of your requirement. Sharp delivers steadfast, best class LCD units for a massive choice of propositions.
Sharp LCD technologies guarantee the uppermost visual presentation and firmness. These TFT LCD’s use extensive collection of regular LCD demonstrations for use in customer microchip technology. This is motorized, manufacturing mechanization, health home uses, hypermedia, and algorithmic signal requirements.
• Manufacturing Mechanization,
• Home-based Applications,
• Algorithmic Signal Requirements.
We have given here the best TFT LCDs from Eagle-Touch.com. As well as provide you much information, advantages, and about working of TFT LCDs. As an addition to your information, Eagle Touch Technologies was established in 2007. Eagle Touch Technologies is one of the biggest Tech company worldwide which have unlimited innovations in “touch technologies” till now.
A TFT LCD monitor is a short form of Thin Film Transistor Liquid Crystal Displays. The thin film transistors are used in a high-quality panel. Contrast and accessibility in a monitor is improved by the fact that the liquid crystal uses the thin film transistor for higher quality.
Thin film transistor liquid applies in devices. this occurs when an electronic field is used to give control to the current flow in which these devices used. this is known as the field effect transistors or the unipolar transistors. They contain thin films which are placed on individual plies of glass that fabricate glass units. There are various places where the TFT LCDs are used. They contain a transistor for each pixel. This enables illumination of the electric current to have a faster rate during the on and off switching action. It is evident that the contrast and brightness will be of high quality and the display motion will have a regular surface.
Where TFT LCD monitor are used
TFT LCDs also use active matrix technology for displays in laptops and even flat screen monitors. They offer to create a clear image with high brightness levels a pixel may produce. It is well managed by modification in an electrical charge. The color of a monitor in a pixel is also altered by electrical charges in a capacitor. They are also located in mobile phones, projectors, car instrumental clusters, direction navigation devices and systems, and even gaming devices. All these devices contain enough brightness, smooth visibility motion and also clear definition colors.
TFT LCD monitor promote the business in such a way that they are preferably used for work purposes. They are complex and use high quality and advanced technology providing a high-quality image and a smooth display on the screen. They are also light and thus can be placed on any place and moved around easily.
They can even be placed on a wall thus providing more space in your working area. This is an essential note to a business minded personnel. They are also cost-effective in terms of energy consumption. It is evident that they consume less energy in a very high standard. The fact that its illumination is clear suggests that they use a lot of pixels which have a lesser consumption of electricity. This would be of high importance mostly on companies in terms of resources management. They are highly adapting which as a graphic designer they are highly recommended. In terms of adaptability, I project that you can use two monitors in one device and avoid switching from one tab or window to another. This enhances fast working speed and accurate results to what you are working on.
In conclusion, TFT LCD monitor provide high and quality images and smooth illumination. The features of them having advanced technology and millions of pixel puts them a step forward of being more preferred. The fact that they are also business oriented and providing a great deal to business opportunists brings out a high quality in them.
The popularity of touchscreen technology has grown beyond the comprehension of man as it is used on smartphones, in homes, businesses, supermarkets, restaurants, mini-shops, etc. The utilization of the touchscreen technology is limitless and ever evolving. For a business owner who deals with daily trading or transactions, using the latest technology has its unique benefits. Amongst these technology being used in this contemporary epoch is the touch screen technology, and from it is the creation of the
Point of Sale (POS) touch screen technology
The POS touch screen technology is an evolution from the traditional POS system, which was seen by some as an upgrade from the electronic cash register and the credit card terminal. The POS touch screen technology offers better advantages to the traditional means of payment for retailers or just sales front.
The POS machine can be said to help improve transactions beyond the counter. To further ensure that the best is delivered to patrons or customers at every point of trade, it is necessary that businesses invest in these comfortable touch screen POS machines. In comparison to the old computers, the POS touch screen monitors technology offers diverse forms of limitless business advantages.
POS TOUCH SCREEN MONITORS in the business
The all-in-one POS touchscreen system offers users convenience, unlike the old forms of payment. With its functioning components, the POS touchscreen system enables users to feel comfortable by saving space and time while operating the machine. Unlike the old means like the cash register, for instance, the POS touch screen monitors with its flat screen feature is easy to clean, very light when carrying and not complex to understand. With these benefits, it is a system that makes avoids the transmission of germs, dirt, etc. that in turn, affects the user.
Also, accompanied by convenience is the increase in efficiency. Having the POS touchscreen machine is one of the most sophisticated tools for industries of diverse sectors. Just like the barcode scanner ease the search of a product on a computer, the POS system enables buyers of goods and services, adequate payments. Transactions are recorded adequately and thus would allow businesses to track their daily deals. It makes this technology stand out as it has recording features, unlike some old computers with Large-Screen Display (LSD) which requires massive hardware that was uneasy about moving.
Furthermore, another unique advantage of the POS touch screen system is the ability to reconfigure the system to suit the purpose by which it is used. Whether an individual is dealing with products with large or small quantities, the suitability of the system makes it meet the current and future needs. It merely means that the POS touch screen avoids lag and choosing the right system from the world’s leading supplier of touch screen technology, Eagle Touch, ensures that patrons have the best software for their needs.
With the few stated advantages listed above, why not contact us for that amazing technological benefit, the Point of Sale Touchscreen. They are affordable for small and medium scale businesses, comes with different models that are readily available for users. Also, this particular touchscreen technology is observed to be an innovative creation that can be used for wireless transactions. The Point of Sale (POS touch screen monitors) touchscreen system is the right way of meeting your business needs, why not get one today?
As we all know, the bonding method for common TFT LCD and touch screen on the market are divided into two ways: Air bonding and Direct bonding. If a person who doesn’t understand these two terms certainly doesn’t know the difference between them, or what kind of advantages and disadvantages they all have, let’s briefly explain below:
Direct Bonding features: resistive touch screen manufacturers
Directly bonding is a way bonding protect glass, TFT LCD and Touchscreen completed together in a seamless way, omitting the air layer existing between the display screen and the touch screen, making the screen thickness thinner. The visual effect is perfectly presented, it looks more beautiful, reduces the chance of getting into the gray, the picture is more transparent which enhances the display effect, and makes the screen thinner. It seems that the direct bonding is more aesthetic and practical. However, the direct bonding technology yield is lower , the cost is relatively expensive, and once damaged, the entire screen needs to be replaced. Resistive touch screen manufacturers
Air Bonding Features:
What about the air bonding then? The air
bonding is to use double-sided tape to fix the touch screen and the four sides
of the display panel, and there is a gap between the display panel and the
touch screen with air filling, the operation is relatively simple, and the
process is relatively mature. Mature technology plus stable yield rate gives
the biggest advantage of air bonding, as well as cheaper and simpler
replacement. It also has a feature that the screen is thick and the overall
body cannot be thin. There are gaps, and dust is the biggest enemy that exists.
In addition, the reflective surface of the panel and the glass are more
obvious, and the display effect is relatively poor.
Through the above content, I believe that
everyone understands the difference between the two bonding methods. compare
with air bonding the direct bonding is much more better from the display effect,
to the appearance of the screen, and the gap dust,
Think about your audience and be clear about your goals
Benefits of using touch screen technology
Types of Touch Screen- Touch screen manufacturers
4 Wire Resistive Touch Screen
5 Wire resistive touch screen
Projected Capacitive touch screen
Features to consider while choosing the touch screen panel
How Eagle Touch is helping businesses?
Whenever a new technology enters into a market then there is a cut-throat competition between businesses. They try to adopt the technology before anyone else to keep themselves ahead of the rivals. This creates an urgent need for a business to decide the adoption of the right technology at the right time.
Touch screens are changing the world in different ways. Businesses have started adopting this technology at a large level and touch screen manufacturers are fulfilling their ample demands quite well. The touchscreen is playing a crucial role in our day-to-day life. Smartphones, batteries, cars, laptops, and many more devices contain a touch screen as the main input device. It helps in interacting with what is being displayed. Gone those days when people had to enter instruction with the help of buttons. Also, there is a huge demand for the device that comes equipped with a touch screen function.
Thanks to the Touch screen manufacturers in making our life easier. However, for a business, it’s a complicated task to choose the right touch screen. The choice depends on certain factors such as the kind of product you are offering and how your business will satisfy customers need? Do the product you are going to offer will be used in a harsh environment? The answers to the questions like this will help you in choosing the right touch screen for your product. In addition, it is important to know the various types of existing touchscreen technology. Resistive and Capacitive touchscreen is widely known and used by the businesses. Touch screen manufacturers design these touch screens with perfection.
Think about your audience and be clear about your goals
The existence of your business clearly depends on your potential to satisfy customers and retain them. Knowing the reason behind the need of touch screen will aid in the selection of a suitable touch screen technology. Also, knowing the purpose is important whether you want to raise aware people, pass information, educate or generate leads. You should know what experience you want to provide to customers.
Benefits of using touch screen technology
There are numerous benefits to using touch screen technology. Businesses can increase their revenue by applying touch screen technology appropriately. It can also be useful in providing a good customer experience. Apart from that, it’s an interactive technology that delivers an attractive user interface. Traditional methods of interaction with devices were boring because it was time-consuming. Touch screen technology saves our time as we run devices with our fingertips. This technology is a lot helpful to physically challenged people. Moreover, one gets to experience real interaction in the devices such as laptop, tablet or smartphone.
Types of Touch Screen- Touch screen manufacturers
There are four main types of touch screen technology that includes resistive, capacitive, SAW and infrared. Let’s explore them in detail.
1) Resistive touch screen– From the name, you can gain the idea that it has a resistive touch. Resistive touchscreen panels are composed of distinct thin layers. The screen works by applying pressure onto it. This touchscreen comes in different models like 4 wired and 5 wired resistive screens. Today 6, 7 and 8 wired resistive screens are also available. The outer layer of the screen is flexible and coated inside while the bottom layer is made rigid. And between them, there is a gap containing insulating spacer dots. When someone presses the top layer then both of the layers touch and gets connected.
• The applications of resistive touch screen included in the restaurant, control panels, industrial automation, voting terminals, POS (point of sales), etc.
• One of the advantages of using this touch screen technology is that it consumes less power and aren’t expensive.
• You can use stylus, pen or even gloved hand to activate the screen. The only disadvantage is the low image clarity that it provides in comparison to the other touch screen technologies.
• Additionally, the outer film is made of polyester that can get damaged by scratching, poling or coming in contact with sharp objects.
2) Surface Acoustic Wave- SAW technology works because of ultrasonic waves. The problem with using this touch screen is that it is easily damageable by the elements present outside. Contaminants can also affect the proper functioning of the touchscreen functionality. Piezoelectric transducers in series and receivers are used. These are present on the side of a monitor’s plate that produces invisible ultrasonic waves on the surface. When someone touches the panel then a portion of a wave is absorbed. With the help of the receiving transducer, the touch point is located and the data is sent to the computer. There are some important benefits of using SAW.
• It can’t be operated with hard materials like a pen.
• Any amount of water when fall on it will cause false-triggering.
• The screen can stop working at those points where solid particles are residing.
3) Capacitive- Capacitive touch screens are of two types including surface and PCAP (Projected Capacitive). It contains an insulator like glass. This glass is then coated with a transparent conductive material like ITO (indium tin oxide). In projected capacitive, artificial intelligence is used that enables accurate sensing with the help of thick glass. It was first made by Ronal and Malcolm Binstead in 1984. They invented a capacitive touchpad containing 16 key. The PCAP can be operated by the gloves of cotton or surgical gloves. People can input data using two fingers at the same time (multi-touch). ). In the market, surface capacitive is the second most popular touchscreen panel. These panels consist of a transparent electrode layer placed on top of a glass panel. It is then covered by a protective layer. The screen reacts to the static electrical capacity of the human body when touched. Do you know by using a touch screen foil (PCAP touch technology), you can change any acrylic and glass surface into a touch screen?
4) Infrared- Infrared involves the use of IR emitters (X-Y infrared LED) and photodetector pairs. An invisible grid of light is created across the screen that results in the production of a high-quality image.
After knowing everything about the touch screens, your next step will be to find the correct hardware according to the business needs and of course a touch screen manufacturer that will meet your needs… How much space do you need on the touchscreen? If you have the answer to this question then that’s great. To run your business effectively and efficiently, hardware features matters a lot.
• The cable management should be done properly in the hardware.
• Serial, as well as a USB touch interface, are there are working properly.
• There must be hidden place in the base of the hardware for an external power supply.
• The hardware must be able to display MSR.
• The hardware should also show rear customer options.
Features to consider while choosing the touch screen panel
Every touch screen has pros and cons. A touch screen suitable for one place can have no use at the same place. Thus, your selection should consider hardware features, touchscreen size, touch accuracy, resolution, timing in responding, clarity, life expectancy, environmental conditions, etc.
• Touch Size: Touchscreens comes in three sizes small, medium and large. The sizes of the monitor can vary from 3.5-inch to 52-inch in size. It is necessary to check the size of the touchscreen panel. Full-color TFT LSD(Thin Film Transistor Liquid Crystal Display) ranges from size 1.44 inch to 5.0 inch.
• Accuracy: The touch performance must be excellent and able to provide accurate touch response.
• Resolution: The resolution is the number of touch points on the touch panel. The greater the resolution, the higher will be touch points. Also, there’s another resolution known as pixel density. This should be considered too.
• Response: The touch panel must have the potential to respond quickly. The response time is measured in milliseconds (ms). According to a study, human being requires the latency of 10 ms or less than that for comfort. SAW screens respond quickly with the response time of around 10 ms and IR takes 20 ms.
• Clarity: Being at the top of the display, the quality of the image gets interrupted by the loss of light. Resistive screens the poorest in producing clarity in the image.
How Eagle Touch is helping businesses?
Eagle Touch is serving its customers by providing high-quality touch screen for touch monitors, smartphones and many more devices. It is providing an innovative solution to fully satisfy your business needs. It’s a leading touch screen manufacturer in China and exported to various parts of the world. It offers products like TFT displays that are exported to Japan. There is a broad range of products to buy and escalate your business. We want to grow by assisting businesses in serving what they need. The products are completely reliable and easy to buy. The customer service support is available for you whenever you need. Eagle Touch is specialized in the production of TFT displays, 5-wire and 4-wire resistive touchscreen, LSD display, projected capacitive screen and many more. They are one of the best touch screens manufactures.
Eagle touch makes sure that its customers are satisfied with the products it delivers. It can only provide your needs. It’s you who has to choose the perfect blend oftouchscreen technology for your business. The mere knowledge of touch screens will not help. It’s also important to know what you will serve your customers overall.
To many foreigners it is not an easy job to find a trustful touchscreen manufacturer, Most of them find their suppliers through google , alibaba, made in China etc B2B platform, but how to choose the right one among thousands of suppliers. As a worker in the computer hardware industrial, here are 3 Tips I need to share with you about how to find the trust Industrial Touch Monitor/ Open frame supplier in China.
Usually, for a typical touch screen monitor or an open frame touch monitor is composed of a metal /plastic Chassis, a TFT LCD module, a Touch screen and LCD Controller board.
1. Check the appearance
A compact and professional structure design brings you not only good appearance but also functional optimization. a good designed structure chassis the appearance must be tightly fit . Touchscreen manufacturer
TFT LCD quality is the fact affect the cost mostly, You may check from the market and find out there are really big price difference for the same size and parameter monitor. Why has this happened? it may be the design, different brand, but also there is another secret for the TFT LCD. There are 3 types of LCD can be chosen.
No.1. Original brand new TFT LCD. No.2, used TFT LCD, No.3 .for some size, there will be also Chinese assembly TFT LCD available.
So the price difference is from the chosen of different TFT LCD Type.
You can ask your touchscreen manufacturer to confirm which type of TFT LCD they are using while they quote you .so that you can choose the suitable one you need.
Low Price is not everything but cost performance.
Sometimes customers are always looking for the cheapest products but forget about the quality, the touch screen monitors you are buying is not for using a moment. But 3-5 years at least. So reliable quality is more important for you. To learn with your supplier what materials they are using get to know the products you are buying that ‘s the key points.
Eagle Touch as a professional Touch Monitor touchscreen manufacturer, we aim to be Honest and Professional to our customers to provide what exactly what you need!
As there are more resistive touch screen suppliers on the market which make resistive touchscreens more popular and prices are falling down, so that resistive technology is becoming more widely used. In order to choose the best touch screen technology, application designers must consider the application requirements. Resistive touch screen technology requires only a simple printed circuit board design, unlike capacitive and inductive touch screen technology, which requires electrode or coil etch on the printed circuit board. Because the touch screen is directly overlaid on the display, so that the printed circuit board space required for mechanical switches or capacitive touch key electrodes can be saved. Resistive touch screens are not recommended for use in harsh environments, such as mines or work sites that are often exploding or dusty. Little damage on resistive touch screens can affect touch accuracy and linearity.
1.The working principle of resistive touchscreen:
1. A resistive touch screen is a transparent glass panel with a surface covered with a touch-responsive film.
2. The resistive touch screen panel consists of two resistive layers (ITO) and separated by the dot in between.
3. The two thin film layers of the resistive touch screen form a resistor network that acts as a voltage divider for the touch position detection function.
4. The touch screen causes a voltage change on the voltage divider formed by the resistor network. This voltage is used to determine the contact position of the touch screen.
5. The touch screen controller (TSC) converts the captured analog voltage signal into a digital touch coordinate signal. A built-in analog-to-digital conversion channel acts as a voltmeter for measuring analog voltage.
6. After touching the screen, the touch controller functioning as a voltmeter first applies a voltage gradient VDD at the X+ point and a ground voltage GND at the X-point. Then, the analog voltage on the Y-axis resistance is detected, and the analog voltage is converted into a value, and the X-coordinate is calculated using an analog-to-digital converter. In this case, the Y-axis becomes a sensing line. Similarly, the Y coordinate can be measured by applying a voltage gradient at the Y+ and Y-points.
7. Some touch controllers also support touch pressure measurement, or Z-axis measurement. When measuring the Z-axis coordinates, a voltage gradient is applied to the Y+ axis and the X-axis.
2.The 3 types of resistive touchscreen.
According to the number of sensing lines on the touch screen, the resistive touch screen can be further divided into three categories: 4-wire resistive touchscreens, 5-wire resistive touchscreens and 8-wire resistive touchscreens . The strip electrodes of the 4-wire touch screen are mounted on two different resistive layers (X+, X- are on the same layer, Y+, Y-the other resistive layer). The 5-wire touch screen has only round electrodes (X+, X-, Y+, and Y-) on the bottom layer. The top layer is used to measure the voltage during the touch process and the voltage gradient is applied only to the bottom layer.
The 8-line touch screen works like a 4-wire touch screen. Just add a reference voltage line to each line, so the final number of buses reaches 8. The new four lines are used to provide reference voltages to the original four lines. The 8-wire touch screen uses the measurement principle of a proportional measurement analog-to-digital converter.
Because of its low cost and simple touch sensing algorithm, 4-wire touch screens are widely used in low-end consumer electronics. 5 wire and 8-wire touch screens are used primarily for expensive high-end medical equipment and important industrial controllers. Eagle Touch as an experienced touch screen manufacturer we provided both 4 wire resistive touchscreens and 5 wire resistive touchscreens.
The resistive touch screen works in an environment completely isolated from the outside world. It is not afraid of dust, moisture and oil. It can be touched by any object and is suitable for industrial control. The disadvantage is that because the outer layer of the composite film is made of film, too much force or sharp touch may scratch the touch screen which will be unable to work anymore.
The capacitive touch screen has a high resolution and a good light transmittance, which can well meet various requirements. This type of touch screen is common in public places. However, the capacitive touch screen uses the human body as an electrode of a capacitor. When a conductor is close to and a sufficiently large capacitance is coupled between the ITO working surface of the interlayer, the current flowing away causes a malfunction of the capacitive touch screen; There is no response when touched with gloves or a hand-held insulating object because of the increased insulation medium.
The infrared touch screen determines
the touch position by measuring the on and off of the infrared light,
regardless of the material of the transparent baffle selected for the touch
screen (some have no baffles at all). Therefore, the use of a baffle with good
light transmission properties, and anti-reflective treatment, can get a good
visual effect. However, due to the limitation of the volume of the infrared
emission tube, it is impossible to emit high-density infrared rays, so the
resolution of such a touch screen is not high. In addition, since the infrared
touch screen relies on infrared sensing to work, external light changes, such
as sunlight or indoor lights, can affect its accuracy.
The surface acoustic wave technology is
very stable, and the controller of the surface acoustic wave touch screen
calculates the touch position by measuring the position of the decay moment on
the time axis, so the accuracy is very high. The surface acoustic wave touch
screen also has a third axis (z axis), that is, a pressure axis – the amount of
power that the user touches the screen can be obtained by calculating the
amount of attenuation at the attenuation of the received signal, which can be
divided into up to 256 levels of force. The greater the power, the wider and
deeper the attenuation gap on the received signal waveform. Of all the touch
screens, only the surface acoustic wave touch screen has the ability to sense
According to the analysis of the structure,
principle and performance characteristics of the touch screen, the applicable
occasions of different touch screens are as follows:
4 wire touch screen: not afraid of dust, oil and photoelectric interference, fear of scratch is its main defect. Applicable to public places with fixed users, such as industrial control sites, offices, homes, etc.
5-wire resistive touch screen: excellent sensitivity and transparency, long service life, not afraid of dust, oil and photoelectric interference, suitable for all kinds of public places, especially suitable for sophisticated industrial control sites.
Eagle touch as one of the resistive touchscreen manufacturers in China, we provide both resistive touchscreen and Pcap touchscreen.
A TFT LCD (liquid crystal ) means that each liquid crystal pixel on the liquid crystal display is driven by a thin film transistor integrated therein. This enables high-speed, high-brightness, high-contrast display information. Each pixel of the medical TFT LCD device is controlled by a TFT integrated on itself, which is an active pixel. Therefore, not only the speed can be greatly improved, but also the contrast and brightness are greatly improved, and the resolution is also at a very high level.
Technical characteristics of TFT LCD
TFT technology was developed in the
1990s.which is the basic of the flat panel display.Large-scale semiconductor
integrated circuit manufacturing technology using new materials and processes
is a liquid crystal (LC), inorganic and organic thin film electroluminescent
(EL and OEL). Its main features are:
Large size: In the early 1990s, the first generation of large-size glass substrate (300mm × 400mm) TFT-LCD production line was put into production. In the early of 2000, the size of glass substrate has been expanded to 680mm × 880mm), and the recent glass substrate size 950mm × 1200mm glass also be put into operation.
Powerful: TFT was
first used as a matrix addressing circuit to improve the light valve
characteristics of liquid crystal. For high-resolution displays, precise
control of the object elements is achieved by voltage regulation in the 0-6V
range (typically 0.2 to 4V), enabling high-resolution LCD displays.
Low cost: The glass
substrate and the plastic substrate fundamentally solve the cost problem of
large-scale semiconductor integrated circuits, and open up a broad application
space for the application of large-scale semiconductor integrated circuits.
Flexible process: In
addition to film formation by conventional processes such as sputtering and CVD
(Chemical Vapor Deposition) MCVD (Molecular Chemical Vapor Deposition), laser
annealing technology is also applied, which can be used to make amorphous or
polycrystalline films. A single crystal film is produced. Not only silicon
films but also other II-VI and III-V semiconductor films can be fabricated.
Wide range of applications, LCD flat panel
display based on medical TFT LCD device technology is the pillar industry of
the information society, its technology can be applied to the rapidly growing
thin film transistor organic electroluminescence (TFT-OLED) flat panel display
The screen is also growing rapidly.
TFT LCD features:
With the maturity of TFT technology in the early 1990s, color LCD flat panel displays have developed rapidly. In less than 10 years, TFT-LCD has rapidly grown into a mainstream display screen, which has its advantages and is inseparable. The main features are:
characteristics: low voltage application, low driving voltage, solidification
safety and reliability improvement; flat, thin and light, saving a lot of raw
materials and space; low power consumption, its power consumption is about CRT display
One-tenth, the reflective TFT-LCD is only about one percent of the CRT, saving
a lot of energy; TFT-LCD products are also available in specifications, sizes,
and varieties, and are easy to use, flexible, and repairable. , easy to
upgrade, long service life and many other characteristics.
Good environmental protection characteristics:
no radiation, no flicker, no damage to the user’s health. In particular, the
emergence of TFT-LCD e-books will bring mankind into the era of paperless
office and paperless printing, which will lead to a revolution in the way
humans learn, spread and remember to cultivate civilization.
Touchscreens are everywhere now in our daily life which turns our life and work more convenient, For example, in the morning you go to Mcdonald’s to order breakfast, you no need to queue up and can directly order from the kiosk machine which can save your time. Then you take the subway to go to work, you can get the ticket from the tickets machine and night time go to a cinema watching a movie you need also get the ticket first in the vending machine. Also, our mobiles are totally touchscreens. You need to use them every day So actually, the touchscreen is a part of our life both in public and private.
Eagle Touch, As a professional Touchscreen and Touchscreen Monitor provider, Today, we are talking about how to find a suitable touchscreen monitor for your business, and what’s the main factors you need to consider:
To learn a Touchscreen monitor we need to start from a touch screen. First of all, we need to know what’s a touch screen and how many types of touch screen we have now?
A Touch screen is an input device which replaced a mouse and keyboard, you can interact with the computer by touching the screen. Touchscreen was invented by E.A. Johnson in 1965 in the UK, in the early 1970s, Touchscreens began to appear in some industrials and commercial equipment such as POS Terminals, Elevator buttons and so on, After that, Nokia introduced the resistive touchscreen to mobile phone which partially replaced the keyboard and resistive touch technology started to be widely used in many commercial applications such as CAR DVD, PDA ,POS, KTV applications. Until 2007 Apple launched the first Capacitive touchscreen mobile phone which opened a new touch screen era and brings the future touch technologies unlimited possibilities. Until early 2019, PCAP touch screen is occupied most of the touchscreen market share.
There are mainly 5 types of touch screen
Today the most widely used touch Technologies are RTPs and PCTs .Let’s back to touch screen monitors, so what’s the main factors we need to consider to choose the best TSM for your business?
First thing we need to consider is what industrial will be used this touch screen monitor.
This is a very key factor to consider for selecting the suitable TSM, different demands and specifications are required for different applications and using environments. For example, will it to be used as a standard desktop monitor or wall mount monitor? Shall this Touch screen monitor need to be embedded to equipment? Because that’s related to which types of monitors you will use:
There are two types of monitors, one is a complete monitor with case you can use as desktop or wall-mount, the other one is open frame monitor without Bezel, mainly embed to a bare metal enclosure, this Open frame monitor is widely used in many embedded applications such as kiosk, ATM machines, Industrial automation equipment, Vending machine displays, gaming machines and so on.
Check your application, if you need is a complete Touch monitor or an open frame touch monitor to embedded to your equipment.
The other most important decision in selecting TSM will be the type of touch technology you use, as we saw above there are varieties of touch screens for choosing. But the most common types are Resistive Touch Monitors andProjected Capacitive Touch Screen Monitors.
A resistive touchscreen monitormeans the display install resistive touch panel, it consists of two ITO layers reply on the pressure to register an input, the advantage for RTP Monitor is support all kinds of stylus input and very good options for those environmental needs to wear gloves. But resistive touch monitors only support single touch, and the surface it easily scratches and damaged, the Transmittance for resistive touch displays is only around 75% ~80%, and the stability for 5 wire is better than 4 wire TP.
Projected Capacitive Touch Screen Monitor we also called PCAP OR PCT monitor, which make a touch by sense conductivity, you can use your fingers or any other conductive objects to touch, PCT touch monitor is already occupied most of the market because of its reliability, sensitivity, durability, and Multi-Touch features. The Transmittance is over 85%.
In addition to application and touch technology, TFT LCD specification is of one the main factor you need to consider, Display effects mainly depends on the TFT LCD. There are the parameters below you need to consider:
Size& aspect Ratio: Touch screen monitor screen size range normally from 3.5” to 75” for different applications. With an aspect ratio (the proportional relationship between width and height) of 4:3 or 16:9. You can choose the right size and ratio based on your application. Normally the most usual size for commercial use is 15.6” .18.5” 21.5” .23.8” 32” 43” and for instead 8.4” ,10.4” 15” 4:3 ratio for industrial application.
Resolution: the display resolution is the precision of the screen image, which is how many pixels the display can show. The higher the resolution, the more detail the better image has. So display resolution is a very important performance. But to be remembered. Resolution is not higher is better. Especially for industrial application. Always remember the more suitable the better.
Brightness: Brightness is the perceived intensity of light coming from a screen. high brightness also means the higher anti-interference ability to its working environment. It means for the outdoor application you need to use a higher brightness screen.
Display input: The display interface refers to the interface between the graphics card and the image output device of the display. The display most normal interface has DVI interface, HDMI interface, VGA interface, check to see what types of interface you want for your TSM and where to locate.
Mounting Options include VESA mount standard
75/100, panel mount, rack mount and free-standing. If free-standing, it can be
sure that it uses a heavy-duty stand designed for monitor; standard table top
bases will topple over.
Above are the main factors you need to consider before your select a touchscreen monitor. If you don’t know which one or what type to choose. Contact with us. tell us your application and working environment. Eagle Touch engineers will help you to find the most suitable and cost-effective one. As TSM is not a cheap and one time used product .it should not be overlooked. Quality is always TOP 1 we need to careful. Otherwise, your business may be affected by inefficiency and low-productivity. Pay attention to the above factors. Try to avoid your loss aiming to benefit your business in the short or long run.
Resistive Touch screen has been popular around in 2003, when single touch mobiles were popular. the main application for mobile phone and Car DVD . The touch screen factories in China were rapidly growing.at that on the market mainly producing 4 wire and 5 wire resistive touch screens. Even now in 2019 for some industry Resistive touch screen are still the first choice because of cost-effective, durable, waterproof, dustproof, versatile solution features. When you ask for price from the Manufacturer,we know that for the same size touch screen, 5 wire resistive touch screen will be more expensive than 4 wire. So What’s the main technical difference between 4 wire and 5 wire touch screen ?
4 wire touch screen is a 2 layer structure that’ s consisted of a ITO conductive film in upper layer and ITO conductive glass or film in bottom layer which are separated by extremely small, transparent spacer dots. The 2 layers are coated with a resistive substance called ITO, when the ITO film is pressed down, and the 2 layers are contacted, That results the electrical contact, producing the voltages. It presents the position touched.
One of these layers contains electrodes in
the Y direction, whereas the other layer contains electrodes in the X direction
The two layers are designed to measure the voltage created by the opposite
To get the “X”
touch position, the controller sets Pin4 to +5V and Pin2 to GND (0V). Pin1 is
left unconnected. The controller uses Pin3 to read the voltage where the top
layer meets the bottom layer. The controller converts the voltage to a number
(data) and sends it to the host computer.
To get the “Y” touch position the
controller sets Pin1 to +5V and Pin3 to GND (0V) Pin2 is left unconnected. The
controller uses Pin4 to read the voltage where the top layer meets the bottom
layer. Again, the controller converts the voltage to a number (data) and sends
it to the host computer.
Notice that some pins switch functions
depending on if the controller is looking for a X-touch or a Y-touch position
The controller reads the X and Y position many times per second so the user may
move his stylus (or finger) rapidly across the touch screen and the data will
be captured. This provides smooth operation and allows drag-and-drop or
the 5 wire resistive touch screen also consists of a conductive glass bottom layer and conductive top film layer. The fundamental difference between the two is, in the 5- wire resistive touch screen construction, all the electrodes are on the bottom layer and the top layer acts as a voltage-measuring probe. With this structure, the touch screen may still work properly even when the top layer is slightly scratched or damaged. The result is an accurate, durable and reliable touch screen that offers a higher touch life.
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