With the growth of smart devices, the application of touchscreens is getting closer and closer to our life. Various electronic devices, vehicle tools, daily entertainment equipment, shopping navigation equipment, etc., and the LCD touchscreen has already been integrated into our daily life. When we meet various touch technologies and choose a device with a touchscreen, many questions often arise. What are the advantages of touch displays, and how to choose a better one? Today I will show you a brief introduction to 5 common types of touch screens, as well as their advantages and disadvantages.

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According to the touch principle, touch screens can be divided into five basic types: capacitive touchscreens, resistive touchscreens, infrared technology touchscreens, surface acoustic wave technology touchscreens, and low electromagnetic guidance touchscreens. In fact, there are four types of touch screens that we often come into contact with at present, they are resistive touch, capacitive touch, infrared and surface acoustic wave touch. We mainly introduce the differences between these 4 types of touch displays.

1: Capacitive Touchscreen

The technology of the capacitive touch is inseparable from the human body. It needs the mutual induction of the human body current and the ITO conductive layer to work.

First of all, the capacitive touch has 4 layers of glass. The inner surface of the glass and the interlayer are each coated with a layer of ITO. The outermost layer is a protective layer of silica glass. The interlayer ITO coating is used as the working surface, and the electrodes are respectively drawn out from the four corners. when there is a touch with the human body, the finger and the working surface form a current, and the current flows out from the electrodes on the four corners of the touch screen, and the electrodes can sense the change of the surface charge and then determine the coordinates of the touch point. Capacitive touchscreens require only touch, not pressure.

Pros of Capacitive Touchscreen

1. The capacitive touch has fewer corrections working after production, which can improve work efficiency and reduce the generation of defective products;

2. Long working life;

3. Light transmittance and clarity are better than the resistive touchscreen;

4. Capacitive touch is easy to design on large-size LCD display and the cost is relatively low;

5. Can support multi-touch technology.

Cons of Capacitive Touchscreens

1. When a large-area palm or a handheld conductor is close to the capacitive touch display, even if there is no touch on the screen panel, it can also cause a touch action on the display panel;

2. For objects such as wearing gloves or holding an insulating object, the touch does not work, because the insulation medium is added, and the touch point will move;

2. The light transmittance of the capacitive touch screen is not uniform, and there is a problem with color distortion. Due to the reflection of light between the layers, the image characters will be blurred;

4. When the ambient temperature and humidity change, it will cause the capacitive touch point to move and the touch will be inaccurate.

2: Resistive Touchscreen

A resistive touchscreen is a type of touchscreen that uses pressure sensing for control.

It uses two layers of ITO (Indium Tin Oxide) plastic film (ITO+Glass) coated with conductive function. The side of adjacent to the film and glass are all coated with ITO coating. When there is no pressure, there is a gap between the two layers of ITO, and the certain gap is in a non-conductive state. When there is pressure, whether it is human finger pressure or object pressure, the two ITO layers will contact to form a current signal, and then convert the corresponding pressure point by detecting the X-axis and Y-axis voltage changes to complete the touch processing of the entire screen mechanism.

Pros of Resistive Touchscreens

1. Mature technology, low cost;

2. Good environmental adaptability, no worry about the influence of dust, water vapor and oil pollution;

3. Good stability, both the human body and objects can be touched;

4. The precision of the resistive touch screen is high; it is easy to design on a large resolution LCD screen;

Cons of Resistive Touchscreens

1. The touchscreen is easily scratched and the makes the touch is unavailable;

2. Poor light transmission, easy to increase battery consumption;

3. When multi-touch is used, due to unbalanced pressure, the tactility is not good, and the touch point will be incorrect;

4. Relatively low touch sensitivity.

Click this to check the Difference Between Resistive Touchscreen and Capacitive Touchscreen.

3: Infrared  Touchscreen

The infrared touchscreen is easy to install, just add a light spot distance frame on the LCD display panel, no need to coat any IoT. The infrared touch display uses the dense infrared matrix in the X and Y directions to detect and locate the touch point. When the user touches the screen, the touching object will block the two horizontal and vertical infrared rays passing through the position, so as to obtain the position of the touch point to realize the touch. Any touching object can change the infrared rays on the contacts to realize the touch screen operation.

Pros of Infrared Touchscreen

1. The infrared touchscreen is not affected by the current, voltage and static electricity;

2. Low price, easy installation, no need for any controller;

3. Compatible with computers of various grades.

Cons of Infrared Touchscreen

1. Difficult to use on large size LCD screens;

2. Easily disturbed by external light,

3. The infrared touch screen is not waterproof or oil-proof, and any small foreign objects will cause errors and affect its performance.

4. Surface Acoustic Wave Touchscreen

The touch screen part surface of acoustic wave touch can be in a flat, spherical or cylindrical glass plate, a piece of glass installed in front of the CRT, LED, LCD or plasma display screen. This glass has been strengthened and specially treated, and it is installed on the surface of the display. Vertical and horizontal ultrasonic senders are installed on the upper left and lower right corners of the glass, and ultrasonic receivers are installed in the upper right and low left corners. when the finger touches the glass surface, the finger absorbs part of the sound wave energy, the controller records this anomaly and calculates the position of the touch point.

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Pros Surface Acoustic Wave Touchscreen

1. High clarity and good light transmittance.

2. Highly durable, good scratch resistance and responsive.

3. Not affected by environmental factors such as temperature and humidity, high resolution, and long prolife;

4. High light transmittance, can maintain clear and bright image quality;

Cons of Surface Acoustic Wave Touchscreen

1. Applicable to smaller screens, hard to use on larger screens more than 30 inches;

2. Susceptible to moisture damage, so not suitable for many industrial and commercial applications;

3. Dirty surfaces can cause dark spots on the screen and require regular cleaning

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Introduced so much knowledge about touchscreens, we provide customers with personalized LCD TFT display solutions, we provide different touch technology TFT LCD panel customization according to customer requirements, and design touch solutions that meet the requirements according to user application scenarios, such as different material glove touch, water environment touch, saltwater environment touch, hover touch, 3D (force) touch, haptic touch, etc. Orient Display can also provide very low cost fixed area button touch, single (one) finger touch, double finger (one finger+ one gesture) touch, 5 finger touch, 10 points touch or even 16 points touch.

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Top 10 Advantages and Disadvantages of Capacitive Touchscreen

When you use touch phones and POS devices, have you ever wondered why you could control them by touch? Yes, capacitive touch screen technology can achieve these functions. Now let's read the following article to learn about capacitive touch screen technology.

Do you want to know what the capacitive touch screen means?

A capacitive touch panel is a control display that uses the conductive touch of a human finger or a specialized device for input.
Capacitive touchscreen devices are typically handheld and connect to networks or computers via an architecture that supports various components, including satellite navigation devices, personal digital assistants and mobile phones.
A capacitive touchscreen glass is activated by human touch, which serves as an electrical conductor used to stimulate the electrostatic field of the touch screen. However, special gloves that produce static electricity or specialized stylus pens may be used.

How Capacitive Touch Panels Work?

Capacitive sensors are used to detect the position of the touch. Capacitive touch screens are designed to sense the human touch.
In capacitive touchscreen display, glass panel of a particular device is covered with a capacitive layer with a static charge when we touch a finger on the screen some of the charge shifts from the device to the finger.
This decreased charge is noticed by the system. The system processed the information to the program which tells the exact location of a touch

View the video explanation of the capacitive touch panels:

Capacitive touch screen panel glass types are as follows:

• &#; Projected Capacitive Touch (PCT): Uses etched conductive layers with electrode grid patterns. It has robust architecture and is commonly used in point-of-sale transactions.
• &#; PCT Mutual Capacitance: A capacitor is at each grid intersection via applied voltage. It facilitates multitouch.
• &#; PCT Self Capacitance: Columns and rows operate individually via current meters. It has stronger signal than PCT mutual capacitance and functions optimally with one finger.
• &#; Surface Capacitive touchscreen: Coated on one side with small voltage conductive layers. It has limited resolution and is often used in kiosks.

The Capacitive Touchscreens Kit Uses:

• &#; Tablets
• &#; Smartphones
• &#; Android phones
• &#; Microsoft Surface
• &#; Advertising device
• &#; Subway ticketing equipment
• &#; Bank automatic withdrawal device
• &#; Apple&#;s iPhone, iPad and iPod Touch
• &#; So etc

Top 10 Advantages of Capacitive Touch Screens

Easy to learn and use

It turns out that the touch screen is very intuitive to use. This is why using a capacitive touch screen in an application helps eliminate errors.
Choosing the right button or menu item on the screen has never been easier. You just need to point it out. The on-screen buttons can be as big as necessary. Make sure that all users have a clear view of the button and know where to touch to select a feature or feature. capacitive touchscreen stylus requires little coordination by the user. The final benefit of the touch screen is to help users protect system content from unauthorized access. Always ensure that the right users can interact with the right content and information.

Incredible durability

Of course, the main advantages of capacitive touch screen technology are its strength and durability. Touch screen devices have seen many uses over the years, especially in commercial applications.
When your application or the environment of the application can be described as harsh a capacitive touch screen is the way to go. Capacitive touch screens are typically more robust than resistive touch screens.
They can better withstand demanding use in difficult environments. When the touch solution is frequently used resistive touch screens tend to show some wear. MMake them not respond in the heavy use area. Capacitive touch panel does not have this problem.

Easy to Clean

The tft lcd capacitive touch screens have a durable glass top layer. So, a Capacitive Touch Screen is not affected by dirt, rain, grease or dust.
Capacitive Touch screens are very well adapted for public use and applications that require heavy usage.

The most reliable in touch screen

Cracked touch screen glass continue to function. TFT capacitive touchscreen are more likely to continue to work when damaged. Cracked screens are among the most common type of damage sustained by touchscreen devices.
We almost hope that the HMI Operator Panel continue to work as usual, even when the screen is broken, shattered or pierced,
But the resistive touch screen will almost always stop working if any part of the screen is broken.
Anyway, minor cracks should not interfere with the function of the capacitive touch panel device. It will continue to measure the charge generated by the operator controller and use this information to determine the exact location where the touch occurred.

Support personalized customization

One of the biggest benefits of capacitive touch screens is the fact they are usually all-in-one solutions. The factory can customize different sizes of a capacitive touch screen according to customer needs.
Capacitive touch panel controller / touch monitors save space on desks as a mouse or keyboard is not needed. Integrating everything into the display helps save us valuable space. Integrating data entry with the display saves space in the final device

Sharper images with better contrast

The big difference between resistive and capacitive touch screens is the top layer. Capacitive touch screen devices have extraordinary picture quality thanks to their use of a glass layer.
Resistive touch screens have a flexible plastic layer. Glass is more clear than plastic, greatly improving the image quality of a capacitive touch screen compared to a resistive touch screen.
If you&#;re planning to use the touchscreen device to watch movies, TV shows or videos, you&#;ll probably want to choose a capacitive model for this reason.

More sensitive to light touch

Because capacitive touchscreens register touch via the human body&#;s electrical current, they require less operating pressure than resistive touch panel glass.
You can usually operate a capacitive touch screen simply by dragging your finger across the surface. This is in stark contrast to resistive touchscreens, which typically require a firm, medium-pressure press.

Provide multi-touch sensing

Projected capacitive touch screens are very similar to conventional capacitive touch screens. Projected capacitive touch screens make multi-touch possible, which is a big advantage for these types of touchscreen capacitive.
It allows gesture touches and functions such as pinch zoom. This is very beneficial for your application and allows you to do more as you want.

Efficient work and cost reduction

Use the touch screen interface to increase accuracy and reduce time spent on devices.
This will increase efficiency and ultimately reduce costs.
Users of touch screen devices can respond quickly without making errors. This will increase efficiency and ultimately reduce costs.

Better development prospect

One of the greatest benefits of touchscreens is the intuitive interaction between user and device. We uses a touchscreen interface in life that is usually capacitive&#;such as tablets, smartphones, Microsoft Surface, etc. Therefore manufacturers around the world are committing to touchscreen technology.
We believe capacitive touch screens will become the technology of choice for many different industries. This means advancements will most likely be designed to fit capacitive touch. They are making the technology future proof and compatible with developments.

Disadvantages of Capacitive Touch Screens

The glass is more susceptible to crack damage

The top glass layer makes the capacitive touch panel extremely durable and reliable. They are not susceptible to scratches and other damage as well as external influences.
But glass is easier to break than plastic and even though breakage doesn't affect the touch screens a lot. We can add a protective layer like thermally hardened glass in the future

Cannot be used with most gloves--Limited touch object

Where human touch makes work easy and quick on small and standard sized appliances there, it becomes problem on a wide screen or if it is placed at higher place.
Like it is not suitable for projectors because you cannot use hand everywhere and it becomes difficult to explain a higher point on the projector where your hand is not able to reach.
Here is another limited, the need for a conductive object eliminates many other touch objects, such as a gloved finger.

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