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Touch screen type

Touch screen type

With the continuous advancement of technology and the growth of market demand, touch screen technology will continue to be optimized, bringing more convenience to people's daily life and work. At the same time, different touch screen type and structures will also exert their unique advantages according to the different needs of the application fields.

Touch screens (TP), also known as "touch screens" or "touch panels," rely on touch sensor technology to input information. According to the working principle, there are many types of touch screen technology, each type has its own characteristics and applicable scenarios. Here are some common touch screen type:

1. Capacitive touch screen: capacitive touch screen uses materials with good conductivity to form sensing electrodes. When the user touches the screen with his fingers, the electric field distribution between the sensing electrodes will be changed due to the electrification of the human body, thereby detecting the touch position. capacitive touch screen It has good support for multi-touch and is relatively sensitive in operation.
Capacitive touch screens have become the current mainstream technology products due to their high sensitivity, good light transmittance, strong stability, and long service life. It supports multi-touch and is widely used in fields such as smart consumer electronics, industrial medical equipment, smart homes, office equipment, and automotive electronics.
2. Resistive touch screen: Resistive touch screen is a structure consisting of a thin layer of air sandwiched between two layers of conductive films. When a user presses a finger or stylus on the screen, the two conductive films come into contact, thereby changing the current. By measuring this change, the touch position can be determined. The advantage of resistive touch screens is that they are relatively low-priced and support multiple input methods such as fingers and stylus pens.
3. Surface acoustic wave touch screen: Surface acoustic wave touch screen uses ultrasonic sensors to generate a series of sound waves along the screen surface. When a touch occurs, the touched position will hinder the propagation of sound waves. By detecting this obstruction, the touch position can be determined. Surface acoustic wave touch screens are more suitable for large-size screens and high transparency requirements, and are often used in information kiosks and interactive displays.
4. Infrared touch screen: Infrared touch screen places infrared transmitters and receivers on the frame of the screen to form a grid. When an object enters the grid, it blocks infrared light, allowing the touch location to be detected. This touch screen is not limited by materials and supports touching using various objects. Infrared touch screens are commonly used in large displays, commercial displays and outdoor applications.
5. Electromagnetic induction touch screen: The electromagnetic induction touch screen uses an induction pen, and an electromagnetic induction plate is embedded on the screen. When the induction pen approaches the screen, the electromagnetic signal generated is detected, thereby determining the touch position. This kind of touch screen is more suitable for drawing and writing applications that require high precision, and is commonly found in drawing tablets and professional drawing equipment.
6. Optical projection touch screen: Optical projection touch screen uses a projector to project images onto the screen. When the user touches the screen, the optical sensor detects the touch location. This kind of touch screen usually does not require coating and has certain advantages in terms of wear resistance and transparency, but it has certain requirements for light conditions.

Each type of touch screen has its own unique advantages and applicable scenarios, and choosing the right touch screen type often depends on the specific needs of the application and the expected user experience. A touch screen is a device that allows input of commands by touching the screen. According to different technical principles and implementation methods, touch screens can be divided into various types:

1. Capacitive touch screen: This is one of the most widely used types of touch screens. Capacitive touch screens realize touch operations by sensing human body charges. They have the advantages of high sensitivity, support for multi-touch and continuous touch. Commonly found on smartphones, tablets, and many other electronic devices.
2. Resistive touch screen: Resistive touch screen is a structure with a small gap sandwiched between two layers of conductive film. When the user applies pressure on the screen with a finger or a special pen, the conductive films come into contact, forming a circuit. Resistive touch screens are relatively cheap, but generally don't support multi-touch.
3. Infrared touch screen: Infrared touch screen places infrared transmitters and receivers around the screen. When an object (such as a finger) enters the path of the infrared ray, the touch point is detected. This type of touch screen is not affected by the material of the object and is suitable for outdoor and harsh environments.
4. Electromagnetic induction touch screen: Electromagnetic induction touch screen uses the principle of electromagnetic induction to detect the touch position. It usually contains a transmitting coil and a receiving coil. When a conductive object comes into contact, the electromagnetic field is changed to determine the touch location. This type of touch screen has certain requirements for touching objects.
5. Surface acoustic wave touch screen: Surface acoustic wave touch screen spreads ultrasonic beams on the glass surface. When an object touches the screen surface, the ultrasonic waves are absorbed, thereby determining the touch location. It has high transparency and is suitable for large display screens.
6. Optical projection touch screen: Optical projection touch screen uses infrared light or laser to create an invisible grid on the screen surface. When an object touches the screen surface, the blocked light point determines the touch location. This type of touch screen has no special requirements for the screen surface.

Each type of touch screen has its applicable scenarios and characteristics. Choosing the appropriate touch screen type depends on specific application requirements and environmental conditions.

DINGTOUCH is a company specializing in the R&D and production of touch screen technology, headquartered in Shenzhen, China. As a professional touch screen supplier, DINGTOUCH is committed to providing high-quality, stable and reliable touch screen products to meet the diverse needs of customers. We continue to carry out technological innovation and product optimization to ensure that its touch screen products have good sensitivity, accuracy and durability.
In addition to the products themselves, we also focus on cooperation and communication with customers, and are committed to providing customized solutions and excellent after-sales services. Through continuous efforts to improve product quality and customer satisfaction, we have established a good reputation in the touch screen industry and won widespread market recognition.

What DINGTOUCH can do:

• PCAP can be made up to 65”

• Multi-touch (Touch screen can be customized to your needs.)

• Optical bonding service/air bonding

• LCD interface: HDMI/RGB/MIPI/LVDS/EDP, etc.

• PCAP interface: IIC/USB interface

• CTP can customize the cover glass surface treatment process AG (anti-glare), AR (anti-reflection), AF (anti-fingerprint), waterproof, and glove touch

• Supports 0.55 mm-12 mm coverslip touch.

• Support operating temperature: -40℃-90℃.