Views: 201 Author: Reshine Display Publish Time: 2023-07-28 Origin: Site
An insulation layer sits in between the X and Y electrodes on the projected capacitive touchscreen. ITO and a metal bridge are typically used to create a diamond pattern on the transparent electrodes.
The water in the human body makes it conductive. The conductivity of the human body is used by projected capacitive technology. A capacitance coupling occurs between a human finger and the electrodes when it touches a sensor with an X and Y electrode pattern, changing the electrostatic capacitance between the X and Y electrodes. The position and change in the electrostatic field are detected by the touchscreen controller.
When compared to resistive touch panels, capacitive touch screens use a glass substrate with higher transparency. CTP also has good picture quality and contrast due to optical bonding and glass surface treatment.
Capacitive touchscreens require less operating pressure than resistive touch panel glass because they register touch via the electrical current of the human body. It supports touch gestures and multi-touch, providing a much better touch user experience.
Because the cover glass is used in front, which can be extremely hard (>9H), it is extremely durable for touch and can withstand over 10 million touches. It also prevents scratches and is simple to clean, making it the most popular resistive touch panel.
To give users flexible designs, the capacitive touchscreen can be made in very large sizes (100 inches), and the cover lens can be decorated with various colors, shapes, and holes.
The manufacturing process for capacitive touchscreens is comparatively more expensive, and the cost can be high.
Immunity to Contaminants/Objects on Capacitive Screen To be used in unique applications, such as with gloves on or in a saltwater environment, a touchscreen requires a special design and special controllers. Even more, money may be needed.
The protective lens may break. A film or optical bonding is required during the manufacturing process to stop glass fragments from flying, raising the cost even further.
Because capacitive touchscreens are easily damaged by ESD or EMI, special designs must be taken into account, which can increase the cost. Special calibration needs to be done with the controller manufacturer's assistance.
A capacitive touch screen may use more power than a resistive touch panel. In some cases, a hot button must be created to activate the touch feature.