Vehicle touch display device solution

With the rapid development of information and electronics, the application of touch display panel is becoming more and more common. At present, touch panel has begun to become an industry in the world. As an advanced computer input device, it is the simplest, convenient and natural at present, and is also suitable for multimedia information query equipment. Touch panel has the advantages of ruggedness, fast response speed, space saving Easy communication and many other advantages.
However, in response to the popularization of VCD / DVD multimedia and satellite navigation GPS in cars, the application of touch display panel in cars is becoming more and more common, which can enable drivers or passengers to use this technology. As long as they gently touch the symbols or words on the display panel with their fingers, they can operate the host computer, so that people, cars and machines can be output into the system interactively, This technology not only greatly facilitates those users who do not understand computer operation, but also gives a new look to vehicle multimedia equipment. It is also an attractive new multimedia interactive product. This paper introduces the related technologies and application solutions of small-size touch display panel for reference.
For the convenience of operation, people use touch panel to replace mouse or keyboard. When working, we must first touch the touch panel installed at the front end of the display with our fingers or other objects, and then locate and select the information input according to the icon or menu position touched by our fingers. Its main architecture is composed of touch detection component and touch panel controller.
The touch detection part is installed in front of the display panel to detect the user's touch position and accept the evacuation touch screen controller; The main function of the touch screen controller is to receive the touch information from the touch point detection device, convert it into contact coordinates, and then send it to the CPU. At the same time, it can receive and execute the commands sent by the CPU.
For the touch panel in the current market, it can be divided into five basic types; From the technical principle to distinguish the touch panel, it can be divided into: pressure sensing technology touch panel, resistance technology touch panel, capacitance technology touch panel, infrared technology touch panel and surface acoustic wave technology touch panel.
Pressure sensing technology has withdrawn from the market; Although the price of infrared technology is low, the outer frame is easy to be damaged and produce light interference, which is easy to be distorted in curved surface; The capacitive design theory is good, but the image distortion is difficult to be fundamentally solved; The positioning of resistance type is accurate, but the price is high and the panel is easy to be damaged; The surface acoustic wave touch screen solves various defects of the previous touch screen. The picture is clear and has anti riot effect. It is suitable for various occasions. However, the main disadvantage is that once there are water droplets or dust on the panel, the response of the panel will become slow or even do not work.