Touch panel collecting

1, the front panel or frame
The outermost layer of the front panel or the frame is the end product. In some products, the frame around the transparent cover up against the harsh climate of the external or the effects of humidity, but also to prevent the following sensing products subject to scratching and damage (see # 3). Some time, the outermost frame simply covering the top of the touch sensor, this case is merely a decoration.Character LCD Module
2, touch controller
Typically, the touch controller is a small micro-controller chip, which is located between the touch sensor and PC / or embedded system controller. The chip can be fitted into the internal system of the controller board can be put to this paste to a glass touch sensor on the flexible printed circuit (FPC). The touch controller will extract the information from the touch sensor, and converts it into a PC or embedded system controller is able to understand the information.
3, the touch sensing
Touch screen sensor with a touch response surface of the transparent glass. The sensor is placed above the LCD, the touch area of ​​the panel to cover the viewable area of ​​the display. There are many different kinds of touch sensing technology on the market today, each using different methods from each other to detect a touch input. Basically, these techniques are in touch, so that the current flowing through the panel, resulting in the change of a voltage or signal. This voltage change will touch the controller sensing, in order to determine the position of the touch screen.
4, the liquid crystal display (LCD)
The vast majority of touch screen system is used in traditional LCD. LCD touch product selection method with the traditional system is basically the same, including the resolution, resolution, refresh rate, and cost. But the touch screen Another major consideration is the radiation level. The touch sensor technology is based on the touch panel, yielding a tiny electrical changes, and can radiate electrical noise LCD is the difficulty in the design. Before selected for the LCD touch system, with the touch sensor provider should be consulted.
5, the system software
The touch screen driver software from the original manufacturers (such as mobile phones, embedded OS) can also be a later installation of software (like a traditional PC on a touch screen). The software should enable the touch screen and the system controller to work together. It will tell the operating system how to parse the touch event information from the touch controller. PC-based applications, the vast majority of touch screen drive like a mouse. This makes the touch screen and continuously in the same location on the screen by the mouse is very similar. In embedded systems, embedded control drive will appear on the screen with the received position of touch than.lcd graphic display