lcd panel supplier.Research on the control of LCD module. Liquid crystal display module is a kind of assembly which assembles liquid crystal display device, connector, integrated circuit, PCB circuit board, backlight and structure parts together. The English name is “LCD Module”, abbreviated as “LCM”, and it is generally called “liquid crystal display module” in Chinese.

In fact, it is a commercial component. According to the relevant national standards of our country, only the inseparable integrated parts are called “modules”, and the detachable ones are called “components”. Therefore, the specification should be called “liquid crystal display module”. However, people have been accustomed to calling it “module” for a long time.

LCD has its own particularity, and special tools are needed for connection and assembly, and the operation technology is very difficult, so the manufacturer closes the LCD display, connector (interface), drive circuit PCB, backlight and other components with steel plate, leaving only backlight, plug and drive circuit input socket. This kind of module is called LCDMODULE (LCM), also known as liquid crystal display module, liquid crystal panel, liquid crystal panel and so on. In this textbook, the term “liquid crystal panel metallurgy” is generally used. It can be seen that the way of this component not only increases the reliability of work, but also prevents users from causing unnecessary accidental losses due to random disassembly. Manufacturers of LCD color TV only need to connect the plug and drive circuit of the backlight with the external circuit board, and the production process of the whole machine becomes much simpler.

The backlight in the LCD panel generally needs high voltage, which is generated by the high voltage board circuit outside the module (also known as inverter) and sent to the backlight through the high voltage plug. According to the size of LCD panel and display requirements, the number of backlights is different, generally small screen LCD color TV tube less than 10, large screen LCD color TV more than 10.

The motherboard circuit outside the LCD panel is connected with the screen control board inside the panel through the plug-in input interface. For these plug-in input interfaces, different LCD panels use different interface forms, some use TTL interface, some use LVDS interface.

The LCD panel is also provided with a gate, a source and a timing controller PCB, on which a timing controller (TCON), a row driver, a column driver and other components are distributed. After the data and clock signal of the LCD panel are processed by TCON, the travel driving signal and the column driving signal are separated and sent to the row and column electrodes of the LCD panel respectively (i.e. row and column driving signal input).