EDP BOARD
What is EDP LCD module
Unlike the different types of LCD modules used by TV sets, notebooks use LVDS and EDP LCD modules.
With the popularization of 2K LCD module in notebook computer, the bandwidth limitation of LVDS makes the LVDS LCD module for notebook computer less and less, and EDP LCD module has become the mainstream.
EDP Embedded Display Port. the standard of EDP comes from Display Port (DP), but it is Different From Display Port. In short,
1. DP interface: DP interface belongs to external interface, which can only be used for transmission between display and driver board, not for transmission between chips.
2. EDP interface: EDP interface is an internal interface, which can be used for the transmission between chips, or between display and driver board.
EXV2080 supports edp1.1 standard, and EDP version is downward compatible. Here we only discuss how to test EDP LCD module with EXV2080.
EXV2080 can be used with EDP convert-board E1 (to be purchased separately) to realize the test of notebook EDP LCD module.
Note: DP interface looks very similar to EDP interface in appearance, but DP is only used for large display LCD module, DP LCD module is not used for notebook. When you encounter a large
LCD module, that is, a LCD module of more than 16 inches, do not use the EDP of EXV2080 to test.
Note: Due to the fact that EDP LCD module is mostly used in notebook computers, it is suggested to use EXV2080 for EDP LCD module test on the premise that users should be familiar with the maintenance of notebook computers and have a deeper understanding of notebook LCD module.
Features of test EDP LCD module with exv2080
Compared with similar products on the market, EXV2080 test notebook EDP LCD module has the following characteristics:
1. Built in 12V power supply and backlight control circuit, for the mainstream LED backlight EDP LCD module, there is no need to add additional backlight power supply;
2. The built-in SMBUS control circuit can directly light up the EDP LCD module with SMBUS control backlight;
3. The LCD module parameter setting of EDP is intuitive and visual, and the LCD module parameter covers the current mainstream 8 resolutions. The LCD module parameters are directly set in the user interface of the instrument without additional resistance and jumper;
4. It can directly test the mainstream 30 pin and 40 pin general EDP cable sequence LCD module, without the need to change the cable through the convert-board or twisted cable;