System and method for identifying LCD module

Abstract

The invention discloses an LCD module identifying system which comprises an LCD module and an ID reading module, wherein the LCD module further comprises an ID pin used for outputting certain electric characteristics when the LCD module is under working voltage; and the ID reading module is used for detecting the ID pin of the LCD module so as to identify the type of the LCD module according to the output electric characteristics of the ID pin. The invention also discloses an identifying method of the LCD module. Because the invention can identify the LCD module through detecting the ID pin of the LCD module and can definitely distinguish the LCD module without reading an ID register, the identifying mode is not limited by a display mode and not influenced by charge accumulation, thus the invention is beneficial to the compatibility of LCDs and can improve the identification accuracy of the LCDs.

Description

technical field [0001] The invention relates to LCD module identification technology, in particular to a liquid crystal display (Liquid Crystal Display, LCD) module identification method and system. Background technique [0002] When designing a product, portable device manufacturers usually have two or more solutions for LCD and other components, one as the main and the other as the backup, for issues such as supply or performance. Therefore, for the convenience of version management, product mass production and after-sales service, it is necessary to carry out a compatible design for the LCD module. [0003] At present, LCD software compatibility generally adopts the following method: sequentially use different LCD module ID recognition functions in several schemes to read the ID of the module until the read identity code (Identity, ID) matches a certain scheme in the scheme. A consistent, and then the corresponding initialization. However, this method has certain defect...

AI Technical Summary

Problems solved by technology

However, this method has certain defects: some LCD module integrated circuits (Integrated circuit, IC) can not read the ID in all display modes, for example, some ICs in the micro control unit (Micro Control Unit, MCU) The ID can be read in the mode, but cannot be read in the red-green-blue (RGB) mode, and some vice versa; in addition, due to its own defects, the IC may not be able to read in some extreme cases Get the correct ID. For example, some ICs may not be able to read the correct ID due to charge accumulation after fast sleep (sleep in) and wake-up (sleep out), and thus cannot be initialized correctly.

Therefore, the existing method of identifying the LCD module by relying on the ID register of the LCD module is not conducive to the compatibility of the LCD module, and the identification accuracy is not high

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