Liquid crystal module testing method and device for dp decoding and resolution automatic adjustment

Abstract

The invention discloses a DP (Digital Processing) decoding and automatic resolution adjusting liquid crystal display module testing method and a device, and relates to the field of liquid crystal display module testing. The testing method comprises the following steps of: decoding DP video signals to obtain video data and video parameter information thereof, wherein the video parameter information comprises resolution parameters; matching the video data with video data required by a liquid crystal display module to be tested according to the video parameter information and the video parameter information of the liquid crystal display module to the tested; conducting video encoding processing to the matched video data according to the communication interface and the video time sequence parameter of the liquid crystal display module to be tested to obtain video testing signals which are matched with the communication interface of the liquid crystal display module to be tested, and the video testing signals test the liquid crystal display module to be tested. The DP decoding and automatic resolution adjusting liquid crystal display module testing method and the device have the advantages that the energy consumption is lower during liquid crystal display module testing, the resolution can be automatically adjusted according to the liquid crystal display module, the liquid crystal display modules of different types can be automatically adapted, and not only is the testing cost lower and the testing efficiency higher, but also the energy consumption is lower and the stability and the reliability are higher.

Description

Technical field [0001] The invention relates to the testing field of liquid crystal modules, in particular to a liquid crystal module testing method and device with DP decoding and automatic resolution adjustment. Background technique [0002] LCD (Liquid Crystal Display) has the advantages of thinness, low power consumption, low radiation, no flicker on the screen, and rich colors. With the progress of the times, LCD has become the mainstream display device in the electronic market. The liquid crystal module is a key component of the LCD, and the liquid crystal module needs to be rigorously tested and inspected by a testing device during production. [0003] The interconnection signal inside the traditional liquid crystal module usually uses LVDS (Low-Voltage Differential Signaling, low-voltage differential signal transmission) interface. In order to meet the pursuit of high resolution and high refresh rate of display devices, liquid crystal modules with ultra-high resolution and...

AI Technical Summary

Problems solved by technology

The process of equipping the test device with an output interface and a chip is not only complicated, but also increases the test cost, wastes resources, and the test efficiency is low, which in turn reduces the production efficiency of the LCD module and prolongs the production change time of the LCD module

[0006] (2) The test device adopts the fixed single-link mode when working; for ultra-high-resolution liquid crystal modules, since the signal bandwidth of ultra-high-resolution liquid crystal modules increases sharply, the fixed single-link mode is used for testing When testing ultra-high-resolution liquid crystal modules, the processing speed and frequency of the test device will increase significantly. The test device not only consumes high energy consumption, but also has large interference, and the stability of the test device is poor. The liquid crystal tested by the test device Modules are less reliable

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