Signal self-adaption device and method for liquid crystal module testing
A technology for testing signals and liquid crystal modules, used in instruments, static indicators, etc., can solve the problems of slow switching speed, single function, complicated operation, etc., and achieve the effect of realizing production automation, improving production efficiency and high stability
Active Publication Date: 2012-12-19
WUHAN JINGCE ELECTRONICS GRP CO LTD +1
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Problems solved by technology
Traditional liquid crystal module test equipment generally has a single function, either does not support video signal input, or only supports video signal and picture signal input from the same signal source, but this kind of test device is complicated to operate, which leads to slow switching speed and greatly reduces Improve the production efficiency of LCD modules
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Embodiment Construction
[0028] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0029] Such as figure 1 As shown, a kind of liquid crystal module test signal self-adaptive device of the present invention comprises the FPGA (Field Programmable Gate Array) module and CPU module of electrical connection, and described FPGA module comprises electronic switch I, electronic switch II, electronic switch I has video signal or picture signal clock input, and electronic switch II has video signal or picture signal input; A matching module, a state machine module respectively connected to the electronic switch I and the electronic switch II, a codec module connected to the electronic switch II, and a module adaptation module connected to the codec module, the module adaptation module is used to connect LCD module to be tested.
[0030] In the above device, the CPU module needs to initialize the system when it is powered on, specifi...
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The invention discloses a signal self-adaption device and method for liquid crystal module testing, relating to the field of liquid crystal module testing. Centering on digital signal processing and locked phase loop technology, the digital signal processing and locked phase loop function is realized by using a FPGA (Field Programmable Gate Array) module; the locked phase loop module is dynamically configured by using parameter control state machines through monitoring input video signals, clock of picture signals, effective signals, and the current liquid crystal modulus parameters in real time to ensure that the locked phase loop always outputs the correct clock, so that the corresponding signal is output by a subsequent circuit according to the clock, the video signal for the liquid crystal modulus testing and the picture signal are automatically switched and adapted, and the production efficiency of the liquid crystal modulus is improved, thereby the invention has the advantages of low cost and high stability and can realize production automation.
Description
technical field [0001] The invention relates to the field of liquid crystal module testing, in particular to a device and method for self-adapting test signals of a liquid crystal module. Background technique [0002] As the technology of PFD (Flat Panel Display, flat panel display) becomes more and more mature, the mainstream products have excellent performance and have been applied more and more in many fields such as mobile phones, computers, and home appliances. [0003] The main component of PFD is the liquid crystal module, which is generally produced in batches through automatic production lines or semi-automatic production lines. In order to ensure the quality of the products, each liquid crystal module on the production line must be strictly tested with special equipment. The testing equipment is called LCD module testing device. The detection of the liquid crystal module mainly includes: whether it can display normally, whether there are dead pixels on the liquid ...
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IPC IPC(8): G09G3/00
Inventor 彭骞陈凯周凯
Owner WUHAN JINGCE ELECTRONICS GRP CO LTD