Virtual load board and testing system and testing method for liquid crystal display control panel
A dummy load and liquid crystal display technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of untimely detection of reliability, high manufacturing cost, and unsuitability
Active Publication Date: 2012-02-01
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology
In the reliability test process of the liquid crystal display control panel in the prior art, the liquid crystal display control panel needs to be connected with the liquid crystal display panel, so the test equipment is bulky and the manufacturing cost is high, and it is not suitable to be placed in the reliability test equipment , so the reliability test of the liquid crystal display control panel in the prior art is tested in a general environment, and it is impossible to perform a specific function test in a specific environment, and it is impossible to detect in time the possible defects that may be found when performing a specific function test in a specific environment. Reliability issues
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[0019] See figure 1 , figure 1 is a schematic block diagram of the first embodiment of the virtual load board of the present invention. Such as figure 1 As shown, the virtual load board 10 of this embodiment includes an interface 11 , a conversion circuit 12 and an indication unit 13 . Wherein, the interface 11 includes at least one pin 14 .
[0020] In this embodiment, the pin 14 is used to receive an output voltage output from a liquid crystal display control board (not shown). The conversion circuit 12 is connected to the pin 14 to obtain the output voltage. The conversion circuit 12 is used to convert the output voltage into the working voltage of the indicating unit 13 and provide the working voltage to the indicating unit 13 . The indication unit 13 generates an indication signal under the action of the working voltage, and then indicates the working state of the liquid crystal display control panel. In this embodiment, the conversion circuit 12 may be various volt...
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The invention provides a virtual load board. The virtual load board comprises an interface, a conversion circuit and an indicating unit, wherein the interface comprises at least one pin, and the pin is used for receiving an output voltage output from a liquid crystal display control panel; and the conversion circuit is used for converting the output voltage into a working voltage of the indicating unit and supplying the working voltage to the indicating unit. The invention further provides a testing system and a testing method for the liquid crystal display control panel. Therefore, the reliability of the liquid crystal display control panel can be tested by substituting the liquid crystal display control panel for the virtual load board; the virtual load board has the advantages of small volume and low manufacturing cost, can be put into the reliability testing equipment together with the liquid crystal display control panel, and can further be used for testing the reliability of the liquid crystal display control panel in a specific environment.
Description
technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a test system and a test method of a virtual load board and a liquid crystal display control board. Background technique [0002] The reliability of a product is defined as the probability that the product will satisfactorily complete the task when it performs a specific performance or function within a specified time and under specified conditions. In the reliability test process of the liquid crystal display control panel in the prior art, the liquid crystal display control panel needs to be connected with the liquid crystal display panel, so the test equipment is bulky and its manufacturing cost is high, and it is not suitable to be placed in the reliability test equipment , so the reliability test of the liquid crystal display control panel in the prior art is tested in a general environment, and it is impossible to perform a specific function test in a specifi...
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IPC IPC(8): G09G3/00
CPCG09G3/006G01R31/2849
Inventor 廖学士李春江张小新蔡荣茂
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD