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Light sensor test unit of testing a light sensor that senses an external light, method of testing light sensor using the same and display apparatus
Light sensor test unit of testing a light sensor that senses an external light, method of testing light sensor using the same and display apparatus
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机译:测试感测外部光的光传感器的光传感器测试单元,使用该光传感器测试光传感器的方法以及显示装置
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摘要
In a light sensor test unit, a test circuit is built in a display panel and connected to an output node of a light sensor which senses an intensity of an external light. When external light having a predetermined intensity is provided to the light sensor, the test circuit outputs a driving signal in response to a sensing signal output from the output node. A test pixel part includes pixels selected from a plurality of pixels arranged in the display panel and receives the driving signal from the test circuit to display a gray-scale corresponding to the driving signal. A brightness measurer measures a brightness corresponding to the gray-scale displayed in the test pixel part to compare the measured brightness with a predetermined brightness, thereby testing whether the light sensor built in the display panel is normally operated.
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