LIGHT SENSOR TEST UNIT, METHOD OF TESTING LIGHT SENSOR USING THE SAME AND DISPLAY APPARATUS
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    发明申请
    LIGHT SENSOR TEST UNIT, METHOD OF TESTING LIGHT SENSOR USING THE SAME AND DISPLAY APPARATUS 有权
    光传感器测试单元,使用其的光传感器的测试方法和显示设备

    公开(公告)号:US20110012878A1

    公开(公告)日:2011-01-20

    申请号:US12892157

    申请日:2010-09-28

    IPC分类号: G09G3/36 G01J1/42 G09G5/10

    CPC分类号: G01J1/08 G01J1/18 G01J1/46

    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.

    摘要翻译: 在光传感器测试单元中,测试电路内置在显示面板中,并连接到感测外部光强度的光传感器的输出节点。 当向光传感器提供具有预定强度的外部光时,测试电路响应于从输出节点输出的感测信号输出驱动信号。 测试像素部分包括从布置在显示面板中的多个像素中选择的像素,并且从测试电路接收驱动信号以显示对应于驱动信号的灰度级。 亮度测量器测量与测试像素部分中显示的灰度相对应的亮度,以将测量的亮度与预定亮度进行比较,从而测试内置在显示面板中的光传感器是否正常工作。