发明名称 |
LIGHT SENSOR TEST UNIT, METHOD OF TESTING LIGHT SENSOR USING THE SAME AND DISPLAY APPARATUS |
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.
|
申请公布号 |
US2009152441(A1) |
申请公布日期 |
2009.06.18 |
申请号 |
US20080260420 |
申请日期 |
2008.10.29 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
PAK SANG-JIN;UH KEE-HAN;MAENG HO-SUK;CHO MAN-SEUNG;CHA YOUNG-OK |
分类号 |
G01J1/32 |
主分类号 |
G01J1/32 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|