Invention Grant
- Patent Title: Light-sensing apparatus, method of driving the light-sensing apparatus, and optical touch screen apparatus including the light-sensing apparatus
- Patent Title (中): 感光装置,驱动光感测装置的方法,以及包括光感测装置的光学触摸屏装置
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Application No.: US13553245Application Date: 2012-07-19
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Publication No.: US09362322B2Publication Date: 2016-06-07
- Inventor: Seung-eon Ahn , I-hun Song , Sang-hun Jeon , Young Kim , Yong-woo Jeon , Chang-jung Kim
- Applicant: Seung-eon Ahn , I-hun Song , Sang-hun Jeon , Young Kim , Yong-woo Jeon , Chang-jung Kim
- Applicant Address: KR Gyeonggi-do
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR Gyeonggi-do
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: KR10-2011-0092231 20110909
- Main IPC: H01L27/146
- IPC: H01L27/146 ; G06F3/041 ; G06F3/042

Abstract:
In one embodiment, a light-sensing apparatus includes a light-sensing pixel array that has a plurality of light-sensing pixels arranged in rows and columns; and a gate driver configured to provide the light-sensing pixels with a gate voltage and a reset signal that have inverted phases. Each of the light-sensing pixels includes a light sensor transistor configured to sense light and a switch transistor configured to output a light-sensing signal from the light-sensor transistor. The gate driver includes a plurality of gate lines connected to gates of the switch transistors, a plurality of reset lines connected to gates of the light sensor transistors, and a plurality of phase inverters each connected between a corresponding reset line and a gate line. Thus, when a gate voltage is applied to one of the plurality of gate lines, a reset signal with an inversed phase to the gate voltage may be applied to a corresponding reset line.
Public/Granted literature
Information query
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