Invention Grant
- Patent Title: Photo sensing device, photo sensing circuit, touch panel, and method of sensing output value of photo sensing element
- Patent Title (中): 感光元件，感光电路，触控面板，感光元件输出值检测方法
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Application No.: US12568055Application Date: 2009-09-28
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Publication No.: US08624874B2Publication Date: 2014-01-07
- Inventor: Deok-Young Choi , Yong-Sung Park , Do-Youb Kim , Soon-Sung Ahn , In-Ho Choi
- Applicant: Deok-Young Choi , Yong-Sung Park , Do-Youb Kim , Soon-Sung Ahn , In-Ho Choi
- Applicant Address: KR Yongin-si
- Assignee: Samsung Display Co., Ltd.
- Current Assignee: Samsung Display Co., Ltd.
- Current Assignee Address: KR Yongin-si
- Agency: Christie, Parker & Hale, LLP
- Priority: KR10-2008-0102557 20081020
- Main IPC: G06F3/042
- IPC: G06F3/042
Abstract:
A photo sensing device, a photo sensing circuit, a touch panel, and a method of sensing an output value of a photo sensing element, in order to remove the influence of a threshold voltage. The device includes a photo sensing unit generating a sensing current according to an intensity of incident light, a driving unit outputting a driving current according to the sensing current generated by the photo sensing unit, and a scanning unit outputting on a data line the driving current of the driving unit in a first mode corresponding to the photo sensing unit gathering light for a predetermined period of time and outputting the driving current in a second mode corresponding to the photo sensing unit initializing.
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