发明名称 |
Photo sensing device, photo sensing circuit, touch panel, and method of sensing output value of photo sensing element |
摘要 |
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. |
申请公布号 |
US8624874(B2) |
申请公布日期 |
2014.01.07 |
申请号 |
US20090568055 |
申请日期 |
2009.09.28 |
申请人 |
CHOI DEOK-YOUNG;PARK YONG-SUNG;KIM DO-YOUB;AHN SOON-SUNG;CHOI IN-HO;SAMSUNG DISPLAY CO., LTD. |
发明人 |
CHOI DEOK-YOUNG;PARK YONG-SUNG;KIM DO-YOUB;AHN SOON-SUNG;CHOI IN-HO |
分类号 |
G06F3/042 |
主分类号 |
G06F3/042 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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