Invention Grant
US08772701B2 Photodetector and display device with light guide configured to face photodetector circuit and reflect light from a source
有权
具有导光器的光电检测器和显示装置，配置为面对光电检测器电路并反射来自源的光
- Patent Title: Photodetector and display device with light guide configured to face photodetector circuit and reflect light from a source
- Patent Title (中): 具有导光器的光电检测器和显示装置，配置为面对光电检测器电路并反射来自源的光
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Application No.: US13113470Application Date: 2011-05-23
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Publication No.: US08772701B2Publication Date: 2014-07-08
- Inventor: Yoshiyuki Kurokawa , Takayuki Ikeda , Hikaru Tamura , Munehiro Kozuma , Masataka Ikeda
- Applicant: Yoshiyuki Kurokawa , Takayuki Ikeda , Hikaru Tamura , Munehiro Kozuma , Masataka Ikeda
- Applicant Address: JP Atsugi-shi, Kanagawa-ken
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Atsugi-shi, Kanagawa-ken
- Agency: Robinson Intellectual Property Law Office, P.C.
- Agent Eric J. Robinson
- Priority: JP2010-122208 20100528
- Main IPC: G01J1/04
- IPC: G01J1/04 ; G01J1/44
Abstract:
Influence of external light is suppressed. With a photodetector including a photodetector circuit which generates a data signal in accordance with illuminance of incident light and a light unit which overlaps with the photodetector circuit, a first data signal is generated by the photodetector circuit when the light unit is in an ON state, a second data signal is formed by the photodetector circuit when the light unit is in an OFF state, and the first data signal and the second data signal are compared, so that a difference data signal that is data of a difference between the two compared data signals is generated.
Public/Granted literature
- US20110291013A1 PHOTODETECTOR Public/Granted day:2011-12-01
Information query
