Invention Grant
- Patent Title: Photoelectric conversion device and electronic device including the same
- Patent Title (中): 光电转换装置及其电子装置
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Application No.: US12614537Application Date: 2009-11-09
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Publication No.: US08227741B2Publication Date: 2012-07-24
- Inventor: Jun Koyama , Hideaki Shishido
- Applicant: Jun Koyama , Hideaki Shishido
- Applicant Address: JP Kanagawa-Ken
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Kanagawa-Ken
- Agency: Nixon Peabody, LLP
- Agent Jeffrey L. Costellia
- Priority: JP2008-289408 20081112
- Main IPC: H01L31/00
- IPC: H01L31/00

Abstract:
An object is to provide a photoelectric conversion device which can correct a difference between a measured light intensity and an actual light intensity, which occurs when output current decreases due to the fact that a strong light is received, and outputs the corrected current. The photoelectric conversion device includes a photoelectric conversion element; a photocurrent output circuit for providing a first current corresponding to the amount of incident light on the photoelectric conversion element; a photocurrent correcting circuit which includes a corrective photoelectric conversion element for providing a second current, the corrective photoelectric conversion element including a light shield film for blocking part of light; a photocurrent adder circuit which includes a circuit for providing a fourth current; and an amplifier circuit including a circuit which amplifies a current corresponding to the sum of the first current and the fourth current and outputs the amplified current.
Public/Granted literature
- US20100116972A1 PHOTOELECTRIC CONVERSION DEVICE AND ELECTRONIC DEVICE INCLUDING THE SAME Public/Granted day:2010-05-13
Information query
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