Invention Grant
US08872950B2 Image sensor and image-capturing apparatus with imaging pixel and focusing pixel having light shield layers including openings
有权
图像传感器和具有成像像素的图像捕获设备和具有包括开口的遮光层的聚焦像素
- Patent Title: Image sensor and image-capturing apparatus with imaging pixel and focusing pixel having light shield layers including openings
- Patent Title (中): 图像传感器和具有成像像素的图像捕获设备和具有包括开口的遮光层的聚焦像素
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Application No.: US13424865Application Date: 2012-03-20
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Publication No.: US08872950B2Publication Date: 2014-10-28
- Inventor: Koichi Fukuda
- Applicant: Koichi Fukuda
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Cowan, Liebowitz & Latman, P.C.
- Priority: JP2011-079799 20110331
- Main IPC: H04N3/14
- IPC: H04N3/14 ; H04N5/335 ; G03B13/00 ; H04N5/232 ; H04N5/369 ; H01L27/146 ; H04N9/04 ; H04N5/225
Abstract:
The capacitance of a charge-accumulating layer of an imaging pixel is made different from that of a charge-accumulating layer of a focusing pixel, thereby reducing the difference in saturation capacitance due to the difference between the light-reception efficiencies of the imaging pixel and the focusing pixel. The ratio between the capacitance of the charge-accumulating layer of the imaging pixel and that of the charge-accumulating layer of the focusing pixel is determined in consideration of a variation in ratio between the light-reception efficiencies of the imaging pixel and the focusing pixel with a change in at least one of the exit pupil distance and the aperture value.
Public/Granted literature
- US20120249852A1 IMAGE SENSOR AND IMAGE-CAPTURING APPARATUS Public/Granted day:2012-10-04
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