Invention Grant
- Patent Title: Image sensor with electronic global shutter and differential sensing using reset-sampling capacitor shared among multiple image storage capacitors
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Application No.: US16523850Application Date: 2019-07-26
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Publication No.: US11095842B2Publication Date: 2021-08-17
- Inventor: Keiji Mabuchi , Sohei Manabe , Lindsay Grant
- Applicant: OmniVision Technologies, Inc.
- Applicant Address: US CA Santa Clara
- Assignee: OmniVision Technologies, Inc.
- Current Assignee: OmniVision Technologies, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Lathrop GPM LLP
- Main IPC: H04N5/3745
- IPC: H04N5/3745 ; H01L27/146 ; H04N5/378 ; H04N5/357

Abstract:
An image sensor has an array of pixel blocks, and each pixel block having associated shutter transistors with each coupled to transfer an image signal comprising a charge dependent on light exposure of a selected pixel onto an image storage capacitor of a plurality of image storage capacitors associated with the pixel block, the image storage capacitors of the pixel block configured to be read through a differential amplifier into an analog to digital converter. The differential amplifier of each pixel block receives a second input from a single reset-sampling capacitor associated with the pixel block. The single reset-sampling capacitor is loaded when the pixels of the pixel block are reset.
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Information query
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