Invention Grant
- Patent Title: Light sensing system and light sensor with polarizer
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Application No.: US16703542Application Date: 2019-12-04
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Publication No.: US11515437B2Publication Date: 2022-11-29
- Inventor: Alireza Bonakdar , Shinn-Jhy Lian
- 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: Perkins Coie LLP
- Main IPC: H01L31/0232
- IPC: H01L31/0232 ; H01L31/0216 ; H01L31/02 ; G02B5/30 ; H01L27/146

Abstract:
A light sensor includes a photodiode, interlayer dielectric layer and plurality of metal layers. A polarizer is disposed in the plurality of metal layers. The photodiode is coupled to generate charge in response to incident light directed through a first side of the semiconductor layer. The polarizer includes a first metal grid formed with a first metal layer and a second metal grid formed with a third metal layer. The second metal grid is stacked with the first metal grid such that the first and second metal grids are disposed above and aligned with the photodiode. The photodiode is optically coupled to receive incident light through the first and second metal grids of the polarizer and through the first side of the semiconductor layer.
Public/Granted literature
- US20210175378A1 LIGHT SENSING SYSTEM AND LIGHT SENSOR WITH POLARIZER Public/Granted day:2021-06-10
Information query
IPC分类: