Invention Application
- Patent Title: METHOD FOR MANUFACTURING BACK-THINNED SOLID-STATE IMAGING DEVICE
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Application No.: US17792799Application Date: 2021-01-19
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Publication No.: US20230045038A1Publication Date: 2023-02-09
- Inventor: Koei YAMAMOTO , Tatsuki KASUYA , Kazuhiro TANIZAKI , Yoshiyuki SUZUKI
- Applicant: HAMAMATSU PHOTONICS K.K.
- Applicant Address: JP Hamamatsu-shi, Shizuoka
- Assignee: HAMAMATSU PHOTONICS K.K.
- Current Assignee: HAMAMATSU PHOTONICS K.K.
- Current Assignee Address: JP Hamamatsu-shi, Shizuoka
- Priority: JP2020-007338 20200121
- International Application: PCT/JP2021/001711 WO 20210119
- Main IPC: H01L27/146
- IPC: H01L27/146

Abstract:
A method for manufacturing a back-illuminated solid-state imaging device includes a first step of preparing a first conduction-type semiconductor layer having a front surface and a back surface, a second step of forming a first asperity region on the front surface of the semiconductor layer by selectively etching the front surface of the semiconductor layer, a third step of forming a second asperity region on the front surface of the semiconductor layer by smoothening asperities of the first asperity region, and a fourth step of forming an insulating layer along the second asperity region and forming a plurality of charge transfer electrodes on the insulating layer.
Information query
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