The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 2022
Filed:
Apr. 09, 2020
Powerchip Semiconductor Manufacturing Corporation, Hsinchu, TW;
Shih-Ping Lee, Hsinchu, TW;
Yi-Ping Lin, Hsinchu County, TW;
Yu-Ching Liao, Hsinchu County, TW;
Ya-Ting Chen, Hsinchu County, TW;
Hsin-Ying Tung, Hsinchu, TW;
Powerchip Semiconductor Manufacturing Corporation, Hsinchu, TW;
Abstract
A solid-state image sensor with pixels each including a photoelectric conversion portion made of a second type doped semiconductor layer and a semiconductor material layer, and the second type doped semiconductor layer contacts a first type doped semiconductor substrate. An anti-reflective portion is provided with multiple micro pillars on the semiconductor material layer, wherein micro pillars are isolated by recesses extending into the photoelectric conversion portion, and the refractive index of the micro pillar gradually decreases from bottom to top and is smaller than the refractive index of the light-receiving portion of the semiconductor material layer.