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:
Mar. 13, 2018
Filed:
Aug. 23, 2016
Taiwan Semiconductor Manufacturing Company Limited, Hsin-Chu, TW;
Shyh-Fann Ting, Tainan, TW;
Ching-Chun Wang, Tainan, TW;
Chen-Jong Wang, Hsin-Chu, TW;
Jhy-Jyi Sze, Hsin-Chu, TW;
Chun-Ming Su, Kaohsiung, TW;
Wei Chuang Wu, Tainan, TW;
Yu-Jen Wang, Kaohsiung, TW;
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LIMITED, Hsin-Chu, TW;
Abstract
Among other things, one or more image sensors and techniques for forming image sensors are provided. An image sensor comprises a photodiode array configured to detect light. The image sensor comprises an oxide grid comprising a first oxide grid portion and a second oxide grid portion. A metal grid is formed between the first oxide grid portion and the second oxide grid portion. The oxide grid and the metal grid define a filler grid. The filler grid comprises a filler grid portion, such as a color filter, that allows light to propagate through the filler grid portion to an underlying photodiode. The oxide grid and the metal grid confine or channel the light within the filler grid portion. The oxide grid and the metal grid are formed such that the filler grid provides a relatively shorter propagation path for the light, which improves light detection performance of the image sensor.