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:
Apr. 26, 2022
Filed:
Nov. 19, 2019
Shenzhen Goodix Technology Co., Ltd., Shenzhen, CN;
SHENZHEN GOODIX TECHNOLOGY CO., LTD., Shenzhen, CN;
Abstract
The present disclosure provides an image sensor including a substrate () and at least one pixel unit. The pixel unit comprises a photodetector () arranged in the substrate, a photosensitive surface of the photodetector facing a back surface of the substrate to generate a charge upon receiving an incident light from the back surface of the substrate, a spherical crown structure () arranged on the substrate and located on an opposite surface of the photosensitive surface, a conformal dielectric layer () arranged on the spherical crown structure and used to generate a dielectric-layer reflective light when the incident light reaches the conformal dielectric layer, and a reflective layer () arranged on the conformal dielectric layer and used to generate a reflective-layer reflective light when the incident light reaches the reflective layer. In this way, an absorption ratio for the incident light is increased, thereby improving signal quality of an image.