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:
Oct. 27, 2020
Filed:
Dec. 05, 2018
China Wafer Level Csp Co., Ltd., Suzhou, Jiangsu, CN;
China Wafer Level CSP Co., Ltd., Suzhou, Jiangsu, CN;
Abstract
An optical fingerprint recognition chip package and a packaging method are provided. In the optical fingerprint recognition chip package, a cover plate is arranged on a front surface of an optical fingerprint recognition chip, the cover plate includes a substrate and a light shielding layer. The light shielding layer is arranged on a surface of the substrate facing away from the optical fingerprint recognition chip. The substrate is provided with multiple first through holes for exposing photosensitive pixels of the optical fingerprint recognition chip. The light shielding layer is provided with multiple second through holes in one-to-one correspondence with the first through holes. During fingerprint recognition, light reflected by a finger is split through the first through holes and the second through holes, such that crosstalk among different photosensitive pixels is reduced, and the accuracy of fingerprint recognition is improved.