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:
Jul. 02, 2019
Filed:
Sep. 29, 2015
Boe Technology Group Co., Ltd., Beijing, CN;
Beijing Boe Optoelectronics Technology Co., Ltd., Beijing, CN;
Xiaoliang Ding, Beijing, CN;
Xue Dong, Beijing, CN;
Haisheng Wang, Beijing, CN;
Xiaochuan Chen, Beijing, CN;
Yingming Liu, Beijing, CN;
Shengji Yang, Beijing, CN;
Lei Wang, Beijing, CN;
Wei Liu, Beijing, CN;
Weijie Zhao, Beijing, CN;
Changfeng Li, Beijing, CN;
Tao Ren, Beijing, CN;
BOE TECHNOLOGY GROUP CO., LTD., Beijing, CN;
BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Beijing, CN;
Abstract
The disclosure provides a palmprint recognition circuit based on a LTPS technology, a palmprint recognition method and a display screen. The palmprint recognition circuit comprises an optical signal collecting unit, configured to collect an optical signal indicating a palmprint information and convert the collected optical signal into a current signal; a current signal amplifying unit, configured to amplify the converted current signal; and a current signal detecting unit, and configured to detect an intensity of the amplified current signal which indicates a ridge line or a valley line of the palmprint in the palmprint information. Therefore, it can solve the problem of having no palmprint recognition circuit and method for a LTPS-TFT display panel. This can eliminate an influence of a change of parasitic capacitance on the recognition result, wherein the change of parasitic capacitance is caused by a change of a wiring manner in the circuit.