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. 08, 2022
Filed:
Feb. 13, 2020
Xiamen Tianma Micro-electronics Co., Ltd, Xiamen, CN;
Meng Lai, Xiamen, CN;
Lifeng Lu, Xiamen, CN;
Zhilong Zhuang, Xiamen, CN;
Jiancai Huang, Xiamen, CN;
Yumin Xu, Xiamen, CN;
Xianyan Yang, Xiamen, CN;
XIAMEN TIANMA MICRO-ELECTRONICS CO., LTD, Xiamen, CN;
Abstract
The present disclosure provides a display panel and a display device. The display panel includes a plurality of fingerprint recognition circuits. At least one of the plurality of fingerprint recognition circuits includes a light sense signal obtaining unit and a subtracted. The light sense signal obtaining unit is configured to obtain a first light sense voltage value and a second light sense voltage value, the first light sense voltage value is related to a first power voltage value, the second light sense voltage value is related to a second power voltage value, and the first power voltage value is greater than the second power voltage value. The subtracted is configured to subtract the second light sense voltage value from the first light sense voltage value to obtain a light sense data value.