US 11,810,389 B2
Fingerprint recognition substrate, driving method thereof and display device
Yi Liu, Beijing (CN); Shijun Wang, Beijing (CN); Wenkai Mu, Beijing (CN); Bo Feng, Beijing (CN); Xinlan Yang, Beijing (CN); Yang Wang, Beijing (CN); Zhan Wei, Beijing (CN); Tengfei Ding, Beijing (CN); Jun Fan, Beijing (CN); and Chengfu Xu, Beijing (CN)
Assigned to BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/419,909
Filed by Beijing BOE Display Technology Co., Ltd., Beijing (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Sep. 29, 2020, PCT No. PCT/CN2020/118871
§ 371(c)(1), (2) Date Jun. 30, 2021,
PCT Pub. No. WO2022/067516, PCT Pub. Date Apr. 7, 2022.
Prior Publication US 2022/0319221 A1, Oct. 6, 2022
Int. Cl. G06V 40/13 (2022.01); G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G06V 40/1306 (2022.01) [G06F 3/0412 (2013.01); G06F 3/0446 (2019.05); G06F 3/04164 (2019.05); G06F 3/04166 (2019.05)] 13 Claims
OG exemplary drawing
 
1. A fingerprint recognition substrate, comprising: a plurality of fingerprint recognition units arranged in an array, a plurality of signal reading line groups and a plurality of gating circuits, wherein the plurality of fingerprint recognition units are divided into a plurality of first fingerprint recognition groups arranged along a row direction, the plurality of first fingerprint recognition groups are in one-to-one correspondence with the plurality of signal reading line groups, and the plurality of signal reading line groups are in one-to-one correspondence with the plurality of gating circuits;
the first fingerprint recognition group comprises: a plurality of columns of fingerprint recognition units consecutively arranged in the row direction, the signal reading line group comprises: a plurality of signal reading lines which are in one-to-one correspondence with the plurality of columns of fingerprint recognition units in a corresponding first fingerprint recognition group, and the signal reading line is coupled to a corresponding column of fingerprint recognition units;
the gating circuit comprises: a plurality of switch circuits which are in one-to-one correspondence with the plurality of signal reading lines in a corresponding signal reading line group, each signal reading line is coupled to one signal transmission channel on a signal receiving unit through a corresponding switch circuit, and the switch circuit is configured to control connection/disconnection between the signal reading line and the signal transmission channel coupled to the switch circuit;
among all the signal reading lines, different signal reading lines in a same signal reading line group are coupled to different signal transmission channels, and at least two signal reading lines in different signal reading line groups are coupled to a same signal transmission channel; and
the signal transmission channels on the signal receiving unit are divided into at least two signal transmission channel groups, each signal reading line group corresponds to one signal transmission channel group, a number of the signal transmission channels in the signal transmission channel group is greater than a number of the signal reading lines in the signal reading line group corresponding to the signal transmission channel group, and a fingerprint recognition region corresponding to each signal reading line group has a length in the row direction greater than a length of a complete fingerprint.