US 12,169,978 B2
Print recognition module and display apparatus
Yue Geng, Beijing (CN); Kuiyuan Wang, Beijing (CN); Zhonghuan Li, Beijing (CN); Cheng Li, Beijing (CN); Yi Dai, Beijing (CN); Yajie Feng, Beijing (CN); Chaoyang Qi, Beijing (CN); Zefei Li, Beijing (CN); Xiaoguan Li, Beijing (CN); and Congcong Xi, Beijing (CN)
Assigned to Beijing BOE Sensor Technology Co., Ltd., Beijing (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 18/038,093
Filed by Beijing BOE Sensor Technology Co., Ltd., Beijing (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed May 27, 2021, PCT No. PCT/CN2021/096501
§ 371(c)(1), (2) Date May 22, 2023,
PCT Pub. No. WO2022/246757, PCT Pub. Date Dec. 1, 2022.
Prior Publication US 2024/0005694 A1, Jan. 4, 2024
Int. Cl. G06V 40/13 (2022.01); H01L 27/146 (2006.01)
CPC G06V 40/1318 (2022.01) [G06V 40/1329 (2022.01); H01L 27/14678 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A print recognition module, comprising:
a base substrate;
a driving circuit layer on a side of the base substrate, wherein the driving circuit layer comprises a plurality of driving transistors arranged in an array;
a first insulating layer on a side, facing away from the base substrate, of the driving circuit layer; wherein the first insulating layer comprises a plurality of first via holes running through a thickness of the first insulating layer;
a connecting electrode layer on a side, facing away from the driving circuit layer, of the first insulating layer; wherein the connecting electrode layer comprises a plurality of connecting electrodes which are in one-to-one correspondence with first electrodes of plurality of the driving transistors, and the plurality of connecting electrodes are electrically connected to the first electrodes of the plurality of driving transistors through the plurality of first via holes; and
a plurality of photoelectric conversion portions on a side, facing away from the first insulating layer, of the connecting electrode layer; wherein the plurality of photoelectric conversion portions are in correspondence with the plurality of connecting electrodes; orthographic projections of the plurality of photoelectric conversion portions on the base substrate fall within orthographic projections of the plurality of connecting electrodes on the base substrate; and surfaces of sides, close to the base substrate, of the plurality of photoelectric conversion portions all come into contact with the plurality of connecting electrodes;
wherein orthographic projections of the first electrodes of the plurality of driving transistors on the base substrate cover the orthographic projections of the plurality of connecting electrodes on the base substrate;
wherein the first electrodes of the plurality of driving transistors comprise: first parts and second parts connected with the first parts;
wherein the orthographic projections of the plurality of connecting electrodes on the base substrate fall within orthographic projections of the first parts on the base substrate;
patterns of the orthographic projections of the plurality of connecting electrodes on the base substrate are similar to patterns of the orthographic projections of the first parts on the base substrate; and
the orthographic projections of the plurality of connecting electrodes on the base substrate do not mutually overlap orthographic projections of the second parts on the base substrate.