US 9,811,710 B2
Fingerprint identifying device and fingerprint identifying system
Jian Gao, Beijing (CN); Yingming Liu, Beijing (CN); Xiaochen Niu, Beijing (CN); Xiaochuan Chen, Beijing (CN); Haisheng Wang, Beijing (CN); Qian Wang, Beijing (CN); Ming Yang, Beijing (CN); and Pengcheng Lu, Beijing (CN)
Assigned to BOE Technology Group Co., Ltd., Beijing (CN); and Beijing BOE Optoelectronics Technology Co., Ltd., Beijing (CN)
Appl. No. 15/116,172
Filed by BOE Technology Group Co., Ltd., Beijing (CN); and Beijing BOE Optoelectronics Technology Co., Ltd., Beijing (CN)
PCT Filed Jan. 21, 2016, PCT No. PCT/CN2016/071620
§ 371(c)(1), (2) Date Aug. 2, 2016,
PCT Pub. No. WO2017/036072, PCT Pub. Date Mar. 9, 2017.
Claims priority of application No. 2015 1 0543546 (CN), filed on Aug. 28, 2015.
Prior Publication US 2017/0262686 A1, Sep. 14, 2017
Int. Cl. G06K 9/00 (2006.01)
CPC G06K 9/0004 (2013.01) [G06K 9/00053 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A fingerprint identifying device, comprising:
a substrate;
a transparent cover plate, located right above the substrate;
a detection light source, located on a first side of the transparent cover plate; and
a photoelectric sensor, located on a side of a lower surface of the transparent cover plate, wherein,
a refractive index of the transparent cover plate is less than a refractive index of a skin of a human fingerprint part, the transparent cover plate has a side surface on the first side, and an angle α between the side surface and an upper surface of the transparent cover plate is an acute angle,
the detection light source is configured to provide a light beam towards the side surface of the transparent cover plate, so that the light beam is incident to the upper surface of the transparent cover plate through the side surface of the transparent cover plate, and the light beam is totally reflected on the upper surface of the transparent cover plate in a case that the upper surface of the transparent cover plate is in contact with air,
the photoelectric sensor is configured to receive a light beam reflected from the upper surface of the transparent cover plate.