US 11,899,302 B2
Display panel and display device
Shubai Zhang, Beijing (CN); Jiantao Liu, Beijing (CN); Haiwei Sun, Beijing (CN); Ming Zhai, Beijing (CN); Yutao Hao, Beijing (CN); Litao Fan, Beijing (CN); Shuo Wang, Beijing (CN); Qin Xin, Beijing (CN); and Zhiqiang Zhang, Beijing (CN)
Assigned to BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/424,423
Filed by BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Jan. 26, 2021, PCT No. PCT/CN2021/073714
§ 371(c)(1), (2) Date Jul. 20, 2021,
PCT Pub. No. WO2021/169703, PCT Pub. Date Sep. 2, 2021.
Claims priority of application No. 202010131445.9 (CN), filed on Feb. 28, 2020.
Prior Publication US 2022/0308382 A1, Sep. 29, 2022
Int. Cl. G02F 1/1333 (2006.01); G02F 1/1335 (2006.01); G06V 40/13 (2022.01)
CPC G02F 1/13338 (2013.01) [G02F 1/133553 (2013.01); G06V 40/1318 (2022.01)] 17 Claims
OG exemplary drawing
 
1. A display panel comprising: a liquid crystal display module, a reflective film, and a fingerprint identification module;
wherein the liquid crystal display module is located on a first side of the reflective film, and the fingerprint identification module is located on a second side of the reflective film opposite to the first side,
wherein the fingerprint identification module comprises an invisible light emitting unit and an invisible light sensor, the invisible light emitting unit is configured to emit invisible light in a direction towards the reflective film, the invisible light sensor is configured to receive invisible light reflected,
wherein the reflective film is configured to transmit the invisible light and reflect visible light reaching the reflective film through the liquid crystal display module,
wherein the liquid crystal display module comprises a front light source and a display unit on the first side of the reflective film, the display unit is between the front light source and the reflective film, and the display unit comprises a liquid crystal layer,
wherein the front light source comprises a light guide plate and a visible light emitting element, the light guide plate is configured to receive visible light from the visible light emitting element and guide the visible light to the display unit, and
wherein the light guide plate comprises a body and a plurality of light extraction protrusions, the plurality of light extraction protrusions is located on a light exit surface of the body facing the display unit.