US 12,265,289 B2
Display module and display device for avoiding inconsistent brightness and viewing angle at a splicing position of spliced display modules
Hongyuan Xu, Shenzhen (CN); Xing Lei, Shenzhen (CN); and Meinan Li, Shenzhen (CN)
Assigned to TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Shenzhen (CN)
Appl. No. 17/620,110
Filed by TCL China Star Optoelectronics Technology Co., Ltd., Shenzhen (CN)
PCT Filed Dec. 8, 2021, PCT No. PCT/CN2021/136595
§ 371(c)(1), (2) Date Dec. 16, 2021,
PCT Pub. No. WO2023/092662, PCT Pub. Date Jun. 1, 2023.
Claims priority of application No. 202111400030.8 (CN), filed on Nov. 24, 2021.
Prior Publication US 2024/0126109 A1, Apr. 18, 2024
Int. Cl. G02F 1/1333 (2006.01); G02F 1/13 (2006.01); G02F 1/1335 (2006.01); G02F 1/13357 (2006.01)
CPC G02F 1/1323 (2013.01) [G02F 1/13336 (2013.01); G02F 1/133388 (2021.01); G02F 1/133512 (2013.01); G02F 1/133603 (2013.01); G02F 1/133606 (2013.01); G02F 1/133611 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A display module comprising a display panel and a compensation display assembly, wherein the display panel comprises a display region and a frame region adjacent to the display region, and wherein the compensation display assembly is disposed on the display panel and is positioned in the frame region, and wherein the compensation display assembly comprises:
a display function layer disposed on the display panel and positioned in the frame region; and
a viewing angle brightness adjustment layer comprising an anti-peep function layer disposed above the display function layer and a light-transmitting functional layer laminated with the anti-peep function layer,
wherein transmittances of the anti-peep function layer at different front viewing angles within a front viewing angle range of the display module are 100%,
the light-transmitting functional layer is configured to adjust a brightness of light emitted from the display function layer within the front viewing angle range of the display module after exiting from a side of the viewing angle brightness adjustment layer away from the display function layer, to make a ratio of a viewing angle brightness of the compensation display assembly to a viewing angle brightness of the display panel in the front viewing angle range within a preset threshold range,
the anti-peep function layer is configured to adjust a brightness of light emitted from the display function layer within a side viewing angle range of the display module after exiting from a side of the viewing angle brightness adjustment layer away from the display function layer, to make a ratio of a viewing angle brightness of the compensation display assembly to a viewing angle brightness of the display panel at any one of side viewing angles within the preset threshold range;
wherein an angle value of the any one of the front viewing angles within the front viewing angle range is less than or equal to the preset angle value, and an angle value of the any one of the side viewing angles within the side viewing angle range is greater than a preset angle value,
the light-transmitting functional layer further comprises a first light-transmitting protective layer disposed on the anti-peep function layer close to the display function layer,
the display function layer comprises a plurality of light-emitting devices arranged at intervals, and
the anti-peep function layer comprises black retaining walls each disposed between every adjacent two of the light-emitting devices, and a height of a black retaining wall is greater than a height of each of the light-emitting devices in a direction perpendicular to the display module.