US 12,142,713 B2
LED display screen
Lin Wang, Guangdong (CN); Shijie Li, Guangdong (CN); Fei Hu, Guangdong (CN); Wei Sun, Guangdong (CN); and Yi Li, Guangdong (CN)
Assigned to Appotronics Corporation Limited, Guangdong (CN)
Appl. No. 17/280,782
Filed by APPOTRONICS CORPORATION LIMITED, Guangdong (CN)
PCT Filed Sep. 26, 2019, PCT No. PCT/CN2019/107988
§ 371(c)(1), (2) Date Aug. 10, 2021,
PCT Pub. No. WO2020/063700, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 201811137849 (CN), filed on Sep. 28, 2018.
Prior Publication US 2022/0005988 A1, Jan. 6, 2022
Int. Cl. G02B 5/02 (2006.01); G02B 5/30 (2006.01); G09F 9/33 (2006.01); H01L 25/075 (2006.01); H01L 33/58 (2010.01); H01L 33/60 (2010.01)
CPC H01L 33/60 (2013.01) [G02B 5/0226 (2013.01); G02B 5/0284 (2013.01); G02B 5/3025 (2013.01); H01L 25/0753 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An LED display screen, comprising:
an LED array comprising a plurality of LED light-emitting units and configured to emit light;
an optical diffusion film provided on a light-emitting side of the LED array;
a matrix light block frame comprising a plurality of hollow light block grids, the plurality of hollow light block grids being arranged in one-to-one correspondence with the plurality of LED light-emitting units; and
a substrate configured to support the LED array and the matrix light block frame,
wherein the light emitted by each of the plurality of LED light-emitting units is transmitted through one of the plurality of hollow light block grids corresponding to a LED light-emitting unit of the plurality of LED light-emitting units and then is diffused to a viewer side through the optical diffusion film, and the plurality of LED light-emitting units emits light towards the plurality of hollow light block grids.