US 12,471,419 B2
LED display panel and display device
Daobing Hu, Guangdong (CN)
Assigned to TCL China Star Optoelectronics Technology Co., Ltd., Shenzhen (CN)
Filed by TCL China Star Optoelectronics Technology Co., Ltd., Guangdong (CN)
Filed on Aug. 30, 2022, as Appl. No. 17/898,543.
Claims priority of application No. 202210893979.4 (CN), filed on Jul. 27, 2022.
Prior Publication US 2024/0038944 A1, Feb. 1, 2024
Int. Cl. H10H 20/855 (2025.01); H01L 25/075 (2006.01)
CPC H10H 20/855 (2025.01) [H01L 25/0753 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A Light Emitting Diode (LED) display panel, comprising:
a substrate;
a light source assembly disposed on the substrate; and
a light filter layer disposed on the light source assembly, being colorless and transparent, and comprising a light filter region, wherein the light filter region comprises a light-transmitting region and a non-light-transmitting region, the non-light-transmitting region is disposed outside the light-transmitting region, an incident angle of a light emitted by the light source assembly to the light-transmitting region is less than a total reflection critical angle of the light filter layer, an incident angle of the light emitted by the light source assembly to the non-light-transmitting region is greater than or equal to the total reflection critical angle of the light filter layer, and the total reflection critical angle is a critical angle at which the light exits from an upper surface of the light filter layer.