US 12,469,832 B2
Light-emitting panel and display device
Pengfei Qiu, Shanghai (CN); and Lihua Wang, Shanghai (CN)
Assigned to Shanghai Tianma Microelectronics Co., Ltd., Shanghai (CN); and Chengdu Tianma Microelectronics Co., Ltd., Chengdu (CN)
Filed by Shanghai Tianma Microelectronics Co., Ltd., Shanghai (CN); and Chengdu Tianma Microelectronics Co., Ltd., Sichuan (CN)
Filed on Jun. 21, 2022, as Appl. No. 17/844,839.
Claims priority of application No. 202210239031.7 (CN), filed on Mar. 11, 2022.
Prior Publication US 2022/0320060 A1, Oct. 6, 2022
Int. Cl. H01L 25/16 (2023.01); G09G 3/32 (2016.01); H01L 23/00 (2006.01); H10D 86/40 (2025.01); H10D 86/60 (2025.01); H10H 20/857 (2025.01)
CPC H01L 25/167 (2013.01) [H10D 86/441 (2025.01); H10D 86/60 (2025.01); H10H 20/857 (2025.01); G09G 3/32 (2013.01); G09G 2300/0842 (2013.01); G09G 2330/021 (2013.01); H01L 24/05 (2013.01); H01L 24/16 (2013.01); H01L 2224/05567 (2013.01); H01L 2224/05573 (2013.01); H01L 2224/16147 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A light-emitting panel, comprising:
a base substrate;
a first reflective layer located on the base substrate and a plurality of light-emitting elements located on the base substrate, wherein the first reflective layer comprises a first reflective portion and a plurality of hollow portions; a light-emitting element of the plurality of light-emitting elements is located in a hollow portion of the plurality of hollow portions and a gap exists between the light-emitting element in the hollow portion and the first reflective portion; and
at least one second reflective portion located between the base substrate and the first reflective layer, wherein in a direction perpendicular to a plane where the base substrate is located, the at least one second reflective portion covers the gap;
wherein the light-emitting panel comprises a plurality of second reflective portions corresponding to the plurality of hollow portions, two adjacent ones of the plurality of second reflective portions are not connected to each other;
a height of the light-emitting element in the direction perpendicular to the plane where the base substrate is located is H1, and a minimum width of the gap between the light-emitting element and the first reflective portion along a first direction is d1, a distance between a surface of a side of a second reflective portion of the plurality of second reflective portions facing away from the base substrate and a surface of a side of the light-emitting element facing away from the base substrate is H2;
the first direction is parallel to the plane where the base substrate is located; and
along the first direction, a shortest distance d2 between the light-emitting element and an edge of the second reflective portion is at least (d1/H1)*H2.