US 12,356,842 B2
Display panel having sub-color filters, and display device including the same
Kai Hu, Wuhan (CN)
Assigned to WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Wuhan (CN)
Appl. No. 17/776,405
Filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Wuhan (CN)
PCT Filed Apr. 14, 2022, PCT No. PCT/CN2022/086745
§ 371(c)(1), (2) Date May 12, 2022,
PCT Pub. No. WO2023/184584, PCT Pub. Date Oct. 5, 2023.
Claims priority of application No. 202210316071.7 (CN), filed on Mar. 28, 2022.
Prior Publication US 2025/0017088 A1, Jan. 9, 2025
Int. Cl. H10K 59/80 (2023.01); H10K 59/122 (2023.01); H10K 59/35 (2023.01); H10K 59/38 (2023.01)
CPC H10K 59/8792 (2023.02) [H10K 59/122 (2023.02); H10K 59/38 (2023.02); H10K 59/35 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a substrate;
a pixel definition layer, positioned at one side of the substrate and provided with a plurality of pixel openings;
a light emitting layer, positioned in the plurality of pixel openings, the light emitting layer comprising a plurality of light emitting pixels;
a color filter layer, positioned at one side of the light emitting layer facing away the substrate, the color filter layer comprising a plurality of color filters respectively corresponding to plurality of pixel openings, the plurality of color filters comprising a first color filter, a second color filter and a third color filter of different colors, the first color filter comprising a first sub-color filter and a second sub-color filter, and the second sub-color filter is positioned between the second color filter and the third color filter;
a planarization layer, covering one side of the color filter layer facing away the substrate; and
a fourth color filter, positioned at one side of the second color filter facing away the substrate;
wherein a distance between an edge of an orthogonal projection of the first sub-color filter on the pixel definition layer and a corresponding pixel opening is a first distance; a distance between an edge of an orthogonal projection of the second color filter and the third color filter on the pixel definition layer and a corresponding pixel opening is a second distance; and the first distance is greater than the second distance;
wherein a refractive index of the black matrix is greater than a refractive index of the planarization layer, and a refractive index of the fourth color filter is between the refractive index of the black matrix and the refractive index of the planarization layer.