US 12,382,810 B2
Organic electroluminescent display panel and manufacturing method therefor, and display device
Tiancheng Yu, Beijing (CN)
Assigned to CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/435,083
Filed by Chengdu BOE Optoelectronics Technology Co., Ltd., Chengdu (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Feb. 7, 2021, PCT No. PCT/CN2021/075829
§ 371(c)(1), (2) Date Aug. 31, 2021,
PCT Pub. No. WO2021/164599, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. 202010105135.X (CN), filed on Feb. 20, 2020.
Prior Publication US 2022/0140017 A1, May 5, 2022
Int. Cl. H10K 59/35 (2023.01); H10K 50/125 (2023.01); H10K 59/122 (2023.01); H10K 59/173 (2023.01); H10K 59/38 (2023.01); H10K 59/80 (2023.01); H10K 85/30 (2023.01)
CPC H10K 59/35 (2023.02) [H10K 59/8792 (2023.02); H10K 59/122 (2023.02); H10K 59/173 (2023.02); H10K 59/38 (2023.02); H10K 85/322 (2023.02); H10K 85/371 (2023.02)] 15 Claims
OG exemplary drawing
 
1. An organic electroluminescence display panel, comprising:
a base substrate on which a plurality of sub-pixels are formed, each of the sub-pixels comprising a first electrode layer and a second electrode layer arranged opposite to each other; and an organic light-emitting function layer between the first electrode layer and the second electrode layer, the second electrode layer being arranged at a displaying side of the organic light-emitting function layer, wherein at least one of the sub-pixels further comprises:
a light-absorbing layer arranged at a side of the second electrode layer away from the organic light-emitting function layer, projections of the light-absorbing layer and the organic light-emitting function layer on the base substrate being overlapped with each other,
wherein an absorption peak wavelength of an absorption spectrum curve of the light-absorbing layer is greater than an emission peak wavelength of an emission spectrum curve of a corresponding sub-pixel, a minimum absorption wavelength of the absorption spectrum curve of the light-absorbing layer is greater than a minimum emission wavelength of the emission spectrum curve of the corresponding sub-pixel, and a wavelength range covered by the absorption spectrum curve of the light-absorbing layer overlaps with a wavelength range covered by the emission spectrum curve of the corresponding sub-pixel,
wherein;
the plurality of sub-pixels comprise red sub-pixels, green sub-pixels, and blue sub-pixels, wherein each of the green sub-pixels or each of the blue sub-pixels comprises the light-absorbing layer,
the sub-pixel further comprise a pixel defining layer for defining a sub-pixel area, the pixel defining layer has an opening, and the light-absorbing layer corresponding to the sub-pixel comprises a portion located in the opening of the pixel defining layer, and
in the opening and in a direction perpendicular to the display panel, a distance from a surface of the light-absorbing layer away from the base substrate to the base substrate is less than or equal to a distance from a surface of the pixel defining layer away from the base substrate to the base substrate.