US 12,342,706 B2
Display panel and display apparatus
Cheng Zeng, Beijing (CN); Jaeho Lee, Beijing (CN); Zhen Sun, Beijing (CN); and Lulin Ma, Beijing (CN)
Assigned to CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/780,304
Filed by CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Jun. 16, 2021, PCT No. PCT/CN2021/100430
§ 371(c)(1), (2) Date May 26, 2022,
PCT Pub. No. WO2022/261870, PCT Pub. Date Dec. 22, 2022.
Prior Publication US 2024/0164189 A1, May 16, 2024
Int. Cl. H10K 59/80 (2023.01); H10K 50/856 (2023.01); H10K 50/858 (2023.01); H10K 59/38 (2023.01); H10K 102/00 (2023.01)
CPC H10K 59/80 (2023.02) [H10K 50/856 (2023.02); H10K 50/858 (2023.02); H10K 59/38 (2023.02); H10K 59/873 (2023.02); H10K 59/878 (2023.02); H10K 59/80518 (2023.02); H10K 59/8731 (2023.02); H10K 59/879 (2023.02); H10K 59/8792 (2023.02); H10K 2102/351 (2023.02)] 18 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a plurality of light-emitting devices on a substrate, wherein each of the plurality of light-emitting devices is configured to emit light of a preset color; the light-emitting device includes a first electrode, a second electrode and a light-emitting functional layer, the first electrode and the second electrode are opposite to each other, the light-emitting functional layer is between the second electrode and the first electrode, and the first electrode is a reflective electrode;
a color conversion layer comprising a plurality of light exiting parts, wherein each of the plurality of light exiting part corresponds to one of the plurality of light-emitting devices, the light exiting part is on a side of the second electrode away from the light-emitting functional layer, and the light exiting part is configured to receive the light emitted by the corresponding light-emitting device and emit light of a color same as or different from the preset color; and
an optical layer between the color conversion layer and the plurality of light-emitting devices, wherein the optical layer is configured to transmit at least a portion of the light of the preset color and reflect the light of a color different from the preset color emitted by the color conversion layer;
wherein the second electrodes corresponding to at least two light exiting parts, which emit light of different colors, have different reflectivities,
wherein the optical layer comprises a plurality of first optical sub-layers and a plurality of second optical sub-layers, which are alternately stacked, and a refractivity of each of the plurality of first optical sub-layers is less than a refractivity of each of the plurality of second optical sub- layers,
wherein the display panel further comprises:
a first encapsulation layer between the plurality of light-emitting devices and the optical layer; and
a second encapsulation layer between the first encapsulation layer and the optical layer;
wherein the first encapsulation layer is made of an inorganic material, and the second encapsulation layer is made of an organic material; the optical layer is directly adjacent to the second encapsulation layer, an orthographic projection of each of the plurality of first optical sub-layers and the plurality of second optical sub-layers on the substrate covers an orthographic projection of the plurality of light-emitting devices on the substrate, and the first encapsulation layer, the second encapsulation layer and the optical layer form an encapsulation structure to encapsulate the plurality of light-emitting devices.