US 12,408,530 B2
Display panel, manufacturing method therefor, and display apparatus
Yongfeng Zhang, Beijing (CN); Rui Huang, Beijing (CN); Zhiwei Liang, Beijing (CN); and Huajie Yan, Beijing (CN)
Assigned to BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/762,688
Filed by BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed May 7, 2021, PCT No. PCT/CN2021/092209
§ 371(c)(1), (2) Date Mar. 22, 2022,
PCT Pub. No. WO2022/007494, PCT Pub. Date Jan. 13, 2022.
Claims priority of application No. 202010660421.2 (CN), filed on Jul. 10, 2020.
Prior Publication US 2022/0416195 A1, Dec. 29, 2022
Int. Cl. H01L 51/52 (2006.01); H01L 51/00 (2006.01); H01L 51/50 (2006.01); H01L 51/56 (2006.01); H10K 30/80 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/17 (2023.01); H10K 50/813 (2023.01); H10K 50/818 (2023.01); H10K 50/844 (2023.01); H10K 59/35 (2023.01); H10K 59/80 (2023.01); H10K 71/00 (2023.01); H10K 50/18 (2023.01); H10K 59/12 (2023.01); H10K 102/00 (2023.01)
CPC H10K 59/35 (2023.02) [H10K 30/865 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/17 (2023.02); H10K 50/171 (2023.02); H10K 50/813 (2023.02); H10K 50/818 (2023.02); H10K 50/844 (2023.02); H10K 59/80515 (2023.02); H10K 59/80518 (2023.02); H10K 71/00 (2023.02); H10K 71/621 (2023.02); H10K 50/18 (2023.02); H10K 50/181 (2023.02); H10K 59/12 (2023.02); H10K 59/873 (2023.02); H10K 2102/3026 (2023.02)] 14 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a substrate, comprising a plurality of sub-pixel units;
wherein each of the plurality of sub-pixel units comprises at least two first electrodes which are independently arranged in a same layer;
each first electrode comprises at least two conductive layers which are arranged in a stacked manner;
an edge of a top conductive layer away from the substrate extends beyond an edge of a bottom conductive layer;
an orthographic projection of the bottom conductive layer on the substrate falls within a range of an orthographic projection of the top conductive layer on the substrate; and
a portion of the edge of the top conductive layer extending beyond the edge of the bottom conductive layer extends towards one side of the substrate to constitute a sloping surface;
wherein each of the plurality of sub-pixel units further comprises an organic functional layer arranged on a side of the first electrodes facing away from the substrate;
the organic functional layer comprises a light emitting layer and a light emitting crosstalk layer arranged between the first electrodes and the light emitting layer;
the light emitting crosstalk layer is a P-type doping layer; and
light emitting crosstalk layers in each of the plurality of the sub-pixel units are independent of each other, and light emitting layers in each of the plurality of the sub-pixel units are independent of each other;
wherein in a direction facing away from the substrate, the organic functional layer further comprises a hole injection layer, a hole transmission layer and an electron blocking layer arranged in a stacked manner between the first electrodes and the light emitting layer; and
hole injection layers in each of the plurality of the sub-pixel units are of an integrated structure, hole transmission layers in each of the plurality of the sub-pixel units are of an integrated structure, electron blocking layers in each of the plurality of the sub-pixel units are independent of each other, and the light emitting crosstalk layer is arranged between the electron blocking layers and the hole transmission layers;
wherein the organic functional layer further comprises a hole blocking layer, an electron transmission layer and an electron injection layer arranged in a stacked manner in sequence on a side of the light emitting layer facing away from the substrate;
hole blocking layers in each of the plurality of the sub-pixel units are of an integrated structure, electron transmission layers in each of the plurality of the sub-pixel units are of an integrated structure, and electron injection layers in each of the plurality of the sub-pixel units are independent of each other; and
the electron injection layer is a N-type doping layer.