IP Library › Granted Patent US 12696588
Granted Patent B2
US 12696588 · App. 17/992,261 · Granted Jul 28, 2026

Display panel, display device, and forming method of display panel

Inventors: Chao Chi Peng (Hefei, CN); Xuyang Fang (Hefei, CN); Xiaoling Li (Hefei, CN); Mingxing Liu (Hefei, CN); Shizhen Feng (Hefei, CN); Shuaiyan Gan (Hefei, CN)
Assignee: Hefei Visionox Technology Co., Ltd.
H10H20/8312H10H20/01H10W90/00H10H20/032
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Quick Facts
Patent No.
US 12696588
App. No.
17/992,261
Granted
Jul 28, 2026
Kind
B2
Abstract

A display panel, a display device and a forming method of the display panel. The display panel includes a first region, and the display panel includes: a substrate; a light-emitting device layer stacked on the substrate. The light-emitting device layer includes a plurality of first light-emitting devices distributed in an array in the first region, and the first light-emitting device includes a first electrode, a particle unit disposed at least partially in a same layer with the first electrode and surrounding the first electrode, a first light-emitting module located on the first electrode, and a second electrode located on the first light-emitting module. The particle unit includes a glue layer and a plurality of particles distributed within the glue layer.

Claims (46)

1 . A display panel including a first region, wherein the display panel comprises:

a substrate;

a light-emitting device layer stacked on the substrate, wherein the light-emitting device layer comprises a pixel-defining layer disposed on the substrate and a plurality of first light-emitting devices distributed in an array in the first region, and wherein the first light-emitting device comprises:

a first electrode,

a particle unit disposed at least partially in a same layer with the first electrode and surrounding the first electrode,

a first light-emitting module located on the first electrode, and

a second electrode located on the first light-emitting module and the pixel-defining layer covers the particle unit;

wherein:

the particle unit comprises a glue layer and a plurality of particles distributed within the glue layer,

an orthographic projection of at least part of one particle of at least part of the particles on the substrate does not completely overlap with an orthographic projection of the first electrode on the substrate,

the thickness of the particle unit is less than the thickness of the pixel-defining layer,

the particle unit is L-shaped, and

a cross-section of the pixel-defining layer is an upwardly protruding semi-circle surrounding two particle units at opposite corners.

2 . The display panel according to claim 1 , wherein orthographic projections of at least part of the particles on the substrate are staggered with the orthographic projection of the first electrode on the substrate.

3 . The display panel according to claim 1 , wherein distribution patterns of orthographic projections of the plurality of particles of particle units included in at least two of the first light-emitting devices are different from each other.

4 . The display panel according to claim 1 , wherein a difference between numbers of the particles included in at least two of the first light-emitting devices is greater than 0.

5 . The display panel according to claim 1 , wherein a ratio of a number of the particles included in the light-emitting device layer to a number of the first light-emitting devices is greater than or equal to 50.

6 . The display panel according to claim 1 , wherein an orthographic projection of the particle unit of the first light-emitting device on the substrate protrudes from an orthographic projection of the first electrode, which is surrounded by the particle unit, on the substrate.

7 . The display panel according to claim 6 , wherein a size of a part of the orthographic projection of the particle unit on the substrate protrudes from the orthographic projection of the first electrode, which is surrounded by the particle unit, on the substrate is from 1 μm to 5 μm.

8 . The display panel according to claim 1 , wherein the particles are high refractive light-pervious particles.

9 . The display panel according to claim 8 , wherein the high refractive light-pervious particles comprise zirconia particles.

10 . The display panel according to claim 1 , wherein the particles are light-impervious particles.

11 . The display panel according to claim 1 , wherein the particles comprise metal particles.

12 . The display panel according to claim 1 , wherein the particles comprise carbon particles.

13 . The display panel according to claim 1 , wherein a diameter value of the particle ranges from 0.1 μm to 1 μm.

14 . The display panel according to claim 1 , wherein particle units of two adjacent first light-emitting devices are arranged at intervals with each other.

15 . The display panel according to claim 1 , wherein the display panel further includes a second region surrounding at least part of the first region,

the light-emitting device layer further comprises a plurality of second light-emitting devices distributed in an array in the second region, and

wherein the second light-emitting device comprises a third electrode, a second light-emitting module located on the third electrode, and a fourth electrode located on the second light-emitting module.

16 . The display panel according to claim 15 , wherein the first light-emitting devices are distributed in an array of a first density in the first region, and the second light-emitting devices are distributed in an array of a second density in the second region.

17 . The display panel according to claim 16 , wherein the first density is equal to the second density.

18 . A display device comprising a display panel including a first region, wherein the display panel comprises:

a substrate;

a light-emitting device layer stacked on the substrate, wherein the light-emitting device layer comprises a pixel-defining layer disposed on the substrate and a plurality of first light-emitting devices distributed in an array in the first region, and wherein the first light-emitting device comprises:

a first electrode,

a particle unit disposed at least partially in a same layer with the first electrode and surrounding the first electrode,

a first light-emitting module located on the first electrode, and

a second electrode located on the first light-emitting module and the pixel-defining layer covers the particle unit;

wherein:

the particle unit comprises a glue layer and a plurality of particles distributed within the glue layer,

an orthographic projection of at least part of one particle of at least part of the particles on the substrate does not completely overlap with an orthographic projection of the first electrode on the substrate,

the thickness of the particle unit is less than the thickness of the pixel-defining layer,

the particle unit is L-shaped, and

a cross-section of the pixel-defining layer is an upwardly protruding semi-circle surrounding two particle units at opposite corners.

19 . The display panel according to claim 1 , wherein an orthographic projection of the glue layer on the substrate overlaps with the orthographic projection of the first electrode on the substrate.

20 . The display panel according to claim 1 , wherein two adjacent particle units of two adjacent light-emitting devices are located within a same pixel-defining layer.