Display device and display panel

Patent metadata

Field	Value
Publication number	US-12560839-B2
Application number	US-202318702788-A
Country	US
Kind code	B2
Filing date	Mar 29, 2023
Priority date	Mar 29, 2023
Publication date	Feb 24, 2026
Grant date	Feb 24, 2026

Abstract

A display device and a display panel are provided. The display device includes a base substrate, at least one light-emitting unit on the base substrate, an encapsulation layer covering the at least one light-emitting unit, and at least one lens on a side of the encapsulation layer away from the base substrate. The light-emitting unit has a first electrode, a second electrode, and a light-emitting layer located between the first electrode and the second electrode. The first electrode is located between the light-emitting layer and the base substrate. The at least one lens corresponds one-to-one with the at least one light-emitting unit. The lens has a first part and a second part surrounding the first part. An outer surface of the first part has a first curvature, an outer surface of the second part has a second curvature, and the first curvature is less than the second curvature.

First claim

What is claimed is:

1 . A display device, comprising:
a base substrate; at least one light-emitting unit on the base substrate, wherein the light-emitting unit has a first electrode, a second electrode, and a light-emitting layer located between the first electrode and the second electrode, and the first electrode is located between the light-emitting layer and the base substrate; an encapsulation layer covering the at least one light-emitting unit; and at least one lens on a side of the encapsulation layer away from the base substrate, wherein the at least one lens corresponds one-to-one with the at least one light-emitting unit, wherein the lens has a first part and a second part surrounding the first part, an outer surface of the first part has a first curvature, an outer surface of the second part has a second curvature, and the first curvature is less than the second curvature; and wherein the display device further comprises:
a color film layer between the encapsulation layer and the at least one lens;
a first planarization layer between the encapsulation layer and the color film layer; and
a second planarization layer between the color film layer and the at least one lens.

2 . The display device according to claim 1 , wherein a projection of the first part of the lens on the base substrate is located within a projection of a bottom surface of the lens on the base substrate, and a projection of the second part of the lens on the base substrate is located outside the projection of the bottom surface of the lens on the base substrate.

3 . The display device according to claim 1 , wherein the lens has a first dimension in a direction parallel to the base substrate and a second dimension in a direction perpendicular to the base substrate, and a ratio of the first dimension to the second dimension is within a range of 1.5 to 2.

4 . The display device according to claim 1 , wherein a surface inclination of the first part of the lens is within a range of 25 degrees to 35 degrees, and a surface inclination of the second part of the lens is within a range of 85 degrees to 95 degrees, so that the first curvature is less than the second curvature, and
wherein the surface inclination of the first part is an angle of a surface tangent of the first part at a half height of the first part in a direction perpendicular to the base substrate relative to a first direction, the surface inclination of the second part is an angle of a surface tangent of the second part at a half height of the second part in the direction perpendicular to the base substrate relative to the first direction, and the first direction is parallel to the base substrate.

5 . The display device according to claim 1 , wherein at a position where the second part of the lens is in contact with the second planarization layer, an angle between the outer surface of the second part and an outer surface of the second planarization layer is within a range of 43 degrees to 47 degrees.

6 . The display device according to claim 1 , wherein a surface of the second planarization layer covered by the lens is higher than a surface of the second planarization layer not covered by the lens in a direction perpendicular to the base substrate and away from the base substrate, so that a bump is formed in a region in which the second planarization layer is not covered by the lens.

7 . The display device according to claim 6 , wherein the lens has a first projection on the base substrate, a bottom surface of the lens has a second projection on the base substrate, and a distance between an outer edge of the first projection and an outer edge of the second projection is greater than a height of the bump.

8 . The display device according to claim 1 , wherein the display device comprises a plurality of light-emitting units and a plurality of lenses corresponding one-to-one with the plurality of light-emitting units, and a minimum distance between adjacent lenses is less than a minimum distance between outer edges of bottom surfaces of the adjacent lenses.

9 . The display device according to claim 8 , wherein
the color film layer comprises a first color film, a second color film, and a third color film; the plurality of light-emitting units comprise a first light-emitting unit located on a side of the first color film facing the base substrate, a second light-emitting unit located on a side of the second color film facing the base substrate, and a third light-emitting unit located on a side of the third color film facing the base substrate; the plurality of lenses comprise a first lens located on a side of the first color film away from the base substrate, a second lens located on a side of the second color film away from the base substrate, and a third lens located on a side of the third color film away from the base substrate; the first color film is formed after forming the second color film and the third color film, and the first color film is adjacent to one of the second color film and the third color film and covers a part of the one of the second color film and the third color film; and a minimum distance between the first lens and one of the second lens and the third lens adjacent to the first lens is less than a minimum distance between adjacent second and third lenses.

10 . The display device according to claim 9 , wherein the minimum distance between the first lens and one of the second lens or the third lens adjacent to the first lens is within a range of 535 nm to 545 nm, and the minimum distance between adjacent second and third lenses is within a range of 545 nm to 555 nm.

11 . The display device according to claim 9 ,
wherein the first color film is adjacent to the second color film and covers a part of the second color film, and the third color film is adjacent to the second color film and covers a part of the second color film; and wherein a thickness of a first overlapping part in a direction perpendicular to the base substrate is greater than a thickness of a second overlapping part in the direction perpendicular to the base substrate, the first overlapping part is a part of the first color film that covers the second color film, and the second overlapping part is a part of the third color film that covers the second color film.

12 . The display device according to claim 11 ,
wherein each lens of the at least one lens has a first projection on the base substrate, and a bottom surface of each lens has a second projection on the base substrate; and wherein a distance between an outer edge of the first projection and an outer edge of the second projection of each lens is less than the thickness of the first overlapping part of the first color film in the direction perpendicular to the base substrate.

13 . The display device according to claim 12 , wherein the distance between outer edges of the first projection and the second projection of the first lens is greater than the distance between outer edges of the first projection and the second projection of each of the second lens and the third lens.

14 . The display device according to claim 12 , wherein a surface inclination of the first part of the first lens is less than a surface inclination of the first part of one of the second lens or the third lens, and the surface inclination of the first part is an angle of a surface tangent of the first part at a half height of the first part in a direction perpendicular to the base substrate relative to a first direction.

15 . The display device according to claim 11 , wherein a first bump is formed in a region of the second planari

Assignees

• Yunnan Invensight Optoelectronics Technology Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Yang Zongshun
• Shan Qingshan
• Yang Chao
• Bu Weiliang
• Zhang Dacheng
• Yuan Haojie
• Wu Shuanghong
• Wang Han

Classifications

• G02F1/133621 Primary

  providing coloured light (G02F1/133617, G02F1/133533 take precedence) · CPC title

• G02F1/133612

  Electrical details · CPC title

• G02F1/133607 Primary

  the light controlling member including light directing or refracting elements, e.g. prisms or lenses · CPC title

• H10K50/858 Primary

  comprising refractive means, e.g. lenses · CPC title