Display device and display apparatus

Patent metadata

Field	Value
Publication number	US-12592186-B2
Application number	US-202318251237-A
Country	US
Kind code	B2
Filing date	Apr 21, 2023
Priority date	Mar 28, 2023
Publication date	Mar 31, 2026
Grant date	Mar 31, 2026

Abstract

A display device and a display apparatus are provided by the present disclosure. A curved portion of the cover plate of the display device includes a first point, when a first virtual normal line perpendicular to a surface of the curved portion where the first point is located extends toward a display area, the first virtual normal line does not intersect with the light-shielding portion adjacent to the first point and intersects with the display area. Therefore, a non-display area is capable of having a same forward light output as the display area, allowing users to experience a narrower border or even borderless visual experience when viewing the display device.

First claim

What is claimed is:

1 . A display device, comprising a display area and a non-display area disposed on at least one side of the display area, wherein the display device further comprises:
a substrate; a light-emitting layer disposed on a side of the substrate, the light-emitting layer comprising a plurality of light-emitting pixels corresponding to the display area; a light-shielding layer disposed on a side of the light-emitting layer away from the substrate, the light-shielding layer comprising a light-shielding portion at least corresponding to the non-display area; and a cover plate disposed on a side of the light-shielding layer away from the substrate, the cover plate comprising a curved portion at least corresponding to the non-display area; wherein a surface of the curved portion comprises a first point, when a first virtual normal line defined as perpendicular to a surface of the curved portion where the first point is located extends toward the display area, the first virtual normal line does not intersect with the light-shielding portion adjacent to the first point and intersects with the display area; an orthographic projection of the curved portion onto the light-shielding layer is contained within the light-shielding portion in the light-shielding layer.

2 . The display device of claim 1 , wherein the surface of the curved portion further comprises a second point, when a second virtual normal line defined as perpendicular to a surface of a curved portion where the second point is located extends toward the display area, the second virtual normal line does not intersect intersects with the light-shielding portion adjacent to the second point, and the first point is closer to the display area compared to the second point.

3 . The display device of claim 2 , wherein the curved portion corresponding to the first point is provided with a first curvature radius, the curved portion corresponding to the second point is provided with a second curvature radius, and the first curvature radius is smaller than the second curvature radius.

4 . The display device of claim 3 , wherein a first distance is defined from the first point to an adjacent boundary of the display area, a second distance is defined from a boundary of the curved portion where the first point is located and away from the display area to the adjacent boundary of the display area, and a ratio between the first distance and the second distance ranges from one-third to one-half.

5 . The display device of claim 1 , wherein the surface of the curved portion further comprises a third point, when a third virtual normal line defined as perpendicular to a surface of a curved portion where the third point is located extends toward the display area, the third virtual normal line intersects with a boundary of the light-shielding portion adjacent to the third point and close to the display area, and intersects with the display area; and
the first point is closer to the display area compared to the third point.

6 . The display device of claim 1 , wherein the display device further comprises an adhesive layer which is disposed between the light-emitting layer and the cover plate, a refractive index of the adhesive layer is lower than a refractive index of the cover plate, and the refractive index of the cover plate ranges from 1.5 to 2.

7 . The display device of claim 1 , wherein the curved portion comprises a first portion close to the display area and a second portion away from the display area, a boundary between the first portion and the second portion passes through the first point and is parallel to a boundary of the curved portion close to the display area, and a ratio of a surface area of the first portion to a surface area of the curved portion ranges from one-third to one-half.

8 . The display device of claim 1 , wherein a cross-sectional shape of the cover plate comprises a trapezoidal shape.

9 . A display apparatus comprising a display device and an electronic component, the display device comprising a display area and a non-display area disposed on at least one side of the display area, wherein the display device comprises:
a substrate; a light-emitting layer disposed on a side of the substrate, the light-emitting layer comprising a plurality of light-emitting pixels corresponding to the display area; a light-shielding layer disposed on a side of the light-emitting layer away from the substrate, the light-shielding layer comprising a light-shielding portion at least corresponding to the non-display area; and a cover plate disposed on a side of the light-shielding layer away from the substrate, the cover plate comprising a curved portion at least corresponding to the non-display area; wherein, a surface of the curved portion comprises a first point, when a first virtual normal line defined as perpendicular to a surface of a curved portion where the first point is located extends toward the display area, the first virtual normal line does not intersect with the light-shielding portion adjacent to the first point and intersects with the display area; an orthographic projection of the curved portion onto the light-shielding layer is contained within the light-shielding portion in the light-shielding layer; wherein the surface of the curved portion comprises a second point, when a second virtual normal line defined as perpendicular to a surface of a curved portion where the second point is located extends toward the display area, the second virtual normal line intersects with the light-shielding portion adjacent to the second point, and the first point is closer to the display area compared to the second point; wherein the curved portion corresponding to the first point is provided with a first curvature radius, the curved portion corresponding to the second point is provided with a second curvature radius, and the first curvature radius is less than the second curvature radius; wherein a first distance is defined from the first point to an adjacent boundary of the display area, a second distance is defined from a boundary of the curved portion where the first point is located at and away from the display area to the adjacent boundary of the display area, and a ratio between the first distance and the second distance ranges from one-third to one-half.

10 . The display apparatus of claim 9 , wherein the surface of the curved portion comprises a third point, when a third virtual normal line defined as perpendicular to a surface of a curved portion where the third point is located extends toward the display area, the third virtual normal line intersects with a boundary of the light-shielding portion adjacent to the third point and close to the display area, and intersects with the display area; and
the first point is closer to the display area compared to the third point.

11 . The display apparatus of claim 9 , wherein a side of the cover plate away from the display area comprises a right angle portion and a corner cutting portion, the corner cutting portion is disposed between the curved portion and the light-emitting layer, the right angle portion is disposed between the corner cutting portion and the curved portion, one boundary of the corner cutting portion is aligned with a boundary of the light-shielding portion away from the display area, another boundary of the corner cutting portion is aligned with a boundary of the right angle portion, and the boundary of the right angle portion is aligned with a boundary of the curved portion away from the display area.

12 . The display apparatus of claim 11 , wherein a thickness of the curved portion is greater than a thickness of the right angle p

Assignees

• Wuhan China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• Chen Qi

Classifications

• G09G3/03

  specially adapted for displays having non-planar surfaces, e.g. curved displays · CPC title

• H10K59/879

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

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K77/10

  Substrates, e.g. flexible substrates · CPC title

• G09G3/3208 Primary

  organic, e.g. using organic light-emitting diodes [OLED] · CPC title