Display substrate and manufacturing method therefor, and display apparatus

Patent metadata

Field	Value
Publication number	US-12563905-B2
Application number	US-202117920883-A
Country	US
Kind code	B2
Filing date	Sep 3, 2021
Priority date	Oct 30, 2020
Publication date	Feb 24, 2026
Grant date	Feb 24, 2026

Abstract

A display substrate has a display region that includes a functional device arrangement region. The functional device arrangement region includes a plurality of light-emitting regions and a light-transmissive region located at peripheries of the light-emitting regions. The display substrate includes a substrate, a plurality of first lenses disposed on the substrate, an encapsulation layer disposed on a side of the plurality of first lenses away from the substrate, and a plurality of second lenses disposed on a side of the encapsulation layer away from the substrate. The first lenses and the second lenses are located in the light-transmissive region. In a direction perpendicular to the substrate, a second lens in the second lenses is arranged opposite to a first lens in the first lenses; a focal point of the first lens substantially coincides with a focal point of the second lens that is arranged opposite to the first lens.

First claim

What is claimed is:

1 . A display substrate having a display region, wherein the display region includes a functional device arrangement region, the functional device arrangement region includes a plurality of light-emitting regions and a light-transmissive region located at peripheries of the plurality of light-emitting regions; the display substrate comprises:
a substrate; a plurality of first lenses disposed on the substrate, the plurality of first lenses being located in the light-transmissive region; an encapsulation layer disposed on a side of the plurality of first lenses away from the substrate; a plurality of second lenses disposed on a side of the encapsulation layer away from the substrate, wherein the plurality of second lenses are located in the light-transmissive region; in a direction perpendicular to the substrate, a second lens in the plurality of second lenses is arranged opposite to a first lens in the plurality of first lenses, and a focal point of the first lens substantially coincides with a focal point of the second lens that is arranged opposite to the first lens; a color filter layer disposed on the side of the encapsulation layer away from the substrate, wherein the color filter layer includes a plurality of photoresist units, and in the functional device arrangement region, an orthographic projection of a photoresist unit in the plurality of photoresist units on the substrate at least partially overlaps with a light-emitting region in the plurality of light-emitting regions; a black matrix disposed on the side of the encapsulation layer away from the substrate, wherein the black matrix is located between every two adjacent photoresist units; a portion of the black matrix located in the functional device arrangement region has a plurality of through holes therein, orthographic projections of the plurality of through holes on the substrate are located within the light-transmissive region, and orthographic projections of the first lens and the second lens that are arranged opposite to each other on the substrate both at least partially overlap with an orthographic projection of a through hole in the plurality of through holes on the substrate; and an optical adhesive layer covering both the color filter layer and the black matrix; wherein the plurality of second lenses are disposed on a side of the optical adhesive layer away from the substrate; or the second lens is disposed in the through hole in the black matrix.

2 . The display substrate according to claim 1 , wherein in a case where the second lens is disposed in the through hole in the black matrix,
a surface of the second lens proximate to the substrate is substantially flush with a surface of the black matrix proximate to the substrate; and with respect to the substrate, a highest point on a surface of the second lens away from the substrate is higher than a surface of the black matrix away from the substrate, or the highest point on the surface of the second lens away from the substrate is substantially flush with the surface of the black matrix away from the substrate.

3 . The display substrate according to claim 1 , further comprising:
a pixel defining layer disposed between the substrate and the encapsulation layer, wherein the pixel defining layer has a plurality of openings therein, and in the functional device arrangement region, an orthographic projection of an opening in the plurality of openings on the substrate at least partially overlaps with a light-emitting region in the plurality of light-emitting regions.

4 . The display substrate according to claim 3 , wherein the plurality of first lenses are disposed on a surface of the pixel defining layer away from the substrate, the plurality of first lenses and the pixel defining layer constitute a one-piece structure.

5 . The display substrate according to claim 3 , wherein the plurality of first lenses are disposed on a side of the pixel defining layer away from the substrate, and the plurality of first lenses are in direct contact with the pixel defining layer.

6 . The display substrate according to claim 3 , further comprising:
a pixel driving circuit layer disposed between the substrate and the pixel defining layer, wherein the plurality of first lenses are disposed between the substrate and the pixel driving circuit layer.

7 . The display substrate according to claim 1 , wherein a surface of the first lens away from the substrate is a curved surface, and the curved surface of the first lens is convex in a direction away from the substrate; and/or
a surface of the second lens away from the substrate is a curved surface, and the curved surface of the second lens is convex in the direction away from the substrate.

8 . The display substrate according to claim 1 , wherein the first lens is a convex lens; and/or
the second lens is another convex lens.

9 . The display substrate according to claim 7 , wherein in the direction perpendicular to the substrate, a maximum thickness of the first lens is in a range of 2 μm to 15 μm, inclusive; and/or
in the direction perpendicular to the substrate, a maximum thickness of the second lens is in a range of 2 μm to 15 μm, inclusive.

10 . The display substrate according to claim 1 , further comprising:
a cathode layer disposed between the substrate and the encapsulation layer, wherein the cathode layer covers the display region of the display substrate; or orthographic projections of portions of the cathode layer located in the functional device arrangement region on the substrate do not overlap with the light-transmissive region.

11 . The display substrate according to claim 1 , further comprising:
a plurality of film layers disposed between the plurality of first lenses and the plurality of second lenses, wherein a refractive index of each film in the plurality of film layers is less than a refractive index of the first lens, and less than a refractive index of the second lens.

12 . The display substrate according to claim 1 , wherein in the direction perpendicular to the substrate, a distance between the first lens and the second lens that are arranged opposite to each other is in a range of 6 μm to 20 μm, inclusive.

13 . A display apparatus, comprising the display substrate according to claim 1 , and at least one camera located on a non-display side of the display substrate.

14 . A manufacturing method for a display substrate, wherein the display substrate has a display region, the display region includes a functional device arrangement region; the functional device arrangement region includes a plurality of light-emitting regions that are non-light-transmissive, and a light-transmissive region located at peripheries of the plurality of light-emitting regions; the manufacturing method comprises:
forming a plurality of first lenses on a substrate, the plurality of first lenses being located in the light-transmissive region; forming an encapsulation layer on a side of the plurality of the first lenses away from the substrate; and forming a plurality of second lenses on a side of the encapsulation layer away from the substrate, wherein the plurality of second lenses are located in the light-transmissive region; in a direction perpendicular to the substrate, a second lens in the plurality of second lenses is arranged opposite to a first lens in the plurality of first lenses, and a focal point of the first lens substantially coincides with a focal point of the second lens that is arranged opposite to the first lens; and the manufacturing method further comprises: forming a color filter layer and a black matri

Assignees

• Beijing Boe Display Tech Co
• Boe Technology Group Co Ltd

Inventors

• Xu Chuanxiang
• Shu Shi
• Yao Qi
• Huang Haitao
• Yue Yang
• Li Xiang
• Gu Renquan

Classifications

• H10K59/65

  OLEDs integrated with inorganic image sensors · CPC title

• H10K59/8792

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

• H10K59/38

  comprising colour filters or colour changing media [CCM] · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K59/8722

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title