Optical module, manufacturing method, and display device

Patent metadata

Field	Value
Publication number	US-12034088-B2
Application number	US-202117635794-A
Country	US
Kind code	B2
Filing date	Apr 26, 2021
Priority date	Apr 26, 2021
Publication date	Jul 9, 2024
Grant date	Jul 9, 2024

Abstract

The present disclosure belongs to the field of display technology, and provides an optical module, a manufacturing method thereof, and a display device. The optical module includes: a substrate; a barrier structure arranged on the substrate; a black matrix arranged within the barrier structure, an orthogonal projection of the black matrix onto the substrate not going beyond a region surrounded by the barrier structure; and optical lenses arranged on a side of the black matrix away from the substrate. An orthogonal projection of a gap between adjacent optical lenses onto the substrate falls into the black matrix.

First claim

What is claimed is:

1. An optical module, comprising:
a substrate;
a barrier structure arranged on the substrate; a black matrix arranged within the barrier structure, an orthogonal projection of the black matrix onto the substrate not going beyond a region surrounded by the barrier structure; and
optical lenses arranged on a side of the black matrix away from the substrate,
wherein an orthogonal projection of a gap between adjacent optical lenses onto the substrate falls into the black matrix;
wherein an orthogonal projection of the black matrix onto the barrier structure does not go beyond a region surrounded by the barrier structure.

2. The optical module of claim 1 , wherein the barrier structure is a bank arranged on the substrate and surrounding the black matrix.

3. The optical module according to claim 2 , wherein a thickness of the bank is greater than or equal to a thickness of the black matrix.

4. The optical module according to claim 1 , wherein the barrier structure is a groove penetrating through a part of the substrate, and the black matrix is located within the groove.

5. The optical module according to claim 1 , wherein the optical module further comprises a transparent material layer arranged on a surface of the substrate, and the barrier structure is a groove penetrating through at least a part of the transparent material layer.

6. The optical module according to claim 4 , wherein a thickness of the black matrix is less than or equal to a depth of the groove.

7. A display device, comprising the optical module according to claim 1 .

8. The display device according to claim 7 , further comprising a display panel arranged opposite to the optical module to form a cell, wherein sub-pixels of the display panel correspond to the optical lenses respectively, and an orthogonal projection of a center point of each sub-pixel onto the substrate coincides with an orthogonal projection of a center point of a corresponding optical lens onto the substrate.

9. The display device according to claim 7 , wherein the optical lenses are arranged on a side of the substrate away from the display panel.

10. The display device according to claim 7 , wherein the optical lenses are arranged on a side of the substrate facing the display panel, a layer having a low refractive index is filled between the substrate and the display panel, a thickness of the layer is greater than a thickness of the optical lens, and the refractive index of the layer is less than a refractive index of the optical lens.

11. The optical module according to claim 4 , wherein a thickness of the black matrix is less than or equal to a depth of the groove.

12. A method for manufacturing an optical module, comprising:
providing a substrate;
forming a barrier structure on the substrate;
forming a black matrix within the barrier structure, an orthogonal projection of the black matrix onto the substrate not going beyond a region surrounded by the barrier structure; and
forming optical lenses through heat reflux,
wherein an orthogonal projection of a gap between adjacent optical lenses onto the substrate falls within the black matrix;
wherein an orthogonal projection of the black matrix onto the barrier structure does not go beyond a region surrounded by the barrier structure.

13. The method according to claim 12 , wherein the forming the barrier structure comprises:
forming a transparent material layer on the substrate; and
forming a bank using the transparent material layer through imprinting or photoetching to surround the black matrix.

14. The method according to claim 12 , wherein the barrier structure is a groove penetrating through a part of the substrate, and the forming the barrier structure comprises etching a surface of the substrate to form the groove penetrating through a part of the substrate.

15. The method according to claim 12 , wherein the forming the barrier structure comprises:
forming a transparent material layer on the substrate; and
etching the transparent material layer to form a groove penetrating through at least a part of the transparent material layer as the barrier structure.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Li Duohui
• Guo Kang
• Song Mengya
• Huang Haitao
• Gu Renquan
• Zhang Feng
• Wang Meili

Classifications

• H10F77/413

  directly associated or integrated with the devices, e.g. back reflectors (directly associated or integrated with photovoltaic cells H10F77/42) · CPC title

• H10F77/334 Primary

  for shielding light, e.g. light blocking layers or cold shields for infrared detectors · CPC title

• G02F1/133512

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F1/133526

  Lenses, e.g. microlenses or Fresnel lenses · CPC title

• G02F1/133509

  Filters, e.g. light shielding masks · CPC title