DISPLAY MODULE AND MANUFACTURING METHOD

• US 20200133059A1
• Filed: 11/21/2017
• Published: 04/30/2020
• Est. Priority Date: 10/31/2017
• Status: Active Grant

• Current Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: YANG, Yong
• Granted Patent: US 10,761,365 B2
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133331 Cover glasses
• CPC Class Codes: G02F 1/133502 Antiglare, refractive index matching layers
• CPC Class Codes: G02F 1/133528 Polarisers

Abstract

The present invention provides a display module which comprises a display panel, a cover, and an upper polarizer. The upper polarizer is attached to a light emitting surface. The cover is disposed on the upper polarizer, and a first microstructure has a curved concave surface is on the cover. A second microstructure having curved convex surface is on the upper polarizer and faces to the cover, and the first microstructure is corresponding to the second microstructure. The present invention also provides a manufacturing of display module. In the present invention, the cover of the display module and the surface of the upper polarizer are subjected to a special anti-glare surface treatment so that the microstructure on the surface of the cover and the microstructure of the surface of the upper polarizer form a substantially complementary relationship to achieve better anti-glare effect.

Claims

1. A display module, comprising:

a display panel, a cover, and an upper polarizer, wherein the upper polarizer is attached to an light emitting surface, the cover is disposed on the upper polarizer, a first microstructure having a curved concave surface is on the cover, a second microstructure having curved convex surface is on the upper polarizer and faces to the cover, and the first microstructure is corresponding to the second microstructure,

2. The display module according to claim 1, wherein the first microstructure has the same curvature radius as the second microstructure.

3. The display module according to claim 1, further comprising a third microstructure having a curved concave arranged on an inner surface of the cover, wherein each of the first microstructure is corresponding to either the second microstructure or the third microstructure.

4. The display module according to claim 3, wherein the first microstructure has the same curvature radius as the second microstructure.

5. The display module according to claim 3, wherein a projection image of each of the third microstructure on the upper polarizer is between the second microstructure.

6. The display module according to claim 5, wherein the first microstructure has the same curvature radius as the second microstructure.

7. The display module according to claim 3, wherein the third microstructure has the same curvature radius as the second microstructure.

8. The display module according to claim 7, wherein the first microstructure has the same curvature radius as the second microstructure.

9. A display module, comprising a display panel, and a cover, wherein the cover is arranged above a light emitting direction of the display panel, a first microstructure having a curved concave is on an outer surface of the cover, a third microstructure having a curved concave surface on an inner surface of the cover, and the third microstructure is corresponding to the first microstructure.

10. The display module according to claim 9, wherein the amount of the first microstructure is the same as the third microstructure, and the location of each of the first microstructure is corresponding to the third microstructure.

11. The display module according to claim 10, wherein the first microstructure has the same curvature radius as the third microstructure.

12. A manufacturing method of a display module, comprising:

preparing a cover, comprising;

depositing a first hard mask layer on a transparent plate by vapor deposition;

etching the transparent plate to form a first microstructure having a curved concave on a region of the transparent plate which is not covered by the first hard mask; and

removing the first hard mask;

preparing an upper polarizer, comprising;

depositing a second hard mask on an upper surface of the upper polarizer by vapor deposition; and

spraying particles on the upper polarizer with the second hard mask;

attaching the upper polarizer and the cover to a light emitting surface of a display panel, wherein the upper polarizer is located between the display panel and the cover.

13. The manufacturing method according to claim 12, wherein the cover is attached to the upper polarizer with an optical glue layer.

14. The manufacturing method according to claim 12, wherein the thickness of the first hard mask is 100 nm-500 nm.

15. The manufacturing method according to claim 14, wherein the curvature radius of the first microstructure is 10 μ

m-50 μ

m.

16. The manufacturing method according to claim 13, wherein the particles in the step of spraying particles on the upper surface and the upper polarizer is the inorganic particle mixed in the organic solvent.

17. The manufacturing method according to claim 16, wherein the curvature radius of the particles is 10 μ

m-50 μ

m and the reflective index of the particles is 1.5 times of the optical glue layer.