Display module and manufacturing method

• US 10,761,365 B2
• Filed: 11/21/2017
• Issued: 09/01/2020
• 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
• Primary Examiner(s): Liu, Shan
• Application Number:
  US15/578,691
• Publication Number:
  US 20200133059A1
• Time in Patent Office: 1,015 Days
• Field of Search: 349 96-105
• 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 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.

2. The manufacturing method according to claim 1, wherein the cover is attached to the upper polarizer with an optical glue layer.

3. The manufacturing method according to claim 2, 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.

4. The manufacturing method according to claim 3, 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.

5. The manufacturing method according to claim 1, wherein the thickness of the first hard mask is 100 nm-500 nm.

6. The manufacturing method according to claim 5, wherein the curvature radius of the first microstructure is 10 μ

m-50 μ

m.