IP Library › Granted Patent US 12,429,765
Granted Patent B2
US 12,429,765 · App. 18/170,563 · Granted Sep 30, 2025

Anti-glare layer and manufacturing method thereof

Inventor: Chien-Hsing Chang (Hsinchu, TW)
Assignee: E Ink Holdings Inc.
G03F7/0005G02B1/11
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Quick Facts
Patent No.
US 12,429,765
App. No.
18/170,563
Granted
Sep 30, 2025
Kind
B2
Abstract

An anti-glare layer and a manufacturing method thereof are provided. The manufacturing method of the anti-glare layer includes providing a substrate, coating an anti-glare material layer on the substrate, and performing a photolithography process on the anti-glare material layer through a gray-scale mask to form the anti-glare layer. The anti-glare layer includes multiple protrusion portions with different heights.

Claims (24)

1. A manufacturing method of an anti-glare layer, comprising:

providing a substrate;

coating an anti-glare material layer on the substrate; and

performing a single photolithography process on the anti-glare material layer through a gray-scale mask to form the anti-glare layer, wherein the anti-glare layer comprises a plurality of protrusion portions with different heights.

2. The manufacturing method of the anti-glare layer according to claim 1 , wherein by the single photolithography process, a continuous portion of the anti-glare layer is further formed, and the continuous portion extends continuously between the protrusion portions.

3. The manufacturing method of the anti-glare layer according to claim 1 , wherein by the single photolithography process, the protrusion portions of the anti-glare layer are further separated.

4. The manufacturing method of the anti-glare layer according to claim 1 , wherein by the single photolithography process, the anti-glare layer is further formed to have surface roughness between 0.5 μm and 2 μm.

5. The manufacturing method of the anti-glare layer according to claim 1 , wherein by the single photolithography process, adjacent protrusion portions of the plurality of protrusion portions of the anti-glare layer are further separated by a distance less than 1 mm.

6. The manufacturing method of the anti-glare layer according to claim 1 , wherein by the single photolithography process, the protrusion portions of the anti-glare layer are further formed to have a height between 0.1 μm and 10 μm or an aspect ratio between 0 and 1.

7. The manufacturing method of the anti-glare layer according to claim 1 , wherein a material of the protrusion portions comprises a photosensitive resin.

8. The manufacturing method of the anti-glare layer according to claim 1 , wherein by the single photolithography process, the protrusion portions of the anti-glare layer are further formed to have a cross-sectional shape comprising a rectangle or a trapezoid.

9. The manufacturing method of the anti-glare layer according to claim 1 , wherein the gray-scale mask comprises at least four areas with different light transmittances.

10. The manufacturing method of the anti-glare layer according to claim 9 , wherein by the single photolithography process, the protrusion portions of the anti-glare layer are further formed to comprise at least four different heights respectively corresponding to the at least four areas with different light transmittances of the gray-scale mask.

11. The manufacturing method of the anti-glare layer according to claim 1 , further comprising disposing the anti-glare layer on an external surface of an electronic device, wherein the protrusion portions protrude outward.

12. An anti-glare layer, comprising:

a substrate; and

a plurality of protrusion portions disposed on the substrate, wherein the protrusion portions are manufactured by a photolithography process, and a separation distance of adjacent protrusion portions of the plurality of protrusion portions is less than 1 mm,

wherein a surface roughness of the anti-glare layer is between 0.5 μm and 2 μm.

13. The anti-glare layer according to claim 12 , further comprising:

a continuous portion disposed on the substrate and extending continuously between the protrusion portions.

14. The anti-glare layer according to claim 12 , wherein the protrusion portions have at least four different heights.

15. The anti-glare layer according to claim 12 , wherein a height of the protrusion portions is between 0.1 μm and 10 μm, or an aspect ratio is between 0 and 1.

16. The anti-glare layer according to claim 12 , wherein a material of the protrusion portions comprises a photosensitive resin.

17. The anti-glare layer according to claim 12 , wherein the protrusion portions have a cross-sectional shape comprising a rectangle or a trapezoid.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 20, 2023
From: CHANG, CHIEN-HSING
To: E INK HOLDINGS INC.
Reel/Frame 062739/0350 →
Priority Claims (1)
TW 111116365 · Apr 29, 2022 · national
Continuity (1)
Related Publication 20230350288A1 · Nov 2, 2023
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