Projection screen and manufacturing method of projection screen

Patent metadata

Field	Value
Publication number	US-2016004150-A1
Application number	US-201414574371-A
Country	US
Kind code	A1
Filing date	Dec 17, 2014
Priority date	Jul 4, 2014
Publication date	Jan 7, 2016
Grant date	—

Abstract

A projection screen includes a flexible substrate, a reflective layer and a transparent coating layer. The flexible substrate has a first surface and a second surface opposite to each other. The reflective layer is disposed on the first surface of the flexible substrate. The transparent coating layer is coated on the reflective layer, and the transparent coating layer has a pattern on a surface opposite to the reflective layer. Moreover, a manufacturing method of the projection screen is also provided.

First claim

1 . A projection screen, comprising:
a flexible substrate, having a first surface and a second surface opposite to each other; a reflective layer, disposed on the first surface of the flexible substrate; and a transparent coating layer, coated on the reflective layer, and the transparent coating layer having a pattern on a surface opposite to the reflective layer.

2 . The projection screen as claimed in claim 1 , wherein the reflective layer comprises a plurality of optical microstructures on a surface facing the transparent coating layer.

3 . The projection screen as claimed in claim 2 , wherein the optical microstructures are granular.

4 . The projection screen as claimed in claim 2 , wherein the optical microstructures are prismatic structures.

5 . The projection screen as claimed in claim 4 , wherein each of the optical microstructures has a vertex angle, and the vertex angles are the same degree.

6 . The projection screen as claimed in claim 4 , wherein each of the optical microstructures has a vertex angle, and at least parts of the vertex angles of the optical microstructures are different.

7 . The projection screen as claimed in claim 1 , wherein a surface of the reflective layer facing the transparent coating layer is a plane.

8 . The projection screen as claimed in claim 1 , wherein a thickness of the reflective layer is greater than or equal to 20 μm.

9 . The projection screen as claimed in claim 1 , wherein a thickness of the transparent coating layer is smaller than or equal to 2 μm.

10 . The projection screen as claimed in claim 1 , wherein a surface roughness of the surface of the transparent coating layer opposite to the reflective layer ranges from 3 μm to 3.5 μm.

11 . The projection screen as claimed in claim 1 , further comprising:
a bonding layer, located on the second surface of the flexible substrate; and a release layer, wherein the bonding layer is located between the release layer and the flexible substrate.

12 . A manufacturing method of a projection screen, comprising:
providing a flexible substrate, wherein the flexible substrate has a first surface and a second surface opposite to each other; forming a reflective layer on the first surface of the flexible substrate; and forming a transparent coating layer on the reflective layer, wherein the transparent coating layer has a pattern on a surface opposite to the reflective layer.

13 . The manufacturing method of the projection screen as claimed in claim 12 , wherein the step of forming the reflective layer comprises:
coating a first adhesive layer on the flexible substrate; and performing transfer printing on the first adhesive layer by using a first transfer printing roller, and performing a light curing process on the first adhesive layer to form the reflective layer.

14 . The manufacturing method of the projection screen as claimed in claim 13 , wherein the first transfer printing roller has a plurality of transfer printing microstructures, so as to form a plurality of optical microstructures on the first adhesive layer.

15 . The manufacturing method of the projection screen as claimed in claim 14 , wherein the optical microstructures are granular.

16 . The manufacturing method of the projection screen as claimed in claim 14 , wherein the optical microstructures are prismatic structures.

17 . The manufacturing method of the projection screen as claimed in claim 16 , wherein each of the optical microstructures has a vertex angle, and the vertex angles are the same degree.

18 . The manufacturing method of the projection screen as claimed in claim 16 , wherein each of the optical microstructures has a vertex angle, and at least parts of the vertex angles of the optical microstructures are different.

19 . The manufacturing method of the projection screen as claimed in claim 12 , wherein the step of forming the transparent coating layer comprises:
coating a second adhesive layer on the reflective layer; and performing transfer printing on the second adhesive layer by using a second transfer printing roller, and performing a light curing process on the second adhesive layer to form the pattern.

20 . The manufacturing method of the projection screen as claimed in claim 12 , wherein a thickness of the reflective layer is greater than or equal to 20 μm.

21 . The manufacturing method of the projection screen as claimed in claim 12 , wherein a thickness of the transparent coating layer is smaller than or equal to 20 μm.

22 . The manufacturing method of the projection screen as claimed in claim 12 , wherein a surface roughness of the surface of the transparent coating layer opposite to the reflective layer ranges from 3 μm to 3.5 μm.

23 . The manufacturing method of the projection screen as claimed in claim 12 , further comprising:
coating a bonding layer on the second surface of the flexible substrate after the transparent coating layer is formed; and configuring a release layer, wherein the bonding layer is located between the release layer and the flexible substrate.

Assignees

• Su Fang-Hsuan
• Chung Chia-Chi
• Chen kai-li
• Coretronic Corp

Inventors

• Su Fang-Hsuan
• Chung Chia-Chi
• Chen kai-li

Classifications

• G03B21/56

  Projection screens · CPC title

• G03B21/58

  collapsible, e.g. foldable; of variable area · CPC title

• G03B21/60 Primary

  characterised by the nature of the surface · CPC title