Method for fabricating window member

Patent metadata

Field	Value
Publication number	US-9862173-B2
Application number	US-201514592109-A
Country	US
Kind code	B2
Filing date	Jan 8, 2015
Priority date	Jan 22, 2014
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

A method for fabricating window member may include preparing a transparent polymer film, disposing a light curable adhesive layer on a surface of the transparent polymer film, disposing a transparent substrate on the light curable adhesive layer, the transparent substrate including a transmitting region and a non-transmitting region, and curing the light curable adhesive layer by light irradiation. The light curable adhesive layer may include a transparent adhesive. A storage modulus of the transparent adhesive may be greater than or equal to about 10 3 Pa to less than about 10 6 Pa at room temperature before curing, and greater than or equal to about 10 6 Pa at room temperature after curing.

First claim

What is claimed is:

1. A method for fabricating window member, the method comprising:
preparing a transparent polymer film, the transparent polymer film including a transmitting region and a non-transmitting region;
disposing a light curable material layer on another surface of the transparent polymer film;
disposing a plurality of micro patterns on the light curable material layer in the non-transmitting region;
curing the light curable material layer by light irradiation;
disposing a deposition layer including a plurality of layers having different refraction indices on the light curable material layer;
removing the light curable material layer in the transmitting region;
disposing a light blocking layer on the deposition layer in the non-transmitting region;
disposing a light curable adhesive layer on a surface of the transparent polymer film;
disposing a transparent substrate on the light curable adhesive layer; and
curing the light curable adhesive layer by light irradiation,
wherein the light curable adhesive layer includes a transparent adhesive, a storage modulus of the transparent adhesive is greater than or equal to about 10 3 Pa to less than about 10 6 Pa at room temperature before curing, and greater than or equal to about 10 6 Pa at room temperature after curing.

2. The method as claimed in claim 1 , wherein the storage modulus of the transparent adhesive is greater than or equal to about 10 7 Pa at room temperature after curing.

3. The method as claimed in claim 1 , wherein disposing the deposition layer includes:
disposing a first layer transmitting light on the light curable material layer; and
disposing a second layer having a refraction index less than a refraction index of the first layer on the first layer.

4. The method as claimed in claim 3 , further comprising:
laminating a light-transmittable release film on the light curable adhesive layer before disposing the deposition layer;
curing edge of the light curable adhesive layer;
forming an outline of the window member; and
removing the light-transmittable release film.

5. The method as claimed in claim 1 , wherein the transparent adhesive includes an acrylic copolymer composed of solution polymerizable acrylic compounds and reactive initiators, and UV curable compounds.

6. The method as claimed in claim 5 , wherein the solution polymerizable acrylic compounds include at least one of acrylic acid, 2-ethylhexyl acrylate, 2-methylbutyl acrylate, isooctyl acrylate, lauryl acrylate, ethyl acrylate, butyl acrylate, hexyl acrylate, octyl acrylate, decyl acrylate, and isodecyl acrylate.

7. The method as claimed in claim 6 , wherein the solution polymerizable acrylic compounds include from about 30 percent by weight to about 60 percent by weight of butyl acrylate, from about 30 percent by weight to about 60 percent by weight of 2-ethylhexyl acrylate, and from about 0.1 percent by weight to about 40 percent by weight of acrylic acid based on the total weight of the solution polymerizable acrylic compounds.

8. The method as claimed in claim 5 , wherein the reactive initiators include at least one of benzoyl peroxide, acetyl peroxide, dilauryl peroxide, hydrogen peroxide, potassium persulfonate, and 2,2′-azobis(isobutyronitrile).

9. The method as claimed in claim 5 , wherein the UV curable compounds include at least one of caprolactone acrylate, 1,6-hexanediol diacrylate, trimethylolpropane triacrylate, pentaerythritol triacrylate, lauryl acrylate, urethane acrylate, epoxy acrylate, polyester acrylate, and silicon acrylate.

10. The method as claimed in claim 9 , wherein the UV curable compounds include from about 5 percent by weight to about 50 percent by weight of trimethylolpropane triacrylate, from about 5 percent by weight to about 50 percent by weight of multi-functional urethane acrylate, and from about 5 percent by weight to about 50 percent by weight of 1,6-hexanediol diacrylate base on the total weight of UV curable compounds.

11. The method as claimed in claim 5 , wherein the transparent adhesive further includes photoinitiators.

12. The method as claimed in claim 5 , wherein the acrylic copolymer and the UV curable compounds are from about 70:30 to about 95.5:0.5 by weight ratio in the transparent adhesive.

Assignees

• Samsung Display Co Ltd

Inventors

• Hwang Hyeon-Deuk
• Cho Jong-Whan
• Park Jong-Deok

Classifications

• B32B2310/0831

  using UV radiation · CPC title

• B32B37/182

  one or more of the layers being plastic · CPC title

• B32B37/12 Primary

  characterised by using adhesives · CPC title

• B32B2457/20

  Displays, e.g. liquid crystal displays, plasma displays · CPC title

• B32B2037/1253

  curable adhesive · CPC title