ADHESIVE COMPOSITION, ADHESIVE FILM INCLUDING THE SAME, METHOD OF PREPARING ADHESIVE FILM, AND DISPLAY MEMBER USING THE SAME

• US 20140162057A1
• Filed: 02/07/2014
• Published: 06/12/2014
• Est. Priority Date: 08/11/2011
• Status: Active Grant

• Current Assignee: Cheil Industries Incorporated
• Original Assignee: Ik Hwan Cho, In Cheon Han
• Inventors: CHO, Ik Hwan, HAN, In Cheon
• Granted Patent: US 9,469,528 B2
• Time in Patent Office: Days
• US Class Current: 428/339
• CPC Class Codes: B82Y 20/00 Nanooptics, e.g. quantum optics or photonic crystals
• CPC Class Codes: C08F 220/14 Methyl esters , e.g. methyl (meth)acrylate
• CPC Class Codes: C08F 220/1804 C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
• CPC Class Codes: C08F 220/1808 C8-(meth)acrylate, e.g. isooctyl (meth)acrylate or 2-ethylhexyl (meth)acrylate
• CPC Class Codes: C08F 220/1811 C10or C11-(Meth)acrylate, e.g. isodecyl (meth)acrylate, isobornyl (meth)acrylate or 2-naphthyl (meth)acrylate
• CPC Class Codes: C08F 220/20 of polyhydric alcohols or phenols , e.g. 2-hydroxyethyl (meth)acrylate or glycerol mono-(meth)acrylate
• CPC Class Codes: C08F 220/58 containing oxygen in addition to the carbonamido oxygen , e.g. N-methylolacrylamide, N-(meth)acryloylmorpholine
• CPC Class Codes: C08F 222/102 of dialcohols, e.g. ethylene glycol di(meth)acrylate or 1,4-butanediol dimethacrylate
• CPC Class Codes: C09J 133/08 Homopolymers or copolymers of acrylic acid esters
• CPC Class Codes: C09J 4/06 Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
• CPC Class Codes: G02B 5/3033 in the form of a thin sheet or foil, e.g. Polaroid
• CPC Class Codes: G02F 2202/28 Adhesive materials or arrangements
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: Y10T 428/269 including synthetic resin or polymer layer or component
• CPC Class Codes: Y10T 428/31699 Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 428/31938 Polymer of monoethylenically unsaturated hydrocarbon

Abstract

A display member includes a display panel, a first adhesive film on the display panel a transparent conductive layer on the first adhesive film, and a second adhesive film and a window on the second adhesive film. At least one of the first adhesive film and the second adhesive film includes a UV curable adhesive composition including a morpholine group-containing (meth)acrylic copolymer.

Claims

1. A display member, comprising:

a display panel,

a first adhesive film on the display panel,

a transparent conductive layer on the first adhesive film, and

a second adhesive film and a window on the second adhesive film,

wherein at least one of the first adhesive film and the second adhesive film includes a UV curable adhesive composition including a morpholine group-containing (meth)acrylic copolymer.

2. The display member as claimed in claim 1, wherein the UV curable adhesive composition includes the morpholine group-containing (meth)acrylic copolymer and a cross-linking agent.

3. The display member as claimed in claim 1, wherein the morpholine group-containing (meth)acrylic copolymer is a copolymer of at least a C1 to C20 alkyl (meth)acrylate, an alicyclic (meth)acrylate, a hydroxyl group-containing monomer, and an unsaturated morpholine.

4. The display member as claimed in claim 3, wherein the unsaturated morpholine includes at least one selected from the group of vinyl morpholine, acryloyl morpholine, and methacryloyl morpholine.

5. The display member as claimed in claim 1, wherein the morpholine group-containing (meth)acrylic copolymer includes a copolymer of a monomer mixture including about 60 to 95 wt % of a C1 to C20 alkyl (meth)acrylate, about 0.5 to 20 wt % of an alicyclic (meth)acrylate, about 0.5 to 40 wt % of a hydroxyl group-containing monomer, and about 0.1 to 15 wt % of an unsaturated morpholine.

6. The display member as claimed in claim 1, wherein the morpholine group-containing (meth)acrylic copolymer has a viscosity from about 1,000 to about 7,000 cP at 25°

C.

7. The display member as claimed in claim 1, wherein the adhesive composition has an acid value of 0.

8. The display member as claimed in claim 1, wherein the display panel is OLED panel.

9. The display member as claimed in claim 1, wherein the adhesive film is optically transparent

10. The display member as claimed in claim 1, wherein the adhesive film has a thickness from about 50 μ

m to about 2 mm.

11. The display member as claimed in claim 1, wherein the display member further include a polarizing plate between the first adhesive film and the display panel.

12. The display member as claimed in claim 1, wherein the display member further includes a polarizing plate between the second adhesive film and the transparent conductive layer.

13. The display member as claimed in claim 1, wherein the transparent conductive layer includes at least one of ITO (indium tin oxide), FTO (fluorinated tin oxide), AZO (aluminum doped zinc oxide), CNT (carbon nanotube), an Ag nanowire, graphene, a metallic nanowire film and an organo-conductive film that contains conductive particles.

14. The display member as claimed in claim 1, wherein:

the at least one of the first adhesive film and the second adhesive film includes a morpholine group, an alicyclic group, and a hydroxyl group, wherein

a sample structure including an ITO film and the adhesive film attached to the ITO film has a resistance variation (Δ

R) of less than about 5%, as defined by Equation 1;