IP Library › Granted Patent US 12,384,938
Granted Patent B2
US 12,384,938 · App. 17/682,166 · Granted Aug 12, 2025

Adhesive film and display member including the same

Inventors: Sung Hyun Mun (Suwon-si, KR); Byeong Do Kwak (Suwon-si, KR); Il Jin Kim (Suwon-si, KR); Ji Ho Kim (Suwon-si, KR); Hyung Rang Moon (Suwon-si, KR); Gwang Hwan Lee (Suwon-si, KR); Ik Hwan Cho (Suwon-si, KR); Jae Hyun Han (Suwon-si, KR)
Assignees: SAMSUNG SDI CO., LTD.; SAMSUNG ELECTRONICS CO., LTD.
C09J4/00B32B27/20B32B27/308C09J133/08C09J2203/318C09J2301/312C09J2301/408C09J2301/414C09J2433/00C09J2467/006
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Quick Facts
Patent No.
US 12,384,938
App. No.
17/682,166
Granted
Aug 12, 2025
Kind
B2
Abstract

An adhesive film and a display member, the adhesive film being formed of an adhesive composition that includes a monomer mixture comprising a hydroxyl group-containing (meth)acrylate and a comonomer, wherein the adhesive film has a recovery rate of about 40% to about 99%, the recovery rate being determined according to Method A as described herein, and wherein the adhesive film has a bubble generation area of about 0%, the bubble generation area being determined according to Method B as described herein.

Claims (10)

1. An adhesive film formed of an adhesive composition that includes a monomer mixture, the monomer mixture comprising:

a hydroxyl group-containing mono(meth)acrylate, the hydroxyl group-containing mono(meth)acrylate including:

2-hydroxyethyl(meth)acrylate, 3-hydroxypropyl (meth)acrylate, 4-hydroxybutyl(meth)acrylate, 2-hydroxypropyl(meth)acrylate, 2-hydroxybutyl(meth)acrylate, and/or 6-hydroxyhexyl(meth)acrylate, and

a comonomer, the comonomer including:

methyl acrylate, ethyl acrylate, isopropyl acrylate, n-butyl acrylate, iso-butyl acrylate, hexyl(meth)acrylate, heptyl(meth)acrylate, 2-ethylhexyl acrylate, dodecyl(meth)acrylate, polyethylene oxide monomethyl ether (meth)acrylate, polyethylene oxide monoethyl ether (meth)acrylate, polyethylene oxide monopropyl ether (meth)acrylate, polyethylene oxide monobutyl ether (meth)acrylate, polyethylene oxide monopentyl ether (meth)acrylate, polypropylene oxide monomethyl ether (meth)acrylate, polypropylene oxide monoethyl ether (meth)acrylate, polypropylene oxide monopropyl ether (meth)acrylate, monomethylaminoethyl (meth)acrylate, monoethylaminoethyl(meth)acrylate, monomethylaminopropyl (meth)acrylate, monoethylaminopropyl(meth)acrylate, 2-methoxyethyl(meth)acrylate, 2-methoxypropyl(meth)acrylate, 2-ethoxypropyl(meth)acrylate, 2-acetoacetoxyethyl (meth)acrylate, vinyltrimethoxysilane, and/or vinyltriethoxysilane, the comonomer having a glass transition temperature (Tg) of about −150° C. to about 0° C.,

wherein the adhesive film has a recovery rate of about 40% to about 99%, the recovery rate being determined according to Method A as described herein,

wherein the adhesive film has a bubble generation area of about 0%, the bubble generation area being determined according to Method B as described herein, and

wherein the adhesive film has a storage modulus after curing of about 10 kPa to about 1,000 kPa at an entire temperature range of −20° C. to 80° C.

2. The adhesive film as claimed in claim 1 , wherein the monomer mixture includes 5 wt % to 40 wt % of the hydroxyl group-containing mono(meth)acrylate and 60 wt % to 95 wt % of the co-monomer.

3. The adhesive film as claimed in claim 1 , wherein the adhesive composition further includes nanoparticles having an average particle diameter of about 5 nm to about 400 nm.

Priority Claims (2)
KR 10-2014-0187618 · Dec 23, 2014 · national
KR 10-2015-0177425 · Dec 11, 2015 · national
Continuity (2)
Continuation 14973312 · Dec 17, 2015
Related Publication 20220177732A1 · Jun 9, 2022
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