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公开(公告)号:US20230126251A1
公开(公告)日:2023-04-27
申请号:US17868248
申请日:2022-07-19
发明人: Tetsuya FUJIWARA
IPC分类号: H04M1/02 , C09J133/08
摘要: An adhesive member includes: a polymer derived from a resin composition including at least one (meth)acrylate monomer, at least one urethane (meth)acrylate oligomer, and at least one photoinitiator; a 180° peel force of about 2000 gf/25 mm to less than about 8000 gf/25 mm for a glass substrate at a temperature of about −20° C.; and a thermal expansion stress of about 0.1 N/mm2 to less than about 2 N/mm2 in accordance with changes in temperature from about −20° C. to about 60° C.
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公开(公告)号:US20210292536A1
公开(公告)日:2021-09-23
申请号:US17117846
申请日:2020-12-10
IPC分类号: C08L33/08 , C08F220/20 , C08F220/18 , C08G83/00 , C09J7/30
摘要: A resin composition includes a first (meth)acrylic resin having a weight average molecular weight of about 500 or less, a second (meth)acrylic resin having a weight average molecular weight of about 6,000 or more, a radical polymerization initiator, and a polyrotaxane compound, where the resin composition has a viscosity in a range of about 1.0 mPa·s to about 100 mPa·s at 25° C.
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公开(公告)号:US20230136807A1
公开(公告)日:2023-05-04
申请号:US17859494
申请日:2022-07-07
发明人: Tetsuya FUJIWARA
IPC分类号: C09J175/06 , C09J7/38
摘要: An adhesive member includes a polymer derived from a resin composition. The resin composition includes at least one (meth)acrylate monomer, at least one urethane (meth)acrylate oligomer, and at least one photoinitiator. The adhesive member has a glass transition temperature in a range of about -70° C. to about -30° C., a 180 ° peel force of about 800 gf/25 mm or greater at a temperature of 25° C., and a deformation recovery rate in a range of about 75% to about 100% at temperatures of -20° C. and 60° C. The deformation recovery rate satisfies the following equation: X2 = [1-(X1/25)] x 100%, where X1 denotes a shear strain measured 600 seconds after removing a shear stress applied in a way such that the adhesive member has a shear strain of 25% at the temperatures of -20° C. and 60° C., and X2 denotes the deformation recovery rate
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公开(公告)号:US20220177626A1
公开(公告)日:2022-06-09
申请号:US17383772
申请日:2021-07-23
发明人: Tetsuya FUJIWARA
IPC分类号: C08F255/10 , C08F2/50 , C09J4/06 , G02F1/1333
摘要: A resin composition may include a (meth)acrylate (A) comprising a hydroxy group and having a molecular weight of about 500 or less, and a polymer (B) comprising polyisoprene or polybutadiene as a main skeleton, having at least one radical reactive group in one molecule, and having a molecular weight in a range of about 2,000 to about 35,000, wherein the resin composition has a glass transition temperature in a range of about −50° C. to about 0° C. after the resin composition is cured, and the resin composition has a viscosity in a range of about 5 mPa·s to about 50 mPa·s at a temperature in a range of about 30° C. to about 50° C.
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公开(公告)号:US20240301254A1
公开(公告)日:2024-09-12
申请号:US18588381
申请日:2024-02-27
发明人: Tetsuya FUJIWARA
IPC分类号: C09J133/14 , C08F20/32 , C08F20/36 , C08F224/00 , C09J7/30 , C09J11/06
CPC分类号: C09J133/14 , C08F20/32 , C08F20/36 , C08F224/00 , C09J7/30 , C09J11/06
摘要: Embodiments provide a resin composition, an adhesive member, and a display device. The resin composition includes a urethane (meth)acrylate oligomer, a first monomer, and a second monomer, wherein an amount of the urethane (meth)acrylate oligomer is in a range of about 5 wt % to about 20 wt % based on a total weight of the resin composition, an amount of the second monomer is in a range of about 10 wt % to about 30 wt % based on a total weight of the resin composition, and a total amount of the urethane (meth)acrylate oligomer and the first monomer is in a range of about 50 wt % to about 80 wt % based on a total weight of the resin composition.
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公开(公告)号:US20240263053A1
公开(公告)日:2024-08-08
申请号:US18426062
申请日:2024-01-29
发明人: Tetsuya FUJIWARA
IPC分类号: C09J133/06 , C08F220/18 , C09J4/00 , H01L33/52 , H05K5/03 , H10K59/80
CPC分类号: C09J133/066 , C08F220/1808 , C08F220/1811 , C09J4/00 , H05K5/03 , H01L33/52 , H10K59/873
摘要: A resin composition including a urethane (meth)acrylate oligomer containing two or more (meth)acryloyl groups, a hydroxy group-containing (meth)acrylate, and an alicyclic (meth)acrylate having a glass transition temperature of about 80° C. or greater, wherein the resin composition includes the urethane (meth)acrylate oligomer in a specific amount and the hydroxy group-containing (meth)acrylate in a specific concentration, and thus has a glass transition temperature of about −20° C. or greater and at most (e.g., less than) about 20° C. once cured is provided. An adhesive member and a display device including a cured product of the resin composition are provided.
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公开(公告)号:US20240209246A1
公开(公告)日:2024-06-27
申请号:US18471044
申请日:2023-09-20
发明人: Tetsuya FUJIWARA
IPC分类号: C09J133/10
CPC分类号: C09J133/10 , C09J2301/312 , C09J2301/408 , C09J2301/416 , C09J2301/502 , C09J2400/143
摘要: An adhesive member of may include a polymer derived from a resin composition including at least one urethane (meth)acrylate oligomer including two (meth)acryloyl groups per oligomer unit, at least one polyfunctional (meth)acrylate monomer including multiple (meth)acryloyl groups per monomer unit, and at least one photoinitiator. The weight of the urethane (meth)acrylate oligomer may be 1 wt % or more and less than 10 wt %, and the weight of the polyfunctional (meth)acrylate monomer may be 0.2 wt % or more and less than 2 wt %, based on a total weight of the resin composition. The glass transition temperature of the adhesive member may be −10° C. or more and less than 10° C., and the loss tangent (tan δ) of the adhesive member at −40° C. may be 0.01 or more and less than 0.3. Accordingly, the adhesive member may undergo easy rework at −40° C. and show excellent or suitable adhesion reliability during use.
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公开(公告)号:US20220169893A1
公开(公告)日:2022-06-02
申请号:US17381107
申请日:2021-07-20
发明人: Tetsuya FUJIWARA
IPC分类号: C09J4/06 , C09J133/06 , G06F3/041
摘要: A resin composition including at least one of a monofunctional (meth)acrylate having an imide ring structure or a monomer having a 2-pyrrolidone skeleton and a radical curable group in an amount of about 0.1 weight percent to about 5 weight percent based on the total weight of the resin composition, wherein the resin composition has a viscosity of about 5 millipascal seconds to less than about 50 millipascal seconds at 25° C., and wherein a glass transition temperature of the resin composition after being cured satisfies a value of about −50° C. to less than about 0° C.
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