公开(公告)号：US12098271B2

公开(公告)日：2024-09-24

申请号：US17117846

申请日：2020-12-10

Applicant: Samsung Display Co., Ltd.

Inventor： Tetsuya Fujiwara ,  Hideo Umeda ,  Katsuhiro Yamamoto ,  Keisuke Morita

IPC: C08L33/08 ,  C08F220/18 ,  C08F220/20 ,  C08G83/00 ,  C09J7/30

CPC classification number: C08L33/08 ,  C08F220/1811 ,  C08F220/20 ,  C08G83/007 ,  C09J7/30 ,  C08L2205/02 ,  C08L2205/03 ,  C09J2203/318 ,  C09J2203/326 ,  C09J2301/416 ,  C09J2433/00

Abstract: 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.

公开(公告)号：US12168739B2

公开(公告)日：2024-12-17

申请号：US17813924

申请日：2022-07-20

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Tetsuya Fujiwara

IPC: G02B1/14 ,  C09J7/22 ,  C09J133/10 ,  C09J175/04 ,  G06F1/16

Abstract: A method of manufacturing an adhesive member includes providing, for a substrate, a resin composition having a viscosity of about 5 cP to about 50 cP, as measured according to JISK2283 method, at about 25° C. The resin composition is exposed to a first light to form a preliminary adhesive member having a curing rate of about 80% to about 98%. The preliminary adhesive member is exposed to a second light having a light integral/dose that is more than that of the first light to form an adhesive member. The preliminary adhesive member may have a loss tangent (tan δ) of about 0.2 to about 0.6 and may have a glass transition temperature of about −70° C. to −30° C. Accordingly, the preliminary adhesive member and adhesive member formed by the method of manufacturing an adhesive member may exhibit increased reliability.

公开(公告)号：US11898066B2

公开(公告)日：2024-02-13

申请号：US17859494

申请日：2022-07-07

Applicant: Samsung Display Co., Ltd.

Inventor： Tetsuya Fujiwara

IPC: C09D175/06 ,  C09J7/38 ,  C09J175/06

CPC classification number: C09J175/06 ,  C09J7/385 ,  C09J2203/318

Abstract: 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)]×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.

公开(公告)号：US12084598B2

公开(公告)日：2024-09-10

申请号：US17381107

申请日：2021-07-20

Applicant: Samsung Display Co., Ltd.

Inventor： Tetsuya Fujiwara

IPC: C09J4/06 ,  B32B7/12 ,  B32B17/10 ,  B32B27/06 ,  C09J133/06 ,  G06F3/041 ,  G09F9/30

CPC classification number: C09J4/06 ,  B32B7/12 ,  B32B17/10 ,  B32B27/06 ,  C09J133/066 ,  G06F3/0412 ,  G09F9/301 ,  B32B2457/20 ,  C09J4/06 ,  C08F290/067

Abstract: 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.

公开(公告)号：US12071500B2

公开(公告)日：2024-08-27

申请号：US17383772

申请日：2021-07-23

Applicant: Samsung Display Co., Ltd.

Inventor： Tetsuya Fujiwara

IPC: C08F255/10 ,  C08F2/50 ,  C09J4/06 ,  G02F1/1333

CPC classification number: C08F255/10 ,  C08F2/50 ,  C09J4/06 ,  G02F1/133311 ,  C09K2323/05 ,  C09K2323/057 ,  C09K2323/059 ,  G02F2202/28 ,  C08F290/067 ,  C08F220/20 ,  C08F220/1811 ,  C08F220/36 ,  C08F279/02 ,  C08F220/20 ,  C08F220/1811 ,  C08F220/36

Abstract: 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.

公开(公告)号：US20230159801A1

公开(公告)日：2023-05-25

申请号：US17813924

申请日：2022-07-20

Applicant: Samsung Display Co., Ltd.

Inventor： Tetsuya Fujiwara

IPC: C09J133/10 ,  C09J7/22 ,  C09J175/04 ,  G02B1/14

CPC classification number: C09J133/10 ,  C09J7/22 ,  C09J175/04 ,  G02B1/14 ,  C09J2203/326 ,  C09J2301/416 ,  C09J2301/408 ,  G06F1/1652

Abstract: A method of manufacturing an adhesive member includes providing, for a substrate, a resin composition having a viscosity of about 5 cP to about 50 cP, as measured according to JISK2283 method, at about 25° C. The resin composition is exposed to a first light to form a preliminary adhesive member having a curing rate of about 80% to about 98%. The preliminary adhesive member is exposed to a second light having a light integral/dose that is more than that of the first light to form an adhesive member. The preliminary adhesive member may have a loss tangent (tan δ) of about 0.2 to about 0.6 and may have a glass transition temperature of about −70° C. to −30° C. Accordingly, the preliminary adhesive member and adhesive member formed by the method of manufacturing an adhesive member may exhibit increased reliability.