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US 12,612,480 B2Granted
Resin composition, method of manufacturing adhesive member formed from the resin composition, and display device including the adhesive member
AssigneeSamsung Display Co., Ltd.
InventorKatsuhiro Yamamoto
Life of this patent
Estimating the term…
Abstract
A resin composition includes: at least two monofunctional (meth)acrylates, at least one bifunctional (meth)acrylate, and at least one photoinitiator. The resin composition has a shear viscosity of about 8 mPa·s to about 50 mPa·s as measured at a temperature of about 25° C. according to JIS Z8803, and an apparent extensional viscosity of about 100 mPa·s or less under conditions of the temperature of about 25° C. and a Hencky strain of about 6.
Claims17
A resin composition comprising:
- at least two monofunctional (meth)acrylates;
- at least one bifunctional (meth)acrylate;
- and
- at least one photoinitiator,
- wherein the resin composition has a shear viscosity of about 8 millipascal seconds (mPa·s) to about 50 mPa·s as measured at a temperature of about 25 degrees in Celsius (° C.) according to JIS Z8803, and an apparent extensional viscosity of greater than 0 mPa·s and less than or equal to about 100 mPa·s under conditions of the temperature of about 25° C. and a Hencky strain of about 6,
- wherein after ultraviolet curing, the resin composition has a storage modulus of about 0.05 megapascals (MPa) to less than 0.2 MPa as measured at about −20° C. according to JIS K7244-7, and
- wherein after ultraviolet curing, has a 180° peel force of about 970 gf/25 mm to about 1300 gf/25 mm, wherein the 180° peel force is a peel force for a polymer substrate.
4 more elements
A method for manufacturing an adhesive member, the method comprising:
- providing a resin composition including at least two monofunctional (meth)acrylates, at least one bifunctional (meth)acrylate, and at least one photoinitiator, on a substrate using a discharge device;
- and
- providing light to the resin composition to form an adhesive member,
- wherein when a discharge pressure is applied to the resin composition from the discharge device, the resin composition has a first discharge rate, and when the discharge pressure is removed, and then the discharge pressure is again applied to the resin composition after about 60 seconds to about 300 seconds elapse, the resin composition has a second discharge rate,
- wherein an amount of change in the second discharge rate with respect to the first discharge rate is greater than 0% and less than or equal to about 20%, and
- wherein the resin composition has an apparent extensional viscosity of greater than 0 mPa·s and less than or equal to about 100 mPa·s under conditions of the temperature of about 25° C. and a Hencky strain of about 6.
3 more elements
A display device comprising:
- a display panel;
- a window disposed on the display panel;
- and
- an adhesive member disposed between the display panel and the window,
- wherein the adhesive member includes a polymer derived from a resin composition including at least two monofunctional (meth)acrylates, at least one bifunctional (meth)acrylate, and at least one photoinitiator,
- wherein the resin composition has a shear viscosity of about 8 mPa·s to about 50 mPa·s as measured at a temperature of about 25° C. according to JIS Z8803, and an apparent extensional viscosity of greater than 0 mPa·s and less than or equal to about 100 mPa·s under conditions of the temperature of about 25° C. and a Hencky strain of about 6,
- wherein the adhesive member has a storage modulus of about 0.05 MPa to less than 0.2 MPa as measured at about −20° C. according to JIS K7244-7, and
- wherein the adhesive member has a 180° peel force of about 970 gf/25 mm to about 1300 gf/25 mm for a polymer substrate.
5 more elements
Dependencies are inferred from the claim text.