JP2020067623A5 - - Google Patents

Claims (18)

A method for producing a liquid crystal layer laminate in which at least a first liquid crystal layer, a first adhesive layer, and a second liquid crystal layer are laminated in this order.
A step of preparing a first liquid crystal layer with a base material layer having the first base material layer and the first liquid crystal layer formed by polymerizing a polymerizable liquid crystal compound on the first base material layer.
A step of preparing a second liquid crystal layer with a base material layer having the second base material layer and the second liquid crystal layer formed by polymerizing a polymerizable liquid crystal compound on the second base material layer.
Via the first adhesive layer, laminating the second liquid crystal layer side of the said first liquid crystal layer side of the substrate layer with the first liquid crystal layer, before Kimoto material layer with the second liquid crystal layer, Including
When the storage elastic modulus at a temperature of 30 ° C. is E [Pa] and the thickness is t [m], the first adhesive layer has the following formula (1):
E × t ≧ 8000 (1)
A method for manufacturing a liquid crystal layer laminate that satisfies the above relationship. The method for producing a liquid crystal layer laminate according to claim 1, wherein the first adhesive layer is an adhesive cured layer made of a cured product of a curable adhesive. The method for producing a liquid crystal layer laminate according to claim 1 or 2, further comprising a step of peeling off the first base material layer after the laminating step. A liquid crystal layer laminate in which at least the first liquid crystal layer, the first adhesive layer, and the second liquid crystal layer are laminated in this order.
The first liquid crystal layer and the second liquid crystal layer are cured layers of a polymerizable liquid crystal compound.
When the storage elastic modulus at a temperature of 30 ° C. is E [Pa] and the thickness is t [m], the first adhesive layer has the following formula (1):
E × t ≧ 8000 (1)
Liquid crystal layer laminate that satisfies the relationship of. The liquid crystal layer laminate according to claim 4, wherein the first adhesive layer is an adhesive cured layer made of a cured product of a curable adhesive. The liquid crystal layer laminate according to claim 4 or 5, further comprising a second base material layer on the side of the second liquid crystal layer opposite to the first adhesive layer. The liquid crystal layer laminate according to claim 6, further comprising a first base material layer on the opposite side of the first liquid crystal layer from the first adhesive layer. A method for producing an optical laminate in which at least an optical film, a second adhesive layer, a first liquid crystal layer, a first adhesive layer, and a second liquid crystal layer are laminated in this order.
The liquid crystal layer laminate according to claim 7, wherein the first exposed surface side exposed by peeling the first base material layer from the liquid crystal layer laminate produced by the method for producing the liquid crystal layer laminate according to claim 3. The second adhesive layer and the optical film are placed on the first exposed surface side exposed by peeling the first base material layer from the body or on the first liquid crystal layer side of the liquid crystal layer laminate according to claim 6. A method for manufacturing an optical laminate, which comprises a step of laminating in this order. The method for producing an optical laminate according to claim 8, further comprising a step of laminating the second adhesive layer and the optical film in this order followed by a step of peeling off the second base material layer. Further, a step of preparing an adhesive layer with a release layer in which the adhesive layer and the release layer are laminated, and
The optical lamination according to claim 9, further comprising a step of laminating the pressure-sensitive adhesive layer side of the pressure-sensitive adhesive layer with a peel-off layer on the side of the second exposed surface exposed by peeling off the second base material layer. How to make a body. The method for producing an optical laminate according to claim 10, further comprising a step of laminating the pressure-sensitive adhesive layer side of the pressure-sensitive adhesive layer with a release layer and then a step of peeling the release layer. The method for producing an optical laminate according to any one of claims 8 to 11, wherein the optical film includes a polarizing plate. An optical laminate in which at least an optical film, a second adhesive layer, a first liquid crystal layer, a first adhesive layer, and a second liquid crystal layer are laminated in this order.
The first liquid crystal layer and the second liquid crystal layer are cured layers of a polymerizable liquid crystal compound.
When the storage elastic modulus at a temperature of 30 ° C. is E [Pa] and the thickness is t [m], the first adhesive layer has the following formula (1):
E × t ≧ 8000 (1)
An optical laminate that satisfies the relationship. The optical laminate according to claim 13, wherein the first adhesive layer is an adhesive cured layer made of a cured product of a curable adhesive. The optical laminate according to claim 13 or 14, further comprising a second base material layer on the side of the second liquid crystal layer opposite to the first adhesive layer. The optical laminate according to claim 13 or 14, further comprising an adhesive layer on the side of the second liquid crystal layer opposite to the first adhesive layer. The optical laminate according to claim 16, further comprising a release layer on the side of the pressure-sensitive adhesive layer opposite to the second liquid crystal layer. The optical laminate according to any one of claims 13 to 17, wherein the optical film includes a polarizing plate.