Optical laminate and image display device
AssigneeFUJIFILM Corporation
InventorsTakashi Yonemoto, Naoki Koito, Shun Inoue
Life of this patent
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Abstract
Provided is an image display device including an optical laminate having, in order, a pressure-sensitive adhesive layer, a specific laminate including an alignment layer and an optically anisotropic layer which are adjacent to each other, and another pressure-sensitive adhesive layer in this order, in which the pressure-sensitive adhesive layers are adjacent to the two surfaces of the specific laminate. The specific laminate has a thickness of 15 μm or less, the optically anisotropic layer has a thickness of 5 μm or less, and a thickness d of the alignment layer and an elastic modulus E of the alignment layer satisfy Expression (1): −E+0.45×d+3.6>0 (1), where d is in units of μm, and E is in units of GPa.
Claims20
An optical laminate comprising:
- a pressure-sensitive adhesive layer 1;
- a specific laminate including an alignment layer and an optically anisotropic layer which are adjacent to each other;
- and
- a pressure-sensitive adhesive layer 2 in this order,
- wherein the pressure-sensitive adhesive layer 1 is adjacent to one surface of the specific laminate, and the pressure-sensitive adhesive layer 2 is adjacent to the other surface of the specific laminate,
- the pressure-sensitive adhesive layer 1, the alignment layer, the optically anisotropic layer, and the pressure-sensitive adhesive layer 2 are provided in this order, or the pressure-sensitive adhesive layer 1, the optically anisotropic layer, the alignment layer, and the pressure-sensitive adhesive layer 2 are provided in this order,
- the specific laminate has a thickness of 15 μm or less,
- the optically anisotropic layer has a thickness of 5 μm or less, and
- a thickness d of the alignment layer and an elastic modulus E of the alignment layer satisfy Expression (1), where the thickness d of the alignment layer is denoted in units of μm, and the elastic modulus E of the alignment layer is denoted in units of GPa,
- -
- E
- +
- 0.45
- ×
- d
- +
- 3.6
- >
- 0.
- (
- 1
- )
Dependencies are inferred from the claim text.