Optical sheet stack and liquid crystal display device
First Claim
1. An optical sheet stack comprising a first optical sheet having a large number of irregularities consecutively arranged on one surface thereof, and a second optical sheet stacked thereon, wherein:
- the second optical sheet has, on a bonding surface thereof, an adhesive layer bonded with apexes of the irregularities, andwhile assuming pitch of arrangement of the irregularities as P, and width of bonding of each apex of the irregularities bonded to the adhesive layer as Pw, the relation;
0<
Pw/P≦
0.2is satisfied.
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Accused Products
Abstract
There is provided an optical sheet stack which includes a first optical sheet having a large number of irregularities consecutively arranged on one surface thereof, and a second optical sheet stacked thereon. In the optical sheet stack, the second optical sheet has, on a bonding surface thereof, an adhesive layer bonded with apexes of the irregularities, and while assuming pitch of arrangement of the irregularities as P, and width of bonding of each apex of the irregularities bonded to the adhesive layer as Pw, the relation of 0<Pw/P≦0.2 is satisfied.
20 Citations
12 Claims
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1. An optical sheet stack comprising a first optical sheet having a large number of irregularities consecutively arranged on one surface thereof, and a second optical sheet stacked thereon, wherein:
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the second optical sheet has, on a bonding surface thereof, an adhesive layer bonded with apexes of the irregularities, and while assuming pitch of arrangement of the irregularities as P, and width of bonding of each apex of the irregularities bonded to the adhesive layer as Pw, the relation;
0<
Pw/P≦
0.2is satisfied. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A liquid crystal display device comprising a liquid crystal display panel, a light source disposed on a back side of the liquid crystal display panel, and an optical sheet stack disposed between the liquid crystal display panel and the light source, the optical sheet stack being composed of a first optical sheet having a large number of irregularities consecutively arranged on one surface thereof and a second optical sheet stacked thereon, and wherein:
-
the second optical sheet has, on a bonding surface thereof, an adhesive layer bonded with apexes of the irregularities, and while assuming pitch of arrangement of the irregularities as P, and width of bonding of the apexes of the irregularities bonded to the adhesive layer as Pw, the relation;
0<
Pw/P≦
0.2is satisfied. - View Dependent Claims (12)
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Specification