Optical sheet having bonded prism and polarizer sheets and display device
First Claim
Patent Images
1. An optical sheet comprising:
- a first lens sheet having a plurality of first three-dimensional structures arrayed to extend along a first direction on a light-emitting surface thereof;
a reflective polarizer sheet for transmitting either one of p-polarization component and s-polarization component of incident light and reflecting the other of p-polarization component and s-polarization component of the incident light,a bonding layer;
a second lens sheet having a plurality of second three-dimensional structures arrayed to extend along a second direction on a first surface thereof, the second direction intersecting with the first direction of the first three-dimensional structure;
wherein head portions of the first three-dimensional structures are bonded to the reflective polarizer sheet through the bonding layer;
each of the first three-dimensional structures arrayed in the first direction has a width of not less than 110 μ
m and not more that 330 μ
m;
each of the first three-dimensional structures arrayed in the first direction has a bonding width of not more that 20% of the width of the arrayed direction of the first three-dimensional structures; and
wherein a second surface of the second lens sheet is bonded to the reflective polarizer sheet on a surface of the reflective polarizer that is opposite to the surface of the reflective polarizer to which the first lens sheet is bonded.
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Accused Products
Abstract
The optical sheet includes a first lens sheet having a plurality of first three-dimensional structures arrayed to extend to one surface thereof, and a reflective polarizer sheet for transmitting either one of p-polarization component and s-polarization component of incident light and reflecting the other of p-polarization component and s-polarization component of the incident light. Head portions of the first three-dimensional structures are bonded to the reflective polarizer sheet.
23 Citations
10 Claims
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1. An optical sheet comprising:
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a first lens sheet having a plurality of first three-dimensional structures arrayed to extend along a first direction on a light-emitting surface thereof; a reflective polarizer sheet for transmitting either one of p-polarization component and s-polarization component of incident light and reflecting the other of p-polarization component and s-polarization component of the incident light, a bonding layer; a second lens sheet having a plurality of second three-dimensional structures arrayed to extend along a second direction on a first surface thereof, the second direction intersecting with the first direction of the first three-dimensional structure; wherein head portions of the first three-dimensional structures are bonded to the reflective polarizer sheet through the bonding layer; each of the first three-dimensional structures arrayed in the first direction has a width of not less than 110 μ
m and not more that 330 μ
m;each of the first three-dimensional structures arrayed in the first direction has a bonding width of not more that 20% of the width of the arrayed direction of the first three-dimensional structures; and wherein a second surface of the second lens sheet is bonded to the reflective polarizer sheet on a surface of the reflective polarizer that is opposite to the surface of the reflective polarizer to which the first lens sheet is bonded. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9)
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8. A display device comprising:
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a panel driven based on image signals; a light source emitting light for illuminating the panel; an optical sheet provided between the panel and the light source; wherein the optical sheet has a lens sheet having a plurality of first three-dimensional structures arrayed to extend along a first direction on a light emitting surface thereof, a bonding layer, and a reflective polarizer sheet for transmitting either one of p-polarization component and s-polarization component of incident light and reflecting the other of p-polarization component and s-polarization component of the incident light, head portions of the three-dimensional structures being bonded to the reflective polarizer sheet through the bonding layer; a second lens sheet having a plurality of second three-dimensional structures arrayed to extend along a second direction on a first surface thereof, the second direction intersecting with the first direction of the first three-dimensional structure; each of the first three-dimensional structures arrayed in the first direction has a width of not less than 110 μ
m and not more that 330 μ
m;each of the first three-dimensional structures arrayed in the first direction has a bonding width of not more that 20% of the width of the arrayed direction of the first three-dimensional structures; and wherein a second surface of the second lens sheet is bonded to the reflective polarizer sheet on a surface of the reflective polarizer that is opposite to the surface of the reflective polarizer to which the optical sheet is bonded. - View Dependent Claims (10)
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Specification