Liquid crystal display device and backlight unit
1 Assignment
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Accused Products
Abstract
In a backlight unit provided with a plurality of optical sheets, a first optical sheet is characterized by having different coefficients of linear expansion in two different directions (a first direction and a second direction) with the coefficient of linear expansion in the first direction larger than that in the second direction. A second optical sheet is arranged adjacently to the first optical sheet. The coefficient of linear expansion of the second optical sheet in approximately the same direction as the first direction of the first optical sheet is approximated to the coefficient of linear expansion of the first optical sheet in the first direction.
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Citations
22 Claims
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1-8. -8. (canceled)
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9. A backlight unit comprising:
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a first optical sheet having coefficients of expansion different between a first direction and a second direction in a plane with the coefficient of linear expansion in the first direction larger than that in the second direction; and
a second optical sheet that is an optical different from the first optical sheet and that is disposed adjacently to the first optical sheet and in a separable manner in a direction normal to the plane thereof, wherein, the coefficient of linear expansion of the second optical sheet in the direction corresponding to the first direction is approximated to the coefficient of linear expansion of the first optical sheet in the first direction. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A backlight unit comprising:
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a first optical sheet with a coefficient of linear expansion larger than a predetermined value in a first direction in a plane; and
a second optical sheet that is an optical sheet different from the first optical sheet and that is disposed adjacently to the first optical sheet in a separable manner and in a direction normal to the plane thereof, where in the coefficient of linear expansion of the second optical sheet in the direction corresponding to the first direction is approximated to the coefficient of linear expansion of the first optical sheet in the first direction. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification