Light diffusion sheet, backlight unit, liquid crystal display device, information device, and stacked light diffusion sheet
AssigneeKeiwa Inc.
InventorsYu KARIYA, Satoshi SHIBA
Life of this patent
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Abstract
A light diffusion sheet (43B) has a plurality of inverted substantially polygonal pyramid-shaped recesses (105) on a first surface (102a) that serves as a light emission surface or a light entrance surface. A second surface (101a) on the opposite side to the first surface (102a) is a matte surface, and a flattening layer, for example a flattening printed layer (103), constituted by a light-transmitting resin, for example light-transmitting ink (106), is provided so as to cover irregularities on the matte surface.
Claims12
A light diffusion sheet having a plurality of inverted substantially polygonal pyramid-shaped recesses provided on a first surface that serves as a light emission surface or a light entrance surface, wherein
- a second surface on the opposite side to the first surface is a matte surface, and
- a flattening printed layer constituted by light-transmitting ink is provided so as to cover irregularities on the matte surface.
A light diffusion sheet in which a plurality of inverted substantially polygonal pyramid-shaped recesses are provided on a first surface that serves as a light emission surface or a light entrance surface, wherein
- a second surface on the opposite side to the first surface is a matte surface, and
- a flattening layer constituted by a light-transmitting resin is provided so as to cover irregularities on the matte surface.
Dependencies are inferred from the claim text.