Patent application number | Description | Published |
20080223510 | OPTICAL SHEET MANUFACTURE METHOD AND OPTICAL SHEET - A manufacture method of an optical sheet made of a transparent thermoplastic resin sheet on whose surface a regular geometric design working is performed, the optical sheet manufacture method comprising steps of performing a geometric design working on the resin sheet at a temperature not lower than a glass transition temperature of the resin sheet, by using a metal endless working belt formed with a geometric design on a surface thereof, rapidly cooling the resin sheet on which the geometric design working is performed to a temperature lower than the glass transition temperature, and detaching the rapidly cooled resin sheet from the metal endless working belt. | 09-18-2008 |
20080259243 | OPTICAL SHEET STACK AND LIQUID CRYSTAL DISPLAY DEVICE - 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 010-23-2008 | |
20080259612 | OPTICAL SHEET - A lens film with small warpage even when a transparent base is thin is provided. Pole prisms made of a hardening resin are arranged along the extending direction on a transparent base made of a flexible material. The transparent base has a depression according to a valley between the pole prisms adjacent to each other. The pole prism has a sloping face extending to an inner wall of the depression. The transparent base is in contact with the valley. A layer not functioning as a prism, that is, a so-called skirt layer does not exist between the transparent base and the pole prisms. | 10-23-2008 |
20090079905 | Liquid crystal display apparatus - A liquid crystal display apparatus is provided in which occurrence of a moiré pattern can be prevented without largely reducing front luminance. A liquid crystal display apparatus | 03-26-2009 |
20090207341 | LIGHT CONTROL ELEMENT, SURFACE LIGHT SOURCE DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - A light control element capable of controlling deflection of light output through a light guide plate to a desired output viewing angle is provided. A light control element (prism sheet) has a plane of incidence on one surface thereof, and a plane of output on the other surface thereof. The plane of incidence is formed as having thereon a number of prism portions arrayed in parallel. Each of the prism portions has a first prism surface allowing incidence of light, and a second prism surface where the light entering through the first prism surface is reflected by total reflection on the inner side. The second prism surface has an outwardly-swelled curved profile, formed with a curvature that allows the light to output through the plane of output at a second output viewing angle wider than a first output viewing angle of a case where the second prism surface is flat. | 08-20-2009 |
20100039584 | OPTICAL ELEMENT LAMINATE, BACKLIGHT, AND LIQUID CRYSTAL DISPLAY APPARATUS - An optical element laminate is provided and includes a first optical element and a second optical element superimposed with the first optical element. The first optical element and the second optical element are each a rectangular film or sheet. The first optical element has at least two side walls at two opposing sides among four sides of the first optical element and the second optical element has at least two side walls at two opposing sides among four sides of the second optical element. | 02-18-2010 |
20100253880 | LIGHT GUIDE PLATE, SURFACE-EMITTING APPARATUS, LIQUID CRYSTAL DISPLAY APPARATUS, AND METHOD OF PRODUCING A LIGHT GUIDE PLATE - A light guide plate includes a light-incident surface, a light-reflecting surface, and a light-emitting surface. The light-reflecting surface includes a plurality of first light diffusion portions and a second light diffusion portion. The plurality of first light diffusion portions each have a first concavo-convex height. The second light diffusion portion has a second concavo-convex height lower than the first concavo-convex height and is extended around the plurality of first light diffusion portions in a net-like manner. The light-emitting surface emits light that enters from the light-incident surface and is reflected by the light-reflecting surface. | 10-07-2010 |
20100309411 | DIFFUSION SHEET AND METHOD OF MANUFACTURING THE SAME, BACKLIGHT, AND LIQUID CRYSTAL DISPLAY DEVICE - A diffusion sheet includes: a substrate having a first principal surface and a second principal surface; and structures each in a convex shape formed randomly on the first principal surface or the second principal surface of the substrate. The structures have an identical or almost identical height. The structures have an aspect ratio h/r, where r denotes an average radius of the structures and h denotes an average height of the structures, of more than 0.85 and not more than 1.50. The structures have a filling factor of not less than 60% and not more than 80%. | 12-09-2010 |
20120062820 | DIFFUSION SHEET, BACKLIGHT, LIQUID CRYSTAL DISPLAY APPARATUS AND METHOD OF MANUFACTURING DIFFUSION SHEET - A diffusion sheet includes a light-transmissive base member, a plurality of structures, and a flattened portion. The light-transmissive base member has a first main surface and a second main surface. The plurality of structures have convex shapes, which are randomly formed on the first main surface. The flattened portion is formed among the plurality of structures on the first main surface and has a surface roughness (Ra) equal to or lower than 0.6 μm. | 03-15-2012 |