Patent application number | Description | Published |
20080231590 | LIGHT GUIDE PLATE AND BACKLIGHT ASSEMBLY USING THE SAME - Disclosed herein are a light guide plate and a backlight assembly using the same, which may improve the uniformity of light using prism patterns having a trapezoidal shape. The light guide plate includes a body, a plurality of first projections, and a plurality of second projections. The body includes an incident surface to which light is incident and an emitting surface from which the incident light is emitted. The plurality of first projections is disposed on the emitting surface of the body and has a trapezoidal shape in a section perpendicular to the incident surface. The plurality of second projections is disposed on the emitting surface of the body and has a shape symmetrical to a shape of the first projections. | 09-25-2008 |
20090097228 | OPTICAL PLATE, METHOD OF MANUFACTURING OPTICAL PLATE, BACKLIGHT ASSEMBLY AND LIQUID CRYSTAL DISPLAY DEVICE - An optical plate includes a main body plate, and a plurality of lens patterns formed on a first surface of the main body plate, wherein the lens patterns are elongated in a first direction and arranged in parallel with each other in a second direction crossing the first direction, wherein a cross section of the lens patterns form a part of an ellipse shape, the ratio of a semi-major axis to a semi-minor axis of the ellipse shape ranging from about 1.65 to about 1.75. | 04-16-2009 |
20090167983 | Optical sheet and display device having the same - An optical sheet includes a base layer, a light-condensing layer and a plurality of light-reflecting portions. The base layer includes a first surface and a second surface. The light-condensing layer includes a plurality of light-condensing portions with a first pitch. The light-condensing portions are formed along a first direction of the second surface. The light-reflecting portions are formed in the first surface to be spaced apart from each other along the -first direction in correspondence with a plurality of grooves, each groove formed between two light-condensing portions. An interval distance between a center of the light-condensing portion and an edge of the light-reflecting portion increases when moving toward the edge of the first surface from a center of the first surface along the first direction. Therefore, the number of the optical sheets used for the display device may be reduced. | 07-02-2009 |
20090168452 | Optical sheet and display device having the same - An optical sheet includes a base layer, a light-condensing layer and a plurality of light-reflecting portions. The light-condensing layer includes a plurality of light-condensing portions formed on a second surface of the base layer along a first direction crossing a longitudinal side and a vertical side of the optical sheet that meet each other at the second surface. The light-condensing portions are extended in a second direction crossing the first direction to be tilted with respect to the longitudinal side and the vertical side. The light-reflecting portions are formed in the first surface corresponding to a plurality of recesses where the light-condensing portions meet each other to be formed in the second direction. The center of the light-reflecting portion is spaced apart from the recessed in the first direction. Thus, a plurality of optical sheets such as a diffusion sheet and a light-condensing sheet may be omitted. | 07-02-2009 |
20090303414 | OPTICAL MEMBER WITH A SCATTER LAYER, AND BACKLIGHT ASSEMBLY AND DISPLAY DEVICE HAVING THE SAME - A display device includes a backlight assembly including an optical member comprising: a base film; a plurality of linear shaped prisms disposed on the base film and extending in one direction; and a scatter layer underlying the base film and attached to the base film and comprising a coat of beads which is spread under the base film, the scatter layer having a haze value of about 10% to about 30%. | 12-10-2009 |
20100046202 | BACKLIGHT ASSEMBLY WITH IMPROVED BRIGHTNESS UNIFORMITY AND DISPLAY APPARATUS HAVING THE SAME - A backlight assembly and a display apparatus having the backlight assembly are disclosed. A diffusion plate is provided above a plurality of lamps. Diffusion patterns that cause contrast inversion and diffusion patterns that do not cause contrast inversion are arranged on a surface of a diffusion plate, in an alternating manner along a longitudinal direction of the lamps. Thus, a brightness difference between a first area in which the lamps are positioned and a second area between two adjacent lamps is reduced, thereby improving a brightness uniformity of light from the backlight assembly. | 02-25-2010 |
20100066946 | BACKLIGHT ASSEMBLY AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - A backlight assembly includes an optical member that diffuses light generated from lamps. The optical member includes first and second diffusion members that are designed to have light transmittance that complementarily vary according to areas. Thus, an optical member capable of supplying light having uniform brightness onto the whole display area of the LCD is easily designed. | 03-18-2010 |
20100073962 | DISPLAY APPARATUS AND METHOD OF MANUFACTURING OPTICAL SHEET FOR THE SAME - A display apparatus includes a display panel and a backlight unit for an embodiment. The display panel includes a plurality of pixels and the backlight unit supplies light to the display panel. The backlight unit includes a light source, which generates the light, and an optical sheet. The optical sheet includes a plurality of prism patterns formed on a surface of the optical sheet facing the display panel. The prism patterns include a plurality of peaks and a plurality of valleys to change the path of the light, and a plurality of diffusion patterns arranged at the peaks and valleys. | 03-25-2010 |
20100128464 | LIGHT DIFFUSION PLATE, METHOD FOR MANUFACTURING THE SAME AND BACKLIGHT ASSEMBLY HAVING THE SAME - In one embodiment, a light diffusion plate includes a base layer and a plurality of diffusion dots. The base layer includes a first surface and a second surface facing the first surface. A plurality of unit areas is defined on the first surface. The light diffusion dots are respectively formed in the unit areas, and formed having a random pattern so that the area of each of the light diffusion dots irregularly varies along arbitrary directions on the first surface. | 05-27-2010 |