| Patent application number | Description | Published |
|---|
| 20080297697 | Light guide plate, backlight assembly including the same, and liquid crystal display device including the same - Disclosed herein are a light guide plate, a backlight assembly including the light guide plate, and a liquid crystal display device including the backlight assembly which can uniformly maintain the brightness uniformity and prevent the moiré phenomenon. The light guide plate in accordance with the present disclosure includes: an incident surface, to which light generated from a light source is incident, including a diffusion pattern formed in a round shape; an emitting surface, through which the light is emitted, including a first prism pattern; and an opposite surface, formed opposite to the emitting surface, including a direction change pattern by which the direction of the light is changed toward the emitting surface. | 12-04-2008 |
| 20080319715 | LIGHT GUIDE PLATE, METHOD OF MANUFACTURING THE SAME, AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME - A light guide plate includes a light incident surface to which light is incident as incident light, an opposite surface formed opposite to the light incident surface, a light emitting surface through which the incident light is emitted, a rear surface formed opposite to the light emitting surface and including a prism pattern which reflects the incident light to the light emitting surface, and lateral surfaces, wherein a diffuse reflection pattern is formed on at least any one of the light emitting surface and the lateral surfaces to diffuse-reflect light incident to the lateral surfaces, thus rendering a brightness at both the opposite surface and the light incident surface substantially uniform. | 12-25-2008 |
| 20090034233 | OPTICAL UNIT, BACKLIGHT ASSEMBLY HAVING THE SAME AND DISPLAY DEVICE HAVING THE SAME - An optical unit includes a base, a light-condensing member disposed on the base to condense a first portion of light that is incident onto the base and protrusion members disposed on a surface of the light-condensing member to scatter a second portion of the light that is incident onto the base. A backlight assembly includes light sources, an optical unit receiving light from the light sources to condense and scatter the light, and may also include an optical member disposed over the optical unit to enhance the front luminance of the light. A display device includes light sources, an optical module and a display panel. Thus, display quality of the display device may be enhanced. | 02-05-2009 |
| 20090122229 | Light guiding and dispersing plate and display device having the same - A monolithic light guiding and dispersing plate is provided in a backlighted display panel for receiving input light from one or more edge sources and for guiding the received light throughout the plate for substantially uniform reflection upwardly and substantially uniform dispersal toward an image forming plane located above the light guiding and dispersing plate. In one embodiment, the light guiding and dispersing plate has a light receiving surface upon which the light generated by an edge light source is incident, a top major surface which is adjacent to the light receiving surface and on which a plurality of first protrusions are formed and elongated in a first direction, wherein the first protrusions have cross-sections in the shapes of partial ellipses. The plate further has a bottom major surface in which light reflecting recesses are defined to reflect light upwardly towards the top major surface. | 05-14-2009 |
| 20090167641 | Optical Plate, Backlight Assembly and Display Device Including the Same - Provided is an optical plate that resolves white screen generation while maintaining emission brightness, a backlight assembly and a display device including the same. The optical plate is a light guide plate for a liquid crystal display. The light guide plate includes at least one plane in which a plurality of uneven patterns forming crests and valleys are formed. The plurality of uneven patterns is formed such that the crests rise to a plurality of different heights. | 07-02-2009 |
| 20090167987 | Light Guide Plate, and Backlight Assembly and Liquid Crystal Display Having the Same - A light guide plate for guiding light includes a light-incident portion allowing light generated from a light source to be incident thereon, a light-facing portion opposite to the light-incident portion, and a first prism pattern disposed between the light-incident portion and the light facing portion and substantially normal to a path of light incident from the light-incident portion to the light-facing portion path. | 07-02-2009 |
| 20090175051 | LIGHT GUIDE PLATE, DISPLAY DEVICE HAVING THE SAME, AND METHOD THEREOF - A light guide plate and a display device having the same are provided, which can uniformly emit light on the whole. The light guide plate includes a light input part including first and second areas to which light is incident, and a light output part neighboring the light input part and outputting light. The light having passed through the first area is emitted with its light quantity distribution biased in a first direction, and the light having passed through the second area is emitted with its light quantity distribution biased in a second direction different than the first direction. | 07-09-2009 |
| 20090180297 | BACKLIGHT ASSEMBLY - A backlight assembly which can reduce manufacturing costs and enhance display quality of a liquid crystal display (“LCD”). The backlight assembly includes: a light source emitting light; and a light guide plate (“LGP”) including an incident surface on which light emitted from the light source is incident, a top surface which adjoins the incident surface, and a bottom surface which adjoins the incident surface, faces the top surface, and includes a plurality of lower prisms separated from one another and flat portions interposed between the lower prisms, wherein each of the lower prisms includes a first surface and a second surface which are adjacent to each other, the first surface including a plurality of oblique planes having different positive slopes, the second surface having a negative slope, and where the slope forms an angle with a line normal to the incident surface. | 07-16-2009 |
| 20090180300 | BACKLIGHT ASSEMBLY, LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME, AND METHOD OF MANUFACTURING THEREOF - A backlight assembly includes a light source, a light-guide plate (LGP), a reflective sheet and at least one optical sheet. The light source emits light. The LGP includes a light-incident surface, a light-reflecting surface and a light-emitting surface. The light-incident surface receives the light from the light source. The light-reflecting surface has a plurality of first prism patterns spaced apart from each other and flat portions formed between the first prism patterns, which are substantially perpendicular to the light-incident surface. The light-emitting surface has a plurality of second prism patterns formed thereon. The reflective sheet is disposed below the LGP. At least one optical sheet is disposed on the LGP. | 07-16-2009 |
| 20090185109 | LIQUID CRYSTAL DISPLAY - A liquid crystal display capable of improving display quality while achieving a reduction in manufacturing cost. The liquid crystal display includes a liquid crystal panel having multiple pixels arranged at a first pitch; a light source for supplying light to the liquid crystal panel; and a light guide plate for guiding the light to the liquid crystal panel, wherein prisms are formed on the light guide plate at a second pitch, the second pitch is the sum of a quotient and a corrected value, the quotient is obtained by dividing the first pitch by a natural number m, the corrected value depends on a selected viewing distance and an interval between the liquid crystal panel and the prisms. | 07-23-2009 |
| 20090268484 | BACKLIGHT ASSEMBLY AND DISPLAY DEVICE HAVING THE SAME - Provided are a backlight assembly and a display device having the same. The backlight assembly includes a light source unit which generates light; and a light guide plate which comprises an incident light surface through which the light from the light source unit enters the light guide plate, an upper surface joined to the incident light surface and that includes a prism pattern, and a lower surface opposing the upper surface and formed with a plurality of concave portions. A diffusing pattern is formed on one of the upper surface and the lower surface. | 10-29-2009 |
| 20090290097 | BACKLIGHT ASSEMBLY AND DISPLAY DEVICE HAVING THE SAME - A backlight assembly includes; a plurality of light guide blocks disposed substantially in parallel with each other along a first direction, each of the plurality of light guide blocks including; a light guide plate (“LGP”) having a wedge-shape decreasing in thickness from a first side thereof to a second side thereof, and a light source unit disposed facing a side surface of the LGP, and a light source driving unit which individually controls the light source units of the plurality of light guide blocks to emit light via a local dimming method. | 11-26-2009 |
| 20090310336 | LIGHT GUIDE PLATE AND BACKLIGHT ASSEMBLY HAVING THE SAME - In a light guide plate and a backlight assembly having the same, the light guide plate includes a plurality of light guide cells. Each light guide cell has at least one incident surface that receives light from an outside light source. The incident surfaces of the light guide cells are arranged in non-parallel planes. A light source unit includes at least one light source adjacent to the incident surface of each light guide cell. Thus, brightness of the backlight assembly is improved and thickness of the backlight assembly is reduced. | 12-17-2009 |
| 20090316433 | LIGHT GUIDE PLATE AND BACKLIGHT UNIT HAVING THE SAME - In accordance with one or more embodiments of the present disclosure, a light guide plate includes a first light incident surface receiving a first external light, a second light incident surface receiving a second external light and opposite to the first light incident surface, a light exit surface connecting the first and second light incident surfaces to output the first and second external lights, a reflective surface reflecting the first and second external lights in opposition to the light exit surface, and optical path changing portions each of which having a first inclined surface and a second inclined surface. The optical path changing portions are provided on the reflective surface with a predetermined interval and recessed toward the light exit surface to reflect the first and second external lights to the light exit surface. | 12-24-2009 |
| 20100149788 | DISPLAY APPARATUS - A display apparatus includes a display panel, a light source and a plurality of a light guiding plate. The LGP includes light incident, counter, light emitting and rear surfaces. The counter and rear surfaces are respectively opposite to the light incident and light emitting surfaces. The light emitting surface includes an ineffective light emitting area making contact with the light incident surface and an effective light emitting area connecting the ineffective light emitting area with the counter surface. The counter surface of a first light guiding plate is disposed overlapping the light incident surface of a second light guiding plate along a first direction, so that the rear surface partially overlaps with the effective light emitting area of the second light guiding plate, and the light guiding plates collectively form a light guiding plate array along the first direction. | 06-17-2010 |
| 20100277951 | LIGHT GUIDE PLATE, METHOD OF MANUFACTURING THE SAME, AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME - A light guide plate includes a light incident surface to which light is incident as incident light, an opposite surface formed opposite to the light incident surface, a light emitting surface through which the incident light is emitted, a rear surface formed opposite to the light emitting surface and including a prism pattern which reflects the incident light to the light emitting surface, and lateral surfaces, wherein a diffuse reflection pattern is formed on at least any one of the light emitting surface and the lateral surfaces to diffuse-reflect light incident to the lateral surfaces, thus rendering a brightness at both the opposite surface and the light incident surface substantially uniform. | 11-04-2010 |
| 20100328582 | PLANAR LIGHT SOURCE DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - A planar light source device includes a lower substrate, a cathode electrode a carbon nanotube, an upper substrate, a fluorescent layer, and an anode electrode. The cathode electrode is on the lower substrate. The carbon nanotube is electrically connected to the cathode electrode. The upper substrate faces the lower substrate. The fluorescent layer and the anode electrode are formed on the upper substrate. Therefore, the planar light source device generates light without using mercury. | 12-30-2010 |
