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| Number | Title | Issue Date |
| 8007141 | Diffraction optical element, lighting device, and projector A diffraction optical element includes: a first diffraction pattern which diffracts entering light to produce illumination light for illuminating a first area; and a second diffraction pattern which is disposed adjacent to the first diffraction pattern and diffracts... | 08/30/2011 |
| 7967461 | Backlight module A backlight module is disclosed. The backlight module includes a light source producing light, a reflective plate that is positioned under the light source to reflect the light, and a prism plate including an incident surface and an emitting surface. The prism plate... | 06/28/2011 |
| 7909485 | Light distribution board A light distribution board used as an illuminating cover for a lamp set and having on a transparent board of it saw toothed light gratings, each saw toothed light grating is composed of a convex lens surface and a bevel plane lens surface the saw toothed light grati... | 03/22/2011 |
| 7905617 | Backlight unit Provided is a backlight unit including a plurality of light guide plates that each include a first side surface having a housing groove, an upper surface extending from an edge of the first side surface, a flat lower surface facing the upper surface, and a second si... | 03/15/2011 |
| 7824050 | Diffusion plate and backlight module using the same A diffusion plate and a backlight module for use in a liquid crystal display panel are provided. The backlight module includes a housing, a reflection plate, a light source, a diffusion plate and films. The diffusion plate has a plate body, a first supporter, and a ... | 11/02/2010 |
| 7806546 | Optical plate having three layers and backlight module with same An exemplary optical plate includes a first transparent layer (21), a second transparent layer (23) and a light diffusion layer (22). The first transparent layer includes an outer surface (210) and a plurality of first conical frustum-sha... | 10/05/2010 |
| 7806545 | Optical plate having three layers and backlight module with same An exemplary optical plate includes a first transparent layer, a second transparent layer and a light diffusion layer. The light diffusion layer is between the first and second transparent layers. The light diffusion layer, the first and second transparent layers ar... | 10/05/2010 |
| 7802895 | Direct-type backlight device The direct-type backlight device of the present invention includes a reflecting plate, a plurality of point light sources and a light diffusing plate in this order. A light emitting surface of the light diffusing plate is provided with a fine concavo-convex structur... | 09/28/2010 |
| 7784978 | Surface light source device and LCD unit The disclosed subject matter includes providing a surface light source device with a high brightness and a uniform brightness and a LCD unit having the same qualities. The surface light device can include a plurality of line light sources mounted on a circuit board ... | 08/31/2010 |
| 7766516 | Diffusion plate of backlight structure and display device using the same A diffusion plate of a backlight structure and a display device using the same are provided. The diffusion plate is used in the backlight structure having several light emitting diodes. The diffusion plate includes a main body with many depression structures positio... | 08/03/2010 |
| 7753563 | Display device A display device comprising a body for housing first and second transparent members and a carrier that supports sources of light. The first member is spaced from the second member such that a first plenum chamber is formed between the first and second members. The c... | 07/13/2010 |
| 7753544 | Light control plate, surface light source device and transmissive image display device A light control plate 30A of the present invention is disposed in front of a surface light source 20 that emits, in a predetermined direction, parallel light Fi having a substantially uniform luminance distribution. The light control plate | 07/13/2010 |
| 7736029 | Lens array and illumination module A lens array includes a first lens group with rows of first lenses having first optical surfaces, a second lens group with rows of second lenses having second optical surfaces, and a reference plane. Each first and second lenses extend along a first axis. The second... | 06/15/2010 |
| 7731394 | Display device The present invention provides a display device including: a transparent plate having at least one recessed portion formed on a rear surface side thereof, the recessed portion forming a pattern corresponding to a design to be displayed; a first reflecting member whi... | 06/08/2010 |
| 7726827 | Prism sheet and backlight module using the same An exemplary prism sheet includes a transparent main body. The main body includes a first surface and a second surface. The first surface is opposite to the second surface. A plurality of micro-depressions are defined in the first surface. A plurality of elongated a... | 06/01/2010 |
| 7695152 | Prism sheet and liquid crystal display device using the same An exemplary prism sheet includes a light input surface, a light output surface opposite to the light input surface, and a plurality of triangular pyramidal micro-elements and a plurality of hexagonal pyramidal micro-elements. The triangular pyramidal micro-elements... | 04/13/2010 |
| 7677769 | Displaying assembly for portable electronic device A displaying assembly (100) for use in a portable electronic device, includes a flexible circuit board (40), a light emitting diode (20) mounted on the flexible circuit board, and a light equalizer (10) having an optical attenuator (13... | 03/16/2010 |
| 7641352 | LED backlight device with deviated LED pitch A backlight unit usable in a liquid crystal display. In one embodiment, the backlight unit includes a substrate, a first plurality of light emitting elements positioned on the substrate, and a second plurality of light emitting elements positioned on the substrate, ... | 01/05/2010 |
| 7637640 | Two-layered optical plate An exemplary optical plate includes a transparent layer and a light diffusion layer. The transparent layer includes a light input interface and a light output surface opposite to the light input interface. A plurality of micro-protrusions formed on the light output ... | 12/29/2009 |
| 7635193 | Optical plate and backlight module using the same An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of spherical protrusions, a diffusion layer, and at least one lamp-receiving portion. The bottom surfac... | 12/22/2009 |
| 7631980 | Luminaire and a lighting panel for a luminaire A luminaire comprising a light source and a lighting panel in front of the light source, wherein light radiation from the light source is transmitted through the lighting panel before it leaves the luminaire. The material of the lighting panel is transparent, and th... | 12/15/2009 |
| 7628502 | Light controlling sheet and surface light source device A light controlling sheet is provided in a surface light source device including a light source portion. The light controlling sheet includes an outgoing light side lens portion having multiple unit lenses arranged to project toward the outgoing light side, and tran... | 12/08/2009 |
| 7568820 | Light-controlling sheet and surface illuminant unit The present invention is a light-controlling sheet for making light emitted from light sources uniform and/or converging the light. The light-controlling sheet includes a lens part having a large number of rod-like unit lenses arranged in parallel, with a lens surfa... | 08/04/2009 |
| 7553050 | Optical sheet, backlight assembly and display device having the same An optical sheet includes a base film and a light-concentrating member. The light-concentrating member includes light-concentrating protrusions and is disposed on the base film. Each of the light-concentrating protrusions includes first to fourth surfaces. The first... | 06/30/2009 |
| 7527398 | Flat panel display A flat panel display can include a transparent substrate, a light emitting device formed on a surface of the transparent substrate, and a prism sheet formed on the other surface of the transparent substrate and having a plurality of polygonal protruding members havi... | 05/05/2009 |
| 7510308 | Diffusing sheet, surface light source device, and transmission type display The present invention provides a diffusing sheet, a surface light source device, and a transmission type display, that can attain uniform illumination so that the brightness of light on the display screen appears uniform regardless of the position from which the dis... | 03/31/2009 |
| 7497598 | Light diffusion film, surface light source unit, and liquid crystal display A light diffusion film 1 according to the present invention comprises a transparent substrate 11 and a light-diffusing layer 15 provided on the transparent substrate 11, and the light-diffusing layer 15 comprises an ionizing radiat... | 03/03/2009 |
| 7490963 | Diffusion plate and backlight module using the same A diffusion plate (20) includes at least two diffusion units (21), each diffusion unit including at least one connecting portion (23). The connecting portions (23a, 23b) of each two adjacent diffusion units mate with ... | 02/17/2009 |
| 7478930 | Backlight unit with an oxide compound-laminated optical layer A backlight unit includes a substrate, a plurality of light sources arranged on the substrate in a spaced-apart relationship with one another for irradiating lights, a total reflection layer for upwardly reflecting the lights irradiated from the light sources, and a... | 01/20/2009 |
| 7465072 | Backlight unit and liquid crystal display device using the same A backlight unit includes: at least one lamp; and a plurality of optical sheets on the at least one lamp, the plurality of optical sheets having a micro-lens sheet. ... | 12/16/2008 |
| 7465073 | Backlight unit and liquid crystal display device having the same A backlight unit of an LCD device is provided. The backlight unit includes a light emitting unit, a light guide plate, a reflection plate and a light scattering unit. The light emitting unit has a passive light emission lamp that generates green light and a self-lig... | 12/16/2008 |
| 7458704 | Optical element and illuminating device The present invention provides an optical element and an illuminating device. The optical element includes: an incident surface; and an emitting section formed on an opposite side to the incident surface. The emitting section includes a plurality of protrusions. Whe... | 12/02/2008 |
| 7445358 | Light guide plate and a planar lighting device using the same A light guide plate of the invention has a plurality of unit light guide plates that are formed of a transparent resin material and which are joined together. Each of the unit light guide plates has a flat rectangular light exit surface and a back surface that is op... | 11/04/2008 |
| 7416309 | Optical film having a surface with rounded structures The present disclosure is directed to optical devices including a light source and an optical film having a first surface disposed to receive light from the light source and a second surface facing away from the light source. The second surface includes a two-dimens... | 08/26/2008 |
| 7403691 | Light guide plate having high-density dots A light guide plate (10) includes a pair of opposite incidence surfaces (101, 103), an emission surface (108) and a bottom surface (109) opposite to the emission surface. A plurality of dots (11) is distributed on the bottom surfac... | 07/22/2008 |
| 7401962 | Light deflection element and light source apparatus using the same A surface light source apparatus includes a primary light source (1), an optical guide (3) for guiding light emitted from the primary light source and having a light incoming surface (31) and a light outgoing surface (32), a light deflect... | 07/22/2008 |
| 7397984 | Light guide screen louver device In a particular embodiment, the louver device includes a transparent layer of material having a first surface and, parallel thereto, a second surface. A plurality of shaped louver members are disposed within the transparent layer of material. The shaped louver membe... | 07/08/2008 |
| 7387418 | Illumination system for displays, especially in vehicles, and cover assembly for such illumination system The present invention relates to an illumination system for displays, especially in vehicles, comprising a base (3) on which at least a first light source (4) is provided to emit light, a cover (6), which is provided at a distance from the base ... | 06/17/2008 |
| 7384173 | Brightness enhancement article A brightness enhancement article for use in an optical system is disclosed. The brightness enhancement article has a structured surface including light directing protrusions. The light directing protrusions include a peak and a base, the peak having a rounded contou... | 06/10/2008 |
| RE40355 | Back light assembly for use with back-to-back flat-panel displays The present invention features a system for uniformly distributing luminance and a high degree of collimation from a back light module for flat-panel, liquid crystal displays (LCDs) simultaneously. A constant and uniform luminance output of the back light module in ... | 06/03/2008 |
