| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 362620000 | Prism | 39 |
| 20080225554 | BACK LIGHT MODULE - A back light module includes a light guide plate, a light emitting unit, and a prism sheet. The light guide plate has a bottom surface, a light output surface opposite to the bottom surface, a light incident surface connected to the bottom surface and the light output surface, and multiple cambered diffusion portions on the light output surface. The cambered diffusion portions are paralleled to one another. Each cambered diffusion portion has a cambered surface. The light emitting unit is disposed near the light incident surface. The prism sheet is disposed over the cambered diffusion portions and has multiple linear prisms protruding toward the light guide plate. The linear prisms are paralleled to one another. The stretching direction of the linear prisms is substantially perpendicular to that of the cambered diffusion portions. Backlight uniformity can be improved and the viewing angle of the backlight system also increases in specific direction. | 09-18-2008 |
| 20080225555 | LIGHT GUIDE PLATE, DISPLAY APPARATUS AND ELECTRONIC DEVICE - A light guide plate for uniformly emitting light from an entire face using light taken in through an end face, includes: a parent prism formed on a face opposing to a light emitting face of the light guide plate; and a child prism formed on an inclined face of the parent prism on the end face side of the light guide plate; wherein the parent prism and the child prism convert the advancing direction of the light taken in through the end face so that the light is emitted from the light emitting face. | 09-18-2008 |
| 20080232137 | Light guide plate, surface light source device and image display - A light guide plate has an incidence face provided by a side end face, emission face and back face. The incidence face has first and second end edges meeting the emission face and the back face respectively. First range N | 09-25-2008 |
| 20080239756 | Backlight assembly of liquid crystal display - A backlight assembly of an LCD is provided. The backlight assembly includes a lamp for generating a light, a light guide plate disposed at a side of the lamp, for guiding the light, and a diffusion sheet and a prism sheet disposed on the light guide plate, for enhancing efficiency of the light outputted from the light guide plate, wherein the prism sheet comprises a body part and a plurality of protrusion parts each having a concavely inclined surface formed on the body part. | 10-02-2008 |
| 20080259644 | SURFACE ILLUMINANT EQUIPMENT - A plurality of convex strip portions are formed on a front surface (or a back surface) of a light guiding plate, extending in a direction from a light incidence plane to an opposite side surface. A concave portion is formed on a side surface of each convex strip portion. An inner wall of the concave portion is formed from at least two flat planes inclined with respect to three axial directions orthogonal to each other (X, Y and Z axial directions), respectively. Thereby, damage to the surface illuminant equipment such as a light guiding plate due to the interference between a back surface and units disposed on the back surface of the light guiding plate is prevented, while preventing a linear part with relatively low luminance from being viewed from the front surface of the light guiding plate. | 10-23-2008 |
| 20080273352 | Surface Light Source Device and Liquid Crystal Display Device Using the Same - A protecting sheet | 11-06-2008 |
| 20080285309 | Light guide plate and backlight module having the same - A light guide plate has a light-receiving surface, a light-emitting surface, and a light-reflecting surface. Multiple first arc-shaped longitudinal structures are arranged on the light-receiving surface with their longitudinal directions being substantially parallel with each other. Multiple second arc-shaped longitudinal structures are arranged on the light-emitting surface with their longitudinal directions being substantially parallel with each other. The light-reflecting surface is shaped to form a plurality of prismatic structures, and a luminance-adjusting structure is formed on part of the light-reflecting surface near the point light source and interlaced with the prismatic structures. | 11-20-2008 |
| 20090016080 | Planar Lighting Apparatus - Higher brightness of a planar lighting apparatus is promoted by improving close contact between a light-emitting face of an LED and a side end face of a light guide plate. | 01-15-2009 |
| 20090034294 | Light Guide for Surface Light Source Device and Surface Light Source Device - A light guide ( | 02-05-2009 |
| 20090034295 | FRONT LIGHT UNIT AND FLAT PANEL DISPLAY APPARATUS HAVING THE SAME - Provided is a front light unit and a flat panel display apparatus that includes the front light unit. The front light unit includes a light source, a light guide plate that guides light emitted from the light source and comprises a rear surface through which the guided light is emitted and a front surface facing the rear surface, and a plurality of prism shape structures which are provided in one unit with the light guide plate and emits light totally reflected from the front surface of the light guide plate. The light guide plate and the prism shape structures are formed of a transparent elastic material. | 02-05-2009 |
| 20090040788 | LIGHT GUIDE PLATE AND BACKLIGHT MODULE USING THE SAME - A light guide plate has a bottom surface including flat surfaces (FSs) and a plurality of prism patterns (PPs) disposed alternately with the FSs, a light emitting surface (LES) and a light incident surface (LIS). Each FS is at a first distance respectively from the LES and the first distances gradually decrease along a direction away from the LIS. Each PP has a first slanted surface (FSS) and at least a groove having a second slanted surface (SSS) and a third slanted surface (TSS). The two opposite sides of the FSS are spaced out a second distance apart. The two opposite sides of the SSS are spaced out a third distance apart. The specific value of dividing a first orthogonal projection of the second distance on an axis perpendicular to the FSs by a second orthogonal projection of the third distance on the axis is between 0.5 and 1.5. | 02-12-2009 |
| 20090073723 | PRISM SHEET AND BACKLIGHT MODULE USING THE SAME - An exemplary prism sheet includes a transparent main body. The main body includes a first surface, a second surface opposite to the first surface, a plurality of micro-depressions formed in the first and second surfaces respectively. Each micro-depression has four sidewalls connected in turn. A transverse width of each sidewall of each micro-depression progressively decreases with increasing distance from its bottom surface that are coplanar with one of the first and second surfaces of the transparent main body. A backlight module using the present prism sheet is also provided. | 03-19-2009 |
| 20090073724 | INPUT DEVICE WITH ILLUMINATION FUNCTION - An input device having an illumination function includes a wiring board having a predetermined wiring pattern thereon containing a fixed contact point, a light-emitting diode, a planar light-guide plate for guiding emission light from the light-emitting diode in a direction along a surface, a metal dome serving as a movable contact, and a cover sheet having an actuator thereon to be used to press the metal dome. The wiring board is manufactured of a white translucent material. The planar light-guide plate includes a plurality of prism grooves arranged in stripes on the surface thereof, and on a predetermined portion thereof a through-hole for housing the metal dome. An air layer is arranged between the prism bearing surface of the planar light-guide plate and the cover sheet. The metal dome | 03-19-2009 |
| 20090080218 | PRISM SHEET AND BACKLIGHT MODULE USING THE SAME - An exemplary prism sheet includes a transparent main body. The main body includes a first surface, a second surface and a plurality of spherical micro-depressions and a plurality of triangular pyramidal micro-depressions. The first surface and the second surface are on opposite sides of the main body. The spherical micro-depressions are formed in the first surface and the triangular pyramidal micro-depressions are formed in the second surfaces. A backlight module using the present prism sheet is also provided. | 03-26-2009 |
| 20090080219 | PRISM SHEET AND BACKLIGHT MODULE USING THE SAME - An exemplary prism sheet ( | 03-26-2009 |
| 20090080220 | Prism sheet and backlight module using the same - An exemplary prism sheet includes a transparent main body. The transparent main body includes a surface and a plurality of micro-depressions integrally formed in the surface. Each of the micro-depressions has connecting sidewalls. A transverse width of each sidewall progressively decreases with increasing distance from the surface thereof. A backlight module using the present prism sheet is also provided. | 03-26-2009 |
| 20090091949 | ALL-IN-ONE TYPE LIGHT GUIDE PLATE AND BACKLIGHT APPARATUS EMPLOYING THE SAME - An all-in-one light guide plate, a backlight apparatus employing the same, and a method of manufacturing the all-in-one light guide plate are provided. The all-in-one light guide plate has a structure in which a plurality of protrusion type refractive elements for outputting light are integrated into the light guide member. It is possible to improve optical properties by more densely arranging the refractive elements with distance from the light source. | 04-09-2009 |
| 20090109703 | Light guide plate and side-emitting backlight module having the same - A light guide plate and a side-emitting backlight module having the same are disclosed. The light guide plate includes a transparent substrate, a plurality of prisms and a plurality of condensing lenses. The prisms are arranged side by side on one surface of the transparent substrate. The condensing lenses are disposed between two adjacent prisms, and distributed from sparsely to densely along a direction of a crest line of each of the prisms. | 04-30-2009 |
| 20090122576 | BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE - A prism sheet (an optical path changing portion and a light gathering portion) ( | 05-14-2009 |
| 20090129120 | LIGHT GUIDE PLATE WITH COMPENSATED EMISSION LIGHT FIELD - A light guide plate includes a light incidence surface, a light reflection surface, and a light emission surface. The light emission surface forms a plurality of light-guiding structures, which are extended in a direction substantially perpendicular to a lengthwise direction of a light source. The light-guiding structures have a substantially V-shaped cross-section and, among the light-guiding structures, those arranged in opposite endwise zones of the light emission surface in the lengthwise direction have an irregular V-shaped cross-section defined by a long inclined side, which faces endwise, and a short inclined side. The long and short sides respectively form first and second inclined angles with respect to the light emission surface and the first included angle is smaller than the second included angle and the first inclined angle gets smaller with the associated light-guiding structure located closer to the lengthwise end. | 05-21-2009 |
| 20090147537 | Light Guide Member, Planar Lighting Device Using the Same, and Rod-Type Lighting Device - A transparent light guide member comprising a first light guide unit in the form of a transparent plate having a rectangular light emitting plane and a parallel groove formed on a rear surface located opposite from the rectangular light emitting plane and parallel to one side of the rectangular light emitting plane; and a second light guide unit, which is transparent, having a columnar external shape to be accommodated in the parallel groove and containing light-scattering particles. Let Φ be the scattering cross section of the particles, L | 06-11-2009 |
| 20090161386 | OPTICAL FILM AND BACKLIGHT MODULE USING SAME - An optical film has at least one surface forming a dense and alternate arrangement of light condensation structures. The light condensation structures have a pyramid configuration having a major axis and a minor axis. Each light condensation structure forms four differently oriented light emission faces, so that the light condensation structure simultaneously condenses lights that are in vertical direction and horizontal direction with respect to the optical film and then emits the condensed lights. In this way, when the optical film is applied to a backlight module, the number of the optical film required by the backlight module to realize desired condensation of light can be reduced to thereby lower the manufacturing costs of the backlight module. | 06-25-2009 |
| 20090161387 | Light Guide Plate and Surface Lighting Device - A light guide plate includes a transparent body, a plurality strip-shaped light diffusion structures and a plurality of strip-shaped light-collecting structures. The transparent body has a first light exit surface and a light incident surface adjacent to the first light exit surface. The strip-shaped light diffusion structures convexly extend from the first light exit surface of the transparent body and each of the strip-shaped light diffusion structures has a second light exit surface distant from the first light exit surface. The strip-shaped light-collecting structures correspond to the strip-shaped light diffusion structures, and each of the strip-shaped light-collecting structures convexly extends from the second light exit surface of the corresponding strip-shaped light diffusion structure. A cross-sectional shape of each of the strip-shaped light-collecting structures is approximately symmetrical with respect to a central normal plane of the corresponding second light exit surface. Furthermore, a surface lighting device using the above-mentioned light guide plate is also provided. | 06-25-2009 |
| 20090190373 | ILLUMINATION DEVICE WITH BUILT-IN LIGHT COUPLER - The invention comprises devices and methods for coupling a light source to a display illumination device. In one embodiment, an illumination device includes a light guide comprising a front surface, a back surface, a light coupling section configured to receive optical energy from a light source in to the light guide through said front surface or said back surface at an angle about normal to the optical energy receiving surface, and further configured to direct light through said light guide, and a light turning section configured to redirect out of the light guide at least a portion of the light received from said light coupling section, said redirected light at an angle about normal to the optical energy receiving surface. | 07-30-2009 |
| 20090290379 | SURFACE LIGHT-EMITTING DEVICE AND AUTOMATED TRANSACTION APPARATUS USING THE SAME - A surface light-emitting device includes a transparent plate having two main surfaces and a light source. The light source is arranged adjacent to a side of the transparent plate so that the light source radiates light to the inside of the transparent plate from the side of the transparent plate. One main surface of the transparent plate is formed with a plurality of cone-shaped dimples, which reflect radiated light toward the other main surface of the transparent plate. The surface light-emitting device may further include a black sheet arranged adjacent to one main surface of the transparent plate formed with the plurality of cone-shaped dimples. The surface light-emitting device can be used as a guide device for an input/output interface unit of an automated transaction apparatus. | 11-26-2009 |
| 20090323372 | Device and display device using the same - Provided is a lighting device that inputs a light from a light source from a side surface of a light guide body, and outputs the light from an upper surface of the light guide body, in which a recess is formed on a light input surface of a light guide plate so as to face the light source, and a paraboloid extending in a radial pattern in a light output direction from a light output part of the light source is connected to the light input surface. Prisms arranged on a light output surface of the light guide body are disposed up to an area closest to the light source wherever possible. With the above-mentioned configuration, an output of the light of components perpendicular to the light output surface of the light guide body remarkably increases, and brightness of the lighting device can be enhanced without using a prism sheet. | 12-31-2009 |
| 20100014318 | Light guide panel, display including the same, and associated methods - A light guide panel includes a lateral side configured to transmit light to an interior of the light guide panel, a rear side configured to reflect light to the interior of the light guide panel, and a front side configured to emit light from the interior of the light guide panel, wherein the rear side includes a repeating pattern of regions, each region having a plurality of wedge-shaped rear prisms disposed therein, and the wedge-shaped rear prisms include at least one of a side having a predetermined radius of curvature and a side having a point of inflection. | 01-21-2010 |
| 20100027294 | OPTICAL SHEET AND METHOD OF MANUFACTURING THE SAME - An optical sheet includes a base film in which light is incident from a lower side, a plurality of prism patterns and a diffusion member. The prism patterns are protruded to be spaced apart from each other on the base film to enhance the front luminance of light incident from the lower side of the base film. The diffusion member is disposed between prism patterns to have a diffusion surface in parallel with the base film. The diffusion member includes a plurality of diffusion dots capable of enhancing the luminance uniformity of light incident from the lower side of the base film. Thus, front luminance and luminance uniformity may be enhanced due to a juxtaposition of the prism patterns and the diffusion portion, and the viewing angle of the LCD device may be enhanced. | 02-04-2010 |
| 20100046248 | OPTIC FILM AND BACKLIGHT MODULE USING SAME - An optic film includes a substrate and a condensation layer. The substrate has a light incidence surface and a light emission surface. The light incidence surface is treated to form a roughened frosted surface. The condensation layer is arranged on the light emission surface of the substrate and forms prism-like micro-structures. With the light incidence surface of the substrate being directly subjected to knurling or sand blasting to form the roughened frosted surface, when light enters the substrate through the light incidence surface, the light is diffused first by the frosted surface of the light incidence surface and is then subjected to condensation by the condensation layer, whereby when the optic film is applied to a backlight module, the optic film can effect both diffusion and condensation of light, so that the number of optic films used in the backlight module can be reduced. | 02-25-2010 |
| 20100046249 | OPTIC FILM AND BACKLIGHT MODULE USING SAME - An optic film includes a body and a condensation layer. The body is formed by stacking a plurality of substrates made of different materials. By means of the different physical characteristics of the different materials, the optic film realizes excellent optic performance. Also provided is a backlight module using the optic film. | 02-25-2010 |
| 20100073961 | LIGHT GUIDE WITH DUAL REFLECTING SURFACES TO MAXIMIZE LIGHT REFLECTION AND ENHANCE UNIFORMITY OF EMITTED LIGHT - A light guide for a linear light source comprising dual light reflecting surfaces, a v-shaped light reflecting surface for maximizing light output and an asymmetrical saw-toothed light reflecting surface for enhancing the uniformity of emitted light is disclosed. The v-shaped light reflecting surface comprises two light reflecting surfaces at 90°. The asymmetrical saw-toothed light reflecting surface comprises notches and ridges with increasing gradient from the light entry end of the light guide to the opposite end. The asymmetrical saw-tooth has a constant pitch and constant saw-tooth angle. The light guide further comprises an apex cut-off surface and a bottom cut-off surface at the light entry end of the light guide to prevent light loss at the light entry point further enhancing the light channeling performance. | 03-25-2010 |
| 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 |
| 20100128495 | LIGHT GUIDE PLATE AND BACKLIGHT MODULE - A light guide plate including a body and a plurality of prism microstructures is provided. The body has a bottom surface, a light emitting surface opposite to the bottom surface, and a plurality of side surfaces. The light emitting surface has a central area and at least one peripheral area outside the central area. The prism microstructures are disposed on the light emitting surface and the bottom surface. The prism microstructure disposed on the light emitting surface includes a plurality of first prism microstructures in the central area and a plurality of second prism microstructures in the peripheral area. A top angle θ | 05-27-2010 |
| 20110002144 | INTEGRATED OPTICAL SHEET AND OPTICAL DEVICE HAVING THE SAME - Provided are an integrated optical sheet and an optical device having the same, and more particularly, an integrated optical sheet and an optical device having the same, in which a diffuser film and a prism film are integrated in a thin structure. The optical sheet includes a light collector including a plurality of prism elements extending in a first direction, and an anisotropic diffuser including a plurality of optical elements extending from a surface of the light collector opposite to the surface having the prism elements in a second direction different from the first direction. One part including downward prism elements and scattering elements is formed at one surface and the other part including diffusion elements is formed at the other surface to integrate a conventional diffusion film to a horizontal prism film, providing a thin optical sheet. | 01-06-2011 |
| 20110051460 | BACKLIGHT - A backlight is provided for illuminating an at least partially transmissive display. The backlight includes a light source. A light guide receives the light from an edge surface and guides the light by total internal reflection. The light extracted from the lightguide has an angular emission profile such that when incident on a prism film, collimated light is produced. | 03-03-2011 |
| 20110122653 | OPTICAL PLATE WITH MICRO-STRUCTURES AND BACKLIGHT MODULE USING SAME - An exemplary optical plate includes a base and an array of micro-structures. The base includes a first surface and a second surface opposite to the first surface. The micro-structures are provided at the first surface. Each micro-structure includes a base surface substantially coplanar with the first surface of the base and two side surfaces. The base surface has an approximately olive-shaped profile enclosed by two arc-outlines. The two side surfaces extend obliquely from the two arc-outlines and intersect at a ridge of the micro-structure. | 05-26-2011 |
| 20130114300 | BACKLIGHT UNIT AND DISPLAY APPARATUS HAVING THE SAME - A backlight unit of a display apparatus, the backlight unit includes a light source unit disposed on at least one edge of a display panel; and a light guide plate disposed at rear of the display panel. The light guide plate includes a first pattern part including a plurality of first pattern lines formed on a lower surface of the light guide plate, and which extend perpendicularly to a transmission direction of the radiated light, and which totally reflect the radiated light to an upper surface of the light guide plate, and a second pattern part including a plurality of second pattern lines formed on the upper surface of the light guide plate, and which extend parallel with the transmission direction of the radiated light, and which guide light transmitted in the light guide plate to travel and exit along the second pattern lines. | 05-09-2013 |
| 20140293653 | COMPOSITE LIGHT GUIDE PLATE, APPARATUS AND METHOD FOR MANUFACTURING SAME - A composite light guide plate comprises a light guide plate and a prism structure adhering to the light guide plate. The light guide plate comprises a light emitting surface. A plurality of first microstructures is formed on the light emitting surface. The prism structure is adhered on the light emitting surface of the light guide plate. The prism structure comprises a first surface in contact with the light emitting surface. A plurality of second microstructures is formed on the first surface. Each second microstructure is corresponding to and in tight contact with one of the first microstructure. An apparatus and a method for manufacturing the composite light guide plate is also provided. | 10-02-2014 |
| 20150055373 | LIGHT GUIDE PLATE AND METHOD FOR MANUFACTURING SAME - A light guide plate includes a light incident surface, a bottom surface connected to the light incident surface, and a light output surface facing away from the bottom surface. The light output surface is a roughened surface. A number of microstructures are formed on the light output surface. A method for making the light guide plate is also described. | 02-26-2015 |
