Abstract: A backlight assembly is suitable for emitting uniform flat light. The backlight assembly causes light from a lamp to travel in the form of flat light using a light guide plate disposed to have one plane facing the lamp. The light guide plate includes one or more rounded portions at one or more edges of an incident plane thereof onto which the light from the lamp is incident, and the one or more rounded portions cause the light from the lamp to travel into the light guide plate.

Abstract: A manufacturing method of an optical member includes forming an optical film which has a first glass transition temperature and includes a pattern formed on a surface of the optical film, and an optical plate which has a second glass transition temperature that is lower than the first glass transition temperature, disposing the optical film and the optical plate adjacent each other so that the pattern faces the optical plate, pressurizing the optical film and the optical plate while heating the optical plate to the second glass transition temperature or higher, and forming the optical member by the pressurizing and the heating.

Abstract: On the side surface of an optical guide plate (104), an engaging protrusion (105) is formed for fixing the optical guide plate (104) on to a frame (101) by fitting the optical guide plate in a recessed portion formed on the frame. The light emitted from an LED (107) enters the optical guide plate (104) from a light-incident end surface and travels in the optical guide plate (104) while spreading in a fan-shape. The engaging protrusion (105) is formed outside the outgoing-angle range of the beam (109) spreading in the fan-shape, thereby preventing occurrence of bright line caused by reflection of light at the corner portion of the base of the engaging protrusion (105).

Abstract: A mobile terminal device includes a display module, a holder holding the display module; and a light guide plate disposed on a display side of the display module and held by the holder, the light guide plate including a transparent part and a diffusing part integrated with the transparent part into one structure, the transparent part transmitting light in an area on a display surface of the display module, the diffusing part diffusely reflecting light in an area around the display surface.

Abstract: To provide a liquid crystal display module that eliminates the loss of light emitted from a light source. The present invention provides a liquid crystal display module including: a liquid crystal display panel; and a backlight, wherein the liquid crystal display panel includes an upper polarization plate and a lower polarization plate, the backlight is configured by a light source and a light guide plate, the light guide plate is configured in such a manner that the thickness of an incident face where light of the light source enters is larger than that of a portion opposed to the lower polarization plate, a light shielding member and a reflection member arranged on the light shielding member are provided at portions, of the liquid crystal display panel, corresponding in the upper direction to the incident face of the light guide plate, and the reflection member is formed along the light guide plate.

Abstract: A light guide plate including a first surface, a second surface, a first light incident surface, and a first protruding portion is provided. The second surface is opposite to the first surface, and the first light incident surface connects the first surface and the second surface. The first protruding portion is disposed on a junction between the first light incident surface and the first surface. The first protruding portion has a first curved protruding surface connected with the first surface and facing away from the second surface. A light source module is also provided.

Abstract: A surface light emitter comprising a surface-emitting device is notably increased in the front brightness of light outputted from the surface-emitting device. In the surface light emitter comprising the surface-emitting device 20 and a light control sheet 10, a repetitive concavo-convex pattern of trapezoidal from in section is formed at least on one side of the light control sheet and has planar portions 12a at distal ends of projections of the concavo-convex pattern tightly bonded to an output surface 21a of the surface-emitting device. The light control sheet satisfies a condition 0.75>D>4[(sin ??1/n)2+0.

Abstract: A linear light guiding module is provided, which includes a linear light guiding body, a plurality of light emitting bodies, a plurality of heat sinks, and a plurality of fans. With the linear light guiding body, the light emitting bodies, and the heat sinks linearly arranged, or with the fans further integrated, the linear light guiding module of the present invention has a small size and an effective heat-dissipation effect. Since only one linear light guiding module needs to be disposed on one side of a light guide plate, the linear light guiding module can be used in large-sized liquid crystal display panels. Moreover, the number of the linear light guiding modules used is decreased while the requirements for high brightness and brightness uniformity can still be met, so the cost can be reduced.

Abstract: A light guide plate includes a first surface, a second surface opposite the first surface, a light incident surface, and a plurality of lenticular lenses and microstructure assemblies. The light incident surface is connected with the first surface and the second surface, and light beams enter the light guide plate by the light incident surface. The lenticular lenses are disposed on the first surface. Each of the lenticular lenses is suitable to deflect imaginary light beams that are incident on the first surface in a predetermined direction to form a focus region on the second surface. The microstructure assemblies are disposed on the focus regions for guiding the light beams incident on the focus regions. A plurality of planar regions are formed on the second surface. Each of the planar regions is disposed between two adjacent microstructure assemblies and suitable for totally reflecting the light beams incident thereon.

Abstract: There is provided a spread illuminating apparatus including an LED, a light guide plate and a flexible printed circuit board on which the LED is mounted, wherein the light guide plate includes: a light entrance end surface at which the light source is disposed; a light emitting portion from which light emitted from the light source and introduced into the light guide plate exits out in a spread manner; a slope portion which is disposed between the light entrance end surface and the light emitting portion and which has a thickness decreasing toward the light emitting portion; and a seat block disposed at the slope portion and configured to fixedly receive the flexible printed circuit board. In the spread illuminating apparatus, the length of the slope portion is substantially 1.78 times as large as the largest thickness of the slope portion.

Abstract: A device for guiding and mixing light comprising of a light guide, at least a first set of light emitting elements in a first layer and at least a second set of light emitting elements in a second layer. Each of the light emitting elements being arranged to emit light of at least a first predetermined frequency. The second layer extending in a second geometrical plane different from a first geometrical plane of the first layer for producing a uniform light output from the aggregate of the constituting frequencies.

Abstract: A light guide member of the present invention is made of a light transmitting material. The light guide includes a light emitting surface 13, which extends in direction x and includes a lens surface 31 for converging light in direction y. The light guide also includes a light incident surface 11 provided at one of the ends spaced from each other in the direction x. The light emitting surface 13 includes a transitional region 13a adjacent to the light incident surface 11, where the transitional region includes the lens surface 31 and a round pillar surface 32. In the transitional region 13a, the lens surface 31 becomes less dominant in area as proceeding in the direction x toward the light incident surface 11.

Abstract: A light guide plate includes a light source, a first light guide area and a second light guide area. The first light guide area and the second light guide area are formed by a single light guide plate. The first light guide area defines a notch, and the light source is positioned in the notch. A plurality of microdots are provided on one side of the second light guide area, and the microdots uniformly guiding light from the light source to the second light guide area.

Abstract: A light guide device is provided in an embodiment of the invention. The light guide device comprises a light guide plate and a light source provided on a side surface of the light guide plate. A light guide strip is provided on a side surface of the light guide plate intersecting with the side surface provided with the light source. A side surface of the light guide strip facing the light guide plate is a light exit surface of the light guide strip, a side surface of the light guide strip opposite to the light exit surface is a reflective surface of the light guide strip, and an end surface of the light guide strip adjacent to the light source is a light entrance surface of the light guide strip.

Abstract: A light source unit has a main body portion and light emitting elements, and the main body portion includes wall surfaces which constitute reflecting planes which are inclined so as to define a rectangular projecting port, and an inclination of the wall surfaces lying on longer member sides constitutes an inclined angle which is smaller than an inclination of the wall surfaces lying shorter member sides of the projecting port, the wall surfaces on the shorter member sides being each formed into a trapezoidal shape.

Abstract: Disclosed are various embodiments of a light guide and corresponding ambient light sensor, computing device and backlit display for use in a portable electronic device. The various embodiments of the light guide are configured to permit ambient light to be collected efficiently and accurately over wide angles of incidence, even under low-ambient-light conditions. The efficient and accurate collection of ambient light by the various embodiments of the light guide disclosed herein may be employed to more accurately control the amount and degree of backlighting provided to a backlit display, which in turn can be used to conserve valuable battery power in a portable electronic device.

Abstract: Illumination assemblies, components, and related methods are described. An illumination assembly is provided that comprises a plurality of illumination tiles each having a light emission surface. The plurality of illumination tiles are arranged in a two-dimensional array. The illumination tiles are constructed and arranged so as to provide a substantially contiguous illumination surface comprising the light emission surfaces of the plurality of the illumination tiles. Each illumination tile is illuminated by at least one solid state light-emitting device. A method of local dimming an illumination assembly of a display (e.g., LCD) backlight unit is also provided.

Abstract: A first light guide plate of a light-emitting element is formed by a plurality of strip-shaped light guide bodies arranged in parallel with each other, where each strip-shaped light guide body has a light incident surface on which light from a light source is incident, and a light-emitting surface from which light from the light incident surface is emitted, and on which a plurality of prisms are formed. A second light guide plate of the light-emitting element is positioned so as to face the light-emitting surface side of the first light guide plate, has prisms formed on a surface of the first light guide plate side in a shape that meshes with a shape of the prisms of the first light guide plate, and is formed by a fewer number of light guide bodies arranged in parallel than the strip-shaped light guide bodies.

Abstract: A sheet-shaped lightguide member includes a lightguide sheet having a first surface, a second surface opposite the first surface, and a peripheral edge surface a part of which is defined as a light entrance surface. At least one of the first and second surfaces has microscopic irregularities over the whole area thereof. The lightguide member is provided with a lightguide layer on a region of the at least one of the first and second surfaces. The lightguide layer defines a lightguide region in the at least one of the first and second surfaces retaining an exposed region as a light-emitting region. The lightguide layer is configured to guide the light received through the light entrance surface toward the light-emitting region.

Abstract: In a light guide plate 63, a light introducing unit 65 having a thickness larger than that of a light guide plate body 64 is provided at an end of the light guide plate body 64. A point source of light 62 is placed so as to face an end face of the light introducing unit 65 (a light incident end face 66). The light introducing unit 65 has a protruding portion in a shape of a half of a frustum of a cone protruding from a surface on the light guide plate 63 to have a large thickness, and the protruding portion has an outer perimeter surface forming an inclined surface 67. On the inclined surface 67, V-groove structures 68a are arranged along the outer perimeter surface of the protruding portion to configure a directivity conversion pattern 68.

Abstract: An instrument cluster for use in a passenger vehicle includes a translucent sheet. The sheet is located in front of at least one of an appliqué, a display face, and a pointer of the instrument cluster. Indicia are embedded in the translucent sheet. The indicia has a first visual state and a second visual state, the indicia being more noticeable in its second visual state than in its first visual state.

Abstract: A light guide assembly includes a light source and a light guide plate. A through hole is defined in the light guide plate to receive the light source. A plurality of spaced apart apertures is defined in the light guide plate to allow the light rays to from the light source to be transmitted to illuminate the distal end of the light guide plate.

Abstract: Lighting system for a data display device (12, 20), wherein said lighting system includes a light guide (1; 22) including an area (2; 26) into which the light produced by at least one light source (4) is injected, said injection area (2; 26) is extended by an area (8; 24) for extracting the light propagating inside the guide (1; 22) to light the display device (12; 20), said extraction area (12, 20) is provided with light extractors (10), the light guide (1; 22) takes the form of a loop closed on itself at the light injection area (2; 26) to allow the light originating from the light source (4) and which was not extracted from the light guide (1; 22) in the extraction area (8; 24) to continue to travel inside the light guide (1; 22) and to return to the starting point thereof at the light injection area (2; 26), the data display device (12; 20) is arranged inside the loop, and the lighting system is characterized in that the light is extracted from the light guide (1; 22) in a perpendicular direction to a pla

Abstract: 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.

Abstract: An exemplary light source module includes a flexible printed circuit board (FPCB), a number of light emitting diodes (LEDs), and a light guide plate (LGP). The LEDs are mounted on the PCB, which is capable of switching each of the LEDs on and off. The LGP includes a light input surface and a number of light output surfaces. The light input surface is opposite to the LEDs. The LEDs face the light input surfaces, and at least one light guide structure is defined at the light input surface so that a majority of light beams from each LED pass substantially perpendicularly through a corresponding portion of the at least one light guide structure and exit from a corresponding light output surface.

Abstract: It is an object to provide a planar illumination device that is thin and light weight, and can emit uniform illumination light with little brightness unevenness and can be enlarged in size.

Abstract: A dichroic filter column (4) is provided on an incident surface (11). At least one of two end parts of a light guide plate (1) in a thickness direction is divided into a plurality of light guide paths (6), in a width direction of the light guide plate (1) by a plurality of cutout grooves (5). Portions of the plurality of light guide paths (6) on an incident surface (11) side are aligned in accordance with positions of a plurality of dichroic filters (31), respectively. The plurality of dichroic filters (31) are elements of the dichroic filter column (4).

Abstract: A direct light type backlight unit and a color filterless liquid crystal display (LCD) apparatus employing the same are provided. The direct light type backlight unit includes: a substrate; a plurality of light-emitting devices inclined with respect to the substrate; a diffraction grating which diffracts light emitted by the plurality of light-emitting devices at different angles according to wavelength and thereby separates the light into a plurality of color beams; and a plurality of reflectors, each reflector disposed at a side of one of the plurality of light-emitting devices, which reduces the range of angles of light incident on the diffraction grating.

Abstract: A light guide plate includes a light discharge surface, a light diffusing surface, a light incident surface, and a plurality of scattering dots. The light diffusing surface is located opposite to the light discharge surface. The light diffusing surface has a first part and a second part. The first part is adjacent to a light source. The light incident surface intersects with the light discharge surface and the light diffusing surface. The scattering dots within the first part are arranged in the form of a plurality of concentric arcs, and the scattering dots within the second part are arranged in the form of a plurality of lines.

Abstract: A light guide plate according to the present invention includes an incident plane into which a light flux from a light source is incident, and a plurality of prisms having reflection planes reflecting the light flux incident from the incident plane, wherein the reflection planes of the plurality of prisms are extended to cross in a direction in which the light flux from the light source incident into the incident plane travels, and of the reflection planes of the plurality of prisms, the reflection plane of at least one prism closest to the incident plane is formed in a recess shape with respect to the incident plane. Thereby nonuniformity of backlight illumination can be improved and a display device can be uniformly and efficiently illuminated.

Abstract: One embodiment of the present invention is an optical component, including a first main surface and a second main surface wherein a plurality of two-dimensionally arranged first convex parts are arranged on the first main surface, each of the first convex parts being independent and an aspherical micro lens having an approximate semispherical shape or an approximate elliptic semispherical shape, or having a rounded tip, and a plurality of second convex parts of the height of which is lower than the height of the plurality of the first convex parts, the second convex parts comprising a lens extending in a one dimensional direction, the lens being arranged in one or two directions.

Abstract: This invention relates to a light guide plate and methods of manufacture. The light guide plate is suitable for use in a range of applications, particularly those which require backlighting for display units, for example, liquid crystal displays. The light guide plate comprises a combination of light guide layers and one or more scattering features.

Abstract: A light guide member laminated on the upper face of a luminous device mounting substrate on which a luminous device is mounted and which is for diffusing and guiding upward light emitted from the luminous device. The light guide member includes a light reflecting portion formed on the bottom face of the light guide member in an area other than an area near the luminous device, and a section in which a light reflecting portion is not formed on the bottom face of the light guide member at a position near the luminous device. Also disclosed is a planar light source device provided with the light guide member, and a display apparatus using the planar light source device.

Abstract: An optical plate has a first surface and a second surface opposite to the first surface. The first surface defines a plurality of elongated arcuate troughs therein. The second surface defines a plurality of triangular pyramid depressions and a plurality of hexagonal pyramid depressions therein. Each side of the triangular pyramid depressions borders three hexagonal pyramid depressions. A backlight module using the optical plate is also provided.

Abstract: A wireless communication device includes a plurality of light sources and a light guide including a light guiding element and a light shielding element. The light guiding element includes a plurality of guiding portions. Each guiding portion includes an expander having a first end corresponding to a respective one of the light sources and a second end opposite to the first end. The second ends of the expanders collectively form a continuous end surface. At least one cavity is defined between each two neighboring guiding portions. The light shielding element includes at least one shielding portion received in the at least one cavity to prevent light interference between the plurality of guiding portions.

Abstract: A light guide plate includes a light input surface, a light output surface adjoining the light input surface, and a reflecting surface opposite the light output surface. One of the light output surface and the reflecting surface defines a plurality of scattering microstructures. Each scattering microstructure includes a spherical protrusion having a substantially spherical surface, and a substantially ring-shaped groove defined around a periphery of the spherical protrusion. At least half of the spherical surface is as smooth as a mirror. A method for manufacturing the light guide plate and a backlight module using the light guide plate are also provided.

Abstract: A display comprises a block of optically transparent materials. Patterns are etched within the block. The patterns may be selectively illuminated by light directed into sides of the block. Barriers divide the block or layers within the block into segments. Patterns in different segments and/or in different layers of the block may be independently illuminated. In some embodiments the block is made up of a number of sheets of optically transmissive material. The block may permit viewing of display elements or other objects or things located behind the block. Patterns may be configured to scatter preferentially light of specific polarizations. Displays may be applied in a wide variety of applications including in vehicles, as displays on electronic devices and the like.

Abstract: Provided are a backlight assembly and a display device having the same. The backlight assembly includes; a light guide plate (“LGP”) having a light incident portion upon which light is incident and an opposite portion which is disposed substantially opposite to the light incident portion, a lower housing which accommodates the LGP therein, and at least one LGP fixing tape which fixes the LGP into the lower housing, wherein the at least one LGP fixing tape is interposed between the lower housing and lower surfaces of two opposite ends of the light incident portion of the LGP.

Abstract: A surface light source device includes a point source of light and a light guide plate causing light from the point source of light introduced from a light incident end face and emitted from a light emission surface to outside. The light guide plate is formed of a light introducing portion provided at an end of a light guide plate body. The point source of light is placed facing the light incident end face positioned at an end face of the light introducing portion. Along a region of the light introducing portion adjacent to the light guide plate body, a directivity converting portion is provided. The directivity converting portion is configured by arranging V-grooved directivity conversion patterns in an arc shape. A region of the light introducing portion has a thickness equal to that of the light guide plate body and has a surface positioned in the same plane.

Abstract: A liquid crystal display module includes a liquid crystal display panel and a backlight unit under the liquid crystal display panel. The backlight unit includes at least one light emitting diode. The liquid crystal display module further comprises a bottom frame surrounding the backlight unit. The bottom frame comprises a printed circuit board and the at least one light emitting diode is disposed on the printed circuit board. The liquid crystal display module also includes a main frame surrounding the liquid crystal display panel and a top frame surrounding a front edge of the liquid crystal display panel and combined with the bottom frame through the main frame.

Abstract: In various embodiments described herein, a display device includes a front illumination apparatus that comprises a first light guide disposed forward of an array of display elements, such as an array of interferometric modulators, to distribute light across the array of display elements. The light guide panel is edge illuminated by a light source positioned behind the array display elements. The light from such a light source is coupled to a second light guide disposed behind the array of display elements and positioned laterally with respect to the light source. The light in the second light guide is coupled into the first light guide using a small optical coupling element such as a turning mirror. In some embodiments the second light guide may comprise the backplate of the display device.

Abstract: A back cover for a backlight assembly capable of achieving a more compact a display apparatus includes a cover element, a line portion, and a plurality of point light sources. The cover element includes a metallic layer, and the cross-section of the cover element has an L-shape. The line portion is formed over the cover element. The point light sources are mounted on the surface of the cover element to receive a driving voltage from the line portion. A bottom cover portion of the cover element covers an opening portion. A side cover portion of the cover element faces the side wall. The point light sources mounted on the cover element emit light on a side surface of a light guide plate.

Abstract: An edge bar having features that discriminate between light propagating in one direction versus the opposite direction may be configured so as to couple light into a light guide while significantly mitigating against edge shadow artifact.

Abstract: This invention relates to a light guide (100). A first light guide portion (101) extending at least partly along the light guide is provided from conducting an incoming light along the first light guide portion. A second light guide portion (102) having a light out coupling structure is provided for coupling out an incoming light from the first light guide portion. The first and the second light guide portions are separated by a light separation structure (103), where the amount of light conducted from the first light guide portion towards the second light guide portion is determined by the thickness of the light separation structure.

Abstract: A system and method for compensating for non-uniform illumination from a light guide for a display in an electronics device is provided. The system comprises: a memory device storing a data representing a first compensation pattern for generation on the display to block light from a first portion of the light guide relative to light from a second portion of the light guide; a first module to incorporate the stored representation into an image to be displayed on the display; and a second module to generate the image with the stored representation for display on the display. In the system, when the first module generates the first compensation pattern on the display, the first compensation pattern aligns with the first and second portions to reduce an intensity of light from a light source passing through the first compensation pattern from the first portion relative to an intensity of light passing through the first compensation pattern from the second portion from the light source.

Abstract: 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.

Abstract: A light guide with input and output faces 2, 3a is polar-symmetric about the first face 2 and has optical properties such that the angle at which a ray is injected into the first face determines the position at which it leaves the second face 3a, or, if operated in the reverse direction, the position at which the ray enters the second face determines the angle at which the ray leaves the second face. The light guide includes a tapered transparent sheet 3, light from the first face entering at the thick end of this sheet, and the second face forming one face of the tapered sheet. An input/output slab 4 adjoins the tapered sheet 3 for fan-out of light from the first face 2 to the tapered sheet, and a transition region 8 is located between flat and tapered sheets. The polar symmetry means that light rays always travel in line with the taper direction, which suppresses banding.

Abstract: A light guide plate for displaying a three-dimensional (3D) image, and a 3D image display apparatus employing the same. The light guide plate includes a transparent body formed in a flat panel shape, and for guiding light with total internal reflection in the transparent body; and a plurality of viewing zone separation units aligned inside the transparent body. Light incident on two side surfaces of the light guide plate is separated into different viewing zones by reflective surfaces of the viewing zone separation units.

Abstract: Disclosed is a backlight unit. The backlight unit includes: a bottom sash; a light guide plate received by the bottom sash; a substrate on which a light emitting device is mounted, the light emitting device irradiating light to the light guide plate; a fixing member fixing the substrate; and a sliding moving part fixing the fixing member in such a manner that the fixing member moves with respect to the bottom sash.

Abstract: A light guide plate, backlight module installed with the same and method of guiding light utilizing the same are provided. The light guide plate has a bottom surface, a light outlet surface opposite to the bottom surface, and a light inlet surface at least connected with the light outlet surface. A light is introduced to the light inlet surface and transmitted in the light guide plate. The light guide plate comprises a light transmissive substrate installed with at least one through hole, and a first slot installed on the light transmissive substrate and arranged at the periphery of the through hole.