Abstract: The present invention relates a prism sheet, and a back light unit and a liquid crystal display device therewith, in which total thickness of a back light unit is reduced while taking place of the lamp mura is prevented, for improving a picture quality. The prism sheet includes a plurality of first prism mountains formed on a supporting film at regular intervals, a resin layer filled between the first prism mountains, and a plurality of second prism mountains formed on the resin layer and the first prism mountains with at intervals greater than the intervals of the first prism mountains.

Abstract: Disclosed is a backlight unit in order to suppress an increase of time needed for manufacture and generation of operation variance, and furthermore, to suppress deterioration and unevenness of luminance of output light. A plurality of transparent light guide plates (5), which are disposed in a chassis (4) in the lateral direction, and which output light emitted from a light source (7), are provided with a fixing protruding section (51) which is to be pressed by a fixing member (6), and an outputting section (52), which outputs planar light. The outputting section (52) is provided with, when viewed from the front, an extending section (53) which extends to cover at least a part of the fixing protruding section (51).

Abstract: A light guiding apparatus includes a light guiding apparatus and a second light guide. The first light guide includes a first end-surface, a second end-surface and a side-surface, in which the first end-surface includes a first light incident surface thereon, the second end-surface includes a first light emitting surface thereon, and the side-surface is located between the first end-surface and the second end-surface of the first light guide. The second light guide has a second incident surface and a second light emitting surface connecting the second incident surface, in which at least a partial region of the second light emitting surface is a roughened surface, the second incident surface or the first light emitting surface is a roughened surface, and the second incident surface is corresponding to the first light emitting surface.

Abstract: A backlight unit includes a chassis, LED light sources, and a reflection member. The LED light sources are arranged in a matrix on a bottom plate of the chassis. The reflection member includes side wall portions and through holes through which the LED light sources are passed. The side wall portions surround each of the LED light sources passing through the respective through holes. The side wall portions have inclined surfaces on side surfaces thereof that lead light from the LED light sources toward the opening side of the chassis. Each of the side wall portions located between the LED light sources that are adjacently positioned in a diagonal direction has a height greater than a height of each of the side wall portions located between the LED light sources that are adjacently positioned in a vertical direction or in a horizontal direction.

Abstract: A light guide plate (LGP) and a lighting lamp including the LGP. The LGP has no frame and is easy to be spliced together. The LGP includes at least one sub-LGP. The sub-LGP includes at least one light source portion that is opposite to the light source, and at least one light shield installation slot that is sunken inwards and arranged beside the light source portion.

Abstract: A display device includes a liquid crystal display panel that varies a phase of polarized light via liquid crystal molecules, and having first and second polarizing plates respectively disposed on opposite sides of the liquid crystal display panel; a first light guide plate including a surface having a plurality of recessed patterns, to reflect light input through a side surface of the first light guide plate, and to output two-dimensional light towards the liquid crystal display panel; and a second light guide plate including a surface having a plurality of recessed patterns, the plurality of recessed patterns of the second guide plate facing the plurality of recessed patterns of the first light guide plate.

Abstract: Provided are a backlight unit and a display device having the same. The backlight unit includes a light source configured to generate light and a plurality of light guide members stacked so that individual surfaces of each light guide member contact a surface of another one of the light guide members, the plurality of light guide members configured to guide the light. Each of the light guide members includes a light incident for receiving incident light from the light source, an opposite surface facing an adjacent one of the light guide members, and a plurality of light path change patterns disposed on the opposite surface. Thus, brightness of the display device may be improved.

Abstract: Light guide structures that include a transparent plate having a first end and a second end; and a plurality of transparent light guide members, each transparent light guide member extending from the first end to the second end along one surface of the transparent plate and being configured to emit white light in response to light applied thereto are described.

Abstract: A reflective cover molding method and a reflective cover manufactured thereof are disclosed. The reflective cover molding method comprises the steps of: providing a metal substrate; setting the metal substrate on a substrate mold, and punching the metal substrate by a pressure to form a circular substrate; propping the circular substrate onto a fixed mold with a prop; jointly rotating the fixed mold and the circular substrate, applying a pressure by a spinning roller to attach the circular substrate, and applying a pressure to spin out a molded cover; setting the molded cover onto a shaped mold, and punching the molded cover by a pressure to form an optical structure surface on the molded cover; and punching the molded cover to remove a bottom hole to form the reflective cover, so as to accelerate production rate and enhance product quality, stability and precision.

Abstract: A scuff plate has a first light guide element having a groove of predetermined shape formed in an underside of the element when viewed from below, a first light source that guides light to the first light guide element, light emission unit that is disposed below the first light guide element and that upwardly emits light differing in color from the first light source, and a half mirror layer interposed between the first light guide element and the light emission unit. Light from the first light source is guided to the first light guide element, and the guided light undergoes reflective diffusion at the groove (a character section). As a consequence, a desired character, or the like, is luminously displayed. In the meantime, light generated by the light emission unit exits through the first light guide element, whereupon an area (a background area) other than the groove (the character section) is illuminated in color that differs from the color of light from the first light source.

Abstract: A surface light-emitting device (1) of the present invention includes: first light sources (2a) emitting light in one direction, a second light source (2b) emitting light in a direction orthogonal to the direction, a first light guide plate (3), and a second light guide plate (4). The plate (3) has a light-incident end surface (6) on which light emitted from the light sources (2a) is incident, at least one light-incident end surface (8) on which light emitted from the light source (2b) is incident, and a light-emitting end surface (7) which is opposite to the surface (6) and from which light entering the plate (3) is emitted. The plate (4) includes a counter end surface (9) opposite to surface (7), and carries out, from its main surface, surface-emitting of light entering the plate (4) via the surface (9).

Abstract: An optical arrangement comprising a light guide (101) having a light-entry portion (103) with a light-entry surface (105), a tapering portion (107) with a light reflecting surface, and a light-exit surface (109). The light-entry portion (103) is arranged to guide light from the light-entry surface (105) in a first direction (x) towards the light reflecting surface (H I), the light reflecting surface being arranged in relation to the first direction (x) so that incident light from the light-entry portion (103) is reflected towards the light-exit surface (109). A light transmitting layer (113) is adapted to transmit light diffusively and arranged to cover at least a portion of the light-entry edge surface (105) of the light guide (101). The arrangement is e.g. suitable for use in a LED based luminaire and allows for efficiency and forming of a light beam able to fulfill glare requirements. The arrangement may advantageously be used in a downlighting application.

Abstract: A light guiding plate includes a light guiding main body, a first light guiding unit and a second light guiding unit. The light guiding main body has a first surface, a second surface opposite to the first surface and a light inlet face connecting between the first and second surfaces. The first light guiding unit includes first and second light guiding structures disposed on the first surface. The first and second light guiding structures are parallel aligned, each second light guiding structure has a plurality of first light guiding bodies that is individually separating and connecting the immediately abreast first light structures, and the arrangement density of the plurality of first light guiding bodies decreases toward the light inlet face. The second light guiding unit includes a plurality of third light guiding structures disposed on the second surface. The third light guiding structures are parallel arranged.

Abstract: A repetitive lighting fixture will alternate between at least two different illuminated images projected in a desired direction. The fixture includes edge-lit flat panels that are configured and/or overlayed to reproduce one or more desired images. Each panel is made of light-transmissive material, which optionally may contain colorant. Each edge-lit flat panel contains optics coupled with a second planar surface of the panel. The optics are arranged to define a desired shape of an image and are configured so as to cause light distributed within the panel to exit a first planar surface of the panel. Each panel has its own light source that projects light into a light transmitting edge of the panel. The panel's light source can include light emitting diodes (LED) that only or selectively illuminate the specific optics of that panel.

Abstract: In a liquid crystal device, when the local dimming is adopted, at a light guide plate of a lighting device, light guide plate portions having a trapezoidal planar shape where two sides facing each other in the Y-axis direction have different lengths are arranged in the X-axis direction to have reverse orientations in the Y-axis direction. A light emitting element emits the light of a light source from the end surface of the light guide plate portion which is located at a short side into the light guide plate portion. A light scattering surface is installed at the space between the light guide plate portions.

Abstract: A backlight module is disclosed, which includes plural light sources, a light guide plate, a light scattering device, a high-reflectance microstructure formed on the light guide plate, and a high-diffusion microstructure formed on the light guide plate. The light guide plate has a first surface and a second surface opposite to the first surface. The first surface faces the light sources. The light scattering device is disposed between the light sources and the light guide plate. The high-reflectance microstructure is formed on the second surface. The high-diffusion microstructure is formed on or indented inwardly from the first surface.

Abstract: A display apparatus includes a housing formed with a front opening, a display unit disposed in the housing, and a lighting unit disposed in the housing for illuminating the display unit. The display unit includes a light-transmissive front display screen exposed through the front opening, and a light-transmissive rear screen disposed spacedly parallel to the front display screen. The rear screen is operable to have a first light transmittance, and a second light transmittance higher than the first light transmittance.

Abstract: A light source module of the present invention is configured such that there is a through hole (23) in one longitudinal end portion of a light guide (21) that constitutes a light guide plate, into which through hole (23) a positioning pin (24) for positioning an LED light source (12) and the light guide (21) fits. Further, a guide (9) is provided to the other end portion of the light guide (21), which guide (9) restrains the light guide (21) in a direction of a short side but does not restrain the light guide (21) in a direction of a long side. This makes it possible to provide a light source module that can reduce warping and cracking caused by expansion of a light guide, and an electronic apparatus including the light source module.

Abstract: The present invention provides a light guide plate and a side-edge backlight module using the light guide plate. The light guide plate includes a plurality of air barrier walls formed therein. The air barrier walls divide the light guide plate into a plurality of sections. With the arrangement of air barrier walls between independent sections of the light guide plate according to the present invention, by means of total reflection, light incident into each independent section is blocked from penetrating through the air gaps and is thus confined within the independent section. Thus, brightness sectioning and independent control of sectionalized brightness of the light guide plate can be realized and improved light isolation result, improved yield, being mass producible, and low cost can be achieved. The side-edge backlight module uses the light guide plate so as to realize brightness sectioning and independent control of sectionalized brightness of the backlight module.

Abstract: There is provided a backlight unit. The backlight unit is configured to include: a plurality of light sources; a plurality of light guide plates being arranged alternately with the light sources so that light emitted from the light sources is incident; and a chassis receiving the light sources and the light guide plates, wherein the plurality of light guide plates are disposed to be spaced apart from each other, being symmetrical to each other in order to face the central region of the chassis, a pair of light guide plates opposed to each other on the central region being connected to each other so that the light therefrom is mixed.

Abstract: A multi-domain dynamic-driving backlight module is provided, which includes a bezel, a reflective plate, a plurality of light emitting units, and a plurality of light guide plates. The reflective plate is disposed on the bezel. The light guide plates respectively have a short side and a long side extending in a predetermined direction, wherein each of the light emitting surfaces of the light guide plates includes a plurality of patterned structures extending in a direction parallel to the light projection direction of the light emitting units. Each of the light emitting surfaces includes a patterned surface includes a plurality of patterned structures extending in a direction parallel to the light projection direction of the light emitting units.

Abstract: Techniques are disclosed for extracting light from within a lightguide by providing therein a plurality of internal light extraction features. A broad range of internal light extraction feature configurations (e.g., geometries/shapes, materials, refractive index changes, etc.) can be provided, and a variety of processes/techniques (e.g., 3-D printing, laser cutting/etching, injection molding, embossment, layer stacking, extrusion, etc.) can be used to do so. The features can be configured to achieve any desired set of photometric performance criteria (e.g., single/double-sided emission, optical efficiency, energy efficiency, spatial/angular luminance distribution, intensity gradients, etc.) for a given lightguide-based fixture/device. In some cases, internal and surficial light extraction features can be used together to extract light. Also, a wide variety of lighting fixtures/devices (e.g., panels, bulbs, tubes, rings, containers, three-dimensional structures/sculptures, multi-layered, multi-sectioned, etc.

Abstract: The present invention discloses an input device with multi pattern layers including an input interface, a first light emitting element for generating a first light beam, a first light guiding plate, a second light emitting element for generating a second light beam, a second light guiding plate, a first circuit board and a second circuit board. The input interface is stacked on the first light guiding plate, and the first light guiding plate is stacked on the second light guiding plate, such that a first space and a second are formed individually at the two ends of the first light guiding plate and the second light guiding plate. The first circuit board and the second circuit board block the first light beam and the second light beam individually by inserting into the first space and the second space individually.

Abstract: The backlight assembly includes a light source part and a light guide plate. The light source part generates a first light beam. The light guide plate has a plurality of light guide blocks. Each of the light guide blocks has a light incident surface, an opposite surface, a light emitting surface, and an inclined surface. The light incident surface receives the first light beam. The opposite surface is located opposite to the light incident surface, has a convex shape with respect to the light incident surface, and reflects the first light beam and converts the first light beam into a second light beam. The light emitting surface emits the second light beam. The inclined surface is inclined with respect to the light emitting surface.

Abstract: An input device with multiple layers of luminous patterns is provided. The input device includes an input interface, a first light-emitting element, a second light-emitting element, and a light guide plate. The light guide plate includes an upper light-guiding layer, a lower light-guiding layer, and a gap. The upper light-guiding layer and the lower light-guiding layer are separated from each other by the gap. The light guide plate has multiple layers of luminous patterns, which are selectively visible. Consequently, the overall thickness of the input device is reduced.

Abstract: A flat light source module including a light guide plate, a flexible circuit board and a light emitting device is provided. The light guide plate has a light incident surface, a light exit surface and a bottom surface opposite to the light exit surface, wherein the light incident surface further includes a light incident curved surface, and the light incident curved surface is connected with the light exit surface and the bottom surface. The flexible circuit board is disposed beside the light incident curved surface along the light incident curved surface of the light guide plate. The light emitting device is disposed on the flexible circuit board, and the light emitting device has a light emitting surface facing the light incident curved surface.

Abstract: Disclosed are a display device and a backlight unit. The display device comprises a flexible light guide plate, a light source disposed at one side of the light guide plate, and a support member disposed in opposition to the light guide plate and the light source to support the light guide plate. The support member allows the light source and the light guide plate to have constant interval therebetween, and prevents the light source and the light guide plate from being tilted each other. The display device and the backlight unit ensure improved brightness and brightness uniformity.

Abstract: An optical member includes a first optical sheet, and a second optical sheet disposed on the light exit side of the first optical sheet. The optical sheets each include a body portion, and unit shaped elements arranged side by side on the body portion. The ratio of the height of the unit shaped elements relative to the arrangement pitch of the unit shaped elements in the first optical sheet is smaller than that in the second optical sheet.

Abstract: An optical display element (10) made up of selectively illuminatable concentric rings (14) is provided, in which the rings (14) are obtained by the light exit surface (20) of a respective optical waveguide body (18). Each optical waveguide body (18) has a light entry surface (22) which couples light in from an associated light source (24) which is adapted to be selectively activated. The light entry surface (22), as related to the common axis (12), has a larger radial extent than the light exit surface (20). Further, the optical waveguide bodies (18) have directly radially adjacent light-blocking side surfaces (30). Owing to this configuration, it is solely the optical waveguide bodies (18) which determine the geometry of the concentric rings (14). Since the optical waveguide bodies (18) can be manufactured with high precision, the intended close tolerances are obtained. In this way, radial distances between the rings (14) of only approximately 0.2 mm or less can be achieved.

Abstract: A plurality of display panels include a display region and a frame region. The plurality of display panels include first and second display panels adjoining each other; the frame region of the first display panel is overlapped by a side face of the second display panel so that an angle defined by viewer-side surfaces is more than 0° but less than 180°; first and second light guide elements are disposed on the viewer's side of peripheral display regions; the light guide elements have incident and outgoing faces and a plurality of light guiding portions; the distance between the incident and outgoing faces increases away from the peripheral display region toward the frame region; the volume of the first light guide element is larger than that of the second light guide element; and the outgoing faces of the first and second light guide elements are covered by a functional film.

Abstract: A backlight unit is capable of preventing generation of mura such bright lines and dark lines. The backlight unit includes a light guide panel divided into a plurality of light guide blocks for local dimming driving, a first block partitioning unit formed as a groove between respective adjacent light guide blocks on a lower surface of the light guide panel, and a point light source received in the first block partitioning unit.

Abstract: A light guide element includes a light-emitting section including a light-emitting surface, a light guide section, and a diffusing device provided in at least part of a region extending from a boundary surface between the light-emitting section and the light guide section, to point halfway between the boundary surface and an end of the light guide section closer to the light source. The light guide element might be used to form a backlight for a liquid crystal display device.

Abstract: The embodiments of the present invention disclose a back-plate structure of backlight, a backlight and a display device. The backlight is applied to a display device. The back-plate structure comprises a substrate and a plurality of optical fibers disposed on the substrate. Each optical fiber is provided with a light outlet corresponding to a sub-pixel of the display device so that light inputted into the optical fiber is emitted to the sub-pixel to which the light outlet corresponds via the light outlet.

Abstract: A lightguide includes a plurality of coupling lightguides extending from a body of film. The plurality of coupling lightguides are folded and arranged in a stack, wherein a region of the film is wrapped around at least one side of the stack of the plurality of coupling lightguides.

Abstract: A display includes an outer casing, two backlight modules, and a flexible display panel. The outer casing includes at least one connecting member having two connecting ends respectively disposed at left and right sides thereof, and two casing panels connected respectively to the connecting ends and respectively having bonding faces. The two backlight modules are disposed respectively on the bonding faces of the casing panels. The flexible display panel includes two side panel sections disposed respectively on the backlight modules, and a foldable intermediate section connected between the side panel sections. The casing panels are pivotal relative to each other to move the backlight modules and the flexible display panel to an unfolded position. The backlight modules coplanarly cover a backside of the flexible display panel in the unfolded position.

Abstract: Disclosed is a light unit. The light unit includes: a light guide plate having a plurality of grooves formed on one side thereof; a light guide extension formed at one side of the groove; and at least one light emitting diode allowing light to be incident on the light guide plate through the light guide extension.

Abstract: A device includes a film-based lightguide and a film adjustment mechanism configurable to adjust an orientation of a region of the film-based lightguide such that an angular light output profile from the device changes when a light source emits light that travels in a waveguide condition through the film-based lightguide.

Abstract: A backlight module includes a light guide plate, a light source disposed at a side of the light guide plate, a diffuser sheet positioned over the light guide plate but not directly contacting the light guide plate, and a light mixing space positioned between the light guide plate and the diffuser sheet so that light emitted from the light guide plate mixes in the light mixing space before being emitted out of the backlight module.

Abstract: A light-guide illumination device and system comprises a light source, a light redirecting slab and a light guide slab assembly. The light redirecting slab includes a generally planar face having optical redirecting elements, the optical redirecting elements having respective optical coupling surfaces situated distally from the planar face. The light guide slab assembly includes a planar face having an optically transmissive interface layer assembled onto a first planar face of the light guide slab and optically coupled to receive transmitted light directed from the light source. The light guide slab is pressed onto the redirecting slab such that the interface layer is deformed, creating optical bonds at the optical coupling surfaces of the optical redirecting elements, the formed optical bonds providing optical apertures for light transmission therethrough.

Abstract: A light deflection film is provided, which includes an incident surface including a plurality of first prism structures, and an emission surface including a plurality of second prism structures. The first prism structure includes a first surface and a second surface, a first angle between the first surface and an X-axis is 0 to 20 degree, a second angle between the second surface and a Y-axis is 5 to 60 degree. The second prism structure comprises a third surface and a fourth surface, a third angle between the third surface and the X-axis is 0 to 20 degree, a fourth angle between the fourth surface and the Y-axis is 5 to 60 degree. Thus, as implemented in windows, the light deflection film may guide partial sunlight to a ceiling to increase ambient brightness, reduce the usage quantity of illumination devices, and avoid glare.

Abstract: An optical touch control apparatus, for detecting displacement between an object and the optical touch control apparatus. The optical touch control apparatus comprises: an object detecting apparatus, for detecting the object to generate an object image, having a first detecting area in a first mode and having a second detecting area in a second mode, wherein the first detecting area is larger than the second detecting area; an image sensor, for capturing at least one frame of the object image; and a control unit, for adjusting an image capturing area of the image sensor, according which one of the first detecting area and the second detecting area the object detecting apparatus utilizes.

Abstract: A backlight module provided includes a light source, a first light-guided plate, and a second light-guided plate stacked on the first light-guided plate. The first light-guided plate includes a plate body and an extension disposed on an edge of the plate body and extending towards the second light-guided plate aside a lateral side of the second light-guided plate. The plate body and the extension form a seamless light incident surface. The extension has a reflection surface. The reflection surface connects the light incident surface or the surface of the plate body. The light source is disposed at a light incident surface of the first light-guided plate for projecting light into the light-guided plate.

Abstract: The present invention provides a backlight module including a plurality of illuminant units and two light guide plates respectively arranged at two opposite sides of the illuminant units. Each of the light guide plates has a light-incident surface and a light-emitting surface adjacent to the light-incident surface. A portion of the illuminant units emit light toward the light-incident surface of one of the light guide plates, and the other portion of the illuminant units emit light toward the light-incident surface of the other light guide plate. The dimension of the light-emitting surface of each light guide plate is positive proportional to the amount of the illuminant units emitting light toward the light guide plate. In addition, the present invention also provides a liquid crystal displaying apparatus including the above-mentioned backlight module.

Abstract: A light guide with optics guides light exiting the guide. The device achieves accurate control of the reflected light by extracting light from a limited area of the light guide. The configuration of the reflectors used for the selective extraction determines the nature of the output light. The reflectors may be located on a side of the light guide opposite to an output side of the light guide.

Abstract: A light guide panel 1 having a reflective sub-wavelength diffraction grating 3 generates zero-order light and minus first-order light in the reflective sub-wavelength diffraction grating 3, extracts the minus first-order light as outgoing light, and transmits the zero-order light to generate new minus first-order light by satisfying the conditional expressions: sin?1(1/n)<?1??(1) ?/{n(sin ?1+1)}??<min[2?/{n(sin ?1+1)},?/{n(?sin ?1+1)}]??(2) sin?1{sin ?1??/(n·?)}<sin?1(1/n)??(3) where, ?: wavelength of light n: refractive index of a light guide panel main body ?: period of the reflective sub-wavelength diffraction grating ?1: angle of incidence of the light in relation to the reflective sub-wavelength diffraction grating.

Abstract: The present invention relates to a side-edge backlight module having non-uniformly sized backlight sections and a design method thereof. The backlight module includes backlight sections that have relative sizes satisfying the condition that the backlight sections have higher ranks are of greater sizes. Ranking the backlight sections is made by conducting an simulation operation for a process of sectionalized lighting of backlight to display liquid crystal panel signals on the basis of uniformly sized backlight sections and conducting analysis of the number of zones where an interference signal appears and distance of the interference signal when each of backlight sections is lit in the simulation operation on the basis of uniformly sized backlight sections and ranking the backlight sections according to strength of cross-talking caused by the interference signal so that a backlight section having less strong cross-talking is set with a higher rank.

Abstract: A display device includes first and second display panels, a first backlight assembly including a first light source that emits first light and a first reflective sheet that reflects the first light, and a second backlight assembly including a second light source that emits second light. A chromaticity coordinate region of the second light is different from a chromaticity coordinate region of the first light. The second backlight also assembly includes a second reflective sheet that reflects the second light and includes a second material different from a first material of the first reflective sheet. The first reflective sheet reflects the first light as third light toward the first display panel, and the second reflective sheet reflects the second light as fourth light toward the second display panel. A chromaticity coordinate region of the third light and a chromaticity coordinate region of the fourth light are substantially the same.

Abstract: A lighting module and lighting device are described. Embodiments of the lighting modules comprise light emitting diodes (LEDs), a power supply, and a waveguide that disperses light from the LEDs to illuminate a lighted side of the lighting module. In one embodiment, the lighting module comprises a substrate, on which the LEDs and power supply are mounted. The substrate includes an interface that permits the lighting module to communicate with an adjacent lighting module when positioned in an array that forms an LED lighting device.

Abstract: A diffusion plate includes a base having a top surface and a bottom surface and a plurality of parallel convex ridges integrally formed on the top surface of the base while extending in one direction. Each convex ridge has a cross section shaped as a portion of an ellipse. The display apparatus includes a display panel, a light source and the diffusion plate.

Abstract: A three-dimensional (“3D”) image display device includes a backlight unit. The backlight unit includes a light guide part including a plurality of light guide units. Each of the light guide units includes a light guide plate including a light emission surface through which supplied light is emitted, a bottom surface which faces the light emission surface, and side surfaces which connect the light emission surface to the bottom surface, a plurality of light sources which emit light toward at least one of the side surfaces, and a band pass filter between the side surface to which the light is emitted and the light sources.