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 display includes a panel and a backlight module. The backlight module includes a reflective board, a shell, at least two lenses and a light source. The lenses are installed on the reflective board. The reflective board is installed on the shell. The light source is installed in the shell and the light from the light source passes through the lenses. Each lens includes a bottom portion on the reflective board and an extending portion protruding slantwise from the bottom portion. The extending portion includes a reflective surface opposite to the reflective board approximately. A light from the light source is reflected onto the reflective board via the reflective surface, and then reflected onto the panel via the reflective board.

Abstract: A LED backlight assembly including a light emitting diode array having a plurality of red, green and blue light emitting diodes; a light guide plate at the side of the light emitting diode array; and a supporter supporting the light guide plate. The amount of red light produced by a red light emitting diode positioned at one end of the light emitting diode array and the amount of blue light produced by a blue light emitting diode positioned at another end of the light emitting diode array is less than that produced by the next light emitting diode of the same color, respectively.

Abstract: The present invention provides an integrated backlight illumination assembly for an LCD display comprising: a plurality of solid state light sources for providing a point light source; a plurality of light guide films having light redirecting areas provided between the plurality of solid state light sources for redirecting and spreading the point light sources to a uniform plane of light, a light redirecting bar located between opposing light guide films, the light redirecting bar comprising a top capping portion and a bottom portion, the bottom portion being aligned perpendicular to the top capping portion wherein said bottom portion has at least one light redirecting feature.

Abstract: Laser lights emitted from a light source 30 are diffused in a direction parallel to main surfaces of a light guide plate 9 by a one-dimensional diffuser 5. The diffused laser lights are converted to parallel lights by a first cylindrical lens 6, and are then converged in a direction of the thickness of the light guide plate 9 by a second cylindrical lens 7. The converged laser lights are reflected 90 degrees twice by a mirror 8, and are guided to a side surface of the light guide plate 9.

Abstract: A light guide includes a substrate having opposing first and second major surfaces and an input edge coupler disposed along an edge of the substrate. The ratio of a light guide input edge thickness to a light guide thickness is greater than 2:1.

Abstract: A backlight module includes a light guide plate (LGP) and a light emitting unit. The LGP has a first surface, a second surface, a light incident surface, a first curved convex surface, a first plane, a second curved convex surface and a second plane. The first surface has a visual area. The second surface is opposite to the first surface. The light incident surface, the first curved convex surface, the first plane, the second curved convex surface, and the second plane connects the first surface and the second surface. The light incident surface connects the first plane and the second plane. The light emitting unit is disposed beside the light incident surface for emitting a light beam, wherein the light beam is capable of entering the LGP through the light incident surface, and being transmitted out of the LGP through the visual area of the first surface.

Abstract: A liquid crystal display device that reduces manufacturing cost, contributes to a thin profile, and generates uniform brightness, and a fabricating method thereof are disclosed. In the liquid crystal display device, a liquid crystal display panel is prepared. A backlight includes a plurality of lamps, a diffusion plate which is located on the lamps, and an intermediate diffusion medium located between the lamps and the diffusion plate to diffuse light from the lamps, and irradiates light to the liquid crystal display panel. Furthermore, in the method of fabricating the liquid crystal display device, a diffusion material is molded using a mold to form an intermediate diffusion medium that includes a plurality of ribs connected to an external band of square type and both sides of the external band of square type, respectively. The intermediate diffusion medium is located between lamps and a diffusion plate.

Abstract: A diffusion unit of a light-emitting module is disposed adjacent to at least one light source. The light source emits a light beam. The diffusion unit includes a first diffusion sheet and a second diffusion sheet. The thickness of the first diffusion sheet is less than 1 mm, and the thickness of the second diffusion sheet is also less than 1 mm. The second diffusion sheet is disposed adjacent to the first diffusion sheet. The light beam is directly emitted from the light source directly to the first diffusion sheet. A light-emitting module and a diffusion sheet are also disclosed.

Abstract: A light emitting diode (LED) device applied to a backlight module includes a substrate, a plurality of sub-substrates, a plurality of light emitting chips, and a plurality of package lenses. The sub-substrates are installed on the substrate, and the light emitting chips are installed on the sub-substrates respectively. The package lenses are installed on the light emitting chips respectively, and each package lens is in a solid semi-elliptical shape and includes a long axis and a short axis perpendicular to the long axis.

Abstract: The present invention describes a light mixing waveguide including a transparent slab waveguide having a reflectorized edge, a pair of opposing side edges adjacent to the reflectorized edge, a light transfer edge opposite the reflectorized edge, and a plurality of cavities formed inside the slab waveguide, wherein at least one of the side edges is configured to receive light from one or more light sources so that the received light is totally-internally reflected from top and bottom surfaces of the transparent slab waveguide. Interaction of the received light, the cavities, and the reflectorized edge mixes the received light prior to the light passing through the light transfer edge and into a target optical system.

Abstract: A light guide plate and a display device having the same are provided, which can uniformly emit light on the whole. The light guide plate includes a light input part including first and second areas to which light is incident, and a light output part neighboring the light input part and outputting light. The light having passed through the first area is emitted with its light quantity distribution biased in a first direction, and the light having passed through the second area is emitted with its light quantity distribution biased in a second direction different than the first direction.

Abstract: A lamp for emitting light, comprising a transparent sheet-like lightguide, with at least one light receiving side, a light emission front surface and a back surface opposite the front surface. The lamp further comprises a plurality of light sources, positioned in an array and optically coupled to at least one light receiving side. The back surface of said lamp comprises a plurality of optical extraction structures, for example provided in parallel curved lines. Furthermore, the lamp is substantially free from light scattering structures in a light path of the light to be emitted.

Abstract: An illuminating device according to the present invention includes light guide plate 1, cold cathode fluorescent lamp 2 disposed to face a rear surface of light guide plate 1, and prism 3 that allows light emitted from cold cathode fluorescent lamp 2 to be incident on light guide plate 1, and prism 3 is disposed in a region inward from an edge of light guide plate 1.

Abstract: Light guide devices comprising an intermediate layer of low refractive index between higher refractive index elements are described. The light guide devices are suitable for use in backlights.

Abstract: A flexible circuit board of a liquid crystal display device includes a first insulating film, a plurality of conductive patterns formed on the first insulating film, a second insulating film formed on the first insulating film to cover the conductive pattern, a plurality of light sources coupled to the conductive pattern, and an upper light absorbing layer formed on an outer circumference of the light source to absorb light emitted from the light source, wherein the upper light absorbing layer is formed in a triangle shape on one side of the light source.

Abstract: A surface illuminator has a uniform luminance over a large area by using a laser light source, has a wide color reproduction range, and is capable of suppressing a speckle noise. A liquid crystal display uses such a surface illuminator. The surface illuminator includes the laser light source that emits a laser beam; a beam scan section that deflects and scans the laser beam; and a first plate-shaped light guide that causes the laser beam deflected and scanned by the beam scan section to be incident from an end face portion and causes the incident laser beam to emit from a first major surface. Further, the liquid crystal display includes a liquid crystal display panel and the surface illuminator, wherein the surface illuminator is used as a backlight illuminator that lights the liquid crystal display panel from the backside in this liquid crystal display.

Abstract: A backlight module includes a back plate, an optical sheet, and a lateral frame. The back plate has a first surface, wherein the first surface includes a raised portion formed near the edge of the first surface. An insertion opening is formed between the raised portion and the first surface. The optical sheet is disposed on the first surface, wherein a protrusion is formed at one end of the optical sheet to be inserted into the insertion opening. The lateral frame is disposed on the back plate and corresponds to the edge of the first surface. The lateral frame includes at least a side wall having a sinking portion formed at the bottom of the side wall, wherein the bottom of the side wall is disposed on the optical sheet while the raised portion is received in the sinking portion.

Abstract: Disclosed is a diffuser plate supporter of a backlight unit. The diffuser plate supporter functions to support a diffuser plate and includes: a frame positioned on the lower side of the diffuser plate supporter; a supporting member which is formed by an injection molding process and a portion of which penetrates through the frame; and a cap damper which is formed by an injection molding process and a portion of which penetrates through the inside of the supporting member.

Abstract: Light emitting assembly includes an optical conductor having a pattern of deformities on or in front and back sides of the optical conductor to cause light to be emitted from a light emitting surface on at least one of the sides. At least one of the deformities varies, and at least one planar or curved refractive surface is aligned with at least one light source to redirect a portion of the light from the light source entering the optical conductor in a predetermined manner to cause the light emitted from the light emitting surface to pass through an optical film, which redirects the light through a liquid crystal display with no loss.

Abstract: An illumination module includes a light bar, an LED assembly, a positioning member, a sleeve and a lamp receptacle. The light bar has a first end and a second end opposite the first end. A microstructure layer or a reflective layer is formed on the light bar, and a positioning pillar is formed on an outer side of the light bar. The emitting light of the LED assembly is diffused by the microstructure layer or reflected by the reflective layer to spread over the entire light bar. The positioning member, the sleeve, the LED assembly or the lamp receptacle has at least one guide slot that engages with the positioning pillar of the light bar.

Abstract: A liquid crystal module includes a liquid crystal panel and a back light unit. The back light unit has a rear frame, a light guide plate and a lamp reflector assembly. The lamp reflector assembly including a light source, a lamp reflector and a lamp socket. The lamp reflector has a front plate, a rear plate and a side plate with a tab. At least one of the front plate and the rear plate has a fixing hole. The lamp socket has a fixing protrusion that is fitted into the fixing hole of the lamp reflector, and a slit that receives the tab of the lamp reflector.

Abstract: An exemplary backlight module includes a base plate, a plurality of light guide plates and a plurality of light sources. The light guide plates are juxtaposed and attached on the base plate. The light guide plates are optically isolated from each other. The light sources are disposed adjacent the respective light guide plates.

Abstract: An illumination device is specified which has a light source (1) suitable for coupling divergent electromagnetic radiation (6) into an optical waveguide (2), the electromagnetic radiation (6) being guided in the optical waveguide (2) on the basis of total reflection the optical waveguide (2) being suitable for changing a main radiating direction (17) of the electromagnetic radiation (6), and the optical waveguide (2) being formed in one piece. Light-emitting diodes are preferably used as the light source (1). The illumination device is particularly well suited to the backlighting of displays.

Abstract: The present invention relates to a technique which can make a backlight used in a liquid crystal display device thin and light-weighted. The present invention provides a liquid crystal display device which includes a display panel and a backlight which is arranged behind the display panel, wherein the backlight includes a film-like light guide member, a film-like light semi-transmissive member which is adhered to a first surface of the light guide member which faces the display panel in an opposed manner, a film-like reflective member which is adhered to a back surface of the light guide member opposite to the first surface, and a spot light source which is arranged at a position of the light guide member at which light is incident on the light guide member from the first surface or the back surface, and a refractive index of the light semi-transmissive member is set smaller than a refractive index of the light guide member.

Abstract: A spread illuminating apparatus is provided where: a light introducing prism mechanism is formed at a light entrance surface of a light guide plate wherein the prism mechanism includes a plurality of prism pieces extending in the thickness direction of the light guide plate and including first and second light incidence faces which have respective different inclination angles relative to the light entrance surface such that the first and second light incidence face are inclined relative to the light incidence surface at an angle ranging from 0 degree to 30 degrees and at an angle ranging from 45 degrees to 90 degrees; a light emitting pattern is formed at the bottom surface of the light guide plate such that prisms are continuously disposed in a step-like manner in the direction perpendicular to the light entrance surface; and a light diffusing pattern is formed at the top surface of the light guide plate such that arc prisms are disposed in the direction parallel to the light entrance surface.

Abstract: Laser lit flat panel displays are disclosed including edge-lit and direct lit backlights. In certain embodiments, laser assemblies are selected to obtain bandwidth distributions to reduce speckle.

Abstract: An illuminating device achieves higher brightness by improving the utilization efficiency of light from a light source in an illuminating device for emitting plane-shaped light. The backlight device includes a light guide member, and LED units facing side surfaces of the light guide member, and propagates light that is emitted by the LEDs and made incident to the side surfaces in the light guide member so as to emit plane-shaped light from a first main surface of the light guide member. The backlight device includes an insulating reflective member placed outside a second main surface of the light guide member facing the first main surface, and a metal reflective sheet laminated on the insulating reflective sheet on the side opposite to the light guide member.

Abstract: Optical assembly comprises a light emitting panel having at least one light source positioned adjacent to at least one light input edge located at or near a corner of the panel and at least one light output surface for emitting light. In close proximity to the light output surface is a light redirecting film for receiving light emitted from the light output surface. The film has optical grooves extending across the film in a curved pattern facing a corner of the film in close proximity to the corner of the panel to redistribute the light emitted from the light output surface.

Abstract: Disclosed is to decrease a fabrication cost and reduce a thickness of a liquid crystal display device by processing light transmitted through a liquid guide plate by virtue of a single optical sheet, the optical sheet including a base film, a plurality of prism patterns extending from one side to another side of the base film, and refraction layers between the prism patterns, thereby totally reflecting light incident from the light guide plate to be supplied to a liquid crystal display panel.

Abstract: Light emitting panel assembly comprises a light emitting panel member and a light source. At least one surface of the panel member has a pattern of light extracting deformities formed by applying the deformities to the panel member and afterward permanently attaching the deformities to the panel member to become part of the assembly.

Abstract: Optical display backlight assemblies having a transmissive optical film affixed to a frame which at least partially surrounds a backlight, are disclosed. The transmissive optical film can provide an increased bending resistance to the frame. The increase in bending resistance of the frame also increases the bending resistance of a display which incorporates the backlight assemblies. The optical film can be in tension after being affixed to the frame, and the tension in the film also can result in a flatter film surface with less sag. The film can be placed in tension prior to being affixed to the frame, the frame can be elastically distorted prior to affixing the film to impart tension to the film, or the film can develop tension by shrinkage after being affixed to the frame.

Abstract: A light condensing film includes a reflective unit, a light-transmissive substrate, a plurality of lenses, and a plurality of refractive units. The reflective unit has a plurality of holes passing through the reflective unit, wherein the holes are distributed at the reflective unit. The light-transmissive substrate is disposed on the reflective unit. The lenses are disposed on the light-transmissive substrate. Moreover, the lenses respectively cover the holes of the reflective unit, and the light-transmissive substrate is disposed between the reflective unit and each of the lenses. The refractive units are disposed on the light-transmissive substrate and distributed among the lenses. The light-transmissive substrate is disposed between the reflective unit and each of the refractive units. Each of the refractive units has a light refraction plane surface. A backlight module and a liquid crystal display are also provided.

Abstract: An optical includes an optical body including a plurality of side faces where one of the plurality of side faces defines a light entrance face onto which a blue light is incident. A light exit face is connected to at least one of the side faces, and a yellow fluorescent layer is disposed on the light entrance face and is configured to convert the blue light into a white light.

Abstract: Disclosed is an optical member for use in liquid crystal displays, which can correct the light path and can minimize the loss of light, so that light in a wider angular range can be collected forwards. Even when a distance between the optical member and a light source is shortened, the optical member can exhibit good hiding performance and prevent deformation caused by heat. Upon expansion and shrinkage, the optical member is not scratched and does not generate noise at a portion in contact with a support pin.

Abstract: The present invention provides a light control film that can prevent generation of a moiré pattern when it is superimposed on another member having a regular structure while securing sufficient front luminance, and a backlight device using the same. The light control film of the present invention has a light control layer provided with an uneven pattern on a surface, and in this uneven pattern, a plurality of convexes having circular bases of approximately the same diameters are arranged so that the bases thereof should not overlap with one another and each should touch one or two or more other bases, and ratio of convexes arranged so that each of circular bases thereof should touch both bases of two convexes of which bases touch each other is controlled to be 50 to 92% among the total convexes arranged. The backlight device of the present invention is a backlight device incorporated with the aforementioned light control film.

Abstract: The present invention relates to a lighting system (100) comprising at least one light source (101), a light guide (102) which is arranged to receive light emitted by the light source(s) (101) and at least one light extracting member (103). The light extracting member(s) (103) is adapted to extract light from the light guide, and is removably arranged on a surface of the light guide (102). The light extracting member is removably arranged on the light guide meaning that it may be detached from and moved to a different position on the light guide. Light may thus be extracted at any desired position, and this allows for a controlled and variable extraction of light.

Abstract: A brightness enhancement film (BEF) includes a substrate, a prism layer, a connection structure layer, and a micro lens layer. The prism layer is disposed on the substrate, the micro lens layer is disposed above the prism layer, and the connection structure layer is disposed between the prism layer and the micro lens layer. The prism layer includes a plurality of prisms. Each of the prisms includes a plurality of prism units. The micro lens layer includes a plurality of micro lens units. The connection structure layer includes a plurality of connection structure units. Each of the connection structure units connects the prism unit and the micro lens unit. A side surface of each of the connection structure units is a curved surface, and the curved surface extends from the micro lens unit to the prism unit. A backlight module including the brightness enhancement film is also provided.

Abstract: An image reading apparatus includes: a light emitting element array that includes plural light emitting elements arranged in line in a first scan direction of a document; a guiding unit that guides light entering from the light emitting element array, and that emits the light toward a reading position of the document while diffusing the light; a light receiving unit that receives reflected light from the reading position irradiated with the light from the light emitting element array through the guiding unit; and a scan unit that moves the reading position of the document in a second scan direction, the reading position being a position read by the light receiving unit.

Abstract: A light-emitting diode (LED) device and manufacturing methods thereof are provided, wherein the LED device comprises a substrate, a first type conductivity semiconductor layer, an active layer, a second type conductivity semiconductor layer, a transparent conductive oxide stack structure, a first electrode, and a second electrode. The first semiconductor layer on the substrate has a first portion and a second portion. The active layer and the second semiconductor layer are subsequently set on the first portion. The transparent conductive oxide stack structure on the second semiconductor layer has at least two resistant interfaces. The first electrode is above the second portion, and the second electrode is above the transparent conductive oxide stack structure.

Abstract: Various embodiments comprise light recycling films comprising an array of parallel ridges and grooves that form prisms that selectively reflect or transmit light. In some embodiments, the light recycling film may be used in displays that include spatial light modulators comprising a plurality of pixels. The light recycling film can limit the field-of-view of the display and enhance the luminance within that field-of-view. Various embodiments comprising multiple arrays of ridges and/or grooves can enhance uniformity of illumination of the pixels in the spatial light modulator and reduce Moiré effects.

Abstract: The present invention provides a planar lighting device (1) including: a laser light source (12) which emits a linearly-polarized laser beam; an optical member (13) which receives the laser beam, then parallelize the laser beam, and emits the parallelized laser beam; and a first plate-shaped light guide (20) which receives the parallelized laser beam from an end face portion (20d) and emits the parallelized laser beam from a first major surface (20b). The first light guide includes an optical element (20a) which receives the linearly-polarized parallelized laser beam propagated through the first light guide and emits at least a part of the linearly-polarized parallelized laser beam in a direction substantially vertical to the first major surface. The present invention also provides a liquid crystal display device (3) using the planar lighting device (1) as a backlight lighting device.

Abstract: A backlight unit for a liquid crystal display device includes a reflector having a plurality of grooves and one or more light emitting diodes within each of the grooves.

Abstract: An illuminator according to the present invention includes a backlight (110) for emitting light containing first and second polarization components having polarization directions which are orthogonal to each other; and a selective reflection polarizer (120) having a reflectance for the first polarization component which is higher than a transmittance for the first polarization component, and having a transmittance for the second polarization component which is higher than a reflectance for the second polarization component. The selective reflection polarizer (120) includes a transparent substrate (122) and a plurality of metal wires (124) arrayed on the transparent substrate (122). The ratio of a width of the metal wires (124) to a pitch of the metal wires (124) is greater than 30% and equal to or less than 42%, and the backlight (110) has a reflectance of 0.6 or more.

Abstract: A light source comprising sidelight type backlight light guide plate (L), wherein a transmittance angle dependent layer (T1) which transmits normally incident light and reflects obliquely incident light is disposed on one surface of the sidelight type backlight light guide plate (L), and a reflection plate (R) having a repetitive slope structure is disposed on the other surface of the sidelight type backlight light guide plate (L). The invention light source is less in absorption loss due to repetition of light reflection and the like.

Abstract: An optical substrate having a structured surface that enhances brightness and reduces moiré effect. The optical substrate has a three-dimensionally varying, structured light output surface that comprises an irregular prismatic structure. The irregular prismatic structure may be viewed as comprising longitudinal prism blocks or rows thereof, arranged laterally defining peaks and valleys. Adjacent peaks, adjacent valleys, and/or adjacent peak and valley may be parallel or non-parallel, in an orderly, semi-orderly, random, or quasi-random manner. The lateral adjacent peaks, adjacent valleys, and/or adjacent peak and valley are not parallel. The adjacent irregular prism blocks may be irregular longitudinal sections having the same length, or random or quasi-random irregular sections having different lengths. The facets of each prism block may be flat, or curved (convexly and/or concavely).

Abstract: 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.

Abstract: Articles and methods of making an articles having at least one convexity or at least one concavity are described. A first article having at least one concavity is prepared using a molding surface that includes at least one gas bubble. A second article having at least one convexity is prepared using the first article as a mold.

Abstract: To provide a backlight device with which a color hue and a color purity of a display panel can be improved while suppressing the lowering of the brightness of the display panel. A backlight device (20) comprises a pseudo white LED (21), a light guide plate (22), and a dichroic filter (25) which reflects a light with a predetermined wavelength among the light emitted from the pseudo white LED at a predetermined ratio. The dichroic filter is configured so that the light reflectance changes when the incident angle of the light is changed and a tilt angle to a light emitting surface (21e) of the pseudo white LED can be adjusted.

Abstract: A high quality surface light source in which various kinds of unevenness in luminance due to use of small number of spot-like primary light sources for reducing power consumption is eliminated, and a light guide for use therein. The planar light guide (4) guides light emitted from a plurality of spot-like primary light sources (2) and has an incoming end face (41) of lights emitted from the primary light source (2) and an outgoing face (43) of guided light. A high light diffusion region (431) extends substantially along the direction of directivity of light entering the light guide (4) in a plane extending along the outgoing face (43), in the vicinity of the incoming end face of at least one of the outgoing face (43) and its rear surface (44) on the opposite side. The high light diffusion region (431) has a mean inclination angle larger than that of an adjacent region (434).