Abstract: An image source unit that can efficiently provide image light emitted from an image source to an observer is disclosed. The image source unit includes an image source; and an optical sheet that disposed closer to an observer side than the image source. The optical sheet includes an optical functional layer that includes a light-transmitting portion having a trapezoidal cross section; and the low refractive-index portion having a wedge shape cross section. An oblique side of the wedge shape cross section of the low refractive-index portion form an angle of ?b with respect to a normal line of the sheet surface.

Abstract: The present invention provides a planar light guide film for a backlight unit having at least one point light source, the light guide film comprising a light input surface for receiving light from the point light source, a light redirecting surface for redirecting light received from the light input surface and a light output surface for outputting at least the light redirected from the light redirecting surface. The light input surface further comprises a composite lens structure having a circular tip segment with a first contact angle, and a first and second circular base segments with a second contact angle, the second contact angle being greater than the first contact angle and the second contact angle being equal to each other. Further, the circular tip segment satisfies the following equation: y1=a1+?{square root over ((r12?x2))} and the circular base segments satisfies the following equations: y2=b2+?{square root over ((r22?(x+a2)2))} y3=b3+?{square root over ((r32?(x?a3)2))}.

Abstract: The invention discloses a backlight module, a manufacturing method thereof, and an LCD device. A backlight module comprises an LGP; the light emergent surface of the LGP is covered with more than two material layers with different refractive indexes. In the invention, coatings of different refractive indexes are covered on the light emergent surface of the LGP, P light selectively transmitted, S light is reflected to the LGP for being reflected and converted to P light and then is transmitted again. The transmittance of the P light is increased by such repetition. The utilization rate of light energy is increased, and the brightness of LCDs is increased. In addition, that the material layers with different refractive indexes are covered on the light emergent surface of the LGP can be carried out using various processing modes, such as making general adhesive membranes in advance, or directly coating coatings onto the light emergent surface of the LGP, etc.

Abstract: A backlight module includes a support frame, two light sources, and a light guide film. The support frame includes a support portion and a fixing portion connected to an edge of the support portion, and the support frame defines at least one receiving groove. Each light source includes a light output surface and is received in the support frame. The light guide film includes two light input surfaces at the opposite ends thereof and two light guide portions connected with the light input surfaces. The light input surfaces of the light guide film face the light output surfaces of the light sources.

Abstract: The present invention discloses a thermoforming method and a plate assembly thereof. The thermoforming method applicable for manufacturing a plate assembly having a first plate and a second plate comprises the steps of disposing the second plate on a lamination surface of the first plate; putting the first plate and the second plate into a first mold and a second mold respectively; heating and pressing the first mold and the second mold to deform any one of the lamination surfaces of the first plate and the second plate in order to laminate the first plate and the second plate; and opening the first mold and the second mold to remove the plate assembly. The first plate can be a light guide plate, and the second plate can be a reflector.

Abstract: A method for making a light guide includes transferring ink onto a master tool having a three-dimensional feature pattern formed thereon and then transferring ink from the master tool to a transparent light guide. The method also includes curing the ink on the light guide. Alternatively, the ink may be printed onto a substrate (e.g., a film) and then laminated to the light guide.

Abstract: A backlight unit does not show decrease of brightness for the frontal direction even when made thin-shaped. An edge light type backlight unit 1 includes a light conducting plate 14, a light source 13 disposed along at least one end portion of the light conducting plate 14, and a light diffusing film 15 disposed on a light projecting surface of the light conducting plate 14. The light conducting plate 14 has a thickness of 1.0 mm or smaller, the light diffusing film 15 has a light diffusing layer formed from a binder resin and a light diffusing agent, wherein the coefficient of variation of particle size distribution of the light diffusing agent is in the range of 30% or smaller.

Abstract: A display includes a display panel and a backlight module. The backlight module is configured below the display panel and includes a light guide plate (LGP), a light source, an optical film, and a pad. The light source is located near the LGP. The optical film is configured on the LGP. The pad is located between the optical film and the display panel. A first surface of the pad is fixed to the optical film, and a second surface of the pad is slidable relative to the display panel.

Abstract: A display device including a light unit is provided. The light unit may include a light guide plate, a light emitting module, and a color coordinate conversion sheet. The light emitting module may include a plurality of light emitting diodes configured to emit light to a side of the light guide plate. The color coordinate conversion sheet may be positioned on the light guide plate to convert a color coordinate distribution of the light emitted by the light emitting module to a color coordinate distribution that falls within a target distribution range.

Abstract: The present invention relates to an optical unit and light guide plate and ink thereof. The ink includes a base resin and a plurality of fine particles. The base resin has a first refractive index. The fine particles have a second refractive index and are dispersed in the base resin. The fine particles are made of organic polymer. The difference between the first refractive index and second refractive index is less than 0.15. The use of the ink will lower the color difference and the variation of color temperature of the light guide plate or the optical unit.

Abstract: A method and a structure for improving the uniformity of light emitted from a backlight module are provided. In accordance with the present invention, a plurality of optical microstructures are intermittently distributed on an LGP of a backlight module. Each of the microstructures further includes a plurality of optical sub-microstructures. The optical microstructures and the optical sub-microstructures are distributed on the LGP with varied distribution intensities in three dimensions, such that at where the optical microstructures and the optical sub-microstructures are distributed with a larger distribution intensities the LGP refracts and reflects more light, and at where the optical microstructures and the optical sub-microstructures are distributed with a smaller distribution intensities the LGP refracts and reflects less light.

Abstract: A backlight assembly includes a light guide plate having at least five sides. There is a first side. A second side is parallel to and equal in length to the first side. A third side is perpendicular to the first and second sides. A fourth side is parallel to and shorter in length than the third side. There is at least one oblique side connecting the fourth side to the first or second side. The backlight assembly additionally includes a light source unit disposed the fourth side and the oblique side of the light guide plate.

Abstract: A patterned light guide panel, a manufacturing method thereof, and a backlight unit including the patterned light guide panel, the patterned light guide panel including a base layer; and a skin layer stacked on the base layer, the skin layer having a lenticular pattern extending orthogonally to a light entrance plane of the light guide panel.

Abstract: The present invention provides a planar light guide film for a backlight unit having at least one point light source, the light guide film comprising a light input surface for receiving light from the point light source, a light redirecting surface for redirecting light received from the light input surface and a light output surface for outputting at least the light redirected from the light redirecting surface.

Abstract: The present invention provides a planar light guide film for a backlight unit having at least one point light source, the light guide film comprising a light input surface for receiving light from the point light source, a light redirecting surface for redirecting light received from the light input surface and a light output surface for outputting at least the light redirected from the light redirecting surface.

Abstract: To obtain a white reflective film that is hard to warp and can ameliorate unevenness in the luminance even when used in such a manner as to be superimposed on a chassis having convex and concave portions for placing circuits and the like or used with an LED, and can prevent uneven close contact with a light guide plate and damage of the light guide plate, the white reflective film for edge-lit backlight is made to meets the requirements (i) to (iii): (i) the stiffness is 2 to 10 mN·m; (ii) convex portions are formed on at least one surface (A) and the maximum height of the convex portion is 15 to 60 ?m; and (iii) the cushion rate at the side of a surface (B) opposite to the surface (A) is 12% or more.

Abstract: A backlight unit is disclosed. The backlight unit includes a light emitting device package, a light guide plate including a first region, which has a recess indented in a lateral surface thereof adjacent to the light emitting device package, and a second region, an upper surface of which is stepped from the first region, and an optical sheet placed on an upper surface of the upper surface of the second region.

Abstract: The present invention relates to a light guide plate structure including a light guide layer and at least a light-barrier line. The light-barrier line includes an ink and is disposed within the light guide layer for blocking a light from being transmitted all over the light guide layer, and the light-barrier line is employed to allow the light to be just transmitted in separated regions within the light guide layer or to prevent light leakage. The present invention also relates to fabrication of the aforesaid light guide plate structure, in which, a surface modification is performed on the light guide layer, and a modified surface of the light guide layer is printed with an ink to allow the ink to permeate or corrode the light guide layer to form a light-barrier line within the light guide layer.

Abstract: Optical constructions use a low index of refraction layer (120) disposed between a low absorption layer (101) and a high absorption layer (103) to increase confinement of light to the low absorption region of the optical constructions. Low index layers can be used in optical constructions that have multi-tiered light confinement. In these constructions, a first tier of reflection is provided when light is reflected at the surface of a low index optical film which is disposed directly or indirectly on a light guide (110). A second tier of reflection occurs at the surface of a light redirecting film having appropriately oriented refractive structures.

Abstract: An optical film includes a body and a plurality of first linear protrusions. The body has a first surface and a second surface opposite to the first surface. The first linear protrusions are disposed on the first surface, and each first linear protrusion is extended along a first direction and has a first curvy ridge line departing from the first surface, wherein the first curvy ridge lines are concave towards a fixed direction. When the first curvy ridge line is located on a suppositional plan, the suppositional plan is not parallel to the first surface. A ratio of a maximum distance between each of the first curvy ridge line and the first surface over a minimum distance between the corresponding first curvy ridge line and the first surface is greater than 1 but less than 8.

Abstract: A microstructural polarized light-guide device comprises an unpolarized light source module, a subwavelength polarization beam splitter structure and a polarization conversion module, the unpolarized light source module comprises a light-guide plate and a light source at the edge of the light-guide plate, the material of the light-guide plate is PMMA with the characteristic of high transparency, the surface of the light-guide plate has a plurality of extraction patterns, the polarization beam splitter structure is a nano-scale structure and comprises a dielectric nanograting layer and a metallic nanograting layer, and the dielectric nanograting layer and the metallic nanograting layer are vertically stacked with each other, the dielectric nanograting layer is integrated with a surface opposite to the surface with the plurality of extraction patterns, the polarization conversion module is disposed on the surface with the plurality of extraction patterns of the light-guide plate.

Abstract: Lightguides are disclosed. More particularly, lightguides that include a lightguiding layer and a light extracting layer having a structured surface are disclosed. The light guiding layer is optically coupled to a first set of structures of the structured surface at given locations, and is not optically coupled to a second set of structures at given locations, thereby producing total internal reflection at the second locations. The selective optical coupling may be achieved by a number of different contemplated means as discussed herein. The lightguides allow for distribution of light along with redirection towards an image viewer without a number of commonly required optical elements in backlights.

Abstract: A display apparatus includes a display panel, a light guide plate, a frame and an optical film disposed between the display panel and the light guide plate. The display panel is defined to have a display area and a non-display area adjacent to the display area. The frame surrounds the light guide plate, the optical film and the display panel. The frame includes a sidewall and a support structure extending from an inner surface of the sidewall to above the light guide plate. The support structure includes a light shielding part, a first support part configured to support the optical film. The light shielding part is connected to the first support part. A light-pervious area is formed between the light shielding part and the optical film. The first support part is under cover of the non-display area.

Abstract: A LGF roll-to-roll manufacturing includes the steps of: preparing a first optical layer with a first surface and a second surface; mechanically extruding a first integrated microstructure on the first surface of the first optical layer; subsequently coating a second optical layer on the first or second surface of the first optical layer; and curing the second optical layer to directly form a second microstructure on the first or second surface of the first optical layer; wherein the first integrated microstructure and the second microstructure are separately formed at a time to provide a light guide film structure. In an embodiment, an additional optical layer is provided on the first optical layer.

Abstract: A laminated film for a reflecting plate is provided that comprises a layer A and a layer B, the layer A comprising a polyester that comprises substantially no antimony element and preferably comprises 1 to 25 wt % of inert particles having an average particle diameter of 0.3 to 3.0 ?m and the layer B being in contact with the layer A and comprising a polyester which preferably comprises 31 to 80 wt % of inert particles having an average particle diameter of 0.3 to 3.0 ?m. This laminated film has a practically satisfactory capability of reflecting visible light, can be produced stably even if inert particles are added in high concentration, hardly has streak-like defects, and can be suitably used as a substrate for a reflecting plate for a liquid crystal display or an internally illuminating electrical billboard.

Abstract: This invention relates to film layer which is suitable for use in a light guide plate and methods of forming said film layer and light guide plate. The invention also relates to the light guide plate and light guide devices made therefrom. The film and light guide plate are suitable for use in a range of applications, particularly in connection with the backlighting of displays, for example, liquid crystal displays.

Abstract: A backlight module includes a reflector, a light-guiding sheet, a light-emitting element, and a plurality of first adhesive materials. The reflector has a reflecting surface and the light-guiding sheet is disposed on the reflecting surface. The light-emitting element is disposed on the reflecting surface and located beside the light-guiding sheet. The first adhesive materials are disposed between the reflecting surface and the light-guiding sheet, and adhere the reflecting surface, the light-guiding sheet, and the light-emitting element.

Abstract: In at least some embodiments, a film for use with an edge-lit backlight includes a substrate. The film also includes a graphics layer and light-extraction features in contact with the substrate. The graphics layer and the light-extraction features are on opposite surfaces of the substrate.

Abstract: A box includes a lightguide in the form of a thin plate having two opposed main faces and at least two edges, the lightguide having a light-diffusing optical structure on one of the faces. Light-emitting diodes are placed linearly along at least one of the edges of the lightguide, the light emitted by the light-emitting diodes illuminates the lightguide via the edge, and is being diffused by that face of the lightguide having the optical structure. The light emitting diodes placed along each of the edges of the lightguide are organized in at least two rows and in such a way that a light-emitting diode in one row supplied by an electric power supply is immediately followed by a light-emitting diode in the other row supplied by another electric power supply.

Abstract: A local dimming side-lighting light guide plate and a local dimming side-lighting backlight module are disclosed. The light guide plate includes a light guide plate body and a first medium, wherein the refractive index of the light guide plate body is greater than the refractive index of the first medium. The light guide plate body includes a plurality of gaps parallel with each other, wherein the first medium is disposed in those gaps. The light guide plate body further includes a light entrance end, wherein the gaps extend in directions both away and toward the light entrance end. Furthermore, an active region is defined on the light guide plate body and the gaps are located in the active region.

Abstract: A liquid crystal display contains a light source, a light guide panel that directs light from the light source towards a display panel, and optical sheets containing a diffusion sheet that spreads the light from the light guide panel and at least one prism sheet that redirects light from the diffusion sheet in a direction substantially perpendicular to the display panel. The optical sheets contain a region adjacent to the light source that has a hardened part that substantially prevents heat from being transferred to a display region of the optical sheet corresponding to the display region of the display panel and minimizes the temperature difference across the display region. The hardened part is formed on at least opposing sides of the optical sheets, overlaps a non-display region of the display panel and is bent or contains a convex part that projects towards the display panel.

Abstract: This disclosure provides systems, methods and apparatus for providing illumination by using a light guide to distribute light. In one aspect, a passivation layer is attached to the light guide of an illumination device. The passivation layer may be an optically transparent moisture barrier and may have a thickness and refractive index which allows it to function as an anti-reflective coating. The passivation layer may protect moisture-sensitive underlying features, such as metallized light turning features that may be present in the light guide. The light turning features may be configured to redirect light out of the light guide. In some implementations, the redirected light may be applied to illuminate a display.

Abstract: This disclosure provides systems, methods and apparatus for providing illumination by using a light guide to distribute light. In one aspect, the light guide includes a light turning film over an optically transmissive supporting layer. The light turning film may be formed of a material deposited in the liquid state. The light turning film may be formed of a photodefinable material, which may be glass, such a spin-on glass, or may be a polymer. In some other implementations, the glass is not photodefinable. The light turning film may have indentations that define light turning features and a protective layer may be formed over those indentations. The protective layer may also be formed of a glass material, such as spin-on glass. The light turning features in the light guide film may be configured to redirect light out of the light guide, for example, to illuminate a display.

Abstract: A backlight module can be used in a dual display module and capable of blurring the shadow image produced by the sub display window in the main display window, while the main display window is displaying images, is disclosed. The disclosed backlight module comprises: a light emitting unit, a first frame located on one side of the light emitting unit and a first display window is enclosed by the first frame, a second frame located on the other side of the light emitting unit opposing to the first frame and a second display window is enclosed by the second frame, and a light diffusing plate, wherein the display area of the second display window is larger than the display area of the first display window. Besides, the light diffusing plate has a smooth surface and a rough surface respectively, while the rough surface is facing the light emitting unit.

Abstract: The invention relates to light guide plates, which are suitable for backlighting LCD monitors as well as information and advertising signs and which are illuminated at the edges and re-emit the light fed at the edges via at least one of the two surfaces located perpendicular to the edges. For the light of a light source that is fed at the edges to be able to leave the light guide plate again via one of the surfaces by overcoming total reflection, the light rays in the light guide plate have to be deliberately deflected. At one of the two surfaces of the light guide plate, the light guide plates are provided with optical impurities (2), which are protected against damage by a film (5). Furthermore, a method for the simplified application of said impurities is provided.

Abstract: In a light-guide module, a method of manufacturing the light-guide module and a backlight assembly having the light-guide module, the light-guide module includes a light-guide plate (“LGP”) and a thin-film layer. The LGP has a light-incident surface into which lights are incident and a light-exiting surface through which lights exit. The thin-film layer is formed on the LGP. The thin-film layer has a concavo-convex pattern formed on an opposite surface of a surface contacting the LGP. Accordingly, a thin-film layer having a concavo-convex pattern is formed on a light-incident surface of an LGP, so that a reflectance of light incident into the LGP may be decreased. Moreover, a light amount transmitted through the LGP is increased in accordance with a decreasing of reflectance, so that a light transmittance may be increased in total.

Abstract: A light guide plate and a manufacturing method thereof are disclosed. The light guide plate includes a substrate, a screen-printed layer, and a light-solidified layer. The substrate has a first surface and a second surface, and the first surface and the second surface are opposite. The screen-printed layer is formed on the first surface of the substrate by a screen-printing process. The light-solidified layer is formed on the second surface of the substrate by a light-solidification and imprinting process. The screen-printed layer has a plurality of screen point patterns. The light-solidified layer has a plurality of micro-structures.

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 lightguide (3690) is disclosed. The lightguide includes a light guiding layer (3610) for propagating light by total internal reflection, and an optical film (3640) that is disposed on the light guiding layer. The optical film includes a plurality of voids, an optical haze that is not less than about 30%, and a porosity that is not less than about 20%. Substantial portions of each two neighboring major surfaces (3614, 3642) in the lightguide are in physical contact with each other. The lightguide can be used as blacklight in a display system.

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 one-way see-through illumination system is constructed from a light guide panel, a front-illuminable image film, and a light injector. The light injector injects light into the light guide panel at a suitable angle for total internal reflection of the injected light at the surfaces of the light guide panel. The image film includes a half-toned front-illuminable image pattern that extracts light from the light guide panel. When active, light from the light guide panel front illuminates the image pattern for viewing by a front-side view, while a back-side viewer can see through the image pattern.

Abstract: A display panel and a light source device used therein are provided. The display panel includes a light-guide thin-film circuit substrate, a light source and a polarizing layer. The light-guide thin-film circuit substrate has a light entrance end and a light exit top surface, and the light source is disposed corresponding to the light entrance end. The polarizing layer is disposed on the light-guide thin-film circuit substrate and parallels the light exit top surface of the light-guide thin-film circuit substrate. The light produced by the light source enters the circuit substrate through the light entrance end, guided and transmitted through the circuit substrate, and then leaves the circuit substrate through the light exit top surface and enters the polarizing layer. The light after passing through the polarizing layer is turned into a polarized light having flat light source effect as a backlight source for the system.

Abstract: A display panel and a light source device used therein are provided. The display panel includes a light-guide thin-film circuit substrate, a light source and a polarizing layer. The light-guide thin-film circuit substrate has a light entrance end and a light exit top surface, and the light source is disposed corresponding to the light entrance end. The polarizing layer is disposed on the light-guide thin-film circuit substrate and parallels the light exit top surface of the light-guide thin-film circuit substrate. The light produced by the light source enters the circuit substrate through the light entrance end, guided and transmitted through the circuit substrate, and then leaves the circuit substrate through the light exit top surface and enters the polarizing layer. The light after passing through the polarizing layer is turned into a polarized light having flat light source effect as a backlight source for the system.

Abstract: A surface light source device includes a diffusing member which diffuses light, a reflective member which reflects light, plural light sources provided aligned in a flat manner between the diffusing member and the reflective member, and a light control member provided between the plural light sources and the reflective member as well as arranged in a state that a gap is imposed between the reflective member and the light control member, which has a light-guiding function of guiding part of light emitted from respective light sources in an alignment direction of the light sources, in which the light control member has a rugged structure portion in which geometric shapes in cross section are continuously formed on at least one surface.

Abstract: An illumination device which can be used as a front light or a back light by improving brightness unevenness in the vicinity of an LED without dropping entire brightness and a liquid crystal display device using the same. This illumination device 10 has a light source on a light entering face 27 of a light guide plate 20 and a light guide plate 20 in which prisms 25 for reflecting by polarization or emitting light out of the light guide plate 20 are formed on a light emission face or a light reflecting face thereof and a cylindrical lens 26 for orienting and magnifying light is formed on the other face.

Abstract: A light guide device can provide a backlight for an LCD or a projection display. The light guide device includes a light-input end and an opposing end, opposing left and right sides which join the light-input end and the opposing end, and opposing front and back surfaces which join the light-input end and the opposing end. A birefringent film is provided on the opposing left and right sides of the light guide which switches a polarization of incident light. Incident light is provided at the light-input end having a right-handed circular polarization, in addition to light having a left-handed circular polarization. Light emitted from the front surface passes through a linear polarizer which selectively passes light to allow privacy of viewing by a user. The incident light can be provided at the light-input end using one or more cuboid rods, slab light guides, or discrete light sources.

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 polarization-sensitive light homogenizer and a backlight and display using the same. The homogenizer improves the spatial luminance and color uniformity, increases the luminance in a direction normal to the homogenizer and provides increased luminance through polarized light recycling within the light homogenizer and backlight. In one embodiment, the homogenizer includes a polarization-sensitive anisotropic light-scattering (PDALS) region, a non-polarization-sensitive anisotropic light-scattering region, and a substantially non-scattering region. In a further embodiment, the non-scattering region is birefringent. The spatially non-uniform incident light flux from a backlight including one or more non-extended light emitting sources is scattered efficiently by the NPDASL region and is incident on the PDALS region which backscatters light orthogonal to the polarization state desired for efficient illumination of a liquid crystal display panel.

Abstract: A light guide includes a light guide substrate having a top surface through which light is to be emitted, a bottom surface, an incident edge surface through which incident light is to be introduced into the light guide substrate, and another edge surface. The another edge surface includes at least one micro structure operative to reflect at least a portion of the incident light, which travels through the light guide substrate and is incident on the another edge surface, back within the light guide substrate.

Abstract: A transparent substrate 2, into which light from a light source 9 is introduced through at least one side, includes a transparent first glass substrate (substrate body) 5a and a low refractive index layer 6 that is disposed on the first glass substrate 5a and has a lower refractive index than the first glass substrate 5a. Moreover, a high refractive index layer 7 having a higher refractive index than the low refractive index layer 6 is disposed on the low refractive index layer 6, thereby preventing the generation of light that leaks from the first glass substrate 5a to the outside through the low refractive index layer 6.