Abstract: Embodiments of the present disclosure provide a backlight unit comprising a light emitting unit including a plurality of light emitting devices, a light conversion sheet disposed on the light emitting unit and including a plurality of light conversion patterns overlapping with the plurality of light emitting devices, and a phosphor layer disposed in a rim portion of the light conversion sheet and including a phosphor film disposed on the light conversion sheet. A display device including the backlight unit is also provided.

Abstract: An electronic device includes a light source member configured to provide a first light, a color conversion member disposed on the light source member and including a first conversion material that converts the first light into a second light and a second conversion material that converts the first light into a third light, and a low-refractive index layer disposed on the light source member and disposed on at least one of upper and lower portions of the color conversion member. The low-refractive index layer includes a matrix part, a plurality of hollow inorganic particles dispersed in the matrix part, and a plurality of void parts defined by the matrix part.

Abstract: A display apparatus includes: a display panel, a light source which emits a first color light; and a light control member which receives the first color light and emits color-converted light, the light control member including: a substrate through which the color-converted light is provided to the display panel; a first light control layer which color-converts the first color light and outputs the color-converted light; a second light control layer which reflects light having a different wavelength range from a wavelength range of the first color light; and a scattering layer which scatters light incident thereto. Within the light control member, the substrate, the first light control layer, the second light control layer and the scattering layer are disposed in order in a direction from the display panel to the light source.

Abstract: An optic for a light emitting diode array comprises an arrangement of optical structures for providing one or more down lighting distribution from the LED array; and a waveguide edge for providing one or more up-lighting distributions from the LED array. Luminaires are described comprising a light emitting diode (LED) array and the optic. Lighting systems are described comprising a plurality of the luminaires arranged over an area enclosed by walls.

Abstract: This disclosure discloses a display device including: a display panel; a backlight module including a light-emitting diode group; the display panel including a first substrate and a second substrate successively along the direction from the backlight module, wherein the first substrate includes an exposed area which is not covered by the second substrate, and an orthographic projection of the light-emitting diode group on the first substrate lies in the exposed area; a protective cover plate on the light exit side of the display panel; a housing on the side of the backlight module away from the display panel, and is grounded; and a conductive structure, wherein an orthographic projection of the conductive structure on the first substrate at least partially overlaps with the orthographic projection of the light-emitting diode group on the first substrate, and the conductive structure connects the protective cover plate with the housing.

Abstract: An LED backlight system having a plurality of backlight segments including an integral light waveguide, each backlight segment supporting a sidelight emitting LED. A light guide having a rectangular shape, a flat top surface, and a curved lower surface defines a cavity having a top and sidewalls, with the sidelight emitting LED positioned in the cavity. At least one of a reflective layer and a top out-coupling structure can be positioned between the top of the cavity and the sidelight emitting LED.

Abstract: A waveguide display includes a waveguide transparent to visible light, a first volume Bragg grating (VBG) on the waveguide and characterized by a first refractive index modulation, and a second reflection VBG on the waveguide and including a plurality of regions characterized by different respective refractive index modulations. The first reflection VBG is configured to diffract display light in a first wavelength range and a first field of view (FOV) range such that the display light in the first wavelength range and the first FOV range propagates in the waveguide through total internal reflection to the plurality of regions of the second reflection VBG. The plurality of regions of the second reflection VBG are configured to diffract the display light in different respective wavelength ranges within the first wavelength range and the first FOV range.

Abstract: A unilateral backlight and a unilateral multiview display employ an array of unilateral diffractive elements configured to provide directional light beams having a unilateral direction. A unilateral diffractive element of the unilateral diffractive element array comprises a slanted diffraction grating configured to provide a directional light beam by diffractive scattering of light guided in a light guide. The unilateral multiview display further includes light valves configured to modulate a plurality of directional light beams as multiview image having the unilateral direction.

Abstract: Disclosed is a luminaire structure, comprising at least one light guide segment having opposed surface regions and defining a dimension therebetween. At least one edge region with at least one LED array configured to form an edge-lit optical coupling with the edge region. The light guide segment further includes a first sensor passage extending between the opposed surface regions to receive a sensor. At least one of the light guide segment, the first sensor passage and/or the sensor is configured so that light delivered to the light guide segment through the edge-lit optical coupling illuminates the light guide segment with reduced optical disruption by the presence of the sensor in the first sensor passage, when compared with a non edge-lit optical coupling configuration.

Abstract: A light guide plate assembly, includes a light conductive layer and a plurality of light exit structures. The light conductive layer is configured to cause light entering the light conductive layer to be transmitted between two opposite surfaces of the light conductive layer. The plurality of light exit structures are disposed on one of the two opposite surfaces and spaced apart. The plurality of light exit structures are configured to enable a portion of the light to emit from the light conductive layer.

Abstract: The present disclosure provides a display module and a display device including the same. The display module includes a backplate, an optical film, a quantum dot film, a phosphor layer, and a light source. The optical film is disposed on the backplate. The optical film has a light incident surface, a light emitting surface, and a first side surface. The first side surface is perpendicular to the backplate, and the light emitting surface is parallel to the backplate. The quantum dot film is disposed on the light emitting surface of the optical film. The phosphor layer is disposed on the first side surface of the optical film. The light incident surface of the optical film is located on the backplate in a light emission direction of the light source.

Abstract: A quantum dot optical function panel and its preparation method comprises a functional layer, a condensation layer and a diffusion layer which compose a multilayer structure. Said functional layer is located between condensation layer and diffusion layer. The functional layer comprises a main layer and quantum dots uniformly distributed in main layer. Said condensation layer comprises a condensation substrate layer and condensation bulges distributed over the upper surface of condensation substrate layer. Said diffusion layer comprises a diffusion substrate layer and diffusion bulges distributed over the lower surface of diffusion substrate layer. The condensation layer and diffusion layer of the quantum dot optical function panel of the present invention can resist oxygen and water vapor to a certain extent, protecting the quantum dots well.

Abstract: The fingerprint sensing unit including: a substrate; a scan line disposed on the substrate and extending along a first direction; a common power line disposed on the substrate and extending along a second direction crossing the first direction; a thin film transistor connected to the scan line and the common power line; a sensing electrode connected to the thin film transistor; a first lens disposed on the sensing electrode and protruding in a direction away from the sensing electrode; and a first light blocking layer disposed on the sensing electrode and surrounding the first lens.

Abstract: Provided are an anti-peep display, a liquid crystal display device and an anti-peep component, the anti-peep display includes a backlight source, a liquid crystal display screen, and a grating layer and a black matrix layer which are arranged between the liquid crystal layer and the backlight source; the grating layer includes a grating layer controllable light-blocking area and a grating layer light-transmitting area that are alternately arranged; the black matrix layer includes a black matrix layer light-blocking area and a black matrix layer light-transmitting area that are alternately arranged; the grating layer light-transmitting area and the black matrix layer light-transmitting area are in one-to-one correspondence, and the grating layer light-transmitting area is aligned with the black matrix layer light-transmitting area corresponding to the grating layer light-transmitting area in a direction perpendicular to the liquid crystal layer.

Abstract: A display apparatus including at least one display panel, a backlight module and a first reflective layer is provided. The display panel includes first and second substrates, non-self-luminous display pixels, a light-shielding layer, first and second polarizers. The light-shielding layer includes light-shielding portions and first opening portions. The light-shielding portions respectively surround outer profiles of the non-self-luminous display pixels, and positions of the first opening portions respectively correspond to positions of the non-self-luminous display pixels. The first and second substrates are disposed between the first and second polarizers. The backlight module is disposed under the display panel. The first reflective layer is disposed between the second polarizer and the backlight module. The first reflective layer includes second opening portions, and positions of the second opening portions respectively correspond to the positions of the non-self-luminous display pixels.

Abstract: Embodiments of the disclosure provide transmitters for light detection and ranging (LiDAR). The transmitter includes a plurality of laser sources and a light modulator. Each of the laser sources includes interleaved emitting regions and gaps and is configured to provide a native laser beam in a respective incident direction. The light modulator is configured to receive the native laser beams from the plurality of laser sources in different incident directions and combine the native laser beams into a combined laser beam in a diffraction direction.

Abstract: Wide-area solid-state illumination devices and systems employing a thin and flexible sheet of an optically transmissive material having at least one broad-area surface patterned with light scattering surface microstructures such as microdots of a non-absorbing UV curable ink. Light is input into the thin and flexible sheet using a number of compact solid-state light sources, such as LEDs, optically coupled to one or more edges or to one or two of the broad-area surfaces defining the thin and flexible sheet. Each surface microstructure forms a semi-opaque layer that extracts light from the thin and flexible sheet and causes light emission from both opposing broad-area surfaces of the sheet.

Abstract: A visor for use in a vehicle is disclosed. The visor comprises a pivot rod and a first and second shell being engagable to form a visor body. The visor also comprises a vanity and a mirror having at least one clear portion arranged at or near an end thereof. The visor also comprises a circuit board secured to the first shell and a light emitting diode secured to a surface of the circuit board. The visor also comprises a ramp arranged in a back surface of the mirror wherein the ramp is aligned with at least one clear portion of the mirror. The visor mirror having a ramp arranged therein may allow for light to be redirected towards the user of the mirror from the LED.

Abstract: A lighting engine, system, and method of fabrication are described. The system includes a chassis with a ridge extending from a bottom that defines inner and outer cavities. A flexible printed circuit (FPC) is disposed in contact with a wall of the inner and outer cavities and on the ridge top and is connected to wiring retained within bosses in the outer cavity. LEDs are mounted on the FPC to emit light toward a center of the cavity. A light guide disposed has an edge that opposes the LEDs and receives light emitted by the LEDs. The FPC has a polyimide insulator coupled with a pressure-sensitive adhesive (PSA), a copper layer on the polyimide insulator, and a high-reflectivity white coverlay on the copper layer. Other apparatuses, systems, and methods are also disclosed.

Abstract: A display backlight, comprises: an excitation source, LED (146), for generating blue excitation light (148) with a peak emission wavelength in a wavelength range 445 nm to 465 nm; and a photoluminescence wavelength conversion layer (152). The photoluminescence wavelength conversion layer (152) comprises a mixture of a green-emitting photoluminescence material with a peak emission in a wavelength range 530 nm to 545 nm, a red-emitting photoluminescence material with a peak emission in a wavelength range 600 nm to 650 nm and particles of light scattering material.

Abstract: Disclosed is an optical film includes a first prism sheet including a plurality of first prisms arranged on one side of the first prism sheet, a second prism sheet including a plurality of second prisms arranged on one side of the second prism sheet, and a diffuser sheet including a plurality of first protrusions and a plurality of second protrusions arranged on one side of the diffuser sheet. The optical film is prepared to have a height of the first protrusions being greater than a height of the second protrusions. The optical film is further prepared that the first prism sheet, the second prism sheet and the diffuser sheet laminated where the first protrusions of the diffuser sheet is adhered to a side of the first prism sheet where no first prisms are arranged, and the first prisms of the first prism sheet are adhered to a side of the second prism sheet where no second prisms are arranged.

Abstract: A structure for coupling an optical signal between an integrated circuit photonic structure and an external optical fiber is disclosed as in a method of formation. The coupling structure is sloped relative to a horizontal surface of the photonic structure such that light entering or leaving the photonic structure is substantially normal to its upper surface.

Abstract: A privacy display comprises a spatial light modulator and a compensated switchable liquid crystal retarder arranged between first and second polarisers arranged in series with the spatial light modulator. In a privacy mode of operation, on-axis light from the spatial light modulator is directed without loss, whereas off-axis light has reduced luminance. The visibility of the display to off-axis snoopers is reduced by means of luminance reduction over a wide polar field. In a wide angle mode of operation, the switchable liquid crystal retardance is adjusted so that off-axis luminance is substantially unmodified.

Abstract: A planar lighting device according to an embodiment has a light source, a light guide plate, and a light shielding sheet. The light guide plate has an light-incident surface on one edge surface and a light-emitting surface on one main surface. The light guide plate emits light, which is emitted by the light source and entered from the light-incident surface, from the light-emitting surface. The light guide plate further has a plurality of through-holes that are spaced apart from each other in a direction intersecting a direction in which light emitted by the light source enters into the light-incident surface. The through-holes pass through the light guide plate in a thickness direction. The light shielding sheet is disposed so as to cover a portion on the light-emitting surface between adjacent through-holes.

Abstract: A light-emitting disclosure (LED) and an LED array are disclosed. The LED includes a semiconductor junction for emitting light and an optical surface coupled to the semiconductor junction for outputting at least a portion of the light. The optical surface can include a grating structure configured to increase the portion of the light outputted by the optical surface, and/or a redirecting structure configured to redirect the portion of the light to form an output optical beam.

Abstract: An illumination system is disclosed that is arranged to compensate for variations in brightness between different LEDs in the system. The system may include an array of LEDs coupled to a light guide that is provided with a plurality of light extraction patterns. Each light extraction pattern may include a plurality of light extraction features. The light extraction patterns may differ from one another in the density of the features. Light extraction patterns having a greater density may be combined with LEDs in the array that are less bright, whereas light extraction patterns having a lower feature density may be combined with LEDs in the array that are brighter.

Abstract: A display device is disclosed, including: a display panel including a first substrate with a first side surface; a backlight module disposed opposite the display panel and including a light guide having a second side surface; and a first adhesive layer attached to the first side surface and the second side surface.

Abstract: A backlight unit includes a light source having an emission region, a wiring board having the light source mounted thereon, a light guide plate having a side surface into which light from the light source enters, and a front surface from which the light exits, a light shielding adhesive tape adhering to the wiring board, and an optical sheet which overlaps with the front surface of the light guide plate. The front surface of the light guide plate includes an effective region serving as a planar light source and a light entering region ranging from the side surface to the effective region. The wiring board and the light-shielding adhesive tape each have a part positioned in the light entering region, and the optical sheet is arranged from the effective region to the light entering region. An end portion of the optical sheet overlaps with the light-shielding tape.

Abstract: A display device includes: a light source configured to generate a light; a display panel configured to display images using the light; a light guide having at least one surface adjacent the light source; and an optical member between the light guide member and the display panel. The optical member includes: a low refractive index layer on a light exit surface of the light guide member; a first cover layer on the low refractive index layer; and a light conversion layer on the first cover layer and configured to convert a wavelength band of an incident light.

Abstract: An optic for a light emitting diode array comprises an arrangement of optical structures for providing one or more down lighting distribution from the LED array; and a waveguide edge for providing one or more up-lighting distributions from the LED array. Luminaires are described comprising a light emitting diode (LED) array and the optic. Lighting systems are described comprising a plurality of the luminaires arranged over an area enclosed by walls.

Abstract: This disclosure describes implementation of a display with resolution of one to ten million color pixels per square inch of display area. Fabrication in a CMOS foundry uses silicon waveguide technology. Red, green, and blue light are distributed via waveguide to all display pixels. Optical modulators in each pixel control image color and luminance. A photo diode is incorporated into each display pixels to enable uniformity correction of pixel luminance and color.

Abstract: The present invention provides a display device including a first display panel and a lens layer. The first display panel is provided with a first display area and a first frame located at a side of the first display area. The first display area includes a plurality of first pixels, and some of the first pixels form a first image adjustment area adjacent to the first frame. When the first image adjustment area receives a same first image source signal provided to the first display panel, brightness generated by the first pixels in the first image adjustment area is greater than that of the other first pixels in the first display area. The lens layer covers the first image adjustment area and the first frame and includes a plurality of lenses arranged side by side and respectively extending in an extending direction of the first frame.

Abstract: Disclosed herein are structures, devices, and systems for detecting touch and force inputs at multiple sensing locations on a surface of an electronic device using waveguide-based interferometry. A laser light source, such as a VCSEL, inserts light into a waveguide positioned adjacent to the sensing locations, and an input at a sensing location alters the inserted light in the waveguide allowing for determination of the input's touch or force at the sensing location. Wavelength modulation of the inserted light allows isolation in frequency of the signals from each sensing location. Optical phase locking can be used to lock an absolute distance beat frequency corresponding to a stationary reference point in the waveguide.

Abstract: A light guide plate formed from a panel transparent to visible light has a first incidence surface provided to form a sidewall of the light guide plate that faces a light source configured to emit visible light, and a plurality of prisms provided in a predetermined region on one surface of the light guide plate. The prisms include a reflection surface that reflects the visible light emitted from the light source and entering the light guide plate from the first incidence surface toward another surface of the light guide plate. The predetermined region is divided into a plurality of local regions corresponding to a plurality of tones in the predetermined region when seen from a predetermined viewpoint, and in each local region, the orientation of the reflection surface of the prisms distributed in the local region is established in accordance with the tone corresponding to that local region.

Abstract: Disclosed are a light guide plate and a backlight module including the light guide plate. The light guide plate includes multiple light guide plate segments, each of which is linear, and the multiple light guide plate segments are connected with each other successively to form an entire light guide plate. The entire light guide plate extends in a curved shape along a length direction thereof, and the entire light guide plate includes a light exiting surface and a light entering surface which is arranged at a side of the light exiting surface. The backlight module includes a light source, a plurality of quantum dot glass tubes which are connected with each other successively, and a light guide plate. The light source and the light entering surface of the light guide plate are arranged corresponding to each other, and each of the quantum dot glass tubes is arranged between the light source and a light guide plate segment correspondingly.

Abstract: A backlight module, a display module and a display device are disclosed. The display module includes a backlight module; a display panel located at a light exit side of the backlight module; and a first optical adhesive layer located between the backlight module and the display panel. The display panel and the backlight module are adhered to each other through the first optical adhesive layer.

Abstract: A vehicle display device is configured for installation to a vehicle and includes a mirror element configured to reflect external light entering from a front surface toward the front surface, and a light emitting device. The light emitting device includes a light source configured to emit light, and a light guide element configured to guide incident light from the light source. The light guide element includes an emission surface configured to output incident light, and an optical-path changing portion configured to change the optical path of incident light toward the emission surface. The mirror element and the light guide element are stacked at an outer surface of the mirror element to allow the optical-path changing portion to change the optical path.

Abstract: A lighting fixture appears as a skylight and is referred to as a skylight fixture. The skylight fixture has a sky-resembling assembly and a plurality of sun-resembling assemblies. The sky-resembling assembly has a sky-resembling optical assembly and a sky-specific light source, wherein light from the sky-specific light source exits a planar interior surface of the sky-resembling light optical assembly as skylight light. The plurality of sun-resembling assemblies are arranged adjacent one another and extend downward from a periphery of the sky-resembling assembly. Each of the plurality of sun-resembling assemblies has a sun-resembling optical assembly and a sun-specific light source, wherein light from the sun-specific light source exits a planar interior surface of the sun-resembling optical assembly as sunlight light.

Abstract: A method of anti-fouling of a surface while said surface is at least partially submersed in an liquid environment, comprising: providing an anti-fouling light; distributing at least part of the light through an optical medium comprising a silicone material and/or UV grade fused silica; emitting the anti-fouling light from the optical medium and from the surface.

Abstract: A display device includes a backlight and a display panel on the backlight. The backlight includes a light source to provide a first light, and an optical wavelength converter to receive the first light and emits a second light. The optical wavelength converter includes a light emitting part having a plurality of excitation light emitting bodies to be excited by receiving the first light, and thereby emit the second light, and a light absorbing part including a plurality of absorbers provided on the light emitting part to receive the second light and absorb a portion of the second light having a wavelength of about 550 nm to about 650 nm.

Abstract: A display device and a display method are provided. The display device includes: a first substrate; a light guide plate opposite to the first substrate; a grating layer including gratings, on the light guide plate and at a side of the light guide plate facing towards the first substrate, wherein each grating corresponds to one pixel; and a light source at a lateral surface of the light guide plate parallel to a light emergent direction of the display device, wherein the light source includes monochromatic light emitting components and an optical component, lights of different colors emitted by the monochromatic light emitting components are incident into, via the optical component, the light guide plate at different incident angles and are emergent from the gratings, and the incident angles are greater than a total reflection angle of the light guide plate.

Abstract: A display device is disclosed. The display device according to the present disclosure includes a frame; a light assembly disposed in at least one edge area of the frame; a panel positioned in front of the frame; and a light guide plate positioned between the frame and the panel so that light emitted from the light assembly is transferred to the panel, wherein the light assembly includes a light source and a filter positioned at a light path between the light source and the light guide plate and changing characteristics of light emitted from the light source. The present disclosure can improve display quality of the display device by changing characteristics of light emitted from the light source.

Abstract: An illumination device includes a plurality of light-emitting elements (LEEs); a light guide extending in a forward direction from a first end to a second end to receive at the first end light emitted by the LEEs and to guide the received light to the second end; an optical extractor optically coupled to the second end to receive the guided light, the optical extractor including a redirecting surface to reflect a first portion of the guided light, the reflected light being output by the optical extractor in a backward angular range, and the redirecting surface having one or more transmissive portions to transmit a second portion of the guided light in the forward direction; and one or more optical elements optically coupled to the transmissive portions, the optical elements to modify the light transmitted through the transmissive portions and to output the modified light in a forward angular range.

Abstract: A display which is able to dissipate heat from points of concentrated heat generation in a backlight module is provided, which includes the backlight module and a cooling module. The cooling module includes a cooling member and a buffer member. The cooling member is a flat sheet, and the cooling member is made of heat-dissipation material. The cooling member is positioned on a surface of the backlight module. The buffer member is made of soft material with adhesiveness and with elasticity. The buffer member is directly adhered on the cooling member through the adhesiveness of the buffer member to fix the cooling member to the backlight module.

Abstract: A deformed liquid crystal display device including a cover bottom; a backlight unit on the cover bottom; the backlight unit including: a LED assembly including a plurality of LEDs; a reflector comprising a bottom surface, and side portions bent upward from edges of the bottom surface; a diffuser, disposed above and spaced apart from the plurality of LEDs and the bottom surface of the reflector; a liquid crystal panel disposed on the backlight unit, wherein the reflector has at least one corner having an acute angle formed by two adjacent side portions, wherein a brightness enhancing portion is disposed at the corner having the acute angle.

Abstract: A backlight module includes an optical assembly, a plurality of first light units, and a light guide plate. The optical assembly includes a base film, a first conductive layer, and a first reflective layer. The first conductive layer is disposed on the base film, and the first reflective layer is disposed on the first conductive layer. The first reflective layer includes a first part and a second part. The first part is connected to the second part. The plurality of first light units are disposed on the first part and extend through the first part to be electrically connected to the first conductive layer. The light guide plate is disposed on the second part.

Abstract: A display device has a plurality of sub-pixels, and includes a circuit substrate, a plurality of micro light-emitting semiconductor elements, a light conversion layer and an opposite substrate. The micro light-emitting semiconductor elements are disposed separately on the circuit substrate and configured corresponding to the sub-pixels. The light conversion layer has a plurality of light conversion portions disposed respectively corresponding to at least partial of the micro light-emitting semiconductor elements. The light emitted from the micro light-emitting semiconductor element corresponding to the sub-pixel passes through the light conversion portion to generate white light. The opposite substrate is disposed at one side of the light conversion layer away from the circuit substrate. In another display device, the light emitted from the micro light-emitting semiconductor element passes through the light conversion layer to generate white light.

Abstract: An illumination system is disclosed that is arranged to compensate for variations in brightness between different LEDs in the system. The system may include an array of LEDs coupled to a light guide that is provided with a plurality of light extraction patterns. Each light extraction pattern may include a plurality of light extraction features. The light extraction patterns may differ from one another in the density of the features. Light extraction patterns having a greater density may be combined with LEDs in the array that are less bright, whereas light extraction patterns having a lower feature density may be combined with LEDs in the array that are brighter.

Abstract: The invention provides a lighting device (100) configured to provide lighting device light (101). The lighting device (100) comprises a plurality of light sources (200) configured to provide light source light (201), the plurality of light sources (200) comprising at least a first light source (210) configured to generate first light source light (211) and a second light source (220) configured to generate second light source light (221).

Abstract: An edgelit recessed luminaire includes a housing that defines an inner cavity and has a pair of side panels. Each side panel includes one or more torsion spring receivers. Further, the edgelit recessed luminaire includes a light engine that includes torsion springs that are pivotally coupled to the light engine via torsion spring brackets. The light engine is removably coupled to the housing such that in an open position, the light engine is suspended from the housing via the torsion springs providing access to the inner cavity and in a closed position, the light engine covers the inner cavity of the housing. Alternatively, a linear light module is removably coupled to the housing.