Abstract: A positioning device which positions an optical film set in a backlight module is proposed. The backlight module includes a back plate. The optical film set is disposed on the back plate. The positioning device includes an assembly sheet and a fixing device. The assembly sheet is disposed at one end of the positioning device for penetrating an opening formed on at least one edge of the optical film set. The fixing device is used for fixing the positioning device to a side plate of the back plate. A backlight module in which the positioning device is used and a liquid crystal display (LCD) in which the positioning device is used are proposed as well. Owing to the present invention, the positioning of each optical film in the optical film set is simple. Also, an LCD featuring a thin bezel design is implemented.

Abstract: A display device (10, 20, 30) is provided, the display device (10, 20, 30) comprising an LED array (33, 35, 12) working both as a backlight source for an LCD panel (31) and as an ambient light source providing ambient light with properties dependent on the image content presented by the LCD panel (31). A corresponding method and computer program product is also provided.

Abstract: A backlight unit is provided that comprises a first layer, a plurality of light sources on the first layer, a reflection layer on the first layer, the reflection layer surrounding the plurality of light sources, a second layer on the reflection layer and the plurality of light sources, and a third layer on the second layer, the third layer comprising a plurality of light shielding patterns arranged to correspond to the light sources, respectively, and a light transmitting region surrounding the plurality of light shielding patterns, wherein the light transmitting region includes first regions adjacent to the light sources and second regions away from the light sources, and wherein the first regions are smaller in area than the second regions. A display apparatus comprising the backlight unit is provided as well.

Abstract: A display apparatus comprises a display panel. The display panel emits a green light having a green energy and a green point of the CIE 1931 xy chromaticity under the operation of the highest gray level of a green image, and emits a blue light having a blue energy and a blue point of the CIE 1931 xy chromaticity under the operation of the highest gray level of a blue image. The ratio of the green energy to the blue energy is between 0.7 and 1.2. In the CIE 1931 chromaticity diagram, the coordinates of the blue point are bounded by the equation: y=?168.72x2+50.312x?3.635 and the equation: y=?168.72x2+63.81x?5.9174, while y is between 0.04 and 0.08.

Abstract: An optical sheet is provided. The optical sheet includes: a light-transmissive base; and an optical functional layer provided to at least one surface of the base, in which the base is composed of a stack of transmissive sheets bonded while placing an adhesive material layer in between.

Abstract: A backlight system and the liquid crystal device are disclosed. The backlight system includes a back plate, optical films and a protecting member. The back plate includes at least two main connecting members, and at least one main connecting member includes a top plate and a down plate. The protecting member includes a first portion and a second portion. The protecting member is fixed on the top plate so that the first portion is arranged above the top plate to separate the top plate and the liquid crystal panel above the top plate. The second portion is arranged on a down surface of the top plate to separate the top plate and the optical films. In this way, the assembling efficiency is high and the labor cost is low. In addition, the risk of scratching the liquid crystal panels and the optical films during the assembling process of the backlight system is also reduced.

Abstract: A backplane for a backlight module is disclosed. The backplane includes a light incident support for arranging a light source of the backlight module. The light incident support includes an aeration tank for dissipating heat generated from the light source, a sidewall and a connected bottom, wherein the light incident support is formed by extruded alumni. A liquid crystal device and a backlight module are also disclosed. The above backplane, backlight module and liquid crystal device may reduce the cost and enhance the heat dissipation performance.

Abstract: A backlight unit includes a substrate, a plurality of first light sources, a plurality of second light sources, a first wiring portion, a second wiring portion, a first connector and a second connector. The first light sources are disposed on the substrate. The second light sources are disposed on the substrate in a single line. The first wiring portion extends along a length direction on a first peripheral area of the substrate and is connected to the first light sources. The second wiring portion extends along the length direction on a second peripheral area of the substrate and is connected to the second light sources. The first connector is disposed on a first end portion of the substrate and is electrically connected to the first wiring portion. The second connector is disposed on a second end portion of the substrate and is electrically connected to the second wiring portion.

Abstract: The present invention discloses a backlight module, which includes a light source and an aluminum extrusion. The aluminum extrusion forms at least one thermal chamber. The thermal chamber is a penetrating hollow structure having an opening. The present invention also discloses a liquid crystal display device having the backlight module. Practicing the backlight module of the present invention and the liquid crystal display device using the backlight module allows a channel for air flow to be formed in the interior of the thermal chamber to enhance heat dissipation performance, eliminate the operations of forming a light bar through packaging the light source and an MCPCB and bonding the light bar to the aluminum extrusion, decrease thermal resistance interface, and saves assembling material.

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

Abstract: A light source apparatus according to the present invention, includes: a light source substrate on which one or more emission units are located; an optical sheet configured to reflect light from the emission unit; and a detection unit configured to detect reflected light reflected by the optical sheet, wherein the detection unit is located in a position where an amount of change in a detected value due to deflection of the optical sheet when one emission unit is turned ON is a predetermined value or less.

Abstract: A front frame of a flat panel display having positioning structure allows a LCD cell to be positioned and mounted thereon along an assembly direction. A restraining frame may be further incorporated for positioning and spacing purposes for each component of the display. Optical films, a light guide component, a backlight unit, and a reflector of the flat panel display are then mounted in a row along the assembly direction on the restraining frame or the front frame, where the backlight unit and/or the reflector may be fixed to a back cover of the backlight module in advance. Finally, a speaker, wiring of the display, circuit boards, and a board cover are assembled to the front frame and the back cover.

Abstract: A display device where concentration of a stress in a display panel is suppressed, to allow improvement in display quality, reliability and the like. A display device includes a display panel, an adhesive layer and a supporting substrate. The adhesive layer is provided on the display panel. The supporting substrate is made up of a member previously provided with curved surfaces. The display panel is bonded onto the curved surface of the supporting substrate by the adhesive layer. The supporting substrate supports the display panel in a curved form along the curved surface.

Abstract: Disclosed is a backlight unit. The backlight unit includes a light source, and a cover bottom internally accommodating the light source. Here, the cover bottom is divided into re-numbered (n>1) sub-cover bottoms, and a coupling unit for mutually fixing and coupling the divided cover bottoms is formed at ends of each of the cover bottoms facing each other.

Abstract: An LED backlight array in which every LED, regardless of whether it is a red, green, cyan, or blue LED, contains a blue emitter. As each LED contains the same type of emitter, the backlight can be driven by a single blue driver circuit, rather than separate red, green, cyan, and blue drivers. That is, the present disclosure removes the need for red, cyan, and green driver circuits, allowing for simpler and cheaper backlights. Additionally, even though the LED backlight can contain LEDs of different colors, each has a blue emitter, and thus possesses similar aging characteristics.

Abstract: A backlight assembly is provided. The backlight assembly includes a mold frame having a tetragonal frame shape and including four side parts and a bottom part extending from bottoms of the side parts, a printed circuit board disposed on the bottom part of the mold frame, at least one light source disposed on the printed circuit board, and a light guide sheet disposed at a side of the light source and accommodated in the mold frame.

Abstract: A backlight module comprises a backplate having a baseplate and side plates, a direct-lit LED array, edge-lit LED arrays and a light guide panel. The light guide panel is located above the baseplate. The direct-lit LED array is disposed between the baseplate and the light guide panel. The edge-lit LED arrays are disposed at two sides of the light guide panel and facing light incident surfaces thereof respectively. Light scattering structures for scattering light rays are disposed on a light exiting surface or on a bottom surface of the light guide panel. With the LED arrays and the light scattering structures, the light guide panel is divided into three backlight regions. Displaying of the backlight module is controlled region by region by the light scattering structures and the LED drive circuit to improve the brightness of the backlight module and reduce the power consumption of the liquid crystal module.

Abstract: The present invention discloses a display backplane and an LCD device. The display backplane comprises multiple supporting brackets and a connecting slot, wherein, the connecting slot comprises a sliding slot and a protruding platform, and the protruding platform is sliding held in the sliding slot, and at least two of the brackets can rotate relatively about a first rotation axis perpendicular to the plane of the display backplane. After rotation, the display backplane formed by the brackets is smaller in volume such that it can reduce the volume occupied by the packing and shipping during transportation process of the display backplane in order to reduce the packing and shipping cost during transportation process of the display backplane.

Abstract: The present invention provides a display device, back plate element for backlight module and manufacturing mold for splicing parts. The back plate element includes at least two splicing parts and the splicing parts are disposed on the same side of optical component of backlight module. Splicing part has splicing unit for connecting another splicing part. Through adjusting the number of splicing parts, the side length of back plate elements can be adjusted to side length of optical component. The back plate element can be disassembled to reduce the transport volume. A plurality of splicing parts can be manufactured with the same manufacturing mold. As such, the present invention can achieve mold sharing and reduce mold cost.

Abstract: The present invention provides a liquid crystal display device, backlight module and back plate component thereof. The backlight module includes optical member, and the back plate element includes first splicing element and second splicing element. First splicing element is disposed with first accommodation trench to accommodate first side of optical member. One end of second splicing element is coupled with one end of first splicing element, and second splicing element is disposed with second accommodation trench to accommodate second side of optical member. Before assembly, first splicing element and second splicing element can rotate around coupled end, and first splicing element can be rotated to inside of second accommodation trench or second splicing element can be rotated to inside of first accommodation trench. The back plate element of the present invention can be folded for transport before assembly to reduce transport cost.

Abstract: A light guiding body of this invention comprises a light incident surface arranged on one end side of a light guide member, a light reflecting surface arranged on another end side of the light guide member opposite to the light incident surface across the light guide member, and a light emitting surface, arranged on a side surface of the light guide member between the light incident surface and the light reflecting surface, through which light input from the light incident surface into the light guide member passes to outside, in which the light guide member is formed as a solid body and at least a part of the light guide member is made from light scattering guide material which contains light scattering particles.

Abstract: A backlight assembly capable of reducing light loss is presented. The backlight assembly includes a plurality of substrate units and a plurality of reflective members on the substrate units arranged to form an adjacent area where two reflective members are closest to each other. The adjacent area is on one of the substrate units. A display device incorporating the backlight assembly is also presented.

Abstract: LCD backlighting systems, and particularly LCD backlighting systems used in connection with night vision systems, may be configured to achieve reduced cost, reduced volume, and other desirable outcomes by use of a dual-mode configuration. In a dual-mode configuration, certain light sources are active in both day mode and night mode operation. Night mode light sources may be IR filtered in order to prevent disruption of operation of night vision equipment.

Abstract: A liquid crystal display device is provided. The liquid crystal display device includes a light-shielding member to prevent light irradiated upward from a light-emitting surface of a plurality of light-emitting diodes from being incident on a lower edge of an incident surface of a light-guide portion. As a result, a bezel surrounding a liquid crystal display panel may be made thinner, and a bright line defect, hot spot, may be prevented.

Abstract: A backlight includes a case having plural apertures in a main face thereof and a light source disposed in the case. A total area of the plural apertures is not less than 8% and not more than 15% of an area of the main face.

Abstract: An apparatus compensates image in a backlight local dimming system for estimating pixels of the image after backlight spreading of a plurality of backlight sources in the backlight local dimming system. The apparatus includes a block dimming value decision unit, a quality/power-saving priority decision unit, a temporal filter, a backlight spread approximation unit, and an image compensation unit. The block dimming value decision unit calculates an average value, a maximum value and a initial value for each image block. The quality/power-saving priority decision unit generates a backlight control signal based on the average value, the initial value, and two thresholds. The temporal filter adaptively generates a backlight pulse width modulation signal based on the backlight control signal. The backlight spread approximation unit generates a backlight spread image based on the backlight pulse width modulation signal. The image compensation unit compensates the image based on the backlight spread image.

Abstract: The present invention provides a backlight module and a display apparatus. The display apparatus comprises the backlight module and a display panel. The backlight module comprises a plurality of lamps; and a ground bar disposed at one side of the lamps, wherein low-voltage sides of the lamps are electrically connected to the ground bar, and the ground bar has a horizontal supporting plane and an alignment plane, and there is a predetermined angle between the horizontal supporting plane and the alignment plane, the horizontal supporting plane is parallel to the lamps, and the low-voltage sides of the lamps are supported on the horizontal supporting plane and abut against the alignment plane. The present invention can improve the assembly accuracy of the backlight module.

Abstract: Parallax in an optical device is reduced by apply one or a combination of several disclosed techniques, including reduced solid angle or increased collimation of light sources, increased diffusion/scattering at an output of the device, and/or reflective structures for collimation and containment of reflected light. The techniques are advantageously applied to a backlight LCD display, and particularly to high dynamic range dual modulation displays.

Abstract: The present invention discloses a liquid crystal display device, a backlight module incorporated, and a backboard structure configuring the backlight module. The backlight module includes a chassis configured with a holder and a fastening unit. The holder includes a bottom board, a tap, and a first sidewall. A receiving slot is jointly defined by the bottom board, the first sidewall and the tab to receive and position an optical module. The fastening unit includes a coverlid and a second sidewall. A positioning slot is jointly defined by the coverlid, the second sidewall and the tab to receive and position a side of a liquid crystal display panel. The chassis can be used to readily replace a conventional frontal frame and a plastic frame so as to reduce the manufacturing cost.

Abstract: A spread illuminating apparatus includes a light source, a flexible printed circuit board, and a light guiding plate. The light guiding plate has a light incident face, and a light output portion planarly outputting light. The light guiding plate has an inclined portion between the light incident face and the light output portion, the inclined portion having an inclined face gradually reducing in thickness from the light incident face toward the light output portion; the flexible printed circuit board is placed on the light guiding plate from the side of the inclined face, and has a mounting portion mounting the light source, and a bent portion bent to the mounting portion and fixed to the inclined face of the inclined portion, and the bent portion includes a thickness reduced portion having a thickness less than the mounting portion.

Abstract: A switch image control system includes at least one first switch having a first image viewable when a backlighting is applied to the at least one first switch. The system also includes at least one second switch having a second image viewable when the backlighting is applied to the at least one second switch. The backlighting is independently applicable to either or both of the at least one first switch and the at least one second switch.

Abstract: The present invention provides a backlight module and a backboard structure incorporated therein. The backboard structure is configured with a first bracket having the buckle, and a second bracket having defined with the retaining slot. With the interengagement between the buckle and the retaining slot, the embossment and the positioning slot, the backboard structure can be readily constructed by the assembling of the first and second brackets. Since no screws are necessary for the assembling of the backboard structure, no laborious work is required as well. This can effectively reduce the manufacturing cost, and is really beneficial to the automation.

Abstract: A backlight assembly includes an optical member, a receiving container and a combining member. The optical member is configured to change optical characteristics of light. The receiving container includes a bottom plate and a sidewall. The bottom plate is disposed under the optical member and is configured to receive the optical member thereon. The sidewall extends from the bottom plate to form a receiving space with the bottom plate. The optical member is received in the receiving space. The combining member includes a first frame, a second frame and a third frame. The first frame partially covers a bottom surface of the optical member. The second frame protrudes upwards from the first frame. The third frame protrudes from an inner surface of the second frame to partially cover an upper surface of the optical member.

Abstract: A backlight driving circuit includes a plurality of display areas, and each display area includes a first LED light cluster and a second LED light cluster which are symmetrical. The first LED light cluster and the second LED light cluster are connected in series to form a plurality of LED lightbars connected in parallel connection at two ends of the power source of the backlight driving circuit. Because the LED light clusters of the same display area are connected in series namely more than two small lightbars are connected in series to form a large LED lightbar, the small lightbars only occupy one pin of the constant current circuit. The LEDs on both sides of the same display area of the 3D display device can be simultaneously turned on or simultaneously turned off, and can be completely connected in series for use.

Abstract: A backlight module is disclosed. The backlight module comprises a first optical film, a second optical film, a backplate frame, and an optical film supporting device adapted to splice and support the first optical film and the second optical film. The optical film supporting device comprises a body, a splicing portion and a fixing portion. The splicing portion is adapted to splice and support the first optical film and the second optical film, and the fixing portion is fixed to the backplate frame. A liquid crystal display (LCD) device comprising the backlight module described above is also disclosed. By providing an optical film supporting device in the backlight module of the present invention, two or more optical films can be spliced by the optical film supporting device to satisfy the demands for a large-sized optical film. This solution is practical, reliable and low in the cost.

Abstract: A backlight device for a liquid crystal module includes a linear light source and a light reflecting member. The light reflecting member reflects light emitted from the linear light source. The light reflecting member includes a center reflecting face, a pair of first peripheral reflecting faces and a pair of second peripheral reflecting faces. The center reflecting face and the first and second peripheral reflecting faces are integrally formed from a sheet-like member as a one-piece, unitary member.

Abstract: A backlight display has improved display characteristics. An image may be displayed on the display where the image includes a liquid crystal material with a light valve. The display receives an image signal and uses the image signal to modify the light for a backlight array and a liquid crystal layer.

Abstract: A liquid crystal display includes a liquid crystal display panel, a backlight and a cover. The backlight includes optical sheets that are configured to be mounted to the cover using a plurality of holes provided on the optical sheet that material to corresponding protrusions provided on the cover. The holes and protrusions are configured to reduce damage or misalignment to the optical sheet that may be caused by heat generated inside the liquid crystal display.

Abstract: A liquid crystal display (LCD) and a backlight module thereof is disclosed. The backlight module comprises a backplate and a light guide plate. The backplate comprises a bottom wall and a sidewall disposed at a periphery of the bottom wall and extending perpendicular to the bottom wall. The light guide plate is supported on the bottom wall. At least one positioning bent-piece is disposed to be bent from the bottom wall, and the positioning bent-piece abuts against a side edge of the light guiding plate to position the light guide plate. In this way, by using the positioning bent-piece disposed on the bottom wall of the backplate to position the light guide plate, the need of disposing an additional positioning structure on the light guide plate is eliminated, so the product yield of light guide plates can be improved.

Abstract: A LED display screen includes a case, a LED display module and a front assembling system. The case has a front opening. The LED display module is received in the case via the front opening, including a supporting base, a LED display unit mounting in front of the supporting base, and a LED shade shading in front of the LED display unit. The front assembling system has a base channel, a display unit channel and a shade channel. The front assembling system includes a still member, a supporting member and a supporting member. The still member mounts behind the supporting base. The supporting member is provided on the case. The supporting member includes a body and a head. The body is inserted through the mounting hole to engage with the supporting member. The head is hidden inside the base channel to combine the LED display unit with the supporting base.

Abstract: The driving circuit for a light emitting diode (LED) backlight includes at least two lightbars arranged in parallel connection. An output end of each of the LED lightbars is coupled with a converter module, and the converter module is configured with a digital potentiometer balancing a voltage difference between the LED lightbars and adjusting a resistance by an electric signal. In the present disclosure, the digital potentiometer adjusting the resistance by the electric signal is arranged in the converter module connected with the LED lightbar in series, and the resistance of the digital potentiometer is dynamically adjusted according to the resistance of different LED lightbars during use. Thus, the total voltage of each LED lightbar and the digital potentiometer connected with the LED lightbar in series is constant.

Abstract: The present invention discloses a backlight module comprising a light source; a back plate with side walls; an optical sheet arranged on the back plate and having a plurality of openings on sides thereof; and a plurality of positioning components, each having a suspending portion and a clamping portion; the suspending portion and the opening of the optical sheet are coupled to each other, and the clamping portion and the side wall of the back plate are coupled to each other. The present invention further discloses a liquid crystal display (LCD).

Abstract: A backlight fixing device includes a base plate, a first slidable unit and a second slidable unit. The base plate includes an L-shaped bar formed on an upper surface of the base plate protruding from edges of two adjacent sides of the base plate. A first guiding groove and a second guiding groove are defined in the upper surface of the base plate and extended perpendicularly from the other two adjacent sides of the base plate towards a central area of the base plate correspondingly. The first slidable unit is movably attached to base plate to be movable along the first guiding groove. The second slidable unit is movably attached to base plate to be movable along the second guiding groove. The first slidable unit, the second slidable unit and the L-shaped bar form a receiving space for accommodating a backlight module.

Abstract: A hollow light-recycling backlight has a “semi-specular” component providing a balance of specularly and diffusely reflected light improving the uniformity of the light output. The component may be arranged on the reflectors (1021), (1014) or inside the cavity (1016). This balance is achieved by designing the component's “transport ratio” defined by (F?B)/(F+B), (F and B are the amounts of incident light scattered forwards and backwards respectively by the component in the plane of the cavity) to lie in a certain range. Furthermore, the product of the front and back reflector “hemispherical” reflectivities should also lie in a given range. Alternatively, the “cavity transport value”, a measure of how well the cavity can spread injected light from the injection point to distant points in the cavity should lie in a further range and the “hemispherical” reflectivity of the back reflector should be >0.7.

Abstract: The present disclosure discloses a middle frame, a backlight module, and a liquid crystal display (LCD) device. The middle frame includes at least two middle frame assemblies joined in sequence. The middle frame further includes a splicer; a joining face of at least one of the middle frame assemblies is configured with a guide groove corresponding to at least two fixing positions, and the two adjacent middle frame assemblies are positioned by the splicer fixed in the guide groove. In the present disclosure, because the guide groove and the splicer are used, the relative position of the two adjacent middle frame assemblies can be adjusted according to LCD devices of different sizes, and the two adjacent middle frame assemblies are positioned by the splicer fixed in the guide grooves. Thus, the middle frame assemblies can be made into standardized universal parts, to be shared by various devices.

Abstract: A light diffusion member includes a light-transmissive base, a plurality of light diffusion portions, a connecting portion, and a light absorbing layer. The light diffusion portions are arranged on one surface of the base and have light-incident end surfaces each positioned on the side away from the base and having a larger area than a light-emergent end surface thereof. The connecting portion connects at least two adjacent ones of the plural light diffusion portions to each other, and is positioned near the light-incident end surfaces of the adjacent light diffusion portions. The light absorbing layer is formed on the one surface of the base in a region different from a region where the light diffusion portions are formed. A size from the light-incident end surface to the light-emergent end surface of the light diffusion portion is larger than a thickness of the light absorbing layer.

Abstract: According to one embodiment, a backlight device includes an optical controller, a light source, a first light guide module, a second light guide module, and a first member. The light source faces the optical controller. The first and second light guide modules are configured to guide light emitted by the light source toward the optical controller. The first member is placed in a traveling path of the light emitted by the light source. The first member is located near a joining portion at which the first light guide module and the second light guide module are joined to each other.

Abstract: An object of the present invention is to realize the suppression of uneven brightness at low cost in a lighting device. A backlight unit 12 according to the present invention includes: LEDs 17 as a light source; a chassis 14 including a bottom plate 14a disposed on a side opposite to a light output side with respect to the LEDs 17 and housing the LEDs 17; and a first reflection sheet 22 reflecting light including a square-shaped bottom portion 24 disposed along the bottom plate 14a, and at least two rising portions 25 and 26 rising from at least two adjacent sides of the bottom portion 24 toward the light output side such that a seam J is formed between adjacent side edges 25a and 26a. An overhang portion 28 is formed on the side edge 25a of the first rising portion 25 of the at least two rising portions 25 and 26. The overhang portion 28 overhangs beyond the seam J in a direction from the bottom portion 24 to the second rising portion 26.

Abstract: A backlight module includes a light source, a light guide plate, and a reflector. The light guide plate includes a top surface, a bottom surface, and a circumferential side surfaces. The single top surface includes both a light incident area and a light emitting area. The light source is positioned above the light incident area to feed light down into the light guide plate and the reflector covers the bottom surface and the side surface to reflect light otherwise escaping through the bottom surface and the side surface.

Abstract: The present invention discloses a display device which is configured with a liquid crystal display panel and a backlight module. The backlight module includes at least an optical film and a mainframe structure which includes a plastic frame and a backboard integrally with the plastic frame. The backboard includes an integral bottom to support the optical films of the backlight module, and a first sidewall. Wherein the plastic frame is integrally formed with a carrying portion.