39results about How to "Uniform backlight" patented technology

A display panel for a flat panel display includes a planar array of LCD devices and a planar array of LED devices that is closely spaced apart from the planar array of LCD devices, at least some of the LED devices being disposed within a periphery of the array of LCD devices such that, in operation, the planar array of LED devices provides backlighting for the planar array of LCD devices. The planar array of LED devices can include at least one solid metal block having first and second opposing metal faces. The first metal face includes therein an array of reflector cavities, and the second metal face includes therein heat sink fins that are exposed at the back face of the flat panel display.

A display panel for a flat panel display includes a planar array of LCD devices and a planar array of LED devices that is closely spaced apart from the planar array of LCD devices, at least some of the LED devices being disposed within a periphery of the array of LCD devices such that, in operation, the planar array of LED devices provides backlighting for the planar array of LCD devices. The planar array of LED devices can include at least one solid metal block having first and second opposing metal faces. The first metal face includes therein an array of reflector cavities, and the second metal face includes therein heat sink fins that are exposed at the back face of the flat panel display.

An LED edge-lit sign comprises a transparent light panel, an image-carrying sheet in front of the light panel and a reflective back plate behind the light panel. The image to be displayed is printed onto the image-carrying sheet and a translucent layer of white ink is uniformly applied over the printed image. The result is uniform and effective back lighting of the image. A transparent window may be provided to view a changeable display therethrough.

The invention provides a mobile phone and a method for manufacturing a backlight module of the shell thereof. The mobile phone comprises the shell with a pattern, a subsidiary display screen and the backlight module used for displaying the pattern of the shell, wherein the backlight module is positioned between the shell and the subsidiary display screen, and comprises a light guide plate, an optical film and LEDs, wherein the light guide plate is positioned below the shell; the optical film is adhered to the lower part the light guide plate and positioned above the subsidiary display screen; and the LEDs are arranged on the lateral surfaces of the light guide plate. The mobile phone adopts a small number of LEDs to provide various colors for the pattern of the shell, adopts the light guide plate to realize integrally uniform backlight of the pattern on the shell, and adopts the optical film to have good aesthetic effect and achieve the effect that the printed pattern and a pattern displayed on the subsidiary display screen do not intervene each other, thereby achieving gorgeous visual effect and meeting the requirements of more consumers.

The invention discloses a LED (light-emitting diode) driving circuit which comprises a light emitting module and an AC (alternate current) first input end and an AC second input end which are respectively arranged at both ends of the light emitting module, wherein the light emitting module comprises a first LED group and a second LED group which are connected in parallel; and both the first LED group and the second LED group comprise a plurality of LEDs which are correspondingly connected in series and have ethe same conduction directions. According to the invention, AC square signals with equal sizes and opposite phases are input into the light emitting module by the AC first input end and the AC second input end, so that the LEDs of a LED lamp bar are alternately lightened, the LED backlight is uniform, the LED brightness is strengthened, the display effect is better, the driving voltage is also reduced, the electric energy is saved and the use safety is ensured. Moreover, the LED driving circuit has the advantages of simple and reasonable circuit structure and easiness for implementing. The invention also further discloses a LED driving method and the LED lamp bar.

The invention provides a backlight module, an area light source module and a light guide grid structure. The area light source module comprises the light guide grid structure and multiple light sources, wherein the light guide grid structure is provided with multiple light distribution parts, multiple light guide pipes and multiple virtual light source light emergent parts; each light guide pipe is communicated with the light distribution parts and the virtual light source light emergent parts. Each light source is provided with a light ray and corresponds to the light distribution part, wherein the light ray contacts with the light distribution part, part of the light ray penetrates through the light distribution part and is emergent, and part of the light ray is reflected by the light distribution part, passes through the multiple light guide pipes and is emergent through the multiple virtual light source light emergent parts.

The invention relates to a light conduction device and a backlight device. The light conduction device comprises a light uniformity component, plural optical fibers and a light distribution component, wherein the light distribution component is arranged between the plural optical fibers and the light uniformity component and comprises plural micro-lenses; and the multiple micro-lenses respectively correspond to the multiple optical fibers so as to lead light rays emitted from the light uniformity component into the corresponding optical fibers. The backlight device comprises the light uniformity component, a light guide plate and the plural optical fibers, wherein the light incidence ends of the optical fibers are bundled and ranked into a circular light receiving region to receive the light rays emitted from the light uniformity component; and the light emergent ends of the plural optical fibers are in staggered arrangement according to the ranking position of the corresponding light incidence ends and are used for uniformly leading the light rays into the light guide plate. Thus, according to the light conduction device and the backlight device, the light rays can be evenly conducted, and the uniformity of backlight is improved.

The invention provides a display device and a backlight module, the display device comprises the backlight module and a display panel located on the light emitting side of the backlight module. The backlight module comprises a back plate, a reflection plate located on the surface of the back plate, a diffusion plate located on the side, away from the back plate, of the reflection plate, and a partial reflection and partial transmission layer located on the surface of the side, facing the reflection plate, of the diffusion plate; a support fixed on the reflecting plate, and a light bar installed on the support. The reflecting plate and the diffusion plate form a hollow cavity; the bracket is used for supporting the light bar, so that set distances exist between the light bar and the reflecting plate and between the light bar and part of reflecting part transmitting layer; and the reflecting plate and part of reflecting part transmitting layer are used for reflecting part of emergent light of the light bar outwards from one side of the diffusion plate after limited times of reflection in the cavity. According to the structure, light rays are reflected for multiple times in the cavity, the light rays emitted by the light bar can be fully mixed, the reflected light uniformly enters the diffusion plate from the partially-reflecting and partially-transmitting layer, and finally uniform backlight is provided for the display device.

The invention provides a backlight module, an area light source module and a light guide grid structure. The area light source module comprises the light guide grid structure and multiple light sources, wherein the light guide grid structure is provided with multiple light distribution parts, multiple light guide pipes and multiple virtual light source light emergent parts; each light guide pipe is communicated with the light distribution parts and the virtual light source light emergent parts. Each light source is provided with a light ray and corresponds to the light distribution part, wherein the light ray contacts with the light distribution part, part of the light ray penetrates through the light distribution part and is emergent, and part of the light ray is reflected by the light distribution part, passes through the multiple light guide pipes and is emergent through the multiple virtual light source light emergent parts.

The invention provides a backlight module of a liquid crystal display device, comprising a lamp box, a plurality of light sources, a reflector plate structure and a diffusing panel, wherein, the reflector plate structure is arranged between the bottom of the lamp box and the plurality of light sources; the reflector plate structure comprises a plurality of protruding structures, a plurality of plane plate structures and a reflectivity adjusting pattern; various reflectivity adjusting patterns are applied on the surfaces of the protruding structures and the plane plate structures with the samenumber of the reflectivity adjusting patterns by the printing or processing applying ways; wherein, after the surface of the reflector plate structure is improved, the appropriate reflectivity can beadjusted, the bright rays and mura are improved and the display effect of the LCD is effectively improved.

The invention discloses a light guide module which comprises a light guide board and a reflecting structure. The light guide board receives light front the lateral side to allow the light to be transmitted in the light guide board. The light guide board comprises a light emitting face and a bottom which are located on two different end faces of the light guide board. The reflecting structure is used for destroying total reflection of the light guide board to allow the light to be guided out of the light guide board. The reflecting structure comprises a first reflecting layer formed at the bottom of the light guide board and a second reflecting layer formed above the first reflecting layer. By the light guide module which can be used as a sensing component of a light sensing device, even backlight is provided, light spot interference caused by a reflecting light signal penetrating a plurality of light reflecting structures, and high sensing accuracy can be achieved.

The invention discloses a touch panel assembly and a portable electronic device. The touch panel assembly comprises a touch panel, a flexible circuit board, input elements and light-emitting elements. The touch panel comprises multiple sensing tandems and multiple connecting gaskets. The connecting gaskets are arranged in multiple bonding areas of the touch panel and electrically connected with the corresponding sensing tandems. The flexible circuit board comprises multiple lapping parts and light guide parts. The lapping parts extend and are connected with the bonding areas. Each lapping part comprises multiple terminals which are electrically connected with the corresponding connecting gaskets. Each light guide part comprises a connecting end and an extension end. The connecting end is connected with the corresponding lapping part. The extension end is connected with the connecting end and extends to the direction away from the touch panel. The input elements are arranged exactly above the extension ends. The light-emitting elements are arranged at the light incident side of the light guide parts.

The invention discloses a backlight module and a display device, belonging to the technical field of display, comprising: a light source and a multi-layer stacked optical film, the light source is a side-entry light source; a hollowed out part along the thickness direction of the backlight module Through the multi-layer optical film; the hollow part includes a light guide part, the light guide part includes a light-transmitting main part, a first reflective layer and a second reflective layer, the cross section of the main part is ring-shaped; the light guide part is close to the light source The side is the first side, and the side of the light guide part away from the light source is the second side; the inner wall of the main body part on the second side is provided with a first reflective layer; the outer wall of the main part on the second side is provided with a second reflective layer , the second reflective layer includes a plurality of light-transmitting regions; after the light from the light source enters the light-guiding portion, it is reflected between the first reflective layer and the second reflective layer, and at least part of the reflected light is emitted from the light-transmitting regions. Compared with the prior art, the backlight module can provide uniform backlight, thereby improving the display quality.

The invention discloses an LED price bar lamp, which comprises: a two-color extruded plastic tube, an end cover, and a light source assembly, and the end cover is fastened on both sides of the two-color extruded plastic tube; At the bottom of the tube, the reflective surface is located on one side of the two-color extruded plastic tube, and the light-transmitting surface of the price tag lighting is located on the other side of the two-color extruded plastic tube. The surface forms a closed structure, and an installation groove a and an installation groove b are provided on the lower part of the outer wall of the reflective surface. A structural groove is formed on the inner wall of the reflective surface and between the installation groove a and the installation groove b. The light source assembly One end of the light source assembly is located in the structural groove, and the other end of the light source assembly is located in another structural groove formed between the bottom of the light-transmitting surface of the price tag lighting and the light-transmitting surface of the shelf lighting; Clamp the price tag together. The strip light of the present application has the advantages of convenient installation, simple structure, dustproof and waterproof, and low cost.

The invention discloses a liquid crystal module and display equipment. The liquid crystal module comprises a module backboard, a supporting member, a diffusion board and a luminous component, and thediffusion board is opposite to the module backboard; the supporting member abuts against the portion between the module backboard and the diffusion board and comprises a supporting part and a bottom plate connected with one end of the supporting part, the end, deviating from the bottom plate, of the supporting part abuts against the diffusion board, the outer side face of the bottom plate is connected with the module backboard, and the inner side face of the bottom plate is a reflecting surface; the luminous component emits light relative to the inner side face of the bottom plate. The liquidcrystal module integrates the supporting member and the luminous component, so that the liquid crystal module is uniform in backlight.

A backlight module includes a light-guiding plate, a plurality of reflection spots, and a light source. The reflection spots are disposed on a back surface of the light-guiding plate. Light emitted by the light source enters the light-guiding plate through a light input side surface of the light-guiding plate, and is reflected by the reflection spots to emit out of the light-guiding plate through a light output surface of the light-guiding plate. The back surface includes a central portion and a fringe portion. The fringe portion extends along an edge of the back surface. The distribution density of the reflection spots on the fringe portion gradually decreases in a direction from the central portion toward the fringe portion.