Patent application number | Description | Published |
20120275187 | LIGHT GUIDE PANEL AND BACK LIGHT MODULE THEREOF - The invention relates to an LGP and a back light module thereof, wherein the LGP comprises a light input surface, a bottom surface and a light output surface opposite to the bottom surface, and is characterized in that the bottom surface and/or the light output surface is provided with a plurality of microstructures, distribution rules for microstructures along the direction parallel to the light input surface of the LGP are: the microstructures in the middle of the LGP are closely arranged, and the microstructures on the two sides are sparsely arranged. In the LGP provided in the invention, the light output in the direction parallel to the light input surface can reach the brightness distribution with high middle and low edges, thereby achieving higher efficiency of light energy utilization. | 11-01-2012 |
20130094185 | LED lens, Back Light Module and Liquid Crystal Display Device - The present invention discloses a light emitting diode (LED) lens, a back light module and a liquid crystal display (LCD) device. A LED lens is of a direct type back light module; the dispersion index of said LED lens is less than 0.1; said dispersion index is: | 04-18-2013 |
20130100382 | LIGHT GUIDE PLATE, BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY DEVICE - A light guide plate is an optical transmissive plate and comprises at least one light incident surface for receiving light rays, one light exiting surface intersecting with the light incident surface, and one bottom surface opposite to the light exiting surface and formed with a plurality of grooves. The grooves are arranged perpendicularly to the light incident surface for adjusting a distance between a first grooves near the light incident surface and the light incident surface. Since a distance between the first microstructure near the light incident surface and the light incident surface is adjusted without modifying the light coupling distance, the hot-spot phenomenon can be reduced without increasing the cost of the light guide plate. Other grooves are arranged at increasing density and are slightly different for improving uniformity of the light rays outputted and luminance of the backlight module comprising the light guide plate. | 04-25-2013 |
20130107577 | Backlight Module and Manufacturing Method thereof, and Liquid Crystal Display Device | 05-02-2013 |
20130140062 | CIRCUIT BOARD STRUCTURE AND METHOD FOR MANUFACTURING THE SAME - A manufacturing method of a circuit board structure includes steps of: providing a circuit board which comprising a metal substrate, a metal layer and a dielectric layer disposed between the metal substrate and the metal layer; forming grooves on the circuit board to expose the metal substrate, the dielectric layer and the metal layer; performing a procedure for connecting metal in the grooves so that the metal substrate and the metal layer being in contact with each other. A structure of circuit board comprises a metal substrate, a dielectric layer and a metal layer. The dielectric layer is formed on the metal substrate, and the metal layer is formed on the dielectric layer; wherein the metal substrate and the metal layer can be in contact with each other at an appropriate position by performing a metal connecting procedure. | 06-06-2013 |
20130148054 | LIGHT GUIDE PLATE AS WELL AS BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME - A light guide plate as well as a backlight module and a liquid crystal display device which include the light guide plate. The light guide plate comprises a light entrance surface, a light emitting surface connected with the light entrance surface, and a bottom surface disposed oppositely to the light emitting surface. A plurality of V-shaped groove microstructures is disposed on the light entrance surface, a range of a top angle of the V-shaped groove microstructure is from 100 to 130 degrees. Provided technology is easy to be embodied in the industry and a backlight effect with increased uniformity of emitting light is achieved. | 06-13-2013 |
20130265523 | Backlight Module and Liquid Crystal Display - A liquid crystal display (LCD) and a backlight module thereof are proposed. The backlight module includes a light guide plate (LGP), a first prism sheet, and a second prism sheet. The first prism sheet is disposed on the LGP. The second prism sheet is disposed on the first prism sheet. The first and second prism sheets both include a plurality of prisms. The plurality of prisms of the first prism sheet are perpendicular to a longer side of the LGP. The plurality of prisms of the second prism sheet form an angle with the longer side of the LGP, and the angle measures between 15 and 45 degrees. Since the backlight module and the plurality of prisms of the second prism sheet both form the angle between 15 and 45 degrees with the longer side of the LGP, brightness at a frontal viewing angle is enhanced and a viewing angle becomes wider. | 10-10-2013 |
20130271694 | Direct-light Type Backlight Module and Liquid Crystal Display - A direct-light type backlight module and a liquid crystal display (LCD) are proposed. The direct-light type backlight module includes a base frame, a light source, a diffuser plate, and a plurality of support pins. The light source is disposed on the base frame. The diffuser plate is disposed on the light source. The plurality of support pins are disposed on the base frame and support the diffuser plate. At least one of the plurality of support pins is made of first transparent materials, or is made of is made of top and bottom connected second transparent materials and opaque materials. Through the abovementioned method, support pin shadow mura could be successfully prevented, and a backlight effect and a display effect could be effectively enhanced when light emitted by the light source shines on the at least one of the plurality of support pins. | 10-17-2013 |
20130294052 | Backlight Module for Liquid Crystal Display and Liquid Crystal Display - The utility model discloses a backlight module for a liquid crystal display device and a liquid crystal display device. The backlight module comprises an LED and a backplane, wherein the backlight module also comprises a heatsink plate arranged on the outer of the backplane; and the LED is linked with the heatsink plate in the mode of heat conduction. The utility model, by arranging the LED on an extra heatsink plate which is arranged on the outer of the backplane, dissipates outward the heat emitted by the LED through the heatsink plate, lowers the temperature of the backlight cavity, and protects the optical components. At the same time, because the backplane is not directly used to dissipate heat, the gradient of temperature distribution on the backplane is reduced, thus, the gradient of temperature distribution in the backlight cavity is reduced and stress of the backlight cavity induced by the temperature gradient is also reduced. | 11-07-2013 |
20130335675 | DIRECT-TYPE BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY USING THE SAME - A direct-type backlight unit is provided for improving a dark area problem on the diffusion plate. The direct-type backlight unit includes an optical sheet; a diffusion plate for supporting the optical sheet; a bottom plate, disposed below the diffusion plate; a plurality of light emitting devices (LEDs), disposed between the diffusion plate and the bottom plate; a plurality of supporting elements, disposed between the diffusion plate and the bottom plate and fixed on the bottom plate, each supporting element including: a top portion having a light transmissive section through which light emitted by the LEDs pass; and a bottom portion, fixed on the bottom plate. | 12-19-2013 |
20130343040 | DIRECT TYPE BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - A direct type backlight unit includes an optical film, a diffusion plate for supporting the optical film, a bottom plate disposed under the diffusion plate, a plurality of light emitted diodes disposed between the diffusion plate and the bottom plate, and a plurality of support structures disposed between the diffusion plate and the bottom plate and fixed on the bottom plate, wherein each support structure is disposed between two adjacent light emitting diodes, a height of each support structure is smaller than a distance between the bottom plate and the diffusion plate. The direct type backlight unit can improve the problem that a dark area occurs on the diffusion plate. | 12-26-2013 |
20140056029 | BACKLIGHT MODULE - A backlight module comprises: a light emitting device; a light guide plate that has a plurality of light guide prisms; a first prism assembly that comprises a first base body and a plurality of first prisms arranged on the light emergent surface of the first base body; a second prism assembly that comprises a second base body and a plurality of second prisms, wherein the extending direction of the second prisms is vertical to that of the first prisms. By way of the light guide prisms of the light guide plate extending in the parallel direction to the extending direction of the first prisms, the light beam with a large angle propagating through the light guide plate will not be guided out by the prisms near the light incident side, so as to increase the light mixing area and subsequently avoid the presence of alternately dark and bright hotspot. | 02-27-2014 |