Patent application number | Description | Published |
20120057102 | BACKLIGHT MODULE - The present invention discloses a backlight module, used for a liquid crystal display apparatus. The backlight module comprises a back plate, positioned at the bottom of the backlight module; a display area being in the liquid crystal display apparatus in accordance with the back plate and overlapping therewith, and the display area has a display area center line; and a plurality of LEDs classified to belong to several bright bins respectively and the display area center line has a center corresponding to the LEDs, wherein the LEDs belonging to a higher bright bin are positioned closer to the center and the LEDs belonging to a lower bright bin are positioned farther to the center. The LED backlight module of the present invention can raise the usage rate of LEDs and reduce the cost efficiently. | 03-08-2012 |
20120256213 | LED STRUCTURE AND MANUFACTURING METHOD THEREOF - The present invention discloses an LED structure and a manufacturing method thereof. The LED structure has a housing, an LED chip and a transparent encapsulant. The housing has a recess and at least one protruded wall. The LED chip is received in the recess. The transparent encapsulant is formed by dispensing a molding compound into the recess by an adhesive dispenser. The transparent encapsulant has an edge matched with an edge of the recess to encapsulate the LED chip in the recess, and has a height smaller than that of the protruded wall. The LED chip of the LED structure of the present invention can emit light through the spherical surface of the transparent encapsulant based on a greater visual angle, and thus enhance the light extraction efficiency. | 10-11-2012 |
20120320628 | SIDE-LIGHT TYPE LIGHT GUIDE PLATE ASSEMBLY AND BACKLIGHT MODULE - The present invention discloses a side-light type light guide plate assembly and a backlight module, which has a light guide plate and at least one reflector sheet. The light guide plate has a lower surface, a light output surface opposite to the lower surface, and at least one light input side surface connected between the lower surface and the light output surface. The reflector sheet is correspondingly disposed on at least one side surface of the light guide plate except for the light input side surface, while a medium layer is defined between the reflector sheet and the light guide plate. The refraction index of the medium layer is smaller than or equal to 1.12. By providing the air layer and the reflector sheet, light beam emitting out of a side of the light guide plate and going back to the light guide plate can meet conditions of total reflection, so as to prevent from generating a light leakage phenomenon at edges of the light guide plate. | 12-20-2012 |
20130021824 | LIGHT GUIDE PLATE AND BACKLIGHT MODULE - The present invention provides a light guide plate and a backlight module. The backlight module comprises the light guide plate. The light guide plate comprises a plurality of elongated microstructures disposed on the light guide plate and parallel to a light-incident surface thereof. At least one curve parameter of profiles of the elongated microstructures is altered according to a position variation in an extending direction of the elongated microstructures, so as to adjust a brightness distribution in the extending direction of the elongated microstructures. The invention can improve a luminous efficiency of the light guide plate. | 01-24-2013 |
20130100381 | BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY DEVICE - The present invention provides a backlight module, which comprises a light guide plate and a light source. The light guide plate comprises a light input side, a light output surface which adjoins to the light input side, and a bottom surface corresponding to the light output surface. The light source comprising a light-emitting surface is disposed at one side of the light input side of the light guide plate, and the light-emitting surface of the light source is corresponding to the light input side of the light guide plate. The backlight module further comprises a specular reflector which is disposed between the light-emitting surface of the light source and the light input side of the light guide plate. Light beams which are emitted from the light-emitting surface of the light source toward the outside of the light guide plate will enter the light guide plate after being specularly reflected by the specular reflector. The present invention further provides a liquid crystal display device. | 04-25-2013 |
20130128189 | Backlight Module and Liquid Crystal Display Device - The present invention discloses a backlight module and an LCD device, wherein the backlight module comprises a light bar, a light guide plate coupled to a luminous surface of the light bar, and a coupling light element arranged between the light bar and the light guide plate; and the coupled light element forms a coupled light channel faced to a light incident surface of the light guide plate around the luminous surface of the light bar. The present invention, by arranging the coupling light element between the luminous surface of the light bar and the light guide plate of the backlight module to be used for leading the light emitted by the light bar to the light guide plate, make the coupling light element formed the coupling light channel faced to the light incident surface of the light guide plate around the luminous surface of the light bar. Besides, the coupling light channel leads the light emitted by the light bar to the light incident surface of the light guide plate, and especially to reflect the wide-angle rays emitted by the light bar to the light incident surface of the light guide plate, and then to make the light emitted by the light bar entered into the light guide plate as much as possible. In this arrangement, the utilization rate of rays of the light emitting lamps is enhanced, the efficiency of the backlight module is enhanced and the display effect of an LCD device is improved. | 05-23-2013 |
20130158956 | SELECTING METHOD OF LIGHT GUIDE PLATE OF BACKLIGHT MODULE - A selecting method of light guide plate of backlight module is described. The selecting method includes the steps of: calculating a plurality of mura indexes (MI) corresponding to a plurality of mura statuses of a plurality of first light guide plate (LGP) types, respectively; defining a plurality of film structures, wherein each of the film structures corresponds to each of mura indexes for mapping the mura indexes (MI) of the first LGP types with the film structures to construct a mapping database; and selecting one of the film structures and one of the mura indexes (MI) correspondingly from the mapping database for determining a critical dot dimension (CDD) of a second LGP type of the selected film structure. The selecting method avoids the mura, speed up the research and development procedure of the backlight module, labor cost and manufacturing cost when the LGP is assembled with the film structure. | 06-20-2013 |
20130208214 | BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY DEVICE - The present invention relates to a backlight module and a liquid crystal display (LCD) device, and the backlight module comprises a light guide plate, a base, a light source and a specular reflection plate. An included angle is provided between a light output surface of the light source and a light input surface of the light guide plate, and the included angle is smaller than 90 degree. The backlight module and the LCD device according to the present invention can increase the light coupling efficiency of the backlight module by changing the shape of the light output surface of the light source, so as to solve the technology problem that the light coupling efficiency of the traditional backlight module and the LCD device is relatively low. | 08-15-2013 |
20130286680 | Light Guide Plate and Backlight Module Containing Same - The present invention provides a light guide plate and a backlight module containing the light guide plate. The light guide plate includes a plate body and a metal layer formed on the plate body. The plate body includes a bottom face, a top face opposite to the bottom face, and a plurality of side faces between the bottom face and the top face. The metal layer is formed on at least one side edge of the top face. The metal layer shows reflectivity of which difference is less than 20% for lights having wavelength between 380-780 nm. The light guide plate uses the metal layer formed on the top face to reflect light back into the light guide plate to confine the light within the light guide plate so as to prevent light leakage and ensure light intensity and homogeneity of the light guide plate. | 10-31-2013 |
20130286681 | Light Guide Plate and Backlight Module Containing Same - The present invention provides a light guide plate and a backlight module containing the light guide plate. The light guide plate includes a plate body and a coating layer formed on the plate body. The plate body includes a bottom face, a top face opposite to the bottom face, and a plurality of side faces between the bottom face and the top face. The coating layer is formed on at least one side edge of the top face. The coating layer has a refractive index that is greater than or equal to 1 and less than refractive index of the plate body. The light guide plate uses the coating layer formed on the top face to reflect light back into the light guide plate to confine the light within the light guide plate so as to prevent light leakage and ensure light intensity and homogeneity of the light guide plate. | 10-31-2013 |
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 |
20140036535 | BACKLIGHT MODULE AND AN LED LIGHT BAR THEREOF - A backlight module and a light emitting diode (LED) light bar thereof are proposed. The backlight module includes a plurality of LEDs, at least one circuit board, a heat sink, a plurality of screws, and a light guide plate (LGP). The plurality of LEDs are arranged on the at least one circuit board. A plurality of screws are arranged on the at least one circuit board and the arrangement method thereof depends on temperature distribution of the at least one circuit board. The plurality of screws are inserted between the plurality of LEDs and are arranged at an unequally distance so that temperature can be evenly distributed over the LED light bar, thereby improving image quality of display devices. | 02-06-2014 |
20140125920 | BACKLIGHT MODULE AND DISPLAY APPARATUS - 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 light collector, optical fibers, a fiber light-outputting substrate and a light guide plate. The optical fibers are connected between the light collector and the fiber light-outputting substrate. The light guide plate is disposed at one side of the fiber light-outputting substrate. The light guide plate includes light diffusion recessions, and the light diffusion recessions face the light-outputting openings of the fiber light-outputting substrate. The present invention can use ambient light rays to form a backlight source. | 05-08-2014 |
20150022756 | BACKLIGHT MODULE AND CORRESPONDING LIQUID CRYSTAL DISPLAY DEVICE - The present invention relates to a backlight module and a corresponding liquid crystal display panel. The backlight module includes a backboard having multiple concave portions formed on an inner surface of the backboard and multiple light sources mounted in the concave portions. The backlight module and the corresponding liquid crystal display device of the present invention can reduce the thickness of direct-type backlight module without affecting the optical quality of the lights emitted from the backlight module and increasing the manufacturing cost of the backlight module. | 01-22-2015 |