Shenzhen China Star Optoelectronics Technology Co., Ltd.

Chechang Hu

Hu He

Kuangyao Chang

Jianfa Huang

Jing Zhang

Yong Fan

Wei Fan

Lei Sun

Chao Ning

Kuojun Fang

Qian Cao

Kuang-yao Chang

Li-Yi Chen

Lindong Fang

The present invention provides a light guide plate and a backlight module using the light guide plate. The light guide plate has an upper surface forming upper micro-structures and a lower surface forming lower micro-structures. The upper and lower micro-structures are set parallel to propagation direction of the light that emits from a backlight source traveling within the light guide plate. The upper and lower micro-structures each include a plurality of periodically and successively juxtaposed strip-like units. Each of the strip-like units forms a prism. The strip-like units of the upper and lower micro-structures are juxtaposed in the same direction. With the combination and arrangement of the upper micro-structures and lower micro-structures, collimation of light is improved after the light from an LED light source enters the light guide plate so as to improve convergence of the light inside a section.

Light guide plate and side-edge backlight module using same

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.

Backlight module and corresponding liquid crystal display device

A light guide plate includes upper microstructures forming an upper surface. The upper microstructures are distributed in a successive convex-concave alternating arrangement in a direction perpendicular to propagation direction of light in the light guide plate. The light guide plate is divided according to the distance from the light source in the light propagation direction into a proximal side and a remote side. With H indicating height of shape features of the upper microstructures and P indicating spacing between the shape features of the upper microstructures, the shape features of the upper microstructures show a distribution that is variable in the light propagation direction in such a way that the variation satisfies the condition that aspect ratio H/P of the upper microstructures at the proximal side of the light guide plate is less than aspect ratio H/P of the upper microstructures at the remote side of the light guide plate.

Light guide plate for 3D displaying

The present invention provides a side-edge backlight module, which includes a backplane, a light guide plate arranged inside the backplane, and a backlight source mounted to the backplane. The backlight source includes a circuit board and a plurality of LED lights mounted to the circuit board and electrically connected to the circuit board. The circuit board includes a mounting section and a bent section connected to the mounting section. The LED lights are mounted to the mounting section. The bent section is coupled to the backplane. The light guide plate is supported on the bent section. The side-edge backlight module of the present invention uses a MCPCB having a bent section to replace the conventional heat dissipation arrangement that attaches an MCPCB through thermal paste to an aluminum extrusion in order to improve the performance of heat dissipation and enhance the quality of backlight module.

Side-edge backlight module

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.

Light guide plate and backlight module containing same

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, at least one optical fiber, a fiber arrangement substrate and a light guide plate. The optical fiber is connected between the light collector and the fiber arrangement substrate. The light guide plate is disposed at one side of the fiber arrangement substrate. The present invention can use ambient light rays to form a backlight source.

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.

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, a light guide plate and a light coupling device. 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 coupling device is disposed between the fiber light-outputting substrate and the light guide plate, wherein light diffusion recessions of the light coupling device face the light-outputting openings of the fiber light-outputting substrate. The present invention can use ambient light rays to form a backlight source.

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.

Light guide plate and backlight module

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.

Backlight module for liquid crystal display and liquid crystal display

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.

Selecting method of light guide plate of backlight module

The present invention provides a method for mounting light bar that enhances central point brightness of backlight module, which includes () providing a PCB and LED lamps of different luminous intensities among which the difference is less than 20%; () positioning the LED lamps on the PCB in a spaced manner and electrically connected to the PCB; () providing a backlight module main body; () positioning the PCB with the LED lamps on the backlight module main body to form a the backlight module; () measuring central point brightness and illumination homogeneity; () adjusting the spacing distance between the LED lamps according to predetermined central point brightness and illumination homogeneity so as to have the central point brightness and illumination homogeneity of the LED lamps satisfying requirements; and () mounting the LED lamps to the PCB so as to form an LED light bar.

Method for manufacturing light bar that enhances central point brightness of 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.

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Shenzhen, China

Chechang Hu