Backlight source device and liquid crystal display

A backlight and light source technology, applied in the direction of instruments, optics, nonlinear optics, etc., can solve the problems of large incident dark area, small incident dark area, low uniformity of light output, etc., to increase brightness and uniformity , Improve the effect of beam utilization

Inactive Publication Date: 2005-01-26
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the defects of low light uniformity and large incident dark area of ​​the prior art backlight device, t

Method used

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  • Backlight source device and liquid crystal display
  • Backlight source device and liquid crystal display
  • Backlight source device and liquid crystal display

Examples

Experimental program
Comparison scheme
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no. 1 approach

[0022] see Figure 4 , is the first embodiment of the backlight device of the present invention, the backlight device 100 includes a plurality of point light sources 110 and a light guide plate 120 . The point light source 110 emits light beams, and the light guide plate 120 guides the transmission direction of the light beams emitted by the point light source 110 and converts them into planar light sources for emission.

[0023] The point light source 110 can be a light emitting diode or a light bulb, and a plurality of light emitting diodes or light bulbs of different colors can be configured to adjust the required color and brightness of the light source.

[0024] Please refer to FIG. 5 together. The light guide plate 120 is a flat light guide plate made of transparent materials such as acrylic, glass or polycarbonate, and includes an incident surface 121, a light exit surface 122 connected to the incident surface 121, and a The bottom surface 123 opposite to the light emi...

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PUM

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Abstract

A LCD display comprises a LCD plate and a negative light source apparatus with a light conductive plate which comprises a incidence surface with multiple triangle slots and a light-out surface connected with incidence surface; and multiple point-source which is located relatively to the incidence surface. The light beam from the light source goes into light conductive plate through enlarging and diversification angle of triangle slots to decrease dark band. And there located light-out surface apparatus near LCD plate.

Description

【Technical field】 [0001] The invention relates to a backlight source device and a liquid crystal display, in particular to a backlight source device comprising a point light source and a light guide plate and a liquid crystal display using the back light source device. 【Background technique】 [0002] Due to the advantages of lightness, thinness, and low power consumption, liquid crystal displays are widely used in modern information equipment such as notebook computers, mobile phones, and personal digital assistants. Because the liquid crystal itself in the liquid crystal display does not have light-emitting properties, it is necessary to provide a backlight device for it to realize the display function. [0003] The prior art backlight device includes a light source and a light guide plate. The light source is arranged relative to the light incident surface of the light guide plate. The light guide plate guides the transmission direction of the light beam emitted from the l...

Claims

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Application Information

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IPC IPC(8): G02B5/02G02F1/13357
Inventor 蔡坤荣
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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