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Back light module and light guiding plate set

A technology of backlight module and light guide plate, which is applied in the direction of light guide, optics, optical components, etc., and can solve the problems of lack of products and inconvenience

Inactive Publication Date: 2007-12-26
GIGNO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] It can be seen that the above-mentioned existing backlight module and light guide plate group obviously still have inconvenience and defects in structure and use, and need to be further improved urgently.
In order to solve the problems existing in the backlight module and the light guide plate group, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and there is no suitable structure for general products to solve the problem. The above-mentioned problems are obviously the problems that relevant industry players are eager to solve

Method used

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  • Back light module and light guiding plate set
  • Back light module and light guiding plate set
  • Back light module and light guiding plate set

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0078] As shown in FIG. 2, the backlight module 2 includes a first light source 21, a first light guide plate 22 and a second light guide plate 23. Among them, the first light guide plate 22 and the second light guide plate 23 can be collectively referred to as a light guiding plate assembly.

[0079] The first light source 21 is adjacent to the first light guide plate 22. The first light source 21 can be a light-emitting diode, a laser diode or a plurality of light-emitting diodes. If it is a plurality of light-emitting diodes, they can have different colors. In addition, the first light source 21 may be disposed on a printed circuit board S, and the backlight module 2 may further include a back plate 24. The first light source 21 is disposed on the back plate 24 by the printed circuit board S.

[0080] In this embodiment, the first light guide plate 22 includes a first inclined surface 221, a second inclined surface 222, and a first light guide plate body B. The first inclined s...

no. 2 example

[0087] In this embodiment, the difference from the first embodiment is that the first light guide plate 22 in the first embodiment is a parallelogram plate, and in this embodiment, referring to FIG. 6, the original first light guide plate The sharp angle between the first inclined surface 221 of 22 and the first light guide plate 22 is cut or polished to form a larger angle, for example, ninety degrees (indicated by the circular dashed line). However, the first light guide plate body B still forms a first angle θ1 and a second angle θ2 with the first inclined surface 221 and the second inclined surface 222, respectively, and the sum of the second angle θ2 and the first angle θ1 is 180 degrees.

no. 3 example

[0089] Please refer to FIGS. 2 and 7 at the same time, the backlight module 3 further includes a second light source 27, and the first light guide plate 22 further includes a third inclined surface 223. The second light source 27 may have a different color from the first light source 21 for light mixing or the second light source 27 may have a plurality of light emitting diodes of different colors for light mixing. The third inclined surface 223 is adjacent to the first inclined surface 221 at one end of the first light guide plate body B. In this way, a second light beam L2 emitted by the second light source 27 enters the first light guide plate body B, is reflected by the third inclined surface 223 and the second inclined surface 222, and exits the first light guide plate 22.

[0090] In addition, the backlight module 3 further includes a plurality of focusing lenses F, which are located on the light path of the light beams emitted by each light source entering the first light g...

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Abstract

A back light module is prepared for setting the first light source near to the first light guide plate, arranging the first and the second slope surfaces on the first light guide plate, setting the first slope surface to be opposite to the second one, setting the second light guide plate at one side of the first one, arranging a concave unit on the second light guide plate and facing said concave unit to the first light guide plate. The light guide plate-set applied in said back light module is also disclosed.

Description

Technical field [0001] The invention relates to a backlight module and its light guide plate group, in particular to a backlight module comprising two light guide plates and its light guide plate group. Background technique [0002] A light-emitting diode is a light-emitting element made of semiconductor materials. The element has two electrode terminals. A voltage is applied between the terminals and a very small voltage is applied. Through the combination of electrons and holes, the remaining energy can be excited in the form of light Released. [0003] Different from ordinary incandescent bulbs, light-emitting diodes are luminescent, which has the advantages of low power consumption, long component life, no warm-up time, and fast response speed. Coupled with its small size, vibration resistance, suitable for mass production, it is easy to make extremely small or array elements according to application requirements. At present, light-emitting diodes have been widely used in ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357G02B6/00G02F1/1335
Inventor 林峰立
Owner GIGNO TECH CO LTD
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