CN201100869Y

CN201100869Y - Light-guiding plate

Info

Publication number: CN201100869Y
Application number: CNU2007203057990U
Authority: CN
Inventors: 温明晃; 陈俊宪; 林时正; 吕秋玲
Original assignee: Taiwan Nano Electro Optical Technology Co Ltd
Current assignee: Fuxiang Industrial Co., Ltd.
Priority date: 2007-11-15
Filing date: 2007-11-15
Publication date: 2008-08-13
Anticipated expiration: 2017-11-15

Abstract

The utility model relates to a light guide plate, which at least comprises a light inlet face, a bottom surface which is intersected with the light inlet face and a light extraction face which is opposite to the bottom surface, and the light source is arranged on one side which is opposite to the light inlet face, wherein, one face of the bottom surface or the light extraction face of the light guide plate is provided with grid points with complex numbers, and the other face is provided with grooves with complex numbers, when light source is irradiated out from the light guide plate, light extraction angles can be changed, and brilliance can be effectively improved.

Description

Light guide plate

Technical field

The utility model aims to provide a kind of rising angle that can change light source, and can effectively improve the light conducting plate structure of its briliancy at the improvement of the light conducting plate structure in the middle of the backlight module.

Background technology

Press, generally be applied in the LCD of massaging device, can be according to the demand of actual design, and select to utilize the backlight module framework of straight-down negative or side-light type; As shown in Figure 1, be the structure of general side light type back light module 1, mainly by pointolite 11, light guide plate 12, diffuser plate 13 and prism combination 14 are formed, this light guide plate 12 comprises an incidence surface 121, one bottom surface 122 of intersecting with this incidence surface 121, an and exiting surface 123 relative with this bottom surface 122,11 of this pointolites are arranged at a side that should incidence surface 121, and the light that sends of acceptance point light source 11, the light reflection that its bottom surface 122 will import, scattering, formation is along the homodisperse scattered beam of all directions, this exiting surface 123 should be derived light guide plate 12 by homodisperse light, and the guiding display panels is to reach the effect that display panels shows.

As shown in the figure, the exiting surface 123 of this light guide plate is provided with plural site 124, so that the light that passes through is carried out scattering and refraction action.Only, the light that sends because of pointolite enters from the incidence surface 121 of light guide plate 12, so light guide plate 12 is luminous brighter near the part of pointolite 11, and the part of point of distance light source 11 is luminous darker, so these site 124 designs still can not provide uniform luminosity effectively, and make the briliancy of whole backlight module lower.

The utility model content

In view of this, the technical matters that the utility model solved is to provide a kind of rising angle that can change light source, and can effectively promote the utilization factor of light and can improve the light conducting plate structure of its briliancy.

Light guide plate of the present utility model, its technical scheme is: include an incidence surface, one and this incidence surface bottom surface of intersecting at least, and an exiting surface relative with this bottom surface, and light source is arranged to a side that should incidence surface; Wherein, the bottom surface of this light guide plate or exiting surface wherein one side are provided with plural site, and another side then is provided with plural groove, can change its rising angle when light source is penetrated via this light guide plate, can effectively improve its briliancy.

The beneficial effects of the utility model are: can obtain a kind of rising angle that can change light source, and can effectively improve the light conducting plate structure of its briliancy.

Description of drawings

Fig. 1 forms Organization Chart for commonly using the backlight liquid crystal display module;

Fig. 2 is applied to the structural representation of backlight module for the first embodiment light guide plate in the utility model;

Fig. 3 is the structural perspective of the first embodiment light guide plate in the utility model;

Fig. 4 is applied to another structural representation of backlight module for the second embodiment light guide plate in the utility model;

Fig. 5 is applied to a structural representation again of backlight module for the second embodiment light guide plate in the utility model;

Fig. 6 is the structural representation of the 3rd embodiment light guide plate in the utility model;

Fig. 7 is the structural perspective of the 4th embodiment light guide plate in the utility model;

Fig. 8 is the structural perspective of the 5th embodiment light guide plate in the utility model.

[figure number explanation]

Backlight module 1 pointolite 11

Light guide plate 12 incidence surfaces 121

Bottom surface 122 exiting surfaces 123

Site 124 diffuser plates 13

Prism makes up 14 light guide plate 20

Incidence surface 21 bottom surfaces 22

Exiting surface 23 sites 24

Groove 25 light sources 31

Display panel 32 reflector plates 33

Blooming piece 40 diffusion sheets 41

Light-collecting piece 42

Embodiment

The utility model light guide plate, the structure of its light guide plate 20 as shown in Figures 2 and 3, it includes an incidence surface 21, one and this incidence surface 21 bottom surface 22 of intersecting at least, an and exiting surface 23 relative with this bottom surface 22, and one or above light source 31 be arranged at a side that should incidence surface 21, and this light source 31 can be pointolite or line source.

It focuses on: the bottom surface of this light guide plate or exiting surface wherein one side are provided with plural site, another side then is provided with plural groove, among the embodiment as shown in the figure, this light guide plate 20 is plate shaped, this exiting surface 23 is provided with plural site 24, this bottom surface 22 then is provided with plural groove 25, wherein, each site 24 recessed being arranged on the light guide plate 20, and each groove 25 recessed being arranged on the light guide plate 20, each groove 25 is a V-groove, and the vertex angle theta angle of this groove 25 is about 80～130 degree, and 25 of each grooves have constant spacing and are the parallel direction arrangement with each light source 31 (can be pointolite), utilize the effect of this plural number site 24 and groove 25, can change the rising angle that light penetrates light guide plate, can promote the utilization factor of light, and can effectively improve the briliancy of light.

When overall package is implemented, these light guide plate 20 tops are provided with plural blooming piece 40 and one or above display panel 32, to form the one-piece construction of backlight module 3, wherein, plural number blooming piece 40 is a slice diffusion sheet 41 and three light-collecting pieces 42 by light guide plate 20 tops in regular turn, and these light guide plate 20 belows are provided with reflector plate 33, by the setting of exiting surface (plural site) and bottom surface (the plural groove) of light guide plate, can improve the briliancy of whole backlight module light.

Certainly, plural blooming piece 40 also can be as shown in Figure 4, is a slice diffusion sheet 41, three light-collecting pieces 42 and two diffusion sheets 41 in regular turn by light guide plate 20 tops; Can also be as shown in Figure 5, plural blooming piece 40 is a slice diffusion sheet 41 and six light-collecting pieces 42 by light guide plate 20 tops in regular turn.

Wherein, second embodiment of this light guide plate as shown in Figure 4, this light guide plate 20 is a wedge shape, this bottom surface 22 is provided with plural site 24, this exiting surface 23 then is provided with plural groove 25, each site 24 and groove 25 protrude and are arranged on the light guide plate 20, and each groove 25 is a V-groove, and each groove 25 is the parallel direction arrangement for continous way (that is not having spacing between each groove) and with each light source 31 (can be pointolite).

Be illustrated in figure 6 as the 3rd embodiment of light guide plate, the groove 25 on this light guide plate 20 has constant spacing, and is the parallel direction arrangement with each light source 31 (can be pointolite), and each groove 25 is that curve extends.

Be illustrated in figure 7 as the 4th embodiment of light guide plate, the spacing of the groove 25 on this light guide plate 20 by incidence surface 21 towards other side decrescence and is parallel direction with light source 31 (can be line source) and arranges, and each groove 25 is the straight line extension.

Be illustrated in figure 8 as the 5th embodiment of light guide plate, each groove 25 is continous way (that is not having spacing between each groove) on this light guide plate 20, and arranges in vertical direction with each light source 31 (can be pointolite), and each groove 25 extends for straight line.

As mentioned above, the utility model provides backlight module another preferable feasible light conducting plate structure, and the application of novel patent is offered in the whence in accordance with the law; Only, above implementation and graphic shown in, the utility model preferred embodiment person, be not to limit to the utility model with this, be with, approximate with structure of the present utility model, device, feature etc. such as, identical person all should belong to of the present utility model founding within purpose and the claim.

Claims

1, a kind of light guide plate, its light guide plate include an incidence surface, one and this incidence surface bottom surface of intersecting at least, and an exiting surface relative with this bottom surface, and light source is arranged at a side that should incidence surface; It is characterized in that:

The bottom surface of this light guide plate or exiting surface wherein one side are provided with plural site, and another side then is provided with plural groove.

2, light guide plate according to claim 1 is characterized in that this bottom surface is provided with plural site, and this exiting surface then is provided with plural groove, or this exiting surface is provided with plural site, and this bottom surface then is provided with plural groove.

3, light guide plate according to claim 1 is characterized in that, each site or groove are recessed or protrude and be arranged on the light guide plate.

4, light guide plate according to claim 1 is characterized in that, respectively this groove is that straight line extends or curve extends.

5, light guide plate according to claim 1 is characterized in that, each groove is parallel direction or vertical direction is arranged.

6, light guide plate according to claim 1 is characterized in that, each groove is parallel direction to be arranged, and the spacing of each groove by incidence surface towards other side decrescence.

7, as light guide plate as described in the claim 1,5 or 6, wherein, the drift angle angle of this groove is 80～130 degree.

8, light guide plate according to claim 1 is characterized in that this light guide plate is plate shaped or wedge shape.

9, light guide plate according to claim 1 is characterized in that a side of this light guide plate incidence surface is provided with one or above light source, and this light guide plate top also is provided with plural blooming piece, and has one or above display panel to be arranged at plural blooming piece top.

10, as light guide plate as described in the claim 9, it is characterized in that, the plural number blooming piece is a slice diffusion sheet and three light-collecting pieces by the light guide plate top in regular turn, perhaps is a slice diffusion sheet, three light-collecting pieces and two diffusion sheets in regular turn, also or in regular turn is a slice diffusion sheet and six light-collecting pieces.