CN201003719Y

CN201003719Y - Light conductive board and the backlight module using same

Info

Publication number: CN201003719Y
Application number: CNU2006201600916U
Authority: CN
Inventors: 张裕政; 蔡荣智
Original assignee: Taiwan Nano Electro Optical Technology Co Ltd
Current assignee: Fuxiang Industrial Co., Ltd.
Priority date: 2006-11-28
Filing date: 2006-11-28
Publication date: 2008-01-09
Anticipated expiration: 2016-11-28

Abstract

The utility model relates to a light conducting board, at least comprising a light entering face, a bottom face intersected with the light entering ace and a light out face opposite to the bottom face, as well as a light source arranged in one side of the light entering face. Wherein, the place between the bottom face and the light out face of the light conducting board is provided with a plurality of stipples to make the light out angle can be changed when the light source is emitted out through the light conducting board, having the advantages of effectively improving the luminance and reducing the using of other optical membranes when utilizing the light conducting board to make a backlighting mold to reduce the cols and reduce the thickness of the integral backlighting mold.

Description

LGP and use the backlight module of this LGP

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 illuminating unit.

Background technology

General LCD (Liquid Crystal Display, LCD) backlight module (BackLight Unit, BLU) basic structure is formed as shown in Figure 1, by LGP (LGP) 11, be located at LGP 11 plate edge positions light source 12, be located at the reflection diaphragm 13 of LGP 11 belows, and the assemblies of being located between LGP 11 and the display floater 17 such as blooming piece constitute.

Wherein, the major function of LGP 11 is to convert the directional light of light source 12 incidents to the plane vertical light by light principle at random, but in order to reach all effects of light of scattering, usually set blooming piece between LGP 11 and display floater 17, it is mainly in regular turn by down diffusion sheet 14, two prismatic lenses 15 and go up diffusion sheet 16 and formed, with the equal effect of light of scattering; Yet the use that increases the number blooming piece has in addition not only increased cost, and the assembling of its each blooming piece, also can increase the thickness of this backlight module, has run counter to light, thin, short, little demand.

The utility model content

In view of this, the purpose of this utility model is to provide a kind of rising angle that can change light source, and can effectively improve the light conducting plate structure of its briliancy, and when utilizing this LGP to be assembled into backlight module, can reduce the use of other blooming piece, to reduce cost and the thickness of whole backlight module is reduced.

LGP of the present utility model includes 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; Wherein, the bottom surface of this LGP and exiting surface place are provided with some sites.

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 the structural perspective of LGP in the utility model;

Fig. 3 is the structural perspective of bottom surface of light guide plate in the utility model;

Fig. 4 is that the backlight module of first embodiment in the utility model is formed Organization Chart;

Fig. 5 is that the backlight module of second embodiment in the utility model is formed Organization Chart;

Fig. 6 is that the backlight module of the 3rd embodiment in the utility model is formed Organization Chart.

[figure number explanation]

11 LGPs, 12 light sources

14 times diffusion sheets of 13 reflection diaphragms

15 prismatic lenses, 151 light harvesting prism mechanism

Diffusion sheet 17 display floaters on 16

21 LGPs, 211 incidence surfaces

212 bottom surfaces, 213 exiting surfaces

31 sites

The specific embodiment

The structural improvement of the utility model LGP, the structure of its LGP 21 as shown in Figures 2 and 3, it includes an incidence surface 211, one and this incidence surface 211 bottom surface 212 of intersecting at least, and an exiting surface 213 relative with this bottom surface 212, and light source 12 is arranged at a side that should incidence surface 211.

It focuses on: the bottom surface 212 and exiting surface 213 places of this LGP 21 are provided with some sites 31, each site 31 can be recessed into or protrude and be arranged on the LGP 21, its surface is a minute surface, and each site 31 can any irregular size and arrangement be arranged on the LGP 21, after making light source 12 enter this LGP 21 by incidence surface 211, utilize the effect of this site 31, can change the rising angle that light penetrates LGP, and can effectively improve the briliancy of light.

When overall package is implemented, this backlight module (Back Light Unit, BLU) basic structure form equally by LGP (LGP) 21, be located at the incidence surface 211 of LGP light source 23, be located at the reflection diaphragm 13 of LGP 21 belows, and the assemblies of being located between LGP 21 and the display floater 17 such as blooming piece constitute, and as shown in Figure 4, the blooming piece between its LGP 21 and the display floater 17 can be in regular turn be a diffusion sheet 14 and a prismatic lens 15; As shown in Figure 5, be second embodiment that this backlight module is formed, the blooming piece between its LGP 21 and the display floater 17 can be diffusion sheet 15 on a prismatic lens 15 and in regular turn; As shown in Figure 6, be second embodiment that this backlight module is formed, the blooming piece between its LGP 21 and the display floater 17 can be two prismatic lenses 15 in regular turn, and set light harvesting prism mechanism 151 becomes X, Y direction to arrange respectively on each prismatic lens 15.

What deserves to be mentioned is, when utilizing LGP of the present utility model to be assembled into backlight module, can be different from practise the blooming piece have between LGP and display floater at least need 4 (include diffusion sheet, two prismatic lenses and go up diffusion sheet) down, the utility model only needs 2 blooming pieces (include a following diffusion sheet and a prismatic lens, go up diffusion sheet and a prismatic lens or two prismatic lenses) to get final product, can reduce the use of other blooming piece, to reduce cost and the thickness of whole backlight module is reduced, to meet light, thin, short, little demand.

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

Claims

1, a kind of LGP, its LGP 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 LGP and exiting surface place are provided with some sites.

2, LGP according to claim 1 is characterized in that, each site is recessed or protrude and be arranged on the LGP.

3, LGP according to claim 1 is characterized in that each surface, site is a minute surface.

4, a kind of backlight module is characterized in that, it includes at least:

LGP as claimed in claim 1;

Light source, this light source are arranged at a side of corresponding LGP incidence surface;

Diffusion sheet once, it is arranged at the LGP top;

One prismatic lens, it is arranged at down the diffusion sheet top;

One display floater, it is arranged at the prismatic lens top.

As backlight module as described in the claim 4, it is characterized in that 5, this LGP below is provided with reflection diaphragm.

6, a kind of backlight module is characterized in that, it includes at least:

LGP as claimed in claim 1;

One prismatic lens, it is arranged at the LGP top;

Diffusion sheet on one, it is arranged at the prismatic lens top;

One display floater, it is arranged at the diffusion sheet top.

As backlight module as described in the claim 6, it is characterized in that 7, this LGP below is provided with reflection diaphragm.

8, a kind of backlight module is characterized in that, it includes at least:

LGP as claimed in claim 1;

Two prismatic lenses, it is arranged at the LGP top;

One display floater, it is arranged at the prismatic lens top.

As backlight module as described in the claim 8, it is characterized in that 9, set light harvesting prism mechanism becomes X, Y direction to arrange respectively on each prismatic lens.

As backlight module as described in the claim 8, it is characterized in that 10, this LGP below is provided with reflection diaphragm.