CN201251635Y

CN201251635Y - Light guiding device and backlight module

Info

Publication number: CN201251635Y
Application number: CNU2008201332803U
Authority: CN
Inventors: 林明传; 吴光闵; 傅秋志; 王星发; 王士诚; 林宗亿
Original assignee: Wintek Corp
Current assignee: Wintek Corp
Priority date: 2008-09-11
Filing date: 2008-09-11
Publication date: 2009-06-03
Anticipated expiration: 2018-09-11

Abstract

The utility model relates to a light guiding device and a backlight module. The backlight module comprises the light guiding device and a plurality of luminous sources; the light guiding device comprises a frame; a frame edge is formed on the peripheral wall of the frame; the frame edge is internally provided with an integrated light guiding plate; the light guiding plate is provided with a light exit surface in one surface of the frame edge; one end of the light guiding plate forms a light entrance surface with the frame edge; a plurality of slots are arranged between the light guiding plate and the frame edge; the slots are arranged at the position opposite to the light entrance surface arranged on one end of the light guiding plate; the inner side of the light guiding plate near to the slots is provided with a retaining wall; because the retaining wall retains light rays coming out from the frame edge, the retaining wall can reflect the light rays back to the backlight module to increase the light utilization efficiency.

Description

Guiding device and backlight module

Technical field

The utility model refers to a kind of guiding device and backlight module thereof that forms barrier wall structure in the light guide plate side especially relevant for a kind of backlight module.

Background technology

Generally being seen on the market at present backlight module, assembled in conjunction with a framework by a light guide plate, alternative backlight module is that a transparent light guide plate and a framework is made of one piece, wherein integrated assembling mode mostly applies to the mobile phone sub-screen, and has volume effect little, easy to assembly and simple in structure.Look into TaiWan, China patent publication No. 200611025, its technical characterictic as shown in Figure 1, this light guide structure includes a light guide plate 11 and one framed 13, this light guide plate 11 is framed 13 one-body molded with this, this light guide plate 11 comprises an incidence surface 12, exiting surface 14 and a plural opening 16 adjacent with this incidence surface 12, this plural number opening 16 is arranged at this light guide plate 11 and framed 13 junctions, wherein each opening 16 comprises a curved corner 161 and the side 162 adjacent with this curved corner 161, this curved corner 161 is a circular arc, and this side 162 is an atomization surface.

Though above-mentioned conventional construction is all simple and be easy to assembling, but on using, it still has some disappearances: one, in the mode of light guide plate in conjunction with framework, its in around be easy to generate light leak, and if the resistance light of mobile phone itself design then can be found light beam not satisfactory on mobile phone, and if mobile phones design is careless slightly and do not consider this part, its subsequent design then can produce many obstructions, so go up real undesirable in utilization; Its two its produce the also variation in the lump of utilization factor that the problem that is right after generation after light leak situation promptly is a light, so its design of commonly using still remains improvements.

The utility model content

Because the shortcoming that prior art produced, the purpose of this utility model is, provides a kind of light source that can block to continue to transmit the light leak that causes outside module, and then increases the guiding device and the backlight module of light utilization efficiency.

For achieving the above object, the utility model provides a kind of guiding device, includes: a framework, and this framework forms an edge in periphery wall; An and light guide plate, this light guide plate is shaped in the edge inside of this framework, and this light guide plate forms an exiting surface in the inner one side of this edge, and be formed with an incidence surface between an end of this light guide plate and edge, offer a plurality of hole slots between this light guide plate and this edge, those hole slots are opened in the position that this light guide plate differs from this incidence surface, and this light guide plate is equipped with a barricade respectively adjacent to the inboard of those hole slots.

In addition,, blooming piece is put in this accommodation space, avoided the blooming piece slippage via above-mentioned this blocking-up structure moulding one accommodation space.But these framework design alteration overall dimensions backlight are used this blocking-up structure to guarantee the complete of blooming piece in addition, avoid meaningless waste and reach the demand that reduces cost.

The utility model utilizes a kind of blocking-up structure to block the transmission of light, make light via originally entity change into set up an interval air particles as transmitting meson, be revealed in the light of module with weakening, and block lasting outside module, the transmission of light source by this barricade and cause light leak, and can make this barricade with in the light reflected back backlight module, and then increase the utilization factor of light.

Below illustrate the utility model by specific implementations, make and be familiar with the correlation technique personage and can understand advantage of the present utility model and effect easily by the content of this instructions and graphic announcement, under based on spirit of the present utility model, the every details in the instructions also can be carried out various enforcements and change based on different viewpoints and application.

Description of drawings

Fig. 1 is known light guide structure synoptic diagram.

Fig. 2 is a guiding device synoptic diagram of the present utility model.

Fig. 3 is a guiding device diagrammatic cross-section of the present utility model.

Fig. 4 is a backlight module schematic perspective view of the present utility model.

The primary clustering symbol description

11 light guide plate

12 incidence surfaces

13 is framed

14 exiting surfaces

16 openings

161 curved corners

162 sides

2 guiding devices

20 light guide plate

21 incidence surfaces

22 exiting surfaces

23 barricades

30 frameworks

31 frameworks

32 edges

33 hole slots

40 light shield devices

50 accommodation spaces

51 blooming groups

60 light emitting sources

Embodiment

For further cognitive and understanding being arranged to feature of the present utility model, purpose and function, hereinafter the spy describes relevant thin portion structure of the utility model and design concept reason, and to understand characteristics of the present utility model, detailed description is presented below:

Now cooperate following graphic explanation detailed structure of the present utility model and connection relationship thereof:

See also shown in Figure 2ly, be guiding device synoptic diagram of the present utility model.Guiding device 2 shown in the figure, it includes the framework 30 that a light guide plate 20 and is located in these light guide plate 20 peripheries.

This light guide plate 20 is a transparent material, and this light guide plate 20 has an incidence surface 21 (as shown in Figure 4) and an exiting surface 22 adjacent with this incidence surface 21, the side of 22 3 directions of this exiting surface is provided with a plurality of barricades 23, this barricade 23 can stop that light causes light leak towards framework 30 direction transmission, and can be with light reflected back light guide plate 20 inside of desiring to external diffusion;

This framework 30 is a light-transmitting materials, and this framework 30 is to expect the one ejection formation together with light guide plate 20, this framework 30 also can be light tight material in addition, this framework 30 is made so that extra quality ejaculation is one-body molded with this light guide plate 20, and this framework has a framework 31 and an edge 32, this framework 30 is established and is the frame shape, and form this edge 32 in periphery wall, form this framework 31 between this edge 32 and this light guide plate 20, this framework 31 has a difference in height (H) with this edge 32, offer a plurality of hole slots 33 between this light guide plate 20 and this framework 31, this hole slot 33 is respectively in abutting connection with this barricade 23 and this framework 31.This barricade 23 is for nonseptate continuity body of wall or have the spaced discontinuities body of wall, and these barricade 23 end faces and this framework 31 surfaces are positioned at same level height.

See also shown in Figure 3ly again, be guiding device diagrammatic cross-section of the present utility model.As shown in FIG., across being provided with a light shield device 40, this light shield device 40 is a light non-transmittable layers between these barricade 23 end faces and this framework 31 surfaces, a two-sided light tight adhesive tape for example, but visual actual needs uses other light tight material, not as limit.And the in addition face that this light guide plate 20 differs from this barricade 23 can be provided with a reflector plate, and some barricades of these light guide plate 20 surface formings can be around forming an accommodation space 50 (as shown in Figure 4), can a ccontaining blooming group 51 in this accommodation space 50.

See also shown in Figure 4ly again, be backlight module schematic perspective view of the present utility model.Backlight module of the present utility model comprises an above-mentioned guiding device and several light emitting sources 60, and this light emitting source 60 is arranged at a side of this guiding device incidence surface 21, and this light emitting source 60 is a light emitting diode.

In sum, all dark well-off progressive of executing has the value of industry on the purpose of this utility model and the effect, and be at present not seen before on the market novel, meets patent requirement fully, hence files an application in accordance with the law.But the above only is preferred embodiment of the present utility model, when can not with the scope implemented of qualification the utility model.Promptly the equalization of being done according to the utility model claim generally changes and modifies, and all should still belong in the scope that the utility model patent contains.

Claims

1, a kind of guiding device is characterized in that, includes:

One framework, this framework forms an edge in periphery wall; And

One light guide plate, this light guide plate is shaped in the edge inside of this framework, and this light guide plate forms an exiting surface in the inner one side of this edge, and be formed with an incidence surface between an end of this light guide plate and edge, offer a plurality of hole slots between this light guide plate and this edge, those hole slots are opened in the position that this light guide plate differs from this incidence surface, and this light guide plate is equipped with a barricade respectively adjacent to the inboard of those hole slots.

2, guiding device as claimed in claim 1 is characterized in that: this framework is formed with a framework between this edge and this light guide plate.

3, guiding device as claimed in claim 1 is characterized in that: this barricade is continuity body of wall or uncontinuity body of wall.

4, guiding device as claimed in claim 1 is characterized in that: this framework and this light guide plate are one-body molded with extra quality method of radiation.

5, guiding device as claimed in claim 1 is characterized in that: this framework is a light-transmitting materials.

6, guiding device as claimed in claim 1 is characterized in that: this framework is a light tight material.

7, guiding device as claimed in claim 1 is characterized in that: this light guide plate is a transparent material.

8, guiding device as claimed in claim 2 is characterized in that: this barricade end face and this framework surface are positioned at same level height.

9, guiding device as claimed in claim 2 is characterized in that: this barricade end face and this framework surface span are provided with a light shield device.

10, guiding device as claimed in claim 9 is characterized in that: this light shield device is a light non-transmittable layers.