CN101368707B

CN101368707B - Backlight module and rear panel

Info

Publication number: CN101368707B
Application number: CN2008101701696A
Authority: CN
Inventors: 蔡佳勋; 邱振铭; 叶国良
Original assignee: AU Optronics Corp
Current assignee: AU Optronics Corp
Priority date: 2008-10-13
Filing date: 2008-10-13
Publication date: 2013-03-27
Anticipated expiration: 2028-10-13
Also published as: CN101368707A

Abstract

Disclosed are a backlight module and the backplane thereof. The backlight module comprises a backplane, a front frame, a light source structure and an optical diaphragm group. The backplane comprises a frame component and a shade plate; wherein, a hollow part is formed in the frame component; the hollow part is covered by the shade plate; besides, the frame component is provided at least a reinforced part; the front frame is combined with the backplane; a containing space is formed between the front frame and the backplane; the light source structure is arranged in the containing space and positioned on the backplane; the optical diaphragm group is arranged in the containing space and positioned on the light source structure. The frame component mode is adopted to reduce weight; the reinforced part is adopted to increase the support force; the shape plate is used for shading lights and preventing the light exposition.

Description

Backlight module and backboard thereof

Technical field

The present invention relates to a kind of backboard, and be particularly related to a kind of backboard that is applicable to a backlight module.

Background technology

Display technique is flourishing in modern information, under the situation of a computer of staff, develops by leaps and bounds.Except the attention on color displays, compact also is an important consideration.On the display in modern times, mostly the back board part of backlight module is to form through after processing with the piece of metal plate.Aspect weight, the structure of whole piece sheet metal is heavier.

Therefore, how to design a new back board structure, weight can be alleviated, cost descends, and does not but affect whole anchorage force, is an industry problem demanding prompt solution for this reason.

Summary of the invention

The object of the present invention is to provide a kind of backboard and backlight module, it can alleviate weight, and cost descends, and does not but affect whole anchorage force, and can reach and prevent that light from exposing and dispel the heat.

For achieving the above object, the invention provides a kind of backboard, be applicable to the dorsal part of a side light type back light module, backboard comprises: framing component is formed with a hollow space, and has at least one reinforcement part on the framing component; And anti-dazzling screen, cover hollow space.

The present invention also provides a kind of side light type back light module, comprises: backboard, front frame, light-source structure and optical diaphragm group.Backboard includes a framing component and an anti-dazzling screen, and wherein framing component is formed with a hollow space, and anti-dazzling screen is covered in hollow space, in addition, has at least one reinforcement part on the framing component; Front frame is combined with backboard, and and backboard between be formed with an accommodation space; Light-source structure is arranged in the accommodation space, and is positioned on the backboard; And optical diaphragm group is arranged in the accommodation space, and is positioned on the light-source structure.

The invention has the advantages that the mode that to utilize framing component, make weight saving, and increase anchorage force by the reinforcement part, and utilize anti-dazzling screen to stop light, expose to avoid light.

Behind the embodiment of consulting accompanying drawing and describing subsequently, this technical field technician just can understand purpose of the present invention, and technological means of the present invention and form of implementation.

Description of drawings

For above and other purpose of the present invention, feature, advantage and embodiment can be become apparent, appended graphic being described in detail as follows:

Fig. 1 is the exploded view of the backlight module of the first embodiment of the present invention;

Fig. 2 A is the schematic diagram of a framing component of the first embodiment of the present invention;

Fig. 2 B is the vertical view of a framing component of the first embodiment of the present invention;

Fig. 2 C is that the reinforcement part of one embodiment of the invention is along a sectional view of A direction;

Fig. 2 D is that the reinforcement part of another embodiment of the present invention is along a sectional view of A direction;

Fig. 3 A to Fig. 3 C is a sectional side view of the backlight module of one embodiment of the invention;

Fig. 4 A is the schematic diagram of a framing component of the second embodiment of the present invention; And

Fig. 4 B is the vertical view of a framing component of the second embodiment of the present invention.

Wherein, description of reference numerals is as follows:

1: backlight module 10: front frame

11: optical diaphragm group 12: light-source structure

12a light guide plate 12b: reflecting plate

13: backboard 2: framing component

20,21:L shape frame 200,201,202: reinforcement part

203,204: closing line 205: groove

206: fin 22: hollow space

3: anti-dazzling screen 40-43: the strip frame

400-403: closing line 404,405,406: reinforcement part

42: hollow space

Embodiment

Please refer to Fig. 1, it is the exploded view of the backlight module 1 of the first embodiment of the present invention.Backlight module 1 comprises front frame 10, optical diaphragm group 11, light-source structure 12 and backboard 13.Front frame 10 is positioned at a front side of backlight module 1, and, front frame 10 and backboard 13 combinations.Light-source structure 12 is positioned on the backboard 13.Light-source structure 12 comprises in fact the parts such as light source (not shown), light guide plate 12a, reflecting plate 12b.And optical diaphragm group 11 is positioned on the light-source structure 12.Wherein light-source structure 12 and optical diaphragm group 11 all are arranged in front frame 10 and backboard 13 in conjunction with a rear formed accommodation space (not shown), and by chimeric fixing.

Backboard 13 comprises a framing component 2.Framing component 2 is shown in Fig. 2 A, and it is the schematic diagram of a framing component 2 of the first embodiment of the present invention.In the present embodiment, framing component 2 comprises two L

shaped frames

20 and 21, two L

shaped frames

20 and 21 chimeric each other.Therefore, be formed with a hollow space 22 in the middle of the framing component 2.Framing component 2 is a metal material in the present embodiment, shown in Fig. 2 B, it is the vertical view of framing component 2, also is formed with reinforcement part 200,201 and 202 on the framing component 2, wherein reinforcement part 200 is positioned on the L shaped frame 20, and

reinforcement part

201 and 202 is formed on the L shaped frame 21.And the joint of two L

shaped frames

20 and 21 has a closing line 203 and 204.Reinforcement part 200,201 and 202 structure, 200 are example take the reinforcement part, can be shown in Fig. 2 C, its be reinforcement part 200 along a sectional view of A direction, be the form of a groove 205.In another embodiment, reinforcement part 200 can shown in Fig. 2 D, be the form of a fin 206.

Backboard 13 also comprises an anti-dazzling screen 3, in order to the hollow space 22 of cover framework member 2.The material of anti-dazzling screen 3 is a plastic cement diaphragm or a tinsel.By framing component 2 and the frivolous anti-dazzling screen 3 of material with hollow space 22, the weight of backboard 13 is compared down with the design that directly forms with sheet metal, can significantly reduce weight.And the anti-dazzling screen 3 that material is frivolous with low cost also significantly reduced the manufacturing cost of backboard 13.Anti-dazzling screen 3 in fact also has the effect of heat radiation except having the light that the light source that stops light-source structure 12 exposes, form such as the tinsel with high thermal conductivity, can obtain better radiating effect.As shown in Figure 3A, be a sectional side view of backlight module 1.Anti-dazzling screen 3 is connected in an inboard of light-source structure 12 in an embodiment.In another embodiment, shown in Fig. 3 B, anti-dazzling screen 3 is connected in fact between an inboard of the outside of light-source structure 12 and framing component 2.In another embodiment, shown in Fig. 3 C, anti-dazzling screen 3 is connected on the outside of framing component 2.Above-mentioned three kinds of connected modes cover the hollow space 22 of framing component 2 and stop the light that the light source of light-source structure 12 exposes.

Framing component 2 also can be formed by four strip frame 40-43 shown in Fig. 4 A and Fig. 4 B with two L-

type frames

20 and 21 formation except above-mentioned, and four strip frame 40-43 are chimeric each other, and have closing line 400-403 in chimeric place.Similarly, the framing component 2 of the present embodiment also comprises a hollow space 42, and on

strip frame

41,42 and 43, be formed with respectively reinforcement part 404,405 and 406.Framing component 2 also can be directly integrally formed in other embodiment, but not by two L-type frames or four chimeric formation of strip frame.

Backboard of the present invention is formed by framing component and anti-dazzling screen, all can reduce manyly on weight and cost, and the reinforcement part by framing component increases anchorage force, utilizes anti-dazzling screen to reach and prevents the effect that light exposes and dispels the heat.

Although the present invention discloses as above by a preferred embodiment; but it is not to limit the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can do variation and the modification of various identity properties, so protection scope of the present invention should be looked the appending claims limited range and is as the criterion.

Claims

1. backboard is applicable to a dorsal part of a side light type back light module, and this backboard comprises:

One framing component is formed with a hollow space, and has at least one reinforcement part on this framing component; And

One anti-dazzling screen covers this hollow space.

2. backboard as claimed in claim 1, wherein this framing component comprises two L shaped frames, described two L shaped frames are chimeric each other.

3. backboard as claimed in claim 1, wherein this framing component is included as four strip frames, and described four strip frames are chimeric each other.

4. backboard as claimed in claim 1, wherein this framing component is metal material.

5. backboard as claimed in claim 1, wherein this reinforcement part is a groove or a fin.

6. backboard as claimed in claim 1, wherein this anti-dazzling screen is connected on the inboard or outside of described at least one framing component.

7. backboard as claimed in claim 1, wherein this anti-dazzling screen is a plastic cement diaphragm or a tinsel.

8. side light type back light module comprises:

One backboard includes a framing component and an anti-dazzling screen, and wherein this framing component is formed with a hollow space, and has at least one reinforcement part on this framing component, and this anti-dazzling screen is covered in this hollow space;

One front frame is combined with this backboard, and and this backboard between be formed with an accommodation space;

One light-source structure is arranged in this accommodation space, and is positioned on this backboard; And

One optical diaphragm group is arranged in this accommodation space, and is positioned on this light-source structure.

9. side light type back light module as claimed in claim 8, wherein this reinforcement part is positioned on the surface of framing component.

10. side light type back light module as claimed in claim 8, wherein this framing component comprises two L shaped frames, described two L shaped frames are chimeric each other.

11. side light type back light module as claimed in claim 8, wherein this framing component is included as four strip frames, and described four strip frames are chimeric each other.

12. side light type back light module as claimed in claim 8, wherein this reinforcement part is a groove or a fin.

13. side light type back light module as claimed in claim 8, wherein this anti-dazzling screen is connected in fact an inboard of this light-source structure.

14. side light type back light module as claimed in claim 8, wherein this anti-dazzling screen is connected in fact between an inboard of the outside of this light-source structure and described at least one framing component.

15. side light type back light module as claimed in claim 8, wherein this anti-dazzling screen is connected on the outside of described at least one framing component.

16. side light type back light module as claimed in claim 11, wherein this anti-dazzling screen is a plastic cement diaphragm or a tinsel.