CN100353231C - Back light module - Google Patents
Back light module Download PDFInfo
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- CN100353231C CN100353231C CNB2005100530070A CN200510053007A CN100353231C CN 100353231 C CN100353231 C CN 100353231C CN B2005100530070 A CNB2005100530070 A CN B2005100530070A CN 200510053007 A CN200510053007 A CN 200510053007A CN 100353231 C CN100353231 C CN 100353231C
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- backlight module
- support column
- supporting construction
- diffuser plate
- buffer element
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Abstract
The present invention relates to a back light module. The present invention comprises a reflecting plate, an optical element and a supporting structure, wherein the supporting structure is arranged on the reflecting plate, and comprises a supporting column and a buffer element; the buffer element is arranged between the supporting column and the reflecting plate. The supporting structure contacts the optical element and limits the deformation of the optical element. The supporting structure provides supporting power in at least two directions for the optical element, and the buffer element admits that the top end of the supporting column can move within a movable range.
Description
Technical field
The present invention relates to a kind of backlight module, particularly relate to a kind of backlight module that is applied to the large scale liquid crystal screen.
Background technology
When lcd technology is applied to large-sized display when (as, LCD TV), because the size of optical elements such as diffuser plate, prismatic lens becomes big, its buckling deformation that causes because of expanding with heat and contract with cold will cause tangible influence to the optical characteristics of display.Therefore, be head it off, develop and many backlight modules, with the warping phenomenon of optical elements such as restriction diffuser plate with different supporting constructions.
With reference to Fig. 1 a, it shows the disclosed backlight module 10 of Japanese 10-326517 patent, and it mainly utilizes support component 14, is located between reflecting plate 11 and the diffuser plate 12, with the distortion of restriction diffuser plate 12.Its shortcoming is, owing to have a tolerance clearance usually between the housing of diffuser plate 12 and display, therefore, diffuser plate 12 is in the process of rising-heat contracting-cold, can and support component 14 between produce the mutual motion be parallel to exiting surface (as among Fig. 1 a arrow indicated), and cause soft flocks and different sound because of phase mutual friction each other.
With reference to Fig. 1 b, its demonstration TaiWan, China is announced the disclosed backlight module 100 of patent No. 591300, and it is arranged on support component 120 on the reflecting plate 110, with the distortion of restriction diffuser plate 140.And because its complex structure has improved the cost of making.And,, therefore increased the thickness of backlight module because fluorescent tube 130 is placed on the support component 120.
With reference to Fig. 2 a, its demonstration TaiWan, China is announced the disclosed backlight module of patent No. 592324, the supporting construction that it utilizes support component 241 and spring 24 to be formed, the distortion of restriction diffuser plate 23.Yet because spring 24 only can provide the anchorage force (perpendicular to the anchorage force of exiting surface) of single direction, therefore, its support effect is not good.
With reference to Fig. 2 b, its demonstration TaiWan, China is announced the disclosed another kind of backlight module of patent No. 592324, it sets up limiting element 214, to improve the support effect of supporting construction, yet, as Japanese 10-326517 patent, it also causes soft flocks and different sound because of support component 241 with the mutual friction mutually of diffuser plate 232.In addition, by the supporting construction that support component 241 and spring 24 are formed, its manufacturing cost is also higher, and because the volume desire of spring 24 is little difficult, therefore same meeting has increased the thickness of backlight module.
Summary of the invention
The present invention is promptly in order to solve above-mentioned prior art problems, and a kind of backlight module that provides comprises a reflecting plate, a diffuser plate and a supporting construction.Comprise a support column and a buffer element.The top of the support column of this supporting construction contacts this diffuser plate.Buffer element is located between support column and the reflecting plate.Wherein, supporting construction contact diffuser plate, and the distortion of restriction diffuser plate.Supporting construction provides the anchorage force of at least two directions to diffuser plate.And buffer element allows that the top of support column is mobile in a movable range.
Because the support column top of supporting construction of the present invention can be moved in a movable range with diffuser plate.Therefore, can avoid support column and diffuser plate friction and the soft flocks and the different sound that cause.Support structure configuration of the present invention again is simple, and is located between the fluorescent tube, therefore, can not influence the thickness of backlight module, and has advantage with low cost.In addition, supporting construction of the present invention provides multidirectional supporting capacity, therefore has preferable support effect.
Description of drawings
Fig. 1 a is the disclosed backlight module synoptic diagram of existing Japanese 10-326517 patent;
Fig. 1 b is that existing TaiWan, China is announced the disclosed backlight module synoptic diagram of patent No. 591300;
Fig. 2 a is that existing TaiWan, China is announced the disclosed backlight module synoptic diagram of patent No. 592324;
Fig. 2 b is that existing TaiWan, China is announced the disclosed another kind of backlight module synoptic diagram of patent No. 592324;
Fig. 3 a is a backlight module synoptic diagram of the present invention;
Fig. 3 b is the supporting construction synoptic diagram of backlight module of the present invention;
Fig. 4 a is the situation figure that the supporting construction of backlight module of the present invention moves with diffuser plate;
Fig. 4 b is the situation figure that the supporting construction of backlight module of the present invention provides support diffuser plate;
Fig. 4 c is the situation figure that the supporting construction of backlight module of the present invention provides support the diffuser plate of different distortion situation;
Fig. 5 a forms the situation figure of rough surface for the support column top;
Fig. 5 b is the situation figure that adhesion material is set between support column and the diffuser plate;
Fig. 6 is the supporting construction synoptic diagram of the second embodiment of the present invention;
Fig. 7 is the supporting construction synoptic diagram of the third embodiment of the present invention.
Embodiment:
[first embodiment]
With reference to Fig. 3 a, it shows backlight module 300 of the present invention, and it has supporting construction 310, reflecting plate 320, housing 330, diffuser plate (optical element) 340 and fluorescent tube 350.Reflecting plate 320 forms an accommodation space 321 with diffuser plate 340.Fluorescent tube 350 and supporting construction 310 promptly are located among the accommodation space 321, supporting construction 310 and between fluorescent tube 350.Reflecting plate 320 is contained among the housing 330 formed accommodation spaces 331, and diffuser plate 340 then is placed on the housing 330.The light of backlight module 300 is provided by fluorescent tube 350, and penetrates towards exiting surface 301.
With reference to Fig. 3 b, it shows the supporting construction 310 of backlight module of the present invention.Supporting construction 310 is made of support column 311 and buffer element 312.Support column 311 is coniform, and its material can be plastics.Buffer element 312 is the block flexible member of a homogeneous, and its material can be polyurethane, silicon or rubber.The color of support column 311 and buffer element 312 is a white or transparent, to avoid the generation of blanking bar.Support column 311 is to be connected with buffer element 312 in the mode of sticking, and buffer element 312 also is located on the reflecting plate 320 in the mode of sticking.
Characteristics of the present invention are, as shown in Fig. 4 a, when moving around on diffuser plate 340 is being parallel to the direction of exiting surface 301, the top of support column 311 can be moved in a movable range d with diffuser plate 340.Therefore, soft flocks and the different sound that can avoid support column 311 to cause with diffuser plate 340 frictions.
Simultaneously, as shown in Fig. 4 b,, therefore can provide anchorage force (first anchorage force) perpendicular to exiting surface direction (first direction y) because padded coaming 312 is a homogeneous bulk flexible member, and the anchorage force (second anchorage force) that is parallel to exiting surface direction (for example, second direction x).Therefore, no matter whether support column 311 moves with diffuser plate 340 and is in state vertical or that tilt, and padded coaming 312 all can correspondingly provide enough anchorage forces (for example, anchorage force F1 or anchorage force F2), with the torsional deformation of restriction diffuser plate 340.In addition, as shown in Fig. 4 c, based on identical principle, regardless of the deformation direction of diffuser plate 340, padded coaming 312 also all can correspondingly provide enough anchorage forces (for example, anchorage force F3 or anchorage force F4).Therefore can provide the good supporting effect.
In addition, for increasing the friction force between support column 311 and the diffuser plate 340, the material of support column 311 also can use for diffuser plate, can produce the material of big friction force, for example transparent rubber.Or with reference to Fig. 5 a, the top of support column 311 also can form rough surface 3111 when making.Or, between support column 311 and diffuser plate 340, adhesion material 3112 being set as shown in Fig. 5 b, double faced adhesive tape for example is to promote friction force.
[second embodiment]
With reference to Fig. 6, it shows the supporting construction 410 of the second embodiment of the present invention.The characteristics of second embodiment are, are provided with a bolt 313 (retaining element) in the supporting construction 410, and bolt 313 passes reflecting plate 320, and fix by nut 314 in the back side of reflecting plate 320.Thus to strengthen the supporting capacity of supporting construction 410.Among this embodiment, it is not dark that bolt 313 stretches into the degree of depth of support column 311, so the top of support column 311 still can be moved in this movable range with diffuser plate.
[the 3rd embodiment]
With reference to Fig. 7, it shows the supporting construction 510 of the third embodiment of the present invention.The characteristics of the 3rd embodiment are, are provided with an elastic force buckle element 315 (retaining element) in the supporting construction 510, and buckle element 315 passes reflecting plate 320, and the back side of buckle reflecting plate 320.By setting up buckle element 315, can strengthen the supporting capacity of supporting construction 510.
Because the support column top of supporting construction of the present invention can be moved in a movable range with diffuser plate.Therefore, can avoid support column and diffuser plate friction and the soft flocks and the different sound that cause.Support structure configuration of the present invention again is simple, and is located between the fluorescent tube, therefore, can not influence the thickness of backlight module, and has advantage with low cost.In addition, supporting construction of the present invention provides multidirectional supporting capacity, therefore has preferable support effect.
Though disclosed the present invention in conjunction with above concrete preferred embodiment; yet it is not in order to limit the present invention; anyly be familiar with this operator; without departing from the spirit and scope of the present invention; still can do some and change and retouching, so protection scope of the present invention should be with being as the criterion that claim was defined.
Claims (18)
1. backlight module comprises:
One reflecting plate;
One diffuser plate; And
One supporting construction, be located on this reflecting plate, this supporting construction comprises a support column and a buffer element, the top of the support column of this supporting construction contacts this diffuser plate, and this buffer element is located between this support column and this reflecting plate, wherein, this buffer element is a flexible member, so that this supporting construction provides the anchorage force of at least two directions to this diffuser plate, and this buffer element allows that the top of this support column moves in a movable range.
2. backlight module as claimed in claim 1, wherein, this supporting construction provides one first anchorage force, and this first anchorage force is perpendicular to an exiting surface of this backlight module.
3. backlight module as claimed in claim 1, wherein, this supporting construction provides one second anchorage force, and this second anchorage force is parallel to an exiting surface of this backlight module.
4. backlight module as claimed in claim 1, wherein, this buffer element provides described each anchorage force to this support column.
5. backlight module as claimed in claim 1, wherein, this buffer element is the block flexible member of a homogeneous.
6. backlight module as claimed in claim 1, wherein, the material of this buffer element is to select the group that forms from polyurethane, silicon and rubber.
7. backlight module as claimed in claim 1, wherein, the color of this buffer element is a white or transparent.
8. backlight module as claimed in claim 1, wherein, the material of this support column is plastics.
9. backlight module as claimed in claim 1, wherein, the material of this support column is a transparent rubber.
10. backlight module as claimed in claim 1, wherein, the top of this support column is formed with a rough surface.
11. backlight module as claimed in claim 1, it also comprises an adhesion material, is located between this support column and this diffuser plate.
12. backlight module as claimed in claim 1, wherein, the color of this support column is a white or transparent.
13. backlight module as claimed in claim 1, wherein, this support column is coniform.
14. backlight module as claimed in claim 1, wherein, this supporting construction is to be located on this reflecting plate in the mode of pasting.
15. backlight module as claimed in claim 1, wherein, this supporting construction also comprises a retaining element, is located on this support column, passes this buffer element, and this supporting construction is fixed on this reflecting plate.
16. backlight module as claimed in claim 15, wherein, this retaining element is a bolt.
17. backlight module as claimed in claim 15, wherein, this retaining element is an elastic force buckle element.
18. backlight module as claimed in claim 1, it also comprises at least two fluorescent tubes, is located between this diffuser plate and this reflecting plate, and wherein, this supporting construction is located between this each fluorescent tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100530070A CN100353231C (en) | 2005-03-04 | 2005-03-04 | Back light module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100530070A CN100353231C (en) | 2005-03-04 | 2005-03-04 | Back light module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1648741A CN1648741A (en) | 2005-08-03 |
| CN100353231C true CN100353231C (en) | 2007-12-05 |
Family
ID=34876649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100530070A Active CN100353231C (en) | 2005-03-04 | 2005-03-04 | Back light module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100353231C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100529897C (en) * | 2005-12-07 | 2009-08-19 | 鸿富锦精密工业（深圳）有限公司 | Straight-down back-light module group |
| CN101315485B (en) * | 2007-06-01 | 2010-05-26 | 群康科技(深圳)有限公司 | Back light module unit and LCD device adopting the same |
| TWI369549B (en) | 2008-09-26 | 2012-08-01 | Au Optronics Corp | Backlight module |
| CN102537862A (en) * | 2008-10-21 | 2012-07-04 | 友达光电股份有限公司 | Backlight module |
| CN202012817U (en) * | 2011-03-31 | 2011-10-19 | 深圳市华星光电技术有限公司 | Liquid crystal display device and backlight module thereof |
| CN102278704A (en) * | 2011-08-04 | 2011-12-14 | 南京中电熊猫液晶显示科技有限公司 | Diffusion plate with supporting structure |
| TWI537647B (en) * | 2012-08-31 | 2016-06-11 | 友達光電股份有限公司 | Backlight module and supporting element |
| TWI657293B (en) | 2016-03-29 | 2019-04-21 | 友達光電股份有限公司 | Backlight module |
| CN105938270A (en) * | 2016-05-20 | 2016-09-14 | 青岛海信电器股份有限公司 | Backlight module and liquid crystal display device |
| CN109031744A (en) * | 2018-08-30 | 2018-12-18 | 深圳市华星光电技术有限公司 | Backlight module and the display device for using the backlight module |
| CN110111693A (en) * | 2019-05-08 | 2019-08-09 | 惠州市华星光电技术有限公司 | Backlight module and display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020044437A1 (en) * | 2000-10-14 | 2002-04-18 | Lee Joung Jae | Back light assembly for liquid crystal display device |
| CN1542516A (en) * | 2003-04-30 | 2004-11-03 | 友达光电股份有限公司 | Light source of back light module |
| CN1567059A (en) * | 2003-07-09 | 2005-01-19 | 友达光电股份有限公司 | Backlight module |
-
2005
- 2005-03-04 CN CNB2005100530070A patent/CN100353231C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020044437A1 (en) * | 2000-10-14 | 2002-04-18 | Lee Joung Jae | Back light assembly for liquid crystal display device |
| CN1542516A (en) * | 2003-04-30 | 2004-11-03 | 友达光电股份有限公司 | Light source of back light module |
| CN1567059A (en) * | 2003-07-09 | 2005-01-19 | 友达光电股份有限公司 | Backlight module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1648741A (en) | 2005-08-03 |
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