CN1591126A - Back-to-light module - Google Patents
Back-to-light module Download PDFInfo
- Publication number
- CN1591126A CN1591126A CN 03155607 CN03155607A CN1591126A CN 1591126 A CN1591126 A CN 1591126A CN 03155607 CN03155607 CN 03155607 CN 03155607 A CN03155607 A CN 03155607A CN 1591126 A CN1591126 A CN 1591126A
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- China
- Prior art keywords
- backlight module
- type backlight
- direct type
- diffuser plate
- printing opacity
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Abstract
The present invention relates to a downward-vertical type backlight moudle. It includes a scattering plate, a reflecting plate, several light sources and at least one transmission supporting frame placed betwwen the scattering plate and reflecting plate. The reflecting plate is connected on the scattering plate to form a cavity, and the light source is placed in the described cavity, the utilization of the above-mentioned transmission supporting frame can prevent the scattering plate from producing curved deformation.
Description
Technical field
The present invention relates to a kind of direct type backlight module, particularly relate to a kind of diffuser plate that supports, to solve the direct type backlight module that diffuser plate is out of shape and produces buckling deformation because of insufficient rigidity of material because of the heat of illuminating lamp tube generation.
Background technology
See also Fig. 1, existing direct type backlight module 1 (Jap.P. 5-119703 number) is below the illuminating lamp tube 14 of direct type backlight module 1 support column 13 to be set, to avoid illuminating lamp tube 14 distortion.Yet, the shortcoming of this direct type backlight module 1 is, when the size of display panels (LCD) (not shown) is big more, it is big that the size of its diffuser plate 11 also can relatively become, and the heat energy that causes diffuser plate 11 to be sent because of fluorescent tube 14, produce the buckling deformation phenomenon, and then influence the optical characteristics of whole direct type backlight module 1.
Therefore, see also Fig. 2, in order to support diffuser plate 11, another kind of existing direct type backlight module 1 can be provided with several support columns 23 between reflecting plate 12 and diffuser plate 11, to avoid diffuser plate 11 after buckling deformation, make the optical characteristics variation of direct type backlight module 1, even break illuminating lamp tube 14.Yet often along with the LCD size is increasing, support column 23 numbers also need to increase, and therefore in support column 23 parts, tend to cause dark line because of the energy effective light transmission, and have reduced the equally distributed performance of LCD panel 25 whole light.
Summary of the invention
The object of the present invention is to provide a kind of direct type backlight module, utilize the back up pad of a light transmission to prevent that the diffuser plate of direct type backlight module from producing bending.
For reaching above-mentioned purpose, the invention provides a kind of direct type backlight module, comprise a diffuser plate, a reflecting plate, a plurality of light source and at least one printing opacity bracing frame.Reflecting plate is connected with diffuser plate, and forms a cavity between this diffuser plate and this reflecting plate, and light source and printing opacity bracing frame then are arranged in the above-mentioned cavity, and the printing opacity bracing frame is resisted against between diffuser plate and the reflecting plate.
According to the present invention, utilize the extra support power of printing opacity bracing frame as diffuser plate, prevent that diffuser plate from enlarging and flexural deformation simultaneously, utilizes the printing opacity bracing frame, and various external form and arrangement mode, thereby can not influence the optical appearance of direct type backlight module.
Description of drawings
Fig. 1 is the diagrammatic cross-section of existing direct type backlight module;
Fig. 2 is the side schematic view of existing another kind of direct type backlight module;
Fig. 3 is the first embodiment cut-open view of direct type backlight module of the present invention;
Fig. 4 a～Fig. 4 c is the top view of first type of printing opacity bracing frame among the present invention;
Fig. 5 a～Fig. 5 b is the top view of second type of printing opacity bracing frame among the present invention;
Fig. 6 a～Fig. 6 b is the direct type backlight module second embodiment top view of the present invention;
Fig. 7 a～Fig. 7 b is direct type backlight module the 3rd an embodiment top view of the present invention.
Embodiment
Fig. 3 is the first embodiment cut-open view of direct type backlight module of the present invention.In this embodiment, direct type backlight module 3 connects with a diffuser plate 31 and a reflecting plate 32, forms a cavity 35 between diffuser plate 31 and reflecting plate 32, is provided with a plurality of light sources 34 in cavity 35, and in this embodiment, light source 34 can be fluorescent tube.For the cause of avoiding the heating of the excessive or fluorescent tube of diffuser plate 31 areas produces distortion, be arranged between diffuser plate 31 and the reflecting plate 32 as contact with a printing opacity bracing frame 33, prevent diffuser plate 31 distortion.
In this embodiment, printing opacity bracing frame 33 can be the integrated formed structure that forms with injection molding forming method, and it has a plurality of feet 331 common back up pads 332 that connect.Flat back up pad 332 has the fixedly function of diffuser plate 31 shapes, and the setting of feet 331 can be complied with astigmatic demand, be arranged between the light source 34, with provide support plate 332 and on diffuser plate 31 anchorage forces, and the transparent material of printing opacity bracing frame 33 integral body also can lower the influence that increases by 33 pairs of optical appearance of printing opacity bracing frame; In addition, if improve the optics uniformity coefficient, can or be coated with photodiffusion material at printing opacity bracing frame 33 inner doping photodiffusion materials in printing opacity bracing frame 33 surfaces.
In addition, also can more increase by first diffusion sheet 36, prismatic lens 37 and second diffusion sheet 38 on diffuser plate 31, make astigmatism evenly; Wherein, first diffusion sheet 36 is to be arranged on the diffuser plate 31.Prismatic lens 37 is to be arranged on first diffusion sheet 36.Second diffusion sheet 38 is to be arranged on the prismatic lens 37, wherein, and the visual actual optical demands of quantity that prismatic lens and diffusion sheet are set and order and being adjusted.
Fig. 4 a～Fig. 4 c shows the top view of first type of printing opacity bracing frame among the present invention.The printing opacity bracing frame 41 that Fig. 4 a～Fig. 4 c shows, 42 and 43 back up pad 412,422,432 are respectively rectangle, circle and polygon, it is a complete plate body, feet 411,421,431 are distributed in back up pad 412 respectively, 422,432 belows, it is designed that the form fit of its back up pad supports diffuser plate, can reduce printing opacity bracing frame area, reach the effect that supports diffuser plate, wherein the feet number also can need increase and decrease according to the backlight module design, for example, printing opacity bracing frame 42 with circular base slab 422, shown in Fig. 4 b, also feet 421 numbers can be reduced to the center that single feet is arranged at circular base slab 422.
Fig. 5 a～Fig. 5 b shows the top view of second type of printing opacity bracing frame among the present invention.Printing opacity bracing frame 51 that Fig. 5 a～Fig. 5 b shows and 52 back up pad 512 and 522 are respectively rectangle and circular hollow frame, feet 511,521 are distributed in back up pad 512 respectively, 522 belows, it is designed that the form fit of its back up pad supports diffuser plate, because the design of its hollow, not only can reduce printing opacity bracing frame area significantly, reduce whole direct type backlight module weight, reach the effect that supports diffuser plate simultaneously, and the more feasible most light of the reduction of back up pad area can directly not enter diffuser plate via back up pad, so that the astigmatism of direct type backlight module is more even.
In the present invention, the printing opacity bracing frame is not defined as integrated form yet, can be with the formed combined type printing opacity of a plurality of support units bracing frame yet, is the direct type backlight module second embodiment top view of the present invention as Fig. 6 a～Fig. 6 b.Among Fig. 6 a, the printing opacity bracing frame 60 that direct type backlight module 6 uses is by 61 combinations of two support units, each support unit 61 forms by feet 611 and back up pad 612, and feet 611 contacts with reflecting plate (being sign among the figure), back up pad 612 contacts with diffuser plate 62, wherein support unit 61 is arranged, to support the diffuser plate on it; Fig. 6 b uses more small-sized support unit 63 to be arranged; The more small-sized support unit formation printing opacity bracing frame of above-mentioned use can not only support diffuser plate and prevent distortion, its more small-sized volume also is convenient to the storage of material and is transported simultaneously, and small-sized support unit helps changing with direct type backlight module mating surface board size, reduces the material warehouse cost.
In the present invention, the printing opacity bracing frame does not limit its integrated kenel yet, can be with a plurality of the formed combined type printing opacity of the support unit bracing frames that size is different yet, is direct type backlight module the 3rd embodiment top view of the present invention as Fig. 7 a～Fig. 7 b.Among Fig. 7 a, the printing opacity bracing frame 70 that direct type backlight module 7 uses is for being the concentric circles radial arrangement by 71 combinations of two support units, each support unit 71 forms by the back up pad 712 of feet 711 and hollow frame, and feet 711 contacts with reflecting plate (being sign among the figure), back up pad 712 contacts with diffuser plate 72, wherein support unit 71 is the concentric circles radial arrangement, to support the diffuser plate on it; Fig. 7 b uses the support unit 73 of rectangle also to be concentric radial arrangement; The difform support unit formation of above-mentioned use printing opacity bracing frame can not only support diffuser plate and prevent distortion, and because the design of its hollow, not only can reduce printing opacity bracing frame area significantly, reduce whole direct type backlight module weight, reach the effect that supports diffuser plate simultaneously, and the more feasible most light of the reduction of back up pad area can directly not enter diffuser plate via back up pad, so that the astigmatism of direct type backlight module is more even.
According to the present invention, utilize the extra support of printing opacity bracing frame as diffuser plate, prevent that diffuser plate from enlarging and flexural deformation simultaneously, utilizes printing opacity bracing frame and various external form and arrangement mode, thereby can not influence the optical appearance of direct type backlight module.
Though disclosed the present invention in conjunction with above preferred embodiment; yet it is not in order to limit the present invention; any skilled personnel 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 without departing from the spirit and scope of the invention.
Claims (17)
1. direct type backlight module comprises:
One diffuser plate;
One reflecting plate connects this diffuser plate, and forms a cavity between this diffuser plate and this reflecting plate;
A plurality of light sources are arranged in this cavity; And
At least one printing opacity bracing frame is arranged in this cavity, is used for replacing this diffuser plate and this reflecting plate.
2. direct type backlight module as claimed in claim 1, wherein this printing opacity bracing frame has a feet and a back up pad is connected to each other, and is arranged between this diffuser plate and this reflecting plate.
3. direct type backlight module as claimed in claim 2, wherein this back up pad contacts with this diffuser plate, and this feet contacts with this reflecting plate.
4. direct type backlight module as claimed in claim 2, wherein this back up pad and this feet structure that is formed in one.
5. direct type backlight module as claimed in claim 4, wherein this printing opacity bracing frame is made with injection molding.
6. direct type backlight module as claimed in claim 1, wherein this back up pad is a hollow frame.
7. direct type backlight module as claimed in claim 1, wherein this each light source is a fluorescent tube.
8. direct type backlight module as claimed in claim 1, wherein this printing opacity bracing frame is formed with a plurality of support unit.
9. direct type backlight module as claimed in claim 8, wherein this each support unit with arranged in this cavity.
10. direct type backlight module as claimed in claim 8, wherein this each support unit is arranged in this cavity in the concentric circles mode.
11. direct type backlight module as claimed in claim 8, wherein this each support unit has a back up pad and respectively and supports sole and be connected to each other, and is arranged between this diffuser plate and this reflecting plate.
12. direct type backlight module as claimed in claim 11, wherein this back up pad contacts with this diffuser plate, and this feet contacts with this reflecting plate.
13. direct type backlight module as claimed in claim 11, wherein this back up pad and this feet structure that is formed in one.
14. direct type backlight module as claimed in claim 13, wherein this printing opacity bracing frame is made with injection molding.
15. direct type backlight module as claimed in claim 8, wherein this each support unit is a hollow frame.
16. direct type backlight module as claimed in claim 1, wherein in the material of this printing opacity bracing frame, the doping photodiffusion material is to help the light diffusion.
17. direct type backlight module as claimed in claim 1, wherein on this printing opacity bracing frame, the coating photodiffusion material is to help the light diffusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031556078A CN100373232C (en) | 2003-08-29 | 2003-08-29 | Back-to-light module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031556078A CN100373232C (en) | 2003-08-29 | 2003-08-29 | Back-to-light module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1591126A true CN1591126A (en) | 2005-03-09 |
| CN100373232C CN100373232C (en) | 2008-03-05 |
Family
ID=34598168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031556078A Expired - Lifetime CN100373232C (en) | 2003-08-29 | 2003-08-29 | Back-to-light module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100373232C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465734C (en) * | 2006-01-24 | 2009-03-04 | 中华映管股份有限公司 | Diffusing board structure of back lighting module |
| CN101583825B (en) * | 2007-01-19 | 2012-01-04 | 夏普株式会社 | Backlight unit and liquid crystal display |
| CN103939849A (en) * | 2013-01-23 | 2014-07-23 | Lg电子株式会社 | Apparatus for planar lighting |
| CN105676533A (en) * | 2016-03-30 | 2016-06-15 | 合肥惠科金扬科技有限公司 | Double-sided light-emitting backlight module and display device |
| CN112241087A (en) * | 2019-07-19 | 2021-01-19 | 船井电机株式会社 | Illumination device and display device |
| CN115061310A (en) * | 2022-06-20 | 2022-09-16 | Tcl华星光电技术有限公司 | Backlight module and preparation method thereof |
| WO2024050937A1 (en) * | 2022-09-06 | 2024-03-14 | 瑞仪(广州)光电子器件有限公司 | Direct type backlight module having diffusion plate supporting function and display |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5607764A (en) * | 1994-10-27 | 1997-03-04 | Fuji Photo Film Co., Ltd. | Optical diffuser |
| JP2001252540A (en) * | 2000-03-10 | 2001-09-18 | Toray Ind Inc | Reverse osmosis composite membrane |
| KR100640987B1 (en) * | 2000-10-14 | 2006-11-02 | 엘지.필립스 엘시디 주식회사 | backlight assembly of liquid crystal display module |
| CN2461063Y (en) * | 2000-11-24 | 2001-11-21 | 神基科技股份有限公司 | key with back light |
| JP3803554B2 (en) * | 2001-02-16 | 2006-08-02 | 株式会社日立製作所 | Liquid crystal display |
-
2003
- 2003-08-29 CN CNB031556078A patent/CN100373232C/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465734C (en) * | 2006-01-24 | 2009-03-04 | 中华映管股份有限公司 | Diffusing board structure of back lighting module |
| CN101583825B (en) * | 2007-01-19 | 2012-01-04 | 夏普株式会社 | Backlight unit and liquid crystal display |
| US8228458B2 (en) | 2007-01-19 | 2012-07-24 | Sharp Kabushiki Kaisha | Backlight unit and liquid crystal display |
| CN103939849A (en) * | 2013-01-23 | 2014-07-23 | Lg电子株式会社 | Apparatus for planar lighting |
| CN103939849B (en) * | 2013-01-23 | 2017-04-12 | Lg电子株式会社 | Apparatus for planar lighting |
| CN105676533A (en) * | 2016-03-30 | 2016-06-15 | 合肥惠科金扬科技有限公司 | Double-sided light-emitting backlight module and display device |
| CN112241087A (en) * | 2019-07-19 | 2021-01-19 | 船井电机株式会社 | Illumination device and display device |
| CN112241087B (en) * | 2019-07-19 | 2023-08-11 | 船井电机株式会社 | Lighting device and display device |
| CN115061310A (en) * | 2022-06-20 | 2022-09-16 | Tcl华星光电技术有限公司 | Backlight module and preparation method thereof |
| WO2024050937A1 (en) * | 2022-09-06 | 2024-03-14 | 瑞仪(广州)光电子器件有限公司 | Direct type backlight module having diffusion plate supporting function and display |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100373232C (en) | 2008-03-05 |
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Granted publication date: 20080305 |
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| CX01 | Expiry of patent term |