CN101493603A - Back frame apparatus of backlight module - Google Patents
Back frame apparatus of backlight module Download PDFInfo
- Publication number
- CN101493603A CN101493603A CNA2008100043514A CN200810004351A CN101493603A CN 101493603 A CN101493603 A CN 101493603A CN A2008100043514 A CNA2008100043514 A CN A2008100043514A CN 200810004351 A CN200810004351 A CN 200810004351A CN 101493603 A CN101493603 A CN 101493603A
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- China
- Prior art keywords
- back frame
- supporting rib
- frame apparatus
- backlight module
- diapire
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Abstract
The invention provides a back frame device of a backlight module, which is used for assembling an optical film and a luminescence component, wherein, the back frame device comprises a back frame and a supporting rib, wherein, the back frame comprises a bottom wall and a surrounding wall which extends upwards from the circumference of the bottom wall and is contacted with the optical film; the supporting rib is arranged on the upper surface of the bottom wall in an extending way; furthermore, the supporting rib defines the upper surface of the bottom wall so as to form a receiving space where the luminescence component is arranged, and is provided with a reflection surface which faces to the optical film; and the reflection surface is used for reflecting at least part of the light beam emitted by the luminescence component to the optical film.
Description
Technical field
The present invention relates to a kind of back frame apparatus of backlight module, refer to a kind of back frame apparatus especially in order to the support of optical diaphragm.
Background technology
Known LCD is to provide its required planar light with backlight module (backlight module).
In the backlight module in order to the luminescence component of light to be provided, can be light emitting diode (LED, lightemitting diode) point source of light, cathode fluorescent tube (CCFL such as, cold cathode fluorescentlamp) linear light source such as, or the flat light source of flat florescent lamp (FFL, flat fluorescent lamp) etc.
No matter adopt which kind of light source as luminescence component, backlight module can be provided with light diffusing sheet (diffuser plate) with the specific range compartment of terrain usually above luminescence component, so as to the light that light source sent is carried out homogenising.
Yet, because the known backlit module only is fixed in back of the body frame with light diffusing sheet with its periphery, when backlight module when large scale develops, cause inner light diffusing sheet size to become big thereupon, after causing the long-time gravitate of this light diffusing sheet, the light diffusing sheet centre is easy to generate to recessed bent distortion, thereby influences the luminous homogeneity of whole backlight module, even influences the device intensity of backlight module.
Summary of the invention
In view of this, purpose of the present invention is to provide a kind of back frame apparatus of backlight module, can make blooming piece and luminescence component keep suitably distance at interval, and can keep the luminous uniformity coefficient of backlight module.
For reaching above-mentioned purpose, the invention provides a kind of back frame apparatus of backlight module, in order to install one or more blooming piece and two or more luminescence component, this back frame apparatus comprises back of the body frame, and supporting rib, wherein this back of the body frame comprise diapire and by this diapire periphery extend upward the contact this blooming piece surrounding wall, and this supporting rib extends setting along this bottom wall upper surface, and this supporting rib defines this bottom wall upper surface and forms the accommodation space that is provided with for these luminescence components, this supporting rib has the reflecting surface towards this blooming piece in addition, and this reflecting surface is in order to reflex to this blooming piece at least in part with this luminescence component issued light line.
As shown from the above technical solution, back frame apparatus of the present invention is by means of on the diapire of the back of the body frame supporting rib being set, can effectively support this blooming piece, to prevent that the blooming piece centre from producing excessive concave deformation, and can be with luminescence component issued light line towards blooming piece reflection and/or refraction, to avoid influencing the luminous uniformity coefficient of backlight module.
Description of drawings
The three-dimensional exploded view that Fig. 1 is provided with along short-axis direction for supporting rib among back frame apparatus first embodiment among the present invention;
Fig. 2 is the cross-sectional schematic of back frame apparatus shown in Fig. 1, light reflection and the refraction situation that adopts transparent solid supporting rib shown in this figure;
The three-dimensional exploded view that Fig. 3 is provided with along long axis direction for supporting rib among back frame apparatus first embodiment among the present invention;
Fig. 4 is the cross-sectional schematic of back frame apparatus shown in Fig. 1, the light reflection case that adopts opaque hollow body supporting rib shown in this figure;
Fig. 5 is the cross-sectional schematic of back frame apparatus second embodiment among the present invention, and this there is shown supporting rib and blooming piece contacting structure;
Fig. 6 is the three-dimensional exploded view of back frame apparatus the 3rd embodiment among the present invention;
Fig. 7 is the cross-sectional schematic of back frame apparatus the 4th embodiment among the present invention;
Fig. 8 is the cross-sectional schematic of back frame apparatus the 5th embodiment among the present invention.
Description of reference numerals
10 back of the body frames, 21 supporting ribs
211 reflectings surface, 212 apical margins
22 supporting ribs, 23 accommodation spaces
30 luminescence components, 40 blooming pieces
50 reflecting plates, 60 circuit boards
12 surrounding walls, 11 diapires
31 cathode fluorescent tubes, 32 light emitting diodes
Embodiment
Relevant technology contents of the present invention and detailed description, conjunction with figs. is described as follows:
First embodiment:
Consult Fig. 1 and Fig. 2, the back frame apparatus in the present embodiment is used to install one or more blooming piece 40 and two or more luminescence component 30 of backlight module, and this back frame apparatus comprises back of the body frame 10, and supporting rib 21; Wherein, this back of the body frame 10 comprises rectangular bottom wall 11, and the surrounding wall 12 that extends upward this blooming piece 40 of contact by these diapire 11 peripheries, in the present embodiment, this supporting rib 21 extends setting along the short-axis direction of diapire 11 upper surfaces, during actual enforcement, as shown in Figure 3, this supporting rib 21 also can extend along the long axis direction of these diapire 11 upper surfaces, and these supporting rib 21 quantity are not limited to one, and visual actual demand is adjusted; And this supporting rib 21 defines these diapire 11 upper surfaces and forms two accommodation spaces 23 that supply these luminescence components 30 to be provided with separately and respectively.
In addition, this supporting rib 21 is transparent solid, by polyacrylic resin, polycarbonate, polyvinyl resin, or polyester material such as polymethyl methacrylate is made, this supporting rib 21 has a reflecting surface 211 that faces this blooming piece 40, the section profile of this reflecting surface 211 is inverted v-shaped, and this inverted v-shaped section profile has slick and sly shape apical margin 212, this supporting rib 21 can borrow this reflection 211 that these luminescence component 30 issued light lines are partly reflexed to this blooming piece 40, and the light that another part refraction can be entered in the supporting rib 21 reflects towards the direction of this blooming piece 40 again.
In addition, consult Fig. 4, supporting rib 21 also can be opaque hollow body, and it can utilize opaque polyester, is processed into as the thin plate of polyethylene terephthalate materials such as (PET).The reflecting surface 211 of this supporting rib 21 can reflex to this blooming piece 40 fully fully with these luminescence component 30 issued light lines, and in the present embodiment, this blooming piece 40 is a light diffusing sheet, during actual enforcement not as limit.
Consult Fig. 2 and Fig. 4, have the gap between the apical margin 212 of this supporting rib 21 and this blooming piece 40, in other words, the supporting rib 21 of virgin state does not contact with blooming piece 40, but at blooming piece 40 after use after a while, take place recessed a little and contact during apical margin 212, borrow the supporting rib 21 that is arranged on the diapire 11 as preventing blooming piece 40 further recessed supports.And, when blooming piece 40 is recessed, because supporting rib 21 is only with its apical margin 212 support of optical diaphragms 40, so the contact area of supporting rib 21 and blooming piece 40 is reduced to minimum, and, supporting rib 21 more reflects light and/or refraction towards blooming piece 40 with its reflecting surface 211, makes backlight module at the unlikely generation blanking bar in supporting rib 21 placements, to avoid influencing the luminous uniformity coefficient of backlight module.
In the present embodiment, respectively this luminescence component 30 is an example with the flat florescent lamp that is arranged on this diapire 11.
Second embodiment:
Consult Fig. 5, structure basically identical in structure in the second embodiment of the invention and the above-mentioned enforcement one, its difference is that the supporting rib 21 in the present embodiment directly contacts support of optical diaphragm 40 with its apical margin 212, identical during all the other structures and first are implemented described no longer separately at this.
The 3rd embodiment:
Consult Fig. 6, the back frame apparatus of the 3rd preferred embodiment of the present invention, roughly identical with first preferred embodiment, difference is, this back frame apparatus also comprises the supporting rib 22 that extends along the long axis direction of diapire 11 upper surfaces, and supporting rib 21 intersections that this supporting rib 22 and short-axis direction along diapire 11 upper surfaces extend are in the center of diapire 11; In addition, the quantity of this supporting rib 22 also is not limited to one, and its quantity is adjusted in visual actual demand, and these supporting ribs 21,22 define these diapire 11 upper surfaces and form four accommodation spaces 23 that supply four luminescence components 30 to be provided with separately and respectively.
The 4th embodiment:
Consult Fig. 7, the back frame apparatus of the 4th preferred embodiment of the present invention, roughly identical with first preferred embodiment, difference is, the luminescence component 30 of present embodiment comprises most cathode fluorescent tubes 31, and present embodiment also is arranged on reflecting plate 50 between diapire 11 and the supporting rib 21, in order to the upwards reflection of light with cathode fluorescent tube 31 emission downwards.
The 5th embodiment:
Consult Fig. 8, the backlight module of the 5th preferred embodiment of the present invention, roughly identical with first preferred embodiment, difference is, present embodiment also is arranged on circuit board 60 between diapire 11 and the supporting rib 21, and the luminescence component 30 of present embodiment comprises most the light emitting diodes 32 that are arranged on this circuit board 60.
In sum, back frame apparatus of the present invention is by means of on the diapire 11 of back of the body frame 10 these supporting ribs 21,22 being set, can effectively support this blooming piece 40, to prevent that blooming piece 40 centre from producing excessive concave deformation, and can be with luminescence component 30 issued light lines towards blooming piece 40 reflections and/or refraction, to avoid influencing the luminous uniformity coefficient of backlight module.
The above only is preferred embodiment of the present invention, does not therefore limit protection scope of the present invention.
Claims (11)
1, a kind of back frame apparatus of backlight module, described back frame apparatus is characterized in that in order to install one or more blooming piece and two or more luminescence component this back frame apparatus comprises:
Back of the body frame comprises diapire, and is extended upward the surrounding wall of this blooming piece of contact by this diapire periphery; And
Supporting rib, this supporting rib extends setting along this bottom wall upper surface, and this supporting rib defines this bottom wall upper surface and forms the accommodation space that is provided with for these luminescence components, and this supporting rib has towards this blooming piece in order to this luminescence component issued light line is reflexed at least in part the reflecting surface of this blooming piece in addition.
2, the back frame apparatus of backlight module as claimed in claim 1 is characterized in that, described diapire is rectangular, and this supporting rib is the short-axis direction extension along this diapire.
3, the back frame apparatus of backlight module as claimed in claim 1 is characterized in that, described diapire is rectangular, and this supporting rib is the long axis direction extension along this diapire.
4, the back frame apparatus of backlight module as claimed in claim 2 is characterized in that, described back frame apparatus also comprises the supporting rib that extends along the long axis direction of this diapire.
5, the back frame apparatus of backlight module as claimed in claim 4 is characterized in that, the supporting rib intersection that the supporting rib that described short-axis direction along this diapire extends and long axis direction along this diapire extend is in this diapire center.
6, the back frame apparatus of backlight module as claimed in claim 2 is characterized in that, the section profile of the reflecting surface of described supporting rib is inverted v-shaped.
7, the back frame apparatus of backlight module as claimed in claim 6 is characterized in that, described inverted v-shaped section profile has slick and sly shape apical margin.
8, the back frame apparatus of backlight module as claimed in claim 7 is characterized in that, described supporting rib is transparent solid.
9, the back frame apparatus of backlight module as claimed in claim 7 is characterized in that, described supporting rib is opaque hollow body.
10, the back frame apparatus of backlight module as claimed in claim 1 is characterized in that, has the gap between described supporting rib and this blooming piece.
11, the back frame apparatus of backlight module as claimed in claim 1 is characterized in that, described supporting rib supports this blooming piece contiguously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100043514A CN101493603A (en) | 2008-01-22 | 2008-01-22 | Back frame apparatus of backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100043514A CN101493603A (en) | 2008-01-22 | 2008-01-22 | Back frame apparatus of backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101493603A true CN101493603A (en) | 2009-07-29 |
Family
ID=40924264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100043514A Pending CN101493603A (en) | 2008-01-22 | 2008-01-22 | Back frame apparatus of backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101493603A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913825A (en) * | 2012-11-02 | 2013-02-06 | 京东方科技集团股份有限公司 | Illumination unit, backlight module and display device |
| CN107429896A (en) * | 2015-02-20 | 2017-12-01 | 邓肯多夫德国纺织及纤维研究所 | Flexible surface light source, particularly for use in clothing |
-
2008
- 2008-01-22 CN CNA2008100043514A patent/CN101493603A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913825A (en) * | 2012-11-02 | 2013-02-06 | 京东方科技集团股份有限公司 | Illumination unit, backlight module and display device |
| CN102913825B (en) * | 2012-11-02 | 2015-07-01 | 京东方科技集团股份有限公司 | Illumination unit, backlight module and display device |
| US10302856B2 (en) | 2012-11-02 | 2019-05-28 | Boe Technology Group Co., Ltd. | Light-emitting unit, backlight module and display device |
| CN107429896A (en) * | 2015-02-20 | 2017-12-01 | 邓肯多夫德国纺织及纤维研究所 | Flexible surface light source, particularly for use in clothing |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20090729 |