CN102878492B - Backlight module set and display device thereof - Google Patents
Backlight module set and display device thereof Download PDFInfo
- Publication number
- CN102878492B CN102878492B CN201210351067.0A CN201210351067A CN102878492B CN 102878492 B CN102878492 B CN 102878492B CN 201210351067 A CN201210351067 A CN 201210351067A CN 102878492 B CN102878492 B CN 102878492B
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- Prior art keywords
- light guide
- guide shell
- backlight module
- liquid
- backboard
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Abstract
The invention discloses a backlight module set and a display device thereof, relating to the technical field of displays; material cost is reduced; a light guide shell is manufactured through injection molding technology, thus, the smoothness of a shell and the uniformity of shell thickness are ensured; the backlight module set comprises a back board; the back board comprises a lateral board, a bottom board and a light guide shell; the light guide shell comprises a top board and a lateral wall surrounded by the four sides of the top board; the light guide shell is arranged on the bottom board of the back board; the light guide shell and the bottom part of the back board form a closed containing space; liquid is filled in the containing space; the light guide shell is made of polymethyl methacrylate; the refractive index of the liquid is 1.3-1.55; and the display device disclosed by the invention comprises the backlight module set.
Description
Technical field
The present invention relates to display technology field, particularly relate to a kind of backlight module and display device thereof.
Background technology
Light guide plate is the vitals in display, for the leaded light of backlight.Prior art for using polymethylmethacrylate (Poly Methyl Meth Acrylate, PMMA) material as light guide plate, but, due to PMMA material price costly, thus make cost higher.As shown in Figure 1, prior art also has the light guide plate housing using PMMA material to make hollow, wherein filling liquid, but this needs to use blow molding process to make the light guide plate housing of hollow, and therefore the flatness of housing and the homogeneity of thickness of shell are difficult to ensure card.
Summary of the invention
Embodiments of the invention provide a kind of backlight module and display device thereof, reduce material cost, and, light guide shell can be made by Shooting Technique, thus ensure that the flatness of housing and the homogeneity of thickness of shell.
For solving the problems of the technologies described above, embodiments of the invention adopt following technical scheme:
On the one hand, provide a kind of backlight module, comprise backboard, described backboard comprises side plate and base plate, also comprises:
Light guide shell, described light guide shell comprises the sidewall that top board and described top board surrounding surround;
Described light guide shell is arranged on the base plate of described backboard;
The base plate of described light guide shell and described backboard forms closed accommodation space;
Liquid is full of in described accommodation space;
The material of described light guide shell is polymethylmethacrylate;
The refractive index of described liquid is 1.3 to 1.55.
Further, the cover top surface of described light guide shell is provided with the pit for bright dipping.
Further, the upper surface of described base plate is coated with reflective coating.
Further, the base plate of described backboard is provided with for groove close-fitting with the sidewall of described light guide shell;
The sidewall of described light guide shell is provided with several lower male structure;
Several perforation for making the lower male structure of sidewall pass is provided with in described groove.
Alternatively, described liquid is sucrose water.
Particularly, in described sucrose water, the mass percent of sucrose is 60%.
Alternatively, described liquid is sodium-chloride water solution.
Particularly, in described sodium-chloride water solution, the mass percent of sodium chloride is 25%.
Alternatively, described liquid is glycerine, olive oil or terebinthina.
On the other hand, additionally provide a kind of display device, comprise above-mentioned backlight module.
Backlight module in the embodiment of the present invention and display device thereof, closed accommodation space is connected to form in light guide shell and backboard owing to have employed, in accommodation space, filling liquid replaces traditional light guide plate, and the liquid source that refractive index is about 1.5 enriches, therefore inexpensively, compared with adopting the expensive block PMMA material of reality with light guide plate of the prior art, save cost.Further, light guide shell can be made by Shooting Technique, thus ensure that the flatness of housing and the homogeneity of thickness of shell.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the light conducting plate structure schematic diagram of hollow in prior art;
Fig. 2 is the structural representation of a kind of backlight module in the embodiment of the present invention;
Fig. 3 is the close-up schematic view at the top board A place of light guide shell in Fig. 2;
Fig. 4 is the structural scheme of mechanism of light guide shell in Fig. 2;
Fig. 5 is the base arrangement schematic diagram of Fig. 2 dorsulum;
Fig. 6 be when in Fig. 5, sidewall and base plate closely cooperate BB ' to schematic cross-section;
Fig. 7 be when in Fig. 5, sidewall and base plate closely cooperate CC ' to schematic cross-section.
Description of reference numerals:
1-backboard; 11-base plate; 111-groove; 112-bores a hole; 12-side plate; 2-light guide shell; 21-top board; 211-pit; 22-sidewall; Male structure under 221-; 23-side male structure; 3-liquid; 4-light source; 5-reflective coating.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 2, embodiments provide a kind of backlight module, comprise backboard 1, backboard 1 comprises side plate 12 and base plate 11; Light guide shell 2, light guide shell 2 comprises the sidewall 22 that top board 21 and top board 21 surrounding surround; Light guide shell 2 is arranged on the base plate 11 of backboard 1; Light guide shell 2 forms with the base plate 11 of backboard 1 accommodation space closed; Liquid 3 is full of in accommodation space; The material of light guide shell 2 is polymethylmethacrylate; The refractive index of liquid 3 is 1.3 to 1.55, and light source 4 is arranged on side plate 12.
Particularly, fill transparency liquid 3 to replace traditional light guide plate in light guide shell 2, play guide-lighting effect, the refractive index due to PMMA is about 1.5, therefore selective refraction rate as far as possible close to 1.5 liquid 3, the loss reduction of such light.
Backlight module in the embodiment of the present invention, closed accommodation space is connected to form in light guide shell and backboard owing to have employed, in accommodation space, filling liquid replaces traditional light guide plate, and the liquid source that refractive index is about 1.5 enriches, therefore inexpensively, compared with adopting the expensive block PMMA material of reality with light guide plate of the prior art, save cost.Further, light guide shell can be made by Shooting Technique, thus ensure that the flatness of housing and the homogeneity of thickness of shell.
Further, as shown in Figure 3, top board 21 upper surface of light guide shell 2 is provided with the pit 211 for bright dipping, is equivalent to the site in conventional light guiding plate.Particularly, pit 211 can be injection moulding straight forming, also can be made up of laser.
Further, as shown in Figure 2, the upper surface of base plate 11 is coated with reflective coating 5, is equivalent to the reflector plate below conventional light guiding plate, and reflective coating 5 is at least coated in above-mentioned accommodation space.
Alternatively, liquid 3 is sucrose water.
Particularly, in sucrose water, the mass percent (concentration) of sucrose is 60%.Because in sucrose water, the mass percent of sucrose is higher, its refractive index is also higher, and when the mass percent of sucrose is 60%, its refractive index is 1.44, comparatively close to 1.5.
Alternatively, liquid 3 is sodium-chloride water solution, i.e. saline solution.
Particularly, in sodium-chloride water solution, the mass percent (concentration) of sodium chloride is 25%, and now the refractive index of sodium-chloride water solution is 1.40, comparatively close to 1.5.
Alternatively, liquid 3 for refractive index be 1.47 glycerine, olive oil or terebinthina.
It should be noted that, if liquid 3 is aqueous solution, as sucrose water or saline solution, then reflective coating 5 is hydrophobic material, if liquid 3 is oil, as glycerine, olive oil or terebinthina, then reflective coating 5 is the material of oleophobic property.
The backlight module in the embodiment of the present invention is further illustrated below for being sealed and matched between light guide shell 2 and backboard 1.As shown in Figure 4, the side of light guide shell 2 is provided with side male structure 23, for arranging the filling orifice of liquid outside the viewing area of backboard 1, liquid 3 is injected in light guide shell 2 by above-mentioned filling orifice, again filling orifice is sealed afterwards, sidewall 22 being provided with multiple lower male structure 221, for inserting backboard 1, playing fixation.As shown in Figure 5, the base plate 11 of backboard 1 being provided with for groove 111 close-fitting with the sidewall 22 of light guide shell 2, in groove 111, being provided with several perforation 112 for making the lower male structure 221 of sidewall 22 pass.When light guide shell 2 closely cooperates to form closed accommodation space with backboard 1, as shown in Figure 6, sidewall 22 except lower male structure 221 embeds in the groove 111 of base plate 11, play sealing and location, as shown in Figure 7, the lower male structure 221 of sidewall 22 through perforation 112, and is blocked by base plate 11, and light guide shell 2 is fixed by backboard 1.Preferably, the lower male structure 221 on backboard 1 relative both sides sidewall 22 is symmetrical arranged.
Backlight module in the embodiment of the present invention, closed accommodation space is connected to form in light guide shell and backboard owing to have employed, in accommodation space, filling liquid replaces traditional light guide plate, and the liquid source that refractive index is about 1.5 enriches, such as sucrose water, saline solution, glycerine, olive oil or terebinthina, therefore inexpensively, compared with adopting the expensive block PMMA material of reality with light guide plate of the prior art, cost has been saved.Further, light guide shell can be made by Shooting Technique, thus ensure that the flatness of housing and the homogeneity of thickness of shell.
On the other hand, the embodiment of the present invention additionally provides a kind of display device, comprises above-mentioned backlight module.The concrete structure of backlight module is same as the previously described embodiments, does not repeat them here.
Display device in the embodiment of the present invention, owing to have employed light guide shell in backlight module and backboard is connected to form closed accommodation space, in accommodation space, filling liquid replaces traditional light guide plate, and the liquid source that refractive index is about 1.5 enriches, such as sucrose water, saline solution, glycerine, olive oil or terebinthina, therefore inexpensively, compared with adopting the expensive block PMMA material of reality with light guide plate of the prior art, cost has been saved.Further, light guide shell can be made by Shooting Technique, thus ensure that the flatness of housing and the homogeneity of thickness of shell.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (9)
1. a backlight module, comprises backboard, and described backboard comprises side plate and base plate, it is characterized in that, also comprises:
Light guide shell, described light guide shell comprises the sidewall that top board and described top board surrounding surround;
Described light guide shell is arranged on the base plate of described backboard;
The base plate of described light guide shell and described backboard forms closed accommodation space;
Liquid is full of in described accommodation space;
The material of described light guide shell is polymethylmethacrylate;
The refractive index of described liquid is 1.3 to 1.55;
Wherein, the base plate of described backboard is provided with for groove close-fitting with the sidewall of described light guide shell;
The sidewall of described light guide shell is provided with several lower male structure;
Several perforation for making the lower male structure of sidewall pass is provided with in described groove.
2. backlight module according to claim 1, is characterized in that,
The cover top surface of described light guide shell is provided with the pit for bright dipping.
3. backlight module according to claim 2, is characterized in that,
The upper surface of described base plate is coated with reflective coating.
4., according to the backlight module in claim 1-3 described in any one, it is characterized in that,
Described liquid is sucrose water.
5. backlight module according to claim 4, is characterized in that,
In described sucrose water, the mass percent of sucrose is 60%.
6., according to the backlight module in claim 1-3 described in any one, it is characterized in that,
Described liquid is sodium-chloride water solution.
7. backlight module according to claim 6, is characterized in that,
In described sodium-chloride water solution, the mass percent of sodium chloride is 25%.
8., according to the backlight module in claim 1-3 described in any one, it is characterized in that,
Described liquid is glycerine, olive oil or terebinthina.
9. a display device, is characterized in that, comprises backlight module as claimed in any of claims 1 to 8 in one of claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210351067.0A CN102878492B (en) | 2012-09-19 | 2012-09-19 | Backlight module set and display device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210351067.0A CN102878492B (en) | 2012-09-19 | 2012-09-19 | Backlight module set and display device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102878492A CN102878492A (en) | 2013-01-16 |
| CN102878492B true CN102878492B (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210351067.0A Expired - Fee Related CN102878492B (en) | 2012-09-19 | 2012-09-19 | Backlight module set and display device thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105607179A (en) * | 2016-01-27 | 2016-05-25 | 青岛海信电器股份有限公司 | Display apparatus |
| CN105929513B (en) * | 2016-07-14 | 2019-02-22 | 京东方科技集团股份有限公司 | A kind of leaded light optical cable, automated optical inspection |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201251634Y (en) * | 2008-09-11 | 2009-06-03 | 扬昕精密股份有限公司 | Light guide plate used for backlight module |
| CN102352981A (en) * | 2011-03-02 | 2012-02-15 | 友达光电股份有限公司 | Backlight module |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19708295A1 (en) * | 1997-02-28 | 1998-09-10 | Nath Guenther | Liquid light guide |
| JP2001337623A (en) * | 2000-05-30 | 2001-12-07 | Minolta Co Ltd | Light unit, light guiding board, light guide and display unit using this light guide |
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2012
- 2012-09-19 CN CN201210351067.0A patent/CN102878492B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201251634Y (en) * | 2008-09-11 | 2009-06-03 | 扬昕精密股份有限公司 | Light guide plate used for backlight module |
| CN102352981A (en) * | 2011-03-02 | 2012-02-15 | 友达光电股份有限公司 | Backlight module |
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| CN102878492A (en) | 2013-01-16 |
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