CN100403118C - Backlight module structure - Google Patents
Backlight module structure Download PDFInfo
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- CN100403118C CN100403118C CNB2005100977332A CN200510097733A CN100403118C CN 100403118 C CN100403118 C CN 100403118C CN B2005100977332 A CNB2005100977332 A CN B2005100977332A CN 200510097733 A CN200510097733 A CN 200510097733A CN 100403118 C CN100403118 C CN 100403118C
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- glue frame
- shading film
- light
- guide plate
- light guide
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Abstract
The present invention mainly discloses a backlight module structure which comprises a glue frame and a light conducting plate which are integrally formed, wherein a glue inlet point of the light conducting plate, a light shading film and a reflecting plate are arranged at one side edge of the glue frame. A backlight module uses the light shading film or the extending part of the reflecting plate to cover the glue inlet point, which causes light rays not to leak from the glue inlet point of the light conducting plate to generate a dark area; thus, the problem of light leakage is solved.
Description
Technical field
The present invention relates to a kind of backlight module, particularly relate to a kind of backlight module that solves the light leak problem of integrated glue frame and light guide plate.
Background technology
Flourish along with opto-electronics, liquid crystal display device module (liquid crystal display; LCD) various mobile computers (notebook), personal digital assistant (personaldigital assistant have been applied in widely; PDA) and in the mobile phone electronic installations such as (cell phone).Yet LCD is a kind of non-self luminous flat-panel screens, and it needs outer backlight that adds or sidelight source to throw light on.Therefore, all can be in LCD by a backlight module as its light source, the illumination by this backlight module high brightness and high uniformity makes LCD can demonstrate the picture of high image quality efficiently.
With reference to Figure 1A, it is the three-dimensional exploded view of traditional LCD.Shown in Figure 1A, this LCD 100 comprises a housing (bezel) 102, display panels (LCD panel) 108, driving circuit (driver circuit) 109 and backlight module 120.With reference to Figure 1B, it is the cut-open view of LCD 100, by wherein learning, backlight module 120 is by glue frame (frame) 104, most layer blooming 110, light source 112, light guide plate (light guide plate) 114, shading rubber belt (shieldingsheet) 106, reflecting plate (reflecting sheet) 116 and lamp socket (lamp holder) 118.Glue frame 104 comprises a glue frame body 104a and an accommodation chamber 105, with these accommodation chamber 105 ccontaining reflecting plates 116, light guide plate 114, light source 112, blooming 110 and be combined into backlight module 120.And reflecting plate 116, light guide plate 114 and blooming 110 are to be stacked over from bottom to top in the accommodation chamber 105, and in the gap of 110 of light guide plate 114 and glue frame 104 and bloomings by a shading rubber belt 106 coverings avoiding light leak, and light source 112 is arranged in the lamp socket 118 and be positioned over a side of accommodation chambers 105 in the glue frame 104.Moreover liquid crystal panel 108 is arranged on the backlight module 120, and fixing with a housing 102.
Yet, shown in Fig. 2 B, with formed integrated glue frame 104 of this extra quality injection moulding mode and light guide plate 114, advance glue point 134 because need a light guide plate, and this light guide plate is advanced glue point 134 and can not be coated by glue frame 104, and therefore the light guide plate that forms a recess at glue frame 104 is advanced glue point 134.Therefore, when this light guide plate of light directive is advanced glue and put 134,, 134 scatter and disappear, cause effectively to use light, and when LCD operate, the shadow generation is arranged herein and cause part light to cave in thus because there is not the glue frame can stop light herein.This shadow will cause the bright inequality of the picture of LCD and image quality not good.
Therefore, as solving, impel LCD to have effective light service efficiency, high brightness and high uniformity because of using the integrated glue frame that extra quality injection moulding mode makes and the light leak problem of light guide plate.
Summary of the invention
Because above-mentioned background, the object of the present invention is to provide a kind of backlight modular structure, it can solve glue frame and the light guide plate that is made into one in extra quality injection moulding mode, the glue point causes near the into light leak problem that produces of glue point because of need are reserved into, further solve because the picture of the LCD that this light leak problem is caused has the dark space, better light service efficiency, higher brightness and higher homogeneity cause the bright inequality and the image quality of picture not good, so can be arranged.
According to above-mentioned purpose, the invention provides a kind of preferable backlight modular structure, in order to solve the glue frame that is made into one in extra quality injection moulding mode and light guide plate required advance the light leak problem that glue point is caused.This backlight module comprises the glue frame with sunk structure, and has the outside all around that most projective structures are positioned at the glue frame, and a light guide plate is positioned at this glue frame top and a shading film is positioned at glue frame edge.Certainly, also comprise that as existing backlight module a reflector plate is positioned at the light guide plate below, most layer blooming are positioned at the light guide plate top, and at least one light source is positioned at a side of glue frame.The invention is characterized in that shading film or reflector plate have an extension corresponding sunk structure that covers on the glue frame after about 90 degree bendings.Therefore, the sunk structure that causes light leak is by shading film or reflector plate covers, and makes light to leak thus.
Description of drawings
Figure 1A and Figure 1B are respectively the three-dimensional exploded view and the diagrammatic cross-section of existing LCD;
Fig. 2 A and Fig. 2 B are respectively the glue frame that extra quality injection moulding mode forms and the vertical view and the schematic perspective view of light guide plate;
Fig. 3 A to Fig. 3 E is the schematic perspective view and the diagrammatic cross-section of one embodiment of the invention;
Fig. 4 A to Fig. 4 C is the schematic perspective view and the diagrammatic cross-section of another embodiment of the present invention; And
Fig. 5 A to Fig. 5 C is the schematic perspective view and the diagrammatic cross-section of another embodiment of the present invention.
Embodiment
Some embodiments of the present invention are described in detail as follows.Yet except this was described in detail, the present invention can also be widely implements at other embodiment.That is scope of the present invention is not subjected to the restriction of the embodiment that proposed, and the claim that proposes with the present invention is as the criterion.Secondly, when each assembly in the embodiments of the invention icon or structure during with single component or structrual description explanation, should be with this as the cognition that qualification is arranged, promptly following explanation not during the restriction on the lay special stress on number spirit of the present invention and range of application can spread on most assemblies or structure and structure of depositing and the method.Moreover in this manual, the different piece of each assembly is not drawn according to size.Some yardstick is compared with other scale dependent and is exaggerated or simplify, so that clearer description and understanding of the present invention to be provided.And the prior art that the present invention continued to use is only done quoting of emphasis formula at this, to help elaboration of the present invention.
With reference to Fig. 3 A, be the schematic perspective view of the backlight module of a preferred embodiment of the present invention.It comprises a glue frame 10, and its outside all around has most projective structure 10a, and has a sunk structure 10b at a side of glue frame 10; One light guide plate 12 is arranged on the glue frame 10, and the shading film 14 with the sunk structure 10b on an extension 14a and the corresponding glue frame 10.This extension 14a shown in Fig. 3 B, covers sunk structure 10b with the downward bending of 90 degree and makes light to spill thus, causes the generation of dark space to avoid light leakage phenomena.
In addition, glue frame 10 utilizes extra quality injection moulding mode to form simultaneously with light guide plate 12, and sunk structure 10b is in the aforementioned existing technology, forms the light guide plate glue-feeder that is not coated by the glue frame in order to import the light guide plate plastics.
With reference to Fig. 3 C, for utilizing the diagrammatic cross-section of the LCD that above-mentioned backlight module makes up.It comprises integrated glue frame 10 and light guide plate 12, and can be provided with one or several light sources 18 in the inside of glue frame 10, for example light emitting diode or cold cathode fluorescent lamp, the position that is provided with of light source 18 does not limit, be to provide the required light source of LCD to get final product, and a sunk structure 10b arranged at a side of glue frame 10 in order to reach.In addition, a multi-layer optical film 20 and a shading film 14 are arranged above light guide plate 12, in order to envelope glue frame 10 around, and, shading film 14 has that an extension 14a fold-down is curved to cover sunk structure 10b, and is provided with a liquid crystal panel 22 on shading film 14.
Shown in Fig. 3 C, the glue frame 10 that present embodiment is narrated is a hollow structure, and a reflecting plate 16 is arranged as reflection source below light guide plate 12.In addition, comprise that more a backboard 24 is positioned at reflecting plate 16 belows in order to ccontaining, fixing and protection reflecting plate 16 and glue frame 10.The combination of glue frame 10 and backboard 24 is as shown in Fig. 3 D, several most groove 24a corresponding to most projective structure 10a on glue frame 10 sides are arranged around the backboard 24, most projective structure 10a are engaged mutually with the individual groove 24a of corresponding majority, and in conjunction with fixing glue frame 10 on backboard 24.
Yet in specific embodiments of the invention, the structure of glue frame 10 might not be hollow structure, is the diagrammatic cross-section of the LCD formed of the backlight module of another embodiment of the present invention with reference to Fig. 3 E.Structure shown in its represented structure and Fig. 3 C is roughly the same, different is in the present embodiment, glue frame 10 is the whole piece structure, and come reflection ray with the bottom 17 replacement reflecting plates 16 (shown in Fig. 3 C) of glue frame 10, and because the bottom 17 of glue frame 10 is as the usefulness of reflecting plate, so do not need a backboard 24 ccontaining fixing glue frames 10 and reflecting plate 16.But, still can as other embodiment of the present invention, add that backboard 24 is in order to the protection backlight module.
With reference to Fig. 4 A, be the backlight module schematic perspective view of expression another preferred embodiment of the present invention.It comprises a glue frame 10, and side has most projective structure 10a around glue frame 10, and has a sunk structure 10b at a side of glue frame 10; One light guide plate 12 is arranged on the glue frame 10, is positioned at around the glue frame 10 in order to covering the shading film 14 of the light that is leaked by the backlight module slit, and the reflecting plate 16 with an extension 16a, be positioned at glue frame 10 belows.This extension 16a, shown in Fig. 4 B, with 90 degree upwards bending and correspondence cover light guide plate and advance glue point (being sunk structure) 10b, make light thus sunk structure 10b spill, make this zone can not produce and cause the generation of dark space because of leakage of light causes light leakage phenomena.Certainly, in this specific embodiment, glue frame 10 also is one-body molded in extra quality injection moulding mode with light guide plate 12.
With reference to Fig. 4 C, be the diagrammatic cross-section that expression utilizes the LCD that above-mentioned backlight module makes up.It comprises the glue frame 10 and light guide plate 12 of one, and in glue frame 10, be provided with one or several light sources 18, for example light emitting diode or cold cathode fluorescent lamp in order to providing LCD required light source, and have a sunk structure 10b at the opposite side of glue frame 10.In addition, multi-layer optical film 20 is arranged above light guide plate 12, and one shading film 14 in order to coat glue frame 10 around, and there is a reflecting plate 16 with an extension 16a to be positioned at glue frame 10 belows, this extension 16a bending that makes progress covers sunk structure 10b, and is provided with a liquid crystal panel 22 above shading film 14.The glue frame 10 that present embodiment is narrated is a hollow structure, and has a backboard 24 to be positioned at reflecting plate 16 belows in order to ccontaining, fixing and protection reflecting plate 16 and glue frame 10.And glue frame 10 is described as the embodiment of front with the combination of backboard 24, and a corresponding majority projective structure 10a engages mutually on most groove 24a on the backboard 24 and the side of glue frame 10, shown in Fig. 3 D, and in conjunction with fixing glue frame 10 on backboard 24.
With reference to Fig. 5 A, be the backlight module schematic perspective view of expression another embodiment of the present invention.It comprises a glue frame 10, and its outside all around at glue frame 10 has most projective structure 10a, and a light guide plate 12 is arranged on the glue frame 10, and is same, and glue frame 10 also is one-body molded in extra quality injection moulding mode with light guide plate 12.Therefore, on glue frame 10, can reserve a light guide plate glue-feeder, promptly form the side of a sunk structure 10b in glue frame 10.Be positioned at glue frame 10 first shading film 14 all around, and second shading film 15 that can directly be pasted on sunk structure 10b, it covers sunk structure 10b, make light thus sunk structure 10b spill, make that this zone can be because of leakage of light, and cause light leakage phenomena thereby cause the generation of dark space.This second shading film 15 can be a lighttight adhesive tape, or lighttight film such as reflecting plate, corrosion resistant plate, can select the material that is suitable for according to the needs in the design.
In addition, the glue frame 10 of present embodiment can be depicted as a hollow structure as Fig. 5 B equally, directly attaches second shading film 15 on the sunk structure 10b of glue frame 10, and has the backboard 24 can ccontaining or fixing glue frame 10 and reflecting plate 16.This backboard 24 is to engage mutually with the individual projective structure 10a of the majority on the glue frame 10 with the groove 24a on it, combine with glue frame 10, shown in Fig. 3 D, in addition, this one second shading film 15 also can be the part of backboard 24 among other embodiment again, be increase backboard 24 sides height to reach the purpose of covering sunk structure 10b.Perhaps, shown in Fig. 5 C, glue frame 10 can be the whole piece structure, and it directly attaches second shading film 15 on the sunk structure 10b of glue frame 10, and with the bottom 17 of glue frame 10 as reflecting plate.This second shading film 15 can be a lighttight adhesive tape, or lighttight film such as reflecting plate, corrosion resistant plate, can select the material that is suitable for according to the needs in the design.
Therefore, the present invention is by utilizing the shading film or the extension of reflecting plate, perhaps directly be attached to because of the light guide plate of being reserved with formed integrated glue frame of extra quality injection moulding mode and light guide plate to advance on the glue point, to solve the light leak problem of backlight module with shading film.Therefore also solved simultaneously light guide plate advance glue point because of the dark space that light leak caused, make back light more effectively to use, and its brightness is more even.
The above is preferred embodiment of the present invention only, is not in order to limit protection domain of the present invention.Still can be changed in the category that does not break away from flesh and blood of the present invention and implemented, these variations should still belong to scope of the present invention.Therefore, category of the present invention is defined with appended claim.
Claims (9)
1. backlight modular structure comprises:
One glue frame has at least one side that a plurality of projective structures are positioned at this glue frame, and a sunk structure is positioned at a side of this glue frame;
One light guide plate is positioned at this glue frame top; And
One shading film is positioned at the edge of this glue frame, and this shading film comprises first shading film and second shading film, and this second shading film correspondence covers this sunk structure, and this first shading film is positioned at the top of light guide plate.
2. backlight modular structure as claimed in claim 1, wherein this glue frame and this light guide plate are to form simultaneously with extra quality injection molding way.
3. backlight modular structure as claimed in claim 1, wherein the extension of this shading film is to cover this sunk structure with the about 90 bending correspondences of spending.
4. backlight modular structure as claimed in claim 1, wherein this glue frame is the whole piece structure.
5. backlight modular structure as claimed in claim 1 comprises that more a backboard is positioned at the below of this reflecting plate, and this backboard around outer side edges have that most grooves are corresponding with those projective structures to engage mutually, to fix this reflecting plate and this glue frame.
6. backlight modular structure as claimed in claim 1, wherein this second shading film is an extension of this first shading film, the bending correspondence covers this sunk structure downwards, makes light to be leaked by this sunk structure.
7. backlight modular structure as claimed in claim 1, wherein this glue frame has a hollow structure.
8. backlight modular structure as claimed in claim 7 comprises that more a reflecting plate is positioned at the below of this glue frame.
9. backlight modular structure as claimed in claim 8, wherein this reflecting plate has an extension correspondence and covers this sunk structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100977332A CN100403118C (en) | 2005-08-24 | 2005-08-24 | Backlight module structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100977332A CN100403118C (en) | 2005-08-24 | 2005-08-24 | Backlight module structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1731251A CN1731251A (en) | 2006-02-08 |
| CN100403118C true CN100403118C (en) | 2008-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100977332A Active CN100403118C (en) | 2005-08-24 | 2005-08-24 | Backlight module structure |
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| CN (1) | CN100403118C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI276893B (en) | 2005-06-22 | 2007-03-21 | Au Optronics Corp | A backlight unit |
| CN100388072C (en) * | 2006-03-02 | 2008-05-14 | 友达光电股份有限公司 | Backlight unit |
| CN101893211B (en) * | 2010-07-14 | 2012-01-11 | 深圳市华星光电技术有限公司 | Backlight module and rubber frame unit structure thereof |
| TWI452385B (en) * | 2010-12-28 | 2014-09-11 | Au Optronics Corp | Display device |
| TWI438535B (en) * | 2011-11-18 | 2014-05-21 | Au Optronics Corp | Optical film set and backlight module |
| CN103293763B (en) * | 2012-12-07 | 2016-05-18 | 上海天马微电子有限公司 | Liquid crystal indicator |
| CN103267245A (en) * | 2012-12-24 | 2013-08-28 | 上海天马微电子有限公司 | Backlight module and display |
| CN104133310A (en) * | 2014-08-22 | 2014-11-05 | 深圳市中兴移动通信有限公司 | Frame-free display device |
| CN105527673B (en) | 2016-01-05 | 2019-08-30 | 京东方光科技有限公司 | Light guide member, backlight module, display device |
| CN112946841B (en) * | 2021-02-08 | 2022-05-10 | 苏州长光华芯光电技术股份有限公司 | Optical fiber plug assembly and laser device |
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| JP2000199890A (en) * | 1998-12-29 | 2000-07-18 | Casio Comput Co Ltd | Liquid crystal display device and method for mounting the same |
| US6362860B1 (en) * | 1998-12-17 | 2002-03-26 | Alps Electric Co., Ltd. | LCD having metal shield which separates drive circuit from panel and backlight, with elastic spring fingers connecting shield and outer case |
| JP2003315793A (en) * | 2002-04-25 | 2003-11-06 | Optrex Corp | Backlight unit |
| JP2004361654A (en) * | 2003-06-04 | 2004-12-24 | Sharp Corp | Liquid crystal display |
| JP2005189448A (en) * | 2003-12-25 | 2005-07-14 | Fujitsu Kasei Kk | Liquid crystal display device and method for assembling same |
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2005
- 2005-08-24 CN CNB2005100977332A patent/CN100403118C/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6362860B1 (en) * | 1998-12-17 | 2002-03-26 | Alps Electric Co., Ltd. | LCD having metal shield which separates drive circuit from panel and backlight, with elastic spring fingers connecting shield and outer case |
| JP2000199890A (en) * | 1998-12-29 | 2000-07-18 | Casio Comput Co Ltd | Liquid crystal display device and method for mounting the same |
| JP2003315793A (en) * | 2002-04-25 | 2003-11-06 | Optrex Corp | Backlight unit |
| JP2004361654A (en) * | 2003-06-04 | 2004-12-24 | Sharp Corp | Liquid crystal display |
| JP2005189448A (en) * | 2003-12-25 | 2005-07-14 | Fujitsu Kasei Kk | Liquid crystal display device and method for assembling same |
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| Publication number | Publication date |
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| CN1731251A (en) | 2006-02-08 |
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