CN201255800Y - Back light module and liquid crystal display - Google Patents
Back light module and liquid crystal display Download PDFInfo
- Publication number
- CN201255800Y CN201255800Y CNU2008201327735U CN200820132773U CN201255800Y CN 201255800 Y CN201255800 Y CN 201255800Y CN U2008201327735 U CNU2008201327735 U CN U2008201327735U CN 200820132773 U CN200820132773 U CN 200820132773U CN 201255800 Y CN201255800 Y CN 201255800Y
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- frame
- guide plate
- light guide
- backlight module
- lampshade
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Abstract
The utility model provides a backlight module and a liquid crystal display. The liquid crystal display comprises a backlight module, a liquid crystal panel and a front frame, wherein the liquid crystal panel is arranged at the front of the backlight module, and the backlight module and the liquid crystal panel are assembled in the front frame. The backlight module comprises a light guide plate, a reflecting sheet, two lampshade frames, a plurality of optical films and two frames, wherein the reflecting sheet is arranged at the back of the liquid guide plate, the lampshade frames are arranged at the upper and lower sides of the liquid guide plate, the lampshade frames clamp the liquid guide plate and the reflecting sheet, the optical films are arranged at the front of the liquid guide plate, the frames are stripe form and are respectively arranged at the left and the right of the liquid guide plate, the frames fix the optical films, and the frames are clamped with the lampshade frames. The backlight module has low weight to reduce material cost.
Description
Technical field
The utility model relates to a kind of image and shows the field, relates in particular to a kind of Backlight module and liquid crystal display.
Background technology
In these years, along with the fast development of the technology of LCD, and its radiation emitted amount is much smaller than traditional CRT monitor, so LCD has now become the main flow of monitor market.
Please refer to Fig. 1, Fig. 1 is the explosive view of side incident type backlight module, and described backlight module 102 comprises: glue frame 130, brightness enhancement film 142, diffusion barrier 145, light guide plate 150, lamp source 160, lampshade 170, reflector plate 180 and backboard 190.Wherein, described lamp source 160 is cold cathode fluorescent lamp pipe (Cold Cathode FluorescentLamp), it is arranged at lampshade 170 inside, described lamp source 160 is sent and can be incident to described light guide plate 150 by the light that lampshade 170 is reflected, and the reflector plate 180 that is positioned at described light guide plate 150 rears can be with the direction reflection of light toward described light guide plate 150.In addition, side 151 places of described light guide plate 150 are pasted with multi-disc reflection edge strip 152, and these reflection edge strips 152 can prevent that light from leaking out from the side of described light guide plate 150.The function of described diffusion barrier 145 is to make light mixing ground more even, so that LCD can have more uniform brightness when showing, and the function of described brightness enhancement film 142 be will diffusion light gather together, to increase the brightness of LCD 100 in angular field of view.
In addition, described backboard 190 comprises four sides 192 and a base plate 191, described side 192 and institute's base plate 191 are around an accommodation space 193, and elements such as wherein said brightness enhancement film 142, described diffusion barrier 145, described light guide plate 150, described lamp source 160, described lampshade 170 and described reflector plate 180 all are positioned in the accommodation space 193.In addition, described glue frame 130 comprises four sides 132, horizontal-extending has four fronts 131 on the described side 132, wherein, the side 132 of described glue frame 130 is interlockingly connected with the side 192 of described backboard 190, and the front 131 of described glue frame 130 can prevent that the element (as: brightness enhancement film 142, diffusion barrier 145, light guide plate 150) that is positioned in the described accommodation space 193 from dropping out.
The material of described backboard 190 is generally iron or aluminium, and its weight is bigger, does not meet frivolous trend, and also need spend bigger strength when carrying.And at present the cost of material is also more and more expensive, and therefore the cost of described backboard 190 shared ratio in whole LCD 100 is also more and more big.In addition, the side in described lamp source 160 is externally connected with potential device (not illustrating), and described potential device is to utilize principle that magnetic field induction generates electric current (also promptly: Lenz law) carry out the conversion of voltage.Because described potential device is very near described backboard 190, and the material of described backboard 190 is iron or aluminium, therefore the magnetic field that described potential device produced can form induction current on described backboard 190, and these induction currents often flow to the outside via ground wire (not illustrating), and then cause waste of electric energy.
In addition, because described lamp source 160 can produce used heat, these used heat must just can be sent to the external world with described backboard 190 through described lampshade 170, therefore may cause the overheated situation in described lamp source 160, especially when described lamp source 160 was LED lamp bar, this problem can be more serious.
Therefore, the utility model proposes a kind of new backlight module, this kind backlight module need not to be provided with glue frame 130 and backboard 190 as shown in Figure 1, therefore can reduce material cost and weight reduction, the waste of energy that induction current caused simultaneously also can lower, and San Re problem also can be solved in addition.
Summary of the invention
The utility model fundamental purpose is to provide a kind of backlight module and the LCD of using described backlight module, and this backlight module weight is light and can reduce material cost.
In order to reach above-mentioned purpose and other purposes, the utility model provides a kind of backlight module, and it comprises:
One light guide plate;
One reflector plate is arranged at the rear of described light guide plate;
Two lampshade frames are arranged at the both sides up and down of described light guide plate, and described lampshade frame is held clamping under the arm and described light guide plate and described reflector plate;
The multi-disc blooming is arranged at the place ahead of described light guide plate; And
Two frames, these described two frames are arranged at the left and right sides of described light guide plate respectively, and described frame is being fixed above-mentioned described blooming, and described frame is to be buckle state with described lampshade frame.
Preferably, described frame has a reflecting surface, and described reflecting surface is corresponding to the side of described light guide plate, and described reflecting surface is a minute surface.
Preferably, backlight module described in the utility model also comprises two first buffering edge strips and two second buffering edge strips, and the described first buffering edge strip is to be attached on the described lampshade frame, and the described second buffering edge strip then is to be attached on the described frame.
Preferably, described frame has at least one spacing hole, and each more described blooming has at least one lug, and described lug is to be inserted in the described spacing hole.
The utility model also provides a kind of LCD, and it comprises:
One backlight module, it comprises: a light guide plate; One reflector plate is arranged at the rear of described light guide plate; Two lampshade frames are arranged at the both sides up and down of described light guide plate, and described lampshade frame is held clamping under the arm and described light guide plate and described reflector plate; The multi-disc blooming is arranged at the place ahead of described light guide plate; And two frames, these described two frames are arranged at the left and right sides of described light guide plate respectively, and described frame is being fixed the blooming of the above, and described frame is to be buckle state with described lampshade frame;
One liquid crystal panel is arranged on the place ahead of described backlight module; And
Frame before one, backlight module of the above and described liquid crystal panel are to be assembled in the described preceding frame.
Preferably, described frame has a reflecting surface, and described reflecting surface is corresponding to the side of described light guide plate, and described reflecting surface is a minute surface.
Preferably, the LCD that the utility model provides also comprises two first buffering edge strips and two second buffering edge strips, the described first buffering edge strip is to be attached on the described frame, the described second buffering edge strip then is to be attached on the described lampshade frame, and wherein said liquid crystal panel is to be placed on the surface of described first buffering edge strip and the described second buffering edge strip.
Preferably, described frame has at least one spacing hole, and each more described blooming has at least one lug, and described lug is to be inserted in the described spacing hole.
Preferably, have a plurality of first conjunctions on the frame before described, have a plurality of second conjunctions on the described frame, described lampshade frame then has a plurality of the 3rd conjunctions, and second conjunction of the above all combines with first conjunction of the above with the 3rd conjunction of the above.
Preferably, described first conjunction is opening-like, and second conjunction of the above and the 3rd conjunction of the above then are the projection shape.
Compared with prior art, because backlight module of the present utility model does not have backboard, so weight is lighter, also can reduce material cost except helping carrying.In addition, the mould that is used to make frame need not to possess hot runner, can effectively reduce manufacturing cost.And because the volume of frame of the present utility model is less, the mould of therefore making described frame can have a plurality of die cavitys, can once produce a plurality of frames, therefore can have higher productivity effect.
Because the weight of backlight module of the present utility model is lighter, therefore when backlight module dropped in ground, the reacting force that bestow on ground can be less, so the suffered impulsive force of backlight module also can be less relatively.In addition, because backlight module do not have backboard, so the used heat that the lamp source is produced only need just can be sent to the external world through the lampshade frame, therefore more can not cause the overheated situation in lamp source.
Description of drawings
Fig. 1 is the explosive view of side incident type backlight module;
Fig. 2 is the stereographic map of the LCD of embodiment of the present utility model;
Fig. 3 is the explosive view of the LCD of embodiment of the present utility model;
Fig. 4 is the partial section view of backlight module at the lamp source;
Fig. 5 is the stereographic map of lampshade frame;
Fig. 6 is the rear perspective view of backlight module;
Fig. 7 is the stereographic map of frame;
Fig. 8 is the stereographic map at another visual angle of frame;
Fig. 9 is the stereographic map at the another visual angle of frame.
Description of reference numerals: 102-backlight module; 130-glue frame; The 142-brightness enhancement film; The 145-diffusion barrier; The 150-light guide plate; The 151-side; 152-reflects edge strip; 160-lamp source; 162-electro-insulating rubber box; 170-lampshade frame; The 180-reflector plate; The 190-backboard; The 200-LCD; The 202-backlight module; Frame before the 210-; The 211-window; The 220-liquid crystal panel; The 221-viewing area; The 230-frame; 231-first thin plate; 232-second thin plate; 233-fastens the district; The 2331-projection; The 234-opening; The 235-spacing hole; The 236-reflecting surface; The 242-brightness enhancement film; 242a, 245a-lug; The 245-diffusion barrier; The 250-light guide plate; The 251-side; 260-lamp source; 270-lampshade frame; The 271-first side; The 272-second side; The 273-opening; The 280-reflector plate; 291-first buffering edge strip-292: the second buffering edge strip.
Embodiment
Below in conjunction with accompanying drawing, be described in more detail with other technical characterictic and advantage the utility model is above-mentioned.
Fig. 2 is the stereographic map of the LCD of embodiment of the present utility model, and Fig. 3 is the explosive view of the LCD of embodiment of the present utility model.Please be simultaneously with reference to Fig. 2 and Fig. 3, LCD 200 comprises: preceding frame 210, liquid crystal panel 220 and backlight module 202.Wherein, described liquid crystal panel 220 and described backlight module 202 be assembled in described before in the frame 210, described before frame 210 described liquid crystal panel 220 can be fixed together with described backlight module 202, described liquid crystal panel 220 is in order to show image.And described preceding frame 210 has a window 211, and the user can watch the viewing area 221 of described liquid crystal panel 220 by this window 211.
Described backlight module 202 comprises: two frames 230, brightness enhancement film 242, diffusion barrier 245, light guide plate 250, two lamp sources 260, two lampshade frames 270 and reflector plate 280, described lampshade frame 270 is arranged at the both sides up and down of described light guide plate 250, and described frame 230 is assembled in the left and right sides of described light guide plate 250.Described lamp source 260 for example can be the cold cathode fluorescent lamp pipe, the side that it is arranged at described lampshade frame 270 inside and is disposed at described light guide plate 250.In the present embodiment, 260 in described lamp source is arranged on wherein in the lampshade frame 270, but those of ordinary skills can be provided with lamp source 260 in two lampshade frames 270.
Then, please be simultaneously with reference to Fig. 3, Fig. 4 and Fig. 5, Fig. 4 is the partial section view of backlight module at the lamp source, Fig. 5 is the stereographic map of lampshade frame, described lampshade frame 270 is made by metal material (for example: iron or aluminium), described lampshade frame 270 comprises a first side 271 and a second side 272, and the 272 pairs of described light guide plate 250 in described first side 271 and described second side are carried out clamping with described reflector plate 280.Wherein, the length of described second side 272 is longer than the length of described first side 271, this be because: therefore the rear of described second side 272 often need lock the circuit board (not illustrating) in order to the control LCD, and the length of described second side 272 needs longer than described first side 271.
Please continue with reference to Fig. 4 and Fig. 5, on described lampshade frame 270, be pasted with the first buffering edge strip 291, and the upside of described liquid crystal panel 220 and downside be connected on the first buffering edge strip 291.Wherein, the described first buffering edge strip 291 is made of soft materials (for example: rubber or plastic strip), the function of the described first buffering edge strip 291 is: when described LCD 200 in when vibrations, the described first buffering edge strip 291 can be brought into play the effect of buffering, produces rhegma to avoid described liquid crystal panel 220.
Please refer to Fig. 5, Fig. 7 and Fig. 8, Fig. 7 is the stereographic map of frame, and Fig. 8 is the stereographic map at another visual angle of frame.Described frame 230 comprises one first thin plate 231 and one second thin plate 232, have one at the rear of described first thin plate 231 and fasten district 233, in described fastening district 231, has a projection 2331 (as shown in Figure 8), have an opening 273 on the described lampshade frame 270, described projection 2311 is interlockingly connected each other with described opening 273.Certainly, the mode that described lampshade frame 270 is buckled in described frame 230 is not limited to above-mentioned mode, and those of ordinary skills also can use other mode.Please refer to Fig. 6 and Fig. 8, Fig. 6 is the rear perspective view of backlight module, described frame 230 below rear side be provided with an opening 234, described opening 234 is interlockingly connected with projection 274 on the described lampshade frame 270.Via above-mentioned introduction, those of ordinary skills should understand clearly described lampshade frame 270 is how to fit together with described frame 230.
Then, please be simultaneously with reference to Fig. 3 and Fig. 9, Fig. 9 is the stereographic map at the another visual angle of frame, described frame has two spacing holes 235, and brightness enhancement film 242 is protruding with two lug 242a and two lug 245a respectively with diffusion barrier 245 in both sides, described lug 242a and described lug 245a are inserted in the spacing hole 235 of described frame 230, because described spacing hole 235 can limit moving of described lug 242a and described lug 245a, therefore described brightness enhancement film 242 can be fixed by described frame 230 with described diffusion barrier 245.In above-mentioned, the number of described spacing hole 235 all is two, but those of ordinary skills also can only be provided with a spacing hole 235 or the spacing hole more than three 235 according to need.Certainly, the fixed form of described brightness enhancement film 242 and described diffusion barrier 245 is not limited to above-mentioned, and those of ordinary skills also can use fixing described brightness enhancement film 242 of other mode and described diffusion barrier 245.
The material of described frame 230 for example can be for polycarbonate resin (polycarbonate) adds fiber, and if its color white, will have higher reflection coefficient.In addition, please refer to Fig. 3 and Fig. 8, described frame 230 side within it has a reflecting surface 236, described reflecting surface 236 is corresponding to the side 251 of described light guide plate 250, and described reflecting surface 236 is a minute surface, so-called minute surface is meant the surface that roughness is minimum and quite level and smooth, therefore described reflecting surface 236 has high reflection coefficient, in the described light guide plate 250 of light reflected back that can the side 251 of described light guide plate 250 is emitted, therefore need not to attach as shown in Figure 1 reflection edge strip 152 at the side of described light guide plate 250.In addition, those of ordinary skills also can be designed to frame 230 other color according to circumstances, for example: black.
Please continue with reference to Fig. 7, on described frame 230, be pasted with the second buffering edge strip 292, and the left side of described liquid crystal panel 220 and right side be connected on the described second buffering edge strip 292.The material of the described second buffering edge strip 292 and function and the described first buffering edge strip 291 are similar, therefore just repeat no more at this.
Below, will the side incident type backlight module of present embodiment and Fig. 1 be compared.At first, the backlight module 202 of present embodiment does not have backboard, so weight is lighter, also can reduce material cost except helping carrying.
In addition, compared to glue frame 130 shown in Figure 1, the required material of the frame 230 of present embodiment is obviously fewer, and the mould that is used for the glue frame 130 of construction drawing 1 need possess hot runner, therefore its manufacturing cost is higher, otherwise the mould that is used to make frame 230 need not to possess hot runner, can effectively reduce manufacturing cost.And because the volume of the frame 230 of present embodiment is less, the mould of therefore making described frame 230 can have a plurality of die cavitys, can once produce a plurality of (for example: 10) frame 230.Yet existing glue frame 130 is because volume is bigger, and the mould that therefore is used to make described glue frame 130 generally only has a die cavity, once can only produce a glue frame 130.By above-mentioned more as can be known, if adopt frame 230 of the present utility model, yield-power can significantly improve.
In addition, because that the backlight module 202 of present embodiment does not have the weight of backboard and its frame 230 is lighter than glue frame 130 again, so the overall weight of backlight module 202 is lighter, and therefore described backlight module 202 is when carrying, and the carrying strength of being bestowed can be less.
And, owing to there is not the setting of backboard, the magnetic field that the potential device in lamp source 260 (not illustrating) is produced only can produce induction current on described lampshade frame 270, and backboard 190 compared to Fig. 1, the surface area of described lampshade frame 270 gets little more than backboard 190, therefore the induced electricity that produces on described lampshade frame 270 fails to be convened for lack of a quorum less.And, if the material of described lampshade frame 270 is to adopt the relatively poor metal (as: aluminium) of electric conductivity, just then its induction current of going up generation can be littler.Thus, compared to existing backlight module 102, the electric energy that the backlight module 202 of present embodiment is wasted is lower.
In addition, because described backlight module 202 do not have backboard, so the used heat in lamp source 260 only need just can be sent to the external world through lampshade frame 270, therefore more can not cause the overheated situation in lamp source 260.
More than explanation is just illustrative for the utility model; and it is nonrestrictive; those of ordinary skills understand; under the situation of the spirit and scope that do not break away from following claims and limited; can make many modifications; change, or equivalence, but all will fall in the protection domain of the present utility model.
Claims (10)
1. backlight module is characterized in that it comprises:
One light guide plate;
One reflector plate is arranged at the rear of described light guide plate;
Two lampshade frames are arranged at the both sides up and down of described light guide plate, and described light guide plate and described reflector plate in the clamping of described lampshade frame;
The multi-disc blooming is arranged at the place ahead of described light guide plate; And
Two frames, described two frames are arranged at the left and right sides of described light guide plate respectively, and described frame is fixed described blooming, and described frame and described lampshade frame are buckle state.
2. backlight module as claimed in claim 1 is characterized in that described frame has a reflecting surface, and described reflecting surface is corresponding to the side of described light guide plate, and described reflecting surface is a minute surface.
3. backlight module as claimed in claim 1 is characterized in that, it also comprises two first buffering edge strips and two second buffering edge strips, and the described first buffering edge strip is attached on the described lampshade frame, and the described second buffering edge strip is attached on the described frame.
4. backlight module as claimed in claim 1 is characterized in that described frame has at least one spacing hole, and each more described blooming has at least one lug, and described lug is inserted in the described spacing hole.
5. LCD is characterized in that it comprises:
One backlight module, it comprises: a light guide plate; One reflector plate is arranged at the rear of described light guide plate; Two lampshade frames are arranged at the both sides up and down of described light guide plate, and described light guide plate and described reflector plate in the clamping of described lampshade frame; The multi-disc blooming is arranged at the place ahead of described light guide plate; And two frames, described two frames are arranged at the left and right sides of described light guide plate respectively, and described frame is fixed described blooming, and described frame and described lampshade frame are buckle state;
One liquid crystal panel is arranged on the place ahead of described backlight module; And
Frame before one, described backlight module and described liquid crystal panel are assembled in the described preceding frame.
6. LCD as claimed in claim 5 is characterized in that described frame has a reflecting surface, and described reflecting surface is corresponding to the side of described light guide plate, and described reflecting surface is a minute surface.
7. LCD as claimed in claim 5, it is characterized in that, it also comprises two first buffering edge strips and two second buffering edge strips, the described first buffering edge strip is attached on the described frame, the described second buffering edge strip is attached on the described lampshade frame, and described liquid crystal panel is placed on the surface of described first buffering edge strip and the described second buffering edge strip.
8. LCD as claimed in claim 5 is characterized in that described frame has at least one spacing hole, and each described blooming has at least one lug, and described lug is inserted in the described spacing hole.
9. LCD as claimed in claim 5, it is characterized in that, have a plurality of first conjunctions on the frame before described, have a plurality of second conjunctions on the described frame, described lampshade frame has a plurality of the 3rd conjunctions, and described second conjunction all combines with described first conjunction with described the 3rd conjunction.
10. LCD as claimed in claim 5 is characterized in that, described first conjunction is opening-like, and described second conjunction and described the 3rd conjunction are the projection shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201327735U CN201255800Y (en) | 2008-08-27 | 2008-08-27 | Back light module and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201327735U CN201255800Y (en) | 2008-08-27 | 2008-08-27 | Back light module and liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201255800Y true CN201255800Y (en) | 2009-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201327735U Expired - Fee Related CN201255800Y (en) | 2008-08-27 | 2008-08-27 | Back light module and liquid crystal display |
Country Status (1)
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| CN (1) | CN201255800Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813853A (en) * | 2010-04-06 | 2010-08-25 | 李海滨 | Backlight source structure applied to liquid crystal display equipment |
| CN101995703A (en) * | 2009-08-21 | 2011-03-30 | 三星电子株式会社 | Display apparatus |
| CN102588834A (en) * | 2011-11-18 | 2012-07-18 | 友达光电股份有限公司 | Backlight module and optical film thereof |
| CN103836448A (en) * | 2012-11-27 | 2014-06-04 | 群康科技(深圳)有限公司 | Backlight module and displayer comprising same |
| CN103901654A (en) * | 2014-04-24 | 2014-07-02 | 深圳市华星光电技术有限公司 | Installation structure of optical film set |
| CN104061497A (en) * | 2014-05-16 | 2014-09-24 | 友达光电股份有限公司 | Backlight module and display device thereof |
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2008
- 2008-08-27 CN CNU2008201327735U patent/CN201255800Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101995703B (en) * | 2009-08-21 | 2015-06-10 | 三星显示有限公司 | Display apparatus |
| CN101995703A (en) * | 2009-08-21 | 2011-03-30 | 三星电子株式会社 | Display apparatus |
| CN101813853A (en) * | 2010-04-06 | 2010-08-25 | 李海滨 | Backlight source structure applied to liquid crystal display equipment |
| CN102588834A (en) * | 2011-11-18 | 2012-07-18 | 友达光电股份有限公司 | Backlight module and optical film thereof |
| CN103836448A (en) * | 2012-11-27 | 2014-06-04 | 群康科技(深圳)有限公司 | Backlight module and displayer comprising same |
| CN103901654A (en) * | 2014-04-24 | 2014-07-02 | 深圳市华星光电技术有限公司 | Installation structure of optical film set |
| WO2015161531A1 (en) * | 2014-04-24 | 2015-10-29 | 深圳市华星光电技术有限公司 | Installation structure of optical film set |
| CN103901654B (en) * | 2014-04-24 | 2016-02-24 | 深圳市华星光电技术有限公司 | The mounting structure of optical diaphragm group |
| GB2535110A (en) * | 2014-04-24 | 2016-08-10 | Shenzhen China Star Optoelect | Installation structure of optical film set |
| JP2017508248A (en) * | 2014-04-24 | 2017-03-23 | 深▲セン▼市華星光電技術有限公司 | Mounting structure of optical film set |
| KR101777535B1 (en) | 2014-04-24 | 2017-09-11 | 센젠 차이나 스타 옵토일렉트로닉스 테크놀로지 컴퍼니 리미티드 | Installation structure of optical film set |
| US9772442B2 (en) | 2014-04-24 | 2017-09-26 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Optical film assembly mounting structure |
| GB2535110B (en) * | 2014-04-24 | 2021-01-20 | Shenzhen China Star Optoelect | Optical film assembly mounting structure |
| CN104061497A (en) * | 2014-05-16 | 2014-09-24 | 友达光电股份有限公司 | Backlight module and display device thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090610 Termination date: 20120827 |