CN201539792U - A backlight module and a liquid crystal display device - Google Patents
A backlight module and a liquid crystal display device Download PDFInfo
- Publication number
- CN201539792U CN201539792U CN2009203133048U CN200920313304U CN201539792U CN 201539792 U CN201539792 U CN 201539792U CN 2009203133048 U CN2009203133048 U CN 2009203133048U CN 200920313304 U CN200920313304 U CN 200920313304U CN 201539792 U CN201539792 U CN 201539792U
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- China
- Prior art keywords
- backboard
- fixed part
- lampshade
- glue frame
- latch fitting
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- Expired - Fee Related
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Abstract
The utility model relates to a backlight module and a liquid crystal display device, especially a backlight module and a liquid crystal display device with features of simple structure, easy assembly and good heat radiation effect. The backlight module comprises a bottom frame, a lamp shade, a rubber frame, a conductor fixation piece and a fixing and locking piece. The bottom frame comprises a back plate and the back plate comprises a first edge and a second edge which are mutually perpendicular with each other. The lamp shade comprises a light source housing unit and an extending unit, wherein the light source housing unit is arranged at the first edge and the extending unit is connected with the light source housing unit and extends along the second edge direction. The rubber frame is arranged around the back plate and provided with a locking adding hole. The conductor fixation piece is arranged on the back plate. The fixing and locking piece is connected with the fixing piece, the back plate, the lamp shade and the rubber frame and enters into the locking adding hole of the rubber frame.
Description
Technical field
The utility model relates to a kind of backlight module and LCD, and particularly relevant for a kind of simple in structure, assembling easily and good backlight module and the LCD of radiating effect.
Background technology
In general LCD, because display panels (Liquid crystal display panel) does not have the function of active illuminating, so the display panels backlight module of must arranging in pairs or groups can carry out the demonstration of image.
Fig. 1 is the schematic diagram of known backlight module.Fig. 2 A is the sectional schematic diagram of A-A ' line in Fig. 1.Fig. 2 B is the sectional schematic diagram of B-B ' line in Fig. 1.Please also refer to Fig. 1, Fig. 2 A and Fig. 2 B, backlight module 100 comprises: underframe 110, lampshade 120, glue frame 130, lead group 142, lead fixed part 140 and solid latch fitting 152,154.The side plate 114 that underframe 110 has backboard 112 and is connected in this backboard 112.Lampshade 120 is disposed at the side 112a of backboard 112, and light source L is disposed in the lampshade 120.Glue frame 130 is provided with around backboard 112.Lead fixed part 140 is disposed on the backboard 112, with the position of fixing cord group 142.
It should be noted that solid latch fitting 152,154 is set in position, two places usually, that is, the solid latch fitting 154 (shown in Fig. 2 B) at solid latch fitting 152 of lampshade earthing position (shown in Fig. 2 A) and lead fixed part 140 places.More specifically, please refer to Fig. 2 A,,, so, can effectively reduce the leakage current of light source L Gu latch fitting 152 can from bottom to top pass backboard 112 and lampshade 120, and is attached among the glue frame 130 at lampshade earthing position place.On the other hand, please refer to Fig. 2 B, at lead fixed part 140 places, make solid latch fitting 154 from bottom to top pass lead fixed part 140 and backboard 112, and be attached among the glue frame 130, so, effectively fixing cord group 142 and prevent that lead group 142 from being pullled by external force is good to guarantee that lead group 142 and light source L electrically connect.
Yet, Gu latch fitting 152,154 typically uses self-tapping screw.Because locking of self-tapping screw is a kind of destructive mode that locks, and can't carry out heavy industry (rework) repeatedly.Moreover the solid latch fitting 152,154 of a large amount of uses can make glue frame 130 produce dust, and this will pollute other member in the backlight module 100, and can increase assembling backlight module 100 needed time and costs.
Summary of the invention
In view of this, the utility model provides a kind of backlight module, can reduce the usage quantity of solid latch fitting and assembles the required time.
The utility model provides a kind of LCD, has above-mentioned backlight module, can save manufacturing cost and have better heat radiating effect.
Based on above-mentioned, the utility model proposes a kind of backlight module, comprising: underframe, lampshade, glue frame, lead fixed part and solid latch fitting.Underframe has backboard, and this backboard has first limit and second limit that is perpendicular to one another.Lampshade is disposed on the backboard, and this lampshade comprises: light source accommodation section and extension.The light source accommodation section is arranged at first limit.Extension is connected in the light source accommodation section and along the direction on second limit and extend.Light source is disposed in the light source accommodation section.The glue frame is provided with around backboard, and the glue frame has the hole of locking.The lead fixed part is disposed on the backboard, and backboard is between lead fixed part and lampshade.Gu latch fitting connects lead fixed part, backboard, lampshade and glue frame, and solid latch fitting enters locking in the hole of glue frame.
In an embodiment of the present utility model, above-mentioned solid latch fitting connects the extension and the glue frame of lead fixed part, backboard, lampshade, and solid latch fitting enters locking in the hole of glue frame.
In an embodiment of the present utility model, above-mentioned lampshade more comprises: fixed part, be connected in extension and outstanding, wherein consolidate fixed part and the glue frame that latch fitting connects lead fixed part, backboard, lampshade, and solid latch fitting enters locking in the hole of glue frame along the direction on first limit.
In an embodiment of the present utility model, above-mentioned backboard more comprises corresponding to the opening that locks the hole, and the lead fixed part sees through opening and directly contacts with fixed part.
In an embodiment of the present utility model, above-mentioned backlight module more comprises the lead group, is connected in light source and by lead fixed part clamping.
In an embodiment of the present utility model, above-mentioned solid latch fitting comprises self-tapping screw.
In an embodiment of the present utility model, the material of above-mentioned solid latch fitting, lampshade and backboard comprises metal.
In an embodiment of the present utility model, the material of above-mentioned glue frame and lead fixed part comprises insulating materials.
In an embodiment of the present utility model, above-mentioned light source comprises cold-cathode fluorescence lamp, organic electric exciting light-emitting diode or electric exciting light-emitting diode.
In an embodiment of the present utility model, above-mentioned backlight module more comprises: LGP and optical diaphragm group.LGP is disposed on the backboard, and is positioned at a side of light source.Optical diaphragm group is arranged on the LGP.
The utility model proposes a kind of LCD again, comprising: above-mentioned backlight module and display panels.Display panels is arranged at a side of backlight module.
The lampshade of backlight module of the present utility model design in addition has extension.Therefore,, see through solid latch fitting fixing cord fixture, backboard, lampshade and glue frame, but fixing cord group fixture not only also makes lampshade ground connection simultaneously at lead group fixture place.So, compared to known backlight module, the utility model does not need to utilize solid latch fitting to lock again in lampshade earthing position place, therefore can use less solid latch fitting.In addition, above-mentioned design has also increased the contact area between backboard and the lampshade, and therefore backlight module of the present utility model has preferable radiating effect.In addition, LCD of the present utility model has above-mentioned backlight module, can save manufacturing cost and assembles required man-hour.
For above-mentioned feature and advantage of the present utility model can be become apparent, embodiment cited below particularly, and cooperate appended graphic being described in detail below.
Description of drawings
Fig. 1 is the schematic diagram of known a kind of backlight module.
Fig. 2 A is the sectional schematic diagram of A-A ' line in Fig. 1.
Fig. 2 B is the sectional schematic diagram of B-B ' line in Fig. 1.
Fig. 3 is the partial schematic diagram of a kind of backlight module before group is upright of the utility model preferred embodiment.
Fig. 4 be the backlight module of Fig. 3 in group immediately along the sectional schematic diagram of C-C ' line.
Fig. 5 is the local section schematic diagram of a kind of backlight module of another embodiment of the utility model.
Fig. 6 is the generalized section of a kind of LCD of the utility model preferred embodiment.
[primary clustering symbol description]
100,200,200 ': backlight module
110,210: underframe
112,212: backboard
112a: side
114,214: side plate
120,220: lampshade
130,230: the glue frame
140,240: the lead fixed part
142,242: the lead group
152,154,250: Gu latch fitting
212a: first limit
212b: second limit
212c: lower surface
222: the light source accommodation section
224: extension
226: fixed part
232: lock the hole
260: LGP
270: optical diaphragm group
300: LCD
A-A ', B-B ', C-C ': line
H: opening
L: light source
The specific embodiment
Backlight module
Fig. 3 is the partial schematic diagram of a kind of backlight module before group is upright of the utility model preferred embodiment.Fig. 4 be the backlight module of Fig. 3 in group immediately along the sectional schematic diagram of C-C ' line.
Please be simultaneously with reference to Fig. 3 and Fig. 4, backlight module 200 comprises: underframe 210, lampshade 220, light source L, glue frame 230, lead fixed part 240 and solid latch fitting 250.Underframe 210 has backboard 212, and backboard 212 has the first limit 212a and the second limit 212b that is perpendicular to one another.Lampshade 220 is disposed on the backboard 210, and this lampshade 220 comprises: light source accommodation section 222 and extension 224.Light source accommodation section 222 is arranged at the first limit 212a, and extension 224 is connected in light source accommodation section 222 and along the direction of the second limit 212b and extend.Light source L is disposed in the light source accommodation section 222.Glue frame 230 is provided with around backboard 212, and glue frame 230 has the hole of locking 232.Lead fixed part 240 is disposed on the backboard 212, and backboard 212 is between lead fixed part 240 and lampshade 210.Gu latch fitting 250 connects lead fixed part 240, backboard 210, lampshade 220 and glue frame 230, and solid latch fitting 250 enters locking in the hole 232 of glue frame 230.
Be noted that herein underframe 210 also can have side plate 214, be connected in backboard 212 and project upwards from backboard 212.The light source accommodation section 222 of lampshade 220 for example can be close proximity to side plate 214.In Fig. 3, only draw a side plate 214, but also can side plate 214 all be set in the entire circumference of backboard 212.
It should be noted that, lampshade 220 can more comprise: fixed part 226, be connected in extension 224 and outstanding along the direction of the first limit 212a, Gu latch fitting 250 connects the fixed part 226 and glue frame 230 of lead fixed part 240, backboard 210, lampshade 220, and solid latch fitting 250 enters locking in the hole 232 of glue frame 230.Thus, can only utilize a solid latch fitting 250 to fix lead fixed part 240, backboard 210, lampshade 220 and glue frame 230 at lead group fixture 240 places, that is, only use a solid latch fitting 250 just 200 groups of backlight modules can be erected.The result is, but fixing cord group fixture 240 not only also makes lampshade 220 ground connection, simultaneously to reduce the leakage current of light source L.Yet only for giving an example, the utility model does not limit the position that solid latch fitting 250 is attached to lampshade 220 herein.
(do not illustrate) in another embodiment, lampshade 220 also can not have fixed part 226, and solid latch fitting 250 directly is attached on the extension 224 of lampshade 220, that is, Gu latch fitting 250 connects the extension 224 and glue frame 230 of lead fixed part 240, backboard 210, lampshade 220, and solid latch fitting 250 enters locking in the hole 232 of glue frame 230.
Moreover, Gu latch fitting 250 can use self-tapping screw, to simplify the step of assembling.Particularly, because the utility model only needs to carry out locking of solid latch fitting 250 at lead fixed part 240 places, reduced the usage quantity of solid latch fitting 250.The result is to reduce the dust that is produced when solid latch fitting 250 enters glue frame 230 significantly.In brief, backlight module 200 of the present utility model simple in structure only need use solid 250 groups of latch fittings upright at lead fixed part 240 places of backlight module 200.Above-mentioned design can be saved the usage quantity of solid latch fitting 250, simplifies the process of assembling, and solves known because of locking the problem (as dust pollution) that solid latch fitting 250 is caused in a large number.
Please continue with reference to Fig. 4, backlight module 200 can comprise lead group 242, is connected in light source L and by lead fixed part 240 clampings.Lead group 242 can be connected in power supply device (not illustrating), to provide power supply to light source L or be arranged at other assembly on the backlight module 200.Usually, the wire rod 242 that is connected with light source L can be fixed in the lower surface 212c of backboard 212.
In addition, backboard 212 also can comprise corresponding to the opening H that locks hole 232, and lead fixed part 240 directly contacts with fixed part 226 through opening H.The shape of opening H can be designed at the shape of lead fixed part 240, so that lead fixed part 240 closely fastens with backboard 212, and then the fixed effect of 240 pairs of lead groups 242 of reinforcement lead fixed part.
Moreover, Gu the material of latch fitting 250, lampshade 220 and backboard 210 for example is a metal.Glue frame 230 can be insulating materials with the material of lead fixed part 240.What deserves to be mentioned is that owing to lampshade 220 additionally is provided with the extension 224 that extends along the direction of the second limit 212b, so the contact area between lampshade 220 and the backboard 212 becomes big.At this moment, the heat that light source L produced can see through extension 224 effectively and conduct on the backboard 212.In other words, backlight module 200 can have better heat radiating effect.In addition, light source L for example can be cold-cathode fluorescence lamp, organic electric exciting light-emitting diode, electric exciting light-emitting diode, or other can provide the member of light.
Please continue with reference to Fig. 3 and Fig. 4, backlight module 200 also can comprise: LGP 260 and optical diaphragm group 270.At this, the backlight module that Fig. 4 illustrated is that the mode of glue frame 230 shows LGP 260 and optical diaphragm group 270 to have an X-rayed partly, and wherein, the left side of dotted line is light source accommodation section 222, and the right side of dotted line is a glue frame 230.LGP 260 is disposed on the backboard 212, and is positioned at the side of light source L, and optical diaphragm group 270 is arranged on the LGP 260.Particularly, protrude on the backboard 212 and cause LGP 260 to tilt or influence optical effect for fear of lampshade 220, backboard 212 can be designed to extension 224 coplines with lampshade 220.As shown in Figure 4, the backboard 212 on lead fixed part 240 right sides for example can have the part of a bending, so that LGP 260 flatly is placed on the extension 224 and backboard 212 of lampshade 220.
The material of LGP 260 can be the transparent polymer material, for example poly-methyl propionyl acid methyl esters class (PMMA), polycarbonate-based (PC), polystyrene type, perfluorinated resin class, epoxy resin or other suitable material.Optical diaphragm group 270 for example can be used diffusion sheet (Diffuser), blast sheet (Brightness Enhancement film, BEF), polar biased conversion sheet (DBEF) or other suitable diaphragm, wherein, optical diaphragm group 220 is arranged in pairs or groups and is formed by being selected from above-mentioned blooming piece more than at least a, so that light evenly and concentrate.The present technique field has knows the knowledgeable usually, when different LGPs and the optical diaphragm group of can optionally arranging in pairs or groups, to obtain needed optical effect.
Fig. 5 is the local section schematic diagram of a kind of backlight module of another embodiment of the utility model.Please refer to Fig. 5, backlight module 200 ' and above-mentioned backlight module 200 are similar, and wherein identical member is represented with identical label, please refer to above-mentioned explanation, no longer repeats herein.
Only illustrate the member of part among Fig. 5, backlight module 200 ' is with the difference of backlight module 200: in backlight module 200 ', the some of glue frame 230 is also extensible to enter among the opening H of backboard 212, with with lead fixed part 240 common clamping lead groups (not illustrating), more preferably to fix.
In sum, it is upright that backlight module 200,200 ' can only see through solid 250 groups of a latch fitting, and reach the function that makes lampshade 220 ground connection and fixing cord group 242 simultaneously.Backlight module of the present utility model 200,200 ' structure are comparatively simple, can reduce the usage quantity of solid latch fitting 250, and solve the problems (as a large amount of dust) of using latch fitting 250 admittedly to be caused because of a large amount of.In addition,, and increase contact area between lampshade 220 and the backboard 212, make backlight module 200 have better heat radiating effect thus by the design of the extension 224 of lampshade 220.
LCD
Fig. 6 is the generalized section of a kind of LCD of the utility model preferred embodiment.Please refer to Fig. 6, LCD 300 comprises: above-mentioned backlight module 200 (or backlight module 200 ') and display panels 310.Display panels 310 is arranged at a side of backlight module 200 (or backlight module 200 ').Particularly, display panels 310 can be arranged on the glue frame 230.
Because display panels 310 has above-mentioned backlight module 200, so LCD 300 has all mentioned technology effects of above-mentioned backlight module 200, promptly do not repeated at this.
In sum, backlight module of the present utility model and LCD have the following advantages at least:
At lead fixed part place, design has the extension of lampshade, thus, can only use solid latch fitting fixing cord fixture, backboard, lampshade and a glue frame, and usage quantity, the saving of latch fitting are assembled required man-hour and can be made lampshade carry out ground connection simultaneously to reduce light source generation leakage current admittedly in minimizing.In addition, utilize extension to make the contact area between backboard and the lampshade increase, make backlight module have better heat radiating effect.
Though the utility model discloses as above with embodiment; right its is not in order to limit the utility model; have in the technical field under any and know the knowledgeable usually; in not breaking away from spirit and scope of the present utility model; when doing a little change and retouching, so protection domain of the present utility model is as the criterion when looking accompanying the claim person of defining.
Claims (14)
1. backlight module is characterized in that comprising: a underframe, have a backboard, and this backboard has one first limit and one second limit that is perpendicular to one another; One lampshade is disposed on this backboard, and this lampshade comprises: a light source accommodation section is arranged at this first limit; One extension is connected in this light source accommodation section and along the direction on this second limit and extend; One light source is disposed in this light source accommodation section; One glue frame is provided with around this backboard, and this glue frame has one and locks the hole; One lead fixed part is disposed on this backboard, and this backboard is between this lead fixed part and this lampshade; And a solid latch fitting, connect this lead fixed part, this backboard, this lampshade and this glue frame, and should consolidate that latch fitting enters this glue frame this lock in the hole.
2. backlight module according to claim 1 is characterized in that: wherein, this solid latch fitting connects this extension and this glue frame of this lead fixed part, this backboard, this lampshade, and should solid latch fitting enter this glue frame this lock in the hole.
3. backlight module according to claim 1, it is characterized in that: wherein, this lampshade more comprises: a fixed part, be connected in this extension and outstanding along the direction on this first limit, this fixed part and this glue frame that should solid latch fitting connect this lead fixed part, this backboard, this lampshade, and should solid latch fitting enter this glue frame this lock in the hole; Wherein said backboard more comprises an opening that locks the hole corresponding to this, and this lead fixed part sees through this opening and directly contacts with this fixed part.
4. backlight module according to claim 1 is characterized in that: more comprise a lead group, be connected in this light source and by this lead fixed part clamping.
5. backlight module according to claim 1 is characterized in that: wherein should comprise a self-tapping screw by solid latch fitting.
6. backlight module according to claim 1 is characterized in that: wherein, the material of this solid latch fitting, this lampshade and this backboard comprises metal; The material of described glue frame and described lead fixed part comprises insulating materials; Described light source comprises cold-cathode fluorescence lamp, organic electric exciting light-emitting diode or electric exciting light-emitting diode.
7. backlight module according to claim 1 is characterized in that, more comprises: a LGP is disposed on this backboard, and is positioned at a side of this light source; And an optical diaphragm group, be arranged on this LGP.
8. LCD, it is characterized in that comprising: a backlight module comprises: a underframe, have a backboard, this backboard has one first limit and one second limit that is perpendicular to one another; One lampshade is disposed on this backboard, and this lampshade comprises: a light source accommodation section is arranged at this first limit; One extension is connected in this light source accommodation section and along the direction on this second limit and extend; One light source is disposed in this light source accommodation section; One glue frame is provided with around this backboard, and this glue frame has one and locks the hole; One lead fixed part is disposed on this backboard, and this backboard is between this lead fixed part and this lampshade; One solid latch fitting connects this lead fixed part, this backboard, this lampshade and this glue frame, and should consolidate that latch fitting enters this glue frame this lock in the hole; And a display panels, be arranged at a side of this backlight module.
9. LCD according to claim 8 is characterized in that: wherein, this solid latch fitting connects this extension and this glue frame of this lead fixed part, this backboard, this lampshade, and should solid latch fitting enter this glue frame this lock in the hole.
10. LCD according to claim 8, it is characterized in that: wherein, this lampshade more comprises: a fixed part, be connected in this extension and outstanding along the direction on this first limit, this fixed part and this glue frame that should solid latch fitting connect this lead fixed part, this backboard, this lampshade, and should solid latch fitting enter this glue frame this lock in the hole; Wherein this backboard more comprises an opening that locks the hole corresponding to this, and this lead fixed part sees through this opening and directly contacts with this fixed part.
11. LCD according to claim 8 is characterized in that: more comprise a lead group, be connected in this light source and by this lead fixed part clamping.
12. LCD according to claim 8 is characterized in that: wherein should comprise a self-tapping screw by solid latch fitting.
13. LCD according to claim 8 is characterized in that: wherein, the material of this solid latch fitting, this lampshade and this backboard comprises metal; The material of described glue frame and this lead fixed part comprises insulating materials; Described light source comprises cold-cathode fluorescence lamp, organic electric exciting light-emitting diode or electric exciting light-emitting diode.
14. LCD according to claim 8 is characterized in that, more comprises: a LGP is disposed on this backboard, and is positioned at a side of this light source; And an optical diaphragm group, be arranged on this LGP; Wherein, this display panels is positioned at the top of this optical diaphragm group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203133048U CN201539792U (en) | 2009-10-26 | 2009-10-26 | A backlight module and a liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203133048U CN201539792U (en) | 2009-10-26 | 2009-10-26 | A backlight module and a liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201539792U true CN201539792U (en) | 2010-08-04 |
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|---|---|---|---|
| CN2009203133048U Expired - Fee Related CN201539792U (en) | 2009-10-26 | 2009-10-26 | A backlight module and a liquid crystal display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606953A (en) * | 2012-03-06 | 2012-07-25 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN102889516A (en) * | 2012-09-12 | 2013-01-23 | 深圳市华星光电技术有限公司 | Backlight module and display panel |
| WO2014079030A1 (en) * | 2012-11-22 | 2014-05-30 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
-
2009
- 2009-10-26 CN CN2009203133048U patent/CN201539792U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606953A (en) * | 2012-03-06 | 2012-07-25 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| WO2013131293A1 (en) * | 2012-03-06 | 2013-09-12 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN102889516A (en) * | 2012-09-12 | 2013-01-23 | 深圳市华星光电技术有限公司 | Backlight module and display panel |
| WO2014040286A1 (en) * | 2012-09-12 | 2014-03-20 | 深圳市华星光电技术有限公司 | Backlight module and display panel |
| WO2014079030A1 (en) * | 2012-11-22 | 2014-05-30 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Free format text: FORMER OWNER: CHINA PROJECTION TUBE CO., LTD. Effective date: 20130604 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130604 Address after: 350015 No. 1 Xingye Road, Mawei Science Park, Fujian, Fuzhou Patentee after: CPTF Optronics Co., Ltd. Address before: 350015 No. 1 Xingye Road, Mawei Science Park, Fujian, Fuzhou Patentee before: CPTF Optronics Co., Ltd. Patentee before: Chunghwa Picture Tubes Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100804 Termination date: 20171026 |
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| CF01 | Termination of patent right due to non-payment of annual fee |