CN202852594U - Backlight module and liquid crystal display device applied with the same - Google Patents
Backlight module and liquid crystal display device applied with the same Download PDFInfo
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- CN202852594U CN202852594U CN2012204483695U CN201220448369U CN202852594U CN 202852594 U CN202852594 U CN 202852594U CN 2012204483695 U CN2012204483695 U CN 2012204483695U CN 201220448369 U CN201220448369 U CN 201220448369U CN 202852594 U CN202852594 U CN 202852594U
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- backlight module
- lgp
- light
- backboard
- light source
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Abstract
The utility model provides a backlight module and a liquid crystal display device applied with the same. The backlight module comprises a back plate, a light guide plate, a rubber frame, a reflection sheet and a light source, wherein the light guide plate is arranged on the back plate, and provided with a light-in face and a first bottom face. The rubber frame is arranged on the back plate, and a light-in face or a curved face, corresponding to the light-in face of the light guide plate, is formed on the rubber frame. The reflection sheet is arranged on the inclined face or the curved face, and the light source is arranged on the back plate. The light source comprises a plurality of light emitting diodes and a circuit board, the plurality of light emitting diodes are arranged on the circuit board, and provided with first surfaces. First bottom faces are higher than the first surfaces, and light emitted from the light emitting diodes enters the light-in face of the light guide plate after being reflected through the reflection sheet. The back light module can improve the gap problem between the light source and the light guide plate, can further improve the internal heat dissipation problem, enables working performance to be more stable, and further improves taste.
Description
Technical field
The utility model relate to a kind of backlight module and use the bottom surface of its liquid crystal indicator, particularly a kind of LGP be higher than light source upper surface backlight module and use its liquid crystal indicator.
Background technology
Please refer to Fig. 1, Fig. 1 is the schematic diagram of known backlight module.Backlight module 1 comprises backboard 10, glue frame 20, light source 30, heat conduction bar (heat sink) 40, LGP 50 and plural layer blooming piece 60.The function of backlight module 1 is to be used to provide a uniform area source to a display floater (display panel), for example liquid crystal panel.
As shown in Figure 1, light source 30 is positioned at the side of LGP 50, and in the present embodiment, light source 30 is the circuit boards with light emitting diode (Light Emitting Diode, LED).During assembling light source 30 is connected with heat conduction bar (heat sink) 40 by the mode that locks or attach, thereby the light ray parallel that light source 30 is sent enters LGP 50, thereby line source is converted into area source.
Yet in the prior art, be difficult to control the gap between LGP 50 and the light source 30, if when assembling LGP 50 and light source 30 between excesssive gap, will cause the brightness disproportionation of whole backlight module 1; If the gap during assembling between LGP 50 and the light source 30 is too small, during backlight module 1 work, LGP 50 is heated and will expands, thereby causes the top to light source 30, makes light source 30 impaired, thereby affects the stability of backlight module 1.
Therefore, how to control the clearance issues between LGP 50 and the light source 30, and further improve the problems such as internal heat dissipating of backlight module 1, become current development institute problem needing to overcome.
The utility model content
In view of the disappearance of known techniques, the utility model proposes a kind of backlight module and use its liquid crystal indicator, the upper surface that the bottom surface of this backlight module by LGP is higher than light source improves the clearance issues between LGP and the light source.
In order to achieve the above object, the utility model proposes a kind of backlight module, this backlight module comprises backboard, LGP, glue frame, reflector plate and light source.Wherein, LGP is arranged on this backboard, and this LGP has incidence surface and the first bottom surface; The glue frame is positioned on this backboard, and this glue frame is formed with an inclined-plane or a curved surface to this incidence surface place that should LGP; Reflector plate is positioned on this inclined-plane or this curved surface; Light source is positioned on this backboard, this light source comprises a plurality of light emitting diodes and a circuit board, these a plurality of light emitting diodes are arranged on this circuit board, this light emitting diode has first surface, this first bottom surface is higher than this first surface, and the light that this light emitting diode sends enters this incidence surface of this LGP after this reflector plate reflection.
As optional technical scheme, the angle between this inclined-plane and this backboard is between 40 degree are spent to 60.
As optional technical scheme, this backlight module also comprises reflector, and this reflector is arranged at the first bottom surface of this LGP.
As optional technical scheme, this reflector plate is fixed on this glue frame.
As optional technical scheme, this reflector plate is fixed on this glue frame in the mode of pasting or inlaying or blocking.
As optional technical scheme, this LGP has exiting surface, and this exiting surface edge is provided with shading rubber belt.
As optional technical scheme, the bottom surface of this circuit board carries out whole property by heat-conducting glue and this backboard and is connected.
As optional technical scheme, this backlight module also comprises the plural layer blooming piece, and this plural layer blooming piece is positioned on this LGP.
As optional technical scheme, this plural layer blooming piece comprises diffusion sheet, upper prismatic lens, lower prismatic lens or its combination.
Backlight module of the present utility model can improve the clearance issues between light source and LGP, also can further improve the internal heat dissipating problem of backlight module, prevents LGP extruding light source, causes light source impaired; Also can prevent because of heat energy pile up the plural layer blooming piece cause the deteriorated even thawing of LGP, LGP top because of heat energy go bad jaundice may so that the service behaviour of backlight module is more stable, taste is further raising also.
In addition, the present invention also proposes a kind of liquid crystal indicator, and liquid crystal indicator comprises a backlight module, and this backlight module comprises backboard, LGP, glue frame, reflector plate and light source.Wherein, LGP is arranged on this backboard, and this LGP has incidence surface and the first bottom surface; The glue frame is positioned on this backboard, and this glue frame is formed with an inclined-plane or a curved surface to this incidence surface place that should LGP; Reflector plate is positioned on this inclined-plane or this curved surface; Light source is positioned on this backboard, this light source comprises a plurality of light emitting diodes and a circuit board, these a plurality of light emitting diodes are arranged on this circuit board, this light emitting diode has first surface, this first bottom surface is higher than this first surface, and the light that this light emitting diode sends enters this incidence surface of this LGP after this reflector plate reflection.
As optional technical scheme, the angle between this inclined-plane and this backboard is between 40 degree are spent to 60.
As optional technical scheme, this backlight module also comprises reflector, and this reflector is arranged at the first bottom surface of this LGP.
As optional technical scheme, this reflector plate is fixed on this glue frame.
As optional technical scheme, this reflector plate is fixed on this glue frame in the mode of pasting or inlaying or blocking.
As optional technical scheme, this LGP has exiting surface, and this exiting surface edge is provided with shading rubber belt.
As optional technical scheme, the bottom surface of this circuit board carries out whole property by heat-conducting glue and this backboard and is connected.
As optional technical scheme, this backlight module also comprises the plural layer blooming piece, and this plural layer blooming piece is positioned on this LGP.
As optional technical scheme, this plural layer blooming piece comprises diffusion sheet, upper prismatic lens, lower prismatic lens or its combination.
Liquid crystal indicator of the present utility model can improve the clearance issues between light source and LGP, also can further improve the internal heat dissipating problem of backlight module, prevents LGP extruding light source, causes light source impaired; Also can prevent from piling up the plural layer blooming piece cause the deteriorated even thawing of LGP, LGP top because of heat energy the possible of jaundice that go bad because of heat energy, so that the service behaviour of backlight module is more stable, taste also further improves, and then so that the service behaviour of liquid crystal indicator is more stable, taste further improves.
Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to restriction of the present utility model.
Description of drawings
Fig. 1 is the schematic diagram of known backlight module;
Fig. 2 is the generalized section of the utility model backlight module one embodiment;
Fig. 3 is the generalized section of this practical another embodiment of habit backlight module;
Fig. 4 is the generalized section of the utility model liquid crystal indicator one embodiment.
The specific embodiment
Please refer to Fig. 2 and Fig. 3, Fig. 2 is the generalized section of the utility model backlight module one embodiment, and Fig. 3 is the generalized section of another embodiment of the utility model backlight module.Backlight module 2 comprises backboard 100, glue frame 200, light source 300, LGP 500 and reflector plate 700.
Wherein LGP 500 is positioned on the backboard 100, and LGP 500 has the first bottom surface 501 and incidence surface 502.LGP 500 is arranged on the backboard 100 by the first bottom surface 501.Incidence surface 502 refers to the surface of a side of LGP 500, and it is adjacent to the first bottom surface 501.
Need to prove, identical element among label and Fig. 2 among Fig. 3, its effect and effect are all identical with Fig. 2, so do not give unnecessary details in addition.
Be because the reflection function of reflector plate 700, the light-emitting area of light emitting diode 301 does not need as shown in fig. 1 the sort of yet, presses close to LGP 500 or directly points to the incidence surface 502 of LGP 500.But can utilize stamping forming mode, backboard 100 is stamped out a groove 101, with containment circuit board 302.As shown in Figure 2, light source 300 is arranged in the groove 101 on the backboard 100, and the first surface 3011 of light emitting diode 301 is lower than the first bottom surface 501 of LGP 500.During assembling backlight module 2, directly place the groove 101 on the backboard 100 to get final product light source 300.Because light is the incidence surface 502 that reflexes to LGP 500 via reflector plate 700, need not to worry excesssive gap between light source 300 and the LGP 500 or too small.When backlight module 2 work, LGP 500 is heated in various degree expansion may occur, because the first bottom surface 501 height first surfaces 3011, be that light emitting diode 301 is away from LGP 500, so that LGP 500 can not be expressed to light source 300, thereby can not make light source 300 impaired, then guarantee the stability of backlight module 2 work.
As shown in Figure 2,100 of reflector plate 700 and backboards form an angle (in the diagram label a), namely 100 of the inclined-plane 201 of glue frame 200 and backboards form an angle, angle a spends less than 90.Preferably, the utilization rate of the light that sends in order to ensure light source 300, angle a between 40 degree between 60 degree.In addition, the user also can adjust the first surface 3011 (being the exiting surface of light emitting diode) of light emitting diode 301 and the angle between the reflector plate 700, comes so that the light utilization rate is maximum.
In the practical operation, reflector plate 700 can be fixed in by the mode of screw locking on the inclined-plane 201 of glue frame 200, in addition, can also be fixed by the mode of pasting, inlaying or engaging, and the user can select according to actual needs voluntarily, not as limit.
In the practical operation, reflector plate 700 can be a sheet metal, and the surface of sheet metal can be matsurface, particularly the first surface towards light emitting diode 301 can be matsurface, thus, can be so that light scattered reflection, thus promote the uniformity of the light of backlight module 2.
In the practical operation, backlight module 2 also comprises reflector 510, and reflector 510 is arranged at the first bottom surface 501 of LGP 500, and reflecting plate 510 is like this between LGP 500 and backboard 100, can be so that the light utilization lifting of backlight module 2 integral body.
In the practical operation, backlight module 2 also includes plural layer blooming piece 600, and this plural layer blooming piece 600 is positioned on the LGP 500.Plural layer blooming piece 600 comprises diffusion sheet, upper prismatic lens, lower prismatic lens or its combination, and this plural layer blooming piece 600 can be strengthened the quality of the light that backlight module 2 provides, and the user can select according to actual needs voluntarily, not as limit.In the present embodiment, plural layer blooming piece 600 comprises diffusion sheet 601, upper prismatic lens 602 and lower prismatic lens 603.
As shown in Figure 2, LGP 500 has exiting surface 503, and in the practical operation, the edge of exiting surface 503 is provided with shading rubber belt 800, and the zone that glue frame 200 contacts with blooming piece 600 also is provided with shading rubber belt 900.Used after shading rubber belt 800 and 900, can prevent that the light that light source 300 sends from spilling from the slit of backlight module 2, since further strengthened the utilization rate of light, also improved the quality of backlight module
In the practical operation, in order to strengthen the radiating effect of backlight module 2 inside, the bottom surface of circuit board 302 carries out whole property by heat-conducting glue 400 and backboard 100 and is connected, and makes the heat of circuit board be passed to greatest extent backboard.Because the area of backboard is larger, and is generally metallic plate, so radiating effect is better, so that the heat energy of backlight module 2 inside is difficult for being piled up in wherein, and the effect of heat radiation is also many than prior art progress.
In sum, backlight module of the present utility model can improve the clearance issues between light source and LGP, also can further improve the internal heat dissipating problem of backlight module, prevents LGP extruding light source, causes light source impaired; Also can prevent because of heat energy pile up the plural layer blooming piece cause the deteriorated even thawing of LGP, LGP top because of heat energy go bad jaundice may so that the service behaviour of backlight module is more stable, taste is further raising also.
Please refer to Fig. 4, Fig. 4 is the generalized section of the utility model liquid crystal indicator one embodiment.Liquid crystal indicator 4 comprises backlight module, liquid crystal panel 1000 and upper chase 1100.Backlight module comprises backboard 100, glue frame 200, light source 300, LGP 500 and reflector plate 700.
Wherein LGP 500 is positioned on the backboard 100, and LGP 500 has the first bottom surface 501 and incidence surface 502.LGP 500 is arranged on the backboard 100 by the first bottom surface 501.Incidence surface 502 refers to the surface of a side of LGP 500, and it is adjacent to the first bottom surface 501.
Be because the reflection function of reflector plate 700, the light-emitting area of light emitting diode 301 does not need as shown in fig. 1 the sort of yet, presses close to LGP 500 or directly points to the incidence surface 502 of LGP 500.But can utilize stamping forming mode, backboard 100 is stamped out a groove 101, with containment circuit board 302.As shown in Figure 4, light source 300 is arranged in the groove 101 on the backboard 100, and the first surface 3011 of light emitting diode 301 is lower than the first bottom surface 501 of LGP 500.During the assembling backlight module, directly place the groove 101 on the backboard 100 to get final product light source 300.Because light is the incidence surface 502 that reflexes to LGP 500 via reflector plate 700, need not to worry excesssive gap between light source 300 and the LGP 500 or too small.When backlight module is worked, LGP 500 is heated in various degree expansion may occur, because the first bottom surface 501 height first surfaces 3011, be that light emitting diode 301 is away from LGP 500, so that LGP 500 can not be expressed to light source 300, thereby can not make light source 300 impaired, then guarantee the stability of backlight module work.
In the practical operation, reflector plate 700 can be fixed in by the mode of screw locking on the inclined-plane 201 of glue frame 200, in addition, can also be fixed by the mode of pasting, inlaying or engaging, and the user can select according to actual needs voluntarily, not as limit.
In the practical operation, reflector plate 700 can be a sheet metal, and the surface of sheet metal can be matsurface, particularly the first surface towards light emitting diode 301 can be matsurface, thus, can be so that light scattered reflection, thus promote the uniformity of the light of backlight module.
In the practical operation, backlight module also comprises reflector 510, and reflector 510 is arranged at the first bottom surface 501 of LGP 500, and reflecting plate 510 is like this between LGP 500 and backboard 100, can be so that the light utilization lifting of backlight module integral body.
In the practical operation, backlight module also includes plural layer blooming piece 600, and this plural layer blooming piece 600 is positioned on the LGP 500.Plural layer blooming piece 600 comprises diffusion sheet, upper prismatic lens, lower prismatic lens or its combination, and this plural layer blooming piece 600 can be strengthened the quality of the light that backlight module provides, and the user can select according to actual needs voluntarily, not as limit.In the present embodiment, plural layer blooming piece 600 comprises diffusion sheet 601, upper prismatic lens 602 and lower prismatic lens 603.
As shown in Figure 4, LGP 500 has exiting surface 503, and in the practical operation, the edge of exiting surface 503 is provided with shading rubber belt 800, and the zone that glue frame 200 contacts with blooming piece 600 also is provided with shading rubber belt 900.Used after shading rubber belt 800 and 900, can prevent that the light that light source 300 sends from spilling from the slit of backlight module, since further strengthened the utilization rate of light, also improved the quality of backlight module.
In the practical operation, in order to strengthen the radiating effect of backlight module inside, the bottom surface of circuit board 302 carries out whole property by heat-conducting glue 400 and backboard 100 and is connected, and makes the heat of circuit board be passed to greatest extent backboard.Because the area of backboard is larger, and is generally metallic plate, so radiating effect is better, so that the heat energy of backlight module inside is difficult for being piled up in wherein, and the effect of heat radiation is also many than prior art progress.
In sum, liquid crystal indicator of the present utility model can improve the clearance issues between light source and LGP, also can further improve the internal heat dissipating problem of backlight module, prevents LGP extruding light source, causes light source impaired; Also can prevent from piling up the plural layer blooming piece cause the deteriorated even thawing of LGP, LGP top because of heat energy the possible of jaundice that go bad because of heat energy, so that the service behaviour of backlight module is more stable, taste also further improves, and then so that the service behaviour of liquid crystal indicator is more stable, taste further improves.
Certainly; the utility model also can have other various embodiments; in the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.
Claims (10)
1. backlight module is characterized in that this backlight module comprises:
Backboard;
LGP is arranged on this backboard, and this LGP has incidence surface and the first bottom surface;
The glue frame is positioned on this backboard, and this glue frame is formed with an inclined-plane or a curved surface to this incidence surface place that should LGP;
Reflector plate is positioned on this inclined-plane or this curved surface; And
Light source, be positioned on this backboard, this light source comprises a plurality of light emitting diodes and a circuit board, these a plurality of light emitting diodes are arranged on this circuit board, this light emitting diode has first surface, this first bottom surface is higher than this first surface, and the light that this light emitting diode sends enters this incidence surface of this LGP after this reflector plate reflection.
2. backlight module according to claim 1 is characterized in that: the angle between this inclined-plane and this backboard between 40 degree between 60 degree.
3. backlight module according to claim 1, it is characterized in that: this backlight module also comprises reflector, and this reflector is arranged at the first bottom surface of this LGP.
4. backlight module according to claim 3, it is characterized in that: this reflector plate is fixed on this glue frame.
5. backlight module according to claim 4 is characterized in that: this reflector plate is to paste or the mode of edge or card is fixed on this glue frame.
6. backlight module according to claim 1, it is characterized in that: this LGP has exiting surface, and this exiting surface edge is provided with shading rubber belt.
7. backlight module according to claim 1, it is characterized in that: this circuit board bottom surface carries out whole property by heat-conducting glue and this backboard and is connected.
8. backlight module according to claim 1, it is characterized in that: this backlight module also comprises the plural layer blooming piece, and this plural layer blooming piece is positioned on this LGP.
9. backlight module according to claim 1, it is characterized in that: this plural layer blooming piece comprises diffusion sheet, upper prismatic lens, lower prismatic lens or its combination.
10. a liquid crystal indicator is characterized in that this liquid crystal indicator comprises the backlight module described in any one claim in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204483695U CN202852594U (en) | 2012-09-05 | 2012-09-05 | Backlight module and liquid crystal display device applied with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204483695U CN202852594U (en) | 2012-09-05 | 2012-09-05 | Backlight module and liquid crystal display device applied with the same |
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| CN202852594U true CN202852594U (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204483695U Expired - Fee Related CN202852594U (en) | 2012-09-05 | 2012-09-05 | Backlight module and liquid crystal display device applied with the same |
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| CN (1) | CN202852594U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499052A (en) * | 2013-09-24 | 2014-01-08 | 京东方科技集团股份有限公司 | Backlight source and display device |
| CN103680339A (en) * | 2013-12-11 | 2014-03-26 | 广东长虹电子有限公司 | Radiating board and displayer with radiating board |
| CN103791323A (en) * | 2013-12-31 | 2014-05-14 | 东莞市亚星半导体有限公司 | Backlight module |
| CN106569362A (en) * | 2016-10-19 | 2017-04-19 | 京东方科技集团股份有限公司 | Backlight module group and display device |
| CN107870484A (en) * | 2017-11-07 | 2018-04-03 | 业成科技（成都）有限公司 | Liquid crystal display device and its side light type backlight module |
| CN109270721A (en) * | 2018-10-26 | 2019-01-25 | 蚌埠国显科技有限公司 | A kind of non-damageable liquid crystal display die set |
| CN109283742A (en) * | 2018-10-26 | 2019-01-29 | 蚌埠国显科技有限公司 | A kind of LED light is located at the liquid crystal display die set on the outside of backboard |
| CN112230312A (en) * | 2020-08-12 | 2021-01-15 | 达运精密工业股份有限公司 | Optical plate and display device |
| CN113759603A (en) * | 2021-09-08 | 2021-12-07 | 京东方科技集团股份有限公司 | Backlight module and display device |
-
2012
- 2012-09-05 CN CN2012204483695U patent/CN202852594U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499052A (en) * | 2013-09-24 | 2014-01-08 | 京东方科技集团股份有限公司 | Backlight source and display device |
| CN103680339A (en) * | 2013-12-11 | 2014-03-26 | 广东长虹电子有限公司 | Radiating board and displayer with radiating board |
| CN103791323A (en) * | 2013-12-31 | 2014-05-14 | 东莞市亚星半导体有限公司 | Backlight module |
| US10473974B2 (en) | 2016-10-19 | 2019-11-12 | Boe Technology Group Co., Ltd. | Backlight module and display device having the same |
| CN106569362A (en) * | 2016-10-19 | 2017-04-19 | 京东方科技集团股份有限公司 | Backlight module group and display device |
| WO2018072495A1 (en) * | 2016-10-19 | 2018-04-26 | 京东方科技集团股份有限公司 | Backlight module and display device having said backlight module |
| CN107870484A (en) * | 2017-11-07 | 2018-04-03 | 业成科技（成都）有限公司 | Liquid crystal display device and its side light type backlight module |
| CN109270721A (en) * | 2018-10-26 | 2019-01-25 | 蚌埠国显科技有限公司 | A kind of non-damageable liquid crystal display die set |
| CN109283742A (en) * | 2018-10-26 | 2019-01-29 | 蚌埠国显科技有限公司 | A kind of LED light is located at the liquid crystal display die set on the outside of backboard |
| CN112230312A (en) * | 2020-08-12 | 2021-01-15 | 达运精密工业股份有限公司 | Optical plate and display device |
| CN112230312B (en) * | 2020-08-12 | 2022-10-11 | 达运精密工业股份有限公司 | Optical plate and display device |
| CN113759603A (en) * | 2021-09-08 | 2021-12-07 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN113759603B (en) * | 2021-09-08 | 2023-05-12 | 京东方科技集团股份有限公司 | Backlight module and display device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20140905 |
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| EXPY | Termination of patent right or utility model |