CN102606948A - Edge-lit backlight module and liquid crystal display device with same - Google Patents
Edge-lit backlight module and liquid crystal display device with same Download PDFInfo
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- CN102606948A CN102606948A CN2012100479695A CN201210047969A CN102606948A CN 102606948 A CN102606948 A CN 102606948A CN 2012100479695 A CN2012100479695 A CN 2012100479695A CN 201210047969 A CN201210047969 A CN 201210047969A CN 102606948 A CN102606948 A CN 102606948A
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- light
- heat sink
- base plate
- circuit board
- module backlight
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Abstract
The invention discloses an edge-lit backlight module and a liquid crystal display device with the same. The backlight module comprises a back plate, a radiating plate and at least one light emitting diode strip. A bottom plate of the back plate is provided with a first surface, a second surface and a first through hole. The radiating plate is disposed on the first surface. The lateral edge of the radiating plate is provided with a first opening. The bottom edge of the radiating plate comprises a bent part and a horizontal part, the bent part and the first surface form a first containing space, the horizontal part is mutually abutted to the first surface, and a first through channel is reserved on the horizontal part. Each light emitting diode strip comprises a circuit board, a plurality of light emitting diodes and a first connector. A wire connected to the first connector sequentially passes through the first containing space, the first through channel and the first through hole and passes from the first surface of the bottom plate to the second surface of the bottom plate. Therefore, wire arrangement and wire fixing structures in the prior art are improved.
Description
Technical field
The present invention relates to a kind of module backlight, the liquid crystal indicator that relates in particular to side-light type module backlight and use this side-light type module backlight.
Background technology
Along with the continuous development of lcd technology, the every field during liquid crystal display product has been widely used in living.But liquid crystal itself can be not luminous, and needing light source constantly provides light to LCD Panel can realize that just picture shows, in liquid crystal display product, selects module backlight that light is provided usually.
The module of using always in the prior art backlight is divided into side-light type module backlight and down straight aphototropism mode set according to the position of light source setting; The advantage of side-light type module backlight be can the reducer crystal device integral thickness, so side-light type module backlight is used widely.
Fig. 1 is the vertical view of a kind of side-light type module backlight of common liquid crystal indicator in the prior art; As shown in Figure 1; This side-light type module 100 backlight comprises backboard 10, heat sink 20, light-emitting diode light bar 30 and light-emitting diode light bar 30 '; This backboard 10 comprise base plate 12 and around this base plate 10 and with these base plate 10 orthogonal sidewalls 11; This heat sink 20 is arranged at the inboard of this backboard and in four sidewalls 11 of the base plate 10 of this backboard 10 and backboard one; The inboard of so-called backboard is that base plate 12 centers on the accommodation space that forms with sidewall 11, and these two light-emitting diode light bars 30,30 ' are arranged on this heat sink 20 and serial connection is arranged in a row, and this light-emitting diode light bar 30 is provided with connector 31; This light-emitting diode light bar 30 ' is provided with connector 31 '; Draw wire rod 32 from connector 31, draw wire rod 32 ', the direction of routing that a plurality of reference columns 40 are used for positioning wire 32 and wire rod 32 ' is set on base plate 10 from connector 31 '; Opening is set on base plate 10 and wire rod bearing 50 is set in aperture position; Wire rod 32 and wire rod 32 ' pass to the outside of this backboard 10 and with the drive circuit board that is arranged at the backboard outside from this wire rod bearing 50 and are connected, for fixedly wire rod 32 and wire rod 32 ', can utilize adhesive tape 60 that wire rod 32 and wire rod 32 ' subsides are fixed on the base plate 12 usually.
Hence one can see that, the reason line of the wire rod of side-light type of the prior art module backlight and fixed structure more complicated, and manually-operated is loaded down with trivial details; In the process of the resonable line of operating personnel; If misoperation, pulling force is excessive, can cause wire rod to separate with the connector fracture; Cause product rejection, even if heavy industry also expends man-hour.
In the prior art; For light-emitting diode light bar and heat sink are fixed together; Common way is, a plurality of pore structures are set on the circuit board of light-emitting diode light bar, and the position of pore structure is between adjacent two light emitting diodes; In the heat sink relevant position screw is set; Utilize screw to pass this pore structure then and this screw is fixed together this light-emitting diode light bar and heat sink, this kind way influences the light effect that of light emitting diode easily, causes the display frame of liquid crystal indicator bad.
Summary of the invention
In view of this; Main purpose of the present invention is to solve the above problems and a kind of side-light type module backlight of features simple structure is provided, thus side-light type of the present invention module backlight simplified through improved cooling plate structure collocation light-emitting diode light bar the wire rod in the side-light type module backlight structure for arranging wires and wire rod fixed structure and optimized the locking mode of heat sink and light-emitting diode light bar.
The present invention provides a kind of side-light type module backlight, comprises: backboard, heat sink and at least one light-emitting diode light bar, and this backboard has base plate; This base plate has first surface and second surface, and this base plate is provided with first through hole, and this heat sink is arranged on the first surface of this base plate; This heat sink comprises side and base; The side of this heat sink is provided with first opening, and this base comprises kink and horizontal part, and the first surface of this kink and this base plate forms first accommodation space; The first surface of this horizontal part and this base plate each other against; The horizontal part of this heat sink is provided with first groove, and this light-emitting diode light bar comprises circuit board, many light emitting diodes and first connector, and these many light emitting diodes are arranged on the face of this circuit board; This first connector is arranged at the back side of this circuit board; The so-called back side for and the opposing face of the face that is provided with many light emitting diodes, the back side of this circuit board and the side of this heat sink each other against, this first connector is corresponding to the position of this first opening; The wire rod that is connected on this first connector passes this first accommodation space, this first groove and this first through hole of process are penetrated into this base plate from the first surface of this base plate second surface successively.
Preferably, the kink of this heat sink is provided with a plurality of second openings, and the circuit board of this light-emitting diode light bar is provided with a plurality of convexities, thereby these a plurality of convexities are inserted the location of realizing this circuit board and this heat sink in these a plurality of second openings respectively.
Preferably; Side in this heat sink is provided with a plurality of projections; A plurality of convexities on these a plurality of projections and this circuit board are overlapping respectively and on each projection and each convexity, be provided with screw; Thereby utilize screw pass on this projection screw and should convexity on screw lock this projection and this convexity, thereby fixing this heat sink and this light-emitting diode light bar.
Preferably, at least one pore structure is set on the horizontal part of this heat sink, is provided with screw, utilize the mode of screws that this heat sink and this base plate are locked together in the relevant position of this base plate.
Preferably; This side-light type module backlight comprises two light-emitting diode light bars; This first opening is arranged at the centre position of the side of this heat sink; This first connector is arranged at the end of this circuit board, and two first connectors of this of these two light-emitting diode light bars are adjacent and corresponding to the position of this first opening.
Preferably; This first groove is arranged at the centre position of horizontal part on the base of this heat sink; One end of this first groove is corresponding to this first opening, and the other end of this first groove is corresponding to this first through hole, thereby makes wire rod arrive this first through hole with the shortest distance from this first connector.
Preferably, this drive circuit board is arranged on the second surface of this base plate, and this wire rod connects this first connector and this drive circuit board.
The present invention also provides a kind of liquid crystal indicator, comprises aforesaid module backlight and display panels, and module backlight is overlapping puts together with this for this display panels.
Thereby the invention has the beneficial effects as follows through improved cooling plate structure collocation light-emitting diode light bar and simplified the structure for arranging wires of the wire rod in the side-light type module backlight and the fixed structure of wire rod; Can also significantly reduce the length of employed wire rod; And wire rod passes from heat sink; Operating personnel's operation is also very convenient, has saved attaching adhesive tape etc., and; The picture that the fixed form of improved heat sink and light emitting diode has been avoided screw to be arranged at and caused between two light emitting diodes shows bad problem, has improved the display quality of picture.
Below in embodiment, be described in detail detailed features of the present invention and advantage; Its content is enough to make those skilled in the art to understand technology contents of the present invention and implements according to this; And according to content, claim and the diagram that this specification disclosed, those skilled in the art can understand purpose and the advantage that the present invention is correlated with easily.
Description of drawings
Fig. 1 is the vertical view of a kind of side-light type module backlight of common liquid crystal indicator in the prior art;
Fig. 2 is the perspective exploded view of the liquid crystal indicator of one embodiment of the invention;
Fig. 3 is the partial section of side of the side-light type module backlight of one embodiment of the invention;
Fig. 4 is the schematic perspective view of the subregion of the side-light type module backlight in one embodiment of the invention;
Fig. 5 is the schematic perspective view of the subregion of the side-light type module backlight in one embodiment of the invention.
The specific embodiment
For making the object of the invention, structure, characteristic and function thereof there are further understanding, cooperate embodiment to specify as follows now.
Fig. 2 is the perspective exploded view of the liquid crystal indicator 200 that one embodiment of the invention disclosed; This liquid crystal indicator 200 comprises display panels 1000 and side-light type module 2000 backlight; Wherein, This display panels 1000 and this side-light type module 2000 overlapping putting together backlight, light penetrates the back from this side-light type module 2000 backlight and gets into this display panels 1000.
Fig. 3 is the partial section of the side of the side-light type of one embodiment of the invention module 2000 backlight; Fig. 4 is the schematic perspective view of the subregion of the module 2000 backlight of the side-light type in one embodiment of the invention, please be simultaneously with reference to figure 3 and Fig. 4, and this side-light type module 2000 backlight comprises backboard 500, heat sink 600 and two light-emitting diode light bars 800,800 '; This backboard 500 has base plate 510; This base plate 510 has first surface 511 and second surface 512, and this base plate 510 is provided with first through hole 513, and this heat sink 600 is arranged at the first surface 511 of this base plate 510; This heat sink 600 comprises side 610 and base 620; This side 610 is provided with first opening 611, and this base 620 comprises kink 621 and horizontal part 622, and this kink 621 forms first accommodation space 6210 with the first surface 511 of this base plate 510; The first surface 511 of this horizontal part 622 and this base plate 510 each other against, this horizontal part 622 is provided with first groove 6220.
Light-emitting diode light bar 800 is arranged on this heat sink 600 with light-emitting diode light bar 800 '; This light-emitting diode light bar 800 comprises circuit board 810, many light emitting diodes 820 and first connector 830; These many light emitting diodes 820 are arranged on the face of this circuit board 810; This first connector 830 is arranged at the back side of this circuit board 810; The so-called back side is and the opposing face of the face that is provided with many light emitting diodes; The side 610 of the back side of this circuit board 810 and this heat sink 600 each other against; This first connector 830 is corresponding to the position of this first opening 611; Being connected in wire rod 840 on this first connector 830 passes this first accommodation space 6210, this first groove 6220 successively and is penetrated into the second surface 512 of this base plate 510 and is connected with the drive circuit board that is arranged at second surface 512 900 from the first surface 511 of this base plate 510 through this first through hole 513; Light-emitting diode light bar 800 ' is connected in series with light-emitting diode light bar 800 and is arranged in a row; This light-emitting diode light bar 800 ' comprises circuit board 810 ', many light emitting diodes 820 ' and first connector 830 ', and these many light emitting diodes 820 ' are arranged on the face of this circuit board 810 ', and this first connector 830 ' is arranged at the back side of this circuit board 810 '; The so-called back side is and the opposing face of the face that is provided with many light emitting diodes; The side 610 of the back side of this circuit board 810 ' and this heat sink 600 each other against, this first connector 830 ' corresponding to the position of this first opening 611, be connected in wire rod 840 ' on this first connector 830 ' and pass this first accommodation space 6210, this first groove 6220 successively and be penetrated into the second surface 512 of this base plate 510 and be connected from the first surface 511 of this base plate 510 with the drive circuit board that is arranged at second surface 512 900 through this first through hole 513.
In this embodiment; This first opening 611 is arranged at the centre position of the side 610 of this heat sink 600; This first connector 830 is arranged at the end of this circuit board 810; This first connector 830 ' is arranged at the end of this circuit board 810 '; And this first connector 830 first is connected its 830 ' adjacent one another are and both corresponding to this first opening 611 with this, and this first groove 6220 is arranged at the centre position of the horizontal part 622 of this heat sink 600, and an end of this first groove 6220 is corresponding to this first opening 611; The other end of this first groove 6220 is corresponding to this first through hole 513, thereby makes wire rod 840, wire rod 840 ' arrive this first through hole 513 from this first connector 830 and this first connector 830 ' respectively with the shortest distance.
For fixing heat sink 600 on this base plate 510; On the horizontal part 622 on the base 620 of this heat sink 600, at least one pore structure is set; Relevant position in this base plate 510 is provided with screw, utilizes the mode of screws that this heat sink 600 is fixed on this base plate 510, and heat sink 600 is not limited thereto with the fixed structure of base plate 510; Also have other fixed structure to realize the fixing of heat sink 600 and base plate 510, repeat no more here.
So, through the side-light type of this kind design module backlight positioning wire very expediently, and save wire rod.
Please refer to Fig. 5; The kink 621 on the base 620 of this heat sink 600 is provided with a plurality of second openings 6211; The circuit board 810 of this light-emitting diode light bar 800 is provided with a plurality of protruding 8100; Thereby this a plurality of protruding 8100 inserts the location of realizing this circuit board and this heat sink in these a plurality of second openings 6211 respectively, is provided with a plurality of projections 6100 in the side 610 of this heat sink 600, and 810 a plurality of protruding 8100 is overlapping respectively and on each projection and each convexity, be provided with screw on these a plurality of projections 6100 and this circuit board; Screw lock respectively these a plurality of projections and these a plurality of convexities; Thereby fixing this heat sink 600 and this light-emitting diode light bar 800, light-emitting diode light bar 800 ' is the structure of similar light-emitting diode light bar 800, repeats no more in this.
Thereby the structure for arranging wires of the wire rod in the side-light type module backlight and the fixed structure of wire rod have been simplified through improved cooling plate structure collocation light-emitting diode light bar; Can also significantly reduce the length of employed wire rod; And wire rod passes from heat sink; Operating personnel's operation is also very convenient, has saved attaching adhesive tape etc., and; The picture that the fixed form of improved heat sink and light emitting diode has been avoided screw to be arranged at and caused between two light emitting diodes shows bad problem, has improved the display quality of picture.
The above is only notebook invention for presenting the preferred embodiments or the embodiment of the technological means that adopted of dealing with problems, and is not the scope that is used for limiting patent protection of the present invention.Be that all protection domains that is limited with claims of the present invention conform to, or change and modification, all belong within the scope of patent protection of the present invention according to the equalization that claim of the present invention is done.
Claims (8)
1. a side-light type module backlight is characterized in that, comprises:
Backboard has base plate, and this base plate has first surface and second surface, and this base plate is provided with first through hole;
Heat sink; Be arranged on the first surface of this base plate, this heat sink comprises side and base, and the side of this heat sink is provided with first opening; This base comprises kink and horizontal part; The first surface of this kink and this base plate forms first accommodation space, the first surface of this horizontal part and this base plate each other against, the horizontal part of this heat sink is provided with first groove;
At least one light-emitting diode light bar; This light-emitting diode light bar comprises circuit board, many light emitting diodes and first connector; These many light emitting diodes are arranged on the face of this circuit board, and this first connector is arranged at the back side of this circuit board, and the so-called back side is and the opposing face of the face that is provided with many light emitting diodes; The back side of this circuit board and the side of this heat sink each other against, this first connector is corresponding to the position of this first opening; The wire rod that is connected on this first connector passes this first accommodation space, this first groove and this first through hole of process are penetrated into this base plate from the first surface of this base plate second surface successively.
2. side-light type as claimed in claim 1 module backlight; It is characterized in that; The kink of this heat sink is provided with a plurality of second openings; The circuit board of this light-emitting diode light bar is provided with a plurality of convexities, thereby these a plurality of convexities are inserted the location of realizing this circuit board and this heat sink in these a plurality of second openings respectively.
3. side-light type as claimed in claim 2 module backlight; It is characterized in that; Side in this heat sink is provided with a plurality of projections; A plurality of convexities on these a plurality of projections and this circuit board are overlapping respectively and on each projection and each convexity, be provided with screw, thus utilize screw pass on this projection screw and should convexity on screw lock this projection and this convexity, thereby fixing this heat sink and this light-emitting diode light bar.
4. side-light type as claimed in claim 1 module backlight; It is characterized in that; At least one pore structure is set on the horizontal part of this heat sink, is provided with screw, utilize the mode of screws that this heat sink and this base plate are locked together in the relevant position of this base plate.
5. side-light type as claimed in claim 1 module backlight; It is characterized in that; This side-light type module backlight comprises two light-emitting diode light bars; This first opening is arranged at the centre position of the side of this heat sink, and this first connector is arranged at the end of this circuit board, and two first connectors of this of these two light-emitting diode light bars are adjacent and corresponding to the position of this first opening.
6. side-light type as claimed in claim 5 module backlight; It is characterized in that; This first groove is arranged at the centre position of horizontal part on the base of this heat sink; One end of this first groove is corresponding to this first opening, and the other end of this first groove is corresponding to this first through hole, thereby makes wire rod arrive this first through hole with the shortest distance from this first connector.
7. side-light type as claimed in claim 1 module backlight is characterized in that this drive circuit board is arranged on the second surface of this base plate, and this wire rod connects this first connector and this drive circuit board.
8. a liquid crystal indicator is characterized in that, comprises like claim 1-7 described module backlight of any claim and display panels, and module backlight is overlapping puts together with this for this display panels.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210047969.5A CN102606948B (en) | 2012-02-28 | 2012-02-28 | Edge-lit backlight module and liquid crystal display device with same |
| CN201410335859.8A CN104110615B (en) | 2012-02-28 | 2012-02-28 | A kind of sidelight type backlight module and use the liquid crystal indicator of this backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210047969.5A CN102606948B (en) | 2012-02-28 | 2012-02-28 | Edge-lit backlight module and liquid crystal display device with same |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410335859.8A Division CN104110615B (en) | 2012-02-28 | 2012-02-28 | A kind of sidelight type backlight module and use the liquid crystal indicator of this backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102606948A true CN102606948A (en) | 2012-07-25 |
| CN102606948B CN102606948B (en) | 2014-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210047969.5A Expired - Fee Related CN102606948B (en) | 2012-02-28 | 2012-02-28 | Edge-lit backlight module and liquid crystal display device with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102606948B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864687A (en) * | 2013-08-02 | 2016-08-17 | 瑞仪(广州)光电子器件有限公司 | Backlight module |
| CN107145003A (en) * | 2017-07-24 | 2017-09-08 | 京东方科技集团股份有限公司 | A kind of middle shell, display module, the assemble method of display device and display module |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001155526A (en) * | 1999-11-25 | 2001-06-08 | Matsushita Electric Works Ltd | Lighting device using light guide plate |
| US20070109812A1 (en) * | 2003-06-10 | 2007-05-17 | Tae-Jin Lee | Liquid crystal display and assembly thereof |
| US20080303973A1 (en) * | 2007-06-08 | 2008-12-11 | Lg Display Co., Ltd. | Backlight unit and liquid crystal display using the same |
| CN101676768A (en) * | 2008-09-18 | 2010-03-24 | 株式会社日立制作所 | Liquid crystal display appratus |
| CN201983075U (en) * | 2011-03-24 | 2011-09-21 | 京东方科技集团股份有限公司 | LED lamp strip and side-light back light module |
-
2012
- 2012-02-28 CN CN201210047969.5A patent/CN102606948B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001155526A (en) * | 1999-11-25 | 2001-06-08 | Matsushita Electric Works Ltd | Lighting device using light guide plate |
| US20070109812A1 (en) * | 2003-06-10 | 2007-05-17 | Tae-Jin Lee | Liquid crystal display and assembly thereof |
| US20080303973A1 (en) * | 2007-06-08 | 2008-12-11 | Lg Display Co., Ltd. | Backlight unit and liquid crystal display using the same |
| CN101676768A (en) * | 2008-09-18 | 2010-03-24 | 株式会社日立制作所 | Liquid crystal display appratus |
| CN201983075U (en) * | 2011-03-24 | 2011-09-21 | 京东方科技集团股份有限公司 | LED lamp strip and side-light back light module |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864687A (en) * | 2013-08-02 | 2016-08-17 | 瑞仪(广州)光电子器件有限公司 | Backlight module |
| CN107145003A (en) * | 2017-07-24 | 2017-09-08 | 京东方科技集团股份有限公司 | A kind of middle shell, display module, the assemble method of display device and display module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102606948B (en) | 2014-08-27 |
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