CN101614352A - Backlight module and display module - Google Patents
Backlight module and display module Download PDFInfo
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- CN101614352A CN101614352A CN200910158835A CN200910158835A CN101614352A CN 101614352 A CN101614352 A CN 101614352A CN 200910158835 A CN200910158835 A CN 200910158835A CN 200910158835 A CN200910158835 A CN 200910158835A CN 101614352 A CN101614352 A CN 101614352A
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Abstract
The present invention discloses a kind of backlight module, and this backlight module comprises base plate, LGP, at least one first radiating block and at least one luminescence component.Base plate has loading end and protrudes at least one location division on the loading end.LGP is disposed on the loading end of base plate, and LGP has relative end face and bottom surface and a plurality of side.In a plurality of sides of LGP at least one is as incidence surface.At least one first radiating block is disposed at the periphery of LGP, and is positioned on the loading end of base plate.Each first radiating block has at least one locating hole, and at least one position point of base plate is in pairing locating hole, and a side of the close bottom edge of each first radiating block has a plurality of radiating fins.At least one luminescence component is disposed on first radiating block, and between the incidence surface of first radiating block and LGP.The present invention also discloses a kind of display module.
Description
Technical field
The present invention is relevant for backlight module and display module, and particularly relates to a kind of the assembling easily and good backlight module and the display module of radiating effect.
Background technology
Along with showing being showing improvement or progress day by day of science and technology, people can make life convenient more by the auxiliary of display unit, and for asking light, the thin characteristic of display, (Flat Panel Display FPD) becomes present main flow to flat-panel screens.In many flat-panel screens, (Liquid Crystal Display LCD) has advantageous characteristic such as high spatial utilization ratio, low consumpting power, radiationless and low electromagnetic interference to LCD, and therefore, LCD is very popular.LCD is the display module that is made of display panels and light source substantially.Because LCD is non-self luminous display, so the display panels light source of must arranging in pairs or groups can carry out the demonstration of image.Generally speaking, the display module that provides light source to display panels to be formed with backlight module is comparatively general.
Fig. 1 is the partial cutaway schematic of known a kind of display module.Please refer to Fig. 1, display module 100 comprises backlight module 110, display floater 120 and framework 130.Backlight module 110 comprises backboard 111, reflector 112, printed circuit board (PCB) 113, luminescence component 114, LGP 115, optical sheet set 116 and reflector plate 117.
Reflector 112 is disposed on the backboard 111, and printed circuit board (PCB) 113 is positioned on the reflector 112.Luminescence component 114 is disposed on the printed circuit board (PCB) 113, is suitable for providing light L to enter in the LGP 115.LGP 115 has incidence surface 115a, bottom surface 115b and exiting surface 115c, and wherein bottom surface 115b is relative with exiting surface 115c, and incidence surface 115a is connected between bottom surface 115b and the exiting surface 115c.Optical sheet set 116 is arranged at the exiting surface 115c top of LGP 115, and reflector plate 117 is arranged on the bottom surface 115b of LGP 115.Framework 130 be arranged at backlight module 110 around, and framework 130 comprise before frame 132 and center 134.Center 134 is an insulating materials, between backlight module 110 and display floater 120, directly contacts with backlight module 110 to avoid display floater 120.Preceding frame 132 is fixed in display floater 120 on the backlight module 110 with center 134, so that display floater 120 is in the face of the exiting surface 115c of LGP 115.
In display module 100, backlight module 110 is by reflector 112 lightguide plate fixings 115 and luminescence component 114.Yet luminescence component 114 is difficult for assembling with reflector 112, and the position of LGP 115 is offset easily.
On the other hand, when the poor heat radiation of luminescence component 114 so that temperature were too high, the luminous efficiency of luminescence component 114 and service life will variation.Known backlight module 110 for example uses that metal base is the printed circuit board (PCB) 130 of aluminium, fits contact with reflector 112 and carries out the temperature of heat conduction and heat radiation with reduction luminescence component 114.Yet the radiating effect of backlight module 110 is unsatisfactory, still has many improved spaces.
Summary of the invention
The present invention proposes a kind of backlight module, has to be convenient to assembling and contraposition effect accurately.
The present invention proposes a kind of display module again, has better heat radiating effect.
The present invention proposes a kind of backlight module, comprises base plate, LGP, at least one first radiating block and at least one luminescence component.Base plate has loading end and protrudes at least one location division on the loading end.LGP is disposed on the loading end of base plate, and LGP has relative end face and bottom surface and be connected in end face and the bottom surface between a plurality of sides.Wherein, the bottom surface of LGP is towards loading end, and its end face is as exiting surface, and in a plurality of side at least one is as incidence surface.At least one first radiating block is disposed at the periphery of LGP, and is positioned on the loading end of base plate.Each first radiating block has at least one locating hole, and at least one position point of base plate is in pairing locating hole, and a side of the close bottom edge of each first radiating block has a plurality of radiating fins.At least one luminescence component is disposed on pairing first radiating block, and between the incidence surface of first radiating block and pairing LGP.
In one embodiment of this invention, above-mentioned each first radiating block comprises the flat part that extends on the LGP end face, and flat part and the common clamping light guide board of base plate.
In one embodiment of this invention, above-mentioned flat part has step structure away from the bottom of an end of a plurality of radiating fins.
In one embodiment of this invention, has locating slot on the end face of above-mentioned flat part away from an end of a plurality of radiating fins.
In one embodiment of this invention, above-mentioned backlight module more comprises blooming piece, and the edge of blooming piece is positioned at locating slot.
In one embodiment of this invention, above-mentioned backlight module more comprises the reflecting layer, is disposed on the bottom surface of flat part.
In one embodiment of this invention, above-mentioned at least one first radiating block comprises a plurality of first radiating blocks of mutual combination, and a plurality of first radiating block is around LGP.
In one embodiment of this invention, above-mentioned at least one first radiating block comprises one-body molded and around first radiating block of LGP.
In one embodiment of this invention, above-mentioned backlight module more comprises at least one second radiating block, be disposed on pairing first radiating block, and combine with the location division of base plate, with common clamping first radiating block of base plate.
In one embodiment of this invention, above-mentioned at least one second radiating block comprises a plurality of second radiating blocks of mutual combination, and a plurality of second radiating block is around LGP.
In one embodiment of this invention, above-mentioned at least one second radiating block comprises one-body molded and around second radiating block of LGP.
In one embodiment of this invention, above-mentioned backlight module more comprises at least one locking part, is locked between the location division of at least one second radiating block and pairing base plate.
The present invention proposes a kind of display module again, comprises above-mentioned backlight module and display floater, and display panel configurations is in the exiting surface top of LGP.
In one embodiment of this invention, above-mentioned display module more comprises at least one second radiating block, be disposed on pairing first radiating block, and combine with the location division of base plate, with with common clamping first radiating block of base plate, wherein the edge of display floater is between first radiating block and second radiating block.
In one embodiment of this invention, above-mentioned each second radiating block comprises second flat part that extends on the display floater.
In one embodiment of this invention, above-mentioned display module more comprises the glue frame, around display floater, and between each first flat part and pairing second flat part, and the common clamping display floater of second flat part and glue frame wherein.
In one embodiment of this invention, above-mentioned display module more comprises external electronic components, is connected to display floater, and the glue frame more comprises holding part, holds external electronic components.
Based on above-mentioned, because backlight module of the present invention can use radiating block that LGP is fixed, therefore backlight module of the present invention has the easy contraposition effect accurately that reaches of assembling.Display module of the present invention is to use above-mentioned backlight module and display floater group to stand and forms, and therefore display module of the present invention has better heat radiating effect.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and cooperate appended accompanying drawing, be described in detail below.
Description of drawings
Fig. 1 is the partial cutaway schematic of known a kind of display module;
Fig. 2 is the backlight module partial schematic diagram of one embodiment of the invention;
Fig. 3 is the local schematic side view of backlight module shown in Figure 2, and it is corresponding to the position in A-A ' cross section among Fig. 2;
Fig. 4 (a)～(b) is the backlight module partial cutaway schematic of one embodiment of the invention;
Fig. 5 is the backlight module partial cutaway schematic of another embodiment of the present invention;
Fig. 6 is the backlight module partial cutaway schematic of one embodiment of the invention;
Fig. 7 is the display module schematic diagram of one embodiment of the invention;
Fig. 8 is the local enlarged diagram of display module shown in Figure 7.
Wherein, Reference numeral
100,500: display module 110,200,300: backlight module
111: aluminium backboard 112: the aluminium reflector
113: metal base printed circuit board (PCB) 114: luminescence component
115: LGP 115a: incidence surface
115b: bottom surface 115c: exiting surface
116: optical sheet set 117: reflector plate
120: display floater 1130: framework
132: preceding frame 134: center
210: base plate 210E: edge
212: loading end 214: location division
220,220a, 220b: LGP 222: end face
224: bottom surface 226: side
Radiating block 232 in 230: the first: locating hole
234: radiating fin 236: flat part
236B: bottom 236a: bottom surface
238: locating slot 240: luminescence component
260: reflecting layer 270: blooming piece
382: the second flat parts of 380: the second radiating blocks
390: locking part 510: display floater
520: glue frame 530: external electronic components
L: light T1: first thickness
T2: the second thickness S: holding part
The specific embodiment
Fig. 2 is the backlight module schematic diagram of one embodiment of the invention.Fig. 3 is the local schematic side view of backlight module shown in Figure 2, and it is corresponding to the position in A-A ' cross section among Fig. 2.
Please refer to Fig. 2 and Fig. 3, backlight module 200 comprises base plate 210, LGP 220, at least one first radiating block 230 and at least one luminescence component 240.In the present embodiment, first radiating block 230 for example is formed in one and around first radiating block 230 of LGP 220, but the invention is not restricted to this.In the embodiment that another does not illustrate, first radiating block 230 can comprise a plurality of first radiating blocks 230 of mutual combination, and a plurality of first radiating block 230 is around LGP 220.The present invention does not limit shape, size or the quantity of first radiating block 230.
As shown in Figure 3, LGP 220 is disposed on the loading end 212 of base plate 210.LGP 220 has relative end face 222 and bottom surface 224, and is connected in a plurality of sides 226 between end face 222 and the bottom surface 224.Wherein, the bottom surface 224 of LGP 220 is towards loading end 212.The end face 222 of LGP 220 is as exiting surface, and in a plurality of side 226 at least one is as incidence surface.In other words, light (not illustrating) can be entered in the LGP 220 by at least one side 226 of LGP 220, advances in LGP 220 then, and is left by the end face 222 of LGP 220.
First radiating block 230 is disposed at the periphery of LGP 220, and is positioned on the loading end 212 of base plate 210.First radiating block 230 has at least one locating hole 232, and the location division 214 of base plate 210 is positioned at pairing locating hole 232, and the side of first radiating block, 230 close base plate 210 edge 210E has a plurality of radiating fins 234.
Since radiating fin 234 the surface area that can increase by first radiating block 230 is set, therefore, first radiating block 230 can have more the contact and obtain better heat radiating effect with air or other medium.Yet only for giving an example, the present invention does not limit the quantity or the shape of radiating fin 234 to radiating fin 234 shown in Figure 3.
First radiating block 230 can comprise the flat part 236 that extends on LGP 220 end faces 222, and flat part 236 can be fixed or clamping light guide boards 220 jointly with base plate 210.Because first radiating block, 230 tools are fixed or the function of clamping light guide board 220, therefore can avoid LGP 220 buckling deformations.
In part embodiment, backlight module 200 more can comprise a reflecting layer, is disposed on the bottom surface 236a of flat part 236.Because the setting in reflecting layer can reduce the ratio that light is absorbed by first radiating block 230, therefore can improve the light utilization efficiency of backlight module 200.
A plurality of luminescence component 240 is configurable on pairing first radiating block 230, and between the incidence surface 226 of first radiating block 230 and pairing LGP 220.In the present embodiment, luminescence component 240 for example is LED optical strip (LED light-bar).LED optical strip for example comprises that (Printed Circuit Board, PCB), and this printed circuit board (PCB) for example can be metal base printed circuit board (PCB) (metal core PCB) to the printed circuit board (PCB) that is arranged on first radiating block 230.But the present invention does not limit shape, quantity or the kind of luminescence component 240, and those skilled in the art are when visual its needs change.
What deserves to be mentioned is, in part embodiment, dispel the heat because first radiating block 230 can directly contact with air by radiating fin 234, and luminescence component 240 directly contacts with first radiating block 230, therefore, the temperature of luminescence component 240 can be reduced effectively.That is to say that the luminous efficiency of luminescence component 240 and service life can improve.In addition, in backlight module 200, first radiating block 230 and base plate 210 can select to use the material of high thermal conductivity coefficient simultaneously, for example aluminium or other metal.Compared to known backlight module 110, backlight module 200 is more with the contact area of air or other medium, therefore has preferable radiating effect.
Fig. 4 (a)～(b) is the backlight module partial cutaway schematic of one embodiment of the invention.Please refer to Fig. 3 and Fig. 4 (a)～(b), in part embodiment, can be on the flat part 236 of first radiating block 230, wherein the bottom 236B away from an end of a plurality of radiating fins 234 is provided with a step structure.By the design of this step structure, but the LGP 220 of flat part 236 and base plate 210 clamping different-thickness.
For instance, the LGP 220a shown in Fig. 4 (a) has first thickness T 1, and the LGP 220b shown in Fig. 4 (b) has second thickness T 2, and wherein second thickness T 2 is greater than first thickness T 1.Shown in Fig. 4 (a), when LGP 220a had first thickness T 1, backlight module 200 can use the bottom surface 236a of the comparatively close base plate 210 of flat part 236, with base plate 210 common clamping light guide board 220a.Shown in Fig. 4 (b), when LGP 220b had second thickness T 2, backlight module 200 can use flat part 236 apart from base plate 210 bottom surface 236a far away, with base plate 210 common clamping light guide board 220b.
Fig. 5 is the backlight module partial cutaway schematic of another embodiment of the present invention.Please refer to Fig. 5, in this embodiment, for example can on the end face 236b of flat part 236, locating slot 238 be set, with fixed optics diaphragm 270 away from a plurality of radiating fins 234.Wherein, the edge 270E of blooming piece 270 can place in the locating slot 238.Blooming piece 270 for example can use diffuser plate, diffusion sheet (Diffuser), blast sheet (Brightness Enhancement film, BEF), polar biased conversion sheet (DBEF), light-collecting piece, other diaphragm that is fit to, or the combination of above-mentioned diaphragm.In part embodiment, blooming piece 270 can also be another LGP except that LGP 220.That is to say, in part embodiment, can in same backlight module, use the LGP of different-thickness or different structure simultaneously.Those skilled in the art are when the blooming piece 270 that can select to be fit to and LGP 220 collocation are used, to obtain needed effect.
Fig. 6 is the backlight module partial cutaway schematic of one embodiment of the invention.For ease of explanation, only illustrate partial component among Fig. 6.Please refer to Fig. 6, backlight module 300 more comprises at least one second radiating block 380 except that all members with above-mentioned backlight module 200.Second radiating block 380 is disposed on pairing first radiating block 230, and combines with the location division 214 of base plate 210, with base plate 210 common clamping first radiating blocks 230.In addition, backlight module 300 shown in Figure 6 more can comprise at least one locking part 390, is locked between the location division 214 of second radiating block 380 and pairing base plate 210.Wherein, identical member is represented with identical label, is repeated no more herein.Locking part 390 can be latch, screw, bolt, fastener or other structure.
In one embodiment, above-mentioned at least one second radiating block 380 comprises a plurality of second radiating blocks 380 of mutual combination, and a plurality of second radiating block 380 is around LGP 220.In another embodiment, above-mentioned at least one second radiating block 380 comprises one-body molded and around second radiating block 380 of LGP 220.In part embodiment, second radiating block 380 also can have the design as the radiating fin 234 of above-mentioned first radiating block 230.Be noted that the present invention does not limit the shape of second radiating block 380, size or quantity.
In backlight module 300, combine owing to first radiating block 230 can dock mutually with second radiating block 380, so backlight module 300 can have better radiating effect and overall construction intensity.In addition, because backlight module 300 can be fixed first radiating block 230 and second radiating block 380 simultaneously by the design of location division 214 on locking part 390 and the base plate 210, so backlight module 300 has, and assembling reaches easily and the effect of accurate positioning.In backlight module 300, first radiating block 230, second radiating block 380 and base plate 210 can select to use the material of high thermal conductivity coefficient, for example aluminium or other metal simultaneously.Compared to known backlight module 110, backlight module 200 is more with the contact area of air or other medium, therefore has preferable radiating effect.
Fig. 7 is the display module schematic diagram of one embodiment of the invention.Please refer to Fig. 7, display module 500 can comprise above-mentioned backlight module 300 and display floater 510.Display floater 510 is disposed at exiting surface 222 tops of LGP 220.Wherein, display floater 510 is a display panels for example, and other member same as described above is represented with identical label, just repeats no more herein.
In the present embodiment, second radiating block 380 can comprise second flat part 382 that extends on the display floater 510, and the edge of display floater 510 is between first radiating block 230 and second radiating block 380, specifically, the edge of display floater 510 is between second flat part 382 of first radiating block 230 and second radiating block 380.In addition, display module 500 more comprises glue frame 520.Glue frame 520 centers on display floater 510, and between first flat part 236 and pairing second flat part 382.Wherein, second flat part 382 and glue frame 520 common clamping display floaters 510.In addition, in order to increase assembling nargin and the buffer capacity that is hit, can add cushion pad (not illustrating) in the bottom of second flat part 382, cushion pad for example is a rubber material etc.
Fig. 8 is the local enlarged diagram of display module shown in Figure 7.For ease of explanation, Fig. 8 only illustrates the part of not having locking part 390 in the display module 500 and not having the location division 214 on the base plate 210, and in addition, second radiating block 380 also is omitted.Please refer to Fig. 8, in part embodiment, display module 500 more comprises external electronic components 530, is connected to display floater 510, and glue frame 520 more comprises holding part S, to hold external electronic components 530.
In the present embodiment, glue frame 520 can combine with first radiating block 230, with fixing or clamping external electronic components 530.In holding part S, glue frame 520 for example is the material that is electrically insulated, and glue frame 520 can local provide external electronic components 530 required insulation protection or thermal insulation protection.Yet shown in Figure 8 only for giving an example, the present invention does not limit kind, shape or the size of glue frame 520, does not also limit the quantity or the shape of external electronic components 530 among the holding part S.
In sum, because backlight module of the present invention can utilize the design of radiating block and base plate to fix LGP, therefore have and be convenient to assemble and contraposition effect accurately.In addition, because display module of the present invention has above-mentioned backlight module, therefore, its radiating effect is good, luminous efficiency is excellent, and service life is longer.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (27)
1. a backlight module is characterized in that, comprising:
One base plate has a loading end and protrudes at least one location division on this loading end;
One LGP, be disposed on this loading end of this base plate, this LGP have a relative end face and a bottom surface and be connected in this end face and this bottom surface between a plurality of sides, wherein this bottom surface is towards this loading end, this end face is as an exiting surface, and in the described side at least one is as an incidence surface;
At least one first radiating block, be disposed at the periphery of this LGP, and be positioned on this loading end of this base plate, each first radiating block has at least one locating hole, at least one position point of this of this base plate is in pairing this locating hole, and a side of close this bottom edge of each first radiating block has a plurality of radiating fins; And
At least one luminescence component is disposed on pairing this first radiating block, and between this incidence surface of this first radiating block and pairing this LGP.
2. backlight module according to claim 1 is characterized in that, each first radiating block comprises a flat part that extends on this LGP end face, and this flat part and this LGP of the common clamping of this base plate.
3. backlight module according to claim 2 is characterized in that, this flat part has a step structure away from the bottom of an end of described radiating fin.
4. backlight module according to claim 2 is characterized in that, has a locating slot on the end face of this flat part away from an end of described radiating fin.
5. backlight module according to claim 4 is characterized in that, more comprises a blooming piece, and the edge of this blooming piece is positioned at this locating slot.
6. backlight module according to claim 2 is characterized in that, more comprises a reflecting layer, is disposed on the bottom surface of this flat part.
7. backlight module according to claim 1 is characterized in that, this at least one first radiating block comprises a plurality of first radiating blocks of mutual combination, and described first radiating block is around this LGP.
8. backlight module according to claim 1 is characterized in that, this at least one first radiating block comprises one-body molded and around one first radiating block of this LGP.
9. backlight module according to claim 1 is characterized in that, more comprises at least one second radiating block, be disposed on pairing this first radiating block, and combine with this location division of this base plate, with this first radiating block of the common clamping of this base plate.
10. backlight module according to claim 9 is characterized in that, this at least one second radiating block comprises a plurality of second radiating blocks of mutual combination, and described second radiating block is around this LGP.
11. backlight module according to claim 9 is characterized in that, this at least one second radiating block comprises one-body molded and around one second radiating block of this LGP.
12. backlight module according to claim 9 is characterized in that, more comprises at least one locking part, is locked between this location division of this at least one second radiating block and pairing this base plate.
13. a display module is characterized in that, comprising:
One backlight module comprises:
One base plate has a loading end and protrudes at least one location division on this loading end;
One LGP, be disposed on this loading end of this base plate, this LGP have a relative end face and a bottom surface and be connected in this end face and this bottom surface between a plurality of sides, wherein this bottom surface is towards this loading end, this end face is as an exiting surface, and in the described side at least one is as an incidence surface;
At least one first radiating block, be disposed at the periphery of this LGP, and be positioned on this loading end of this base plate, each first radiating block has at least one locating hole, at least one position point of this of this base plate is in pairing this locating hole, and a side of close this bottom edge of each first radiating block has a plurality of radiating fins;
At least one luminescence component is disposed on pairing this first radiating block, and between this incidence surface of this first radiating block and pairing this LGP; And
One display floater is disposed at above this exiting surface of this LGP.
14. display module according to claim 13 is characterized in that, each first radiating block comprises one first flat part that extends on this LGP end face, and this first flat part and this LGP of the common clamping of this base plate.
15. display module according to claim 14 is characterized in that, this first flat part has a step structure away from the bottom of an end of described radiating fin.
16. display module according to claim 14 is characterized in that, has a locating slot on the end face of this first flat part away from an end of described radiating fin.
17. display module according to claim 16 is characterized in that, more comprises a blooming piece, and the edge of this blooming piece is positioned at this locating slot.
18. display module according to claim 14 is characterized in that, more comprises a reflecting layer, is disposed on the bottom surface of this first flat part.
19. display module according to claim 13, it is characterized in that, more comprise at least one second radiating block, be disposed on pairing this first radiating block, and combine with this location division of this base plate, with with this first radiating block of the common clamping of this base plate, wherein the edge of this display floater is between this first radiating block and this second radiating block.
20. display module according to claim 19 is characterized in that, each second radiating block comprises one second flat part that extends on this display floater.
21. display module according to claim 20, it is characterized in that, more comprise a glue frame, around this display floater, and between each first flat part and pairing this second flat part, wherein this second flat part and this display floater of the common clamping of this glue frame.
22. display module according to claim 21 is characterized in that, more comprises an external electronic components, is connected to this display floater, and this glue frame more comprises a holding part, holds this external electronic components.
23. display module according to claim 19 is characterized in that, this at least one second radiating block comprises a plurality of second radiating blocks of mutual combination, and described second radiating block is around this LGP.
24. display module according to claim 19 is characterized in that, this at least one second radiating block comprises one-body molded and around one second radiating block of this LGP.
25. display module according to claim 19 is characterized in that, more comprises at least one locking part, is locked between this location division of this at least one second radiating block and pairing this base plate.
26. display module according to claim 13 is characterized in that, this at least one first radiating block comprises a plurality of first radiating blocks of mutual combination, and described first radiating block is around this LGP.
27. display module according to claim 13 is characterized in that, this at least one first radiating block comprises one-body molded and around one first radiating block of this LGP.
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| CN2009101588359A CN101614352B (en) | 2009-07-08 | 2009-07-08 | Backlight module and display module |
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| CN2009101588359A CN101614352B (en) | 2009-07-08 | 2009-07-08 | Backlight module and display module |
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| CN101614352B CN101614352B (en) | 2010-12-08 |
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2009
- 2009-07-08 CN CN2009101588359A patent/CN101614352B/en not_active Expired - Fee Related
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