CN101158782A - Backlight module - Google Patents
Backlight module Download PDFInfo
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- CN101158782A CN101158782A CNA2007101769961A CN200710176996A CN101158782A CN 101158782 A CN101158782 A CN 101158782A CN A2007101769961 A CNA2007101769961 A CN A2007101769961A CN 200710176996 A CN200710176996 A CN 200710176996A CN 101158782 A CN101158782 A CN 101158782A
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- light
- lamp
- backlight module
- frame
- lamp group
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Abstract
The invention relates to a backlight module, which comprises a frame, a plurality of light groups arranged in the lower part of the frame, and module material arranged on the upper of the frame, the invention is characterized in that: a reflective board is arranged between the light group and the module material, a bottom board of the reflective board is provided with a plurality of light hole groups so as to pass the light group. The down backlight module provided by the invention can facilitate the light groups illuminant surfaces to be exposed to the light hole group on the reflective board through the arrangement on the bottom board of the reflective board, and the side board of the reflective board and the bottom board are arranged with a specific angle so as to fully utilize the light group beam. Due to adopting the down backlight source, the light conductive board with expensive price is saved, the costs are reduced; the light group heating problems are solved by the installation of heat radiator components; and the backlight module structure is simple, easy to install, and suitable for the LCD with large size.
Description
Technical field
The invention belongs to LCD and make the field, relate in particular to a kind of backlight module.
Background technology
Backlight module provides light source for LCD, is the important composition parts of LCD.Backlight module comprises reflector, and it mainly acts on is the light reflected back display screen direction that all is deviated from the LCDs direction, be indispensable assembly in the backlight module, and the design of the reflector in the backlight module of different size and Different Light is also different.
Backlight module is divided into two types of side-light type and straight-down negatives, light emitting diode (Light EmittingDiode; Hereinafter to be referred as: LED) backlight module generally adopts side-light type.As shown in Figure 1, LED lamp group 2 is arranged in the closed region that backboard 11 surrounds, side in LED lamp group 2 is provided with light guide plate 12, be used to receive the light of LED lamp group 2 emissions, in light guide plate 12 two reflectors 4 are set respectively up and down, be used for to deviate from the light reflected back light guide plate 12 of light guide plate direction, make all light that light guide plate 12 can receiving light group 2 emits.Improve light utilization.Though the LED side light type back light module can reduce the thickness of whole LCD, owing to must adopt expensive light guide plate in this structure, cost is higher; And in this structure, be provided with two reflectors, not only increase cost, and all brought difficulty for processing, installation.In addition, do not have thermal component in the existing side light type back light module, and, when the LED-backlit source power is higher, must consider heat dissipation problem because the LED pointolite is welded on the operplate printing circuit board.
Summary of the invention
The present invention be directed to the defective of existing backlight module, a kind of direct-light type LED backlight module is provided, reach and reduce cost, and have the purpose of good thermal diffusivity.
The invention provides a kind of backlight module for achieving the above object, comprise frame, be arranged on several lamp groups of described frame bottom and the mould material that is arranged on described frame top, be provided with reflector between described lamp group and the mould material, the base plate of described reflector is provided with several lamp hole groups that described lamp group is passed.
Described lamp group comprises several lamps, and described lamp hole group is and corresponding several holes or hole of lamp in the described lamp group; Described reflector also comprises four side plates, and described side plate is obliquely installed, and the angle of side plate and base plate is 100 °～105 °; Described lamp group is arranged on the circuit board, and described circuit board is connected with heat abstractor; Described frame comprises upper frame, body side frame and backboard; Described body side frame is arranged on the described circuit board, and described upper frame is arranged on described body side frame top, and described backboard is arranged on described body side frame bottom.
Backlight module provided by the invention, adopt direct-light-type backlight, and can make lamp group light-emitting area expose to lamp hole group on the reflector by on the base plate of reflector, being provided with, and the side plate and the base plate of reflector are arranged to specific angle, can make full use of lamp group light.Owing to adopt direct-light-type backlight, therefore saved expensive light guide plate, reduced cost; By installing thermal component additional, solve lamp group heating problem; And this backlight modular structure is simple, easily installation, is fit to be applied to the large scale liquid crystal display.
Description of drawings
Fig. 1 is existing backlight modular structure synoptic diagram;
Fig. 2 is a backlight modular structure synoptic diagram of the present invention;
Fig. 3 launches synoptic diagram for reflector of the present invention;
Fig. 4 is a reflector schematic perspective view of the present invention;
Fig. 5 is a reverse reflector structure synoptic diagram of the present invention;
Fig. 6 is for comprising the arrangement mode synoptic diagram of three LED in the lamp group of the present invention;
Fig. 7 is for comprising the arrangement mode synoptic diagram of four LED in the lamp group of the present invention;
Fig. 8 is for comprising the arrangement mode synoptic diagram of five LED in the lamp group of the present invention;
Fig. 9 is LED bar shaped arrangement mode synoptic diagram in the lamp group of the present invention;
Figure 10 is that the present invention is corresponding to several hole synoptic diagram are set in Fig. 6 lamp hole group;
Figure 11 is that the present invention is corresponding to single hole synoptic diagram is set in Fig. 6 lamp hole group;
Figure 12 is a backlight module one-piece construction synoptic diagram of the present invention.
Embodiment
Further specify technical scheme of the present invention below in conjunction with the drawings and specific embodiments.
Fig. 2 is a backlight modular structure synoptic diagram of the present invention, as shown in Figure 2, backlight module comprises frame 1, is arranged on several lamp groups 2 of frame 1 bottom and the mould material 3 that is arranged on frame 1 top, reflector in addition is set between lamp group 2 and the mould material 3, and the base plate 41 of reflector is provided with several lamp hole groups 5 that lamp group 2 is passed.
Particularly, sealing around frame 1 in the backlight module is enclosed to form one with backlight module, the cube structure of middle hollow is provided with on the top of frame 1 and is used to make the equally distributed mould material 3 of light, and the lamp group 2 that promising backlight module provides light is set in the bottom of frame 1.Lamp group 2 is upwards launched light, behind mould material 3, for the display screen 6 that is arranged on mould material 3 tops provides light source.For the light that lamp group 2 is emitted is utilized fully, in the cube structure area of space that frame 1 surrounds, between lamp group 2 and the mould material 3 reflector is set also, reflector is mainly used in and will deviates from all light reflected back display screen directions of display screen direction, can improve the utilization factor of lamp group light.For upwards shining, the light that lamp group 2 is emitted to see through mould material 3, arrive display screen 6, can on the base plate 41 of reflector, be arranged so that lamp group 2 several lamp hole groups 5 identical that pass with lamp group quantity, lamp group 2 is passed lamp hole group 5, the light-emitting area of lamp group 2 is exposed in the area of space that forms between reflector and the mould material 3, and promptly the light-emitting area of lamp group 2 should be higher than the base plate 41 of reflector.
Fig. 3 is that reflector of the present invention launches synoptic diagram, and as shown in Figure 3, in order better the light that is reflected by mould material and frame to be reflected, reflector also comprises four side plates 42.Side plate 42 is obliquely installed between lamp group and mould material, is used for the light of directive frame direction is launched.The light of outwards launching according to the light-emitting area of LED lamp has the characteristic of certain angle, and side plate 42 is obliquely installed, and penetrates light angle with light-emitting area and adapts, and has improved the utilization factor of light, occurs the phenomenon of dim spot when avoiding side plate 42 vertically to be provided with around the corner.The side plate 42 of reflector and base plate 41 enclose the zone between mould material and the lamp group are enclosed to form the hexahedral basin type structure of having only recording quantity, as shown in Figure 4, and the whole as far as possible directive display screen directions of the light that makes the lamp group emit.The better embodiment of reflector is for to be wholely set reflector, and promptly its base plate and side plate are a complete plate, and the base plate of reflector and the folding line between the side plate can provide accurate bending position for reflector is installed by processing and manufacturing.
Fig. 5 is a reverse reflector structure synoptic diagram of the present invention, as shown in Figure 5, in actual applications, the base plate 41 of reflector and the angle a of side plate 42 is arranged to 100 °～105 °, can produce the optical effect of the most suitable LED-backlit module.The side plate 42 and the distance H between the mould material 3 of reflector should be as far as possible little, be advisable with H ≈ 0, this be because, if H is bigger, will go out from this slit source by some light, influence the utilization factor of light.The value of the distance A at the edge of the lamp hole group 5 on the edge of lamp group 2 and the base plate 41 should be the smaller the better, can reduce the loss of luminous energy as far as possible, the more little catoptrical efficient of reflector base plate that just can improve of distance.But the numerical values recited of actual A is subjected to the influence of the welding precision of the machining precision of reflector and lamp group, as long as be processing and the enough surpluses of welding reservation, LED lamp group can spill from the lamp hole group when satisfying assembling, its edge does not have obstruction and gets final product, usually about A1=2 millimeter in the backlight module more than 26 inches.
In the direct type backlight module that present embodiment provides, lamp is LED in the lamp group, arrives display screen behind the light process mould material that LED upwards emits, for display screen provides light source; Part is radiated the light of the returning emission effect through reflector by mould material or frame, directive display screen direction has once more improved the utilization ratio of light; Owing to adopt straight-down negative, therefore saved expensive light guide plate, reduced the cost of backlight module; And the setting of monolithic reflector, also be convenient to processing and installation; This backlight module is fit to be applied in large-sized LCD.
Several LED form one group and are a lamp group, and several lamps in the lamp group can compare with the structure that is provided with of existing single lamp according to the LED mixing assembly of selecting different colours for use of design needs, and color is abundanter, and display effect is better.The shape of the lamp hole group of offering on the reflector base plate and size are definite according to the shape of LED lamp and lamp group, promptly lamp be shaped as squarely or circular, then also to want relative set be square or circular to the shape in lamp group hole.Fig. 6 to Fig. 9 is LED arrangement mode synoptic diagram in the lamp group of the present invention, the lamp hole group synoptic diagram that Figure 10, Figure 11 are provided with corresponding to Fig. 6 for the present invention.At the lamp group arrangement mode that is similar to Fig. 6, can adopt the set-up mode of lamp hole group among Figure 10 or Figure 11: when the distance between each lamp in the lamp group is big, adopt the set-up mode of lamp hole group among Figure 10, be each LED in the lamp group corresponding lamp hole is set on the reflector base plate, the lamp hole quantity in the lamp group hole is identical with the quantity of LED in the lamp group; Distance between each lamp in the lamp group hour then can adopt the set-up mode of lamp hole group among Figure 11, is that several LED are provided with a corresponding polygon lamp hole of shape in the lamp group on the reflector base plate.If the lamp group is a form as shown in Figure 9, then need to adopt the design of strip lamp hole.The present invention is not limited to the shape in lamp group shown in above-mentioned each figure and lamp group hole.
Figure 12 is a backlight module one-piece construction synoptic diagram of the present invention, and as shown in figure 12, the lamp group is arranged on the circuit board 7, controls by the lamp in 7 pairs of lamp groups 2 of circuit board.Because the LED pointolite is welded on the operplate printing circuit board, when LED power is higher, the lamp group will be sent a large amount of heats, therefore need heat abstractor 8 be set in circuit board 7 bottoms, and the heat that lamp group 2 is sent dispels the heat, and plays the effect of radiating and cooling.
As shown in figure 12, in the above embodiment, frame 1 specifically comprises upper frame 9, body side frame 10 and backboard 11.Particularly, the side of body side frame 10 close backlight module inside is according to the angle of inclination of the side plate 42 of reflector and concrete the setting, and two body side frames 10 are arranged on the circuit board 7, and circuit board 7 is provided with on the heat abstractor 8; Body side frame 10 upper surface inboards are used to be provided with mould material 3, and the outside of the upper surface of body side frame 10 is used to be provided with upper frame 9; Backboard 11 is arranged on the bottom of body side frame 10, and is connected with the lateral surface of body side frame 10, and whole backlight module is enclosed to form the enclosed box body structure by upper frame 9 and backboard 11.
Backlight module provided by the invention, adopt direct LED backlight, and can make lamp group light-emitting area expose to lamp hole group on the reflector by on the base plate of reflector, being provided with, and the side plate and the base plate of reflector are arranged to specific angle, can make full use of lamp group light.By installing thermal component additional, solve lamp group heating problem; And this backlight modular structure is simple, easily installation, is fit to be applied to the large scale liquid crystal display.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (6)
1. backlight module, comprise frame, be arranged on several lamp groups of described frame bottom and the mould material that is arranged on described frame top, it is characterized in that: be provided with reflector between described lamp group and the mould material, the base plate of described reflector is provided with several lamp hole groups that described lamp group is passed.
2. backlight module according to claim 1 is characterized in that: described reflector also comprises four side plates, and described side plate is obliquely installed.
3. backlight module according to claim 2 is characterized in that: the angle of described side plate and base plate is 100 °～105 °.
4. according to claim 1 or 2 or 3 described backlight modules, it is characterized in that: described lamp group comprises several lamps, and described lamp hole group is and corresponding several holes or hole of lamp in the described lamp group.
5. backlight module according to claim 4 is characterized in that: described lamp group is arranged on the circuit board, and described circuit board is connected with heat abstractor.
6. backlight module according to claim 5 is characterized in that: described frame comprises upper frame, body side frame and backboard; Described body side frame is arranged on the described circuit board, and described upper frame is arranged on described body side frame top, and described backboard is arranged on described body side frame bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101769961A CN101158782A (en) | 2007-11-08 | 2007-11-08 | Backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101769961A CN101158782A (en) | 2007-11-08 | 2007-11-08 | Backlight module |
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| Publication Number | Publication Date |
|---|---|
| CN101158782A true CN101158782A (en) | 2008-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101769961A Pending CN101158782A (en) | 2007-11-08 | 2007-11-08 | Backlight module |
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| CN (1) | CN101158782A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013071543A1 (en) * | 2011-11-18 | 2013-05-23 | 深圳市华星光电技术有限公司 | Flat-panel display device, stereo display device, and liquid crystal display device |
| WO2013071589A1 (en) * | 2011-11-18 | 2013-05-23 | 深圳市华星光电技术有限公司 | Flat panel display device and stereo display device |
| WO2013086712A1 (en) * | 2011-12-13 | 2013-06-20 | 深圳市华星光电技术有限公司 | Backlight module and lcd device |
| CN104791671A (en) * | 2015-05-08 | 2015-07-22 | 京东方科技集团股份有限公司 | Backlight source, testing system and method and display device |
| CN105137647A (en) * | 2015-09-29 | 2015-12-09 | 中航华东光电有限公司 | Military liquid crystal display module |
| CN105739174A (en) * | 2016-02-04 | 2016-07-06 | 京东方科技集团股份有限公司 | Backlight module and display device with same |
| CN107726125A (en) * | 2016-08-11 | 2018-02-23 | 信泰光学(深圳)有限公司 | Backlight module |
| CN108828838A (en) * | 2018-07-03 | 2018-11-16 | 浙江锦浩光电材料有限公司 | A kind of reflectance coating and backlight module with temperature incubation function |
| CN110389474A (en) * | 2018-04-23 | 2019-10-29 | 夏普株式会社 | Liquid crystal display device |
| CN113924524A (en) * | 2019-07-08 | 2022-01-11 | 三星电子株式会社 | Display device |
-
2007
- 2007-11-08 CN CNA2007101769961A patent/CN101158782A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013071543A1 (en) * | 2011-11-18 | 2013-05-23 | 深圳市华星光电技术有限公司 | Flat-panel display device, stereo display device, and liquid crystal display device |
| WO2013071589A1 (en) * | 2011-11-18 | 2013-05-23 | 深圳市华星光电技术有限公司 | Flat panel display device and stereo display device |
| WO2013086712A1 (en) * | 2011-12-13 | 2013-06-20 | 深圳市华星光电技术有限公司 | Backlight module and lcd device |
| CN104791671A (en) * | 2015-05-08 | 2015-07-22 | 京东方科技集团股份有限公司 | Backlight source, testing system and method and display device |
| CN105137647A (en) * | 2015-09-29 | 2015-12-09 | 中航华东光电有限公司 | Military liquid crystal display module |
| CN105739174A (en) * | 2016-02-04 | 2016-07-06 | 京东方科技集团股份有限公司 | Backlight module and display device with same |
| CN107726125A (en) * | 2016-08-11 | 2018-02-23 | 信泰光学(深圳)有限公司 | Backlight module |
| CN107726125B (en) * | 2016-08-11 | 2020-03-17 | 信泰光学(深圳)有限公司 | Backlight module |
| CN110389474A (en) * | 2018-04-23 | 2019-10-29 | 夏普株式会社 | Liquid crystal display device |
| CN110389474B (en) * | 2018-04-23 | 2022-05-17 | 夏普株式会社 | Liquid crystal display device having a plurality of pixel electrodes |
| CN108828838A (en) * | 2018-07-03 | 2018-11-16 | 浙江锦浩光电材料有限公司 | A kind of reflectance coating and backlight module with temperature incubation function |
| CN108828838B (en) * | 2018-07-03 | 2022-06-17 | 浙江锦浩光电材料有限公司 | Backlight module with constant temperature function |
| CN113924524A (en) * | 2019-07-08 | 2022-01-11 | 三星电子株式会社 | Display device |
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