CN101149534A - Backlight - Google Patents
Backlight Download PDFInfo
- Publication number
- CN101149534A CN101149534A CNA200710176414XA CN200710176414A CN101149534A CN 101149534 A CN101149534 A CN 101149534A CN A200710176414X A CNA200710176414X A CN A200710176414XA CN 200710176414 A CN200710176414 A CN 200710176414A CN 101149534 A CN101149534 A CN 101149534A
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- base plate
- backlight
- substrate
- threaded hole
- heating radiator
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Abstract
This invention relates to a sort of back-light power. This back-light power consists of the lamp power, the backboard, and the radiator. The lamp power connects with the backboard, and the backboard connects with the radiator. The backboard connects with the radiator by the bolt and the nut, by the bolt and the everting whorl, or by the bolt and the whorl bore mutually. The back-light in this invention realizes the fixing of the backboard which needs elimination of heat and needs big size back-light power and the radiator, and its fixing is simple and convenient.
Description
Technical field
The present invention relates to a kind of backlight, especially a kind of backlight with heat sinking function.
Background technology
Existing flat-panel monitor mostly is LCD (Liquid Crystal Display is hereinafter to be referred as LCD) greatly, and it has advantages such as low in energy consumption, in light weight and thin thickness.Because liquid crystal itself is not luminous, so LCD need show by the transmission or the reflection of external light source.Existing LCD great majority are transmission-types, and for these transmission-types LCD, backlight is their indispensable ingredients, and backlight provides light source for LCD.Present cold cathode fluorescent tube (Cold Cathode Fluorescent Lamp, the C FL) backlight that generally uses, with CCFL as light source, but there are the following problems for existing C CFL:
1, CCFL also can produce many unwanted spectrum outside its peak value spectrum, causes that brightness worsens, and influences the high color reproduction of LCD.In LCD, light source sends only will be by the LCD plate that is made of the red, green, blue pixel, and in order to obtain high color reproduction, requiring can only have the narrow spectrum around predominant wavelength from the light of LCD pixel.
2, the white light of CCFL compares cool colour, and colour rendering is poor, is radiated at the color that produces on the object, is not so good as the bright-coloured of solar light irradiation.For example, current LCD TV CCFL commonly used only can show about 75% naked eyes color gamut.
3, CCFL belongs to tubular light source, and each zone that the light that is sent is uniformly scattered onto panel just needs quite complicated accessory part.The thickness of screen also is difficult to control, and along with the increase of panel, must use many light sources, has further aggravated the complexity and the cost of design, and large-screen liquid crystal display television is more responsive to this.
A kind of method is to utilize light emitting diode (Light Emitting Diode is hereinafter to be referred as LED) replaced C CFL is as light source, and LED has the following advantages:
1, LED spectrum is the narrow spectrum around predominant wavelength.
2, LED adopts the LED mixed white light of three primary colours, can simulate sunshine preferably, show Natural color, and it is bright-coloured more true to nature than CCFL to be radiated at the color or the LCD color relation that produce on the object.
3, LED is a kind of plane light source, the most basic luminescence unit is to be the square of 3～5mm length of side after the encapsulation, the as easy as rolling off a log area source that becomes set area of combining, has good brightness uniformity, if as the backlight of LCD TV, the ratio CCFL of the design complexity of required auxiliary optical assembly and cost is much lower.
Therefore, LED is had application prospects as the LED-backlit source of light source.But, the as a whole structure of the backboard of existing C CFL backlight, fluorescent tube directly is fixed on the backboard with the fluorescent tube holder, does not have radiator structure, and owing to the pointolite of LED is welded on the printed circuit board, led light source can produce heat, can make working temperature raise like this, and the led chip temperature is when surpassing a certain critical temperature, its luminescence efficiency can significantly reduce, this has just caused vicious cycle, and certainly will shorten the LED life-span; The back lighting device internal temperature is too high, and regular meeting causes miscellaneous part thermal stress deformation or yellow, and colour mixture is poor; The backlight internal temperature is too high, also can cause liquid crystal panel overheated, shortens liquid crystal panel display life.
Summary of the invention
The present invention provides a kind of backlight by embodiment, in order to solve the heat dissipation problem in LED-backlit source, reaches the problem that installs and fixes of backlight heating radiator and backboard.
The present invention provides following technical scheme by embodiment:
A kind of backlight comprises:
Light source is used to produce light backlight;
Heating radiator is connected with described light source, is used to distribute the heat that light source produces;
Backboard is connected with described heating radiator.
Described light source comprises that the LED light lamp group and the one side that are used to produce light are welded with described LED light lamp group, another side printed circuit board bonding with described heating radiator or that be connected by screw retention.Described heating radiator comprises interconnected substrate and fin; Described backboard comprises interconnected sidewall and base plate, and described substrate is fixedlyed connected with base plate.Have at least one louvre on the described base plate, described fin passes described louvre.The shape of described louvre is the rectangle of chamfering or rounding.Have first counter sink on the described substrate, have first through hole on the described base plate, described substrate and base plate pass through, and screw passes described first counter sink and is connected with a nut with first through hole, and is fixedly connected.Have first counter sink on the described substrate, have first threaded hole on the described base plate, described substrate and base plate pass through, and screw passes described first counter sink and is connected on described first threaded hole, and is fixedly connected.Described threaded hole has the helicitic texture of turning up.Have second counter sink on the described base plate, have second threaded hole on the described substrate, described base plate and substrate pass through, and screw passes described second counter sink and is connected on described second threaded hole, and is fixedly connected.Have second through hole on the described base plate, have second threaded hole on the described heating radiator, described base plate and substrate pass through, and screw passes described second through hole and is connected on described second threaded hole, and is fixedly connected.Described second threaded hole is embedded with swivel nut.
The present invention passes through embodiment, on the backlight of needs heat radiation, to heating radiator and backboard, and dependency structure designs, make heating radiator and backlight can pass through counter sink, through hole, screw, reach nut, perhaps counter sink, threaded hole and screw, fixedly connected, and counter sink, threaded hole can be arranged on the heating radiator, also can be arranged on the backboard, therefore, guaranteeing under the impregnable prerequisite of other dependency structures, realizing the heating radiator under the different conditions of production and the fixed installation structure of backboard
Description of drawings
Fig. 1 a is a backlight cross section structure synoptic diagram of the present invention;
Fig. 1 b is that heating radiator, screw element and printed circuit board concern synoptic diagram among Fig. 1 a;
Fig. 2 a is the back board structure synoptic diagram in the backlight of the present invention;
Fig. 2 b is the heat spreader structures synoptic diagram in the backlight of the present invention;
Fig. 2 c is for connecting the synoptic diagram of the screw element of backboard and heating radiator in the backlight of the present invention;
Fig. 3 is the connecting hole structural representation in the backlight of the present invention;
Fig. 4 is backlight embodiment one a cross section structure synoptic diagram of the present invention;
Fig. 5 is backlight embodiment two cross section structure synoptic diagram of the present invention;
Fig. 6 is backlight embodiment three cross section structure synoptic diagram of the present invention;
Fig. 7 is backlight embodiment four cross section structure synoptic diagram of the present invention;
Fig. 8 is backlight embodiment five cross section structure synoptic diagram of the present invention;
Fig. 9 is backlight embodiment six cross section structure synoptic diagram of the present invention.
Embodiment
Fig. 1 a is a backlight cross section structure synoptic diagram of the present invention.As shown in Figure 1a, this backlight comprises backboard 1, heating radiator 2, light source 3; Light source 3 comprises LED lamp group 31 and printed circuit board 32; Backboard 1 and heating radiator 2 are by screw element 4 or screw element 4 and threaded hole, and be fixedly connected; Printed circuit board 32 and heating radiator 2 are bonding or be connected by screw retention; Backboard 1 comprises sidewall 11 and base plate 12; Heating radiator 2 comprises substrate 21 and fin 22.
Fig. 1 b is that heating radiator, screw element and printed circuit board concern synoptic diagram among Fig. 1 a.Shown in Fig. 1 b, the spacing between printed circuit board 32 and the substrate 21 is H1, and the spacing between screw element 4 upper surfaces and substrate 21 upper surfaces is H2, and the thickness of substrate 21 is H3; In the practical application, H1 is the smaller the better, and when H1=0, radiating effect is best; Guarantee H2＞0, so that being connected of backboard 1 and heating radiator 2, do not influence combining closely of the printed circuit board 32 that is welded with LED lamp group and substrate 21, but H2 is big more, the part that screw element 4 is connected with substrate 21 is just more little, connection reliability will descend, and in the practical application, determine H2 numerical value according to substrate 21 thickness H3, when H3 is big, it is big that H2 can suitably get, and H3 hour, H2 must try one's best littler.
Fig. 2 a is the back board structure synoptic diagram in the backlight of the present invention.Shown in Fig. 2 a, backboard comprises sidewall 11 and base plate 12; Have louvre 121 on the base plate 12, the number of louvre 121 can be one, also can be a plurality of, and a plurality of louvres are divided into a plurality of zones with base plate 12, has solved the problem that large scale backlight integral planar degree poor-performing and shaped material of radiator are selected difficulty for use; Louvre 121 connects by the rib on the base plate 12 122; Louvre is a rectangle, and to guarantee the even of 121 rib 122 intensity of louvre, simultaneously, the Si Jiaochu of louvre 121 is processed as chamfering or rounding structure, and is too fragile to avoid Si Jiaochu, guarantees the intensity at four jiaos of places.
Fig. 2 b is the heat spreader structures synoptic diagram in the backlight of the present invention.Shown in Fig. 2 b, heating radiator comprises substrate 21 and fin 22; The number of heating radiator 2 is consistent with the number of louvre 121; When heating radiator 2 was fixedlyed connected with backboard 1, on 21 of substrates and the base plate 12, both connected at rib 122 places; Fin 22 contour structures and louvre 121 structure corresponding matching, the profile of fin 22 can be a rectangle, also can have chamfering or rounding structure.
Fig. 2 c is for connecting the synoptic diagram of the screw element of backboard and heating radiator in the backlight of the present invention.Shown in Fig. 2 c, screw element 4 comprises screw 41, nut 42 and swivel nut 43.
Fig. 3 is the connecting hole structural representation in the backlight of the present invention.As shown in Figure 3, connecting hole comprises counter sink 51, through hole 52, threaded hole 53, and counter sink 51 comprises countersunk head part 511 and throughhole portions 512.
Fig. 4 is backlight embodiment one a cross section structure synoptic diagram of the present invention.As shown in Figure 4, have first counter sink on the substrate 21 of heating radiator, have first through hole on the base plate 12 of backboard, the position of first counter sink and first through hole is corresponding; During installation, heating radiator places a side of backboard, and screw 41 is connected with the nut 42 that is positioned over the backboard opposite side by first counter sink and first through hole, and heating radiator is fixedlyed connected with backboard.
Counter sink sinks the head of screw in the present embodiment, guaranteed that spacing between screw and the upper surface of base plate greater than zero, therefore, can not influence the installation of printed circuit board and other part, pass through present embodiment, can realize the fixed installation of backboard and heating radiator and closely be connected that the while does not influence the installation of other part, because in the present embodiment, nut places the backboard opposite side, can cause inconvenience is installed, so present embodiment, be particularly useful for experimentation in a small amount.
Fig. 5 is backlight embodiment two cross section structure synoptic diagram of the present invention.As shown in Figure 5, different with embodiment one is, base plate 12 is provided with first threaded hole, because base plate 12 is thinner, in the practical application, this first threaded hole is the hole flanging helicitic texture 6 that turns up, and during installation, screw 41 is fixed on the hole flanging helicitic texture 6.
In the present embodiment, do not need the nut among the embodiment, but directly with screw on the hole flanging screw thread, solved among the embodiment one, nut is arranged at installation inconvenience and the slow problem of assembling speed that the backboard opposite side causes, and makes simple installation, again because the hole flanging screw thread that processing is turned up in the present embodiment needs mould, can increase cost during small serial production, so present embodiment, be particularly useful for producing in enormous quantities.
Fig. 6 is backlight embodiment three cross section structure synoptic diagram of the present invention.As shown in Figure 6, have second threaded hole on the substrate 21 of heating radiator, the relevant position on the base plate 12 of backboard has inverted second counter sink, during installation, from the opposite side corresponding with heating radiator of backboard screw 41 is fixed on the threaded hole of heating radiator.
Present embodiment, by installation method with heating radiator and backboard, this vertical installation method from the heating radiator to the backboard, become this installation method from back to front from the backboard to the heating radiator, realized the close installation of heating radiator and backboard, and solved among the inconvenient problem of the installation that needs nut to cause among the embodiment one, the embodiment two and processed the high problem of expense that the screw thread that turns up needs mould to cause, and on heating radiator, processed the demanding problem of counter sink.
Fig. 7 is backlight embodiment four cross section structure synoptic diagram of the present invention.As shown in Figure 7, different with embodiment three is, what open on the base plate 12 is second through hole, and during installation, screw 41 passes second through hole, is fixed on second threaded hole of radiator base plate 21.
Present embodiment, screw places the backboard outside, what adopt is the mode of non-countersunk head upside-down mounting, different with the countersunk head upside-down mounting mode of embodiment three, under the situation of claimed structure compactness, adopt the mode of embodiment three, and not require under the situation of compact conformation, can use the mode of present embodiment, because the processing through hole is easier than the processing counter sink.
Fig. 8 is backlight embodiment five cross section structure synoptic diagram of the present invention.As shown in Figure 8, present embodiment is the inside embedding swivel nut 43 at second threaded hole of embodiment three.
Fig. 9 is backlight embodiment six cross section structure synoptic diagram of the present invention.As shown in Figure 9, present embodiment is the inside embedding swivel nut 43 at second threaded hole of embodiment four.
Embodiment five, six has solved a little less than the screw strength of heating radiator, and the problem of unsuitable repeated disassembled and assembled has realized strength of joint height, and the strong shockproof and shock resistance of backboard and heating radiator.
Also in the foregoing description any two kinds of installation methods in the foregoing description, perhaps multiple array configuration.
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 (11)
1. a backlight is characterized in that, comprising:
Light source is used to produce light backlight;
Heating radiator is connected with described light source, is used to distribute the heat that light source produces;
Backboard is connected with described heating radiator.
2. backlight according to claim 1 is characterized in that, described light source comprises:
The LED light lamp group is used to produce light backlight;
Printed circuit board, one side is welded with described LED light lamp group, and another side is bonding with described heating radiator or be connected by screw retention.
3. backlight according to claim 1 is characterized in that described heating radiator comprises interconnected substrate and fin; Described backboard comprises interconnected sidewall and base plate, and described substrate is fixedlyed connected with base plate.
4. backlight according to claim 3 is characterized in that, has at least one louvre on the described base plate, and described fin passes described louvre.
5. backlight according to claim 4 is characterized in that, the shape of described louvre is the rectangle of chamfering or rounding.
6. backlight according to claim 3 is characterized in that, has first counter sink on the described substrate, have first through hole on the described base plate, described substrate and base plate pass through, and screw passes described first counter sink and is connected with a nut with first through hole, and is fixedly connected.
7. backlight according to claim 3 is characterized in that, has first counter sink on the described substrate, have first threaded hole on the described base plate, described substrate and base plate pass through, and screw passes described first counter sink and is connected on described first threaded hole, and is fixedly connected.
8. backlight according to claim 7 is characterized in that, described threaded hole has outer hole flanging helicitic texture.
9. backlight according to claim 3 is characterized in that, has second counter sink on the described base plate, have second threaded hole on the described substrate, described base plate and substrate pass through, and screw passes described second counter sink and is connected on described second threaded hole, and is fixedly connected.
10. backlight according to claim 3 is characterized in that, has second through hole on the described base plate, have second threaded hole on the described heating radiator, described base plate and substrate pass through, and screw passes described second through hole and is connected on described second threaded hole, and is fixedly connected.
11., it is characterized in that described second threaded hole is embedded with swivel nut according to claim 9 or 10 described backlights.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710176414XA CN100547465C (en) | 2007-10-26 | 2007-10-26 | Backlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710176414XA CN100547465C (en) | 2007-10-26 | 2007-10-26 | Backlight |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101149534A true CN101149534A (en) | 2008-03-26 |
| CN100547465C CN100547465C (en) | 2009-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710176414XA Active CN100547465C (en) | 2007-10-26 | 2007-10-26 | Backlight |
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| Country | Link |
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| CN (1) | CN100547465C (en) |
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| CN101858533A (en) * | 2009-01-29 | 2010-10-13 | 三星电子株式会社 | Backlight assembly |
| CN101943356A (en) * | 2010-07-14 | 2011-01-12 | 深圳市华星光电技术有限公司 | Backlight module and luminous source encapsulation structure thereof |
| CN102318458A (en) * | 2011-07-29 | 2012-01-11 | 华为技术有限公司 | Radiator, electronic apparatus and installation method thereof |
| CN102563459A (en) * | 2011-12-13 | 2012-07-11 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN102588822A (en) * | 2011-01-14 | 2012-07-18 | 三星电子株式会社 | Back light unit and liquid crystal display having the same |
| CN102620253A (en) * | 2011-01-31 | 2012-08-01 | 青岛海信电器股份有限公司 | Backlight source component assembly positioning device and method |
| CN102865503A (en) * | 2012-08-28 | 2013-01-09 | 深圳市华星光电技术有限公司 | Backlight module and radiating device |
| CN102889501A (en) * | 2011-07-20 | 2013-01-23 | 冠捷投资有限公司 | Side-light type backlight module and liquid crystal display |
| WO2013053142A1 (en) * | 2011-10-12 | 2013-04-18 | 深圳市华星光电技术有限公司 | Led backlight module 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 |
| 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 |
| WO2014026428A1 (en) * | 2012-08-17 | 2014-02-20 | 深圳市华星光电技术有限公司 | Back plate component and liquid crystal display |
| WO2014079030A1 (en) * | 2012-11-22 | 2014-05-30 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN104423093A (en) * | 2013-08-30 | 2015-03-18 | 鸿富锦精密工业（深圳）有限公司 | Display device |
| CN107613733A (en) * | 2017-09-30 | 2018-01-19 | 长沙准光里电子科技有限公司 | A kind of communication processing apparatus |
| CN110737129A (en) * | 2018-07-18 | 2020-01-31 | 黄山市展硕半导体科技有限公司 | Production and assembly method of backlight sources |
| CN111542201A (en) * | 2020-04-14 | 2020-08-14 | 珠海格力电器股份有限公司 | Assembly structure and aluminum radiator with same |
-
2007
- 2007-10-26 CN CNB200710176414XA patent/CN100547465C/en active Active
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| CN101858533A (en) * | 2009-01-29 | 2010-10-13 | 三星电子株式会社 | Backlight assembly |
| CN105388667A (en) * | 2009-01-29 | 2016-03-09 | 三星显示有限公司 | Backlight assembly |
| USRE49458E1 (en) | 2009-01-29 | 2023-03-14 | Samsung Display Co., Ltd. | Backlight assembly and display device including the same |
| CN101943356A (en) * | 2010-07-14 | 2011-01-12 | 深圳市华星光电技术有限公司 | Backlight module and luminous source encapsulation structure thereof |
| CN101943356B (en) * | 2010-07-14 | 2013-03-13 | 深圳市华星光电技术有限公司 | Backlight module and luminous source encapsulation structure thereof |
| CN102588822A (en) * | 2011-01-14 | 2012-07-18 | 三星电子株式会社 | Back light unit and liquid crystal display having the same |
| CN102620253B (en) * | 2011-01-31 | 2013-08-07 | 青岛海信电器股份有限公司 | Backlight source component assembly positioning device and method |
| CN102620253A (en) * | 2011-01-31 | 2012-08-01 | 青岛海信电器股份有限公司 | Backlight source component assembly positioning device and method |
| CN102889501A (en) * | 2011-07-20 | 2013-01-23 | 冠捷投资有限公司 | Side-light type backlight module and liquid crystal display |
| CN102318458A (en) * | 2011-07-29 | 2012-01-11 | 华为技术有限公司 | Radiator, electronic apparatus and installation method thereof |
| WO2012109861A1 (en) * | 2011-07-29 | 2012-08-23 | 华为技术有限公司 | Heat sink, electronic device and mounting method thereof |
| WO2013053142A1 (en) * | 2011-10-12 | 2013-04-18 | 深圳市华星光电技术有限公司 | Led backlight module and liquid crystal display device |
| US8593589B2 (en) | 2011-10-12 | 2013-11-26 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | LED back light module and liquid crystal display device |
| 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 |
| CN102563459B (en) * | 2011-12-13 | 2014-06-11 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN102563459A (en) * | 2011-12-13 | 2012-07-11 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| WO2014026428A1 (en) * | 2012-08-17 | 2014-02-20 | 深圳市华星光电技术有限公司 | Back plate component and liquid crystal display |
| US8958027B2 (en) | 2012-08-17 | 2015-02-17 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Backplate assembly and liquid crystal display device using the same |
| CN102865503A (en) * | 2012-08-28 | 2013-01-09 | 深圳市华星光电技术有限公司 | Backlight module and radiating device |
| CN102865503B (en) * | 2012-08-28 | 2015-09-30 | 深圳市华星光电技术有限公司 | Backlight module and heat abstractor |
| WO2014079030A1 (en) * | 2012-11-22 | 2014-05-30 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN104423093A (en) * | 2013-08-30 | 2015-03-18 | 鸿富锦精密工业（深圳）有限公司 | Display device |
| CN107613733A (en) * | 2017-09-30 | 2018-01-19 | 长沙准光里电子科技有限公司 | A kind of communication processing apparatus |
| CN110737129A (en) * | 2018-07-18 | 2020-01-31 | 黄山市展硕半导体科技有限公司 | Production and assembly method of backlight sources |
| CN111542201A (en) * | 2020-04-14 | 2020-08-14 | 珠海格力电器股份有限公司 | Assembly structure and aluminum radiator with same |
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|---|---|
| CN100547465C (en) | 2009-10-07 |
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