CN201097047Y - Backlight module assembly and LCD - Google Patents
Backlight module assembly and LCD Download PDFInfo
- Publication number
- CN201097047Y CN201097047Y CNU2007201219952U2007201219952U CN200720121995U CN201097047Y CN 201097047 Y CN201097047 Y CN 201097047Y CN U2007201219952U2007201219952 U CNU2007201219952U2007201219952 U CN U2007201219952U2007201219952U CN 200720121995 U CN200720121995 U CN 200720121995U CN 201097047 Y CN201097047 Y CN 201097047Y
- Authority
- CN
- China
- Prior art keywords
- base plate
- projected parts
- strip projected
- module backlight
- light source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The utility model discloses a back light module, and a liquid crystal display device which adopts the back light module. The back light module comprises a light source and a back board. The light source comprises a reflecting cover. The back board comprises a bottom board contacted with the reflecting cover. The bottom board comprises a plurality of strip-shaped salience structures, and the strip-shaped salience structures are propped against the reflecting cover. The back light module and the liquid crystal display device have the advantages of better heat emission effect and smaller volume.
Description
Technical field
The utility model relates to a kind of module backlight and the liquid crystal indicator that adopts this module backlight.
Background technology
At present, because of liquid crystal indicator (Liquid Crystal Display, LCD) have characteristics such as light, thin, so replace conventional cathode ray tube (the Cathode Ray Tube that is used for computer just gradually, CRT) display device, and be widely used in personal digital assistant (Personal Digital Assistant, PDA), LCD TV and other multiple audio-visual equipment.
Seeing also Fig. 1, is a kind of structural representation of prior art liquid crystal indicator.This liquid crystal indicator 10 comprises that a display panels 110 and provides the module backlight 100 of planar light for this display panels 110.
This module 100 backlight comprises an optical diaphragm group 120, a light guide plate 130, a light source 140, a reflector plate 150, a framework 160 and a backboard 170.But this framework 160 and these backboard 170 actings in conjunction are to accommodate and to fix this optical diaphragm group 120, this light guide plate 130, this light source 140 and this reflector plate 150.
This light guide plate 130 comprises two incidence surfaces that are oppositely arranged 131, an exiting surface 132 that links to each other with this incidence surface 131 and one and these exiting surface 132 opposed bottom surface 133.This light source 140 comprises a fluorescent tube 141 and a lampshade 142, this lampshade 142 is that an xsect is the framed structure of U-shaped, its have one the light-emitting window (indicating) of the light outgoing that this fluorescent tube 141 sent and two are linked to each other with this light-emitting window and with the electrode corresponding opening (sign) of this fluorescent tube 141.This framework 160 is a rectangular hollow glue frame, and it comprises end to end a plurality of side 161, a plurality of sidewalls 162 that extend from the edge of these a plurality of sides 161 respectively and a plurality of grabs 163 that extend from these a plurality of sidewalls 162.This backboard 170 is a thermal conductive metallic material, it comprises the rectangular base plate 171 of a tool flat surface, these base plate 171 edges extend upward two opposing sidewalls 172 and a plurality of draw-in grooves 173 that are arranged on this sidewall 172 of formation certainly, and this draw-in groove 173 is corresponding with the grab 163 on this framework 160.
Please in the lump with reference to Fig. 2 and Fig. 3, Fig. 2 is the structural representation after module backlight 100 assemblings shown in Figure 1.Fig. 3 is the schematic cross-section of this module 100 backlight along the III-III line.This backboard 170 is fixed by this draw-in groove 173 and the mutual snap action of this grab 163 with this framework 160, and forms a receiving space (figure does not show).This light guide plate 130 is contained in the receiving space of this framework 160 and 170 formation of this backboard, and the base plate 171 of its bottom surface 133 adjacent these backboards 170.This reflector plate 150 is arranged between this bottom surface 133 and this base plate 171, and adhere well on this bottom surface 133, reflects the light that this light source 140 is mapped to this bottom surface 133.The light-emitting window of this lampshade 142 is over against the incidence surface 131 of this light guide plate 130, and a side of its framed structure partly contacts with the avris of these base plate 171 contiguous these light sources 140, and this lampshade 142 is gone back the part of these reflector plate 150 these light sources 140 of vicinity of clamping simultaneously.This fluorescent tube 141 is contained in this lampshade 142, and its light that sends part directly enters this light guide plate 130 through this incidence surface 131, and part reflects after the light-emitting window of this lampshade 142 enters this light guide plate 130 through this lampshade 142.This optical diaphragm group 120 is arranged at the exiting surface 132 of this light guide plate 130, and it generally includes diffusion sheet and blast sheet.
The avris part of being close to these light sources 140 because of this base plate 171 contacts with these lampshade 142 1 sides, therefore, this module 100 backlight is when work, the heat that this fluorescent tube 141 produces can conduct to the avris part of these base plate 171 contiguous these light sources 140 by these lampshade 142 1 sides, yet the most of heat in back is directly distributed to the external world by the avris part of these base plate 171 contiguous these light sources, the fraction heat is distributed to the external world by the center section of this base plate 171 in addition, reducing the temperature at these fluorescent tube 141 places, thereby prolong the serviceable life of this fluorescent tube 141.
Yet, one side of this lampshade 142 contacts with the part base plate 171 of backboard 170, most of heat that this fluorescent tube 141 distributes is only distributed to the external world by the avris part of these base plate 171 contiguous these light sources 140, and the center section of base plate 171 only can distribute the fraction heat, so just make base plate 171 area of dissipations of metal material less, and then cause these module 100 radiating effects backlight relatively poor.For this kind situation, industry deviates from these light source 140 1 sides at this base plate 171 usually increases radiating fin with the raising radiating efficiency, yet this measure causes the volume of module 100 backlight to increase usually.
The utility model content
In order to solve the problem that prior art module heat radiation backlight is relatively poor, volume is bigger, be necessary to provide the module backlight that a kind of radiating effect is better, volume is less.
In order to solve the problem that the heat radiation of prior art liquid crystal indicator is relatively poor, volume is bigger, also be necessary to provide the liquid crystal indicator that a kind of radiating effect is better, volume is less.
A kind of module backlight, it comprises a light source and a base plate.This light source comprises a reflex housing, and this base plate contacts with this reflex housing.This base plate comprises a plurality of strip projected parts structures, and this strip projected parts structure and this reflex housing connect.
A kind of module backlight, it comprises a light source and a backboard.This light source comprises a reflex housing.This backboard comprise one with the contacted base plate of this reflex housing.This base plate comprises a plurality of strip projected parts structures, and the part that this strip projected parts structure makes this base plate contact this reflex housing produces cross-ventilation with these base plate other parts.
A kind of liquid crystal indicator, it comprises that a display panels and provides the module backlight of planar light for this liquid crystal panel.This module backlight comprises an at least one light source and a base plate.This light source comprises a reflex housing, and this base plate contacts with this reflex housing.This base plate comprises multiple strip projected parts structure, and this strip projected parts structure and this reflex housing connect.
A kind of liquid crystal indicator, it comprises that a display panels and provides the module backlight of planar light for this liquid crystal panel.This module backlight comprises a light source and a backboard.This light source comprises a reflex housing.This backboard comprise one with the contacted base plate of this reflex housing.This base plate comprises a plurality of strip projected parts structures, and the part that this strip projected parts structure makes this base plate contact this reflex housing produces cross-ventilation with these base plate other parts.
In the module backlight of the present utility model, this base plate is provided with a plurality of strip projected parts structures, and this strip projected parts structure and this reflex housing connect.The heat that this light source produces makes this base plate contact the portion temperature height of this light source reflecting housing, and the other parts temperature of base plate is low, cause the air in the groove between adjacent two strip projected parts to form convection current, the heat that makes this base plate contact this Lights section is convenient to the other parts transmission to base plate, and whole like this base plate all can carry out high efficiency heat radiation to this module backlight.Simultaneously, the strip projected parts structure of this base plate has also increased the area of base plate, further helps this module heat radiation backlight.This base plate is provided with the strip projected parts structure and dispels the heat, and makes this module backlight need not additionally to be provided with radiator structures such as radiating fin, and therefore, the volume of this module backlight is less.
Adopt the liquid crystal indicator of the utility model module backlight, preferable because of the radiating effect of this module backlight, and volume is less, and therefore, the radiating effect of liquid crystal indicator is preferable, and volume is less.
Description of drawings
Fig. 1 is a kind of structural representation of prior art liquid crystal indicator.
Fig. 2 is the structural representation after the module assembling backlight shown in Figure 1.
Fig. 3 is the schematic cross-section of module backlight shown in Figure 2 along the III-III line.
Fig. 4 is the structural representation of the utility model liquid crystal indicator one better embodiment.
Fig. 5 is the enlarged diagram of strip projected parts on the base plate shown in Figure 4.
Fig. 6 is the structural representation after the module assembling backlight shown in Figure 4.
Fig. 7 is the schematic cross-section of module backlight shown in Figure 6 along the VII-VII line.
Embodiment
Seeing also Fig. 4, is the structural representation of the utility model liquid crystal indicator one better embodiment.This liquid crystal indicator 20 comprises that a display panels 210 and provides the module backlight 200 of planar light for this liquid crystal panel 210.
This module 200 backlight comprises an optical diaphragm group 220, a light guide plate 230, two light sources 240, a reflector plate 250, a framework 260 and a backboard 270.This optical diaphragm group 220, this light guide plate 230, this light source 240 and this reflector plate 250 are accommodated and fixed to this framework 260 in the lump with this backboard 270.
This light guide plate 230 comprises exiting surface 232 that two relative incidence surfaces 231, all link to each other with two incidence surfaces 231 and one and these exiting surface 232 opposed bottom surface 233.
This light source 240 comprises that a fluorescent tube 241 and accommodates the reflex housing 242 of this fluorescent tube 241, this reflex housing 242 is that xsect is the framed structure of U-shaped, its have that the light-emitting window (indicating) of the light outgoing that can be sent for this fluorescent tube 241 and two link to each other with this light-emitting window and with the electrode corresponding opening (sign) of this fluorescent tube 241.
This framework 260 is a rectangular hollow glue frame, and it comprises a plurality of sides 261, a plurality of sidewall 262 and a plurality of grabs 263.These a plurality of sidewalls 262 extend to form from the edge-perpendicular of these a plurality of sides 261; These a plurality of grabs 263 are arranged at the outside of these a plurality of sidewalls 262.
This backboard 270 is a rectangle framework, and it base plate 271, two that comprises a rectangle is relatively and from side plate 272 and a plurality of draw-in grooves 273 that are arranged on this side plate 272 that underframe 271 edge-perpendicular extend upward.A plurality of grabs 263 corresponding settings of these a plurality of draw-in grooves 273 and this framework 260.Comprise a plurality of strip projected parts structures 275 of traversing whole base plate 271 on this base plate 271, it is arranged parallel to each other.Each strip projected parts structure 275 integral body linearly, itself and this biside plate 272 vertical connections.This strip projected parts structure 275 normally forms by mechanical compaction on this base plate 271.
Seeing also Fig. 5, is the enlarged diagram of strip projected parts structure 275 on this base plate 271.This strip projected parts structure 275 is protruded to light source 240 1 sides of this module 200 backlight, and its cross section is an isosceles trapezoidal structure.Wherein, the upper base length of this isosceles trapezium structure is 0.6 times of length of going to the bottom, and trapezoidal waist length is 0.3 times of length of going to the bottom.The strip projected parts 275 of said structure can increase the area of this base plate 271, takes into account this base plate 271 simultaneously and reaches certain mechanical strength.Two adjacent strip projected parts structures 275 and 271 definition one of part base plate therebetween are full of the strip groove structure (indicating) of air, and its xsect also is a trapezium structure.Each strip groove structure forms one from the space with reflex housing 242 contiguous these base plate 271 1 sides of this light source 240.
See also Fig. 6 and Fig. 7, Fig. 6 is the structural representation after these module 200 assemblings backlight.Fig. 7 is the schematic cross-section of this module 200 backlight along the VII-VII line.This framework 260 fastens by the draw-in groove 273 of its grab 263 with this backboard 270, and forms a receiving space (figure does not show).This light guide plate 230 is contained in this receiving space, the base plate 271 of its bottom surface 233 adjacent these backboards 270, and its incidence surface 231 is relative with the side plate 272 of this backboard 270.This reflector plate 250 between the bottom surface 233 and this base plate 271 of this light guide plate 230, and and this base plate 271 between tool one narrow space (indicate).The incidence surface 231 of these reflex housing 242 adjacent these light guide plate 230, its light-emitting window is over against this incidence surface 231, the light that this fluorescent tube 241 sends directly enters or enters this light guide plate 230 through these reflex housing 242 reflections, simultaneously, these reflex housing 242 contiguous these base plate 271 1 sides also contact with each strip projected parts structure 275.This optical diaphragm group 220 is arranged at the exiting surface 232 of this light guide plate 230, and together is contained in the receiving space of this framework 260 and 270 formation of this backboard with this light source 240 with this light guide plate 230, this reflector plate 250.
In this module 200 backlight, base plate 271 avris of this backboard 270 contact with reflex housing 242 1 sides of this light source 240, the heat that this fluorescent tube 241 sends transfers to this base plate 271 avris by these reflex housing 242 1 sides, and the avris that makes these base plate 271 close these light sources 240 is partly than the center section temperature height of this base plate 271 away from this light source 240.Owing on this base plate 271 a plurality of strip projected parts structures 275 are set, the strip groove inside configuration of 275 definition of adjacent two strip projected parts structures is full of air, this base plate 271 is higher near the avris portion temperature of this light source 240, center section temperature away from this light source 240 is low, make the air themperature height of this strip groove inside configuration near this light source 240, and low, and then make the air of this strip groove inside have temperature difference formation cross-ventilation away from the part air themperature of this light source 240.Cross-ventilation makes the heat of this base plate 271 avris part rapidly to these base plate 271 center section transmission, and then makes whole base plate 271 all can carry out high efficiency heat radiation.Simultaneously, owing to have strip projected parts structure 275 on the base plate 271, make the area of base plate 271 bigger, thereby make the area of dissipation of this module 200 backlight also bigger.
This module 200 backlight is by being provided with these a plurality of strip projected parts structures 275, the strip groove structure of 275 definition of adjacent two strip projected parts structures is utilized the convection current between the different temperatures air on the one hand, make whole base plate 271 all can carry out high efficiency heat radiation, area of dissipation is bigger; The setting of a plurality of on the other hand strip projected parts structures 275 makes these base plate 271 areas bigger, has further enlarged area of dissipation, thereby, these module 200 good heat dissipation effect backlight.Simultaneously, because the heat radiation of this module 200 backlight need not at its outside extra radiating fin that increases, therefore, its volume is less.
The utility model is not limited in above-mentioned strip projected parts structure, and strip projected parts not only is a straight line, also can be curve, and its cross section not only is a trapezium structure, can also be other arbitrary polygon or arc, as rectangle, semicircle, half elliptic etc.Strip projected parts structure on the base plate also can support or oppose, and to deviate from light source one side-prominent for the optical mode group.
Claims (9)
1. module backlight, it comprises: a light source and a backboard, this light source comprises a reflex housing; This backboard comprise one with the contacted base plate of this reflex housing, it is characterized in that: this base plate comprises a plurality of strip projected parts structures, this strip projected parts structure and this reflex housing connect.
2. module backlight as claimed in claim 1 is characterized in that: this backboard also comprises the biside plate vertical with this base plate, this strip projected parts structure and this side plate vertical connection.
3. module backlight as claimed in claim 1 is characterized in that: this strip projected parts structure is traversed whole base plate and is parallel to each other.
4. module backlight as claimed in claim 1 is characterized in that: the xsect of this strip projected parts structure is an isosceles trapezoid, and the trapezoidal upper base length of these isosceles is 0.6 times of length of going to the bottom, and the trapezoidal waist length of these isosceles is 0.3 times of length of going to the bottom.
5. module backlight, it comprises: a light source and a backboard, this light source comprises a reflex housing; This backboard comprise one with the contacted base plate of this reflex housing, it is characterized in that: this base plate comprises a plurality of strip projected parts structures, part and this base plate other parts that this strip projected parts structure makes this base plate contact this reflex housing produce cross-ventilation.
6. module backlight as claimed in claim 5 is characterized in that: this backboard also comprises the biside plate vertical with this base plate, this strip projected parts structure and this side plate vertical connection.
7. module backlight as claimed in claim 5 is characterized in that: this strip projected parts structure is traversed whole base plate and is parallel to each other.
8. module backlight as claimed in claim 5 is characterized in that: the cross section of this strip projected parts structure is an isosceles trapezoid, and the trapezoidal upper base length of these isosceles is 0.6 times of length of going to the bottom, and the trapezoidal waist length of these isosceles is 0.3 times of length of going to the bottom.
9. liquid crystal indicator, it comprises a liquid crystal panel and for this liquid crystal panel provides the module backlight of planar light, it is characterized in that: this module backlight is any described module backlight in the claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201219952U2007201219952U CN201097047Y (en) | 2007-08-08 | 2007-08-08 | Backlight module assembly and LCD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201219952U2007201219952U CN201097047Y (en) | 2007-08-08 | 2007-08-08 | Backlight module assembly and LCD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201097047Y true CN201097047Y (en) | 2008-08-06 |
Family
ID=39924099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201219952U2007201219952U Expired - Lifetime CN201097047Y (en) | 2007-08-08 | 2007-08-08 | Backlight module assembly and LCD |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201097047Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104728683A (en) * | 2015-04-14 | 2015-06-24 | 京东方科技集团股份有限公司 | Integrated backlight source structure and liquid crystal display device |
| CN107153302A (en) * | 2017-06-27 | 2017-09-12 | 上海传英信息技术有限公司 | The preparation method of reflector plate, backlight module and reflector plate |
-
2007
- 2007-08-08 CN CNU2007201219952U2007201219952U patent/CN201097047Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104728683A (en) * | 2015-04-14 | 2015-06-24 | 京东方科技集团股份有限公司 | Integrated backlight source structure and liquid crystal display device |
| CN107153302A (en) * | 2017-06-27 | 2017-09-12 | 上海传英信息技术有限公司 | The preparation method of reflector plate, backlight module and reflector plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080806 |