CN202580974U - Backlight module and display equipment - Google Patents
Backlight module and display equipment Download PDFInfo
- Publication number
- CN202580974U CN202580974U CN2012202093238U CN201220209323U CN202580974U CN 202580974 U CN202580974 U CN 202580974U CN 2012202093238 U CN2012202093238 U CN 2012202093238U CN 201220209323 U CN201220209323 U CN 201220209323U CN 202580974 U CN202580974 U CN 202580974U
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- temperature
- plate
- uniforming plate
- heat sink
- heat
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Abstract
The utility model discloses a backlight module and display equipment. The backlight module comprises a back plate, a lamp strip and a temperature equalizing plate, wherein the temperature equalizing plate is in a sealed hollow structure, and a phase-change material is filled in the cavity; the temperature equalizing plate is fixed on the back plate, and the lamp strip is arranged on the temperature equalizing plate. The utility model adopts the characteristic of large specific heat capacity of the phase-change material in the temperature equalizing plate, the heat of the lamp strip is quickly diffused onto the whole temperature equalizing plate, so that the temperature of an LED (Light Emitting Diode) is greatly lowered, on the one hand, part of the heat of the LED is conducted to a metal front frame for outward diffusion by a rubber strip at one side of the temperature equalizing plate, on the other hand, the heat of the LED is also conducted to the radiating plate, the radiating plate radiates part of the heat by the plastic back plate, and finally the temperature of the LED is lowered; and simultaneously due to the adoption of the small-sized combined structure with the radiating plate and the plastic back plate, the cost is reduced.
Description
Technical field
The utility model relates to technical field of electronic products, relates in particular to a kind of module backlight and display device of ultra narrow frame display device.
Background technology
At present, the ultra-thinization design feature of narrow frame LED LCD TV more and more receives market and pursues.But the frame of LED LCD TV is narrow more, means that then light mixing distance backlight is more little; That just needs to increase the LED number on the lamp bar, makes that the LED on the lamp bar arranges very dense, thereby causes the heat flow density of LED very big; Heat is quite concentrated, and heat radiation is difficulty very.
As shown in Figure 1, Fig. 1 is the module sketch map backlight of a kind of narrow frame LED TV of prior art.Existing module backlight comprises: metal backing 100, aluminium base lamp bar 90 and a L type lamp bar heat sink 70; Be provided with bond plies 80 between aluminium base lamp bar 90 and the L type lamp bar heat sink 70; Aluminium base lamp bar 90 is given heat on the L type lamp bar heat sink 70 through bond plies 80 conduction; L type lamp bar heat sink 70 conducts heat to connected metal backing 100, finally through the air on the metal backing 100 of flowing through heat is taken away.
There is following defective in the above-mentioned radiator structure of prior art:
Need to guarantee the thickness of L type lamp bar heat sink 70, could the heat of LED be conducted well that still, the frame that has limited LCD TV so again narrows down to metal backing 100.
The utility model content
The main purpose of the utility model is to provide a kind of module backlight, is intended to reduce the thickness of the frame of light-emitting diode display, reduces heat radiation cost backlight simultaneously.
In order to achieve the above object, the utility model proposes a kind of module backlight, comprising: backboard, lamp bar and temperature-uniforming plate, and said temperature-uniforming plate is used to inject phase-change material for the hollow structure of sealing in its cavity; Said temperature-uniforming plate is fixed on the said backboard, and said lamp bar is installed on the said temperature-uniforming plate.
Preferably, said temperature-uniforming plate comprises the base plate of hollow; The upper surface of said base plate is provided with groove, and said lamp bar is embedded in the said groove, and bonding through the bottom of silica gel and said groove.
Preferably, said temperature-uniforming plate also comprises the side plate vertical with said base plate, and said base plate and side plate make said temperature-uniforming plate form L type structure; Said temperature-uniforming plate is fixed on the said backboard through said side plate.
Preferably, this radiator structure also comprises heat sink, and said heat sink is arranged between the side plate of said backboard and said temperature-uniforming plate, and said temperature-uniforming plate is fixed on the said backboard through said heat sink.
Preferably, the outer surface that the side plate of said temperature-uniforming plate is installed said heat sink is provided with step, and said heat sink is shelved on the said step, and is close to the outer surface of said side plate.
Preferably, bonding between the diapire of said heat sink and the said step through silica gel; Bonding between the sidewall of said heat sink and the outer surface of said side plate through silica gel.
Preferably, also comprise the sidewall butt of the said preceding frame of preceding frame and rubber strip through the base plate of said rubber strip and said temperature-uniforming plate.
Preferably, the two ends of said temperature-uniforming plate are respectively equipped with the plug of the cavity that is used to seal said temperature-uniforming plate.
Preferably, the groove of said temperature-uniforming plate is provided with the injection orifice that is used in its cavity, injecting phase-change material, and said injection orifice passes through silica gel sealing.
The utility model also proposes a kind of display device, comprises aforesaid module backlight.
The module a kind of backlight that the utility model proposes utilizes the characteristic of the big specific heat capacity of phase-change material in the temperature-uniforming plate, and the heat of lamp bar is quickly diffused on the whole temperature-uniforming plate; Significantly reduce the LED temperature, on the one hand, partial L ED heat conducts to metal front frame through the rubber strip of temperature-uniforming plate one side; Distribute through ambient atmosphere; On the other hand, most of heat of LED conducts the heat sink that is connected to the temperature-uniforming plate opposite side, and heat sink distributes the part heat through plastic back plate; Most of heat is then taken away through its surperficial air of flowing through; The final temperature that reduces LED, the structure that adopts undersized heat sink and plastic back plate to make up simultaneously substitutes the radiator structure of traditional aluminium sheet heat sink and the combination of aluminium backboard, reduces cost.
Description of drawings
Fig. 1 is the module sketch map backlight of a kind of narrow frame LED TV of prior art;
Fig. 2 is the structural representation of the utility model module preferred embodiment backlight;
Fig. 3 is an A place structure for amplifying sketch map among Fig. 2;
Fig. 4 is the STRUCTURE DECOMPOSITION sketch map of temperature-uniforming plate in the utility model module preferred embodiment backlight;
Fig. 5 is temperature-uniforming plate and a heat sink mounting structure sketch map in the utility model module preferred embodiment backlight;
Fig. 6 is the structural representation of the utility model module preferred embodiment backlight dorsulum.
Clearer for the technical scheme that makes the utility model, clear, will combine accompanying drawing to do further to detail below.
The specific embodiment
Like Fig. 2 and shown in Figure 3, Fig. 2 is the structural representation of the utility model module preferred embodiment backlight; Fig. 3 is an A place structure for amplifying sketch map among Fig. 2.
The module a kind of backlight that present embodiment proposes, it comprises: metal front frame 3, backboard 7, lamp bar 5, heat sink 2, LGP 1, rubber strip 4 and the temperature-uniforming plate 6 that is used to conduct lamp bar 5 heats, wherein:
Backboard 7 adopts plastic cement material; Metal front frame 3, rubber strip 4, temperature-uniforming plate 6, heat sink 2 and backboard 7 from left to right set gradually, and heat sink 2 is fixed on the backboard 7, and temperature-uniforming plate 6 is fixed on the heat sink 2, transmit heat through rubber strip 4 between metal front frame 3 and the temperature-uniforming plate 6; Lamp bar 5 is arranged on the temperature-uniforming plate 6, and LGP 1 is positioned at the top of said lamp bar 5.
The pcb board that lamp bar 5 comprises LED and is used to install LED; This pcb board is the FR4 PCB structure of multilayer copper foil layer; Pcb board bottom copper foil layer exposes out, and is provided with via hole in LED bottom and next door, like this; Each layer copper foil layer is connected as a single entity through via hole, can fast heat be derived from pcb board.
Particularly, like Fig. 4 and shown in Figure 5, Fig. 4 is the STRUCTURE DECOMPOSITION sketch map of temperature-uniforming plate in the present embodiment; Fig. 5 is temperature-uniforming plate and a heat sink mounting structure sketch map in the present embodiment.
Temperature-uniforming plate 6 is the hollow structure of sealing in the present embodiment, injects phase-change material in its cavity 20.
Temperature-uniforming plate 6 specifically adopts L type structure in the present embodiment; It base plate 61 that comprises hollow and the side plate 62 vertical with this base plate 61; The upper surface of said base plate 61 is provided with groove 40; Said lamp bar 5 is embedded in the said groove 40, and bonding through the bottom of silica gel and said groove 40, and the side plate 62 of temperature-uniforming plate 6 is fixedly connected with heat sink 2.
The outer surface that the side plate 62 of temperature-uniforming plate 6 is installed heat sink 2 in the present embodiment is provided with step 50, and heat sink 2 is shelved on the above-mentioned step 50, and is close to the outer surface of side plate 62.
Bonding between the diapire of heat sink 2 and the said step 50 through silica gel, and bonding between the outer surface of the sidewall of heat sink 2 and side plate 62 through silica gel; The part that the side plate 62 of temperature-uniforming plate 6 is positioned under the said step 50 is a hollow structure.
Be respectively equipped with the plug 30 that is used for sealed cavity 20 at the two ends of said temperature-uniforming plate 6, this plug 30 is consistent with the cross section of temperature-uniforming plate 6 to be the L type, and particularly, the plug 30 at temperature-uniforming plate 6 two ends seals cavity 20 through mechanical pressing mode.
Simultaneously, on the groove 40 of temperature-uniforming plate 6, be provided with the injection orifice 10 that is used in its cavity 20, injecting phase-change material, said injection orifice 10 passes through silica gel sealing.
When mounted, the phase-change material of uniform temperature is injected in the inner cavity 20 of temperature-uniforming plate 6, phase-change material becomes solid under the normal temperature, when lamp bar 5 is installed, with injection orifice 10 through silica gel stifled on.Then temperature-uniforming plate 6 is fixedly connected with heat sink 2; At first that the step on temperature-uniforming plate 6 side plates 62 50 is bonding through the diapire of silica gel and heat sink 2; The part that then temperature-uniforming plate 6 side plates 62 is positioned at step 50 tops is bonding through silica gel with the sidewall of heat sink 2, again through outside screw with of the sidewall locking of temperature-uniforming plate 6 side plates 62 with heat sink 2; Afterwards, heat sink 2 is fixed on the plastic back plate 7 through outside screw again, during display startings such as LED TV; Phase-change material is heated and progressively becomes liquid by solid, because the phase-change material specific heat capacity is high, absorbs the heat that LED produces in a large number; With temperature-uniforming plate 6 surperficial sammings, make effective heat-conducting area of below, lamp bar 5 bottoms, LED place increase, that is to say; Through temperature-uniforming plate 6 surperficial sammings; Make the heat-conducting area of LED not only be confined to the area of LED place lamp bar 5, but the heat-conducting area of LED is belonged to the surface of the enlarged areas of lamp bar 5 to the whole temperature-uniforming plate 6 that is positioned at lamp bar 5 belows by LED, thereby reach the purpose that significantly reduces the LED temperature; Simultaneously, because lamp bar 5 is embedded in the groove 40 in the temperature-uniforming plate 6, the integral thickness after lamp bar 5 makes up with temperature-uniforming plate 6 is less, thereby reaches the purpose that reduces LED TV frame.
In the present embodiment, preceding frame 3 is arranged on the side of the base plate 61 of temperature-uniforming plate 6 away from said side plate 62, and through the sidewall butt of said rubber strip 4 with the base plate 61 of temperature-uniforming plate 6, promptly rubber strip 4 is arranged between the left side and metal front frame 3 of temperature-uniforming plate 6.Rubber strip 4 can conduct lamp bar 5 part heats to metal front frame 3, and distribute through ambient atmosphere as the heat-conducting medium between temperature-uniforming plate 6 and the metal front frame 3.
In addition, as shown in Figure 6, the plastic back plate 7 of present embodiment offers air vent 60, makes heat sink 2 parts be exposed in the external environment air, and most of heat is taken away on outside air heat sink 2 surfaces of flowing through.
The radiating principle of present embodiment backing structure is:
Present embodiment utilizes the characteristic of the big specific heat capacity of phase-change material in temperature-uniforming plate 6 cavitys 20, and the heat of lamp bar 5 is quickly diffused on the whole temperature-uniforming plate 6, significantly reduces the LED temperature; On the one hand; The heat of partial L ED is given metal front frame 3 through rubber strip 4 conduction in temperature-uniforming plate 6 left sides, distributes through ambient atmosphere, and most of heat of LED conducts the heat sink 2 that is connected to temperature-uniforming plate 6 right sides on the other hand; Heat sink 2 distributes the part heat through plastic back plate 7, finally reduce the temperature of LED; Simultaneously, present embodiment adopts heat sink 2 and plastic back plate 7 combining structures to substitute traditional aluminium sheet heat sink 2 and the radiator structure that aluminium backboard 7 makes up, and has reduced cost.
Need to prove that in other embodiments, temperature-uniforming plate 6 also can not adopt L type structure, also can need not heat sink 2 is set, and the heat radiation that directly realizes LED through temperature-uniforming plate 6.
In addition, the utility model also proposes a kind of display device, and this display device comprises the module backlight of the foregoing description, and its internal structure and functional characteristics repeat no more at this please with reference to the foregoing description.
The above is merely the preferred embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure or flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical field, all in like manner be included in the scope of patent protection of the utility model.
Claims (10)
1. module backlight comprises: backboard and lamp bar is characterized in that also comprise temperature-uniforming plate, said temperature-uniforming plate is the hollow structure of sealing, injects phase-change material in its cavity;
Said temperature-uniforming plate is fixed on the said backboard, and said lamp bar is installed on the said temperature-uniforming plate.
2. module backlight according to claim 1 is characterized in that said temperature-uniforming plate comprises the base plate of hollow;
The upper surface of said base plate is provided with groove, and said lamp bar is embedded in the said groove, and bonding through the bottom of silica gel and said groove.
3. module backlight according to claim 2 is characterized in that, said temperature-uniforming plate also comprises the side plate vertical with said base plate, and said base plate and side plate make said temperature-uniforming plate form L type structure; Said temperature-uniforming plate is fixed on the said backboard through said side plate.
4. module backlight according to claim 3 is characterized in that, also comprises heat sink, and said heat sink is arranged between the side plate of said backboard and said temperature-uniforming plate, and said temperature-uniforming plate is fixed on the said backboard through said heat sink.
5. module backlight according to claim 4 is characterized in that the outer surface that the side plate of said temperature-uniforming plate is installed said heat sink is provided with step, and said heat sink is shelved on the said step, and is close to the outer surface of said side plate.
6. module backlight according to claim 5 is characterized in that, and is bonding through silica gel between the diapire of said heat sink and the said step; Bonding between the sidewall of said heat sink and the outer surface of said side plate through silica gel.
7. according to each described module backlight among the claim 3-6, it is characterized in that, frame and rubber strip before also comprising, said preceding frame is through the sidewall butt of the base plate of said rubber strip and said temperature-uniforming plate.
8. module backlight according to claim 7 is characterized in that, the two ends of said temperature-uniforming plate are respectively equipped with the plug of the cavity that is used to seal said temperature-uniforming plate.
9. module backlight according to claim 7 is characterized in that, the groove of said temperature-uniforming plate is provided with the injection orifice that is used in its cavity, injecting phase-change material, and said injection orifice passes through silica gel sealing.
10. a display device is characterized in that, comprises each described module backlight among the claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202093238U CN202580974U (en) | 2012-05-10 | 2012-05-10 | Backlight module and display equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202093238U CN202580974U (en) | 2012-05-10 | 2012-05-10 | Backlight module and display equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202580974U true CN202580974U (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202093238U Expired - Lifetime CN202580974U (en) | 2012-05-10 | 2012-05-10 | Backlight module and display equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202580974U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015062118A1 (en) * | 2013-10-31 | 2015-05-07 | 深圳市华星光电技术有限公司 | Heat-conducting apparatus, backlight module, and liquid crystal display |
| CN106773291A (en) * | 2016-12-19 | 2017-05-31 | 深圳市华星光电技术有限公司 | Backlight module and display |
| CN107027271A (en) * | 2017-04-28 | 2017-08-08 | 深圳市华星光电技术有限公司 | Liquid crystal display television cooling system and LCD TV |
-
2012
- 2012-05-10 CN CN2012202093238U patent/CN202580974U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015062118A1 (en) * | 2013-10-31 | 2015-05-07 | 深圳市华星光电技术有限公司 | Heat-conducting apparatus, backlight module, and liquid crystal display |
| CN106773291A (en) * | 2016-12-19 | 2017-05-31 | 深圳市华星光电技术有限公司 | Backlight module and display |
| CN107027271A (en) * | 2017-04-28 | 2017-08-08 | 深圳市华星光电技术有限公司 | Liquid crystal display television cooling system and LCD TV |
| CN107027271B (en) * | 2017-04-28 | 2019-04-30 | 深圳市华星光电技术有限公司 | Liquid crystal display television cooling system and LCD TV |
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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: 20121205 |