CN202769463U - Liquid crystal module backlight assembly - Google Patents

Liquid crystal module backlight assembly Download PDF

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Publication number
CN202769463U
CN202769463U CN2012204701416U CN201220470141U CN202769463U CN 202769463 U CN202769463 U CN 202769463U CN 2012204701416 U CN2012204701416 U CN 2012204701416U CN 201220470141 U CN201220470141 U CN 201220470141U CN 202769463 U CN202769463 U CN 202769463U
Authority
CN
China
Prior art keywords
led lamp
lamp bar
liquid crystal
crystal module
backlight assembly
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
Application number
CN2012204701416U
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Chinese (zh)
Inventor
郭东明
柴岩峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen TCL New Technology Co Ltd
Original Assignee
Shenzhen TCL New Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen TCL New Technology Co Ltd filed Critical Shenzhen TCL New Technology Co Ltd
Priority to CN2012204701416U priority Critical patent/CN202769463U/en
Application granted granted Critical
Publication of CN202769463U publication Critical patent/CN202769463U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

A liquid crystal module backlight assembly comprises a screen back plate, a light-emitting diode (LED) lamp strip, a radiation plate and a front frame. A vertical flange is arranged on the LED lamp strip, the LED lamp strip is fixedly connected on the outer surface of the screen back plate, the radiation plate is fixedly arranged on the outer surfaces of the LED lamp strip and the screen back plate and in close contact with the LED lamp strip and the screen back plate, and the lateral side of the front frame is fixedly connected with the vertical flange of the LED lamp strip. The liquid crystal module backlight assembly can timely transmit heat generated by LED lamps to the radiation plate to be radiated through the radiation layer on the surface of the radiation plate without using graphite flake to carry out uniform temperature and a radiator with fins. The junction temperature of LED is remarkably reduced, product cost is further reduced, the frame thickness of the module is reduced due to a structure that the lateral side of the front frame is fixedly connected with the LED lamp strip, and the purpose of ultra-narrow frame of the liquid crystal module can be achieved.

Description

The liquid crystal module group backlight assembly
Technical field
The utility model relates to technical field of electronic products, relates in particular to a kind of liquid crystal module group backlight assembly.
Background technology
Along with the development of LED technology, the LED lamp is widely applied in the LCD TV as the light source of backlight assembly.The LED LCD TV is also towards ultrathin and super narrow frame future development, and super narrow frame means that light mixing distance backlight reduces, and the LED lamp bank row on the LED lamp bar are comparatively intensive, so that heat flow density increases, has increased the difficulty of heat radiation.
Figure 7 shows that the signal of prior art liquid crystal module group backlight modular construction, its radiator structure adopts aluminium base lamp bar 63 to be fixed on the thick large L-type radiator 62 by bond plies, heat is conducted to large-area screen backboard 61, stick graphite flake 60 at screen backboard 61 simultaneously, will be near screen backboard 61 temperature distribution homogenizations at lamp bar 63 places, avoid liquid-crystalline glasses local heating too high, reduce the module life-span, this structure is because the existence of the thickness of thick large L-type radiator 62 sides and screen backboard 61 sides, cause the module frame blocked up, can't realize super narrow frame.
Therefore, prior art is still waiting to improve.
The utility model content
Main purpose of the present utility model is intended to reduce the LED junction temperature rise for a kind of liquid crystal module group backlight assembly is provided, and improves the radiating efficiency of liquid crystal module group backlight, improves the life-span of product; Reduce the heat radiation cost of backlight module, be convenient to the design of ultra-thin super narrow frame LCD TV.
The utility model proposes a kind of liquid crystal module group backlight assembly, comprise screen backboard, LED lamp bar and heat sink, it is characterized in that, described LED lamp bar is provided with vertical flange, and fixed on described screen backboard outer surface, described heat sink be fixedly installed on the outer surface of described LED lamp bar and described screen backboard and with both close contacts.
As further improvement, an end of described screen backboard overlap joint LED lamp bar arranges the side cut structure, so that LED lamp bar tightly is held in described screen backboard one end.
Described LED lamp bar is fixed to form high, the low structure of screen backboard outer surface of LED lamp bar outer surface at described screen backboard outer surface.
The inner surface that described heat sink contacts described LED lamp bar and described screen backboard outer surface is set to be with ledge structure, forms high, the low structure of screen backboard outer surface of LED lamp bar outer surface so that adaptive described LED lamp bar is fixed at described screen backboard outer surface.
Described heat sink inner surface namely is provided with for the heat conductive silica gel that LED lamp bar heat is transferred on the heat sink with the contacted one side of described LED lamp bar.
Be provided with the three on described LED lamp bar, screen backboard and the heat sink and contact the fixedly screw of usefulness.
Above-mentioned heat sink outer surface is provided with the granular radiating layer for distribute heat.
Described heat sink area covering shields half area of backboard at least.
In order to realize the super narrow frame of liquid crystal module, described liquid crystal module group backlight assembly also comprises front frame, and described front frame side is fixedly connected with the vertical flange of described LED lamp bar.
Compared with prior art, the utility model liquid crystal module group backlight assembly does not arrange graphite flake at the screen backboard to be come the temperature that backlight produces is carried out samming, finned radiator is not set yet, but LED lamp bar and screen backboard overlap joint are being formed high low degree, then cover on the outer surface that is arranged on LED lamp bar and screen backboard by heat sink, the while close contact, and be provided with heat conductive silica gel at heat sink with the face that LED lamp bar contacts, when the LED lamp on the LED lamp bar produces heat, the heat that can be in time the LED lamp be produced is transmitted to that the radiating layer by the heat sink surface distributes on the heat sink, significantly reduced the junction temperature of LED, changed the heat exchange pattern of traditional lamp bar-bond plies-L-type radiator-screen backboard-graphite flake, remove the cost that thick large L-type radiator has further reduced product, the structure that front frame side is fixedly connected with LED lamp bar has reduced the seal ring thickness of module, has reached the purpose of liquid crystal module ultra-narrow frame.
Description of drawings
Fig. 1 is the broken section structural representation of the utility model liquid crystal module group backlight assembly preferred embodiment.
Fig. 2 is the enlarged diagram of A section among Fig. 1.
Fig. 3 is the screen backboard of the utility model liquid crystal module group backlight assembly preferred embodiment and the broken section structural representation of lamp bar.
Fig. 4 is the structural representation of the screen backboard of the utility model liquid crystal module group backlight assembly preferred embodiment.
Fig. 5 is the structural representation of the heat sink of the utility model liquid crystal module group backlight assembly preferred embodiment.
Fig. 6 is the structural representation of the LED lamp bar of the utility model liquid crystal module group backlight assembly preferred embodiment.
Fig. 7 is the broken section structural representation of prior art liquid crystal module group backlight assembly.
The realization of the utility model purpose, functional characteristics and advantage are described further with reference to accompanying drawing in connection with embodiment.
The specific embodiment
Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Fig. 1 is the broken section structural representation of the utility model liquid crystal module group backlight assembly preferred embodiment.Fig. 2 then is the enlarged diagram of A section among Fig. 1.
As depicted in figs. 1 and 2, the utility model liquid crystal module group backlight assembly comprises screen backboard 10, LED lamp bar 20 and heat sink 30, LED lamp bar 20 is provided with vertical flange, and fixed on the outer surface of screen backboard 10,30 of heat sinks be fixedly installed on the outer surface of LED lamp bar 20 and screen backboard 10 and with both close contacts.LED lamp bar 20 is provided with vertical flange and refers to the lamp substrate 21 of LED lamp bar is bent into the substrate that the cross section is L-type, Fig. 6 shows the structural representation of the LED lamp bar of the utility model liquid crystal module group backlight assembly preferred embodiment, as shown in Figure 6, the flange inner surface of this LED lamp bar 20 is provided with LED lamp 22.
Fig. 3 is the screen backboard of the utility model liquid crystal module group backlight assembly preferred embodiment and the broken section structural representation of lamp bar, as shown in Figure 3, the lamp substrate 21 of LED lamp bar 20 is fixed in high, the low structure of screen backboard outer surface of screen backboard 10 outer surfaces formation LED lamp bar outer surface.
Figure 4 shows that the structural representation of the screen backboard of the utility model liquid crystal module group backlight assembly preferred embodiment, in order to make LED lamp bar 20 overlap closely with screen backboard 10, end at screen backboard 10 overlap joint LED lamp bars 20 arranges side cut structure 12, an end that is about to shield backboard 10 is inwardly cut the opening of certain depth, the remaining limit of screen backboard is left in the opening both sides, fixed on the outer surface of screen backboard 10 time when the lamp substrate 21 of LED lamp 20, the side cut structure of screen backboard 10 1 ends can make the tighter end that is held in screen backboard 10 of LED lamp bar 20.
Fig. 5 is the structural representation of the heat sink of the utility model liquid crystal module group backlight assembly preferred embodiment.As shown in Figure 5, for with the adaptive outer surfaces that are installed in LED lamp bar 20 and screen backboard 10 of heat sink 30, at heat sink 30 inner surfaces, namely be provided with ledge structure 31 with LED lamp bar 20 with the one side that screen backboard 10 outer surfaces contacts, with adaptive LED lamp bar 20 fixed screen backboard 10 outer surfaces form LED lamp bar outer surface high, shield the low structure of backboard outer surface.For the heat that produces on the LED lamp bar is transmitted on the heat sink, at the inner surface of heat sink, namely be provided with for the heat conductive silica gel (scheming not shown) that LED lamp bar heat is transferred on the heat sink with described LED lamp bar 20 contacted one sides.After heat sink being installed in the outer surface of LED lamp bar 20 and screen backboard 10, namely form structure illustrated in figures 1 and 2.
Simultaneously, such as Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6, for fixing firm between LED lamp bar, screen backboard and heat sink, be provided with the three at lamp substrate 21, screen backboard 10 and the heat sink 30 of LED lamp bar 20 and contact the fixedly screw of usefulness; The screw screw 11 as shown in Figure 3 that arranges on the screen backboard 10, the screw such as Fig. 3 and the screw 23 shown in Figure 6 that arrange on the lamp substrate 21, the screw screw 32 as shown in Figure 5 that arranges on the heat sink 30.After heat sink being installed in the outer surface of LED lamp bar 20 and screen backboard 10, then can passing through screw 11,23 and 32 three is further fixed, make contact tightr.
It is worth mentioning that because the prior art processes restriction, the vertical flange of LED lamp bar 20 can not be too wide, and is also better for the radiating effect that makes heat sink, can also be provided at the outer surface of above-mentioned heat sink 30 the granular radiating layer of distribute heat.And the area covering of heat sink 30 shields backboard 10 half area at least, and the axis that diffuses to screen backboard 10 with the timely large tracts of land of heat that LED lamp on the LED lamp bar is produced is regional, and another part distributes by the granular radiating layer of heat sink surface spraying.
In order to realize the super narrow frame of liquid crystal module, the utility model liquid crystal module group backlight assembly also comprises the front frame 40 shown in Fig. 1 and Fig. 2, and these front frame 40 sides are fixedly connected with the vertical flange of LED lamp bar 20.Because front frame 40 only realizes that for the super narrow frame of explanation the utility model liquid crystal module principle is used, therefore, the part-structure of frame 40 before in Fig. 1, only illustrating.
The utility model liquid crystal module group backlight assembly forms high low degree with LED lamp bar and screen backboard overlap joint, then cover on the outer surface that is arranged on LED lamp bar and screen backboard by heat sink, the while close contact, and be provided with heat conductive silica gel at heat sink with the face that LED lamp bar contacts, when the LED lamp on the LED lamp bar produces heat, the heat that can be in time the LED lamp be produced is transmitted to that the radiating layer by the heat sink surface distributes on the heat sink, significantly reduced the junction temperature of LED, changed the heat exchange pattern of traditional lamp bar-bond plies-L-type radiator-screen backboard-graphite flake, remove the cost that thick large L-type radiator has further reduced product, the structure that front frame side is fixedly connected with LED lamp bar has reduced the seal ring thickness of module, has reached the purpose of liquid crystal module ultra-narrow frame.
The above only is preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.

Claims (9)

1. liquid crystal module group backlight assembly, comprise screen backboard, LED lamp bar and heat sink, it is characterized in that, described LED lamp bar is provided with vertical flange, and fixed on described screen backboard outer surface, described heat sink be fixedly installed on the outer surface of described LED lamp bar and described screen backboard and with both close contacts.
2. liquid crystal module group backlight assembly according to claim 1 is characterized in that, an end of described screen backboard overlap joint LED lamp bar arranges the side cut structure, so that LED lamp bar tightly is held in described screen backboard one end.
3. liquid crystal module group backlight assembly according to claim 1 is characterized in that, described LED lamp bar is fixed to form high, the low structure of screen backboard outer surface of LED lamp bar outer surface at described screen backboard outer surface.
4. liquid crystal module group backlight assembly according to claim 3, it is characterized in that, the inner surface that described heat sink contacts described LED lamp bar and described screen backboard outer surface is set to be with ledge structure, forms high, the low structure of screen backboard outer surface of LED lamp bar outer surface so that adaptive described LED lamp bar is fixed at described screen backboard outer surface.
5. liquid crystal module group backlight assembly according to claim 4 is characterized in that, described heat sink inner surface namely is provided with for the heat conductive silica gel that LED lamp bar heat is transferred on the heat sink with the contacted one side of described LED lamp bar.
6. liquid crystal module group backlight assembly according to claim 5 is characterized in that, is provided with the three on described LED lamp bar, screen backboard and the heat sink and contacts the fixedly screw of usefulness.
7. according to claim 1 to 6 each described liquid crystal module group backlight assemblies, it is characterized in that described heat sink outer surface is provided with the granular radiating layer for distribute heat.
8. liquid crystal module group backlight assembly according to claim 7 is characterized in that, described heat sink area covering shields half area of backboard at least.
9. liquid crystal module group backlight assembly according to claim 8 is characterized in that, also comprises front frame, and described front frame side is fixedly connected with the vertical flange of described LED lamp bar.
CN2012204701416U 2012-09-14 2012-09-14 Liquid crystal module backlight assembly Expired - Lifetime CN202769463U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012204701416U CN202769463U (en) 2012-09-14 2012-09-14 Liquid crystal module backlight assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012204701416U CN202769463U (en) 2012-09-14 2012-09-14 Liquid crystal module backlight assembly

Publications (1)

Publication Number Publication Date
CN202769463U true CN202769463U (en) 2013-03-06

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Application Number Title Priority Date Filing Date
CN2012204701416U Expired - Lifetime CN202769463U (en) 2012-09-14 2012-09-14 Liquid crystal module backlight assembly

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN107102477A (en) * 2017-06-13 2017-08-29 厦门天马微电子有限公司 LED light bar, backlight module and display device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN107102477A (en) * 2017-06-13 2017-08-29 厦门天马微电子有限公司 LED light bar, backlight module and display device
CN107102477B (en) * 2017-06-13 2020-06-19 厦门天马微电子有限公司 LED lamp strip, backlight unit and display device

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Granted publication date: 20130306