CN102352981B - Backlight module - Google Patents

Backlight module Download PDF

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Publication number
CN102352981B
CN102352981B CN201110216968.4A CN201110216968A CN102352981B CN 102352981 B CN102352981 B CN 102352981B CN 201110216968 A CN201110216968 A CN 201110216968A CN 102352981 B CN102352981 B CN 102352981B
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CN
China
Prior art keywords
light
light source
cavity
support
condensation end
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 - Fee Related
Application number
CN201110216968.4A
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Chinese (zh)
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CN102352981A (en
Inventor
江和兴
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AU Optronics Corp
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AU Optronics Corp
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Filing date
Publication date
Priority to TW100106935A priority Critical patent/TWI432849B/en
Priority to TW100106935 priority
Application filed by AU Optronics Corp filed Critical AU Optronics Corp
Publication of CN102352981A publication Critical patent/CN102352981A/en
Application granted granted Critical
Publication of CN102352981B publication Critical patent/CN102352981B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

A kind of backlight module, comprises the support with cavity, is arranged at the light source on support, be formed at the microtriche fine texture of cavity surface, and be positioned at the fluid among cavity.

Description

Backlight module
Technical field
The invention relates to a kind of backlight module, and relate to a kind of radiator structure of backlight module especially.
Background technology
Liquid crystal display (LiquidCrystalDisplay; LCD) have that high image quality, volume are little, lightweight, the advantage such as low voltage drive, low consumpting power and applied range, therefore be widely used in Portable TV, mobile phone, shoot with video-corder in the consumer electronics such as projector, notebook computer and desktop displays or computer product, become the main flow of display.
Liquid crystal display mainly includes the assemblies such as liquid crystal panel, backlight module and framework.Backlight module, in order to provide light source, mainly includes the elements such as light source, light guide plate, support.Liquid crystal panel and backlight module are assembled among framework again.
Light source is pyrotoxin main in backlight module, and mostly existing thermally conductive pathways is thermoluminescence diode to be passed to support via circuit board, and support carries out heat interchange to reach the object of heat radiation with the air in the external world again.But this kind of radiating mode due to thermally conductive pathways longer, thermal resistance is higher, easily makes heat radiation uneven and has the situation of hot localised points to produce, thus causing light guide plate deflection deformation.
Therefore, how evenly and efficiently radiating backlight module, just becomes an important problem.
Summary of the invention
Therefore object of the present invention is exactly providing a kind of backlight module with radiator structure, in order to solve the situation that light guide plate bends because being heated inequality.
According to one embodiment of the invention, propose a kind of backlight module, comprise the support with cavity, be arranged at the light source on support, be formed at the microtriche fine texture of cavity surface, and be positioned at the fluid among cavity.The kink that support can have bottom and be connected with bottom, light source is positioned on bottom or on kink.Or support comprises bottom, kink and extension, light source is positioned on bottom, and kink and extension lay respectively at two bottom sides.Or support comprises bottom, kink is positioned on bottom with back of the body cap, light source, and kink connects the one side of bottom, and back of the body cap connects the another side of bottom.Backlight module more comprises reflector plate and light guide plate, and reflector plate and light guide plate are arranged at carries on the back on cap.Microtriche fine texture can be very low power, sintering metal particle or wire netting.
Another aspect of the present invention is a kind of backlight module, comprises support, light source and light guide plate.Support has bottom and kink, and kink is connected to form accommodation space with bottom.Support has cavity, and cavity is positioned at bottom and kink.Light source is positioned at accommodation space, and the part system of its cavity is positioned at the top of light source.Light source system is positioned at the side of light guide plate.Support can have more extension and is connected with bottom and is not connected with kink, and light guide plate is positioned on extension.Backlight module more comprises microtriche fine texture, is formed at cavity surface.Backlight module more comprises fluid, and fluid is positioned among cavity.
The present invention can reach the effect of circulation cooling effectively by the conversion of the fluid in cavity between vapour phase and liquid phase, the heat that light source is produced can evenly and be removed efficiently, avoid the generation of hot localised points, and then the situation that solution light guide plate bends because being heated inequality.
Accompanying drawing explanation
For above and other object of the present invention, feature, advantage and embodiment can be become apparent, being described in detail as follows of institute's accompanying drawings:
Fig. 1 is the part sectioned view of backlight module first embodiment of the present invention.
Fig. 2 is the part sectioned view of backlight module second embodiment of the present invention.
Fig. 3 is the part sectioned view of backlight module of the present invention 3rd embodiment.
Fig. 4 is the part sectioned view of backlight module of the present invention 4th embodiment.
Fig. 5 is the sectional view at another visual angle of backlight module first embodiment of the present invention.
[description of reference numerals]
Embodiment
Below will clearly demonstrate spirit of the present invention with drawings and Examples; those skilled in the art belonging to any are after understanding preferred embodiment of the present invention; the technology can instructed by the present invention, is changed and modifies, and it does not depart from spirit of the present invention and protection domain.
With reference to Fig. 1, it is the part sectioned view illustrating backlight module first embodiment of the present invention.Include support 110 in backlight module 100, be arranged at the light source 120 on support 110, and be positioned at the light guide plate 130 of light source 120 side.Support 110 has cavity 112, and cavity 112 is the inside of through whole support 110.Backlight module 100 more comprises the microtriche fine texture 140 being formed in cavity 112 inside surface, and is positioned at the fluid 150 among cavity 112.
Support 110 is a ㄈ character form structure, its kink 116 including bottom 114 and be connected with bottom 114.Kink 116 is bordering on L shape structure, and one end of kink 116 is connected with bottom 114, and to form an accommodation space, light source 120 is arranged in this accommodation space.Cavity 112 is distributed among support 110, and through bottom 114 and kink 116.Light source 120 is arranged on bottom 114, and a part for cavity 112 is positioned at above light source 120.Light source 120 includes circuit board 122 and light-emittingdiode 124, and circuit board 122 is fixed on the bottom 114 of support 110, and light-emittingdiode 124 to be arranged on circuit board 122 and to be electrically connected with circuit board 122.Light guide plate 130 is positioned at the side of light source 120.Microtriche fine texture 140 can be very low power, sintering metal particle or wire netting.
Because light source 120 can produce a large amount of heats when luminescence, if cannot immediately be taken away by these heats, luminescence efficiency and the life-span of light source 120 will be affected, and have the situation of hot localised points to produce, thus cause light guide plate 130 deflection deformation.The object of heat radiation can be reached by microtriche fine texture 140 and fluid 150 in the backlight module 100 of the present embodiment.
The material of support 110 is preferably for having high heat conducting metal.Inner air can be got rid of at injection fluid 150 by cavity 112, to reach certain vacuum degree, makes cavity 112 inside reach liquid gas-liquid equilibrium.When fluid 150 is heated at the heat source side place of corresponding light source 120, can be vaporized into fast as steam, simultaneously because the steam pressure of heat source side (i.e. the place of contiguous light source 120) is higher than condensation end (namely away from light source 120 and the place be positioned at above light source 120), therefore the steam that fluid 150 is vaporized into will flow to condensation end rapidly, when steam arrives condensation end, the fluid 150 that regelation becomes liquid is understood because of fault offset, the fluid 150 of condensation is taken back heat source side by the capillary force that the microtriche fine texture 140 on recycling cavity 112 surface produces, thus the mobile equilibrium of liquid-gas phase transition can be formed in cavity 112 inside of support 110, rely on the continuous phase transition circulation of fluid 150, the heat source side of heat energy from light source 120 can be passed by support 110.
Aforesaid heat source side is the position of the light-emittingdiode 124 corresponding to light source 120 in support 110, and condensation end can be kink 116 or between the light-emittingdiode 124 at interval, in other words, fluid 150 can for outwards to evapotranspire to dispel the heat radially centered by light-emittingdiode 124.
With reference to Fig. 2, it is the part sectioned view illustrating backlight module second embodiment of the present invention.Include support 110 in backlight module 100, be arranged at the light source 120 on support 110, and be positioned at the light guide plate 130 of light source 120 side.Support 110 has cavity 112, and cavity 112 is the inside of through whole support 110.Backlight module 100 more comprises the microtriche fine texture 140 being formed in cavity 112 inside surface, and is positioned at the fluid 150 among cavity 112.
Support 110 is a ㄈ character form structure, its kink 116 including bottom 114 and be connected with bottom 114, and form an accommodation space between kink 116 and bottom 114, light source 120 is arranged in this accommodation space.Cavity 112 is distributed among support 110, and through bottom 114 and kink 116.Kink 116 includes end face 115 and side 117, and end face 115 is connected with side 117 to be made kink 116 become to be bordering on L shape structure, and one end of side 117 is connected with bottom 114.Light source 120 is arranged on the opposite face of side 117, light source 120 includes circuit board 122 and light-emittingdiode 124, circuit board 122 is fixed on the opposite face of side 117 of support 110, and light-emittingdiode 124 to be arranged on circuit board 122 and to be electrically connected with circuit board 122.A part for cavity 112 is positioned at above light source 120.Light guide plate 130 is positioned at the side of light source 120.Microtriche fine texture 140 can be very low power, sintering metal particle or wire netting.
After the fluid 150 in cavity 112 absorbs the heat that light-emittingdiode 124 sends, gas can be vaporizated into and to condensation end dissipation, then again be condensed into liquid fluid 150 at condensation end, and get back to heat source side through the capillary action of microtriche fine texture 140, to reach effect of circulation cooling.
With reference to Fig. 3, it is the part sectioned view illustrating backlight module of the present invention 3rd embodiment.Include support 110 in backlight module 100, be arranged at the light source 120 on support 110, and be positioned at the light guide plate 130 of light source 120 side.Support 110 has cavity 112, and cavity 112 is the inside of through whole support 110.Backlight module 100 more comprises the microtriche fine texture 140 being formed in cavity 112 inside surface, and is positioned at the fluid 150 among cavity 112.
Support 110 comprises bottom 114, kink 116 and extension 118.Cavity 112 is distributed among support 110, and through bottom 114, kink 116 and extension 118.Kink 116 is bordering on L shape structure, and one end of kink 116 is connected with bottom 114, and to form an accommodation space, light source 120 is arranged in this accommodation space.Extension 118 is also connected with bottom 114, and kink 116 and extension 118 are connected to 114 both sides, bottom.Extension 118 extends from the side of bottom 114, and kink 116 is connected to the opposite side of bottom 114 relative to extension 118.Extension 118 is connected with bottom 114 and is not connected with kink 116.Microtriche fine texture 140 can be very low power, sintering metal particle or wire netting.
Light source 120 is arranged on bottom 114, and light source 120 comprises circuit board 122 and light-emittingdiode 124, and circuit board 122 is fixed on bottom 114, and light-emittingdiode 124 to be arranged on circuit board 122 and to be electrically connected with circuit board 122.A part for cavity 112 is positioned at above light source 120.Light guide plate 130 is positioned at the side of light source 120, and light guide plate 130 is positioned on extension 118 and is supported by extension 118.In other embodiments, light source 120 also can be arranged on kink 116, does not repeat them here.
After the fluid 150 in cavity 112 absorbs the heat that light-emittingdiode 124 sends, gas can be vaporizated into and to condensation end dissipation, then again be condensed into liquid fluid 150 at condensation end, and get back to heat source side through the capillary action of microtriche fine texture 140, to reach effect of circulation cooling.Aforesaid heat source side is position support 110 corresponding to light-emittingdiode 124, and condensation end can be kink 116 or extension 118.
With reference to Fig. 4, it is the sectional view illustrating backlight module of the present invention 4th embodiment.Include support 110 in backlight module 100, be arranged at the light source 120 on support 110, and be positioned at the light guide plate 130 of light source 120 side.Support 110 has cavity 112, and cavity 112 is the inside of through whole support 110.Backlight module 100 more comprises the microtriche fine texture 140 being formed in cavity 112 inside surface, and is positioned at the fluid 150 among cavity 112.
Support 110 includes bottom 114, kink 116 and back of the body cap 119.Kink 116 is connected to the one side of bottom 114, and back of the body cap 119 is connected to the another side of bottom 114.Kink 116 corresponds to the light-emitting area of backlight module 100, and carrying on the back cap 119 is then that position is at the another side relative to light-emitting area.
Backlight module 100 more comprises reflector plate 160 and blooming 170.Reflector plate 160 is arranged on back of the body cap 119, and light guide plate 130 and blooming 170 are overlapped on reflector plate 160 in order, and are positioned at the side of light source 120.The through bottom 114 of cavity 112, kink 116 and back of the body cap 119.Light source 120 can be arranged on bottom 114 or kink 116.The microtriche fine texture 140 on cavity 112 surface can be very low power, sintering metal particle or wire netting.
After the fluid 150 in cavity 112 absorbs the heat that light-emittingdiode 124 sends, gas can be vaporizated into and to condensation end dissipation, then again be condensed into liquid fluid 150 at condensation end, and get back to heat source side through the capillary action of microtriche fine texture 140, to reach effect of circulation cooling.Aforesaid heat source side is position support 110 corresponding to light-emittingdiode 124, and condensation end can be kink 116 or back of the body cap 119.
With reference to Fig. 5, it is the sectional view at another visual angle illustrating backlight module first embodiment of the present invention.Include support 110 in backlight module 100, be arranged at the light source 120 on support 110.The kink 116 that support 110 comprises bottom 114 and is connected with bottom 114, be formed with accommodation space between bottom 114 and kink 116, light source 120 is arranged in accommodation space.Light source 120 comprises the circuit board 122 be arranged on support 110 and the light-emittingdiode 124 be positioned on circuit board 122.The light source 120 of the present embodiment is positioned at bottom 114, and in other embodiments, light source 120 also can be fixed on the side (not illustrating in figure) of kink 116.
Support 110 has single cavity 112, and cavity 112 is the inside of through whole support 110, comprise through bottom 114 and kink 116, and below through light source 120, a part for its cavity 112 is more positioned at above light source 120.Backlight module 100 more comprises the microtriche fine texture 140 being formed in cavity 112 inside surface, and is positioned at the fluid 150 among cavity 112.Microtriche fine texture 140 can be very low power, sintering metal particle or wire netting.
After the fluid 150 in cavity 112 absorbs the heat that light-emittingdiode 124 sends, gas can be vaporizated into and to condensation end dissipation, then again be condensed into liquid fluid 150 at condensation end, and get back to heat source side through the capillary action of microtriche fine texture 140, to reach effect of circulation cooling.Aforesaid heat source side is position support 110 corresponding to light-emittingdiode 124, and condensation end can be between kink 116 or two light-emittingdiodes 124 at interval.
The present invention can reach the effect of circulation cooling effectively by the conversion of the fluid in cavity between vapour phase and liquid phase, the heat that light source is produced can evenly and be removed efficiently, avoid the generation of hot localised points, and then the situation that solution light guide plate bends because being heated inequality.
Although the present invention with a preferred embodiment openly as above; so it is not intended to limit the present invention; any those skilled in the art; not departing from spirit of the present invention and protection domain; can make various variation and perfect, therefore protection scope of the present invention is as the criterion with the protection domain of claim.

Claims (4)

1. a backlight module, comprising:
One support, has a cavity, the inside of the through whole support of this cavity, and this support comprises:
Bottom one, this light source is positioned on bottom this;
One kink, connects the one side bottom this; And
One back of the body cap, connects the another side bottom this;
One light source, is arranged on this support, and this light source comprises a circuit board and multiple light-emittingdiode, and this circuit board is fixed on the bottom of this support, and those light-emittingdiodes to be arranged on this circuit board and to be electrically connected with this circuit board;
One microtriche fine texture, is formed at this cavity surface; And
Fluid, be positioned among this cavity, this cavity has a heat source side and a condensation end, this heat source side this light source contiguous, this condensation end is away from this light source, this heat source side is the position of the light-emittingdiode corresponding to this light source in this support, this condensation end is this kink or between the plurality of light-emittingdiode at interval, this fluid is outwards evapotranspire to dispel the heat centered by the plurality of light-emittingdiode radially, after the heat that this light source sends when this absorption of fluids in this cavity, be vaporizated into gas and to condensation end dissipation, then again be condensed into liquid fluid at condensation end, and get back to heat source side by the capillary action of this microtriche fine texture, to carry out circulation cooling, the steam pressure of heat source side is higher than the steam pressure of condensation end.
2. backlight module as claimed in claim 1, it is characterized in that, this backlight module comprises a reflector plate and a light guide plate further, is arranged on this back of the body cap.
3. backlight module as claimed in claim 1, it is characterized in that, this microtriche fine texture is very low power, sintering metal particle or wire netting.
4. a backlight module, comprising:
One support, has:
Bottom one;
One kink, is connected with bottom this to form an accommodation space; And
One cavity, is positioned at bottom this and this kink;
One light source, be positioned at this accommodation space, wherein a part for this cavity is positioned at the top of this light source, and this light source comprises a circuit board and multiple light-emittingdiode, this circuit board is fixed on the bottom of this support, and this light-emittingdiode to be arranged on this circuit board and to be electrically connected with this circuit board;
One microtriche fine texture, is formed at this cavity surface;
Fluid, be positioned among this cavity, this cavity has a heat source side and a condensation end, this heat source side this light source contiguous, this condensation end is away from this light source, this heat source side is the position of the light-emittingdiode corresponding to this light source in this support, this condensation end is this kink or between the plurality of light-emittingdiode at interval, this fluid is outwards evapotranspire to dispel the heat centered by the plurality of light-emittingdiode radially, after the heat that this light source sends when this absorption of fluids in this cavity, be vaporizated into gas and to condensation end dissipation, then again be condensed into liquid fluid at condensation end, and get back to heat source side by the capillary action of this microtriche fine texture, to carry out circulation cooling, the steam pressure of heat source side is higher than the steam pressure of condensation end, and
One light guide plate, wherein this light source is the side being positioned at this light guide plate, and this support also has an extension and is connected bottom this and is not connected with this kink, and this light guide plate is positioned on this extension and is supported by this extension.
CN201110216968.4A 2011-03-02 2011-07-22 Backlight module Expired - Fee Related CN102352981B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
TW100106935A TWI432849B (en) 2011-03-02 2011-03-02 Backlight module
TW100106935 2011-03-02

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CN102352981A CN102352981A (en) 2012-02-15
CN102352981B true CN102352981B (en) 2016-02-24

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102901006A (en) * 2012-08-28 2013-01-30 深圳市华星光电技术有限公司 Liquid crystal display device and backlight module and back panel thereof
CN102878492B (en) * 2012-09-19 2015-04-08 京东方科技集团股份有限公司 Backlight module set and display device thereof
CN103591568B (en) * 2013-11-19 2015-10-28 深圳市华星光电技术有限公司 Heat-radiation loop pipe and the backlight module with this heat-radiation loop pipe
US9366484B2 (en) 2013-11-19 2016-06-14 Shenzhen China Star Optoelectronics Technology Co., Ltd Heat dissipation pipe loop and backlight module using same
CN113341607A (en) * 2021-05-31 2021-09-03 业成科技(成都)有限公司 Frame body and manufacturing method thereof, backlight module and electronic equipment
CN114153092A (en) * 2021-12-09 2022-03-08 武汉华星光电技术有限公司 Backlight module and display device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1831607A (en) * 2005-03-12 2006-09-13 三星电子株式会社 Edge light type backlight unit having radiator
CN1936666A (en) * 2005-09-22 2007-03-28 鸿富锦精密工业(深圳)有限公司 Back-light model group

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1831607A (en) * 2005-03-12 2006-09-13 三星电子株式会社 Edge light type backlight unit having radiator
CN1936666A (en) * 2005-09-22 2007-03-28 鸿富锦精密工业(深圳)有限公司 Back-light model group

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Publication number Publication date
TW201237516A (en) 2012-09-16
TWI432849B (en) 2014-04-01
CN102352981A (en) 2012-02-15

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Granted publication date: 20160224

Termination date: 20200722