CN105676524B - Backlight module and liquid crystal display device - Google Patents
Backlight module and liquid crystal display device Download PDFInfo
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- CN105676524B CN105676524B CN201610040705.5A CN201610040705A CN105676524B CN 105676524 B CN105676524 B CN 105676524B CN 201610040705 A CN201610040705 A CN 201610040705A CN 105676524 B CN105676524 B CN 105676524B
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- fixed part
- backlight module
- diaphragm group
- telescopic connection
- ear
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
Abstract
A kind of backlight module, including optical component and glue frame, glue frame surrounds optical component, optical component includes optical diaphragm group, the edge of optical diaphragm group is equipped with multiple ears, glue frame is equipped with the card slot of storage ear, backlight module further includes fixing piece, fixing piece includes the first fixed part, second fixed part and the telescopic connection made of marmem, first fixed part is fixedly connected with glue frame, second fixed part is fixedly connected with ear, telescopic connection connects the first fixed part and the second fixed part, when temperature changes, telescopic connection generates deformation and drives ear's synchronizing moving of the second fixed part and optical diaphragm group.The fixing piece of backlight module can be effectively prevented optical diaphragm group and generate warping phenomenon, moreover it is possible to prevent optical diaphragm group escape out of glue frame card slot, improve the quality of product.
Description
Technical field
The present invention relates to technical field of liquid crystal display more particularly to a kind of backlight modules and liquid crystal display device.
Background technique
Liquid crystal display device includes backlight module, liquid crystal display panel and front frame, and wherein backlight module includes backboard, optical section
Part and glue frame, optical component are set on backboard, and glue frame is also disposed on backboard and around optical component, for carrying liquid crystal surface
Plate, liquid crystal display panel are set in glue frame, and the backboard of front frame and backlight module, which is mutually clamped, fixes backlight module and liquid crystal display panel
It combines.Wherein, optical component is generally made of light source, reflector plate, light guide plate and optical diaphragm group etc., and reflector plate is led
Tabula rasa and optical diaphragm group are stacked on the bottom plate of backboard, and optical diaphragm group is located remotely from the top layer of bottom plate.
Fig. 1 is a kind of structural schematic diagram of existing backlight module, and Fig. 2 is that the side structure of Fig. 1 at a normal temperature shows
It is intended to, Fig. 3 is schematic diagram of the Fig. 2 after expanded by heating, and Fig. 4 is section view when a kind of ear of existing backlight module is fixed entirely
Figure, Fig. 5 is that cross-sectional view when a kind of ear of existing backlight module is semifixed is retouched for convenience also referring to Fig. 1 to Fig. 5
It states, Fig. 1 to Fig. 3 only simply depicts backboard 120 and optical diaphragm group 143, and specific structure please refers to Fig. 4 and Fig. 5, backlight mould
Group includes backboard 120, optical component 140 and glue frame 160.Backboard 120 includes bottom plate 121 and extends around from bottom plate 121
The side wall 122 perpendicular to bottom plate 121, the space that bottom plate 121 and side wall 122 surround is arranged in optical component 140 and glue frame 160
It is interior.Specifically, optical component 140 is arranged on the bottom plate 121 of backboard 120, and glue frame 160 is also disposed on the bottom plate 121 of backboard 120
It goes up and surrounds optical component 140.Optical component 140 includes reflector plate 141, light guide plate 142 and optical diaphragm group 143, reflector plate
141, light guide plate 142 and optical diaphragm group 143 are stacked on bottom plate 121, and reflector plate 141 is located on bottom plate 121, light guide plate
142 are located on reflector plate 141, and optical diaphragm group 143 is located on light guide plate 142.Optical diaphragm group 143 is generally by prismatic lens, expansion
The combination of one or more of the optical diaphragms such as discrete piece, brightening piece, polaroid brightness enhancement film, the edge of optical diaphragm group 143 are set
Have multiple for fixing the ear 144 of optical diaphragm group 143, the card slots 161 that glue frame 160 cooperates equipped with multiple and ear 144, light
Diaphragm group 143 is learned to connect by ear 144 with glue frame 160.
As shown in Fig. 2, optical diaphragm group 143 is typically entirely located at backboard when liquid crystal display device assembles
120 top (upside of light guide plate 142), but optical diaphragm group 143 and easy be affected by temperature are expanded with heat and contract with cold, when temperature increases
When, if the ear 144 for being located at 143 side of optical diaphragm group is fixed on entirely in the card slot of glue frame, optical diaphragm group 143 will can not
It is unfolded around, but to the Inner extrusion of optical diaphragm group 143, most all morning arches upward (such as Fig. 3 perpendicular to the direction of backboard 120
It is shown), there is warping phenomenon (Waving) in 143 bending of optical diaphragm group, influences the display quality of liquid crystal display device.
To solve warping phenomenon, optical diaphragm group 143 is generally used the side for making the ear 144 of opposite two sides semifixed
Method allows the ears 144 of opposite two sides wherein the semifixed method in the other side is fixed in side entirely.What Fig. 4 was painted is ear 144
Fixed situation entirely, as shown in figure 4, being equipped with fixed column 162 in the card slot 161 of glue frame 160, ear 144 is equipped with and fixed column 162
Ear 144 is set in fixed column 162 by fixed hole 145 when installing optical diaphragm group 143 by the fixed hole 145 of cooperation
On, it is attached on the top surface of glue frame 160 and fixed column far from 121 side of bottom plate with fixation adhesive tape 180 again later and makes fixed glue
Certain spacing distance is kept with ear 144 with 180, fixed column 162 limits ear 144 along the front and back for being parallel to bottom plate 120
Left and right four direction is mobile, and it is mobile towards the direction far from bottom plate 120 that fixation adhesive tape 180 limits ear 144.What Fig. 5 was painted is
The semifixed situation of ear 144, as shown in figure 5, the setting of ear 144 is attached to glue in card slot 161, then with fixation adhesive tape 180
Frame 160 simultaneously makes fixation adhesive tape 180 and ear 144 keep certain spacing distance, and ear 144 can be in card slot 161 along parallel
It is mobile in the four direction all around of bottom plate 120, but fixation adhesive tape 180 limits ear 144 towards the direction far from bottom plate 120
It is mobile, when the expansion of 143 heat of optical diaphragm group, warping phenomenon can be efficiently solved towards the expansion of semifixed side.Liquid crystal
Display device will not only bear high temperature and humidity test condition, more harsh vibration condition be still suffered from, when optical diaphragm group 143
Ear 144 using it is semifixed when, the ear 144 of the semifixed side easy escape that horizontally slips in card slot 161 comes out and leads to optics
Diaphragm group 143 shifts, and then the liquid crystal display panel for being located at the top of optical diaphragm group 143 is caused to crush or optical diaphragm group 143
Itself is scraped off.
Summary of the invention
The embodiment of the invention provides a kind of backlight module, fixing piece can be effectively prevented optical diaphragm group and generate warpage
Phenomenon, moreover it is possible to prevent optical diaphragm group escape out of glue frame card slot, improve the quality of product.
The embodiment of the invention also provides a kind of liquid crystal display device, optical diaphragm group will not generate warping phenomenon, light
Learn diaphragm group will not out of glue frame card slot escape, product quality it is preferable.
It is that it is realized by adopting the following technical scheme that the embodiment of the present invention, which solves its technical problem,.
A kind of backlight module, including optical component and glue frame, glue frame surround optical component, and optical component includes optical diaphragm
Group, the edge of optical diaphragm group are equipped with multiple ears, and glue frame is equipped with the card slot of storage ear, and backlight module further includes fixing piece,
Fixing piece include the first fixed part, the second fixed part and the telescopic connection made of marmem, the first fixed part with
Glue frame is fixedly connected, and the second fixed part is fixedly connected with ear, and telescopic connection connects the first fixed part and the second fixed part,
Telescopic connection generates deformation and drives ear's synchronizing moving of the second fixed part and optical diaphragm group when temperature changes.
In a preferred embodiment of the present invention, above-mentioned first fixed position in telescopic connection close to optical component side,
Two fixed positions are in telescopic connection far from optical component side, and telescopic connection stretches outward when the temperature rises, and second
Fixed part is towards far from the movement of the first fixed part direction.
In a preferred embodiment of the present invention, above-mentioned telescopic connection includes the multiple first shape memorial alloys being arranged
Item, first shape memorial alloy item V-shaped structure in normal temperature state, including connected first connecting portion and the second connection
Portion, end of the first connecting portion far from second connecting portion is first end, and end of the second connecting portion far from first connecting portion is
The second end, first end are connected to the first fixed part, and the second end is connected to the second fixed part；First end and the second end
The distance between become larger as the temperature rises.
In a preferred embodiment of the present invention, above-mentioned second fixed part is equipped with positioning column, the ear of optical diaphragm group be equipped with
The corresponding location hole of positioning column, positioning column are inserted into location hole.
In a preferred embodiment of the present invention, above-mentioned first fixed position in telescopic connection far from optical component side,
Two fixed positions are in telescopic connection close to optical component side, and telescopic connection is internally shunk when the temperature rises, and second
Fixed part is towards close to the movement of the first fixed part direction.
In a preferred embodiment of the present invention, above-mentioned telescopic connection includes multiple second marmems being arranged
Item, the second shape memory alloy strip linear structure in normal temperature state, first end and the second end including being located at both ends,
First end is connected to the first fixed part, and the second end is connected to the second fixed part；Between first end and the second end away from
From gradually becoming smaller as the temperature rises.
In a preferred embodiment of the present invention, above-mentioned backlight module includes backboard, and backboard includes bottom plate and from bottom plate surrounding
In the space that the side wall perpendicular to bottom plate extended, optical component and glue frame setting bottom plate and side wall surround, optical component is also
Including reflector plate and light guide plate, reflector plate is located on bottom plate, and light guide plate is located on reflector plate, and optical diaphragm group is located at light guide plate
On.
In a preferred embodiment of the present invention, make telescopic connection marmem contain Ni:55.4%~
56.2%, C < 0.07, H < 0.005, O < 0.05, N < 0.05.
A kind of liquid crystal display device, including above-mentioned backlight module.
The invention has the advantages that backlight module of the invention includes optical component, glue frame and fixing piece, glue frame is surrounded
Optical component and be arranged, optical component includes optical diaphragm group, and the edge of optical diaphragm group is equipped with multiple ears, and glue frame, which is equipped with, to be received
Receive the card slot of ear, fixing piece includes the first fixed part, the second fixed part and the telescopic connection made of marmem,
First fixed part is fixedly connected with glue frame, and the second fixed part is fixedly connected with ear, telescopic connection connect the first fixed part and
Second fixed part, when temperature changes, telescopic connection generates deformation and drives the ear of the second fixed part and optical diaphragm group
Portion's synchronizing moving can guarantee that optical diaphragm group at high temperature can be certainly by fixing piece dynamic positioning optical diaphragm group constantly
By movement, prevent warping phenomenon from generating, under the conditions of vibration, either room temperature or the condition of high temperature, fixing piece can be prevented
Optical diaphragm group escape out of glue frame card slot avoids optical diaphragm group and crushes liquid crystal display panel or optical diaphragm group sheet
Body is scraped off, and effectively improves the quality of product.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, and in order to allow above-mentioned backlight module and liquid crystal display device of the invention and its
He can be more clearly understood objects, features and advantages, special below to lift preferred embodiment, and cooperate attached drawing, be described in detail.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of existing backlight module.
Fig. 2 is the side structure schematic diagram of Fig. 1 at a normal temperature.
Fig. 3 is schematic diagram of the Fig. 2 after expanded by heating.
Fig. 4 is cross-sectional view when a kind of ear of existing backlight module is fixed entirely.
Fig. 5 is cross-sectional view when a kind of ear of existing backlight module is semifixed.
Fig. 6 is structural schematic diagram of the backlight module of first embodiment of the invention in normal temperature state.
Fig. 7 is the partial structural diagram of fixing piece shown in 6.
Fig. 8 be originally be first embodiment of the invention shape memory alloy strip structural schematic diagram.
Fig. 9 is structural schematic diagram of the backlight module of first embodiment of the invention after temperature raising.
Figure 10 is the partial structural diagram of fixing piece shown in 9.
Figure 11 is the decomposition texture schematic diagram of the backlight module of first embodiment of the invention.
Figure 12 is the structural schematic diagram of the fixing piece of the backlight module of first embodiment of the invention.
Figure 13 be Figure 11 be first embodiment of the invention backlight module combining structure schematic diagram.
Figure 14 is structural schematic diagram of the backlight module of second embodiment of the invention in normal temperature state.
Figure 15 is the partial structural diagram of fixing piece shown in 14.
Figure 16 is structural schematic diagram of the backlight module of second embodiment of the invention after temperature raising.
Figure 17 is the partial structural diagram of fixing piece shown in 16.
Specific embodiment
Further to illustrate the present invention to reach the technical means and efficacy that predetermined purpose is taken, below in conjunction with attached drawing
And preferred embodiment, to the specific embodiment, structure, feature of backlight module proposed according to the present invention and liquid crystal display device
And its effect, detailed description is as follows.
For the present invention aforementioned and other technology contents, feature and effect, in following cooperation with reference to the preferable implementation of figure
It can be clearly appeared from the detailed description of example.By the explanation of specific embodiment, when predetermined purpose can be reached to the present invention
The technical means and efficacy taken be able to more deeply and it is specific understand, however institute's attached drawing be only to provide reference and description it
With being not intended to limit the present invention.
Fig. 6 is structural schematic diagram of the backlight module of first embodiment of the invention in normal temperature state, and Fig. 7 is shown in 6
The partial structural diagram of fixing piece, referring to Figure 6 together and Fig. 7, backlight module include backboard 220, optical component 240 and glue
Frame 260.Backboard 220 includes bottom plate 221 and the side wall 222 perpendicular to bottom plate 221 extended around from bottom plate 221, optics
Component 240 and glue frame 260 are arranged in the space that bottom plate 221 and side wall 222 surround.Specifically, optical component 240 is arranged in backboard
On 220 bottom plate 221, glue frame 260 is also disposed on the bottom plate 221 of backboard 220 and around optical component 240.Optical component 240
Including reflector plate 241, light guide plate 242 and optical diaphragm group 243, reflector plate 241, light guide plate 242 and optical diaphragm group 243 are laminated
It is arranged on bottom plate 221, reflector plate 241 is located on bottom plate 221, and light guide plate 242 is located on reflector plate 241, optical diaphragm group 243
On light guide plate 242.
Optical diaphragm group 243 is generally by one in the optical diaphragms such as prismatic lens, diffusion sheet, brightening piece, polaroid brightness enhancement film
Kind or several combinations, the edge of optical diaphragm group 243 are equipped with multiple for fixing the ears 244 of optical diaphragm group 243, glue frame
260, which are equipped with multiple and ear 244, cooperates the card slot 261 for storing ear 244, and optical diaphragm group 243 passes through ear 244 and glue
Frame 260 connects.
Backlight module further includes fixing piece 280, and fixing piece 280 includes the first fixed part 281, the second fixed part 282 and stretches
Contracting interconnecting piece 283, telescopic connection 283 connect the first fixed part 281 and the second fixed part 282.In the present embodiment, first is fixed
Portion 281 close to backlight module inside and be fixedly connected with glue frame 260, side wall 222 of second fixed part 282 close to backboard 220
And it is fixedly connected with ear 244, but be not limited thereto.
Specifically, the both ends of the first fixed part 281 are fixed on table of the glue frame 260 far from 221 side of bottom plate by fixed glue
Face, but be not limited thereto, other any suitable fixed forms.
Second fixed part 282 is equipped with positioning column 285 close to the surface of ear 244, and ear 244 is equipped with right with positioning column 285
The location hole 245 answered, positioning column 285 are inserted into location hole 245, the fixed form of the second fixed part 282 and ear 244 also not with
This is limited, other any suitable fixed forms.
In the present embodiment, telescopic connection 283 is made of a kind of marmem.Marmem is that one kind can
The former shaped intellectual material of memory, this alloy have the ability of memory, i.e. after the shape of alloy is changed, one to shape
When denier temperature reaches certain transition temperature, it can with magic change back to original shape again, and people are with this spy
The alloy of distinguished service energy is known as marmem.1963, the ratio Le of USN's Armament Research Establishment was found in research work,
Be higher than in more certain temperature range of room temperature, a kind of Ni-Ti alloy silk be burnt into spring, then in cold water it be straightened or
The shapes such as square, triangle are cast, then are placed in 40 DEG C or more of hot water, which just reverts to original bullet spring shape
Shape.It finds successively later, other certain alloys also have similar function.Every kind of shape formed with certain element by certain weight ratio
Shape memory alloys have a transition temperature, which is processed into certain shape more than this temperature, then that its is cold
But after arriving transition temperature hereinafter, manually changing its shape, it is heated to transition temperature or more, which will automatically restore
To the shape being originally processed into more than transition temperature.Marmem is due to many excellent performances, thus extensively
Applied to multiple fields such as aerospace, mechano-electronic, biologic medical and daily lifes.
When the marmem formed by a certain percentage with certain element is limited by one at lower than mutually abnormal temperature
This special phenomenon for the reset condition that it can be made to be restored to before deformation after the plastic deformation of degree by the method heated, as shape
Shape memory effect.From the point of view of microcosmic, shape memory effect is the intrinsic changing rule of crystal structure.Usual metal alloy is in solid-state
When, atom is arranged according to certain rule, and the atomic arrangement rule of marmem be then change with environmental condition and
Change.For example, atom is arranged by a certain rule, structure at this time when temperature drops to some critical-temperature or less
Referred to as martensitic phase；And when temperature is increased to some critical-temperature or more, the arrangement regulation of atom will change, atom
It is arranged again by another rule, at this time referred to as austenite phase or parent phase.The motive force that shape is restored is by heating temperature
What the difference of the free energy of lower parent phase and martensitic phase generated.Shape memory effect is atom collective motion caused by martensitic traoformation
The phenomenon that, it is generated when marmem is cooled to Ms (martensite start) point or less, in a crystal grain of parent phase many
Self-coordinating can occur for martensite variants, each variant growth process, therefore without macroscopical volume change when phase transformation.
In the present embodiment, fixing piece 280 is long strip shape structure, the length direction and fixing piece of telescopic connection 283
280 length direction is consistent, and telescopic connection 283 lies along the first fixed part 281 and along the length direction of fixing piece 280
Between two fixed parts 282.Telescopic connection 283 is, for example, to be stretched or bounced back by a kind of variation with temperature with round trip note
The marmem for recalling effect is made, and double-pass memory effect restores high-temperature-phase shape when referring to the heating of certain marmems
Shape can restore low-temperature phase shape when cooling again.Fine exploitation has been obtained in marmem at present, -100 DEG C~100
The change of DEG C any point shape can control, such as the marmem of production telescopic connection 283 contains Ni:55.4%
When~56.2%, C < 0.07, H < 0.005, O < 0.05, N < 0.05, can effectively control temperature change value is 20 DEG C~90 DEG C.
Fig. 8 be originally be first embodiment of the invention shape memory alloy strip structural schematic diagram, please refer to Fig. 6 to Fig. 8,
Telescopic connection 283 is for example including the multiple first shape memorial alloy items 284 being arranged, first shape memorial alloy item
284 have first end 2841 and the second end 2842, and first end 2841 is connected to the first fixed part 281, the second end
2842 are connected to the second fixed part 282.Have between first between first end 2841 and the second end 2842 in normal temperature state
Gauge is width of the telescopic connection 283 in normal temperature state from L1, the first spacing distance L1, also be can be regarded as in room temperature
Spacing distance when state between the first fixed part 281 and the second fixed part 282；As the temperature rises, first end 2841
The distance between the second end 2842 can become larger, and when reaching certain temperature, first shape memorial alloy item 284 restores
High-temperature-phase shape, between first end 2841 and the second end 2842 have the second spacing distance L2, the second spacing distance L2 be
For width of the telescopic connection 283 after temperature raising, the first fixed part 281 and second after temperature increases also can be regarded as
Spacing distance between fixed part 282.In other words, have in normal temperature state, the first fixed part 281 and the second fixed part 282
First spacing distance L1, as the temperature rises, telescopic connection 283 generate deformation, such as stretch outward, the second fixed part
282 towards far from the movement of 281 direction of the first fixed part, and the spacing distance between the first fixed part 281 and the second fixed part 282 is gradually
Become larger, when telescopic connection 283 restores high-temperature-phase shape, the first fixed part 281 and the second fixed part 282 have the second interval
Distance L2.
In the present embodiment, the second spacing distance L2 is greater than the first spacing distance L1 and is that is, as the temperature rises telescopically connected to
Portion 283 is to be unfolded to two sides, but be not limited thereto.Specifically, as shown in figure 8, in normal temperature state, telescopic connection
The 283 for example V-shaped structure of first shape memorial alloy item 284 connects including connected first connecting portion 2843 and second
Socket part 2844, wherein first end 2841 is end of the first connecting portion 2843 far from second connecting portion 2844, the second end
2842 be end of the second connecting portion 2844 far from first connecting portion 2843.The length of first connecting portion 2843 is A, second connects
The length in portion 2844 is B, and there is angle theta can calculate the according to A, B and θ for first connecting portion 2843 and second connecting portion 2844
The distance between one end 2841 and the second end 2842.Such as when the length A of first connecting portion 2843 is equal to second connecting portion
2844 length B and when θ=60 °, L1=A (or B) under normal temperature state, as the temperature rises, angle theta starts to become larger, and works as folder
When θ=180 ° of angle, L2=2A (or 2B), at this point, first shape memorial alloy item 284 ultimately forms linear structure.
Fig. 9 is structural schematic diagram of the backlight module of first embodiment of the invention after temperature raising, and Figure 10 is shown in 9
The partial structural diagram of fixing piece, also referring to Fig. 9 and Figure 10, as the temperature rises, after optical diaphragm group 243 is heated
It is expanded to 222 direction of side wall of backboard 220, the first fixed part 281 and the glue frame 260 of fixing piece 280 secure, therefore will not move
Dynamic, telescopic connection 283 is influenced by the raised of temperature, can also extend to 222 direction of side wall of backboard 220, while drive the
Two fixed parts 282 are drawn close to side wall 222, and the second fixed part 282 is fixedly connected with the ear 244 of optical diaphragm group 243, work as optics
Diaphragm group 243 is when unidirectional linear thermal expansion length is equal to the stretch value of telescopic connection 283, the second fixed part 282
With 244 synchronizing moving of ear of optical diaphragm group 243.It is appreciated that during temperature is again restored to normal temperature state, the
Two fixed parts 282 and 244 synchronous backward of ear of optical diaphragm group 243 are mobile.Wherein, the linear heat of optical diaphragm group 243 is swollen
Swollen length can be calculated according to the coefficient of expansion, diaphragm length and temperature variation etc. of optical diaphragm group 243.Optical diaphragm group
The ear 244 of 243 same direction (width direction of such as backlight module) two sides is all using the fixation of fixing piece 280 or in which side
The complete fixed other side is fixed using fixing piece 280, is not limited thereto.
Figure 11 is the decomposition texture schematic diagram of the backlight module of first embodiment of the invention, and Figure 12 is that the present invention first is implemented
Example backlight module fixing piece structural schematic diagram, Figure 13 be Figure 11 be first embodiment of the invention backlight module combination
Structural schematic diagram, also referring to Figure 11 to Figure 13, first by glue frame 260, reflector plate 241, light guide plate 242 when assembling backlight module
And in the space that optical diaphragm group 243 etc. is put into the bottom plate 221 of backboard 220 and side wall 222 surrounds, the glue near card slot 261
Close to such as fixed glue 290 of backlight unit side setting fixed structure on frame 260, by the first fixed part 281 of fixing piece 280
The fixed area 286 at both ends passes through fixed glue 290 and is fixed in glue frame 260, meanwhile, make the second fixed part 282 of fixing piece 280
Positioning column 285 be arranged in the location hole 245 of ear 244.
Figure 14 is structural schematic diagram of the backlight module of second embodiment of the invention in normal temperature state, and Figure 15 is shown in 14
Fixing piece partial structural diagram, Figure 16 be second embodiment of the invention backlight module temperature raising after structure show
It is intended to, Figure 17 is the partial structural diagram of fixing piece shown in 16, also referring to Figure 14 and Figure 17, the back of second embodiment
Optical mode group is roughly the same with first embodiment, the difference is that, the fixing piece 380 of the backlight module of second embodiment is different
In first embodiment, and the fixed form of fixing piece 380 is also different from first embodiment.
Specifically, fixing piece 380 includes the first fixed part 381, the second fixed part 382 and telescopic connection 383, fixing piece
380 be long strip shape structure, and the length direction of telescopic connection 383 is consistent with the length direction of fixing piece 380, is telescopically connected to
Portion 383 extends along the length direction of fixing piece 380 and is connected between the first fixed part 381 and the second fixed part 382.This implementation
In example, the first fixed part 381 close to backboard 220 side wall 222 and be fixedly connected with glue frame 260, the second fixed part 382 is close to back
The inside of optical mode group is simultaneously fixedly connected with ear 244.Specifically, the both ends of the first fixed part 381 pass through first fixed structure 391
(such as fixed glue) is fixed on surface of the glue frame 260 far from 221 side of bottom plate, and the second fixed part 382 is close to the surface of ear 244
It is fixedly connected, but is not limited thereto with ear 244 also by the second fixed structure 392 (such as fixed glue).
In the present embodiment, telescopic connection 383 for example including multiple second shape memory alloy strips 384 being arranged,
Second shape memory alloy strip 384 has first end 3841 and the second end 3842, and it is solid that first end 3841 is connected to first
Determine portion 381, the second end 3842 is connected to the second fixed part 382.First end 3841 and the second end in normal temperature state
There is third spacing distance L3 between 3842, third spacing distance L3 is width of the telescopic connection 383 in normal temperature state,
Also it can be regarded as the spacing distance in normal temperature state between the first fixed part 381 and the second fixed part 382；With temperature
It increases, the distance between first end 3841 and the second end 3842 become smaller, and when reaching certain temperature, the second shape memory is closed
Gold bar 384 restores high-temperature-phase shape, has the 4th spacing distance L4 between first end 3841 and the second end 3842, between the 4th
Gauge is width of the telescopic connection 383 after temperature raising from L4, also can be regarded as the first fixation after temperature increases
Spacing distance between portion 381 and the second fixed part 382.In other words, in normal temperature state, the first fixed part 381 and second is solid
Portion 382 is determined with third spacing distance L3, as the temperature rises, telescopic connection 383 generates deformation, such as internally shrink,
Second fixed part 382 towards mobile close to 281 direction of the first fixed part, between the first fixed part 381 and the second fixed part 382 between
Gauge is from gradually becoming smaller, and when telescopic connection 383 restores high-temperature-phase shape, the first fixed part 381 and the second fixed part 382 have
There is the 4th spacing distance L4.
In the present embodiment, the 4th spacing distance L4 is less than third spacing distance L3 and is that is, as the temperature rises telescopically connected to
Portion 383 is to contract.Specifically, as shown in Figure 14,15, in normal temperature state, the second shape of telescopic connection 383 is remembered
The linear structure of alloy bar 384 is recalled, as the temperature rises, to 222 side of side wall of backboard 220 after optical diaphragm group 243 is heated
To expansion, the first fixed part 381 and the glue frame 260 of fixing piece 380 are secured, therefore will not move, and telescopic connection 383 is by temperature
The raised influence of degree becomes Wave-shaped structural by linear structure, the interval distance between first end 3841 and the second end 3842
From gradually becoming smaller, while the second fixed part 382 being driven to draw close to side wall 222, the second fixed part 382 and optical diaphragm group 243
Ear 244 is fixedly connected, when optical diaphragm group 243 is equal to telescopic connection 383 in unidirectional linear thermal expansion length
When stretch value, 244 synchronizing moving of ear of the second fixed part 382 and optical diaphragm group 243.It is appreciated that extensive again in temperature
During answering to normal temperature state, the second fixed part 382 and 244 synchronous backward of ear of optical diaphragm group 243 are mobile.
Backlight module of the invention includes optical component 240, glue frame 260 and fixing piece 280 (380), and glue frame 260 surrounds light
Department of the Chinese Academy of Sciences's part 240 and be arranged, optical component 240 includes optical diaphragm group 243, and the edge of optical diaphragm group 243 is equipped with multiple ears
244, glue frame 260 is equipped with the card slot 261 of storage ear 244, and fixing piece 280 (380) includes the first fixed part 281 (381), second
Fixed part 282 (382) and the telescopic connection 283 (383) made of marmem, the first fixed part 281 (381) and glue
Frame 260 is fixedly connected, and the second fixed part 282 (382) is fixedly connected with ear 244, telescopic connection 283 (383) connection first
Fixed part 281 (381) and the second fixed part 282 (382), when temperature changes, telescopic connection 283 (383) generates deformation
And 244 synchronizing moving of ear of the second fixed part 282 (382) and optical diaphragm group 243 is driven, it is dynamic by fixing piece 280 (380)
State positions optical diaphragm group 243, can guarantee that optical diaphragm group 243 can be moved freely at high temperature, prevent warpage constantly
Phenomenon generates.Under the conditions of vibration, either room temperature or the condition of high temperature, fixing piece 280 (380) can prevent optical diaphragm group
243 out of glue frame 260 card slot 261 escape, avoid optical diaphragm group 243 and crush the liquid crystal display panel being positioned above, or
It is that optical diaphragm group 243 is scraped off in itself, effectively improves the quality of product.
Backlight module provided by the present invention and liquid crystal display device are described in detail above, it is used herein
A specific example illustrates the principle and implementation of the invention, and the above embodiments are only used to help understand originally
The method and its core concept of invention；At the same time, for those skilled in the art, according to the thought of the present invention, specific
There will be changes in embodiment and application range, in conclusion the content of the present specification should not be construed as to of the invention
Limitation.
Claims (9)
1. a kind of backlight module, including optical component (240) and glue frame (260), the glue frame (260) surrounds the optical component
(240), the optical component (240) includes optical diaphragm group (243), and the edge of the optical diaphragm group (243) is equipped with multiple
Ear (244), the glue frame (260) are equipped with the card slot (261) for storing the ear (244), characterized in that the backlight module
It further include fixing piece (280,380), the fixing piece (280,380) includes the first fixed part (281,381), the second fixed part
(282,382) and the telescopic connection made of marmem (283,383), first fixed part (281,381) with
The glue frame (260) is fixedly connected, and second fixed part (282,382) is fixedly connected with the ear (244), described flexible
Interconnecting piece (283,383) connects first fixed part (281,381) and second fixed part (282,382), sends out in temperature
The telescopic connection (283,383) generates deformation and is driving the second fixed part (282,382) movement when changing
Ear (244) synchronizing moving with the optical diaphragm group (243) simultaneously.
2. backlight module as described in claim 1, characterized in that first fixed part (281) is located at described be telescopically connected to
Close to the optical component (240) side, it is remote that second fixed part (282) is located at the telescopic connection (283) in portion (283)
From the optical component (240) side, the telescopic connection (283) is stretched outward when the temperature rises, and described second is solid
Portion (282) is determined towards far from the first fixed part (281) direction movement.
3. backlight module as claimed in claim 2, characterized in that the telescopic connection (283) include be arranged it is more
A first shape memorial alloy item (284), first shape memorial alloy item (284) V-shaped knot in normal temperature state
Structure, including connected first connecting portion (2843) and second connecting portion (2844), the first connecting portion (2843) is far from described
The end of second connecting portion (2844) is first end (2841), and the second connecting portion (2844) is far from the first connecting portion
(2843) end is the second end (2842), and the first end (2841) is connected to first fixed part (281), described
The second end (2842) is connected to second fixed part (282)；The first end (3841) and the second end
The distance between (3842) it becomes larger as the temperature rises.
4. backlight module as claimed in claim 2, characterized in that second fixed part (282) is equipped with positioning column (285),
The ear (244) of the optical diaphragm group (243) is equipped with location hole (245) corresponding with the positioning column (285), the positioning
Column (285) is inserted into the location hole (245).
5. backlight module as described in claim 1, characterized in that first fixed part (381) is located at described be telescopically connected to
Portion (383) is located at the telescopic connection (383) and leans on far from the optical component (240) side, second fixed part (382)
Nearly optical component (240) side, the telescopic connection (383) is internally shunk when the temperature rises, and described second is solid
Portion (382) is determined towards close to the first fixed part (281) direction movement.
6. backlight module as claimed in claim 5, characterized in that the telescopic connection (383) include be arranged it is more
A second shape memory alloy strip (384), the second shape memory alloy strip (384) linear structure in normal temperature state,
First end (3841) and the second end (3842) including being located at both ends, the first end (3841) are connected to described first
Fixed part (381), the second end (3842) are connected to second fixed part (382)；The first end (3841) and
The distance between described the second end (3842) gradually becomes smaller as the temperature rises.
7. backlight module as described in claim 1, characterized in that the backlight module includes backboard (220), the backboard
It (220) include bottom plate (221) and the side wall (222) perpendicular to bottom plate (221) extended around from bottom plate (221), it is described
It is described in the space that the bottom plate (221) is arranged in optical component (240) and the glue frame (260) and the side wall (222) surrounds
Optical component (240) further includes reflector plate (241) and light guide plate (242), and the reflector plate (241) is located at the bottom plate (221)
On, the light guide plate (242) is located on the reflector plate (241), and the optical diaphragm group (243) is located at the light guide plate
(242) on.
8. backlight module as described in claim 1, characterized in that make the shape note of the telescopic connection (283,383)
Recall alloy and contains Ni:55.4%~56.2%, C < 0.07, H < 0.005, O < 0.05, N < 0.05.
9. a kind of liquid crystal display device, characterized in that including backlight module as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610040705.5A CN105676524B (en) | 2016-01-21 | 2016-01-21 | Backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610040705.5A CN105676524B (en) | 2016-01-21 | 2016-01-21 | Backlight module and liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105676524A CN105676524A (en) | 2016-06-15 |
| CN105676524B true CN105676524B (en) | 2018-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610040705.5A Active CN105676524B (en) | 2016-01-21 | 2016-01-21 | Backlight module and liquid crystal display device |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108563064B (en) * | 2018-01-05 | 2021-04-13 | 京东方科技集团股份有限公司 | Backlight module, assembling method thereof and display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201652215U (en) * | 2010-03-05 | 2010-11-24 | 华映光电股份有限公司 | Diaphragm locating mechanism of backlight module |
| CN203744147U (en) * | 2014-03-26 | 2014-07-30 | 南京中电熊猫液晶显示科技有限公司 | Diaphragm fixing device of LED backlight module |
| CN103982831A (en) * | 2014-05-30 | 2014-08-13 | 南京中电熊猫液晶显示科技有限公司 | Backlight module |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI320120B (en) * | 2005-09-26 | 2010-02-01 | Backlight module and diffusion module and diffuser thereof | |
| TWI385438B (en) * | 2009-06-30 | 2013-02-11 | Au Optronics Corp | Frame structure, backlight module and display module |
-
2016
- 2016-01-21 CN CN201610040705.5A patent/CN105676524B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201652215U (en) * | 2010-03-05 | 2010-11-24 | 华映光电股份有限公司 | Diaphragm locating mechanism of backlight module |
| CN203744147U (en) * | 2014-03-26 | 2014-07-30 | 南京中电熊猫液晶显示科技有限公司 | Diaphragm fixing device of LED backlight module |
| CN103982831A (en) * | 2014-05-30 | 2014-08-13 | 南京中电熊猫液晶显示科技有限公司 | Backlight module |
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| CN105676524A (en) | 2016-06-15 |
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Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee after: Kunshan Longteng Au Optronics Co Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee before: Kunshan Longteng Optronics Co., Ltd. |