CN105676524A - Backlight module and liquid crystal display device - Google Patents
Backlight module and liquid crystal display device Download PDFInfo
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- CN105676524A CN105676524A CN201610040705.5A CN201610040705A CN105676524A CN 105676524 A CN105676524 A CN 105676524A CN 201610040705 A CN201610040705 A CN 201610040705A CN 105676524 A CN105676524 A CN 105676524A
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- fixed part
- connecting portion
- backlight module
- flexible connecting
- 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 backlight module comprises an optical component and a rubber frame which surrounds the optical component, the optical component comprises an optical film group, a plurality of ear parts are arranged on the edge of the optical film group, clamping grooves which accommodate the ear parts are formed in the rubber frame, the backlight module further comprises fixing parts which comprise first fixing parts, second fixing parts and telescopic connection parts, the telescopic connection parts are made of shape memory alloy, the first fixing parts are fixedly connected with the rubber frame, the second fixing parts are fixedly connected with the ear parts, the telescopic connection parts connect the first fixing parts and the second fixing parts, and the telescopic connection parts deform and drive the second fixing parts and the ear parts of the optical component to move synchronously when the temperature changes. The fixing parts of the optical component can prevent the optical film group from warping and jumping out of the clamping grooves of the rubber frame, and the product quality is improved.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of backlight module and liquid crystal indicator.
Background technology
Liquid crystal indicator includes backlight module, liquid crystal panel and front frame, wherein backlight module includes backboard, optics and glue frame, optics is arranged on backboard, glue frame is also disposed on backboard and around optics, for bearing liquid crystal display panel, liquid crystal panel is arranged on glue frame, and front frame is mutually clamped backlight module together with liquid crystal panel fixed Combination with the backboard of backlight module. Wherein, optics is generally made up of light source, reflector plate, light guide plate and optical diaphragm group etc., and reflector plate, light guide plate and optical diaphragm group stacking are arranged on the base plate of backboard, and optical diaphragm group is located remotely from the superiors of base plate.
Fig. 1 is the structural representation of existing a kind of backlight module, Fig. 2 is Fig. 1 side structure schematic diagram at a normal temperature, Fig. 3 is Fig. 2 schematic diagram after expanded by heating, Fig. 4 is the ear of existing a kind of backlight module sectional view when entirely fixing, Fig. 5 be the ear of existing a kind of backlight module semifixed time sectional view, see also Fig. 1 to Fig. 5, for convenience of describing, Fig. 1 to Fig. 3 only simply depicts backboard 120 and optical diaphragm group 143, concrete structure refers to Fig. 4 and Fig. 5, and backlight module includes backboard 120, optics 140 and glue frame 160. Backboard 120 includes base plate 121 and the sidewall 122 being perpendicular to base plate 121 extended around from base plate 121, in the space that optics 140 and glue frame 160 arrange base plate 121 and sidewall 122 surrounds. Specifically, optics 140 is arranged on the base plate 121 of backboard 120, and glue frame 160 is also disposed on the base plate 121 of backboard 120 and around optics 140. Optics 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 stacking are arranged on base plate 121, reflector plate 141 is positioned on base plate 121, light guide plate 142 is positioned on reflector plate 141, and optical diaphragm group 143 is positioned on light guide plate 142. Optical diaphragm group 143 is general by the combination of one or more in the blooming pieces such as prismatic lens, diffusion sheet, brightening piece, polaroid brightness enhancement film, the edge of optical diaphragm group 143 is provided with multiple ear 144 for fixing optical diaphragm group 143, glue frame 160 is provided with multiple draw-in groove 161 coordinated with ear 144, and optical diaphragm group 143 is connected with glue frame 160 by ear 144.
As shown in Figure 2, when liquid crystal indicator assembles, optical diaphragm group 143 is typically all the top (upside of light guide plate 142) being entirely positioned at backboard 120, but optical diaphragm group 143 and easily temperature influence expand with heat and contract with cold, when the temperature increases, if the ear 144 being positioned at optical diaphragm group 143 side is fixed on the draw-in groove of glue frame entirely, optical diaphragm group 143 will be launched to surrounding, but to the Inner extrusion of optical diaphragm group 143, (as shown in Figure 3) is arched upward in the direction that most all morning is perpendicular to backboard 120, there is warping phenomenon (Waving) in optical diaphragm group 143 bending, affect the display quality of liquid crystal indicator.
For solving warping phenomenon, optical diaphragm group 143 generally all adopts the method making the ear 144 of relative both sides semifixed or allows the ear 144 wherein side of relative both sides entirely fix the method that opposite side is semifixed. situation that ear 144 fixes entirely that what Fig. 4 illustrated is, as shown in Figure 4, fixing post 162 it is provided with in the draw-in groove 161 of glue frame 160, ear 144 is provided with the fixed via 145 coordinated with fixing post 162, when optical diaphragm group 143 is installed, ear 144 is set on fixing post 162 by fixed via 145, it is attached to glue frame 160 and fixing post away from the end face of base plate 121 side and make fixation adhesive tape 180 and ear 144 keep certain spacing distance more afterwards with fixation adhesive tape 180, fixing post 162 limits ear 144 and moves along the four direction all around being parallel to base plate 120, fixation adhesive tape 180 limits ear 144 and moves towards the direction away from base plate 120. the situation that what Fig. 5 illustrated is ear 144 is semifixed, as shown in Figure 5, ear 144 is arranged in draw-in groove 161, it is attached to glue frame 160 with fixation adhesive tape 180 again and makes fixation adhesive tape 180 and ear 144 keep certain spacing distance, ear 144 can move along the four direction all around being parallel to base plate 120 in draw-in groove 161, but fixation adhesive tape 180 limits ear 144 and moves towards the direction away from base plate 120, when optical diaphragm group 143 heat expands, towards the expansion of semifixed side, warping phenomenon can be efficiently solved. liquid crystal indicator not only to bear hot and humid test condition, still suffer from more harsh vibrations condition, when the ear 144 of optical diaphragm group 143 adopts semifixed, the ear 144 of the semifixed side easy escape that horizontally slips in draw-in groove 161 out causes that optical diaphragm group 143 shifts, and then cause that the liquid crystal panel being positioned at above optical diaphragm group 143 crushes, or optical diaphragm group 143 is scraped off itself.
Summary of the invention
Embodiments providing a kind of backlight module, its fixture can be effectively prevented optical diaphragm group and produce warping phenomenon, moreover it is possible to prevents optical diaphragm group from escape in the draw-in groove of glue frame, improves the quality of product.
The embodiment of the present invention additionally provides a kind of liquid crystal indicator, and its optical diaphragm group will not produce warping phenomenon, and optical diaphragm group is without escape in the draw-in groove from glue frame, and product quality is better.
The embodiment of the present invention solves it and technical problem is that what the following technical scheme of employing realized.
A kind of backlight module, including optics and glue frame, glue frame is around optics, optics includes optical diaphragm group, the edge of optical diaphragm group is provided with multiple ear, glue frame is provided with the draw-in groove of storage ear, backlight module also includes fixture, fixture includes the first fixed part, second fixed part and the flexible connecting portion being made up of marmem, first fixed part is fixing with glue frame to be connected, second fixed part is fixing with ear to be connected, flexible connecting portion connects the first fixed part and the second fixed part, when temperature changes, flexible connecting portion produces deformation and drives ear's synchronizing moving of the second fixed part and optical diaphragm group.
In present pre-ferred embodiments, above-mentioned first fixed position in flexible connecting portion near optics side, second fixed position is in flexible connecting portion away from optics side, and when temperature raises, flexible connecting portion stretches laterally, and the second fixed part is towards moving away from the first fixed part direction.
In present pre-ferred embodiments, above-mentioned flexible connecting portion includes multiple first shape memory alloy strip of spread configuration, first shape memory alloy strip is V-shaped structure when room temperature state, including the first connecting portion being connected and the second connecting portion, first connecting portion is first end away from the end of the second connecting portion, second connecting portion is the second end away from the end of the first connecting portion, and first end is connected to the first fixed part, and the second end is connected to the second fixed part; Distance between first end and the second end becomes larger along with the rising of temperature.
In present pre-ferred embodiments, above-mentioned second fixed part is provided with locating dowel, and the ear of optical diaphragm group is provided with the location hole corresponding with locating dowel, and locating dowel is inserted in hole, location.
In present pre-ferred embodiments, above-mentioned first fixed position in flexible connecting portion away from optics side, second fixed position is in flexible connecting portion near optics side, and when temperature raises, flexible connecting portion internally shrinks, and the second fixed part moves towards near the first fixed part direction.
In present pre-ferred embodiments, above-mentioned flexible connecting portion includes multiple second shape memory alloy strip of spread configuration, second shape memory alloy strip linearly structure when room temperature state, including the first end and the second end that are positioned at two ends, first end is connected to the first fixed part, and the second end is connected to the second fixed part; Distance between first end and the second end tapers into along with the rising of temperature.
In present pre-ferred embodiments, above-mentioned backlight module includes backboard, backboard includes base plate and the sidewall being perpendicular to base plate extended around from base plate, in the space that optics and glue frame arrange base plate and sidewall surrounds, optics also includes reflector plate and light guide plate, reflector plate is positioned on base plate, and light guide plate is positioned on reflector plate, and optical diaphragm group is positioned on light guide plate.
In present pre-ferred embodiments, the marmem making flexible connecting portion contains Ni:55.4%～56.2%, C < 0.07, H < 0.005, O < 0.05, N < 0.05.
A kind of liquid crystal indicator, including above-mentioned backlight module.
The invention has the beneficial effects as follows, the backlight module of the present invention includes optics, glue frame and fixture, glue frame is arranged around optics, optics includes optical diaphragm group, the edge of optical diaphragm group is provided with multiple ear, glue frame is provided with the draw-in groove of storage ear, fixture includes the first fixed part, second fixed part and the flexible connecting portion being made up of marmem, first fixed part is fixing with glue frame to be connected, second fixed part is fixing with ear to be connected, flexible connecting portion connects the first fixed part and the second fixed part, when temperature changes, flexible connecting portion produces deformation and drives ear's synchronizing moving of the second fixed part and optical diaphragm group, optical diaphragm group is dynamically positioned by fixture, can ensure that optical diaphragm group at high temperature can move freely the moment, prevent warping phenomenon from producing, when vibrations, no matter it is room temperature or the condition of high temperature, fixture can prevent optical diaphragm group from escape in the draw-in groove of glue frame, avoid optical diaphragm group and crush liquid crystal panel, or optical diaphragm group itself is scraped off, it is effectively improved the quality of product.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, and can be practiced according to the content of description, and in order to the above-mentioned backlight module of the present invention and liquid crystal indicator and other purposes, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing a kind of backlight module.
Fig. 2 is Fig. 1 side structure schematic diagram at a normal temperature.
Fig. 3 is Fig. 2 schematic diagram after expanded by heating.
Fig. 4 is the ear of existing a kind of backlight module sectional view when entirely fixing.
Fig. 5 be the ear of existing a kind of backlight module semifixed time sectional view.
Fig. 6 is the backlight module of the first embodiment of the invention structural representation when room temperature state.
Fig. 7 is the partial structurtes schematic diagram of the fixture shown in 6.
Fig. 8 is the structural representation of the shape memory alloy strip being originally first embodiment of the invention.
Fig. 9 is the backlight module of first embodiment of the invention structural representation after temperature raises.
Figure 10 is the partial structurtes schematic diagram of the fixture 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 representation of the fixture of the backlight module of first embodiment of the invention.
Figure 13 is Figure 11 is the combinative structure schematic diagram of backlight module of first embodiment of the invention.
Figure 14 is the backlight module of the second embodiment of the invention structural representation when room temperature state.
Figure 15 is the partial structurtes schematic diagram of the fixture shown in 14.
Figure 16 is the backlight module of second embodiment of the invention structural representation after temperature raises.
Figure 17 is the partial structurtes schematic diagram of the fixture shown in 16.
Detailed description of the invention
For further setting forth that the present invention reaches technological means and effect that predetermined purpose is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to the present invention propose backlight module and the detailed description of the invention of liquid crystal indicator, structure, feature and effect thereof, describe in detail as after.
For the present invention aforementioned and other technology contents, feature and effect, can clearly appear from following cooperation in reference to the detailed description of the preferred embodiment of figure. By the explanation of detailed description of the invention, when can be reach technological means that predetermined purpose takes and effect is able to more deeply and concrete understanding to the present invention, however institute's accompanying drawing be only to provide with reference to and purposes of discussion, be not used for the present invention is any limitation as.
Fig. 6 is the backlight module of the first embodiment of the invention structural representation when room temperature state, and Fig. 7 is the partial structurtes schematic diagram of the fixture shown in 6, sees also Fig. 6 and Fig. 7, and backlight module includes backboard 220, optics 240 and glue frame 260. Backboard 220 includes base plate 221 and the sidewall 222 being perpendicular to base plate 221 extended around from base plate 221, in the space that optics 240 and glue frame 260 arrange base plate 221 and sidewall 222 surrounds. Specifically, optics 240 is arranged on the base plate 221 of backboard 220, and glue frame 260 is also disposed on the base plate 221 of backboard 220 and around optics 240. Optics 240 includes reflector plate 241, light guide plate 242 and optical diaphragm group 243, reflector plate 241, light guide plate 242 and optical diaphragm group 243 stacking are arranged on base plate 221, reflector plate 241 is positioned on base plate 221, light guide plate 242 is positioned on reflector plate 241, and optical diaphragm group 243 is positioned on light guide plate 242.
Optical diaphragm group 243 is general by the combination of one or more in the blooming pieces such as prismatic lens, diffusion sheet, brightening piece, polaroid brightness enhancement film, the edge of optical diaphragm group 243 is provided with multiple ear 244 for fixing optical diaphragm group 243, glue frame 260 is provided with multiple draw-in groove 261 coordinated for receiving ear 244 with ear 244, and optical diaphragm group 243 is connected with glue frame 260 by ear 244.
Backlight module also includes fixture 280, and fixture 280 includes the first fixed part the 281, second fixed part 282 and flexible connecting portion 283, and flexible connecting portion 283 connects the first fixed part 281 and the second fixed part 282. In the present embodiment, the first fixed part 281 is near the inside of backlight module and fixing with glue frame 260 is connected, and the second fixed part 282 is connected near the sidewall 222 of backboard 220 fixing with ear 244, but is not limited thereto.
Specifically, the two ends of the first fixed part 281 are fixed on the glue frame 260 surface away from base plate 221 side by fixing glue, but are not limited thereto, other any suitable fixed form.
Second fixed part 282 is provided with locating dowel 285 near the surface of ear 244, ear 244 is provided with the location hole 245 corresponding with locating dowel 285, locating dowel 285 is inserted in hole 245, location, the fixed form of the second fixed part 282 and ear 244 is also not limited, other any suitable fixed form.
In the present embodiment, flexible connecting portion 283 is made up of a kind of marmem. Marmem is a kind of intellectual material that can remember original shape, shape is had the ability of memory by this alloy, namely after the shape of alloy is changed, certain transition temperature is reached once temperature, it can change back to original shape again magic, and people call marmem the alloy with this specific function. 1963, the ratio of USN's Armament Research Establishment is strangled and is found in research work, in certain temperature range more higher than room temperature, a kind of Ni-Ti alloy silk is burnt till spring, then in cold water, it stretched or cast the shape such as square, triangle, being placed in the hot water of more than 40 DEG C again, this B alloy wire just reverts to original bullet spring shape. Finding successively later, some other alloy also has similar function. Every kind has a transition temperature with certain element by the marmem that certain weight ratio forms, more than this temperature, this alloy is processed into certain shape, then below transition temperature it is cooled to, after manually changing its shape, reheating more than transition temperature, this alloy will be automatically reverted to the shape being originally processed into more than transition temperature. Marmem is owing to having many excellent performances, thus is widely used in multiple fields such as Aero-Space, mechano-electronic, biologic medical and daily life.
This special phenomenon of the initial condition before the marmem formed by a certain percentage with certain element can be made it return to deformation by the method heated after being subject to a limited plastic deformation under lower than phase transformation temperature, is shape memory effect. From microcosmic, shape memory effect is the intrinsic Changing Pattern of crystal structure. Usual metal alloy is when solid-state, and atom arranges according to certain rule, and the atomic arrangement rule of marmem is then as the change of environmental condition and changes. Such as, when temperature drops to below certain critical temperature, atom arranges by a certain rule, and structure now is called martensitic phase; And when temperature is increased to more than certain critical temperature, the arrangement regulation of atom will change, atom arranges by another kind of rule again, is now called austenite phase or parent phase. The motive force that shape is recovered is to be produced by the difference of parent phase at the heating temperature with the free energy of martensitic phase. Shape memory effect is the phenomenon of the atom collective motion that martensitic phase transformation causes, when marmem is cooled to below Ms (martensite start) point, many martensite variants are generated in one crystal grain of parent phase, can there is self-coordinating in each variant growth process, therefore without macroscopic view change in volume during phase transformation.
In the present embodiment, fixture 280 is strip platy structure, the length direction of flexible connecting portion 283 is consistent with the length direction of fixture 280, and flexible connecting portion 283 lies along between the first fixed part 281 and the second fixed part 282 along the length direction of fixture 280.Flexible connecting portion 283 is such as stretched by a kind of variation with temperature or the marmem with double-pass memory effect that bounces back is made, double-pass memory effect refers to recovery high-temperature-phase shape when some marmem heats, and can recover again low-temperature phase shape during cooling. Current marmem has been obtained for fine exploitation, can control at-100 DEG C～100 DEG C any point alterations of form, the marmem such as making flexible connecting portion 283 contains Ni:55.4%～56.2%, C < 0.07, H < 0.005, O < 0.05, N is < when 0.05, it is possible to the effective temperature change value that controls is 20 DEG C～90 DEG C.
Fig. 8 is the structural representation of the shape memory alloy strip being originally first embodiment of the invention, refer to Fig. 6 to Fig. 8, flexible connecting portion 283 such as includes multiple first shape memory alloy strip 284 of spread configuration, first shape memory alloy strip 284 has first end 2841 and the second end 2842, first end 2841 is connected to the first fixed part 281, and the second end 2842 is connected to the second fixed part 282. There is between first end 2841 and the second end 2,842 first spacing distance L1 when room temperature state, first spacing distance L1 is the flexible connecting portion 283 width when room temperature state, it is also possible to regard the spacing distance between the first fixed part 281 and the second fixed part 282 when room temperature state as; Rising along with temperature, distance between first end 2841 and the second end 2842 can become larger, when arriving uniform temperature, first shape memory alloy strip 284 recovers high-temperature-phase shape, there is between first end 2841 and the second end 2,842 second spacing distance L2, second spacing distance L2 is the flexible connecting portion 283 width after temperature raises, it is also possible to regard the spacing distance between the first fixed part 281 and the second fixed part 282 after temperature raises as. In other words, in room temperature state, first fixed part 281 and the second fixed part 282 have the first spacing distance L1, along with the rising of temperature, flexible connecting portion 283 produces deformation, as stretched laterally, second fixed part 282 moves towards away from the first fixed part 281 direction, spacing distance between first fixed part 281 and the second fixed part 282 becomes larger, and when flexible connecting portion 283 recovers high-temperature-phase shape, the first fixed part 281 and the second fixed part 282 have the second spacing distance L2.
In the present embodiment, the second spacing distance L2 is more than the first spacing distance L1, and namely along with the rising of temperature, flexible connecting portion 283 launches to both sides, but is not limited thereto. Specifically, as shown in Figure 8, when room temperature state, the first shape memory alloy strip 284 such as V-shaped structure of flexible connecting portion 283, including the first connecting portion 2843 and the second connecting portion 2844 being connected, wherein, first end 2841 is first connecting portion 2843 end away from the second connecting portion 2844, and the second end 2842 is second connecting portion 2844 end away from the first connecting portion 2843. The length of the first connecting portion 2843 be A, the second connecting portion 2844 length be B, the first connecting portion 2843 and the second connecting portion 2844 have angle theta and can calculate the distance between first end 2841 and the second end 2842 according to A, B and θ. Such as when the length A of the first connecting portion 2843 is equal to length B and θ=60 ° of the second connecting portion 2844, L1=A (or B) under room temperature state, rising along with temperature, angle theta starts to become big, when angle theta=180 °, L2=2A (or 2B), now, the first shape memory alloy strip 284 ultimately forms linear structure.
Fig. 9 is the backlight module of first embodiment of the invention structural representation after temperature raises, Figure 10 is the partial structurtes schematic diagram of the fixture shown in 9, see also Fig. 9 and Figure 10, rising along with temperature, optical diaphragm group 243 be heated backward backboard 220 sidewall 222 direction expand, first fixed part 281 of fixture 280 secures with glue frame 260, thus without movement, flexible connecting portion 283 is by the impact of the rising of temperature, also can extend to sidewall 222 direction of backboard 220, drive the second fixed part 282 to draw close to sidewall 222 simultaneously, second fixed part 282 is fixing with the ear 244 of optical diaphragm group 243 to be connected, when optical diaphragm group 243 is when unidirectional linear thermal expansion length is equal to the stretch value of flexible connecting portion 283, ear 244 synchronizing moving of the second fixed part 282 and optical diaphragm group 243. being appreciated that and be again restored in the process of room temperature state in temperature, ear 244 synchronous backward of the second fixed part 282 and optical diaphragm group 243 moves. wherein, the linear thermal expansion length of optical diaphragm group 243 can calculate according to the coefficient of expansion of optical diaphragm group 243, diaphragm length and temperature variation etc. the ear 244 of same direction (width such as the backlight module) both sides of optical diaphragm group 243 all adopt fixture 280 fixing or wherein side entirely fix opposite side and adopt fixture 280 to fix, in this no limit.
Figure 11 is the decomposition texture schematic diagram of the backlight module of first embodiment of the invention, Figure 12 is the structural representation of the fixture of the backlight module of first embodiment of the invention, Figure 13 is Figure 11 is the combinative structure schematic diagram of backlight module of first embodiment of the invention, see also Figure 11 to Figure 13, first by glue frame 260 during assembling backlight module, reflector plate 241, the space that light guide plate 242 and optical diaphragm group 243 etc. put into the base plate 221 of backboard 220 and sidewall 222 surrounds, glue frame 260 near draw-in groove 261 arranges fixed structure such as fixing glue 290 near backlight unit side, the fixed area 286 at the first fixed part 281 two ends of fixture 280 is fixed on glue frame 260 by fixing glue 290, simultaneously, the locating dowel 285 making the second fixed part 282 of fixture 280 is arranged in the hole, location 245 of ear 244.
Figure 14 is the backlight module of the second embodiment of the invention structural representation when room temperature state, Figure 15 is the partial structurtes schematic diagram of the fixture shown in 14, Figure 16 is the backlight module of second embodiment of the invention structural representation after temperature raises, Figure 17 is the partial structurtes schematic diagram of the fixture shown in 16, see also Figure 14 and Figure 17, the backlight module of the second embodiment is roughly the same with first embodiment, it is different in that, the fixture 380 of the backlight module of the second embodiment is different from first embodiment, and the fixed form of fixture 380 is also different from first embodiment.
Specifically, fixture 380 includes the first fixed part the 381, second fixed part 382 and flexible connecting portion 383, fixture 380 is strip platy structure, the length direction of flexible connecting portion 383 is consistent with the length direction of fixture 380, and flexible connecting portion 383 extends along the length direction of fixture 380 and is connected between the first fixed part 381 and the second fixed part 382. In the present embodiment, the first fixed part 381 is near the sidewall 222 of backboard 220 and fixing with glue frame 260 is connected, and the second fixed part 382 is connected near the inside of backlight module fixing with ear 244.Specifically, the two ends of the first fixed part 381 are fixed on the glue frame 260 surface away from base plate 221 side by first fixed structure 391 (such as fixing glue), second fixed part 382 is connected also by the second fixed structure 392 (such as fixing glue) is fixing with ear 244 near the surface of ear 244, but is not limited thereto.
In the present embodiment, flexible connecting portion 383 such as includes multiple second shape memory alloy strip 384 of spread configuration, second shape memory alloy strip 384 has first end 3841 and the second end 3842, first end 3841 is connected to the first fixed part 381, and the second end 3842 is connected to the second fixed part 382. Between first end 3841 and the second end 3842, there is the 3rd spacing distance L3 when room temperature state, 3rd spacing distance L3 is the flexible connecting portion 383 width when room temperature state, it is also possible to regard the spacing distance between the first fixed part 381 and the second fixed part 382 when room temperature state as; Rising along with temperature, distance between first end 3841 and the second end 3842 diminishes, when arriving uniform temperature, second shape memory alloy strip 384 recovers high-temperature-phase shape, there is between first end 3841 and the second end 3842 the 4th spacing distance L4,4th spacing distance L4 is the flexible connecting portion 383 width after temperature raises, it is also possible to regard the spacing distance between the first fixed part 381 and the second fixed part 382 after temperature raises as. In other words, in room temperature state, first fixed part 381 and the second fixed part 382 have the 3rd spacing distance L3, along with the rising of temperature, flexible connecting portion 383 produces deformation, as internally shunk, second fixed part 382 moves towards near the first fixed part 281 direction, spacing distance between first fixed part 381 and the second fixed part 382 tapers into, and when flexible connecting portion 383 recovers high-temperature-phase shape, the first fixed part 381 and the second fixed part 382 have the 4th spacing distance L4.
In the present embodiment, the 4th spacing distance L4 is less than the 3rd spacing distance L3, and namely along with the rising of temperature, flexible connecting portion 383 is to contract. specifically, such as Figure 14, shown in 15, when room temperature state, second shape memory alloy strip 384 linearly structure of flexible connecting portion 383, rising along with temperature, optical diaphragm group 243 be heated backward backboard 220 sidewall 222 direction expand, first fixed part 381 of fixture 380 secures with glue frame 260, thus without movement, flexible connecting portion 383 is become Wave-shaped structural by the impact of the rising of temperature by linear structure, spacing distance between first end 3841 and the second end 3842 tapers into, drive the second fixed part 382 to draw close to sidewall 222 simultaneously, second fixed part 382 is fixing with the ear 244 of optical diaphragm group 243 to be connected, when optical diaphragm group 243 is when unidirectional linear thermal expansion length is equal to the stretch value of flexible connecting portion 383, ear 244 synchronizing moving of the second fixed part 382 and optical diaphragm group 243. being appreciated that and be again restored in the process of room temperature state in temperature, ear 244 synchronous backward of the second fixed part 382 and optical diaphragm group 243 moves.
The backlight module of the present invention includes optics 240, glue frame 260 and fixture 280 (380), glue frame 260 is arranged around optics 240, optics 240 includes optical diaphragm group 243, the edge of optical diaphragm group 243 is provided with multiple ear 244, glue frame 260 is provided with the draw-in groove 261 of storage ear 244, fixture 280 (380) includes the first fixed part 281 (381), second fixed part 282 (382) and the flexible connecting portion 283 (383) being made up of marmem, first fixed part 281 (381) is fixing with glue frame 260 to be connected, second fixed part 282 (382) is fixing with ear 244 to be connected, flexible connecting portion 283 (383) connects the first fixed part 281 (381) and the second fixed part 282 (382), when temperature changes, flexible connecting portion 283 (383) produces deformation and drives ear 244 synchronizing moving of the second fixed part 282 (382) and optical diaphragm group 243, by fixture 280 (380) dynamically location optical diaphragm group 243, can ensure that optical diaphragm group 243 at high temperature can move freely the moment, prevent warping phenomenon from producing.When vibrations, no matter it is room temperature or the condition of high temperature, fixture 280 (380) can prevent optical diaphragm group 243 from escape in the draw-in groove 261 of glue frame 260, avoid optical diaphragm group 243 and crush the liquid crystal panel being positioned above, or optical diaphragm group 243 is scraped off itself, it is effectively improved the quality of product.
Above backlight module provided by the present invention and liquid crystal indicator are described in detail, principles of the invention and embodiment are set forth by specific case used herein, and the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention; Simultaneously for one of ordinary skill in the art, according to the thought of the present invention, all will change in specific embodiments and applications, in sum, this specification content should not be construed as limitation of the present invention.
Claims (9)
1. a backlight module, including optics (240) and glue frame (260), described glue frame (260) is around described optics (240), described optics (240) includes optical diaphragm group (243), the edge of described optical diaphragm group (243) is provided with multiple ear (244), described glue frame (260) is provided with the draw-in groove (261) receiving described ear (244), it is characterized in that, described backlight module also includes fixture (280, 380), described fixture (280, 380) the first fixed part (281 is included, 381), second fixed part (282, 382) the flexible connecting portion (283 and by marmem made, 383), described first fixed part (281, 381) fixing with described glue frame (260) it is connected, described second fixed part (282, 382) fixing with described ear (244) it is connected, described flexible connecting portion (283, 383) described first fixed part (281 is connected, 381) and described second fixed part (282, 382), the described flexible connecting portion (283 when temperature changes, 383) produce deformation and drive described second fixed part (282, 382) with ear (244) synchronizing moving of described optical diaphragm group (243).
2. backlight module as claimed in claim 1, it is characterized in that, described first fixed part (281) is positioned at described flexible connecting portion (283) near described optics (240) side, described second fixed part (282) is positioned at described flexible connecting portion (283) away from described optics (240) side, when temperature raises, described flexible connecting portion (283) is stretched laterally, and described second fixed part (282) is towards moving away from described first fixed part (281) direction.
3. backlight module as claimed in claim 2, it is characterized in that, described flexible connecting portion (283) includes multiple first shape memory alloy strip (284) of spread configuration, described first shape memory alloy strip (284) V-shaped structure when room temperature state, including the first connecting portion (2843) being connected and the second connecting portion (2844), described first connecting portion (2843) is first end (2841) away from the end of described second connecting portion (2844), described second connecting portion (2844) is the second end (2842) away from the end of described first connecting portion (2843), described first end (2841) is connected to described first fixed part (281), described the second end (2842) is connected to described second fixed part (282), distance between described first end (3841) and described the second end (3842) becomes larger along with the rising of temperature.
4. backlight module as claimed in claim 2, it is characterized in that, described second fixed part (282) is provided with locating dowel (285), the ear (244) of described optical diaphragm group (243) is provided with the location hole (245) corresponding with described locating dowel (285), and described locating dowel (285) is inserted in hole, described location (245).
5. backlight module as claimed in claim 1, it is characterized in that, described first fixed part (381) is positioned at described flexible connecting portion (383) away from described optics (240) side, described second fixed part (382) is positioned at described flexible connecting portion (383) near described optics (240) side, when temperature raises, described flexible connecting portion (383) is internally shunk, and described second fixed part (382) is moved towards near described first fixed part (281) direction.
6. backlight module as claimed in claim 5, it is characterized in that, described flexible connecting portion (383) includes multiple second shape memory alloy strip (384) of spread configuration, described second shape memory alloy strip (384) linearly structure when room temperature state, including the first end (3841) and the second end (3842) that are positioned at two ends, described first end (3841) is connected to described first fixed part (381), and described the second end (3842) is connected to described second fixed part (382); Distance between described first end (3841) and described the second end (3842) tapers into along with the rising of temperature.
7. backlight module as claimed in claim 1, it is characterized in that, described backlight module includes backboard (220), described backboard (220) includes base plate (221) and the sidewall (222) being perpendicular to base plate (221) extended around from base plate (221), in the space that described optics (240) and described glue frame (260) arrange described base plate (221) and described sidewall (222) surrounds, described optics (240) also includes reflector plate (241) and light guide plate (242), described reflector plate (241) is positioned on described base plate (221), described light guide plate (242) is positioned on described reflector plate (241), described optical diaphragm group (243) is positioned on described light guide plate (242).
8. backlight module as claimed in claim 1, is characterized in that, the marmem making described flexible connecting portion (283,383) contains Ni:55.4%～56.2%, C < 0.07, H < 0.005, O < 0.05, N < 0.05.
9. a liquid crystal indicator, is characterized in that, including the backlight module as described in any one of claim 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610040705.5A CN105676524B (en) | 2016-01-21 | 2016-01-21 | Backlight module and liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610040705.5A CN105676524B (en) | 2016-01-21 | 2016-01-21 | Backlight module and liquid crystal display device |
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| CN105676524A true CN105676524A (en) | 2016-06-15 |
| CN105676524B CN105676524B (en) | 2018-12-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108563064A (en) * | 2018-01-05 | 2018-09-21 | 京东方科技集团股份有限公司 | Backlight module and its assemble method, display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090147182A1 (en) * | 2005-09-26 | 2009-06-11 | Au Optronics Corp. | Backlight module and diffusion assembly |
| CN201652215U (en) * | 2010-03-05 | 2010-11-24 | 华映光电股份有限公司 | Diaphragm locating mechanism of backlight module |
| US20100328927A1 (en) * | 2009-06-30 | 2010-12-30 | Au Optronics Corporation | Frame structure, backlight module and display 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 |
-
2016
- 2016-01-21 CN CN201610040705.5A patent/CN105676524B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090147182A1 (en) * | 2005-09-26 | 2009-06-11 | Au Optronics Corp. | Backlight module and diffusion assembly |
| US20100328927A1 (en) * | 2009-06-30 | 2010-12-30 | Au Optronics Corporation | Frame structure, backlight module and display module |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108563064A (en) * | 2018-01-05 | 2018-09-21 | 京东方科技集团股份有限公司 | Backlight module and its assemble method, display device |
| 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 |
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| CN105676524B (en) | 2018-12-18 |
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