CN107121839A - A kind of fixing means of backlight assembly, liquid crystal display and backlight assembly - Google Patents
A kind of fixing means of backlight assembly, liquid crystal display and backlight assembly Download PDFInfo
- Publication number
- CN107121839A CN107121839A CN201710442886.9A CN201710442886A CN107121839A CN 107121839 A CN107121839 A CN 107121839A CN 201710442886 A CN201710442886 A CN 201710442886A CN 107121839 A CN107121839 A CN 107121839A
- Authority
- CN
- China
- Prior art keywords
- light guide
- guide plate
- groove
- backlight assembly
- plate frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses the fixing means of a kind of backlight assembly, liquid crystal display and backlight assembly, wherein backlight assembly includes：Light guide plate and light guide plate frame；The light guide plate frame is provided with groove with light guide plate contact surface, and the groove is used to form vacuum space between the light guide plate frame and the light guide plate.By the above-mentioned means, light guide plate frame can be fixed on light guide plate by the present invention, this fixed form is more solid and reliable, can be prevented effectively from using directly it is gluing by the way of when, the problem of light guide plate frame that glue aging is caused comes off.
Description
Technical field
The present invention relates to backlight assembly field, more particularly to a kind of backlight assembly, liquid crystal display and backlight assembly
Fixing means.
Background technology
With advances in technology, the lightening of backlight assembly turns into a developing direction, is ensureing that backlight assembly is lightening
While, how each component to be firmly fixed together, as urgent problem to be solved.
In the prior art, generally using it is direct it is gluing by the way of backlight assembly is fixed, namely in light guide plate frame
A glue is applied with light guide plate side, is secured the two together.However, as time goes by, glue can because of steam and
Aging occurs for the factors such as illumination, and this may result in light guide plate frame and is disengaged with light guide plate.
It can be seen that, prior art is further improved.
The content of the invention
The present invention solves the technical problem of provide consolidating for a kind of backlight assembly, liquid crystal display and backlight assembly
Determine method, can solve the problem that in the prior art, when light guide plate frame and light guide plate are fixed by the way of directly gluing, glue
The problem of light guide plate frame that water aging is caused comes off.
In order to solve the above technical problems, one aspect of the present invention is：A kind of backlight assembly is provided.
Wherein, the backlight assembly includes：
Light guide plate and light guide plate frame；
The light guide plate frame and light guide plate contact surface are provided with groove, the groove be used for the light guide plate frame with
Vacuum space is formed between the light guide plate.
Wherein, another surface of light guide plate frame is additionally provided with stomata, and the stomata is connected with the groove, and for connecting
Connect vacuum extractor.
Wherein, the number of the groove in the light guide plate frame is one or more.
Wherein, when the number of the groove is multiple, it is interconnected or does not connect between groove mutually.
Wherein, the cross sectional shape of the groove is one kind in rectangle, circular or triangle.
Wherein, the length of the groove is 0.2-0.98 times of light guide plate frame length, and the width of groove is guide-lighting edges of boards
0.2-0.8 times of width of frame, the depth of the groove is 0.2-0.6 times of light guide plate bezel height.
Wherein, the light guide plate frame includes day side center and two both sides centers, and the light guide plate material is glass
Glass.
Above-mentioned technical problem is solved, the technical scheme that the present invention is also used is：A kind of liquid crystal display is provided, its
In,
Including the backlight assembly as described in any one.
Above-mentioned technical problem is solved, the technical scheme that the present invention is also used is：A kind of fixation of backlight assembly is provided
Method.
Wherein, methods described includes：
Reeded side is set in light guide plate frame and coats one layer of glue, and is adhesive on light guide plate；
The cavity formed by stomata to groove with light guide plate side wall is vacuumized；
After the vacuum terminates, the stomata is sealed.
Wherein, at the end of the vacuum, the groove and the pressure in the cavity of light guide plate side wall formation
For 10-104Pa, the sealing means of the stomata are one or both of coating adhesive or filling sealing-plug.
The beneficial effects of the invention are as follows：By the present invention in that being formed between groove and light guide plate on light guide plate frame has
The mode in the space of certain vacuum degree, the light guide plate frame is fixed on the light guide plate, this to pass through groove and leaded light
The method that light guide plate frame is fixed on light guide plate by the gas pressure between plate in shape space with atmospheric pressure difference is not only firm
Gu it is reliable, and can be prevented effectively from using it is direct it is gluing by the way of when, the problem of light guide plate frame that glue aging is caused comes off.
Brief description of the drawings
Fig. 1 is a kind of structure chart of the better embodiment of backlight assembly one of the invention；
Fig. 2 is the structural representation of preferred embodiment when light guide plate frame 21 is not connected with light guide plate 1 in Fig. 1；
Fig. 3 is the horizontal cross-section structural representation of one preferred embodiment when light guide plate frame 31 is connected with light guide plate 1；
Fig. 4 is the vertical section structural representation of one preferred embodiment when light guide plate frame 41 is connected with light guide plate 1；
Fig. 5 is light guide plate frame 21 and the structural representation of a better embodiment of light guide plate contact surface 212 in Fig. 1.
Embodiment
Fig. 1 and Fig. 2 are refer to, backlight assembly of the invention includes：Light guide plate 1 and light guide plate frame 2；The guide-lighting edges of boards
Frame 2 is provided with groove 211 with the contact surface 212 of light guide plate 1, and the groove 211 is used in the light guide plate frame 2 and the leaded light
Vacuum space is formed between plate 1.
In the present invention, formed vacuum space mode can be by light guide plate frame 2 described in vacuum pumped with it is described
Air in the formation of light guide plate 1 space, forms the vacuum space；Can also be by being carried out to light guide plate 1 and light guide plate frame 2
Fitted after heating, then the mode cooled down is so that the light guide plate frame 2 and the air pressure in the light guide plate 1 formation space are less than
Ambient pressure, and light guide plate frame 2 is brought into close contact with light guide plate 1；Can also be by the way that light guide plate 1 and light guide plate frame 2 be existed
Fitted in cavity with certain vacuum degree so that vacuum space is formed between light guide plate frame 2 and light guide plate 1, then is increased suddenly
Plus in the cavity gas pressure mode, light guide plate frame 2 is brought into close contact with light guide plate 1；In a word, as long as leaded light can be made
There is certain pressure differential with external environment with the formation space of light guide plate 1 in edges of boards frame 2.
In one embodiment, the light guide plate frame 2 and the light guide plate 1 formation space are made by the way of vacuumizing
During with certain vacuum, another surface of light guide plate frame 2 is additionally provided with stomata 213, the stomata 213 and the groove 211
Connection, and for connecting vacuum extractor.Specifically, another surface refers to stomata 213 with groove 211 not in same table
Face, the position of stomata 213, size and shape can be configured as needed.
Fig. 3 is refer to, Fig. 3 is that the horizontal cross-section structure of one preferred embodiment when tabula rasa frame 31 is connected with light guide plate 1 is shown
It is intended to, the groove 311 is step groove, including detent 3111 and vacuum groove 3112；The side wall 12 of the light guide plate 1 with
The formation cavity of vacuum groove 3112 is used to form the space with certain vacuum degree；It is recessed that the light guide plate 1 is fixed on the positioning
In groove 3111, the first contact surface 3121 and the second contact surface 3122 of the contact surface 312 are contacted with the light guide plate 1, and institute
The positioning end for stating detent 3111 is oppositely arranged, and direction is perpendicular to the length direction of the light guide plate frame 31, to accommodating
Light guide plate 1 therein plays certain position-limiting action, during being vacuumized, and light guide plate 1 can be avoided to be led along described
The length direction movement of tabula rasa frame 31, makes vacuum more efficiently, reliably, and after evacuation, light guide plate 1 and leaded light
The fixed relation of edges of boards frame 31 is not easy to be destroyed.
Further, Fig. 4 is refer to, Fig. 4 is that the vertical of one preferred embodiment when tabula rasa frame 41 is connected with light guide plate 1 is cut
Face structural representation, the groove 411 is step groove, including detent 4111 and vacuum groove 4112；The light guide plate 1
Side wall 12 is used to form the space with certain vacuum degree with the formation cavity of vacuum groove 4112；The light guide plate 1 is fixed on institute
State in detent 4111, the first contact surface 4121 and the second contact surface 4122 and the light guide plate 1 of the contact surface 412 connect
Touch, and the positioning end of the detent 4111 is oppositely arranged, and direction is perpendicular to the short transverse of the light guide plate frame 41,
Certain position-limiting action is played to housing light guide plate 1 therein, during being vacuumized, the edge of light guide plate 1 can be avoided
The short transverse movement of the light guide plate frame 41, makes vacuum more efficiently, reliably, and after evacuation, light guide plate 1
It is not easy to be destroyed with the fixed relation of light guide plate frame 41.Further, the detent 4111 can be set
Two groups of positioning ends for being correspondingly arranged, are respectively perpendicular to the length direction and short transverse of the light guide plate frame 41, are vacuumizing
During, light guide plate 1 can be avoided to be moved along the height and length direction of the light guide plate frame 41, more preferable positioning is reached
Effect, is easy to the progress of vacuum pumping.Certainly, the size of the positioning end, shape and material can be set as needed
Meter.
The number that refer to the groove 211 in Fig. 2 and Fig. 5, the light guide plate frame 2 is one or more.One
In individual embodiment, when the number of the groove 211 is multiple, it is interconnected or does not connect mutually, different grooves between groove 211
The distance between 211 is identical or different；When being interconnected between the groove 211 by connecting hole 214, then one need to be only set
Individual stomata 213；When the groove 211 is not interconnected, then the number of stomata 213 is set according to the number of groove 211.
For by being fitted after being heated to light guide plate 1 and light guide plate frame 2, then the mode cooled down cause it is described
Light guide plate frame 2 and the air pressure in the light guide plate 1 formation space are less than ambient pressure；And correspondingly by that light guide plate 1 and will lead
Tabula rasa frame 2 is fitted in the cavity with certain vacuum degree so that vacuum is formed between light guide plate frame 2 and light guide plate 1 empty
Between, then increase the mode of gas pressure in the cavity suddenly, stomata 213 need not be set.
Further, the cross sectional shape of the groove 211 is one kind in rectangle, circular or triangle, for ease of production
Processing, it is in one embodiment, the cross sectional shape design of groove 211 is rectangular, certainly, according to demand can be with design interface shape
The different groove 211 of shape.
Further, the length of the groove 211 is 0.2-0.98 times of the length of light guide plate frame 2, the width of groove 211
For 0.2-0.8 times of the width of light guide plate frame 2, the depth of the groove 211 is 0.2-0.6 times of the height of light guide plate frame 2.It is logical
The setting of above-mentioned dimensional parameters is crossed, the area of light guide plate frame 2 and the contact surface 212 of light guide plate 1 is more suitable, on the one hand ensure institute
Stating contact surface 212 has enough area coating glue to be fixed with light guide plate 1；On the other hand, groove 211 and the light guide plate
Vacuum space volume is formed between 1 suitable, can be cooperated from different vacuum, to adjust light guide plate frame 2 and leaded light
Active force between plate 1.
Further, the light guide plate frame 2 can overall frame or multiple frames splicing obtain.
In one embodiment, the light guide plate frame 2 includes day side center 22 and two both sides centers 21.
Above-mentioned technical problem is solved, the technical scheme that the present invention is also used is：A kind of liquid crystal display is provided, its
In, including the backlight assembly as described in any one.
Can be while ensureing that backlight assembly is lightening, by light guide plate using the liquid crystal display of the backlight assembly
Together with frame 2 is firmly fixed with light guide plate 1.
Above-mentioned technical problem is solved, the technical scheme that the present invention is also used is：A kind of fixation of backlight assembly is provided
Method, wherein, methods described includes：
One layer of glue is coated in side of the light guide plate frame 2 provided with groove 211, and is adhesive in the side wall of light guide plate 1
On 12；Also glue is applied to light guide plate frame 2 and on the contact surface 212 of light guide plate 1, on the one hand energy will be in light guide plate frame
2 are fixed with light guide plate 1, are easy to vacuumize process；Importantly, due to when light guide plate frame 2 is contacted with light guide plate 1,
It cannot be guaranteed that contact surface smooth enough, it is impossible to ensure sealing, therefore, one layer of glue of coating can play certain sealing function,
Make the space formed between groove 211 and the side wall 12 of the light guide plate 1 relative closed, be easy to entering for follow-up vacuum pumping
OK.
Groove 211 and the cavity of the side wall formation of light guide plate 1 are vacuumized by stomata 213；
After the vacuum terminates, the stomata 213 is sealed.
In one embodiment, at the end of the vacuum, the groove 211 and the shape of 1 side wall of light guide plate 12
Into cavity in pressure be 10-104Pa, according to the size of the active force between required light guide plate frame 2 and light guide plate 1,
It can be realized by adjusting the pressure in the cavity that the groove 211 is formed with the light guide plate 1, with adjusting the groove
211 sizes are compared, and this method is more convenient, flexible.
When by the way of vacuumizing, the sealing property of system is steady to light guide plate frame 2 and the intermolecular forces of light guide plate 1
Surely play a key effect, in the present invention, the sealing means of the stomata 213 are one kind in coating adhesive or filling sealing-plug
Or two kinds, in one embodiment, vacuumize after end, the filling sealing-plug in stomata 213, one end of sealing-plug enters guide-lighting
Edges of boards frame 2 is formed in space with the light guide plate 1, and the other end is exposed in external atmospheric pressure, because external air pressure is more than leaded light
Edges of boards frame 2 is fixed with the air pressure in the light guide plate 1 formation space, the sealing-plug, meanwhile, applied around the sealing-plug
Adhesive is covered, sealing effectiveness is further improved.
Specifically, calculating the active force of fitting between the light guide plate 1 and light guide plate frame 2 for an embodiment.
In this embodiment, the size of both sides center 21：100mm*3mm*3mm, the section of groove 211：98mm*2mm；In its side
The size of frame 22：156mm*3mm*3mm, groove (not shown) section：148mm*2mm；The size 150mm*100mm*3mm of light guide plate 1,
2500 kilograms per cubic meter of density.
At the end of vacuum, the groove (not shown) of day side center 22 and the side wall formation of light guide plate 1
Pressure in cavity is 10-104Pa, then in the groove (not shown) of day side center 22 and the light guide plate 1 formation space
Pressure and the scope of difference of ambient pressure be P1=105-9*104Pa；
The pressure and ambient pressure that the groove (not shown) of day side center 22 is formed in space with the light guide plate 1 are poor
Active area be groove (not shown) area of section S1=0.148*0.002=2.96*10-4m2；
Therefore, the active force of fitting between light guide plate 1 and day side center 22 is
F1=P1*S1=26.64-29.6N.
Similarly, the active force of fitting between light guide plate 1 and both sides center 21 is
F1=17.64-19.6N.
And light guide plate gravity=2500*0.15*0.1*0.003*9.8=1.1025N；
As can be seen that the active force of fitting between light guide plate 1 and light guide plate frame 2 is far longer than light guide plate gravity, so
The intensity that light guide plate 1 is fitted with light guide plate frame 2 using the method for the present invention is fine.
In summary, by the present invention in that being formed between groove and light guide plate on light guide plate frame has certain vacuum degree
Space mode, the light guide plate frame is fixed on the light guide plate, this to pass through shape between groove and light guide plate empty
The method that light guide plate frame is fixed on light guide plate by interior gas pressure with atmospheric pressure difference is not only solid and reliable, and energy
Enough be prevented effectively from using directly it is gluing by the way of when, the problem of light guide plate frame that glue aging is caused comes off.
Embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this
Equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, is included within the scope of the present invention.
Claims (10)
1. a kind of backlight assembly, it is characterised in that described device includes：
Light guide plate and light guide plate frame；
The light guide plate frame and light guide plate contact surface are provided with groove, the groove be used for the light guide plate frame with it is described
Vacuum space is formed between light guide plate.
2. backlight assembly as claimed in claim 1, it is characterised in that another surface of light guide plate frame is additionally provided with stomata,
The stomata is connected with the groove, and for connecting vacuum extractor.
3. backlight assembly as claimed in claim 1, it is characterised in that the number of the groove in the light guide plate frame is
It is one or more.
4. backlight assembly as claimed in claim 2, it is characterised in that when the number of the groove is multiple, between groove
It is interconnected or does not connect mutually.
5. backlight assembly as claimed in claim 1, it is characterised in that the cross sectional shape of the groove is rectangle, circle or three
One kind in angular.
6. backlight assembly as claimed in claim 1, it is characterised in that the length of the groove is light guide plate frame length
0.2-0.98 times, the width of groove is 0.2-0.8 times of light guide plate border width, and the depth of the groove is high for light guide plate frame
0.2-0.6 times of degree.
7. backlight assembly as claimed in claim 1, it is characterised in that the light guide plate frame includes day side center and two
Individual both sides center, the light guide plate material is glass.
8. a kind of liquid crystal display, it is characterised in that including the backlight assembly as described in any one of claim 1~7.
9. a kind of fixing means of backlight assembly, it is characterised in that methods described includes：
Reeded side is set in light guide plate frame and coats one layer of glue, and is adhesive on light guide plate；
The cavity formed by stomata to groove with light guide plate side wall is vacuumized；
After the vacuum terminates, the stomata is sealed.
10. the fixing means of backlight assembly as claimed in claim 9, it is characterised in that at the end of the vacuum, institute
It is 10-10 that groove, which is stated, with the pressure in the cavity of light guide plate side wall formation4Pa, the sealing means of the stomata are coating adhesive
One or both of glutinous agent or filling sealing-plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710442886.9A CN107121839A (en) | 2017-06-13 | 2017-06-13 | A kind of fixing means of backlight assembly, liquid crystal display and backlight assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710442886.9A CN107121839A (en) | 2017-06-13 | 2017-06-13 | A kind of fixing means of backlight assembly, liquid crystal display and backlight assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107121839A true CN107121839A (en) | 2017-09-01 |
Family
ID=59729975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710442886.9A Pending CN107121839A (en) | 2017-06-13 | 2017-06-13 | A kind of fixing means of backlight assembly, liquid crystal display and backlight assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107121839A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100165240A1 (en) * | 2008-12-31 | 2010-07-01 | Min-Su Cho | Liquid crystal display device |
| CN201562422U (en) * | 2009-12-01 | 2010-08-25 | 福建华映显示科技有限公司 | Display module |
| CN203930107U (en) * | 2014-06-13 | 2014-11-05 | 华为技术有限公司 | A kind of light guide plate |
| CN106405940A (en) * | 2016-12-06 | 2017-02-15 | 深圳市华星光电技术有限公司 | Backlight module, liquid crystal display module and television |
-
2017
- 2017-06-13 CN CN201710442886.9A patent/CN107121839A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100165240A1 (en) * | 2008-12-31 | 2010-07-01 | Min-Su Cho | Liquid crystal display device |
| CN201562422U (en) * | 2009-12-01 | 2010-08-25 | 福建华映显示科技有限公司 | Display module |
| CN203930107U (en) * | 2014-06-13 | 2014-11-05 | 华为技术有限公司 | A kind of light guide plate |
| CN106405940A (en) * | 2016-12-06 | 2017-02-15 | 深圳市华星光电技术有限公司 | Backlight module, liquid crystal display module and television |
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Application publication date: 20170901 |
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