CN106764713A - The backlight module and display device of a kind of application flexible glue material - Google Patents
The backlight module and display device of a kind of application flexible glue material Download PDFInfo
- Publication number
- CN106764713A CN106764713A CN201710112188.2A CN201710112188A CN106764713A CN 106764713 A CN106764713 A CN 106764713A CN 201710112188 A CN201710112188 A CN 201710112188A CN 106764713 A CN106764713 A CN 106764713A
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- China
- Prior art keywords
- center
- flexible glue
- glue material
- backlight module
- application flexible
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- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention discloses the backlight module and display device of a kind of application flexible glue material, the backlight module includes a center, the center includes center body and is extended laterally in the middle part of center body and the extension edge for being contacted with display screen, the bottom of the center body is used to be contacted with backboard, the center uses flexible glue material, and the flexible glue material is TPV.The present invention makes center using flexible glue material, save artificial station, system production efficiency is improved, and is avoided traditional fiberglass reinforced plastics fracture and is fallen the quality risk that bits produce foreign matter in screen, saved mass of system cost and the production cost in the production cycle.
Description
Technical field
The present invention relates to backlight display field, more particularly to a kind of application flexible glue material backlight module and display device.
Background technology
At present, plastics module center is commonly used in the popular down straight aphototropism mode set of in the market, material is fiberglass reinforced
Plastics, because module center need to be assembled together with screen body glass, so rigid plastic surface needs patch buffering, anti-skidding silica gel
Bar, being contacted with metal backing also needs to paste foam.Therefore the material of whole module center includes some, and need to increase multiple artificial
Station is pasted, and than relatively time-consuming, effort, causes operating efficiency reduction and cost.In addition, what fiberglass reinforced plastics were made
Module center is also easy to produce batch cutting edge of a knife or a sword because of thin-walled, during injection moulding, prunes the chip after batch cutting edge of a knife or a sword because electrostatic interaction is readily adsorbed in center
On, during assembling module, chip and floating fibre are easily fallen into glass, produce screen body foreign matter, cause production and quality to perplex.And this glass
Reinforced plastics does not note slightly being easy to the cracking in injecting machine material tube when processing, and the module center produced is assembled in the later stage
It is middle to be broken.
Therefore, prior art has yet to be improved and developed.
The content of the invention
In view of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of backlight module of application flexible glue material
And display device, it is intended to the problems such as solving low existing manufacturing backlight module efficiency, high cost, easily produce quality risk.
Technical scheme is as follows：
A kind of backlight module of application flexible glue material, wherein, including a center, the center is including center body and in center
Body middle part extends laterally and the extension edge for being contacted with display screen, and the bottom of the center body is used to be contacted with backboard,
The center uses flexible glue material, and the flexible glue material is TPV.
The backlight module of described application flexible glue material, wherein, the tensile strength of the center is in 40 ~ 47MPa.
The backlight module of described application flexible glue material, wherein, the elongation at break of the center is 500 ~ 540%.
The backlight module of described application flexible glue material, wherein, the tearing strength of the center is 58 ~ 65KN/m.
The backlight module of described application flexible glue material, wherein, the shore hardness of the center Shao A85 ~ Shao D45 it
Between.
The backlight module of described application flexible glue material, wherein, the proportion of the center is 0.8-0.93.
The backlight module of described application flexible glue material, wherein, the molding shrinkage of the center is 1% ~ 1.2%.
The backlight module of described application flexible glue material, wherein, the center is 0.65- with the coefficient of friction of display screen
1.04。
The backlight module of described application flexible glue material, wherein, the backlight module is down straight aphototropism mode set.
A kind of display device, wherein, including the as above backlight module described in any one.
Beneficial effect：Backlight module of the invention makes center using flexible glue material, saves artificial station, improves and is
System production efficiency, and avoid traditional fiberglass reinforced plastics fracture and fall the quality risk that bits produce foreign matter in screen, save
Mass of system cost and production cost in production cycle.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the backlight module preferred embodiment of application flexible glue material of the invention.
Specific embodiment
The present invention provides the backlight module and display device of a kind of application flexible glue material, to make the purpose of the present invention, technology
Scheme and effect are clearer, clear and definite, and the present invention is described in more detail below.It should be appreciated that described herein specific
Embodiment is only used to explain the present invention, is not intended to limit the present invention.
Fig. 1 is referred to, Fig. 1 is a kind of structural representation of the backlight module preferred embodiment of application flexible glue material of the invention
Figure, as illustrated, it includes a center, the center includes center body and extends laterally and be used in the middle part of center body
The extension edge contacted with display screen（That is in Fig. 1 at A）, the bottom of the center body（That is in Fig. 1 at B）For being connect with backboard
Touch, the center uses flexible glue material, the flexible glue material is TPV.
By the present invention in that using TPV material（Flexible glue material）Center, the traditional module center of substitution sticks on
The scheme of silica gel strip, foam, is used using the direct injection moulding of the flexible glue material and assembling, be can reach saving raw material and is used
Amount, saving auxiliary material, the Expected Results of artificial station, and it is avoided that in generation module the production such as foreign matter or center cracking fracture occur
It is abnormal.There is its original advantage in terms of the system cost management and control such as the whole machine manufacturing, cost of labor, quality problems.
In the present invention, TPV（TPV）, i.e., thermoplastic dynamic vulcanized elastomer is that dynamic is added in PP
The EPDM of vulcanization（Ethylene propylene diene rubber）, form island structure, the softness and resilience of this existing rubber of material, while can picture
Plastic injection is processed, processing and forming efficiency high.
As a result of being different from traditional fiberglass reinforced plastics, flexible glue material its parameters in the present invention need into
Row test, for example, including proportion, shore hardness, tensile strength, tearing strength, elongation at break etc..In addition, backlight of the invention
Module is preferably down straight aphototropism mode set.
For traditional backlight module center, in 0.3-0.5%, the present invention, molding shrinkage is 1% for its molding shrinkage
~ 1.2%, such as 1.1%.Molding shrinkage therein is to determine qualified TPV samples according to combination property, and is placed on climatic test
In case, certain hour is placed under different temperatures, humidity, then test sample change in size size is calculated.
The shore hardness of flexible glue material of backlight module center be can be applied between Shao A85 ~ Shao D45, shore hardness is too
It is soft difficult when center can be caused to assemble, bad positioning and it is not easy support, unprotect during with glass contact can be caused very much to ease up firmly
Punching is acted on, and easily produces gap light leak.
In the present invention, the tensile strength of the center is in 40 ~ 47MPa, such as 45MPa.The elongation at break of the center is
500 ~ 540%, such as 520%.What tensile strength was characterized be it is certain outer under a stretching force, material resists the ability of tensile failure.
For rigid plastics, tensile strength is higher, modulus is higher, and the rigidity of material is stronger, is less susceptible to deformation.And for flexible plastic
For, pliability is stronger, and tensile strength and modulus are relatively low, and elongation at break is very big, in the case where being acted on by external force, can produce
Moderate finite deformation is without cracking.Therefore, for the flexible glue material in the middle of plastics and rubber performance, present invention determine that optimal drawing
Stretch strength range between 40 ~ 47MPa, elongation at break 500 ~ 540%, to ensure its combination property applied.
Between 0.8-0.93, such as 0.9, for proportion, it is to determine to close in properties to the proportion of the center
The physical characteristics of materials produced after lattice.Further, the tearing strength of the center is in 58 ~ 65KN/m, such as 60 KN/m.
It is determined that after above-mentioned properties, during injection module center, for product, also needing design experiment to determine to be adapted to reality
Every key parameter of applied environment, is such as related to screen body glass（That is display screen glass）The coefficient of friction that whether slides,
Linear expansion coefficient, change in size degree under high and low temperature environment whether can jack-up glass, whether can enter dirt etc..
Silica gel strip, silica gel strip can be used when traditional module center is with screen body glass contact can not only avoid rigid plastics
Frame scratches screen body glass, moreover it is possible to glass is not slid, and sliding can cause glass position to wander off or even de- in assembling process
Fall.And apply flexible glue material to be molded center, it is intended that cancel silica gel strip, the use of foam, directly with screen body glass contact, therefore together
Sample is it needs to be determined that and display screen（Specifically display screen glass）Suitable frictional coefficient, but material species, hardness, die surface
Erosion line difference can influence coefficient of friction size.Through multiple repetition test, can be applied to the flexible glue material material of center and show
The coefficient of friction of display screen glass between 0.65-1.04, such as 0.8, method of testing be by a certain size flexible glue material try
Piece is pasted onto on board, and one block of glass is put above, and constant weight counterweight is added on glass, and counterweight, software note are pulled with certain speed
Record force value, converses coefficient of friction.It is another by actually detected, the linear expansion coefficient under 0-40 degrees Celsius is 20 ~ 30 × 10- 5M/K is preferable.
In addition, after flexible glue material is molded into center, also need to use climatic test cabinet, when placing one section under different temperatures humidity
Between, the change in size size of framework is measured, whether observation frame frame can arch upward, withstand glass because of heat expansion.Recover normal temperature
After deform it is whether reversible, if light leak etc..
Finally, in addition it is also necessary to detect that Sulfur releasing is tested, after assembling whole machine, whether flexible glue material has element sulphur to separate out, and causes LED
The fluorescence coating discoloration of lamp, influences LED and module light efficiency.By test of many times, flexible glue material must carry out sulphur using non-sulphur accelerator
Change, content is reapplied on center in below 200ppm.
The present invention can solve the auxiliary material and station of stickup flexible glue bar and buffer bar in Conventional process, also be avoided that generation
Module center is broken and falls risk and the quality puzzlement that bits produce foreign matter in screen.
In the present invention, the extension edge in Fig. 1（At A）With screen body glass（Display screen glass）Directly contact, cancels former patch soft
The groove of adhesive tape, increases hem width degree and is unlikely to skid, and is more easy to assembling, side depth is increased at such as B and is assembled with metal backing
It is that 12mm is increased to by 6.45mm in the 30% of former width, this example Deng, increasing degree.The another center because of flexible glue material is relative
Former plastic middle-frame is softer, if be designed as whole frame be not easy assembling, so using when design center be long margin frame and Wide frame list
Solely die sinking, is molded by side long and short side is assembled, that is to say, that long margin frame and Wide frame need to respectively open one set of die, is molded soft
Glue center moulding.
After die sinking is completed, that is, carry out the test manufacture of flexible glue material, survey the change in size of type module center, according to assembling
Situation works out assembly technology and packaging, needs to complete various overall tests after being assembled into whole machine.According to every the result, for answering
Be adjusted with the place of not smooth or problematic point, until can volume production, respectively test OK, finally complete final assembly, packaging.
The present invention also provides a kind of display device, and it includes backlight module as described above.
In sum, the present invention not only saves artificial station, improves production efficiency, and avoids traditional glass increasing
Strong plastics are broken and fall the quality risk that bits produce foreign matter in module, have saved mass of system cost and the production in the production cycle
Cost.
It should be appreciated that application of the invention is not limited to above-mentioned citing, and for those of ordinary skills, can
To be improved according to the above description or converted, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Shield scope.
Claims (10)
1. a kind of backlight module of application flexible glue material, it is characterised in that including a center, the center include center body with
And extended laterally in the middle part of center body and the extension edge for being contacted with display screen, the bottom of the center body is used for and the back of the body
Plate is contacted, and the center uses flexible glue material, and the flexible glue material is TPV.
2. the backlight module of application flexible glue material according to claim 1, it is characterised in that the tensile strength of the center
In 40 ~ 47MPa.
3. the backlight module of application flexible glue material according to claim 1, it is characterised in that the extension at break of the center
Rate is 500 ~ 540%.
4. the backlight module of application flexible glue material according to claim 1, it is characterised in that the tearing strength of the center
It is 58 ~ 65KN/m.
5. the backlight module of application flexible glue material according to claim 1, it is characterised in that the shore hardness of the center
Between Shao A85 ~ Shao D45.
6. the backlight module of application flexible glue material according to claim 1, it is characterised in that the proportion of the center is
0.8-0.93。
7. the backlight module of application flexible glue material according to claim 1, it is characterised in that the inprocess shrinkage of the center
Rate is 1% ~ 1.2%.
8. the backlight module of application flexible glue material according to claim 1, it is characterised in that the center and display screen
Coefficient of friction is 0.65-1.04.
9. the backlight module of application flexible glue material according to claim 1, it is characterised in that the backlight module is under straight
Formula backlight module.
10. a kind of display device, it is characterised in that including the backlight module as described in any one of claim 1 ~ 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710112188.2A CN106764713A (en) | 2017-02-28 | 2017-02-28 | The backlight module and display device of a kind of application flexible glue material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710112188.2A CN106764713A (en) | 2017-02-28 | 2017-02-28 | The backlight module and display device of a kind of application flexible glue material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106764713A true CN106764713A (en) | 2017-05-31 |
Family
ID=58959834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710112188.2A Pending CN106764713A (en) | 2017-02-28 | 2017-02-28 | The backlight module and display device of a kind of application flexible glue material |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614352A (en) * | 2009-07-08 | 2009-12-30 | 友达光电股份有限公司 | Backlight module and display module |
| CN201757332U (en) * | 2010-07-14 | 2011-03-09 | 创维液晶器件(深圳)有限公司 | Back panel free type backlight module for LCD TV |
| CN102644887A (en) * | 2012-03-23 | 2012-08-22 | 深圳市华星光电技术有限公司 | Backlight module structure and liquid crystal display device |
| CN203641994U (en) * | 2013-12-06 | 2014-06-11 | 创维液晶器件(深圳)有限公司 | Narrow-frame backlight module and liquid crystal display device |
| CN104390179A (en) * | 2014-11-21 | 2015-03-04 | 深圳市华星光电技术有限公司 | Backlight module |
-
2017
- 2017-02-28 CN CN201710112188.2A patent/CN106764713A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614352A (en) * | 2009-07-08 | 2009-12-30 | 友达光电股份有限公司 | Backlight module and display module |
| CN201757332U (en) * | 2010-07-14 | 2011-03-09 | 创维液晶器件(深圳)有限公司 | Back panel free type backlight module for LCD TV |
| CN102644887A (en) * | 2012-03-23 | 2012-08-22 | 深圳市华星光电技术有限公司 | Backlight module structure and liquid crystal display device |
| CN203641994U (en) * | 2013-12-06 | 2014-06-11 | 创维液晶器件(深圳)有限公司 | Narrow-frame backlight module and liquid crystal display device |
| CN104390179A (en) * | 2014-11-21 | 2015-03-04 | 深圳市华星光电技术有限公司 | Backlight module |
Non-Patent Citations (1)
| Title |
|---|
| 于守武等: "《高分子材料改性-原理及技术》", 31 May 2015, 北京：知识产权出版社 * |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |
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| RJ01 | Rejection of invention patent application after publication |