CN105911773B - Sealant composition, display panel and preparation method, display device - Google Patents
Sealant composition, display panel and preparation method, display device Download PDFInfo
- Publication number
- CN105911773B CN105911773B CN201610483213.3A CN201610483213A CN105911773B CN 105911773 B CN105911773 B CN 105911773B CN 201610483213 A CN201610483213 A CN 201610483213A CN 105911773 B CN105911773 B CN 105911773B
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- Prior art keywords
- sealant
- sealant composition
- display panel
- substrate
- liquid crystal
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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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
-
- 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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13398—Spacer materials; Spacer properties
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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)
- Sealing Material Composition (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention provides a kind of sealant composition, display panel and preparation methods, display device, belong to field of display technology.Wherein, the preparation method of sealant composition, comprising: barrier material and sealant stoste are obtained into mixture according to preset quality percentage mixture；It carries out the mixture to be protected from light deaeration and handles to obtain sealant composition.Technical solution of the present invention can be improved the anti-puncture ability of sealant composition, so as to improve the performance of liquid crystal display panel.
Description
Technical field
The present invention relates to field of display technology, a kind of sealant composition, display panel and preparation method, aobvious are particularly related to
Showing device.
Background technique
With the development of science and technology liquid crystal display panel is increasingly becoming display with the fastest developing speed the advantages that light with its, thin
One of device.And the manufacture craft of liquid crystal display panel will have a direct impact on the property such as brightness, contrast, color of final products
Energy.
Existing liquid crystal display panel generally forms box by array substrate and color membrane substrates, and using sealant as viscous
The two is bonded together to form complete liquid crystal display panel by knot agent.Glass fibre and gold goal grain can generally be added in sealant
Son come each serve as support and be connected upper and lower base plate effect.However, difficult during combined fiberglass and gold goal particle
Exempting from will appear to mix unevenly causes each position support force different, causes peripheral clearance defect, liquid crystal molecule penetrates readily through envelope frame
Glue affects the display effect of liquid crystal display panel to cause to puncture phenomenon.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of sealant composition, display panel and preparation methods, display
Device can be improved the anti-puncture ability of sealant composition, so as to improve the performance of liquid crystal display panel.
In order to solve the above technical problems, the embodiment of the present invention offer technical solution is as follows:
On the one hand, a kind of preparation method of sealant composition is provided, comprising:
Barrier material and sealant stoste are obtained into mixture according to preset quality percentage mixture；
It carries out the mixture to be protected from light deaeration and handles to obtain sealant composition.
Further, the barrier material is high-density polyethylene/polyamide HDPE/PA composite material.
Further, HDPE/PA composite material mass percent shared in the sealant composition is
10%~20%.
Further, in the HDPE/PA composite material, mass percent shared by siloxane chain liquid crystal elastic body is
2%-40%.
Further, the time for being protected from light deaeration processing is 1-5 hours.
Further, described barrier material and sealant stoste are obtained into mixture than mixture according to preset quality to include:
Sealant stoste is put into container, then barrier material is added in sealant stoste according to preset quality ratio；
The container is placed in ultrasonic cavity room, vibrates the container under ultrasonication, while in container
Mixture be stirred.
Further, the time of stirring is 0.4-0.6 hours.
The embodiment of the invention provides a kind of sealant compositions, to be prepared using preparation method as described above,
The sealant composition includes sealant and the barrier material that is entrained in the sealant.
The embodiment of the invention provides a kind of preparation method of display panel, the display panel includes the to box setting
One substrate and the second substrate, which comprises
Sealant composition as described above is coated on the sealant coating zone of first substrate；
By the second substrate and first substrate coated with sealant composition to box；
Ultra-violet curing or heat cure are carried out to sealant composition, obtain the display panel.
Further, the display panel is liquid crystal display panel, described to combine by the second substrate and coated with sealant
The first substrate of object is to box specifically:
The second substrate that drop is had liquid crystal and first substrate coated with sealant composition are to box.
The embodiment of the invention also provides a kind of display panels, including the first substrate that box is arranged and the second substrate, institute
It states first substrate and the second substrate is encapsulated by sealant composition as described above.
Further, the display panel is liquid crystal display panel, the display panel further include:
Liquid crystal cell between the first substrate and the second substrate.
The embodiment of the invention also provides a kind of display devices, including display panel as described above.
The embodiment of the present invention has the advantages that
In above scheme, barrier material is adulterated in sealant stoste, sealant composition is prepared.Barrier material tool
There is good barrier property, liquid crystal molecule can be effectively prevent to penetrate sealant, additionally it is possible to prevent the small molecule in sealant from wearing
It is polluted caused by thoroughly, to improve the anti-puncture ability of sealant composition, and then improves the performance of liquid crystal display panel.
Detailed description of the invention
Fig. 1 is the schematic cross-section of liquid crystal layer and sealant in available liquid crystal display panel；
Fig. 2 is the schematic cross-section of liquid crystal layer and sealant in liquid crystal display panel of the embodiment of the present invention.
Appended drawing reference
1 liquid crystal layer, 2 sealant composition, 3 gold goal particle, 4 glass fibre
5HDPE/PA (high-density polyethylene/polyamide) composite material
Specific embodiment
To keep the embodiment of the present invention technical problems to be solved, technical solution and advantage clearer, below in conjunction with
Drawings and the specific embodiments are described in detail.
Fig. 1 show the schematic cross-section of liquid crystal layer and sealant in available liquid crystal display panel, in production liquid crystal display
When panel, by drop have liquid crystal array substrate and color membrane substrates vacuum coated with sealant to box after, traditional sealant exists
Inevitably will appear mixing in mixed process unevenly causes each position support force different, causes peripheral clearance defect, liquid crystal molecule
Sealant is penetrated readily through to cause to puncture phenomenon；In addition, if sealant completion of cure liquid crystal molecule not in time in solidification
Also it can enter sealant so as to cause phenomenon is punctured.
In order to solve the display effect that liquid crystal molecule in the prior art penetrates readily through sealant, influences liquid crystal display panel
Problem, the embodiment of the present invention provide a kind of sealant composition, display panel and preparation method, display device, can be improved envelope
The anti-puncture ability of frame glue composition, so as to improve the performance of liquid crystal display panel.
Embodiment one
The present embodiment provides a kind of preparation methods of sealant composition, comprising:
Barrier material and sealant stoste are obtained into mixture according to preset quality percentage mixture；
It carries out the mixture to be protected from light deaeration and handles to obtain sealant composition.
In the present embodiment, barrier material is adulterated in sealant stoste, sealant composition is prepared.Barrier material tool
There is good barrier property, liquid crystal molecule can be effectively prevent to penetrate sealant, additionally it is possible to prevent the small molecule in sealant from wearing
It is polluted caused by thoroughly, to improve the anti-puncture ability of sealant composition, and then improves the performance of liquid crystal display panel.
Preferably, barrier material is high-density polyethylene/polyamide (HDPE/PA) composite material.Wherein, HDPE is non-pole
Property polymer, there is good barrier property to water isopolarity solvent, but non-polar organic solvent, gas have higher transmission to it
Property；And PA is polar polymer, its good barrier property to nonpolar solvent, gas, it is poor to the barrier property of polar solvent.HDPE/
PA composite material combines the two advantage, is the high-barrier composite material of function admirable, and HDPE/PA composite material has larger
Viscosity, HDPE/PA composite material is added in sealant stoste, the viscosity of sealant composition, Neng Gouqi can be improved
To the effect of anchoring small molecule, the small molecule effectivelying prevent in liquid crystal molecule or sealant is penetrated, and then avoids liquid crystal point
Son punctures to be polluted caused by phenomenon.
In addition, the intensity of HDPE/PA composite material is larger, HDPE/PA composite material is added in sealant stoste, also
The support performance of sealant composition can be improved.
Further, it since the PA in HDPE/PA composite material has polarity, can be mixed with polar electric conduction seal frame glue
Uniformly, thus obtain uniformity improvement electric conduction seal frame glue, can while the generation of puncture phenomenon for preventing liquid crystal molecule,
Reduce the periphery defect of display panel.
Preferably, HDPE/PA composite material mass percent shared in sealant composition is 10%~20%, such as
Fruit HDPE/PA composite material mass percent shared in sealant composition is excessive (for example being greater than 20%), it will influences
The bonding force of sealant composition, so that the encapsulation performance of liquid crystal display panel declines；If HDPE/PA composite material is in envelope frame
Shared mass percent is too small (such as less than 10%) in glue composition, it is impossible to guarantee the anti-puncture energy of sealant composition
Power.
In HDPE/PA composite material, HDPE is non-polar polymer, and PA is polar polymer, nonpolar HDPE and polarity
The compatibility of PA is poor, in order to improve the compatibility of nonpolarity HDPE and polarity PA in HDPE/PA composite material, can use
Gamma-radiation irradiates HDPE, so that HDPE is generated siloxane chain, so that HDPE is chained hydroxyl, carboxyl isopolarity group, to improve
The compatibility of itself and PA.Preferably, in HDPE/PA composite material, mass percent shared by siloxane chain liquid crystal elastic body
For 2%-40%.
Preferably, the time for being protected from light deaeration processing is 1-5 hours, the bonding for the sealant composition that can have both guaranteed
Power, and can guarantee that sealant composition has preferable anti-puncture ability.
Evenly dispersed in sealant composition of barrier material is a key point, in order to improve sealant composition
Barrier material is added in sealant stoste by uniformity, the present embodiment, is obtained by the way of stirring in ultrasound later
The mixture of barrier material and sealant stoste.Specifically, sealant stoste can be put into container, then barrier material is pressed
It is added in sealant stoste according to preset quality ratio, container is placed in ultrasonic cavity room, container is made to shake under ultrasonication
It is dynamic, while the mixture in container is stirred.
Preferably, the time of stirring is 0.4-0.6 hours.Specifically, it can also be appropriately extended or subtract according to actual needs
The time stirred less.
In one specific embodiment, the preparation method of the sealant composition of the present embodiment the following steps are included:
Step a: by sealant stoste, HDPE/PA composite material according to preset quality than mixture, the stirring of the side Bian Chaosheng makes it
It being uniformly dispersed, in mixture, the mass percent of sealant stoste is 60-99%, in HDPE/PA composite material, siloxanes side
Mass percent shared by chain liquid crystal elastic body is 2%-40%；
Step b: the mixture of sealant stoste and HDPE/PA composite material is put into deaerator and is protected from light at deaeration
Reason, inclined heated plate are 1-5 hours.
The present embodiment adulterates HDPE/PA composite material in sealant stoste, and sealant composition is prepared.HDPE/
PA composite material has good barrier property, liquid crystal molecule can be effectively prevent to penetrate sealant, additionally it is possible to prevent sealant
In small molecule penetrate caused by pollution, to improve the anti-puncture ability of sealant composition, and then improve LCD display
The performance of plate.
Embodiment two
A kind of sealant composition is present embodiments provided, to be prepared using preparation method as described above, the envelope
Frame glue composition includes sealant and the barrier material that is entrained in sealant.
Doped with barrier material in the sealant composition of the present embodiment, barrier material has good barrier property, energy
Enough liquid crystal molecule is effectively prevent to penetrate sealant, additionally it is possible to pollution caused by preventing the small molecule in sealant from penetrating, to mention
The anti-puncture ability of high sealant composition, and then improve the performance of liquid crystal display panel.
Preferably, barrier material is HDPE/PA composite material.Wherein, HDPE is non-polar polymer, molten to water isopolarity
Agent has good barrier property, but non-polar organic solvent, gas have higher permeability to it；And PA is polar polymer,
Its good barrier property to nonpolar solvent, gas, it is poor to the barrier property of polar solvent.HDPE/PA composite material combines the two
Advantage is the high-barrier composite material of function admirable, and HDPE/PA composite material has biggish viscosity, and HDPE/PA is compound
Material is added in sealant stoste, and the viscosity of sealant composition can be improved, and can play the role of being anchored small molecule, have
Effect prevents penetrating for the small molecule in liquid crystal molecule or sealant, and then liquid crystal molecule is avoided to puncture pollution caused by phenomenon.
In addition, the intensity of HDPE/PA composite material is larger, HDPE/PA composite material is added in sealant stoste, also
The support performance of sealant composition can be improved.
Further, it since the PA in HDPE/PA composite material has polarity, can be mixed with polar electric conduction seal frame glue
Uniformly, thus obtain uniformity improvement electric conduction seal frame glue, can while the generation of puncture phenomenon for preventing liquid crystal molecule,
Reduce the periphery defect of display panel.
Preferably, HDPE/PA composite material mass percent shared in sealant composition is 10%~20%, such as
Fruit HDPE/PA composite material mass percent shared in sealant composition is excessive (for example being greater than 20%), it will influences
The bonding force of sealant composition, so that the encapsulation performance of liquid crystal display panel declines；If HDPE/PA composite material is in envelope frame
Shared mass percent is too small (such as less than 10%) in glue composition, it is impossible to guarantee the anti-puncture energy of sealant composition
Power.
Embodiment three
Present embodiments provide a kind of preparation method of display panel, display panel include to the first substrate of box setting and
The second substrate, the preparation method include:
Step c: sealant composition as described above is coated on the sealant coating zone of first substrate；
Specifically, which can be liquid crystal display panel, the display panel further include: be located at first substrate and the
Liquid crystal cell between two substrates.
Normally, first substrate is color membrane substrates, when sealant composition to be coated on color membrane substrates, using being protected from light
Operation, avoiding sealant mixture from being irradiated by light can be cured, when coating sealant composition, sealant composition is equal
On the even sealant coating zone for being coated to color membrane substrates.
Step d: by the second substrate and first substrate coated with sealant composition to box；
Normally, the second substrate is array substrate, and drop has liquid crystal in array substrate, will drop have the array substrate of liquid crystal with
Color membrane substrates coated with sealant composition are in vacuum environment to box.
Step e: ultra-violet curing or heat cure are carried out to sealant composition, obtain display panel.
Doped with barrier material in the sealant composition of the present embodiment, barrier material has good barrier property, energy
Enough liquid crystal molecule is effectively prevent to penetrate sealant, additionally it is possible to pollution caused by preventing the small molecule in sealant from penetrating, to mention
The anti-puncture ability of high sealant composition, and then improve the performance of liquid crystal display panel.
Example IV
A kind of display panel is present embodiments provided, including the first substrate that box is arranged and the second substrate, first substrate
It is encapsulated with the second substrate by sealant composition as described above.
In one specific embodiment, display panel is liquid crystal display panel, as shown in Fig. 2, liquid crystal display panel includes pair
The first substrate and the second substrate of box setting, there is liquid crystal layer 1, first substrate and the second base between first substrate and the second substrate
Plate is packaged together by sealant composition 2, glass fibre 4 and gold goal particle 3 is added in sealant composition 2 to distinguish
Play the role of support and conducting upper and lower base plate.
Further, also doped with HDPE/PA composite material 5 in sealant composition 2, HDPE/PA composite material 5 is
The high-barrier composite material of function admirable has good barrier property, and it is compound that HDPE/PA is adulterated in sealant composition
Material 5 can effectively prevent liquid crystal molecule to penetrate sealant, additionally it is possible to dirt caused by preventing the small molecule in sealant from penetrating
Dye to improve the anti-puncture ability of sealant composition, and then improves the performance of liquid crystal display panel.
Embodiment five
Present embodiments provide a kind of display device, including display panel as described above.Display device can be with are as follows: liquid crystal
Any products or components having a display function such as TV, liquid crystal display, Digital Frame, mobile phone, tablet computer, wherein aobvious
Showing device further includes flexible circuit board, printed circuit board and backboard.
It is the preferred embodiment of the present invention above, it is noted that for those skilled in the art,
Without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications should also regard
For protection scope of the present invention.
Claims (11)
1. a kind of preparation method of sealant composition characterized by comprising
Barrier material and sealant stoste are obtained into mixture according to preset quality percentage mixture；
The mixture be protected from light deaeration and handles to obtain sealant composition, the barrier material be high density polyethylene (HDPE)/
Polyamide HDPE/PA composite material；
In the HDPE/PA composite material, mass percent shared by siloxane chain liquid crystal elastic body is 2%-40%.
2. the preparation method of sealant composition according to claim 1, which is characterized in that the HDPE/PA composite wood
Expect that shared mass percent in the sealant composition is 10%~20%.
3. the preparation method of sealant composition according to claim 1, which is characterized in that be protected from light the time of deaeration processing
It is 1-5 hours.
4. the preparation method of sealant composition according to claim 1, which is characterized in that described by barrier material and envelope
Frame glue stoste obtains mixture than mixture according to preset quality
Sealant stoste is put into container, then barrier material is added in sealant stoste according to preset quality ratio；
The container is placed in ultrasonic cavity room, vibrates the container under ultrasonication, while to mixed in container
Object is closed to be stirred.
5. the preparation method of sealant composition according to claim 4, which is characterized in that the time of stirring is 0.4-
0.6 hour.
6. a kind of sealant composition, which is characterized in that use preparation method system according to any one of claims 1 to 5
Standby to obtain, the sealant composition includes sealant and the barrier material that is entrained in the sealant.
7. a kind of preparation method of display panel, the display panel includes the first substrate and the second substrate to box setting,
It is characterized in that, which comprises
Sealant composition as claimed in claim 6 is coated on the sealant coating zone of first substrate；
By the second substrate and first substrate coated with sealant composition to box；
Ultra-violet curing or heat cure are carried out to sealant composition, obtain the display panel.
8. the preparation method of display panel according to claim 7, which is characterized in that the display panel is liquid crystal display
Panel, it is described by the second substrate and first substrate coated with sealant composition to box specifically:
The second substrate that drop is had liquid crystal and first substrate coated with sealant composition are to box.
9. a kind of display panel, including the first substrate that box is arranged and the second substrate, which is characterized in that the first substrate and
The second substrate is encapsulated by sealant composition as claimed in claim 6.
10. display panel according to claim 9, which is characterized in that the display panel is liquid crystal display panel, described
Display panel further include:
Liquid crystal cell between the first substrate and the second substrate.
11. a kind of display device, which is characterized in that including the display panel as described in claim 9 or 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610483213.3A CN105911773B (en) | 2016-06-27 | 2016-06-27 | Sealant composition, display panel and preparation method, display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610483213.3A CN105911773B (en) | 2016-06-27 | 2016-06-27 | Sealant composition, display panel and preparation method, display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105911773A CN105911773A (en) | 2016-08-31 |
| CN105911773B true CN105911773B (en) | 2019-05-07 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610483213.3A Expired - Fee Related CN105911773B (en) | 2016-06-27 | 2016-06-27 | Sealant composition, display panel and preparation method, display device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107632463B (en) * | 2017-09-15 | 2020-06-05 | 京东方科技集团股份有限公司 | Frame sealing adhesive and display device |
| CN110806662B (en) * | 2019-10-28 | 2023-03-17 | 武汉华星光电技术有限公司 | Display panel and manufacturing method thereof |
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| JP2005221944A (en) * | 2004-02-09 | 2005-08-18 | Seiko Epson Corp | Method for manufacturing liquid crystal display device |
| CN101415550A (en) * | 2006-04-10 | 2009-04-22 | 法国圣戈班玻璃厂 | Laminated glazing and sealing and peripheral reinforcing means for same |
| CN103146310A (en) * | 2013-01-28 | 2013-06-12 | 北京京东方光电科技有限公司 | Frame sealing glue and preparation method thereof |
| CN103205216A (en) * | 2013-03-25 | 2013-07-17 | 北京京东方光电科技有限公司 | Frame sealant and preparation method thereof |
| CN103907054A (en) * | 2011-11-04 | 2014-07-02 | 积水化学工业株式会社 | Sealing agent for liquid crystal display element, vertically conducting material, and liquid crystal display element |
| CN105209969A (en) * | 2013-03-21 | 2015-12-30 | 日本化药株式会社 | Liquid crystal sealing agent and liquid crystal display cell using same |
-
2016
- 2016-06-27 CN CN201610483213.3A patent/CN105911773B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005221944A (en) * | 2004-02-09 | 2005-08-18 | Seiko Epson Corp | Method for manufacturing liquid crystal display device |
| CN101415550A (en) * | 2006-04-10 | 2009-04-22 | 法国圣戈班玻璃厂 | Laminated glazing and sealing and peripheral reinforcing means for same |
| CN103907054A (en) * | 2011-11-04 | 2014-07-02 | 积水化学工业株式会社 | Sealing agent for liquid crystal display element, vertically conducting material, and liquid crystal display element |
| CN103146310A (en) * | 2013-01-28 | 2013-06-12 | 北京京东方光电科技有限公司 | Frame sealing glue and preparation method thereof |
| CN105209969A (en) * | 2013-03-21 | 2015-12-30 | 日本化药株式会社 | Liquid crystal sealing agent and liquid crystal display cell using same |
| CN103205216A (en) * | 2013-03-25 | 2013-07-17 | 北京京东方光电科技有限公司 | Frame sealant and preparation method thereof |
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| CN105911773A (en) | 2016-08-31 |
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