CN102650769B - Frame sealing glue and method for encasing alignment of color film substrate and array substrate based on frame sealing glue - Google Patents
Frame sealing glue and method for encasing alignment of color film substrate and array substrate based on frame sealing glue Download PDFInfo
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- CN102650769B CN102650769B CN201110299291.5A CN201110299291A CN102650769B CN 102650769 B CN102650769 B CN 102650769B CN 201110299291 A CN201110299291 A CN 201110299291A CN 102650769 B CN102650769 B CN 102650769B
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- sealed plastic
- plastic box
- sealing glue
- frame sealing
- epoxy acrylate
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Abstract
The invention discloses frame sealing glue and a method for encasing alignment of a color film substrate and an array substrate based on the frame sealing glue, belonging to the field of organic polymer composition. The invention aims at solving the problem in the prior art that the curing time of the frame sealing glue is so long to the extent that the micro-molecular substances of the frame sealing glue and external air penetrate into the frame sealing glue, which causes pollution to the liquid crystal between the color film substrate and the array substrate. The frame sealing glue contains epoxy acrylate, photoinitiator, filler and thinner. The method for encasing alignment of the color film substrate and the array substrate based on the frame sealing glue includes the following steps: respectively instilling liquid crystal and coating the frame sealing glue on the array substrate and the color film substrate; conducting vacuum encasing alignment operations to the array substrate and the color film substrate; and irradiating the color film substrate and the array substrate through ultraviolet light to enable the epoxy acrylate in the frame sealing glue to form three-dimensional network polymer, and finally curing.
Description
Technical field
The present invention relates to a kind of sealed plastic box and based on the array base palte of described sealed plastic box and color membrane substrates to the method for box, particularly relate to a kind of set time of short sealed plastic box and based on the array base palte of described sealed plastic box and color membrane substrates.
Background technology
In the manufacturing process of TFT-LCD (Thin Film Transistor-Liquid Crystal Display Thin Film Transistor (TFT) LCDs), the vacuum of tft array substrate and color membrane substrates is very important to box technique, makes tft array substrate become liquid crystal panel by sealed plastic box to box-like with color membrane substrates.Described sealed plastic box, between tft array substrate and the connection of color membrane substrates, plays the effect of sealing, and the liquid crystal between protection tft array substrate and color membrane substrates is not by the impact of outside air.
Existing sealed plastic box principal ingredient is epoxy resin and acrylic acid potpourri, is cured under light trigger existent condition.In the solidification process of sealed plastic box, first carry out ultraviolet curing about 10 seconds, make the acrylic acid in sealed plastic box form the superpolymer of two-dimensional structure; Again by within about 1 hour, being heating and curing, to realize the solidification completely of sealed plastic box, form three-dimensional netted superpolymer cured film.
In existing sealed plastic box, based on epoxy resin, be cured after acrylic acid and the mixing of necessary adjuvant; The Small molecular of easily diffusion is there is in this sealed plastic box, in UV curing process, only there is acroleic acid polymerization, produce the superpolymer of two-dimensional structure, between every layer of two-dimensional structure, gap is larger, the small-molecule substance in sealed plastic box and extraneous oxygen diffusion cannot be hindered to enter in liquid crystal, liquid crystal is polluted; In the process be heating and curing to sealed plastic box, because the time of being heating and curing is longer, not completely crued sealed plastic box and liquid crystal longer for duration of contact, easily cause the Small molecular in sealed plastic box and outside air to pollute liquid crystal.
Summary of the invention
The invention provides a kind of set time short sealed plastic box and based on the array base palte of this sealed plastic box and color membrane substrates to the method for box.
For achieving the above object, the present invention is based on following technical scheme:
A kind of sealed plastic box, comprises epoxy acrylate, light trigger, filling agent and thinning agent.
Carry out color membrane substrates and array base palte to a method for box based on described sealed plastic box, comprising:
Array base palte and color membrane substrates carry out the instillation of liquid crystal and the coating of sealed plastic box respectively;
Array substrate and color membrane substrates carry out vacuum to box;
By Ultraviolet radiation, make the epoxy acrylate in sealed plastic box form three-dimensional network polymer, complete solidification.
A kind of sealed plastic box provided by the invention and carry out color membrane substrates and array base palte to the method for box based on described sealed plastic box, by based on epoxy acrylate as polymkeric substance, only just can by sealed plastic box solidified forming by ultraviolet curing, shorten the time of sealed plastic box solidification, alleviate the pollution level of small-molecule substance to liquid crystal, improve the yields of LCDs.
Accompanying drawing explanation
To be that the embodiment of the present invention is a kind of carry out color membrane substrates and array base palte to the process flow diagram of the method for box based on described sealed plastic box to Fig. 1.
Embodiment
Be described in detail to a kind of sealed plastic box of the embodiment of the present invention with based on the array base palte of this sealed plastic box and the method for color membrane substrates to box below in conjunction with accompanying drawing.
Should be clear and definite, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
A kind of sealed plastic box, comprises epoxy acrylate, light trigger, filling agent and thinning agent.
Described epoxy acrylate is material shown in structural formula 1.
Structural formula 1:
A kind of sealed plastic box that the embodiment of the present invention provides and carry out color membrane substrates and array base palte to the method for box based on described sealed plastic box, by based on epoxy acrylate as polymkeric substance, only just can by sealed plastic box solidified forming by ultraviolet curing, shorten the time of sealed plastic box solidification, alleviate the pollution level of small-molecule substance to liquid crystal.
, by epoxy resin and acrylate at a certain temperature, and under catalyzer and polymerization inhibitor existent condition, there is the esterification of epoxy ring-opening and generate in described epoxy acrylate.
Described catalyzer can be tetrabutyl ammonium bromide, tetrabutyl ammonium bromide, N, N-dimethyl benzylamine or triethylamine.
Described polymerization inhibitor can be MEHQ or p-dihydroxy-benzene.
Described epoxy acrylate introduces the double bond of acrylate at epoxy resin two ends;
Comprise two hydroxyls in this epoxy acrylate, easily form hydrogen bond, for described epoxy acrylate provides higher adhesive property;
At these epoxy acrylate two ends, also include methyl, this methyl can shield ester bond because of space steric effect, makes epoxy acrylate have good chemical resistance and water tolerance.
Simple function group and multi-functional acrylate is comprised in described thinning agent; The acrylate of simple function group, the IBOA (isobornyl acrylate) as shown in structural formula 2;
Structural formula 2:
The acrylate of difunctional, the HDDA (1,6-hexanediyl ester) as shown in structural formula 3 and structural formula 4, TPGDA (tripropylene glycol diacrylate);
Structural formula 3:
Structural formula 4:
And multi-functional acrylate, the TMPTA (trimethylolpropane triacrylate) as shown in structural formula 5.
Structural formula 5:
Allly can produce free radical and further the material of initiated polymerization is referred to as light trigger through illumination.This light trigger, such as UV glue, ultraviolet coating or ultraviolet ink, described light trigger generation chemical change after acceptance or absorption outside energy, is decomposed into free radical or kation, thus the polyreaction causing other materials generates macromolecule.
This filling agent can be aluminium powder or silica flour, for improving the cohesiveness of the rear sealed plastic box of solidification, makes the structure of sealed plastic box more stable.
The mass percent of described epoxy acrylate is 50%-60%;
The mass percent of described thinning agent is 20%-30%;
The mass percent of described light trigger is 2%-5%; When in described sealed plastic box, the mass percent shared by light trigger is less than 2%, when ultraviolet illumination, it is less that light trigger decomposes the free radical produced, thus reduce the speed of epoxy acrylic polyisocyanate polyaddition, make small-molecule substance diffuse in liquid crystal, cause the pollution of liquid crystal; When the mass percent shared by described light trigger is greater than 5%, the free radical that light trigger produces is more, but does not significantly affect for the polymerization speed of epoxy acrylate, thus causes waste.
The mass percent of described filling agent is 10%-15%.
For increasing curing rate and the curing degree of described sealed plastic box, to reduce the pollution of small-molecule substance to liquid crystal further, described sealed plastic box, preferred ratio is:
The mass percent of described thinning agent is 30%;
The mass percent of described light trigger is 4%;
The mass percent of described epoxy acrylate is 55%;
The mass percent of described filling agent is 11%.
As shown in table 1
Table 1
The relation of photoinitiator levels and sealed plastic box curing rate and curing degree
Known, when the mass percent of described light trigger is 4%, can realize the higher curing degree of epoxy acrylate in the short period of time, thus reduce the time of the sealed plastic box before liquid crystal and solidification further, the small-molecule substance before avoiding solidification in sealed plastic box pollutes liquid crystal.
When the mass percent of described thinning agent is 30%, as shown in table 2
Table 2
The mass percent sealed plastic box close-burning relation rear with solidification of thinning agent
Known, when being cured sealed plastic box, when the mass percent of thinning agent is 30%, but the sealed plastic box toughness of sealed plastic box after solidification is maximum, thus the antiwear property of the sealed plastic box strengthened further.
Corresponding with described a kind of sealed plastic box, present invention also offers and a kind ofly carry out color membrane substrates and array base palte to the method for box based on described sealed plastic box, as shown in Figure 1.
Step 100, on array base palte and color membrane substrates, carry out the instillation of liquid crystal and the coating of sealed plastic box respectively
According to different to box time institute mode, can on substrate dispenser method, and apply sealed plastic box on relative substrate; With dispenser method on array base palte, and on color membrane substrates, apply sealed plastic box be that example is described.
Except dispenser method on array base palte, can also on array base palte insufflation shock insulator matter, this chock insulator matter mixes with liquid crystal, is sprayed on array base palte equably.
After completing the instillation of liquid crystal and the coating of sealed plastic box, described array base palte and color membrane substrates are positioned over vacuum in cartridge device.
Step 101, array substrate and color membrane substrates carry out vacuum to box
Under the environment of vacuum, make array base palte and color membrane substrates to box; After box, liquid crystal diffusion is distributed in the space that sealed plastic box surrounds equably; In the process of liquid crystal diffusion, the chock insulator matter mixed with liquid crystal can be made to be distributed in equably in liquid crystal.
Step 102, by Ultraviolet radiation, make epoxy acrylate in sealed plastic box form three-dimensional network polymer, complete solidification
Complete after box, by Ultraviolet radiation about 1 minute, sealed plastic box is cured; Light trigger decomposes generation free radical under ultraviolet irradiation; The double bond at epoxy acrylate two ends is opened under the exciting of free radical, and other double bonds opened in sealed plastic box are combined, and forms superpolymer.
Now, except the polymerization between the epoxy acrylate in sealed plastic box, also can with all kinds of acrylic ester polymerizations in thinning agent; Because the bond angle of the double bond of the acrylate in described thinning agent is different from position, thus make the epoxy acrylate be polymerized with it towards all directions, thus directly form three-dimensional network polymer; This three-dimensional network polymer can fix the small-molecule substance in sealed plastic box, and prevents the small-molecule substance in extraneous air from diffusing in liquid crystal, thus avoids liquid crystal contaminated.
Further, under the effect of filling agent, improve the toughness of sealed plastic box after the solidification of epoxy acrylate, improve the antiwear property of sealed plastic box after solidification.
Comparative example
In existing sealed plastic box, by being cured the potpourri of epoxy resin and acrylate.
When being cured this existing sealed plastic box, first by ultraviolet curing about 70 seconds, make the acrylic ester polymerization in sealed plastic box, form the superpolymer of two-dimensional structure, the superpolymer of this two-dimensional structure cannot shield small-molecule substance; After ultraviolet curing completes, by heating, epoxy resin is polymerized with the superpolymer of acrylate, forms three-dimensional netted superpolymer, the process lasts be heating and curing 1 hour; In the process be heating and curing, the superpolymer because of established two-dimensional structure cannot shield the small-molecule substance in sealed plastic box, therefore in the process, small-molecule substance easily diffuses into liquid crystal, thus pollutes liquid crystal, and the yields of LCDs is declined.
Embodiment 2
A kind of sealed plastic box described in embodiment 1 after being cured, long-time use LCDs time, can because the thermal stability of epoxy resin and mechanical stability poor and cause the sealing of sealed plastic box to decline.Therefore further, described epoxy acrylate is bisphenol-a epoxy acrylate, and the structure of this bisphenol-a epoxy acrylate is as shown in structural formula 6.
Structural formula 6:
Substituting group in this bisphenol-a epoxy acrylate comprises phenyl ring, is that epoxy acrylate has stronger thermal stability and mechanical stability, thus improves thermal stability and the mechanical stability of sealed plastic box, enhance the antiwear property of sealed plastic box.
A kind of sealed plastic box that the embodiment of the present invention provides and carry out color membrane substrates and array base palte to the method for box based on described sealed plastic box, by based on epoxy acrylate as polymkeric substance, only just can by sealed plastic box solidified forming by ultraviolet curing, shorten the time of sealed plastic box solidification, alleviate the pollution level of small-molecule substance to liquid crystal, improve the yields of LCDs.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection domain of claim.
Claims (4)
1. a sealed plastic box, is characterized in that, comprises epoxy acrylate, light trigger, filling agent and thinning agent;
The mass percent of described epoxy acrylate is 50%-60%;
The mass percent of described thinning agent is 20%-30%;
The mass percent of described light trigger is 4%-6%;
The mass percent of described filling agent is 10%-15%.
2. sealed plastic box according to claim 1, is characterized in that, described epoxy acrylate is bisphenol-a epoxy acrylate.
3. sealed plastic box according to claim 1, is characterized in that, described filling agent is magnesium powder or silica flour.
4. carry out color membrane substrates and array base palte to a method for box based on sealed plastic box described in claim 1-3, it is characterized in that, comprising:
Array base palte and color membrane substrates carry out the instillation of liquid crystal and the coating of sealed plastic box respectively;
Array substrate and color membrane substrates carry out vacuum to box;
By Ultraviolet radiation, make the epoxy acrylate in sealed plastic box form three-dimensional network polymer, complete solidification;
Described sealed plastic box, comprises epoxy acrylate, light trigger, filling agent and thinning agent;
The mass percent of described epoxy acrylate is 50%-60%;
The mass percent of described thinning agent is 20%-30%;
The mass percent of described light trigger is 4%-6%;
The mass percent of described filling agent is 10%-15%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110299291.5A CN102650769B (en) | 2011-09-28 | 2011-09-28 | Frame sealing glue and method for encasing alignment of color film substrate and array substrate based on frame sealing glue |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110299291.5A CN102650769B (en) | 2011-09-28 | 2011-09-28 | Frame sealing glue and method for encasing alignment of color film substrate and array substrate based on frame sealing glue |
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| CN102650769A CN102650769A (en) | 2012-08-29 |
| CN102650769B true CN102650769B (en) | 2015-04-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103865470B (en) * | 2014-02-12 | 2016-04-06 | 惠晶显示科技（苏州）有限公司 | A kind of photocuring edge sealing adhesive |
| CN106066731A (en) * | 2016-05-27 | 2016-11-02 | 京东方科技集团股份有限公司 | A kind of touch-control display panel and preparation method thereof, touch control display apparatus |
| CN107024803A (en) * | 2017-04-11 | 2017-08-08 | 惠科股份有限公司 | Display panel and display device |
| CN109752888A (en) * | 2019-03-26 | 2019-05-14 | 京东方科技集团股份有限公司 | A kind of display panel and preparation method thereof, display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049370A (en) * | 1989-08-10 | 1991-02-20 | 深圳天马微电子公司 | The preparation method of ultraviolet light solid adhesives with liquid crystal sealling |
| WO2004027502A1 (en) * | 2002-09-19 | 2004-04-01 | Mitsui Chemicals, Inc. | Sealing composition for liquid crystal displays and process for production of liquid crystal display panels |
| CN102023406A (en) * | 2009-09-14 | 2011-04-20 | 北京京东方光电科技有限公司 | Liquid crystal display panel and method for producing same |
| CN102061065A (en) * | 2009-11-12 | 2011-05-18 | 咸阳秦河复合材料有限责任公司 | Photosensitive cured super resin composition for sealing liquid crystal display (LCD) and preparation method thereof |
-
2011
- 2011-09-28 CN CN201110299291.5A patent/CN102650769B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049370A (en) * | 1989-08-10 | 1991-02-20 | 深圳天马微电子公司 | The preparation method of ultraviolet light solid adhesives with liquid crystal sealling |
| WO2004027502A1 (en) * | 2002-09-19 | 2004-04-01 | Mitsui Chemicals, Inc. | Sealing composition for liquid crystal displays and process for production of liquid crystal display panels |
| CN102023406A (en) * | 2009-09-14 | 2011-04-20 | 北京京东方光电科技有限公司 | Liquid crystal display panel and method for producing same |
| CN102061065A (en) * | 2009-11-12 | 2011-05-18 | 咸阳秦河复合材料有限责任公司 | Photosensitive cured super resin composition for sealing liquid crystal display (LCD) and preparation method thereof |
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