CN100399138C - Liquid crystal panel and its manufacturing method - Google Patents
Liquid crystal panel and its manufacturing method Download PDFInfo
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- CN100399138C CN100399138C CNB200610090852XA CN200610090852A CN100399138C CN 100399138 C CN100399138 C CN 100399138C CN B200610090852X A CNB200610090852X A CN B200610090852XA CN 200610090852 A CN200610090852 A CN 200610090852A CN 100399138 C CN100399138 C CN 100399138C
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Abstract
The present invention relates to a liquid crystal panel manufacturing method which comprises the following steps: lower base plates are provided; seal material is coated on the lower base plates to enclose out a cavity, and comprises light initiator and resin material; the absorption peak of the light initiator comprises a visible wavelength range; a plurality of liquid crystal molecules and a plurality of photosensitive monomers are filled in the cavity; upper base plates are provided; the upper base plates and the lower base plates are assembled in pairs to form a liquid crystal panel; visible light is used for irradiating the liquid crystal panel and is absorbed by the light initiator to prompt the resin material and the light initiator to mutually connect and solidify; voltage is arranged between the upper base plates and the lower base plates, and ultraviolet light is used for irradiating the liquid crystal panel. Thus, the photosensitive monomers are polymerized into a plurality of coordination polymers on at least one of both upper and lower panels.
Description
Technical field
The present invention relates to a kind of display device and method thereof, and be particularly related to a kind of encapsulant (frame glue material), liquid crystal panel and manufacture method thereof.
Background technology
The mode of tradition perfusion liquid crystal in liquid crystal panel adopts the formula injection method that drips (One Drop Filling, ODF), the formula of dripping liquid crystal injection method is earlier to cross a cavity with uncured encapsulant (frame glue material) on glass, again liquid crystal is directly dropped on glass, the assembled in pairs of lower-glass on carrying out then.After the assembled in pairs, use ultraviolet light irradiation encapsulant with its curing.This process can significantly be saved the time and the liquid crystal material of irritating liquid crystal, especially has absolute advantage at the oversize panel.
At present also develop the technology that a kind of orientation: the polymerization macromolecule auxiliary ligand is to (Polymer-Stabilizing Alignment, PSA) technology, it is sneaked into the photosensitivity monomer in the liquid crystal layer, treat its arrange after irradiating ultraviolet light, allow the photosensitivity monomer polymerization become the orientation polymkeric substance, the guiding Liquid Crystal Molecules Alignment.
If in conjunction with the auxiliary alignment technique (PSA) of polymerization macromolecule and the formula injection method (ODF) that drips, when the liquid crystal panel of finishing with UV-irradiation assembling when (comprising photosensitivity monomer and still uncured sealant), photosensitivity monomer and encapsulant will be subjected to exciting of ultraviolet light simultaneously and produce reaction.
Summary of the invention
Given this, the purpose of this invention is to provide a kind of encapsulant, liquid crystal panel and manufacture method thereof, the absorption peak of its encapsulant is different with the absorption peak of photosensitivity monomer, therefore the light of different wave length is provided thus, just can solidify encapsulant and polymerization photosensitivity monomer respectively, the defect problem of avoiding photosensitivity monomer antedating response to cause.
According to purpose of the present invention, a kind of encapsulant is proposed, be used for liquid crystal panel, the sealing material comprises light trigger and resin material.The absorption peak of light trigger comprises visible wavelength range.When light trigger absorbs visible light, impel resin material and light trigger to interconnect and solidify.
According to purpose of the present invention, a kind of liquid crystal panel is also proposed, comprise upper substrate, infrabasal plate, liquid crystal layer and encapsulant.Liquid crystal layer is between upper substrate and infrabasal plate, and liquid crystal layer comprises the orientation polymkeric substance that is attached in upper substrate and the infrabasal plate at least one.Encapsulant is arranged between upper substrate and the infrabasal plate, and in order to liquid crystal layer is sealed between upper substrate and the infrabasal plate, wherein encapsulant comprises light trigger, and the absorption peak of light trigger comprises visible wavelength range.
According to purpose of the present invention, a kind of manufacture method of liquid crystal panel is proposed again, comprising: infrabasal plate is provided; With around cavity, wherein encapsulant comprises light trigger and resin material to the coating encapsulant in infrabasal plate, and the absorption peak of light trigger comprises visible wavelength range; Fill a plurality of liquid crystal molecules and a plurality of photosensitivity monomer in cavity; Upper substrate is provided, and assembled in pairs upper substrate and infrabasal plate, to form liquid crystal panel; With the radiation of visible light liquid crystal panel, light trigger absorbs visible light, impels resin material and light trigger to interconnect and solidifies; And provide voltage between upper substrate and infrabasal plate, and, make the photosensitivity monomer on infrabasal plate and/or upper substrate, aggregate into a plurality of orientation polymkeric substance with the UV-irradiation liquid crystal panel.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below:
Description of drawings
Fig. 1 is the absorption spectrum that illustrates according to the light trigger of the encapsulant of traditional photoinitiator and the preferred embodiments of the present invention.
Fig. 2-5 is for illustrating the synoptic diagram according to the manufacture method of the liquid crystal panel of the preferred embodiment of the present invention.
[primary clustering symbol description]
100: liquid crystal panel
110: infrabasal plate
120: encapsulant
122: cavity
130: liquid crystal molecule
140: the photosensitivity monomer
142: the orientation polymkeric substance
150: upper substrate
160: light source
162: optical filter
170: visible light
172: ultraviolet light
Embodiment
Fundamental purpose of the present invention provides a kind of encapsulant, and the absorption peak of its encapsulant is different with the absorption peak of photosensitivity monomer.Therefore in the manufacture process of liquid crystal panel, as long as the light of different wave length is provided, just can solidify encapsulant and polymerization photosensitivity monomer, the defect problem of avoiding photosensitivity monomer antedating response to cause respectively.Below lifting a preferred embodiment is that example elaborates; yet those skilled in the art are to be understood that; present embodiment only is a kind of embodiment under the invention spirit of the present invention, and these explanations can't cause qualification to invention which is intended to be protected with icon.
The encapsulant of embodiments of the invention comprises light trigger and resin material at least.Resin material comprises acryloyl resinoid (acryl resin), epoxy resin (Epoxy rein) or acryloyl class epoxy resin (Acryl-Epoxy resin).The absorption peak of light trigger comprises visible wavelength range.When light trigger absorption visible light, it impels resin material and light trigger to interconnect and solidifies.
Please refer to Fig. 1, it illustrates the absorption spectrum according to the light trigger of the encapsulant of traditional photoinitiator and the preferred embodiments of the present invention.Wherein light trigger A and light trigger C are traditional photoinitiator, and its main absorption peak lays respectively at 260nm and 325nm.Light trigger D is the light trigger of the encapsulant of the preferred embodiments of the present invention, and its absorption peak mainly comprises visible wavelength range, between between the 350nm to 450nm.Distinguish for the absorption peak with the photosensitivity monomer produces comparatively significantly, preferably, the absorbing wavelength of light trigger is approximately greater than 380nm, more preferably from about greater than 400nm; The absorbing wavelength of light trigger is approximately less than 450nm.
Light trigger comprises following functional group, or benzoin (ether) base, and its chemical constitution is as follows:
Y is phenyl ring for example.
Or
Benzoin (ether) base:
Wherein, R can be hydrogen or carbon number for example 4 or following aliphatic hydrocarbon residue.
In addition, the encapsulant filler (filler) that also comprises rigidizer (hardener) and mix with this rigidizer.Rigidizer crosslinked in order to as resin material comprises aminated compounds (Amine) for example.Filler comprises silicate compound (Silicate).
A kind of manufacture method of using above-mentioned encapsulant in liquid crystal panel is below proposed.Fig. 2-5 illustrates the synoptic diagram according to the manufacture method of the liquid crystal panel of the preferred embodiment of the present invention.
The manufacture method of present embodiment liquid crystal panel comprises the following steps.At first,, provide infrabasal plate 110 with reference to Fig. 2, and coating encapsulant 120 in infrabasal plate 110 with around cavity 122.Infrabasal plate 110 for example is thin film transistor base plate (TFT substrate).Wherein encapsulant 120 comprises light trigger and resin material, and the absorption peak of light trigger comprises visible wavelength range.Fill a plurality of liquid crystal molecules 130 and a plurality of photosensitivity monomer 140 in cavity 122, as shown in Figure 2.Then, provide upper substrate 150, and assembled in pairs upper substrate 150 and infrabasal plate 110, to form liquid crystal panel 100, as shown in Figure 3.Upper substrate 150 for example is a colored filter substrate.
Afterwards, with the radiation of visible light liquid crystal panel, light trigger absorbs visible light, impels resin material and light trigger to interconnect and solidifies.For instance, this step is carried out in chamber, light source 160 is provided, and provide optical filter 162 between light source 160 and liquid crystal panel 100, in order in the filtering light source 160 between the light of ultraviolet wavelength scope, in other words, be reservation light source 160 medium ultraviolet optical wavelength range light in addition, as shown in Figure 4.Light source 160 preferably can provide visible light source and ultraviolet source simultaneously.The visible light 170 that utilizes such method to produce, its wavelength, produce comparatively significantly differentiation with the absorption peak with the photosensitivity monomer, thereby avoid photosensitivity monomer absorption reaction preferably approximately greater than 400nm approximately greater than 380nm.In general, the photosensitivity monomer is very sensitive for the absorption of ultraviolet light, and the ultraviolet light of trace promptly is enough to allow the photosensitivity monomer produce reaction.Preferably, a plurality of optical filters (not illustrating) are provided, these optical filters are arranged between light source 160 and the liquid crystal panel 100 in regular turn, but but the wavelength of light of the optical filter filtering of wherein contiguous light source 160 less than the wavelength of light of the optical filter filtering of contiguous liquid crystal panel 100.For instance, this step can provide three tablet filters, and 100 is that DUV optical filter, IR are by (IR-cut) optical filter and PC-2mm optical filter in regular turn from light source 160 to liquid crystal panel.Thus, can improve the efficient of filtering ultraviolet light, also can control the visible wavelength range that is produced more accurately, avoid causing the polyreaction of photosensitivity monomer.
Then, provide voltage between upper substrate 150 and infrabasal plate 110, and, make photosensitivity monomer 140 on infrabasal plate 110 and/or upper substrate 150, aggregate into a plurality of orientation polymkeric substance 142, as shown in Figure 5 with ultraviolet light 172 irradiating liquid crystal panels 100.The voltage of exerting pressure makes liquid crystal molecule 130 to be subjected to electric field influence and rotates, and photosensitivity monomer 140 can be driven by liquid crystal molecule 130 and be equal angular and arrange.Carry out polymerization at this moment and can make that just photosensitivity monomer 140 aggregates into orientation polymkeric substance 142, and be fixed in this angle, arrange and provide tilt angle in order to guiding liquid crystal molecule 130.On the other hand, provide the method for ultraviolet light can be a variety of, for instance, in the present embodiment, by removing optical filter 162 directly with light source 160 direct irradiation liquid crystal panels 100 originally, so that ultraviolet light to be provided.Be noted that this moment, light source was not limited to only produce ultraviolet light, preferably produced ultraviolet light and visible light simultaneously, further to carry out the curing reaction of encapsulant.Comprehensive these two steps, these two steps can be used identical light source, or even the light source identical with routine, as long as see through the outgoing wavelength that optical filter changes light, just can carry out this binomial manufacture process respectively.Reduce manufacturing cost significantly.
At last, heated sealant material 120 makes rigidizer and resin material bond and solidifies, and finishes the manufacturing of liquid crystal panel 100 thus.
In addition, provide visible-light curing encapsulant and uv photopolymerization photosensitivity monomer methods to be not limited to above-mentioned method respectively.For instance, provide visible light source, wherein the exposure power of visible light source is approximately greater than 50mW/cm
2, in order to solidify encapsulant in advance.Another ultraviolet source is provided again, carries out the photosensitivity monomer polymerization reactions.
Please refer to Fig. 4, the liquid crystal panel 100 that manufactures according to above-mentioned manufacture process comprises upper substrate 150, infrabasal plate 110, liquid crystal layer and encapsulant 120.Liquid crystal layer is between upper substrate 150 and infrabasal plate 110, and liquid crystal layer comprises the orientation polymkeric substance 142 that is attached in upper substrate 150 and the infrabasal plate 110 at least one.Encapsulant 120 is arranged between upper substrate 150 and the infrabasal plate 110, and in order to liquid crystal layer is sealed between upper substrate 150 and the infrabasal plate 110, wherein encapsulant 120 comprises light trigger, and the absorption peak of light trigger comprises visible wavelength range.
The described encapsulant of the above embodiment of the present invention, liquid crystal panel and manufacture method thereof, its encapsulant adopts special light trigger, its absorption peak mainly comprises visible wavelength range, is different from the absorption peak that mainly falls within the ultraviolet wavelength scope of photosensitivity monomer.Thus, as long as use encapsulant of the present invention, just can be effectively in conjunction with the auxiliary alignment technique (PSA) of polymerization macromolecule and formula injection method (ODF) technology of dripping.In addition, in the manufacture process of liquid crystal panel, need only the radiation wavelength that changes light by optical filter, just can use same light source, carry out two manufacture processes respectively: solidify encapsulant and polymerization photosensitivity monomer.Can reduce manufacturing cost significantly.
In sum, though the present invention describes as above with preferred embodiment, it is not in order to limit the present invention.The general technical staff of the technical field of the invention is not breaking away from the spirit and scope of the invention, can do various changes and modification.Therefore, protection scope of the present invention is as the criterion with the scope that its claim was defined.
Claims (18)
1. liquid crystal panel, it comprises:
Upper substrate;
Infrabasal plate;
Liquid crystal layer, it is between this upper substrate and this infrabasal plate, and this liquid crystal layer comprises at least one the orientation polymkeric substance that is attached in this upper substrate and this infrabasal plate, and described orientation polymkeric substance is made by the photosensitivity monomer; And
Encapsulant, it is arranged between this upper substrate and the infrabasal plate, in order to this liquid crystal layer is sealed between this upper substrate and this infrabasal plate, wherein the sealing material comprises light trigger, the absorption peak of this light trigger is different from the absorption peak of photosensitivity monomer, and the absorption peak of this light trigger comprises visible wavelength range.
2. liquid crystal panel as claimed in claim 1, wherein the absorbing wavelength of this light trigger is greater than 380nm.
3. liquid crystal panel as claimed in claim 1, wherein the absorbing wavelength of this light trigger is less than 450nm.
4. liquid crystal panel as claimed in claim 1, wherein this light trigger comprises following functional group:
Wherein, Y is a phenyl ring.
5. liquid crystal panel as claimed in claim 1, wherein this light trigger comprises benzoin (ether) class functional group, its chemical constitution is as follows:
Wherein, R is hydrogen or the aliphatic hydrocarbon residue of carbon number below 4.
6. liquid crystal panel as claimed in claim 1, wherein the sealing material also comprises:
Resin material;
Rigidizer, crosslinked in order to as this resin material; And
Filler comprises silicate compound, and it mixes with this rigidizer.
7. the manufacture method of a liquid crystal panel comprises:
Infrabasal plate is provided;
With around cavity, wherein the sealing material comprises light trigger and resin material to the coating encapsulant on this infrabasal plate, and the absorption peak of this light trigger comprises visible wavelength range;
Fill a plurality of liquid crystal molecules and a plurality of photosensitivity monomer in this cavity;
Upper substrate is provided, and this upper substrate of assembled in pairs and this infrabasal plate, to form liquid crystal panel;
With this liquid crystal panel of radiation of visible light, this light trigger absorbs this visible light, thereby impels this resin material and this light trigger to interconnect and solidify; And
Provide voltage between this upper substrate and infrabasal plate, and with this liquid crystal panel of UV-irradiation, make these photosensitivity monomers at least one of this infrabasal plate and this upper substrate, aggregate into a plurality of orientation polymkeric substance.
8. manufacture method as claimed in claim 7, wherein the step with this this liquid crystal panel of radiation of visible light comprises:
Visible light source is provided.
9. manufacture method as claimed in claim 8, wherein the exposure power of this visible light source is greater than 50mW/cm
2
10. manufacture method as claimed in claim 7, wherein the step with this this liquid crystal panel of radiation of visible light comprises:
Light source is provided; And
Provide optical filter between this light source and this liquid crystal panel, in order in this light source of filtering between the light of ultraviolet wavelength scope.
11. manufacture method as claimed in claim 10, wherein the exposure power of this light source is greater than 50mW/cm
2
12. manufacture method as claimed in claim 10, wherein this provides the step of this optical filter also to comprise:
A plurality of optical filters are provided, and these optical filters are arranged between this light source and this liquid crystal panel in regular turn, but but the wavelength of light of the optical filter filtering of wherein contiguous this light source less than the wavelength of light of the optical filter filtering of contiguous this liquid crystal panel.
13. manufacture method as claimed in claim 7, wherein the absorbing wavelength of this light trigger is greater than 380nm.
14. manufacture method as claimed in claim 7, wherein the absorbing wavelength of this light trigger is less than 450nm.
15. manufacture method as claimed in claim 7, wherein this light trigger comprises following functional group:
Wherein, Y is a phenyl ring.
16. manufacture method as claimed in claim 7, wherein this light trigger comprises benzoin (ether) base, and its chemical constitution is as follows:
Wherein, R is hydrogen or the aliphatic hydrocarbon residue of carbon number below 4.
17. manufacture method as claimed in claim 7, wherein the sealing material also comprises:
Rigidizer, its crosslinked in order to as this resin material; And
Filler comprises silicate compound, and it mixes with this rigidizer.
18. manufacture method as claimed in claim 17 also comprises:
Heating sealing material makes this rigidizer and this resin material bonding and solidifies.
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| CNB200610090852XA CN100399138C (en) | 2006-06-26 | 2006-06-26 | Liquid crystal panel and its manufacturing method |
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| CNB200610090852XA CN100399138C (en) | 2006-06-26 | 2006-06-26 | Liquid crystal panel and its manufacturing method |
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| CN100399138C true CN100399138C (en) | 2008-07-02 |
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| TWI384298B (en) | 2008-10-09 | 2013-02-01 | Au Optronics Corp | Liquid crystal display panel and manufacturing method thereof |
| JP5630014B2 (en) | 2009-01-30 | 2014-11-26 | ソニー株式会社 | Manufacturing method of liquid crystal display device |
| JP5630013B2 (en) | 2009-01-30 | 2014-11-26 | ソニー株式会社 | Manufacturing method of liquid crystal display device |
| KR101358223B1 (en) | 2009-12-10 | 2014-02-06 | 엘지디스플레이 주식회사 | Alignment layer, liquid crystal display device, and mehtod of fabricating thereof |
| KR101663563B1 (en) | 2009-12-24 | 2016-10-07 | 엘지디스플레이 주식회사 | Methode of fabricating liquid crystal display device |
| CN102279486A (en) * | 2010-06-08 | 2011-12-14 | 统炀企业有限公司 | Forming method for liquid crystal alignment layer |
| CN102279487B (en) * | 2010-06-10 | 2013-08-07 | 统炀企业有限公司 | Method for forming liquid crystal alignment layer by undergoing photopolymerization reaction |
| CN102436098A (en) * | 2011-12-21 | 2012-05-02 | 深圳市华星光电技术有限公司 | Aligning equipment and method for polymer-stabilized vertically-aligned liquid crystal panel |
| CN104570451B (en) * | 2012-11-29 | 2017-05-24 | 京东方科技集团股份有限公司 | Method for manufacturing display equipment |
| CN102981301B (en) * | 2012-11-29 | 2015-01-14 | 京东方科技集团股份有限公司 | Manufacture method of display equipment |
| CN103852932A (en) * | 2012-12-07 | 2014-06-11 | 群康科技(深圳)有限公司 | Liquid crystal display panel and manufacturing method thereof |
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| CN104536210B (en) * | 2015-02-03 | 2017-09-29 | 京东方科技集团股份有限公司 | A kind of preparation method of alignment film printing plate |
| CN104635383B (en) * | 2015-02-06 | 2017-08-18 | 深圳市华星光电技术有限公司 | The method for manufacturing alignment film of liquid crystal panel |
| CN105093686B (en) * | 2015-02-06 | 2018-01-12 | 深圳市华星光电技术有限公司 | Liquid crystal orienting film preparation method and reaction board |
| US11155754B2 (en) | 2015-07-24 | 2021-10-26 | Sumitomo Chemical Company, Limited | Composition and display device |
| CN105602459B (en) * | 2016-01-05 | 2018-09-11 | 京东方科技集团股份有限公司 | A kind of sealant, display panel and display device |
| CN106405946A (en) * | 2016-11-29 | 2017-02-15 | 深圳市华星光电技术有限公司 | Sealant curing method and liquid crystal panel manufacturing method |
| CN107402477B (en) * | 2017-09-22 | 2020-11-24 | 京东方科技集团股份有限公司 | Display panel, preparation method thereof and display device |
| CN109633992A (en) * | 2019-01-10 | 2019-04-16 | 惠科股份有限公司 | Display panel and preparation method thereof |
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