CN102219876A - Macromolecular liquid crystal alignment polymer and method for manufacturing liquid crystal display device by utilizing same - Google Patents
Macromolecular liquid crystal alignment polymer and method for manufacturing liquid crystal display device by utilizing same Download PDFInfo
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- CN102219876A CN102219876A CN2010101487134A CN201010148713A CN102219876A CN 102219876 A CN102219876 A CN 102219876A CN 2010101487134 A CN2010101487134 A CN 2010101487134A CN 201010148713 A CN201010148713 A CN 201010148713A CN 102219876 A CN102219876 A CN 102219876A
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Abstract
The invention provides macromolecular liquid crystal alignment polymer and a method for manufacturing a liquid crystal display device by utilizing the same. The macromolecular liquid crystal alignment polymer is prepared from a first polymerization monomer and a second polymerization monomer through polymerization reaction, and is formed on relatively parallel surfaces of two transparent substrates of the liquid crystal device, so that liquid crystal molecules positioned between the transparent substrates can be aligned. Compared with a method that an alignment layer is needed to be arranged on the transparent substrate first in the conventional liquid crystal display, the method has the advantages that: the production process is effectively simplified, and the cost of the conventional alignment layer is reduced.
Description
Technical field
The method that the present invention relates to a kind of LCD alignment polymkeric substance and make liquid crystal indicator relates in particular to a kind of method that is applied to the high molecule liquid crystal orientation polymkeric substance of liquid-crystal display and uses this high molecule liquid crystal orientation polymkeric substance manufacturing liquid crystal indicator.
Background technology
The LCD alignment technology is the gordian technique that determines a shown image quality of liquid crystal indicator.Have the interior liquid crystal material of display panels only and have stable and uniform initial arrangement, just can present high-quality picture.Have the thin layer that is used for inducing the arrangement of liquid crystal molecular orientation in the general liquid crystal indicator, be called liquid crystal alignment layer (alignment layers).
On industrial processes, it is evenly distributed often to utilize friction method (rubbing method) that liquid crystal molecule is able to, earlier with liquid crystal alignment layer through the mechanicalness friction, as the TWEED that evenly moves etc., make little groove that generation is arranged in parallel on the liquid crystal orienting film, can reach the orientation of liquid crystal molecule.The liquid crystal alignment layer material that is used in liquid crystal indicator at present includes polystyrene, polyimide, polyvinyl alcohol, polyester, Resins, epoxy, polyurethane, polysilane etc.Wherein, the most common and that generally be used is polyimide (polyimide).Because the molecule of polyimide is because of having imide (imide), make high polymer main chain have very high rigidity (rigidity) and very strong Intermolecular Forces, and possess extremely excellent uniformity and weather resistance, therefore look good with the use of friction method operation.Use the processing of mechanicalness friction method has with low cost, operation stable, the orientation uniformity coefficient is good and control advantage such as tilt angle easily, be widely used in the manufacturing of liquid crystal panel.
Tradition is made the process of liquid crystal indicator, needing earlier the substrate on the liquid crystal indicator to be carried out LCD alignment handles, after respectively two substrates being cleaned, carry out again the surface of this substrate is handled with liquid crystal alignment layer material, finish the LCD alignment operation with the friction method at last.Substrate after handling through LCD alignment could be organized operations such as upright, cutting, liquid crystal injection again.That is to say to have the orientation ability, need just to be used through complicated formality method earlier, in the reasonable time of expending and tooling cost for making the substrate on the liquid crystal indicator.In addition, when rubbing method treatment solution crystal alignment, can produce static and micronic dust, and destroy thin type transistor or pollute etc., and reduce the quality of liquid crystal indicator.
Developed a kind of multiple vertical alignment liquid crystal display device (Multi-domain Vertically Aligned Liquid Crystal Display at present, MVA-LCD), for having to bear, utilization lure the both alignment layers of electric anisotropy type liquid crystal and vertical direction to make up mutually to reach the effect of vertical orientation.This kind liquid crystal indicator has excellent contrast gradient and wide viewing angle, and its both alignment layers can carry out the processing of aforementioned friction method, and is more simple at manufacture view, extensively accepted by industry.Yet this liquid crystal indicator still need dispose the both alignment layers of kinds such as polyimide, and the complicated degree in manufacturing process can't reduce, the polyimide of high price made the cost of making this type of liquid crystal indicator effectively to reduce.
Summary of the invention
Main purpose of the present invention is to reduce the liquid crystal indicator operation, and reduces and make required cost.For reaching above-mentioned purpose, the invention provides a kind of high molecule liquid crystal orientation polymkeric substance, it is to carry out the polyreaction gained mutually with first polymerization single polymerization monomer and second polymerization single polymerization monomer, it is characterized in that this first polymerization single polymerization monomer can be following formula (I), formula (II), formula (III) or formula (IV) compound:
Wherein, A is the alkyl or the alkylhalide group of C 〉=1, and Y then can be selected from the group that hydroxy, alkyl, ammonium root and hydrogen base are formed, and X then is the functional group suc as formula (1) or formula (2):
L is the alkyl or the alkoxyl group of C 〉=1, R
1Be hydrogen base or methyl;
The group that the optional formula V freely of this second polymerization single polymerization monomer is formed to formula (VIII):
Wherein, o is 〉=1 integer, R
2Be methyl or hydrogen base, B then can be selected from the group that hydroxy, methyl and hydrogen base are formed.
In addition, the present invention also provides a kind of application of aforementioned high molecule liquid crystal orientation polymkeric substance to make the method for liquid crystal indicator, it is characterized in that, comprises that step has:
A) provide two corresponding parallel transparency carriers, and between these two transparency carriers, form a liquid crystal accommodation space;
B) liquid crystal material and aforementioned first polymerization single polymerization monomer and second polymerization single polymerization monomer are sealed in this liquid crystal accommodation space; And
C) this first polymerization single polymerization monomer of polymerization and this second polymerization single polymerization monomer, this transparency carrier corresponding to the surface of this liquid crystal accommodation space on form a high molecule liquid crystal orientation polymkeric substance.
In another embodiment of the present invention, this method also has a step that applies voltage between step b) and step c), make this liquid crystal material and aforementioned first polymerization single polymerization monomer and second polymerization single polymerization monomer all deflect to a pre-determined direction, pass through step c) this first polymerization single polymerization monomer of polymerization and this second polymerization single polymerization monomer again and form vertical orientation, strengthen anchorage force (anchoring force).
Wherein, in step b), (One Drop Fill ODF) is sealed in this liquid crystal accommodation space this liquid-crystal composition with perfusion (Injection) or liquid crystal drop laxative remedy.And in step c), this formula (I) utilizes UV-irradiation to carry out polyreaction with the polymerization single polymerization monomer shown in the formula (II).
In the present invention, this first polymerization single polymerization monomer and this second polymerization single polymerization monomer utilize the energy rayed to carry out polyreaction, and this energy light is visible light or UV-light.This first polymerization single polymerization monomer and this second polymerization single polymerization monomer carry out polyreaction with the weight ratio between 1: 2.5 and 1: 50.For increasing the efficient of polyreaction, before carrying out polyreaction, this first polymerization single polymerization monomer and this second polymerization single polymerization monomer can add a sclerosis initiator; This sclerosis initiator is 0.01% to 1% addition to the weight percent of liquid crystal material.
Via as can be known above, high molecule liquid crystal orientation polymkeric substance of the present invention and use this high molecule liquid crystal orientation polymkeric substance and make the method for liquid crystal indicator and be compared to the beneficial effect that prior art reaches:
One, the present invention effectively simplifies the manufacturing process of liquid crystal indicator, manufacture method compared to conventional liquid crystal, needn't earlier both alignment layers be coated on the substrate, operation also need not rub this both alignment layers, therefore, be minimized manufacturing lead time and alignment layer material cost, as pi;
Two, the present invention can avoid using the friction method may cause the problem of product fine rate decline.
Description of drawings
Fig. 1-1 makes the preferred embodiment work flow synoptic diagram of the method for liquid crystal indicator for the present invention one to Fig. 1-4.
Embodiment
Relevant detailed description of the present invention and technology contents, existing accompanying drawings is as follows:
The present invention is a kind of high molecule liquid crystal orientation polymkeric substance, and it is to carry out the polyreaction gained mutually with first polymerization single polymerization monomer and second polymerization single polymerization monomer, and wherein, this first polymerization single polymerization monomer can be following formula (I), formula (II), formula (III) or formula (IV) compound:
Wherein, A is the alkyl or the alkylhalide group of C 〉=1, as
Deng the functional group, h is 〉=1 odd number; Person very, A can be
Y then can be hydroxy, alkyl, ammonium root or hydrogen base; Further, Y can be straight chain type or the branch chain type alkyl of C1～C6;
X then is the functional group suc as formula (1) or formula (2):
L is the alkyl or the alkoxyl group of C 〉=1, R
1Be hydrogen base or methyl; More precisely, this L can be
Functional group, m, n are 〉=1 integer.
Among the present invention, the group that the optional formula V freely of this second polymerization single polymerization monomer is formed to formula (VIII):
Wherein, o is 〉=1 integer, R
2Be methyl or hydrogen base, B then can be selected from the group that hydroxy, methyl and hydrogen base are formed.
Wherein, this first polymerization single polymerization monomer and this second polymerization single polymerization monomer carry out polyreaction with the weight ratio between 1: 2.5 and 1: 50.This first polymerization single polymerization monomer and this second polymerization single polymerization monomer utilize the energy rayed to carry out polyreaction to form high molecule liquid crystal orientation polymkeric substance, and this energy light can be visible light or UV-light.For quickening polyreaction, this first polymerization single polymerization monomer and this second polymerization single polymerization monomer carry out more can adding a sclerosis initiator before the polyreaction, especially a kind of ultraviolet light photopolymerization initiator or visible light sclerosis initiator.
The present invention also provides a kind of application of aforementioned high molecule liquid crystal orientation polymkeric substance to make the method for liquid crystal indicator, comprises that step has:
A) provide two corresponding parallel transparency carriers, and between these two transparency carriers, form a liquid crystal accommodation space;
B) liquid crystal material and aforementioned first polymerization single polymerization monomer and second polymerization single polymerization monomer are sealed in this liquid crystal accommodation space; And
C) this first polymerization single polymerization monomer of polymerization and this second polymerization single polymerization monomer, this transparency carrier corresponding to the surface of this liquid crystal accommodation space on form a high molecule liquid crystal orientation polymkeric substance.
Consult Fig. 1-1 to shown in Fig. 1-4, make the preferred embodiment work flow synoptic diagram of the method for liquid crystal indicator for the present invention.As Figure 1-1, at first, be arranged in parallel two corresponding transparency carrier 10a, 10b are separated by with a plurality of spherical particles or pillar stiffener (not shown) between this substrate 10a and the 10b, to form a liquid crystal accommodation space 12.This transparency carrier 10a, 10b is last and be positioned at this liquid crystal accommodation space 12 is provided with an electrode 11a, the 11b that is electrically connected at the thin film transistor (not shown) respectively respectively at least corresponding to two surfaces.Wherein, this transparency carrier 10a, 10b can be glass, quartz or soft plastic transparent materials such as (as PET).The applicable liquid crystal indicator of the present invention comprises MVA (Multi-domain Vertical Alignment), ASV (Advanced Super-V), PVA (Patterned Vertical Alignment), PSA wide viewing angle liquid crystal display devices such as (Polymer Stable Alignment).
Moreover, shown in Fig. 1-2, a liquid crystal material 20 and aforementioned first polymerization single polymerization monomer 31 and second polymerization single polymerization monomer 32 are sealed in the liquid crystal accommodation space 12 between this transparency carrier 10a and the 10b; Wherein, this liquid crystal material 20 can be the vertical orientation liquid crystal material, this liquid crystal material 20 and this first, second polymerization single polymerization monomer 31,32 can perfusion (Injection) or the liquid crystal drop laxative remedy (One Drop Fill ODF) is sealed in this liquid crystal accommodation space 12.
In the present invention, can select whether drive this electrode 11a, 11b and impose voltage in this transparency carrier 10a, 10b by this thin film transistor.If when applying voltage, this liquid crystal material 20 and this first, second polymerization single polymerization monomer 31,32 can produce according to voltage direction and deflect to a pre-determined direction accordingly, as Figure 1-3, reach the purpose that multidirectional line is arranged.So, the be increased vertical orientation ability of liquid-crystal display.If no-voltage puts on this transparency carrier 10a, 10b, carry out the liquid-crystal display of the pre-ranking method made of liquid crystal, the lifting of its contrast ability is more not obvious.
At last, carry out this first polymerization single polymerization monomer 31 and this second polymerization single polymerization monomer, 32 step of polymerization.In the present invention, this first polymerization single polymerization monomer 31 and this second polymerization single polymerization monomer 32 for by energy light 40 irradiation backs this transparency carrier 10a, 10b corresponding to the surface of this liquid crystal accommodation space 12 on form a high molecule liquid crystal orientation polymkeric substance 30, shown in Fig. 1-4.This energy light 40 that is used for carrying out polyreaction is visible light or UV-light.If desire shortens the polymerization reaction time of this first polymerization single polymerization monomer 31 and this second polymerization single polymerization monomer 32, in the step b), also a sclerosis initiator (not shown) can be sealed in this liquid crystal accommodation space 12 together, and promote the polymerization efficiency of this first polymerization single polymerization monomer 31 and this second polymerization single polymerization monomer 32; The weight percent of this sclerosis initiator and liquid crystal material 20 is 0.01% to 1% addition, and this sclerosis initiator can be ultraviolet light photopolymerization initiator or visible light sclerosis initiator.
In sum, high molecule liquid crystal orientation polymkeric substance of the present invention and the method for using this high molecule liquid crystal orientation polymkeric substance manufacturing liquid crystal indicator, undertaken directly on transparency carrier, forming a high molecule liquid crystal orientation polymkeric substance after the polyreaction by first polymerization single polymerization monomer and this second polymerization single polymerization monomer, make this liquid crystal material be reached the purpose of orientation.The present invention is compared to the beneficial effect that prior art reaches:
One, simplifies the program that must earlier both alignment layers be coated in the past on the transparency carrier,, also saved high material cost because need not to be provided with expensive liquid crystal alignment layer material (as pi) except the needed time of liquid crystal indicator is made in reduction.
Two, in addition,, can not produce static and micronic dust, improve the good rate of product relatively because the present invention need not use mechanicalness orientation processing such as friction method.
Below the present invention is made a detailed description, just the above only is a preferred embodiment of the present invention, and can not limit scope of the invention process.Be that all equalizations of doing according to the present patent application scope change and modification etc. all should still drop in the patent covering scope of the present invention.
Graphic symbol description
The transparent substrate 11a of 10a, 10b...., 11b.... electrode
12.... liquid crystal accommodation space 20.... liquid crystal material
30.... high molecule liquid crystal orientation polymkeric substance 31.... first polymerization single polymerization monomer
32.... the second polymerization single polymerization monomer 40.... energy light.
Claims (23)
1. high molecule liquid crystal orientation polymkeric substance, described high molecule liquid crystal orientation polymkeric substance is characterized in that for to carry out the polyreaction gained mutually with first polymerization single polymerization monomer and second polymerization single polymerization monomer,
Described first polymerization single polymerization monomer can be selected from the group of being formed to formula (IV) suc as formula (I):
Wherein, A is the alkyl or the alkylhalide group of C 〉=1, and Y then is selected from the group that hydroxy, alkyl, ammonium root and hydrogen base are formed, and X then is the functional group suc as formula (1) or formula (2):
L is the alkyl or the alkoxyl group of C 〉=1, R
1Be hydrogen base or methyl;
Described second polymerization single polymerization monomer is selected from the group of being formed to formula (VIII) as formula V:
Wherein, o is 〉=1 integer, R
2Be methyl or hydrogen base, B then is selected from the group that hydroxy, methyl and hydrogen base are formed.
2. high molecule liquid crystal orientation polymkeric substance according to claim 1 is characterized in that described A is
The functional group.
3. high molecule liquid crystal orientation polymkeric substance according to claim 1 is characterized in that described A is
Or
Functional group, h are 〉=1 odd number.
4. high molecule liquid crystal orientation polymkeric substance according to claim 1 is characterized in that described Y is the alkyl of C1～C6.
5. high molecule liquid crystal orientation polymkeric substance according to claim 1 is characterized in that described L is
Or
Functional group, m, n are 〉=1 integer.
6. high molecule liquid crystal orientation polymkeric substance according to claim 1 is characterized in that, described first polymerization single polymerization monomer and described second polymerization single polymerization monomer carry out polyreaction with the weight ratio between 1: 2.5 and 1: 50.
7. high molecule liquid crystal orientation polymkeric substance according to claim 1 is characterized in that, described first polymerization single polymerization monomer and described second polymerization single polymerization monomer carry out also adding a sclerosis initiator before the polyreaction.
8. according to claim 1 or 7 described high molecule liquid crystal orientation polymkeric substance, it is characterized in that described first polymerization single polymerization monomer and described second polymerization single polymerization monomer utilize the energy rayed to carry out polyreaction.
9. high molecule liquid crystal orientation polymkeric substance according to claim 8 is characterized in that described energy light is visible light or UV-light.
10. use the method that high molecule liquid crystal orientation polymkeric substance according to claim 1 is made liquid crystal indicator for one kind, it is characterized in that, comprise that step has:
Two corresponding parallel transparency carriers (10a, 10b) are provided, and between described two transparency carriers (10a, 10b), form a liquid crystal accommodation space (12);
One liquid crystal material (20), one first polymerization single polymerization monomer (31) and one second polymerization single polymerization monomer (32) are sealed in the described liquid crystal accommodation space (12), and wherein, described first polymerization single polymerization monomer (31) is selected from the group of being formed to formula (IV) suc as formula (I):
Wherein, A is the alkyl or the alkylhalide group of C 〉=1, and Y then is selected from the group that hydroxy, alkyl, ammonium root and hydrogen base are formed, and X then is the functional group suc as formula (1) or formula (2):
L is the alkyl or the alkoxyl group of C 〉=1, R
1Be hydrogen base or methyl;
Described second polymerization single polymerization monomer (32) is selected from the group of being formed to formula (VIII) as formula V:
Wherein, o is 〉=1 integer, R
2Be methyl or hydrogen base, B then is selected from the group that hydroxy, methyl and hydrogen base are formed; And
Described first polymerization single polymerization monomer of polymerization (31) and described second polymerization single polymerization monomer (32), described transparency carrier (10a, 10b) corresponding to the surface of described liquid crystal accommodation space (12) on form a high molecule liquid crystal orientation polymkeric substance (30).
11. the method for manufacturing liquid crystal indicator according to claim 10 is characterized in that, also has a step that applies voltage.
12. the method for manufacturing liquid crystal indicator according to claim 10 is characterized in that, with perfusion described liquid-crystal composition is sealed in the described liquid crystal accommodation space (12).
13. the method for manufacturing liquid crystal indicator according to claim 10 is characterized in that, with the liquid crystal drop laxative remedy described liquid-crystal composition is sealed in the described liquid crystal accommodation space (12).
14. the method for manufacturing liquid crystal indicator according to claim 10 is characterized in that, described A is
The functional group.
15. the method for manufacturing liquid crystal indicator according to claim 10 is characterized in that, described A is
Or
Functional group, h are 〉=1 odd number.
16. the method for manufacturing liquid crystal indicator according to claim 10 is characterized in that, described L is
Or
Functional group, m, n are 〉=1 integer.
17. the method for manufacturing liquid crystal indicator according to claim 10 is characterized in that, described Y is the alkyl of C1～C6.
18. the method for manufacturing liquid crystal indicator according to claim 10 is characterized in that, makes described first polymerization single polymerization monomer (31) and described second polymerization single polymerization monomer (32) carry out polyreaction with the weight ratio between 1: 2.5 and 1: 50.
19. the method according to the described manufacturing liquid crystal indicator of claim 10 is characterized in that, also adds a sclerosis initiator before described first polymerization single polymerization monomer (31) and described second polymerization single polymerization monomer (32) carry out polyreaction.
20. the method for manufacturing liquid crystal indicator according to claim 19 is characterized in that, the weight percent of described sclerosis initiator and liquid crystal material (20) is 0.01% to 1% addition.
21. the manufacture method according to claim 10 or 19 described liquid crystal indicators is characterized in that, utilizes energy light (40) irradiation to make described first polymerization single polymerization monomer (31) and described second polymerization single polymerization monomer (32) carry out polyreaction.
22. the manufacture method of liquid crystal indicator according to claim 21 is characterized in that, described energy light (40) is visible light or UV-light.
23. the manufacture method of liquid crystal indicator according to claim 10 is characterized in that, described liquid crystal material (20) is the vertical orientation liquid crystal material.
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| CN104737068A (en) * | 2012-10-19 | 2015-06-24 | 夏普株式会社 | Liquid-crystal display device and process for producing liquid-crystal display device |
| WO2016082260A1 (en) * | 2014-11-28 | 2016-06-02 | 深圳市华星光电技术有限公司 | Display panel and manufacturing method therefor |
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