CN100392501C - Liquid crystal turning additive, liquid crystal display device containing it and manufacturing method - Google Patents
Liquid crystal turning additive, liquid crystal display device containing it and manufacturing method Download PDFInfo
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- CN100392501C CN100392501C CNB2005100591318A CN200510059131A CN100392501C CN 100392501 C CN100392501 C CN 100392501C CN B2005100591318 A CNB2005100591318 A CN B2005100591318A CN 200510059131 A CN200510059131 A CN 200510059131A CN 100392501 C CN100392501 C CN 100392501C
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- 230000003287 optical effect Effects 0.000 claims abstract description 68
- 238000000034 method Methods 0.000 claims abstract description 32
- 238000003892 spreading Methods 0.000 claims abstract description 23
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- 230000003446 memory effect Effects 0.000 claims abstract description 15
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- 239000000203 mixture Substances 0.000 claims description 26
- 238000005452 bending Methods 0.000 claims description 25
- 239000000126 substance Substances 0.000 claims description 22
- 239000002671 adjuvant Substances 0.000 claims description 20
- 238000006116 polymerization reaction Methods 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 7
- 239000004642 Polyimide Substances 0.000 claims description 5
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- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000009738 saturating Methods 0.000 claims description 2
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Abstract
The present invention provides an additive of optical compensation double refraction type liquid crystal alignment, a liquid crystal display device comprising the additive and a making method. The additive of the optical compensation double refraction type liquid crystal alignment comprises one or more than one single body capable of gathering, wherein the single body capable of gathering can form a polymer with a liquid crystal array memory effect after shone, and thus, a liquid crystal molecule can be quickly converted into a bent state from an obliquely spreading state along the mnemonic direction of the polymer; accordingly, the liquid crystal display device can quickly reach a steady state through only general drive and does not need to use a special high pressure driving circuit.
Description
Technical field
The present invention relates to a kind of liquid crystal indicator, particularly relate to the liquid crystal indicator of a kind of optical compensation birefringence (optically compensated birefringence) mode.
Background technology
LCD is because of having the frivolous small and exquisite advantage of low diathermaneity and volume, so day by day be widely used in the practical application.
Yet when the user watched LCD from different perspectives, along with the increase at visual angle, contrast (contrast ratio) but can be successively decreased, thereby produced the restriction at visual angle.In addition, the speed of answering of present liquid crystal indicator still dislikes not enough slightly, and this makes and often be detained obfuscation because of image in the demonstration of dynamic image.Compare with the CRT display device, present LCD still is inferior to the CRT display device in this regard.In the system that American National television standard meeting (NTSC) is announced, require the LCD must be at frame display video signal at least in (16.7 milliseconds) time.Though present LCD is showing between the white and black to have gratifying high reaction velocity, but its reactivity in the response between the multiple GTG but slowly arrives tens of milliseconds, especially in effective lower zone of driving voltage difference, the response time between the GTG is very slow especially.Therefore, how increasing the visual angle of LCD and speed its reaction velocity, to improve the image quality of LCD, is one of present industrial community problem of endeavouring to solve.
In order to address the above problem, a kind of use optical compensation birefringence (opticallycompensated birefringence, OCB) liquid crystal indicator of pattern have been researched and developed.With reference to Fig. 1, this figure is the sectional structure chart of existing optical compensation birefringence LCD 10 (OCB LCD).LCD 10 comprises upper substrate 20 and infrabasal plate 50.The below of upper substrate 20 is formed with top electrode 22 and last alignment film 24 in regular turn, and infrabasal plate 50 comprises that then formation bottom electrode 52 thereon reaches alignment film 54 down.Clip liquid crystal layer 40 between upper substrate and the infrabasal plate, wherein liquid crystal layer 40 is made of a plurality of liquid crystal molecule 42.With reference to Fig. 2 a～2c, this figure be optical compensation birefringence LCD 10 under different voltages, the synoptic diagram of the arrangement mode of liquid crystal molecule.Liquid crystal layer 40 comprises the first liquid crystal region A, the second liquid crystal region B and the 3rd liquid crystal region C.The liquid crystal molecule 42 of the first liquid crystal region A contacts with last alignment film 24, and the liquid crystal molecule 42 of the 3rd liquid crystal region C contacts with following alignment film 54, and the second liquid crystal region B is then between the first liquid crystal region A and the 3rd liquid crystal region C.
With reference to Fig. 2 a, applying voltage is under 0 o'clock the initial state, angle between liquid crystal molecule 42 among the first liquid crystal layer region A and the 3rd liquid crystal region C and last alignment film 24 and the following alignment film 54 is very little, and the liquid crystal molecule 42 among the second liquid crystal layer region B is almost parallel with alignment film, and this moment, the ordered state of liquid crystal molecule was called spreading condition (splay state).
In Fig. 2 b, when applying voltage and increase to critical voltage Vc gradually by 0, the liquid crystal molecule among the first liquid crystal layer region A and the 3rd liquid crystal layer region C and the angle of upper and lower alignment film 24 and 54 are very little, and have only the liquid crystal molecule (central part) of the second liquid crystal layer region B of part to be close to vertical with alignment film.This moment, the ordered state of liquid crystal was called bending status (bend state), and this is the bright attitude of optical compensation birefringence LCD.
With reference to Fig. 2 c, when applying voltage and continue to increase to Vd (Vd is much larger than critical voltage Vc), liquid crystal molecule 42 and the alignment film of the second liquid crystal layer region B is close in vertical, and then this moment, display panels presented dark attitude (dark state).Because the yawing moment of liquid crystal molecule is identical in the OCB mode, can reduce the friction force between liquid crystal molecule when rotating, and Liquid Crystal Molecules Alignment is neat, so the LCD of OCB mode has the advantage of high reaction velocity and wide viewing angle.
The voltage that applies between the upper and lower panel belongs to the operating voltage interval (operation voltage range) that OCB mode liquid crystal liquid shows device in the interval of critical voltage Vc and voltage Vd.In order to reach this critical voltage Vc, OCB mode liquid crystal liquid shows that device must carry out being converted to by spreading condition the initialization procedure of bending status by applying voltage.Yet, the shortcoming of the LCD maximum of OCB mode promptly is to carry out in the initialized process, spreading condition is to there being unstable (discontinuous) attitude between the bending status (voltage increases to Vc by 0), with reference to Fig. 3, to stable state, just can drive so that make OCB mode LCD when each the use, must add high voltage earlier.So, will make the required voltage that applies that provides increase, and prolong the initialized time to several minutes.
Summary of the invention
In view of this, in order to address the above problem, fundamental purpose of the present invention provides a kind of optical compensation birefringence type LCD alignment adjuvant (optically compensated birefringence alignmentagent), it can form the polymkeric substance with liquid crystal arrangement memory effect on both alignment layers, liquid crystal can be arranged along the direction of this polymkeric substance memory, be diverted to bending status by spreading condition apace, make liquid crystal indicator when initial driving, can reach stable state fast, need not special high-tension driving loop.
In addition, another object of the present invention provides a kind of Liquid crystal disply device and its preparation method, but Improvement type optical compensation birefringence type (Premium-OCB, the P-OCB) liquid crystal indicator to obtain fast driving.
For reaching above-mentioned purpose of the present invention, optical compensation birefringence type LCD alignment adjuvant of the present invention comprises the polymerisable monomer suc as formula structure shown in (I) or the formula (II):
Formula (I)
Formula (II)
Wherein each R is identical or different, is H or CH
3N is 1～5 integer; M and 1 is 0～11 integer, is preferably 1～11 integer; And this polymerisable monomer with formula (I) or formula (II) structure does not have dipole moment or its dipole moment is not more than 0.1.
For reaching another purpose of the present invention, the manufacture method of liquid crystal indicator of the present invention may further comprise the steps:
At first, the preparation liquid-crystal composition, this liquid-crystal composition comprises liquid-crystal compounds and optical compensation birefringence type LCD alignment adjuvant, and wherein this optical compensation birefringence type LCD alignment adjuvant comprises the polymerisable monomer suc as formula structure shown in (I) or the formula (II):
Formula (I)
Formula (II)
Wherein each R is identical or different, is H or CH
3N is 1～5 integer; M and l are 0～11 integer, are preferably 1～11 integer; And this polymerisable monomer with formula (I) or formula (II) structure does not have dipole moment or its dipole moment is not more than 0.1.Provide first substrate and second substrate that be arranged in parallel, and the first surface of first substrate is relative with the second surface of second substrate.On first surface and second surface, form both alignment layers, and liquid-crystal composition is injected between first substrate and second substrate.Provide the electrode on first voltage to the first substrate and second substrate, so that liquid-crystal compounds is converted to bending status from spreading condition.When treating liquid-crystal compounds, provide second voltage, so that this liquid-crystal compounds maintains spreading condition or bending status to this liquid-crystal compounds to stable state.Keep this second voltage, and apply energy, make it have the liquid crystal arrangement memory effect with the polymerisable monomer that polymerization has formula (I) or formula (II) structure.
Liquid crystal indicator of the present invention, comprise first substrate, second substrate, be respectively formed at both alignment layers, the liquid crystal layer on first surface and the second surface and have the polymkeric substance of liquid crystal arrangement memory effect with second surface with first surface, and second substrate and first substrate be arranged in parallel, and first surface is relative with second surface.Wherein, described have the polymkeric substance of liquid crystal arrangement memory effect and the generation type of liquid crystal layer may further comprise the steps:
The preparation liquid-crystal composition, this liquid-crystal composition comprises liquid-crystal compounds and optical compensation birefringence type LCD alignment adjuvant, and wherein this optical compensation birefringence type LCD alignment adjuvant comprises the polymerisable monomer suc as formula structure shown in (I) or the formula (II):
Formula (I)
Formula (II)
Wherein each R is identical or different, is H or CH
3N is 1～5 integer; M and l are 0～11 integer, are preferably 1～11 integer; And this polymerisable monomer with formula (I) or formula (II) structure does not have dipole moment or its dipole moment is not more than 0.1.Liquid-crystal composition is injected between first substrate and second substrate.Provide first voltage so that the liquid-crystal compounds of liquid crystal layer is converted to bending status from spreading condition.When treating liquid-crystal compounds to stable state, provide second voltage to this liquid-crystal compounds, so that this liquid-crystal compounds maintains spreading condition or bending status, and keep second voltage, and this has the polymerisable monomer of formula (I) or formula (II) structure with polymerization to apply energy, forms the polymkeric substance with liquid crystal arrangement memory effect.
For purpose of the present invention, feature can be become apparent, hereinafter the spy enumerates preferred embodiment, and is elaborated in conjunction with the accompanying drawings.
Description of drawings
Fig. 1 is the diagrammatic cross-section of existing optical compensation birefringence LCD.
Fig. 2 a to 2c be optical compensation birefringence LCD under different voltages, the synoptic diagram of the arrangement mode of liquid crystal molecule.
Fig. 3 shows traditional OCB mode LCD, under different tilt angles (pretilt angle), and the graph of a relation of driving voltage and light transmission rate.
Fig. 4 a to 4c is the synoptic diagram of optical compensation birefringence LCD of the present invention.
Fig. 5 a and 5b show polymerisable monomer of the present invention and are not subjected to electric field influence, have identical yawing moment with liquid crystal molecule.
Fig. 6 a and 6b show that the monomer with polarity is subject to electric field influence and from horizontal deflection.
Fig. 7 is for exposing the voltage of the prepared P-OCB liquid crystal indicator that forms and the graph of a relation of brightness under different voltages.
Fig. 8 shows the operating voltage of the described liquid crystal indicator of a preferred embodiment of the present invention and the relation of brightness.
Fig. 9 is the scanning electron microscope spectrogram of the infrabasal plate side of embodiment 1 described P-OCB liquid crystal indicator.
Figure 10 is the visual angle figure of the described P-OCB liquid crystal indicator of one embodiment of the present invention.
Embodiment
According to a preferred embodiment of the invention, disclosed the manufacture method of a kind of P-OCB (Improvement type optical compensation birefringence) type liquid crystal indicator, the liquid-crystal composition that its utilization comprises optical compensation birefringence type LCD alignment adjuvant forms the polymkeric substance with liquid crystal arrangement memory effect on both alignment layers, thus, the optical compensation birefringence type liquid crystal indicator be can significantly reduce and when initial driving, required time of bending status and electric power are converted to from spreading condition, and can eliminate spreading condition to the wild effect between the bending status, obtain to respond effect faster than traditional liquid crystal indicator.
The manufacture method of this liquid crystal indicator is the preparation liquid-crystal composition earlier, and wherein liquid-crystal composition comprises optical compensation birefringence type LCD alignment adjuvant of the present invention and liquid-crystal compounds.Described optical compensation birefringence type LCD alignment adjuvant comprises the polymerisable monomer suc as formula structure shown in (I) or the formula (II):
Formula (I)
Formula (II)
Wherein each R is identical or different, is H or CH
3N is 1～5 integer; M and l are 0～11 integer, are preferably 1～11 integer; And this polymerisable monomer with formula (I) or formula (II) structure does not have dipole moment or its dipole moment is not more than 0.1.Above-mentioned percentage by weight with polymerisable monomer of structure shown in formula (I) or the formula (II) is between 0.01 to 30, and preferably between 0.1 to 15, this percentage by weight is a benchmark with the weight of liquid-crystal composition.It should be noted that, this has the polymerisable monomer of formula (I) or formula (II) structure, can be under the condition of not adding any initiator, under the effect of light or heat, carry out polyreaction voluntarily, thus, LCD can be avoided because of phenomenons such as residual image residue that causes of initiator or delayed responses.In addition, for accelerating the polymerization speed of polymerisable monomer, can use a spot of initiator, but the used in amounts of initiator is lower than 0.05 percentage by weight in principle, this percentage by weight is a benchmark with the weight of liquid-crystal composition.Described liquid-crystal compounds can be optical compensation birefringence type liquid-crystal compounds (OCB liquid crystal), the specific inductive capacity difference be preferably on the occasion of.And initiator can be for example light initiator or hot initiator.With reference to table 1, this table has shown the polymerisable monomer with formula (I) or formula (II) structure that is suitable in preferred enforcement of the present invention.It should be noted that, polymerisable monomer via synthetic gained with formula (I) or formula (II) structure, its purity must be at the composition that just can be used as optical compensation birefringence type LCD alignment adjuvant more than 80%, otherwise impure monomer can cause liquid crystal indicator not enough homogeneous on optical appearance, has a strong impact on picture quality.
Below list a plurality of polymerisable monomers of the present invention that meet, as shown in table 1.
Table 1
Then, shown in Fig. 4 a, provide first substrate 120 and second substrate 150, wherein first substrate 120 and second substrate 150 be arranged in parallel, and the first surface 121 of first substrate 120 is relative with the second surface 151 of second substrate.Be separated by with a plurality of spherical particles or support column (spacer, not shown) between first substrate 120 and second substrate 150, to constitute cavity (space) 160.First substrate 120 has the filter layer 122, first electrode 124 and first both alignment layers, 126, the second substrates that are formed in regular turn on the first surface 121 and then has second electrode 152 and second both alignment layers 154 that is formed in regular turn on the second surface 151.In one embodiment of the present invention, this liquid crystal indicator also comprises first Polarizer 130 in the outside that is formed on first substrate 120, and is formed on second Polarizer 170 in the outside of second substrate 150.It should be noted that after first and second both alignment layers 126 and 154 forms, can further impose friction treatment (rubbing treatment) both alignment layers.The alignment direction of first and second both alignment layers is identical substantially.In a preferred embodiment of the present invention, both alignment layers comprises polyimide (polyimide).
Then, liquid-crystal composition is injected in the cavity 160 between first substrate 120 and second substrate 150.The mode that liquid-crystal composition is injected into cavity can be the capillary injection method or the formula injection method that drips (ODF (one drop fill process)).After injecting fully, provide first voltage to make between first electrode and second electrode and produce potential difference (PD), and cause liquid-crystal compounds to be converted to bending status from spreading condition, wherein first voltage can be between between 1～40 volt scope.When producing potential difference (PD) between first electrode and second electrode, first electrode 124, second electrode 152 and liquid-crystal compounds constitute a class capacitance component.Then, when treating liquid-crystal compounds, provide second voltage (between 0～10V),,, in one embodiment of the present invention, can be for example bending status with reference to Fig. 4 b so that this liquid-crystal compounds maintains spreading condition or bending status to this liquid-crystal compounds to stable state.With reference to Fig. 5 a and 5b, as shown in the figure, polymerisable monomer 141 also is in bending status along with liquid-crystal compounds 142 deflections.This is because the polymerisable monomer with formula (I) or formula (II) structure used in the present invention does not have dipole moment (or have less than 0.1 dipole moment), so it is not subjected to electric field influence, can follow liquid-crystal compounds 142 deflection together.On the contrary, have the monomer (dipole moment is greater than 0.1) of polarity,, cause its yawing moment different, with reference to Fig. 6 a and 6b with liquid-crystal compounds owing to itself be subject to electric field influence.In addition, with reference to table 2, this table has shown pure liquid-crystal compounds and the electrical performance of the liquid-crystal compounds of mix respectively polar molecule or non-polar molecule.As seen from table, the leakage current of the liquid-crystal compounds of doping polar molecule is more than 100 times of liquid-crystal compounds of doping non-polar molecule.
Table 2
| Doping | Leakage current (pA) | Than resistance (ρ) | |
| Pure liquid-crystal compounds | - | 2.4 | 1.10E+14 |
| The liquid-crystal compounds of doping |
5％ | 440 | 6.90E+11 |
| The liquid-crystal compounds of doping |
5％ | 2 | 1.67E+14 |
Then, with reference to Fig. 4 c, after providing second voltage to make liquid-crystal compounds maintain spreading condition or bending status, keep this second voltage, and apply energy, make it form polymkeric substance with this polymerisable monomer of polymerization along with liquid-crystal compounds deflection together, it should be noted that, owing to being aggregated in along with liquid-crystal compounds deflection, this polymerisable monomer is formed on the both alignment layers, so formed polymkeric substance is keeping original yawing moment, so have the liquid crystal arrangement memory effect.This polymkeric substance is formed on the alignment layer surface, can make this both alignment layers have the tilt angle of spending between 1～25.Still with reference to Fig. 4 c, because polymerisable monomer 141 used in the present invention is not had a dipole moment (or dipole moment is less than 0.1), liquid crystal molecule 142 easily is pushed into multizone homeotropic alignment (the multi domain vertical alignment) position of appointment with it, so on the both sides both alignment layers 126 and 154 of the liquid crystal layer of forming by this liquid crystal Chemistry and Physics Institute 140, form functional sodium rice surface structure (functional nano-surface structure) after its polymerization, but not have monomer polymerization network (network) structure of polarity.In other words, the formed polymkeric substance 143 of monomer of the present invention is formed on first and second both alignment layers 126 and 154, is separated by by liquid crystal layer 140 each other.According to one preferred embodiment of the present invention, use this polymerisable monomer 141 of UV-irradiation to have the polymkeric substance 143 of liquid crystal arrangement memory effect with formation.With reference to Fig. 7, the figure shows under different second voltages, the expose voltage of the prepared P-OCB liquid crystal indicator that forms and the relation of brightness, by among the figure as can be known, second voltage that is applied in exposure process can influence the usefulness of the liquid crystal indicator of gained really.
For further removing remaining polymerisable monomer 141, the polymerisable monomer 141 that can utilize thermal treatment or utilize the mode of shining visible light will remain in liquid crystal layer 140 reacts completely.Wherein, heat treated temperature is in 50～250 ℃ scope.
According to other preferred embodiment of the present invention, the manufacture method of liquid crystal indicator of the present invention also is applicable on COA (Array wave filter (colorfilter on array)) formula, the saturating formula of Transflective, TN (twisted-nematic (twisted nematic)) type, MVA (multizone homeotropic alignment) type or the PMVA type LCD.
With reference to Fig. 8, the figure shows the operating voltage of liquid crystal indicator of a preferred embodiment of the present invention and the relation of brightness.Doping with polymerisable monomer of formula (I) or formula (II) structure is 3.5wt%.By among the figure as can be known, liquid crystal indicator can make liquid crystal alignment near bending status under lower initial voltage, thus can exempt liquid crystal from spreading condition to the non-continuous event between the bending status.
In addition, compare with existing optical compensation birefringence formula LCD, liquid crystal indicator of the present invention has reaction velocity (lower response time) faster.Following spy enumerates comparative example and embodiment, now with explanation.
Comparative example
Respectively with unadulterated optical-compensation bent liquid-crystal compounds A (OCB LC-A, make and sell by Merck company, Δ n=0.171, Δ ε=11.4, γ=166.0mPas), optical-compensation bent liquid-crystal compounds B (OCB LC-A, make and sell by Chisso company, Δ n=0.169, Δ ε=10.1, γ=213.0mPas) and optical-compensation bent liquid-crystal compounds C (OCB LC-C, make and sell by DIC company, Δ n=0.180, Δ ε=12.5, γ=157.0mPas) is as the liquid crystal layer of liquid crystal indicator, and use friction depth (Rubbing depth) to be respectively 0.4,0.6 and the polyimide layer of 0.8mm is tested its response time as both alignment layers.The order that voltage is supplied be 2.5V to 6.5V to 2.5V, the result of test is as shown in table 3.
Table 3
Polymerisable monomer shown in the table 19 is mixed the optical-compensation bent liquid-crystal compounds with the doping of 2.0wt% (to be made and is sold by Chisso company, the liquid crystal molecule characteristic is: among the Δ n=0.142, Δ ε=10.5, γ=35.7mPas), and inject liquid crystal indicator.Then, provide voltage to make this liquid-crystal compounds be converted to bending status from spreading condition.Then, under the voltage of 5V, irradiating ultraviolet light is with this polymerisable monomer of polymerization.Test in the mode identical with comparative example, its result is as shown in table 4.
With reference to Fig. 9, the figure illustrates sweep electron microscope (the Scanning Electron Microscope of the infrabasal plate side of embodiment 1 described P-OCB liquid crystal indicator, SEM) spectrogram, as shown in the figure, on the infrabasal plate 200 be bottom electrode 210, both alignment layers 220 and polymkeric substance 230 in regular turn with liquid crystal arrangement memory effect.Polymkeric substance 230 not only can improve tilt angle, also helps to reduce surface free energy, allows liquid crystal molecule go to bending status from spreading condition apace.
Carry out with the same way as shown in the embodiment 1, but change the doping of the polymerisable monomer shown in the table 19 into 2.5%, and irradiating ultraviolet light is with this polymerisable monomer of polymerization under the voltage of 2.5V, its test result is as shown in table 4.
Table 4
With reference to Figure 10, this figure is the visual angle figure of the described P-OCB liquid crystal indicator of one embodiment of the present invention, by among the figure as can be known, maximum CR (contrast) value of P-OCB liquid crystal indicator of the present invention can reach 810, and the contrast of full visual angle is also all almost greater than 10.
Liquid crystal disply device and its preparation method of the present invention, its utilization comprises the liquid-crystal composition of optical compensation birefringence type LCD alignment adjuvant, on both alignment layers, form polymkeric substance with liquid crystal arrangement memory effect, be converted to bending status required time and electric power from spreading condition significantly to reduce the optical compensation birefringence type liquid crystal indicator when the initial driving, can eliminate spreading condition to the wild effect between the bending status, obtain to respond effect faster than traditional liquid crystal indicator.In addition, can learn by comparison sheet 3 and table 4, liquid crystal indicator of the present invention, more general OCB liquid crystal indicator has reaction velocity faster really, therefore also has preferable competitiveness.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; any those skilled in the art; do not breaking away under the spirit and scope of the invention; can carry out some and change and retouching, so protection scope of the present invention is worked as with being as the criterion that appending claims was limited.
Claims (33)
1. optical compensation birefringence type LCD alignment adjuvant comprises the polymerisable monomer suc as formula structure shown in (II):
Formula (II)
Wherein each R is identical or different, is H or CH
3, n is 1～5 integer, m and l are 1～11 integer, and this polymerisable monomer with formula (II) structure does not have dipole moment or its dipole moment is not more than 0.1.
2. optical compensation birefringence type LCD alignment adjuvant as claimed in claim 1, the polymerisable monomer of structure is shown in its Chinese style (II):
4. optical compensation birefringence type LCD alignment adjuvant as claimed in claim 1, the polymerisable monomer of structure is shown in its Chinese style (II):
6. the manufacture method of an optical compensation birefringence type liquid crystal indicator comprises:
The preparation liquid-crystal composition, this liquid-crystal composition comprises liquid-crystal compounds and optical compensation birefringence type LCD alignment adjuvant, and wherein optical compensation birefringence type LCD alignment adjuvant comprises the polymerisable monomer suc as formula structure shown in (II):
Formula (II)
Wherein each R is identical or different, is H or CH
3, n is 1～5 integer, m and l are 1～11 integer, and this polymerisable monomer with formula (II) structure does not have dipole moment or its dipole moment is not more than 0.1;
First substrate and second substrate are provided, and wherein first substrate and second substrate be arranged in parallel, and the first surface of first substrate is relative with the second surface of second substrate;
On first surface and second surface, form both alignment layers;
Liquid-crystal composition is injected between first substrate and second substrate;
Provide first voltage so that liquid-crystal compounds is converted to bending status from spreading condition;
When treating liquid-crystal compounds, provide second voltage, so that this liquid-crystal compounds maintains spreading condition or bending status to liquid-crystal compounds to stable state; And
Keep second voltage, and apply energy, make it have the liquid crystal arrangement memory effect with the described polymerisable monomer of polymerization with formula (II) structure.
7. the manufacture method of optical compensation birefringence type liquid crystal indicator as claimed in claim 6, the percentage by weight that wherein has the polymerisable monomer of structure shown in the formula (II) is between 0.01 to 30, and above-mentioned percentage by weight is a benchmark with the weight of liquid-crystal composition.
8. the manufacture method of optical compensation birefringence type liquid crystal indicator as claimed in claim 6, wherein liquid-crystal compounds is the optical compensation birefringence type liquid-crystal compounds.
9. the manufacture method of optical compensation birefringence type liquid crystal indicator as claimed in claim 6, wherein both alignment layers comprises polyimide.
10. the manufacture method of optical compensation birefringence type liquid crystal indicator as claimed in claim 6 after forming both alignment layers, also comprises this both alignment layers is imposed friction treatment.
11. the manufacture method of optical compensation birefringence type liquid crystal indicator as claimed in claim 6, the mode that wherein liquid-crystal composition is injected between first substrate and second substrate is formula injection method or the vacuum capillarity injection method of dripping.
12. the manufacture method of optical compensation birefringence type liquid crystal indicator as claimed in claim 6, wherein first voltage makes between second electrode of first electrode of the substrate of winning and second substrate and produces potential difference (PD), and first electrode, second electrode and liquid-crystal compounds constitute capacitance component.
13. the manufacture method of optical compensation birefringence type liquid crystal indicator as claimed in claim 6, wherein first voltage is between between 1～40 volt scope.
14. the manufacture method of optical compensation birefringence type liquid crystal indicator as claimed in claim 6, wherein second voltage is between between 0～10 volt scope.
15. the manufacture method of optical compensation birefringence type liquid crystal indicator as claimed in claim 6 wherein will have the polymerisable monomer irradiating ultraviolet light of formula (II) structure and carry out polyreaction.
16. the manufacture method of optical compensation birefringence type liquid crystal indicator as claimed in claim 6,, also comprise with thermal treatment remaining polymerisable monomer with formula (II) structure is reacted completely behind the described polymerisable monomer with formula (II) structure with polymerization applying energy.
17. the manufacture method of optical compensation birefringence type liquid crystal indicator as claimed in claim 16, wherein heat treated temperature is in 50～250 ℃ scope.
18. the manufacture method of optical compensation birefringence type liquid crystal indicator as claimed in claim 6, behind the described polymerisable monomer with formula (II) structure, also comprise that the mode with the irradiation visible light reacts completely remaining polymerisable monomer with formula (II) structure with polymerization applying energy.
19. the manufacture method of optical compensation birefringence type liquid crystal indicator as claimed in claim 6, in the step that applies the described polymerisable monomer with formula (II) structure of energy converging, formed polymkeric substance is formed on the surface of both alignment layers, makes this both alignment layers have the tilt angle of spending between 1～25.
20. the manufacture method of optical compensation birefringence type liquid crystal indicator as claimed in claim 6, wherein liquid-crystal compounds constitutes liquid crystal layer, and the polymkeric substance that is formed by the polymerisable monomer with formula (II) structure is formed on the both alignment layers of liquid crystal layer both sides.
21. the manufacture method of optical compensation birefringence type liquid crystal indicator as claimed in claim 6, the polymkeric substance that wherein is formed on first surface and the second surface is apart by liquid crystal layer.
22. an optical compensation birefringence type liquid crystal indicator comprises:
First substrate with first surface;
Second substrate with second surface, wherein second substrate and first substrate be arranged in parallel, and first surface is relative with second surface;
Be respectively formed at the both alignment layers on first surface and the second surface;
Be formed on the polymkeric substance on the both alignment layers with liquid crystal arrangement memory effect;
Be configured in the liquid crystal layer between first substrate and second substrate, wherein, have the polymkeric substance of liquid crystal arrangement memory effect and the formation method of liquid crystal layer and may further comprise the steps:
The preparation liquid-crystal composition, this liquid-crystal composition comprises liquid-crystal compounds and optical compensation birefringence type LCD alignment adjuvant, and wherein optical compensation birefringence type LCD alignment adjuvant comprises the polymerisable monomer suc as formula structure shown in (II):
Formula (II)
Wherein each R is identical or different, is H or CH
3, n is 1～5 integer, m and l are 1～11 integer, and this polymerisable monomer with formula (II) structure does not have dipole moment or its dipole moment is not more than 0.1;
Liquid-crystal composition is injected between first substrate and second substrate;
Provide first voltage so that the liquid-crystal compounds of liquid crystal layer is converted to bending status from spreading condition;
When treating liquid-crystal compounds, provide second voltage, so that this liquid-crystal compounds maintains spreading condition or bending status to this liquid-crystal compounds to stable state; And
Keep second voltage, and this has the polymerisable monomer of formula (II) structure with polymerization to apply energy, form polymkeric substance with liquid crystal arrangement memory effect.
23. optical compensation birefringence type liquid crystal indicator as claimed in claim 22, the percentage by weight that wherein has the polymerisable monomer of structure shown in the formula (II) are between 0.01 to 30, above-mentioned percentage by weight is a benchmark with the weight of liquid-crystal composition.
24. optical compensation birefringence type liquid crystal indicator as claimed in claim 22, wherein liquid-crystal compounds is the optical compensation birefringence type liquid-crystal compounds.
25. optical compensation birefringence type liquid crystal indicator as claimed in claim 22, wherein both alignment layers comprises polyimide.
26. optical compensation birefringence type liquid crystal indicator as claimed in claim 22 wherein imposes friction treatment to both alignment layers.
27. optical compensation birefringence type liquid crystal indicator as claimed in claim 22, the mode that wherein liquid-crystal composition is injected between first substrate and second substrate is the formula injection method that drips.
28. optical compensation birefringence type liquid crystal indicator as claimed in claim 22, wherein first voltage makes between second electrode of first electrode of the substrate of winning and second substrate and produces potential difference (PD), and first electrode, second electrode and liquid-crystal compounds constitute capacitance component.
29. optical compensation birefringence type liquid crystal indicator as claimed in claim 22, wherein first voltage is between between 1～40 volt scope.
30. optical compensation birefringence type liquid crystal indicator as claimed in claim 22, wherein second voltage is between between 0～10 volt scope.
31. optical compensation birefringence type liquid crystal indicator as claimed in claim 22 wherein will have the polymerisable monomer irradiating ultraviolet light of formula (II) structure and carry out polyreaction.
32. optical compensation birefringence type liquid crystal indicator as claimed in claim 22, the both alignment layers that wherein is formed with polymkeric substance thereon has the tilt angle of spending between 1～25.
33. optical compensation birefringence type liquid crystal indicator as claimed in claim 22 wherein is formed on polymkeric substance on first surface and the second surface by liquid crystal layer and apart.
34. optical compensation birefringence type liquid crystal indicator as claimed in claim 34, wherein this liquid crystal indicator is COA (Array wave filter) formula, the saturating formula of Transflective, TN (twisted-nematic) type, MVA (multizone homeotropic alignment) type or PMVA type liquid crystal indicator.
35. the application of optical compensation birefringence type LCD alignment adjuvant in the optical compensation birefringence type liquid crystal indicator of claim 1.
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| CNB2005100591318A CN100392501C (en) | 2005-03-24 | 2005-03-24 | Liquid crystal turning additive, liquid crystal display device containing it and manufacturing method |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101157479B1 (en) * | 2005-11-18 | 2012-06-20 | 엘지디스플레이 주식회사 | Optically compensated birefrin gence mode liquid crystal display device and method for fabricating of the same |
| CN100367102C (en) * | 2006-02-13 | 2008-02-06 | 友达光电股份有限公司 | Optical compensation birefringence type liquid crystal display panel |
| CN101008784B (en) * | 2007-02-06 | 2011-01-12 | 友达光电股份有限公司 | Photosensitive monomer, liquid crystal material, liquid crystal panel and manufacture method, and photoelectric equipment and manufacture method thereof |
| CN103073425A (en) * | 2007-02-06 | 2013-05-01 | 友达光电股份有限公司 | Photosensitive monomer, liquid crystal material, liquid crystal panel, fabrication method of liquid crystal panel, photoelectronic device and fabrication method |
| CN102169255A (en) * | 2011-05-10 | 2011-08-31 | 深圳市华星光电技术有限公司 | OCB (Optically Compensated Birefringence) liquid crystal display panel and manufacturing method thereof as well as OCB liquid crystal display |
| CN102566129B (en) * | 2012-02-29 | 2015-07-22 | 深圳市华星光电技术有限公司 | Optical self-compensating bending type liquid crystal display panel and manufacturing method thereof |
| CN102660300B (en) * | 2012-04-28 | 2014-02-12 | 深圳市华星光电技术有限公司 | Liquid crystal medium composite as well as liquid crystal display using same and manufacturing method of liquid crystal medium composite |
| TWI518659B (en) * | 2014-05-07 | 2016-01-21 | 友達光電股份有限公司 | Method for manufacturing liquid crystal display panel |
| CN105700237A (en) * | 2016-04-13 | 2016-06-22 | 深圳市华星光电技术有限公司 | Quick-response liquid crystal display device and manufacturing method thereof |
| CN108845441A (en) * | 2018-06-22 | 2018-11-20 | 惠科股份有限公司 | Display panel and its manufacturing method |
| CN108897173A (en) * | 2018-08-14 | 2018-11-27 | 深圳市华星光电技术有限公司 | The production method and liquid crystal display panel of liquid crystal display panel |
| CN112909454A (en) * | 2019-11-19 | 2021-06-04 | 北京道古视界科技有限公司 | Method for modulating microwave and millimeter wave by liquid crystal and reconfigurable array antenna thereof |
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| CN1462898A (en) * | 2002-05-31 | 2003-12-24 | 富士通显示技术株式会社 | LCD and its mfg. method |
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| US5814378A (en) * | 1995-07-11 | 1998-09-29 | Sharp Kabushiki Kaisha | Polymerizable compound and a liquid crystal display device using the same |
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