WO2012043387A1 - 新規液晶表示装置及び有用な液晶組成物 - Google Patents
新規液晶表示装置及び有用な液晶組成物 Download PDFInfo
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- WO2012043387A1 WO2012043387A1 PCT/JP2011/071643 JP2011071643W WO2012043387A1 WO 2012043387 A1 WO2012043387 A1 WO 2012043387A1 JP 2011071643 W JP2011071643 W JP 2011071643W WO 2012043387 A1 WO2012043387 A1 WO 2012043387A1
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Definitions
- the present invention relates to a liquid crystal display device using a nematic crystal composition having a positive dielectric anisotropy ( ⁇ > 0).
- active matrix driving devices include OCB (Optically Compensated Bend), VA (Vertical Alignment), IPS (In-plane Alignment), etc. It is applied to LCD TVs, projectors, computers, etc.
- OCB Optically Compensated Bend
- VA Very Alignment
- IPS In-plane Alignment
- a non-linear circuit is provided for each pixel, and a proposal using a TFT (thin film transistor) using amorphous silicon or polysilicon or an organic semiconductor material has been made.
- proposals have been made using a photo-alignment technique as an alignment method for liquid crystal molecules in response to an increase in display size and definition.
- proposals have been made using a retardation film and a photopolymerizable monomer to obtain a bright display (Non-Patent Documents 1 to 8).
- the response speed and viewing angle characteristics are still not sufficient.
- the IPS system is excellent in viewing angle characteristics, it is not sufficient in terms of response speed, and the VA system is relatively high in response speed, but is not sufficient in terms of viewing angle characteristics. Therefore, in order to improve the apparent response speed of the display element, the frame frequency has been increased from 60 Hz to 120 Hz, 240 Hz, etc. in addition to the overdrive method.
- the improvement in the electronic circuit of these liquid crystal display devices alone has a limit in exceeding the limit of the response speed inherent to the liquid crystal material, and the drastic response speed is improved by improving the entire display device including the liquid crystal material. There is a need for improvement.
- MVA multi-domain vertical arrangement method
- VAIPS is hereinafter referred to as “VAIPS”. Abbreviated.
- the physical behavior of liquid crystal molecules is different from that of a conventional liquid crystal display device driving method, and therefore, in selecting a liquid crystal material, it is required to select a liquid crystal material based on a different standard. ing.
- the threshold voltage (Vc) for Fredericks transition in the TN system is
- the VA method is expressed by the following equation.
- Vc is the Frederick transition (V)
- ⁇ is the circumference
- d cell is the distance between the first substrate and the second substrate ( ⁇ m)
- d gap is the distance between the pixel electrode and the common electrode ( ⁇ m)
- d ITO is the pixel electrode and / or common electrode width ( ⁇ m)
- ⁇ r1>, ⁇ r2>, and ⁇ r3> are extrapolated lengths ( ⁇ m)
- K11 is the spray elastic constant (N)
- K22 is the twist elasticity.
- Constant (N) represents the elastic constant (N) of the bend
- ⁇ represents the anisotropy of the dielectric constant.
- these general calculation formulas do not apply, and there is no standard for selecting a liquid crystal material. Therefore, the performance does not improve, and as a result, application as a liquid crystal display device is delayed.
- a compound preferable as a liquid crystal material to be used in the VAIPS mode is also disclosed (Patent Document 8).
- the liquid crystal composition described in the cited document uses a cyano compound, it is not suitable for an active matrix.
- the liquid crystal display device also has a problem of aiming at mega contrast (CR) by setting a higher black level with bright luminance. Proposals have been made to improve the aperture ratio so that the pixel display area of the LCD can be increased, to apply a brightness enhancement film such as DBEF or CLC, or to reduce light leakage due to protrusions when the liquid crystal is vertically aligned. ing. Furthermore, a display that is not easily disturbed by the pressing force in the touch panel system is also required.
- JP-A-57-000618 Japanese Patent Laid-Open No. 50-093665 Japanese Patent Laid-Open No. 10-153782 JP-A-10-186351 JP-A-10-333171 Japanese Patent Laid-Open No. 11-024068 JP 2008-020521A JP 2002-012867 A
- the present invention provides a VAIPS liquid crystal display device using a positive dielectric anisotropy liquid crystal material having a high response speed and excellent viewing angle characteristics without a special cell structure such as pixel division. (Hereinafter referred to as p-VAIPS).
- the present invention makes it possible to improve the contrast ratio by making the response speed, which was a problem in the prior art, better display, making the viewing angle wider, making the brightness high when transmitting light, and the high black level when blocking light. Thus, a liquid crystal display device can be obtained.
- the present inventors have found that the above problems can be solved by combining a VAIPS liquid crystal display element having a specific structure and a liquid crystal composition containing a specific liquid crystal compound.
- the invention has been completed.
- the present invention is a liquid crystal display device comprising a first substrate, a second substrate, and a liquid crystal composition layer having a positive dielectric anisotropy sandwiched between the first substrate and the second substrate.
- the liquid crystal display device includes a plurality of pixels, and each of the pixels is independently controllable, and the pixel includes a pair of pixel electrodes and a common electrode, and both the electrodes are Provided on at least one of the first and second substrates, the major axis of the liquid crystal molecules of the liquid crystal composition layer is aligned substantially perpendicular to the substrate surface, or is hybrid aligned,
- the liquid crystal composition has the general formula (LC1) to the general formula (LC5).
- R 1 represents an alkyl group having 1 to 15 carbon atoms, and one or more CH 2 groups in the alkyl group are —O—, —CH ⁇ CH—, —CO—, —OCO—, —COO—, —C ⁇ C—, —CF 2 O—, —OCF 2 —, which may be substituted with one or more of the alkyl groups
- the H atom may be optionally halogen-substituted
- a 1 , A 2 and A 3 are each independently any one of the following structures
- X 1 and X 2 each independently represent H, Cl, F, CF 3 or OCF 3
- one or more CH 2 groups in said A 1 and A 2 May be substituted with —CH ⁇ CH—, —CF 2 O— or —OCF 2 —
- one or more CH groups in said A 1 and A 2 are substituted with N atoms
- One or more H atoms in A 1 and A 2 may be substituted with Cl, F, CF 3 or OCF 3
- X 1 to X 5 are each independently H, Cl represents F, CF 3 or OCF 3
- Y represents Cl, F, CF 3 or OCF 3
- Z 1 to Z 4 each independently represent a single bond, —CH ⁇ CH—, —C ⁇ C— , —CH 2 CH 2 —, — (CH 2 ) 4 —, —OCH 2 —, —CH 2 O—, —OCF 2 — or —CF 2 O—.
- Z 1 and Z 2 present is not a single bond
- Z 5 represents a CH 2 group or an O atom
- m 1 and m 2 each independently represents an integer of 0 to 3
- m 1 + m 2 represents 1, 2 or 3
- m 3 each independently represents an integer of 0-2.
- a liquid crystal display device is provided.
- the major axis of the liquid crystal molecules in the substrate is aligned substantially perpendicular to the substrate surface or is hybrid aligned.
- the hybrid alignment means that the major axis of the liquid crystal molecules sandwiched between two substrates is aligned substantially parallel to the substrate surface on one substrate side and aligned substantially perpendicularly on the other substrate side.
- p-VAIPS a mode in which the major axes of liquid crystal molecules are aligned substantially vertically
- p-HBIPS a mode in which hybrid alignment is performed.
- the p-VAIPS and p-HBIPS type electrode structures can be applied to those of the horizontal electric field type such as conventional IPS, FFS, and improved FFS.
- the behavior of the liquid crystal molecules in the present invention is schematically as shown in FIGS. 1 to 3, and a transition is made from a state in which no voltage is applied to FIG. 2 or 3 in which a voltage is applied.
- a high-speed response can be achieved by adopting a bend alignment state advantageous for the flow effect.
- the response speed is 20 to 40 msec for IPS and 10 to 30 msec for TN, but the response speed of the present invention is 1 to 8 msec, which is a significant improvement.
- the conventional TN driving method requires the use of a special optical film or the like to widen the viewing angle, and the left and right or top and bottom wide viewing angles remain.
- the VA driving method generally has a wide viewing angle, but it is necessary to define the direction in which the liquid crystal molecules are tilted by using zone rubbing, protrusions, slit electrodes, etc. to achieve multi-domain, and the cell configuration is It tends to be complicated. Since the p-VAIPS and p-HBIPS systems of the present invention use the lines of electric force generated by the applied voltage to define the direction in which the liquid crystal molecules fall, it is possible to make a multi-domain only by the shape of the pixel electrode. A relatively simple cell configuration is sufficient, and a wide viewing angle and high contrast are possible.
- Equation 4 As the cell configuration, by reducing d gap as much as possible and d ITO as large as possible, the driving voltage can be reduced, and the liquid crystal composition to be used is selected to have a large absolute value of ⁇ and a small K33. By doing so, it was found that the drive voltage can be reduced. Based on these findings, a negative dielectric anisotropic liquid crystal suitable for the liquid crystal display device has been found.
- the liquid crystal display device of the present invention is characterized in that the liquid crystal molecules that are likely to start moving are not centered between the two substrates, but are biased to one substrate surface and begin to move from a portion closer to one substrate. This is different from the conventional TN, IPS, VA, and OCB methods.
- the present invention improves response characteristics such as response speed, transmitted light quantity, light leakage due to external pressure such as use of touch panel, viewing angle, contrast ratio, etc., faster response speed, more than liquid crystal display devices created by the prior art
- response characteristics such as response speed, transmitted light quantity, light leakage due to external pressure
- the amount of transmitted light, light leakage due to external pressure was reduced, a wider viewing angle, and a greater contrast ratio.
- Liquid crystal molecule alignment state when no voltage is applied (example of p-VAIPS) Liquid crystal molecule reorientation state when voltage is applied (example of p-VAIPS) Liquid crystal molecule reorientation state when a voltage is applied when a common electrode is arranged under the pixel electrode through an insulating layer (FFS) (example of p-VAIPS)
- FFS insulating layer
- Test cell electrode configuration Liquid crystal molecular alignment state when no voltage is applied (Example 1 of p-HBIPS) Liquid crystal molecule reorientation state when voltage is applied (Example 1 of p-HBIPS) Liquid crystal molecular alignment state when no voltage is applied (example 2 of p-HBIPS) Liquid crystal molecule realignment state when voltage is applied (example 2 of p-HBIPS)
- the liquid crystal composition in the present invention contains the liquid crystal compounds represented by the above general formulas (LC1) to (LC5), in which R 1 is an alkyl group having 1 to 8 carbon atoms, An alkenyl group having 2 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms is preferable, A 1 and A 2 are each independently 1,4-cyclohexylene group, 1,4-phenylene group, 3-fluoro-1,4-phenylene group or 3,5-difluoro-1,4-phenylene group.
- R 1 is an alkyl group having 1 to 8 carbon atoms
- An alkenyl group having 2 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms is preferable
- a 1 and A 2 are each independently 1,4-cyclohexylene group, 1,4-phenylene group, 3-fluoro-1,4-phenylene group or 3,5-difluoro-1,4-phenylene group.
- X 1 to X 5 are each independently preferably H or F
- Y is preferably F
- Z 1 to Z 4 are each independently preferably a single bond, —C ⁇ C—, —CH 2 CH 2 —, —OCH 2 —, —CH 2 O—, —OCF 2 — or —CF 2 O—, one of Z 1 ⁇ Z 4 is present -C ⁇ C -, - CH 2 CH 2 -, - OCH 2 -, - CH 2 O -, - OCF 2 - or -CF 2 is O-, Z 1 ⁇
- these substituents are preferably single bonds
- m 1 and m 2 each independently preferably represents an integer of 0 to 2
- m 1 + m 2 is preferably 1 or 2.
- the liquid crystal compounds represented by the general formulas (LC1) to (LC5) are more preferably the general formula (LC1) represented by the general formula (LC1) -1
- Y is Cl, F, CF 3 or represents OCF 3
- X 1, X 2 , L 1 and L 2 are H, Cl, F, represents the CF 3 or OCF 3.
- the general formula (LC2) is changed from the following general formula (LC2) -1 to general formula (LC2) -10.
- R 1 , Y and X 2 represent the same meaning as in the general formula (LC2), and L 1 , L 2 , L 3 and L 4 represent H, Cl, F, CF 3 or OCF 3 .
- / or a compound represented by The general formula (LC3) is changed from the following general formula (LC3) -1 to general formula (LC3) -34.
- R 1 represents an alkyl group having 1 to 15 carbon atoms, and one or more CH 2 groups in the alkyl group are —O—, —CH ⁇ CH—, —CO—, —OCO—, —COO—, —C ⁇ C—, —CF 2 O— or —OCF 2 — may be substituted, one or two of the alkyl groups
- the above H atoms may be optionally halogen-substituted
- X 2 and X 4 each independently represent H, Cl, F, CF 3 or OCF 3
- Z 1 is a single bond, —CH ⁇ CH— , —C ⁇ C—, —CH 2 CH 2 —, — (CH 2 ) 4 —, —OCH 2 —, —CH 2 O—, —OCF 2 — or —CF 2 O—
- m 1 is 0 Represents an integer of ⁇ 3) and / or
- the general formula (LC4) is from the following general formula (LC
- R 1 , X 1 , X 2 , X 4 , X 5 and Y represent the same meaning as in general formula (LC4) or general formula (LC5)).
- R 1 is preferably alkenyl and / or R 2 is preferably an alkoxy group or alkenyloxy group.
- R 1 and R At least one of 2 is preferably alkenyl, and a compound in which at least one of Z 1 and Z 2 in the general formula (LC3) is —OCH 2 — or —CH 2 O— is preferable.
- liquid crystal composition layer has a general formula (LC6)
- R 1 , R 2 , Z 3 , Z 4 , and m 1 each independently have the same meaning as described in formulas (LC1) to (LC5), and B 1 to B 3 are each Independently
- the compound contains a compound represented by any of the following:
- R 1 , R 2 Z 3 and Z 4 represent the same meaning as in formula (LC6)), and more preferably a compound represented by formula (LC6).
- R 1 and / or R 2 are preferably alkenyl or alkenyloxy groups, and one of Z 1 and Z 2 is —CH ⁇ CH—, —C ⁇ C—, —CH 2 CH 2 It is preferably —, — (CH 2 ) 4 —, —OCH 2 —, —CH 2 O—, —OCF 2 — or —CF 2 O—, and the remainder is a single bond or —C ⁇ C—.
- the liquid crystal composition used in the present invention preferably contains 100 to 20% by mass, more preferably 100 to 40% by mass, and more preferably 100 to 60% by mass of the compounds represented by the general formulas (LC1) to (LC5). It is particularly preferable to contain it by mass%.
- the liquid crystal composition may contain one or more polymerizable compounds, and preferably the polymerizable compound is a benzene derivative, a triphenylene derivative, a truxene derivative, a phthalocyanine derivative or a cyclohexane derivative. It is a discotic liquid crystal compound having a structure in which a linear alkyl group, a linear alkoxy group or a substituted benzoyloxy group is radially substituted as a side chain as a nucleus.
- the polymerizable compound is represented by the general formula (PC1)
- P 1 represents a polymerizable functional group
- Sp 1 represents a spacer group having 0 to 20 carbon atoms
- Q 1 represents a single bond, —O— , —NH—, —NHCOO—, —OCONH—, —CH ⁇ CH—, —CO—, —COO—, —OCO—, —OCOO—, —OOCO—, —CH ⁇ CH—, —CH ⁇ CH— COO—, —OCO—CH ⁇ CH— or —C ⁇ C—
- each of n 1 and n 2 independently represents 1, 2 or 3
- MG represents a mesogenic group or a mesogenic support group
- R 3 represents a halogen atom, a cyano group, or an alkyl group having 1 to 25 carbon atoms, and one or two or more CH 2 groups in the alkyl group are —O -, -S-, -NH-, -N (CH 3 )-, -CO-, -
- MG in the polymerizable compound general formula (PC1) has the following structure:
- C 1 to C 3 are each independently 1,4-phenylene group, 1,4-cyclohexylene group, 1,4-cyclohexenyl group, tetrahydropyran-2, , 5-diyl group, 1,3-dioxane-2,5-diyl group, tetrahydrothiopyran-2,5-diyl group, 1,4-bicyclo (2,2,2) octylene group, decahydronaphthalene-2 , 6-diyl group, pyridine-2,5-diyl group, pyrimidine-2,5-diyl group, pyrazine-2,5-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group 2,6-naphthylene group, phenanthrene-2,7-diyl group, 9,10-dihydrophenanthrene-2,7-diyl group, 1,2,3,4,4a
- Sp 1 and Sp 2 each independently represent an alkylene group, which may be substituted by one or more halogen atoms or CN, and one or more CH 2 present in this group.
- the groups are —O—, —S—, —NH—, —N (CH 3 ) —, —CO—, —COO—, —OCO—, —OCOO—, —SCO—, so that the O atom is not directly adjacent. May be replaced by -COS- or -C ⁇ C- P 1 and P 2 are each independently represented by the following general formulas (PC1-a) to (PC1-d)
- R 41 to R 43 , R 51 to R 53 , and R 61 to R 63 each independently represent a hydrogen atom, a halogen atom, or an alkyl group having 1 to 5 carbon atoms).
- polymerizable compound general formula (PC1) is represented by the general formula (PC1) -1 or the general formula (PC1) -2.
- the general formula (PC1) is from the general formula (PC1) -3 to the general formula (PC1) -8.
- W 1 is independently F, CF 3 , OCF 3 , CH 3 , OCH 3 , an alkyl group having 2 to 5 carbon atoms, or an alkoxy group
- An alkenyl group, COOW 2 , OCOW 2 or OCOW 2 (wherein W 2 represents a linear or branched alkyl group having 1 to 10 carbon atoms or an alkenyl group having 2 to 5 carbon atoms), n 6 represents 0, 1, 2, 3 or 4.)
- Sp 1 , Sp 2 , Q 1 and Q 2 in the polymerizable compound general formula (PC1) are all single bonds, and in n 3 and n 4 , n 3 + n 4 is 3 to 6, and P 1 and P 2 are the formula (7-b), W 1 is F, CF 3 , OCF 3 , CH 3 or OCH 3 , and n 6 is 1 or more.
- MG in the general formula (PC1) is a discotic liquid crystal compound represented by the general formula (PC1) -9.
- each R 7 independently represents P 1 -Sp 1 -Q 1 or a substituent of the general formula (PC1-e)
- P 1 , Sp 1 and Q 1 represent the general formula (PC1)
- R 81 and R 82 each independently represents a hydrogen atom, a halogen atom or a methyl group
- R 83 represents an alkoxy group having 1 to 20 carbon atoms, and at least one hydrogen atom in the alkoxy group Substituted with substituents represented by the general formulas (PC1-a) to (PC1-d)).
- the amount of the polymerizable compound used is preferably 0.1 to 2.0% by mass.
- the liquid crystal composition can be used alone for the previous application, can further contain one or more antioxidants, and can further contain one or more UV absorbers.
- the product ( ⁇ n ⁇ d) of the refractive index anisotropy ( ⁇ n) of the liquid crystal composition and the distance (d) between the first substrate and the second substrate of the display device is 0.20 to 0 in the case of vertical alignment. .59 is preferable, 0.21 to 0.61 is preferable for the hybrid alignment, 0.33 to 0.40 is particularly preferable for the vertical alignment, and 0.34 to 0.44 is particularly preferable for the hybrid alignment. preferable.
- An alignment film made of polyimide (PI), chalcone, cinnamate, or the like can be provided on the first substrate of the display device and the surface in contact with the liquid crystal composition on the second substrate in order to align the liquid crystal composition.
- the alignment film may be formed using a photo-alignment technique.
- the tilt angle between the substrate and the liquid crystal composition is preferably 85 to 90 °.
- the tilt angle between the first substrate or the second substrate and the liquid crystal composition is 85 to 90 °.
- the tilt angle between the remaining substrate and the liquid crystal composition is preferably 3 to 20 °.
- T NI Nematic phase-isotropic liquid phase transition temperature (° C), liquid crystal phase upper limit temperature
- ⁇ Dielectric anisotropy
- ⁇ n Refractive index anisotropy
- Vsat applied voltage transmittance upon application of a rectangular wave of a frequency 1KHz changes 90% ⁇ r + d / msec:
- Response speed when using the cell The following abbreviations are used in the compound description.
- Example 1 The electrode structure shown in FIG. 4 is formed on the second substrate, the first substrate not provided with the electrode structure is used, the vertical alignment films are formed on the opposing sides, and the first substrate and the second substrate are formed.
- Example 1 A conventional TN liquid crystal display device was prepared using the liquid crystal composition used in Example 1, and the physical properties thereof were measured. The results are shown in Table 2.
- the liquid crystal display device of the present invention Compared with the liquid crystal display device of Comparative Example 1 in which the same positive dielectric anisotropic liquid crystal is sandwiched, the liquid crystal display device of the present invention has a faster response speed, a larger amount of transmitted light, a reduction in light leakage due to external pressure, A wider viewing angle and a greater contrast ratio were achieved.
- Example 2 The electrode structure shown in FIG. 4 is formed on a second substrate, a first substrate without an electrode structure is used, a vertical alignment film is formed on one of the opposing sides, and a horizontal alignment film is formed on the other. An alignment film was formed, and a liquid crystal composition having positive dielectric anisotropy shown in Table 1 was sandwiched between the first substrate and the second substrate to produce a liquid crystal display device of Example 2.
- the liquid crystal display device has a faster response speed, a larger amount of transmitted light, a reduction in light leakage due to external pressure, and a wider range than the conventional ECB liquid crystal display device sandwiching the same positive dielectric anisotropic liquid crystal Realized a larger viewing angle and contrast ratio.
- Example 3 The electrode structure shown in FIG. 4 is formed on the second substrate, the first substrate not provided with the electrode structure is used, the vertical alignment films are formed on the opposing sides, and the first substrate and the second substrate are formed.
- Each of the liquid crystal compositions having positive dielectric anisotropy shown in Table 1 between the substrates was 2-methyl-acrylic acid 4 ′- ⁇ 2- [4- (2-acryloyloxy-ethyl) -phenoxycarbonyl] -ethyl ⁇ .
- a liquid crystal display device of Example 3 was prepared by sandwiching a composition to which 0.3% by mass of biphenyl-4-yl ester was added.
- the liquid crystal display device Compared with the conventional TN liquid crystal display device sandwiching the same positive dielectric anisotropic liquid crystal, the liquid crystal display device has a faster response speed, a larger amount of transmitted light, reduced light leakage due to external pressure, and a wider field of view. A corner, a larger contrast ratio was realized.
- Example 4 The electrode structure shown in FIG. 4 is formed on a second substrate, a first substrate without an electrode structure is used, a vertical alignment film is formed on one of the opposing sides, and a horizontal alignment film is formed on the other. An alignment film is formed, and a liquid crystal composition having positive dielectric anisotropy shown in Table 1 is formed between the first substrate and the second substrate.
- a liquid crystal display device of Example 4 was produced by sandwiching a composition to which 0.3 mass% of (2-acryloyloxy-ethyl) -phenoxycarbonyl] -ethyl ⁇ -biphenyl-4-yl ester was added.
- the liquid crystal display device has a faster response speed, a larger amount of transmitted light, a reduction in light leakage due to external pressure, and a wider range than the conventional ECB liquid crystal display device sandwiching the same positive dielectric anisotropic liquid crystal Realized a larger viewing angle and contrast ratio.
- Comparative Example 2 As in Example 1, the liquid crystal display device of Comparative Example 2 was prepared by sandwiching the positive dielectric anisotropic liquid crystal shown in Table 2, and the physical properties thereof were measured. The results are shown in Table 2.
- the liquid crystal display device of Comparative Example 2 sandwiching the positive dielectric anisotropic liquid crystal has a slower response speed, a slightly lower transmitted light amount, and particularly poor retention and long-term reliability. .
- Example 5 The liquid crystal display device of Example 5 is sandwiched between the positive dielectric anisotropic liquid crystals shown in Table 3 as in Example 1, and the liquid crystal display device of Example 6 and Example 1 are the same as in Example 1.
- a liquid crystal display device of Example 7 was prepared.
- the liquid crystal display device has a faster response speed, a larger amount of transmitted light, and a reduction in light leakage due to external pressure, as compared with the conventional TN liquid crystal display device sandwiching the same positive dielectric anisotropic liquid crystal. A wider viewing angle and a greater contrast ratio were achieved.
- Example 8 The liquid crystal display device of Example 8 is sandwiched between the positive dielectric anisotropic liquid crystals shown in Table 4 as in Example 1, and the liquid crystal display device of Example 9 and Example 1 are the same as in Example 1.
- a liquid crystal display device of Example 10 was prepared.
- the liquid crystal display device has a faster response speed, a larger amount of transmitted light, a reduction in light leakage due to external pressure, as compared with the conventional TN liquid crystal display device sandwiching the same positive dielectric anisotropic liquid crystal, A wider viewing angle and a greater contrast ratio were achieved.
- Example 11 The liquid crystal display device of Example 11 is sandwiched between the positive dielectric anisotropic liquid crystals shown in Table 5 as in Example 1, and the liquid crystal display device of Example 12 and Example 1 are the same as in Example 1.
- a liquid crystal display device of Example 13 was prepared.
- the liquid crystal display devices of Examples 11 to 13 have a faster response speed, a larger amount of transmitted light, and a reduction in light leakage due to external pressure, as compared with the conventional TN liquid crystal display device sandwiching the same positive dielectric anisotropic liquid crystal. A wider range of viewing angles and a greater contrast ratio.
- Example 14 The liquid crystal display device of Example 14 is sandwiched between the positive dielectric anisotropic liquid crystals shown in Table 6 as in Example 1, and the liquid crystal display device of Example 15 is the same as in Example 1, as in Example 1.
- a liquid crystal display device of Example 17 was prepared by sandwiching the liquid crystal display device of Example 16 and the positive dielectric anisotropic liquid crystal shown in Table 7 in the same manner as in Example 1.
- the liquid crystal display device Compared with the conventional TN liquid crystal display device sandwiching the same positive dielectric anisotropic liquid crystal, the liquid crystal display device has a faster response speed, a larger amount of transmitted light, reduced light leakage due to external pressure, and a wider field of view. A corner, a larger contrast ratio was realized.
- the liquid crystal display device of Example 19 was prepared in the same manner as in Example 1, the liquid crystal display device of Example 20 as in Example 1, and the liquid crystal display device in Example 21 as in Example 1.
- the liquid crystal display device Compared with the conventional TN liquid crystal display device sandwiching the same positive dielectric anisotropic liquid crystal, the liquid crystal display device has a faster response speed, a larger amount of transmitted light, reduced light leakage due to external pressure, and a wider field of view. A corner, a larger contrast ratio was realized.
- the liquid crystal display device has a faster response speed, a larger amount of transmitted light, a reduction in light leakage due to external pressure, A wider viewing angle and a greater contrast ratio were achieved.
- Example 24 and 25 The liquid crystal display device of Example 24 and the liquid crystal display device of Example 25 were produced in the same manner as in Example 1 by sandwiching the positive dielectric anisotropic liquid crystal shown in Table 10 as in Example 1.
- the liquid crystal display device has a faster response speed, a larger amount of transmitted light, a reduction in light leakage due to external pressure, A wider viewing angle and a greater contrast ratio were achieved.
- Example 28: ⁇ r + d 0.9 msec (Liquid crystal composition of Example 17)
- the liquid crystal display devices of Examples 26 to 28 had characteristics of extremely quick response. Further, when pressure was applied to the liquid crystal display device prepared in this example, light leakage that occurred in the conventional VA display was hardly seen.
- Example 29 to 32 The electrode structure shown in FIG. 4 is formed on the second substrate, the first substrate not provided with the electrode structure is used, the vertical alignment films are formed on the opposing sides, and the first substrate and the second substrate are formed.
- the liquid crystal panel sandwiching the positive dielectric anisotropic liquid crystal shown in Examples 29 to 32 has a higher response speed than the conventional liquid crystal panel sandwiching the positive dielectric anisotropic liquid crystal, Realized more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and larger contrast ratio.
- Comparative Example 3 In the same manner as in Example 29, the liquid crystal panel of Comparative Example 3 was prepared by sandwiching the positive dielectric anisotropic liquid crystal shown in Table 12, and the physical properties thereof were measured. The results are shown in Table 12 above.
- the liquid crystal panel of Comparative Example 3 in which the positive dielectric anisotropic liquid crystal is sandwiched has a slower response speed, a slightly lower transmitted light amount, and particularly poor retention and long-term reliability.
- Examples 33 to 35 In the same manner as in Example 29 / Comparative Example 3, a positive dielectric anisotropic liquid crystal shown in Table 13 was sandwiched between the first substrate and the second substrate to prepare a liquid crystal panel.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 33 to 35 has a higher response speed than the conventional liquid crystal panel holding the positive dielectric anisotropic liquid crystal, Realized more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and larger contrast ratio.
- Examples 36 to 38 In the same manner as in Example 29 / Comparative Example 3, a positive dielectric anisotropic liquid crystal shown in Table 14 was sandwiched between the first substrate and the second substrate to prepare a liquid crystal panel.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 36 to 38 has a faster response speed than the conventional liquid crystal panel holding the positive dielectric anisotropic liquid crystal, Realized more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and larger contrast ratio.
- Example 39 The electrode structure shown in FIG. 4 is formed on a second substrate, a first substrate without an electrode structure is used, a vertical alignment film is formed on one of the opposing sides, and a horizontal alignment film is formed on the other. An alignment film was formed, and a positive dielectric anisotropic liquid crystal shown in Examples 29 to 38 and Comparative Example 3 was sandwiched between the first substrate and the second substrate to prepare a liquid crystal panel.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 29 to 38 is faster than the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Comparative Example 3. Response speed, more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and higher contrast ratio.
- Example 40 The electrode structure shown in FIG. 4 is formed on the second substrate, the first substrate not provided with the electrode structure is used, the vertical alignment films are formed on the opposing sides, and the first substrate and the second substrate are formed. Between the substrates, the positive dielectric anisotropic liquid crystals shown in Examples 29 to 38 and Comparative Example 3 were each added with 2-methyl-acrylic acid 4 ′- ⁇ 2- [4- (2-acryloyloxy-ethyl) -phenoxycarbonyl]. ] A liquid crystal panel was prepared by sandwiching a composition to which 0.3% by mass of -ethyl ⁇ -biphenyl-4-yl ester was added.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 29 to 38 is faster than the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Comparative Example 3.
- Example 41 The electrode structure shown in FIG. 4 is formed on a second substrate, a first substrate without an electrode structure is used, a vertical alignment film is formed on one of the opposing sides, and a horizontal alignment film is formed on the other. An alignment film is formed, and each of the positive dielectric anisotropic liquid crystals shown in Examples 29 to 38 and Comparative Example 3 is formed between the first substrate and the second substrate by 2-methyl-acrylic acid 4 ′- ⁇ 2
- a liquid crystal panel was prepared by sandwiching a composition to which 0.3% by mass of-[4- (2-acryloyloxy-ethyl) -phenoxycarbonyl] -ethyl ⁇ -biphenyl-4-yl ester was added.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 29 to 38 is faster than the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Comparative Example 1. Response speed, more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and higher contrast ratio.
- Example 42 to 45 The electrode structure shown in FIG. 4 is formed on the second substrate, the first substrate not provided with the electrode structure is used, the vertical alignment films are formed on the opposing sides, and the first substrate and the second substrate are formed.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 42 to 45 has a higher response speed than the conventional liquid crystal panel holding the positive dielectric anisotropic liquid crystal, Realized more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and larger contrast ratio.
- Example 46 In the same manner as in Example 42, a positive dielectric anisotropic liquid crystal shown in Table 16 was sandwiched between the first substrate and the second substrate to prepare a liquid crystal panel.
- the liquid crystal panel sandwiching positive dielectric anisotropic liquid crystals shown in Examples 46 to 48 has a higher response speed than the conventional liquid crystal panel sandwiching positive dielectric anisotropic liquid crystals. Realized more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and larger contrast ratio.
- Example 49 In the same manner as in Example 42, a positive dielectric anisotropic liquid crystal shown in Table 17 was sandwiched between the first substrate and the second substrate to prepare a liquid crystal panel.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 49 to 51 has a higher response speed than the conventional liquid crystal panel holding the positive dielectric anisotropic liquid crystal, Realized more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and larger contrast ratio.
- Example 52 The electrode structure shown in FIG. 4 is formed on a second substrate, a first substrate without an electrode structure is used, a vertical alignment film is formed on one of the opposing sides, and a horizontal alignment film is formed on the other. An alignment film was formed, and a positive dielectric anisotropic liquid crystal shown in Examples 42 to 51 and Comparative Examples 1 to 3 was sandwiched between the first substrate and the second substrate to prepare a liquid crystal panel.
- Example 53 The electrode structure shown in FIG. 4 is formed on the second substrate, the first substrate not provided with the electrode structure is used, the vertical alignment films are formed on the opposing sides, and the first substrate and the second substrate are formed. Between the substrates, the positive dielectric anisotropic liquid crystals shown in Examples 42 to 51 and Comparative Examples 1 to 3 were each added with 2-methyl-acrylic acid 4 ′- ⁇ 2- [4- (2-acryloyloxy-ethyl)- A liquid crystal panel was prepared by sandwiching a composition to which 0.3% by mass of phenoxycarbonyl] -ethyl ⁇ -biphenyl-4-yl ester was added.
- the liquid crystal panels sandwiching positive dielectric anisotropic liquid crystals shown in Examples 42 to 51 are compared with the liquid crystal panels sandwiching positive dielectric anisotropic liquid crystals shown in Comparative Examples 1 to 3, It realized faster response speed, more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and larger contrast ratio.
- Example 54 The electrode structure shown in FIG. 4 is formed on a second substrate, a first substrate without an electrode structure is used, a vertical alignment film is formed on one of the opposing sides, and a horizontal alignment film is formed on the other. An alignment film is formed, and each of the positive dielectric anisotropic liquid crystals shown in Examples 42 to 51 and Comparative Examples 1 to 3 is 2-methyl-acrylic acid 4′-between the first substrate and the second substrate.
- a liquid crystal panel was prepared by sandwiching a composition added with 0.3 mass% of ⁇ 2- [4- (2-acryloyloxy-ethyl) -phenoxycarbonyl] -ethyl ⁇ -biphenyl-4-yl ester.
- the liquid crystal panels sandwiching positive dielectric anisotropic liquid crystals shown in Examples 42 to 51 are compared with the liquid crystal panels sandwiching positive dielectric anisotropic liquid crystals shown in Comparative Examples 1 to 3, It realized faster response speed, more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and larger contrast ratio.
- Examples 55 to 57 The electrode structure shown in FIG. 4 is formed on the second substrate, the first substrate not provided with the electrode structure is used, the vertical alignment films are formed on the opposing sides, and the first substrate and the second substrate are formed.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 55 to 57 has a higher response speed than the conventional liquid crystal panel holding the positive dielectric anisotropic liquid crystal, Realized more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and larger contrast ratio.
- Comparative Example 4 In the same manner as in Example 55, the liquid crystal panel of Comparative Example 4 was produced by sandwiching the positive dielectric anisotropic liquid crystal shown in Table 19, and the physical properties thereof were measured. The results are shown in Table 19 above.
- the liquid crystal panel of Comparative Example 4 in which the positive dielectric anisotropic liquid crystal is sandwiched has a slower response speed, a slightly lower transmitted light amount, and particularly poor retention and long-term reliability.
- Example 58 and 59 In the same manner as in Example 55 and Comparative Example 4, a liquid crystal panel was prepared by sandwiching the positive dielectric anisotropic liquid crystal shown in Table 20 between the first substrate and the second substrate.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 58 and 59 has a faster response speed than the conventional liquid crystal panel holding the positive dielectric anisotropic liquid crystal, Realized more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and larger contrast ratio.
- Example 60 The electrode structure shown in FIG. 4 is formed on a second substrate, a first substrate without an electrode structure is used, a vertical alignment film is formed on one of the opposing sides, and a horizontal alignment film is formed on the other. An alignment film was formed, and a positive dielectric anisotropic liquid crystal shown in Examples 55 to 59 and Comparative Example 4 was sandwiched between the first substrate and the second substrate to prepare a liquid crystal panel.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 55 to 59 is faster than the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Comparative Example 4. Response speed, more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and higher contrast ratio.
- Example 61 The electrode structure shown in FIG. 4 is formed on the second substrate, the first substrate not provided with the electrode structure is used, the vertical alignment films are formed on the opposing sides, and the first substrate and the second substrate are formed. Between the substrates, the positive dielectric anisotropic liquid crystals shown in Examples 55 to 59 and Comparative Example 4 were each added with 2-methyl-acrylic acid 4 ′- ⁇ 2- [4- (2-acryloyloxy-ethyl) -phenoxycarbonyl]. ] A liquid crystal panel was prepared by sandwiching a composition to which 0.3% by mass of -ethyl ⁇ -biphenyl-4-yl ester was added.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 55 to 59 is faster than the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Comparative Example 4. Response speed, more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and higher contrast ratio.
- Example 62 The electrode structure shown in FIG. 4 is formed on a second substrate, a first substrate without an electrode structure is used, a vertical alignment film is formed on one of the opposing sides, and a horizontal alignment film is formed on the other. An alignment film is formed, and each of the positive dielectric anisotropic liquid crystals shown in Examples 55 to 59 and Comparative Example 4 is formed between the first substrate and the second substrate by 2-methyl-acrylic acid 4 ′- ⁇ 2
- a liquid crystal panel was prepared by sandwiching a composition to which 0.3% by mass of-[4- (2-acryloyloxy-ethyl) -phenoxycarbonyl] -ethyl ⁇ -biphenyl-4-yl ester was added.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 55 to 59 is faster than the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Comparative Example 4. Response speed, more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and higher contrast ratio.
- Example 63 to 65 The electrode structure shown in FIG. 4 is formed on the second substrate, the first substrate not provided with the electrode structure is used, the vertical alignment films are formed on the opposing sides, and the first substrate and the second substrate are formed.
- the liquid crystal panel sandwiching the positive dielectric anisotropic liquid crystal shown in Examples 63 to 65 has a higher response speed than the conventional liquid crystal panel sandwiching the positive dielectric anisotropic liquid crystal, Realized more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and larger contrast ratio.
- Comparative Example 5 In the same manner as in Example 63, the liquid crystal panel of Comparative Example 5 was prepared by sandwiching the positive dielectric anisotropic liquid crystal shown in Table 22, and the physical properties thereof were measured. The results are shown in Table 22 above.
- the liquid crystal panel of Comparative Example 5 in which the positive dielectric anisotropic liquid crystal is sandwiched has a slower response speed, a slightly lower transmitted light amount, and particularly poor retention and long-term reliability.
- Example 66 and 67 In the same manner as in Example 63 and Comparative Example 5, a liquid crystal panel was prepared by sandwiching a positive dielectric anisotropic liquid crystal shown in Table 23 between the first substrate and the second substrate.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 66 and 67 has a higher response speed than the conventional liquid crystal panel holding the positive dielectric anisotropic liquid crystal, Realized more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and larger contrast ratio.
- Example 68 The electrode structure shown in FIG. 4 is formed on a second substrate, a first substrate without an electrode structure is used, a vertical alignment film is formed on one of the opposing sides, and a horizontal alignment film is formed on the other. An alignment film was formed, and a positive dielectric anisotropic liquid crystal shown in Examples 63 to 67 and Comparative Example 5 was sandwiched between the first substrate and the second substrate to prepare a liquid crystal panel.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 63 to 67 is faster than the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Comparative Example 5. Response speed, more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and higher contrast ratio.
- Example 69 The electrode structure shown in FIG. 4 is formed on the second substrate, the first substrate not provided with the electrode structure is used, the vertical alignment films are formed on the opposing sides, and the first substrate and the second substrate are formed. Between the substrates, the positive dielectric anisotropic liquid crystals shown in Examples 63 to 67 and Comparative Example 5 were each added with 2-methyl-acrylic acid 4 ′- ⁇ 2- [4- (2-acryloyloxy-ethyl) -phenoxycarbonyl]. ] A liquid crystal panel was prepared by sandwiching a composition to which 0.3% by mass of -ethyl ⁇ -biphenyl-4-yl ester was added.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 63 to 67 is faster than the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Comparative Example 5. Response speed, more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and higher contrast ratio.
- Example 70 The electrode structure shown in FIG. 4 is formed on a second substrate, a first substrate without an electrode structure is used, a vertical alignment film is formed on one of the opposing sides, and a horizontal alignment film is formed on the other. An alignment film is formed, and each of the positive dielectric anisotropic liquid crystals shown in Examples 63 to 67 and Comparative Example 5 is 2-methyl-acrylic acid 4 ′- ⁇ 2 between the first substrate and the second substrate.
- a liquid crystal panel was prepared by sandwiching a composition to which 0.3% by mass of-[4- (2-acryloyloxy-ethyl) -phenoxycarbonyl] -ethyl ⁇ -biphenyl-4-yl ester was added.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 63 to 67 is faster than the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Comparative Example 5. Response speed, more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and higher contrast ratio.
- Example 71 to 73 The electrode structure shown in FIG. 4 is formed on the second substrate, the first substrate not provided with the electrode structure is used, the vertical alignment films are formed on the opposing sides, and the first substrate and the second substrate are formed.
- the liquid crystal panel sandwiching positive dielectric anisotropic liquid crystals shown in Examples 71 to 73 has a faster response speed than the conventional liquid crystal panel sandwiching positive dielectric anisotropic liquid crystals. Realized more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and larger contrast ratio.
- Comparative Example 6 In the same manner as in Example 71, a liquid crystal panel of Comparative Example 6 was produced by sandwiching the positive dielectric anisotropic liquid crystal shown in Table 25, and the physical properties thereof were measured. The results are shown in Table 25.
- the liquid crystal panel of Comparative Example 6 sandwiching the positive dielectric anisotropic liquid crystal has a slower response speed, a slightly lower transmitted light amount, and particularly poor retention and long-term reliability.
- Example 74 and 75 In the same manner as in Example 71 / Comparative Example 6, a positive dielectric anisotropic liquid crystal shown in Table 26 was sandwiched between the first substrate and the second substrate to prepare a liquid crystal panel.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 74 and 75 has a higher response speed than the conventional liquid crystal panel holding the positive dielectric anisotropic liquid crystal. Realized more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and larger contrast ratio.
- Example 76 The electrode structure shown in FIG. 4 is formed on a second substrate, a first substrate without an electrode structure is used, a vertical alignment film is formed on one of the opposing sides, and a horizontal alignment film is formed on the other. An alignment film was formed, and a positive dielectric anisotropic liquid crystal shown in Examples 71 to 75 and Comparative Example 6 was sandwiched between the first substrate and the second substrate to prepare a liquid crystal panel.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 71 to 75 is faster than the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Comparative Example 6. Response speed, more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and higher contrast ratio.
- Example 77 The electrode structure shown in FIG. 4 is formed on the second substrate, the first substrate not provided with the electrode structure is used, the vertical alignment films are formed on the opposing sides, and the first substrate and the second substrate are formed. Between the substrates, the positive dielectric anisotropic liquid crystals shown in Examples 71 to 75 and Comparative Example 6 were each added with 2-methyl-acrylic acid 4 ′- ⁇ 2- [4- (2-acryloyloxy-ethyl) -phenoxycarbonyl]. ] A liquid crystal panel was prepared by sandwiching a composition to which 0.3% by mass of -ethyl ⁇ -biphenyl-4-yl ester was added.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 71 to 75 is faster than the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Comparative Example 6. Response speed, more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and higher contrast ratio.
- Example 78 The electrode structure shown in FIG. 4 is formed on a second substrate, a first substrate without an electrode structure is used, a vertical alignment film is formed on one of the opposing sides, and a horizontal alignment film is formed on the other. An alignment film is formed, and each of the positive dielectric anisotropic liquid crystals shown in Examples 71 to 75 and Comparative Example 6 is formed between the first substrate and the second substrate by 2-methyl-acrylic acid 4 ′- ⁇ 2
- a liquid crystal panel was prepared by sandwiching a composition to which 0.3% by mass of-[4- (2-acryloyloxy-ethyl) -phenoxycarbonyl] -ethyl ⁇ -biphenyl-4-yl ester was added.
- the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Examples 71 to 75 is faster than the liquid crystal panel holding the positive dielectric anisotropic liquid crystal shown in Comparative Example 6. Response speed, more transmitted light, reduced light leakage due to external pressure, wider viewing angle, and higher contrast ratio.
Abstract
Description
しかし、VAIPS方式においては、これらの一般的な計算式は当てはまらず、液晶材料の選択の基準が無いことから、性能の改善が進まず、結果として液晶表示装置としての応用は遅れていた。
液晶表示装置には明るい輝度でより高い黒レベルにすることでメガコントラスト(CR)を目指す課題もある。LCDの画素表示面積を大きく出来るように開口率を改善したり、DBEFやCLCなどの輝度向上フィルムを適用したり、液晶の垂直配向させる場合に突起などによる光漏れを低減するなどの提案がされている。更に、タッチパネル方式における押圧力にも乱れにくい表示も求められている。
前記液晶組成物が一般式(LC1)から一般式(LC5)
数4からセル構成としては、dgapをなるべく小さく、dITOをなるべく大きくすることにより、低駆動電圧化が図れ、使用する液晶組成物としてはΔεの絶対値が大きく、K33が小さいものを選択することにより、低駆動電圧化が図れることが分かった。これら知見をもとに、上記液晶表示装置に適切な負の誘電異方性液晶を見出した。
A1及びA2はそれぞれ独立して、1,4-シクロヘキシレン基、1,4-フェニレン基、3-フルオロ-1,4-フェニレン基又は3,5-ジフルオロ-1,4-フェニレン基が好ましく、
X1~X5はそれぞれ独立してH又はFが好ましく、YはF、CF3又はOCF3が好ましく、
Z1~Z4はそれぞれ独立して単結合、-C≡C-、-CH2CH2-、-OCH2-、-CH2O-、-OCF2-又は-CF2O-が好ましく、存在するZ1~Z4の一つが-C≡C-、-CH2CH2-、-OCH2-、-CH2O-、-OCF2-又は-CF2O-であり、Z1~Z4の内、他に存在する置換基がある場合にはこれらの置換基は単結合であることが好ましく、
m1及びm2はそれぞれ独立して0~2の整数を表すことが好ましく、m1+m2は1又は2が好ましい。
一般式(LC1)から一般式(LC5)で表される液晶化合物は、より好ましくは一般式(LC1)が一般式(LC1)-1から一般式(LC1)-4
一般式(LC2)が下記一般式(LC2)-1から一般式(LC2)-10
一般式(LC3)が下記一般式(LC3)-1から一般式(LC3)-34
一般式(LC4)が下記一般式(LC4)-1から一般式(LC4)-8であり、一般式(LC5)が下記一般式(LC5)-1から一般式(LC5)-6
一般式(LC1)及び一般式(LC2)においてR1はアルケニルであり及び/又はR2がアルコキシ基又はアルケニルオキシ基であることが好ましく、一般式(LC3)~(LC5)においてR1及びR2の少なくとも一方がアルケニルであることが好ましく、一般式(LC3)においてZ1及びZ2の少なくとも一方が-OCH2-又は-CH2O-である化合物が好ましい。
Sp1及びSp2がそれぞれ独立してアルキレン基を表し、該アルキレン基は1つ以上のハロゲン原子又はCNにより置換されていても良く、この基中に存在する1つ又は2つ以上のCH2基はO原子が直接隣接しないように-O-、-S-、-NH-、-N(CH3)-、-CO-、-COO-、-OCO-、-OCOO-、-SCO-、-COS-又は-C≡C-により置き換えられていてもよく、
P1及びP2がそれぞれ独立して以下の一般式(PC1-a)~一般式(PC1-d)
TN-I :ネマチック相-等方性液体相転移温度(℃)を液晶相上限温度
Δε :誘電率異方性
Δn :屈折率異方性
Vsat :周波数1KHzの矩形波を印加した時の透過率が90%変化する印加電圧
τr+d/msec:dITO=10μm、dgap=10μm、第1基板、第2基板とも配向膜SE-5300のセルを使用した際の応答速度
化合物記載に下記の略号を使用する。
-2- -CH2CH2-
-1O- -CH2O-
-O1- -OCH2-
-V- -CO-
-VO- -COO-
-CFFO- -CF2O-
-F -F
-Cl -Cl
-CN -C≡N
-OCFFF -OCF3
-CFFF -CF3
-OCFF -OCHF2
-On -OCnH2n+1
-T- -C≡C-
ndm- CnH2n+1-HC=CH-(CH2)m-1-
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側に垂直配向性の配向膜を形成し、第一の基板と第二の基板の間に表1に示す正の誘電異方性を有する液晶組成物を挟持して実施例1の液晶表示装置を作成した。(dcell=4.0μm、dITO=10μm、dgap=10μm、配向膜SE-5300)この液晶表示装置の物性値を表1に併せて示す。
実施例1で用いた液晶組成物を用いて従来のTN液晶表示装置を作製しその物性値を測定した。その結果を表2に示す。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側の片方に垂直配向性の配向膜を形成し、他方に水平配向性の配向膜を形成し、第一の基板と第二の基板の間に表1に示す正の誘電異方性を有する液晶組成物を挟持して実施例2の液晶表示装置を作成した。(dcell=4.0μm、dITO=10μm、dgap=10μm、配向膜SE-5300、AL-1051)
該液晶表示装置は同じ正の誘電異方性液晶を狭持した従来のECB液晶表示装置等と比較して、より高速な応答速度、より多い透過光量、外圧による光漏れの低減、より広範囲な視野角、より大きなコントラスト比を実現した。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側に垂直配向性の配向膜を形成し、第一の基板と第二の基板の間に表1に示す正の誘電異方性を有する液晶組成物に各々2-メチルーアクリル酸4‘-{2-[4-(2-アクリロイルオキシーエチル)―フェノキシカルボニル]―エチル}―ビフェニル-4-イルエステルを0.3質量%添加した組成物を挟持して実施例3の液晶表示装置を作成した。(dcell=4.0μm、dITO=10μm、dgap=10μm、配向膜SE-5300)電極間に駆動電圧を印加したまま、紫外線を600秒間照射(3.0J/cm2)し、重合処理を行った。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側の片方に垂直配向性の配向膜を形成し、他方に水平配向性の配向膜を形成し、第一の基板と第二の基板の間に表1に示す正の誘電異方性を有する液晶組成物に各々2-メチルーアクリル酸4‘-{2-[4-(2-アクリロイルオキシーエチル)―フェノキシカルボニル]―エチル}―ビフェニル-4-イルエステルを0.3質量%を添加した組成物を挟持して実施例4の液晶表示装置を作成した。(dcell=4.0μm、dITO=10μm、dgap=10μm、配向膜SE-5300、AL-1051)電極間に駆動電圧を印加したまま、紫外線を600秒間照射(3.0J/cm2)し、重合処理を行った。
実施例1と同様に表2に示す正の誘電異方性液晶を狭持して比較例2の液晶表示装置を作製しその物性値を測定し、その結果を表2に示す。
実施例1と同様に表3に示す正の誘電異方性液晶を狭持して実施例5の液晶表示装置を、実施例1と同様に実施例6の液晶表示装置及び実施例1と同様に実施例7の液晶表示装置を作成した。
実施例1と同様に表4に示す正の誘電異方性液晶を狭持して実施例8の液晶表示装置を、実施例1と同様に実施例9の液晶表示装置及び実施例1と同様に実施例10の液晶表示装置を作成した。
実施例1と同様に表5に示す正の誘電異方性液晶を狭持して実施例11の液晶表示装置を、実施例1と同様に実施例12の液晶表示装置及び実施例1と同様に実施例13の液晶表示装置を作成した。
実施例1と同様に表6に示す正の誘電異方性液晶を狭持して実施例14の液晶表示装置を、実施例1と同様に実施例15の液晶表示装置、実施例1と同様に実施例16の液晶表示装置及び実施例1と同様に表7に示す正の誘電異方性液晶を狭持して実施例17の液晶表示装置を作成した。
dcell=3.0μm、dITO=10μm、dgap=10μmとした以外は実施例1と同様に表8に示す正の誘電異方性液晶を狭持して実施例18の液晶表示装置を、実施例1と同様に実施例19の液晶表示装置、実施例1と同様に実施例20の液晶表示装置及び実施例1と同様に実施例21の液晶表示装置を作成した。
dcell=3.5μm、dITO=10μm、dgap=10μmとした以外は実施例1と同様に表9に示す正の誘電異方性液晶を狭持して実施例22の液晶表示装置を及び実施例1と同様に実施例23の液晶表示装置を作成した。
実施例1と同様に表10に示す正の誘電異方性液晶を狭持して実施例24の液晶表示装置及び実施例1と同様に実施例25の液晶表示装置を作成した。
dITO=4μm、dgap=4μmとしたセルに実施例5、12又は17で使用した正の誘電異方性液晶組成物を狭持して、それぞれ実施例26から28の液晶表示装置を作成し、応答速度を測定したところ、下記の結果を得た。
実施例26:τr+d=1.6msec(実施例5の液晶組成物)
実施例27:τr+d=1.3msec(実施例12の液晶組成物)
実施例28:τr+d=0.9msec(実施例17の液晶組成物)
実施例26から28の液晶表示装置は応答が極めて速い特性を有していた。また、本実施例で作成した液晶表示装置に押圧を加えたところ、従来のVA表示では生じていた光漏れがほとんど見られなかった。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側に垂直配向性の配向膜を形成し、第一の基板と第二の基板の間に表11に示す正の誘電異方性液晶を狭持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300)
実施例29と同様に表12に示す正の誘電異方性液晶を狭持して比較例3の液晶パネルを作製しその物性値を測定した。その結果を前記表12に示す。
実施例29・比較例3と同様に第一の基板と第二の基板の間に表13に示す正の誘電異方性液晶を狭持して液晶パネルを作成した。
実施例29・比較例3と同様に第一の基板と第二の基板の間に表14に示す正の誘電異方性液晶を狭持して液晶パネルを作成した。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側の片方に垂直配向性の配向膜を形成し、他方に水平配向性の配向膜を形成し、第一の基板と第二の基板の間に実施例29~38及び比較例3に示した正の誘電異方性液晶を挟持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300、AL-1051)
実施例29~38に示した正の誘電異方性液晶を狭持した該液晶パネルは比較例3に示した正の誘電異方性液晶を狭持した該液晶パネルと比較して、より高速な応答速度、より多い透過光量、外圧による光漏れの低減、より広範囲な視野角、より大きなコントラスト比を実現した。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側に垂直配向性の配向膜を形成し、第一の基板と第二の基板の間に実施例29~38及び比較例3に示した正の誘電異方性液晶に各々2-メチルーアクリル酸4‘-{2-[4-(2-アクリロイルオキシーエチル)―フェノキシカルボニル]―エチル}―ビフェニル-4-イルエステルを0.3質量%添加した組成物を挟持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300)電極間に駆動電圧を印加したまま、紫外線を600秒間照射(3.0J/cm2)し、重合処理を行った。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側の片方に垂直配向性の配向膜を形成し、他方に水平配向性の配向膜を形成し、第一の基板と第二の基板の間に実施例29~38及び比較例3に示した正の誘電異方性液晶に各々2-メチルーアクリル酸4‘-{2-[4-(2-アクリロイルオキシーエチル)―フェノキシカルボニル]―エチル}―ビフェニル-4-イルエステルを0.3質量%添加した組成物を挟持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300、AL-1051)電極間に駆動電圧を印加したまま、紫外線を600秒間照射(3.0J/cm2)し、重合処理を行った。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側に垂直配向性の配向膜を形成し、第一の基板と第二の基板の間に表15に示す正の誘電異方性液晶を狭持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300)
実施例42~45に示した正の誘電異方性液晶を狭持した該液晶パネルは従来の正の誘電異方性液晶を狭持した該液晶パネルと比較して、より高速な応答速度、より多い透過光量、外圧による光漏れの低減、より広範囲な視野角、より大きなコントラスト比を実現した。
実施例42と同様に第一の基板と第二の基板の間に表16に示す正の誘電異方性液晶を狭持して液晶パネルを作成した。
実施例42と同様に第一の基板と第二の基板の間に表17に示す正の誘電異方性液晶を狭持して液晶パネルを作成した。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側の片方に垂直配向性の配向膜を形成し、他方に水平配向性の配向膜を形成し、第一の基板と第二の基板の間に実施例42~51及び比較例1~3に示した正の誘電異方性液晶を挟持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300、AL-1051)
実施例42~51に示した正の誘電異方性液晶を狭持した該液晶パネルは比較例1~3に示した正の誘電異方性液晶を狭持した該液晶パネルと比較して、より高速な応答速度、より多い透過光量、外圧による光漏れの低減、より広範囲な視野角、より大きなコントラスト比を実現した。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側に垂直配向性の配向膜を形成し、第一の基板と第二の基板の間に実施例42~51及び比較例1~3に示した正の誘電異方性液晶に各々2-メチルーアクリル酸4‘-{2-[4-(2-アクリロイルオキシーエチル)―フェノキシカルボニル]―エチル}―ビフェニル-4-イルエステルを0.3質量%添加した組成物を挟持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300)電極間に駆動電圧を印加したまま、紫外線を600秒間照射(3.0J/cm2)し、重合処理を行った。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側の片方に垂直配向性の配向膜を形成し、他方に水平配向性の配向膜を形成し、第一の基板と第二の基板の間に実施例42~51及び比較例1~3に示した正の誘電異方性液晶に各々2-メチルーアクリル酸4‘-{2-[4-(2-アクリロイルオキシーエチル)―フェノキシカルボニル]―エチル}―ビフェニル-4-イルエステルを0.3質量%添加した組成物を挟持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300、AL-1051)電極間に駆動電圧を印加したまま、紫外線を600秒間照射(3.0J/cm2)し、重合処理を行った。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側に垂直配向性の配向膜を形成し、第一の基板と第二の基板の間に表18に示す正の誘電異方性液晶を狭持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300)
実施例55と同様に表19に示す正の誘電異方性液晶を狭持して比較例4の液晶パネルを作製しその物性値を測定した。その結果を前記表19に示す。
実施例55・比較例4と同様に第一の基板と第二の基板の間に表20に示す正の誘電異方性液晶を狭持して液晶パネルを作成した。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側の片方に垂直配向性の配向膜を形成し、他方に水平配向性の配向膜を形成し、第一の基板と第二の基板の間に実施例55~59及び比較例4に示した正の誘電異方性液晶を挟持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300、AL-1051)
実施例55~59に示した正の誘電異方性液晶を狭持した該液晶パネルは比較例4に示した正の誘電異方性液晶を狭持した該液晶パネルと比較して、より高速な応答速度、より多い透過光量、外圧による光漏れの低減、より広範囲な視野角、より大きなコントラスト比を実現した。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側に垂直配向性の配向膜を形成し、第一の基板と第二の基板の間に実施例55~59及び比較例4に示した正の誘電異方性液晶に各々2-メチルーアクリル酸4‘-{2-[4-(2-アクリロイルオキシーエチル)―フェノキシカルボニル]―エチル}―ビフェニル-4-イルエステルを0.3質量%添加した組成物を挟持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300)電極間に駆動電圧を印加したまま、紫外線を600秒間照射(3.0J/cm2)し、重合処理を行った。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側の片方に垂直配向性の配向膜を形成し、他方に水平配向性の配向膜を形成し、第一の基板と第二の基板の間に実施例55~59及び比較例4に示した正の誘電異方性液晶に各々2-メチルーアクリル酸4‘-{2-[4-(2-アクリロイルオキシーエチル)―フェノキシカルボニル]―エチル}―ビフェニル-4-イルエステルを0.3質量%添加した組成物を挟持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300、AL-1051)電極間に駆動電圧を印加したまま、紫外線を600秒間照射(3.0J/cm2)し、重合処理を行った。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側に垂直配向性の配向膜を形成し、第一の基板と第二の基板の間に表21に示す正の誘電異方性液晶を狭持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300)
実施例63と同様に表22に示す正の誘電異方性液晶を狭持して比較例5の液晶パネルを作製しその物性値を測定した。その結果を前記表22に示す。
実施例63・比較例5と同様に第一の基板と第二の基板の間に表23に示す正の誘電異方性液晶を狭持して液晶パネルを作成した。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側の片方に垂直配向性の配向膜を形成し、他方に水平配向性の配向膜を形成し、第一の基板と第二の基板の間に実施例63~67及び比較例5に示した正の誘電異方性液晶を挟持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300、AL-1051)
実施例63~67に示した正の誘電異方性液晶を狭持した該液晶パネルは比較例5に示した正の誘電異方性液晶を狭持した該液晶パネルと比較して、より高速な応答速度、より多い透過光量、外圧による光漏れの低減、より広範囲な視野角、より大きなコントラスト比を実現した。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側に垂直配向性の配向膜を形成し、第一の基板と第二の基板の間に実施例63~67及び比較例5に示した正の誘電異方性液晶に各々2-メチルーアクリル酸4‘-{2-[4-(2-アクリロイルオキシーエチル)―フェノキシカルボニル]―エチル}―ビフェニル-4-イルエステルを0.3質量%添加した組成物を挟持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300)電極間に駆動電圧を印加したまま、紫外線を600秒間照射(3.0J/cm2)し、重合処理を行った。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側の片方に垂直配向性の配向膜を形成し、他方に水平配向性の配向膜を形成し、第一の基板と第二の基板の間に実施例63~67及び比較例5に示した正の誘電異方性液晶に各々2-メチルーアクリル酸4‘-{2-[4-(2-アクリロイルオキシーエチル)―フェノキシカルボニル]―エチル}―ビフェニル-4-イルエステルを0.3質量%添加した組成物を挟持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300、AL-1051)電極間に駆動電圧を印加したまま、紫外線を600秒間照射(3.0J/cm2)し、重合処理を行った。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側に垂直配向性の配向膜を形成し、第一の基板と第二の基板の間に表24に示す正の誘電異方性液晶を狭持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300)
実施例71と同様に表25に示す正の誘電異方性液晶を狭持して比較例6の液晶パネルを作製しその物性値を測定した。その結果を前記表25に示す。
実施例71・比較例6と同様に第一の基板と第二の基板の間に表26に示す正の誘電異方性液晶を狭持して液晶パネルを作成した。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側の片方に垂直配向性の配向膜を形成し、他方に水平配向性の配向膜を形成し、第一の基板と第二の基板の間に実施例71~75及び比較例6に示した正の誘電異方性液晶を挟持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300、AL-1051)
実施例71~75に示した正の誘電異方性液晶を狭持した該液晶パネルは比較例6に示した正の誘電異方性液晶を狭持した該液晶パネルと比較して、より高速な応答速度、より多い透過光量、外圧による光漏れの低減、より広範囲な視野角、より大きなコントラスト比を実現した。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側に垂直配向性の配向膜を形成し、第一の基板と第二の基板の間に実施例71~75及び比較例6に示した正の誘電異方性液晶に各々2-メチルーアクリル酸4‘-{2-[4-(2-アクリロイルオキシーエチル)―フェノキシカルボニル]―エチル}―ビフェニル-4-イルエステルを0.3質量%添加した組成物を挟持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300)電極間に駆動電圧を印加したまま、紫外線を600秒間照射(3.0J/cm2)し、重合処理を行った。
図4に示す電極構造を第二の基板に作成し、電極構造を設けない第一の基板を使用し各々の対向側の片方に垂直配向性の配向膜を形成し、他方に水平配向性の配向膜を形成し、第一の基板と第二の基板の間に実施例71~75及び比較例6に示した正の誘電異方性液晶に各々2-メチルーアクリル酸4‘-{2-[4-(2-アクリロイルオキシーエチル)―フェノキシカルボニル]―エチル}―ビフェニル-4-イルエステルを0.3質量%添加した組成物を挟持して液晶パネルを作成した。(dITO=4μm、dgap=4μm、配向膜SE-5300、AL-1051)電極間に駆動電圧を印加したまま、紫外線を600秒間照射(3.0J/cm2)し、重合処理を行った。
Claims (25)
- 第一の基板と、第二の基板と、前記第一の基板と第二の基板間に挟持された正の誘電率異方性を有する液晶組成物層からなる液晶表示装置であって、前記液晶表示装置は、複数の画素を有し、前記画素のそれぞれは、独立的に制御可能であって、前記画素は一対の画素電極と共通電極を有し、この両電極が前記第一と第二の両基板の少なくとも一方の基板に設けられ、前記液晶組成物層の液晶分子の長軸が前記基板面に略垂直に配向しているか又は、ハイブリッド配向しており、
前記液晶組成物が一般式(LC1)から一般式(LC5)
- 液晶組成物が、さらに、一般式(LC6)
- 一般式(LC3)が下記一般式(LC3)-1から一般式(LC3)-28
- 液晶組成物が、重合性化合物を1種又は2種以上含有する請求項1~7いずれか一項に記載の液晶表示装置。
- 請求項8に記載の重合性化合物が、ベンゼン誘導体、トリフェニレン誘導体、トルキセン誘導体、フタロシアニン誘導体又はシクロヘキサン誘導体を分子の中心の母核とし、直鎖のアルキル基、直鎖のアルコキシ基又は置換ベンゾイルオキシ基がその側鎖として放射状に置換した構造である円盤状液晶化合物である、液晶表示装置。
- 請求項8又は9における液晶組成物が開始剤を実質的に含まない液晶組成物を使用したことを特徴とする請求項8~10記載の液晶表示装置。
- 重合性化合物を0.1~2.0質量%含有する液晶組成物を使用したことを特徴とする請求項8~10いずれか一項に記載の液晶表示装置。
- さらに酸化防止剤を1種又は2種以上含有した液晶組成物を使用したことを特徴とする請求項1~11いずれか一項に記載の液晶表示装置。
- さらにUV吸収剤を1種又は2種以上含有した液晶組成物を使用したことを特徴とする請求項1~12いずれか一項に記載の液晶表示装置。
- 液晶組成物の屈折率異方性(Δn)と表示装置の第一の基板と、第二の基板との間隔(d)の積(Δn・d)が0.33~0.40である請求項1~13いずれか一項に記載の液晶表示装置。
- 液晶組成物の屈折率異方性(Δn)と表示装置の第一の基板と、第二の基板との間隔(d)の積(Δn・d)が0.34~0.44である請求項1~13いずれか一項に記載の液晶表示装置。
- 表示装置の第一の基板と、第二の基板上の液晶組成物と接する面にポリイミド(PI)、カルコン、シンナメートからなる配向膜を設けた請求項1~15いずれか一項に記載の液晶表示装置。
- 表示装置の第一の基板と、第二の基板上の液晶組成物と接する面に光配向技術を用いて作成した配向膜を設けた請求項1~16いずれか一項に記載の液晶表示装置。
- 基板と液晶組成物のチルト角が85~90°である請求項1に記載の液晶表示装置。
- 第一の基板又は第二の基板と液晶組成物のチルト角が85~90°であり、残りの基板と液晶組成物のチルト角が3~20°である請求項1に記載の液晶表示装置。
- 液晶組成物が、さらに一般式(LC1)-1、(LC2)-1、(LC3)-4、(LC3)-5、(LC3)-6及び(LC3)-11から選ばれる1種又は2種以上の化合物を含有する請求項1~19いずれか一項に記載の液晶表示装置。
- 液晶組成物が、さらに一般式(LC1)-2、(LC1)-3、(LC1)-4、(LC2)-4、(LC2)-5、(LC2)-6、(LC2)-7、(LC2)-8、(LC2)-9及び(LC2)-10から選ばれる1種又は2種以上の化合物を含有する請求項1~19いずれか一項に記載の液晶表示装置。
- 液晶組成物が、さらに一般式(LC3)-3、(LC3)-22、(LC3)-23、(LC3)-24及び(LC3)-25から選ばれる1種又は2種以上の化合物を含有する請求項1~19いずれか一項に記載の液晶表示装置。
- 液晶組成物が、さらに一般式(LC3)-3、(LC3)-22、(LC3)-23、(LC3)-24及び(LC3)-25から選ばれる1種又は2種以上の化合物を含有する請求項1~19いずれか一項に記載の液晶表示装置。
- 液晶組成物が、さらに一般式(LC6)-1、(LC6)-5及び(LC6)-14から選ばれる1種又は2種以上の化合物を含有する請求項1~19いずれか一項に記載の液晶表示装置。
- 液晶組成物が、さらに一般式(LC6)-4、(LC6)-12及び(LC6)-15から選ばれる1種又は2種以上の化合物を含有する請求項1~19いずれか一項に記載の液晶表示装置。
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US13/825,767 US9404037B2 (en) | 2010-09-28 | 2011-09-22 | Liquid crystal display device and useful liquid crystal composition |
CN201180046483.3A CN103140567B (zh) | 2010-09-28 | 2011-09-22 | 液晶显示装置及有用的液晶组合物 |
KR1020137007119A KR101374694B1 (ko) | 2010-09-28 | 2011-09-22 | 신규 액정 표시 장치 및 유용한 액정 조성물 |
JP2012536399A JP5257802B2 (ja) | 2010-09-28 | 2011-09-22 | 新規液晶表示装置及び有用な液晶組成物 |
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CN103140567B (zh) | 2015-02-04 |
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