WO2017002789A1 - 液晶組成物及びこれを用いた液晶表示素子 - Google Patents
液晶組成物及びこれを用いた液晶表示素子 Download PDFInfo
- Publication number
- WO2017002789A1 WO2017002789A1 PCT/JP2016/069095 JP2016069095W WO2017002789A1 WO 2017002789 A1 WO2017002789 A1 WO 2017002789A1 JP 2016069095 W JP2016069095 W JP 2016069095W WO 2017002789 A1 WO2017002789 A1 WO 2017002789A1
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- group
- liquid crystal
- ring
- independently
- diyl
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
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- C09K19/34—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring
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- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
- C09K19/12—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
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- C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
- C09K19/3001—Cyclohexane rings
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- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
- C09K19/3001—Cyclohexane rings
- C09K19/3066—Cyclohexane rings in which the rings are linked by a chain containing carbon and oxygen atoms, e.g. esters or ethers
- C09K19/3068—Cyclohexane rings in which the rings are linked by a chain containing carbon and oxygen atoms, e.g. esters or ethers chain containing -COO- or -OCO- groups
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- C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
- C09K19/44—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing compounds with benzene rings directly linked
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- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13775—Polymer-stabilized liquid crystal layers
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- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K2019/0444—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group
- C09K2019/0466—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group the linking chain being a -CF2O- chain
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- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
- C09K19/12—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
- C09K2019/121—Compounds containing phenylene-1,4-diyl (-Ph-)
- C09K2019/123—Ph-Ph-Ph
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- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
- C09K19/14—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a carbon chain
- C09K19/18—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a carbon chain the chain containing carbon-to-carbon triple bonds, e.g. tolans
- C09K2019/181—Ph-C≡C-Ph
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- C09K19/3003—Compounds containing at least two rings in which the different rings are directly linked (covalent bond)
- C09K2019/3004—Cy-Cy
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- C09K19/06—Non-steroidal liquid crystal compounds
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- C09K2019/3009—Cy-Ph
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- C09K19/00—Liquid crystal materials
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- C09K19/06—Non-steroidal liquid crystal compounds
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- C09K19/00—Liquid crystal materials
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- C09K2019/3025—Cy-Ph-Ph-Ph
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- C09K2019/3063—Cy-Ph-C≡C-Ph
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- C09K2019/3075—Cy-COO-Ph
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- C09K2019/3077—Cy-Cy-COO-Ph
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- C09K19/06—Non-steroidal liquid crystal compounds
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- G02F2202/02—Materials and properties organic material
- G02F2202/022—Materials and properties organic material polymeric
- G02F2202/023—Materials and properties organic material polymeric curable
Definitions
- the present invention relates to a composition having a positive dielectric anisotropy ( ⁇ ) useful as an organic electronic material, medical pesticide, particularly a liquid crystal material for electro-optical liquid crystal display and a liquid crystal material for liquid crystal lens, and a liquid crystal using the composition
- ⁇ a positive dielectric anisotropy
- the present invention relates to a display element.
- Stereoscopic display displays a left-eye image and a right-eye image with different parallax (different viewpoints), and is recognized as a stereoscopic image with depth by the observer looking at each with the left and right eyes. be able to.
- a display device has been developed that can provide a more natural three-dimensional image to an observer by displaying three or more images having parallax with each other.
- Such display devices are broadly classified into those requiring special glasses and those that do not require them. However, the observer feels troublesome for the observer, and those that do not require special glasses are desired. It is rare.
- Examples of display devices that do not require dedicated glasses include a parallax barrier method and a lenticular lens method. In these methods, a plurality of videos (viewpoint videos) having parallax with each other are displayed simultaneously, and the visible videos differ depending on the relative positional relationship (angle) between the display device and the viewer's viewpoint.
- a parallax barrier display device using a liquid crystal element as a barrier is disclosed.
- the display switching liquid crystal display element Since it is placed between the display liquid crystal display element and the viewer, these display switching liquid crystal display elements need to be thinned, and for this purpose, a high birefringence ( ⁇ n) is required. Further, the display switching liquid crystal display element is bonded to the display liquid crystal display element by a polymer material. This bonding process is applied to the display switching liquid crystal display element, the polymerizable composition, and the display liquid crystal display element. On the other hand, since it is performed by irradiating UV from the display switching liquid crystal display element side, the liquid crystal composition used for the display switching liquid crystal display element must have strong resistance to UV irradiation. .
- the problem to be solved by the present invention is to provide a liquid crystal display element in which the occurrence of display defects is suppressed.
- the present invention provides a first panel having a liquid crystal layer and a color filter, a second panel having a liquid crystal layer, and a liquid crystal display element having a polymer between the first and second panels.
- the liquid crystal display element provided by the present invention has excellent display characteristics. Therefore, it is very useful as a liquid crystal display element capable of switching between 2D and 3D.
- the first panel having a liquid crystal layer and a color filter displays a 2D image when the present liquid crystal display element performs 2D display, and an image for the right eye when the present liquid crystal display element performs 3D display. And a panel for displaying an image for the left eye.
- the first panel has a pair of substrates, at least one of the substrates has an electrode, a liquid crystal layer is sandwiched between the substrates, and a color filter is provided. Further, it may have a liquid crystal alignment film, various optical filters, and a deflection film.
- the second panel having a liquid crystal layer transmits the 2D display displayed by the first panel when the present liquid crystal display element performs 2D display, and the first panel when the present liquid crystal display element performs 3D display.
- the second panel has a pair of substrates, at least one of the substrates has an electrode, and a liquid crystal layer is sandwiched between the substrates. Further, it may have a liquid crystal alignment film, various optical filters, and a deflection film.
- the polymer between the first and second panels is for bonding the first panel and the second panel, and is preferably transparent or close to it.
- the polymerizable composition is applied to one or both of the first panel and the second panel, the polymerizable composition is polymerized by irradiation with energy rays, and the first panel and the second panel are bonded together.
- UV light is preferable.
- Irradiation of energy rays is performed on the stacked first and second panels and the polymerizable composition sandwiched between them, but since the first panel has a color filter, when irradiated from the first panel side, Since it is not possible to irradiate the polymerizable composition with sufficient energy intensity, it is preferable to irradiate from the second panel side.
- the polymerizable composition is solidified by the energy rays transmitted through the second panel, and the first panel and the second panel are bonded. For this reason, the second panel is required to be able to withstand exposure to energy rays, and in particular, the liquid crystal layer is required to be resistant to energy rays.
- the polymer is solidified by irradiation of energy rays, and the first panel and the second panel can be bonded to each other, and the display of the first panel is not disturbed.
- Acrylic resin, epoxy resin, urethane resin Etc. are preferred.
- the liquid crystal layer of the second panel preferably contains one or more compounds represented by the general formula (i).
- R i1 represents an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH 2 — in the alkyl group are each independently —CH ⁇ CH—, — Optionally substituted by C ⁇ C—, —O—, —CO—, —COO— or —OCO—
- R i2 represents a hydrogen atom, fluorine atom, chlorine atom, cyano group, trifluoromethyl group, fluoromethoxy group, difluoromethoxy group, trifluoromethoxy group, 2,2,2-trifluoroethyl group, or 1 to 8 carbon atoms.
- one or two or more non-adjacent —CH 2 — in the alkyl group are each independently —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, Optionally substituted by -COO- or -OCO-, n i1 and n i2 each independently represent 0, 1, 2, or 3, while n i1 + n i2 represents 0, 1, 2, or 3,
- a i1 and A i2 are each independently (A) 1,4-cyclohexylene group (this is present in the group one -CH 2 - or nonadjacent two or more -CH 2 - may be replaced by -O- or -S- And (b) a 1,4-phenylene group (one —CH ⁇ present in this group or two or more non-adjacent —CH ⁇ may be replaced by —N ⁇ ).
- a hydrogen atom on the group (a) and the group (b) may be independently substituted with a cyano group, a fluorine atom or a chlorine atom
- Z i1 and Z i2 are each independently a single bond, —CH 2 CH 2 —, — (CH 2 ) 4 —, —OCH 2 —, —CH 2 O—, —OCF 2 —, —CF 2 O—, -COO- or -OCO-
- n i1 2, 3 or 4 and a plurality of A i1 are present, they may be the same or different, n i1 is 2, 3 or 4 and a plurality of Z i1 is present In the case, they may be the same or different.
- n i2 When n i2 is 2, 3 or 4, and there are a plurality of A i2 , they may be the same or different, and n when i2 is 2, 3 or 4 and a plurality of Z i2 are present, they may be the same or different;
- X i1 to X i8 each independently represents a hydrogen atom, a chlorine atom or a fluorine atom.
- R i1 represents an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, or alkenyloxy having 2 to 8 carbon atoms.
- a group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkenyloxy group having 2 to 5 carbon atoms is preferable.
- An alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms is more preferable, and an alkyl group having 2 to 5 carbon atoms or an alkenyl group having 2 to 3 carbon atoms is more preferable.
- an alkyl group is preferable, and in the case where importance is placed on a decrease in viscosity, an alkenyl group is preferable.
- the ring structure to which it is bonded is a phenyl group (aromatic)
- An alkenyl group having 4 to 5 atoms is preferable
- the ring structure to which the alkenyl group is bonded is a saturated ring structure such as cyclohexane, pyran and dioxane
- a straight-chain alkoxy group having 1 to 4 carbon atoms and a straight-chain alkenyl group having 2 to 5 carbon atoms are preferred.
- the total of carbon atoms and oxygen atoms, if present is preferably 5 or less, and is preferably linear.
- the alkenyl group is preferably selected from groups represented by any of the formulas (R1) to (R5). (The black dots in each formula represent carbon atoms in the ring structure.)
- R i2 is preferably a fluorine atom, a cyano group, a trifluoromethyl group or a trifluoromethoxy group when the compound represented by the general formula (i) is a so-called p-type compound having a positive ⁇ .
- a fluorine atom or a cyano group is preferred.
- R i2 represents the same meaning as R i1 , but R i2 and R i1 are the same. May be different.
- n i1 and n i2 are each independently preferably 0, 1 or 2
- n i1 + n i2 is preferably 0, 1 or 2
- 0 or 1 is preferred when emphasizing solubility, and emphasis is placed on improving ⁇ n In this case, 1 or 2 is preferable.
- a i1 and A i2 are each independently preferably aromatic when it is required to increase ⁇ n, and are preferably aliphatic for improving the response speed.
- It is preferably a 1,4-phenylene group in which one or more hydrogen atoms may be substituted with fluorine atoms.
- Z i1 and Z i2 are each independently a single bond, —CH 2 CH 2 —, —OCH 2 —, —CH 2 O—, —OCF 2 —, —CF 2 O—, —COO— or —OCO—.
- a single bond, —CH 2 CH 2 —, —OCH 2 —, —CF 2 O— or —COO— is preferable, and a single bond is preferable.
- X i1 to X i8 are each independently one of X i2 , X i4 , X i5 and X i7 when the compound represented by the general formula (i) is a so-called p-type compound in which ⁇ is positive.
- at least two are fluorine atoms, and preferably at least two are fluorine atoms.
- both X i2 and X i7 are fluorine atoms
- both X i4 and X i5 are fluorine atoms.
- X i1 to X i8 are all hydrogen atoms when the compound represented by the general formula (i) is a so-called nonpolar compound having ⁇ of approximately 0, or one is a fluorine atom and the other is a hydrogen atom. It is preferable that
- the lower limit value in the composition is 1% by mass (hereinafter,% in the composition is mass). % Is preferred), 2% is preferred, 5% is preferred, 7% is preferred, 9% is preferred, 10% is preferred, 12% is preferred, 15% is preferred, 17% is preferred, 20% Is preferred. Moreover, since it will cause problems, such as precipitation, if there is much content, as an upper limit, 50% is preferable, 40% is more preferable, 30% is more preferable, 25% is preferable, 20% is preferable, 18% is Preferably, 15% is preferable, 13% is preferable, and 10% is preferable.
- the compound represented by the general formula (i) is preferably a compound represented by the general formula (i-1).
- R i1 , R i2 , n i1 , A i1 , A i2 , Z i1 , Z i2 and X i1 to X i8 are R i1 , R i2 , n i1 , A i1 , A in the general formula (i)).
- i2 , Z i1 , Z i2 and X i1 to X i8 have the same meaning
- X i9 to X i12 each independently represent the same meaning as X i1 in formula (i)
- n i3 represents 0, 1, 2 or 3 but n i1 + n i3 represents 0, 1 or 2.
- R i1 , R i2 , n i1 , A i1 , A i2 , Z i1 , Z i2 and X i1 to X i8 in the general formula (i-1) are R i1 , R i2 , n i1 , It has the same meaning as A i1 , A i2 , Z i1 , Z i2 and X i1 to X i8 .
- n i3 is preferably 0 or 1
- n i1 + n i3 is preferably 0 or 1.
- X i1 to X i12 are selected from the group consisting of X i2 , X i4 , X i5 , X i7 , X i10 and X i11 when the compound represented by the general formula (i) is a so-called p-type compound in which ⁇ is positive.
- One or more are preferably fluorine atoms, and two or more are preferably fluorine atoms. It is also preferable that X i2 and X i7 , X i4 and X i5 , X i10 and X i11 are both fluorine atoms.
- X i1 to X i12 are all hydrogen atoms when the compound represented by the general formula (i) is a so-called nonpolar compound having ⁇ of almost 0, or one is a fluorine atom and the other is a hydrogen atom. It is preferable that
- one kind may be used, or two or more kinds may be used in combination.
- the compound represented by the general formula (i) is preferably each compound represented by the following general formula (ia-1) to general formula (ig-1).
- a compound having no liquid crystal phase can be added as necessary in order to adjust the physical property values of the liquid crystal composition.
- the general formulas (A1) to (A3) , (B1) to (B3) and (C1) to (C3) can be mentioned, and it is preferable to contain at least one of these compounds.
- the compounds represented by the general formulas (A1) to (A3) are so-called fluorine-based (halogen-based) p-type compounds.
- R b represents an alkyl group having 1 to 12 carbon atoms, which may be linear or have a methyl or ethyl branch, and has a 3- to 6-membered cyclic structure.
- Any —CH 2 — present in the group may be —O—, —CH ⁇ CH—, —CH ⁇ CF—, —CF ⁇ CH—, —CF ⁇ CF— or —C ⁇ C
- Any hydrogen atom present in the group may be substituted by a fluorine atom or a trifluoromethoxy group, a linear alkyl group having 1 to 7 carbon atoms, a carbon atom
- Alkyl groups are preferred. Further, when asymmetric carbon is generated by branching, the compound may be
- Ring A, Ring B and Ring C may each independently be substituted with a trans-1,4-cyclohexylene group, a transdecahydronaphthalene-trans-2,6-diyl group, or one or more fluorine atoms.
- the alkylene-2,6-diyl group or one to two fluorine atoms may be substituted 1,4-phenylene group is preferred.
- ring A when ring B is a trans-1,4-cyclohexylene group or a transdecahydronaphthalene-trans-2,6-diyl group, ring A may be a trans-1,4-cyclohexylene group.
- ring C when ring C is a trans-1,4-cyclohexylene group or a transdecahydronaphthalene-trans-2,6-diyl group, ring B and ring A are trans-1,4-cyclohexylene groups.
- ring A3 is preferably a trans-1,4-cyclohexylene group.
- L a , L b and L c are each a linking group and each independently represents a single bond, an ethylene group (—CH 2 CH 2 —), a 1,2-propylene group (—CH (CH 3 ) CH 2 — and —CH 2 CH (CH 3 ) —), 1,4-butylene group, —COO—, —OCO—, —OCF 2 —, —CF 2 O—, —CH ⁇ CH—, —CH ⁇ CF—, — CF ⁇ CH—, —CF ⁇ CF— or —CH ⁇ NN ⁇ CH—, each represents a single bond, ethylene group, 1,4-butylene group, —COO—, —OCF 2 —, —CF 2 O—, —CF ⁇ CF— or —C ⁇ C— is preferable, and a single bond or an ethylene group is particularly preferable. Further, it is preferable that at least one of (A2) represents a single bond and at least two of (A3) represent a single bond.
- Ring Z is an aromatic ring and can be represented by the following general formulas (La) to (Lc).
- Y a to Y j each independently represent a hydrogen atom or a fluorine atom.
- at least one of Y a and Y b is preferably a fluorine atom
- at least one of Y d to Y f is preferably a fluorine atom
- Y d is more preferably a fluorine atom.
- Terminal group P a represents a fluorine atom, a chlorine atom, trifluoromethoxy group, difluoromethoxy group, trifluoromethyl group or difluoromethyl group or 2 or more carbon atoms substituted by fluorine atoms 2 or 3 of the alkoxyl group
- the lower limit of the preferable content of the compounds represented by the general formulas (A1) to (A3) with respect to the total amount of the composition of the present invention is 1%, 2%, 5%, 8 %, 10%, 13%, 15%, 18%, 20%, 22%, 25%, 30%.
- the upper limit of the preferred content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10% 8% and 5%.
- the viscosity of the composition of the present invention is kept low and a composition having a high response speed is required, it is preferable to increase the upper limit value while increasing the lower limit value. Furthermore, when the composition of the present invention is required to maintain a high Tni and hardly burn-in, it is preferable to lower the lower limit and lower the upper limit. Further, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to increase the upper limit value while increasing the lower limit value.
- More preferable forms in the general formulas (A1) to (A3) can be represented by the following general formulas (A1a) to (A3c).
- A, B, C, Y a and Y b are A in the general formulas (A1) (A3), B , C, the same meaning as Y a and Y b) More preferably, they are the following compounds.
- the compounds represented by the general formulas (B1) to (B3) are so-called cyano p-type compounds.
- R c represents an alkyl group having 1 to 12 carbon atoms, which may be linear or have a methyl or ethyl branch and have a 3- to 6-membered cyclic structure.
- Any —CH 2 — present in the group may be —O—, —CH ⁇ CH—, —CH ⁇ CF—, —CF ⁇ CH—, —CF ⁇ CF— or —C ⁇ C
- Any hydrogen atom present in the group may be substituted by a fluorine atom or a trifluoromethoxy group, but a linear alkyl group having 1 to 7 carbon atoms, a carbon atom
- a linear 1-alkenyl group having 2 to 7 carbon atoms, a linear 3-alkenyl group having 4 to 7 carbon atoms, and a terminal group having 1 to 5 carbon atoms substituted with an alkoxyl group having 1 to 3 carbon atoms Alkyl groups are preferred. Further, when asymmetric carbon is generated by branching, the compound may be optically active or race
- Ring D, Ring E and Ring F may be each independently substituted with a trans-1,4-cyclohexylene group, a transdecahydronaphthalene-trans-2,6-diyl group, or one or more fluorine atoms.
- ring E is a trans-1,4-cyclohexylene group or a transdecahydronaphthalene-trans-2,6-diyl group
- ring D may be a trans-1,4-cyclohexylene group.
- Ring F is a trans-1,4-cyclohexylene group or a transdecahydronaphthalene-trans-2,6-diyl group
- Ring D and Ring E are trans-1,4-cyclohexylene groups.
- ring D is preferably a trans-1,4-cyclohexylene group.
- L d , L e and L f each independently represent a single bond, an ethylene group (—CH 2 CH 2 —), a 1,2-propylene group (—CH (CH 3 ) CH 2 — and ) —CH 2 CH (CH 3 ) —), 1,4-butylene group, —COO—, —OCO—, —OCF 2 —, —CF 2 O—, —CH ⁇ CH—, —CH ⁇ CF—, —CF ⁇ CH—, —CF ⁇ CF—, —OCH 2 —, —CH 2 O— or —CH ⁇ NN ⁇ CH— represents a single bond, an ethylene group, —COO—, —OCF 2 —, — CF 2 O—, —CF ⁇ CF— or —C ⁇ C— is preferred, and a single bond, an ethylene group or —COO— is particularly preferred. Further, it is preferable that at least one of them in (B2) represents a single bond in (B3).
- Ring Y is an aromatic ring and can be represented by the following general formulas (L d ) to (L f ).
- Y k to Y q each independently represents a hydrogen atom or a fluorine atom.
- Y m is preferably a fluorine atom.
- Terminal group P b is a cyano group (-CN), represents a cyanato group (-OCN) or -C ⁇ CCN, cyano group is preferable.
- the lower limit of the preferable content of the compounds represented by the general formulas (B1) to (B3) with respect to the total amount of the composition of the present invention is 1%, 2%, 5%, 8 %, 10%, 13%, 15%, 18%, 20%, 22%, 25%, 30%.
- the upper limit of the preferred content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10% 8% and 5%.
- the viscosity of the composition of the present invention is kept low and a composition having a high response speed is required, it is preferable to lower the lower limit value and raise the upper limit value. Furthermore, when the composition of the present invention is required to maintain a high Tni and hardly cause seizure, it is preferable to lower the lower limit and increase the upper limit. Further, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to increase the upper limit value while increasing the lower limit value.
- More preferable forms in the general formulas (B1) to (B3) can be represented by the following general formulas (B1a) to (B2c).
- the compounds represented by the general formulas (C1) to (C3) are so-called nonpolar compounds having a dielectric anisotropy of about 0.
- R d and R e each independently represents an alkyl group having 1 to 12 carbon atoms, which may be linear or have a methyl or ethyl branch, and 3 to 6 Any —CH 2 — present in the group may be —O—, —CH ⁇ CH—, —CH ⁇ CF—, —CF ⁇ CH—, —CF ⁇ Any hydrogen atom present in the group may be replaced by CF- or -C ⁇ C-, and may be substituted by a fluorine atom or a trifluoromethoxy group.
- Ring G, Ring H, Ring I and Ring J are each independently a trans-1,4-cyclohexylene group, a transdecahydronaphthalene-trans-2,6-diyl group, 1 to 2 fluorine atoms or 1,4-phenylene group optionally substituted by a methyl group, naphthalene-2,6-diyl group optionally substituted by one or more fluorine atoms, substituted by 1 or 2 fluorine atoms
- L g , L h and Li are each a linking group and each independently represents a single bond, an ethylene group (—CH 2 CH 2 —), a 1,2-propylene group (—CH (CH 3 ) CH 2 — and ) —CH 2 CH (CH 3 ) —), 1,4-butylene group, —COO—, —OCO—, —OCF 2 —, —CF 2 O—, —CH ⁇ CH—, —CH ⁇ CF—, —CF ⁇ CH—, —CF ⁇ CF— or —CH ⁇ NN ⁇ CH— represents a single bond, ethylene group, 1,4-butylene group, —COO—, —OCO—, —OCF 2 —, — CF 2 O—, —CF ⁇ CF—, —C ⁇ C— or —CH ⁇ NN ⁇ CH— are preferred, at least one of them in (C2) and at least two of them in (C3) are single bonds Is preferably represented.
- the lower limit of the preferable content of the compounds represented by the general formulas (C1) to (C3) with respect to the total amount of the composition of the present invention is 1%, 2%, 5%, 8 %, 10%, 13%, 15%, 18%, 20%, 22%, 25%, 30%.
- the upper limit of the preferred content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10% 8% and 5%.
- the viscosity of the composition of the present invention is kept low and a composition having a high response speed is required, it is preferable to lower the lower limit value and raise the upper limit value. Furthermore, when the composition of the present invention is required to maintain a high Tni and prevent the occurrence of seizure, it is preferable to increase the above lower limit value and the upper limit value. When it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to lower the lower limit value and lower the upper limit value.
- More preferable forms in (C1) can be represented by the following general formulas (C1a) to (C1h).
- R f and R g are each independently a linear alkyl group having 1 to 7 carbon atoms, a linear 1-alkenyl group having 2 to 7 carbon atoms, or a group having 4 to 7 carbon atoms.
- at least one of them represents a linear alkyl group having 1 to 7 carbon atoms, a linear 1-alkenyl group having 2 to 7 carbon atoms, or a linear 3-alkenyl group having 4 to 7 carbon atoms.
- the corresponding R f excludes the 1-alkenyl group and alkoxyl group
- the corresponding R g is 1-alkenyl group and alkoxyl. Excluding groups.
- Ring G1 and Ring H1 are each independently substituted with a trans-1,4-cyclohexylene group, a transdecahydronaphthalene-trans-2,6-diyl group, 1 to 2 fluorine atoms or a methyl group.
- Ring G2 and Ring H2 are each independently substituted with a trans-1,4-cyclohexylene group, a transdecahydronaphthalene-trans-2,6-diyl group, 1 to 2 fluorine atoms or a methyl group.
- 1,4-phenylene group naphthalene-2,6-diyl group optionally substituted by one or more fluorine atoms, tetrahydronaphthalene-2 optionally substituted by 1 to 2 fluorine atoms, Represents a 6-diyl group, but in each compound, a transdecahydronaphthalene-trans-2,6-diyl group, a naphthalene-2,6-diyl group optionally substituted by one or more fluorine atoms, 1 to
- the number of tetrahydronaphthalene-2,6-diyl groups which may be substituted by two fluorine atoms is preferably 1 or less.
- the other ring is a trans-1,4-cyclohexylene group or a 1,4-phenylene group optionally substituted by 1 to 2 fluorine atoms or a methyl group.
- Ring G3 and Ring H3 are each independently a 1,4-phenylene group optionally substituted by 1 to 2 fluorine atoms or a methyl group, and naphthalene-2 optionally substituted by one or more fluorine atoms , 6-diyl group, tetrahydronaphthalene-2,6-diyl group optionally substituted by 1 or 2 fluorine atoms, naphthalene optionally substituted by one or more fluorine atoms in each compound
- the number of the -2,6-diyl group and the number of tetrahydronaphthalene-2,6-diyl group which may be substituted by 1 or 2 fluorine atoms is preferably 1 or less.
- More preferable forms in (C2) can be represented by the following general formulas (C2a) to (C2g).
- ring G1, ring G2, ring G3, ring H1, ring H2, and ring H3 have the same meanings as described above, ring I1 is the same as ring G1, ring I2 is the same as ring G2, and ring I3 is the same as ring G3. Represents meaning.
- the number of pyrimidine-2,5-diyl groups or pyridine-2,5-diyl groups is preferably one or less, and the other ring in this case is a trans-1,4-cyclohexylene group or 1 to 2 groups.
- ring G1, ring G2, ring H1, ring H2, ring I1 and ring I2 represent the above-mentioned meanings
- ring J1 represents the same meaning as ring G1 or ring J2, respectively.
- a transdecahydronaphthalene-trans-2,6-diyl group, a naphthalene-2,6-diyl group optionally substituted by one or more fluorine atoms, and 1 to 2 fluorine atoms A tetrahydronaphthalene-2,6-diyl group optionally substituted by 1, a 1,4-cyclohexenylene group optionally substituted by a fluorine atom, a 1,3-dioxane-trans-2,5-diyl group
- the number of pyrimidine-2,5-diyl groups or pyridine-2,5-diyl groups is preferably one or less, and the other ring in this case is
- composition of the present invention preferably does not contain a compound having a structure in which heteroatoms such as oxygen atoms such as a peracid (—CO—OO—) structure are bonded in the molecule.
- the content of the compound having a carbonyl group is preferably 5% or less, more preferably 3% or less with respect to the total mass of the composition. Preferably, it is more preferably 1% or less, and most preferably not substantially contained.
- the content of the compound substituted with chlorine atoms is preferably 15% or less, preferably 10% or less, based on the total mass of the composition. % Or less, preferably 5% or less, more preferably 3% or less, and still more preferably substantially not contained.
- the content of a compound in which all the ring structures in the molecule are 6-membered rings is 80% relative to the total mass of the composition. % Or more, more preferably 90% or more, still more preferably 95% or more, and the composition is composed only of a compound in which all of the ring structures in the molecule are all 6-membered rings. Most preferably.
- the content of the compound having a cyclohexenylene group as a ring structure, and the content of the compound having a cyclohexenylene group as the total mass of the composition is preferably 10% or less, preferably 8% or less, more preferably 5% or less, preferably 3% or less, and still more preferably not contained.
- the content of a compound having a 2-methylbenzene-1,4-diyl group in the molecule, in which a hydrogen atom may be substituted with a halogen may be reduced.
- the content of the compound having a 2-methylbenzene-1,4-diyl group in the molecule is preferably 10% or less, more preferably 8% or less, based on the total mass of the composition. It is more preferably 5% or less, further preferably 3% or less, and still more preferably substantially not contained.
- substantially not contained in the present application means that it is not contained except for an unintentionally contained product.
- the alkenyl group when the compound contained in the composition of the first embodiment of the present invention has an alkenyl group as a side chain, when the alkenyl group is bonded to cyclohexane, the alkenyl group has 2 to 5 carbon atoms.
- the alkenyl group is bonded to benzene, the number of carbon atoms of the alkenyl group is preferably 4 to 5, and the unsaturated bond of the alkenyl group and benzene are directly bonded. Preferably not.
- an antioxidant examples include hydroquinone derivatives, nitrosamine polymerization inhibitors, hindered phenol antioxidants, and more specifically, tert-butyl hydroquinone, methyl hydroquinone, manufactured by Wako Pure Chemical Industries, Ltd.
- IRGANOX1010 “IRGANOX1035”, “IRGANOX1076”, “IRGANOX1098”, “IRGANOX1135”, “IRGANOX1330”, “IRGANOX1425”, “IRGANOX1520”, “IRGANOX1726”, BASF Corporation “IRGANOX245”, “IRGANOX259”, “IRGANOX3114”, “IRGANOX3790”, “IRGANOX5057”, “IRGANOX565”, etc. Is given.
- the addition amount of the antioxidant is preferably 0.01 to 2.0% by mass and more preferably 0.05 to 1.0% by mass with respect to the polymerizable liquid crystal composition.
- a UV absorber In order to enhance the stability of the liquid crystal composition in the present invention, it is preferable to add a UV absorber.
- a UV absorber those having excellent absorption ability of ultraviolet rays having a wavelength of 370 nm or less and little absorption of visible light having a wavelength of 400 nm or more are preferable from the viewpoint of good liquid crystal display properties.
- hindered phenol compounds hydroxybenzophenone compounds, benzotriazole compounds, salicylic acid ester compounds, benzophenone compounds, cyanoacrylate compounds, nickel complex compounds, triazine compounds, and hinders
- dephenol-based compounds include 2,6-di-tert-butyl-p-cresol, pentaerythrityl-tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], N, N′-hexamethylenebis (3,5-di-tert-butyl-4-hydroxy-hydrocinnamide), 1,3,5-trimethyl-2,4,6-tris (3,5-di-tert-butyl- 4-hydroxybenzyl) benzene, tris- (3,5-di-) ert- butyl-4-hydroxybenzyl) - isocyanurate.
- benzotriazole compounds include 2- (2′-hydroxy-5′-methylphenyl) benzotriazole, 2,2-methylenebis (4- (1,1,3,3-tetramethylbutyl) -6- (2H -Benzotriazol-2-yl) phenol), (2,4-bis- (n-octylthio) -6- (4-hydroxy-3,5-di-tert-butylanilino) -1,3,5-triazine, Triethylene glycol-bis [3- (3-tert-butyl-5-methyl-4-hydroxyphenyl) propionate], N, N′-hexamethylenebis (3,5-di-tert-butyl-4-hydroxy- Hydrocinnamide), 1,3,5-trimethyl-2,4,6-tris (3,5-di-tert-butyl-4-hydroxybenzyl) benzene, (2′-hydroxy-3 ′, 5′-di-tert-butylphenyl) -5-chlorobenzotri
- the measured characteristics are as follows.
- TNI Nematic phase-isotropic liquid phase transition temperature
- T ⁇ N Phase transition temperature at which nematic phase is obtained
- ⁇ n Refractive index anisotropy at 298K no:
- ⁇ Dielectric anisotropy at 298K
- Vth Voltage in which liquid crystal is sealed in a TN cell having a thickness of 8.5 microns, and the transmittance changes by 10% under a 298K crossed Nicol polarizing plate.
- VHR Voltage holding ratio (%) at 333 K under conditions of frequency 60 Hz and applied voltage 5 V
- VHR TEG (test element group) for evaluation of electro-optical properties in which a composition sample was sealed was held in a thermostatic bath at 130 ° C. for 1 hour, and then measured under the same conditions as in the VHR measurement method described above.
- the liquid crystal composition was vacuum-injected into a liquid crystal cell for TN (cell gap 8.3 ⁇ m) and sealed with a UV curable resin (Three Bond 3026) to prepare a liquid crystal cell.
- initial The sample whose current value was measured immediately after the liquid crystal cell was created was taken as an initial sample (hereinafter abbreviated as initial).
- UV UV irradiation sample
- heating A sample obtained by heating the liquid crystal cell at 80 ° C. for 350 hours using an oven was used as a heated sample (hereinafter abbreviated as heating).
- the current value was calculated by At this time, three liquid crystal cells were prepared under each condition, the current values were measured, and the current values obtained from the three cells were averaged to obtain a current value. did.
- Burn-in The burn-in evaluation of the liquid crystal display element is performed until the afterimage of the fixed pattern reaches an unacceptable afterimage level when displaying the predetermined fixed pattern in the display area for an arbitrary test time and then displaying the entire screen uniformly.
- the test time was measured. 1) The test time referred to here indicates the display time of the fixed pattern, and the longer this time is, the more the afterimage is suppressed and the higher the performance. 2)
- the unacceptable afterimage level is a level at which an afterimage that is rejected in the shipment acceptance / rejection determination is observed.
- Sample A 1000 hours
- Sample B 500 hours
- Sample C 200 hours
- Sample D 100 hours Performance is A>B>C> D.
- Drop marks The evaluation of the drop marks of the liquid crystal display device was performed by visual observation of the drop marks that appeared white when the entire surface was displayed in black by the following five-step evaluation.
- Process suitability is determined by dropping a liquid crystal 50pL at a time, "0 to 100 times, 101 to 200 times, 201 to 300 times, " 100 times at a time using a constant volume metering pump in the ODF process. The mass of the liquid crystal for each 100 drops was measured and evaluated by the number of drops at which the mass variation reached a size that could not be adapted to the ODF process.
- Low temperature storage For storage stability evaluation at low temperature, after preparing the composition, 0.5 g of the composition was weighed into a 1 mL sample bottle and stored in a temperature controlled test tank at -25 ° C. for 240 hours. Generation
- Examples 1 to 3, Comparative Examples 1 to 3 By using the liquid crystal composition of the present invention and the composition as a second panel, applying an epoxy-based polymerizable composition, overlapping with a separately prepared first panel, and irradiating UV light from the second panel side Then, a liquid crystal display device was produced and its physical property values were measured.
- liquid crystal display element of the present invention can switch between 2D and 3D display.
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Abstract
Description
Ri2は水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、フルオロメトキシ基、ジフルオロメトキシ基、トリフルオロメトキシ基、2,2,2-トリフルオロエチル基又は炭素原子数1~8のアルキル基を表し、該アルキル基中の1個又は非隣接の2個以上の-CH2-はそれぞれ独立して-CH=CH-、-C≡C-、-O-、-CO-、-COO-又は-OCO-によって置換されていてもよく、
ni1及びni2はそれぞれ独立して、0、1、2又は3を表すが、ni1+ni2は0、1、2又は3を表し、
Ai1及びAi2はそれぞれ独立して、
(a) 1,4-シクロヘキシレン基(この基中に存在する1個の-CH2-又は隣接していない2個以上の-CH2-は-O-又は-S-に置き換えられてもよい。)及び
(b) 1,4-フェニレン基(この基中に存在する1個の-CH=又は隣接していない2個以上の-CH=は-N=に置き換えられてもよい。)
からなる群より選ばれる基を表し、上記の基(a)及び基(b)上の水素原子はそれぞれ独立してシアノ基、フッ素原子又は塩素原子で置換されていても良く、
Zi1及びZi2はそれぞれ独立して単結合、-CH2CH2-、-(CH2)4-、-OCH2-、-CH2O-、-OCF2-、-CF2O-、-COO-又は-OCO-を表し、
ni1が2、3又は4であってAi1が複数存在する場合は、それらは同一であっても異なっていても良く、ni1が2、3又は4であってZi1が複数存在する場合は、それらは同一であっても異なっていても良く、ni2が2、3又は4であってAi2が複数存在する場合は、それらは同一であっても異なっていても良く、ni2が2、3又は4であってZi2が複数存在する場合は、それらは同一であっても異なっていても良く、
Xi1~Xi8はそれぞれ独立して水素原子、塩素原子又はフッ素原子を表す。)
一般式(i)中、Ri1は、炭素原子数1~8のアルキル基、炭素原子数1~8のアルコキシ基、炭素原子数2~8のアルケニル基又は炭素原子数2~8のアルケニルオキシ基が好ましく、炭素原子数1~5のアルキル基、炭素原子数1~5のアルコキシ基、炭素原子数2~5のアルケニル基又は炭素原子数2~5のアルケニルオキシ基が好ましく、炭素原子数1~5のアルキル基又は炭素原子数2~5のアルケニル基が更に好ましく、炭素原子数2~5のアルキル基又は炭素原子数2~3のアルケニル基が更に好ましい。
Xi9~Xi12はそれぞれ独立して一般式(i)におけるXi1と同じ意味を表し、
ni3は0、1、2又は3を表すが、ni1+ni3は0、1又は2を表す。)
一般式(i-1)におけるRi1、Ri2、ni1、Ai1、Ai2、Zi1、Zi2及びXi1~Xi8は一般式(i)におけるRi1、Ri2、ni1、Ai1、Ai2、Zi1、Zi2及びXi1~Xi8と同じ意味である。
La、Lb及びLcは連結基であって、それぞれ独立的に単結合、エチレン基(-CH2CH2-)、1,2-プロピレン基(-CH(CH3)CH2-及び-CH2CH(CH3)-)、1,4-ブチレン基、-COO-、-OCO-、-OCF2-、-CF2O-、-CH=CH-、-CH=CF-、-CF=CH-、-CF=CF-又は-CH=NN=CH-を表すが、単結合、エチレン基、1,4-ブチレン基、-COO-、-OCF2-、-CF2O-、-CF=CF-又は-C≡C-が好ましく、単結合又はエチレン基が特に好ましい。また、(A2)においてはその少なくとも1個が、(A3)においてはその少なくとも2個が単結合を表すことが好ましい。
さらに好ましくは、下記化合物である。
さらに好ましくは、下記化合物である。
本発明の組成物の総量に対しての一般式(i)、一般式(A1)から(A3)、一般式(B1)から(B3)及び一般式(C1)から(C3)で表される化合物の合計の好ましい含有量の下限値は、80%であり、85%であり、88%であり、90%であり、92%であり、93%であり、94%であり、95%であり、96%であり、97%であり、98%であり、99%であり、100%である。好ましい含有量の上限値は、100%であり、99%であり、98%であり、95%である。
T→N :ネマチック相となる相転移温度
Δn :298Kにおける屈折率異方性
no :
Δε :298Kにおける誘電率異方性
ε⊥ :
γ1 :298Kにおける回転粘度
Vth :厚さ8.5ミクロンのTNセルに液晶を封入し、298K、クロスニコル偏光板下において透過率が10%変化する電圧。
耐熱試験後VHR:組成物サンプルを封入した電気光学特性評価用TEG(テスト・エレメント・グループ)を130℃の恒温槽中に1時間保持した後、上述のVHR測定方法と同条件で測定した。
液晶組成物を、TN用液晶セル(セルギャップ8.3μm)に真空注入し、UV硬化性樹脂(スリーボンド社製、Three Bond 3026)で封止し、液晶セルを作製した。
液晶表示素子の焼き付き評価は、表示エリア内に所定の固定パターンを任意の試験時間表示させた後に、全画面均一な表示を行ったときの固定パターンの残像が、許容できない残像レベルに達するまでの試験時間を計測した。
1)ここで言う試験時間とは固定パターンの表示時間を示し、この時間が長いほど残像の発生が抑制されており、性能が高いことを示している。
2)許容できない残像レベルとは、出荷合否判定で不合格となる残像が観察されるレベルである。
例)
サンプルA:1000時間
サンプルB:500時間
サンプルC:200時間
サンプルD:100時間
性能は、A>B>C>Dである。
液晶表示装置の滴下痕の評価は、全面黒表示した場合における白く浮かび上がる滴下痕を目視にて以下の5段階評価で行った。
4:滴下痕ごく僅かに有るも許容できるレベル(良)
3:滴下痕僅かに有り、合否判定のボーダーラインレベル(条件付で可)
2:滴下痕有り許容できないレベル(不可)
1:滴下痕有りかなり劣悪(悪)
プロセス適合性 :
プロセス適合性は、ODFプロセスにおいて、定積計量ポンプを用いて、液晶を1回に50pLずつ「0~100回、101~200回、201~300回、・・・・」と100回ずつ滴下したときの各100回滴下分の液晶の質量を計測し、質量のバラつきがODFプロセスに適合できない大きさに達した滴下回数で評価した。
滴下回数が多いほど長時間にわたって安定的に滴下可能であり、プロセス適合性が高いといえる。
例)
サンプルA:95000回
サンプルB:40000回
サンプルC:100000回
サンプルD:10000回
性能は、C>A>B>Dである。
低温での保存性評価は、組成物を調製後、1mLのサンプル瓶に組成物を0.5g秤量し、これを-25℃の温度制御式試験槽の中で240時間保存して目視にて組成物からの析出物の発生を観察し、析出物が観察されたときの試験時間を計測した。析出発生までの試験時間が長いほど低温での保存性が良好であるといえる。
液晶材料の揮発性評価は、真空攪拌脱泡ミキサーの運転状態をストロボスコープを用いて観察し、液晶材料の発泡を目視により観察することによって行った。具体的には、容量2.0Lの真空攪拌脱泡ミキサーの専用容器に組成物を0.8kg入れ、4kPaの脱気下、公転速度15S-1、自転速度7.5S-1で真空攪拌脱泡ミキサーを運転し、発泡が始まるまでの時間を計測した。
発泡が始まるまでの時間が長いほど揮発しにくく、製造装置を汚染する可能性が低いので、高性能であることを示す。
例)
サンプルA:200秒
サンプルB:45秒
サンプルC:60秒
サンプルD:15秒
性能は、A>C>B>Dである。
尚、実施例において化合物の記載について以下の略号を用いる。
(環構造)
(側鎖構造及び連結構造)
本願発明の液晶組成物及び該組成物を使用し第2パネルとし、エポキシ系の重合性組成物を塗布し、別途用意した第1パネルと重ね、第2パネル側よりUV光を照射することにより、液晶表示素子を作製し、その物性値を測定した。
同様に下記比較も行った。
Claims (7)
- 液晶層及びカラーフィルターを有する第1パネルと、液晶層を有する第2パネルと、第1及び第2パネル間に重合体を有する液晶表示素子。
- 請求項1記載の重合体が重合性組成物にエネルギー線を照射することにより硬化した重合体である液晶表示素子。
- 第2パネルの液晶層が一般式(i)で表される化合物を1種又は2種以上含有する請求項1又は2記載の液晶表示素子。
Ri2は水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、フルオロメトキシ基、ジフルオロメトキシ基、トリフルオロメトキシ基、2,2,2-トリフルオロエチル基又は炭素原子数1~8のアルキル基を表し、該アルキル基中の1個又は非隣接の2個以上の-CH2-はそれぞれ独立して-CH=CH-、-C≡C-、-O-、-CO-、-COO-又は-OCO-によって置換されていてもよく、
ni1及びni2はそれぞれ独立して、0、1、2、3又は4を表すが、ni1+ni2は0、1、2又は3を表し、
Ai1及びAi2はそれぞれ独立して、
(a) 1,4-シクロヘキシレン基(この基中に存在する1個の-CH2-又は隣接していない2個以上の-CH2-は-O-又は-S-に置き換えられてもよい。)及び
(b) 1,4-フェニレン基(この基中に存在する1個の-CH=又は隣接していない2個以上の-CH=は-N=に置き換えられてもよい。)
からなる群より選ばれる基を表し、上記の基(a)及び基(b)上の水素原子はそれぞれ独立してシアノ基、フッ素原子又は塩素原子で置換されていても良く、
Zi1及びZi2はそれぞれ独立して単結合、-CH2CH2-、-(CH2)4-、-OCH2-、-CH2O-、-OCF2-、-CF2O-、-COO-又は-OCO-を表し、
ni1が2、3又は4であってAi1が複数存在する場合は、それらは同一であっても異なっていても良く、ni1が2又は3であってZi1が複数存在する場合は、それらは同一であっても異なっていても良く、ni2が2、3又は4であってAi2が複数存在する場合は、それらは同一であっても異なっていても良く、ni2が2、3又は4であってZi2が複数存在する場合は、それらは同一であっても異なっていても良く、
Xi1~Xi8はそれぞれ独立して水素原子、塩素原子又はフッ素原子を表す。) - 第1パネルの液晶層が更に、一般式(A1)から(A3)
環A、環B及び環Cはそれぞれ独立的にトランス-1,4-シクロへキシレン基、トランスデカヒドロナフタレン-トランス-2,6-ジイル基、1個以上のフッ素原子により置換されていてもよい1,4-フェニレン基、1個以上のフッ素原子により置換されていてもよいナフタレン-2,6-ジイル基、1個以上のフッ素原子により置換されていてもよいテトラヒドロナフタレン-2,6-ジイル基、フッ素原子により置換されていてもよい1,4-シクロヘキセニレン基、1,3-ジオキサン-トランス-2,5-ジイル基、ピリミジン-2,5-ジイル基またはピリジン-2,5-ジイル基を表し、
La、Lb及びLcはそれぞれ独立的に単結合、エチレン基(-CH2CH2-)、1,2-プロピレン基(-CH(CH3)CH2-及び-CH2CH(CH3)-)、1,4-ブチレン基、-COO-、-OCO-、-OCF2-、-CF2O-、-CH=CH-、-CH=CF-、-CF=CH-、-CF=CF-、-C≡C-又は-CH=NN=CH-を表し、
環Zは一般式(La)~(Lc)で表される置換基を表し、
Paはフッ素原子、塩素原子、トリフルオロメトキシ基、ジフルオロメトキシ基、トリフルオロメチル基又はジフルオロメチル基あるいは2個以上のフッ素原子により置換された炭素原子数2又は3のアルコキシル基、アルキル基、アルケニル基又はアルケニルオキシ基を表し、
一般式(A1)から(A3)で表される化合物を組み合わせて使用する場合、異なる分子中の同一の選択肢(環AやLa等)は同一の置換基を表しても、異なる置換基を表してもよい。
なお、一般式(A1)から(A3)においては本発明の一般式(i)を除く。)
で表される化合物を1種又は2種以上含有する請求項1から4のいずれか一項に記載の液晶表示素子。 - 第1パネルの液晶層が更に、一般式(B1)から(B3)
環D、環E及び環Fはそれぞれ独立的にトランス-1,4-シクロへキシレン基、トランスデカヒドロナフタレン-トランス-2,6-ジイル基、1個以上のフッ素原子により置換されていてもよい1,4-フェニレン基、1個以上のフッ素原子により置換されていてもよいナフタレン-2,6-ジイル基、1個以上のフッ素原子により置換されていてもよいテトラヒドロナフタレン-2,6-ジイル基、フッ素原子により置換されていてもよい1,4-シクロヘキセニレン基、1,3-ジオキサン-トランス-2,5-ジイル基、ピリミジン-2,5-ジイル基又はピリジン-2,5-ジイル基を表し、
Ld、Le及びLfはそれぞれ独立的に単結合、エチレン基(-CH2CH2-)、1,2-プロピレン基(-CH(CH3)CH2-及び)-CH2CH(CH3)-)、1,4-ブチレン基、-COO-、-OCO-、-OCF2-、-CF2O-、-CH=CH-、-CH=CF-、-CF=CH-、-CF=CF-、-C≡C-、-OCH2-、-CH2O-又は-CH=NN=CH-を表し、
環Yは芳香環であり以下の一般式(Ld)~(Lf)で表される置換基を表し、
末端基Pbはシアノ基(-CN)、シアナト基(-OCN)又は-C≡CCNを表し、
一般式(B1)から(B3)で表される化合物を組み合わせて使用する場合、異なる分子中の同一の選択肢(環DやLd等)は同一の置換基を表しても、異なる置換基を表してもよく、
一般式(B1)から(B3)においては本発明の一般式(i)を除く。)
で表される化合物を1種又は2種以上含有する請求項1から5のいずれか一項に記載の液晶表示素子。 - 第1パネルの液晶層が更に、一般式(C1)から(C3)
環G、環H、環I及び環Jはそれぞれ独立的に、トランス-1,4-シクロへキシレン基、トランスデカヒドロナフタレン-トランス-2,6-ジイル基、1~2個のフッ素原子あるいはメチル基により置換されていてもよい1,4-フェニレン基、1個以上のフッ素原子により置換されていてもよいナフタレン-2,6-ジイル基、1~2個のフッ素原子により置換されていてもよいテトラヒドロナフタレン-2,6-ジイル基、1~2個のフッ素原子により置換されていてもよい1,4-シクロヘキセニレン基、1,3-ジオキサン-トランス-2,5-ジイル基、ピリミジン-2,5-ジイル基又はピリジン-2,5-ジイル基を表し、
Lg、Lh及びLiはそれぞれ独立的に単結合、エチレン基(-CH2CH2-)、1,2-プロピレン基(-CH(CH3)CH2-及び)-CH2CH(CH3)-)、1,4-ブチレン基、-COO-、-OCO-、-OCF2-、-CF2O-、-CH=CH-、-CH=CF-、-CF=CH-、-CF=CF-、-C≡C-又は-CH=NN=CH-を表し、
なお一般式(C1)から(C3)で表される化合物を組み合わせて使用する場合、異なる分子中の同一の選択肢(環GやLg等)は同一の置換基を表しても、異なる置換基を表してもよく、
一般式(C1)から(C3)においては本発明の一般式(A1)から(A3)、(B1)から(B3)、(i)を除く。)
で表される化合物を1種又は2種以上含有する請求項1から6のいずれか一項に記載の液晶表示素子。
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US15/580,373 US10975304B2 (en) | 2015-07-02 | 2016-06-28 | Liquid crystal composition and liquid crystal display device using the same |
CN201680026836.6A CN107533263B (zh) | 2015-07-02 | 2016-06-28 | 液晶组合物及使用其的液晶显示元件 |
KR1020177033934A KR20180026378A (ko) | 2015-07-02 | 2016-06-28 | 액정 조성물 및 이것을 사용한 액정 표시 소자 |
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CN112979471A (zh) * | 2019-12-16 | 2021-06-18 | 捷恩智株式会社 | 化合物、液晶组合物及液晶显示元件 |
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CN111040778B (zh) * | 2018-10-11 | 2023-08-04 | 江苏和成显示科技有限公司 | 一种宽温液晶组合物、宽温聚合物分散液晶组合物及宽温聚合物分散液晶薄膜 |
CN111040775B (zh) * | 2018-10-11 | 2023-09-08 | 江苏和成显示科技有限公司 | 一种宽温液晶组合物、宽温聚合物分散液晶组合物及宽温聚合物分散液晶薄膜 |
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US20180134961A1 (en) | 2018-05-17 |
JP6213798B2 (ja) | 2017-10-18 |
JPWO2017002789A1 (ja) | 2017-06-29 |
TW201713752A (zh) | 2017-04-16 |
CN107533263A (zh) | 2018-01-02 |
KR20180026378A (ko) | 2018-03-12 |
US10975304B2 (en) | 2021-04-13 |
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