TW201432032A - Liquid crystal composition, and liquid crystal display element using same - Google Patents

Abstract

The present invention relates to: a nematic liquid crystal composition which has a positive dielectric anisotropy ([increment][epsilon]), and which is useful as a liquid crystal display material and a liquid crystal display element using same. This liquid crystal composition has a liquid crystal phase in a broad temperature range, a low viscosity, excellent solubility at low temperatures, a high specific resistance and voltage retention rate, and is stable with respect to heat and light. Accordingly, by using said liquid crystal composition, an IPS-type, TN-type, or other type liquid crystal display element, which exhibits excellent display quality, and with which display defects such as ghosting and drip marks are inhibited, can be provided in high yields.

Description

Liquid crystal composition and liquid crystal display element using the same

The present invention relates to a nematic liquid crystal composition which exhibits a positive dielectric anisotropy (Δε) which is useful as a liquid crystal display material, and a liquid crystal display element using the same.

The liquid crystal display element is started with a clock and a calculator, and is gradually used in various measuring machines, automobile panels, word processors, electronic notebooks, printers, computers, televisions, clocks, advertisement display boards, and the like. As a liquid crystal display method, a TN (Twisted Nematic) type, an STN (Super Twisted Nematic) type, and a vertical alignment type using a TFT (Thin Film Transistor) or IPS (In-Plane Switching) type. The liquid crystal composition used for the liquid crystal display elements is required to be stable to external stimuli such as moisture, air, heat, light, etc., and the liquid crystal phase is displayed in a temperature range as wide as possible at room temperature. Viscous and low drive voltage. Further, the liquid crystal composition is composed of several to several tens of compounds in order to set the dielectric anisotropy (Δε) and/or the refractive index anisotropy (Δn) to an optimum value for each display element. .

A liquid crystal composition having a negative Δ ε is used for a vertical alignment (VA) type display, and a liquid crystal composition having a positive Δ ε is used for a horizontal alignment type display such as a TN type, an STN type, or an IPS (In-Plane Switching type). Further, it has been reported that a liquid crystal composition having positive Δ ε is vertically aligned when no voltage is applied, and a display method is employed by applying a transverse electric field, and the necessity of a liquid crystal composition having a positive Δ ε is further improved. On the other hand, all driving methods require low voltage. Drive, high speed response, wide operating temperature range. That is, it is required that Δε is positive and the absolute value is large, the viscosity (η) is small, and the higher nematic phase-isotropic liquid phase transition temperature (Tni). Further, it is necessary to adjust the Δn matching cell gap of the liquid crystal composition to an appropriate range in accordance with the setting of Δn and the cell gap (d), that is, Δn × d. In addition, when a liquid crystal display element is used for a television or the like, high-speed responsiveness is emphasized, and thus a liquid crystal composition having a small rotational viscosity (γ1) is required.

The composition of the liquid crystal composition for the purpose of high-speed responsiveness is, for example, a compound represented by the formula (A-1) or (A-2) in which a liquid crystal compound having a positive Δ ε is combined, and a Δε is neutral. A liquid crystal composition used for (B) of the liquid crystal compound. It is widely known in the field of the liquid crystal composition that the liquid crystal composition is characterized in that the liquid crystal compound having a positive Δ ε has a -CF ₂ O- structure, and the liquid crystal compound having a negative Δ ε has an alkenyl group. (Patent Documents 1 to 4)

On the other hand, the use of the liquid crystal display element has been expanded, and the method of use and the method of manufacturing have also been largely changed. In order to cope with such changes, it is required to optimize characteristics other than the previously known basic physical property values. In other words, since a liquid crystal display device using a liquid crystal composition widely uses a VA type or an IPS type or the like, a display element having a size of 50 or more and a very large size is used in practical use. As the size of the substrate is increased, the method of injecting the liquid crystal composition into the substrate has been the mainstream of the injection method from the previous vacuum injection method to the ODF (One Drop Fill) method, but the liquid crystal composition is dropped on the substrate. The drip marks cause surface deterioration of the problem of deterioration in display quality. and then, In the manufacturing process of the liquid crystal display element using the ODF method, it is necessary to drip the optimum liquid crystal injection amount in accordance with the size of the liquid crystal display element. When the amount of injection is increased from the optimum value, the balance between the refractive index of the liquid crystal display element designed in advance or the driving electric field is lost, and display defects such as spots or poor contrast are generated. In particular, small liquid crystal display elements which are mostly used in recently popular smart phones have an optimum liquid crystal injection amount, and it is difficult to control the offset from the optimum value within a fixed range. Therefore, in order to keep the yield of the liquid crystal display element high, for example, the following performance is also required: the influence of the rapid pressure change or impact in the dropping device generated when the liquid crystal is dropped is small, and it can be stably maintained over a long period of time. Continuously add liquid crystal.

In this way, the liquid crystal composition used for driving the liquid crystal display element by the active matrix driven by the TFT element or the like is required to maintain high-speed response performance or the like as a characteristic or performance required for the liquid crystal display element, and has a higher ratio which has been previously emphasized. The resistance value or the higher voltage holding ratio, or the property of being stable to external stimuli such as light or heat, is also developed in consideration of the manufacturing method of the liquid crystal display element.

[Patent Document 1] Japanese Patent Laid-Open No. 2008-037918

[Patent Document 2] Japanese Patent Laid-Open No. 2008-038018

[Patent Document 3] Japanese Patent Laid-Open No. 2010-275390

[Patent Document 4] Japanese Special Open 2011052120

The object of the present invention is to provide a liquid crystal composition which is positive in Δε and has a relatively wide temperature range of liquid crystal phase, which has low viscosity, good solubility at low temperatures, and specific resistance or voltage retention. The rate is higher, it is more stable to heat or light, and by using it, it provides an IPS type which is excellent in display quality and is difficult to produce display defects such as afterimages or drip marks. A liquid crystal display element such as a TN type.

The present inventors have studied various liquid crystal compounds and various chemical substances, and found that the above problems can be solved by combining specific liquid crystal compounds, thereby completing the present invention.

That is, the present invention provides a liquid crystal composition having positive dielectric anisotropy and comprising: component (A), which contains formula (26.2)

The dielectric property of the compound represented is a positive component; and the component (B) contains a formula (2.3)

The dielectric anisotropy of the compound represented by the compound is more than -2 and less than +2, and the dielectric property is a neutral component; further, a liquid crystal display element using the liquid crystal composition is provided.

The liquid crystal composition having positive dielectric anisotropy of the present invention can obtain very low viscosity, has good solubility at low temperature, and has little change in specific resistance or voltage retention due to heat or light, so the practicality of the product. Higher, liquid crystal display elements such as the IPS type or FFS type can achieve high speed response. Moreover, since the performance can be stably exhibited in the manufacturing process of the liquid crystal display element, display defects caused by the steps can be suppressed, and it can be manufactured at a high yield, which is very useful.

100‧‧‧Substrate a

102‧‧‧TFT layer

103‧‧‧pixel electrode

104‧‧‧passivation film

105‧‧‧Alignment film a

200‧‧‧substrate b

201‧‧‧Flat film (top coat)

202‧‧‧Black matrix

203‧‧‧Color filters

204‧‧‧Transparent electrode

205‧‧‧Alignment film b

301‧‧‧ sealing material

302‧‧‧ Column spacers

303‧‧‧Liquid layer

304‧‧‧ Protrusion

401‧‧‧ Column spacer pattern mask

402‧‧‧ Column spacer forming composition

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a cross-sectional view showing a liquid crystal display element of the present invention. Call the substrate with 100~105 The "backplane" is called a "front panel" with a substrate of 200 to 205.

Fig. 2 is a view showing an exposure processing step of forming a pattern for a columnar spacer formed on a black matrix as a mask pattern.

The liquid crystal composition having positive dielectric anisotropy of the present invention contains the component (A) which is a component having positive dielectric properties. Component (A) is composed of a compound having a dielectric anisotropy of 2 or more. Further, the dielectric anisotropy of the compound is a value extrapolated from the measured value of the dielectric anisotropy of the composition prepared by adding the liquid crystal composition having a dielectric anisotropy of about 0 at 25 °C.

The component (A) of the liquid crystal composition of the present invention contains the formula (26.2)

The compound represented. In the liquid crystal composition of the present invention, the content of the compound represented by the formula (26.2) of the component (A) is preferably 2% by mass or more, more preferably 4% by mass based on the total amount of the liquid crystal composition of the present invention. % or more is more preferably 10% by mass or more, further preferably 14% by mass or more, further preferably 16% by mass or more, and particularly preferably 21% by mass or more. Moreover, it is preferable to limit the maximum ratio to 40% by mass or less, more preferably 35% by mass or less, and still more preferably 30% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is 25 mass% or less.

The liquid crystal composition of the present invention can contain the general formula (X) in the component (A) having a positive dielectric property.

[Chemical 3]

(wherein, X ¹⁰¹ to X ¹⁰⁴ each independently represent a fluorine atom or a hydrogen atom, Y ¹⁰ represents a fluorine atom, a chlorine atom, -OCF ₃ , Q ¹⁰ represents a single bond or -CF ₂ O-, and R ¹⁰ represents a carbon atom A alkyl group of 1 to 5, and A ¹⁰¹ and A ¹⁰² each independently represent a 1,4-cyclohexylene group, a 1,4-phenylene group, or

One or two or more compounds shown. The compound represented by the formula (X) not only enlarges the liquid crystal temperature region, but also improves electrical reliability, reduces display unevenness, and further has the effect of improving the viscosity of the entire composition by using it as a constituent component, and is therefore preferably used for Liquid crystal composition. The compound which can be combined with the compound represented by the formula (X) is not particularly limited, and in view of solubility at low temperature, transfer temperature, electrical reliability, birefringence and the like, it is preferred to combine one to three kinds, and further Jia is a combination of one to four or more.

The compound represented by the formula (X) used in the liquid crystal composition of the present invention has a compound represented by the formula (X-1).

(wherein, X ¹⁰¹ to X ¹⁰³ each independently represent a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms)

The compound which can be combined is not particularly limited, and it is preferably one type or two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

Further, the compound represented by the formula (X-1) used in the liquid crystal composition of the present invention may, for example, be a compound represented by the formula (X-1-1).

(wherein R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms)

The compound which can be combined is not particularly limited, and it is preferably one type or two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

Further, the compound represented by the formula (X-1-1) used in the liquid crystal composition of the present invention may specifically be a compound represented by the formula (36.1) to the formula (36.4), and preferably contains a compound. (36.1) and/or a compound represented by formula (36.2).

[Chemical 6]

In the liquid crystal composition of the present invention, when the compound represented by the formula (36.1) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 2% by mass or more, and more preferably 3% by mass or more. Moreover, it is preferable to limit the maximum ratio to 10% by mass or less, more preferably 6% by mass or less, and still more preferably 4% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is 3% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (36.2) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 2% by mass or more, and more preferably 3% by mass or more. Moreover, it is preferable to limit the maximum ratio to 10% by mass or less, more preferably 6% by mass or less, and still more preferably 4% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is 3% by mass or less.

Further, as the compound represented by the formula (X-1) used in the liquid crystal composition of the present invention, the compound represented by the formula (X-1-2) is present.

(wherein R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms)

The compound which can be combined is not particularly limited, considering the solubility at low temperature, and the conversion The temperature, electrical reliability, birefringence, and the like are preferably one to two or more, more preferably one to three or more.

Further, the compound represented by the formula (X-1-2) used in the liquid crystal composition of the present invention may specifically be a compound represented by the formula (37.1) to the formula (37.4), and preferably a compound thereof. (37.2) Compounds indicated.

In the liquid crystal composition of the present invention, when the compound represented by the formula (37.2) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 2% by mass or more, and more preferably 6% by mass or more. Moreover, it is preferable to limit the maximum ratio to 20% by mass or less, more preferably 16% by mass or less, and still more preferably 12% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is 10% by mass or less.

Further, it is represented by the general formula (X-1) used as the liquid crystal composition of the present invention. The compound shown is a compound represented by the formula (X-1-3).

(wherein R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms)

The compound which can be combined is not particularly limited, and it is preferably one type or two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

Further, the compound represented by the formula (X-1-2) used in the liquid crystal composition of the present invention may specifically be a compound represented by the formula (38.1) to the formula (38.4). (38.2) The compound represented.

In the liquid crystal composition of the present invention, the compound represented by the formula (38.2) is constituted. In the case of the component (A), the content thereof is preferably 1% by mass or more, more preferably 2% by mass or more, and still more preferably 6% by mass or more based on the total amount of the liquid crystal composition of the present invention. Moreover, it is preferable to limit the maximum ratio to 20% by mass or less, more preferably 16% by mass or less, and still more preferably 12% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is 10% by mass or less.

The compound represented by the formula (X) used in the liquid crystal composition of the present invention has a compound represented by the formula (X-2).

(wherein, X ¹⁰² to X ¹⁰³ each independently represent a fluorine atom or a hydrogen atom, Y ¹⁰ represents a fluorine atom, a chlorine atom, -OCF ₃ , and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms)

The compound which can be combined is not particularly limited, and it is preferably one type or two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

Further, the compound represented by the formula (X-2) used in the liquid crystal composition of the present invention may be a compound represented by the formula (X-2-1).

(wherein R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms)

The compound which can be combined is not particularly limited, and it is preferably one type or two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

Further, the compound represented by the formula (X-2-1) used in the liquid crystal composition of the present invention may specifically be a compound represented by the formula (39.1) to the formula (39.4), and preferably contains a compound. (39.2) Compounds indicated.

In the liquid crystal composition of the present invention, when the compound represented by the formula (39.2) is a component (A), the content thereof is preferably 3% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 6% by mass or more, and more preferably 9% by mass or more. Moreover, it is preferable to limit the maximum ratio to 20% by mass or less, more preferably 16% by mass or less, and still more preferably 12% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is 10% by mass or less.

Further, as the compound represented by the formula (X-2) used in the liquid crystal composition of the present invention, the compound represented by the formula (X-2-2) is present.

[Chemical 6]

(wherein R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms)

The compound which can be combined is not particularly limited, and it is preferably one type or two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

Further, the compound represented by the formula (X-2-1) used in the liquid crystal composition of the present invention may specifically be a compound represented by the formula (40.1) to the formula (40.4), and among them, a preferred formula is contained. (40.2) The compound represented.

In the liquid crystal composition of the present invention, when the compound represented by the formula (40.2) is a component (A), the content thereof is preferably 3% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 6% by mass or more, and more preferably 9% by mass or more. Also, considering The solubility at a low temperature, the transfer temperature, the electrical reliability, and the like are preferably limited to 20% by mass or less, more preferably 16% by mass or less, still more preferably 12% by mass or less, and particularly preferably 10% by mass. the following.

The compound represented by the formula (X) used in the liquid crystal composition of the present invention has a compound represented by the formula (X-3).

(wherein, X ¹⁰² to X ¹⁰³ each independently represent a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms)

The compound which can be combined is not particularly limited, and it is preferably one type or two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

Further, the compound represented by the formula (X-3) used in the liquid crystal composition of the present invention may, for example, be a compound represented by the formula (X-3-1).

(wherein R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms)

The compound which can be combined is not particularly limited, and it is preferably one type or two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

Further, the compound represented by the formula (X-3-1) used in the liquid crystal composition of the present invention may specifically be a compound represented by the formula (41.1) to the formula (41.4), and preferably a compound thereof. (41.2) The compound represented.

In the case of the liquid crystal composition of the present invention, when the compound represented by the formula (41.2) is a component (A), the content thereof is preferably 0.5% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is 1% by mass or more, more preferably 2% by mass or more, and still more preferably 3% by mass or more. Moreover, it is preferable to limit the maximum ratio to 10% by mass or less, more preferably 8% by mass or less, and still more preferably 6% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is 4% by mass or less.

The compound represented by the formula (X) used in the liquid crystal composition of the present invention has a compound represented by the formula (X-4).

[Chemical 6]

(wherein X ¹⁰² represents a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms)

The compound which can be combined is not particularly limited, and it is preferably one type or two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

Further, the compound represented by the formula (X-4) used in the liquid crystal composition of the present invention may, for example, be a compound represented by the formula (X-4-1).

(wherein R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms)

The compound which can be combined is not particularly limited, and it is preferably one type or two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

Further, the compound represented by the formula (X-4-1) used in the liquid crystal composition of the present invention may specifically be a compound represented by the formula (42.1) to the formula (42.4), and preferably a compound thereof. (42.3) The compound represented.

In the liquid crystal composition of the present invention, when the compound represented by the formula (42.3) is a component (A), the content thereof is preferably 2% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 5% by mass or more, and more preferably 10% by mass or more. Moreover, it is preferable to limit the maximum ratio to 20% by mass or less, more preferably 17% by mass or less, and still more preferably 15% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is 13% by mass or less.

The compound represented by the formula (X) used in the liquid crystal composition of the present invention has a compound represented by the formula (X-5).

(wherein X ¹⁰² represents a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms)

The compound which can be combined is not particularly limited, and it is preferably one type or two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

Further, the compound represented by the formula (X-5) used in the liquid crystal composition of the present invention may, for example, be a compound represented by the formula (X-5-1).

[Chemical 6]

(wherein R10 represents an alkyl group having 1 to 5 carbon atoms)

The compound which can be combined is not particularly limited, and it is preferably one type or two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

Further, the compound represented by the formula (X-5-1) used in the liquid crystal composition of the present invention may specifically be a compound represented by the formula (43.1) to the formula (43.4), and preferably a compound thereof. (42.2) The compound represented.

The compound represented by the formula (X) used in the liquid crystal composition of the present invention has a compound represented by the formula (X-6).

[Chemical 6]

(wherein R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms)

The compound which can be combined is not particularly limited, and it is preferably one type or two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

Furthermore, the compound represented by the formula (X-6) used in the liquid crystal composition of the present invention may specifically be a compound represented by the formula (44.1) to the formula (44.4), and preferably contains the formula (44.1). And / or a compound represented by the formula (44.2).

In the liquid crystal composition of the present invention, when the compound represented by the formula (44.1) is a component (A), the content thereof is preferably 3% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. 4% by mass or more, more preferably 6% by mass or more, and particularly preferably 9 mass% More than %. Moreover, it is preferable to limit the maximum ratio to 20% by mass or less, more preferably 17% by mass or less, and still more preferably 15% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is 13% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (44.2) is a component (A), the content thereof is preferably 3% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 5% by mass or more, more preferably 7% by mass or more, and particularly preferably 10% by mass or more. Moreover, it is preferable to limit the maximum ratio to 20% by mass or less, more preferably 17% by mass or less, and still more preferably 15% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is 13% by mass or less.

The liquid crystal composition of the present invention preferably contains one or more compounds selected from the group consisting of compounds represented by the formula (XI) in the component (A) having a positive dielectric property.

(wherein, X ¹¹¹ to X ¹¹⁷ each independently represent a fluorine atom or a hydrogen atom, R ¹¹ represents an alkyl group having 1 to 5 carbon atoms, and Y ¹¹ represents a fluorine atom or -OCF ₃ )

The compound which can be combined is not particularly limited, and it is preferably one type to three or more types, more preferably one type to four or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

Further, as the compound represented by the formula (XI) used in the liquid crystal composition of the present invention, the compound represented by the formula (XI-1) is present.

[化10]

(wherein R ¹¹ represents an alkyl group having 1 to 5 carbon atoms)

The compound which can be combined is not particularly limited, and it is preferably one type or two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

Further, the compound represented by the formula (XI-1) used in the liquid crystal composition of the present invention may specifically be a compound represented by the formula (45.1) to the formula (45.4), and preferably contains the formula (45.2). ) to the compound represented by the formula (45.4).

In the liquid crystal composition of the present invention, when the compound represented by the formula (45.2) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 3% by mass or more, more preferably 4% by mass or more, and further preferably 6 mass% or more, and particularly preferably 9% by mass or more. Moreover, it is preferable to limit the maximum ratio to 20% by mass or less, more preferably 17% by mass or less, and still more preferably 15% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is 13% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (45.3) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 2% by mass or more, more preferably 3% by mass or more, and particularly preferably 4% by mass or more. Moreover, it is preferable to limit the maximum ratio to 15% by mass or less, more preferably 10% by mass or less, and still more preferably 8% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is 6 mass% or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (45.4) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 2% by mass or more, more preferably 3% by mass or more, and particularly preferably 4% by mass or more. Moreover, it is preferable to limit the maximum ratio to 10% by mass or less, more preferably 8% by mass or less, and still more preferably 6% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is less than 5% by mass.

The liquid crystal composition of the present invention preferably contains one or more compounds selected from the group consisting of compounds represented by the formula (XII) in the component (A) having a positive dielectric property.

(wherein, X ¹²¹ to X ¹²⁶ each independently represent a fluorine atom or a hydrogen atom, R ¹² represents an alkyl group having 1 to 5 carbon atoms, and Y ¹² represents a fluorine atom or -OCF ₃ )

The compound which can be combined is not particularly limited, and in view of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like, it is preferably one to three or more, more preferably One type to four or more types are combined.

Further, as the compound represented by the formula (XII) used in the liquid crystal composition of the present invention, the compound represented by the formula (XII-1) is present.

(wherein R ¹² represents an alkyl group having 1 to 5 carbon atoms)

The compound which can be combined is not particularly limited, and it is preferably one type or two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

Further, the compound represented by the formula (XII-1) used in the liquid crystal composition of the present invention may specifically be a compound represented by the formula (46.1) to the formula (46.4), and preferably contains the formula (46.2). ) to the compound represented by the formula (46.4).

[化10]

In the liquid crystal composition of the present invention, when the compound represented by the formula (46.2) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 3% by mass or more, more preferably 4% by mass or more, further preferably 6% by mass or more, and particularly preferably 9% by mass or more. Moreover, it is preferable to limit the maximum ratio to 20% by mass or less, more preferably 17% by mass or less, and still more preferably 15% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is 13% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (46.3) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 2% by mass or more, more preferably 3% by mass or more, and particularly preferably 4% by mass or more. Moreover, it is preferable to limit the maximum ratio to 15% by mass or less, more preferably 10% by mass or less, and still more preferably 8% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is 6 mass% or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (46.4) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 2% by mass or more, more preferably 3% by mass or more, and particularly preferably 4% by mass or more. Moreover, it is preferable to limit the maximum ratio to 10% by mass or less, more preferably 8% by mass or less, and still more preferably 6% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is less than 5% by mass.

Further, as the compound represented by the formula (XII) used in the liquid crystal composition of the present invention, the compound represented by the formula (XII-2) is present.

[化10]

(wherein R ¹² represents an alkyl group having 1 to 5 carbon atoms)

The compound which can be combined is not particularly limited, and it is preferably one type or two or more types, more preferably one type to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. .

Further, the compound represented by the formula (XII-2) used in the liquid crystal composition of the present invention may specifically be a compound represented by the formula (47.1) to the formula (47.4), and preferably contains the formula (47.2). ) to the compound represented by the formula (47.4).

In the liquid crystal composition of the present invention, when the compound represented by the formula (47.2) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 3% by mass or more, more preferably 4% by mass or more, and further preferably 6 mass% or more, and particularly preferably 9% by mass or more. Moreover, it is preferable to limit the maximum ratio to 20% by mass or less, more preferably 17% by mass or less, and still more preferably 15% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is 13% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (47.3) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 2% by mass or more, more preferably 3% by mass or more, and particularly preferably 4% by mass or more. Moreover, it is preferable to limit the maximum ratio to 15% by mass or less, more preferably 10% by mass or less, and still more preferably 8% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is 6 mass% or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (47.4) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 2% by mass or more, more preferably 3% by mass or more, and particularly preferably 4% by mass or more. Moreover, it is preferable to limit the maximum ratio to 10% by mass or less, more preferably 8% by mass or less, and still more preferably 6% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is less than 5% by mass.

The liquid crystal composition of the present invention may contain one or two or more compounds selected from the group consisting of compounds represented by the formula (XIV) in the component (A) having a positive dielectric property.

(wherein R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms, X ¹⁴¹ to X ¹⁴⁴ each independently represents a fluorine atom or a hydrogen atom, Y ¹⁴ represents a fluorine atom, a chlorine atom or -OCF ₃ , and Q ¹⁴ represents a single bond. , -COO- or -CF ₂ O-, m ¹⁴ is 0 or 1)

The types of compounds that can be combined are not limited, considering the solubility at low temperatures, The transfer temperature, the electrical reliability, the birefringence, and the like are preferably one to three kinds, more preferably one to four, more preferably one to five, and further preferably one to 6 kinds.

Further, as the compound represented by the formula (XIV), a compound represented by the formula (XIV-1) is present.

(wherein R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms, and Y ¹⁴ represents a fluorine atom, a chlorine atom or -OCF ₃ )

The type of the compound that can be combined is not limited, and it is preferably one to three kinds, more preferably one to four, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. More preferably, it is a combination of 1 to 5 types, and further preferably 1 to 6 types are combined.

Further, the compound represented by the formula (XIV-1) is preferably a compound represented by the formula (XIV-1-1).

(wherein R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms)

Furthermore, the compound represented by the formula (51.1) to the formula (51.4) is specifically a compound represented by the formula (51.1), and the compound represented by the formula (51.1) is preferably contained.

[化37]

In the liquid crystal composition of the present invention, when the compound represented by the formula (51.1) is a component (A), the content thereof is preferably 2% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 4% by mass or more, more preferably 7% by mass or more, further preferably 10% by mass or more, and particularly preferably 18% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like, it is preferable to limit the maximum ratio to 30% by mass or less, more preferably 27% by mass or less, and still more preferably 24% by mass or less. It is less than 21% by mass.

When the electrical reliability is emphasized, the compound represented by the formula (XIV-1-1) is preferably as small as possible, and particularly preferably less than 1%.

Further, the compound represented by the formula (XIV-1) is preferably a compound represented by the formula (XIV-1-2).

(wherein R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms)

In addition, the compound represented by the formula (52.1) to the formula (52.4) is specifically mentioned, and the compound represented by the formula (52.4) is preferable.

In the liquid crystal composition of the present invention, when the compound represented by the formula (52.4) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 3% by mass or more, more preferably 5% by mass or more, and particularly preferably 7% by mass or more. Moreover, it is preferable to limit the maximum ratio to 15% by mass or less, more preferably 13% by mass or less, and still more preferably 11% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is less than 9 mass%.

Further, as the compound represented by the formula (XIV), a compound represented by the formula (XIV-2) is present.

(wherein R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms, X ¹⁴¹ to X ¹⁴⁴ each independently represent a fluorine atom or a hydrogen atom, and Y ¹⁴ represents a fluorine atom, a chlorine atom or -OCF ₃ )

The type of the compound that can be combined is not limited, and it is preferably one to three kinds, more preferably one to four, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. More preferably, it is a combination of 1 to 5 types, and further preferably 1 to 6 types are combined.

Further, the compound represented by the formula (XIV-2) is a compound represented by the formula (XIV-2-1).

(wherein R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms)

In addition, the compound represented by the formula (53.1) to the formula (53.4) is specifically mentioned, and the compound represented by the formula (53.4) is preferable.

In the liquid crystal composition of the present invention, when the compound represented by the formula (53.4) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 3% by mass or more, more preferably 5% by mass or more, and particularly preferably 7% by mass or more. Moreover, it is preferable to limit the maximum ratio to 15% by mass or less, more preferably 13% by mass or less, and still more preferably 11% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is less than 9 mass%.

Further, examples of the compound represented by the formula (XIV-2) include compounds represented by the formula (XIV-2-2).

(wherein R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms)

Further, the compound represented by the formula (XIV-2-2) specifically includes a compound represented by the formula (54.1) to the formula (54.4), and preferably contains the formula (53.2) and/or the formula (53.4). ) the compound represented.

In the liquid crystal composition of the present invention, when the compound represented by the formula (54.2) is a component (A), the content thereof is preferably 3% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 6% by mass or more, more preferably 9% by mass or more, and particularly preferably 12% by mass or more. Moreover, it is preferable to limit the maximum ratio to 20% by mass or less, more preferably 17% by mass or less, and still more preferably 15% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is 14% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (52.4) is a component (A), the content thereof is preferably 2% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 4% by mass or more, more preferably 6% by mass or more, and particularly preferably 8% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., it is preferably The maximum ratio is limited to 15% by mass or less, more preferably 13% by mass or less, still more preferably 11% by mass or less, and particularly preferably less than 9% by mass.

Further, examples of the compound represented by the formula (XIV-2) include compounds represented by the formula (XIV-2-3).

(wherein R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms)

Further, the compound represented by the formula (XIV-2-3) may specifically be a compound represented by the formula (55.1) to the formula (55.4), and preferably contains the formula (55.2) and/or the formula (55.4). ) the compound represented.

In the liquid crystal composition of the present invention, the compound represented by the formula (55.1) is constituted. In the case of the component (A), the content thereof is preferably 5% by mass or more, more preferably 10% by mass or more, and particularly preferably 15% by mass or more based on the total amount of the liquid crystal composition of the present invention. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., it is preferable to limit the maximum ratio to 25% by mass or less, more preferably 22% by mass or less, still more preferably 20% by mass or less, and particularly preferably It is less than 17% by mass.

In the liquid crystal composition of the present invention, when the compound represented by the formula (55.2) is a component (A), the content thereof is preferably 5% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 9% by mass or more, and particularly preferably 12% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like, it is preferable to limit the maximum ratio to 30% by mass or less, more preferably not to 27% by mass, and still more preferably 24% by mass or less. Jiawei is less than 20% by mass.

In the liquid crystal composition of the present invention, when the compound represented by the formula (55.4) is a component (A), the content thereof is preferably 3% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 5% by mass or more, and particularly preferably 8% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like, it is preferable to limit the maximum ratio to 25% by mass or less, more preferably not more than 20% by mass, and still more preferably 15% by mass or less. Jiawei did not reach 12% by mass.

Further, examples of the compound represented by the formula (XIV-2) include compounds represented by the formula (XIV-2-4).

(wherein R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms)

Further, the compound represented by the formula (XIV-2-4) may specifically be a compound represented by the formula (56.1) to the formula (56.4), and preferably contains the formula (56.1) and the formula (56.2). And a compound represented by the formula (56.4).

In the liquid crystal composition of the present invention, when the compound represented by the formula (56.1) is a component (A), the content thereof is preferably 5% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 10% by mass or more, and particularly preferably 15% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., it is preferable to limit the maximum ratio to 25% by mass or less, more preferably 22% by mass or less, still more preferably 20% by mass or less, and particularly preferably It is less than 17% by mass.

In the liquid crystal composition of the present invention, when the compound represented by the formula (56.2) is a component (A), the content thereof is preferably 5% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 9% by mass or more, and particularly preferably 12% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like, it is preferable to limit the maximum ratio to 30% by mass or less, more preferably not to 27% by mass, and still more preferably 24% by mass or less. Jiawei is under 20 quality%.

In the liquid crystal composition of the present invention, when the compound represented by the formula (56.4) is a component (A), the content thereof is preferably 3% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 5% by mass or more, and particularly preferably 8% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like, it is preferable to limit the maximum ratio to 25% by mass or less, more preferably not more than 20% by mass, and still more preferably 15% by mass or less. Jiawei did not reach 12% by mass.

Further, examples of the compound represented by the formula (XIV-2) include compounds represented by the formula (XIV-2-5).

(wherein R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms)

Furthermore, the compound represented by the formula (57.1) to the formula (57.4) is specifically mentioned, and the compound represented by the formula (57.1) is preferable.

[Chemistry 20]

In the liquid crystal composition of the present invention, when the compound represented by the formula (57.1) is a component (A), the content thereof is preferably 5% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 10% by mass or more, and particularly preferably 13% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like, it is preferable to limit the maximum ratio to 25% by mass or less, more preferably not to 22% by mass, still more preferably 18% by mass or less. Jiawei did not reach 15% by mass.

Further, examples of the compound represented by the formula (XIV-2) include compounds represented by the formula (XIV-2-6).

(wherein R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms)

Furthermore, the compound represented by the formula (58.1) to the formula (58.4) is specifically mentioned, and the compound represented by the formula (58.2) is preferable.

[Chemistry 20]

In the liquid crystal composition of the present invention, when the compound represented by the formula (58.1) is a component (A), the content thereof is preferably 5% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 10% by mass or more, and particularly preferably 15% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., it is preferable to limit the maximum ratio to 25% by mass or less, more preferably 22% by mass or less, still more preferably 20% by mass or less, and particularly preferably It is less than 17% by mass.

In the liquid crystal composition of the present invention, when the compound represented by the formula (58.2) is a component (A), the content thereof is preferably 5% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 9% by mass or more, and particularly preferably 12% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like, it is preferable to limit the maximum ratio to 30% by mass or less, more preferably not to 27% by mass, and still more preferably 24% by mass or less. Jiawei is less than 20% by mass.

In the liquid crystal composition of the present invention, when the compound represented by the formula (58.4) is a component (A), the content thereof is preferably 3% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 5% by mass or more, and particularly preferably 8% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., it is preferable to limit the maximum ratio to 25 masses. % or less is further preferably less than 20% by mass, more preferably 15% by mass or less, and particularly preferably less than 12% by mass.

The liquid crystal composition of the present invention may contain one or two or more compounds represented by the formula (IX) in the component (A) having a positive dielectric property.

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms; X ⁹¹ and X ⁹² each independently represent a hydrogen atom or a fluorine atom, and Y ⁹ represents a fluorine atom or a chlorine atom. Or -OCF ₃ , U ⁹ represents a single bond, -COO- or -CF ₂ O-)

The type of the compound that can be combined is not limited, and it is preferably one to three kinds, more preferably one to four, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. More preferably, it is a combination of 1 to 5 types, and further preferably 1 to 6 types are combined.

Further, as the compound represented by the formula (IX), a compound represented by the formula (IX-1) is present.

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, X ⁹² represents a hydrogen atom or a fluorine atom, and Y ⁹ represents a fluorine atom or -OCF ₃ )

The type of the compound that can be combined is not limited, and it is preferably one to three kinds, more preferably one to four, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. More preferably, it is a combination of 1 to 5 types, and further preferably 1 to 6 types are combined.

Further, examples of the compound represented by the formula (IX-1) include the formula (IX-1-1) The compound represented.

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms)

Further, the compound represented by the formula (IX-1-1) may, for example, be a compound represented by the formula (28.1) to the formula (28.5), and is preferably a compound represented by the formula (28.3) or / and the formula (28.5).

In the liquid crystal composition of the present invention, the compound represented by the formula (28.3) is composed. In the case of the component (A), the content of the liquid crystal composition of the present invention is preferably 1% by mass or more, more preferably 5% by mass or more, still more preferably 8% by mass or more, and further preferably It is 10% by mass or more, more preferably 14% by mass or more, and particularly preferably 16% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., it is preferable to limit the maximum ratio to 30% by mass or less, more preferably 25% by mass or less, and still more preferably 22% by mass or less. It is less than 20% by mass.

In the liquid crystal composition of the present invention, when the compound represented by the formula (28.5) is a component (A), the content thereof is preferably 3% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 7% by mass or more, and particularly preferably 10% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like, it is preferable to limit the maximum ratio to 25% by mass or less, more preferably not more than 20% by mass, and still more preferably 15% by mass or less. Jiawei did not reach 13% by mass.

Further, as the compound represented by the formula (IX-1), a compound represented by the formula (IX-1-2) is present.

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms)

Further, the compound represented by the formula (IX-1-2) may, for example, be a compound represented by the formula (29.1) to the formula (29.4), and is preferably a compound represented by the formula (29.2) or/and the formula (29.4).

[化12]

In the liquid crystal composition of the present invention, when the compound represented by the formula (29.2) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 5% by mass or more, more preferably 8% by mass or more, further preferably 10% by mass or more, further preferably 14% by mass or more, and particularly preferably 16% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., it is preferable to limit the maximum ratio to 30% by mass or less, more preferably 25% by mass or less, and still more preferably 22% by mass or less. It is less than 20% by mass.

In the liquid crystal composition of the present invention, when the compound represented by the formula (29.4) is a component (A), the content thereof is preferably 3% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 7% by mass or more, and particularly preferably 10% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like, it is preferable to limit the maximum ratio to 25% by mass or less, more preferably not more than 20% by mass, and still more preferably 15% by mass or less. Jiawei did not reach 13% by mass.

Further, as the compound represented by the formula (IX), a compound represented by the formula (IX-2) is present.

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms; X ⁹¹ and X ⁹² each independently represent a hydrogen atom or a fluorine atom, and Y ⁹ represents a fluorine atom or a chlorine atom. Or -OCF ₃ )

The type of the compound that can be combined is not limited, and it is preferably one to three kinds, more preferably one to four, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. More preferably, it is a combination of 1 to 5 types, and further preferably 1 to 6 types are combined.

Further, the compound represented by the formula (IX-2) includes a compound represented by the formula (IX-2-1).

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms)

Further, the compound represented by the formula (IX-2-1) may, for example, be a compound represented by the formula (30.1) to the formula (30.4), and among them, a compound represented by the formula (30.1) to the formula (30.2) is preferred.

In the liquid crystal composition of the present invention, when the compound represented by the formula (30.1) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 3% by mass or more, more preferably 5% by mass or more, further preferably 8% by mass or more, further preferably 11% by mass or more, and particularly preferably 16% by mass or more. Again The maximum ratio is preferably 30% by mass or less, more preferably 25% by mass or less, even more preferably 22% by mass or less, and particularly preferably not, in view of solubility at a low temperature, transfer temperature, electrical reliability, and the like. Up to 20% by mass.

In the liquid crystal composition of the present invention, when the compound represented by the formula (30.2) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 5% by mass or more, more preferably 9% by mass or more, further preferably 15% by mass or more, and particularly preferably 21% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like, it is preferable to limit the maximum ratio to 40% by mass or less, more preferably 30% by mass or less, and still more preferably 25% by mass or less. Jiawei did not reach 23% by mass.

Further, as the compound represented by the formula (IX-2), a compound represented by the formula (IX-2-2) is present.

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms)

Further, the compound represented by the formula (IX-2-2) may, for example, be a compound represented by the formula (31.1) to the formula (31.4), and preferably a compound represented by the formula (31.1) to the formula (31.4).

In the liquid crystal composition of the present invention, when the compound represented by the formula (31.1) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 3% by mass or more, more preferably 5% by mass or more, further preferably 8% by mass or more, further preferably 11% by mass or more, and particularly preferably 16% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., it is preferable to limit the maximum ratio to 30% by mass or less, more preferably 25% by mass or less, and still more preferably 22% by mass or less. It is less than 20% by mass.

In the liquid crystal composition of the present invention, when the compound represented by the formula (31.2) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 2% by mass or more, and particularly preferably 3% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like, the maximum ratio is preferably limited to 15% by mass or less, more preferably less than 12% by mass, and still more preferably 8% by mass or less. Jiawei did not reach 4% by mass.

In the liquid crystal composition of the present invention, when the compound represented by the formula (31.3) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 3% by mass or more, more preferably 5% by mass or more, further preferably 8% by mass or more, further preferably 11% by mass or more, and particularly preferably 16% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., it is preferable to limit the maximum ratio to 30% by mass or less, more preferably 25% by mass or less, and still more preferably 22% by mass or less. It is less than 20% by mass.

In the liquid crystal composition of the present invention, when the compound represented by the formula (31.4) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 5% by mass or more, more preferably 9% by mass or more, further preferably 15% by mass or more, and particularly preferably 21% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., it is preferable to limit the maximum ratio to 40% by mass or less, and further preferably It is less than 30% by mass, more preferably 25% by mass or less, and particularly preferably less than 23% by mass.

Further, as the compound represented by the formula (IX-2), a compound represented by the formula (IX-2-3) is present.

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms)

Further, the compound represented by the formula (IX-2-3) may, for example, be a compound represented by the formula (32.1) to the formula (32.4), and is preferably a compound represented by the formula (32.2) and/or the formula (32.4).

In the liquid crystal composition of the present invention, when the compound represented by the formula (32.2) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 3% by mass or more, more preferably 5% by mass or more, further preferably 8% by mass or more, further preferably 11% by mass or more, and particularly preferably 16% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., it is preferable to limit the maximum ratio to 30% by mass or less, more preferably 25% by mass or less, and still more preferably 22% by mass or less. It is less than 20% by mass.

In the liquid crystal composition of the present invention, the compound represented by the formula (32.4) is constituted. In the case of the component (A), the content of the liquid crystal composition of the present invention is preferably 1% by mass or more, more preferably 3% by mass or more, still more preferably 6% by mass or more, and further preferably It is 9% by mass or more, and particularly preferably 15% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., it is preferable to limit the maximum ratio to 30% by mass or less, more preferably not to 25% by mass, and still more preferably 20% by mass or less. Jiawei did not reach 18% by mass.

Especially in the case of attaching importance to electrical reliability, it is preferred to avoid using the compound represented by the general formula (IX-2-3) as much as possible. In this case, it is preferably less than 1% by mass, and more preferably less than 0.5% by mass.

Further, as the compound represented by the formula (IX-2), a compound represented by the formula (IX-2-4) is present.

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms)

Further, the compound represented by the formula (IX-2-4) may, for example, be a compound represented by the formula (33.1) to the formula (33.5), and is preferably a compound represented by the formula (33.1) and/or the formula (33.3).

In the liquid crystal composition of the present invention, when the compound represented by the formula (33.1) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 3% by mass or more, more preferably 5% by mass or more, and particularly preferably 8% by mass or more. Moreover, it is preferable to limit the maximum ratio to 30% by mass or less, more preferably 20% by mass or less, and still more preferably 15% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is less than 10% by mass.

In the liquid crystal composition of the present invention, when the compound represented by the formula (33.3) is a component (A), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 3% by mass or more, more preferably 6% by mass or more, further preferably 9% by mass or more, and particularly preferably 15% by mass or more. Further, in consideration of solubility at low temperature, transfer temperature, electrical reliability, etc., it is preferable to limit the maximum ratio to 30% by mass or less, more preferably not to 25% by mass, and still more preferably 20% by mass or less. Jiawei did not reach 18% by mass.

Further, as the compound represented by the formula (IX-2), a compound represented by the formula (IX-2-5) is present.

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms)

Further, the compound represented by the formula (IX-2-5) can be exemplified by the formula (34.1) to The compound represented by the formula (34.5) is preferably a compound represented by the formula (34.1) to the formula (34.3) and the formula (34.5).

In the liquid crystal composition of the present invention, when the compound represented by the formula (34.1) is a component (A), the content thereof is preferably 2% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 4% by mass or more, more preferably 7% by mass or more, and particularly preferably 9% by mass or more. Moreover, it is preferable to limit the maximum ratio to 30% by mass or less, more preferably 20% by mass or less, and still more preferably 15% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is less than 12% by mass.

In the liquid crystal composition of the present invention, the compound represented by the formula (34.2) is constituted. In the case of the component (A), the content of the liquid crystal composition of the present invention is preferably 2% by mass or more, more preferably 4% by mass or more, still more preferably 7% by mass or more, and particularly preferably 9% by mass or more. Moreover, it is preferable to limit the maximum ratio to 30% by mass or less, more preferably 20% by mass or less, and still more preferably 15% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is less than 12% by mass.

In the liquid crystal composition of the present invention, when the compound represented by the formula (34.3) is a component (A), the content thereof is preferably 2% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 4% by mass or more, more preferably 7% by mass or more, and particularly preferably 10% by mass or more. Moreover, it is preferable to limit the maximum ratio to 30% by mass or less, more preferably 20% by mass or less, and still more preferably 15% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is less than 12% by mass.

In the liquid crystal composition of the present invention, when the compound represented by the formula (34.5) is a component (A), the content thereof is preferably 2% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 4% by mass or more, more preferably 7% by mass or more, and particularly preferably 9% by mass or more. Moreover, it is preferable to limit the maximum ratio to 30% by mass or less, more preferably 20% by mass or less, and still more preferably 15% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is less than 12% by mass.

Further, as the compound represented by the formula (IX), a compound represented by the formula (IX-3) is present.

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms; X ⁹¹ and X ⁹² each independently represent a hydrogen atom or a fluorine atom, and Y ⁹ represents a fluorine atom or a chlorine atom. Or -OCF ₃ )

The types of compounds that can be combined are not limited, considering the solubility at low temperatures, The transfer temperature, the electrical reliability, the birefringence, and the like are preferably one to three kinds, more preferably one to four, more preferably one to five, and further preferably one to 6 kinds.

Further, as the compound represented by the formula (IX-3), a compound represented by the formula (IX-3-1) is present.

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms)

Further, the compound represented by the formula (IX-3-1) may, for example, be a compound represented by the formula (35.1) to the formula (35.4), and is preferably a compound represented by the formula (35.1) and/or the formula (35.2).

In the liquid crystal composition of the present invention, the compound represented by the formula (35.1) is constituted. In the case of the component (A), the content of the liquid crystal composition of the present invention is preferably 1% by mass or more, more preferably 3% by mass or more, still more preferably 7% by mass or more, and particularly preferably 10% by mass or more. Moreover, it is preferable to limit the maximum ratio to 30% by mass or less, more preferably 20% by mass or less, and still more preferably 15% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is less than 12% by mass.

In the liquid crystal composition of the present invention, when the compound represented by the formula (35.2) is a component (A), the content thereof is preferably 5% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 10% by mass or more, more preferably 13% by mass or more, and particularly preferably 15% by mass or more. Moreover, it is preferable to limit the maximum ratio to 30% by mass or less, more preferably 25% by mass or less, and still more preferably 20% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is less than 18% by mass.

The liquid crystal composition of the present invention preferably contains a compound selected from the group consisting of compounds represented by the formula (VIII) in the component (A) having a positive dielectric property.

(wherein R ⁸ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 4 to 5 carbon atoms; X ⁸¹ to X ⁸⁵ each independently represent a hydrogen atom or a fluorine atom, and Y ⁸ represents a fluorine atom or -OCF ₃ )

The compound which can be combined is not particularly limited, and in view of solubility at low temperature, transfer temperature, electrical reliability, birefringence and the like, it is preferred to combine one to two or more, more preferably one to three. More preferably, it is a combination of 1 to 4 types, more preferably 1 to 5 types, and further preferably 1 to 6 types.

Further, as the compound represented by the formula (VIII), a compound represented by the formula (VIII-1) is present.

(wherein R ⁸ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 4 to 5 carbon atoms)

Further, the compound represented by the formula (VIII-1) may specifically be a compound represented by the formula (26.1) to the formula (26.4), preferably a compound represented by the formula (26.1), represented by the formula (26.2). The compound is an essential component of the liquid crystal composition of the present invention.

In the liquid crystal composition of the present invention, when the compound represented by the formula (26.1) is a component (A), the content is preferably considered in view of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. It is 1% by mass or more, preferably 2% by mass or more, more preferably 3% by mass, and still more preferably 4% by mass or more. Further, the maximum ratio which can be contained is preferably 10% by mass or less, more preferably 7% by mass or less, and still more preferably 5% by mass or less.

In the liquid crystal composition of the present invention, in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., the composition of the component (A) is compared with the total amount of the liquid crystal composition of the present invention (26.2). The content of the compound represented by the compound is preferably 2% by mass or more, more preferably 4% by mass or more, still more preferably 10% by mass or more, still more preferably 14% by mass or more, and still more preferably 16% by mass or more. Good is 21% by mass or more. Moreover, it is preferable to limit the maximum ratio to 40% by mass or less, more preferably 35% by mass or less, and still more preferably 30% by mass or less, in view of solubility at low temperature, transfer temperature, electrical reliability, and the like. It is 25 mass% or less.

Further, as the compound represented by the formula (VIII), a compound represented by the formula (VIII-2) is present.

(wherein R ⁸ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 4 to 5 carbon atoms)

The type of the compound which can be combined is not particularly limited, and it is preferably one to three kinds of the compounds, more preferably one to four, and particularly preferably one to five or more.

Further, the compound represented by the formula (VIII-2) may, for example, be a compound represented by the formula (27.1) to the formula (27.4), and is preferably a compound represented by the formula (27.2).

[化10]

In the liquid crystal composition of the present invention, when the compound represented by the formula (27.1) is a component (A), the content is preferably considered in view of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. It is 1% by mass or more, preferably 2% by mass or more, more preferably 3% by mass, and still more preferably 5% by mass or more. Further, the maximum ratio which can be contained is preferably 25% by mass or less, more preferably 20% by mass or less, still more preferably 15% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (27.2) constitutes the component (A), the content thereof is preferably considered in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. It is 2.5% by mass or more, preferably 8% by mass or more, more preferably 10% by mass, still more preferably 12% by mass or more. Further, the maximum ratio which can be contained is preferably 25% by mass or less, more preferably 20% by mass or less, still more preferably 15% by mass or less.

In the liquid crystal composition of the present invention, in the case where the compound represented by the formula (27.3) constitutes the component (A), the content thereof is preferably considered in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. It is 8.5 mass% or more, preferably 10 mass% or more, more preferably 12 mass%, still more preferably 14 mass% or more, and still more preferably 16 mass% or more. Moreover, the maximum ratio which can be contained is preferably 30% by mass or less, more preferably 25% by mass or less, and still more preferably 20% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (27.4) constitutes the component (A), the content thereof is preferably considered in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. 1% by mass or more, preferably 3% by mass or more, more preferably 5 mass% The amount % is more preferably 8% by mass or more, and still more preferably 12% by mass or more. Further, the maximum ratio which can be contained is preferably 35 mass% or less, more preferably 20 mass% or less, still more preferably 15 mass% or less.

The liquid crystal composition of the present invention may further contain one or more compounds selected from the group consisting of compounds represented by the formula (XIII) among the components (A) having a positive dielectric property.

(wherein, X ¹³¹ to X ¹³⁵ each independently represent a fluorine atom or a hydrogen atom, R ¹³ represents an alkyl group having 1 to 5 carbon atoms, and Y ¹³ represents a fluorine atom or -OCF ₃ )

The type of the compound which can be combined is not particularly limited, and it is preferably one to two kinds, more preferably one to three, and even more preferably one to four kinds of the compounds.

Further, as the compound represented by the formula (XIII), a compound represented by the formula (XIII-1) is present.

(wherein R ¹³ represents an alkyl group having 1 to 5 carbon atoms)

Further, the compound represented by the formula (XIII-1) may, for example, be a compound represented by the formula (48.1) to the formula (48.4), and among them, a compound represented by the formula (48.2) is preferred.

[Chemistry 13]

In the liquid crystal composition of the present invention, when the compound represented by the formula (48.1) is a component (A), the content thereof is preferably 1% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 3% by mass or more, more preferably 5% by mass or more, and particularly preferably 10% by mass or more. Further, the maximum ratio which can be contained is preferably 40% by mass or less, more preferably 30% by mass or less, and still more preferably 20% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (48.2) is a component (A), the content thereof is preferably 1% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 3% by mass or more, more preferably 5% by mass or more, and particularly preferably 10% by mass or more. Further, the maximum ratio which can be contained is preferably 25% by mass or less, more preferably 20% by mass or less, still more preferably 15% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (48.3) is a component (A), the content thereof is preferably 2% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 4% by mass or more, more preferably 6% by mass or more, further preferably 8% by mass or more, and particularly preferably 10% by mass or more. Further, the maximum ratio which can be contained is preferably 25% by mass or less, more preferably 20% by mass or less, still more preferably 15% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (48.4) is a component (A), the content thereof is preferably 1% by mass or more based on the total amount of the liquid crystal composition of the present invention. The content is preferably 5% by mass or more, more preferably 7% by mass or more, further preferably 9% by mass or more, and particularly preferably 12% by mass or more. Further, the maximum ratio which can be contained is preferably 25% by mass or less, more preferably 20% by mass or less, still more preferably 15% by mass or less.

Further, as the compound represented by the formula (XIII), a compound represented by the formula (XIII-2) is present.

(wherein R ¹³ represents an alkyl group having 1 to 5 carbon atoms)

Further, the compound represented by the formula (XIII-2) may, for example, be a compound represented by the formula (49.1) to the formula (49.4), and is preferably a compound represented by the formula (49.1) or/and the formula (49.2).

In the liquid crystal composition of the present invention, when the compound represented by the formula (49.1) is a component (A), the content thereof is preferably 2% by mass or more based on the total amount of the liquid crystal composition of the present invention. The content is preferably 3% by mass or more, more preferably 4% by mass or more, and particularly preferably 6% by mass or more. Moreover, the maximum ratio which can be contained is preferably 30% by mass or less, more preferably 20% by mass or less, and still more preferably 10% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (49.2) is a component (A), the content thereof is preferably 5% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 6% by mass or more, more preferably 8% by mass or more, and particularly preferably 10% by mass or more. Further, the maximum ratio which can be contained is preferably 25% by mass or less, more preferably 20% by mass or less, still more preferably 15% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (49.3) is a component (A), the content thereof is preferably 2% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 4% by mass or more, more preferably 6% by mass or more, further preferably 8% by mass or more, and particularly preferably 10% by mass or more. Further, the maximum ratio which can be contained is preferably 25% by mass or less, more preferably 20% by mass or less, still more preferably 15% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (49.4) is a component (A), the content thereof is preferably 1% by mass or more based on the total amount of the liquid crystal composition of the present invention. The content is preferably 5% by mass or more, more preferably 7% by mass or more, further preferably 9% by mass or more, and particularly preferably 12% by mass or more. Further, the maximum ratio which can be contained is preferably 25% by mass or less, more preferably 20% by mass or less, still more preferably 15% by mass or less.

Further, as the compound represented by the formula (XIII), a compound represented by the formula (XIII-3) is present.

(wherein R ¹³ represents an alkyl group having 1 to 5 carbon atoms)

Further, the compound represented by the formula (XIII-3) may, for example, be a compound represented by the formula (50.1) to the formula (50.4), and is preferably a compound represented by the formula (50.1) or/and the formula (50.2).

In the liquid crystal composition of the present invention, when the compound represented by the formula (50.1) is a component (A), the content thereof is preferably 3% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably 5% by mass or more, and more preferably 7% by mass or more. It is particularly preferable to contain 10% by mass or more. Further, the maximum ratio which can be contained is preferably 25% by mass or less, more preferably 20% by mass or less, still more preferably 15% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (50.2) is a component (A), the content thereof is preferably 2% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 4% by mass or more, more preferably 9% by mass or more, and particularly preferably 11% by mass or more. Moreover, the maximum ratio which can be contained is preferably 20% by mass or less, more preferably 17% by mass or less, and still more preferably 14% by mass or less.

The liquid crystal composition of the present invention contains the component (B) which is a component having a dielectric property of neutrality. The component (B) which is a component having a dielectric property is composed of a compound having a dielectric anisotropy of more than -2 and less than +2. The component (B) of the liquid crystal composition of the present invention contains the formula (2.3)

The compound represented. In the liquid crystal composition of the present invention, the content of the compound represented by the formula (2.3) of the component (B) is preferably 5% by mass or more, more preferably 10% by mass based on the total amount of the liquid crystal composition of the present invention. % is more preferably 14% by mass or more, still more preferably 17% by mass or more, more preferably 19% by mass or more, still more preferably 22% by mass or more, more preferably 25 or more, still more preferably 27 or more, and more preferably It is 30% by mass or more, more preferably 33% by mass or more, and particularly preferably 36% by mass or more. Moreover, the maximum ratio which can be contained is preferably 55 mass% or less, more preferably 50 mass% or less, further preferably 45 mass% or less, and particularly preferably 40 mass% or less.

In the liquid crystal composition of the present invention, one or two or more kinds of the compounds represented by the formula (V) may be contained in the component (B) which is a component having a dielectric property.

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, and A ⁵¹ and A ⁵² each independently represent a 1,4-cyclohexylene group or a 1,4-phenylene group, Q ⁵ Represents a single bond or -COO-, and X ⁵¹ and X ⁵² independently represent a fluorine atom or a hydrogen atom)

The type of the compound which can be combined is not particularly limited, and it is preferably one to three kinds of these compounds depending on the properties required for solubility at low temperature, transfer temperature, electrical reliability, and birefringence. It is preferably contained in one to four kinds, and more preferably in one to five or more.

Further, as the compound represented by the formula (V), a compound represented by the formula (V-1) is present.

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, and X ⁵¹ and X ⁵² each independently represent a fluorine atom or a hydrogen atom)

Further, as the compound represented by the formula (V-1), a compound represented by the formula (V-1-1) is present.

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms)

Further, the compound represented by the formula (V-1-1) may, for example, be a compound represented by the formula (20.1) to the formula (20.4), and among them, a compound represented by the formula (20.2) is preferred.

[化12]

In the case of the liquid crystal composition of the present invention, when the compound represented by the formula (20.2) is a component (B), the content thereof is preferably 1% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 2% by mass or more, more preferably 3% by mass or more, and particularly preferably 4% by mass or more. Further, the maximum ratio which can be contained is preferably 15% by mass or less, more preferably 10% by mass or less, still more preferably 8% by mass or less.

Further, as the compound represented by the formula (V-1), a compound represented by the formula (V-1-2) is present.

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms)

Further, the compound represented by the formula (V-1-2) may, for example, be a compound represented by the formula (21.1) to the formula (21.3), and among them, a compound represented by the formula (21.1) is preferred.

In the liquid crystal composition of the present invention, the compound represented by the formula (21.1) is constituted. In the case of the component (B), the content thereof is preferably 1% by mass or more, more preferably 2% by mass or more, and still more preferably 3% by mass or more based on the total amount of the liquid crystal composition of the present invention. More preferably, it is contained in an amount of 4% by mass or more. Further, the maximum ratio which can be contained is preferably 15% by mass or less, more preferably 10% by mass or less, still more preferably 8% by mass or less.

Further, as the compound represented by the formula (V-1), a compound represented by the formula (V-1-3) is present.

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms)

Further, the compound represented by the formula (V-1-3) may, for example, be a compound represented by the formula (22.1) to the formula (22.3), and among them, a compound represented by the formula (21.1) is preferred.

In the case of the liquid crystal composition of the present invention, when the compound represented by the formula (22.1) is a component (B), the content thereof is preferably 1% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 2% by mass or more, more preferably 3% by mass or more, and particularly preferably 4% by mass or more. Further, the maximum ratio which can be contained is preferably 15% by mass or less, more preferably 10% by mass or less, still more preferably 8% by mass or less.

Further, as the compound represented by the formula (V), a compound represented by the formula (V-2) is present.

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, and X ⁵¹ and X ⁵² each independently represent a fluorine atom or a hydrogen atom)

Further, as the compound represented by the formula (V-2), a compound represented by the formula (V-2-1) is present.

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms)

Further, the compound represented by the formula (V-2-1) may be a compound represented by the formula (23.1) to the formula (23.4), and preferably, it is represented by the formula (23.1) or/and the formula (23.2). Compound.

[化15]

In the case of the liquid crystal composition of the present invention, when the compound represented by the formula (23.1) is a component (B), the content thereof is preferably 2% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 4% by mass or more, more preferably 6% by mass or more, and particularly preferably 9% by mass or more. Further, the maximum ratio which can be contained is preferably 16% by mass or less, more preferably 13% by mass or less, still more preferably 11% by mass or less.

In the case of the liquid crystal composition of the present invention, when the compound represented by the formula (23.2) is a component (B), the content thereof is preferably 2% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 4% by mass or more, more preferably 7% by mass or more, and particularly preferably 8% by mass or more. Further, the maximum ratio which can be contained is preferably 16% by mass or less, more preferably 13% by mass or less, still more preferably 11% by mass or less.

Further, as the compound represented by the formula (V-2), a compound represented by the formula (V-2-2) is present.

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms)

Further, the compound represented by the formula (V-2-2) may, for example, be a compound represented by the formula (24.1) to the formula (24.4), and is preferably represented by the formula (24.1) or/and the formula (24.2). Compound.

[化15]

In the case of the liquid crystal composition of the present invention, when the compound represented by the formula (24.1) is a component (B), the content thereof is preferably 2% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 4% by mass or more, more preferably 6% by mass or more, and particularly preferably 9% by mass or more. Further, the maximum ratio which can be contained is preferably 16% by mass or less, more preferably 13% by mass or less, still more preferably 11% by mass or less.

In the case of the liquid crystal composition of the present invention, when the compound represented by the formula (24.2) is a component (B), the content thereof is preferably 2% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 4% by mass or more, more preferably 7% by mass or more, and particularly preferably 8% by mass or more. Further, the maximum ratio which can be contained is preferably 16% by mass or less, more preferably 13% by mass or less, still more preferably 11% by mass or less.

Further, as the compound represented by the formula (V), a compound represented by the formula (V-3) is present.

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms)

Further, the compound represented by the formula (V-3) is preferably a compound represented by the formula (25.1) to the formula (25.3).

In the liquid crystal composition of the present invention, when the compound represented by the formula (25.1) is a component (B), the content thereof is preferably 2% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 4% by mass or more, more preferably 6% by mass or more, and particularly preferably 9% by mass or more. Further, the maximum ratio which can be contained is preferably 16% by mass or less, more preferably 13% by mass or less, still more preferably 11% by mass or less.

In the case of the liquid crystal composition of the present invention, when the compound represented by the formula (25.2) is a component (B), the content thereof is preferably 2% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 4% by mass or more, more preferably 7% by mass or more, and particularly preferably 8% by mass or more. Further, the maximum ratio which can be contained is preferably 16% by mass or less, more preferably 13% by mass or less, still more preferably 11% by mass or less.

In the case of the liquid crystal composition of the present invention, when the compound represented by the formula (25.3) is a component (B), the content thereof is preferably 2% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 4% by mass or more, more preferably 7% by mass or more, and particularly preferably 8% by mass or more. Further, the maximum ratio which can be contained is preferably 16% by mass or less, more preferably 13% by mass or less, still more preferably 11% by mass or less.

In the liquid crystal composition of the present invention, one or two or more kinds of the compounds represented by the formula (I) may be contained in the component (B) which is a component having a dielectric property.

R ¹¹ -A ¹¹ -A ¹² -R ¹² (I)

(wherein R ¹¹ and R ¹² each independently represent an alkyl group or alkoxy group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and A ¹¹ and A ¹² each independently represent 1,4- Cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene or 3-fluoro-1,4-phenylene

The type of the compound which can be combined is not particularly limited, and it is preferably one to three kinds of these compounds depending on the properties required for solubility at low temperature, transfer temperature, electrical reliability, and birefringence. It is preferably contained in one to four kinds, and more preferably in one to five or more.

Further, as the compound represented by the formula (I), a compound represented by the formula (I-1) is present.

(wherein R ¹¹ and R ¹² each independently represent an alkyl group or alkoxy group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms)

Preferably, the compound represented by the formula (2.3) and the compound represented by the formula (I-1) are used in combination, and the compound represented by the formula (I-1) used in combination with the formula (2.3) is preferably one. More than or equal to the above, more preferably two or more.

Further, as the compound represented by the formula (I-1), a compound represented by the formula (I-1-1) is present.

(wherein R ¹² each independently represents an alkyl group or alkoxy group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms)

Further, the compound represented by the formula (I-1-1) can be exemplified by the formula (1.1) to the formula The compound represented by the formula (1.3) is preferably a compound represented by the formula (1.2) or the formula (1.3), and more preferably a compound represented by the formula (1.3).

In the case of the liquid crystal composition of the present invention, when the compound represented by the formula (1.2) is a component (B), the content thereof is preferably 10% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 20% by mass or more, more preferably 25% by mass or more, and particularly preferably 30% by mass or more. Further, the maximum ratio which can be contained is preferably 50% by mass or less, more preferably 45% by mass or less, and still more preferably 40% by mass or less.

In the case of the liquid crystal composition of the present invention, when the compound represented by the formula (1.3) is a component (B), the content thereof is preferably 7% by mass or more based on the total amount of the liquid crystal composition of the present invention. The content is preferably 9% by mass or more, more preferably 11% by mass or more, and particularly preferably 15% by mass or more. Further, the maximum ratio which can be contained is preferably 35% by mass or less, more preferably 25% by mass or less, and still more preferably 20% by mass or less. It is especially preferred to use a compound represented by the formula (1.3) in combination with a compound represented by the formula (2.3).

Further, as the compound represented by the formula (I-1), a compound represented by the formula (I-1-2) is present.

(wherein R ¹² each independently represents an alkyl group or alkoxy group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms)

Further, the compound represented by the formula (I-1-2) may, for example, be a compound represented by the formula (2.1) to the formula (2.5), and is preferably a compound represented by the formula (2.2) to the formula (2.5). The compound represented by the formula (2.3) is an essential component of the liquid crystal composition of the present invention.

In the case of the liquid crystal composition of the present invention, when the compound represented by the formula (2.2) is a component (B), the content thereof is preferably 10% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 20% by mass or more, more preferably 25% by mass or more, and particularly preferably 30% by mass or more. Further, the maximum ratio which can be contained is preferably 50% by mass or less, more preferably 45% by mass or less, and still more preferably 40% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (2.3) of the component (B) is preferably 5% by mass or more, more preferably 10% by mass based on the total amount of the liquid crystal composition of the present invention. % is more preferably 14% by mass or more, still more preferably 17% by mass or more, more preferably 19% by mass or more, still more preferably 22% by mass or more, more preferably 25 or more, still more preferably 27 or more, and more preferably It is 30% by mass or more, more preferably 33% by mass or more, and particularly preferably 36% by mass or more. Moreover, as a maximum ratio which can be contained, it is preferably 55 mass% or less, more preferably 50 mass% or less. Further, it is preferably 45 mass% or less, and particularly preferably 40 mass% or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (2.4) is a component (B), the content thereof is preferably 5% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 10% by mass, more preferably 14% by mass or more, still more preferably 17% by mass or more, more preferably 19% by mass or more, more preferably 21% by mass or more, still more preferably 25% by mass or more, and still more preferably 27% by mass or more. More preferably, it is 30 mass% or more, more preferably 33 mass% or more, and still more preferably 36 mass% or more. Moreover, the maximum ratio which can be contained is preferably 55 mass% or less, more preferably 50 mass% or less, further preferably 45 mass% or less, and particularly preferably 40 mass% or less.

It is especially preferred to use a compound represented by the formula (2.4) in combination with a compound represented by the formula (2.3).

Further, as the compound represented by the formula (I), a compound represented by the formula (I-2) is present.

(wherein R ¹³ and R ¹⁴ each independently represent an alkyl group having 1 to 5 carbon atoms)

Further, the compound represented by the formula (I-2) may, for example, be a compound represented by the formula (3.1) to the formula (3.4), and preferably a compound represented by the formula (3.1), the formula (3.3) and the formula (3.4). .

In the case of the liquid crystal composition of the present invention, when the compound represented by the formula (3.1) is a component (B), the content thereof is preferably 10% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 20% by mass or more, more preferably 25% by mass or more, and particularly preferably 30% by mass or more. Further, the maximum ratio which can be contained is preferably 50% by mass or less, more preferably 45% by mass or less, and still more preferably 40% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (3.3) is a component (B), the content thereof is preferably 2% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 3 mass%, more preferably 4 mass% or more, more preferably 10 mass% or more, more preferably 12 mass% or more, still more preferably 14 mass% or more, more preferably 16 mass% or more, more preferably 20 mass%. The above is more preferably 23 mass% or more, still more preferably 26 mass% or more, and particularly preferably 30 mass% or more. Moreover, the maximum ratio which can be contained is preferably 40% by mass or less, more preferably 37% by mass or less, further preferably 34% by mass or less, and particularly preferably 32% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (3.4) is a component (B), the content thereof is preferably 2% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 4% by mass, more preferably 6% by mass or more, still more preferably 8% by mass or more, more preferably 10% by mass or more, still more preferably 12% by mass or more, still more preferably 14% by mass or more, still more preferably 16% by mass or more. The above is more preferably 18% by mass or more, still more preferably 20% by mass or more, and particularly preferably 22% by mass or more. Moreover, the maximum ratio which can be contained is preferably 30% by mass or less, more preferably 25% by mass or less, further preferably 23% by mass or less, and particularly preferably 21% by mass or less.

Further, as the compound represented by the formula (I), a compound represented by the formula (I-3) is present.

(wherein R ¹³ represents an alkyl group having 1 to 5 carbon atoms, and R ¹⁵ represents an alkoxy group having 1 to 4 carbon atoms)

Further, the compound represented by the formula (I-3) may be exemplified by the formulae (4.1) to (4.3). The compound represented by the formula (4.3) is preferably a compound represented by the formula (4.3).

In the case of the liquid crystal composition of the present invention, when the compound represented by the formula (4.1) is a component (B), the content thereof is preferably 10% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 20% by mass or more, more preferably 25% by mass or more, and particularly preferably 30% by mass or more. Further, the maximum ratio which can be contained is preferably 50% by mass or less, more preferably 45% by mass or less, and still more preferably 40% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (4.2) is a component (B), the content thereof is preferably 2% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 3 mass%, more preferably 4 mass% or more, more preferably 10 mass% or more, more preferably 12 mass% or more, still more preferably 14 mass% or more, more preferably 16 mass% or more, more preferably 20 mass%. The above is more preferably 23 mass% or more, still more preferably 26 mass% or more, and particularly preferably 30 mass% or more. Moreover, the maximum ratio which can be contained is preferably 40% by mass or less, more preferably 37% by mass or less, further preferably 34% by mass or less, and particularly preferably 32% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (4.3) is a component (B), the content thereof is preferably 2% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 4% by mass, more preferably 6% by mass or more, still more preferably 8% by mass or more, more preferably 10% by mass or more, still more preferably 12% by mass or more, still more preferably 14% by mass or more, still more preferably 16% by mass or more. The above is more preferably 18% by mass or more, still more preferably 20% by mass or more, and particularly preferably 22% by mass or more. Further, the maximum ratio which can be contained is preferably 30% by mass or less, more preferably 25 mass% or less, further preferably 24 mass% or less, and particularly preferably 23 mass% or less.

Further, as the compound represented by the formula (I), a compound represented by the formula (I-4) is present.

(wherein R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms)

Further, the compound represented by the formula (I-4) may, for example, be a compound selected from the group consisting of compounds represented by the formulae (5.1) to (5.4), and preferably, the formula (5.2) to the formula (5.4) Expressed as a compound.

In the case of the liquid crystal composition of the present invention, when the compound represented by the formula (5.2) is a component (B), the content thereof is preferably 4% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 6% by mass or more, more preferably 12% by mass or more, and particularly preferably 20% by mass or more. Moreover, the maximum ratio which can be contained is preferably 40% by mass or less, more preferably 30% by mass or less, and still more preferably 25% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (5.3) constitutes the component (B), the content thereof is preferably 2 with respect to the total amount of the liquid crystal composition of the present invention. The mass% or more is more preferably 3% by mass, more preferably 5% by mass or more, still more preferably 7% by mass or more, still more preferably 9% by mass or more, still more preferably 11% by mass or more, and still more preferably 13% by mass or more. More preferably, it is 15 mass or more, more preferably 17 mass% or more, still more preferably 19 mass% or more, and particularly preferably 21 mass% or more. Moreover, the maximum ratio which can be contained is preferably 35 mass% or less, more preferably 30 mass% or less, further preferably 25% by mass or less, and particularly preferably 23 mass% or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (5.4) is a component (B), the content thereof is preferably 2% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 4% by mass, more preferably 6% by mass or more, still more preferably 8% by mass or more, more preferably 10% by mass or more, still more preferably 12% by mass or more, still more preferably 14% by mass or more, still more preferably 16% by mass or more. The above is more preferably 18% by mass or more, still more preferably 20% by mass or more, and particularly preferably 22% by mass or more. Moreover, the maximum ratio which can be contained is preferably 30% by mass or less, more preferably 25% by mass or less, further preferably 24% by mass or less, and particularly preferably 23% by mass or less.

Further, as the compound represented by the formula (I), a compound represented by the formula (I-5) is present.

(wherein R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms)

Further, the compound represented by the formula (I-5) may be a compound selected from the group consisting of compounds represented by the formulae (6.1) to (6.6), and among them, the formula (6.3) and the formula (6.4) are preferably used. a compound represented by the formula (6.6).

In the case of the liquid crystal composition of the present invention, the compound represented by the formula (6.3) is a component (B), and the content thereof is preferably 5% by mass or more based on the total amount of the liquid crystal composition of the present invention. It is preferably contained in an amount of 10% by mass or more, more preferably 12% by mass or more, and particularly preferably 20% by mass or more. Moreover, the maximum ratio which can be contained is preferably 40% by mass or less, more preferably 30% by mass or less, and still more preferably 25% by mass or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (6.4) is a component (B), the content thereof is preferably 3% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 5% by mass, more preferably 7% by mass or more, still more preferably 8% by mass or more, more preferably 9% by mass or more, still more preferably 11% by mass or more, more preferably 13% by mass or more, still more preferably 15% by mass or more. More preferably, it is 17 mass% or more, more preferably 19 mass% or more, and particularly preferably 21 mass% or more. Moreover, the maximum ratio which can be contained is preferably 35 mass% or less, more preferably 30 mass% or less, further preferably 25% by mass or less, and particularly preferably 23 mass% or less.

In the liquid crystal composition of the present invention, when the compound represented by the formula (6.6) is a component (B), the content thereof is preferably 2% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 4% by mass, more preferably 5% by mass or more, still more preferably 6% by mass or more, more preferably 9% by mass or more, still more preferably 12% by mass or more, still more preferably 14% by mass or more, still more preferably 16% by mass or more. More preferably, it is 18 mass% or more, more preferably 20 mass% or more, and particularly preferably 22 More than % by mass. Moreover, the maximum ratio which can be contained is preferably 30% by mass or less, more preferably 25% by mass or less, further preferably 24% by mass or less, and particularly preferably 23% by mass or less.

Further, as the compound represented by the formula (I), a compound represented by the formula (I-6) is present.

(wherein R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ¹¹ and X ¹² respectively Independently indicating a fluorine atom or a hydrogen atom)

Further, the compound represented by the formula (I-6) is preferably a compound represented by the formula (7.1).

In the liquid crystal composition of the present invention, when the compound represented by the formula (7.1) is a component (B), the content thereof is preferably 2% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 4% by mass, more preferably 5% by mass or more, still more preferably 6% by mass or more, more preferably 9% by mass or more, still more preferably 12% by mass or more, still more preferably 14% by mass or more, still more preferably 16% by mass or more. The above is more preferably 18% by mass or more, still more preferably 20% by mass or more, and particularly preferably 22% by mass or more. Moreover, the maximum ratio which can be contained is preferably 30% by mass or less, more preferably 25% by mass or less, further preferably 24% by mass or less, and particularly preferably 23% by mass or less.

Further, as the compound represented by the formula (I), a compound represented by the formula (I-7) is present.

[Chemistry 13]

(wherein R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ¹¹ and X ¹² respectively Independently indicating a fluorine atom or a hydrogen atom)

Further, the compound represented by the formula (I-7) is preferably a compound represented by the formula (8.1).

In the liquid crystal composition of the present invention, when the compound represented by the formula (8.1) is a component (B), the content thereof is preferably 1% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. 2% by mass, more preferably 3% by mass or more, still more preferably 4% by mass or more, more preferably 6% by mass or more, still more preferably 8% by mass or more, still more preferably 10% by mass or more, still more preferably 12% by mass or more More preferably, it is 15 mass% or more, more preferably 18 mass% or more, and particularly preferably 21 mass% or more. Moreover, the maximum ratio which can be contained is preferably 30% by mass or less, more preferably 25% by mass or less, further preferably 24% by mass or less, and particularly preferably 22% by mass or less.

Further, as the compound represented by the formula (I), a compound represented by the formula (I-8) is present.

(wherein R ¹⁶ and R ¹⁷ each independently represent an alkenyl group having 2 to 5 carbon atoms)

The type of the compound which can be combined is not particularly limited, and it is preferably one to three types in combination depending on the properties required for solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

In the liquid crystal composition of the present invention, the compound represented by the formula (I-8) In the case of the component (B), the content thereof is preferably 5% by mass or more, more preferably 10% by mass, still more preferably 15% by mass or more, and still more preferably 20% based on the total amount of the liquid crystal composition of the present invention. The mass% or more is more preferably 25% by mass or more, more preferably 30% by mass or more, more preferably 35 or more, still more preferably 40 or more, more preferably 45% by mass or more, and still more preferably 50% by mass or more. More preferably, it is 55 mass% or more. Moreover, the maximum ratio which can be contained is preferably 65% by mass or less, more preferably 60% by mass or less, further preferably 58% by mass or less, and particularly preferably 56% by mass or less.

Further, the compound represented by the formula (I-8) may be a compound selected from the group consisting of compounds represented by the formula (9.1) to the formula (9.10), and among them, the formula (9.2) and the formula (9.4) are preferably used. a compound represented by the formula (9.7).

[Chemical 3]

In the liquid crystal composition of the present invention, one or two or more kinds of the compounds represented by the formula (III) may be contained in the component (B) which is a component having a dielectric property.

(R ³¹ and R ³² each independently represent an alkenyl group having 2 to 5 carbon atoms or an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms)

The compound represented by the formula (III) is, for example, a compound selected from the group consisting of the compounds represented by the formula (15.1) or the formula (15.2), and more preferably a compound represented by the formula (15.1).

In the case of the compound (B) represented by the formula (15.1), the content of the liquid crystal composition of the present invention is preferably 3 in terms of the required solubility or birefringence. The mass% or more is more preferably 6% by mass or more, and still more preferably 8% by mass or more. Further, the maximum ratio which can be contained is preferably 25% by mass or less, more preferably 20% by mass or less, still more preferably 15% by mass or less.

Further, as the compound represented by the formula (III), a compound represented by the formula (III-1) is present.

[Chemical 6]

(R ³³ represents an alkenyl group having 2 to 5 carbon atoms, and R ³² each independently represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms)

It is preferable to adjust the content according to the performance required for solubility at a low temperature, transfer temperature, electrical reliability, birefringence, etc., and in the case of the component (B), the content thereof is preferably 4% by mass or more. It is preferably 6% by mass or more, and more preferably 10% by mass or more. Further, the maximum ratio which can be contained is preferably 23% by mass or less, more preferably 18% by mass or less, still more preferably 13% by mass or less.

The compound represented by the formula (III-1) is, for example, a compound represented by the formula (16.1) or the formula (16.2).

(R ³¹ represents an alkyl group having 1 to 5 carbon atoms, and R ³⁴ represents an alkoxy group having 1 to 4 carbon atoms)

Further, the compound represented by the formula (III-2) is, for example, a compound selected from the group consisting of the compounds represented by the formulae (17.1) to (17.3), and more preferably a compound represented by the formula (17.3).

[Chemical 6]

When the compound represented by the formula (17.3) is a component (B), the content thereof is preferably adjusted according to the properties required for solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., preferably 4% by mass or more, more preferably 6% by mass or more, further preferably 10% by mass or more. Further, the maximum ratio which can be contained is preferably 23% by mass or less, more preferably 18% by mass or less, still more preferably 13% by mass or less.

In the liquid crystal composition of the present invention, one or two or more compounds represented by the formula (II) may be contained in the component (B) having a dielectric property. The type of the compound which can be combined is not particularly limited, and it is preferably one to three kinds of these compounds depending on the properties required for solubility at low temperature, transfer temperature, electrical reliability, and birefringence. It is preferably contained in one to four kinds, and more preferably in one to five or more.

(R ²¹ and R ²² each independently represent an alkenyl group having 2 to 5 carbon atoms or an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; and A ² represents a 1,4-extension ring; Hexyl or 1,4-phenylene, Q ² represents a single bond, -COO-, -CH ₂ -CH ₂ - or -CF ₂ O-)

The compound represented by the formula (II) is, for example, a compound represented by the formula (II-1).

(R ²¹ and R ²² each independently represent an alkenyl group having 2 to 5 carbon atoms or an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms)

Further, the compound represented by the formula (II-1) is, for example, preferably a compound represented by the formula (10.1).

[Chemical 3]

In the case where the compound represented by the formula (10.1) is a component (B), the content thereof is preferably adjusted according to the properties required for solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., preferably. It is 4% by mass or more, more preferably 8% by mass or more, and still more preferably 12% by mass or more. Moreover, the maximum ratio which can be contained is preferably 24% by mass or less, more preferably 18% by mass or less, and still more preferably 14% by mass or less.

Further, as the compound represented by the formula (II), for example, a compound represented by the formula (II-2) is present.

(R ²³ represents an alkenyl group having 2 to 5 carbon atoms, and R ²⁴ represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms)

Further, the compound represented by the formula (II-2) is preferably, for example, a compound represented by the formula (11.1) or/and the formula (11.2).

The component (B) may contain a compound represented by the formula (11.1) or a compound represented by the formula (11.2), depending on properties required for solubility at low temperature, transfer temperature, electrical reliability, and birefringence. Both the compound represented by the formula (11.1) and the compound represented by the formula (11.2) may be contained. In the case of the compound (B) represented by the formula (11.1), the content thereof is preferably 3% by mass, more preferably 5% by mass or more, more preferably 5% by mass or more based on the total amount of the liquid crystal composition of the present invention. 7 mass% or more, more preferably 9% by mass or more, more preferably 11% by mass or more, still more preferably 12% by mass or more, more preferably 13% by mass or more, still more preferably 18% by mass or more Especially, it is 21% by mass or more. Moreover, the maximum ratio which can be contained is preferably 40% by mass or less, more preferably 30% by mass or less, and still more preferably 25% by mass or less. Further, in the case of the compound (B) represented by the formula (11.2), the content thereof is preferably 3% by mass, more preferably 5% by mass or more, based on the total amount of the liquid crystal composition of the present invention. The content is preferably 8 mass% or more, more preferably 10 mass% or more, more preferably 12 mass% or more, still more preferably 15 mass% or more, more preferably 17 mass% or more, and still more preferably 19 mass% or more. Moreover, the maximum ratio which can be contained is preferably 40% by mass or less, more preferably 30% by mass or less, and still more preferably 25% by mass or less. In the case where the component (B) contains both the compound represented by the formula (11.1) and the compound represented by the formula (11.2), the total of the compounds of the two is preferable to the total amount of the liquid crystal composition of the present invention. It is 15% by mass or more, more preferably 19% by mass or more, further preferably 24% by mass or more, and particularly preferably 30% by mass or more. Further, the maximum ratio which can be contained is preferably 45 mass% or less, more preferably 40 mass% or less, still more preferably 3 mass% or less.

Further, examples of the compound represented by the formula (II) include a compound represented by the formula (II-3).

(R ²⁵ represents an alkyl group having 1 to 5 carbon atoms, and R ²⁴ represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms)

Further, the compound represented by the formula (II-3) is, for example, preferably a compound represented by the formula (12.1) to the formula (12.3).

[Chemical 3]

The component (B) may also contain a compound represented by the formula (12.1) or a compound represented by the formula (12.2), depending on the properties required for solubility at low temperature, transfer temperature, electrical reliability, and birefringence. Further, it may contain both the compound represented by the formula (12.1) and the compound represented by the formula (12.2). In the case of the compound (B) represented by the formula (12.1), the content thereof is preferably 3% by mass, more preferably 5% by mass or more, more preferably 5% by mass or more based on the total amount of the liquid crystal composition of the present invention. 7 mass% or more, more preferably 9% by mass or more, more preferably 11% by mass or more, still more preferably 12% by mass or more, more preferably 13% by mass or more, still more preferably 18% by mass or more, and particularly preferably 21% by mass %the above. Moreover, the maximum ratio which can be contained is preferably 40% by mass or less, more preferably 30% by mass or less, and still more preferably 25% by mass or less. Further, in the case of the compound (B) represented by the formula (12.2), the content thereof is preferably 3% by mass, more preferably 5% by mass or more, based on the total amount of the liquid crystal composition of the present invention. The content is preferably 8 mass% or more, more preferably 10 mass% or more, more preferably 12 mass% or more, still more preferably 15 mass% or more, more preferably 17 mass% or more, and still more preferably 19 mass% or more. Moreover, the maximum ratio which can be contained is preferably 40% by mass or less, more preferably 30% by mass or less, and still more preferably 25% by mass or less. In the case where the component (B) contains both the compound represented by the formula (12.1) and the compound represented by the formula (12.2), the total of the compounds of the two is preferable to the total amount of the liquid crystal composition of the present invention. It is 15% by mass or more, more preferably 19% by mass or more, further preferably 24% by mass or more, and particularly preferably 30% by mass or more. Further, the maximum ratio which can be contained is preferably 45 mass% or less, more preferably 40 mass% or less, still more preferably 3 mass% or less.

In addition, the content of the compound represented by the formula (12.3) of the component (B) is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, even more preferably the total amount of the liquid crystal composition of the present invention. 0.2% by mass or more. Moreover, the maximum ratio which can be contained is preferably 2% by mass or less, more preferably 1% by mass or less, and still more preferably 0.5% by mass or less. The compound represented by the formula (12.3) is preferably an optically active substance.

Furthermore, the compound represented by the formula (II-3) is, for example, a compound represented by the formula (II-3-1).

(R ²⁵ represents an alkyl group having 1 to 5 carbon atoms, and R ²⁶ represents an alkoxy group having 1 to 4 carbon atoms)

Furthermore, the compound represented by the formula (II-3-1) may, for example, be a compound represented by the formula (13.1) to the formula (12.4), and more preferably a compound represented by the formula (13.3).

When the compound represented by the formula (13.3) is a component (B), the content thereof is preferably adjusted according to the properties required for solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., preferably 1% by mass or more, more preferably 4% by mass or more, further preferably 8% by mass or more. Moreover, the maximum ratio which can be contained is preferably 24% by mass or less, more preferably 18% by mass or less, and still more preferably 14% by mass or less.

Further, as the compound represented by the formula (II), for example, a compound represented by the formula (II-4) is present.

(R ²¹ and R ²² each independently represent an alkenyl group having 2 to 5 carbon atoms or an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms)

The component (B) may contain only one of these compounds, or may contain two or more of them, and it is preferable to adjust suitably according to the required performance. The type of the compound which can be combined is not particularly limited, and it is preferably one or two kinds from the compounds, depending on the properties required for solubility at low temperature, transfer temperature, electrical reliability, and birefringence. There are 1 to 3 kinds of good.

Further, the compound represented by the formula (II-4) may, for example, be a compound represented by the formula (14.1) to the formula (14.5), and more preferably a compound represented by the formula (14.2) or/and the formula (14.5).

In the case of the compound (B) represented by the formula (14.2), the content thereof is preferably 1% by mass or more, more preferably 2%, based on the total amount of the liquid crystal composition of the present invention. The amount is at least 5% by mass, more preferably 3% by mass or more, still more preferably 4% by mass or more, and particularly preferably 5% by mass or more. Further, the maximum ratio which can be contained is preferably 15% by mass or less, more preferably 12% by mass or less, still more preferably 7% by mass or less.

In the case of the compound (B) represented by the formula (14.5), the content thereof is preferably 1% by mass or more, more preferably 2% by mass or more, more preferably the total amount of the liquid crystal composition of the present invention. It is 3% by mass or more, more preferably 4% by mass or more, and particularly preferably 5% by mass or more. Further, the maximum ratio which can be contained is preferably 15% by mass or less, more preferably 12% by mass or less, still more preferably 7% by mass or less.

Further, the liquid crystal composition of the present invention may further contain one or two or more compounds selected from the group represented by the formula (IV) in the component (B) having a dielectric neutrality.

(wherein R ⁴¹ and R ⁴² each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms; and X ⁴¹ and X ⁴² each independently represent a hydrogen atom or a fluorine atom)

The type of the compound which can be combined is not particularly limited, and it is preferably one to three kinds of such compounds, depending on the properties required for solubility at low temperature, transfer temperature, electrical reliability, and birefringence. It is preferably one to four, more preferably one to five, and particularly preferably one to six.

Furthermore, examples of the compound represented by the formula (IV) include a compound selected from the group consisting of compounds represented by the formula (IV-1).

(wherein R ⁴³ and R ⁴⁴ each independently represent an alkyl group having 1 to 5 carbon atoms)

Furthermore, the compound represented by the formula (IV-1) may, for example, be a compound represented by the formula (18.1) to the formula (18.9), and among them, the formula (18.1), the formula (18.3), the formula (18.4), and the formula are preferred. (18.6) and a compound represented by the formula (18.9).

In the case of the compound (B) represented by the formula (18.1) or the formula (18.2), the content thereof is preferably 1% by mass or more, more preferably 2% by mass based on the total amount of the liquid crystal composition of the present invention. % or more, further preferably 3% by mass or more. Further, the maximum ratio which can be contained is preferably 10% by mass or less, more preferably 6% by mass or less, still more preferably 4% by mass or less.

In the case of the compound (B) represented by the formula (18.4) or the formula (18.5), the content thereof is preferably 1% by mass or more, more preferably 2% by mass or more, and still more preferably 3% by mass. The above is particularly preferably 9% by mass or more. Further, the maximum ratio which can be contained is preferably 25% by mass or less, more preferably 15% by mass or less, still more preferably 10% by mass or less.

Furthermore, in the case of the compound (B) represented by the formula (18.3), the content thereof is preferably 5% by mass or more, and more preferably 7% by mass or more based on the total amount of the liquid crystal composition of the present invention. Further, it is preferably 9% by mass or more. Moreover, the maximum ratio which can be contained is preferably 25% by mass or less, more preferably 20% by mass or less, still more preferably 10% by mass or less.

When the compound represented by the formula (18.6) or the formula (18.7) is a component (B), the content thereof is preferably 4% by mass or more, more preferably 6% by mass or more, and still more preferably 10% by mass or more. More preferably, it is 14% by mass or more. Further, the maximum ratio which can be contained is preferably 25% by mass or less, more preferably 20% by mass or less, still more preferably 15% by mass or less.

In the case of the compound (B) represented by the formula (18.8) or the formula (18.9), the content thereof is preferably 4% by mass or more, more preferably 6% by mass or more, and still more preferably 10% by mass or more. More preferably, it is 14% by mass or more. Further, the maximum ratio which can be contained is preferably 25% by mass or less, more preferably 20% by mass or less, still more preferably 15% by mass or less.

The type of the compound which can be combined is not particularly limited, and it is preferably one to three kinds from the above compounds, more preferably one to four kinds, and particularly preferably one to five kinds. on. Further, when the molecular weight distribution of the selected compound is broad, it is effective for solubility. Therefore, for example, one compound selected from the formula (18.1) or (18.2) is preferably selected from the formula (18.4). Or one of the compounds represented by (18.5), one compound selected from the formula (18.6) or the formula (18.7), and one selected from the compounds represented by the formula (18.8) or (18.9) One compound, and these are combined as appropriate.

Further, examples of the compound represented by the formula (IV) include compounds represented by the formula (IV-2).

(wherein R ⁴⁵ and R ⁴⁶ each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 4 to 5 carbon atoms, and at least one of them represents an alkenyl group having 4 to 5 carbon atoms, X ⁴¹ , X ⁴² independently represents a hydrogen atom or a fluorine atom)

Among these, the type of the compound which can be combined is not particularly limited, and it is preferably one type from the compounds according to the properties required for solubility at low temperature, transfer temperature, electrical reliability, and birefringence. It is more preferable to contain one type to four types, more preferably one type to five types, and more preferably one type to six or more types.

Furthermore, the compound represented by the formula (IV-2) is, for example, a compound represented by the formula (19.1) to the formula (18.8), and among them, a compound represented by the formula (19.2) is preferred.

[Chem. 21]

The component (B) may contain only one of these compounds, or may contain two or more kinds thereof, and is preferably appropriately combined according to the required refractive index anisotropy or solubility at room temperature and freezing point. Solubility is affected by the structure of the alkyl groups at both ends of the compound, so care is required.

For example, regarding the neutral component (B), it is expressed by the formula (19.1) or (19.2) When the compound is a component (B), the content thereof is preferably 0.5% by mass or more and less than 14% by mass, more preferably 0.5% by mass or more, based on the total amount of the liquid crystal composition of the present invention. It is preferably 5% by mass, more preferably 1% by mass or more and less than 5% by mass, and particularly preferably 1% by mass or more and less than 4% by mass.

Further, in the case where the neutral component (B) is in the case of the compound component (B) represented by the formula (19.3) or (19.4), the content of the liquid crystal composition of the present invention is preferably contained in the total amount of the liquid crystal composition. 0.5% by mass or more and less than 17% by mass, more preferably 6% by mass or more and less than 17% by mass, more preferably 8% by mass or more and less than 17% by mass, and further preferably 10% by mass or more It is not more than 17% by mass, more preferably 12% by mass or more and less than 17% by mass, and particularly preferably 14% by mass or more and less than 16% by mass.

Further, in the case where the neutral component (B) is in the case of the compound component (B) represented by the formula (19.5) or (19.6), the content of the liquid crystal composition of the present invention is preferably contained in the total amount of the liquid crystal composition. 5.5% by mass or more and less than 15% by mass, more preferably 9% by mass or more and less than 14% by mass.

Further, in the case of the compound (B) represented by the formula (19.7) or the formula (19.8), the content thereof is preferably 4% by mass or more, more preferably 6% by mass or more, and still more preferably 10% by mass. More than %, especially preferably 14% by mass or more. Further, the maximum ratio which can be contained is preferably 25% by mass or less, more preferably 20% by mass or less, still more preferably 15% by mass or less.

The type of the compound which can be combined is not particularly limited, and is preferably one to three kinds from the above compounds, more preferably one to four, and particularly preferably one to five or more. Further, when the molecular weight distribution of the selected compound is broad, it is effective for solubility. Therefore, for example, one compound selected from the formula (19.1) or (19.2) is preferably selected from the formula (19.3). Or one of the compounds represented by (19.4), one compound selected from the formula (19.5) or the formula (19.6), and selected from the compounds represented by the formula (19.7) or (19.8) One compound, and these are combined as appropriate.

In the liquid crystal composition of the present invention, one or two or more kinds of the compounds represented by the formula (VI) may be further contained in the component (B) having a dielectric property.

(wherein R ¹¹ and R ¹² each independently represent a linear alkyl group having 1 to 10 carbon atoms, an alkoxy group or a linear alkenyl group having 2 to 10 carbon atoms)

The type of the compound which can be combined is not particularly limited, and it is preferably one to three kinds of these compounds depending on the properties required for solubility at low temperature, transfer temperature, electrical reliability, and birefringence. It is preferably contained in one to four kinds, and more preferably in one to five or more. Further, the maximum ratio which can be contained is preferably 35% by mass or less, more preferably 25% by mass or less, still more preferably 15% by mass or less.

Specific examples of the compound represented by the formula (VI) include the compounds listed below.

[化17]

[Chemistry 19]

The liquid crystal composition of the invention of the present invention can be further composed of a dielectrically neutral component (B) One or two or more kinds of the compounds represented by the formula (VII) are contained therein.

(wherein R ⁷¹ and R ⁷² each independently represent a linear alkyl group or alkoxy group having 1 to 10 carbon atoms and a linear alkenyl group having 4 to 10 carbon atoms)

The type of the compound which can be combined is not particularly limited, and it is preferably one to three kinds of these compounds depending on the properties required for solubility at low temperature, transfer temperature, electrical reliability, and birefringence. It is preferably contained in one to four kinds, and more preferably in one to five or more. Further, the maximum ratio which can be contained is preferably 35% by mass or less, more preferably 25% by mass or less, still more preferably 15% by mass or less.

Specific examples of the compound represented by the formula (VII) include the compounds listed below.

[化25]

In the case of containing 73% by mass or more of the component (A) or 81% by mass or more of the component (B), the liquid crystal composition of the invention may be preferably used.

The liquid crystal composition of the present invention may further contain a compound represented by the formula (2.5).

The component (B) is preferably adjusted to the content of the compound represented by the formula (2.5) according to the properties required for solubility at a low temperature, transfer temperature, electrical reliability, birefringence, etc., in the case of the component (B). In the case of the content of the liquid crystal composition of the present invention, it is preferably contained in an amount of 11% by mass or more, more preferably 15% by mass, still more preferably 23% by mass, and further preferably It is contained in an amount of 26% by mass or more, and particularly preferably 28% by mass or more.

The liquid crystal composition of the present invention has a Δ ε of +3.5 or more at 25 ° C, more preferably +3.5 to +20.0, further preferably +3.5 to +15.0. Δn at 25 ° C is 0.08 to 0.14, more preferably It is 0.09~0.13. If it is described in more detail, it is preferably 0.10 to 0.13 in the case of a thinner cell gap, preferably 0.08 to 0.10 in the case of a thicker cell gap. 20 ° C The lower η is 10 to 45 mPa ‧ , more preferably 10 to 25 mPa ‧ s, and particularly preferably 10 to 20 mPa ‧ s. The Tni is 60 ° C to 120 ° C, more preferably 70 ° C to 110 ° C, and particularly preferably 75 ° C to 90 ° C.

The liquid crystal composition of the present invention may contain, in addition to the above compound, a usual nematic liquid crystal, a smectic liquid crystal, a cholesteric liquid crystal or the like.

In the liquid crystal composition of the present invention, in order to produce a PS (Polymer Sustained) mode, a PSA (Polymer Sustained Alignment) mode or a PSV (Polymer Sustained Vertical Alignment) A liquid crystal display element such as a stable vertical alignment mode may also contain a polymerizable compound. Examples of the polymerizable compound that can be used include a photopolymerizable monomer which is polymerized by an energy ray such as light, and examples of the structure include, for example, a biphenyl derivative or a biphenyl derivative, and a plurality of six members. A polymerizable compound of a liquid crystal skeleton in which a ring is bonded. More specifically, it is preferably of the formula (XX)

(wherein, X ²⁰¹ and X ²⁰² each independently represent a hydrogen atom or a methyl group, and Sp ²⁰¹ and Sp ²⁰² each independently represent a single bond, an alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s - (wherein, s represents an integer of 2 to 7, the oxygen atom is set to be bonded to the aromatic ring), and Z ²⁰¹ represents -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, - CF ₂ O-, -OCF ₂ -, -CH ₂ CH ₂ -, -CF ₂ CF ₂ -, -CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO -CH=CH-, -COO-CH ₂ CH ₂ -, -OCO-CH ₂ CH ₂ -, -CH ₂ CH ₂ -COO-, -CH ₂ CH ₂ -OCO-, -COO-CH ₂ -, - OCO-CH ₂ -, -CH ₂ -COO-, -CH ₂ -OCO-, -CY ¹ =CY ² - (wherein, Y ¹ and Y ² each independently represent a fluorine atom or a hydrogen atom), -C≡ C- or a single bond, M ²⁰¹ represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a single bond, and any hydrogen atom of all 1,4-phenylene groups in the formula may be subjected to fluorine. A difunctional monomer represented by an atom).

Preferably, both of X ²⁰¹ and X ²⁰² represent a diacrylate derivative of a hydrogen atom, and any of X ²⁰¹ and X ²⁰² has a methyl dimethacrylate derivative, and preferably one of them represents a hydrogen atom. The other represents a compound of a methyl group. The polymerization rate of these compounds is the fastest in the diacrylate derivative, the dimethacrylate derivative is slow, and the asymmetric compound is located between the two, and the preferred aspect can be used depending on the use thereof. Among the PSA display elements, a dimethacrylate derivative is particularly preferred.

Sp ²⁰¹ and Sp ²⁰² each independently represent a single bond, an alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s -, and in the PSA display element, at least one of them is a single bond. Preferably, all of the compounds represent a single bond, or one represents a single bond and the other represents an alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s -. In this case, an alkyl group having 1 to 4 carbon atoms is preferable, and s is preferably 1 to 4.

Z ^{201 is} preferably -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -CF ₂ O-, -OCF ₂ -, -CH ₂ CH ₂ -, -CF ₂ CF ₂ - or The key is more preferably -COO-, -OCO- or a single bond, and particularly preferably a single bond.

M ²⁰¹ represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a single bond in which any hydrogen atom may be substituted by a fluorine atom, preferably a 1,4-phenylene group or a single bond. In the case where C represents a ring structure other than a single bond, Z ^{201 is} also preferably a linking group other than a single bond. When M ²⁰¹ is a single bond, Z ^{201 is} preferably a single bond.

In these respects, in the general formula (XX), the ring structure between Sp ²⁰¹ and Sp ²⁰² is specifically preferably the structure described below.

In the general formula (XX), M ²⁰¹ represents a single bond, and when the ring structure is formed of two rings, it preferably represents the following formula (XXa-1) to formula (XXa-5), more preferably From the formula (XXa-1) to the formula (XXa-3), it is particularly preferred to represent the formula (XXa-1).

(where the two ends are set to be bonded to Sp ²⁰¹ or Sp ²⁰² )

The polymerizable compound containing these skeletons is most suitable for a PSA type liquid crystal display element because of the alignment restriction force after polymerization, and a good alignment state can be obtained, so that display unevenness is suppressed or display unevenness is not caused at all.

In the above aspect, the polymerizable monomer is preferably a compound of the formula (XX-1) to (XX-4), and most preferably, it is a formula (XX-2).

[化30]

(wherein, Sp ²⁰ represents an alkylene group having 2 to 5 carbon atoms)

In the case where a monomer is added to the liquid crystal composition of the present invention, polymerization may be carried out even in the absence of a polymerization initiator, and a polymerization initiator may be contained in order to promote polymerization. Examples of the polymerization initiator include benzoin ethers, benzophenones, acetophenones, benzoin ketals, and fluorenylphosphine oxides.

The liquid crystal composition containing the polymerizable compound of the present invention is polymerized by ultraviolet irradiation to impart a liquid crystal alignment ability, and is used for controlling the light transmittance of the liquid crystal by the birefringence of the liquid crystal composition. element. As a liquid crystal display element, an AM-LCD (Active Matrix-Liquid Crystal Display), a TN-LCD (Twisted Nematic-Liquid Crystal Display), and an STN-LCD (Super Twisted) Nematic-Liquid Crystal Display, PTC-LCD (Optically Compensated Bend-Liquid Crystal Display) and IPS-LCD (In-Plane Switching-Liquid Crystal Display) In-plane switching type liquid crystal display elements are useful, and are particularly useful for AM-LCDs, and can be used for transmissive or reflective liquid crystal display elements.

Two substrates of the liquid crystal cell used for the liquid crystal display element can be used as A transparent material of glass or plastic, one of which may also be an opaque material such as tantalum. The transparent substrate having a transparent electrode layer can be obtained, for example, by sputtering indium tin oxide (ITO) on a transparent substrate such as a glass plate.

The color filter can be produced, for example, by a pigment dispersion method, a printing method, a plating method, a dyeing method, or the like. When a method of producing a color filter by a pigment dispersion method is described as an example, a curable coloring composition for a color filter is applied onto the transparent substrate, patterned, and heated or light-applied. Irradiation causes it to harden. By performing this step for each of three colors of red, green, and blue, a pixel portion for a color filter can be produced. In addition to this, a pixel electrode provided with an active element such as a TFT, a thin film diode, a metal insulator, or a metal specific resistance element may be provided on the substrate.

The substrate is opposed to each other such that the transparent electrode layer is inside. At this time, the interval between the substrates can also be adjusted via the spacer. In this case, it is preferable to adjust so that the thickness of the obtained light control layer becomes 1 to 100 μm. More preferably, it is 1.5 to 10 μm. When a polarizing plate is used, it is preferable to adjust the product of the refractive index anisotropy Δn of the liquid crystal and the cell thickness d so that the contrast is maximized. Further, in the case where two polarizing plates are present, the polarization axes of the respective polarizing plates can be adjusted to adjust the viewing angle or contrast to be good. Further, a retardation film for increasing the viewing angle can also be used. Examples of the spacer include a columnar spacer made of glass particles, plastic particles, alumina particles, a photoresist material, or the like. Thereafter, a sealing agent such as an epoxy thermosetting composition is screen-printed on the substrate in a shape in which a liquid crystal injection port is provided, and the substrates are bonded to each other to be heated to cure the sealing agent.

A method of sandwiching a liquid crystal composition containing a polymerizable compound between two substrates can be carried out by a usual vacuum injection method, an ODF method, or the like, and the vacuum injection method does not cause dripping marks, but has a trace of residual injection. Problem, the ODF method is used in the invention of the present invention, and can be preferably used depending on the display element to be manufactured. In the manufacturing process of the liquid crystal display element of the ODF method, a solvent is used on the substrate of the back sheet or the front plate, and the epoxy is used for the heat treatment of the epoxy. The liquid crystal display element can be manufactured by drawing a liquid crystal composition in a specific amount by dropping a specific amount of the liquid crystal composition therein under degassing, and then bonding the front plate and the back plate. Since the liquid crystal composition of the present invention can stably carry out the dropwise addition of the liquid crystal composition in the ODF step, it can be preferably used.

As a method of polymerizing the polymerizable compound, in order to obtain a good alignment property of the liquid crystal, a moderate polymerization rate is preferable, and therefore it is preferred to polymerize by separately or in combination or alternately irradiating active energy rays such as ultraviolet rays or electron beams. method. For the case of using ultraviolet rays, a polarized light source or a non-polarized light source may be used. In the case where the liquid crystal composition containing the polymerizable compound is sandwiched between the two substrates and polymerized in this state, at least the substrate on the irradiation surface side must have appropriate transparency to the active energy ray. Further, a method of using a mask to polymerize only a specific portion after light irradiation, changing conditions such as an electric field, a magnetic field, or a temperature, thereby changing the alignment state of the unpolymerized portion, and irradiating the active energy ray to carry out polymerization may be used. In particular, when ultraviolet exposure is performed, it is preferred to perform ultraviolet exposure while applying an alternating electric field to the liquid crystal composition containing the polymerizable compound. The applied alternating electric field is preferably an alternating current having a frequency of 10 Hz to 10 kHz, more preferably a frequency of 60 Hz to 10 kHz, and the voltage is selected according to a required pretilt angle of the liquid crystal display element. That is, the pretilt angle of the liquid crystal display element can be controlled by the applied voltage. In the liquid crystal display device of the multi-Domain Vertical Alignment (MVA) mode, it is preferable to control the pretilt angle to 80 to 89.9 degrees from the viewpoint of alignment stability and contrast.

The temperature at the time of irradiation is preferably within a temperature range in which the liquid crystal state of the liquid crystal composition of the present invention is maintained. It is preferred to carry out the polymerization at a temperature close to room temperature, that is, typically 15 to 35 °C. As the lamp for emitting ultraviolet rays, a metal halide lamp, a high pressure mercury lamp, an ultrahigh pressure mercury lamp, or the like can be used. Further, as the wavelength of the ultraviolet ray to be irradiated, it is preferable to irradiate ultraviolet rays in a wavelength region which is not an absorption wavelength region of the liquid crystal composition, and it is preferable to use ultraviolet rays when necessary. The intensity of the ultraviolet ray to be irradiated is preferably from 0.1 mW/cm ² to 100 W/cm ² , more preferably from 2 mW/cm ² to 50 W/cm ² . The energy of the ultraviolet ray to be irradiated can be appropriately adjusted, and is preferably 10 mJ/cm ² to 500 J/cm ² , more preferably 100 mJ/cm ² to 200 J/cm ² . The intensity can also be changed when ultraviolet rays are irradiated. The time for irradiating the ultraviolet rays can be appropriately selected depending on the intensity of the ultraviolet rays to be irradiated, and is preferably from 10 seconds to 3600 seconds, more preferably from 10 seconds to 600 seconds.

The liquid crystal display element using the liquid crystal composition of the present invention is more useful for suppressing high-speed response and display failure, and is particularly useful for active matrix driving liquid crystal display elements, and is applicable to VA mode, PSVA mode, and PSA mode. Liquid crystal display elements for IPS mode, FFS mode or ECB (Electrically Controlled Birefingence) mode.

The IPS mode is a mode in which an electric field is applied in the direction of the surface of the substrate to rotate the liquid crystal molecules in a plane parallel to the substrate, and the driving mode of the light is switched by the change in birefringence, and is mainly applied to a small liquid crystal display element. Further, a driving method called FFS mode having a structure of reducing the width of the pixel electrode of the IPS mode and having advantages of high transmittance, wide viewing angle, high contrast, and low power consumption can be used in addition to the small liquid crystal display element. Suitable for large liquid crystal display elements such as TVs.

Hereinafter, preferred embodiments of the liquid crystal display device of the present invention will be described in detail with reference to the drawings.

Fig. 1 is a cross-sectional view showing a liquid crystal display element having two substrates facing each other, a sealing material provided between the substrates, and a liquid crystal sealed in a sealing region surrounded by the sealing material.

Specifically, the liquid crystal display element includes a backing plate provided with a TFT layer 102 and a pixel electrode 103 on the substrate a100, and a passivation film 104 and an alignment film a105 are provided thereon. a front plate, which is provided with a black matrix 202, a color filter 203, a planarization film (top coat) 201, and a transparent electrode 204 on the substrate b200, and an alignment film b205 is disposed above the substrate b200, and is opposite to the back plate. a sealing material 301 disposed between the substrates; a liquid crystal layer 303 enclosed in a sealing region surrounded by the sealing material; and the sealing material 301 A protrusion 304 is provided on the surface of the substrate that is in contact.

The material of the substrate a or the substrate b is not particularly limited as long as it is substantially transparent, and glass, ceramics, plastic, or the like can be used. As the plastic substrate, cellulose derivatives such as cellulose, triacetyl cellulose, and diethyl phthalocyanine; polycycloolefin derivatives, polyethylene terephthalate, polyethylene naphthalate, etc. can be used. Polyester; polyolefin such as polypropylene, polyethylene; polycarbonate, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyamide, polyimine, polyamidamine, polystyrene, Polyacrylate, polymethyl methacrylate, polyether oxime, polyarylate; and inorganic-organic composite materials such as glass fiber-epoxy resin, glass fiber-acrylic resin, and the like.

Further, when a plastic substrate is used, it is preferable to provide a barrier film. The function of the barrier film is to reduce the moisture permeability of the plastic substrate and improve the reliability of the electrical characteristics of the liquid crystal display device. The barrier film is not particularly limited as long as it has high transparency and low water vapor permeability, and is usually formed by vapor deposition, sputtering, or chemical vapor deposition using an inorganic material such as cerium oxide. , Chemical Vapor Deposition) formed by the film.

In the present invention, the same material may be used as the substrate a or the substrate b, and different materials may be used, and it is not particularly limited. When a glass substrate is used, a liquid crystal display element excellent in heat resistance and dimensional stability can be produced, which is preferable. Moreover, if it is a plastic substrate, it is suitable for the manufacturing method of a roll-to-roll method, and it is suitable for weight reduction or softening, and it is preferable. Further, in order to impart flatness and heat resistance, a combination of a plastic substrate and a glass substrate provides better results.

Further, in the embodiment described later, a substrate is used as the material of the substrate a100 or the substrate b200.

The TFT layer 102 and the pixel electrode 103 are provided on the substrate a100. These are manufactured by the usual array steps. A passivation film 104 and an alignment film a105 are provided thereon to obtain a back sheet.

The passivation film 104 (also referred to as an inorganic protective film) is used to protect the film of the TFT layer. A nitride film (SiNx), an oxide film (SiOx), or the like is usually formed by a chemical vapor deposition (CVD) technique or the like.

Further, the alignment film a105 has a function of aligning liquid crystals, and a polymer material such as polyimide is often used in many cases. As the coating liquid, an alignment agent solution composed of a polymer material and a solvent is used. The alignment film has the possibility of suppressing the adhesion to the sealing material, so that the pattern coating is performed in the sealing region. The coating system uses a printing method such as a soft printing method, and a droplet discharge method such as inkjet. The applied alignment agent solution is subjected to pre-drying to evaporate the solvent, and then cross-linked and hardened by baking. Thereafter, alignment processing is performed in order to express the alignment function.

The alignment treatment is usually carried out by a rubbing method. The polymer film formed as described above is rubbed in one direction using a rubbing cloth composed of fibers such as enamel, thereby producing a liquid crystal alignment ability.

Moreover, there is also a case where the optical alignment method is used. The photo-alignment method is a method of generating an alignment ability by irradiating a polarized light on an alignment film containing a photosensitive organic material, and damage of the substrate or generation of dust due to the rubbing method does not occur. As an example of the organic material in the photo-alignment method, there is a material containing a dichroic dye. As the dichroic dye, those having a group (hereinafter, simply referred to as a photo-alignment group) which induces the alignment of molecules by the Weigert effect due to photochromism or which produces isomerism can be used. Chemical reaction (eg azophenyl), two quantification reaction (eg, cinnamyl), photocrosslinking reaction (eg benzophenone) or photodecomposition reaction (eg poly(imido)) The photoreaction that becomes the cause of the liquid crystal alignment ability. The applied alignment agent solution is obtained by pre-drying to evaporate the solvent, and then irradiating light having any deviation (polarization), whereby an alignment film having an alignment ability in an arbitrary direction can be obtained.

The one side front plate is provided with a black matrix 202, a color filter 203, a planarizing film 201, a transparent electrode 204, and an alignment film b205 on the substrate b200.

The black matrix 202 is produced, for example, by a pigment dispersion method. Specifically, a black colorant which is uniformly dispersed to form a black matrix is uniformly coated on the substrate b200 provided with the barrier film 201. A colored resin liquid forms a colored layer. Then, the colored layer is baked to be hardened. A photoresist is coated thereon and pre-baked. After exposing the photoresist by the mask pattern, development is performed to pattern the colored layer. Thereafter, the photoresist layer is peeled off and the colored layer is baked to complete the black matrix 202.

Alternatively, a photoresist type pigment dispersion liquid can also be used. In this case, after the photoresist pigment dispersion liquid is applied and prebaked, it is immediately exposed by a mask pattern, and then developed to pattern the colored layer. Thereafter, the photoresist layer is peeled off and the colored layer is baked to complete the black matrix 202.

The color filter 203 is produced by a pigment dispersion method, a plating method, a printing method, a dyeing method, or the like. In the case of the pigment dispersion method, a color resin liquid in which a pigment (for example, a red pigment) is uniformly dispersed is applied onto a substrate b200 and baked and cured, and then a photoresist is applied thereon and pre-baked. After the photoresist is exposed by the mask pattern, development is performed to pattern it. Thereafter, the photoresist layer is peeled off and baked again, thereby completing the (red) color filter 203. The order of colors produced is not particularly limited. The green color filter 203 and the blue color filter 203 are formed in the same manner.

The transparent electrode 204 is provided on the color filter 203 (if necessary, a top coat layer (201) is provided on the color filter 203 for surface flattening). The transparent electrode 204 has a higher transmittance, and the smaller the resistance, the better. The transparent electrode 204 is formed of an oxide film of ITO or the like by a sputtering method or the like.

Further, in order to protect the transparent electrode 204, a passivation film is provided on the transparent electrode 204.

The alignment film b205 is the same as the alignment film a105 described above.

The above description of the above-described back sheet and the front sheet used in the present invention has been described. However, the present application is not limited to this specific embodiment, and can be freely changed depending on the desired liquid crystal display element.

The shape of the columnar spacer is not particularly limited, and the horizontal cross section may be various shapes such as a circular shape or a polygonal shape such as a square shape. In consideration of the misalignment tolerance in the step, it is preferable to set the horizontal cross section to a circular shape or Positive polygon. Further, the shape of the protrusion is preferably a truncated cone or a truncated cone.

The material of the columnar spacer is not particularly limited as long as it is a sealing material, an organic solvent for the sealing material, or a material that is insoluble in the liquid crystal, and is preferably a synthetic resin (curing property) in terms of processing and weight reduction. Resin). On the other hand, the protrusions may be provided on the surface of the first substrate on which the sealing material contacts by means of photolithography or droplet discharge. For the above reasons, it is preferred to use a photocurable resin suitable for a method using photolithography or a droplet discharge method.

As an example, a case where the front columnar spacer is obtained by photolithography will be described.

A resin liquid for forming a columnar spacer (excluding a colorant) is applied onto the transparent electrode 204 of the front plate. Then, the resin layer is baked to be hardened. A photoresist is coated thereon and pre-baked. After exposing the photoresist by the mask pattern, development is performed to pattern the resin layer. Thereafter, the photoresist layer is peeled off and the resin layer is baked to complete the columnar spacer.

The position at which the column spacer is formed can be determined to be a desired position according to the mask pattern. Therefore, both the inside of the sealing region of the liquid crystal display element and the outside of the sealing region (the portion to which the sealing material is applied) can be simultaneously produced. Further, the columnar spacer is preferably formed to be on the black matrix without lowering the quality of the sealing region. Columnar spacers produced by photolithography in this manner are sometimes referred to as column spacers or light spacers.

As the material of the spacer, a negative-type water-soluble resin such as PVA (Polyvinyl Alcohol)-carbazole photosensitive resin, or a mixture of a polyfunctional acrylic monomer, an acrylic copolymer, a triazole-based initiator, or the like can be used. . Alternatively, there is also a method of using a color resin in which a colorant is dispersed in a polyimide resin. In the present invention, it is not particularly limited and can be The spacer is obtained by using a known material in accordance with the phase of the liquid crystal or the sealing material to be used.

In this manner, after the columnar spacer is provided on the surface of the front plate which is the sealing region, the sealing material (301 in Fig. 1) is applied to the surface of the backing plate to which the sealing material contacts.

The material of the sealing material is not particularly limited, and a curable resin composition containing a polymerization initiator added to an epoxy-based or acrylic-based photocurable, thermosetting, or photo-curable resin can be used. Further, in order to control moisture permeability, modulus of elasticity, viscosity, and the like, a filler composed of an inorganic substance or an organic substance may be added. The shape of the fillers is not particularly limited, and there are spherical, fibrous, amorphous, and the like. Further, in order to control the cell gap well, a spherical or fibrous gap material having a monodisperse diameter may be mixed, or in order to further strengthen the adhesion to the substrate, a fibrous substance which is easily entangled with the protrusion on the substrate may be mixed. The diameter of the fibrous material used at this time is preferably about 1/5 to 1/10 of the cell gap, and the length of the fibrous material is preferably shorter than the seal coating width.

In addition, the material of the fibrous material is not particularly limited as long as it has a specific shape, and synthetic fibers such as cellulose, polyamide or polyester, or inorganic materials such as glass and carbon can be appropriately selected.

As a method of applying the sealing material, there is a printing method or a dispensing method, and it is preferable to use a dispensing method in which the sealing material is used in a small amount. The coating position of the sealing material is usually provided on the black matrix in such a manner as not to adversely affect the sealing area. In order to form the liquid crystal dropping region of the next step (in a manner in which the liquid crystal does not leak), the sealing material coating shape is set to a closed loop shape.

The liquid crystal is dropped on the closed-loop shape (sealing region) of the sheet before the application of the above-mentioned sealing material. A dispenser is usually used. Since the amount of liquid crystal added is the same as the volume of the liquid crystal cell, it is based on the same amount as the volume obtained by multiplying the height of the columnar spacer by the sealed coating area. However, if the amount of the liquid crystal to be dropped is appropriately adjusted in order to optimize the liquid crystal leakage or the display characteristics in the unit bonding step, the liquid crystal dropping position may be dispersed.

Then, the back sheet is attached to the board before the above sealing material is applied and the liquid crystal is dropped. Specifically, the front plate and the back plate are adsorbed on a platform having a mechanism for adsorbing a substrate such as an electrostatic chuck, and the alignment film b of the front plate faces the alignment film a of the back plate, and is disposed on the other substrate. The position (distance) in contact with the sealing material. In this state, the inside of the system is depressurized. After the decompression is completed, the positions of the two substrates are adjusted while confirming the bonding position between the front plate and the back plate (alignment operation). After the adjustment of the bonding position is completed, the substrate is brought close to the position where the sealing material on the front plate contacts the backing plate. In this state, the inside of the system is filled with an inert gas, and the pressure is gradually released to return to normal pressure. At this time, the front plate and the back plate are bonded together by the atmospheric pressure, and a cell gap is formed at the height position of the columnar spacer. In this state, the sealing material is irradiated with ultraviolet rays to cure the sealing material, thereby forming a liquid crystal cell. Thereafter, the heating step is increased as appropriate to promote hardening of the sealing material. In order to improve the adhesion enhancement or electrical property reliability of the sealing material, the heating step is often increased in many cases.

[Examples]

Hereinafter, the present invention will be described in more detail by way of examples, but the invention is not limited to the examples. Moreover, "%" in the composition of the following examples and comparative examples means "% by mass".

In the examples, the measured characteristics are as follows.

Phase transition temperature (Tni): nematic phase-isotropic liquid phase transfer temperature (°C)

Birefringence (Δn): refractive index anisotropy of 295K

Dielectric anisotropy (Δε): dielectric anisotropy of 295K

Viscosity (η): viscosity of 295K (mPa‧s)

Γ1 (rotational viscosity): rotational viscosity of 295K (mPa‧s)

Voltage holding ratio (VHR): Voltage holding ratio (%) of 313K at a frequency of 60 Hz and a voltage of 5 V

Afterimage evaluation:

The afterimage evaluation of the liquid crystal display element causes a specific fixed pattern to be displayed 1440 in the display area. After the hour, the level of the afterimage of the fixed pattern when the full screen was uniformly displayed was visually observed in the following four stages.

◎ no afterimage

○ have few afterimages and allowable levels

△There is an afterimage and cannot be tolerated

× has afterimage and is quite serious

Volatility evaluation (contamination evaluation of manufacturing equipment):

The evaluation of the volatility of the liquid crystal material was carried out by observing the operation state of the vacuum stirring defoaming mixer while irradiating with a stroboscopic apparatus to visually observe the foaming of the liquid crystal material. Specifically, 0.8 kg of a liquid crystal composition was added to a dedicated container of a vacuum stirring defoaming mixer having a capacity of 2.0 L, and a vacuum stirring defoaming was performed at a revolution speed of 15 S ^-1 and a rotation speed of 7.5 S ^-1 at a degassing rate of 4 kPa. The mixer was evaluated in the following four stages according to the time before the start of foaming.

◎ 3 minutes or more before foaming. The possibility of contamination of the device due to volatilization is low.

○ 1 minute or more before foaming and less than 3 minutes. There is a slight contamination of the device due to volatilization.

△ 30 seconds before foaming and less than 1 minute. Contamination of the device due to volatilization.

× Within 30 seconds before foaming. There is a risk of major equipment contamination due to volatilization.

Process suitability evaluation:

Process suitability is based on the ODF process using a fixed metering pump to add 40pL of liquid crystal each time and 100000 times, for the following "0~200 times, 201~400 times, 401~600 times, ‧‧‧.99801~100000 times The change in the amount of liquid crystal added per 200 drops was evaluated in the following four stages.

◎ Very small change (can stably manufacture liquid crystal display elements)

○ slightly changeable and tolerable level

△ There is a change and it is not acceptable (the yield is deteriorated due to unevenness)

× varies and is quite serious (liquid crystal leakage or vacuum bubbles are generated)

Solubility evaluation at low temperature:

Evaluation of Solubility at Low Temperature After preparing a liquid crystal composition, 0.5 g of a liquid crystal composition was weighed in a 1 mL sample bottle, and in a temperature-controlled test tank, the following stage was used as a cycle of "-20 ° C (for 1 hour) → temperature rise) (0.2 ° C / min) → 0 ° C (for 1 hour) → temperature (0.2 ° C / min) → 20 ° C (for 1 hour) → cooling (-0.2 ° C / min) → 0 ° C (for 1 hour) → cooling ( -0.2 ° C / min) → -20 ° C. The temperature change was continuously applied to visually observe the generation of precipitates from the liquid crystal composition, and the following four stages were evaluated.

◎ No precipitate was observed for 600 hours or more.

○ No precipitate was observed for 300 hours or more.

△ The precipitate was observed within 150 hours.

× Precipitate was observed within 75 hours.

In the examples, the following abbreviations are used for the description of the compounds.

(ring structure)

(side chain structure and joint structure)

(Example 1)

A liquid crystal composition LC-1 containing both the compound represented by the formula (26.2) and the compound represented by the formula (2.3) was prepared.

(Comparative Example 1 and Comparative Example 2)

A liquid crystal composition LC-2 containing a compound having a structure similar to the compound and having a small molecular weight in place of the compound represented by the formula (2.3), and a compound represented by the formula (2.3), and having a compound having the compound Liquid crystal composition LC-3 of a compound having the same molecular weight and different positions of the alkenyl structure.

The initial VHR of the liquid crystal composition LC-1 was 99.2%. On the other hand, the VHR after standing at a high temperature of 150 ° C for 1 hour was 98.5%. The solubility at low temperature was evaluated, and the results showed excellent performance as shown in the table. Further, a liquid crystal display device was produced by using the liquid crystal composition LC-3 according to the ODF process, and the afterimage and process suitability were examined by the above method. As a result, excellent results were obtained as shown in the table. Further, the volatility was investigated by the above method, and as a result, it was revealed that the volatility was low and the possibility of contamination of the manufacturing apparatus was low.

The initial VHR of the liquid crystal composition LC-2 was 99.0%. On the other hand, the VHR after leaving at a high temperature of 150 ° C for 1 hour was 98.0%. Tni, birefringence, dielectric anisotropy, The viscosity and the rotational viscosity are values substantially equal to those of LC-1, and are known to be useful for liquid crystal display elements. The solubility at low temperature was evaluated, and the results were slightly inferior to those of LC-1 as shown in the table. Using the liquid crystal composition LC-2 and preparing a liquid crystal display element according to the ODF process, the afterimage and process suitability were studied by the above method, and as shown in the table, the process suitability was slightly worse than that of the LC-1. It is worse than LC-1. Further, the volatility was investigated by the above method, and as a result, it was revealed that the volatility was high and the possibility of contamination of the manufacturing apparatus was high.

The initial VHR of the liquid crystal composition LC-3 was 99.1%. On the other hand, the VHR after standing at a high temperature of 150 ° C for 1 hour was 98.3%. Tni, birefringence, dielectric anisotropy, and viscosity are substantially equal to those of LC-1, and the rotational viscosity is greatly deteriorated compared with LC-1, so that the performance for liquid crystal display elements is known to be large. Getting worse. The solubility at low temperature was evaluated, and the results were far worse than LC-1 as shown in the table. Further, a liquid crystal display device was produced by using the liquid crystal composition LC-3 and an ODF process, and the afterimage and process suitability were investigated by the above method. As a result, the process suitability was poor as compared with LC-1. The afterimage is slightly worse than LC-1. Further, the volatility was investigated by the above method, and it was found that although the volatility was slightly higher than that of the LC-1, the contamination of the manufacturing apparatus was slight.

(Example 2)

A liquid crystal composition LC-4 containing both the compound represented by the formula (26.3) and the compound represented by the formula (2.3) was prepared.

(Comparative Example 3 and Comparative Example 4)

A liquid crystal composition LC-5 containing a compound represented by the formula (26.3) and containing a compound having a structure similar to the compound and having a relatively large molecular weight, and a compound represented by the formula (26.3), and having a compound similar to the compound Liquid crystal composition LC-6 of a compound having a small molecular weight structure.

The initial VHR of the liquid crystal composition LC-4 was 99.4%. On the other hand, the VHR after standing at a high temperature of 150 ° C for 1 hour was 98.5%. The solubility at low temperature was evaluated, and the results showed excellent performance as shown in the table. Further, a liquid crystal display device was produced by using the liquid crystal composition LC-4 according to the ODF process, and the afterimage and process suitability were examined by the above method, and the results were excellent as shown in the table. Further, the volatility was investigated by the above method, and as a result, it was revealed that the volatility was low and the possibility of contamination of the manufacturing apparatus was low.

The initial VHR of the liquid crystal composition LC-5 was 98.9%. On the other hand, the VHR after standing at a high temperature of 150 ° C for 1 hour was 97.9%. The Tni, birefringence, and viscosity are approximately equal to those of LC-4, but the dielectric anisotropy is small compared to LC-4, and the rotational viscosity becomes large. According to these results, it is known that when LC-5 is used for a liquid crystal display element, the driving voltage is increased and the response speed is slowed, so that the liquid crystal display element is inferior in performance. The solubility at low temperature was evaluated, and the results were shown to be significantly worse than those of LC-4 as shown in the table. Using the liquid crystal composition LC-5 and preparing a liquid crystal display element according to the ODF process, the afterimage and process suitability were investigated by the above method, and the results showed that the process suitability and afterimage were slightly compared with LC-4 as shown in the table. Getting worse. Further, by studying the volatility by the above method, it was found that the volatility was the same as that of LC-4, and the possibility of contamination by the manufacturing apparatus was low.

The initial VHR of the liquid crystal composition LC-6 was 99.4%. On the other hand, the VHR after leaving at a high temperature of 150 ° C for 1 hour was 98.1%. The birefringence and viscosity are approximately equal to those of LC-4, Tni and dielectric anisotropy are lower than that of LC-4, and the rotational viscosity is also deteriorated compared with LC-4, so it is known for liquid crystal. The performance when displaying components deteriorates. The solubility at low temperature was evaluated, and the results were shown to be the same as those of LC-4 as shown in the table. Further, a liquid crystal display device was produced by using the liquid crystal composition LC-6, and the afterimage and process suitability were examined by the above method. As a result, the process suitability and afterimage and the LC-1 phase were shown as shown in the table. It is slightly worse than it is. Further, the volatility was examined by the above method, and as a result, it was found that the volatility was higher than that of the LC-4, and there was a possibility that the manufacturing apparatus was contaminated.

(Examples 3 to 6)

The liquid crystal compositions LC-7 to LC-10 shown below were prepared and their physical property values were measured. The results are shown in the table below.

(Examples 7 to 10)

The liquid crystal compositions LC-11 to LC-14 shown below were prepared and their physical property values were measured. The results are shown in the table below.

(Examples 11 to 14)

The liquid crystal compositions LC-15 to LC-18 shown below were prepared and their physical property values were measured. The results are shown in the table below.

(Examples 15 to 18)

The liquid crystal compositions LC-19 to LC-22 shown below were prepared and their physical property values were measured. The results are shown in the table below.

(Example 19 to Example 22)

The liquid crystal compositions LC-23 to LC-26 shown below were prepared and their physical property values were measured. The results are shown in the table below.

(Example 23 to Example 26)

The liquid crystal compositions LC-27 to LC-30 shown below were prepared and their physical property values were measured. The results are shown in the table below.

(Example 27)

Formula (V-2) was added to 99.7% of the nematic liquid crystal composition LC-7 shown in Example 3.

The polymerizable compound shown was 0.3% and uniformly dissolved, whereby a polymerizable liquid crystal composition CLC-7 was prepared. The physical properties of CLC-7 were almost the same as those of the nematic liquid crystal composition shown in Example 3. CLC-7 was injected into the ITO-attached unit coated with a parallel-aligned polyimine immissive film having a cell gap of 3.5 μm by a vacuum injection method. A rectangular wave having a frequency of 1 kHz was applied to the unit, and the liquid crystal cell was irradiated with ultraviolet light by a high-pressure mercury lamp through a filter that cuts off ultraviolet rays of 320 nm or less. The irradiation was carried out for 600 seconds so that the irradiation intensity of the unit surface was 10 mW/cm ² , and a horizontal alignment liquid crystal display element obtained by polymerizing the polymerizable compound in the polymerizable liquid crystal composition was obtained. It was confirmed that the alignment regulating force for the liquid crystal compound was generated by polymerizing the polymerizable compound.

(Embodiment 28) Manufacturing of liquid crystal display element for active matrix drive

(production of front panel)

(formation of the black matrix)

The composition for forming a black matrix of the following composition was applied to a borosilicate glass substrate (OA-10 manufactured by Nippon Electric Glass Co., Ltd.) for a liquid crystal display device in a wet state at a thickness of 10 μm using a die coater. After drying, it was prebaked for 2 minutes at a temperature of 90 ° C to form a black matrix layer having a thickness of 2 μm.

(Black matrix forming coating composition)

※The number of copies is the quality standard.

Thereafter, the glass substrate with the black matrix layer obtained as described above is introduced into the exposure apparatus including the apparatus for transporting the substrate from the upstream side to the downstream side, and is transported to the exposure unit.

The temperature of the exposure apparatus itself was adjusted so as to be 23 ° C ± 0.1 ° C, and the relative humidity was adjusted so as to be 60% ± 1%.

After the glass substrate with the black matrix layer was adsorbed and fixed on the exposure stage, the glass substrate was automatically adjusted so that the interval (gap) between the surface of the coating film and the mask pattern was 100 μm. Further, the distance between the exposure position of the glass substrate and the end surface of the glass substrate is automatically detected, and the exposure is automatically adjusted so that the position from the glass substrate to the mask pattern is a fixed distance. Using a high-pressure mercury lamp as a light source, the exposure area was set to 200 mm × 200 mm, and I-ray (wavelength: 365 nm) was used for 20 seconds at an illuminance of 15 mW/cm ² to obtain an exposure amount of 300 mJ/cm ² .

The development processing is performed by providing a developing device on the downstream side of the exposure machine. The glass substrate after the exposure treatment was conveyed at a fixed speed of 400 mm/min to obtain a black matrix layer-attached substrate (1) in which a black matrix having a specific pattern was laminated.

For the alignment mark formed by the same material as the black matrix, the measurement was carried out by using a size measuring machine (NEXIV VMR-6555 manufactured by Nikon) at a temperature of 23 ° C ± 0.1 ° C and a relative humidity of 60% ± 1%. The change in the direction of the direction and the direction perpendicular to the transport direction results in a transport direction of 100.000 mm and a vertical direction of 100.000 mm with respect to the size of the reticle, and the size of the pattern actually formed on the glass substrate is 99.998 mm. Vertical direction: 100.001mm.

Thereafter, the black matrix was thermally cured by baking in a baking oven at 220 ° C for 30 minutes. The obtained black matrix was measured under the same conditions as above (temperature: 23 ° C ± 0.1 ° C, relative humidity: 60% ± 1%), and the size of the pattern formed on the substrate (1) was the transport direction: 99.998 mm, vertical. Direction: 100.001mm.

(formation of red, green and blue colored layers)

On the substrate (1) having the black matrix layer, the composition for forming a colored pattern having the following composition was applied to the substrate (1) having a thickness of 10 μm in a wet state, and dried at a temperature of 90 ° C. Under the conditions, prebaking was performed for 2 minutes to obtain a substrate (1) having a thickness of 2 μm and a black matrix layer ‧ coloring pattern forming composition.

In the following, the composition of the red coloring pattern forming composition is changed. When the red pigment is changed to any of the green pigments, the green coloring pattern forming composition is obtained. In the case of the blue pigment, a composition for forming a blue colored pattern is obtained. Various coloring pigments of red, green, and blue have a case where a resin composition for enhancing color development or brightness is contained. In the resin composition of the above-mentioned purpose, a block copolymer of methacrylic acid having a primary, secondary or tertiary amino group is often used. Specific examples thereof include "BYK 6919" by BYK Corporation.

(Red coloring pattern forming composition)

※The number of copies is the quality standard.

(in the case of a green coloring pattern)

In the red coloring pattern forming composition, a red pigment (for example, C.I. Pigment Green 58) is used instead of the red pigment, and the same is used in the same manner as the red coloring pattern forming composition.

(in the case of a blue coloring pattern)

In the red coloring pattern forming composition, a blue pigment (for example, C. Pigment Blue 15.6) is used, and the red coloring matter is formed in the same manner as the red coloring pattern forming composition.

In the exposure apparatus including the transport apparatus that transports the upstream side to the downstream side, the substrate (1) having the black matrix layer/color pattern forming composition obtained as described above is introduced and transported to the exposure unit.

The temperature of the exposure device itself is adjusted to be 23 ° C ± 0.1 ° C In addition, the relative humidity is adjusted so as to be 60% ± 1%.

After the substrate (1) having the composition of the black matrix layer and the coloring pattern forming composition is adsorbed and fixed on the exposure stage, the surface of the coating film and the light of the substrate (1) with the black matrix layer and the coloring pattern forming composition are attached. The gap between the mask patterns (gap) was automatically adjusted so as to be 100 μm. Further, the black matrix layer ‧ the exposure position of the substrate (1) for automatically detecting the coloring pattern forming composition is the distance from the end surface of the substrate (1) to which the black matrix layer ‧ the coloring pattern forming composition is attached, and the mask The pattern position is automatically adjusted after the substrate (1) having the black matrix layer and the coloring pattern forming composition is fixed at a fixed distance, and the alignment mark formed at the same time when the black matrix is formed is used for the red mask. After the alignment, the exposure is performed. Using a high-pressure mercury lamp as a light source, the exposure area was set to 200 mm × 200 mm, and exposure was performed for 20 seconds using an I-ray (wavelength: 365 nm) at an illuminance of 15 mW/cm ² to obtain an exposure amount of 100 mJ/cm ² . The development is performed by providing a developing device on the downstream side of the exposure machine. The substrate (1) having the black matrix layer and the coloring pattern forming composition after the exposure treatment was conveyed at a fixed speed of 400 mm/min, and a red colored layer was laminated at a specific position of the opening of the black matrix on the glass substrate. Substrate (1). Thereafter, the red colored layer was thermally cured by baking in a baking oven at 220 ° C for 30 minutes. A green and blue colored layer was repeatedly formed by the same method as the above-described red, and a color filter in which a black matrix and a red, green, and blue colored layer were formed on the substrate (1) was obtained. Further, after the blue colored layer was post-baking treatment, the black matrix was measured under the same conditions as above (temperature: 23 ° C ± 0.1 ° C, relative humidity: 60% ± 1%), and the pattern formed on the glass substrate was obtained. The size is the transport direction: 99.999mm, vertical direction: 100.002mm. The dimensional change of the black matrix is 10 ppm in the manufacturing step from the development of the first layer (black matrix layer) to the fourth layer (blue layer) after baking, whereby the glass substrate can be used as 4 The inch size forms a color filter with a resolution of 200 ppi (BM line width 7 μm, pitch 42 μm) without pixel shift.

(Formation of ITO electrode layer)

Then, the color filter is introduced into the sputtering apparatus, and DC (Direct Current, DC) sputtering is carried out by reactive sputtering using oxygen in a reaction gas, and ITO (indium tin oxide) is used as a target to form an ITO film having a film thickness of 150 nm on a black matrix and a red, green and blue colored layer. ITO electrode layer. The sheet resistance of the ITO electrode fabricated in this manner was 45 Ω/□.

(formation of column spacers)

(preparation of dry film)

As a dry film for forming a columnar spacer, it was coated on a PET (Polyethylene terephthalate) base film having a thickness of 25 μm in a wet state by a die coater so as to have a thickness of 20 μm. The composition for forming a columnar spacer composed of a negative photosensitive resin was dried and then prebaked at a temperature of 90 ° C for 2 minutes to have a thickness of 4.5 μm. Thereafter, a PET protective film having a thickness of 25 μm was laminated thereon to prepare a dry film for forming a columnar spacer. (Production of laminated substrate)

On the substrate (1) on which the black matrix, the red-green-blue colored layer, and the ITO electrode layer obtained in the above-mentioned manner are formed, the protective layer is preliminarily peeled off so that the composition for forming the columnar spacer is opposed to the ITO electrode layer. The pattern spacer forming dry film was continuously transferred to the column spacer forming composition layer under the conditions of roll pressing: 5 kg/cm ² , roll surface temperature: 120 ° C, and speed: 800 mm/min. At this time, the base film was not peeled off, and the film was adhered to the column spacer forming composition to enter the following exposure step. (exposure processing step)

In the exposure apparatus including the transport apparatus that transports the upstream side to the downstream side, the laminated substrate obtained as described above is introduced and transported to the exposure unit.

The temperature of the exposure apparatus itself was adjusted so as to be 23 ° C ± 0.1 ° C, and the relative humidity was adjusted so as to be 60% ± 1%.

After the laminated substrate was adsorbed and fixed on the exposure stage, the interval between the base film of the laminated substrate and the mask pattern (gap) was automatically adjusted so as to be 30 μm. The mask pattern used at this time is designed in such a manner as to be a spacer pattern formed on the black matrix.

Further, the distance between the exposure position of the pattern of the laminated substrate and the end surface of the laminated substrate is automatically detected, and the position of the mask pattern is automatically adjusted so that the position of the mask pattern becomes a fixed distance, and then the black matrix is formed at the same time. The alignment mark is aligned with the photo spacer of the column spacer, and exposure is performed. Using a high-pressure mercury lamp as a light source, the exposure area was set to 200 mm × 200 mm, and exposure was performed for 20 seconds using an I-ray (wavelength: 365 nm) at an illuminance of 15 mW/cm ² to obtain an exposure amount of 300 mJ/cm ² .

(development processing, post-baking processing steps)

In the development processing, a developing device is disposed on the downstream side of the exposure machine, and the base film is peeled off from the laminated substrate after the exposure in the developing device, and is carried out while being conveyed at a fixed speed of 400 mm/min. In this manner, a color filter in which a pattern spacer is formed at a specific position of a lattice pattern portion of a black matrix in which the black matrix, the red green blue colored layer, and the ITO electrode layer are formed is obtained. Thereafter, the columnar spacer was thermally cured by baking at 220 ° C for 30 minutes in a baking oven. In this manner, a front plate in which a black matrix, a red-green-blue colored layer, an ITO electrode layer, and a columnar spacer were formed on the substrate (1) using the above-described spacer pattern was obtained.

(production of backboard)

(Formation of TFT electrode layer)

A TFT electrode layer was formed on a transparent substrate by using a glass plate for a liquid crystal display device (OA-10 manufactured by Nippon Electric Glass Co., Ltd.) as a transparent substrate and according to the method described in JP-A-2004-140381.

That is, after forming amorphous silicon on a glass substrate layer to a thickness of 100nm to form a silicon oxide layer (SiO _x) using a vacuum deposition method. Thereafter, a TFT layer and a pixel electrode were formed on the ruthenium oxide layer by photolithography and etching to obtain a glass substrate with a TFT array as a back sheet.

<Manufacture of liquid crystal display element>

(alignment film formation)

The front plate and the back plate were formed in the above manner to form a liquid crystal alignment film. After washing both substrates with pure water, a liquid crystal alignment agent containing polyimine was applied using a liquid crystal alignment film coating printer (soft printing machine), and dried in an oven at 180 ° C for 20 minutes. A coating film having a dry average film thickness of 600 Å is formed on the surface of the front plate on which the ITO is formed and the surface of the back electrode on which the TFT electrode layer is formed. The coating film was subjected to a rubbing treatment at a rotational speed of 400 rpm, a moving speed of the platform of 30 mm/sec, a hair pressing length of 0.4 mm, and a water-washing by a rubbing device having a roll wound with a crepe cloth at 120 ° C. Dry on the oven for 10 minutes. The coating portion of the sealing material of the front plate is coated by a dispenser to draw a closed loop of the sealing material.

A photothermal heat curing resin composition containing a bisphenol A type methacrylic acid modified epoxy resin is used as a sealing material, and the sealing material is mixed with the resin component in a columnar spacer formed as described above. The spherical spacer of the same size was 0.5% by mass. It was prepared in such a manner that the coating amount of the sealing material became the sealing width (0.7 mm) of the liquid crystal display element. Then, the liquid crystal composition (LC-15) shown in Example 11 was dropped on a single front plate at a specific position in the closed loop of the sealing material using a fixed metering type dispenser at 90 times per 24.7 pL. (Total 2230pL)

After the liquid crystal is dropped, the front plate and the back plate are adsorbed on the electrostatic chuck. The front plate and the back plate are disposed opposite to each other such that the back plate is slowly lowered to be stationary at a distance of 300 μm from the front plate. In this state, the inside of the vacuum chamber was depressurized to 100 Pa. The pre-formed alignment marks are used to adjust the bonding position of the front panel and the back panel. After the alignment is completed, the front plate and the back plate are further brought closer, and the two substrates are held at a height at which the sealing material contacts the TFT electrode layer. In this state, an inert gas is introduced into the vacuum chamber to return the inside of the system to atmospheric pressure. The front plate and the back plate are pressed by atmospheric pressure, and the cell gap is formed by the height of the columnar spacer. Then, the sealing material application portion is irradiated with ultraviolet rays (365 nm, 30 kJ/m ² ) to harden the sealing material, and the substrates are fixed to each other. In this state, the substrate to which the liquid crystal composition was added was transferred to a heating apparatus, and the surface temperature was maintained at 120 ° C for 1 hour. After the completion of the heating, air cooling was performed to obtain an active matrix driving liquid crystal display element.

100‧‧‧Substrate a

102‧‧‧TFT layer

103‧‧‧pixel electrode

104‧‧‧passivation film

105‧‧‧Alignment film a

200‧‧‧substrate b

201‧‧‧Flat film (top coat)

202‧‧‧Black matrix

203‧‧‧Color filters

204‧‧‧Transparent electrode

205‧‧‧Alignment film b

301‧‧‧ sealing material

302‧‧‧ Column spacers

303‧‧‧Liquid layer

304‧‧‧ Protrusion

Claims (14)

A liquid crystal composition having positive dielectric anisotropy and comprising: component (A), which contains formula (26.2) The dielectric property of the compound represented is a positive component; and the component (B) contains a formula (2.3) The dielectric anisotropy of the represented compound is greater than -2 and the dielectric of less than +2 is a neutral component. The liquid crystal composition of claim 1, wherein the component (A) having a positive dielectric property is selected from the group consisting of the formula (X) (wherein X ¹⁰ to X ¹⁰⁴ each independently represent a fluorine atom or a hydrogen atom, Y ¹⁰ represents a fluorine atom, a chlorine atom, -OCF ₃ , Q ¹⁰ represents a single bond or -CF ₂ O-, and R ¹⁰ represents a carbon atom A alkyl group of 1 to 5, and A ¹⁰¹ and A ¹⁰² each independently represent a 1,4-cyclohexylene group, a 1,4-phenylene group, or One or two or more compounds of the compound groups shown. A liquid crystal composition according to claim 1 or 2, wherein the dielectrically neutral component (B) contains the general formula (V) (wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, and A ⁵¹ and A ⁵² each independently represent a 1,4-cyclohexylene group or a 1,4-phenylene group, Q ⁵ One or two or more compounds represented by a single bond or -COO-, and X ⁵¹ and X ⁵² each independently represent a fluorine atom or a hydrogen atom. The liquid crystal composition according to any one of claims 1 to 3, wherein the positive dielectric component (A) contains the general formula (XIV) (wherein R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms, X ¹⁴¹ to X ¹⁴⁴ each independently represents a fluorine atom or a hydrogen atom, Y ¹⁴ represents a fluorine atom, a chlorine atom or -OCF ₃ , and Q ¹⁴ represents a single bond. And -COO- or -CF ₂ O-, m ¹⁴ is 0 or 1) of the compound represented by 1 type or 2 or more types. The liquid crystal composition according to any one of claims 1 to 4, wherein the component having a dielectric neutrality (B) contains the formula (I) [Chemical 3] R ¹¹ -A ¹¹ -A ¹² -R ¹² (I) (wherein R ¹¹ and R ¹² each independently represent an alkyl group or alkoxy group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and A ¹¹ and A ¹² are each independently represented. One or more compounds represented by 1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene or 3-fluoro-1,4-phenylene . The liquid crystal composition according to any one of claims 1 to 5, wherein the dielectrically neutral component (B) contains the general formula (IV) (wherein R ⁴¹ and R ⁴² each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 4 to 5 carbon atoms, and X ⁴¹ and X ⁴² each independently represent a hydrogen atom or a fluorine atom) One or two or more compounds. The liquid crystal composition according to any one of claims 2 to 6, wherein the compound represented by the formula (X) is selected from the group consisting of the formula (37.2), the formula (44.1), the formula (44.2), and the formula (39.2). , formula (40.2) or formula (41.2) [Chemical 4] A compound in the group of compounds indicated. The liquid crystal composition according to any one of claims 3 to 7, wherein the compound represented by the formula (V) is selected from the group consisting of the formula (20.2), the formula (21.1), the formula (23.1), and the formula (23.2). And (25.1) A compound in the group of compounds indicated. The liquid crystal composition according to any one of claims 4 to 8, wherein the compound represented by the formula (XIV) is selected from the formula (51.1) or the formula (56.4). A compound in the group of compounds indicated. The liquid crystal composition according to any one of claims 5 to 9, wherein the compound represented by the formula (I) is selected from the formula (6.6) or the formula (5.3). A compound in the group of compounds indicated. The liquid crystal composition according to any one of claims 6 to 10, wherein the compound represented by the formula (IV) is selected from the formula (19.1) or the formula (19.2). [化8] A compound in the group of compounds indicated. A liquid crystal display element for active matrix driving, which uses the liquid crystal composition according to any one of claims 1 to 11. The liquid crystal display element for active matrix driving according to claim 12, wherein the driving mode is IPS mode or FFS mode. A liquid crystal display using the liquid crystal display element for active matrix driving of claim 12 or 13.