WO1989006265A1 - Ferroelectric liquid crystal composition - Google Patents
Ferroelectric liquid crystal composition Download PDFInfo
- Publication number
- WO1989006265A1 WO1989006265A1 PCT/JP1988/001295 JP8801295W WO8906265A1 WO 1989006265 A1 WO1989006265 A1 WO 1989006265A1 JP 8801295 W JP8801295 W JP 8801295W WO 8906265 A1 WO8906265 A1 WO 8906265A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- formula
- compound represented
- carbon atoms
- liquid crystal
- alkyl group
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
- C09K19/44—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing compounds with benzene rings directly linked
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
- C09K19/46—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
- C09K19/54—Additives having no specific mesophase characterised by their chemical composition
Definitions
- the present invention relates to a ferroelectric liquid crystal material. More specifically, a ferroelectric liquid crystal composition having a high-speed response composed of a smectic liquid crystal compound and an optically active compound, and an optical spot using the same. Related to the element.
- Liquid crystal compounds are widely used as materials for display devices, but most of such liquid crystal display devices are of the TN type display system. In some cases, those belonging to the nematic phase are used.
- the TN-type display system is a light-receiving type, so it does not tire your eyes and consumes very little power.On the other hand, it responds slowly and the display is visible depending on the viewing angle.
- other light-emitting displays for example, electrification
- Nes display, plasma display, etc. the TN display method is not very good in terms of response time and wide viewing angle. Difference It is.
- the TN type must be used to make the most of the characteristics of liquid crystal display elements such as light-receiving type and low power consumption, and to ensure a response comparable to that of the light-emitting type display. It is essential to develop a new liquid crystal display method that replaces the display method.
- the molecules form a layer, the molecules are inclined relative to the layer plane, and the helical axis is relative to the layer plane. And vertical. Since spontaneous polarization occurs in the chiral phase, when a DC electric field is applied in parallel to this layer, the molecules rotate the helical axis according to the polarity. Invert as axis. Display elements using ferroelectric liquid crystals use this switching phenomenon. Is
- ferroelectric liquid crystal composition that satisfies the conditions described above must be obtained by mixing several kinds of liquid crystalline compounds or non-liquid crystal compounds. I don't have to.
- ferroelectric liquid crystal compositions consisting of ferroelectric liquid crystal compounds but also non-chiral liquids are disclosed in Japanese Patent Application Laid-Open No. 61-195,187.
- non-chi la le of Ri of either basic substance et illustrating least for the also One of phases such as S, and the scan main Cu Chi that Yusuke one also rather low phase such as S e
- the liquid crystal mixture is hereinafter referred to as a base Sm mixture.
- the components of the base Sm mixture include phenylbenzol-based, Schiff base-based, phenyl pyridine-based, and 5-azolexyl -2-( 4-Flexible recording Some of the liquid crystal compounds such as pyridin are used.
- Ferroelectric liquid crystal materials consisting of 10- (4-alkoxyphenyl) pyrimidine and an optically active compound are also capable of forming S ( ⁇ phase over a wide temperature range including room temperature. It is also shown to be effective in improving responsiveness, and further improvement in responsiveness at room temperature is eagerly desired.
- a first object of the present invention is to provide a ferroelectric liquid crystal composition having a high-speed response, and a second object is to provide a response using the liquid crystal composition.
- the purpose of the present invention is to provide a fast switching element.
- R 1 and R 2 each represent an alkyl group having 1 to 18 carbon atoms.
- R 3 represents an alkyl group having 1 to 18 carbon atoms or an ethoxy group
- R 4 represents an alkyl group having 2 to 18 carbon atoms
- X represents a single bond.
- the optically active compound represented by the formula (I) is 20 to 98% by weight, It is preferable that the compound represented by the formula ( ⁇ ) is in a ratio of 1 to 40% by weight.
- R 5 represents an alkyl group or a phenol group having 1 ⁇ 18 carbon atoms
- Y represents a single bond, one CH 20 —, or
- p is an integer of '0 or 1;
- Z is an alkyl group having 1 to 18 carbon atoms or
- the compound represented by (I) has a compound power of 20 to 98% by weight, the compound represented by formula ( ⁇ ) has 1 to 40% by weight, and the compound represented by formula ( ⁇ ) has 1 to 4% by weight.
- a blending ratio of 0% by weight is preferred.
- optical switching element according to the second invention of the present invention is characterized in that at least one kind of the non-chiral compound represented by the formula (I) is combined with the compound represented by the formula (II)
- optically active compound represented by the formula (III) of the present invention the following compounds can be used. OCH
- R 3 represents an alkyl group having 1 to 18 carbon atoms or an anoreoxy group
- R 4 represents an alkyl group having 2 to 18 carbon atoms.
- optically active compound represented by the formula (DI) according to the present invention can be used as an optically active compound.
- R 5 represents an alkyl group or phenol group having 1 to 18 carbon atoms
- R 6 represents an alkyl group having 1 to 18 carbon atoms.
- optically active compound represented by the formula (m) include
- a compound having a smectic C phase is particularly preferably used. Even for a compound that does not show the chip C phase, it can be used to limit the temperature range of the se phase to a range that does not significantly reduce the temperature range.
- the main compounds are shown in Table 1 below.
- S A is a smectic A phase
- N is a nematic phase
- I s Indicates an isotropic liquid phase, and one indicates the presence and absence of each phase.
- the compound represented by the formula (I) in the liquid crystal composition of the present invention can be produced by the following production method A.
- R is an alkyl group such as methylene or ethylenol
- X is chlorine, bromine, iodine, p-toluenesulfonyloxy group, benzene Leaving groups such as sulfonyloxy group and methansulfonyl group
- p-alkylbenzamidin hydrochloride (1) In the presence of sodium alcohol, the compound is reacted with p-alkylbenzamidin hydrochloride (1) to produce a compound (7), which is then converted to an alcohol. By processing, (5) can be manufactured. The following can be produced in the same manner as in Production Method A.
- the starting material, p-alkylbenzamidin hydrochloride can be prepared by publicly known methods from the readily available P-alkylbenzonitrile power. I can do it.
- the ferroelectric liquid crystal composition of the present invention has an extremely excellent high-speed response, and by using the composition, a switching element having a high response can be obtained. It is now possible to provide. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 shows a phase diagram when the composition A of Example 1 described later and the compound represented by the formula (a) are mixed.
- Example 1
- Composition A having the composition shown in the following was prepared from the compound represented by the formula (I), and the physical properties thereof were measured.
- the phase transition temperature of the composition A is C ⁇ S c
- composition A and a compound represented by the formula ( ⁇ ) Fig. 1 shows the phase diagram of the mixture of the two.
- composition 80 80 ⁇
- phase transition temperature was obtained by observation of DSC and a texture using a polarizing microscope.
- the response time is the change in transmitted light intensity caused by the application of a rectangular wave of ⁇ 10 VZm, ⁇ ⁇ ⁇ , with the liquid crystal element placed between two orthogonal polarizers.
- the value of the spontaneous polarization was determined by the software method. In the examples and examples described below, values under similar measurement conditions are shown.
- composition B The compound represented by the formula (m) shown below was mixed with the composition A to prepare a composition B, and the physical properties thereof were measured.
- Composition A 60% by weight
- phase transition temperature of the composition B is
- the response time power of most of the ferroelectric liquid crystal compositions known up to now is 100 asec or more
- the response of the ferroelectric liquid crystal composition of the present invention is The fact that time is so fast is clear.
- composition C having the composition shown below consisting of the compound represented by the formula (I) and the compound represented by the formula (II) was prepared, and its physical properties were measured.
- composition D composed of a compound represented by the formula (I) and a compound represented by the formula ( ⁇ ) was prepared, and its physical properties were measured.
- phase transition temperature of this composition D is 61 ° C 74 ° C
- composition E comprising the compound represented by the formula (I) and the compound represented by the formula (II) was prepared, and its physical properties were measured.
- Composition A 80% by weight
- composition F having the following composition composed of the compounds represented by the formulas (I), (II) and (IE) was prepared, and the physical properties thereof were measured.
- Example 7 A composition G having the following composition consisting of the compounds represented by the formulas (I), (II) and (H) was prepared, and the physical properties thereof were measured.
- the value of spontaneous polarization (P s) is 87.5 nC cm 2
- the tilt angle is 23.7 °
- the response time at 30 ° C is The value of the spontaneous polarization (P s) was 28. 4 nCcm- 2
- the tilt angle was 23.6 °.
- composition H having the following composition consisting of the compounds represented by the formulas (I), ( ⁇ ) and ( ⁇ ) was prepared, and its physical properties were measured.
- composition I having the following composition consisting of the compounds represented by the formulas (I), ( ⁇ ) and (m) was prepared, and the physical properties thereof were measured.
- phase transition temperature of the composition I is
- composition J having a composition consisting of the compounds represented by the formulas (I), ( ⁇ ) and (m) was prepared, and the physical properties thereof were measured.
- compositions of the present invention caused a the S e present phase in a wide temperature range including room temperature, or we may or teeth that have a fast response, the problems have been ⁇ in conventional or et liquid crystal display device This is to be solved, and by using this liquid crystal composition, a fast-switching element with high responsiveness can be obtained.
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Liquid Crystal Substances (AREA)
- Liquid Crystal (AREA)
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019890701603A KR930002767B1 (ko) | 1987-12-25 | 1988-12-23 | 강유전성 액정 조성물 |
BR888807389A BR8807389A (pt) | 1987-12-25 | 1988-12-23 | Composicao de cristal liquido ferroeletrico e elemento de comutacao de luz |
DE8989900878T DE3879511T2 (de) | 1987-12-25 | 1988-12-23 | Ferroelektrische fluessigkristallzusammensetzung. |
AT89900878T ATE87022T1 (de) | 1987-12-25 | 1988-12-23 | Ferroelektrische fluessigkristallzusammensetzung. |
DK411189A DK411189A (da) | 1987-12-25 | 1989-08-22 | Ferroelektrisk flydende-krystal-praeparat |
NO893413A NO176612C (no) | 1987-12-25 | 1989-08-24 | Ferroelektrisk, flytende krystallblanding samt lysskiftende element som inneholder blandingen |
FI893988A FI94144C (fi) | 1987-12-25 | 1989-08-24 | Ferroelektrinen nestekidekoostumus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62329058A JP2525214B2 (ja) | 1987-12-25 | 1987-12-25 | 強誘電性液晶組成物 |
JP62/329058 | 1987-12-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1989006265A1 true WO1989006265A1 (en) | 1989-07-13 |
Family
ID=18217138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1988/001295 WO1989006265A1 (en) | 1987-12-25 | 1988-12-23 | Ferroelectric liquid crystal composition |
Country Status (12)
Country | Link |
---|---|
US (1) | US5198150A (ja) |
EP (1) | EP0411122B1 (ja) |
JP (1) | JP2525214B2 (ja) |
KR (1) | KR930002767B1 (ja) |
AT (1) | ATE87022T1 (ja) |
AU (1) | AU603725B2 (ja) |
BR (1) | BR8807389A (ja) |
DE (1) | DE3879511T2 (ja) |
DK (1) | DK411189A (ja) |
FI (1) | FI94144C (ja) |
NO (1) | NO176612C (ja) |
WO (1) | WO1989006265A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0411610A2 (en) * | 1989-08-01 | 1991-02-06 | Chisso Corporation | Ferroelectric liquid crystal composition and light switching device using said composition |
EP0427195A2 (en) * | 1989-11-07 | 1991-05-15 | Chisso Corporation | A ferroelectric liquid crystal composition |
EP0458087A2 (en) * | 1990-05-23 | 1991-11-27 | Chisso Corporation | A ferroelectric liquid crystal composition |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2058404T3 (es) * | 1988-06-24 | 1994-11-01 | Canon Kk | Composicion de cristal liquido ferroelectrico quiral esmectico y dispositivo de cristal liquido que utiliza la misma. |
JP2519822B2 (ja) * | 1990-06-29 | 1996-07-31 | 出光興産株式会社 | 強誘電性高分子液晶組成物 |
DE4023867A1 (de) * | 1990-07-27 | 1992-01-30 | Merck Patent Gmbh | Ferroelektrische fluessigkristallanzeige |
JP2937274B2 (ja) * | 1991-07-29 | 1999-08-23 | チッソ株式会社 | 反強誘電性液晶組成物 |
JPH05271658A (ja) * | 1992-03-27 | 1993-10-19 | Chisso Corp | 反強誘電性液晶組成物 |
US7310842B2 (en) * | 2005-03-11 | 2007-12-25 | Magline, Inc. | Portable ramp assembly and method of construction |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61219679A (ja) * | 1985-03-26 | 1986-09-30 | Konishiroku Photo Ind Co Ltd | インクリボンカセツト |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0662476B2 (ja) * | 1984-09-04 | 1994-08-17 | チッソ株式会社 | メチレンオキシ基を有する液晶性化合物及びその組成物 |
EP0178647B1 (en) * | 1984-10-18 | 1993-09-29 | Chisso Corporation | Ferroelectric chiral smectic liquid crystal composition |
JPH07113112B2 (ja) * | 1985-06-18 | 1995-12-06 | チッソ株式会社 | 強誘電性カイラルスメクチツク液晶組成物 |
GB8520715D0 (en) * | 1985-08-19 | 1985-09-25 | Secr Defence | Secondary alcohol derivatives |
JPS6289645A (ja) * | 1985-09-18 | 1987-04-24 | Chisso Corp | 強誘電性液晶エステル化合物及び液晶組成物 |
FR2587900B1 (fr) * | 1985-10-01 | 1988-10-07 | Morelle Jean | Associations acides gras-acides amines basiques, douees de proprietes emollientes, emulsifiantes et antioxydantes, destinees a la cosmetique, la dermatologie et l'alimentation |
EP0263843B1 (en) * | 1986-02-21 | 1992-12-02 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern | Liquid crystal compounds, mixtures and devices |
JPH0733353B2 (ja) * | 1986-07-04 | 1995-04-12 | チッソ株式会社 | ハロゲン置換フエニルベンジルエ−テル誘導体 |
JPS6337187A (ja) * | 1986-08-01 | 1988-02-17 | Matsushita Electric Ind Co Ltd | 液晶表示装置 |
JPS63137983A (ja) * | 1986-11-28 | 1988-06-09 | Chisso Corp | ゲストホスト型表示素子用強誘電性液晶混合物 |
JPH0819410B2 (ja) * | 1987-06-01 | 1996-02-28 | チッソ株式会社 | スメクチック液晶混合物 |
JPS6463301A (en) * | 1987-09-02 | 1989-03-09 | Tomoo Taguchi | Attaching device for tillage tine |
JP2691405B2 (ja) * | 1987-11-06 | 1997-12-17 | チッソ株式会社 | 強誘電性液晶組成物 |
-
1987
- 1987-12-25 JP JP62329058A patent/JP2525214B2/ja not_active Expired - Fee Related
-
1988
- 1988-12-23 EP EP89900878A patent/EP0411122B1/en not_active Expired - Lifetime
- 1988-12-23 US US07/397,420 patent/US5198150A/en not_active Expired - Lifetime
- 1988-12-23 AT AT89900878T patent/ATE87022T1/de not_active IP Right Cessation
- 1988-12-23 KR KR1019890701603A patent/KR930002767B1/ko not_active IP Right Cessation
- 1988-12-23 AU AU29058/89A patent/AU603725B2/en not_active Ceased
- 1988-12-23 BR BR888807389A patent/BR8807389A/pt not_active IP Right Cessation
- 1988-12-23 DE DE8989900878T patent/DE3879511T2/de not_active Expired - Fee Related
- 1988-12-23 WO PCT/JP1988/001295 patent/WO1989006265A1/ja active IP Right Grant
-
1989
- 1989-08-22 DK DK411189A patent/DK411189A/da not_active Application Discontinuation
- 1989-08-24 FI FI893988A patent/FI94144C/fi not_active IP Right Cessation
- 1989-08-24 NO NO893413A patent/NO176612C/no unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61219679A (ja) * | 1985-03-26 | 1986-09-30 | Konishiroku Photo Ind Co Ltd | インクリボンカセツト |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0411610A2 (en) * | 1989-08-01 | 1991-02-06 | Chisso Corporation | Ferroelectric liquid crystal composition and light switching device using said composition |
EP0411610A3 (en) * | 1989-08-01 | 1992-02-19 | Chisso Corporation | Ferroelectric liquid crystal composition and light switching device using said composition |
EP0427195A2 (en) * | 1989-11-07 | 1991-05-15 | Chisso Corporation | A ferroelectric liquid crystal composition |
EP0427195A3 (en) * | 1989-11-07 | 1992-03-18 | Chisso Corporation | A ferroelectric liquid crystal composition |
EP0458087A2 (en) * | 1990-05-23 | 1991-11-27 | Chisso Corporation | A ferroelectric liquid crystal composition |
EP0458087A3 (en) * | 1990-05-23 | 1992-04-01 | Chisso Corporation | A ferroelectric liquid crystal composition |
Also Published As
Publication number | Publication date |
---|---|
KR930002767B1 (ko) | 1993-04-10 |
EP0411122A1 (en) | 1991-02-06 |
FI94144B (fi) | 1995-04-13 |
NO893413D0 (no) | 1989-08-24 |
JP2525214B2 (ja) | 1996-08-14 |
ATE87022T1 (de) | 1993-04-15 |
DE3879511D1 (de) | 1993-04-22 |
EP0411122A4 (en) | 1991-04-10 |
DK411189A (da) | 1989-10-17 |
NO176612B (no) | 1995-01-23 |
AU603725B2 (en) | 1990-11-22 |
EP0411122B1 (en) | 1993-03-17 |
FI94144C (fi) | 1995-07-25 |
NO893413L (no) | 1989-08-24 |
FI893988A0 (fi) | 1989-08-24 |
BR8807389A (pt) | 1990-03-20 |
DK411189D0 (da) | 1989-08-22 |
JPH01168793A (ja) | 1989-07-04 |
US5198150A (en) | 1993-03-30 |
KR900700575A (ko) | 1990-08-16 |
FI893988A (fi) | 1989-08-24 |
NO176612C (no) | 1995-05-10 |
AU2905889A (en) | 1989-08-01 |
DE3879511T2 (de) | 1993-09-02 |
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