JPS62131235A - Liquid crystal mixed with magnetic body particle and preparation of said liquid crystal - Google Patents

Liquid crystal mixed with magnetic body particle and preparation of said liquid crystal

Info

Publication number
JPS62131235A
JPS62131235A JP27216685A JP27216685A JPS62131235A JP S62131235 A JPS62131235 A JP S62131235A JP 27216685 A JP27216685 A JP 27216685A JP 27216685 A JP27216685 A JP 27216685A JP S62131235 A JPS62131235 A JP S62131235A
Authority
JP
Japan
Prior art keywords
liquid crystal
magnetic particles
magnetic
oriented
magnetic body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP27216685A
Other languages
Japanese (ja)
Other versions
JPH0584885B2 (en
Inventor
Masayoshi Takatake
正義 高武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
I Pex Inc
Original Assignee
Dai Ichi Seiko Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dai Ichi Seiko Co Ltd filed Critical Dai Ichi Seiko Co Ltd
Priority to JP27216685A priority Critical patent/JPS62131235A/en
Priority to US06/936,180 priority patent/US4701024A/en
Publication of JPS62131235A publication Critical patent/JPS62131235A/en
Publication of JPH0584885B2 publication Critical patent/JPH0584885B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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
    • C09K19/56—Aligning agents
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/13768—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on magneto-optical effects

Abstract

PURPOSE:To impart switching function functioning by the effect of magnetic field easily to a liquid crystal display device by dispersing many acicular magnetic body particles covered with a surface active agent in a liquid crystal material for a liquid crystal display device. CONSTITUTION:Magnetic body particles 1 (having ca. 0.5mu length) are oriented almost perpendicularly to the face of electrodes 6, 7 along liquid crystal molecules 2 (having ca. 50Angstrom length) which are oriented tortionally in the stage of generating no electric field, and oriented almost parallelly in the stage of impression of an electric field by the liquid crystal molecules 2 which are oriented perpendicularly. When a magnet is brought near in the stage of impressing electric field, the magnetic body particles 1 are oriented perpendicularly to the face of electrodes 6, 7 by the magnetic force of the magnet. A part of the liquid crystal molecules 2 sticking to the magnetic body particles is oriented parallelly. Thus, electric capacity of the space between the electrodes 6, 7 is varied, which is utilized as inputted information signal.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は磁性体粒子を混入した液晶及びその製造方法、
更に詳細には本件出願人が特願昭５９−２２６９８１号
で既に提案したタッチエントリ付液晶表示装置に使用す
る液晶及びその製造方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a liquid crystal mixed with magnetic particles and a method for manufacturing the same;
More specifically, the present invention relates to a liquid crystal used in a liquid crystal display device with touch entry and a method for manufacturing the same, which the present applicant has already proposed in Japanese Patent Application No. 59-226981.

〔従来の技術〕[Conventional technology]

コンピュータ等においてその表示部に直接タッチするこ
とにより入力できるようにすると便利である。このよう
な入力装置として現在抵抗１１り方式、音響万代、容量
方式、光電方式等が提案されている。It is convenient to be able to input information by directly touching the display section of a computer or the like. As such input devices, resistor type, acoustic type, capacitive type, photoelectric type, etc. are currently proposed.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかし上記のものは何れも表示装置とは別に設けた装置
により入力している。However, all of the above inputs are input using a device provided separately from the display device.

本発明者は表示装置自体が人力装置として機能するもの
としてＬ記タッチエン１−り付液晶表示装置を提案し、
本発明はそれに使用する）夜晶及びその製造方法を提供
するものである。The present inventor has proposed a liquid crystal display device with an L touch button as a device in which the display device itself functions as a human-powered device,
The present invention provides a night crystal used therein and a method for producing the same.

〔問題点を解決するだめの手段〕[Failure to solve the problem]

本発明は液晶表示セル用の液晶材中に、界面活性剤によ
り被覆された多数の針状磁性体粒子を分散させてなるも
のである。The present invention is made by dispersing a large number of acicular magnetic particles coated with a surfactant in a liquid crystal material for a liquid crystal display cell.

本発明は各種磁性体粒子の表面を液晶分子の長軸が磁性
体表面に垂直に配向し、かつ磁性体の凝集を防止し、液
晶中に磁性体粒子を均一安定に分散させる界面活性剤で
処理し、液晶と親和性のある液晶用の溶媒「１喝こ分散
させ、次に上記磁性体粒子をこの溶媒とともに液晶中に
混入し、しかるのちにこの溶媒を揮発除去して磁性体粒
子を液晶内に均一安定に混入した液晶の製造法である。The present invention is a surfactant that allows the long axes of liquid crystal molecules to align perpendicularly to the surface of the magnetic material on the surface of various magnetic particles, prevents agglomeration of the magnetic material, and disperses the magnetic particles uniformly and stably in the liquid crystal. The magnetic particles are then mixed into the liquid crystal together with the solvent, and the solvent is then removed by evaporation to remove the magnetic particles. This is a method for producing liquid crystal that is uniformly and stably mixed into the liquid crystal.

上記各種磁性体粒子は各種フェライ１へ、各種２メタル
のいずれか一つの針状の％Ｓ’ｘ性体粒吊体粒子。The above-mentioned various magnetic particles are transferred to various types of Ferrite 1, into acicular %S'x suspended particles of any one of two types of metals.

上記界面活性剤は液晶分子の長軸が＆Ｉ磁性体表面垂直
に配向し、かつ磁性体の凝集を防止し、液晶中に磁性体
粒子を均一安定に分散させるもので、−塩基性カルボン
酸多核クロム錯体、ジメチルオクタデシルアミノプロピ
ルトリメＩ・キシルク（コライド、及び有機シラン化合
物のいずれか一つである。The above surfactant is one in which the long axes of liquid crystal molecules are oriented perpendicularly to the surface of the &I magnetic material, prevents agglomeration of the magnetic material, and uniformly and stably disperses the magnetic particles in the liquid crystal. Any one of a chromium complex, dimethyloctadecylaminopropyltrimethyl-xylyl (collide), and an organic silane compound.

上記液晶用の溶媒はトルエン、キシレン、アセトン及び
クロロホルムのいずれか一つである。The solvent for the liquid crystal is any one of toluene, xylene, acetone, and chloroform.

〔作　用〕[For production]

次に本発明の作用を第１図につき説明する。 Next, the operation of the present invention will be explained with reference to FIG.

石ｎ性体粒子１を液晶中に均一、安定に分散させ、しか
も液晶分子２をその表面に垂直に配向させる界面活性剤
３で磁性体粒子１の表面を処理し、これをアセトン及び
クロロホルム等に分散し、液晶に混入し、しかるのちに
これらを除去し磁性体粒子ｌを液晶内に混入すると、液
晶分子２は磁性体粒子１の表面に付着した界面活性剤３
により垂直に配向する。The surface of the magnetic particles 1 is treated with a surfactant 3 that allows the magnetic particles 1 to be uniformly and stably dispersed in the liquid crystal and also orients the liquid crystal molecules 2 perpendicularly to the surface. When these are removed and the magnetic particles 1 are mixed into the liquid crystal, the liquid crystal molecules 2 are mixed with the surfactant 3 attached to the surface of the magnetic particles 1.
vertically oriented.

次に上記液晶により製造した液晶表示セルの作用を第２
．３．４図につき説明する。Next, we will explain the operation of the liquid crystal display cell manufactured using the above liquid crystal in a second manner.
．． 3.4 This will be explained with reference to Figure 4.

第２図において、４．５は内面に透明電極６゜７をコー
トし、かつ液晶分子２が互いに垂直に配向するようにラ
ビング処理した透明体、８，９は」二記透明体４．５の
外側に設けた互いに偏光方向が垂直になるようにした偏
光板である。光１０ば無電界時には第２図（１１）示の
ように透過できるが、電圧印加時には透過できない。こ
れらの関係は偏光板８，９の偏光の向きを平行にすわ、
ば反対となり、従来の液晶表示装置と同様である。In FIG. 2, 4.5 is a transparent body coated with a transparent electrode 6°7 on its inner surface and rubbed so that the liquid crystal molecules 2 are oriented perpendicularly to each other, and 8 and 9 are transparent bodies 4.5 This is a polarizing plate that is provided on the outside of the polarizing plate so that the directions of polarization are perpendicular to each other. The light 10 can be transmitted as shown in FIG. 2 (11) when there is no electric field, but cannot be transmitted when a voltage is applied. These relationships are based on the fact that the directions of polarized light of the polarizing plates 8 and 9 are parallel to each other,
In other words, it is the opposite, and is similar to a conventional liquid crystal display device.

磁性体粒子１　（長さ約０．５μ）は第２図示のように
無電界時にはねじれ配向している液晶分子２（長さ約５
０人）に沿って電極６．７の面に対し略垂直に配向して
いるが、第３図示の電圧印加時には垂直配向している液
晶分子２によってほぼ平ｉテに配向する。この電圧印加
状態で磁石を接近させるとその磁力により第４図示のよ
うに磁性体粒子■は電極６．７の面に対し垂直に配向し
、これによってそれに付着している液晶分子２は一部が
平行になり、電極６．７間の電気容量が変化し、これを
人力ｔｎ　ｔ［ｊ信号とすることができるものである。As shown in the second diagram, the magnetic particles 1 (length approximately 0.5 μm) are twisted and oriented in the absence of an electric field.
The liquid crystal molecules 2 are aligned substantially perpendicularly to the plane of the electrodes 6.7 along the horizontal axis (0), but when a voltage is applied as shown in FIG. When a magnet is brought close to the electrode 6.7 under this voltage applied state, its magnetic force causes the magnetic particles (2) to align perpendicularly to the surface of the electrode 6.7, as shown in the fourth figure, and as a result, some of the liquid crystal molecules 2 attached to it are oriented. become parallel, the capacitance between the electrodes 6 and 7 changes, and this can be used as a human-powered signal tnt[j.

〔実施例〕〔Example〕

漫組性上 各種磁性体粒子（各種フェライト、各種メタル）を液晶
の長軸が磁性体粒子表面Ｇこ垂直に配向ししかも液晶中
で磁性体粒子の凝集を防止し液晶中に均一、安定に分散
させる事のできる界面゛活性剤（−塩基性カルボン酸多
核クロム錯体、ジメチルオクタデシルアミロプロビルト
リメトキシルクロライド（ＤＭＯＡＰ）　、各種界面活
性剤、各種シランカップリング剤）で表面処理を行い液
晶を良く熔かすクロロホルム、アセトンなどに分散させ
、この溶媒とともに液晶中に混入し、しかるのちにこの
溶媒を揮発除去してなる磁性体粒子を均一、安定に混入
した液晶（、各種ネマティック液晶）が得られた。Due to the magnetic structure, various magnetic particles (various ferrites, various metals) are oriented so that the long axis of the liquid crystal is perpendicular to the surface G of the magnetic particles, and also prevents agglomeration of the magnetic particles in the liquid crystal, making them uniform and stable in the liquid crystal. Surface treatment with a surfactant that can disperse (basic carboxylic acid polynuclear chromium complex, dimethyloctadecylamyloprobyl trimethoxyl chloride (DMOAP), various surfactants, various silane coupling agents) improves the liquid crystal. By dispersing it in molten chloroform, acetone, etc., mixing it with this solvent into the liquid crystal, and then volatilizing off the solvent, you can obtain liquid crystals (and various nematic liquid crystals) in which magnetic particles are mixed evenly and stably. Ta.

実施例２ 上記ＤＭＯＡＰを２重量部混入したメタノール溶液中に
メタル粉（平均粒子サイズ０．２μ）３ｇを混入し、ボ
ールミルで５日間粉砕し、しかるのちメタノールを揮発
除去し、１２０　’Ｃ，２０分間焼成し、アセトンで３
回洗浄後超音波分散処理を行いアセトン中にコロイド状
に分散したメタル粉を得た。Example 2 3 g of metal powder (average particle size 0.2 μ) was mixed into a methanol solution containing 2 parts by weight of the above DMOAP, ground in a ball mill for 5 days, then methanol was removed by volatilization, and the mixture was heated at 120'C, 20 Bake for 3 minutes and add 3 minutes with acetone.
After washing twice, ultrasonic dispersion treatment was performed to obtain metal powder colloidally dispersed in acetone.

このコロイド状溶液に遠心分離（４０００ｒｐｍ　　２
０分間）を行い、その上澄み液にＰ型ネマティック液晶
を混入し、アセトンを真空揮発除去し、メタル混入液晶
を得、ごれに超音波分散処理（３０分）をほどこし、メ
タルが均一安定に分散した液晶を得た。This colloidal solution was centrifuged (4000 rpm 2
0 minutes), P-type nematic liquid crystal was mixed into the supernatant liquid, acetone was removed by vacuum evaporation, metal-containing liquid crystal was obtained, and the dirt was subjected to ultrasonic dispersion treatment (30 minutes) to make the metal uniform and stable. A dispersed liquid crystal was obtained.

μＨＩＩ３ 磁性体微粉としてメタル（Ｆｅ粒子：０．２μ、アスペ
クト比１０：１）にジメチルオクタデシルアミノプロピ
ルトリメ１−キシルクロライド（ＤＭＯＡＰ）で表面処
理を行い、これをＰ型ネマティンク液晶にドーピングし
て、磁性体微粒子ドーピング液晶を作り、これを第５図
（＜）　（［り示の試験用液晶セル（ポリビニルアルコ
ール マティノク（ＴＮ）／ｌ！晶セル）に充填し、テスト用
液晶スイッチを作った。図中１１　、　１２はボラ口・
イドフィルＪ、、１３　、１４は透明ム（材、１５　、
　１６はインジウム錫酸化物（ＩＴＯ）電極、１７．１
８は配向層、２０はスペーサ、２１は本発明による液晶
でそのドｙｈ２２の大きさはＩＯＸＩＯ膳諷、セル厚約
２０７７である。μHII3 Metal (Fe particles: 0.2μ, aspect ratio 10:1) as magnetic fine powder was surface-treated with dimethyloctadecylaminopropyltrimethyl-1-xyl chloride (DMOAP), and P-type nematink liquid crystal was doped with this. A liquid crystal doped with magnetic fine particles was prepared, and it was filled into a test liquid crystal cell (polyvinyl alcohol matinoku (TN)/l! crystal cell) shown in Figure 5 (<) to make a test liquid crystal switch. .11 and 12 in the figure are mullet mouths.
Idofil J, 13, 14 are transparent materials (material, 15,
16 is an indium tin oxide (ITO) electrode, 17.1
8 is an alignment layer, 20 is a spacer, and 21 is a liquid crystal according to the present invention, the size of which is IOXIO, and the cell thickness is approximately 2077 mm.

この液晶セルスイッチよりなる２枚の支持板に垂直にマ
グネットを近付番ノ、液晶のキャパシタンスの変化をＬ
ＣＩＩＩメータにて測定した。この試験結果を第１表に
示した。By placing a magnet perpendicularly close to the two support plates made of this liquid crystal cell switch, the change in capacitance of the liquid crystal can be measured by
Measured using a CIII meter. The test results are shown in Table 1.

上記表から明らかなように本発明による磁性体微粉をド
ーピングした液晶を充填してなる液晶セルは非常に弱い
磁界（数十Ｇ　ａ　ｕ　ｓ　ｓ　）で容易にキャパシタ
ンスの変化を引き起こし、有効なスイッチ機能をもつ液
晶スイッチを提供できることが確認された。As is clear from the above table, the liquid crystal cell filled with liquid crystal doped with magnetic fine powder according to the present invention easily causes a change in capacitance in a very weak magnetic field (several tens of Gauss), and is not an effective switch. It has been confirmed that it is possible to provide a functional liquid crystal switch.

〔発明の効果〕〔Effect of the invention〕

本発明により液晶分子が磁性体粒子に垂直に配向し、そ
の磁性体を液晶中に均一，安定に分散させた磁性体粒子
混入液晶を製造でき、またこの磁性体微粒子をドーピン
グした液晶を充填してなる液晶セルは比較的弱い磁界で
キャパシタンスの変化をおこし、スイッチ機能を有する
。したがって本発明により従来の電気光学効果を利用し
た各種液晶表示装置に容易に磁界によるスインチング機
能を付与でき、これら液晶表示装置と一体となったエン
トリー装置が可能となり、例えばコンピュータ用の新し
い入力装置としてキーボードに代えて利用できるもので
ある。According to the present invention, it is possible to produce a liquid crystal containing magnetic particles in which the liquid crystal molecules are aligned perpendicularly to the magnetic particles, and the magnetic substance is uniformly and stably dispersed in the liquid crystal. A liquid crystal cell made of a liquid crystal cell changes its capacitance with a relatively weak magnetic field, and has a switching function. Therefore, according to the present invention, it is possible to easily add a switching function using a magnetic field to various liquid crystal display devices that utilize the conventional electro-optic effect, and it is possible to create an entry device that is integrated with these liquid crystal display devices, which can be used as a new input device for computers, for example. It can be used in place of a keyboard.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の作用を示す説明図、第２図（イ）は本
発明による液晶セルの原理を示す説明用断面図、（ＩＩ
）は同斜視図、第３図（イ）は同電圧印加時の説明用断
面図、（１７）はその釘視図、第４図は同磁石を接近さ
せた状態における説明用断面図、第５図（イ）は実施例
３における試験用液晶セルの断面図、（口）はその平面
図である。 ■・・・・・・磁性体粒子、２・・・・・・液晶分子、
３・・・・・・界面活性剤。 、゛−一一一，。 代理人弁理士　　石　　戸　’：　　７Ｃ．　７・ｉｇ
”　：、　”＝，： ＋（、　、、−”；ｌ・′ ↓１劇 徂性ｕｈ＋ 喜３し Ｃづ）　　　　　　　　　　　　　　　　　　　　　　
　　（ロノ算　≦ｌｕ省FIG. 1 is an explanatory diagram showing the operation of the present invention, FIG. 2 (A) is an explanatory sectional view showing the principle of the liquid crystal cell according to the present invention,
) is a perspective view of the same, FIG. 3(A) is an explanatory cross-sectional view when the same voltage is applied, (17) is a nail-like view of the same, FIG. FIG. 5(A) is a cross-sectional view of the test liquid crystal cell in Example 3, and FIG. 5(A) is a plan view thereof. ■...Magnetic particles, 2...Liquid crystal molecules,
3...Surfactant. ,゛-111,. Representative Patent Attorney Ishito': 7C. 7・ig
”:, ”=,: +(, ,, -”;l・′ ↓1 dramatic uh+ joy 3 shi Czu)
(Lono calculation ≦lu ministry

Claims (5)

【特許請求の範囲】[Claims] （１）液晶表示セル用の液晶材中に、界面活性剤により
被覆された多数の針状磁性体粒子を分散させてなる磁性
体粒子を混入した液晶。(1) A liquid crystal in which magnetic particles obtained by dispersing a large number of acicular magnetic particles coated with a surfactant are mixed into a liquid crystal material for a liquid crystal display cell. （２）各種磁性体粒子の表面を液晶分子の長軸が磁性体
表面に垂直に配向し、かつ磁性体の凝集を防止し、液晶
中に磁性体粒子を均一安定に分散させる界面活性剤で処
理し、液晶と親和性のある液晶用の溶媒中に分散させ、
次に上記磁性体粒子をこの溶媒とともに液晶中に混入し
、しかるのちにこの溶媒を揮発除去して磁性体粒子を液
晶内に均一安定に混入した液晶の製造法。(2) A surfactant that aligns the long axis of liquid crystal molecules perpendicularly to the surface of the magnetic material on the surface of various magnetic particles, prevents agglomeration of the magnetic material, and disperses the magnetic particles uniformly and stably in the liquid crystal. processed and dispersed in a liquid crystal solvent that has an affinity for liquid crystals,
Next, the magnetic particles are mixed into the liquid crystal together with the solvent, and then the solvent is removed by volatilization to uniformly and stably mix the magnetic particles into the liquid crystal. （３）上記各種磁性体粒子は各種フェライト、各種メタ
ルのいずれか一つの針状の磁性体粒子である特許請求の
範囲第２項記載の液晶の製造方法。(3) The method for manufacturing a liquid crystal according to claim 2, wherein the various magnetic particles are acicular magnetic particles of any one of various ferrites and various metals. （４）上記液晶分子の長軸が磁性体表面に垂直に配向し
、かつ磁性体の凝集を防止し、液晶中に磁性体粒子を均
一安定に分散させる界面活性剤は一塩基性カルボン酸多
核クロム錯体、ジメチルオクタデシルアミノプロピルト
リメトキシルクロライド、及び有機シラン化合物のいず
れか一つである特許請求の範囲第２項記載の液晶の製造
方法。(4) The surfactant, in which the long axis of the liquid crystal molecules is oriented perpendicularly to the surface of the magnetic material, prevents agglomeration of the magnetic material, and disperses the magnetic particles uniformly and stably in the liquid crystal, is a monobasic carboxylic acid polynuclear 3. The method for producing a liquid crystal according to claim 2, wherein the liquid crystal is any one of a chromium complex, dimethyloctadecylaminopropyltrimethoxyl chloride, and an organic silane compound. （５）上記液晶用の溶媒はトルエン、キシレン、アセト
ン及びクロロホルムのいずれか一つである特許請求の範
囲第２項記載の液晶の製造方法。(5) The method for producing a liquid crystal according to claim 2, wherein the solvent for the liquid crystal is any one of toluene, xylene, acetone, and chloroform.
JP27216685A 1985-12-02 1985-12-02 Liquid crystal mixed with magnetic body particle and preparation of said liquid crystal Granted JPS62131235A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP27216685A JPS62131235A (en) 1985-12-02 1985-12-02 Liquid crystal mixed with magnetic body particle and preparation of said liquid crystal
US06/936,180 US4701024A (en) 1985-12-02 1986-12-01 Liquid crystal material including magnetic particles and method of producing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27216685A JPS62131235A (en) 1985-12-02 1985-12-02 Liquid crystal mixed with magnetic body particle and preparation of said liquid crystal

Publications (2)

Publication Number Publication Date
JPS62131235A true JPS62131235A (en) 1987-06-13
JPH0584885B2 JPH0584885B2 (en) 1993-12-03

Family

ID=17509998

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27216685A Granted JPS62131235A (en) 1985-12-02 1985-12-02 Liquid crystal mixed with magnetic body particle and preparation of said liquid crystal

Country Status (1)

Country Link
JP (1) JPS62131235A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60194424A (en) * 1984-03-16 1985-10-02 Seiko Epson Corp Electrooptical light bulb

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60194424A (en) * 1984-03-16 1985-10-02 Seiko Epson Corp Electrooptical light bulb

Also Published As

Publication number Publication date
JPH0584885B2 (en) 1993-12-03

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