JP3083477B2 - Liquid crystal alignment film, method of manufacturing the same, and liquid crystal display device using the same - Google Patents
Liquid crystal alignment film, method of manufacturing the same, and liquid crystal display device using the sameInfo
- Publication number
- JP3083477B2 JP3083477B2 JP08098212A JP9821296A JP3083477B2 JP 3083477 B2 JP3083477 B2 JP 3083477B2 JP 08098212 A JP08098212 A JP 08098212A JP 9821296 A JP9821296 A JP 9821296A JP 3083477 B2 JP3083477 B2 JP 3083477B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- silane
- alignment film
- based surfactant
- electrode
- 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.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Physics & Mathematics (AREA)
- Composite Materials (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、液晶を用いた画像
表示装置およびその製造方法に関するものである。[0001] 1. Field of the Invention [0002] The present invention relates to an image display device using a liquid crystal and a method of manufacturing the same.
【０００２】さらに詳しくは、ＴＶ画像やコンピュータ
画像等を表示する液晶を用いた平面表示パネルに用いる
液晶配向膜およびその製造方法およびそれを用いた液晶
表示装置とその製造方法に関するものである。More specifically, the present invention relates to a liquid crystal alignment film used for a flat display panel using a liquid crystal for displaying a TV image, a computer image, and the like, a method of manufacturing the same, a liquid crystal display device using the same, and a method of manufacturing the same.
【０００３】[0003]
【従来の技術】従来カラー液晶表示パネルは、マトリッ
クス状に配置された対向電極を形成した２つの基板の間
にポリビニルアルコールやポリイミドをスピナーで塗布
した後ラビングした液晶配向膜を介して液晶を封入した
装置が一般的であった。2. Description of the Related Art In a conventional color liquid crystal display panel, a liquid crystal is sealed through a liquid crystal alignment film rubbed after applying polyvinyl alcohol or polyimide with a spinner between two substrates having opposed electrodes arranged in a matrix. The equipment used was common.
【０００４】例えば、図８に示すように、予め、第１の
ガラス基板３１上に画素電極３２を持ったＴＦＴアレイ
３３を形成したものと、第２のガラス基板３４上に複数
個の赤青緑のカラーフィルター３５が形成され、さらに
その上に共通透明電極３６が形成されたもののそれぞれ
に、ポリビニルアルコールやポリイミドをスピナーを用
いて回転塗布形成し、ラビングを行ない液晶配向膜３７
を形成し、スペーサー３８を介して対向して接着剤３９
で接着し組み立てた後、ツイストネマチック（ＴＮ）液
晶４０等を注入しパネル構造を形成した後、パネルの裏
表に偏光板４１、４２を設置し、バックライト４３を照
射しながら、ＴＦＴを動作させ矢印Ａの方向にカラー画
像を表示する構造である。For example, as shown in FIG. 8, a TFT array 33 having a pixel electrode 32 formed on a first glass substrate 31 in advance and a plurality of red-blue A green color filter 35 is formed, and a common transparent electrode 36 is further formed thereon. On each of the green color filters 35, polyvinyl alcohol or polyimide is spin-coated using a spinner and rubbed to form a liquid crystal alignment film 37.
Is formed, and the adhesive 39
After assembling and bonding, twisted nematic (TN) liquid crystal 40 and the like are injected to form a panel structure. Then, polarizing plates 41 and 42 are installed on the front and back of the panel. This is a structure for displaying a color image in the direction of arrow A.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、従来の
配向膜の作成は、ポリビニルアルコールやポリイミドを
有機溶媒に溶解させ回転塗布法などを用いて塗布形成し
た後、フェルト布等を用いてラビングを行なう方法が用
いられていたため、大面積パネル（例えば１４インチデ
ィスプレイ）では配向膜の均一コーティングが難しいと
いう課題があった。However, in the conventional method of forming an alignment film, polyvinyl alcohol or polyimide is dissolved in an organic solvent, coated by a spin coating method or the like, and then rubbed by a felt cloth or the like. Since the method is used, there is a problem that it is difficult to uniformly coat the alignment film on a large-area panel (for example, a 14-inch display).
【０００６】また、回転塗布では塗布厚が数ミクロン程
度にもなり、強誘電液晶のような１０００オングストロ
ーム程度の厚みの配向膜を必要とする表示パネルでは、
性能が大幅に低減されるという大きな欠点があった。On the other hand, in the case of a display panel which requires an alignment film having a thickness of about 1000 angstroms, such as a ferroelectric liquid crystal, the coating thickness becomes about several microns in spin coating.
There was a major drawback in that performance was significantly reduced.
【０００７】本発明は、大面積パネルにも容易に均一形
成でき、かつ極めて薄い配向膜と、その製造方法、その
配向膜を用いた液晶表示装置及びその製造方法を提供す
ることを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide an alignment film which can be easily and uniformly formed on a large area panel and which is extremely thin, a method for manufacturing the same, a liquid crystal display device using the alignment film, and a method for manufacturing the same. .
【０００８】[0008]
【課題を解決するための手段】本発明は、直鎖状の炭素
鎖を有するシラン系界面活性剤が、電極上に直接又は任
意の薄膜を介して間接的に化学吸着して形成された単分
子膜を用いた液晶配向膜およびその製造方法で、従来の
課題を解決したものである。SUMMARY OF THE INVENTION The present invention is directed to a method for forming a silane-based surfactant having a straight-chain carbon chain by direct chemical adsorption on an electrode or indirectly through an arbitrary thin film. A liquid crystal alignment film using a molecular film and a method for manufacturing the same solve the conventional problems.
【０００９】[0009]
【発明の実施の形態】液晶表示装置に使用される配向膜
に化学吸着法を用いることにより、高能率で均一かつ薄
い配向膜を作成できる。DESCRIPTION OF THE PREFERRED EMBODIMENTS By using a chemical adsorption method for an alignment film used in a liquid crystal display device, a highly efficient, uniform and thin alignment film can be formed.
【００１０】以下、実施例を図１〜図７を用いて説明す
る。図１に示すように、例えばガラスや石英等の親水性
の基板１をよく乾燥した後、直接表面に化学吸着法によ
り全面シラン界面活性剤を吸着反応させて、シラン界面
活性剤よりなる単分子吸着膜２を形成する（図１中、Ｒ
1 、Ｒ2 は置換基を示すがＨでもよい）。An embodiment will be described below with reference to FIGS. As shown in FIG. 1, for example, after a hydrophilic substrate 1 such as glass or quartz is thoroughly dried, a silane surfactant is adsorbed and reacted on the entire surface by a chemisorption method to form a single molecule composed of the silane surfactant. An adsorption film 2 is formed (R in FIG. 1).
1 and R 2 represent a substituent, but may be H).
【００１１】即ち例えば図１に示したような配向膜は、
以下のようにして製造される。シラン界面活性剤として
直鎖状の長い炭素鎖３、例えばＲ1 −（ＣＨ2 ）n −Ｓ
ｉＣｌ3 （ｎは整数で１０〜２５程度が最も扱い易く、
配向効果も大きい）を持つと、直鎖状の短い炭素鎖４、
例えばＲ2 −（ＣＨ2 ）m −ＳｉＣｌ3 （ｍは整数で、
例えばｎが１０〜２５の場合にはｍは１〜５が、配向効
果が大きい。またｎとｍとの差は５以上が望ましい）を
持つとを、例えば１：２に混合して用い（なお、直鎖状
の長い炭素鎖と、短い炭素鎖のシラン系界面活性剤との
混合比は、１：０〜１：１０の範囲が適当である）、２
×１０-3〜５×１０-2ｍｏｌ／ｌ程度の濃度で溶かした
８０％ｎ−ヘキサデカン、１２％四塩化炭素、８％クロ
ロホルム溶液を調整し、前記基板１を浸漬する。That is, for example, an alignment film as shown in FIG.
It is manufactured as follows. As the silane surfactant, a long linear carbon chain 3, for example, R 1- (CH 2 ) n -S
iCl 3 (n is an integer of about 10 to 25 which is the easiest to handle,
Having a large orientation effect), a short linear carbon chain 4,
For example R 2 - (CH 2) m -SiCl 3 (m is an integer,
For example, when n is 10 to 25, m is 1 to 5, and the orientation effect is large. Further, having a difference between n and m of preferably 5 or more is used, for example, in a ratio of 1: 2 (note that a long linear carbon chain and a short carbon chain silane-based surfactant are used). The mixing ratio is suitably in the range of 1: 0 to 1:10), 2
An 80% n-hexadecane, 12% carbon tetrachloride, 8% chloroform solution dissolved at a concentration of about × 10 −3 to 5 × 10 −2 mol / l is prepared, and the substrate 1 is immersed.
【００１２】このとき、前記基板１は表面が親水性であ
り、表面には−ＯＨ基が含まれている。従って、−Ｓｉ
Ｃｌ3 基と−ＯＨが脱塩酸反応してAt this time, the surface of the substrate 1 is hydrophilic, and the surface contains -OH groups. Therefore, -Si
The Cl 3 group and -OH undergo a dehydrochlorination reaction.
【００１３】[0013]
【化１】 Embedded image
【００１４】の結合が生成され、シラン界面活性剤によ
る単分子吸着膜２が基板表面に１層形成され、その厚み
は例えば１０〜３０Ａ程度である。即ち、基板表面に発
水性の長さの異なる直鎖状の炭素鎖で、特定の比率で並
んだ状態の単分子膜２が形成される。Thus, a monomolecular adsorption film 2 made of a silane surfactant is formed as a single layer on the surface of the substrate, and its thickness is, for example, about 10 to 30A. That is, the monomolecular films 2 are formed on the substrate surface with linear carbon chains having different water-producing lengths arranged in a specific ratio.
【００１５】従って、この様な配向膜の形成された基板
に液晶が接すると、図２に示すように液晶５の分子は、
単分子吸着膜の長い炭素鎖３ａの間隙に入り込み、全体
として液晶の配向角度が制御される。なおここで３ａ及
び４ａは、図１における長い炭素鎖３と短い炭素鎖４を
それぞれ模式的に示したものである。Therefore, when the liquid crystal comes into contact with the substrate on which such an alignment film is formed, as shown in FIG.
The liquid crystal enters the gap between the long carbon chains 3a of the monomolecular adsorption film, and the orientation angle of the liquid crystal is controlled as a whole. Here, 3a and 4a schematically show the long carbon chain 3 and the short carbon chain 4 in FIG. 1, respectively.
【００１６】なお、化学吸着用の材料としては、−ＯＨ
基に対して結合性を有する基（例えばモノクロロシラン
基The material for chemical adsorption is -OH
A group having a binding property to a group (for example, a monochlorosilane group)
【００１７】[0017]
【化２】 Embedded image
【００１８】等を含んでいれば、実施例で示したシラン
系界面活性剤に限定されるものではない。As long as the silane-based surfactant is contained, the present invention is not limited to the silane-based surfactant shown in the examples.
【００１９】例えば、直鎖状の炭素鎖の一部にＦ（フッ
素）を含むシラン界面活性剤、例えばＣＦ3 −（Ｃ
Ｈ2 ）n −ＳｉＣｌ3 （ｎは整数で１０〜２５程度が最
も扱いやすい）、またはＣＦ3 −（ＣＦ2 ）m （Ｃ
Ｈ2 ）n −ＳｉＣｌ3 （ｍ、ｎは整数で、合計が１０〜
２５が最も扱い易い。）等を用いても、単分子吸着膜を
製造できる。For example, a silane surfactant containing F (fluorine) in a part of a linear carbon chain, for example, CF 3- (C
H 2 ) n —SiCl 3 (n is an integer of about 10 to 25 which is easiest to handle) or CF 3 — (CF 2 ) m (C
H 2 ) n —SiCl 3 (m and n are integers and the total is 10
25 is the easiest to handle. ) Can be used to produce a monomolecular adsorption film.
【００２０】また、直鎖状の長い炭素鎖の一部が任意の
置換基（Ｒ1 ）で、他の一端がトリクロロシラン基のシ
ラン系界面活性剤と、直鎖状の短い炭素鎖の一部が任意
の置換基（Ｒ2 ）で、他の一端がトリクロロシラン基の
シラン系界面活性剤を所定の比率で混合し、吸着形成を
行えば配向特性を変化させることも可能である。A part of the long linear carbon chain is an arbitrary substituent (R 1 ), and the other end is a trichlorosilane group-containing silane-based surfactant. If the part is an arbitrary substituent (R 2 ) and the other end is mixed with a silane-based surfactant having a trichlorosilane group at a predetermined ratio, and the mixture is adsorbed, the orientation characteristics can be changed.
【００２１】ここで上述した任意の置換基Ｒ1 もしくは
Ｒ2 としては、例えば水素，ビニル基，メチルエチニル
基等、液晶分子の配向を妨げない置換基であれば何れで
もよい。The above-mentioned optional substituent R 1 or R 2 may be any substituent which does not hinder the alignment of liquid crystal molecules, such as hydrogen, vinyl group and methylethynyl group.
【００２２】また図３に示したように、封入する液晶と
同じ液晶分子（例えばネマティック液晶部６）を、置換
基の一部に結合したシラン系界面活性剤と、短い炭素鎖
を持つシラン系界面活性剤とを所定の比率で混合し、吸
着形成を行えば、封入する特定の液晶に対して特に配向
特性の優れた配向膜が得られる（図３中、Ｒ3 は、通常
炭化水素鎖の置換基を示すがＨでもよい）。As shown in FIG. 3, the same liquid crystal molecules as the liquid crystal to be sealed (for example, a nematic liquid crystal part 6) are combined with a silane-based surfactant bonded to a part of a substituent and a silane-based surfactant having a short carbon chain. a surfactant were mixed in a predetermined ratio, by performing the adsorption formation, in excellent alignment film can be obtained (FIG. 3 particularly orientation characteristics for the particular liquid crystal encapsulating, R 3 is typically a hydrocarbon chain Represents a substituent, but may be H).
【００２３】従って図４に示したように、この様なネマ
ティック液晶部６ａを持つ配向膜の形成された基板にネ
マティック液晶７が接すると、ネマティック液晶７の分
子は単分子吸着膜のネマティック液晶部６ａの間隙に入
り込み、全体として液晶の配向角度が極めてよく制御さ
れる。なおここで６ａ及び４ａは、図３におけるネマテ
ィック液晶部６と短い炭素鎖４をそれぞれ模式的に示し
たものである。Therefore, as shown in FIG. 4, when the nematic liquid crystal 7 comes into contact with the substrate on which the alignment film having such a nematic liquid crystal part 6a is formed, the molecules of the nematic liquid crystal 7 become the nematic liquid crystal part of the monomolecular adsorption film. 6a, the orientation angle of the liquid crystal is very well controlled as a whole. Here, 6a and 4a schematically show the nematic liquid crystal part 6 and the short carbon chain 4 in FIG. 3, respectively.
【００２４】さらにまた図５に示したように、封入する
液晶分子が強誘電液晶である場合は、強誘電液晶部８が
結合したシラン系界面活性剤と、短い炭素鎖を持つシラ
ン系界面活性剤とを所定の比率で吸着形成すれば、単分
子吸着膜の配向膜を作成できる。Further, as shown in FIG. 5, when the liquid crystal molecules to be encapsulated are ferroelectric liquid crystals, a silane surfactant having a ferroelectric liquid crystal part 8 bonded thereto and a silane surfactant having a short carbon chain are used. If an agent is formed by adsorption at a predetermined ratio, an alignment film of a monomolecular adsorption film can be formed.
【００２５】なお、強誘電液晶としては、アゾメチン
系、アゾキシ系またはエステル系の何れかを用いること
が出来る。As the ferroelectric liquid crystal, any of an azomethine type, an azoxy type and an ester type can be used.
【００２６】またこの場合にも、この様な強誘電液晶部
８を持つ配向膜の形成された基板に強誘電液晶が接する
と、図６に示すように強誘電液晶９の分子は、単分子吸
着膜の強誘電液晶部８ａの間隙に入り込み、全体として
液晶の配向性が極めてよく制御される。なお、ここで、
８ａ及び４ａは、図５における強誘電液晶部８と短い炭
素鎖４とをそれぞれ模式的に示したものである。Also in this case, when the ferroelectric liquid crystal comes into contact with the substrate on which the alignment film having such a ferroelectric liquid crystal part 8 is formed, as shown in FIG. The liquid crystal enters into the gap between the ferroelectric liquid crystal portions 8a of the adsorption film, and the orientation of the liquid crystal is very well controlled as a whole. Here,
8a and 4a schematically show the ferroelectric liquid crystal part 8 and the short carbon chain 4 in FIG. 5, respectively.
【００２７】なお、以上の実施例では最も代表的なもの
として、所定の比率で混合された複数種のシラン系界面
活性剤を同時に化学吸着させた液晶配向膜の例、および
液晶分子を結合したシラン系界面活性剤と、短い炭素鎖
を持つシラン系界面活性剤とが、所定の比率で吸着形成
されている単分子膜よりなる液晶配向膜の例を示した
が、直鎖状の炭素鎖を含むシラン系界面活性剤のみで液
晶配向膜を吸着作成した場合には、前記液晶をほぼ垂直
に配向させることができる液晶配向膜を作成できた。In the above examples, the most typical examples are a liquid crystal alignment film in which a plurality of silane-based surfactants mixed at a predetermined ratio are simultaneously chemically adsorbed, and liquid crystal molecules are bonded. An example of a liquid crystal alignment film composed of a monomolecular film in which a silane-based surfactant and a silane-based surfactant having a short carbon chain are formed by adsorption at a predetermined ratio has been described. When the liquid crystal alignment film was adsorbed and formed only with a silane-based surfactant containing, a liquid crystal alignment film capable of aligning the liquid crystal almost vertically could be formed.
【００２８】さらに、この様な配向膜を用いて、液晶表
示装置を製造する場合、図７に示した一例に基づき説明
する。Further, a case of manufacturing a liquid crystal display device using such an alignment film will be described based on an example shown in FIG.
【００２９】あらかじめマトリックス状に載置された第
１の電極群１１と、この電極を駆動するトランジスター
群１２を有する第１の基板１３上と、第１の電極群と対
向するようにカラーフィルター群１４と、第２の電極１
５を載置した第２の基板１６上とを用意する。A first electrode group 11 previously mounted in a matrix, a first substrate 13 having a transistor group 12 for driving the electrodes, and a color filter group facing the first electrode group 14 and the second electrode 1
5 on the second substrate 16 on which is mounted.
【００３０】これら基板１３と基板１６をそれぞれシラ
ン系界面活性剤を有する非水系の有機溶媒中（例えばｎ
−パラフィンを用いれば、長い分子の配向を効率よく制
御することが出来、特にｎ−ヘキサデカンは、その効果
が著しい。）に浸漬し、シラン系界面活性剤を化学吸着
させ、それぞれの基板表面に直接前記活性剤のシリコン
と前記基板表面の自然酸化膜とを化学結合させて、液晶
配向膜用の単分子をそれぞれ各１層づつ形成する。The substrate 13 and the substrate 16 are each placed in a non-aqueous organic solvent having a silane-based surfactant (for example, n
-If paraffin is used, the orientation of long molecules can be controlled efficiently, and n-hexadecane is particularly effective. ) To chemically adsorb the silane-based surfactant, and chemically bond the silicon of the activator directly to the natural oxide film on the substrate surface to each substrate surface, thereby forming a single molecule for the liquid crystal alignment film. Each layer is formed one by one.
【００３１】なお基板１３及び基板１６の表面に例えば
ＳｉＯ2 等の薄膜を、例えばＣＶＤ法やスパッタ法を用
いて形成して用いてもよく、また例えばポリビニルアル
コール，ゼラチン等の親水性の高分子を塗布して用いて
もよい。A thin film of, for example, SiO 2 may be formed on the surfaces of the substrate 13 and the substrate 16 by using, for example, a CVD method or a sputtering method, or a hydrophilic polymer such as polyvinyl alcohol or gelatin may be used. May be applied.
【００３２】シラン系界面活性剤を化学結合させた第１
の基板１３と第２の基板１６とを、それぞれ電極が対向
するように位置合わせして、互いの基板にスペーサー１
８で間隙を設け、接着剤１９で固定する。The first chemically bonded silane-based surfactant
The substrate 13 and the second substrate 16, respectively electrodes are aligned so as to pair toward <br/>, spacers 1 to each other of the substrate
A gap is provided at 8 and fixed with an adhesive 19.
【００３３】このようにして形成された間隙に、所定の
液晶２０を注入する。その後、偏光板２１、２２を組み
合わせて完成する。A predetermined liquid crystal 20 is injected into the gap thus formed. After that, the polarizing plates 21 and 22 are combined to complete.
【００３４】この様なデバイスでは、バックライト２３
全面に照射しながら、ビデオ信号を用いて各々のトラン
ジスタを駆動すれば、矢印Ａの方向に映像を表示でき
る。In such a device, the backlight 23
By driving each transistor using a video signal while irradiating the entire surface, an image can be displayed in the direction of arrow A.
【００３５】なお本発明によれば、配向膜の製造工程で
ラビングは必ずしも必要ではないが、ラビングを行って
も良いことは勿論である。According to the present invention, rubbing is not always necessary in the process of manufacturing the alignment film, but it goes without saying that rubbing may be performed.
【００３６】[0036]
【発明の効果】以上述べてきた方法は、液晶配向膜の製
造に、電極表面に直接シラン界面活性剤を単分子状に１
層化学吸着させる方法を用いているため、高能率で均一
かつ薄く作成できる効果がある。According to the method described above, a silane surfactant is directly applied to the surface of an electrode in a monomolecular manner to produce a liquid crystal alignment film.
Since the method of performing layer chemical adsorption is used, there is an effect that a uniform and thin layer can be formed with high efficiency.
【００３７】さらに、吸着形成された配向膜は、特定の
液晶例えばネマティック液晶や強誘電液晶を結合させる
ことが可能なため、極めて配向制御性がよい。Further, since the alignment film formed by adsorption can bond a specific liquid crystal, for example, a nematic liquid crystal or a ferroelectric liquid crystal, the alignment controllability is very good.
【００３８】また、液晶と電極の間に挟まれる絶縁性の
膜としては極めて薄いので、液晶表示装置の駆動エネル
ギーを少なく出来る効果もある。Further, since the insulating film sandwiched between the liquid crystal and the electrode is extremely thin, there is an effect that the driving energy of the liquid crystal display device can be reduced.
【００３９】なお本発明の方法を用いた配向膜、及びこ
の配向膜を用いた液晶セルでは、分子内ダイポールの大
きな分子を特定の方向に向きをそろえて並べることがで
きるので、極めて大きな２次非線形光学効果を発現させ
ることも可能となる。In an alignment film using the method of the present invention and a liquid crystal cell using this alignment film, molecules having large intramolecular dipoles can be aligned in a specific direction, so that an extremely large secondary It is also possible to exhibit a nonlinear optical effect.
【図１】分子レベルまで拡大した概念図Fig. 1 Conceptual diagram expanded to the molecular level
【図２】液晶を封入した場合の液晶分子の配向の状態の
模式的図FIG. 2 is a schematic view of a state of alignment of liquid crystal molecules when a liquid crystal is sealed.
【図３】分子レベルまで拡大した概念図Fig. 3 Conceptual diagram expanded to the molecular level
【図４】液晶を封入した場合の液晶分子の配向の状態の
模式的図FIG. 4 is a schematic view of a state of alignment of liquid crystal molecules when a liquid crystal is sealed.
【図５】分子レベルまで拡大した概念図FIG. 5 is a conceptual diagram enlarged to a molecular level.
【図６】液晶を封入した場合の液晶分子の配向の状態の
模式的図FIG. 6 is a schematic diagram showing a state of alignment of liquid crystal molecules when a liquid crystal is sealed.
【図７】本発明の配向膜を用いた液晶表示デバイスの断
面概念図FIG. 7 is a conceptual cross-sectional view of a liquid crystal display device using the alignment film of the present invention.
【図８】従来の配向膜を用いた液晶表示デバイスの断面
概念図FIG. 8 is a conceptual cross-sectional view of a conventional liquid crystal display device using an alignment film.
１ 基板 ２ 単分子吸着膜 ３，３ａ 長い炭素鎖 ４，４ａ 短い炭素鎖 ５ 液晶 ６，６ａ ネマチック液晶部 ７ ネマチック液晶 ８，８ａ 強誘電液晶部 ９ 強誘電液晶 １７ 単分子配向膜 DESCRIPTION OF SYMBOLS 1 Substrate 2 Monomolecular adsorption film 3,3a Long carbon chain 4,4a Short carbon chain 5 Liquid crystal 6,6a Nematic liquid crystal part 7 Nematic liquid crystal 8,8a Ferroelectric liquid crystal part 9 Ferroelectric liquid crystal 17 Unimolecular alignment film
───────────────────────────────────────────────────── フロントページの続き (72)発明者 田村 秀治 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (56)参考文献 特開 昭59−9640（ＪＰ，Ａ) 特開 昭60−97324（ＪＰ，Ａ) 特開 昭62−220925（ＪＰ，Ａ) 特開 昭57−122419（ＪＰ，Ａ) 特開 昭61−55628（ＪＰ，Ａ) 特開 昭58−199324（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Shuji Tamura 1006 Kazuma Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-59-9640 (JP, A) JP-A-60- 97324 (JP, A) JP-A-62-220925 (JP, A) JP-A-57-122419 (JP, A) JP-A-61-55628 (JP, A) JP-A-58-199324 (JP, A)
Claims (7)
系界面活性剤を電極上に直接又は任意の薄膜を介して間
接に化学吸着させて結合形成された単分子膜であること
を特徴とする液晶配向膜。1. A monomolecular film formed by bonding a silane-based surfactant having a vinyl group and a straight-chain carbon chain to an electrode directly or indirectly through an optional thin film. Characteristic liquid crystal alignment film.
子の場合には、ネマティック液晶分子を置換基の一部に
結合したシラン系界面活性剤を電極上に直接又は任意の
薄膜を介して間接に化学吸着させて結合形成されたこと
を特徴とする液晶配向膜。2. The method according to claim 1, wherein the liquid crystal molecules to be enclosed are nematic liquid crystal components.
In the case of a particle, it is characterized in that a silane-based surfactant in which a nematic liquid crystal molecule is bonded to a part of a substituent is chemically adsorbed directly or indirectly through an arbitrary thin film on an electrode. Liquid crystal alignment film.
合には、強誘電液晶分子を置換基の一部に結合したシラ
ン系界面活性剤を電極上に直接又は任意の薄膜を介して
間接に化学吸着させて結合形成されたことを特徴とする
液晶配向膜。 3. The method according to claim 1, wherein the liquid crystal molecules to be encapsulated are ferroelectric liquid crystal molecules.
In this case, a ferroelectric liquid crystal molecule is
Surfactant on the electrode directly or through any thin film
Characterized by indirect chemical adsorption and bond formation
Liquid crystal alignment film.
を介して間接に、非水系の有機溶媒に溶かしたビニル基
を含むシラン系の界面活性剤、または非水系の有機溶媒
に所定の比率でビニル基を含むシラン系の界面活性剤と
他のシラン系界面活性剤を混合して溶かし、化学吸着さ
せて前記基板表面もしくは前記任意の薄膜表面に化学結
合した単分子膜を形成する工程を含むことを特徴とした
液晶配向膜の製造方法。4. A silane-based surfactant containing a vinyl group dissolved in a non-aqueous organic solvent directly or indirectly via a thin film on a predetermined substrate surface, or a predetermined ratio to a non-aqueous organic solvent. Mixing and dissolving a silane-based surfactant containing a vinyl group with another silane-based surfactant, and chemically adsorbing the mixture to form a monomolecular film chemically bonded to the substrate surface or the arbitrary thin film surface. A method for producing a liquid crystal alignment film, comprising:
シリル基を含んでいることを特徴とした請求項３記載の
液晶配向膜の製造方法。5. The method according to claim 3, wherein the silane-based surfactant contains at least a chlorosilyl group.
素鎖を持つシラン系界面活性剤、または封入する液晶分
子がネマティック液晶分子の場合には、ネマティック液
晶分子を置換基の一部に結合したシラン系界面活性剤を
化学吸着して作成した単分子膜状の液晶配向膜を有する
電極と対向する他の電極の間に液晶が挟まれていること
を特徴とする液晶表示装置。 6. A linear carbon having at least a vinyl group on its surface.
Silane-based surfactant with elemental chain or liquid crystal
When the molecule is a nematic liquid crystal molecule, the nematic liquid
Silane-based surfactants with crystalline molecules bonded to some of the substituents
Has a monomolecular liquid crystal alignment film formed by chemisorption
Liquid crystal sandwiched between the electrode and the other electrode
A liquid crystal display device characterized by the above-mentioned.
素鎖を持つシラン系界面活性剤、または封入する液晶分
子が強誘電液晶の場合には強誘電液晶分子を置換基の一
部に結合したシラン系界面活性剤を化学吸着して作成し
た単分子膜状の液晶配向膜を有する電極と対向する他の
電極の間に液晶が挟まれていることを特徴とする液晶表
示装置。 7. A linear carbon having at least a vinyl group on its surface.
Silane-based surfactant with elemental chain or liquid crystal
The ferroelectric liquid crystal molecule as a substituent when the
Of silane-based surfactant bound to the
Other electrode facing the electrode having the liquid crystal alignment film
Liquid crystal display characterized by liquid crystal sandwiched between electrodes
Indicating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08098212A JP3083477B2 (en) | 1996-04-19 | 1996-04-19 | Liquid crystal alignment film, method of manufacturing the same, and liquid crystal display device using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08098212A JP3083477B2 (en) | 1996-04-19 | 1996-04-19 | Liquid crystal alignment film, method of manufacturing the same, and liquid crystal display device using the same |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1340656A Division JP2558903B2 (en) | 1989-03-09 | 1989-12-29 | Liquid crystal alignment film, manufacturing method thereof, and liquid crystal display device using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08262452A JPH08262452A (en) | 1996-10-11 |
| JP3083477B2 true JP3083477B2 (en) | 2000-09-04 |
Family
ID=14213680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08098212A Expired - Lifetime JP3083477B2 (en) | 1996-04-19 | 1996-04-19 | Liquid crystal alignment film, method of manufacturing the same, and liquid crystal display device using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3083477B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1202919C (en) * | 1997-11-18 | 2005-05-25 | 松下电器产业株式会社 | Process for the production of monomolecular chemisorption film, and processes for the production of liquid crystal alignment films and liquid crystal displays by using the chemisorption film |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2558903B2 (en) * | 1989-03-09 | 1996-11-27 | 松下電器産業株式会社 | Liquid crystal alignment film, manufacturing method thereof, and liquid crystal display device using the same |
-
1996
- 1996-04-19 JP JP08098212A patent/JP3083477B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08262452A (en) | 1996-10-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0386782B1 (en) | Alignment film for liquid crystal and method for production thereof, as well as liquid crystal display device utilizing said alignment film and method for production thereof | |
| EP0476543B1 (en) | Liquid crystal alignment film and method of manufacturing the same | |
| JPH11505550A (en) | Liquid crystal composition and its alignment layer | |
| JP3142739B2 (en) | Liquid crystal display device and manufacturing method thereof | |
| JP2698717B2 (en) | Liquid crystal alignment film, method of manufacturing the same, liquid crystal display device and method of manufacturing the same | |
| JP2001281669A (en) | Liquid crystal alignment layer, its manufacturing method and liquid crystal display device and its manufacturing method | |
| JP2000515923A (en) | Liquid crystal composition and alignment layer | |
| EP0601895B1 (en) | Method for forming an orientation film | |
| WO1998054617A1 (en) | Liquid crystal alignment film, method of producing the same, liquid crystal display made by using the film, and method of producing the same | |
| JP2558903B2 (en) | Liquid crystal alignment film, manufacturing method thereof, and liquid crystal display device using the same | |
| JP3570703B2 (en) | Liquid crystal alignment film, method of manufacturing the same, and liquid crystal display device using the same | |
| JP3083477B2 (en) | Liquid crystal alignment film, method of manufacturing the same, and liquid crystal display device using the same | |
| JP2001108995A (en) | Liquid crystal display element and method of manufacture for the same | |
| JPH07114029A (en) | Liquid crystal orienting film, its production and liquid crystal display device | |
| JP3161645B2 (en) | Liquid crystal alignment film, method of manufacturing the same, and liquid crystal display device | |
| JPH06337405A (en) | Liquid crystal electro-optical device and manufacture thereof | |
| JP2001226674A (en) | Monostable ferroelectric liquid crystal display device | |
| JP3400358B2 (en) | Liquid crystal alignment film, method of manufacturing the same, liquid crystal display device using the same, and method of manufacturing the same | |
| JP3301960B2 (en) | Liquid crystal alignment film, method for manufacturing liquid crystal alignment film, liquid crystal display device, and method for manufacturing liquid crystal display device | |
| JP2955457B2 (en) | Method of forming alignment film | |
| JPH10339876A (en) | Liquid crystal alignment layer, manufacture therefor, liquid crystal display device using the same and manufacture therefor | |
| JPH11149077A (en) | Production of liquid crystal alignment layer and production of liquid crystal display device using the layer | |
| JPH10339877A (en) | Liquid crystal alignment layer, manufacture therefor, liquid crystal display device using the same and manufacture therefor | |
| JP3537709B2 (en) | Liquid crystal alignment film and liquid crystal display device using the same | |
| JP3497119B2 (en) | Organic thin film and manufacturing method thereof, liquid crystal alignment film and manufacturing method thereof, and liquid crystal display device and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080630 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090630 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100630 Year of fee payment: 10 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100630 Year of fee payment: 10 |