JPS6034095B2 - liquid crystal display device - Google Patents
liquid crystal display deviceInfo
- Publication number
- JPS6034095B2 JPS6034095B2 JP55043814A JP4381480A JPS6034095B2 JP S6034095 B2 JPS6034095 B2 JP S6034095B2 JP 55043814 A JP55043814 A JP 55043814A JP 4381480 A JP4381480 A JP 4381480A JP S6034095 B2 JPS6034095 B2 JP S6034095B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- display device
- film
- crystal display
- polymer
- 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
Links
Classifications
-
- 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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Spectroscopy & Molecular Physics (AREA)
Description
【発明の詳細な説明】
本発明は、電極基板（どちらか一方または両方の電極基
板）の内面に、偏光膜兼液晶分子配向制御膜となる被膜
を設けて成る液晶表示装置（ッィステッドネマティック
電界効果型液晶表示装置、ＤＡＰ型電界効果型液晶表示
装置、ゲストーホスト型電界効果型液晶表示装置等）に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a liquid crystal display device (a liquid crystal display device) in which a film that serves as a polarizing film and a liquid crystal molecule alignment control film is provided on the inner surface of an electrode substrate (one or both electrode substrates). The invention relates to a field effect liquid crystal display device, a DAP type field effect liquid crystal display device, a guest-host type field effect liquid crystal display device, etc.).
上記のような構成を有する従来の液晶表示装置としては
、ラビングを施した電極基板上に二色性色素であるメチ
レンブルーのメタノール溶液を塗布、乾燥することによ
って、二色性色素から成る偏光膜兼液晶分子配向制御膜
を電極基板上に形成する構成としたものが知られている
。A conventional liquid crystal display device having the above-mentioned configuration is manufactured by coating a methanol solution of methylene blue, a dichroic dye, on a rubbed electrode substrate and drying it, thereby forming a dichroic dye that doubles as a polarizing film. A structure in which a liquid crystal molecule alignment control film is formed on an electrode substrate is known.
しかし、該従来の液晶表示装置には、■ コントラスト
等の電気光学特性が良くない。■ 液晶分子の配向強度
が十分でない。■ 耐電圧、耐温・湿度などの信頼性が
十分でない。■ 偏光膜の溶出、再結晶化が起こる。な
どの欠点があった。本発明は、従来の液晶表示装置に於
ける上記欠点を除去することを目的としてなされたもの
であり、二色性色素と、極性を有する高分子の前駆物質
とを有機溶媒中で混合した混合溶液を、ラビング処理が
施された電極基板上に塗布し、乾燥することにより、電
極基板の内面に、偏光膜兼液晶分子配向制御膜となる被
膜を形成する構成としたことを特徴とする液晶表示装置
を提供するものである。However, the conventional liquid crystal display device has poor electro-optical characteristics such as (1) contrast. ■ The alignment strength of liquid crystal molecules is not sufficient. ■ Reliability in terms of voltage resistance, temperature/humidity resistance, etc. is not sufficient. ■ Elution and recrystallization of the polarizing film occur. There were drawbacks such as. The present invention was made with the aim of eliminating the above-mentioned drawbacks in conventional liquid crystal display devices, and uses a mixture of a dichroic dye and a polar polymer precursor in an organic solvent. A liquid crystal characterized in that a solution is applied onto an electrode substrate that has been subjected to a rubbing treatment and dried to form a film that serves as a polarizing film and a liquid crystal molecule alignment control film on the inner surface of the electrode substrate. The present invention provides a display device.
なお、本明細書に於て二色性色素とは、下記の■，■，
■及び■の要件を満足するものである。In addition, in this specification, dichroic dyes include the following
This satisfies the requirements of (1) and (2).
■ 広い波長範囲にわたって強い吸収と大きな二色性を
示すもの。■ 分子内に大きな電気双極子能率をもつ構
造があり、そのため吸収帯を有するもの。■ Those that exhibit strong absorption and large dichroism over a wide wavelength range. ■ A substance that has a structure with a large electric dipole efficiency within its molecules, and therefore has an absorption band.
■ 分子が細長い形をしているもの。■ Molecules have an elongated shape.
■ 分子の長軸に平行な吸収軸を有するもの。■ Having an absorption axis parallel to the long axis of the molecule.
極性を有する高分子は、ラビングまたは斜め蒸着面上で
ラビング方向または斜め蒸着方向に沿って配列し、ＴＮ
ＦＥＭ液晶表示装置等を形成可能であることが報告され
ている。これは基板の極性と高分子の極性が相互作用し
て、高分子を配向成長させて、さらに高分子の配向場が
液晶分子をホモジニアス配向させると推測される。例え
ばポリィミド系高分子を配向膜とすれば、配向強度の高
い、信頼性の高いＴＮＦＥＭ液晶表示装置等を形成でき
ることは既に知られている。また、二色性色素分子が極
性を有する高分子中で配向成長するのは高分子の配向場
に起因する。図は、本発明に係る液晶表示装置の構成を
示す断面図である。The polar polymer is arranged along the rubbing direction or the oblique vapor deposition direction on the rubbing or oblique vapor deposition surface, and the TN
It has been reported that it is possible to form FEM liquid crystal display devices and the like. It is assumed that this is because the polarity of the substrate and the polarity of the polymer interact to cause the polymer to grow in an oriented manner, and furthermore, the orientation field of the polymer causes the liquid crystal molecules to be homogeneously oriented. For example, it is already known that if a polyimide polymer is used as an alignment film, it is possible to form a highly reliable TNFEM liquid crystal display device with high alignment strength. Furthermore, the orientational growth of dichroic dye molecules in polar polymers is due to the orientation field of the polymer. The figure is a sectional view showing the configuration of a liquid crystal display device according to the present invention.
図に於て、１はガラス基板、２は直接ラビング面、柔か
し、樋性膜のラビング面又は斜め蒸着面、３は電極、４
は二色性色素分子、５は極性を有する高分子、６は液晶
分子、７はシール樹脂である。In the figure, 1 is a glass substrate, 2 is a direct rubbing surface, a rubbing surface of a softening or gutter film, or an oblique vapor deposition surface, 3 is an electrode, and 4 is an electrode.
5 is a dichroic dye molecule, 5 is a polar polymer, 6 is a liquid crystal molecule, and 7 is a sealing resin.
本発明の液晶表示装置の偏光膜兼液晶分子配向制御膜を
形成する具体的方法としては以下に示すような方法があ
る。Specific methods for forming the polarizing film and liquid crystal molecule alignment control film of the liquid crystal display device of the present invention include the following methods.
二色性色素（ァゾ染料（コンゴーレッドなど）、ニトロ
染料（ナフトールィェロ−Ｓなど）、トリフェニルメタ
ン染料（マカラィトグーンなど）、アジン染料（メチレ
ンプルーなど）等）と、ポリイミド樹脂の前駆物質であ
るポリアミド酸とを適当な有機溶媒中で混合した混合溶
液を、既にラピング処理が施こされた基板上に塗布し、
次に乾燥する。It is a precursor of dichroic dyes (Azo dyes (Congo Red, etc.), nitro dyes (Naphtholiero-S, etc.), triphenylmethane dyes (Makaraito Goon, etc.), azine dyes (Methylene Blue, etc.), etc.) and polyimide resins. A mixed solution of polyamic acid and polyamic acid mixed in a suitable organic solvent is applied onto a substrate that has already been subjected to wrapping treatment,
Then dry.
こうしてガラス基板上には二色性色素を含有した極性を
有する高分子膜であるポリィミド樹脂膜が形成される。
又、上記処理によってポリィミド樹脂の分子はラビング
処理が施こされたガラス基板上で、ガラス基板の極性と
高分子の樋性との相互作用によってラビング方向に配向
成長する。即ち、高分子の分子配列がラビング方向に並
ぶので液晶分子の配向膜として機能する。又上記ポリィ
ミド樹脂の分子配向成長と共に、該ポリィミド樹脂の内
部に含有された二色性色素も同じ方向に配向成長する。
こうしてガラス基板上にラビング方向と同一方向の吸収
軸を持った偏光膜兼液晶分子配向制御膜が形成されるの
である。尚、上記説明ではガラス基板にラビング処理を
施こしたものの上に偏光膜兼液晶分子配向制御膜を形成
したが、ガラス基板上に無機絶縁膜又は有機絶縁膜を形
成しその絶縁膜表面にラビング処理を施こしたものの上
に、上記と同じ処理方法によって偏光膜兼液晶分子鯨向
制御膜を形成しても構わない。尚、上記極性を有する高
分子物質として上述したポリィミド樹脂以外に、ェポキ
シ樹脂、フェノール樹脂、アクリル樹脂、メラミン樹脂
、セルロース、ポリフツ化ビニリデン、ポリピニルアル
コール樹脂等が用い得る。In this way, a polyimide resin film, which is a polar polymer film containing a dichroic dye, is formed on the glass substrate.
Further, as a result of the above treatment, molecules of the polyimide resin grow oriented in the rubbing direction on the glass substrate subjected to the rubbing treatment due to the interaction between the polarity of the glass substrate and the groove properties of the polymer. That is, since the molecular alignment of the polymer is aligned in the rubbing direction, it functions as an alignment film for liquid crystal molecules. Further, as the polyimide resin grows in molecular orientation, the dichroic dye contained inside the polyimide resin also grows in orientation in the same direction.
In this way, a polarizing film and liquid crystal molecule alignment control film having an absorption axis in the same direction as the rubbing direction is formed on the glass substrate. In the above explanation, a polarizing film and a liquid crystal molecule alignment control film were formed on a glass substrate that had been subjected to a rubbing process. A polarizing film/liquid crystal molecule orientation control film may be formed on the processed material by the same processing method as described above. In addition to the above-mentioned polyimide resin, epoxy resin, phenol resin, acrylic resin, melamine resin, cellulose, polyvinylidene fluoride, polypinyl alcohol resin, etc. can be used as the polar polymer substance.
以上の本発明によれば、偏光膜兼液晶分子配向制御膜の
素材としてポリィミド樹脂等の極性を有する高分子物質
を用いるので液晶配向性を向上させることができ、その
耐電圧、耐温・湿度も充分にでき高信頼性を得ることが
できるものである。According to the present invention, since a polar polymer substance such as polyimide resin is used as the material of the polarizing film and liquid crystal molecule alignment control film, the liquid crystal alignment can be improved, and its voltage resistance, temperature and humidity resistance can be improved. It is also possible to achieve high reliability.
図は、本発明に係る液晶表示装置の構成を示す断面図で
ある。
符号の説明、１・・・・・・ガラス基板、２・・・・・
・直接ラビング面、柔かい極性膜のラビング面、又は斜
め蒸着面、３・…・・電極、４・・・・・・二色性色素
分子、５・・・・・・極性を有する高分子、６・・…・
液晶分子、７・・・…シール樹脂。The figure is a sectional view showing the configuration of a liquid crystal display device according to the present invention. Explanation of symbols, 1...Glass substrate, 2...
・Direct rubbing surface, rubbing surface of a soft polar film, or oblique vapor deposition surface, 3... Electrode, 4... Dichroic dye molecule, 5... Polymer having polarity, 6...
Liquid crystal molecules, 7... Seal resin.
Claims (1)
なる被膜を設けて成る液晶表示装置に於て、二色性色素
と、極性を有する高分子の前駆物質とを有機溶媒中で混
合した混合溶液を、ラビング処理が施された電極基板上
に塗布し、乾燥することにより、上記偏光膜兼液晶分子
配向制御膜となる被膜を形成して成ることを特徴とする
液晶表示装置。1. In a liquid crystal display device in which a film that serves as a polarizing film and a liquid crystal molecule alignment control film is provided on the inner surface of an electrode substrate, a dichroic dye and a polar polymer precursor are mixed in an organic solvent. A liquid crystal display device characterized in that the mixed solution is applied onto an electrode substrate that has been subjected to a rubbing treatment and dried to form a film that serves as the polarizing film and liquid crystal molecule alignment control film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55043814A JPS6034095B2 (en) | 1980-03-31 | 1980-03-31 | liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55043814A JPS6034095B2 (en) | 1980-03-31 | 1980-03-31 | liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56138715A JPS56138715A (en) | 1981-10-29 |
| JPS6034095B2 true JPS6034095B2 (en) | 1985-08-07 |
Family
ID=12674202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55043814A Expired JPS6034095B2 (en) | 1980-03-31 | 1980-03-31 | liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6034095B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0623941B1 (en) * | 1993-03-09 | 1997-08-06 | Hoechst Celanese Corporation | Polymer electrets with improved charge stability |
| CN102317844A (en) * | 2009-05-15 | 2012-01-11 | 夏普株式会社 | Liquid crystal display device |
-
1980
- 1980-03-31 JP JP55043814A patent/JPS6034095B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56138715A (en) | 1981-10-29 |
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