JPS60120324A - Plastic liquid crystal display element - Google Patents
Plastic liquid crystal display elementInfo
- Publication number
- JPS60120324A JPS60120324A JP22854283A JP22854283A JPS60120324A JP S60120324 A JPS60120324 A JP S60120324A JP 22854283 A JP22854283 A JP 22854283A JP 22854283 A JP22854283 A JP 22854283A JP S60120324 A JPS60120324 A JP S60120324A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- display element
- base plate
- uniaxially stretched
- 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.)
- Pending
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 29
- 239000004033 plastic Substances 0.000 title claims abstract description 20
- 229920003023 plastic Polymers 0.000 title claims abstract description 20
- 239000010409 thin film Substances 0.000 claims abstract description 10
- 229910003437 indium oxide Inorganic materials 0.000 claims abstract description 5
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 claims abstract description 5
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910001887 tin oxide Inorganic materials 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims description 16
- 239000010408 film Substances 0.000 claims description 15
- 239000011521 glass Substances 0.000 claims description 4
- -1 polyethylene terephthalate Polymers 0.000 claims 1
- 229920000139 polyethylene terephthalate Polymers 0.000 claims 1
- 239000005020 polyethylene terephthalate Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 229920006267 polyester film Polymers 0.000 abstract description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052737 gold Inorganic materials 0.000 abstract description 2
- 239000010931 gold Substances 0.000 abstract description 2
- 230000008033 biological extinction Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- AZWHFTKIBIQKCA-UHFFFAOYSA-N [Sn+2]=O.[O-2].[In+3] Chemical compound [Sn+2]=O.[O-2].[In+3] AZWHFTKIBIQKCA-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
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
- G02F1/133305—Flexible substrates, e.g. plastics, organic film
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Liquid Crystal (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、透明導電性プラスチ、クスを用いた液晶表示
素子に関し、更に詳しくは、−軸延伸プラスチフクスを
基数として用いた液晶表示素子に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid crystal display element using transparent conductive plastic or paper, and more particularly to a liquid crystal display element using -axis stretched plastic as a base.
従来より、液晶表示素子用！１ｉｊｉ板には、ガラス基
板の表面に透明導電層を設けたものが用いられている。Conventionally, for liquid crystal display elements! The 1iji board is a glass substrate with a transparent conductive layer on the surface.
しかるに液晶表示素子には益々軽量、薄型化のニーズが
強く、ガラス基板をプラスチックス基板特にフィルム基
板に置きかえる試みがなされている。その例としては二
軸延伸ポリエステルフィルムの消光角のばらつきが５度
以内の部分を用いるもの及び無配向のポリエーテルスル
ホンフィルムを用いるものがある。However, there is a strong need for liquid crystal display elements to be lighter and thinner, and attempts are being made to replace the glass substrate with a plastic substrate, particularly a film substrate. Examples include those using a biaxially stretched polyester film in which the extinction angle varies within 5 degrees, and those using a non-oriented polyether sulfone film.
本発明者はさぎに一軸延伸プラスチソクスがこの様な用
途に利用出来ることを見出した。−軸延伸プラスチック
スは二軸延伸のものの如き消光角のばらつきが少く液晶
表示素子として良好であるが、電極の性能にばらつきが
あることが判って来た。The present inventor has discovered that uniaxially oriented plastics can be used for such purposes. - Although axially oriented plastics have less variation in extinction angles than biaxially oriented plastics and are suitable for use as liquid crystal display elements, it has been found that there are variations in electrode performance.
本発明者らはこのような点を改良するためにその原因を
追求の結果延伸方向と配向処理の方向との関係が重要な
因子であることを見出し、本発明に至った。In order to improve these points, the present inventors investigated the cause thereof and found that the relationship between the direction of stretching and the direction of orientation treatment is an important factor, leading to the present invention.
すなわち、本発明は一対の平行電極板とその間に封止さ
れた液晶物質とを主構成要素とする液晶表示素子に於い
てｔｉ板が一軸延伸プラスチックス基板とその上に形成
された透明電極とからなり且基板の延伸方向と直角方向
に配向処理されたことに特徴がある。That is, the present invention provides a liquid crystal display element whose main components are a pair of parallel electrode plates and a liquid crystal material sealed between them, in which a Ti plate is connected to a uniaxially stretched plastic substrate and a transparent electrode formed thereon. It is characterized by being oriented in a direction perpendicular to the stretching direction of the substrate.
本発明で基板の延伸方向と直角方向に配向膜ピングする
方法であり、具体的には綿布等を用いて膜上を２０〜２
００１／ｄ、好ましくは、１００ ｙ ／ ｄの静圧下
にラビングすることによって水平配向処理される。ラビ
ングによって透明電極は一般的に抵抗が上昇するがＭＤ
延伸プラスチックヌをＭＤ力方向ラビングした場合は３
−
ＴＤ力方向ラビングした場合より上昇率が４倍以上大き
く、ＴＤ延伸プラスチックスをＴＤ及びＭ、Ｄ方向にラ
ビングした場合の両者の関係も同様である。The present invention is a method of pinning the alignment film in the direction perpendicular to the stretching direction of the substrate, and specifically, using cotton cloth etc.
001/d, preferably 100 y/d, by rubbing under static pressure. Rubbing generally increases the resistance of transparent electrodes, but MD
3 when the stretched plastic material is rubbed in the MD force direction.
- The rate of increase is more than 4 times greater than when rubbed in the TD force direction, and the relationship between the two is also the same when TD stretched plastics are rubbed in the TD, M, and D directions.
本発明で基板に使用する一軸延伸プラスチソクスとして
は、ポリエステルを一軸延伸したものが好適であってＭ
Ｄ、Ｔ ’Ｉ）方向のどちらか一方向に延伸したもので
ある。The uniaxially stretched plastics used for the substrate in the present invention is preferably uniaxially stretched polyester.
D, T'I) direction.
一軸延伸ポリエステルフイルムの厚みとしては、５０μ
〜５００μｍの範囲が好ましい。特をこ電極間隔を一定
に保ち、しかも薄型化可能で、且つ透明導電性フィルム
の製造上等の見地から、７５〜２００Ｐｍの範囲が好ま
しい。The thickness of the uniaxially stretched polyester film is 50μ
A range of ~500 μm is preferred. In particular, a range of 75 to 200 Pm is preferable from the viewpoint of keeping the electrode spacing constant, making it thinner, and manufacturing a transparent conductive film.
該基板上に設ける透明電極は酸化スズを少量ドーグした
酸化インジウム薄膜、金薄膜が好適であり、特に酸化ス
ズを少量ドープした酸化インジウム薄膜が透明性の点で
好ましい。基板上ｔここれら導電性薄膜を設ける方法と
しては、真空蒸着法、スパッタリング法、イオンブレー
ティング法等をあげることが出来る。The transparent electrode provided on the substrate is preferably an indium oxide thin film doped with a small amount of tin oxide or a gold thin film, and an indium oxide thin film doped with a small amount of tin oxide is particularly preferable from the viewpoint of transparency. Examples of the method for providing the conductive thin film on the substrate include vacuum evaporation, sputtering, and ion blasting.
この様にして全面的に導電性薄膜を設けたものから表示
電極等必要部分を残し他はエソチン゛グ等で除去し電極
板が形成される。液晶表示素子の電極板としては配向処
理が必要であるが配向処理には２つの方法がある。一つ
は上記電極板をそのまま本発明の方向にラビングする方
法、もう一つは上記電極板に薄く配向用被膜を施し、そ
の膜面なラビングする方法である。本発明の配向処理は
両者を含むものであるが、本発明によれば必ずしも配向
用被膜を施さすとも導電性薄膜をそれほど劣化せずに溝
をつけることが出来るので、工程を簡略化し、しかも安
定した特性を併せ得られる。配向膜を設けその上に方位
溝を施せば、更に安定なプラスチック液晶表示素子が得
られる。From the conductive thin film provided over the entire surface in this way, an electrode plate is formed by removing necessary parts such as display electrodes and the like by etching or the like. Alignment treatment is required for electrode plates of liquid crystal display elements, and there are two methods for alignment treatment. One method is to rub the electrode plate as it is in the direction of the present invention, and the other method is to apply a thin alignment film to the electrode plate and rub the film surface. Although the orientation treatment of the present invention includes both, according to the present invention, grooves can be formed without much deterioration of the conductive thin film without necessarily applying an orientation film, which simplifies the process and provides stable processing. You can obtain both characteristics. An even more stable plastic liquid crystal display element can be obtained by providing an alignment film and forming azimuth grooves thereon.
本発明における透明導電性薄膜は通常可視光（５５０ｎ
ｍ）の透過率が少くとも７５％以上あり且つ表面抵抗が
ＩＯＫΩ１０以下のものである。好ましくは該透過率が
８０％以上あり、表面抵抗が３０θ〜４００Ω／口のも
のである。The transparent conductive thin film in the present invention is normally visible light (550n)
m) has a transmittance of at least 75% and a surface resistance of IOKΩ10 or less. Preferably, the transmittance is 80% or more and the surface resistance is 30θ to 400Ω/mouth.
本発明の液晶表示素子は、透明導電膜を劣化させない方
法であり、しかも一度に配向処理が出来るので、大量生
産にすぐれた効果を示す。The liquid crystal display element of the present invention is a method that does not deteriorate the transparent conductive film, and since the alignment treatment can be performed at one time, it exhibits an excellent effect on mass production.
また該液晶表示体は、素子の厚さをガラス基板より薄く
できるので、液晶表示体として軽量、薄型化、更に曲面
化という目的を十分に満足することができる。In addition, since the thickness of the element of the liquid crystal display can be made thinner than that of a glass substrate, it is possible to fully satisfy the objectives of making the liquid crystal display lighter, thinner, and curved.
なお、本発明において液晶としては単独液晶、混合液晶
、二色性色素を溶解させたゲスト・ホスト用液晶等を適
宜選択して使用するものである。In the present invention, as the liquid crystal, a single liquid crystal, a mixed liquid crystal, a liquid crystal for guest/host in which a dichroic dye is dissolved, etc. are appropriately selected and used.
次に本発明の実施例について述べる。Next, embodiments of the present invention will be described.
実施例 １
１軸延伸ポリエステ）ｖ （Ｔ Ｄ延伸）フィルムに透
明導電性膜（酸化インジウム−酸化スズ合金）を施した
後、エツチングにより８の字形状の表示電極パターンを
形成した。延伸方向と直交する様、すなわち、フィルム
の長手方向にラビングし配向処理とした。２枚の基板の
こすり方向が平行となるように貼合して表示素子を作成
した。この表示素子の液晶表示能力を観察したところ５
００時間経過後であっても充分な能力があることが判明
した。Example 1 A transparent conductive film (indium oxide-tin oxide alloy) was applied to a uniaxially stretched polyester (TD stretched) film, and then a figure-eight display electrode pattern was formed by etching. The orientation treatment was performed by rubbing in a direction perpendicular to the stretching direction, that is, in the longitudinal direction of the film. A display element was created by bonding two substrates together so that the rubbing directions were parallel. When we observed the liquid crystal display ability of this display element, it was found that 5
It was found that there was sufficient performance even after 00 hours had elapsed.
実施例 ２
１軸延伸ポリエステルフイルム（ＭＤ延伸）よって表示
素子を作成した。この表示素子の液晶表示能力は、５０
０時間経過後であっても充分な能力があることが判明し
た。Example 2 A display element was created from a uniaxially stretched polyester film (MD stretched). The liquid crystal display capacity of this display element is 50
It was found that there was sufficient performance even after 0 hours had elapsed.
比較例 １
１軸延伸ホリエステルフイルム（ＴＤ延伸）に実施例１
と同一の透明導電膜を施した後、８の字形状の電極パタ
ーンを形成した。延伸方向と平行にラビングし配向処理
した。２枚の基板のこすり方向が平行となるように貼合
して表示素子を作成した。この表示素子の液晶表示能力
を観察したところ配向の均一性が全く失われている部分
があり液晶表示が行えないことが判明した。Comparative Example 1 Example 1 applied to uniaxially stretched polyester film (TD stretched)
After applying the same transparent conductive film as above, a figure-eight electrode pattern was formed. Orientation treatment was performed by rubbing parallel to the stretching direction. A display element was created by bonding two substrates together so that the rubbing directions were parallel. When the liquid crystal display ability of this display element was observed, it was found that there were parts where alignment uniformity was completely lost, and liquid crystal display could not be performed.
Claims (2)
質とを主構成要素とする液晶表示素子に於いて、電極板
が一軸延伸グラスチソクス基板とその上に形成された透
明電極とよりなり且基板の延伸方向と直角方向に配向処
理されたことを特徴とするプラスチックス液晶表示素子(1) In a liquid crystal display element whose main components are a pair of parallel electrode plates and a liquid crystal material sealed between them, the electrode plates are composed of a uniaxially stretched glass tysox substrate and a transparent electrode formed on it. A plastic liquid crystal display element characterized by being subjected to alignment treatment in a direction perpendicular to the stretching direction of the substrate.
ートフィルムからなる特許請求の範囲第１項記載のプラ
スチックス液晶表示素子＋３） ｗＥ極部分が酸化スズ
を含有する酸化インジウムの蒸着薄膜である特許請求の
範囲第１及び２項記載のプラスチックス液晶表示素子（
４）！極板がその上に配向処理膜を設けである特許請求
の範囲第１．２及び３項記載のプラスチックス液晶表示
素子(2) A plastics liquid crystal display element according to claim 1, in which the plastic substrate is a polyethylene terephthalate film.+3) Claim 1, in which the wE electrode portion is a vapor-deposited thin film of indium oxide containing tin oxide. and the plastic liquid crystal display element described in item 2 (
4)! The plastic liquid crystal display element according to claims 1.2 and 3, wherein the electrode plate has an alignment treatment film provided thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22854283A JPS60120324A (en) | 1983-12-05 | 1983-12-05 | Plastic liquid crystal display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22854283A JPS60120324A (en) | 1983-12-05 | 1983-12-05 | Plastic liquid crystal display element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60120324A true JPS60120324A (en) | 1985-06-27 |
Family
ID=16878019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22854283A Pending JPS60120324A (en) | 1983-12-05 | 1983-12-05 | Plastic liquid crystal display element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60120324A (en) |
-
1983
- 1983-12-05 JP JP22854283A patent/JPS60120324A/en active Pending
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