JP2535142B2 - Liquid crystal display device manufacturing method - Google Patents
Liquid crystal display device manufacturing methodInfo
- Publication number
- JP2535142B2 JP2535142B2 JP60155837A JP15583785A JP2535142B2 JP 2535142 B2 JP2535142 B2 JP 2535142B2 JP 60155837 A JP60155837 A JP 60155837A JP 15583785 A JP15583785 A JP 15583785A JP 2535142 B2 JP2535142 B2 JP 2535142B2
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- Prior art keywords
- liquid crystal
- space
- substrates
- substrate
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Description
【発明の詳細な説明】 「発明の利用分野」 この発明は、液晶表示装置の作製方法に関するもので
あって、スメクチック液晶（以下Sm液晶または液晶とい
う）特に例えば強誘電性液晶（以下FLCという）を用い
た表示パネルを設けることにより、マイクロコンピュー
タ、ワードプロセッサまたはテレビ等の表示部の薄膜化
を図る液晶表示装置の作製方法に関するものである。Description: FIELD OF THE INVENTION The present invention relates to a method for manufacturing a liquid crystal display device, and more particularly to a smectic liquid crystal (hereinafter referred to as Sm liquid crystal or liquid crystal), for example, a ferroelectric liquid crystal (hereinafter referred to as FLC). The present invention relates to a method for manufacturing a liquid crystal display device in which a display panel such as a microcomputer, a word processor, or a television is provided with a thinner display portion by providing a display panel using the same.
「従来の技術」 固体表示パネルは各絵素を独立に制御する方式が大面
積用として有効である。このようなパネルとして、従来
は、二周波液晶例えばツウィスティック・ネマチック液
晶（以下TN液晶という）を用い、横方向400素子また縦
方向200素子とするA4判サイズの単純マトリックス構成
にマルチプレキシング駆動方式を用いた表示装置が知ら
れている。[Prior Art] In a solid-state display panel, a method of controlling each picture element independently is effective for a large area. Conventionally, such a panel uses a dual frequency liquid crystal such as a twisted nematic liquid crystal (hereinafter referred to as TN liquid crystal) and employs a multiplexing drive system in an A4 size simple matrix configuration with 400 elements in the horizontal direction and 200 elements in the vertical direction. 2. Description of the Related Art There is known a display device using the same.
しかし、かかるTN液晶を作製せんとした場合、このTN
液晶の粘度が低いため、一対のガラス基板を５〜10μの
間隙をあけて対抗せしめ、この一対のガラス基板の周辺
部に封止用シール剤をスペーサを混合して塗布し、お互
いを密着させる。この時周辺のシール部の一部の封止を
せず、開穴を残存して設けておく。この後この周辺が封
止された一対の基板を真空容器内に保持し、全体を真空
引きする。さらに、この後この開穴部分をTN液晶溶液中
に浸し、この真空容器内を大気圧にすることにより、毛
細管現象を利用して一対の基板間の５〜10μの間の空隙
に液晶を充填せんとするものであった。However, if such a TN liquid crystal is manufactured,
Due to the low viscosity of the liquid crystal, a pair of glass substrates are made to oppose each other with a gap of 5 to 10 μm, and a sealing sealant is mixed and applied to the peripheral portion of the pair of glass substrates to bring them into close contact with each other. . At this time, a part of the peripheral seal portion is not sealed, and the opening is left and provided. Thereafter, the pair of substrates whose periphery is sealed is held in a vacuum container, and the whole is evacuated. Then, the hole is immersed in a TN liquid crystal solution, and the inside of the vacuum vessel is brought to atmospheric pressure to fill the gap between 5 and 10μ between the pair of substrates with the liquid crystal by utilizing the capillary phenomenon. It was something I wanted to do.
「発明が解決しようとする問題点」 しかしかかる方法は、TN液晶の如き室温で低粘度の液
晶を基板間に充填する場合には優れている。"Problems to be Solved by the Invention" However, such a method is excellent when a liquid crystal having a low viscosity at room temperature such as a TN liquid crystal is filled between substrates.
しかし、 （１）粘度の高いスメクチック液晶例えばSmC*層を用い
るFLCに対してはきわめて作業がしづらい。However, (1) it is extremely difficult to work on a smectic liquid crystal having a high viscosity, for example, an FLC using an SmC * layer.
（２）セルの電極間の間隙を４μ以下好ましくは0.5〜
３μの狭い間隙を用いることを前提とするFLCを用いる
場合、充填にきわめて時間がかかってしまう。(2) Make the gap between the electrodes of the cell 4 μm or less, preferably 0.5 to
When the FLC is used on the assumption that a narrow gap of 3 μm is used, it takes a very long time to fill.
（３）FLCを大面積例えばA4版に対し充填せんとする場
合、８〜10時間もの長時間高温例えば120℃で充填作業
を必要とする。そのため、周辺部の封止が劣化しやす
い。またこの封止材料が不純物として液晶内に混入しや
すい。(3) When the FLC is to be filled into a large area, for example, an A4 size plate, a filling operation at a high temperature, for example, 120 ° C. for a long time of 8 to 10 hours is required. Therefore, the sealing of the peripheral portion is apt to deteriorate. Further, this sealing material is likely to be mixed into the liquid crystal as an impurity.
（４）液晶の充填に伴いセルギャップを決めているスペ
ーサ（通称貝柱）が一方に偏りやすい。(4) The spacers (commonly called scallops) which determine the cell gap with the filling of the liquid crystal tend to be biased toward one side.
（５）充填の際有効に用いられない液晶材料が全体の90
％近くになってしまい無駄が多い。(5) 90% of the liquid crystal material that is not used effectively during filling
There is a lot of waste because it is close to%.
等の多くの欠点を有する。And so on.
本発明はかかる問題点を解くものである。 The present invention solves such a problem.
「問題を解決するための手段」 かかる問題を解決するため、本発明は、一対の基板に
対して液晶を充填する前に一対の基板の周辺部をシール
するのではなく、一対の基板の被充填面上に液晶を設け
た後、この液晶上に他方の基板の被充填面を密接せし
め、さらに一対の基板を所定の相互位置に配設せしめる
ものである。さらにこの工程と同時工程として、周辺部
特に正方形または長方形の基板のコーナ部に封止用シー
ルを行わしめるいわゆるラミネート（薄層にする、薄層
にのばすの意）方式を用いることを基本とする。[Means for Solving the Problem] In order to solve such a problem, the present invention does not seal the peripheral portion of the pair of substrates before filling the pair of substrates with the liquid crystal, but covers the pair of substrates. After the liquid crystal is provided on the filling surface, the filling surface of the other substrate is brought into close contact with the liquid crystal, and the pair of substrates are arranged at predetermined mutual positions. Further, at the same time as this step, a so-called laminating (making thin layer or extending to thin layer) system for sealing the peripheral portion, especially the corner portion of the square or rectangular substrate, is basically used. .
加えて本発明においては、液晶材料としてスメクチッ
ク液晶、特に好ましくはスメクチックＣ相（SmC*）を呈
する強誘電性液晶を用いる。即ちセルの間隔を４μｍま
たはそれ以下の一般には0.5〜３μｍとすることにより
双安定状態を得ることができる。In addition, in the present invention, a smectic liquid crystal, particularly preferably a ferroelectric liquid crystal exhibiting a smectic C phase (SmC * ) is used as a liquid crystal material. That is, a bistable state can be obtained by setting the cell interval to 4 μm or less, generally 0.5 to 3 μm.
即ち、かかる一方の基板の電極上の被充填面上の一点
または複点（等方性）液晶を滴下、散布またはコートす
る。さらに一方または他方の基板のコーナ部に封止用樹
脂を微量滴下する。この後、他方の基板をこの上に配設
する。That is, one-point or multi-point (isotropic) liquid crystal on the surface to be filled on the electrode of one of the substrates is dropped, sprayed or coated. Furthermore, a small amount of sealing resin is dropped on the corner portion of one or the other substrate. After this, the other substrate is placed on this.
さらにこれらを真空引きをし、その前後において加熱
し、その一対の基板を互いに加圧して、それぞれの基板
の内側に設けられた被充填面を４μ以下の間隙にして互
いにFLCと密接せしめ、加えて周辺部の少なくとも一部
を同時に封止せしめる。Further, these are evacuated and heated before and after that, the pair of substrates are pressed against each other, and the filled surfaces provided inside the respective substrates are made into a gap of 4 μ or less so as to be in close contact with the FLC. And at least a part of the peripheral portion is simultaneously sealed.
さらにこの薄いFLCが充填されたラミネートされた基
板の温度を降下させ、SmAを得、さらに双安定なSmC*を
得る。するとらせん構造をとくことができる。この後、
常温に保存した後、周辺部の辺の部分に対しシール用の
プラスチック封止剤による封止を行う。Furthermore, the temperature of the laminated substrate filled with this thin FLC is lowered to obtain SmA, and further obtain bistable SmC * . Then the spiral structure can be broken. After this,
After storage at room temperature, the peripheral side portions are sealed with a plastic sealing agent for sealing.
かかる本発明方法においてはこのコーナ部でお互いの
基板の接触面積を多くでき、互いに固く固着させること
ができる。In such a method of the present invention, it is possible to increase the contact area of the substrates with each other at the corner portions and firmly fix them to each other.
また本発明でも残された問題点の使用温度範囲は、現
在複数の異なったFLCを組合わせて（ブレンドして）０
〜50℃において使用が可能となっている。このため実用
上はそれほど問題とならず、また階調に関してはカラー
も８色までとするならば階調が不要であり、マイクロコ
ンピュータ等のディスプレイとしては十分実用が可能で
あることが判明した。The operating temperature range of the problem remaining in the present invention is 0 by combining (blending) a plurality of different FLCs at present.
It can be used at ~ 50 ° C. For this reason, there is no problem in practical use, and it is found that if the number of colors is up to eight, no gradation is necessary, and the display is sufficiently practical as a display such as a microcomputer.
「作用」 かくすることにより、 （１）セルはスペーサを散布しその大きさにより最小の
間隙を決定するため、形成されるFLCの間隙にばらつき
がない。"Operation" By doing so, (1) The cells scatter the spacers and determine the minimum gap according to the size thereof, so that the gap of the formed FLC does not vary.
（２）４μ以下の間隙（セル厚）の薄いセルであっても
大面積（A4版相当）であっても短時間でラミネート作業
を行うことができる。(2) Laminating work can be performed in a short time even in a cell having a small gap (cell thickness) of 4 μ or less or a large area (equivalent to A4 size).
（３）基板上に設けたFLCを100％有効利用することがで
きる。(3) 100% of the FLC provided on the substrate can be used effectively.
（４）粘度の高いFLCを用いても、そのラミネートおよ
び封止の作業に１時間以上を必要としない。(4) Even if FLC having a high viscosity is used, the lamination and sealing operations do not require more than one hour.
（５）一方の基板側にはアクティブ素子とそれに連結し
た電極を設けても、まったくアクティブ素子を用いない
パッシブ構造と同一工程でFLCのラミネートができる。(5) Even if an active element and an electrode connected to the active element are provided on one substrate side, FLC can be laminated in the same step as a passive structure using no active element at all.
さらに、これらの特徴により本発明の液晶のラミネー
ト（２つの基板の間隙を少しづつ狭くし、その間に液晶
を薄層化して介在させることを示す）方法を用い、加え
て非線型素子（NE）と強誘電性液晶（FLC）とを直列に
して各画素を構成せしめる場合、A4版またはそれ以上の
大面積のマトリックス化にそれぞれの画素間のクロスト
ークを除去し駆動させることが初めて成就できた。Further, by using these characteristics, the method of laminating the liquid crystal of the present invention (showing that the gap between the two substrates is gradually narrowed and the liquid crystal is thinned and interposed therebetween) is used, and in addition, the nonlinear element (NE) is used. For the first time, when each pixel is composed of a series of liquid crystal and ferroelectric liquid crystal (FLC), it was possible to achieve the A4 size or larger matrix by removing crosstalk between each pixel and driving it. .
以下に実施例に従って本発明を説明する。 The present invention will be described below with reference to examples.
「実施例１」 第１図は本発明の液晶表示装置の作製工程を示す。Example 1 FIG. 1 shows a process for manufacturing a liquid crystal display device of the present invention.
第１図（Ａ）は２つの基板（１），（１′）を有す
る。この相対向する面（８），（８′）側にはそれぞれ
電極を有している。またカラー表示をするには、その一
方の側の電極と基板との間または電極と充填される液晶
との間にカラーフィルタが設けられている。さらにこの
電極の上面には公知の非対称配向処理がなされている。FIG. 1A has two substrates (1) and (1 '). Each of the opposing surfaces (8) and (8 ') has an electrode. For color display, a color filter is provided between the electrode on one side thereof and the substrate or between the electrode and the filled liquid crystal. Further, a known asymmetric alignment treatment is performed on the upper surface of this electrode.
これらの図面では、簡単にするため図示することを省
略して単に基板として表記している。しかし一対の基板
の相対向する側にこれらの電極、フィルタ、配向処理、
ブラックマトリックス化するシァドウ処理（マスク）の
形成、アクティブ素子の作製等を必要に応じて行うこと
は有効である。In these drawings, for simplicity, illustration is omitted and is simply represented as a substrate. However, these electrodes, filters, alignment treatment,
It is effective to form a shadow processing (mask) for forming a black matrix, manufacture active elements, and the like as necessary.
また、基板は一般にはガラス基板例えばコーニング70
59を使用する。しかし基板の一方または双方に可曲性の
基板を用いることは有効である。そしてその可曲性基板
として、化学強度がなされた0.3〜0.6mm厚のガラス基
板、またはポリイミド,PAN,PET等の透光性耐熱性有機樹
脂基板を用いることは有効である。The substrate is generally a glass substrate, for example, Corning 70.
Use 59. However, it is effective to use a bendable substrate for one or both of the substrates. As the flexible substrate, it is effective to use a glass substrate having a chemical strength of 0.3 to 0.6 mm or a translucent heat-resistant organic resin substrate made of polyimide, PAN, PET or the like.
この基板上の電極上には配向処理層（非対称配向処理
層）が設けられ、その上面を被充填面とした。そしてこ
の面上に、FLC、例えばS8（オクチル・オキシ・ベンジ
リデン・アミノ・メチル・ブチル・ベンゾエイト）を設
けた。これ以外でも、BOBAMBC等のFLCまたは複数のブレ
ンドを施したFLCを充填し得る。例えばここではS8とB7
とのブレンドした液晶を用いた。An alignment treatment layer (asymmetric alignment treatment layer) was provided on the electrode on this substrate, and the upper surface was used as a filling surface. Then, FLC, for example, S8 (octyl oxybenzylidene amino methyl methyl butyl benzoate) was provided on this surface. Alternatively, an FLC such as BOBAMBC or a blended FLC may be filled. For example here S8 and B7
The liquid crystal blended with was used.
さらにこの一対の基板の一方の被充填面上に液晶
（２）を滴下させた。Further, the liquid crystal (2) was dripped on one filled surface of the pair of substrates.
さらに他方の被充填面を下側に配向させた複数の周辺
部特にコーナ部にエポキシ系の封止の樹脂（19），（1
9′）を微量に滴下した。これは熱硬化性樹脂を用い
た。Furthermore, the epoxy resin (19), (1
A small amount of 9 ') was dropped. This used a thermosetting resin.
かかる液晶が設けられた一対の基板を第１図（Ｂ）に
示すごとき真空容器（100）に封入した。この真空容器
（100）は容器側（10）に第１の空間を有し、蓋側（1
0′）に第２の空間（５）を有する。第１の空間（４）
内にはヒータ（３）が設けられている。このヒータ
（３）上に一方の基板（１）を配設し、この基板を室温
〜150℃内の所定の温度、例えば液晶の粘度が十分低く
なる70〜150℃例えば120℃に加熱制御させた。すると既
に基板（１）上の被充填面に設けられた液晶（３）が加
熱され被充填面に拡がる。この液晶を滴下して設ける前
または後に所定の間隔をおいて基板上にスペーサを配設
させた。このスペーサはまったく用いない方式をとって
もよい。A pair of substrates provided with the liquid crystal was sealed in a vacuum container (100) as shown in FIG. 1 (B). This vacuum container (100) has a first space on the container side (10) and has a first space on the lid side (1).
0 ') has a second space (5). First space (4)
A heater (3) is provided inside. One substrate (1) is disposed on the heater (3), and the substrate is heated and controlled to a predetermined temperature within a range from room temperature to 150 ° C., for example, 70 to 150 ° C., for example, 120 ° C., at which the viscosity of the liquid crystal becomes sufficiently low. Was. Then, the liquid crystal (3) already provided on the filling surface on the substrate (1) is heated and spreads on the filling surface. Before or after the liquid crystal was dropped, spacers were disposed on the substrate at a predetermined interval. This spacer may not be used at all.
さらにこの上方に対向する他方の基板（１′）を１〜
10mm離間してまたはかるくお互いを部分的に接せしめて
配置させた。Further, the other substrate (1 ') facing above is
They were placed 10 mm apart or lightly touching each other partially.
この後、この第２の空間（５）を有する蓋側容器（1
0′）をＯリングにより容器（10）側に合わせ込んだ。
この第２の空間の下側には、第１の空間と第２の空間と
がお互いに弾力性を有する層（以下簡単のためシリコン
ラバー（６）という）で遮蔽されている。そして第２の
空間と第１の空間の圧力において、第１の空間の圧力が
正圧の場合は下側を膨張し、逆の負圧の場合は上側に引
っ張られるようになっている。このラバーは少なくとも
150℃の温度に耐えることができる材料であれば、シリ
コンラバーにかぎらない。After this, the lid-side container (1 having this second space (5)
0 ′) was fitted to the container (10) by an O-ring.
Below the second space, the first space and the second space are shielded from each other by a layer having elasticity (hereinafter simply referred to as silicon rubber (6)). When the pressure in the second space and the first space is positive, the lower pressure is expanded when the pressure in the first space is positive, and is pulled upward when the pressure in the first space is negative. This rubber is at least
Any material that can withstand a temperature of 150 ° C. is not limited to silicon rubber.
これらをＯリングにより互いに合わせ込み、（11），
（11′）より同時に真空引きをした。即ち、この２つの
出口は、バルブ（12），（12′）を経て真空ポンプ（1
4）に連結されている。そしてこのバルブ（12），（1
2′）をともに開、バルブ（13），（13′）をともに閉
として、第１および第２の空間（４），（５）をともに
真空空間とした。These are joined together by an O-ring, and (11),
Vacuum was simultaneously drawn from (11 '). That is, these two outlets are connected to the vacuum pump (1) through valves (12) and (12 ').
It is linked to 4). And this valve (12), (1
2 ') was opened, valves (13) and (13') were both closed, and the first and second spaces (4) and (5) were both vacuum spaces.
さらに第１図（Ｃ）に示す如く、この上面に離間して
いる他方の基板を精密に配設した。Further, as shown in FIG. 1 (C), the other of the substrates separated from each other was precisely arranged on the upper surface.
すると液晶（３）は上下の被充填面に互いに充填され
る。加えてコーナ部の封止材（19），（19′）が加熱さ
れている基板側に接触し温度を上昇させる。そして引き
続き、他方の第２の空間（５）を真空状態より第１の空
間（４）に比べて正圧となるように徐々にバルブ（1
3′）より大気または窒素をリークし大気圧にさせた。Then, the liquid crystals (3) are filled in the upper and lower filling surfaces. In addition, the sealing materials (19) and (19 ') at the corners come into contact with the heated substrate side to raise the temperature. Then, successively, the valve (1) is gradually added so that the other second space (5) becomes more positive than the first space (4) in the vacuum state.
Atmosphere or nitrogen was leaked from 3 ') to atmospheric pressure.
すると第１図（Ｃ）に示す如く、シリコンラバー
（６）は下側に膨張し、対向する他方の基板（１′）を
一方の基板（１）の側に押しつける。そして大気圧にお
いては1kg/cm2の圧力を加えることができる。また窒素
によりさらに加圧する場合は１気圧以上の２〜5kg/cm2
の圧力とすることも可能である。Then, as shown in FIG. 1 (C), the silicon rubber (6) expands downward and presses the other substrate (1 ') facing the one substrate (1) side. At atmospheric pressure, a pressure of 1 kg / cm 2 can be applied. When the pressure is further increased by nitrogen, it is 2 to 5 kg / cm 2 of 1 atm or more.
Pressure.
かくして一対の基板の全表面に均一な圧力を加えるこ
とができ、この圧力により液晶は一点または複数点に点
状に設けられていたが、横方向に基板（１）の表面にそ
って広がり、ラミネートされる。Thus, a uniform pressure can be applied to the entire surfaces of the pair of substrates, and the liquid crystal is provided at one or a plurality of points by this pressure. However, the liquid crystal spreads laterally along the surface of the substrate (1). Laminated.
加えて封止材もそのコーナ部で広がり、１〜15mm□の
面積にてそれぞれの基板を互いに密接せしめた。In addition it spreads its corners even sealing material was allowed to mutually closely respective substrate at the area of 1 to 15 mm □.
この時一方の液晶または他方の封止材が互いに混合し
たり、また所定の位置以上に他方により広がらないよう
に、１〜３μの繊維よりなるバリア（18），（18′）を
配設しておくと有効である。またこのバリアはコーナ部
のみでなく周辺全領域にわたって設けてもよい。At this time, barriers (18) and (18 ′) made of fibers of 1 to 3 μm are provided so that one liquid crystal or the other sealing material does not mix with each other or spread over a predetermined position by the other. It is effective to keep it. Further, this barrier may be provided not only at the corner portion but also over the entire peripheral region.
さらにその一対の基板の電極側の間隙は４μ以下例え
ば２μの均一な厚さとすることができる。そしてこの厚
さはスペーサが２μの大きさのものを予め配設しておく
と２μとなり、１μのスペーサを散布させておく時には
１μとすることができる。Further, the gap between the pair of substrates on the electrode side can have a uniform thickness of 4 μm or less, for example, 2 μm. This thickness becomes 2 μ when a spacer having a size of 2 μ is provided in advance, and can be 1 μ when a 1 μ spacer is dispersed.
もちろんスペーサをまったく用いず、この圧力と加熱
している温度とのみを精密に制御して所定の厚さにラミ
ネートさせることも可能である。Of course, it is also possible to precisely control only this pressure and the heating temperature without using any spacers, and to laminate the laminate to a predetermined thickness.
その結果、液晶の余分のものは周辺部に移動する。し
かしこの外周辺をシリコンラバーが覆っているため、ま
たはバリア（18,（18′）が堤防の如くにブロッキング
しているため、これが基板の一部の外側周辺より外側に
液晶があふれることを実質的に防ぐことができる。また
すべての外周辺より液晶があふれたり、また所望の領域
全体を覆うことなく足りなくなったりすることは、初期
の液晶の供給量を精密にすることにより防ぐことができ
る。As a result, the excess liquid crystal moves to the periphery. However, because the silicone rubber covers the outer periphery or the barriers (18, (18 ') block like a bank, this effectively prevents the liquid crystal from spilling over the outer periphery of a part of the substrate. It is also possible to prevent the liquid crystal from overflowing from all the outer periphery or being insufficient without covering the entire desired area by making the initial liquid crystal supply amount precise. .
２つの基板のおたがいのＸ方向Ｙ方向の重ね合わせは
密着させる基板（１），（１′）及び液晶（３）が加熱
されている低粘度状態の時に移動させ再配設させること
ができる。The superposition of the two substrates in the X and Y directions can be moved and rearranged when the substrates (1), (1 ') and the liquid crystal (3) to be brought into close contact with each other are in a low viscosity state where they are heated. .
この後、第１図（Ｃ）でヒータを徐々に室温に降下し
た。さらに第１の区間（５）をも大気圧とし真空容器
（100）の蓋（10′）を取り外した。一対の基板間に液
晶をラミネートさせたセルを容器より取り出し第１図
（Ｄ）を作る。Thereafter, the heater was gradually lowered to room temperature in FIG. 1 (C). Further, the first section (5) was also set to atmospheric pressure, and the lid (10 ') of the vacuum container (100) was removed. A cell in which a liquid crystal is laminated between a pair of substrates is taken out of the container, and FIG. 1 (D) is made.
この図はコーナ部を示し、封止材が２つの基板の間に
も介在し、それぞれを密着させている。This figure shows the corner portion, and the sealing material is also interposed between the two substrates to bring them into close contact with each other.
かくして第１図（Ｄ）に示す如く、２つの対向する基
板（１），（１′）は液晶（３）を互いに実質的に重ね
合わせた状態にする。Thus, as shown in FIG. 1 (D), the two opposing substrates (1) and (1 ') have the liquid crystal (3) substantially superimposed on each other.
第１図（Ｅ）は周辺部の辺の部分にその後の工程にお
いて外側より封止用シール剤（９）（一般にはプラスチ
ック材料）を塗布し、お互いの基板を固着させる。In FIG. 1 (E), a sealing agent (9) (generally a plastic material) is applied from the outside to the peripheral side portions in the subsequent step to fix the substrates to each other.
もちろん第１図（Ａ）において、封止材（19），（1
9′）は正方形または長方形の基板のコーナ部のみでは
なく辺となる部分に対しても同時に滴下し、外周辺のす
べてを液晶のラミネイトと同時に封止をさせてもよい。Of course, in FIG. 1 (A), the sealing materials (19), (1
9 ') may be dropped not only on the corner portions of the square or rectangular substrate but also on the side portions, and the entire outer periphery may be sealed at the same time as the liquid crystal laminate.
かくして、本発明のスメクチック液晶の如く、高い粘
度を有する液晶、特にFLCの基板間での充填ラミネート
方法を確立することができた。Thus, a method of filling and laminating a liquid crystal having a high viscosity, particularly FLC, between substrates, like the smectic liquid crystal of the present invention, could be established.
「効果」 かくすることにより、A4版（20cm×30cmの面積）１枚
で使用する液晶は0.2ccで十分であり、3000円/gと金よ
り高価な液晶をきわめて有効に用いることができる。"Effect" By doing so, 0.2cc is enough for one A4 size (20cm x 30cm area) liquid crystal, and liquid crystal more expensive than 3000 yen / g can be used very effectively.
１回の液晶の充填作業を約１時間の短時間で行うこと
ができる。One liquid crystal filling operation can be performed in a short time of about 1 hour.
大面積になっても、作業時間は長くならないという特
徴を有する。The feature is that the working time does not increase even if the area becomes large.
即ち、従来より公知のTN液晶の充填作業においては、
この液晶に応力が加わらないようにすることが主であ
る。そのため、周辺部のシール剤はおたがいの基板に外
部より加わり得る圧力が液晶それ自体に加わらないよう
互いの力を支えている。That is, in the filling operation of the conventionally known TN liquid crystal,
Mainly, no stress is applied to the liquid crystal. Therefore, the sealing agents in the peripheral portions support each other's force so that the pressure that can be applied from the outside to each substrate is not applied to the liquid crystal itself.
しかしスメクチック液晶では、この力が液晶それ自体
に加わってもその粘度が大きく、差し支えないことを本
発明人は見出した。そしてこの特性を利用することによ
り従来とはまったく異なる本発明の如き作製方法を可能
にすることができた。However, the present inventor has found that the smectic liquid crystal has a large viscosity even if this force is applied to the liquid crystal itself, which is not a problem. By utilizing this characteristic, a manufacturing method like the present invention, which is completely different from the conventional method, can be realized.
以上の本発明の液晶の充填方法において、被充填面を
構成する配向処理層を非対称配向処理とし、一方をラビ
ング処理をし、他方を非ラビング処理とする。この時、
本発明の如くラミネイトした後、この基板をラビングを
施した面にそって高温状態等で微動（１μ以上の１〜10
4μｍ）シフトさせ、ストレスを液晶に加え配向せしめ
ることは有効である。In the liquid crystal filling method of the present invention described above, the alignment treatment layer forming the filling surface is asymmetric alignment treatment, one is rubbing treatment, and the other is non-rubbing treatment. This time,
After lamination as in the present invention, this substrate is slightly moved along a rubbed surface in a high temperature state or the like (1 μm or more to 1 to 10 μm).
It is effective to shift by 4 μm) and apply stress to the liquid crystal to orient it.
以上に述べた本発明の液晶表示装置において、この基
板の一方または双方の基板の外側に偏光板を設け、反射
型とする場合は、その入射光側の電極を透光性とし、他
方を反射型電極とする。そしてFLCのチルト角を約45度
とすることにより、１枚のフィルタを入射光側の基板上
に配設して実施することができる。In the above-described liquid crystal display device of the present invention, when a polarizing plate is provided on the outside of one or both of the substrates to make it a reflection type, the electrode on the incident light side is transparent and the other is reflected. The mold electrode. By setting the tilt angle of the FLC to about 45 degrees, one filter can be provided on the substrate on the side of the incident light and can be implemented.
他方、２枚のフィルタを用いて透過型または反射型と
する場合、２枚の偏光板をそれぞれの基板の外側に配向
させ、FLCのチルト角を約22.5度とすることにより成就
させ得る。透光型においてはバックライトをEL（エレク
トロ・ルミネッセンス）蛍光灯または自然光により照射
し、透光する光の量を制御することによりディスプレイ
とすることができる。On the other hand, when two filters are used to form a transmission type or a reflection type, it can be achieved by orienting the two polarizing plates outside each substrate and setting the tilt angle of the FLC to about 22.5 degrees. In a light-transmitting type, a display can be formed by irradiating a backlight with an EL (electro-luminescence) fluorescent lamp or natural light and controlling the amount of transmitted light.
カラー化する場合は他方の対向基板側（人間の目で見
える側）の電極の上側または下側にカラーフィルタを設
ければよい。In the case of colorization, a color filter may be provided above or below the electrode on the other counter substrate side (the side visible to human eyes).
さらに本発明においては、基板上に非線型素子を配設
し、その上方に電極を設けたものを基板として取扱い、
アクティブ素子型とすることができる。かかる場合、こ
の非線型素子としてNIN型等の複合ダイオード構造を有
するSCLAD（空間電荷制限電流側アモルファス半導体装
置）、絶縁ゲイト型電界効果半導体装置を用いることが
可能である。Further, in the present invention, a non-linear element is provided on a substrate, and an electrode provided thereon is treated as a substrate,
It can be an active element type. In this case, it is possible to use an SCLAD (space charge limited current side amorphous semiconductor device) or an insulating gate type field effect semiconductor device having a composite diode structure of NIN type or the like as the non-linear element.
本発明の液晶表示装置において、ライトペンを用いた
フォトセンサをドット状に作ることにより表示とその読
み取りとを行うことができる。In the liquid crystal display device of the present invention, display and reading can be performed by forming a photo sensor using a light pen in a dot shape.
本発明の第１図の作製工程は100×100（カラーにおい
ては100×300）のマトリックス構成とした。In the manufacturing process of FIG. 1 of the present invention, a 100 × 100 (100 × 300 in color) matrix configuration was adopted.
しかしこのドット数は640×400（カラーの場合は1920
×400）,720×400その他の構成をも有し得る。However, this number of dots is 640 x 400 (1920 for color
× 400), 720 × 400 and other configurations.
【図面の簡単な説明】 第１図は本発明の液晶表示装置の作製方法を示す。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a method for manufacturing a liquid crystal display device of the present invention.
フロントページの続き (72)発明者 小柳 かおる 東京都世田谷区北烏山７丁目21番21号 株式会社半導体エネルギー研究所内 (72)発明者 今任 慎二 東京都世田谷区北烏山７丁目21番21号 株式会社半導体エネルギー研究所内 (72)発明者 山口 利治 東京都世田谷区北烏山７丁目21番21号 株式会社半導体エネルギー研究所内 (72)発明者 坂間 光範 東京都世田谷区北烏山７丁目21番21号 株式会社半導体エネルギー研究所内 (72)発明者 犬島 喬 東京都世田谷区北烏山７丁目21番21号 株式会社半導体エネルギー研究所内 合議体 審判長 中村 友之 審判官 川上 義行 審判官 吉野 公夫 (56)参考文献 特開 昭60−126624（ＪＰ，Ａ) 特開 昭59−57221（ＪＰ，Ａ) 特開 昭61−190313（ＪＰ，Ａ) 特開 昭60−111221（ＪＰ，Ａ)Front Page Continuation (72) Inventor Kaoru Koyanagi 7-21-21 Kitakarasuyama, Setagaya-ku, Tokyo Inside Semiconductor Energy Laboratory Co., Ltd. (72) Inventor Shinji Imoji 7-21-21 Kitakarasuyama, Setagaya-ku, Tokyo Shares Company Semiconductor Energy Laboratory (72) Inventor Toshiharu Yamaguchi 7-21-21 Kitakarasyama, Setagaya-ku, Tokyo Inside Semiconductor Energy Laboratory Co., Ltd. (72) Inventor Mitsunori Sakama 7-21-21 Kitakarasyama, Setagaya-ku, Tokyo Stocks Semiconductor Energy Laboratory Co., Ltd. (72) Inventor Takashi Inujima 7-21-21 Kitakarasuyama, Setagaya-ku, Tokyo Tokyo Semiconductor Energy Laboratory Co., Ltd. Judgment Chairman Tomoki Nakamura Judge Yoshiyuki Kawakami Judge Yoshino Yoshio (56) References Kai 60-126624 (JP, A) JP 59-57221 (JP, A) JP 61-190313 (JP, A) JP 60-111221 (JP, A)
Claims (3)
態にあり、しかもそれぞれの空間は弾力性を有する層で
遮蔽された状態で、第２の空間内に、電極を互いに有す
る一対の基板の被充填面を内側に対向させ、かつ前記基
板の被充填面間にスメクチック液晶を介在せしめ、また
前記被充填面間の周辺部の少なくとも一部に封止材を介
在せしめて配置する工程と、 前記第１の空間を真空状態から前記第２の空間に比べて
正圧にすることにより、前記弾力性を有する層により前
記基板を加圧せしめる工程により、 一対の基板間にスメクチック液晶を充填せしめると同時
に前記一対の基板間の周辺部の少なくとも一部を封止す
ること を特徴とする液晶表示装置の作製方法。1. A first space and a second space are both in a vacuum state, and each space is shielded by a layer having elasticity, and electrodes are placed in the second space. The filled surfaces of the pair of substrates are opposed to each other, the smectic liquid crystal is interposed between the filled surfaces of the substrates, and the sealing material is interposed at least at a part of the peripheral portion between the filled surfaces. Between the pair of substrates, the step of arranging and the step of pressurizing the substrate with the elastic layer by applying a positive pressure to the first space from the vacuum state as compared with the second space. A method for manufacturing a liquid crystal display device, comprising filling a smectic liquid crystal and sealing at least a part of a peripheral portion between the pair of substrates at the same time.
態にあり、しかもそれぞれの空間は弾力性を有する層で
遮蔽された状態で、第２の空間内に、一方の基板上にア
クティブ素子が設けられ、他方の基板上には電極が設け
られた一対の基板の被充填面を内側に対向させ、かつ前
記基板の被充填面間にスメクチック液晶を介在せしめ、
また前記被充填面間の周辺部の少なくとも一部に封止材
を介在せしめて配置する工程と、 前記第１の空間を真空状態から前記第２の空間に比べて
正圧にすることにより、前記弾力性を有する層により前
記基板を加圧せしめる工程により、 一対の基板間にスメクチック液晶を充填せしめると同時
に前記一対の基板間の周辺部の少なくとも一部を封止す
ること を特徴とする液晶表示装置の作製方法。2. The first space and the second space are both in a vacuum state, and each space is shielded by an elastic layer, and one substrate is placed in the second space. An active element is provided on the other substrate, the filled surfaces of a pair of substrates having electrodes provided on the other substrate are opposed to the inside, and a smectic liquid crystal is interposed between the filled surfaces of the substrates,
In addition, a step of interposing a sealing material on at least a part of the peripheral portion between the filled surfaces, and setting the first space from a vacuum state to a positive pressure as compared with the second space, The step of pressing the substrate with the elastic layer allows the smectic liquid crystal to be filled between the pair of substrates and at the same time seal at least a part of the peripheral portion between the pair of substrates. A method for manufacturing a display device.
ブ素子として、複合ダイオード構造を有する非線型素
子、または絶縁ゲイト型電界効果半導体装置を用いるこ
とを特徴とする液晶表示装置の作製方法。3. A method for manufacturing a liquid crystal display device according to claim 2, wherein a non-linear element having a composite diode structure or an insulating gate type field effect semiconductor device is used as the active element.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60155837A JP2535142B2 (en) | 1985-07-15 | 1985-07-15 | Liquid crystal display device manufacturing method |
| US06/885,662 US4691995A (en) | 1985-07-15 | 1986-07-15 | Liquid crystal filling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60155837A JP2535142B2 (en) | 1985-07-15 | 1985-07-15 | Liquid crystal display device manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6254229A JPS6254229A (en) | 1987-03-09 |
| JP2535142B2 true JP2535142B2 (en) | 1996-09-18 |
Family
ID=15614579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60155837A Expired - Lifetime JP2535142B2 (en) | 1985-07-15 | 1985-07-15 | Liquid crystal display device manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2535142B2 (en) |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5957221A (en) * | 1982-09-28 | 1984-04-02 | Asahi Glass Co Ltd | Production of display element |
| JPS60126624A (en) * | 1983-12-14 | 1985-07-06 | Seiko Epson Corp | Liquid crystal electrooptic device |
| JPS61190313A (en) * | 1985-02-20 | 1986-08-25 | Matsushita Electric Ind Co Ltd | Manufacture of liquid-crystal panel |
-
1985
- 1985-07-15 JP JP60155837A patent/JP2535142B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6254229A (en) | 1987-03-09 |
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