JPS617822A - 液晶素子の製造方法 - Google Patents

液晶素子の製造方法

Info

Publication number
JPS617822A
JPS617822A JP12740784A JP12740784A JPS617822A JP S617822 A JPS617822 A JP S617822A JP 12740784 A JP12740784 A JP 12740784A JP 12740784 A JP12740784 A JP 12740784A JP S617822 A JPS617822 A JP S617822A
Authority
JP
Japan
Prior art keywords
adhesive
liquid crystal
pair
substrates
spacer member
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
Application number
JP12740784A
Other languages
English (en)
Inventor
Shinjiro Okada
伸二郎 岡田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP12740784A priority Critical patent/JPS617822A/ja
Publication of JPS617822A publication Critical patent/JPS617822A/ja
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1339Gaskets; Spacers; Sealing of cells
    • G02F1/13394Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 良1豆芳 本発明は、液晶表示装置におけるセルのIi!法に関す
るもので、特に1〜2μmというように微小な間隙を必
要とする液晶表示用セルの製法に関するものである。
11且遣 従来、液晶表示装置に使用されるセルは、第1図に示す
ように、それぞれ透明電極11a、11bを設けたガラ
ス板等からなる一対の透明基板12a、12bを、それ
ぞれの電極形成面を内側にして対向配置し1周縁部にお
いてエポキシ系樹脂接着剤等の接着剤13により接着固
定した構成を有する。その際、透明基板間に液晶を封入
すべき空間14を与えるための間隔を保持するために、
前記接着剤13中にガラス繊維粉砕物。
Al2O3粉末等で、所定の大きさを有するものからな
るギャップ制御材を予め適量混入することによって、セ
ル間隔を制御したり、前記接着剤をスクリーン印刷等の
方法で透明基板上に形成した後、上記のようなギャップ
制御材を均一に散布して、透明基板間の間隔を保持しつ
つ接着固定を行なう方法が行なわれていた。
しかしながら、上記のような方法では、基板間隔に多少
のバラツキがでることは避けられず、特に基板間隔が1
〜2g、m程度に薄くなると、生ずる基板間隔のバラツ
キが表示特性に与える悪影響が無視できなくなる。
先且立里講 本発明の目的は、上述の事情に鑑み、基板間隔が1〜2
JLm程度と微小な場合であっても、均一で安定な基板
間隔を有する液晶表示用セルを製造する方法を提供する
ことにある。
l見立11 本発明の液晶表示用セルは、上述の目的を達成するため
に開発されたものであり、より詳しくは、それぞれ一面
に電極を形成した一対の電極基板を、それぞれの電極形
成面を内側にして対向配置し、周縁部を接着剤により接
着固定して液晶表示用セルを形成するに際して、少なく
とも一方の基板の中央部において、スペーサ部材を形成
した後、接着剤を印刷し、周縁部に設けた接着剤ととも
に一対の電極基板を接着固定することを特徴とするもの
である。
すなわち、本発明においては、基板の中央部において、
スペーサ部材とは別に接着剤を使用することにより、一
対の基板の接着固定において、加えられる圧縮力に対し
ては、スペーサ部材により支承し、また接着固定後にお
いては、接着剤により定められた間隔を維持するために
、均一で安定な基板間隔が与えられることになる。特に
、スペーサ部材の形成に際してはλ単位での厚さ制御の
可能な成膜技術を利用可能であるため、精密な間隔制御
も可能となる。
1亙遣 第2図は、本発明方法に従う液晶表示セル製造過程を説
明するための側視図である。
すなわち、それぞれITO(インジウム−すず複合酸化
物)等からなる透明電極を設は且つ必要に応じて液晶配
向膜を形成したガラス板等からなる一対の透明基板22
a、22bを用意し、まずこの基板の少なくとも一方の
上にスペーサ部材25を形成する。このスペーサ部材形
成は、好ましくは一様な成膜ならびにその部分的除去工
程を含むリソグラフィー技術により形成される。スペー
サ部材材料としては樹脂材料が好ましく用いられ、なか
でも厚膜形成ができること、液晶の水平配向性がある等
の理由によりポリイミドが好ましく用いられる。リソグ
ラフィー技術により例えば厚さが1〜3gm、幅5〜l
oog’mのストライプ状スペーサ部材25を、0.1
〜2 m mのピッチで形成した後、スペーサ部材12
の間に例えば0.1〜2mm程度の適宜の間隔で接着剤
26を印刷により形成する。この接着剤の好ましい一例
は未硬化のポリイミド樹脂であり、これをスクリーンも
しくはオフセット印刷等の方法により印刷して例えば厚
さt、o〜3.0ルm、巾o、i〜0.5gm程度の接
着剤ストライプ13を形成する。また同様な材質(この
場合は、上記の接着剤と同時に塗布できる)あるいはエ
ポギシ系樹脂等からなる異なる材質の接着剤27を周縁
部に塗布し、他方の基板と組合せて接着固定する。
第3図は、かくして得られる液晶セルの一例の厚さ方向
断面図であり、この例では、対向基板22a上には、電
極膜21aを覆って液晶配向用にポリイミド樹脂膜28
のみが形成されている。
上記例示の液晶表示セルの具体的な製造例を説明する。
旧 まず透明電極21bを設けたカラス基板上に、γ−(2
−アミノエチル)アミノプロピルトリメトキシシランの
nブタノール0.3wt%溶液をスピンナーを用い20
00rpm、40秒の条件で塗布し、150℃に30分
間保持して硬化させた後、ポリイミド前駆体(東し社製
5P−510)の2wt%N−メチルピロリドン溶液を
350Orpm、1分間の条件でスピンコードして、更
に150℃で焼成して厚さ2pmのポリイミド膜を形成
した9次いで、ポジレジストを用いてパターン化し、更
にヒドラジンNaOH混合液によリ、」―記ポリイミド
を30″Cに加熱したピロリドン:NaOH3%溶液=
4:3混合液に5〜15分間浸漬してポリイミドをエツ
チングした後、レジストを剥離してストライプ状のスペ
ーサ25を形成した。
その後再び、−上記のように、γ−(2−アミノエチル
)アミノプロピルトリメトキシシランのnブタノール0
.3wt%溶液を基板全面に塗布し硬化させた後に、上
記ポリイミド前駆体5P−5】Oをスクリーン印刷もし
くは、オフセット印刷法により、ストライプ26および
27のように印刷した。
他方、対向基板22aは、ITO電極21. a 、J
−に厚さ400〜500人のボリイ゛ミド膜28を形成
し、ラビング処理したものであって、これをJ二記のよ
うに接着剤を印刷した基板22bと位置合せした後、接
着を行ない、4.0kg/cm2程度の圧力でプレスし
つつ、240°Cで3時間焼成した。
これにより、2g、mの均一な基板間隔を有する第3図
に示すようなセルが得られた。
旧 上記例1の方法においては、」ニアガラス基板を、ポリ
イミド接着剤26および27のみによって接着している
。このため、プレスの際のガラス基板に働らく応力や歪
の解消によって、剥離が生し易い欠点がある。
これを避けるために、この例では、一旦、基板22b上
にポリイミドによるストライブ状接着剤26のみを印刷
し、更に対向基板22aと組合せて加圧下に焼成し、両
基板を接着固定した後、更に周縁部にエポキシ系接着剤
27を塗布し硬化させて、補強ならびにシールする構造
を取った。この例ではエポキシ系接着剤27による補強
を両基板をプ1/スしつつ行なったが、プレスを開放し
た状態で行なうことも可能である。
兄−匪立蓋】 以上説明したように、本発明によれば、基板間隔が1〜
2pm程度というように微小である液晶表示用セルを形
成するに際して、基板中央部にスペーサ部材を形成した
後、接着剤を印刷し、周縁部の接着剤とともに接着固定
する構成を取ることにより、中央に設けた接着剤を接着
剤兼スペーサ部材として機能させることができ、基板間
隔が1〜2pLm程度と微小な場合であっても、均一で
安定な基板間隔を有する液晶表示用セルを製造する方法
が提供される。
【図面の簡単な説明】
第1図は従来の液晶表示セルの厚さ方向断面図、第2図
は本発明方法に従う液晶表示セル製造過程を説明するだ
めの斜視図、第3図は得られる液晶表示セルの一例の厚
さ方向断面図である。 11a、llb、21a、21b+1#透明電極22a
、22b・・・透明基板 2511・1スペ一サ部材 26拳−・中央部接着剤 13.27・・・周縁部接着剤 側lJ:第2図 第1 図 1ム

Claims (1)

  1. 【特許請求の範囲】 1、それぞれ一面に電極を形成した一対の電極基板を、
    それぞれの電極形成面を内側にして対向配置し、周縁部
    を接着剤により接着固定して液晶表示用セルを形成する
    に際して、少なくとも一方の基板の中央部において、ス
    ペーサ部材を形成した後、接着剤を印刷し、周縁部に設
    けた接着剤とともに一対の電極基板を接着固定すること
    を特徴とする液晶素子の製造方法。 2、前記スペーサ部材を、一様な成膜ならびにその部分
    的除去工程を含むリソグラフィー技術により形成する特
    許請求の範囲第1項に記載の液晶素子の製造方法。 3、基板中央部に形成する接着剤およびスペーサ部材が
    いずれもポリイミド系樹脂からなる特許請求の範囲第1
    項または第2項に記載の液晶素子の製造方法。
JP12740784A 1984-06-22 1984-06-22 液晶素子の製造方法 Pending JPS617822A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12740784A JPS617822A (ja) 1984-06-22 1984-06-22 液晶素子の製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12740784A JPS617822A (ja) 1984-06-22 1984-06-22 液晶素子の製造方法

Publications (1)

Publication Number Publication Date
JPS617822A true JPS617822A (ja) 1986-01-14

Family

ID=14959215

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12740784A Pending JPS617822A (ja) 1984-06-22 1984-06-22 液晶素子の製造方法

Country Status (1)

Country Link
JP (1) JPS617822A (ja)

Cited By (135)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6350817A (ja) * 1986-08-20 1988-03-03 Semiconductor Energy Lab Co Ltd 液晶電気光学装置作製方法
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