JPS6028627A - Liquid crystal display element - Google Patents
Liquid crystal display elementInfo
- Publication number
- JPS6028627A JPS6028627A JP13726583A JP13726583A JPS6028627A JP S6028627 A JPS6028627 A JP S6028627A JP 13726583 A JP13726583 A JP 13726583A JP 13726583 A JP13726583 A JP 13726583A JP S6028627 A JPS6028627 A JP S6028627A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- display element
- layer
- adhesive
- 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
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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
Abstract
Description
【発明の詳細な説明】
〔技術分野〕
この発明は、プラスチック基板液晶表示素子に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a plastic substrate liquid crystal display element.
液晶表示素子は、所定の電極パターンを有する２枚の透
明な上下基板の間に液晶物質を封入した構造であり、こ
の上下基板としては透明な電極をつけるための高温処理
を考慮して従来ガラスが用いられ、これをスペーサーを
介してエポキシ接着剤あるいは低融点ガラスハンダで外
周部を接着することが行われてきた。しかしガラスは欠
は易いため近時、ポリエチレンテレフタレート、ポリカ
ーボネート、ポリスルホンなどの可撓性を有するプラス
チックフィルムを基板として用いたものが開発され、従
来のガラス基板に比べ耐衝撃性の向上、曲面表示が容易
、安価である等の利点が挙げられている。第１図は、こ
のプラスチック基板の液晶表示素子の一例を示し、すな
わちプラスチック基板１ａ、 ｌａ’にホトリソグラフ
ィー等の方法により透明導電膜２ａ、２ａ’ を所定の
電極形状に形成したのち配向剤を塗布して配向膜３ａ、
３ａ’ を塗布し、さらにラビングを行い、これら基板
１ａ、Ｉａ’ を工ポキシ樹脂、アクリル樹脂、シリコ
ーン樹脂等の接着剤層５ａを介して外周部を接着し、内
部空間に液晶４ａを充填したのち液晶注入口を封止して
構成されている。しかし、上記の如く構成された液晶表
示素子は、接着剤層５ａとしてエポキシ系等の柔軟性に
欠ける接着剤を用いた場合には、接着しなかったり、接
着しても接着層と基板との弾性率の差が太きいため表示
素子を曲げて用いる場合、または製造工程中に曲げ応力
が加わった場合等に剥離しやすく、従って、液晶漏れや
外部からの不純物の浸入が起り易い。一方、シリコーン
、アクリル系等の柔軟性を有する接着剤を用いた場合に
は、接着しなかったり接着しても接着剤自体のガス透過
性、水蒸気透過性、液晶の透過性が高いためやはり外部
からの不純物の浸入や液晶漏れが起り易い。このように
、従来公知の液晶表示素子においては、シールでの気密
性が十分でなくそのため経時劣化、特に高温保存、高温
高湿保存時における劣化が著しく、実用上満足できるも
のではなかった。A liquid crystal display element has a structure in which a liquid crystal material is sealed between two transparent upper and lower substrates that have a predetermined electrode pattern. has been used, and the outer periphery of this has been bonded with epoxy adhesive or low melting point glass solder via a spacer. However, since glass is easily damaged, substrates using flexible plastic films such as polyethylene terephthalate, polycarbonate, and polysulfone have recently been developed, which have improved impact resistance and curved display compared to conventional glass substrates. Advantages such as ease and low cost are cited. FIG. 1 shows an example of a liquid crystal display element using this plastic substrate. In other words, transparent conductive films 2a, 2a' are formed in a predetermined electrode shape on plastic substrates 1a, 1a' by a method such as photolithography, and then an alignment agent is applied. Apply the alignment film 3a,
3a' and further rubbing, the outer peripheries of these substrates 1a and Ia' were adhered via an adhesive layer 5a made of polypropylene resin, acrylic resin, silicone resin, etc., and the internal space was filled with liquid crystal 4a. The liquid crystal injection port was later sealed. However, in the liquid crystal display element configured as described above, when an inflexible adhesive such as an epoxy adhesive is used as the adhesive layer 5a, the adhesive layer and the substrate may not be bonded, or even if bonded, the adhesive layer and the substrate may not be bonded. Due to the large difference in elastic modulus, it is easy to peel off when the display element is bent and used, or when bending stress is applied during the manufacturing process, and therefore liquid crystal leakage and impurities from the outside are likely to occur. On the other hand, when using a flexible adhesive such as silicone or acrylic, the adhesive itself has high gas permeability, water vapor permeability, and liquid crystal permeability, so even if it does not adhere, it still It is easy for impurities to seep in and liquid crystal leakage to occur. As described above, in conventionally known liquid crystal display elements, the airtightness of the seal is not sufficient, and as a result, deterioration over time, particularly during high temperature storage and high temperature and high humidity storage, is significant, and it is not practically satisfactory.
この発明は、上記従来のものの欠点の無い高気密性が保
持される信頼性の高いプラスチックフイるム基板液晶表
示素子を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a highly reliable plastic film substrate liquid crystal display element that maintains high airtightness and does not have the drawbacks of the conventional devices.
本発明によれば、複数枚のプラスチック基板を相互に外
周を封止して重合し、これら基板間に液晶を封入してな
る液晶表示素子において、上記外周を封止する接着剤層
を、共縮合ポリエステルを主成分とする熱溶融型接着剤
で構成したことを特徴とする液晶表示素子が提供される
。According to the present invention, in a liquid crystal display element in which a plurality of plastic substrates are polymerized with their outer peripheries sealed and a liquid crystal is sealed between these substrates, the adhesive layer for sealing the outer periphery is shared. There is provided a liquid crystal display element characterized in that it is constructed with a hot-melt adhesive containing condensed polyester as a main component.
本発明の１実施例を第２図について説明すると、１．１
′はプラスチック基板、２．２′は透明導電膜、３．３
′は配向膜、４は液晶であって、ここまでは前記第１図
に示した従来のものと同様であるが、この発明において
は上下プラスチック基板１．１′ を連ねる接着剤層５
を特に共縮合ポリエステルを主成分とする熱溶融型接着
剤で形成してなるものである。One embodiment of the present invention will be explained with reference to FIG. 2: 1.1
' is a plastic substrate, 2.2' is a transparent conductive film, 3.3
' is an alignment film, 4 is a liquid crystal, and up to this point it is the same as the conventional one shown in FIG.
In particular, it is formed using a hot-melt adhesive mainly composed of co-condensed polyester.
上記、共縮合ポリエステルを主成分とする熱溶融型（ホ
ットメルト）接着剤層５は、
】）フィルム状の樹脂をプレス等で所定の形状に裁断し
基板上に配置する。The above-mentioned hot-melt adhesive layer 5 mainly composed of co-condensed polyester is prepared by: ]) Cutting a film-like resin into a predetermined shape using a press or the like and placing it on a substrate.
２）粉末状の樹脂をディスペンサー等により所定形状に
基板上に配置する。2) Powdered resin is placed on the substrate in a predetermined shape using a dispenser or the like.
３）樹脂を溶媒に溶解させ、この溶液を塗布、印刷等の
方法により基板上に配置したのち残留溶媒を留去する等
の方法によりシール形状を形成させ、次いで対向基板を
重ねあわせ荷重を印加して溶融温度以上の温度で加熱す
る等の方法により形成さＩＬる。3) Dissolve the resin in a solvent, place this solution on the substrate by coating, printing, etc., then form a seal shape by distilling off the residual solvent, etc., then stack the opposing substrates and apply a load. IL is formed by a method such as heating at a temperature higher than the melting temperature.
ここで、共縮合ポリエステルを主成分とする熱溶融型性
着剤層５は高い耐熱性を有するポリエチレンテレフタレ
ート（【〕肝）の熱溶融温度を下げるため、共縮合によ
り合成された樹脂であり、共縮合成分としては例えば、
ジカルボン酸成分としてはテレフタル酸、イソフタル酸
、■、５−ナフタレンジカルボン酸、２，６−ナフタレ
ンジカルボン酸、ジ安息香酸、ビス（Ｐ−カルボキシフ
ェニル）メタン、４，４′−スルホニルジ安息香酸等の
芳香族ジカルボン酸、アジピン酸、マロン酸、酒石酸、
コハク酸、などの脂肪族ジカルボン酸等を、ジオールと
しては、エチレングリコール、プロピレングリコール、
テトラメチレングリコール、ペンタメチレングリコール
、ヘキサメチレングリコール、シクロヘキサングリコー
ル等をあげることができるがこれに限定されるものでは
ない。上記した如きモノマーの数種を選択して重合触媒
の存在下に重合することにより本発明で用いる共縮合ポ
リエステルが得られる。尚、ｐ−ビトロキシ安息香酸の
ような、オキシ酸から誘導されるポリエステルであって
もよい。Here, the heat-melting adhesive layer 5 mainly composed of co-condensed polyester is a resin synthesized by co-condensation in order to lower the heat-melting temperature of polyethylene terephthalate ([] liver), which has high heat resistance. Examples of cocondensation components include:
Dicarboxylic acid components include terephthalic acid, isophthalic acid, 5-naphthalene dicarboxylic acid, 2,6-naphthalene dicarboxylic acid, dibenzoic acid, bis(P-carboxyphenyl)methane, 4,4'-sulfonyl dibenzoic acid, etc. aromatic dicarboxylic acids, adipic acid, malonic acid, tartaric acid,
Diols include aliphatic dicarboxylic acids such as succinic acid, ethylene glycol, propylene glycol,
Examples include, but are not limited to, tetramethylene glycol, pentamethylene glycol, hexamethylene glycol, and cyclohexane glycol. The co-condensed polyester used in the present invention can be obtained by selecting several types of monomers as described above and polymerizing them in the presence of a polymerization catalyst. Note that polyesters derived from oxyacids such as p-bitroxybenzoic acid may also be used.
本発明で用いる接着剤は上記の如き共縮合ポリエステル
の１種又は２種以上を主成分とするものであるが、この
接着剤としては、特に高い気密性、接着強度、耐液晶性
、耐配向性を確保する上で、軟化点が１００℃以上のも
のが好ましい。軟化点が１００℃以下であると、液晶材
料が接着剤に浸透したり、接着剤を溶解したりすること
があり、十分満足のゆく結果が得られないことがある。The adhesive used in the present invention is mainly composed of one or more co-condensed polyesters as described above, and this adhesive has particularly high airtightness, adhesive strength, liquid crystal resistance, and orientation resistance. In order to ensure properties, those having a softening point of 100° C. or higher are preferable. If the softening point is below 100° C., the liquid crystal material may penetrate or dissolve the adhesive, and a fully satisfactory result may not be obtained.
一方、１８０℃を越えると、接着時に高温を要し、この
ため基板の熱変化を生じさせ、組立て精度やパターン精
度の低下等を招く恐れがある。このようなことから、本
発明の接着層５としては、軟化点が１００〜１８０℃の
範囲のものの使用が好ましい。On the other hand, if the temperature exceeds 180° C., a high temperature is required during bonding, which may cause thermal changes in the substrate, leading to a decrease in assembly precision and pattern precision. For this reason, the adhesive layer 5 of the present invention preferably has a softening point in the range of 100 to 180°C.
本発明で用いる接着剤中には、その補助成分とし、他の
高分子樹脂１例えばエチレン−酢酸ビニル共重合体、熱
可塑性フェノール樹脂等の他の樹脂成分を併用すること
も可能であり、この場合、主成分である共縮合ポリエス
テル１重量部に対し、０．５重量部以下で使用される。In the adhesive used in the present invention, other resin components such as ethylene-vinyl acetate copolymer, thermoplastic phenol resin, etc. can also be used in combination as auxiliary components. In this case, it is used in an amount of 0.5 parts by weight or less per 1 part by weight of the co-condensed polyester as the main component.
また。炭酸カルシウム、シリカ微粒子、珪酸マグネシウ
ム、アルミナ、酸化チタン等の無機フィラーを０．１重
量部以−ドで使用することもできる。このような補助成
分を用いることにより接着性、流動性、固化性、機械的
性質、可撓性等の性質を調整できる。Also. Inorganic fillers such as calcium carbonate, silica particles, magnesium silicate, alumina, and titanium oxide may also be used in an amount of 0.1 part by weight or more. By using such auxiliary components, properties such as adhesiveness, fluidity, solidification, mechanical properties, and flexibility can be adjusted.
なお、基板１．１′ としては従来と同じくポリエチレ
ンテレフタレー１へ、ポリブチレンテレフタレート、等
のポリエステル、ポリスルホン、ポリエーテルスルホン
ルロース、ポリメタクリル酸エステル等の透光性を有す
るプラスチックをあげることができるが、この場合、特
に耐熱性、耐溶剤性、耐液晶性、ガス透過性、水蒸気透
過性などのプラスチック基板液晶表示素子の信頼性を左
右する物性値からポリエチレンテレフタレートが最も好
ましい。この場合ポリエチレンテレフタレートは応力を
加えた場合、１７０〜１８０℃で熱変形を生ずるため用
いられる共縮合ポリエステル接着剤としては上記理由に
より軟化点が１３０〜１５０℃のものが、最も好ましい
。As the substrate 1.1', as in the past, polyesters such as polyethylene terephthalate 1, polybutylene terephthalate, polysulfone, polyethersulfone luulose, polymethacrylic acid ester, and other translucent plastics can be used. However, in this case, polyethylene terephthalate is most preferred in view of the physical properties that influence the reliability of the plastic substrate liquid crystal display element, such as heat resistance, solvent resistance, liquid crystal resistance, gas permeability, and water vapor permeability. In this case, polyethylene terephthalate undergoes thermal deformation at 170 DEG to 180 DEG C. when stress is applied, so the most preferable co-condensed polyester adhesive used is one having a softening point of 130 DEG to 150 DEG C. for the above reasons.
通常ポリエステル系の基板は接着が難しく十分な接着強
度を有する接着剤はごく限定される。例えば液晶表示素
子用の接着剤として要求される液晶及び配向膜に悪影響
を及ぼさず、気密性の高いという条件を満たすエポキシ
系接着剤では３０〜５０ｇ／ＣＩ１１程度のＴ型剥離強
度しか得られない。この点本発明で用いる共縮合ポリエ
ステル系熱溶融型接着剤はポリエステル基板に対し４０
０〜８００ ｇ ／ ｃｍの接着強度を有し、十分な気
密性を有し、液晶や配向膜に対する影響も少ない。Normally, it is difficult to bond polyester-based substrates, and there are only a limited number of adhesives that have sufficient adhesive strength. For example, an epoxy adhesive that satisfies the requirements for adhesives for liquid crystal display devices, such as not having a negative effect on the liquid crystal and alignment film and having high airtightness, can only achieve a T-peel strength of about 30 to 50 g/CI11. . In this regard, the co-condensed polyester hot-melt adhesive used in the present invention has a
It has an adhesive strength of 0 to 800 g/cm, has sufficient airtightness, and has little effect on liquid crystals and alignment films.
次に第３図は、この発明の他の実施例を示す。Next, FIG. 3 shows another embodiment of the present invention.
すなわち前記第２図と同じく共縮合ポリエステルによる
接着層５を有するとともに、第４図に明らかなように、
その内側に沿ってさらに補強用接着剤層６を設け，接着
強度を増大させたものであって、この補強用接着剤層６
を形成する接着剤は、シリコーン系接着剤のような前記
従来の接着剤層で用いる慣用のものが用いられる。この
ように共縮合ポリエステル接着剤層５の液晶と接する側
に、他の組成よりなる接着剤層６を設けることにより、
外周部ホットメルト接着剤５の可使範囲を広げることが
できる。すなわち、多少液晶、配向膜へ悪影響を及ぼす
ものであっても内周部接着剤層がそのストッパーとなり
信頼性を向上することができる。That is, it has the same adhesive layer 5 made of co-condensed polyester as shown in FIG. 2, and as is clear from FIG. 4,
A reinforcing adhesive layer 6 is further provided along the inner side to increase adhesive strength, and this reinforcing adhesive layer 6
As the adhesive forming the layer, a conventional adhesive used in the conventional adhesive layer, such as a silicone adhesive, can be used. By providing the adhesive layer 6 made of another composition on the side of the co-condensed polyester adhesive layer 5 in contact with the liquid crystal in this way,
The usable range of the outer peripheral hot melt adhesive 5 can be expanded. That is, even if the adhesive layer has some adverse effect on the liquid crystal and alignment film, the inner circumferential adhesive layer acts as a stopper and can improve reliability.
この発明は以上説明したように、基板１．１′の周縁を
連ねる接着剤層５を特に共縮合ポリエステルを主成分と
する熱溶融型接着剤で形成したため高気密性を保持して
液晶や配向膜を保護す−ことができる。例えば、本発明
の液晶表示素子は、８０℃１０００時間の高温保存試験
において、目視観察による不良はまったくみられず，さ
らに閾値電圧、飽和電圧、コントラスト、消費電流、立
上がり時間、立ち下がり時間の電気光学特性もいずれも
初期値変動２０％以内であって、高い信頼性を示し時計
、電卓等の表示はもちろん環境条件のきびしい自動車用
スピードメータ表示などにも応用が可能である等、多く
の利点がある。As explained above, in this invention, the adhesive layer 5 connecting the periphery of the substrate 1.1' is formed with a hot-melt adhesive mainly composed of co-condensed polyester, so that it maintains high airtightness and can be used for liquid crystal and alignment. The membrane can be protected. For example, in a high-temperature storage test at 80°C for 1,000 hours, the liquid crystal display element of the present invention showed no defects at all by visual observation, and was further improved in terms of threshold voltage, saturation voltage, contrast, current consumption, rise time, and fall time. The optical properties have many advantages, such as initial value variation within 20%, which shows high reliability, and can be applied not only to displays such as watches and calculators, but also to automobile speedometer displays, which have severe environmental conditions. There is.
本発明を次に実施例により更に詳細に説明する。 The present invention will now be explained in more detail with reference to Examples.
実施例 １
帝人■製透明導電膜付き、ポリエステルフィルムにホト
リソグラフィーにより所定の電極を形成後、有機チタネ
ート、エポキシ、ナイロンからなる配向膜を形成し、ラ
ビングを行なう。この基板に、東しシリコーン社製、シ
リコーン系接着剤ＳＥ−１７００をスクリーン印刷し，
さらにこの接着層の外側に３図のようにフィルム状ポリ
エステル接着剤（セメダイン曲製ＸＡ１０３１、厚さ３
０μ、軟化点１４０℃）を配置した。同様に配向処理を
処した基板と、前記基板とを１０μｍのスペーサーを介
して、配向軸が直交するように貼り合わせ、１５０℃１
時間加熱することにより空セルを作製した。次ν）で、
Ｅ、Ｍｅｒｃｋ社製自動車用液晶ＺＬＩ−１５６５を真
空封入法により封入し、封入口を超音波溶着により封止
して、ツィステッドネマチック型の液晶表示素子を作製
した。この液晶表示素子は８０℃１０００時間の高温保
存試験において配向劣化等の目視外観不良をまったく示
さず電気光学特性も下表のように初期値変動±２０％以
内と極めて高い信頼性を示した。Example 1 After forming a predetermined electrode on a polyester film with a transparent conductive film manufactured by Teijin ■ by photolithography, an alignment film made of organic titanate, epoxy, and nylon was formed and rubbed. On this board, silicone adhesive SE-1700 manufactured by Toshi Silicone Co., Ltd. was screen printed.
Furthermore, on the outside of this adhesive layer, as shown in Figure 3, a film-like polyester adhesive (XA1031 manufactured by Cemedine Kyoku, thickness 3
0μ, softening point 140°C). A substrate that had been subjected to a similar alignment treatment and the above substrate were bonded to each other via a 10 μm spacer so that the alignment axes were perpendicular to each other.
An empty cell was prepared by heating for a period of time. Next ν),
E. Merck's automotive liquid crystal ZLI-1565 was sealed by a vacuum sealing method, and the filling opening was sealed by ultrasonic welding to produce a twisted nematic type liquid crystal display element. This liquid crystal display element showed no visual defects such as alignment deterioration in a high-temperature storage test at 80° C. for 1000 hours, and its electro-optical properties exhibited extremely high reliability with initial value variation within ±20% as shown in the table below.
８０℃１０００時間エージング後の初期値との比閾値電
圧 １．０２
飽和電圧 １．１０
コントラスト比 ０．９５
消費電流 １．０２
立ち上がり時間 １．１３
立ち下がり時間 １．１１
実施例１においてシリコーン系接着剤を用いずに、ポリ
エステル接着剤のみにより第２図図示の如き液晶表示素
子を作製した。この液晶表示素子は８０℃５００時間の
高温保存試験において配向劣化等の目視外観不良をまっ
たく生ぜず電気光学特性も実施例１と同様に初期値変動
±２０％以内であった。Ratio to initial value after aging at 80°C for 1000 hours Threshold voltage 1.02 Saturation voltage 1.10 Contrast ratio 0.95 Current consumption 1.02 Rise time 1.13 Fall time 1.11 Silicone adhesive in Example 1 A liquid crystal display element as shown in FIG. 2 was manufactured using only a polyester adhesive without using any adhesive. This liquid crystal display element did not exhibit any visual appearance defects such as alignment deterioration in a high-temperature storage test at 80° C. for 500 hours, and its electro-optical properties were within ±20% of the initial value variation, as in Example 1.
比較例 １
実施例１において、ポリエステル接着剤を用いずにシリ
コーン系接着剤のみにより液晶表示素子を作製した。こ
の液晶表示素子は、６０℃１０００時間の高温保存試験
には耐えるものの８０℃の高温保存試験においては約１
００時間で配向劣化を生じ液晶表示素子としての機能を
有さなくなってしまった。Comparative Example 1 In Example 1, a liquid crystal display element was produced using only a silicone adhesive without using a polyester adhesive. Although this liquid crystal display element can withstand a high temperature storage test of 1000 hours at 60°C, it has a temperature of about 1
After 00 hours, the alignment deteriorated and it no longer functioned as a liquid crystal display element.
第１図は従来の液晶表示素子の側面断面図、第２図は本
発明による液晶表示素子の側面断面図、第３図、第４図
はそれぞれ本発明の他の実施例を示す側面断面図および
平面図である。
図中、 ｔ、ｔ’は基板、２．２′は透明導電膜、３．
３′ば配向膜、４は液晶、５．６は接着剤層。
特許出願人 株式会社 リ コ −
代理人弁理士 池浦敏明
第１図
術 ２ 図
第３図
第４図FIG. 1 is a side sectional view of a conventional liquid crystal display element, FIG. 2 is a side sectional view of a liquid crystal display element according to the present invention, and FIGS. 3 and 4 are side sectional views showing other embodiments of the present invention. and a plan view. In the figure, t and t' are substrates, 2.2' is a transparent conductive film, and 3.
3' is an alignment film, 4 is a liquid crystal, and 5.6 is an adhesive layer. Patent applicant Rico Co., Ltd. - Representative patent attorney Toshiaki Ikeura Figure 1 Figure 2 Figure 3 Figure 4
Claims (3)
て重合し、これら基板間に液晶を封入してなる液晶表示
素子において、上記外周を封止する接着剤層を、共縮合
ポリエステルを主成分とする熱溶融型接着剤で構成した
ことを特徴とする液晶表示素子。(1) In a liquid crystal display element in which a plurality of plastic substrates are polymerized with their outer peripheries sealed and liquid crystal is sealed between these substrates, the adhesive layer sealing the outer periphery is made of co-condensed polyester. A liquid crystal display element characterized by being composed of a hot-melt adhesive as a main component.
着剤層に沿って別個の接着剤層を、前記接着剤と異なる
成分からなる接着剤を以って構成してなる特許請求の範
囲第１項の液晶表示素子。(2) A separate adhesive layer is formed inside the adhesive layer sealing the outer periphery and along this adhesive layer, using an adhesive made of a different component from the adhesive. A liquid crystal display element according to claim 1.
ステルで形成されたものである特許請求の範囲第１項又
は第２項の液晶表示素子。(3) The liquid crystal display element according to claim 1 or 2, wherein at least one of the plastic substrates is made of polyester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13726583A JPS6028627A (en) | 1983-07-27 | 1983-07-27 | Liquid crystal display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13726583A JPS6028627A (en) | 1983-07-27 | 1983-07-27 | Liquid crystal display element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6028627A true JPS6028627A (en) | 1985-02-13 |
Family
ID=15194626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13726583A Pending JPS6028627A (en) | 1983-07-27 | 1983-07-27 | Liquid crystal display element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6028627A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05289090A (en) * | 1992-02-21 | 1993-11-05 | Samsung Electron Co Ltd | Seal pattern for liquid crystal display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50100995A (en) * | 1973-12-17 | 1975-08-11 | ||
| JPS5247033A (en) * | 1975-10-13 | 1977-04-14 | Fuji Photo Film Co Ltd | Releasable adhesive |
| JPS55105226A (en) * | 1979-08-16 | 1980-08-12 | Ricoh Elemex Corp | Sealing agent for plastic liquid crystal panel |
-
1983
- 1983-07-27 JP JP13726583A patent/JPS6028627A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50100995A (en) * | 1973-12-17 | 1975-08-11 | ||
| JPS5247033A (en) * | 1975-10-13 | 1977-04-14 | Fuji Photo Film Co Ltd | Releasable adhesive |
| JPS55105226A (en) * | 1979-08-16 | 1980-08-12 | Ricoh Elemex Corp | Sealing agent for plastic liquid crystal panel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05289090A (en) * | 1992-02-21 | 1993-11-05 | Samsung Electron Co Ltd | Seal pattern for liquid crystal display device |
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