JPS60146228A - Liquid crystal display element - Google Patents
Liquid crystal display elementInfo
- Publication number
- JPS60146228A JPS60146228A JP321684A JP321684A JPS60146228A JP S60146228 A JPS60146228 A JP S60146228A JP 321684 A JP321684 A JP 321684A JP 321684 A JP321684 A JP 321684A JP S60146228 A JPS60146228 A JP S60146228A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- sealing
- crystal display
- display element
- layers
- 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〕 本発明は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 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成であり、こ
の」二下基板としては透明な電極をつけるための高調処
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１−、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ｉＪ衝撃性の向」二１曲面表
示が容易、安価である等の利点か挙げられている。第２
図（ａ）及び（ｂ）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’ にホトリソク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、ごらにラ
ビングを行い、こ汎ら基板１ａ、Ｉａ’ をエポキシ樹
脂、アクリル慴脂、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
のち液晶注入口に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］二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、ウレタン、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、？′＋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
や液晶漏が起り易く、また、接着剤の成分や不純物が液
晶や配向１漠に悪影響を与える場合もある。特開昭５７
−１７８２２１号公報には、シロキサン結合を有する反
応硬化型ポリマー（以下シリコーン系接着剤という）を
シール用接着剤として用いることが示されている。この
シリコーン系接着剤は、接着力及び液晶や配向膜に刻す
る影響の点では良ＡＴなものであるが、伝頼性、特に高
１１１１’Ｌ保イｒ性の点では十分なものとはいえなか
った。A liquid crystal display element has a structure in which a liquid crystal substance is sealed between two transparent upper and lower substrates each having a predetermined electrode pattern. Conventionally, glass has been used, and the outer periphery of the glass has been bonded with an epoxy adhesive or low-melting glass solder via a spacer. However, glass is easily damaged, so recently, substrates using flexible plastic films such as polyethylene terephthalate, polycarbonate, and polysulfone have been developed, which have improved impact resistance compared to conventional glass substrates. The advantages include ease of displaying 21 curved surfaces and low cost. Second
Figures (a) and (b) show an example of a liquid crystal display element using this plastic substrate, that is, a plastic substrate 1a,
Transparent conductive films 2a, 2a' are formed in a predetermined electrode shape on la' by a method such as photolithography, and then an alignment agent is applied, and alignment films 3a, 3a' are applied, followed by rubbing. The outer peripheries of the substrates 1a and Ia' are bonded together via an adhesive layer 5a made of epoxy resin, acrylic resin, silicone resin, etc., the internal space is filled with liquid crystal 4a, and the liquid crystal injection port is sealed. has been done. 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. Because of 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, if a flexible adhesive such as urethane or acrylic is used, it may not stick, or it may not stick even if it is bonded. ′+ The gas permeability and water vapor permeability of the agent itself,
Since the liquid crystal is highly transparent, it is easy for impurities to enter from the outside and liquid crystal leakage occurs, and the components of the adhesive and impurities may have an adverse effect on the liquid crystal and its alignment. Japanese Unexamined Patent Publication No. 1983
JP-A-178221 discloses the use of a reaction-curable polymer having a siloxane bond (hereinafter referred to as a silicone adhesive) as a sealing adhesive. This silicone adhesive has good AT properties in terms of adhesive strength and impact on liquid crystals and alignment films, but it is not sufficient in terms of reliability, especially high 1111'L retention. I couldn't say it.
以−にのように、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１−分でなくそのため経時劣化、特
に高ｎｌ保存、高温高湿保存時における劣化が著しく、
実用上米だ必定でさるものではなかった。As mentioned above, in conventionally known liquid crystal display elements,
The airtightness of the seal is not 1 minute, so it deteriorates over time, especially when stored at high nl or at high temperature and high humidity.
For practical purposes, it was inevitable that it would be rice.
本発明は、」二記従来のものの欠点の無い高ｌＡ、密性
が保持されると共に、信頼性」−の問題、殊に耐高温性
、耐高温高湿性に改良された液晶表示素子を提供するこ
とを［・ｉ的とする。The present invention provides a liquid crystal display element which is free from the drawbacks of the conventional devices (2), which maintains high lA and density, and which has improved reliability, particularly in terms of high temperature resistance and high temperature and high humidity resistance. To do something is [・i-purpose].
本発明によれば、電極を構成した透明基板の相数をその
外周をシールして重合し、基板間に液晶を封入した液晶
表示素子において、ｉ官記シール部を複数のシール層に
より構成し、かつ前記ＪｊＪ数のシール層間の空隙部に
対しても液晶を封入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 the outer periphery of the transparent substrates forming the electrodes is sealed and polymerized, and liquid crystal is sealed between the substrates, the i-official seal portion is constituted by a plurality of sealing layers. There is also provided a liquid crystal display element characterized in that liquid crystal is also sealed in the gaps between the JjJ number of sealing layers.
次に、Ａ−発明の液晶表示素子の１実施例を第１図［二
説明すると、ｌ、１′ は透明）、（板、２，２′ は
酸化インジウム、酸化スズ等からなる透明導電１模、３
，３′け配向１１！Ｘ（，４は液晶である。５，６はシ
ール部であり、シール層５をシール層６とから構成され
、外周シールＪ＋ＩＪ ５の内方に、さらにその外周シ
ール５に沿って別個のシール層６を設けてあり、さらに
、シール層５，６の空隙部にも？ｆ１４品４′が封入さ
れている。このように、シール部を多重構造とすること
により。Next, one embodiment of the liquid crystal display element of the A-invention is shown in FIG. model, 3
, 3' orientation 11! X(, 4 is a liquid crystal. 5 and 6 are seal parts, which are composed of a seal layer 5 and a seal layer 6, and a separate seal is provided inside the outer circumferential seal J+IJ 5 and further along the outer circumferential seal 5. A layer 6 is provided, and the ?f14 product 4' is also sealed in the gap between the sealing layers 5 and 6. In this way, the sealing portion has a multilayer structure.
イニ軟性を有する接着剤を用いた場合でも、外部からの
不純物、ガス等の浸入が防止されると共に、ヒル内部か
らの液晶もれも減少される。その−Ｊ二、本発明の場合
には、シール層５とシールＷＪ６との間に形成される空
隙部には、液晶４′が充填封入されていることから、前
記のようにシール部をｔｊｔに多’ＩＩ’（構造とした
ｊｉ、＞合よりも、外部からの不純物やガス等の浸入防
１１−効果及びセル内部からの液晶漏れ防出効果は−・
層高められたものとなる。さらに、シール層５，６間に
液晶を封入しない場合には、加熱によりシールＷＩ５
＋ ”間の空隙部に存在する空気が膨張してシール内部
に浸入する場合もあるが、本発明の場合には、シール層
５，６間には液晶が充填されていることから、このよう
な不都合は全く生じない。Even when a soft adhesive is used, infiltration of impurities, gases, etc. from the outside is prevented, and leakage of liquid crystal from inside the hill is also reduced. Second, in the case of the present invention, since the liquid crystal 4' is filled in the gap formed between the seal layer 5 and the seal WJ6, the seal part is closed as described above. The effect of preventing infiltration of impurities and gases from the outside and the effect of preventing liquid crystal leakage from inside the cell are -.
It becomes a higher level. Furthermore, if liquid crystal is not sealed between the sealing layers 5 and 6, the seal WI5 can be sealed by heating.
In some cases, the air existing in the gap between the seal layers 5 and 6 expands and enters the inside of the seal, but in the case of the present invention, since liquid crystal is filled between the seal layers 5 and 6, this does not occur. No inconvenience will occur.
本発明において、透明基板１，１′はＪｊ［々の透明体
から構成されるが、この場合の透明ノル板としては、プ
ラスチックフィルムの使用がりｒまり、＜、例えば、ポ
リブチレンチレフタレー１へ、ポリブチレンチレフタレ
−１−等のポリエステルの他、エポキシ樹脂、フェノー
ル樹脂、ポリイミ１く、ポリカーボネー１〜、ボリン、
ルホン、ポリエーテルスルホン、ポリエーテルイミド、
アセチルセルロース、ポリアミノ酸エステル、芳香族ポ
リアミ（へ等の耐Ｓ：！へ性樹脂、ポリスチレン、ポリ
アクリル酸エステル、ポリメタクリル酸エステル、ポリ
アクリルアミド、ポリエチレン、ポリプロピレン等のビ
ニル系ポリマー、ポリフッ化ビニリデン等の含フン、（
（樹脂及びそれらの変性体等から形成されたフィル１１
力弓（げられる。これらのプラスチックフィル１１の中
、特にポリエステルフィルムの使用がりＩましい。また
、本発明の原理はガラス基板を用いる液晶表示素子にも
ｆ応し／１するものて、基板１，１′ の少なくとも方
をガラスノ１（板に置換することもてきる。In the present invention, the transparent substrates 1 and 1' are composed of transparent bodies, and in this case, a plastic film may be used as the transparent plate. In addition to polyesters such as polybutylene terephthalate, epoxy resins, phenol resins, polyimides, polycarbonates, borine,
sulfone, polyether sulfone, polyetherimide,
Acetyl cellulose, polyamino acid esters, aromatic polyamides (S:!) resistance resins, polystyrene, polyacrylic esters, polymethacrylic esters, polyacrylamide, vinyl polymers such as polyethylene, polypropylene, polyvinylidene fluoride, etc. Contains feces, (
(Fill 11 formed from resin and modified products thereof, etc.)
Among these plastic films 11, it is particularly preferable to use a polyester film.Furthermore, the principle of the present invention also applies to liquid crystal display elements using glass substrates. It is also possible to replace at least one of 1 and 1' with a glass plate.
本発明において、シールＲ’ｌ ５ 、６は従来公知の
種々の接着剤から構成することができ、このような接、
７１剤としては１例えば、エポキシ系（チッソｔａ製、
１．１ｘｏｎ口ｏｒ＋ｄ ｌ ００４ Ｍ）、ウレタン
系（三洋化成曲製、ＵＮＩＩＩＯＮシリース等）、熱溶
融型ポリエステル系（富」、フィル１１礼製、スタフィ
ックスＦ−ＬＣ１ロ木マタイ社製、１１１１４１ ：ｌ
６ｔ／；； ）、アクリル系（ソニーケミカル社製、
］！ＩＡ−１０等）、シリコーン系（東しシリコーン礼
製、５１４−１７００等）等を一般的に挙げることがて
き、さらに、ネオブレン系、イソプレン系等のゴム系接
着剤も使用可能である。本発明においては、プラスチッ
クフィル１１、特にポリエステルフィル１１に対する接
着性、耐液晶性、スクリーン印刷性等の点ではシリコー
ン系接着剤の使用が有利である。In the present invention, the seals R'l 5 and 6 can be made of various conventionally known adhesives, and such adhesives,
71 agent, for example, epoxy type (manufactured by Chisso TA,
1.1xon mouth or + d l 004 M), urethane type (manufactured by Sanyo Kaseikyoku, UNIIIION series, etc.), heat-melting polyester type (Tomi, manufactured by Phil 11 Rei, Stafix F-LC1 manufactured by Roki Matai Co., Ltd., 111141: l
6t/;; ), acrylic (manufactured by Sony Chemical,
]! IA-10, etc.), silicone-based adhesives (Toshi Silicon Rei Co., Ltd., 514-1700, etc.), etc., and rubber-based adhesives such as neoprene-based and isoprene-based adhesives can also be used. In the present invention, it is advantageous to use a silicone adhesive in terms of adhesion to the plastic film 11, especially the polyester film 11, liquid crystal resistance, screen printability, and the like.
前記シリコーン系接着剤としては、従来公知のものを用
いることができる。このようなシリコーン系接着剤は、
ケイ素樹脂、即ち、分子−中に、式を有するポリマーで
、一般に、シリコン樹脂と呼ばれ、中独重合体の他、共
重合体、変性体、プレポリマー等が包含さオしる。また
、このシリコーン分子中にはエポキシ基、アミノ基等の
活性基を含有することができる。より具体的には、分子
−中に次式
を有するポリジメチルシロキサン（市販品としては「ダ
ウコーニング２００ｊ、「ゼネラルエレクトリック５Ｆ
６９、Ｓ Ｆ９６．５Ｓ４１．０７Ｊ、「東しシリコン
Ｓ１三１７００Ｊ等がある）及び分子中に次式
を有するポリメチルフェニルシロキサン（市販品として
は、［セネラルエレクトリック５Ｆ１０２３、Ｓｌ・’
５Ｒ８２、Ｓ旧１２」等がある）などが挙げられ、更に
分子・中にメチル基、フェニル基以外の官能基を導入し
たポリマーも使用できる。このようなポリマーとしては
、水酸基を導入したポリマー（市販品としては「ゼネラ
ルエレクトリック５Ｒ−１１３、ＳＲ−１７４」がある
）、アルコキシ基を導入したポリマー（市販品としては
、「ゼネラルエレクトリックＳ旧９１」が皮ンる）、シ
ラノールコル（−５ｉ （ｉｌｌ）を導入したポリマー
（市販品としては「ダウコーニング：ｌ ４０ Ｊかあ
る）、アルキド基を導入したポリマー（市販品としては
「タウコーニングシルキッド５０」がある）、−Ｓ 、
； −ＩＩ Ｊ、ｌｉを導入したポリマー（市販品とし
では、「東しシリコン５ＩＥ１７００Ｊがある）等が挙
げられる１、その他ソテイウｌ＼メチルシリコネー１−
や、エポキシ基を有するポリマーやフロロシリコーンも
使用できる。As the silicone adhesive, conventionally known adhesives can be used. These silicone adhesives are
Silicone resin, that is, a polymer having a formula in its molecule, is generally called silicone resin, and includes not only Sino-German polymers, but also copolymers, modified products, prepolymers, etc. Further, this silicone molecule may contain active groups such as epoxy groups and amino groups. More specifically, polydimethylsiloxane having the following formula in the molecule (commercially available products include "Dow Corning 200j", "General Electric 5F
69, SF96.5S41.07J, "Toshi Silicon S131700J, etc." and polymethylphenylsiloxane having the following formula in the molecule (commercially available products include [General Electric 5F1023, Sl.'
5R82, S old 12'', etc.), and polymers having functional groups other than methyl and phenyl groups introduced into the molecule can also be used. Examples of such polymers include polymers with hydroxyl groups introduced (commercially available products include "General Electric 5R-113 and SR-174") and polymers with alkoxy groups introduced (commercial products include "General Electric S Old 91"). ''), polymers with silanolcol (-5i (ill) introduced (commercially available products include Dow Corning's L 40 J), polymers with alkyd groups introduced (commercially available products include Tau Corning Sil), Kid 50"), -S,
-II J, li-introduced polymers (commercially available products include "Toshi Silicone 5IE1700J") etc. 1, and others such as Soteil\Methyl Silicone 1-
Additionally, polymers having epoxy groups and fluorosilicone can also be used.
−上述のようなシロキサン結合を有する反応硬化型ポリ
マーをそのまま、Ｉ！ｌｉ：いは−５，１−ＩＩ塞を導
入したポリマーを硬化剤として併用したり、また白金酸
塩等の金属酸塩を反応促進剤として添、加したり、シリ
カゲルや酸化チタン等の金属酸化物を着色や粘度調整や
その他の特性致着の目的で添加したり、上述のポリマー
の異種をブレンドしたり、共重合構造にしたりして、本
発明に才９ける接着剤として使用される。なお、実際の
使用に際しては、ポリマーの種類により１液自己架橋型
としてもよく、また２液温合型として使用しても良い。- Using the reaction-curable polymer having a siloxane bond as described above, I! li: or -5,1-II polymers introduced as curing agents, metal salts such as platinates as reaction accelerators, and metals such as silica gel and titanium oxide. It can be used as an adhesive according to the present invention by adding oxides for the purpose of coloring, adjusting viscosity, or matching other properties, blending different kinds of the above-mentioned polymers, or creating a copolymer structure. . In actual use, depending on the type of polymer, it may be a one-part self-crosslinking type or a two-part warming type.
本発明において、シール層５，６の幅は０．５〜Ｉ Ｏ
ｍ ＋ｕ程度であるが、表示面積を考慮すると、０５〜
：（Ｉｌｌ Ｉｌｌの範囲にするのが特に好ましい。シ
ールＪｊｌＪ ５とシール層６との間隔は、０．５〜１
０ｍｍ、好ましくは１〜５ｍｍであり、この間隔が余り
狭くなると接着剤Ｘ’＋ ｌ＋’１志がシール時に短絡
して液晶か充填できなカビ）ノ一りし、一方、この間隔
が余り広すさると、表出面積を損なうようになる。In the present invention, the width of the sealing layers 5 and 6 is 0.5 to IO
It is about m + u, but considering the display area, 05~
:(It is particularly preferable that the range is Ill Ill. The distance between the seal JjlJ 5 and the seal layer 6 is 0.5 to 1
0 mm, preferably 1 to 5 mm; if this gap is too narrow, the adhesive X'+l+'1 will short-circuit during sealing, resulting in liquid crystal filling (mold); on the other hand, if this gap is too wide, If you let it sit, you will lose the surface area.
本発明においては種々の変更がｉｊｆ能であり、１９す
えば、シール部は、第１図のように２つのソールＪ−・
１から構成されるものに限定する必要はなく１．腓１以
１ｔにすることにより、さらに信頼性の向上した製品を
１１することかできる。また、各シール層のシール手段
としては、Ｏη記のような接着剤により実施し得る他、
熱溶着、超音波溶着等のシール手段を用いることができ
る。さらに、複数のシール層を接着剤により形成する場
合、それら接着剤としては、同種又は異種のものを使用
し得るが、本発明の場合、複数シール層の少なくとも１
つはシリコーン系接着剤で形成するのが耐衝撃性の上で
好ましい。シール層の組合せの具体例を示すと、例えば
、シール部が２つのシール層から構成される場合、熱溶
融型ポリエステルシール層／シリコーン系シール層、超
音波溶着シール層／シリコーンシール層、エポキシ系シ
ール層／シリコーン系シール層、シリコーン系シール層
／シリコーン系シール層、ウレタン系シール層／シリコ
ーン系シール層等がある。Various modifications are possible in the present invention, for example, the seal portion may be formed by forming two soles as shown in FIG.
There is no need to limit it to one consisting of 1. By increasing the weight from 1 ton to 1 ton, it is possible to create a product with even greater reliability. In addition, as a sealing means for each sealing layer, adhesives such as Oη can be used.
Sealing means such as thermal welding and ultrasonic welding can be used. Furthermore, when the plurality of sealing layers are formed with adhesives, the same or different types of adhesives can be used, but in the case of the present invention, at least one of the plurality of sealing layers
In terms of impact resistance, it is preferable to use a silicone adhesive. Specific examples of combinations of sealing layers include, for example, when the sealing part is composed of two sealing layers, heat-melting polyester sealing layer/silicone sealing layer, ultrasonic welding sealing layer/silicone sealing layer, epoxy sealing layer, etc. There are seal layers/silicone seal layers, silicone seal layers/silicone seal layers, urethane seal layers/silicone seal layers, and the like.
本発明の液晶表示素子は、従来公知の方法により製造で
きる。例えば、同一種類の接着剤を用いて複数シール層
を形成する場合、配向処理の施されだ基板に、スクリー
ン印刷等の方θ；によりＩ”Ｆ ：ｉ’１剤を所定形状
に塗布した後、」−１ζノ、（扱を；３へ：ＩＯ７Ｊｎ
１のスペーサを介して貼合仕る。この時、シール層間空
隙部の液晶充填用量［１部を、基板１，１部間に形成さ
れた表示セル内に対する液晶充」近用間１１部と同一部
又は近傍部に設けておくと、通９；（行われている真空
封入法により、表示セル内とシール層間空隙部の両方に
同１１．！ｌに液晶に注入充填することがてき、シール
層間空隙部に対する液晶充填１．稈を特別に設ける必要
はない。また、１１シ晶？ごシーニル層空隙部及び表示
セル内に充填するための開１１ｊＸＩＸ（液晶注入口）
の封止は、接着剤によるモール１−や、溶着等の任意の
方法で行うことができる。The liquid crystal display element of the present invention can be manufactured by a conventionally known method. For example, when forming multiple sealing layers using the same type of adhesive, after applying the I"F:i'1 agent in a predetermined shape by screen printing etc. on the substrate that has undergone orientation treatment, , "-1ζノ, (handle; to 3: IO7Jn
They are bonded via a spacer of 1. At this time, if the liquid crystal filling amount [1 part] of the gap between the seal layers is provided in the same part as the liquid crystal filling part 11 in the display cell formed between the substrate 1 and the 1 part, or in a nearby part, (Due to the currently used vacuum sealing method, it is possible to inject and fill liquid crystal into both the display cell and the gap between the seal layers at the same time. There is no need to provide a special opening.In addition, there is an opening 11jXIX (liquid crystal injection port) for filling the voids in the crystal layer and the display cells.
The sealing can be performed by any method such as molding with adhesive or welding.
本発明の液晶表示素子はｒ＋：ｉ記の構成であ−）で、
プラスチック基板を用いる液晶表示素ｒ−の欠点てあっ
た信頼性」二の問題、特に、耐高４．！性、耐高Ｗ１’
７Ｌ高湿性において著しく改良されたものてあり、例え
ば、温度８０℃、相対湿度９０％の使用ｇ１境に１）充
分耐え得るものである。The liquid crystal display element of the present invention has the configuration of r+:i-),
Liquid crystal display elements using plastic substrates had drawbacks such as reliability, especially high durability. ! resistance, high resistance W1'
7L is significantly improved in high humidity, for example, 1) can sufficiently withstand use at a temperature of 80° C. and a relative humidity of 90%.
次に本発明を実施例によりさらに詳細に説明する。 Next, the present invention will be explained in more detail with reference to Examples.
実施例１
透明導電膜イ」き１軸延伸ポリエステルフイルムにホ１
−リソグラフィーによる所定の電極を形成後、有機チタ
ネー１−、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５Ｅ−１７００を第１図の形状に
スクリーン印刷した。同様に配向処理を処した基板と、
前記基板とを粒径１０μｍの高分子粒子スペーサーを介
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第１図に示した構造の空セル
を作製した。次いで、１に、Ｍｅｒｃｋ社製自動車用液
晶ＺＬＩ−１５６５を表示セル部とシール層空隙部内の
両方に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６０℃、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、閾値電圧、コンＩ・ラスト比、消費電
流、応答促進等の電−（光学性（’１も、初期値変動±
２０％以内と極めて高いイ１１頼（’ｌを示した。さら
に厳しい８０°（二、相対湿度９（）％の１１゛１百１
．１Ｘ高湿試験においても、５００時間以ｊ−にわたっ
て１１視外観不良を発生せイ、電気光学１、冒イ１も、
初期イ１１°１変動２０％以内という極めて高い信頼性
を示した、。Example 1 A transparent conductive film was formed on a uniaxially stretched polyester film.
- After forming a predetermined electrode by lithography, an alignment film made of organic titanium 1-, epoxy, and nylon is formed and rubbed. On this substrate, a silicone adhesive 5E-1700 manufactured by Toshi Silicone Co., Ltd. was screen printed in the shape shown in FIG. A substrate that has been similarly subjected to orientation treatment,
The substrate was bonded to the substrate through a polymer particle spacer with a particle size of 10 μm so that the orientation axes were perpendicular to each other, and the mixture was heated at 150° C.
By heating for 1 hour, an empty cell having the structure shown in FIG. 1 was produced. Next, in step 1, Merck's automotive liquid crystal ZLI-1565 was sealed in both the display cell part and the seal layer cavity by a vacuum sealing method, and the sealing opening was sealed by ultrasonic welding to form a twisted nematic type. A liquid crystal display element was manufactured. This liquid crystal display element did not show any visual appearance defects such as alignment deterioration in a high temperature storage test at 60°C for 1000 hours, and exhibited electrical properties (optical properties) such as threshold voltage, contrast I/last ratio, current consumption, and response acceleration. 1, initial value fluctuation ±
It showed an extremely high temperature within 20%. An even more severe temperature of 80° (2, 11°101 with a relative humidity of 9%) was shown.
．． Even in the 1X high humidity test, 11 visual appearance defects occurred for more than 500 hours.
It showed extremely high reliability with an initial variation of 11 degrees within 20%.
次に、８０°Ｃ１相対湿度９０％の条件で５００時間エ
ージングした後の液晶表示素子の特性値を初期特性値と
の比率で示す。Next, the characteristic values of the liquid crystal display element after aging for 500 hours at 80° C. and 90% relative humidity are shown as a ratio to the initial characteristic values.
（１）閾値電圧 ：１．．０５
（２）飽和電圧 ： １．１２
（３）コン１〜ラスト比： ０．り１
（４）消費電流 ＝１０５
（５）立」ニリ時間：］、Ｉ：１
（６）立下り時間：］、］５
実施例２
実施例１と同様にして第１図に示ず４’ｌｔ造の７戊品
表示素子を作製した。但し、この場合、外周のシール層
５は、ポリエステル系接着剤（セメダイン社製、ＸＡ１
０３１）を用い、内方シーＪｖｊＭＧハ、シリコーン系
接着剤（東しシリコーン社製、５Ｅ−１７００）を用い
てそれぞれ形成した。(1) Threshold voltage: 1. ．． 05 (2) Saturation voltage: 1.12 (3) Con1 to last ratio: 0. 1 (4) Current consumption = 105 (5) Standing time: ], I:1 (6) Falling time: ], ]5 Example 2 In the same manner as Example 1, 4 (not shown in FIG. 1) A 7-piece display device was manufactured. However, in this case, the outer seal layer 5 is made of polyester adhesive (manufactured by Cemedine, XA1
031), an inner seam JvjMG, and a silicone adhesive (manufactured by Toshi Silicone Co., Ltd., 5E-1700).
このようにして得られた液晶表示素子は、８０℃、相対
湿度９０％の条件で１０００時間の高温高湿試験に才昌
１て、配向劣化等の目視外観不良を全く示さず、電気光
学特性も初期値変動２０％以内であった。次に、８０℃
、相対湿度９０％の条件下、１０００時間ニーシンク後
の特性値を初期特性値との比ｔ′！ｔ（を次に示す。The liquid crystal display element obtained in this manner showed no visual appearance defects such as alignment deterioration at all after being subjected to a 1000-hour high-temperature and high-humidity test at 80°C and 90% relative humidity, and had no electro-optic properties. The initial value fluctuation was also within 20%. Next, 80℃
, the ratio of the characteristic value after knee sinking for 1000 hours to the initial characteristic value under the condition of 90% relative humidity t'! t( is shown below.
（１）閾値電圧 ： １．０２
（２）飽和電圧 ：］、１０
（３）コン１ヘラスト比 ： ０．９５（４）消費電流
： １．０２
（５）立−ヒリ時間 ：］、、１３
（６）立下り時間 ： １．１１
比較例１
実施例１において、シリコーン系接着剤ＳＥ −１７０
０を第２図のように印刷し、同様にして液晶表示素子を
作製した。この液晶表示素子は、６０℃。(1) Threshold voltage: 1.02 (2) Saturation voltage: ], 10 (3) Con1 Herasto ratio: 0.95 (4) Current consumption: 1.02 (5) Stand-up time: ], 13 (6) Fall time: 1.11 Comparative example 1 In Example 1, silicone adhesive SE-170
0 was printed as shown in FIG. 2, and a liquid crystal display element was produced in the same manner. The temperature of this liquid crystal display element is 60°C.
１０００時間の高温保存試験には耐えるものの８０ ”
Ｃの高温保存試験においては約１００時間て配向劣化を
生じ液晶表示素子としての機能をＨさなくな−）でしま
った。Although it can withstand 1000 hours of high temperature storage test,
In a high temperature storage test of C, the alignment deteriorated after about 100 hours and the function as a liquid crystal display element was lost (-).
比較例２
実施例１において、シール層間の空隙部にｔｉ′／、品
を充填しない以外は同様にして液晶表示；）、、’、ｆ
をイ１製した。この液晶表示素子は、６０ ℃、１００
０１１冒１１１の高温保存試験には耐えるが、８０°Ｃ
の高１ｏ’＋保存試ｊ１り７においては、約３００時間
で配向劣化及び気泡のｌジ入を生した。Comparative Example 2 A liquid crystal display was produced in the same manner as in Example 1 except that the gap between the seal layers was not filled with ti'/,
I made one. This liquid crystal display element is heated at 60°C and 100°C.
It can withstand the high temperature storage test of 011-111, but at 80°C
In the high 1o' + storage trial 7, alignment deterioration and bubble formation occurred in about 300 hours.
第１図（Ｆｌ）及び（１））は本発明による液晶表示素
ｒ−の平面図及び側面断面図、第２図（９〕）及び（＋
１）ＩＪ’、に来の液晶表示素子の平面図及び側面断面
１ノ１である。。
図中、ｊ、１′は基板、２，２′は透明ノＩＫ電ＩＩう
′１、：３．；げは配向ｎｃｒ、 ７Ｉ、ｃは液晶、５
．６はシー ルｆｐ７ 、。
特許出Ｎｉ人 株式会社 リ コ −
代理人弁理士池浦ｆす２明
第 １ 図（ａ）
第 ２ 図（ａ）
第 １ 図（ｂ）
第 ２ 図（ｂ）FIGS. 1 (Fl) and (1)) are a plan view and a side sectional view of a liquid crystal display element r- according to the present invention, and FIGS. 2 (9) and (+
1) IJ', a plan view and side cross section of a conventional liquid crystal display element. . In the figure, j and 1' are substrates, and 2 and 2' are transparent IK electrodes. ; ridge is orientation ncr, 7I, c is liquid crystal, 5
．． 6 is the seal fp7. Patent issuer Ricoh Co., Ltd. - Attorney Patent Attorney Ikeura F.S. Figure 1 (a) Figure 2 (a) Figure 1 (b) Figure 2 (b)
Claims (3)
ルして重合し、載板間に液晶を封入した液晶表示素子に
おいて、前記シール部を、複数のシール層により構成し
、かつ前記複数のシール層の間の空隙部に対して液晶を
封入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 transparent substrates forming electrodes are polymerized with their outer peripheries sealed and liquid crystal is sealed between the plates, the sealing portion is constituted by a plurality of sealing layers, and the plurality of A liquid crystal display element characterized in that a liquid crystal is sealed in a gap between sealing layers.
ク基板である特ｎ′Ｉ″請求の範囲第１項の液晶表示素
子。(2) The liquid crystal display element according to claim 1, wherein at least one of the transparent substrates is a transparent plastic substrate.
有するポリマーを主成物とする接着剤層により構成され
ている特許請求の範囲第１項の液晶表示素子。(3) The liquid crystal display element according to claim 1, wherein at least one of the sealing layers is constituted by an adhesive layer mainly composed of a polymer having a siloxane bond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP321684A JPS60146228A (en) | 1984-01-10 | 1984-01-10 | Liquid crystal display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP321684A JPS60146228A (en) | 1984-01-10 | 1984-01-10 | Liquid crystal display element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60146228A true JPS60146228A (en) | 1985-08-01 |
Family
ID=11551240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP321684A Pending JPS60146228A (en) | 1984-01-10 | 1984-01-10 | Liquid crystal display element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60146228A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4994556A (en) * | 1985-09-18 | 1991-02-19 | Kabushiki Kaisha Hayashibara Seibutsu Kagaku | Novel lymphokine and its production and uses |
| JPH05289090A (en) * | 1992-02-21 | 1993-11-05 | Samsung Electron Co Ltd | Seal pattern for liquid crystal display device |
| JPH0980449A (en) * | 1995-07-10 | 1997-03-28 | Sanyo Electric Co Ltd | Display device and manufacture for liquid crystal display device |
| US5621553A (en) * | 1994-12-15 | 1997-04-15 | Sharp Kabushiki Kaisha | Liquid crystal display device with polymer wall formation rate in peripheral region of display section at least 90% |
| US6204906B1 (en) * | 1999-03-22 | 2001-03-20 | Lawrence E. Tannas, Jr. | Methods of customizing the physical size and shape of commercial off-the-shelf (COTS) electronic displays |
| US6377327B1 (en) * | 1997-02-13 | 2002-04-23 | U.S. Philips Corporation | Optical switching element |
| US7002660B2 (en) | 1997-10-15 | 2006-02-21 | Bae Systems Plc | Liquid crystal displays |
| US7780492B2 (en) | 2004-09-02 | 2010-08-24 | Tannas Jr Lawrence E | Apparatus and methods for resizing electronic displays |
| US7938051B2 (en) | 2004-05-21 | 2011-05-10 | Tannas Lawrence E | Apparatus and methods for cutting electronic displays during resizing |
| US8259282B2 (en) | 2010-05-17 | 2012-09-04 | Tannas Jr Lawrence E | Method of repairing short or potential short circuits during resizing of an electronic flat panel display |
| US8804090B2 (en) | 2010-12-02 | 2014-08-12 | Lawrence E. Tannas, Jr. | Methods for creating a minimally visible seal along the edge of a flat panel display |
| US8864541B2 (en) | 2011-11-04 | 2014-10-21 | Lawrence E. Tannas, Jr. | Apparatus and methods for resealing resized electronic displays |
| CN106537240A (en) * | 2014-12-04 | 2017-03-22 | 积水化学工业株式会社 | Silicone particles, sealing agent for liquid crystal dropping methods, and liquid crystal display element |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57171319A (en) * | 1981-04-15 | 1982-10-21 | Hitachi Ltd | Liquid crystal display element |
| JPS57181527A (en) * | 1981-05-01 | 1982-11-09 | Ricoh Co Ltd | Liquid crystal display device |
-
1984
- 1984-01-10 JP JP321684A patent/JPS60146228A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57171319A (en) * | 1981-04-15 | 1982-10-21 | Hitachi Ltd | Liquid crystal display element |
| JPS57181527A (en) * | 1981-05-01 | 1982-11-09 | Ricoh Co Ltd | Liquid crystal display device |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4994556A (en) * | 1985-09-18 | 1991-02-19 | Kabushiki Kaisha Hayashibara Seibutsu Kagaku | Novel lymphokine and its production and uses |
| JPH05289090A (en) * | 1992-02-21 | 1993-11-05 | Samsung Electron Co Ltd | Seal pattern for liquid crystal display device |
| US5335103A (en) * | 1992-02-21 | 1994-08-02 | Samsung Electronics Co., Ltd. | Double seal pattern for a liquid crystal device with curved ends |
| US5621553A (en) * | 1994-12-15 | 1997-04-15 | Sharp Kabushiki Kaisha | Liquid crystal display device with polymer wall formation rate in peripheral region of display section at least 90% |
| JPH0980449A (en) * | 1995-07-10 | 1997-03-28 | Sanyo Electric Co Ltd | Display device and manufacture for liquid crystal display device |
| US6377327B1 (en) * | 1997-02-13 | 2002-04-23 | U.S. Philips Corporation | Optical switching element |
| US7002660B2 (en) | 1997-10-15 | 2006-02-21 | Bae Systems Plc | Liquid crystal displays |
| US7397529B1 (en) | 1997-10-15 | 2008-07-08 | Bae Systems Plc | Liquid crystal displays |
| US7525633B2 (en) | 1999-03-22 | 2009-04-28 | Tannas Jr Lawrence E | Methods of customizing the physical size and shape of commercial off-the-shelf (COTS) electronic displays |
| US8792076B2 (en) | 1999-03-22 | 2014-07-29 | Lawrence E. Tannas, Jr. | Customized electronic displays and methods of customizing the physical size and/or shape thereof |
| US6204906B1 (en) * | 1999-03-22 | 2001-03-20 | Lawrence E. Tannas, Jr. | Methods of customizing the physical size and shape of commercial off-the-shelf (COTS) electronic displays |
| US7535547B2 (en) | 1999-03-22 | 2009-05-19 | Tannas Jr Lawrence E | Customized electronic display and methods of customizing the physical size and/or shape thereof |
| US6380999B1 (en) | 1999-03-22 | 2002-04-30 | Lawrence E. Tannas, Jr. | Methods of customizing the physical size and shape of commercial off-the-shelf (COTS) electronic displays |
| US8068206B2 (en) | 1999-03-22 | 2011-11-29 | Tannas Jr Lawrence E | Customized electronic displays and methods of customizing the physical size and/or shape thereof |
| US7938051B2 (en) | 2004-05-21 | 2011-05-10 | Tannas Lawrence E | Apparatus and methods for cutting electronic displays during resizing |
| US7780492B2 (en) | 2004-09-02 | 2010-08-24 | Tannas Jr Lawrence E | Apparatus and methods for resizing electronic displays |
| US8636556B2 (en) | 2004-09-02 | 2014-01-28 | Lawrence E. Tannas, Jr. | Apparatus and methods for resizing electronic displays |
| US8235761B2 (en) | 2004-09-02 | 2012-08-07 | Tannas Jr Lawrence E | Apparatus and methods for resizing electronic displays |
| US8259282B2 (en) | 2010-05-17 | 2012-09-04 | Tannas Jr Lawrence E | Method of repairing short or potential short circuits during resizing of an electronic flat panel display |
| US8804090B2 (en) | 2010-12-02 | 2014-08-12 | Lawrence E. Tannas, Jr. | Methods for creating a minimally visible seal along the edge of a flat panel display |
| US8864541B2 (en) | 2011-11-04 | 2014-10-21 | Lawrence E. Tannas, Jr. | Apparatus and methods for resealing resized electronic displays |
| CN106537240A (en) * | 2014-12-04 | 2017-03-22 | 积水化学工业株式会社 | Silicone particles, sealing agent for liquid crystal dropping methods, and liquid crystal display element |
| CN106537240B (en) * | 2014-12-04 | 2020-11-13 | 积水化学工业株式会社 | Polysiloxane particles, sealant for liquid crystal dropping process, and liquid crystal display element |
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