JPH0695132A - Liquid crystal display device and manufacturing method thereof - Google Patents
Liquid crystal display device and manufacturing method thereofInfo
- Publication number
- JPH0695132A JPH0695132A JP3330069A JP33006991A JPH0695132A JP H0695132 A JPH0695132 A JP H0695132A JP 3330069 A JP3330069 A JP 3330069A JP 33006991 A JP33006991 A JP 33006991A JP H0695132 A JPH0695132 A JP H0695132A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- injection port
- polarizing plate
- plastic film
- crystal display
- 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.)
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Abstract
(57)【要約】
【目的】 液晶注入口周辺の接合を強化することによ
り、外部の圧力や衝撃に耐えうる信頼性の高い液晶表示
素子を得る。
【構成】 透明電極と配向膜とを備えた一対のプラスチ
ックフィルム基板３１，３２を所定の間隔をもって対向
させ、周辺部をシールして内部に液晶３４を封入し、一
対の偏光板３６，３７で挟持された液晶表示素子におい
て、前記プラスチックフィルム基板３１，３２の少なく
とも一方より内部の液晶３４に通ずる液晶注入口が形成
され、該液晶注入口を封止した封止剤３３と前記偏光板
とが接着されてなることを特徴としている。
(57) [Abstract] [Purpose] To obtain a highly reliable liquid crystal display element capable of withstanding external pressure and impact by strengthening the bonding around the liquid crystal injection port. [Structure] A pair of plastic film substrates 31 and 32 having transparent electrodes and an alignment film are opposed to each other with a predetermined gap, and a liquid crystal 34 is sealed inside by sealing a peripheral portion. In the sandwiched liquid crystal display element, at least one of the plastic film substrates 31 and 32 has a liquid crystal injection port communicating with the internal liquid crystal 34, and the sealing agent 33 sealing the liquid crystal injection port and the polarizing plate It is characterized by being bonded.
Description
【０００１】[0001]
【産業上の利用分野】本発明は液晶表示素子及びその製
造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】図８にプラスチックフィルムを基板とし
て用いた従来の液晶表示素子の一例を示した。上基板１
２側に丸穴を設け、液晶注入口としている。該液晶注入
口を封止する封止剤１４は図８のＡ−Ａ’断面図である
図９に示すような状態で硬化を行ない、液晶注入口の封
止をしていた。また、他に図１０に示すように、端面部
に注入口を配置した例もある。2. Description of the Related Art FIG. 8 shows an example of a conventional liquid crystal display device using a plastic film as a substrate. Upper substrate 1
A round hole is provided on the second side to serve as a liquid crystal inlet. The sealant 14 for sealing the liquid crystal injection port was cured in the state shown in FIG. 9 which is a cross-sectional view taken along the line AA 'of FIG. 8 to seal the liquid crystal injection port. In addition, as shown in FIG. 10, there is also an example in which an injection port is arranged on the end face portion.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら前記に示
す従来技術の前者の例では表示有効エリアに対して、注
入口部による非表示エリアが大きく、パネル全体が大型
化してしまう。また、封止剤の突部に偏光板を重ねる
と、偏光板の基板からの浮きが生じるため、この部分の
外観が著しく劣化するし、また、浮き部への水分の侵入
等による信頼性の低下をまねくという問題点がある。However, in the former example of the prior art described above, the non-display area by the injection port is large with respect to the display effective area, and the entire panel becomes large. If a polarizing plate is placed on the protrusion of the encapsulant, floating of the polarizing plate from the substrate will occur, and the appearance of this part will be significantly deteriorated. There is a problem that it causes a decline.
【０００４】他方、後者の例では有効エリアに対する非
表示エリアは小さく出来る。しかし図１１に示すように
封止剤２５の上基板２２へのはみ出し部を逃げて偏光板
２３を貼付する必要が生じ、有効表示領域が制限されて
しまうという問題点がある。On the other hand, in the latter example, the non-display area can be made smaller than the effective area. However, as shown in FIG. 11, it is necessary to escape the protruding portion of the sealant 25 to the upper substrate 22 and to attach the polarizing plate 23, which limits the effective display area.
【０００５】そして、前記に示した２つの従来例におい
て、偏光板端部が上下基板を接着しているシール剤が存
在する部分にまで（特に注入口が設置されているパネル
の一辺で）貼付することができなくなり、このため、偏
光板端部のそり等が上下基板間の厚みを変化させてしま
いセル厚ムラが発生してしまう（プラスチックフィルム
基板に特有の問題）という点と、さらに、封止剤が硬化
後、注入口部での封止剤のはみ出し部分は外部からの衝
撃に弱く、ひび割れが生じたり、最悪の場合、封止剤が
脱落してしまうという点の共通の問題点があった。In the above-mentioned two conventional examples, the polarizing plate ends are adhered even to the part where the sealant that adheres the upper and lower substrates is present (particularly on one side of the panel where the injection port is installed). Therefore, the warpage of the polarizing plate edge changes the thickness between the upper and lower substrates, resulting in uneven cell thickness (a problem peculiar to plastic film substrates). A common problem that after the encapsulant is cured, the protruding part of the encapsulant at the injection port is vulnerable to external impact, causing cracks, and in the worst case, the encapsulant falls off. was there.
【０００６】[0006]
【課題を解決するための手段】本発明の液晶表示は、透
明電極と配向膜とを備えた一対のプラスチックフィルム
基板を所定の間隔をもって対向させ、周辺部をシールし
て内部に液晶を封止し、一対の偏光板で挟持された液晶
表示素子において、前記プラスチックフィルム基板の少
なくとも一方より内部の液晶に通ずる液晶注入口が形成
され、該液晶注入口を封止した封止剤と前記偏光板とが
接着されてなることを特徴とするものである。In the liquid crystal display of the present invention, a pair of plastic film substrates each having a transparent electrode and an alignment film are opposed to each other with a predetermined gap, and the periphery is sealed to seal the liquid crystal inside. Then, in a liquid crystal display element sandwiched by a pair of polarizing plates, a liquid crystal injection port communicating with an internal liquid crystal is formed from at least one of the plastic film substrates, and a sealing agent sealing the liquid crystal injection port and the polarizing plate. It is characterized in that and are adhered.
【０００７】好ましくは液晶注入口を封止した封止剤と
前記偏光板との接着によりプラスチックフィルム基板と
偏光板とが接合してなるようにしても良い。[0007] Preferably, the plastic film substrate and the polarizing plate may be joined by adhering the sealing agent for sealing the liquid crystal injection port and the polarizing plate.
【０００８】また、本発明の液晶表示素子の製造方法
は、透明電極と配向膜とを備えた一対のプラスチックフ
ィルム基板を所定の間隔をもって対向させて周辺部をシ
ールし、前記プラスチックフィルム基板の少なくとも一
方より内面に通ずる液晶注入口より液晶を注入した後、
前記液晶注入口に封止剤を設置し、前記液晶注入口をお
おって偏光板を前記プラスチックフィルム基板の上に接
合することを特徴とするものである。Also, in the method for manufacturing a liquid crystal display device of the present invention, a pair of plastic film substrates having transparent electrodes and an alignment film are opposed to each other at a predetermined interval to seal the peripheral portion, and at least the plastic film substrate is at least sealed. After injecting liquid crystal from the liquid crystal injection port that leads to the inner surface from one side,
A sealant is installed in the liquid crystal inlet, and a polarizing plate is bonded to the plastic film substrate so as to cover the liquid crystal inlet.
【０００９】その他の製造方法としては、液晶注入口に
封止剤を設置し、該封止剤が硬化しない前に前記液晶注
入口をおおって偏光板をプラスチックフィルム基板の上
に設置して接合する方法、液晶注入口に熱硬化性の封止
剤を設置し、所定の温度にて所定時間の放置をし、前記
液晶注入口の外周辺に存在する液晶を洗浄して除去した
後、前記封止剤が硬化しない前に前記液晶注入口をおお
って偏光板をプラスチックフィルム基板の上に設置して
接合する方法、液晶注入口に紫外線硬化型の樹脂製の封
止剤を設置し、該封止剤に所定量の紫外線を照射して半
硬化状態にし、前記液晶注入口の外周辺に存在する液晶
を洗浄して除去した後、前記封止剤が硬化しない前に前
記液晶注入口をおおって偏光板をプラスチックフィルム
基板の上に設置し、再び前記封止剤に所定量の紫外線を
照射して硬化せしめる方法、及び封止剤が硬化しない前
に液晶注入口をおおって偏光板をプラスチックフィルム
基板の上に設置し、その後液晶表示素子を上下方向から
加圧して前記偏光板をプラスチックフィルム基板に接合
する方法がある。As another manufacturing method, a sealant is placed in the liquid crystal injection port, and a polarizing plate is placed on the plastic film substrate to cover the liquid crystal injection port and bond before the sealant is not cured. Method, a thermosetting sealant is installed in the liquid crystal injection port, left standing for a predetermined time at a predetermined temperature, and the liquid crystal existing around the outer periphery of the liquid crystal injection port is washed and removed. A method in which a polarizing plate is placed on the plastic film substrate by covering the liquid crystal injection port before the encapsulant is not cured and bonded, and an ultraviolet curing resin encapsulant is installed in the liquid crystal injection port, Irradiate the sealant with a predetermined amount of ultraviolet rays to a semi-cured state, and after cleaning and removing the liquid crystal existing around the outer periphery of the liquid crystal inlet, the liquid crystal inlet is closed before the sealant is cured. Place the polarizing plate on the plastic film substrate A method of irradiating the sealing agent with a predetermined amount of ultraviolet rays again to cure it, and before the sealing agent is not cured, a polarizing plate is placed on the plastic film substrate so as to cover the liquid crystal injection port, and then the liquid crystal display device is mounted. There is a method of bonding the polarizing plate to the plastic film substrate by applying pressure from the vertical direction.
【００１０】[0010]
【作用】本発明の液晶表示素子はプラスチックフィルム
基板の少なくとも一方より内部の液晶に通ずる液晶注入
口が形成され、該液晶注入口を封止した封止剤を前記偏
光板とが接着されてなるので外部から圧力や衝撃が加わ
っても封止剤は加圧から保護される。そして、液晶注入
口を封止した封止剤と前記偏光板との接着によりプラス
チックフィルム基板と偏光板とが接合してなるようにす
ると前記と同様の作用が一層効果的に生じる。In the liquid crystal display device of the present invention, a liquid crystal injection port that communicates with the liquid crystal inside is formed from at least one of the plastic film substrates, and a sealing agent that seals the liquid crystal injection port is adhered to the polarizing plate. Therefore, even if pressure or impact is applied from the outside, the sealant is protected from pressure. When the plastic film substrate and the polarizing plate are bonded to each other by adhering the encapsulant that seals the liquid crystal inlet and the polarizing plate, the same effect as described above is more effectively produced.
【００１２】本発明の液晶表示素子の製造方法は、透明
電極と配向膜とを備えた一対のプラスチックフィルム基
板を所定の間隔をもって対向させて周辺部をシールし、
前記プラスチックフィルム基板の少なくとも一方より内
面に通ずる液晶注入口より液晶を注入した後、前記液晶
注入口に封止剤を設置し、前記液晶注入口をおおって偏
光板を前記プラスチックフィルム基板の上に接合するの
で、液晶の封止及び偏光板の貼付を強固におこなうこと
ができる。According to the method of manufacturing a liquid crystal display element of the present invention, a pair of plastic film substrates each having a transparent electrode and an alignment film are opposed to each other at a predetermined interval to seal the peripheral portion,
After injecting a liquid crystal from a liquid crystal injection port communicating with the inner surface from at least one of the plastic film substrates, a sealant is installed in the liquid crystal injection port, and a polarizing plate is covered on the plastic film substrate to cover the liquid crystal injection port. Since they are joined together, the liquid crystal can be sealed and the polarizing plate can be firmly attached.
【００１３】そして、封止剤が硬化しない前に前記液晶
注入口をおおって偏光板をプラスチックフィルム基板の
上に設置して接合するようにすること、液晶注入口に熱
硬化性の封止剤を設置し、所定の温度にて所定時間の放
置をし、前記液晶注入口の外周辺に存在する液晶を洗浄
して除去した後、前記封止剤が硬化しない前に前記液晶
を、おおって偏光板をプラスチックフィルム基板の上に
設置して接合すること、及び液晶注入口に紫外線硬化型
の樹脂製の封止剤を設置し、該封止剤に所定量の紫外線
を照射して半硬化状態にし、前記液晶注入口の外周辺に
存在する液晶を洗浄して除去した後、前記封止剤が硬化
しない前に前記液晶注入口をおおって偏光板をプラスチ
ックフィルム基板の上に設置し、再び前記封止剤に所定
量の紫外線を照射して硬化せしめるようにすることによ
り、液晶の封止や偏光板の貼付を強固にかつ確実におこ
なうことができる。The polarizing plate is placed on the plastic film substrate so as to cover the liquid crystal injection port before the sealing agent is not cured, and the polarizing plate is bonded to the plastic film substrate. Is installed and left at a predetermined temperature for a predetermined time, and after cleaning and removing the liquid crystal existing around the outside of the liquid crystal inlet, the liquid crystal is covered before the sealant is cured. Place the polarizing plate on the plastic film substrate and bond it, and install a UV-curable resin encapsulant at the liquid crystal injection port and irradiate the encapsulant with a specified amount of UV light to semi-cure. State, after cleaning and removing the liquid crystal existing around the outside of the liquid crystal injection port, the polarizing plate is placed on the plastic film substrate to cover the liquid crystal injection port before the sealant does not harden, Irradiate the sealant again with a certain amount of ultraviolet light. By so allowed to cure Te, the sticking of the liquid crystal sealing or polarizing plate can be carried out firmly and securely.
【００１４】また、封止剤が硬化しない前に液晶注入口
をおおって偏光板をプラスチックフィルム基板の上に設
置し、その後液晶表示素子を上下方向から加圧して前記
偏光板をプラスチックフィルム基板に接合することによ
り封止剤に残留する空気層を除去しつつ接合をおこなう
ことができる。Before the encapsulant is cured, the polarizing plate is placed on the plastic film substrate by covering the liquid crystal injection port, and then the liquid crystal display device is pressed from above and below to put the polarizing plate on the plastic film substrate. By joining, the joining can be performed while removing the air layer remaining in the sealant.
【００１５】[0015]
【実施例】本発明の実施例に関し、以下に示す。 （実施例１）図１に示すように、丸穴注入口部での封止
剤３３を基板上へのもりあがりのないような量として硬
化後２液のエポキシ系接着剤にて封止し、注入口部の液
晶を洗い落とし、注入口部も含むセル端部に到るまでの
偏光板を貼りつけた。この構成により、封止部への外圧
による封止剤の脱落、ヒビわれ等が緩和され信頼性が向
上し、また、偏光板端面でのセル厚ムラが防止された。EXAMPLES Examples of the present invention will be described below. (Embodiment 1) As shown in FIG. 1, the amount of the sealing agent 33 at the round hole injection port is set so as not to rise on the substrate, and after curing, sealing is performed with a two-component epoxy adhesive, The liquid crystal at the inlet was washed off, and a polarizing plate was attached up to the cell end including the inlet. With this configuration, the sealing agent is prevented from falling off and being cracked due to the external pressure applied to the sealing portion, the reliability is improved, and the uneven cell thickness on the end face of the polarizing plate is prevented.
【００１６】（実施例２）丸穴注入口部に封止剤３３
（エポキシ系接着剤）をのせ、約３０分後、半硬化状態
で図２のように付着液晶３５を洗い落とし、この封止部
上に偏光板３６を貼りつけた（図３参照）。上基板上に
わずかにはみ出していた封止剤は、いまだ半硬化状態で
流動性を有していたので、偏光板貼付ともに、薄く封入
口部付近で偏光板と上基板にサンドイッチされ、液晶表
示素子のセル厚ムラ等を発生させることなく、構成でき
た。さらに下側に偏光板を貼付、１２ｈｒ以上放置する
ことで封止剤は充分に硬化し、注入口部で上下基板と上
偏光板が封止剤で接着され、封止の信頼性が高められた
とともに前記と同様の効果が得られた。さらに、注入口
部への封止剤の量は精度を要求されないので、作業性が
良くなった。エポキシ系接着剤としてチッソ社製ＬＩＸ
ＯＮ ＢＯＮＤ １００２Ａ／Ｂを用した。(Embodiment 2) A sealant 33 is provided at the injection port of a round hole.
(Epoxy adhesive) was applied, and after about 30 minutes, the adhered liquid crystal 35 was washed off in a semi-cured state as shown in FIG. 2, and a polarizing plate 36 was attached on this sealing portion (see FIG. 3). The encapsulant, which had slightly protruded onto the upper substrate, was still in a semi-cured state and had fluidity, so when attaching the polarizing plate, it was thinly sandwiched between the polarizing plate and the upper substrate in the vicinity of the sealing opening, and the liquid crystal display The device could be constructed without causing unevenness in cell thickness of the device. Further, by attaching a polarizing plate on the lower side and leaving it for 12 hours or more, the encapsulant is sufficiently cured, and the upper and lower substrates and the upper polarizing plate are adhered to each other with the encapsulant at the injection port portion, and the sealing reliability is improved. In addition, the same effect as described above was obtained. Further, since the amount of the sealing agent to the injection port is not required to be accurate, workability is improved. LIX made by Chisso as an epoxy adhesive
ON BOND 1002A / B was used.
【００１７】（実施例３）注入口部に紫外線硬化樹脂を
のせ、所定量の紫外線の照射で半硬化状態とし、付着液
晶を洗浄後、上偏光板を貼付した。この後、下偏光板を
貼付る前に下基板側から、封止剤が充分に硬化する量の
紫外線を照射し、下偏光板を貼付し、液晶表示素子を構
成した。実施例１と同様の効果が得られるとともに、紫
外線硬化樹脂を用いることで、作業性が良く生産性が向
上した。なお、上偏光板貼付後の本硬化のための紫外線
照射は、下偏光を貼付する前でも良いし、また下偏光板
貼付後、パネル側面側からの照射でも良く、紫外線硬化
樹脂としては、 ビスフェノールＡ型エポキシ樹脂 脂環式エポキシ樹脂 光重合開始剤 シラン系添加剤 の混合物を使用した。特に下偏光板貼付後に行う時は、
偏光板貼付工程を１度で行うことが出来るので生産性が
良い。(Example 3) An ultraviolet curable resin was placed on the injection port, and a semi-cured state was obtained by irradiating a predetermined amount of ultraviolet rays. After washing the attached liquid crystal, the upper polarizing plate was attached. Thereafter, before the lower polarizing plate was attached, the lower substrate was irradiated with ultraviolet rays in an amount sufficient to cure the sealant, and the lower polarizing plate was attached to form a liquid crystal display element. The same effects as in Example 1 were obtained, and workability was good and productivity was improved by using the ultraviolet curable resin. UV irradiation for main curing after attaching the upper polarizing plate may be performed before attaching the lower polarizing plate, or after irradiation of the lower polarizing plate, may be performed from the side surface of the panel. A-type epoxy resin A mixture of alicyclic epoxy resin photopolymerization initiator and silane-based additive was used. Especially when doing after attaching the lower polarizing plate,
Productivity is good because the step of attaching the polarizing plate can be performed once.
【００１８】（実施例４）実施例２、３て示した手順と
同様にして、封止剤が半硬化状態で上下偏光板３６、３
７を貼付後、パネル全体を加圧釜に入れ乾燥空気で３ｋ
ｇｆ／ｃｍ2 の加圧を行った（図４参照）。この処理に
より、基板上部にはみ出していた接着剤と偏光板間の厚
みをより均一に出来る。また、封止剤が基板上にはみ出
している部分での偏光板のわずかな浮きによる偏光板−
基板間での空気層３８を排出できる（図５参照）。実施
例２、３と同様の効果が得られるとともに、封止部での
セル厚ムラの発生、偏光板−基板間の空気の排出によ
り、外観品質の向上歩留りの向上をはかることができ
た。(Embodiment 4) Similar to the procedure shown in Embodiments 2 and 3, the upper and lower polarizing plates 36 and 3 are sealed with the sealant in a semi-cured state.
After attaching No. 7, put the whole panel in the pressure pot and dry it with 3k.
A pressure of gf / cm 2 was applied (see FIG. 4). By this treatment, the thickness between the adhesive and the polarizing plate, which protrudes above the substrate, can be made more uniform. In addition, due to slight floating of the polarizing plate at the part where the encapsulant is protruding on the substrate,
The air layer 38 between the substrates can be discharged (see FIG. 5). The same effects as those of Examples 2 and 3 were obtained, and the appearance quality was improved and the yield was improved by generating the cell thickness unevenness in the sealing portion and discharging the air between the polarizing plate and the substrate.
【００１９】[0019]
【発明の効果】以上説明したように、本発明の液晶表示
素子は、プラスチック基板の少なくとも一方より内部の
液晶に通ずる液晶注入口が形成され、該液晶注入口を封
止した封止剤と前記偏光板とが接着されてなるので外部
から圧力や衝撃が加わっても封止部は加圧から保護され
るので脱落やヒビ割れが発生せず、信頼性が高い。そし
て、液晶注入口を封止した封止剤と前記偏光板との接着
によりプラスチックフィルム基板と偏光板とが接合して
なるようにすると前記と同様の作用及び効果が一層効果
的に生じる。また、本発明の液晶表示素子の製造方法
は、透明電極と配向膜とを備えた一対のプラスチックフ
ィルム基板を所定の間隔をもって対向させて周辺部をシ
ールし、前記プラスチックフィルム基板の少なくとも一
方より内面に通ずる液晶注入口より液晶を注入した後、
前記液晶注入口に封止剤を設置し、前記液晶注入口をお
おって偏光板を前記プラスチックフィルム基板の上に接
合するので、液晶の封止及び偏光板の貼付を強固におこ
なうことができ、信頼性の高い液晶表示素子を容易かつ
歩留り良く製造することができる。そして、封止剤が硬
化しない前に前記液晶注入口をおおって偏光板をプラス
チックフィルム基板の上に設置して接合するようにする
こと、液晶注入口に熱硬化性の封止剤を設置し、所定の
温度にて所定時間の放置をし、前記液晶注入口の外周辺
に存在する液晶を洗浄して除去した後、前記封止剤が硬
化しない前に前記液晶注入口を、おおって偏光板をプラ
スチックフィルム基板の上に設置して接合すること、及
び液晶注入口に紫外線硬化型の樹脂製の封止剤を設置
し、該封止剤に所定量の紫外線を照射して半硬化状態に
し、前記液晶注入口の外周辺に存在する液晶を洗浄して
除去した後、前記封止剤が硬化しない前に前記液晶注入
口をおおって偏光板をプラスチックフィルム基板の上に
設置し、再び前記封止剤に所定量の紫外線を照射して硬
化せしめるようにすることにより、液晶の封止や偏光板
の貼付を強固にかつ確実におこなうことができ前記と同
様の効果が得られる。また、封止剤が効果しない前に液
晶注入口をおおって偏光板をプラスチックフィルム基板
の上に設置し、その後液晶表示素子を上下方向から加圧
して前記偏光板をプラスチックフィルム基板に接合する
ことにより封止部に残留する空気層を除去しつつ接合を
おこなうことができるので、セル厚のムラがなく、信頼
性の高い液晶表示素子を容易に製造することが可能とな
る。As described above, in the liquid crystal display device of the present invention, the liquid crystal injection port communicating with the internal liquid crystal is formed from at least one of the plastic substrates, and the sealing agent sealing the liquid crystal injection port and Since it is adhered to the polarizing plate, even if external pressure or shock is applied, the sealing part is protected from pressure, so that it does not drop off or crack and is highly reliable. Then, when the plastic film substrate and the polarizing plate are bonded to each other by adhering the encapsulant that seals the liquid crystal inlet and the polarizing plate, the same action and effect as described above are more effectively produced. Further, the method for producing a liquid crystal display element of the present invention comprises a pair of plastic film substrates provided with a transparent electrode and an alignment film which are opposed to each other at a predetermined interval to seal the peripheral portion, and at least one of the plastic film substrates is provided with an inner surface After injecting liquid crystal from the liquid crystal injection port leading to
Since a sealant is installed in the liquid crystal injection port and a polarizing plate is bonded to the plastic film substrate by covering the liquid crystal injection port, liquid crystal sealing and sticking of the polarizing plate can be firmly performed. A highly reliable liquid crystal display device can be easily manufactured with a high yield. Then, the polarizing plate is placed on the plastic film substrate by covering the liquid crystal inlet before the encapsulant is not cured so that the polarizing plate is bonded, and a thermosetting encapsulant is placed in the liquid crystal inlet. After leaving the liquid crystal around the outside of the liquid crystal inlet at a predetermined temperature for a predetermined time by washing and removing the liquid crystal, the liquid crystal inlet is covered and polarized before the encapsulant is cured. The plate is placed on the plastic film substrate and bonded, and a UV-curable resin sealant is installed in the liquid crystal inlet, and the sealant is irradiated with a predetermined amount of ultraviolet light to be in a semi-cured state. After cleaning and removing the liquid crystal existing around the outside of the liquid crystal inlet, the polarizing plate is placed on the plastic film substrate by covering the liquid crystal inlet before the sealant is cured, and again. Harden the sealant by irradiating it with a certain amount of ultraviolet light. By allowed to way, the similar effect to sticking of the liquid crystal sealing or polarizing plate can be carried out firmly and reliably obtained. In addition, before the sealing agent does not work, the polarizing plate is installed on the plastic film substrate by covering the liquid crystal injection port, and then the liquid crystal display element is pressed from above and below to bond the polarizing plate to the plastic film substrate. Since bonding can be performed while removing the air layer remaining in the sealing portion, it is possible to easily manufacture a highly reliable liquid crystal display element without unevenness in cell thickness.
【図１】本発明の液晶表示素子の製造方法における液晶
注入口への封止剤の設置状態の一例を示す部分断面図で
ある。FIG. 1 is a partial cross-sectional view showing an example of a state in which a sealant is installed in a liquid crystal injection port in a method for manufacturing a liquid crystal display element of the present invention.
【図２】本発明の液晶表示素子の製造方法における液晶
注入口への封止剤の設置状態の一例を示す部分断面図で
ある。FIG. 2 is a partial cross-sectional view showing an example of a state in which a sealant is installed in a liquid crystal injection port in the method of manufacturing a liquid crystal display element of the present invention.
【図３】本発明の液晶表示素子の製造方法において、偏
光板をプラスチックフィルム基板に貼付けた状態を示す
部分断面図である。FIG. 3 is a partial cross-sectional view showing a state in which a polarizing plate is attached to a plastic film substrate in the method for manufacturing a liquid crystal display element of the present invention.
【図４】本発明の液晶表示素子の製造方法において、加
圧処理を施しつつ偏光板の貼付をおこなう工程を示す説
明図である。FIG. 4 is an explanatory view showing a step of applying a polarizing plate while applying a pressure treatment in the method for manufacturing a liquid crystal display element of the present invention.
【図５】本発明の液晶表示素子の１例を示す部分断面図
である。FIG. 5 is a partial cross-sectional view showing an example of the liquid crystal display element of the present invention.
【図６】本発明の液晶表示素子の製造方法において、加
圧処理を施しつつ偏光板の貼付をおこなう工程を示す説
明図である。FIG. 6 is an explanatory view showing a step of sticking a polarizing plate while applying a pressure treatment in the method for manufacturing a liquid crystal display element of the present invention.
【図７】本発明の液晶表示素子の１例を示す部分断面図
である。FIG. 7 is a partial cross-sectional view showing an example of a liquid crystal display element of the present invention.
【図８】従来の液晶表示素子の１例を示す斜視図であ
る。FIG. 8 is a perspective view showing an example of a conventional liquid crystal display element.
【図９】図８のＡ−Ａ' 切断断面図である。9 is a cross-sectional view taken along the line AA ′ of FIG.
【図１０】従来の液晶表示素子の他の例を示す斜視図で
ある。FIG. 10 is a perspective view showing another example of a conventional liquid crystal display element.
【図１１】図１０のＡ−Ａ’切断断面図である。11 is a cross-sectional view taken along the line A-A ′ of FIG.
３１、３２ プラスチックフィルム基板 ３３ 封止剤 ３４ 液晶 ３６、３７ 偏光板 31, 32 Plastic film substrate 33 Sealant 34 Liquid crystal 36, 37 Polarizing plate
Claims (7)
スチックフィルム基板を所定の間隔をもって対向させ、
周辺部をシールして内部に液晶を封入し、一対の偏光板
で挟持された液晶表示素子において、前記プラスチック
フィルム基板の少なくとも一方より内部の液晶に通ずる
液晶注入口が形成され、該液晶注入口を封止した封止剤
と前記偏光板とが接着されてなることを特徴とする液晶
表示素子。1. A pair of plastic film substrates provided with a transparent electrode and an alignment film are opposed to each other at a predetermined interval,
In a liquid crystal display device in which a liquid crystal is sealed inside by sealing the peripheral portion and sandwiched by a pair of polarizing plates, a liquid crystal injection port communicating with the internal liquid crystal is formed from at least one of the plastic film substrates. A liquid crystal display element, comprising a sealant encapsulating and a polarizing plate adhered to each other.
板との接着によりプラスチックフィルム基板と偏光板と
が接合してなることを特徴とする請求項１記載の液晶表
示素子。2. The liquid crystal display device according to claim 1, wherein the plastic film substrate and the polarizing plate are bonded to each other by adhering a sealing agent that seals a liquid crystal inlet and the polarizing plate.
スチックフィルム基板を所定の間隔をもって対向させて
周辺部をシールし、前記プラスチックフィルム基板の少
なくとも一方より内面に通ずる液晶注入口より液晶を注
入した後、前記液晶注入口に封止剤を設置し、前記液晶
注入口をおおって偏光板を前記プラスチックフィルム基
板の上に接合することを特徴とする液晶表示素子の製造
方法。3. A pair of plastic film substrates provided with a transparent electrode and an alignment film are opposed to each other at a predetermined interval to seal the peripheral portion, and a liquid crystal is injected from a liquid crystal injection port communicating with the inner surface of at least one of the plastic film substrates. After the injection, a sealant is placed in the liquid crystal inlet, and a polarizing plate is bonded onto the plastic film substrate so as to cover the liquid crystal inlet and a method for manufacturing a liquid crystal display device.
が硬化しない前に前記液晶注入口をおおって偏光板をプ
ラスチックフィルム基板の上に設置して接合することを
特徴とする請求項３記載の液晶表示素子の製造方法。4. A liquid crystal injection port is provided with a sealant, and a polarizing plate is installed on the plastic film substrate to cover the liquid crystal injection port before the sealant is not cured and bonded. The method for manufacturing a liquid crystal display element according to claim 3.
し、所定の温度にて所定時間の放置をし、前記液晶注入
口の外周辺に存在する液晶を洗浄して除去した後、前記
封止剤が硬化しない前に前記液晶注入口を、おおって偏
光板をプラスチックフィルム基板の上に設置して接合す
ることを特徴とする請求項４記載の液晶表示素子の製造
方法。5. A liquid crystal injection port is provided with a thermosetting sealant, left at a predetermined temperature for a predetermined time, and the liquid crystal existing around the liquid crystal injection port is washed and removed. The method for manufacturing a liquid crystal display device according to claim 4, wherein the liquid crystal injection port is covered and a polarizing plate is placed on a plastic film substrate to be bonded before the sealing agent is not cured.
止剤を察知し、該封止剤に所定量の紫外線を照射して半
硬化状態にし、前記液晶注入口の外周辺に存在する液晶
を洗浄して除去した後、前記封止剤が硬化しない前に前
記液晶注入口をおおって偏光板をプラスチックフィルム
基板の上に設置し、再び前記封止剤に所定量の紫外線を
照射して硬化せしめることを特徴とする請求項４記載の
液晶表示素子の製造方法。6. A liquid crystal injection port is detected as an ultraviolet-curable resin-made sealing agent, and the sealing agent is irradiated with a predetermined amount of ultraviolet rays to be in a semi-cured state, and is present around the liquid crystal injection port. After cleaning and removing the liquid crystal, cover the liquid crystal injection port and set the polarizing plate on the plastic film substrate before the encapsulant is cured, and irradiate the encapsulant with a predetermined amount of ultraviolet light again. The method for producing a liquid crystal display element according to claim 4, wherein the method is followed by curing.
おって偏光板をプラスチックフィルム基板の上に設置
し、その後液晶表示素子を上下方向から加圧して前記偏
光板をプラスチックフィルム基板に接合することを特徴
とする請求項４記載の液晶表示素子の製造方法。7. The polarizing plate is placed on the plastic film substrate by covering the liquid crystal injection port before the encapsulant is cured, and then the liquid crystal display device is vertically pressed to apply the polarizing plate to the plastic film substrate. The method for manufacturing a liquid crystal display device according to claim 4, wherein the liquid crystal display device is bonded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3330069A JPH0695132A (en) | 1991-11-19 | 1991-11-19 | Liquid crystal display device and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3330069A JPH0695132A (en) | 1991-11-19 | 1991-11-19 | Liquid crystal display device and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0695132A true JPH0695132A (en) | 1994-04-08 |
Family
ID=18228436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3330069A Pending JPH0695132A (en) | 1991-11-19 | 1991-11-19 | Liquid crystal display device and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0695132A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6844910B2 (en) * | 1999-12-28 | 2005-01-18 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and manufacturing method thereof |
| JP2011107391A (en) * | 2009-11-17 | 2011-06-02 | Hitachi Displays Ltd | Display device |
| JP2012008492A (en) * | 2010-06-28 | 2012-01-12 | Casio Comput Co Ltd | Method for manufacturing liquid crystal element |
-
1991
- 1991-11-19 JP JP3330069A patent/JPH0695132A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6844910B2 (en) * | 1999-12-28 | 2005-01-18 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and manufacturing method thereof |
| US7679710B2 (en) | 1999-12-28 | 2010-03-16 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and manufacturing method thereof |
| US8648995B2 (en) | 1999-12-28 | 2014-02-11 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and manufacturing method thereof |
| JP2011107391A (en) * | 2009-11-17 | 2011-06-02 | Hitachi Displays Ltd | Display device |
| JP2012008492A (en) * | 2010-06-28 | 2012-01-12 | Casio Comput Co Ltd | Method for manufacturing liquid crystal element |
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