JP3503192B2 - Manufacturing method of liquid crystal display device - Google Patents
Manufacturing method of liquid crystal display deviceInfo
- Publication number
- JP3503192B2 JP3503192B2 JP13388594A JP13388594A JP3503192B2 JP 3503192 B2 JP3503192 B2 JP 3503192B2 JP 13388594 A JP13388594 A JP 13388594A JP 13388594 A JP13388594 A JP 13388594A JP 3503192 B2 JP3503192 B2 JP 3503192B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- sealing material
- substrates
- injection port
- crystal injection
- 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.)
- Expired - Fee Related
Links
Landscapes
- Liquid Crystal (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は液晶表示装置の製造方
法に関する。FIELD OF THE INVENTION The present invention relates to a method of manufacturing a liquid crystal display device.
Concerning the law .
【０００２】[0002]
【従来の技術】従来の液晶表示装置には、相対向する面
にそれぞれ透明電極等が設けられた２枚のフィルム基板
をその間にスペーサを介在させた状態でシール材を介し
て貼り合わせ、シール材に形成された液晶注入口を介し
てシール材の内側における両フィルム基板間に液晶を注
入し、液晶注入口を封止材で封止した構造のものがあ
る。2. Description of the Related Art In a conventional liquid crystal display device, two film substrates each having a transparent electrode or the like provided on opposite surfaces thereof are bonded to each other via a sealing material with a spacer interposed therebetween, and are sealed. There is a structure in which liquid crystal is injected between both film substrates inside the sealing material through a liquid crystal injection port formed in the material, and the liquid crystal injection port is sealed with a sealing material.
【０００３】ところで、このような液晶表示装置の製造
において液晶注入口を封止材で封止する場合には、一例
として、光硬化性樹脂からなる封止材が収容された封止
材容器を用意し、液晶注入工程後の両フィルム基板の液
晶注入口の部分を封止材容器内の封止材に漬け、毛細管
現象を利用することにより、液晶注入口内に封止材を進
入させ、この後紫外線を照射して封止材を硬化させ、こ
れにより液晶注入口を封止している。By the way, when the liquid crystal injection port is sealed with a sealing material in the manufacture of such a liquid crystal display device, as an example, a sealing material container containing a sealing material made of a photocurable resin is used. Prepare and immerse the liquid crystal injection port part of both film substrates after the liquid crystal injection step in the sealing material in the sealing material container, and use the capillary phenomenon to allow the sealing material to enter the liquid crystal injection port. After that, the sealing material is cured by irradiating ultraviolet rays to seal the liquid crystal injection port.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
このような液晶表示装置の製造方法では、ガラス基板と
異なってフィルム基板が撓みやすい関係から、次のよう
な問題があった。すなわち、液晶注入口内に封止材を進
入させる際の条件が一定であっても、液晶注入口の部分
における両フィルム基板の撓み具合により、液晶注入口
内への封止材の吸い込み量が変化することになる。この
結果、液晶注入口内への封止材の進入量が所期の量より
も少ない場合には、封止が不十分となって、液晶注入口
から液晶が漏れることがあり、信頼性が乏しく、一方、
多い場合には、封止材が表示領域内まで入り込み、表示
品質が低下することがあるという問題があった。なお、
具体的には、量産性を高めるために、例えば図４に示す
ように、複数個の液晶表示装置を得るための短冊状の液
晶表示装置形成体１とスペーサ２とを交互に配置し、そ
の両側から加圧板３、４で加圧した状態で、各液晶表示
装置形成体１の下端部つまり液晶注入口の部分を封止材
容器５内の封止材６に漬けている。この場合、各液晶表
示装置形成体１の下端部つまり液晶注入口の部分をもス
ペーサ２で挾持すると、毛細管現象を利用することがで
きなくなるので、各液晶表示装置形成体１の下端部つま
り液晶注入口の部分を除く部分をスペーサ２で挾持して
おり、このため液晶注入口の部分に撓みが発生しやす
く、上述のような問題が生じることになる。また、この
ように、複数個の液晶表示装置を得るための短冊状の複
数個の液晶表示装置形成体１に対して一度に封止材６の
吸い込みを行う場合、個々の液晶表示装置の液晶注入口
の部分におけるギャップ（両フィルム基板間の間隔）に
バラツキがあると、各液晶表示装置の液晶注入口内への
封止材の吸い込み量にバラツキが生じ、これまた上述の
ような問題が生じることになる。また、後者のようなこ
とは、ガラス基板を用いた液晶表示装置の場合にも起こ
り得る。この発明の目的は、液晶注入口を常に一定量の
封止材で封止することのできる液晶表示装置の製造方法
を提供することにある。However, the conventional method of manufacturing a liquid crystal display device as described above has the following problems because the film substrate is easily bent unlike the glass substrate. That is, even if the conditions for injecting the sealing material into the liquid crystal inlet are constant, the amount of suction of the sealing material into the liquid crystal inlet changes depending on the degree of bending of both film substrates at the liquid crystal inlet. It will be. As a result, when the amount of the sealing material entering the liquid crystal inlet is less than the desired amount, the sealing becomes insufficient and liquid crystal may leak from the liquid crystal inlet, resulting in poor reliability. ,on the other hand,
If the amount is large, there is a problem that the sealing material may enter the display area and the display quality may deteriorate. In addition,
Specifically, in order to improve mass productivity, for example, as shown in FIG. 4, strip-shaped liquid crystal display device forming bodies 1 and spacers 2 for obtaining a plurality of liquid crystal display devices are alternately arranged. The lower end portion of each liquid crystal display device forming body 1, that is, the portion of the liquid crystal inlet is immersed in the sealing material 6 in the sealing material container 5 while being pressed by the pressure plates 3 and 4 from both sides. In this case, if the lower end portion of each liquid crystal display device forming body 1, that is, the portion of the liquid crystal injection port is also sandwiched by the spacer 2, the capillary phenomenon cannot be used, so that the lower end portion of each liquid crystal display device forming body 1, that is, the liquid crystal. Since the spacer 2 holds the portion other than the injection port, the liquid crystal injection port is apt to bend, and the above-mentioned problems occur. In addition, when the sealing material 6 is sucked into a plurality of strip-shaped liquid crystal display device forming bodies 1 at a time for obtaining a plurality of liquid crystal display devices as described above, the liquid crystal of each liquid crystal display device is If the gap (space between both film substrates) in the inlet portion varies, the amount of the sealing material sucked into the liquid crystal inlet of each liquid crystal display device also varies, which also causes the above-mentioned problems. It will be. The latter can also occur in a liquid crystal display device using a glass substrate. An object of the present invention is to provide a method for manufacturing a liquid crystal display device capable of always sealing the liquid crystal inlet with a fixed amount of sealing material.
【０００５】[0005]
【課題を解決するための手段】請求項１記載の発明は、
２枚の基板をその間にスペーサを介在させた状態で前記
２枚の基板間に介在する熱硬化性樹脂からなるシール材
を硬化して貼り合わせるとともに、前記シール材に形成
された液晶注入口内に熱可塑性樹脂からなる封止材を液
晶注入を許容するように配置し、次いで前記シール材の
内側における前記両基板間に前記液晶注入口を介して液
晶を注入し、次いで前記封止材を伸長させて前記液晶注
入口を密閉するようにしたものである。 The invention according to claim 1 is
The above two substrates with spacers interposed between them
Sealing material made of thermosetting resin interposed between two substrates
Is hardened and bonded together, and is also formed on the sealing material
A sealing material made of a thermoplastic resin is filled in the filled liquid crystal inlet.
The sealing material is arranged so as to allow crystal injection.
Liquid is applied between the two substrates inside through the liquid crystal inlet.
Crystal, and then extend the encapsulant to inject the liquid crystal.
The entrance is sealed.
【０００６】[0006]
【作用】請求項１記載の発明によれば、両基板をシール
材を介して貼り合わせる前に、封止材を液晶注入口内に
配置することになるので、この配置をスクリーン印刷法
やディスペンス法等により行うことが可能となり、した
がって液晶注入口内に常に一定量の封止材を配置するこ
とができる。そして、この配置された封止材を伸長させ
て液晶注入口を密閉することになるので、液晶注入口を
常に一定量の封止材で封止することができことになる。
この場合、封止材として熱可塑性樹脂を用いるので、両
基板をシール材を介して貼り合わせた後であっても、封
止材を流動伸長させて液晶注入口を密閉することができ
る。この結果、請求項１記載の発明の場合も、液晶注入
口を常に一定量の封止材で封止することができることに
なる。 According to the invention of claim 1, both substrates are sealed.
Before pasting through the material, put the encapsulant in the liquid crystal injection port.
Since it will be arranged, this arrangement is screen printing method
It became possible to do it by the dispensing method etc.
Therefore, always place a certain amount of sealing material in the liquid crystal inlet.
You can Then, extend the sealing material that is placed
Since the liquid crystal inlet will be sealed with the
It is possible to always seal with a fixed amount of sealing material.
In this case, since a thermoplastic resin is used as the sealing material, both
Even after the substrates are bonded together via the sealing material, the sealing
The stopper can be fluidly expanded to seal the liquid crystal inlet.
It As a result, even in the case of the invention according to claim 1, the liquid crystal is injected.
Being able to always seal the mouth with a certain amount of sealing material
Become.
【０００７】[0007]
【実施例】図１〜図３はそれぞれこの発明の一実施例に
おける液晶表示装置の各製造工程を示したものである。
そこで、これらの図を順に参照しながら、この実施例の
液晶表示装置の構造についてその製造方法と併せ説明す
る。1 to 3 show respective manufacturing steps of a liquid crystal display device according to an embodiment of the present invention.
Therefore, the structure of the liquid crystal display device of this embodiment will be described together with its manufacturing method with reference to these drawings in order.
【０００８】まず、図１（Ａ）および（Ｂ）に示すよう
に、下側フィルム基板１１の上面の所定の個所に透明電
極および配向膜（共に図示せず）が設けられ、配向膜の
周囲にエポキシ系樹脂等の熱硬化性樹脂からなるシール
材１２が設けられ、シール材１２の内側における配向膜
の上面に一定寸法の球状のガラスや樹脂粒子等からなる
スペーサ１３が散布されたものを用意する。この場合、
シール材１２の図１（Ａ）における右辺中央部には液晶
注入口１４が形成されている。また、上側フィルム基板
１５の下面の所定の個所に透明電極および配向膜（共に
図示せず）が設けられ、また下面のうち液晶注入口１４
の中央部に対応する部分に封止材１６が設けられたもの
を用意する。この場合、封止材１６はアクリル系樹脂等
からなる熱可塑性樹脂１７中に径がスペーサ１３の径よ
りもある程度大きい一定寸法の球状のガラスや樹脂粒子
からなるフィラ１８を混入させたものからなり、スクリ
ーン印刷法やディスペンス法等により、所定の量だけ所
定の箇所に配置されている。例えば、スペーサ１３の直
径が２〜１０μｍ程度である場合には、フィラ１８の直
径はその１．５倍程度となっている。また、封止材１５
は、その配置量が当然のことながら液晶注入口１４を必
要かつ十分に密閉し得る量ではあるが、液晶注入口１４
の中央部に対応する部分に配置されて、液晶注入を許容
するようになっている。また、図１（Ｂ）に示すよう
に、挾持部材２１を用意する。この挾持部材２１は、相
対向する面にそれぞれシリコンゴム２２、２３が設けら
れたガラスや金属等からなる２枚の挾持板２４、２５を
備えたものからなっている。シリコンゴム２２、２３は
フィルム基板１１、１５を傷付けないようにするととも
に、後で説明するように、ある状態での加圧力を吸収す
るためのものである。First, as shown in FIGS. 1A and 1B, a transparent electrode and an alignment film (both not shown) are provided at predetermined locations on the upper surface of the lower film substrate 11, and the periphery of the alignment film is provided. Is provided with a sealing material 12 made of a thermosetting resin such as epoxy resin, and a spacer 13 made of spherical glass or resin particles having a certain size is scattered on the upper surface of the alignment film inside the sealing material 12. prepare. in this case,
A liquid crystal inlet 14 is formed at the center of the right side of the sealing material 12 in FIG. In addition, a transparent electrode and an alignment film (both not shown) are provided at predetermined locations on the lower surface of the upper film substrate 15, and the liquid crystal injection port 14 of the lower surface is provided.
Prepared is one in which the sealing material 16 is provided in the portion corresponding to the central portion of the. In this case, the sealing material 16 is formed by mixing a thermoplastic resin 17 made of acrylic resin or the like with a spherical glass having a certain size whose diameter is somewhat larger than the diameter of the spacer 13 or a filler 18 made of resin particles. By a screen printing method, a dispensing method, or the like, a predetermined amount is arranged at a predetermined place. For example, when the spacer 13 has a diameter of about 2 to 10 μm, the filler 18 has a diameter of about 1.5 times the diameter. In addition, the sealing material 15
Of course, the amount of arrangement is such that the liquid crystal injection port 14 can be hermetically sealed in a necessary and sufficient manner.
It is arranged in a portion corresponding to the central portion of the liquid crystal panel to allow liquid crystal injection. Further, as shown in FIG. 1B, a holding member 21 is prepared. The holding member 21 is provided with two holding plates 24 and 25 made of glass, metal or the like having silicon rubbers 22 and 23 provided on opposite surfaces thereof, respectively. The silicon rubbers 22 and 23 are for preventing the film substrates 11 and 15 from being damaged, and for absorbing a pressing force in a certain state, as will be described later.
【０００９】さて、この実施例の液晶表示装置を製造す
る場合には、まず、下側フィルム基板１１の上面に設け
られたシール材１２の上面に上側フィルム基板１５を重
ね合わせる。次に、挾持部材２１によって両フィルム基
板１１、１５をその表裏両面側から挾持し、両フィルム
基板１１、１５の表裏両面側から所定の低圧力（例えば
０．５〜２．０ｋｇ／ｃｍ2程度）を均等に加えなが
ら、１２０〜１３０℃程度で加熱する。すると、図２
（Ａ）および（Ｂ）に示すように、シール材１２が硬化
し、この硬化したシール材１２を介して両フィルム基板
１１、１５が貼り合わされる。この状態では、加圧力が
低圧力であるので、スペーサ１３はつぶれたりすること
なく両フィルム基板１１、１５間に介在される。また、
封止材１６のフィラ１８もつぶれたりすることなく両フ
ィルム基板１１、１５間に介在される。この場合、フィ
ラ１８の直径がスペーサ１３の直径の１．５倍程度とな
っているので、封止材１６が配置された部分における両
フィルム基板１１、１５が共に外側に向かって適宜に湾
曲するが、このときの加圧力はシリコンゴム２２、２３
が同様に湾曲して凹むことにより吸収される。したがっ
て、この状態では、封止材１６の配置部分つまり液晶注
入口１４の部分以外の部分における両フィルム基板１
１、１５間の間隔は所期の間隔となる。なお、封止材１
６の熱可塑性樹脂１７はこのときの加熱により軟化する
が、この部分における両フィルム基板１１、１５間の間
隔がフィラ１８の直径に対応する大きさに保持されてい
ることにより、流動せずにほぼそのままの状態に保持さ
れている。When manufacturing the liquid crystal display device of this embodiment, first, the upper film substrate 15 is superposed on the upper surface of the sealing material 12 provided on the upper surface of the lower film substrate 11. Next, both film substrates 11 and 15 are held from both front and back sides by the holding member 21, and a predetermined low pressure (for example, about 0.5 to 2.0 kg / cm 2 is applied from both front and back sides of both film substrates 11 and 15). ) Is uniformly added while heating at about 120 to 130 ° C. Then, Figure 2
As shown in (A) and (B), the sealing material 12 is cured, and the two film substrates 11 and 15 are bonded together via the cured sealing material 12. In this state, since the applied pressure is low, the spacer 13 is interposed between the film substrates 11 and 15 without being crushed. Also,
The filler 18 of the sealing material 16 is also interposed between the film substrates 11 and 15 without being crushed. In this case, since the diameter of the filler 18 is about 1.5 times the diameter of the spacer 13, both film substrates 11 and 15 in the portion where the sealing material 16 is arranged are appropriately curved outward. However, the applied pressure at this time is silicon rubber 22, 23
Are similarly curved and recessed to be absorbed. Therefore, in this state, both film substrates 1 in the portion where the sealing material 16 is arranged, that is, the portion other than the portion of the liquid crystal injection port 14 are provided.
The interval between 1 and 15 is a desired interval. In addition, the sealing material 1
The thermoplastic resin 17 of No. 6 is softened by heating at this time, but since the space between both film substrates 11 and 15 in this portion is maintained at a size corresponding to the diameter of the filler 18, it does not flow. It is kept almost as it is.
【００１０】次に、挾持部材２１で挾持した両フィルム
基板１１、１５を図示しない真空槽内に配置し、真空槽
内を真空とすることにより、液晶注入口１４を介してシ
ール材１２の内側における両フィルム基板１１、１５間
を真空とする。次に、真空槽内に設けられた液晶だめに
液晶注入口１４の部分を漬け、次いで真空槽内を大気圧
とすることにより、液晶だめ内の液晶２６を液晶注入口
１４を介してシール材１２の内側における両フィルム基
板１１、１５間に注入する。この場合、両フィルム基板
１１、１５の図２（Ａ）および（Ｂ）における右端部つ
まり液晶注入口１４の先端部分を除く部分を挾持部材２
１で挾持するようにすると、液晶注入には何ら支障はな
い。次に、挾持部材２１で挾持した両フィルム基板１
１、１５を真空槽内から取り出し、次いで両フィルム基
板１１、１５から挾持部材２１を取り外す。Next, the film substrates 11 and 15 held by the holding member 21 are placed in a vacuum chamber (not shown), and the inside of the sealing material 12 is sealed through the liquid crystal injection port 14 by creating a vacuum in the vacuum chamber. A vacuum is applied between the two film substrates 11 and 15 in FIG. Next, the portion of the liquid crystal injection port 14 is dipped in a liquid crystal reservoir provided in the vacuum tank, and then the inside of the vacuum chamber is brought to atmospheric pressure, so that the liquid crystal 26 in the liquid crystal reservoir is sealed through the liquid crystal inlet port 14. It is injected between both film substrates 11 and 15 inside 12. In this case, the holding member 2 holds the right end portion of both film substrates 11 and 15 in FIGS. 2A and 2B, that is, the portion excluding the tip portion of the liquid crystal inlet 14.
If it is held at 1, there will be no hindrance to the liquid crystal injection. Next, both film substrates 1 held by the holding member 21.
1 and 15 are taken out from the vacuum chamber, and then the holding member 21 is removed from both film substrates 11 and 15.
【００１１】次に、図示していないが、所定の加圧加熱
治具を用いて、液晶注入口１４の部分における両フィル
ム基板１１、１５の表裏両面側から所定の高圧力（例え
ば１．５〜３．０ｋｇ／ｃｍ2程度）を均等に加えなが
ら、１２０〜１３０℃程度で加熱する。すると、図３
（Ａ）および（Ｂ）に示すように、加圧力が高圧力であ
るので、封止材１６のフィラ１８が両フィルム基板１
１、１５に食い込み（または適宜につぶれ）、これによ
り液晶注入口１４の部分における両フィルム基板１１、
１５間の間隔が所期の間隔となる。また、封止材１６の
熱可塑性樹脂１７がこのときの加熱により軟化して流動
伸長し、この流動伸長した熱可塑性樹脂１７によって液
晶注入口１４が密閉される。そして、封止材１６の熱可
塑性樹脂１７が冷えて硬化すると、この硬化した熱可塑
性樹脂１７によって前晶注入口１４が封止されることに
なる。かくして、この実施例の液晶表示装置が製造され
る。Next, although not shown in the drawing, a predetermined pressure and heating jig is used to apply a predetermined high pressure (for example, 1.5) from both front and back sides of both film substrates 11 and 15 at the liquid crystal injection port 14. (About 3.0 kg / cm 2 ) is evenly added and heated at about 120 to 130 ° C. Then, Fig. 3
As shown in (A) and (B), since the applied pressure is high, the filler 18 of the encapsulant 16 is formed on both film substrates 1.
1, 15 are crushed (or crushed appropriately), so that both film substrates 11 in the liquid crystal injection port 14 portion,
The interval between 15 is the desired interval. Further, the thermoplastic resin 17 of the encapsulant 16 is softened by the heating at this time to flow-expand, and the liquid crystal injection port 14 is sealed by the flow-expanded thermoplastic resin 17. Then, when the thermoplastic resin 17 of the sealing material 16 cools and hardens, the pre-crystal injection port 14 is sealed by the hardened thermoplastic resin 17. Thus, the liquid crystal display device of this embodiment is manufactured.
【００１２】このようにして得られた液晶表示装置で
は、封止材１６として熱可塑性樹脂１７中に径がスペー
サ１３の径よりもある程度大きいフィラ１８を混入させ
てなるものを用い、そしてこの封止材１６を上側基板１
５の下面のうち液晶注入口１４の中央部に対応する部分
にスクリーン印刷法やディスペンス法等によって配置し
ているので、液晶注入口１４内に常に一定量の封止材１
６を配置することができ、したがって液晶注入口１４を
常に一定量のつまり必要かつ十分な量の封止材１６で封
止することができる。この結果、液晶注入口１４から液
晶２６が漏れないようにすることができ、ひいては信頼
性を向上することができ、また封止材１６が表示領域内
まで入り込まないようにすることができ、ひいては表示
品質が低下しないようにすることができる。なお、封止
材１４の配置は、上側フィルム基板１５ではなく、下側
フィルム基板１１としてもよい。In the liquid crystal display device thus obtained, as the sealing material 16, a thermoplastic resin 17 mixed with a filler 18 having a diameter somewhat larger than the diameter of the spacer 13 is used, and the sealing material 16 is used. The stopper 16 is attached to the upper substrate 1
Since a portion of the lower surface of the liquid crystal panel 5 corresponding to the central portion of the liquid crystal injection port 14 is arranged by the screen printing method or the dispensing method, a fixed amount of the sealing material 1 is always provided in the liquid crystal injection port 14.
6 can be arranged, so that the liquid crystal inlet 14 can always be sealed with a fixed amount, that is, a necessary and sufficient amount of the sealing material 16. As a result, it is possible to prevent the liquid crystal 26 from leaking from the liquid crystal injection port 14, improve reliability, and prevent the sealing material 16 from entering the display area. It is possible to prevent the display quality from deteriorating. The sealing material 14 may be arranged not on the upper film substrate 15 but on the lower film substrate 11.
【００１３】[0013]
【発明の効果】以上説明したように、この発明によれ
ば、封止材をスクリーン印刷法やディスペンス法等によ
って配置することが可能であるので、液晶注入口内に常
に一定量の封止材を配置することができ、したがって液
晶注入口を常に一定量のつまり必要かつ十分な量の封止
材で封止することができる。この結果、液晶注入口から
液晶が漏れないようにすることができ、ひいては信頼性
を向上することができ、また封止材が表示領域内まで入
り込まないようにすることができ、ひいては表示品質が
低下しないようにすることができる。As described above, according to the present invention, since the sealing material can be arranged by the screen printing method, the dispensing method, etc., a certain amount of the sealing material is always provided in the liquid crystal inlet. Therefore, the liquid crystal injection port can be always sealed with a fixed amount, that is, a necessary and sufficient amount of the sealing material. As a result, it is possible to prevent liquid crystal from leaking from the liquid crystal injection port, which in turn can improve reliability, prevent the sealing material from entering the display area, and thus improve display quality. It can be prevented from dropping.
【図面の簡単な説明】[Brief description of drawings]
【図１】この発明の一実施例における液晶表示装置の製
造に際し、（Ａ）は下側フィルム基板上に上側フィルム
基板を重ね合わせた状態の平面図、（Ｂ）はそのＢ−Ｂ
線に沿う断面図。FIG. 1A is a plan view showing a state where an upper film substrate is superposed on a lower film substrate, and FIG. 1B is a BB thereof when manufacturing a liquid crystal display device according to an embodiment of the present invention.
Sectional drawing which follows the line.
【図２】同製造に際し、（Ａ）は両フィルム基板をシー
ル材を介して貼り合わせた後液晶を注入した状態の断面
図、（Ｂ）はそのＢ−Ｂ線に沿う断面図。FIG. 2A is a cross-sectional view showing a state in which liquid crystal is injected after the film substrates are bonded together via a sealing material, and FIG. 2B is a cross-sectional view taken along the line BB.
【図３】同製造に際し、（Ａ）は完成した状態の平面
図、（Ｂ）はそのＢ−Ｂ線に沿う断面図。3 (A) is a plan view of a completed state, and FIG. 3 (B) is a cross-sectional view taken along the line BB.
【図４】従来の液晶表示装置の問題点を説明するために
示す概略図。FIG. 4 is a schematic view for explaining a problem of a conventional liquid crystal display device.
１１ 下側フィルム基板 １２ シール材 １３ スペーサ １４ 液晶注入口 １５ 上側フィルム基板 １６ 封止材 １７ 熱可塑性樹脂 １８ フィラ ２６ 液晶 11 Lower film substrate 12 Seal material 13 Spacer 14 Liquid crystal inlet 15 Upper film substrate 16 Sealant 17 Thermoplastic resin 18 Fira 26 LCD
Claims (4)
せた状態で前記２枚の基板間に介在する熱硬化性樹脂か
らなるシール材を硬化して貼り合わせるとともに、前記
シール材に形成された液晶注入口内に熱可塑性樹脂から
なる封止材を液晶注入を許容するように配置し、 次いで前記シール材の内側における前記両基板間に前記
液晶注入口を介して液晶を注入し、 次いで前記封止材を伸長させて前記液晶注入口を密閉す
るようにしたことを特徴とする液晶表示装置の製造方
法。1. A sealing material made of a thermosetting resin interposed between two substrates in a state where a spacer is interposed between the two substrates is cured and bonded, and is formed on the sealing material. A sealing material made of a thermoplastic resin is arranged in the liquid crystal injection port so as to allow liquid crystal injection, and then liquid crystal is injected between the both substrates inside the sealing material through the liquid crystal injection port, and then A method of manufacturing a liquid crystal display device, characterized in that a sealing material is extended to seal the liquid crystal inlet.
前記スペーサの径よりもある程度大きいフィラを混入さ
せたものからなり、前記フィラがつぶれるかもしくは前
記基板に食い込むとともに、前記熱可塑性樹脂が伸長し
て前記液晶注入口を密閉することを特徴とする請求項１
記載の液晶表示装置の製造方法。2. The sealing material is formed by mixing a filler having a diameter larger than the diameter of the spacer in the thermoplastic resin, and the filler is crushed or bites into the substrate and the thermoplastic claim resin is extended, characterized in that sealing the liquid crystal inlet 1
A method for manufacturing the liquid crystal display device described.
により流動伸長して前記液晶注入口を密閉することを特
徴とする請求項１または２記載の液晶表示装置の製造方
法。3. The process for producing the thermoplastic resin is a liquid crystal display device according to claim 1 or 2, wherein the sealing the liquid crystal injection port to flow extended by being pressurized heated.
せた状態で前記２枚の基板間に介在する熱硬化性樹脂か
らなるシール材を重ね合わせるとともに、前記シール材
に形成された液晶注入口内に熱可塑性樹脂中に径が前記
スペーサの径よりもある程度大きいフィラを混入させた
ものからなる封止材を液晶注入を許容するように配置
し、 次いで前記両基板の表裏両面側から所定の低圧力を加え
て加熱することにより、前記封止材をほぼそのままとし
た状態で前記液晶注入口の部分以外の部分における前記
両基板間の間隔を所期の間隔にするとともに、前記シー
ル材を硬化させ、この硬化したシール材を介して前記両
基板を貼り合わせ、 次いで前記シール材の内側における前記両基板間に前記
液晶注入口を介して液晶を注入し、 次いで前記液晶注入口の部分における前記両基板の表裏
両面側から所定の高圧力を加えて加熱することにより、
前記封止材のフィラをつぶすか前記基板に食い込ませ
て、前記液晶注入口の部分における前記両基板間の間隔
を所期の間隔にするとともに、前記封止材の熱可塑性樹
脂を軟化させて流動伸長させ、この流動伸長した熱可塑
性樹脂によって前記液晶注入口を密閉し、 この後前記封止材の熱可塑性樹脂が冷えて硬化すること
により、前記液晶注入口を封止するようにしたことを特
徴とする液晶表示装置の製造方法。4. A sealing material made of a thermosetting resin, which is interposed between the two substrates in a state where a spacer is interposed between the two substrates, is overlapped, and a liquid crystal is formed on the sealing material. A sealing material made of a mixture of a filler having a diameter somewhat larger than the diameter of the spacer in the thermoplastic resin is arranged in the mouth so as to allow liquid crystal injection. By applying a low pressure and heating, the gap between the substrates in a portion other than the liquid crystal injection port is set to a desired gap in a state in which the sealing material is almost unchanged, and the sealing material is applied. After curing, the two substrates are bonded together via the cured sealing material, then liquid crystal is injected between the two substrates inside the sealing material through the liquid crystal injection port, and then the liquid crystal By heating by applying a predetermined high pressure from both front and back sides of the both substrates at the inlet portion,
The filler of the encapsulant is crushed or bites into the substrate to make the gap between the substrates at the liquid crystal injection port a desired gap, and to soften the thermoplastic resin of the encapsulant. The liquid crystal is made to flow-expand, and the liquid crystal injection port is sealed by this flow-expanded thermoplastic resin, and then the thermoplastic resin of the sealing material is cooled and hardened to seal the liquid crystal injection port. A method for manufacturing a liquid crystal display device, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13388594A JP3503192B2 (en) | 1994-05-25 | 1994-05-25 | Manufacturing method of liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13388594A JP3503192B2 (en) | 1994-05-25 | 1994-05-25 | Manufacturing method of liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07318957A JPH07318957A (en) | 1995-12-08 |
| JP3503192B2 true JP3503192B2 (en) | 2004-03-02 |
Family
ID=15115373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13388594A Expired - Fee Related JP3503192B2 (en) | 1994-05-25 | 1994-05-25 | Manufacturing method of liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3503192B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980083602A (en) * | 1997-05-16 | 1998-12-05 | 윤종용 | Liquid Crystal Display Having Uniform Cell Spacing and Manufacturing Method Thereof |
| KR19980085927A (en) * | 1997-05-30 | 1998-12-05 | 엄길용 | Manufacturing method of liquid crystal display device |
| KR100495791B1 (en) * | 1997-07-11 | 2005-09-20 | 삼성전자주식회사 | Liquid crystal display without polluting with sealant and manufacturing method therefor |
| JP3510509B2 (en) * | 1998-12-01 | 2004-03-29 | 株式会社 日立ディスプレイズ | Liquid crystal display |
| KR100533661B1 (en) * | 2000-02-01 | 2005-12-05 | 엘지.필립스 엘시디 주식회사 | METHOD FOR FABRICATING a LIQUID CRYSTAL DISPLAY CELL |
| KR20030046985A (en) * | 2001-12-07 | 2003-06-18 | 엘지.필립스 엘시디 주식회사 | Liquid crystal display device |
| KR100724475B1 (en) * | 2002-11-13 | 2007-06-04 | 엘지.필립스 엘시디 주식회사 | Seal dispenser of liquid crystal display panel and disconnection detection method of seal pattern using the same |
| WO2007102197A1 (en) | 2006-03-07 | 2007-09-13 | Fujitsu Limited | Process and apparatus for producing liquid-crystal display panel |
-
1994
- 1994-05-25 JP JP13388594A patent/JP3503192B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07318957A (en) | 1995-12-08 |
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