JPS63223619A - Method for injecting liquid crystal - Google Patents
Method for injecting liquid crystalInfo
- Publication number
- JPS63223619A JPS63223619A JP5846787A JP5846787A JPS63223619A JP S63223619 A JPS63223619 A JP S63223619A JP 5846787 A JP5846787 A JP 5846787A JP 5846787 A JP5846787 A JP 5846787A JP S63223619 A JPS63223619 A JP S63223619A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- vessel
- cell
- inlet
- 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.)
- Pending
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 99
- 238000000034 method Methods 0.000 title claims description 11
- 239000000463 material Substances 0.000 claims abstract description 31
- 238000002347 injection Methods 0.000 claims abstract description 30
- 239000007924 injection Substances 0.000 claims abstract description 30
- 239000011521 glass Substances 0.000 claims abstract description 9
- 239000000853 adhesive Substances 0.000 claims description 13
- 230000001070 adhesive effect Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 4
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 230000005621 ferroelectricity Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000003566 sealing material Substances 0.000 claims 1
- 210000002858 crystal cell Anatomy 0.000 abstract description 12
- 239000000758 substrate Substances 0.000 abstract description 8
- 239000012535 impurity Substances 0.000 abstract description 7
- 210000004027 cell Anatomy 0.000 abstract description 6
- 230000002411 adverse Effects 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000005262 ferroelectric liquid crystals (FLCs) Substances 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）発明の利用分野
本発明は、液晶表示デバイス等に用いられる液晶セルに
液晶を注入する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Application of the Invention The present invention relates to a method for injecting liquid crystal into a liquid crystal cell used in a liquid crystal display device or the like.
（ロ）従来の技術
パーソナルコンピュータ、ワープロ等の表示部に液晶表
示パネルが多く用いられている。(b) Prior Art Liquid crystal display panels are often used in display units of personal computers, word processors, and the like.
これら液晶表示パネルはＴＮ （ツウイステッド・ネマ
チック）型の液晶表示パネルを用いていた。These liquid crystal display panels used TN (twisted nematic) type liquid crystal display panels.
最近、強誘電性液晶を用いた液晶表示パネルが開発され
ており、その高速応答性および表示のメモリ性という特
性が注目を浴び、実用化が進められている。Recently, liquid crystal display panels using ferroelectric liquid crystals have been developed, and their high-speed response and display memory properties have attracted attention, and their practical use is progressing.
第１図に、液晶セルの断面図を示す。（１）は偏光板、
（２）は基板、（３）は透明電極、（４）は配向処理層
、（５）は液晶、（６）はセル外周シール、（７）は偏
光板である。偏光板（１）、（７）の偏光軸のなす角は
表示モード液晶の種類等により異なるが、通常は互いに
垂直となるように設けられている。また、配向処理層（
４）は絶縁性被膜上に水平配向処理を施したものが通常
は用いられる。FIG. 1 shows a cross-sectional view of a liquid crystal cell. (1) is a polarizing plate,
(2) is a substrate, (3) is a transparent electrode, (4) is an alignment treatment layer, (5) is a liquid crystal, (6) is a cell peripheral seal, and (7) is a polarizing plate. Although the angle formed by the polarization axes of the polarizing plates (1) and (7) varies depending on the type of display mode liquid crystal, etc., they are usually provided so as to be perpendicular to each other. In addition, the orientation treatment layer (
For 4), a material obtained by performing horizontal alignment treatment on an insulating film is usually used.
このような液晶表示素子を作成するには必ずこのセルに
液晶を注入することが必要となる。In order to create such a liquid crystal display element, it is necessary to inject liquid crystal into this cell.
この注入法において、従来用いられた方法は、液晶材料
と液晶セルを真空チャンバ内に設置し、チャンバ内を真
空に排気した後、液晶セルの注入口付近に液晶材料を接
解させた後、チャンバ内を徐々に大気圧に戻してセル内
の圧力とチャンバ内の圧力との圧力差により液晶材料を
セル内に注入するものであった。In this injection method, the method conventionally used is to place the liquid crystal material and the liquid crystal cell in a vacuum chamber, evacuate the chamber, and then weld the liquid crystal material near the injection port of the liquid crystal cell. The pressure inside the chamber was gradually returned to atmospheric pressure, and the liquid crystal material was injected into the cell using the pressure difference between the pressure inside the cell and the pressure inside the chamber.
しかしながら、従来の注入法を用いた場合には以下に示
すような欠点があった。However, when conventional injection methods were used, there were drawbacks as shown below.
液晶材料特に、強誘電性液晶材料は、配向膜材料表面に
付着または内部より出る不純物により悪影響をうけ、材
料の劣化が促進される。また表示ムラの原因にもなって
いる。Liquid crystal materials, particularly ferroelectric liquid crystal materials, are adversely affected by impurities that adhere to the surface of the alignment film material or come out from within, accelerating the deterioration of the material. It also causes display unevenness.
特に初期に液晶注入を行った部分、すなわち液晶注入孔
から遠くはなれた部分に表示ムラ、配向ムラが数多く見
られ、製品としての歩留りを下げていた。Particularly, many display and alignment irregularities were observed in areas where liquid crystal was initially injected, that is, areas far away from the liquid crystal injection hole, which lowered the yield of the product.
（ハ）発明の目的
本発明は上記従来技術の欠点を解消し、注入により配向
ムラ、表示ムラが起こらないよう、強誘電性液晶を注入
する方法を提供するものである。(c) Object of the Invention The present invention eliminates the drawbacks of the prior art described above and provides a method for injecting ferroelectric liquid crystal so that alignment unevenness and display unevenness do not occur due to the injection.
（ニ）発明の構成
本願発明は上記目的を達成するために、第２図（Ａ）（
Ｂ）に示すように周囲が封止（８）された一定の間隔を
持つ硝子基板（９）、 Ｑｌにより形成された空間へ、
周囲の封止部（８）の少なくとも１ケ所に設けられた液
晶注入孔αυより液晶材料を注入するに際し、硝子基板
（９） Ｑｌ 、周囲の封止部（８）にかこまれて形成
された空間を分割するように接着部α乃を形成する。こ
の接着部（２）は少なくとも１ケ所の液晶通過部（２）
を有するものである。(d) Structure of the Invention In order to achieve the above object, the present invention is constructed as shown in FIG. 2(A) (
As shown in B), the glass substrate (9) with a certain interval, whose periphery is sealed (8), enters the space formed by Ql,
When injecting the liquid crystal material from the liquid crystal injection hole αυ provided at at least one location in the surrounding sealing part (8), the glass substrate (9) Ql is formed surrounded by the surrounding sealing part (8). Adhesive parts α are formed so as to divide the space. This adhesive part (2) has at least one liquid crystal passage part (2)
It has the following.
これら容器を気密性の減圧容器内に入れ、前記減圧容器
内を排気し、液晶注入孔を液晶材料でふさいだ後、減圧
容器内圧力を戻すことにより、液晶容器内に液晶材料を
注入した後、接着部亜より外側の液晶容器の一部α旬を
除去し、液晶通過部α１を通過してきた液晶を同時に除
去し、液晶通過部Ｑ３１を封止し、液晶を注入する工程
を終了するものである。After placing these containers in an airtight vacuum container, evacuating the vacuum container, blocking the liquid crystal injection hole with the liquid crystal material, and returning the pressure inside the vacuum container, the liquid crystal material is injected into the liquid crystal container. , remove a part of the liquid crystal container outside the adhesive part Q31, simultaneously remove the liquid crystal that has passed through the liquid crystal passage part Q31, seal the liquid crystal passage part Q31, and complete the process of injecting liquid crystal. It is.
以下に実施例により本発明の詳細な説明する。The present invention will be explained in detail below using Examples.
第２図（Ａ）（Ｂ）に、本実施例で用いたセルの構造を
示す。FIGS. 2A and 2B show the structure of the cell used in this example.
実施例においては公知の真空液晶注入装置を使用した。In the examples, a known vacuum liquid crystal injection device was used.
第２図に示すように、本実施例にて用いた液晶セルは硝
子等の絶縁性透光性基板（９）αΦ上に形成された透明
電極α９及び配向処理層αｅを内側に対抗させてスペー
サαｅで支持し、周囲を封止（８）シ、注入孔ｏｎとは
、離れた位置に、液晶注入空間を分割するように接着部
（転）を設け、その接着部には少なくとも１ケ所の液晶
通過部ａ３１を有する液晶容器を用いた。この接着部（
２）は周辺封止部（８）を形成する際同時に同じ材料に
より形成されており、硝子基板（９） （ｍｌを張り合
わせている。As shown in FIG. 2, the liquid crystal cell used in this example has a transparent electrode α9 formed on an insulating light-transmitting substrate (9) αΦ such as glass, and an alignment layer αe facing each other on the inside. It is supported by a spacer αe, the surrounding area is sealed (8), and an adhesive part (rolling) is provided at a position away from the injection hole on so as to divide the liquid crystal injection space, and at least one place is attached to the adhesive part. A liquid crystal container having a liquid crystal passage part a31 of 100 mm was used. This adhesive part (
2) is formed of the same material at the same time as forming the peripheral sealing part (8), and the glass substrate (9) (ml) is pasted together.
このような構造を持つ液晶容器を第３図に示す減圧容器
α刀を持つ注入装置内に入れ、容器Ｑ７］を減圧に排気
する。本実施例の場合では−Ｉ Ｘｌ０−２Ｔ。A liquid crystal container having such a structure is placed in an injection device having a vacuum container α shown in FIG. 3, and the container Q7 is evacuated to a reduced pressure. In the case of this example, -I Xl0-2T.
ｒｒまで排気した。この後液晶材料をディスペンスして
注入孔Ｑｌ）をふさいだ。この際、液晶材料の流動性を
増すために、若干温度を上げていてもよい。Exhausted to rr. After this, liquid crystal material was dispensed to close the injection hole Ql). At this time, the temperature may be slightly raised in order to increase the fluidity of the liquid crystal material.
この場合温度を上げすぎると液晶材料が藩発する為、液
晶が等労相領域を示す付近の温度が良かった。In this case, if the temperature is raised too high, the liquid crystal material will bleed, so a temperature near where the liquid crystal exhibits an equal phase range was preferable.
次に減圧容器内の圧力を、ゆっくり戻してゆき注入孔ａ
Ｄより液晶材料を注入した。Next, slowly return the pressure inside the vacuum container to the injection hole a.
Liquid crystal material was injected from D.
液晶材料は注入孔αＤより容器に注入され、容器全体に
ゆきわたり、一部の液晶材料は、接着部（１２１の液晶
通過部（２）を通過し、液晶容器のαａの部分にまで満
たされる。このα船の部分は注入孔よりはなれて設けら
れているため、この部分に満たされた液晶は、注入初期
に注入されたものであり、長い間にわたって配向膜Ｑ６
）と接触しており、配向膜αｅの表面に付着していた不
純物を含んでおり特にこの部分は注入時の移動とともに
不純物を含み他の部分よりも、その濃度が高い領域であ
った。The liquid crystal material is injected into the container through the injection hole αD and spreads throughout the container, and some of the liquid crystal material passes through the liquid crystal passage part (2) of the adhesive part (121) and fills the part αa of the liquid crystal container. Since this alpha ship part is provided away from the injection hole, the liquid crystal filled in this part was injected at the initial stage of injection, and the liquid crystal remained in the alignment film Q6 for a long time.
) and contained impurities that had adhered to the surface of the alignment film αe. In particular, this region contained impurities as they moved during implantation and had a higher concentration than other regions.
次にこの液晶容器を取り出しガラス切りを用いて容器の
Ｏａ部分を除去した。そして接着部（ロ）の液晶通過部
α争を接着剤により封止し、液晶注入工程を終了した。Next, this liquid crystal container was taken out and the Oa portion of the container was removed using a glass cutter. Then, the liquid crystal passage part α of the adhesive part (b) was sealed with adhesive, and the liquid crystal injection process was completed.
この接着部（功は注入孔αυよりはなれた位置すなわち
液晶の注入が最後におこなわれる位置に設けてあれば第
３図に示すように、いろいろな形に設けることが可能で
ある。As long as this adhesive part is provided at a position away from the injection hole αυ, that is, at a position where the liquid crystal is finally injected, it can be provided in various shapes as shown in FIG.
また本実施例においては注入後に、ガラス切りにより容
器を除去したが液晶容器形成時に基板（９）ＧＯ＋に切
断用溝を設けておき前述の注入終了後に不要部を手で折
って除去してもよい。In addition, in this example, the container was removed by glass cutting after injection, but it is also possible to provide a cutting groove in the substrate (9) GO+ when forming the liquid crystal container and remove the unnecessary part by hand after the injection is completed. good.
本発明により液晶表示ムラ及び配向ムラの原因となる不
純物を含んだ部分の液晶を除去することができ、良質な
液晶セルを提供することができた。According to the present invention, it was possible to remove liquid crystal in portions containing impurities that cause unevenness in liquid crystal display and alignment, and it was possible to provide a high-quality liquid crystal cell.
（ホ）効果
本発明は前述のような構成を有することにより液晶材料
、特に強誘電性液晶材料にとっては、配向ムラ、表示ム
ラ及び劣化の原因となる配向膜より発生する不純物を除
去することができたため、良好な配向性を示す表示ムラ
のない液晶装置を作成することができたものである。(e) Effects The present invention has the above-described structure, so that it is possible to remove impurities generated from the alignment film that cause alignment unevenness, display unevenness, and deterioration for liquid crystal materials, especially ferroelectric liquid crystal materials. As a result, it was possible to create a liquid crystal device with good alignment and no display unevenness.
第１図は従来の液晶セルの断面図。
第２図、第３図は本発明に用いる液晶セルの概略図。
２．９．１０・・・・・・・・・基板
３．１５・・・・・・・・・電極
４．１６・・・・・・・・・配向処理層５・・・・・・
・・・液晶
１１・・・・・・・・・注入孔
１２・・・・・・・・・接着部Figure 1 is a cross-sectional view of a conventional liquid crystal cell. FIGS. 2 and 3 are schematic diagrams of a liquid crystal cell used in the present invention. 2.9.10...Substrate 3.15...Electrode 4.16...Alignment layer 5...
...Liquid crystal 11...Injection hole 12...Adhesive part
Claims (1)
周囲を封止することにより液晶を注入する空間を持つ液
晶外容器に少なくとも１ケ所の液晶注入孔と前記空間を
分割し少なくとも１ケ所の液晶通過部を持つ周囲封止材
と同じ材料の接着部とを形成し、前記液晶外容器を気密
性の減圧容器内に入れ、前記減圧容器内を排気した状態
で前記液晶外容器の液晶注入孔を液晶材料にてふさぎ、
次に前記減圧容器内の圧力を戻すことにより、前記液晶
材料を前記液晶注入空間に注入し、前記空間内の接着部
より注入孔とは反対側の前記一対のガラス板を除去する
ことにより前記液晶通過部を通過した液晶材料を除去し
た後、前記液晶通過部を封止せしめることを特徴とする
液晶注入方法。 ２、特許請求の範囲第１項において使用する液晶材料は
、強誘電性を示す液晶材料を少なくとも含むことを特徴
とする液晶注入方法。 ３、特許請求の範囲第１項において、前記液晶外容器を
加熱しながら液晶材料を注入することを特徴とする液晶
注入方法。[Claims] 1. A pair of glass plates are spaced apart from each other at uniform intervals and the periphery is sealed to divide the space into a liquid crystal outer container having at least one liquid crystal injection hole and a space for injecting liquid crystal. A surrounding sealing material having at least one liquid crystal passage part and an adhesive part made of the same material are formed, the liquid crystal outer container is placed in an airtight vacuum container, and the liquid crystal is placed in a state where the inside of the vacuum container is evacuated. Block the liquid crystal injection hole in the outer container with liquid crystal material,
Next, by returning the pressure in the vacuum container, the liquid crystal material is injected into the liquid crystal injection space, and by removing the pair of glass plates on the side opposite to the injection hole from the adhesive part in the space, the liquid crystal material is injected into the liquid crystal injection space. A liquid crystal injection method, comprising: removing the liquid crystal material that has passed through the liquid crystal passage part, and then sealing the liquid crystal passage part. 2. A liquid crystal injection method, wherein the liquid crystal material used in claim 1 contains at least a liquid crystal material exhibiting ferroelectricity. 3. A liquid crystal injection method according to claim 1, characterized in that the liquid crystal material is injected while heating the liquid crystal outer container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5846787A JPS63223619A (en) | 1987-03-12 | 1987-03-12 | Method for injecting liquid crystal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5846787A JPS63223619A (en) | 1987-03-12 | 1987-03-12 | Method for injecting liquid crystal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63223619A true JPS63223619A (en) | 1988-09-19 |
Family
ID=13085236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5846787A Pending JPS63223619A (en) | 1987-03-12 | 1987-03-12 | Method for injecting liquid crystal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63223619A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5986736A (en) * | 1995-04-26 | 1999-11-16 | Canon Kabushiki Kaisha | Liquid crystal device, image display apparatus and image forming apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5792309A (en) * | 1980-11-28 | 1982-06-08 | Sharp Corp | Manufacture of liquid crystal display element |
-
1987
- 1987-03-12 JP JP5846787A patent/JPS63223619A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5792309A (en) * | 1980-11-28 | 1982-06-08 | Sharp Corp | Manufacture of liquid crystal display element |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5986736A (en) * | 1995-04-26 | 1999-11-16 | Canon Kabushiki Kaisha | Liquid crystal device, image display apparatus and image forming apparatus |
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