JPH02262120A - Method for injecting liquid crystal to liquid crystal display element - Google Patents
Method for injecting liquid crystal to liquid crystal display elementInfo
- Publication number
- JPH02262120A JPH02262120A JP8327689A JP8327689A JPH02262120A JP H02262120 A JPH02262120 A JP H02262120A JP 8327689 A JP8327689 A JP 8327689A JP 8327689 A JP8327689 A JP 8327689A JP H02262120 A JPH02262120 A JP H02262120A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- cell
- opening
- injected
- display element
- 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 158
- 238000000034 method Methods 0.000 title claims description 24
- 210000002858 crystal cell Anatomy 0.000 claims abstract description 28
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 239000011521 glass Substances 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims description 18
- 239000007924 injection Substances 0.000 claims description 18
- 210000004027 cell Anatomy 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 4
- 229920006332 epoxy adhesive Polymers 0.000 abstract description 2
- 239000003960 organic solvent Substances 0.000 description 14
- 238000010586 diagram Methods 0.000 description 6
- 239000003566 sealing material Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は液晶表示素子の注入方法に関し、特に、液晶注
入処理の完了した液晶表示素子の液晶セル内に再度液晶
を注入する方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for injecting liquid crystal display elements, and in particular, to a method for reinjecting liquid crystal into the liquid crystal cell of a liquid crystal display element after liquid crystal injection processing has been completed. be.
第３図は例えば特開昭６２−１４１５１６号公報に示さ
れた従来の入れ換え可能な液晶表示素子の液晶注入法を
説明するための図であり、液晶収容容器内に液晶基板を
立てて配置した状態を示している。FIG. 3 is a diagram for explaining a conventional liquid crystal injection method for a replaceable liquid crystal display element disclosed in, for example, Japanese Unexamined Patent Publication No. 62-141516, in which a liquid crystal substrate is placed upright in a liquid crystal storage container. Indicates the condition.
図において、１３は液晶セル、１２ａ、１２ｂは該液晶
セル１３に形成された液晶注入のための開口部、１４は
該液晶セル１３の対向するガラス基板間に介在する液晶
のシール材、１６は容器１５内に貯溜された液晶あるい
は揮発性の高い有機溶剤、１７は上記開口部１２ａに接
続された液晶吸引用管である。In the figure, 13 is a liquid crystal cell, 12a and 12b are openings formed in the liquid crystal cell 13 for injecting liquid crystal, 14 is a liquid crystal sealing material interposed between the opposing glass substrates of the liquid crystal cell 13, and 16 is a liquid crystal sealing material. Liquid crystal or a highly volatile organic solvent is stored in the container 15, and 17 is a liquid crystal suction tube connected to the opening 12a.
次に入れ換え可能な液晶表示素子の液晶を入れ換える方
法の一例について説明する。Next, an example of a method for replacing the liquid crystal of a replaceable liquid crystal display element will be described.
例えば容器１５内の液晶１６あるいは有機溶剤中に上記
液晶セル１３の一方の開口部１２ｂを漬け、他方の開口
部１２ａを液晶吸入用管１７を介して真空ポンプに接続
してその吸引力により液晶１６あるいは有機溶剤をセル
１３内に注入する。For example, one opening 12b of the liquid crystal cell 13 is immersed in the liquid crystal 16 in the container 15 or in an organic solvent, and the other opening 12a is connected to a vacuum pump via the liquid crystal suction pipe 17, and the suction force is used to cause the liquid crystal to flow. 16 or an organic solvent is injected into the cell 13.
ここで、該有機溶剤を注入する場合にはさらに吸引を続
け、有機溶剤を完全に吸い出したのち液晶１６を注入す
る。Here, when injecting the organic solvent, suction is continued further, and after the organic solvent is completely sucked out, the liquid crystal 16 is injected.
ところが、上記のような従来の入れ換え可能な液晶表示
素子の液晶注入方法では、開口部を全て封止した後、あ
るいは減圧雰囲気を利用して液晶を注入した後は液晶の
注入ができなくなり、液晶に欠陥がある等の場合にはそ
の液晶セルを使用することができなくなるという問題点
があった。However, with the conventional liquid crystal injection method for replaceable liquid crystal display elements as described above, it becomes impossible to inject liquid crystal after all the openings are sealed or after liquid crystal is injected using a reduced pressure atmosphere, and the liquid crystal cannot be injected. There is a problem in that if there is a defect in the liquid crystal cell, the liquid crystal cell cannot be used.
本発明は上記のような問題点を解決するためになされた
もので、液晶の注入、封止処理の完了した液晶セルに新
たに液晶を注入して、液晶の入れ換えをすることができ
る液晶表示素子の液晶注入方法を得ることを目的とする
。The present invention was made in order to solve the above problems, and provides a liquid crystal display in which the liquid crystal can be replaced by newly injecting liquid crystal into the liquid crystal cell that has already been injected and sealed. The purpose is to obtain a liquid crystal injection method for devices.
この発明に係る液晶表示素子の液晶注入方法は、液晶の
注入処理及び該液晶の封止処理の完了した液晶セルのガ
ラス基板に新たに開口部を形成し、該開口部を用いて液
晶の再注入を行なうようにしたものである。A method for injecting liquid crystal into a liquid crystal display element according to the present invention involves forming a new opening in the glass substrate of a liquid crystal cell that has undergone a liquid crystal injection process and a liquid crystal sealing process, and using the opening to refill the liquid crystal. It is designed to perform injection.
〔作用〕
この発明においては、液晶を注入して開口部を封止した
後新たに開口部を形成して、該開口部から液晶の注入を
行うようにしたから、液晶注入中に混入した気泡を除去
したり、液晶の劣化等の欠陥を修復したりすることが可
能となり、液晶表示素子の製造歩留まり低下を防止でき
る。[Operation] In this invention, after the liquid crystal is injected and the opening is sealed, a new opening is formed and the liquid crystal is injected from the opening, so that air bubbles that are mixed in during liquid crystal injection are prevented. This makes it possible to remove defects such as deterioration of the liquid crystal and repair defects such as deterioration of the liquid crystal, thereby preventing a decrease in manufacturing yield of liquid crystal display elements.
また、完成した液晶セル内に、すでに注入された液晶と
は異なる液晶を注入することもでき、これにより同じセ
ルで液晶の比較を行うことができき、液晶評価のための
技術を向上することができる。In addition, it is possible to inject a liquid crystal different from the liquid crystal already injected into the completed liquid crystal cell, making it possible to compare liquid crystals in the same cell and improving technology for liquid crystal evaluation. I can do it.
以下、本発明の一実施例を図について説明する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
第１図（ａ）〜（Ｃ１はこの発明の一実施例による液晶
表示素子の液晶注入方法を工程順に示す図であり、図に
おいて４は液晶駆動素子が形成され、配向処理が施され
たガラス基板、１は該ガラス基板上にシール材３を介し
て配置された上側ガラス基板、２ａ及び２ｂは該上側ガ
ラス基板１に形成された孔、５はその先端にゴム製バン
ド６が取り付けられた管で、該パッド６の吸着力により
上記一方の孔２ａに接続されている。また７は上記他方
の孔２ｂ上に配置された液晶溜め、８は該液晶溜め７内
の液晶、１０は上記基板１，４及びシール材３により形
成された液晶セル内の液晶、８ａは有機溶剤、９ａ及び
９ｂは上記孔２ａ、２ｂ内に埋め込まれた接着剤である
。FIGS. 1(a) to (C1) are diagrams showing the process order of a liquid crystal injection method for a liquid crystal display element according to an embodiment of the present invention. In the figures, 4 is a glass plate on which a liquid crystal driving element is formed and which has been subjected to an alignment treatment. A substrate, 1 is an upper glass substrate placed on the glass substrate via a sealing material 3, 2a and 2b are holes formed in the upper glass substrate 1, and 5 is a rubber band 6 attached to the tip thereof. The tube is connected to the one hole 2a by the suction force of the pad 6.The reference numeral 7 denotes a liquid crystal reservoir disposed above the other hole 2b, 8 denotes the liquid crystal in the liquid crystal reservoir 7, and 10 denotes the liquid crystal reservoir disposed above the other hole 2b. The liquid crystal in the liquid crystal cell formed by the substrates 1 and 4 and the sealing material 3, 8a is an organic solvent, and 9a and 9b are adhesives embedded in the holes 2a and 2b.
次に液晶の注入方法ついて説明する。Next, a method for injecting liquid crystal will be explained.
液晶駆動素子の形成を行い、配向処理を施したたガラス
基板４．１をシール材３を介在させて重ね合わせて液晶
セルを形成し、さらに該セル内に液晶を注入し、該開口
部を封止する。A liquid crystal cell is formed by overlapping the glass substrates 4.1 on which a liquid crystal drive element has been formed and which has been subjected to an alignment treatment with a sealing material 3 interposed therebetween.Furthermore, liquid crystal is injected into the cell, and the opening is closed. Seal.
その後第１図＋ａｌに示すように、超音波加工機。After that, as shown in FIG. 1+al, an ultrasonic processing machine is used.
レーザ等により一方のガラス基板１の非表示部の２箇所
に直径２ｍｍ程度の孔２ａ、 ２ｂを形成する。Holes 2a and 2b each having a diameter of about 2 mm are formed at two locations in the non-display portion of one glass substrate 1 using a laser or the like.
次に第１図（ｂ）に示すように、形成された一方の孔２
ｂには液晶溜め７を設け、その中に脱泡した液晶を滴下
し、また他方の孔２ａには金属バイブ５の先端にゴム製
バット６を取り付けたものを吸着させ、金属バイブ５を
真空ポンプ等に接続して吸引を行い、液晶溜め７の中の
液晶８をセル内に引き込む。この場合真空ポンプ等によ
る吸引と同時に液晶溜め７の中の液晶８を加圧しながら
液晶の注入を行ってもよい。Next, as shown in FIG. 1(b), one of the holes 2 is formed.
A liquid crystal reservoir 7 is provided in b, into which defoamed liquid crystal is dripped, and a rubber bat 6 attached to the tip of a metal vibrator 5 is adsorbed in the other hole 2a, and the metal vibrator 5 is vacuumed. It is connected to a pump or the like to perform suction and draw the liquid crystal 8 in the liquid crystal reservoir 7 into the cell. In this case, the liquid crystal may be injected while pressurizing the liquid crystal 8 in the liquid crystal reservoir 7 at the same time as suction by a vacuum pump or the like.
その後第１図（Ｃ）に示すように、液晶溜め７．金属バ
イブ５．ゴム製バット６を取り除きエポキシ系接着剤９
で孔２ａ、２ｂを封止する。このようにしてセル内部に
再度液晶８を注入して、液晶セル内の気泡の除去、ある
いは劣下した液晶の交換等を行う。Thereafter, as shown in FIG. 1(C), the liquid crystal reservoir 7. Metal vibrator 5. Remove the rubber bat 6 and apply the epoxy adhesive 9
The holes 2a and 2b are sealed. In this way, the liquid crystal 8 is again injected into the cell to remove air bubbles in the liquid crystal cell or replace deteriorated liquid crystal.
次にセル内の液晶を有機溶媒で置換した後に新たに液晶
を注入する場合について説明する。Next, a case will be described in which a new liquid crystal is injected after replacing the liquid crystal in the cell with an organic solvent.
まず孔２ｂを高揮発性の有機溶剤８ａに漬ｉＪ、他方の
孔２ａを金属バイブ５．ゴム製パント６を介して真空ポ
ンプに接続する。この真空ポンプの吸引力によりセルの
内の液晶１０を吸い出すとともに液晶溜め７内の有機溶
剤８ａを吸い込んで液晶１０を有機溶剤８ａに置換する
。置換後、孔２ｂ側の溶剤を取り除き、真空ポンプによ
る吸引を続けてセル内の溶剤８ａを完全に吸い出す。こ
の後、孔２ｂに脱泡した液晶８を漬けて真空ポンプで吸
引し、液晶を注入する。この場合も上記セル内の液晶１
０を有機溶剤８ａに置換する際、また液晶８を注入する
際に、一方の孔２ａより吸引すると同時に有機溶剤８ａ
あるいは液晶８を加圧しながら注入を行ってもよい。First, the hole 2b is immersed in a highly volatile organic solvent 8a, and the other hole 2a is immersed in a metal vibrator 5. Connect to a vacuum pump via a rubber pant 6. The suction force of the vacuum pump sucks out the liquid crystal 10 inside the cell and sucks in the organic solvent 8a in the liquid crystal reservoir 7, replacing the liquid crystal 10 with the organic solvent 8a. After the replacement, the solvent on the hole 2b side is removed, and suction by the vacuum pump is continued to completely suck out the solvent 8a inside the cell. Thereafter, the defoamed liquid crystal 8 is immersed in the hole 2b and sucked with a vacuum pump to inject the liquid crystal. In this case as well, the liquid crystal 1 in the above cell
When replacing 0 with the organic solvent 8a or when injecting the liquid crystal 8, the organic solvent 8a is simultaneously sucked from one hole 2a.
Alternatively, the injection may be performed while pressurizing the liquid crystal 8.
このように本実施例では、液晶セルのガラス基板に超音
波加工機等により開口部を設けるという簡単な手法によ
り、完成した液晶セルにおいてもセル内部に新たな液晶
の注入を行うことができ、これによりセル内部に混入し
た気泡を除去することができ、また劣下した液晶を交換
して表示欠陥を修復することもでき、この結果液晶セル
の製造歩留まり低下を防止することができる。In this way, in this example, new liquid crystal can be injected into the inside of a completed liquid crystal cell by a simple method of forming an opening in the glass substrate of the liquid crystal cell using an ultrasonic processing machine or the like. This makes it possible to remove air bubbles that have entered the inside of the cell, and also to repair display defects by replacing degraded liquid crystal. As a result, it is possible to prevent a drop in manufacturing yield of liquid crystal cells.
また、同じ液晶パネルに異なる液晶を注入できるため、
液晶パネルの影響を考慮する必要がなくなり、異なる液
晶の比較を容易かつ正確に行うことが可能となり、この
結果評価技術を向上することができるという効果がある
。Also, since different liquid crystals can be injected into the same liquid crystal panel,
There is no need to consider the influence of the liquid crystal panel, and it becomes possible to easily and accurately compare different liquid crystals, which has the effect of improving evaluation technology.
また、セル内の有機溶剤を吸い出し、一方の開口部を封
止した後に減圧雰囲気中で他方の開口部からセル内部の
空気を抜き出し、その状態でその開口部を脱泡した液晶
に漬け、大気圧に戻して液晶をセルの内部に注入するこ
ともできる。In addition, after sucking out the organic solvent inside the cell and sealing one opening, the air inside the cell was extracted from the other opening in a reduced pressure atmosphere, and in that state, the opening was immersed in defoamed liquid crystal. It is also possible to return the pressure to atmospheric pressure and inject liquid crystal into the cell.
なお、上記実施例では液晶注入のための開口部を新たに
２箇所設けているが、通常セル形成時には減圧雰囲気中
での液晶注入が行えるように、予め開口部を１箇所設け
てあり、この開口部を封止する前であればこれを一方の
開口部として用いても同様の液晶注入を行うことができ
る。In the above embodiment, two new openings are provided for liquid crystal injection, but one opening is previously provided so that liquid crystal can be injected in a reduced pressure atmosphere during normal cell formation. As long as the opening is not sealed, the liquid crystal can be similarly injected using this opening as one of the openings.
第２図は本発明の他の実施例として、この液晶注入方法
を説明するための図で、新たな開口部を１つ設け、該開
口部と予め形成した開口部とにより液晶注入を行なう方
法を示している。FIG. 2 is a diagram for explaining this liquid crystal injection method as another embodiment of the present invention, in which one new opening is provided and liquid crystal is injected using this opening and a previously formed opening. It shows.
通常、液晶セルでは液晶セルを減圧雰囲気中において開
口部１１からセル内部の空気を抜き出し、その状態で開
口部１１を液晶に漬け、大気圧に戻して液晶セル内部に
注入するようにしており、このため予め開口部１１を１
箇所設けである。この開口部１１を用いれば新たに開口
部２ａを１つ設けるだけで上記実施例と同様に液晶の注
入を行うことができる。Normally, in a liquid crystal cell, the air inside the cell is extracted from the opening 11 in a reduced pressure atmosphere, the opening 11 is immersed in liquid crystal, the pressure is returned to atmospheric pressure, and the air is injected into the liquid crystal cell. For this reason, the opening 11 is
There are several locations. If this opening 11 is used, liquid crystal can be injected in the same manner as in the above embodiment just by providing one new opening 2a.
なお、上記実施例では液晶層が一層の液晶セルについて
述べたが、液晶層は１層に限るものではなく、多層であ
ってもよい。In the above embodiments, a liquid crystal cell having a single liquid crystal layer was described, but the liquid crystal layer is not limited to one layer and may be multilayered.
以上のように、この発明に係る液晶表示素子の液晶注入
方法によれば、液晶の注入処理及び該液晶の封止処理の
完了した液晶セルのガラス基板に新たに開口部を形成し
、該開口部を用いて液晶の再注入を行なうようにしたの
で、最初の液晶注入中に混入した気泡を除去したり、液
晶の劣化等による欠陥を修復したりすることが可能とな
り、液晶表示素子の製造歩留まり低下を防止できる効果
がある。As described above, according to the liquid crystal injection method for a liquid crystal display element according to the present invention, a new opening is formed in the glass substrate of the liquid crystal cell after the liquid crystal injection process and the liquid crystal sealing process have been completed, and the opening is Since the liquid crystal is re-injected using the same unit, it is now possible to remove air bubbles that were mixed in during the initial injection of liquid crystal, and repair defects caused by deterioration of the liquid crystal, making it easier to manufacture liquid crystal display elements. This has the effect of preventing a decrease in yield.
また、完成した液晶セル内に、すでに注入された液晶と
は異なる液晶を注入することもでき、これにより同じセ
ルで液晶の比較を行うことが可能となり、液晶評価のた
めの技術を向上することができる効果もある。In addition, it is possible to inject a liquid crystal different from the liquid crystal already injected into the completed liquid crystal cell, making it possible to compare liquid crystals in the same cell, improving technology for liquid crystal evaluation. It also has the effect of
第１図はこの発明の一実施例による液晶表示素子の液晶
注入方法を説明するための図、第２図はこの発明の他の
実施例による液晶表示素子の液晶注入方法を説明するた
めの図、第３図は従来の入れ替え可能な液晶セルの液晶
注入法を示す図である。
図において、１，４はガラス基板、２ａ、２ｂは孔、３
はシール材、５は液晶吸引用管、６はゴム製バット、７
は液晶溜め、８．１０は液晶、８ａは有機溶剤、９ａ、
９ｂは接着剤、１１は開口部である。
なお、図中同一符号は同一または相当部分を示す。FIG. 1 is a diagram for explaining a liquid crystal injection method for a liquid crystal display element according to an embodiment of the present invention, and FIG. 2 is a diagram for explaining a liquid crystal injection method for a liquid crystal display element according to another embodiment of the invention. , FIG. 3 is a diagram showing a conventional liquid crystal injection method for a replaceable liquid crystal cell. In the figure, 1 and 4 are glass substrates, 2a and 2b are holes, and 3
is a sealing material, 5 is a liquid crystal suction tube, 6 is a rubber bat, 7
is a liquid crystal reservoir, 8.10 is a liquid crystal, 8a is an organic solvent, 9a,
9b is an adhesive, and 11 is an opening. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
晶セルに対して、該液晶セルを構成するガラス基板に開
口部を形成した後該開口部を用いて液晶を新たに注入す
る液晶注入処理を施すことを特徴とする液晶表示素子の
液晶注入方法。(1) For a liquid crystal cell of a liquid crystal display element that has been injected with liquid crystal and sealed, an opening is formed in the glass substrate that constitutes the liquid crystal cell, and then liquid crystal is newly injected using the opening. A method for injecting liquid crystal into a liquid crystal display element, the method comprising performing a liquid crystal injection process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8327689A JPH02262120A (en) | 1989-03-31 | 1989-03-31 | Method for injecting liquid crystal to liquid crystal display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8327689A JPH02262120A (en) | 1989-03-31 | 1989-03-31 | Method for injecting liquid crystal to liquid crystal display element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02262120A true JPH02262120A (en) | 1990-10-24 |
Family
ID=13797837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8327689A Pending JPH02262120A (en) | 1989-03-31 | 1989-03-31 | Method for injecting liquid crystal to liquid crystal display element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02262120A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5576865A (en) * | 1992-08-19 | 1996-11-19 | Canon Kabushiki Kaisha | Process for producing liquid crystal panel including reducing the pressure to no more than 25 torr/minute |
| US8218228B2 (en) | 2009-12-18 | 2012-07-10 | Qualcomm Mems Technologies, Inc. | Two-terminal variable capacitance MEMS device |
| WO2013030999A1 (en) * | 2011-08-31 | 2013-03-07 | 富士通フロンテック株式会社 | Method for manufacturing liquid-crystal panel |
| US8922974B2 (en) | 2009-05-28 | 2014-12-30 | Qualcomm Incorporated | MEMS varactors |
-
1989
- 1989-03-31 JP JP8327689A patent/JPH02262120A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5576865A (en) * | 1992-08-19 | 1996-11-19 | Canon Kabushiki Kaisha | Process for producing liquid crystal panel including reducing the pressure to no more than 25 torr/minute |
| US8922974B2 (en) | 2009-05-28 | 2014-12-30 | Qualcomm Incorporated | MEMS varactors |
| US8218228B2 (en) | 2009-12-18 | 2012-07-10 | Qualcomm Mems Technologies, Inc. | Two-terminal variable capacitance MEMS device |
| WO2013030999A1 (en) * | 2011-08-31 | 2013-03-07 | 富士通フロンテック株式会社 | Method for manufacturing liquid-crystal panel |
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