JPS6315218A - Manufacture of liquid crystal display element - Google Patents
Manufacture of liquid crystal display elementInfo
- Publication number
- JPS6315218A JPS6315218A JP16051886A JP16051886A JPS6315218A JP S6315218 A JPS6315218 A JP S6315218A JP 16051886 A JP16051886 A JP 16051886A JP 16051886 A JP16051886 A JP 16051886A JP S6315218 A JPS6315218 A JP S6315218A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- cell
- pressure
- valve
- closed
- 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 54
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000002347 injection Methods 0.000 claims abstract description 21
- 239000007924 injection Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 5
- 229910001873 dinitrogen Inorganic materials 0.000 abstract description 5
- 239000004990 Smectic liquid crystal Substances 0.000 description 4
- 239000004988 Nematic liquid crystal Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1341—Filling or closing of cells
Abstract
Description
【発明の詳細な説明】
「技術分野」
本発明は、液晶表示素子の製造方法に関し、特にセル内
部への液晶の注入方法の改良に間する。DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a method for manufacturing a liquid crystal display element, and particularly to an improvement in a method for injecting liquid crystal into a cell.
「従来技術およびその問題点」
今日、液晶表示素子は、時計、電卓等の表示部としで広
く用いられ、ざらに、○Ａ機器のディスプレイ、自動車
計器パネル、テレビにも利用され、表示部の大画面化が
進んできている。"Prior Art and its Problems" Today, liquid crystal display elements are widely used as the display part of watches, calculators, etc., and are also used in the displays of ○A equipment, automobile instrument panels, and televisions. Screens are becoming larger.
このような液晶表示素子の高速応答液晶材料として、最
近では、ネマチック液晶よりも粘度の高いカイラルスメ
クチックＣ液晶が実用化されようとしている。このカイ
ラルスメクチックＣ液晶は、透明電極を内側に形成した
二枚のガラス基板を接合してなるセルのセルギャップに
封入されると、螺旋かほどザ、光軸が一方向１こ整列す
る。このセルでは、印加される電圧により液晶分子の光
軸の角度が変化し、二枚の偏光板の間に挟んで動作させ
ることにより、複屈折が変化して光の変調が起こるもの
である。Chiral smectic C liquid crystal, which has a higher viscosity than nematic liquid crystal, has recently been put into practical use as a high-speed response liquid crystal material for such liquid crystal display elements. When this chiral smectic C liquid crystal is sealed in the cell gap of a cell made by bonding two glass substrates with transparent electrodes formed inside, the optical axis becomes aligned in one direction as the chiral smectic C liquid crystal spirals. In this cell, the angle of the optical axis of the liquid crystal molecules changes depending on the applied voltage, and by operating the liquid crystal molecules between two polarizing plates, the birefringence changes and light modulation occurs.
ところで、液晶をセル内部に注入する方法としては、い
わゆる真室注入法が一般的に採用されでいる。これは、
セルを減圧雰囲気下におき、セルの一部に形成された注
入口からセル内部の空気を抜き出し、その状態で注入口
を液晶の槽に浸漬させ、大気圧に戻しで液晶を注入口か
らセルの内部に注入させる方法である。By the way, a so-called true chamber injection method is generally adopted as a method for injecting liquid crystal into the inside of a cell. this is,
The cell is placed in a reduced pressure atmosphere, and the air inside the cell is extracted from the inlet formed in a part of the cell.The inlet is then immersed in the liquid crystal bath, and the pressure is returned to atmospheric pressure, and the liquid crystal is removed from the inlet into the cell. This method involves injecting it into the inside of the body.
しかしながら、上記真空注入法によると、表示面積の拡
大１こ伴なってセル面積が大きくなるにつれ、液晶の注
入時間が長くなるという問題が生じている。特に、上記
カイラルスメクチックＣ液晶は、従来のネマチック液晶
と比較して、液晶表示素子のセルギャップが、従来の１
／３〜１１５の２ｕｍ程度と小ざくなってあり、粘度も
高いので、液晶の注入時間の長さが大きな問題としでク
ローズアップされてきている。However, according to the above-mentioned vacuum injection method, a problem arises in that as the display area increases and the cell area becomes larger, the liquid crystal injection time becomes longer. In particular, the above-mentioned chiral smectic C liquid crystal has a cell gap of a liquid crystal display element that is 1/2 compared to a conventional nematic liquid crystal.
/3~115, which is about 2 um, and has a high viscosity, so the long injection time of liquid crystal has become a major problem and has been highlighted.
「発明の目的」
本発明の目的は、上記従来技術の問題点を解決し、セル
内への液晶の注入時間を短縮することができるようにし
た液晶表示素子の製造方法を提供すること（こある。``Object of the Invention'' An object of the present invention is to provide a method for manufacturing a liquid crystal display element that solves the problems of the prior art described above and can shorten the time required to inject liquid crystal into a cell. be.
「発明の構成」
本発明は、内面に電極を形成した一対の基板を、注入口
となる部分を残しで環状のシール部で互いに貼り合せ、
内部にギヤ・ンブを保持させたセルを構成し、このセル
内部に液晶を注入する液晶表示素子の製造方法において
、雰囲気を低圧とした状態でセルの注入口を液晶に浸漬
し、その状態で雰囲気を大気圧からさらに高圧にするこ
とにより、液晶をセル内部に注入することを特徴とする
。"Structure of the Invention" The present invention involves bonding a pair of substrates with electrodes formed on their inner surfaces to each other at an annular sealing part, leaving the part that will become the injection port.
In a manufacturing method for a liquid crystal display element, which consists of a cell that holds a gear pump inside, and injects liquid crystal into the cell, the injection port of the cell is immersed in the liquid crystal in a low pressure atmosphere, and then It is characterized by injecting liquid crystal into the cell by raising the atmosphere from atmospheric pressure to a higher pressure.
このように液晶を注入する際の圧力を低圧から大気圧ざ
らに高圧とすることにより、液晶注入時にセル内部とセ
ル外部雰囲気間の圧力差を従来より大きくできるので、
液晶注入時開の短縮を図ることが可能となる。In this way, by increasing the pressure when injecting liquid crystal from low pressure to almost atmospheric pressure, the pressure difference between the inside of the cell and the atmosphere outside the cell can be made larger than before when injecting liquid crystal.
It becomes possible to shorten the opening time when liquid crystal is injected.
「発明の実施例」
実施例
第１図には、本発明を実施するための装置の一例が示さ
れている。"Embodiments of the Invention" Embodiment FIG. 1 shows an example of an apparatus for carrying out the present invention.
この装置は、耐圧容器１に蓋板２が開閉自在に設けられ
、蓋板２は蓋押え３によって耐圧容器１を密封可能とし
ている。耐圧容器１にはバルブ４を有するバイブ５ａの
一端が連結され、バイブ５ａの他端は真空ポンプ１６に
連結されている。また、耐圧容器１にはバルブ６を有す
るバイブ５ｂの一端も連結され、バイブ５ｂの他端はレ
ギュレータ１４ヲ介してチッソガスボンベ（１５０ｋｃ
＋／ｃｍ、７ｍ）１５に連結されている。ざらに、耐圧
容器１の内部にはリール８が設置されており、リール８
から引出された糸９にセル１０が吊下げられるようにな
っている。なお、耐圧客器１に設けられたハンドル７の
操作１こより、図示しない連動機構を介してリール８が
回転し、糸９に吊下げられたセル１０が昇降するように
なっている。糸９に吊下げられたセル１０の下方には、
液晶１２が貯留された容器１１が配置され、容器１１の
下方にはホットプレート１３が配置されでいる。このホ
ットプレート１３は、液晶＋２を室温から１５０℃のま
での範囲の温度で温めるものである。In this device, a pressure-resistant container 1 is provided with a lid plate 2 that can be opened and closed, and the lid plate 2 is capable of sealing the pressure-resistant container 1 with a lid holder 3. One end of a vibrator 5a having a valve 4 is connected to the pressure-resistant container 1, and the other end of the vibrator 5a is connected to a vacuum pump 16. Further, one end of a vibrator 5b having a valve 6 is also connected to the pressure-resistant container 1, and the other end of the vibrator 5b is connected to a nitrogen gas cylinder (150kc) via a regulator 14.
+/cm, 7m) connected to 15. Roughly speaking, a reel 8 is installed inside the pressure vessel 1.
A cell 10 is suspended from a thread 9 pulled out from the thread 9. In addition, by operating a handle 7 provided on the pressure-resistant passenger device 1, a reel 8 is rotated via an interlocking mechanism (not shown), and a cell 10 suspended from a thread 9 is raised and lowered. Below the cell 10 suspended from the thread 9,
A container 11 in which liquid crystal 12 is stored is arranged, and a hot plate 13 is arranged below the container 11. This hot plate 13 warms the liquid crystal +2 at a temperature ranging from room temperature to 150°C.
次に、この装置を用いた本発明の詳細な説明する。まず
、液晶１２をホットプレート１３にて約６０”Ｃｌｔｌ
：温めでおく、セル（たて１５０ｍｍＸよこ２１０ｍｍ
、セルギャップ平均８ｕｍ ） １０を、注入口を下向
きにして糸９に取りつけ、蓋板２を閉して蓋押え３によ
り耐圧容器１を密閉する。そして、バルブ６を閉じ、バ
ルブ４を開いて真空ポンプ１６にで耐圧容器１内の空気
を抜出し、内部を５Ｘ １０−２ｍｍＨ９の圧力とする
０次に、ハンドル７でリール８を回転し、セル１０ｒ８
下げて、容器１１内の液晶１２にセル１０の注入口を浸
す、そしで、バルブ４を閉じ、バルブ６を開き、レギュ
レータ１４で圧力＠５に９Ｘｃｍに調整しつつチッソガ
スボンベ１５からチッソガスを耐圧客器１内に導入する
。この状態で、液晶１２がセル１０の内部に隙間なく充
填するまでそのまま保持する。その猪、ハンドル７でセ
ル１０を引き上げ、蓋板２を開はセル１０を取出す。Next, the present invention using this device will be explained in detail. First, the liquid crystal 12 is heated to about 6” Cltl on the hot plate 13.
: Warm the cell (height 150mm x width 210mm)
, average cell gap 8 um) 10 was attached to the thread 9 with the injection port facing downward, the lid plate 2 was closed, and the pressure-resistant container 1 was sealed with the lid holder 3. Then, close the valve 6, open the valve 4, and use the vacuum pump 16 to extract the air inside the pressure-resistant container 1, and make the inside pressure 5X 10-2 mmH9.Next, the reel 8 is rotated with the handle 7, and the 10r8
The injection port of the cell 10 is immersed in the liquid crystal 12 in the container 11, and then the valve 4 is closed, the valve 6 is opened, and the pressure is adjusted to 5 to 9Xcm with the regulator 14, and nitrogen gas is injected from the nitrogen gas cylinder 15 under pressure. Introduced into customer equipment 1. This state is maintained until the liquid crystal 12 fills the inside of the cell 10 without any gaps. The boar then pulls up the cell 10 with the handle 7, opens the lid plate 2, and takes out the cell 10.
上記実施例にあいで、液晶１２の注入開始から終了まで
７０分間であった。In the above example, it took 70 minutes from the start to the end of injection of the liquid crystal 12.
なお、上記の装＝において、チッンガスボンへ１５の代
りに他の不活性ガスあるいは空気のボンベ等を用いるこ
ともでき、ざらには加圧ポンプ等を用いることもできる
。In the above arrangement, other inert gas or air cylinders may be used in place of the gas cylinder 15, and a pressurizing pump or the like may also be used.
比較例
第２図には、従来の液晶注入方法に使用される装置の一
例が示されでいる。この装置は、第１図（こ示す装置に
おいて、バイブ５ｂがバルブ６を介して大気（あるいは
不活性ガス雰囲気）に開放されている点が異なっている
。Comparative Example FIG. 2 shows an example of an apparatus used in a conventional liquid crystal injection method. This device differs from that shown in FIG. 1 in that a vibrator 5b is exposed to the atmosphere (or an inert gas atmosphere) through a valve 6.
次に、この装置を用いた従来の液晶注入方法を説明する
と、上記実施例と同様に、まず、液晶１２をホットプレ
ート１３（こで約６０℃に温めておく、セル（たて１５
０ｍｍｘよこ２ ］ Ｏｍｍ、セルギャップ平均８ ｕ
ｍ ） Ｉｎを、注入口を下向きにして糸９に取りつけ
、蓋板２を閉じて型押え３によつ耐圧容器１ヲト閉する
。そして、バルブ６を閉じ、バルブ４を開いて真空ポン
プ１６にて耐圧容器１内の空気を抜出し、内部を５ｘ
１０−２ｍｍＨｑの圧力とした後、ハンドル７でリール
８を回転し、セル１０を下げで、容器１１内の液晶１２
（こセル注入口を浸す、そして、バルブ４を閉じ、バル
ブ６を開いて、耐圧容器１内を大気に開放する。この状
態で、液晶１２がセル１０の内部に隙間なく充填するま
でそのまま保持する。その後、ハンドル７でセル１０ヲ
引き上げ、蓋板２を開はセル１０を取出す。Next, to explain the conventional liquid crystal injection method using this device, as in the above embodiment, first, the liquid crystal 12 is heated to about 60°C on a hot plate 13 (on a cell (vertical 15 cm)).
0mm x horizontal 2] Omm, cell gap average 8u
m) Attach In to the thread 9 with the injection port facing downward, close the lid plate 2, and close the pressure container 1 with the presser foot 3. Then, the valve 6 is closed, the valve 4 is opened, the air inside the pressure vessel 1 is extracted using the vacuum pump 16, and the inside is
After setting the pressure to 10-2 mmHq, rotate the reel 8 with the handle 7 and lower the cell 10 to release the liquid crystal 12 in the container 11.
(Immerse the cell inlet, then close the valve 4 and open the valve 6 to open the pressure container 1 to the atmosphere. Hold in this state until the liquid crystal 12 is filled into the cell 10 without any gaps.) Then, use the handle 7 to pull up the cell 10, open the lid plate 2, and take out the cell 10.
上記従来方法においては、液晶１２の注入開始から終了
まで９０分間を要した。In the conventional method described above, 90 minutes were required from the start to the end of injection of the liquid crystal 12.
「発明の効果」
以上説明したように、本発明によれば、従来の液晶注入
装置に加圧手段を設け、装置本体内を低圧から大気圧、
そして高圧にすることにより、液晶注入時にセル内部と
外部雰囲気との間の圧力差を従来より大きくでき、液晶
の注入時間を短縮することができる。"Effects of the Invention" As explained above, according to the present invention, the conventional liquid crystal injection device is provided with a pressurizing means, and the inside of the device main body is changed from low pressure to atmospheric pressure.
By increasing the pressure, the pressure difference between the inside of the cell and the outside atmosphere can be made larger than before when liquid crystal is injected, and the liquid crystal injection time can be shortened.
第１図は本発明による方法を実施するための装置の一例
を示す断面図、第２図は従来法を実施するための装置の
一例を示す断面図である。
１・・・耐圧容器、 ２・・・蓋板、 ３・・・型押え
、４・・・バルブ、 ５ａ、５ｂ・・・バイブ、 ６・
・・バルブ、７・・・ハンドル、 ８・−・リール、
９・・・糸、１０・・・セル、 １１・・・容器、 １
２・・・液晶、１３・・・ホットプレート、 １４・
・・レギュレータ、１５・・・チッソガスボンへ、 １
６・・・真空ポンプ。FIG. 1 is a sectional view showing an example of an apparatus for implementing the method according to the present invention, and FIG. 2 is a sectional view showing an example of an apparatus for implementing the conventional method. 1... Pressure-resistant container, 2... Lid plate, 3... Mold holder, 4... Valve, 5a, 5b... Vibrator, 6.
... Valve, 7... Handle, 8... Reel,
9... Thread, 10... Cell, 11... Container, 1
2...Liquid crystal, 13...Hot plate, 14.
...Regulator, 15...To Chisso Gas Bonn, 1
6...Vacuum pump.
Claims (1)
を残して環状のシール部で互いに貼り合せ、内部にギャ
ップを保持させたセルを構成し、このセル内部に液晶を
注入する液晶表示素子の製造方法において、雰囲気を低
圧とした状態でセルの注入口を液晶に浸漬し、その状態
で雰囲気を大気圧からさらに高圧にすることにより、液
晶をセル内部に注入することを特徴とする液晶表示素子
の製造方法。A liquid crystal display in which a pair of substrates with electrodes formed on their inner surfaces are attached to each other with an annular seal, leaving a portion that will serve as an injection port, to form a cell with an internal gap, and liquid crystal is injected into this cell. The device manufacturing method is characterized by immersing the injection port of the cell in the liquid crystal in a low-pressure atmosphere, and injecting the liquid crystal into the cell by raising the atmosphere from atmospheric pressure to a higher pressure. A method for manufacturing a liquid crystal display element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16051886A JPS6315218A (en) | 1986-07-08 | 1986-07-08 | Manufacture of liquid crystal display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16051886A JPS6315218A (en) | 1986-07-08 | 1986-07-08 | Manufacture of liquid crystal display element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6315218A true JPS6315218A (en) | 1988-01-22 |
Family
ID=15716690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16051886A Pending JPS6315218A (en) | 1986-07-08 | 1986-07-08 | Manufacture of liquid crystal display element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6315218A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5479284A (en) * | 1992-08-19 | 1995-12-26 | Canon Kabushiki Kaisha | Increasing temperature injection methods for a liquid crystal cell |
| US10787851B2 (en) | 2015-11-13 | 2020-09-29 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Bamberg | Window regulator assembly having snap-together guide elements for a flush-mount pane design, and assembly method |
| US10843538B2 (en) | 2016-01-15 | 2020-11-24 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Bamberg | Vehicle-door assembly with insertion regions on frame-side guide elements and mounting method |
| US10844643B2 (en) | 2016-01-26 | 2020-11-24 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Bamberg | Window lifter assembly with multipart pane guide element for a flush pane design, and assembly method |
-
1986
- 1986-07-08 JP JP16051886A patent/JPS6315218A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5479284A (en) * | 1992-08-19 | 1995-12-26 | Canon Kabushiki Kaisha | Increasing temperature injection methods for a liquid crystal cell |
| 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 |
| US5699138A (en) * | 1992-08-19 | 1997-12-16 | Canon Kabushiki Kaisha | Process for injecting liquid crystal into a liquid crystal panel |
| US10787851B2 (en) | 2015-11-13 | 2020-09-29 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Bamberg | Window regulator assembly having snap-together guide elements for a flush-mount pane design, and assembly method |
| US10843538B2 (en) | 2016-01-15 | 2020-11-24 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Bamberg | Vehicle-door assembly with insertion regions on frame-side guide elements and mounting method |
| US10844643B2 (en) | 2016-01-26 | 2020-11-24 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Bamberg | Window lifter assembly with multipart pane guide element for a flush pane design, and assembly method |
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