JPH11249156A - Liquid crystal injection device and liquid crystal injection method - Google Patents

Liquid crystal injection device and liquid crystal injection method

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Publication number
JPH11249156A
JPH11249156A JP5472798A JP5472798A JPH11249156A JP H11249156 A JPH11249156 A JP H11249156A JP 5472798 A JP5472798 A JP 5472798A JP 5472798 A JP5472798 A JP 5472798A JP H11249156 A JPH11249156 A JP H11249156A
Authority
JP
Japan
Prior art keywords
liquid crystal
crystal display
vacuum chamber
display panel
gas
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
Application number
JP5472798A
Other languages
Japanese (ja)
Inventor
Yoshinori Kawabata
良宣 川端
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP5472798A priority Critical patent/JPH11249156A/en
Publication of JPH11249156A publication Critical patent/JPH11249156A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To improve the productivity of a liquid crystal display device and to inject liquid crystal without causing the quantity deterioration of a liquid crystal material by providing a heating means in a route for connecting a vac uum chamber and an atmosphere control means. SOLUTION: Plural liquid crystal display panels 1 are aligned and held while an injection port is made down by a cassette and installed inside a vacuum chamber 2. A liquid crystal material is put in a liquid crystal tray 3 and the liquid crystal tray 3 is vertically movably held so as to bring the liquid crystal material into contact with the injection port of the liquid crystal display panel 1 by an elevating and lowering means 4 after being exhausted. Then, a gas temperature adjustment means 10 efficiently heats gas, gas piping is brought into contact with a heating means and a cooling means in high density and heat exchange is efficiently performed. The temperature is controlled by the control of the flow rate balance of a valve. In such a manner, the heating means is provided in a route for connecting the vacuum chamber 2 and the atmosphere control means.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、液晶表示装置の製
造に使用する液晶注入装置及び液晶注入方法に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal injection device and a liquid crystal injection method used for manufacturing a liquid crystal display device.

【０００２】[0002]

【従来の技術】従来、２枚の基板を対向配置させてシー
ル材を介して貼り合わせた液晶表示パネル内に、真空注
入法によって液晶を注入する方法については、種々提案
されている。しかし、生産性やコスト面から見て、一般
的に実施されていたのは次に示す方法である。2. Description of the Related Art Conventionally, various methods have been proposed for injecting a liquid crystal into a liquid crystal display panel in which two substrates are arranged opposite to each other and bonded together via a sealing material by a vacuum injection method. However, from the viewpoint of productivity and cost, the following method is generally used.

【０００３】まず、液晶注入用の真空チャンバに、液晶
表示パネルと液晶を入れた液晶皿をセットする。真空チ
ャンバには、該チャンバ内の雰囲気を制御するための排
気系と加圧系が接続されており、まず排気系により真空
チャンバ内の残存空気を排除した後、液晶表示パネルの
液晶注入口を液晶皿の液晶に浸し、真空チャンバの中
に、加圧系から空気或いは不活性ガスを導入し、ほぼ真
空状態の液晶表示パネル内の気圧と大気圧に戻った真空
チャンバ内の気圧差、及び液晶表示パネル内面の表面張
力を利用した毛細管現象を利用して、常温で液晶表示パ
ネル内に液晶を充填する。First, a liquid crystal display panel and a liquid crystal dish containing liquid crystal are set in a vacuum chamber for liquid crystal injection. An exhaust system and a pressurizing system for controlling the atmosphere in the chamber are connected to the vacuum chamber.First, after the residual air in the vacuum chamber is eliminated by the exhaust system, the liquid crystal inlet of the liquid crystal display panel is connected. Immerse in the liquid crystal of the liquid crystal dish, introduce air or inert gas from the pressurized system into the vacuum chamber, and return the atmospheric pressure in the vacuum chamber to the atmospheric pressure in the liquid crystal display panel and the atmospheric pressure in a substantially vacuum state, and The liquid crystal is filled in the liquid crystal display panel at room temperature by utilizing the capillary phenomenon utilizing the surface tension of the inner surface of the liquid crystal display panel.

【０００４】[0004]

【発明が解決しようとする課題】しかしながら、上記従
来の液晶注入装置及び方法では、液晶表示装置の大型化
に伴い、液晶注入に大変時間がかかるという問題があっ
た。この問題は１０インチ以上の大型液晶表示パネルに
おいて顕著であり、この液晶注入時間を短縮することが
生産性の向上に不可欠な問題であった。However, in the above-described conventional liquid crystal injection device and method, there is a problem that it takes a very long time to inject the liquid crystal as the size of the liquid crystal display device increases. This problem is remarkable in a large liquid crystal display panel of 10 inches or more, and shortening the liquid crystal injection time is indispensable for improving the productivity.

【０００５】その解決方法として、液晶を加熱して粘度
を下げることで液晶表示パネルへの液晶充填時の抵抗を
低くして注入速度を上げることが考えられる。これを具
体的に実現するための液晶を加熱する方法としては、例
えば、特開昭６２−９１９１５号公報に示されている赤
外線を液晶表示パネルに照射するものや、また特開昭６
２−２３１２１３号公報や特開平７−１２８６７３号公
報に示されているヒータや熱交換プレートを用いて液晶
表示パネルや液晶皿に直接熱を加えて加熱するものがあ
った。As a solution, it is conceivable to increase the injection speed by lowering the viscosity of the liquid crystal display panel by heating the liquid crystal to lower the resistance when the liquid crystal is filled into the liquid crystal display panel. As a method of specifically realizing this, a method of heating a liquid crystal, for example, a method of irradiating an infrared ray to a liquid crystal display panel disclosed in Japanese Patent Application Laid-Open No.
In some cases, a liquid crystal display panel or a liquid crystal dish is directly heated by using a heater or a heat exchange plate disclosed in Japanese Patent Application Laid-Open No. 2-231213 or Japanese Patent Application Laid-Open No. 7-128673.

【０００６】しかし、赤外線のような熱線による加熱
は、熱線源の配置場所を含め、限られたスペースの真空
チャンバ内で液晶表示パネルに均一に熱線を照射するこ
とが困難であり、その結果液晶表示パネルの面内温度分
布を均一にすることができないという問題があった。ま
た、熱線源を真空チャンバ内に配置する必要があるた
め、一度に多数の液晶表示パネルに液晶を注入すること
が困難であった。However, it is difficult to uniformly irradiate a liquid crystal display panel with heat rays in a vacuum chamber of a limited space including a place where a heat ray source is arranged, as a result of heating by heat rays such as infrared rays. There is a problem that the in-plane temperature distribution of the display panel cannot be made uniform. Further, since it is necessary to arrange the heat ray source in the vacuum chamber, it has been difficult to inject liquid crystal into many liquid crystal display panels at once.

【０００７】また、ヒータ等により液晶表示パネルを加
熱するものは、液晶表示パネルに加熱源を密着させるた
めの機構が必要で、構造が複雑かつ大型化するという問
題があった。また、スペース的に多数枚処理が困難であ
った。また、液晶表示パネルの入れ替え時に加熱源の脱
着作業が必要であり、結果的に液晶表示パネル入れ替え
の時間が長くなるという問題があった。さらに、液晶表
示パネルに加熱機構を取り付ける際に、液晶表示パネル
表面に傷を付ける恐れがあった。[0007] Further, a device for heating a liquid crystal display panel by a heater or the like requires a mechanism for bringing a heating source into close contact with the liquid crystal display panel, and has a problem that the structure is complicated and large. Further, it was difficult to process a large number of sheets in terms of space. In addition, when the liquid crystal display panel is replaced, it is necessary to attach and detach the heating source, and as a result, there is a problem that the time for replacing the liquid crystal display panel becomes longer. Further, when the heating mechanism is attached to the liquid crystal display panel, there is a fear that the surface of the liquid crystal display panel may be damaged.

【０００８】また、液晶皿を加熱するものでは、液晶皿
内で加熱された液晶材料が液晶表示パネル内に浸透する
と、液晶表示パネル内の液晶材料は雰囲気温度の影響で
冷却されてしまい、液晶皿加熱により一度低下した粘度
がもとに戻ることにより、浸透速度の向上による注入時
間短縮効果が少なくなる。また、この方法では、液晶材
料投入量が多い場合、液晶材料の温度を設定温度にまで
昇温するのに時間がかかるという問題があった。In the case of heating the liquid crystal dish, when the liquid crystal material heated in the liquid crystal dish penetrates into the liquid crystal display panel, the liquid crystal material in the liquid crystal display panel is cooled by the influence of the ambient temperature, and the liquid crystal material is cooled. By returning the viscosity once reduced by the dish heating, the effect of shortening the injection time due to the improvement of the penetration rate is reduced. In addition, this method has a problem that when the amount of liquid crystal material charged is large, it takes time to raise the temperature of the liquid crystal material to the set temperature.

【０００９】そこで、この昇温時間を短縮するために、
真空チャンバ内の真空排気時から液晶皿の加熱を行う
と、気圧が下がるほど液晶材料の沸点が下がるために、
比較的低温状態で液晶材料の低沸点成分が揮発してしま
うことにより、相転移温度の変化等が生じ、液晶表示装
置としての液晶品質が保てなくなる恐れがあった。例え
ば、通常ＴＦＴ液晶表示装置に使用される粘度の低い液
晶材料で、１×１０-2Ｔｏｒｒで真空排気を４時間行っ
た場合、液温４０℃程度で低沸点成分の揮発が確認され
るものもあり、液晶表示パネルの大型化で排気時間が長
くなるとこの影響が顕著に現れてくる。この問題は、上
述した液晶表示パネルを加熱する機構を有するもので
も、熱伝導による液温上昇により発生する可能性があっ
た。Therefore, in order to shorten the heating time,
If the liquid crystal dish is heated from the time of evacuation in the vacuum chamber, the lower the air pressure, the lower the boiling point of the liquid crystal material.
When the low boiling point component of the liquid crystal material volatilizes in a relatively low temperature state, a change in the phase transition temperature or the like occurs, and the liquid crystal quality of the liquid crystal display device may not be maintained. For example, a low-viscosity liquid crystal material usually used for a TFT liquid crystal display device, when a vacuum evacuation is performed at 1 × 10 −2 Torr for 4 hours, volatilization of a low boiling point component is confirmed at a liquid temperature of about 40 ° C. This effect is more pronounced when the evacuation time is lengthened due to an increase in the size of the liquid crystal display panel. This problem may occur due to an increase in the liquid temperature due to heat conduction, even in a device having a mechanism for heating the liquid crystal display panel described above.

【００１０】本発明は、このような従来技術の問題点を
解決するためになされたものであり、液晶表示装置の生
産性を向上させるとともに、液晶材料の品質低下を招く
ことなく液晶注入が行える液晶注入装置及び液晶注入方
法を提供することを目的とする。The present invention has been made to solve such problems of the prior art, and can improve the productivity of a liquid crystal display device and perform liquid crystal injection without deteriorating the quality of a liquid crystal material. It is an object to provide a liquid crystal injection device and a liquid crystal injection method.

【００１１】[0011]

【課題を解決するための手段】本発明は、少なくとも真
空チャンバと該真空チャンバ内の雰囲気制御手段とを備
えた液晶注入装置において、前記真空チャンバと前記雰
囲気制御手段とを結ぶ経路中に加熱手段を備えたことを
特徴とする。According to the present invention, there is provided a liquid crystal injection apparatus having at least a vacuum chamber and atmosphere control means in the vacuum chamber, wherein a heating means is provided in a path connecting the vacuum chamber and the atmosphere control means. It is characterized by having.

【００１２】また、本発明は、真空チャンバを用いて一
対の基板をシール材を介して貼り合わせた液晶表示パネ
ル内に液晶を注入する液晶注入方法において、前記真空
チャンバ内に、加熱された気体を導入して液晶材料を加
熱することを特徴とする。Further, according to the present invention, in a liquid crystal injection method for injecting liquid crystal into a liquid crystal display panel in which a pair of substrates are bonded via a sealing material by using a vacuum chamber, a heated gas is injected into the vacuum chamber. And heating the liquid crystal material.

【００１３】さらに、前記液晶材料の加熱を、前記真空
チャンバ内が真空状態から大気圧に移行した後、または
移行途中に行なうことを特徴とする。Further, the method is characterized in that the heating of the liquid crystal material is performed after or during the transition from the vacuum state to the atmospheric pressure in the vacuum chamber.

【００１４】以下、作用について説明する。本発明の液
晶注入装置によれば、液晶注入用の真空チャンバ内に熱
線源、ヒータ等の加熱源を設けることなく簡単な装置構
成で液晶材料を加熱して液晶注入時間の短縮を図ること
ができる。また、真空チャンバ内に加熱源を設ける必要
がないため、加熱気体が循環可能なピッチにまで液晶表
示パネルを並べて、処理枚数を多くすることができる。
また、液晶表示パネルへの加熱源の脱着機構が不要なた
め、液晶表示パネル入れ替えの時間が増加することがな
く、さらに、液晶表示パネル表面に傷を付けることもな
い。The operation will be described below. ADVANTAGE OF THE INVENTION According to the liquid crystal injection apparatus of this invention, a liquid crystal material is heated by a simple apparatus structure without providing a heating source, such as a heat ray source and a heater, in a vacuum chamber for liquid crystal injection, and the liquid crystal injection time can be shortened. it can. Further, since there is no need to provide a heating source in the vacuum chamber, the number of processed liquid crystal display panels can be increased by arranging the liquid crystal display panels up to a pitch at which the heated gas can be circulated.
Further, since a mechanism for attaching and detaching a heating source to and from the liquid crystal display panel is unnecessary, the time for replacing the liquid crystal display panel does not increase, and the surface of the liquid crystal display panel is not damaged.

【００１５】また、本発明の液晶注入方法によれば、真
空チャンバ内を大気圧にするための空気或いは不活性ガ
スを、該チャンバ内に供給する前に加熱して供給するた
め、液晶表示パネル及び液晶皿の液晶温度を効率よく加
熱することができる。一般的なＴＦＴ液晶表示装置用の
液晶材料では、液温を常温（２４℃）から５０℃に加熱
上昇させることで、その粘度が約４０％下がるものもあ
る。液晶の注入時間は注入される液晶材料の粘度にほぼ
比例するため、液晶材料の粘度低下による液晶注入時間
の短縮効果は大きい。According to the liquid crystal injection method of the present invention, the air or the inert gas for bringing the inside of the vacuum chamber to atmospheric pressure is heated and supplied before being supplied to the chamber. In addition, the liquid crystal temperature of the liquid crystal dish can be efficiently heated. In a liquid crystal material for a general TFT liquid crystal display device, there is a liquid crystal material whose viscosity is reduced by about 40% by raising the liquid temperature from room temperature (24 ° C.) to 50 ° C. Since the injection time of the liquid crystal is substantially proportional to the viscosity of the injected liquid crystal material, the effect of reducing the injection time of the liquid crystal due to the decrease in the viscosity of the liquid crystal material is great.

【００１６】また、本発明の注入方法によれば、真空チ
ャンバ内を真空排気して液晶表示パネル内をほぼ真空に
して液晶皿に浸した後、真空チャンバ内を大気圧に戻し
た後、もしくはその大気圧に戻す過程の途中から液晶表
示パネル周囲の雰囲気の温度を上昇させるため、液晶材
料が減圧により沸点温度が低下している状態ではなく大
気圧付近の沸点温度か、それより高い状態になった後で
昇温させることになり、低沸点成分の揮発を防止するこ
とができる。Further, according to the injection method of the present invention, after evacuating the inside of the vacuum chamber to make the inside of the liquid crystal display panel substantially vacuum and immersing it in the liquid crystal dish, returning the inside of the vacuum chamber to atmospheric pressure, or In order to raise the temperature of the atmosphere around the liquid crystal display panel during the process of returning to the atmospheric pressure, the liquid crystal material is not in a state where the boiling point temperature is reduced by decompression but in a state in which the boiling point temperature is near the atmospheric pressure or higher. After that, the temperature is raised, and the volatilization of low-boiling components can be prevented.

【００１７】[0017]

【発明の実施の形態】以下、本発明の実施形態について
詳細に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail.

【００１８】図１はこの実施形態に係る液晶注入装置の
構成を示す概略構成図で、（ａ）は正面図、（ｂ）は要
部上面図である。図において、液晶表示パネル１は、図
示しないカセットにより注入口を下にして複数枚整列保
持され、真空チャンバ２内に設置される。液晶皿３には
液晶材料が入れられており、排気の後、昇降手段４によ
り液晶表示パネル１の注入口に液晶材料を接触させるべ
く液晶皿３を上下に移動可能なように保持されている。
なお、本実施形態では液晶皿３が昇降する構成となって
いるが、液晶表示パネル１側を昇降手段４により上下す
るよう構成してもよい。FIGS. 1A and 1B are schematic diagrams showing the configuration of a liquid crystal injection device according to this embodiment. FIG. 1A is a front view, and FIG. In the drawing, a plurality of liquid crystal display panels 1 are aligned and held by a cassette (not shown) with an injection port facing down, and are installed in a vacuum chamber 2. A liquid crystal material is put in the liquid crystal dish 3, and after evacuation, the liquid crystal dish 3 is held by the elevating means 4 so as to be able to move up and down so that the liquid crystal material is brought into contact with the injection port of the liquid crystal display panel 1. .
In this embodiment, the liquid crystal dish 3 is configured to move up and down. However, the liquid crystal display panel 1 may be moved up and down by the elevating means 4.

【００１９】以下、液晶注入工程について順次説明す
る。まず、排気工程について説明する。真空チャンバ２
には排気及びガス供給のための経路である配管が接続さ
れ、排気は真空ポンプ５により行われる。各経路にはバ
ルブ２０、２１、２２が設けられており、排気時にはバ
ルブ２０のみを開いて真空チャンバ２を常温で減圧す
る。通常は１×１０-1〜１０-2Ｔｏｒｒ程度まで排気
し、液晶表示パネル１内の排気が完了するまで保持す
る。次に、昇降手段４を使って液晶皿を上昇させて液晶
表示パネル１の注入口を液晶皿３に入れられた液晶材料
に浸ける。液晶表示パネル１内を毛細管現象により液晶
材料が液晶表示パネル１の中に浸透し始める。液晶表示
パネル１に液晶材料が浸透し始めたら真空チャンバ２内
を大気圧に戻すために、空気または不活性ガス等の気体
を導入する。ここではガスを導入する場合について説明
する。導入されるガスは清浄な状態のもので、バルブ２
２のみを開いてガス源６から流量を制御された状態で供
給され、ガス温度調節手段１０を経て導入口７から真空
チャンバ２内に送り込まれる。Hereinafter, the liquid crystal injection step will be sequentially described. First, the exhaust process will be described. Vacuum chamber 2
Is connected to a pipe which is a path for exhaust and gas supply, and the exhaust is performed by a vacuum pump 5. Valves 20, 21, and 22 are provided in each path, and only the valve 20 is opened during evacuation to reduce the pressure in the vacuum chamber 2 at room temperature. Usually, the gas is evacuated to about 1 × 10 −1 to 10 −2 Torr, and is maintained until the evacuation in the liquid crystal display panel 1 is completed. Next, the liquid crystal dish is raised using the elevating means 4, and the filling port of the liquid crystal display panel 1 is immersed in the liquid crystal material put in the liquid crystal dish 3. The liquid crystal material starts to penetrate into the liquid crystal display panel 1 due to the capillary phenomenon in the liquid crystal display panel 1. When the liquid crystal material starts to permeate the liquid crystal display panel 1, a gas such as air or an inert gas is introduced to return the inside of the vacuum chamber 2 to the atmospheric pressure. Here, a case where gas is introduced will be described. The gas to be introduced is in a clean state and the valve 2
2 is opened and supplied at a controlled flow rate from the gas source 6, and is fed into the vacuum chamber 2 from the inlet 7 through the gas temperature adjusting means 10.

【００２０】ガス温度調節手段１０は、ガスを効率よく
加熱できる構成となっており、例えば図２に示すように
加熱手段３０と冷却手段３１に対し、ガス配管３２を高
密度に接触させる構造として、効率よく熱交換できるよ
うにしている。温度の制御はバルブ３３、３４の流量バ
ランスの制御により行う。The gas temperature adjusting means 10 has a structure capable of efficiently heating the gas. For example, as shown in FIG. 2, the gas temperature adjusting means 10 has a structure in which the gas pipe 32 is brought into contact with the heating means 30 and the cooling means 31 at a high density. , So that heat can be exchanged efficiently. The temperature is controlled by controlling the flow rate balance between the valves 33 and 34.

【００２１】真空チャンバ２内へのガス供給は、ガス導
入口７から行われる。このガス導入口７は、液晶表示パ
ネル１を効率よく加熱するため、例えば図１（ｂ）に示
すように複数の口７ａを設け、その口７ａは複数の液晶
表示パネル１の隙間を気体が流れるような形状とする。
また、ガス導入口７を上下２段にする等複数箇所設置す
ることで、パネル内温度の均一性と応答性を向上させる
ことができる。真空圧から大気圧までの昇圧時間が数１
０分かかるときは、初期のガス導入時から加熱する方が
効果的である。Gas supply into the vacuum chamber 2 is performed from a gas inlet 7. In order to efficiently heat the liquid crystal display panel 1, the gas inlet 7 is provided with a plurality of ports 7a as shown in FIG. 1B, for example. It has a flowing shape.
In addition, by installing the gas inlet 7 in a plurality of places such as two upper and lower stages, the uniformity of the temperature in the panel and the responsiveness can be improved. Pressure rise time from vacuum pressure to atmospheric pressure is several tens
When it takes 0 minutes, it is more effective to heat from the initial gas introduction.

【００２２】また真空チャンバ２が大気圧の状態になっ
た後から加熱するときは、バルブ２１のみを開き、ガス
温度調節手段１０前部に接続されたガス送風手段１０ａ
で真空チャンバ２内の雰囲気を循環させ、引き続き温度
調節を行う。なお、ガス雰囲気の汚染が心配される場合
は、引き続きガス源６から清浄なガスを供給しつつ、バ
ルブ２１の出口側を装置外へ排出する。When heating after the vacuum chamber 2 is brought to the atmospheric pressure state, only the valve 21 is opened, and the gas blowing means 10a connected to the front of the gas temperature adjusting means 10 is opened.
Circulates the atmosphere in the vacuum chamber 2 and subsequently adjusts the temperature. If there is a concern about contamination of the gas atmosphere, the outlet side of the valve 21 is discharged out of the apparatus while continuously supplying a clean gas from the gas source 6.

【００２３】ここで、加熱温度について説明すると、上
記実施形態のように液晶材料周囲が空間になっていて常
圧中で加熱する方法においても、高温になると液晶成分
の揮発が確認される。例えば、一般的なＴＦＴ用の低粘
度の液晶材料で加熱温度が７０℃以上になると低沸点成
分の揮発が確認されるものもある。従って、加熱温度の
設定は、使用する液晶材料により決定すればよい。ま
た、加熱、冷却の時間に関しても液晶表示パネルの種
類、使用材料により異なる。Here, the heating temperature will be described. In the method in which the liquid crystal material is a space and the heating is performed at normal pressure as in the above embodiment, volatilization of the liquid crystal component is confirmed at a high temperature. For example, there is a general low-viscosity liquid crystal material for a TFT in which volatilization of a low-boiling component is confirmed when the heating temperature is 70 ° C. or higher. Therefore, the setting of the heating temperature may be determined depending on the liquid crystal material used. The heating and cooling times also vary depending on the type of liquid crystal display panel and the material used.

【００２４】液晶表示パネル１内に液晶材料が注入され
た後は、循環ガスの温度を下げ、液晶表示パネル１を室
温に戻す。高温のままで装置外に出し、付着液晶を除去
すると液晶表示パネル１内の液晶温度が下がることによ
り液晶材料が収縮し注入口から気泡が入ることがあるた
めである。After the liquid crystal material is injected into the liquid crystal display panel 1, the temperature of the circulating gas is lowered to return the liquid crystal display panel 1 to room temperature. This is because if the liquid crystal is taken out of the apparatus at a high temperature to remove the adhered liquid crystal, the liquid crystal temperature in the liquid crystal display panel 1 is lowered, so that the liquid crystal material contracts and bubbles may enter from the injection port.

【００２５】以上のようにして液晶表示パネル１へ液晶
材料を注入した後、注入口を封止する。After the liquid crystal material is injected into the liquid crystal display panel 1 as described above, the injection port is sealed.

【００２６】[0026]

【発明の効果】本発明の液晶注入装置によれば、液晶注
入用の真空チャンバ内に熱線源、ヒータ等の加熱源を設
けることなく簡単な装置構成で液晶材料を加熱して液晶
注入時間の短縮を図って生産性向上を図ることができ
る。また、真空チャンバ内に加熱源を設ける必要がない
ため、加熱気体が循環可能なピッチにまで液晶表示パネ
ルを並べて、処理枚数を多くすることができる。また、
液晶表示パネルへの加熱源の脱着機構が不要なため、液
晶表示パネル入れ替えの時間が増加することがなく、さ
らに、液晶表示パネル表面に傷を付けることもない。According to the liquid crystal injection device of the present invention, the liquid crystal material is heated by a simple device configuration without providing a heating source such as a heat ray source or a heater in the vacuum chamber for liquid crystal injection, thereby reducing the liquid crystal injection time. The productivity can be improved by shortening. Further, since there is no need to provide a heating source in the vacuum chamber, the number of processed liquid crystal display panels can be increased by arranging the liquid crystal display panels up to a pitch at which the heated gas can be circulated. Also,
Since a mechanism for attaching and detaching a heating source to and from the liquid crystal display panel is not required, the time for replacing the liquid crystal display panel does not increase, and the surface of the liquid crystal display panel is not damaged.

【００２７】また、本発明の液晶注入方法によれば、真
空チャンバ内を大気圧にするための空気或いは不活性ガ
スを、該チャンバ内に供給する前に加熱して供給するた
め、液晶表示パネル及び液晶皿の液晶温度を効率よく加
熱することができる。According to the liquid crystal injection method of the present invention, air or an inert gas for bringing the inside of a vacuum chamber to atmospheric pressure is heated and supplied before being supplied to the chamber. In addition, the liquid crystal temperature of the liquid crystal dish can be efficiently heated.

【００２８】また、本発明の注入方法によれば、真空チ
ャンバ内を真空排気して液晶表示パネル内をほぼ真空に
して液晶皿に浸した後、真空チャンバ内を大気圧に戻し
た後、もしくはその大気圧に戻す過程の途中から液晶表
示パネル周囲の雰囲気の温度を上昇させるため、液晶材
料が減圧により沸点温度が低下している状態ではなく大
気圧付近の沸点温度か、それより高い状態になった後で
昇温させることになり、低沸点成分の揮発を防止して、
液晶材料の品質低下を防止できる。Further, according to the injection method of the present invention, after the inside of the vacuum chamber is evacuated and the inside of the liquid crystal display panel is almost evacuated and immersed in the liquid crystal dish, the inside of the vacuum chamber is returned to the atmospheric pressure, or In order to raise the temperature of the atmosphere around the liquid crystal display panel during the process of returning to the atmospheric pressure, the liquid crystal material is not in a state where the boiling point temperature is reduced by decompression but in a state in which the boiling point temperature is near the atmospheric pressure or higher. After that, the temperature will be raised to prevent volatilization of low boiling components,
The deterioration of the quality of the liquid crystal material can be prevented.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明に係る液晶注入装置の一実施形態を示す
概略構成図で、（ａ）は正面図、（ｂ）は上面図であ
る。FIG. 1 is a schematic configuration diagram showing an embodiment of a liquid crystal injection device according to the present invention, wherein (a) is a front view and (b) is a top view.

【図２】ガス温度調節手段の一実施例を示す概略構成図
である。FIG. 2 is a schematic configuration diagram showing one embodiment of a gas temperature adjusting means.

【符号の説明】[Explanation of symbols]

１ 液晶表示パネル ２ 液晶注入用真空チャンバ ３ 液晶皿 ４ 昇降手段 ５ 真空ポンプ ６ ガス源 ７ ガス導入口 １０ ガス温度調節手段 ２０ 排気用バルブ ２１ 循環用バルブ ２２ ガス導入用バルブ ３０ 加熱手段 ３１ 冷却手段 ３２ ガス配管 ３３ 加熱用バルブ ３４ 冷却用バルブ DESCRIPTION OF SYMBOLS 1 Liquid crystal display panel 2 Liquid crystal injection vacuum chamber 3 Liquid crystal dish 4 Elevating means 5 Vacuum pump 6 Gas source 7 Gas inlet 10 Gas temperature adjusting means 20 Exhaust valve 21 Circulation valve 22 Gas introduction valve 30 Heating means 31 Cooling means 32 Gas piping 33 Heating valve 34 Cooling valve

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 少なくとも真空チャンバと該真空チャン
バ内の雰囲気制御手段とを備えた液晶注入装置におい
て、 前記真空チャンバと前記雰囲気制御手段とを結ぶ経路中
に加熱手段を備えたことを特徴とする液晶注入装置。1. A liquid crystal injection device having at least a vacuum chamber and atmosphere control means in the vacuum chamber, wherein a heating means is provided in a path connecting the vacuum chamber and the atmosphere control means. Liquid crystal injection device. 【請求項２】 真空チャンバを用いて一対の基板をシー
ル材を介して貼り合わせた液晶表示パネル内に液晶材料
を注入する液晶注入方法において、 前記真空チャンバ内に、加熱された気体を導入して液晶
材料を加熱することを特徴とする液晶注入方法。2. A liquid crystal injection method for injecting a liquid crystal material into a liquid crystal display panel in which a pair of substrates are bonded to each other via a sealant using a vacuum chamber, wherein a heated gas is introduced into the vacuum chamber. Heating the liquid crystal material by heating. 【請求項３】 前記液晶材料の加熱を、前記真空チャン
バ内が真空状態から大気圧に移行した後、または移行途
中に行なうことを特徴とする請求項２に記載の液晶注入
方法。3. The liquid crystal injection method according to claim 2, wherein the heating of the liquid crystal material is performed after or during the transition from the vacuum state to the atmospheric pressure in the vacuum chamber.
JP5472798A 1998-03-06 1998-03-06 Liquid crystal injection device and liquid crystal injection method Pending JPH11249156A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5472798A JPH11249156A (en) 1998-03-06 1998-03-06 Liquid crystal injection device and liquid crystal injection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5472798A JPH11249156A (en) 1998-03-06 1998-03-06 Liquid crystal injection device and liquid crystal injection method

Publications (1)

Publication Number Publication Date
JPH11249156A true JPH11249156A (en) 1999-09-17

Family

ID=12978846

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5472798A Pending JPH11249156A (en) 1998-03-06 1998-03-06 Liquid crystal injection device and liquid crystal injection method

Country Status (1)

Country Link
JP (1) JPH11249156A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005275043A (en) * 2004-03-25 2005-10-06 Casio Comput Co Ltd Liquid crystal injecting method and apparatus therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005275043A (en) * 2004-03-25 2005-10-06 Casio Comput Co Ltd Liquid crystal injecting method and apparatus therefor
JP4665416B2 (en) * 2004-03-25 2011-04-06 カシオ計算機株式会社 Liquid crystal injection method and apparatus.

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