JPH0575742U - Liquid crystal resistivity monitor in liquid crystal injection device - Google Patents
Liquid crystal resistivity monitor in liquid crystal injection deviceInfo
- Publication number
- JPH0575742U JPH0575742U JP1510892U JP1510892U JPH0575742U JP H0575742 U JPH0575742 U JP H0575742U JP 1510892 U JP1510892 U JP 1510892U JP 1510892 U JP1510892 U JP 1510892U JP H0575742 U JPH0575742 U JP H0575742U
- Authority
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- Japan
- Prior art keywords
- liquid crystal
- crystal cell
- dish
- cell
- chamber
- 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.)
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- Measurement Of Resistance Or Impedance (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
(57)【要約】
【目的】 液晶セル６内への液晶３の注入に際して、常
時液晶皿２内の液晶３の比抵抗値を測定し、適切な比抵
抗値を有する液晶３を液晶セル６内に注入できるように
する。
【構成】 液晶３が入れられる液晶皿２の内底面２ａに
凹部１３が形成され、これに一対の電極１４ａ，１４ｂ
が設けられ、これに直流電源１７および電流計１８が接
続される。
(57) [Summary] [Objective] When injecting the liquid crystal 3 into the liquid crystal cell 6, the specific resistance value of the liquid crystal 3 in the liquid crystal dish 2 is constantly measured, and the liquid crystal 3 having an appropriate specific resistance value is measured. So that it can be injected inside. [Structure] A recess 13 is formed in an inner bottom surface 2a of a liquid crystal dish 2 in which a liquid crystal 3 is placed, and a pair of electrodes 14a and 14b is formed in the recess 13.
Is provided, and the DC power supply 17 and the ammeter 18 are connected thereto.
Description
【０００１】[0001]
この考案は液晶セル内に液晶を注入して、いわゆるＬＣＤを製造する場合に使 用する液晶注入装置に適用して好適な液晶比抵抗モニタ装置にに関する。 The present invention relates to a liquid crystal resistivity monitor device suitable for application to a liquid crystal injecting device used when a so-called LCD is manufactured by injecting liquid crystal into a liquid crystal cell.
【０００２】[0002]
従来この種の液晶注入装置は図３に示すように、ステンレスなどの金属材料で 構成されたチャンバー１内に液晶皿２が収納され、これに液晶３が入れられてい る。液晶皿２の上部には上下動機構４が設けられ、その下部の着脱機構５に液晶 セル６が着脱自在に取り付けられ、吊り下げられている。液晶セル６は図４に示 すように、一対の透明板７ａおよび７ｂが少許の間隙８を保持し、互いに対向し た状態で配置されたもので、透明板７ａおよび７ｂの内面には図示しないが透明 電極がそれぞれ被着されている。チャンバー１には弁９を介して真空ポンプ１０ が連結され、さらに弁１１を介して不活性ガス室１２が連結されている。不活性 ガスとしてはＮ2 ガスを使用できる。As shown in FIG. 3, a liquid crystal injecting device of this type conventionally has a liquid crystal tray 2 housed in a chamber 1 made of a metal material such as stainless steel, and a liquid crystal 3 placed therein. A vertical movement mechanism 4 is provided on the upper portion of the liquid crystal dish 2, and a liquid crystal cell 6 is detachably attached to the attachment / detachment mechanism 5 below the liquid crystal cell 2 and is suspended. As shown in FIG. 4, the liquid crystal cell 6 is composed of a pair of transparent plates 7a and 7b, which are arranged so as to face each other with a small gap 8 therebetween, and are shown on the inner surfaces of the transparent plates 7a and 7b. No, but each transparent electrode is applied. A vacuum pump 10 is connected to the chamber 1 via a valve 9, and an inert gas chamber 12 is connected to the chamber 1 via a valve 11. N 2 gas can be used as the inert gas.
【０００３】 液晶の注入方法は、弁９を開いて真空ポンプ１０でチャンバー１内を真空状態 にし、弁９を閉じてから図示するように液晶セル６の液晶注入部７ｃを液晶３内 に進入させ、弁１１を開いてＮ2 ガスをチャンバー１内に徐々にリークさせる。 これにより液晶セル６外の圧力（気圧）が液晶セル６内の圧力より高くなるので 、液晶注入部７ｃより液晶セル６内に液晶３が注入される。To inject the liquid crystal, the valve 9 is opened, the chamber 1 is evacuated by the vacuum pump 10, the valve 9 is closed, and then the liquid crystal injection portion 7 c of the liquid crystal cell 6 enters the liquid crystal 3 as shown in the figure. Then, the valve 11 is opened to gradually leak N 2 gas into the chamber 1. As a result, the pressure (atmospheric pressure) outside the liquid crystal cell 6 becomes higher than the pressure inside the liquid crystal cell 6, so that the liquid crystal 3 is injected into the liquid crystal cell 6 from the liquid crystal injection portion 7c.
【０００４】[0004]
液晶３の比抵抗はＬＣＤの表示に大きく影響するため、液晶材料の比抵抗の管 理は極めて重要である。しかしながら従来この液晶材料の比抵抗を測定する場合 は、チャンバー１内を真空引きする以前に液晶皿２内の液晶３を取り出し、金属 セルに注入し、ここで比抵抗の測定を行っている。従って測定作業に手数を要し 、液晶３の液晶セル６内への注入中などでは測定作業ができず、また液晶材料中 に不純物が入り易いために測定値に誤差が生じ易いなどの問題点があった。この 考案は上述した問題点を解決した液晶注入装置における液晶比抵抗モニタ装置を 提案したものである。 Since the specific resistance of the liquid crystal 3 has a great influence on the display of the LCD, the management of the specific resistance of the liquid crystal material is extremely important. However, conventionally, when measuring the specific resistance of this liquid crystal material, the liquid crystal 3 in the liquid crystal dish 2 is taken out and injected into a metal cell before the chamber 1 is evacuated, and the specific resistance is measured here. Therefore, the measurement work is troublesome, and the measurement work cannot be performed during the injection of the liquid crystal 3 into the liquid crystal cell 6, and an error is likely to occur in the measurement value because impurities easily enter the liquid crystal material. was there. This invention proposes a liquid crystal resistivity monitor device in a liquid crystal injection device which solves the above-mentioned problems.
【０００５】[0005]
上述の課題を解決するためこの考案においては、液晶セル６を液晶皿２の上方 から降下させて、液晶セル６の液晶注入部７ｃを液晶３内に進入させる上下動機 構４と、液晶皿２および上下動機構４により吊り下げられた液晶セル６を外界と 遮断するチャンバー１から構成され、液晶セル６をチャンバー１内で真空にした 後、液晶注入部７ｃを液晶３内に進入させた状態で、不活性ガスをリークさせる ことにより、液晶３を液晶セル６内に注入する液晶注入装置において、液晶皿２ の一部に、液晶３に電流を通すための一対の電極１４ａ，１４ｂを配置し、この 一対の電極１４ａ，１４ｂを通る電流を測定器としての電流計１８で測定するこ とにより比抵抗値を測定することを特徴としたものである。 In order to solve the above-mentioned problems, in the present invention, the liquid crystal cell 6 is lowered from above the liquid crystal dish 2, and the vertical movement mechanism 4 for allowing the liquid crystal injection portion 7c of the liquid crystal cell 6 to enter the liquid crystal 3 and the liquid crystal dish 2 are provided. And a state in which the liquid crystal cell 6 hung by the vertical movement mechanism 4 is constituted by a chamber 1 which shuts off the liquid crystal cell from the outside, and after the liquid crystal cell 6 is evacuated in the chamber 1, the liquid crystal injection part 7c is made to enter the liquid crystal 3. In the liquid crystal injecting device for injecting the liquid crystal 3 into the liquid crystal cell 6 by leaking the inert gas, a pair of electrodes 14a and 14b for passing an electric current through the liquid crystal 3 is arranged in a part of the liquid crystal dish 2. The specific resistance value is measured by measuring the current passing through the pair of electrodes 14a and 14b with an ammeter 18 as a measuring instrument.
【０００６】[0006]
液晶皿２に一対の電極１４ａ，１４ｂが設けられており、これに直流電源１７ および測定器としての電流計１８が接続されているので、液晶セル６内への液晶 ３の注入時および注入時以外を問わず、常時液晶皿２内の液晶３の比抵抗を測定 することができる。結果的には適切な比抵抗値を有する液晶３を液晶セル６内に 注入できる。 Since a pair of electrodes 14a and 14b are provided on the liquid crystal dish 2 and a direct current power supply 17 and an ammeter 18 as a measuring instrument are connected to the electrodes, a liquid crystal 3 is injected into the liquid crystal cell 6 and at the time of injection. Regardless of the above, the specific resistance of the liquid crystal 3 in the liquid crystal dish 2 can always be measured. As a result, the liquid crystal 3 having an appropriate specific resistance value can be injected into the liquid crystal cell 6.
【０００７】[0007]
この考案に係わる液晶注入装置における液晶比抵抗モニタ装置の一例を図１〜 図２を参照して説明する。ただし図３および図４と対応する部分には同一符号を 付加してその説明を省略する。この考案では図３に示す従来の装置に対してさら に以下説明する装置が付加されたものである。図２は図３で示される液晶皿２を 示した上面図であり、図１は図２のＡ−Ａ線上の断面図である。何れの図におい ても上下機構４およびチャンバー１などは省略してある。 An example of the liquid crystal resistivity monitor device in the liquid crystal injection device according to the present invention will be described with reference to FIGS. However, the portions corresponding to those in FIGS. 3 and 4 are designated by the same reference numerals and the description thereof will be omitted. In this invention, a device described below is added to the conventional device shown in FIG. 2 is a top view showing the liquid crystal dish 2 shown in FIG. 3, and FIG. 1 is a sectional view taken along the line AA of FIG. The vertical mechanism 4 and the chamber 1 are omitted in any of the drawings.
【０００８】 この考案では液晶皿２の内底面２ａに凹部１３が形成され、この凹部１３内に 一対の電極１４ａ，１４ｂが設けられ、これらの電極１４ａ，１４ｂから端子１ ６ａ，１６ｂまで液晶皿２の内底面２ａに沿わされてそれぞれリード線１５ａ， １５ｂが導出されている。端子１６ａ，１６ｂ間には直流電源１７および測定器 として直流電流計１８が接続されている。この直流電源１７および直流電流計１ ８はチャンバー１の外部に設けられる。In this invention, a concave portion 13 is formed on the inner bottom surface 2a of the liquid crystal dish 2, and a pair of electrodes 14a and 14b are provided in the concave portion 13. From the electrodes 14a and 14b to the terminals 16a and 16b, Lead wires 15a and 15b are led out along the inner bottom surface 2a of the lead wire 2. A DC power supply 17 and a DC ammeter 18 as a measuring device are connected between the terminals 16a and 16b. The DC power supply 17 and the DC ammeter 18 are provided outside the chamber 1.
【０００９】 液晶皿２としてはテフロンなどの合成樹脂が使用され、電極１４ａ，１４ｂと しては例えばステンレスが使用され、リード線１５ａ，１５ｂとしては例えばス テンレスが使用される。凹部１３はこの内部に配置される電極１４ａ，１４ｂの それぞれの面積が１ｃｍ2 以上であり、両電極間の距離が１ｍｍ以下となる大き さであることが望ましい。The liquid crystal dish 2 is made of synthetic resin such as Teflon, the electrodes 14a and 14b are made of stainless steel, and the lead wires 15a and 15b are made of stainless steel. It is desirable that the recess 13 has a size such that the area of each of the electrodes 14a and 14b arranged therein is 1 cm 2 or more, and the distance between both electrodes is 1 mm or less.
【００１０】 なお上例では電極１４ａ，１４ｂは凹部１３内で互いに対向させた場合である が、液晶皿２の内底面２ａ上（即ち一平面上）に単に並べて配置してもよい。こ の場合は凹部１３は不要である。しかしながら比抵抗の測定は微少電流（μＡの オーダ）のため、対向電極１４ａ，１４ｂ間の距離およびそれらの面積を確定し て測定に便利となるようにする必要があり、このためには上述した凹部１３内に 電極を配置するのがよい。In the above example, the electrodes 14a and 14b are opposed to each other in the recess 13. However, they may be simply arranged on the inner bottom surface 2a of the liquid crystal dish 2 (that is, on one plane). In this case, the recess 13 is unnecessary. However, since the measurement of the specific resistance is a minute current (on the order of μA), it is necessary to determine the distance between the counter electrodes 14a and 14b and the area between them to make it convenient for the measurement. It is preferable to dispose the electrode in the recess 13.
【００１１】 液晶セル６内への液晶３の注入に際しては、従来と同様にチャンバー１内を真 空にしてから液晶セル６の液晶注入部７ｃを液晶３内に進入させ、Ｎ2 ガスをチ ャンバー１内にリークさせる。この場合電極１４ａ，１４ｂ間に電源１７と電流 計１８とが接続され、液晶３を通じて常時電流が流れているので、その電流値が 電流計１８により常時読み取られる。よってこの電流値から液晶３の比抵抗値を 計算できる。勿論電流計１８には電流値の他に換算した比抵抗値を目盛っておい てもよい。When injecting the liquid crystal 3 into the liquid crystal cell 6, the interior of the chamber 1 is evacuated as before, and the liquid crystal injecting portion 7 c of the liquid crystal cell 6 is allowed to enter the liquid crystal 3 to flush the N 2 gas. Leak into chamber 1. In this case, since the power supply 17 and the ammeter 18 are connected between the electrodes 14a and 14b and the current is constantly flowing through the liquid crystal 3, the current value is constantly read by the ammeter 18. Therefore, the specific resistance value of the liquid crystal 3 can be calculated from this current value. Of course, the ammeter 18 may be scaled with a converted specific resistance value in addition to the current value.
【００１２】 液晶３の注入に際しては液晶セル６の液晶注入部７ｃは上述した凹部１３にな るべく近接したほうがよく、測定値に近い値をもつ液晶３を液晶セル６内に注入 できる。この液晶注入部７ｃは液晶３の上面から約２〜５ｍｍ程度がよい。これ は上面に近い部分の液晶３では気体中の不純物が液晶３内に取り込まれている可 能性が大きく、これが液晶セル６内に注入されるおそれがあるからである。When injecting the liquid crystal 3, the liquid crystal injecting portion 7c of the liquid crystal cell 6 should be as close as possible to the above-mentioned recess 13 so that the liquid crystal 3 having a value close to the measured value can be injected into the liquid crystal cell 6. The liquid crystal injection portion 7c is preferably about 2 to 5 mm from the upper surface of the liquid crystal 3. This is because the liquid crystal 3 near the upper surface has a high possibility that impurities in the gas are taken into the liquid crystal 3, and this may be injected into the liquid crystal cell 6.
【００１３】 この構成によれば、液晶３の比抵抗は液晶３の液晶セル６への注入時および注 入時以外にかかわらず、チャンバー１内を真空引きするときなど常時測定するこ とができ、液晶３の比抵抗が望ましい値でない場合は直ちに注入作業を中止して これを交換するなどの処置を行うことができる。According to this configuration, the specific resistance of the liquid crystal 3 can be measured at any time such as when the chamber 1 is evacuated, regardless of whether the liquid crystal 3 is injected into the liquid crystal cell 6 or not. If the specific resistance of the liquid crystal 3 is not a desired value, the injection work can be immediately stopped and the liquid crystal 3 can be replaced.
【００１４】[0014]
この考案に係わる液晶注入装置における液晶比抵抗モニタ装置によれば、液晶 ３の比抵抗の測定を真空にしたチャンバー１内で行うので、この液晶３内に不純 物が入る可能性が少なくなる効果があり、液晶３の液晶セル６内への注入前およ び注入工程中の如何に係わらず常時測定が可能であるから、適切な比抵抗をもつ 液晶３を液晶セル６内に確実に注入できる効果がある。 According to the liquid crystal resistivity monitor in the liquid crystal injection device according to the present invention, since the resistivity of the liquid crystal 3 is measured in the chamber 1 which is evacuated, the possibility of impurities entering the liquid crystal 3 is reduced. Therefore, the liquid crystal 3 can be constantly measured regardless of whether it is injected into the liquid crystal cell 6 or during the injection process. Therefore, the liquid crystal 3 having an appropriate specific resistance can be surely injected into the liquid crystal cell 6. There is an effect that can be.
【図１】この考案に係るわ液晶注入装置における液晶比
抵抗モニタ装置に使用できる液晶皿の一例を示す平面
図。FIG. 1 is a plan view showing an example of a liquid crystal dish that can be used for a liquid crystal resistivity monitor device in a liquid crystal injection device according to the present invention.
【図２】図１のＡ−Ａ線上の断面図。FIG. 2 is a sectional view taken along the line AA of FIG.
【図３】従来の液晶注入装置の一例を示す略線的断面
図。FIG. 3 is a schematic cross-sectional view showing an example of a conventional liquid crystal injection device.
【図４】図４の一部分の拡大断面図。FIG. 4 is an enlarged cross-sectional view of a portion of FIG.
Claims (1)
て、上記液晶セルの液晶注入部を液晶皿内の液晶内に進
入させる上下動機構と、 上記液晶皿および上記上下動機構により吊り下げられた
液晶セルを外界と遮断するチャンバーとから構成され、 上記液晶セルを上記チャンバー内に入れ、真空にした
後、液晶注入部を上記液晶内に進入させ、不活性ガスを
リークさせることにより、上記液晶を液晶セル内に注入
する液晶注入装置において、 上記液晶の比抵抗を測定するため、上記液晶皿の一部に
配置された一対の電極と、 この一対の電極を通る電流を測定する測定器と、 を有することを特徴とする液晶注入装置における液晶比
抵抗モニタ装置。1. A vertical movement mechanism for lowering a liquid crystal cell from above a liquid crystal dish so that a liquid crystal injection portion of the liquid crystal cell enters into liquid crystal in the liquid crystal dish; and a liquid crystal tray and the vertical movement mechanism for suspending the liquid crystal cell. It is composed of a chamber that shields the liquid crystal cell from the outside world, put the liquid crystal cell in the chamber, and after evacuating, let the liquid crystal injection part enter the liquid crystal, by leaking an inert gas, In a liquid crystal injecting device for injecting the liquid crystal into a liquid crystal cell, in order to measure the specific resistance of the liquid crystal, a pair of electrodes arranged in a part of the liquid crystal dish and a measurement of a current passing through the pair of electrodes. A liquid crystal resistivity monitor in a liquid crystal injecting device, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992015108U JP2569288Y2 (en) | 1992-03-23 | 1992-03-23 | Liquid crystal resistivity monitor in liquid crystal injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992015108U JP2569288Y2 (en) | 1992-03-23 | 1992-03-23 | Liquid crystal resistivity monitor in liquid crystal injection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0575742U true JPH0575742U (en) | 1993-10-15 |
| JP2569288Y2 JP2569288Y2 (en) | 1998-04-22 |
Family
ID=11879644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992015108U Expired - Lifetime JP2569288Y2 (en) | 1992-03-23 | 1992-03-23 | Liquid crystal resistivity monitor in liquid crystal injection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2569288Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6417629A (en) * | 1987-07-10 | 1989-01-20 | Nippon Zeon Co | Blood flow rate measuring apparatus |
| JPH02244118A (en) * | 1989-03-17 | 1990-09-28 | Fujitsu Ltd | Production of liquid crystal display panel |
-
1992
- 1992-03-23 JP JP1992015108U patent/JP2569288Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6417629A (en) * | 1987-07-10 | 1989-01-20 | Nippon Zeon Co | Blood flow rate measuring apparatus |
| JPH02244118A (en) * | 1989-03-17 | 1990-09-28 | Fujitsu Ltd | Production of liquid crystal display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2569288Y2 (en) | 1998-04-22 |
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