JPS62205317A - Degasing apparatus for liquid crystal - Google Patents
Degasing apparatus for liquid crystalInfo
- Publication number
- JPS62205317A JPS62205317A JP4892486A JP4892486A JPS62205317A JP S62205317 A JPS62205317 A JP S62205317A JP 4892486 A JP4892486 A JP 4892486A JP 4892486 A JP4892486 A JP 4892486A JP S62205317 A JPS62205317 A JP S62205317A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- tank
- tube
- pressure
- reduced
- 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 60
- 229920005672 polyolefin resin Polymers 0.000 claims abstract description 3
- 238000007872 degassing Methods 0.000 claims description 21
- 230000006837 decompression Effects 0.000 claims description 13
- 239000012982 microporous membrane Substances 0.000 claims description 5
- 238000003860 storage Methods 0.000 abstract description 5
- 229920005989 resin Polymers 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000011109 contamination Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000565 sealant 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
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
この発明は、液晶中に溶解した気体を分離して排除する
液晶の脱気装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a liquid crystal degassing device that separates and eliminates gas dissolved in liquid crystal.
近年、計測機器や家電機器などの分野において液晶表示
装置が広（普及し、活用されている。この種の液晶表示
装置は、それぞれ内面に電極を備える一対の透明基板を
枠状の封止材を間に挟んで結合することにより空のセル
を構成し、このセルの内部つまり封止材と各透明・基板
とで囲まれる空間内に液晶を注入して製造するものであ
る。In recent years, liquid crystal display devices have become widespread and utilized in fields such as measuring instruments and home appliances.This type of liquid crystal display device consists of a pair of transparent substrates, each with electrodes on the inner surface, and a frame-shaped sealing material. These cells are bonded together to form an empty cell, and liquid crystal is injected into the inside of this cell, that is, into the space surrounded by the sealing material and each transparent substrate.
このような製造時において重要なことは、液晶中に溶解
した気体を充分に取除いて液晶をセルに注入することで
ある。気体が溶解したまま液晶を注入してしまうと、セ
ル内に気泡が発生し、画像等の表示の支障となり、また
注入不足などの不良を招いてしまう。What is important during such manufacturing is to sufficiently remove the gas dissolved in the liquid crystal before injecting the liquid crystal into the cell. If the liquid crystal is injected while the gas is dissolved, bubbles will be generated within the cell, which will hinder the display of images and the like, and will also lead to defects such as insufficient injection.
そこで従来においては、液晶を皿やビー力などの容器に
収容し、これを減圧槽内に入れて減圧し、この減圧に基
づいて液晶中の気体を分離して排除し、つまり脱気し、
このように脱気した液晶をセルに注入している。Therefore, in the past, liquid crystal was placed in a container such as a dish or a container, and the container was placed in a vacuum tank to reduce the pressure.Based on this pressure reduction, the gas in the liquid crystal was separated and eliminated, that is, it was degassed.
The degassed liquid crystal is injected into the cell.
しかしながらこのような手段においては、いちいち手作
業で液晶を容器に収容し、これを減圧槽内に挿入しなけ
ればならないから、作業能率が悪く、また容器に蓋をす
ると液晶に対する減圧の妨げとなるから蓋の装着を避け
なければならず、この結果、容器を減圧槽内に挿入する
際に液晶が容器から飛散しやすく、このため異種の液晶
を収容した複数の容器を同一の減圧槽内に挿入して脱気
を行なうことが困難となり、これによりさらに作業能率
が低下してしまう。そして、容器から液晶が飛散すると
、減圧槽の内部が液晶で汚染され、したがって減圧槽の
内部を頻繁に清掃する必要が生じてしまう。また、液晶
が開放状態の容器に収容される関係で、この内部に塵埃
等の異物が混入し、液晶の品質を低下させてしまう恐れ
があった。However, with this method, the liquid crystal must be placed in a container by hand and then inserted into a vacuum tank, which is inefficient, and if the container is covered, it will interfere with the vacuum being applied to the liquid crystal. As a result, the liquid crystal tends to scatter from the container when the container is inserted into the vacuum tank, and for this reason, multiple containers containing different types of liquid crystals should not be placed in the same vacuum tank. It becomes difficult to insert and degas, which further reduces work efficiency. When the liquid crystal scatters from the container, the inside of the vacuum tank becomes contaminated with the liquid crystal, and therefore the inside of the vacuum tank needs to be cleaned frequently. Further, since the liquid crystal is housed in an open container, there is a risk that foreign matter such as dust may enter the container and deteriorate the quality of the liquid crystal.
（発明の目的〕
この発明はこのような点に着目してなされたもので、そ
の目的とするところは、煩しい手作業を何ら要すること
なく、また異種の液晶においても同時に、さらに減圧槽
の内部に対する汚染や、液晶に対する異物の混入を確実
に防止して、液晶中に溶解した気体を能率的に脱気する
ことができるようにした液晶の脱気装置を提供すること
にある。(Objective of the Invention) This invention has been made with attention to the above points, and its purpose is to eliminate the need for any troublesome manual work, to simultaneously handle different types of liquid crystals, and to reduce pressure in a vacuum tank. An object of the present invention is to provide a liquid crystal degassing device that can efficiently degas the gas dissolved in the liquid crystal while reliably preventing contamination of the inside and mixing of foreign matter into the liquid crystal.
すなわちこの発明は、減圧槽内に、ポリオレフィン系樹
脂からなる微多孔膜で形成した脱気チューブを設け、上
記減圧槽内を減圧した状態で、この脱気チューブ内に液
晶を導入し、この液晶中に溶解した気体を上記減圧に基
づいて脱気チューブの周壁面を通して排除するようにし
たものである。That is, in this invention, a degassing tube formed of a microporous membrane made of polyolefin resin is provided in a vacuum tank, and a liquid crystal is introduced into the degassing tube while the pressure in the vacuum tank is reduced. The gas dissolved therein is removed through the peripheral wall surface of the degassing tube based on the reduced pressure.
以下、この発明の一実施例について図面を参照して説明
する。An embodiment of the present invention will be described below with reference to the drawings.
図中１は脱気用の減圧槽で、この減圧槽１に真空ポンプ
２が接続し、この真空ポンプ２の作動で減圧槽１の内部
を減圧することができるようになっている。そしてこの
減圧槽１の内部に例えば二本の脱気チューブ３．３が設
けられ、これら脱気チューブ３．３の一端に導入管４ａ
、４ａが、他端に導出管４ｂ、４ｂがそれぞれ取付けら
れ、これら導入管４ａ 、４ａおよび導出管４ｂ、４ｂ
が減圧槽１の壁面をそれぞれ気密的に貫通して外部に突
出している。脱気チューブ３．３は、気体のみを通し、
液体は通さない微多孔膜で形成されている。この微多孔
膜はポリオレフィン系高分子を材料とした厚さが５０〜
２００４ｍ、平均孔径が０．１５〜０．５ｕｍ、空気孔
率が７０〜９０％の微多孔質膜であり、空気透過性はＡ
ＳＴＭ−Ｄ−７２６（ガーレ式）の試験で１０〜２３０
８ｅＣ／ １００ｃｃ、枚 である。このような微多孔
質膜は、例えば旭化成工業株式会社製ハイボアー２００
゜３０００ （商品名）として提供されている。In the figure, reference numeral 1 denotes a depressurizing tank for degassing, and a vacuum pump 2 is connected to this depressurizing tank 1, so that the inside of the decompressing tank 1 can be depressurized by the operation of this vacuum pump 2. For example, two deaeration tubes 3.3 are provided inside this decompression tank 1, and one end of these deaeration tubes 3.3 is connected to an introduction pipe 4a.
, 4a, and outlet pipes 4b, 4b are attached to the other end thereof, and these inlet pipes 4a, 4a and outlet pipes 4b, 4b
penetrate the wall surface of the decompression tank 1 in an airtight manner and protrude to the outside. The degassing tube 3.3 passes only gas,
It is made of a microporous membrane that does not allow liquid to pass through. This microporous membrane is made of polyolefin polymer and has a thickness of 50~
2004m, the average pore diameter is 0.15-0.5um, the air porosity is 70-90%, and the air permeability is A.
10-230 in STM-D-726 (Gurley method) test
8eC/100cc, sheet. Such a microporous membrane is, for example, HiBore 200 manufactured by Asahi Kasei Corporation.
It is provided as ゜3000 (product name).
５．５は液晶を収容した貯留槽で、これら貯留槽５．５
から供給管６．６が導出し、これら供給管６．６が上記
脱気チューブ３．３の導入管４ａ。5.5 is a storage tank containing liquid crystal, and these storage tanks 5.5
Supply pipes 6.6 lead out from the inlet pipe 4a of the degassing tube 3.3.
４ａに接続され、またこれら供給管６．６の途中に供給
ポンプ７．７が設けられている。4a, and a supply pump 7.7 is provided in the middle of these supply pipes 6.6.
８．８は液晶注入用の減圧槽で、これら減圧槽８．８の
内部にそれぞれホルダ９．９を介して空のセル１０．１
０が収納保持されている。そしてこれら減圧槽８．８か
ら注入管１１．１１が導出し、これら注入管１１．１１
の一端が脱気チューブ３．３の導出管４ｂ、４ｂに、ま
た他端が減圧槽８．８の内部において液晶溜１１ａ、１
１ａにそれぞれ接続し、これら液晶溜’ｉｉａ、１ｉａ
に液晶にセル１０．１０の液晶注入口（図示せず）がそ
れぞれ対向している。なお、１’２．１２は減圧槽８．
８内の空気を吸引する真空ポンプ、１３゜１３は減圧槽
８．８内を大気中に連通させる通気管、１４．１４はこ
れら通気管１３．１３の途中に設けられた開閉コックで
ある。8.8 is a vacuum tank for liquid crystal injection, and empty cells 10.1 are placed inside each of these vacuum tanks 8.8 via a holder 9.9.
0 is stored and held. Injection pipes 11.11 are led out from these decompression tanks 8.8, and these injection pipes 11.11
One end is connected to the outlet pipe 4b, 4b of the degassing tube 3.3, and the other end is connected to the liquid crystal reservoir 11a, 1 inside the decompression tank 8.8.
1a, and these liquid crystal reservoirs 'iia, 1ia
The liquid crystal inlets (not shown) of the cells 10 and 10 respectively face the liquid crystal. In addition, 1'2.12 is the pressure reduction tank 8.
13. 13 is a ventilation pipe that communicates the inside of the decompression tank 8.8 with the atmosphere. 14.14 is an opening/closing cock provided in the middle of these ventilation pipes 13.13.
次に、動作について説明する。Next, the operation will be explained.
まず、真空ポンプ２を作動させ、脱気用の減圧槽１内の
空気を吸引して１Ｔｏｒｒ程度の圧力に減圧する。また
、貯留槽５．５内に貯留した液晶を供給ポンプ７．７を
作動させて供給管６，６から導入管４ａ、４ａを通して
脱気チューブ３．３内に導入する。脱気チューブ３．３
は微多孔質性の高分子材料で形成され、また減圧槽１内
が減圧されているから、液晶が脱気チューブ３．３内に
導入するのに伴い、この液晶中に溶解した気体がその圧
力差で分離し、脱気チューブ３．３の周壁面を通して排
除される。First, the vacuum pump 2 is operated to suck the air in the depressurizing tank 1 for degassing and reduce the pressure to about 1 Torr. Further, the liquid crystal stored in the storage tank 5.5 is introduced into the degassing tube 3.3 from the supply pipes 6, 6 through the introduction pipes 4a, 4a by operating the supply pump 7.7. Deaeration tube 3.3
is made of a microporous polymeric material, and since the pressure inside the vacuum tank 1 is reduced, as the liquid crystal is introduced into the degassing tube 3.3, the gas dissolved in the liquid crystal is It separates due to the pressure difference and is expelled through the circumferential wall of the degassing tube 3.3.
ついで、真空ポンプ１２．１２を作動させ、注入用の減
圧槽８．８内およびセル１０．１０内をＱ、１Ｔｏｒｒ
程度の圧力に減圧し、またセル１０．１０の注入口を液
晶溜１１８．１１ａ内の液晶に接触させ、こののち開閉
コック１４．１４を開放し、減圧槽８．８内を大気中に
連通させる。Next, the vacuum pump 12.12 is operated to reduce the pressure inside the injection pressure tank 8.8 and the inside of the cell 10.10 to Q, 1 Torr.
Then, the injection port of the cell 10.10 is brought into contact with the liquid crystal in the liquid crystal reservoir 118.11a, and the opening/closing cock 14.14 is then opened to communicate the inside of the decompression tank 8.8 to the atmosphere. let
＝６−
これに伴い液晶が、セル１０．１０の内外の圧力差でセ
ル１０．１０内に吸入される。そしてこののちセル１０
．１０の注入口を封止材で封止する。=6- Accordingly, the liquid crystal is sucked into the cell 10.10 due to the pressure difference between the inside and outside of the cell 10.10. And after this cell 10
．． 10 injection ports are sealed with a sealant.
このように、液晶を脱気デユープ３．３内に導入するだ
けで、その液晶中の気体を分離して排除でき、したがっ
て煩しい手作業が不要で、作業能率が大幅に向上する。In this way, simply by introducing the liquid crystal into the degassing duplex 3.3, the gas in the liquid crystal can be separated and removed, thus eliminating the need for troublesome manual work and greatly improving work efficiency.
そして、液晶が密閉構造の流通経路を流通するのみであ
るから、液晶の飛散という問題が起り得す、このため同
一の減圧槽１内において異種の液晶を対象にして気体の
排除を行なうことができる。すなわち、貯留槽５．５に
異種の液晶を収容し、これらを同時に同一の減圧槽１内
の脱気チューブ３．３に導入して効率的に気体の排除を
図ることができるのである。また液晶が飛散するような
ことがないから、減圧槽１内を汚染することもなく、さ
らに液晶が密閉ｍ造の流通経路を流通するのみであるか
ら、この液晶に異物が混入する恐れも全くなく、したが
って液晶の品質を常に良好に保ってセル１０．１０に注
入することができる。Since the liquid crystal only flows through a closed distribution channel, the problem of liquid crystal scattering may occur.For this reason, it is difficult to remove gas from liquid crystals of different types in the same decompression tank 1. can. That is, different types of liquid crystals can be stored in the storage tank 5.5 and simultaneously introduced into the degassing tube 3.3 in the same decompression tank 1 to efficiently remove gas. Furthermore, since the liquid crystal does not scatter, there is no possibility of contaminating the inside of the decompression tank 1, and since the liquid crystal only flows through a closed distribution channel, there is no risk of foreign matter getting into the liquid crystal. Therefore, the liquid crystal can be injected into the cell 10.10 while maintaining good quality at all times.
なお、上記実施例においては、減圧槽１内に二本の脱気
チューブ３゜３を配設したが、これは一本でも、三本、
或いはそれ以上の本数を配設することも可能である。In the above embodiment, two degassing tubes 3°3 were provided in the decompression tank 1, but this may be one, three, or three degassing tubes.
Alternatively, it is also possible to arrange a larger number.
以上説明したようにこの発明によれば、煩しい手作業を
何ら要することなく、単に減圧槽内の脱気チューブに液
晶を導入するのみでよく、したがって作業能率の大幅な
向上を図れ、また液晶の飛散の恐れがないから、異種の
液晶に対して同時に同一の減圧槽内で効率的に脱気を行
なうことが可能であるとともに、減圧槽の汚染を防止で
き、さらに液晶に対する異物の混入を防止して常に液晶
の品質を良好に保つことができるという効果を奏する。As explained above, according to the present invention, it is sufficient to simply introduce the liquid crystal into the degassing tube in the decompression tank without any troublesome manual work. Since there is no fear of liquid crystals scattering, it is possible to efficiently degas different types of liquid crystals at the same time in the same vacuum tank, prevent contamination of the vacuum tank, and further prevent foreign matter from entering the liquid crystal. This has the effect that the quality of the liquid crystal can always be maintained at a good level.
図はこの発明の一実施例を示す構成図である。 １・・・減圧槽、３・・・脱気チューブ。 The figure is a configuration diagram showing an embodiment of the present invention. 1...Reducing pressure tank, 3...Degassing tube.
Claims (1)
形成した脱気チューブを設け、上記減圧槽内を減圧した
状態で、この脱気チューブ内に液晶を導入することを特
徴とした液晶の脱気装置。A degassing tube made of a microporous membrane made of polyolefin resin is provided in a decompression tank, and the liquid crystal is introduced into the degassing tube while the pressure in the decompression tank is reduced. Air device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4892486A JPS62205317A (en) | 1986-03-06 | 1986-03-06 | Degasing apparatus for liquid crystal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4892486A JPS62205317A (en) | 1986-03-06 | 1986-03-06 | Degasing apparatus for liquid crystal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62205317A true JPS62205317A (en) | 1987-09-09 |
Family
ID=12816801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4892486A Pending JPS62205317A (en) | 1986-03-06 | 1986-03-06 | Degasing apparatus for liquid crystal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62205317A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55121806A (en) * | 1979-03-13 | 1980-09-19 | Jeol Ltd | Deaerator |
| JPS60254118A (en) * | 1984-05-31 | 1985-12-14 | Fujitsu Ltd | Liquid crystal injection device |
-
1986
- 1986-03-06 JP JP4892486A patent/JPS62205317A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55121806A (en) * | 1979-03-13 | 1980-09-19 | Jeol Ltd | Deaerator |
| JPS60254118A (en) * | 1984-05-31 | 1985-12-14 | Fujitsu Ltd | Liquid crystal injection device |
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