JPH0430124A - Filling up method for liquid crystal - Google Patents
Filling up method for liquid crystalInfo
- Publication number
- JPH0430124A JPH0430124A JP13519290A JP13519290A JPH0430124A JP H0430124 A JPH0430124 A JP H0430124A JP 13519290 A JP13519290 A JP 13519290A JP 13519290 A JP13519290 A JP 13519290A JP H0430124 A JPH0430124 A JP H0430124A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal cell
- vacuum
- cell
- tank
- 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.)
- Granted
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 title claims description 8
- 210000002858 crystal cell Anatomy 0.000 claims abstract description 51
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 238000005192 partition Methods 0.000 claims abstract description 5
- 238000001704 evaporation Methods 0.000 abstract description 5
- 230000008020 evaporation Effects 0.000 abstract description 5
- 230000006866 deterioration Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002301 combined effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000011800 void material Substances 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、液晶表示素子に使用される液晶セル内に液晶
を充填する方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of filling liquid crystal into a liquid crystal cell used in a liquid crystal display element.
液晶表示素子は、通常、２枚の電極基板を一定に離間し
て対向させ、その周辺をシール剤等によりシールして液
晶セルを形成し、上記対向する電極間に液晶を充填して
完成する。上記電極基板の外側には透明な偏光板が、ま
たカラー液晶表示素子の場合には、一方の電極基板の電
極にカラーフィルタが形成されている。A liquid crystal display element is usually completed by placing two electrode substrates facing each other at a constant distance, sealing the periphery with a sealant, etc. to form a liquid crystal cell, and filling the space between the facing electrodes with liquid crystal. . A transparent polarizing plate is formed on the outside of the electrode substrate, and in the case of a color liquid crystal display element, a color filter is formed on the electrode of one electrode substrate.
上記液晶セルに液晶を充填する方法は、第３図に示すよ
うに１眞空排気装置１内に、液晶２を有する液晶槽３と
一箇所のみの開放口４ａｔ−設けた液晶セル４を配置し
、眞空ポンプ５により眞空排気装ｆ１内を眞空度Ｉ Ｘ
１０−”曽ＨＩ程度の眞空になるように排気する。し
かる後、液晶セル４の開放口４ａｉ液晶２の中に浸入さ
せる。次に、弁６を開き、上記眞空を破ることにより液
晶２を液晶セル４内に充填させるものである（特開昭４
９−１３０７５６号公報）。The method for filling the liquid crystal cell with liquid crystal is as shown in FIG. , the vacuum pump 5 moves the interior of the vacuum exhaust system f1 to a vacuum level IX.
The liquid crystal 2 is evacuated to a level of about 10-inch HI.Then, the liquid crystal 2 is introduced into the opening 4ai of the liquid crystal cell 4.Next, the valve 6 is opened and the liquid crystal 2 is released by breaking the above-mentioned vacuum. It is filled into the liquid crystal cell 4 (Japanese Unexamined Patent Publication No. 4
9-130756).
上記従来の方法において、液晶セル４の部材に吸着され
た残留ガスは十分に排除されずに残ることがあり、この
ガスが僅かに残っていると、液晶充填後に気泡となって
現われ、液晶表示素子の表示品、ｉｌに劣下させる原因
となる。In the above conventional method, the residual gas adsorbed to the members of the liquid crystal cell 4 may not be sufficiently removed and may remain. If a small amount of this gas remains, it will appear as bubbles after filling the liquid crystal, and the liquid crystal display This may cause deterioration in the display quality and illumination of the device.
また、眞空排気装置１を眞空にする排気時間が１０時間
以上になると、液晶槽３の液晶２に含む成分の一部が蒸
発する分が多くなる。このような液晶２が液晶セル４に
充填されると、液晶が動作するしきい値が変わり、液晶
表示素子に表示むらが発生した抄、あるいは表示不能に
なるなどの問題が生じる。Furthermore, if the exhaust time during which the vacuum exhaust device 1 is completely emptied becomes 10 hours or more, a portion of the components contained in the liquid crystal 2 in the liquid crystal tank 3 will evaporate. When the liquid crystal cell 4 is filled with such liquid crystal 2, the threshold value at which the liquid crystal operates changes, causing problems such as uneven display on the liquid crystal display element or the inability to display.
本発明の目的は、液晶セルに有する残留ガスを確実に排
除すると共に、液晶槽に有する液晶の成分の蒸発を少く
する液晶の充填方法の提供により表示特性の優れた液晶
表示素子を得ることにある。An object of the present invention is to provide a liquid crystal filling method that reliably eliminates residual gas in a liquid crystal cell and reduces evaporation of liquid crystal components contained in a liquid crystal tank, thereby obtaining a liquid crystal display element with excellent display characteristics. be.
〔課題を解決するための手段〕
上記の目的は、眞空排気装置を、液晶セルが配置される
液晶セル配置部と液晶槽が配置される液晶槽配置部に分
けてなり、液晶セルを加熱しながら上記液晶セル配置眞
空に排気すると共に、上記液晶槽配置部を液晶セル配置
部と並行し、もしくは後順位にして眞空に排気し、次に
両配量部間の仕切り板を開放し、辰晶セルの開放口を液
晶槽の液晶に浸入させた後、上記眞空を破ることにより
、液晶セルに液晶を充填させることにより達成される。[Means for Solving the Problems] The above object is to separate the air exhaust system into a liquid crystal cell placement section where a liquid crystal cell is placed and a liquid crystal tank placement section where a liquid crystal tank is placed, and heat the liquid crystal cell. At the same time, the liquid crystal cell arrangement section is evacuated to a clear sky, and the liquid crystal tank arrangement section is placed in parallel with or after the liquid crystal cell arrangement section, and the partition plate between both dispensing sections is opened, and the This is achieved by allowing the open opening of the crystal cell to penetrate into the liquid crystal of the liquid crystal tank, and then breaking the void to fill the liquid crystal cell with liquid crystal.
上記の手段により、液晶セルを加熱させなから眞空に排
気するので、液晶セルの含有ガスが容易に除去される。By the above means, the gas contained in the liquid crystal cell is easily removed because the liquid crystal cell is evacuated to the sky without being heated.
また、液晶槽配置部を液晶セル配置部に並行し、もしく
は後順位にして眞空に排気するので、液晶槽が眞空雰囲
気にある時間が短くなり、液晶の含有成分の蒸発が少く
なる。従って、これらの総合作用により液晶表示素子の
性能低下の問題が解消できる。In addition, since the liquid crystal tank arrangement section is placed in parallel with or after the liquid crystal cell arrangement section and evacuated to a clear atmosphere, the time that the liquid crystal tank is in a clear atmosphere is shortened, and the evaporation of components contained in the liquid crystal is reduced. Therefore, the problem of deterioration in performance of the liquid crystal display element can be solved by these combined effects.
以下、本発明の一実施例を第１図および第２図により説
明する。なお、同図において、第３図と同一部材には同
一符号を付し、その説明を省略する。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. In this figure, the same members as in FIG. 3 are given the same reference numerals, and their explanations will be omitted.
第１図（ＡＩＫ示すように、眞空排気装置６は、仕切り
板７を介し、液晶セル４を配電する液晶セル配置部６ａ
と液晶槽３を配置する液晶槽配置部６ｂに分けてなり、
上記液晶セル配置部６ａには液晶セル４を加熱するヒー
タ８が配設されている。FIG. 1 (AIK) As shown in FIG.
and a liquid crystal tank arrangement part 6b in which the liquid crystal tank 3 is arranged,
A heater 8 for heating the liquid crystal cell 4 is arranged in the liquid crystal cell arrangement section 6a.
このような構成において、まず、眞をポンプ５を動作さ
せ、ヒータ８により液晶セル４を加熱させながら液晶セ
ル配置部６ａをｌ Ｘ ＩＱ−” ｍｌ ＨＪＩ程度の
眞空に排気し、次に切り換え弁９を切り換えて液晶槽配
置部６ｂを上記と同程度の眞空に排気する。In such a configuration, first, the pump 5 is operated to evacuate the liquid crystal cell arrangement section 6a to a vacuum of about 1 x IQ-" ml HJI while heating the liquid crystal cell 4 with the heater 8, and then the switching valve is activated. 9 to evacuate the liquid crystal tank arrangement section 6b to the same degree of emptiness as above.
以上による排気操作を行った後、第１図（Ｂ）に示すよ
うに、仕切り板７を手動または図示しない駆動装置によ
り矢視方向に移動させて開放し、両配置部６ａ、６ｂを
同一の眞空雰囲気の空間になし、次に前記従来の方法と
同様に、液晶セル４の開放口４ａを液晶２の甲に浸入さ
せる。そして、弁１（ｌ開き、上記眞空を破ることによ
り、液晶２を液晶セル４内に充填させる。After performing the above exhaust operation, as shown in FIG. 1(B), the partition plate 7 is opened by moving it manually or by a drive device (not shown) in the direction of the arrow, and both arrangement parts 6a and 6b are placed in the same position. Next, in a completely empty space, the opening 4a of the liquid crystal cell 4 is penetrated into the back of the liquid crystal 2 in the same manner as in the conventional method. Then, the liquid crystal 2 is filled into the liquid crystal cell 4 by opening the valve 1 and breaking the above-mentioned vacuum.
上記の実施例によると、液晶セル配置部６ａと液晶槽配
置部６ｂは天々別４ｒＩＡに眞空に排気されるので、夫
々の排気５＃間は従来の排気時間の４程度に短、縮させ
ることができる。特に、液晶セル配置部６ａは、ヒータ
８の加熱作用でより、液晶セル４の含有ガスの排出が確
立に行われるので、ヒータ８がない場合に比し、２０％
以上排気時間を短縮させることができる。また、液晶槽
３が眞空雰囲気にある時間が従来よりも短くなるので、
液晶２の成分の蒸発が少くなり、液晶２が良好な状態で
液晶セル４に充填させることかでさる。According to the above embodiment, since the liquid crystal cell arrangement section 6a and the liquid crystal tank arrangement section 6b are completely exhausted to 4rIA, the time between each exhaust 5# can be shortened to about 4 of the conventional evacuation time. be able to. In particular, in the liquid crystal cell arrangement part 6a, the gas contained in the liquid crystal cell 4 is more reliably discharged by the heating action of the heater 8, so that the gas contained in the liquid crystal cell 4 is discharged by 20% compared to the case without the heater 8.
As described above, the exhaust time can be shortened. Also, the time that the liquid crystal tank 3 is in the clear atmosphere is shorter than before, so
This reduces evaporation of the components of the liquid crystal 2 and allows the liquid crystal 2 to be filled into the liquid crystal cell 4 in good condition.
第２図は本発明の他の実施例を示し、液晶セル配置部６
ａと液晶槽配置部６ｂを別個の眞空ポンプ５Ａ、５Ｂを
用いて、同時に眞空に排気するようにしたもので、これ
により排気時間を大巾に短縮させることができる。FIG. 2 shows another embodiment of the present invention, in which a liquid crystal cell arrangement section 6
A and the liquid crystal tank arranging section 6b are simultaneously evacuated to the pure air using separate vacuum pumps 5A and 5B, thereby making it possible to greatly shorten the evacuation time.
以上述べた本発明により、液晶の充填時間の短縮により
、液晶の充填工程の生産性を向上させることができる。According to the present invention described above, the productivity of the liquid crystal filling process can be improved by shortening the liquid crystal filling time.
また、液晶セルの含有ガスが排除され、液晶成分の蒸発
も少くすることができるので、表示特性の劣下のない優
れた液晶表示素子を得ることが可能になる。Further, since the gas contained in the liquid crystal cell is eliminated and the evaporation of liquid crystal components can be reduced, it is possible to obtain an excellent liquid crystal display element with no deterioration in display characteristics.
第１図は本発明方法を行うための一実施例になる眞空排
気装置を示し、（ム）および（Ｂｌは夫々液晶セルに液
晶を充填する前および充填する際の動作説明断面図、第
２図は本発明方法を行うための他の実施例になる眞空排
気装置の断面図、第３図は従来の眞空排気装置の断面図
である。
２・・・液晶、 ３・・・液晶槽、 ４・・・
液晶セル、６・・・眞空排気装置、 ６ａ・・・液
晶セル配置部、６ｂ・・・液晶槽配＝部、 ７・・
・仕切り板、８・・・ヒータ。
−で娠
代理人 弁理士 小 川 勝 男 −一１第
図FIG. 1 shows a vacuum evacuation device which is an embodiment of the method of the present invention, and (M) and (Bl) are sectional views explaining the operation before and during filling the liquid crystal cell with liquid crystal, respectively. The figure is a sectional view of a pure air exhaust system according to another embodiment for carrying out the method of the present invention, and FIG. 3 is a sectional view of a conventional pure air exhaust system. 2...Liquid crystal, 3...Liquid crystal tank, 4...
Liquid crystal cell, 6... True air exhaust device, 6a... Liquid crystal cell arrangement section, 6b... Liquid crystal tank arrangement section, 7...
・Partition plate, 8...heater. -Patent attorney Katsuo Ogawa -11 Diagram
Claims (1)
液晶の中に液晶セルを浸入させ、上記眞空を破ることに
より、液晶セルに液晶を充填させる液晶の充填方法にお
いて、眞空排気装置を、液晶セルが配置される液晶セル
配置部と液晶槽が配置される液晶槽配置部に分けてなり
、液晶セルを加熱しながら上記液晶セル配置部を眞空に
排気すると共に、上記液晶槽配置部を液晶セル配置部と
並行し、もしくは後順位にして眞空に排気し、次に両配
量部間の仕切を板を開放し、液晶セルの開放口を液晶槽
の液晶に浸入させた後、上記眞空を破ることにより、液
晶セルに液晶を充填させることを特徴とする液晶の充填
方法。1. In a liquid crystal filling method, the liquid crystal cell is filled with liquid crystal by infiltrating a liquid crystal cell into the liquid crystal of a liquid crystal tank provided in a vacuum exhaust device that is maintained in a vacuum and breaking the vacuum. is divided into a liquid crystal cell arrangement part where a liquid crystal cell is arranged and a liquid crystal tank arrangement part where a liquid crystal tank is arranged, and while heating the liquid crystal cell, the liquid crystal cell arrangement part is completely evacuated and After placing the liquid crystal cell dispensing part in parallel with or after the liquid crystal cell arrangement part and exhausting it to the sky, open the partition plate between both dispensing parts, and let the liquid crystal in the liquid crystal tank penetrate through the opening of the liquid crystal cell. , a liquid crystal filling method characterized in that a liquid crystal cell is filled with liquid crystal by breaking the above-mentioned vacuum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2135192A JP2875345B2 (en) | 1990-05-28 | 1990-05-28 | Liquid crystal filling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2135192A JP2875345B2 (en) | 1990-05-28 | 1990-05-28 | Liquid crystal filling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0430124A true JPH0430124A (en) | 1992-02-03 |
| JP2875345B2 JP2875345B2 (en) | 1999-03-31 |
Family
ID=15145994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2135192A Expired - Lifetime JP2875345B2 (en) | 1990-05-28 | 1990-05-28 | Liquid crystal filling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2875345B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0442129A (en) * | 1990-06-08 | 1992-02-12 | Toshiba Corp | Manufacture of color liquid crystal display element |
| DE19737860B4 (en) * | 1996-08-30 | 2007-12-13 | Lg. Philips Lcd Co., Ltd. | Apparatus and method for injecting liquid crystal material into a liquid crystal panel |
-
1990
- 1990-05-28 JP JP2135192A patent/JP2875345B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0442129A (en) * | 1990-06-08 | 1992-02-12 | Toshiba Corp | Manufacture of color liquid crystal display element |
| DE19737860B4 (en) * | 1996-08-30 | 2007-12-13 | Lg. Philips Lcd Co., Ltd. | Apparatus and method for injecting liquid crystal material into a liquid crystal panel |
| DE19737860B9 (en) * | 1996-08-30 | 2008-05-15 | Lg. Philips Lcd Co., Ltd. | Apparatus and method for injecting liquid crystal material into a liquid crystal panel |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2875345B2 (en) | 1999-03-31 |
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