JPH08171094A - Liquid crystal injecting method and liquid crystal injecting device to liquid crystal display device - Google Patents

Liquid crystal injecting method and liquid crystal injecting device to liquid crystal display device

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Publication number
JPH08171094A
JPH08171094A JP31507094A JP31507094A JPH08171094A JP H08171094 A JPH08171094 A JP H08171094A JP 31507094 A JP31507094 A JP 31507094A JP 31507094 A JP31507094 A JP 31507094A JP H08171094 A JPH08171094 A JP H08171094A
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Patent type
Prior art keywords
liquid crystal
cup
liquid crystals
liquid
crystal cup
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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.)
Withdrawn
Application number
JP31507094A
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Japanese (ja)
Inventor
Shinji Houchiyou
Hirohito Matsui
Masahiro Shiozawa
方浩 塩澤
伸次 庖丁
啓仁 松井
Original Assignee
Nippon Soken Inc
株式会社日本自動車部品総合研究所
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Abstract

PURPOSE: To make it possible to efficiently inject a specified amt. of liquid crystals by heating the liquid crystals filled in a liquid crystal cup having a hole in its bottom to cause phase transition and to lower their viscosity and dropping the liquid crystals from the hole, thereby injecting the liquid crystals into a liquid crystal display device.
CONSTITUTION: A dispenser 7 consists of a cartridge heater 1 and the liquid crystal cup 2 fixed by welding, etc., to the outer side. The cartridge heater 1 contains a heater wire 3 and a thermocouple 4 so that the liquid crystal cup is heated up to a specified temp. by a temp. control means. The liquid crystal cup is formed to an inverted conical shape and is bored with the hole at its front end. The proper amt. of the gelatinous liquid crystals are previously billed into the liquid crystal cup. The phase transition of the liquid crystals occurs and their viscosity fall drastically when the liquid crystals in the liquid crystal cup are heated up to the transition temp. via the liquid crystal cup by energizing the heater. The liquid crystal cup is coated with 'Teflon (R)' over the entire surface, since the coating well repels the isotropic phase liquid crystals, the liquid crystals drop as dripping of the specified size from the front end of the liquid crystal cup 2. The injection of the specified amt. of the liquid crystals is thus possible.
COPYRIGHT: (C)1996,JPO

Description

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

【0001】 [0001]

【産業上の利用分野】本発明は、特に、強誘電性(反強誘電性を含む)の液晶を用いた液晶表示装置の製造工程における、液晶表示装置への液晶の注入方法及びその方法の実施に適した装置に関する。 The present invention relates, in particular, ferroelectric in the manufacturing process of the liquid crystal display device using a liquid crystal (antiferroelectric including a dielectric), the liquid crystal injection method and method of the liquid crystal display device an apparatus suitable for carrying.

【0002】 [0002]

【従来の技術】液晶表示器に液晶を注入するとき、空セルに液晶を注入する方法には2つの方法がある。 When injecting the liquid crystal of the Prior Art Liquid crystal display, the method of injecting liquid crystal into the empty cell in two ways. その1 Part 1
は、平坦な液晶皿に液晶を溜めておき、液晶溜まりに空セルを浸すことにより液晶を供給する方法(壺皿方式) Method Accumulate liquid crystal flat liquid crystal dish, and supplies the liquid by immersing the empty cell in the liquid crystal reservoir (Tsubosara method)
である。 It is. その2は、水平に配置された空セルに、必要量の液晶を計量しながら滴下する方法(ディスペンサ方式)である。 Part 2, the air cells disposed horizontally, a method of dropping metered liquid crystal of the required amount (dispenser method). 一般に、強誘電性及び反強誘電性の液晶は非常に高価であり、壺皿方式では、液晶皿に大量の液晶を溜めておく必要があるため、無駄となる液晶が多く不経済である。 In general, ferroelectric and antiferroelectric liquid crystals are very expensive, in Tsubosara method, since it is necessary to pool a large amount of liquid in the liquid crystal dish, a many crystal wasted uneconomical.

【0003】これに対してディスペンサ方式は、壺皿方式の前記問題を解決するために発明されたもので、空セルに必要な量の液晶だけを滴下して供給する方法である。 [0003] dispenser method contrary has been invented to solve the problems of Tsubosara method is a method for supplying dropwise by liquid amount required for the empty cell. この方法には、例えば特開平5−323334号公報、特開平5−265011号公報に記載の、液晶をノズルで送りだす方法がある。 The method, for example, JP-A 5-323334 and JP-described in JP-A-5-265011, a method for feeding the liquid at the nozzle. しかしながら、これらの方法はノズルやシリンダを充填するのに大量の液晶が必要であったり、空気圧で所定量の液晶を吐出させる方法であるので吐出量がラフな制御となり必要量より多めに吐出することがあり、無駄になる液晶が少なくない。 However, these methods because it involves a large amount of liquid to fill the nozzle and the cylinder, the discharge amount since it is a method of ejecting a predetermined amount of liquid crystal in air pressure larger amount to discharge than the required amount becomes rough control it is there, the liquid crystal is wasted is not a few.

【0004】また、ディスペンサ方式の1つとして、特開平5−158007号公報には、マイクロゲージとモーター等の駆動手段とを用いて一定量の液晶を計量しつつノズルから液晶表示装置に注入する方法が開示されている。 Further, as one of the dispenser method, JP-A-5-158007, is injected while metering a quantity of liquid crystal by using a driving means such as a micro gauge and motor from the nozzle to the liquid crystal display device method is disclosed. この方法では無駄になる液晶は少ないが滴下量の制御手段が高価であり、またモータの回転力という動力を真空装置内に導入しなければならず、装置が大掛かりとなるという欠点がある。 LCD seldom wasted in this way is dropped amount of the control means is expensive and must be introduced power of rotational force of the motor to the vacuum apparatus, there is a disadvantage that the apparatus becomes large-scaled.

【0005】 [0005]

【発明が解決しようとする課題】本発明の目的は、液晶の無駄がなく、一定量の液晶を液晶表示器へ滴下注入できる安価なディスペンサ方式の液晶注入方法及びその方法の実施に適した装置を提供することである。 The object of the present invention is to solve the above, there is no liquid crystal waste, suitable for carrying out the liquid crystal injection method and a method of inexpensive dispenser method capable instillation a certain amount of liquid crystal to the liquid crystal display device it is to provide a.

【0006】 [0006]

【課題を解決するための手段】本発明の第1の態様は、 Means for Solving the Problems] A first aspect of the present invention,
底部に孔を有する液晶カップに液晶を充填し、この液晶を加熱して相転移させることにより粘度を下げ、前記孔より一定量の液晶を滴下させて液晶表示器へ一定量の液晶を注入する方法である。 Filling the liquid in the liquid crystal cup having a hole in the bottom, lowering the viscosity by phase transition by heating the liquid crystal is injected a certain amount of liquid crystal wherein by dropping a predetermined amount of liquid crystal than the pore to the liquid crystal display it is a method.

【0007】本発明の第2の態様は、底部に孔を有する液晶カップと、この液晶カップに入れられた液晶を加熱できる手段とを有する液晶注入装置である。 A second aspect of the present invention is a liquid crystal injection device having a liquid crystal cup having a hole in the bottom, and means capable of heating the liquid crystal which is placed on the liquid crystal cup.

【0008】前記液晶カップはテフロン等の液晶をはじく性質のコーティングを施しておくのが好ましい。 [0008] The liquid crystal cup is preferably previously subjected to a coating property of repelling the liquid crystal such as Teflon.

【0009】 [0009]

【作用】前記液晶カップの中にゲル状の液晶を適量充填しておき、この液晶をその相転移温度以上に加熱して相転移を起こさせると、この液晶は粘度が大きく低下する。 [Action] leave an appropriate amount filling a gel-like liquid crystal in said liquid crystal cup and cause heating to phase transition the liquid crystal above its phase transition temperature, the liquid crystal viscosity is greatly reduced. これによって液晶は流れやすくなり前記液晶カップの孔から一定の大きさの雫となって滴下する。 This liquid crystal dripping made from said tends to flow of the liquid crystal cup hole and fixed size of the drops. これによって一定量の液晶を液晶表示器へ滴下し注入できる。 This enables dropwise injecting a predetermined amount of liquid crystal to the liquid crystal display device.

【0010】 [0010]

【実施例】図1において、液晶供給する装置の真空容器内など(図示せず)において、空セル5の上方に液晶を滴下するディスペンサ7を、図示しないステイにより配置し保持する。 EXAMPLES In FIG. 1, such as within the vacuum vessel of the liquid crystal supplying device (not shown), a dispenser 7 for dropping the liquid crystal above the empty cell 5, positioning and retention by stay not shown. ディスペンサの数は1本に限る必要はなく、液晶セル5の大きさに応じて適宜増減すればよい。 The number of dispenser is not necessarily limited to one, it may be appropriately increased or decreased depending on the size of the liquid crystal cell 5.
ディスペンサは、カートリッジヒータ1とその外側に溶接などにより固定された液晶カップ2からなる。 Dispenser, a liquid crystal cup 2 fixed by welding cartridge heaters 1 and on the outside thereof. カートリッジヒータは、ヒータ線3と熱電対4を内蔵し、図示しない温調手段により一定温度に液晶カップを昇温できるようになっている。 Cartridge heater incorporates a heater wire 3 and the thermocouple 4, is a liquid crystal cup at a constant temperature by temperature control means (not shown) to allow warm. 液晶カップは逆円錐状であり、その先端には孔があいており、必要に応じて前記円錐の母線に沿ったスリットが入っている。 Crystal cup is reverse conical, its the tip is empty a hole, filled with a slit along a generatrix of said conical as required. また、カップの内外面にはテフロンコーティングを施してある。 In addition, the inner and outer surfaces of the cup are subjected to Teflon coating.

【0011】図2及び3について、液晶を滴下する様子について以下に説明する。 [0011] For FIGS. 2 and 3, will be described below how the liquid crystal is dropped. あらかじめ液晶カップの中にゲル状の液晶10を適量充填しておく。 Keep an appropriate amount filling a gel-like liquid crystal 10 in advance in the liquid crystal cup. ヒータを通電して液晶カップを介して、その中の液晶をその転移温度(約100℃)まで昇温させると、液晶が相転移し粘度が大きく低下する。 Through the liquid crystal cups by energizing the heater, when the heated liquid crystal therein to its transition temperature (about 100 ° C.), liquid crystal phase transition viscosity decreases significantly. 液晶カップ2は全面テフロンコーティング11で被覆されており、アイソトロピック相の液晶をよくはじくため、液晶カップ先端から液晶が雫となって滴下する。 The liquid crystal cup 2 is covered over the entire surface coated with Teflon 11, repels good liquid crystal isotropic phase, liquid crystal from the liquid crystal cup tip is added dropwise a drops. このとき、液晶の表面張力と液晶自身に働く重力とのかねあいで雫の大きさが決まる。 At this time, the size of the drops is determined in view of the gravity acting on the liquid crystal of the surface tension and the liquid crystal itself. 即ち、この液晶の雫の一滴の大きさは、液晶カップの孔径、カップの開き角度、カップにおけるスリットの有無などにより任意に決めることができる。 In other words, drop size of the drops of the liquid crystal can be determined pore size of the liquid crystal cup, the opening angle of the cup, optionally by the presence or absence of the slit in the cup. 滴下したい量に合わせて液晶カップの大きさや形状を選べば、特別な制御なしに毎回一定量の液晶を滴下できる。 If you choose the size and shape of the liquid crystal cup in accordance with the dropwise want amount can dripped liquid each time a certain amount without special control. 本発明者等の実験によれば、図3に示すように、逆円錐状のカップの底部の孔径2mm、カップ開き角度60°、スリット幅1.5mm、 According to experiments of the present inventors, as shown in FIG. 3, the hole diameter 2mm in the bottom of the inverted cone-shaped cup, the cup opening angle 60 °, the slit width 1.5 mm,
カップ深さ5.7mmの液晶カップに液晶を充填した場合、0.023g/滴の雫が3滴(合計0.07g)滴下した。 When filled with liquid to the liquid crystal cup cup depth 5.7 mm, drops of 0.023 g / drops 3 drops (total 0.07 g) was added dropwise. 液晶カップに微量の残った液晶は、次回の滴下時に利用される。 The liquid crystal remaining a small amount of liquid crystal cup is used at the time of the next dropping.

【0012】一方、はじめに液晶カップに充填する液晶の充填量は、セル1枚に必要な量+αである。 [0012] On the other hand, the filling amount of liquid crystal to be filled in the liquid crystal cup at the beginning is the amount + α necessary in one cell. 本発明では、この充填方法のいかんを問わない。 In the present invention, any strength of the filling process. 例えば小規模の生産装置の場合、人の手によって複数のそれぞれのディスペンサに充填してもよいし、大規模の生産装置の場合は、ディスペンサを別に用意した液晶溜まりへ順次移動させ直接液晶を汲み取ってもよい。 For example small production equipment, it may be filled in a plurality of respective dispensers by the hand of man, in the case of large-scale production equipment, Kumito' direct liquid crystals sequentially moved to reservoir liquid was separately prepared a dispenser it may be. いずれにしても、充填量の精度は必要な滴下量の精度に較べて、+αの分だけラフでよいため簡単に実現できる。 Anyway, the filling amount of precision compared to the required dropping amount of precision, can be realized easily for good rough by the amount of + alpha.

【0013】本発明の液晶カップの形状は上に示したものに限らず、例えば図4に示すように、先端の孔がぎざぎざになっているもの、図5に示すように先端の内面がしわになっているもの等であってもよい。 [0013] The shape of the liquid crystal cup of the present invention is not limited to those shown above, for example, as shown in FIG. 4, which holes the tip is jagged, wrinkles inner surface of the tip as shown in FIG. 5 it may be such as those that have become. また、加熱手段は上述のものに限らず、例えば図6に示すように液晶カップの壁の中にヒータ線12が埋め込まれたものであってもよい。 The heating means is not limited to those described above, for example, may be one heater wire 12 is embedded in the walls of the liquid crystal cup as shown in FIG. また、赤外線で液晶又は液晶カップを加熱するようにしたものであってもよい。 Further, it may be one in which so as to heat the liquid crystal or liquid crystal cup infrared.

【0014】 [0014]

【発明の効果】本発明によれば、液晶の無駄がなく、一定量の液晶を液晶表示器へ滴下注入できる安価なディスペンサ方式の液晶注入方法及びその方法の実施に適した装置を提供できる。 According to the present invention, there is no liquid crystal waste, it can provide an apparatus suitable for carrying out the liquid crystal injection method and a method of inexpensive dispenser method capable instillation a certain amount of liquid crystal to the liquid crystal display device.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明装置を用いて本発明方法を実施する様子を示す透視図。 Perspective view showing a state of carrying out the method of the present invention with reference to the present invention; FIG device.

【図2】本発明方法における液晶の滴下の様子を示す側面図。 Side view showing a state of the liquid crystal dropping in the present invention; FIG method.

【図3】本発明の液晶カップ及び加熱装置の一例を示す透視図。 Perspective view showing an example of a liquid crystal cup and heating apparatus of the present invention; FIG.

【図4】本発明における液晶カップの他の例の側面図。 Side view of another example of the liquid crystal cup in the present invention; FIG.

【図5】本発明における液晶カップの他の例の側面図。 Side view of another example of the liquid crystal cup in the present invention; FIG.

【図6】本発明の液晶カップ及び加熱装置の他の例を示す断面図。 6 is a sectional view showing another example of the liquid crystal cup and heating apparatus of the present invention.

【符号の説明】 DESCRIPTION OF SYMBOLS

1…カートリッジヒータ 2…液晶カップ 3…ヒータ線 4…温調用熱電対 5…液晶セル 6…液晶注入口 7…ディスペンサ 10…液晶 11…テフロンコーティング 12…埋設ヒータ線 1 ... Cartridge heaters 2 ... liquid crystal cups 3 ... heating wire 4 ... thermocouple for temperature control 5 ... liquid crystal cell 6 ... liquid crystal inlet 7 ... dispenser 10 ... LCD 11 ... Teflon coating 12 ... embedded heater wire

Claims (2)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 底部に孔を有する液晶カップに液晶を充填し、この液晶を加熱して相転移させることにより粘度を下げ、前記孔より一定量の液晶を滴下させて液晶表示器へ一定量の液晶を注入する方法。 1. A filled with liquid to a liquid crystal cup having a hole in the bottom, lowering the viscosity by heating the phase transition the liquid crystal, a certain amount the by dropping a predetermined amount of liquid crystal than the pore to the liquid crystal display a method of injecting the liquid crystal.
  2. 【請求項2】 底部に孔を有する液晶カップと、この液晶カップに入れられた液晶を加熱できる手段を有する液晶注入装置。 2. A liquid crystal injection device comprising a liquid crystal cup having a hole in the bottom, a means for heating the liquid crystal which is placed on the liquid crystal cup.
JP31507094A 1994-12-19 1994-12-19 Liquid crystal injecting method and liquid crystal injecting device to liquid crystal display device Withdrawn JPH08171094A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31507094A JPH08171094A (en) 1994-12-19 1994-12-19 Liquid crystal injecting method and liquid crystal injecting device to liquid crystal display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31507094A JPH08171094A (en) 1994-12-19 1994-12-19 Liquid crystal injecting method and liquid crystal injecting device to liquid crystal display device

Publications (1)

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JPH08171094A true true JPH08171094A (en) 1996-07-02

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