JPH05265011A - Production of liquid crystal display element - Google Patents

Production of liquid crystal display element

Info

Publication number
JPH05265011A
JPH05265011A JP6392892A JP6392892A JPH05265011A JP H05265011 A JPH05265011 A JP H05265011A JP 6392892 A JP6392892 A JP 6392892A JP 6392892 A JP6392892 A JP 6392892A JP H05265011 A JPH05265011 A JP H05265011A
Authority
JP
Japan
Prior art keywords
liquid crystal
glass substrate
crystal display
area
display element
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
JP6392892A
Other languages
Japanese (ja)
Inventor
Katsuki Matsushita
克樹 松下
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP6392892A priority Critical patent/JPH05265011A/en
Publication of JPH05265011A publication Critical patent/JPH05265011A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To attain the high yield formation of a liquid crystal display element capable of suppressing variation in a gap value even when the quantity of liquid crystal is changed by forming frame-like sealing materials in accordance with the quantity of liquid crystal supplied to a glass base. CONSTITUTION:The weight of liquid crystal 5 supplied to the glass base 1 is measured and the sealing area of the liquid crystal 5 is calculated based upon the specific gravity of the liquid crystal 5 and an objective gap value. On the other hand, the frame-like sealing materials 2 are formed so that the area of an inside area between the sealing materials 2 is the same as that of the sealing area of the liquid crystal 5 when both the glass bases 1 are stuck to each other and the objective gap value is obtained.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は電極パターンおよび配向
膜の施された一対の液晶用ガラス基板を貼り合わせて構
成される液晶表示素子の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a liquid crystal display device, which is constructed by laminating a pair of glass substrates for liquid crystal having an electrode pattern and an alignment film.

【０００２】[0002]

【従来の技術】従来の液晶表示素子の製造方法として、
電極パターンおよび配向膜の施された一対のガラス基板
を枠状のシール材を介して重合接着して、液晶表示素子
を組み立てた後に、前記シール材の一部を欠除して形成
された液晶注入口から液晶を真空注入法で注入した後、
前記液晶注入口を封口する方法が知られている。2. Description of the Related Art As a conventional method for manufacturing a liquid crystal display element,
A liquid crystal formed by polymerizing and adhering a pair of glass substrates provided with an electrode pattern and an alignment film via a frame-shaped sealing material to assemble a liquid crystal display element, and then removing a part of the sealing material. After injecting the liquid crystal from the inlet with the vacuum injection method,
A method of sealing the liquid crystal inlet is known.

【０００３】また、最近では液晶表示素子を組み立てる
前に、この液晶表示素子を形成する一対のガラス基板の
内の一方のガラス基板上に液晶を供給し、その後に前記
一対のガラス基板を重合接着して液晶表示素子を組み立
てる製造方法が採用されるようになってきている。図３
は、ガラス基板上に液晶を供給した後に、対向ガラス基
板を重ね合わせ接着する液晶素子の製造方法を示す従来
例である。図中１は液晶表示素子用のガラス基板であ
り、このガラス基板１面には、ＩＴＯ等からなる表示用
の電極パターンおよび配向膜（いずれも図示せず）が形
成されるとともに、熱硬化性もしくは光硬化性の接着剤
からなる枠状のシール材２が形成されている。このガラ
ス基板１は枠状のシール材２で囲まれた液晶封入領域に
液晶を供給された後、この基板１と対をなすもう一方の
ガラス基板（図示せず）と前記シール材２を介して重合
接着される。一方、図３において、３は前記ガラス基板
１の液晶封入領域に液晶を供給するためのエア押し出し
型ディスペンサである。このディスペンサ３は、液晶５
を収容する筒状のバレル部３ａとこのバレル部３ａの下
端に垂直に設けられたノズル部３ｂとからなっており、
前記バレル部３ａの上端にはエアホース４が接続されて
いる。Further, recently, before assembling a liquid crystal display element, liquid crystal is supplied onto one of the pair of glass substrates forming the liquid crystal display element, and then the pair of glass substrates are polymerized and bonded. Then, a manufacturing method of assembling the liquid crystal display element has been adopted. Figure 3
Is a conventional example showing a method for manufacturing a liquid crystal element in which liquid crystal is supplied onto a glass substrate and then counter glass substrates are superposed and bonded. In the figure, reference numeral 1 denotes a glass substrate for a liquid crystal display element. On the surface of the glass substrate 1, a display electrode pattern made of ITO or the like and an alignment film (neither of which is shown) are formed, and thermosetting Alternatively, the frame-shaped sealing material 2 made of a photocurable adhesive is formed. This glass substrate 1 is supplied with liquid crystal in a liquid crystal enclosing region surrounded by a frame-shaped sealing material 2, and then the other glass substrate (not shown) paired with this substrate 1 and the sealing material 2 are interposed. Are polymerized and bonded. On the other hand, in FIG. 3, reference numeral 3 is an air push-out type dispenser for supplying liquid crystal to the liquid crystal enclosing region of the glass substrate 1. This dispenser 3 has a liquid crystal 5
And a nozzle portion 3b vertically provided at the lower end of the barrel portion 3a.
An air hose 4 is connected to the upper end of the barrel portion 3a.

【０００４】そして、ガラス基板１の液晶封入領域への
液晶５の供給は、ガラス基板１をディスペンサ３の下に
搬入して、その液晶封入領域のほぼ中央をディスペンサ
３のノズル部３ｂに対向させ、この状態でエアホース４
からディスペンサ３のバレル部３ａにエアを供給して、
このエア圧でバレル部３ａの液晶５をノズル部３ｂから
ガラス基板１上に滴下する方法で行われている。The liquid crystal 5 is supplied to the liquid crystal filling area of the glass substrate 1 by bringing the glass substrate 1 under the dispenser 3 and making the center of the liquid crystal filling area face the nozzle portion 3b of the dispenser 3. , Air hose 4 in this state
From the air to the barrel portion 3a of the dispenser 3,
This air pressure is used to drop the liquid crystal 5 in the barrel portion 3a onto the glass substrate 1 from the nozzle portion 3b.

【０００５】[0005]

【発明が解決しようとする課題】しかし、上記従来の製
造方法における液晶の供給方法は、ディスペンサ３内の
液晶５をエア圧で押し出してガラス基板１上に滴下する
ものであるため、一定量の液晶５をガラス基板１に供給
するには、エア圧及びエア供給時間を厳密に制御する必
要があり、したがって液晶供給量の制御が面倒である
し、また、ディスペンサ３内の液晶残量はガラス基板１
への液晶５の供給の繰り返しに伴って減少するために、
エア圧、エア供給量を一定に制御しても、ディスペンサ
３内の液晶残量の変化によって、ガラス基板１への液晶
５の供給量が変動してしまっていた。However, in the liquid crystal supplying method in the above-described conventional manufacturing method, since the liquid crystal 5 in the dispenser 3 is pushed out by air pressure and dropped on the glass substrate 1, a certain amount of liquid crystal is supplied. In order to supply the liquid crystal 5 to the glass substrate 1, it is necessary to strictly control the air pressure and the air supply time. Therefore, the control of the liquid crystal supply amount is troublesome, and the liquid crystal remaining amount in the dispenser 3 is glass. Board 1
To decrease with repeated supply of liquid crystal 5 to
Even if the air pressure and the air supply amount were controlled to be constant, the supply amount of the liquid crystal 5 to the glass substrate 1 was fluctuated due to the change in the liquid crystal remaining amount in the dispenser 3.

【０００６】そのため、液晶５が供給され、一対の液晶
用ガラス基板が組み立てられた後のガラス基板内の液晶
層の厚み（以下、ギャップという）の精度が液晶５の供
給量の精度に依存する特徴を持つ前記従来の製造方法に
おいては、液晶５の供給量の変動は、そのままギャップ
値の変動となるという課題を有していた。そこで、本発
明は従来のこのような課題を解決するためになされたも
のであり、ガラス基板への液晶の供給量が変動しても組
み立てられた液晶表示素子のギャップの変動が少ないと
いう特徴を持った液晶表示素子の製造方法を提供するこ
とを目的とするものである。Therefore, the accuracy of the thickness (hereinafter referred to as a gap) of the liquid crystal layer in the glass substrate after the liquid crystal 5 is supplied and the pair of glass substrates for liquid crystal is assembled depends on the accuracy of the supply amount of the liquid crystal 5. In the above-mentioned conventional manufacturing method having a characteristic, there is a problem that the fluctuation of the supply amount of the liquid crystal 5 directly changes the gap value. Therefore, the present invention has been made in order to solve such a conventional problem, and is characterized in that the fluctuation of the gap of the assembled liquid crystal display element is small even if the supply amount of the liquid crystal to the glass substrate changes. It is an object of the present invention to provide a method for manufacturing the liquid crystal display device having the above.

【０００７】[0007]

【課題を解決するための手段】上記課題を解決するため
に、本発明の液晶表示素子の製造方法においては、ガラ
ス基板上に供給された液晶の量を正確に秤量し、目的と
するギャップ値で除して液晶の封入領域の面積を計算
し、一方、枠シール材は、一対のガラス基板が貼り合わ
され目的のギャップ値になったときその内側の領域の面
積が前記液晶の封入領域の面積と同一になるように形成
されることを特徴とするものである。In order to solve the above problems, in the method for manufacturing a liquid crystal display device of the present invention, the amount of liquid crystal supplied on a glass substrate is accurately weighed to obtain a desired gap value. Calculate the area of the liquid crystal enclosed area by dividing by, while the frame sealing material, when the pair of glass substrates are pasted together and the target gap value is reached, the area of the inner area is the area of the liquid crystal enclosed area. It is characterized in that it is formed to be the same.

【０００８】[0008]

【作用】本発明の液晶表示装置の製造方法は、ガラス基
板上に供給された液晶の量から目的のギャップ値にする
ための液晶の封入領域を求め、それに合わせて枠状のシ
ール材を形成するようにしたものであり、液晶の供給量
に変動が生じても、ギャップに変動を生じない液晶表示
素子を得ることができる。According to the method of manufacturing the liquid crystal display device of the present invention, the enclosed area of the liquid crystal for obtaining the target gap value is obtained from the amount of the liquid crystal supplied on the glass substrate, and the frame-shaped sealing material is formed in accordance with the obtained area. Therefore, it is possible to obtain a liquid crystal display element in which the gap does not fluctuate even when the liquid crystal supply amount fluctuates.

【０００９】[0009]

【実施例】以下、本発明の実施例を図面に基づいて説明
する。図１において、図中１は液晶表示素子用のガラス
基板である。このガラス基板１面には、ＩＴＯ等からな
る表示用の電極パターンおよび配向膜（いずれも図示せ
ず）が形成されている。ガラス基板１は重量を測定する
ことのできるステージ６上におかれている。このステー
ジ６は図示しない温度調整機構を備え、ステージ上のガ
ラス基板１の温度をほぼ一定に保っている。３は、前記
ガラス基板１上に液晶を供給するためのエア押し出し型
ディスペンサである。このディスペンサ３内の液晶５も
図示しない温度調整機構によって前記ステージ６と同じ
温度に保たれている。また、７は枠状にシール材２を塗
布するためのディスペンサである。これらのディスペン
サ３、７はそれぞれＸ−Ｙ−Ｚロボット（図示せず）に
取り付けられており、ディスペンサコントローラ８から
の信号およびエア圧によってＸ、Ｙ、Ｚそれぞれの方向
への移動量およびシール材、液晶の吐出量が制御され
る。９は信号処理用コンピュータであって前記ステージ
６からの信号を処理し、前記コントローラ８に命令を与
える。Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 in the figure denotes a glass substrate for a liquid crystal display element. An electrode pattern for display and an alignment film (not shown) made of ITO or the like are formed on the surface of the glass substrate 1. The glass substrate 1 is placed on a stage 6 capable of measuring the weight. The stage 6 has a temperature adjusting mechanism (not shown) to keep the temperature of the glass substrate 1 on the stage substantially constant. Reference numeral 3 is an air extrusion type dispenser for supplying liquid crystal onto the glass substrate 1. The liquid crystal 5 in the dispenser 3 is also kept at the same temperature as the stage 6 by a temperature adjusting mechanism (not shown). Further, 7 is a dispenser for applying the sealing material 2 in a frame shape. These dispensers 3 and 7 are attached to an XYZ robot (not shown), and the amount of movement in each of the X, Y and Z directions and the sealing material are controlled by a signal from the dispenser controller 8 and air pressure. , The discharge amount of liquid crystal is controlled. A signal processing computer 9 processes a signal from the stage 6 and gives a command to the controller 8.

【００１０】次にその工程について図１および図２
（ａ）、（ｂ）、（ｃ）を用いて説明する。まず、ガラ
ス基板１がステージ６上に搬入され、重量が測定され
る。次に、前記ディスペンサ３により、前記ガラス基板
１上に液晶５が１回もしくは数回にわたり所定量滴下供
給される（図２（ａ））。この際の滴下量は所定量に対
して厳密に制御されている必要はない。この状態で再度
重量を測定すると、液晶を滴下供給する以前に測定した
ガラス基板１との重量差が、滴下供給された液晶の重量
となる。Next, the process will be described with reference to FIGS. 1 and 2.
A description will be given using (a), (b), and (c). First, the glass substrate 1 is loaded on the stage 6 and its weight is measured. Next, the dispenser 3 drops and supplies a predetermined amount of the liquid crystal 5 onto the glass substrate 1 once or several times (FIG. 2A). The dropping amount at this time does not need to be strictly controlled with respect to the predetermined amount. When the weight is measured again in this state, the weight difference with the glass substrate 1 measured before the liquid crystal is dropped and supplied becomes the weight of the dropped liquid crystal.

【００１１】上述したように、前記ガラス基板１とディ
スペンサ内の液晶５の温度は等しくなるように保たれて
いるので、滴下供給された液晶の重量を、あらかじめわ
かっているこの時の温度における液晶の比重で除してや
れは、滴下供給された液晶の体積が求められる。求めら
れた液晶の体積を、後にガラス基板が貼り合わされ組み
立てられた際に、必要な目的のギャップ値で除してやれ
ば、組み立てられた際の液晶の広がる面積が求められ
る。本発明の液晶表示素子の製造方法においては、これ
ら一連の処理は前記信号処理用コンピュータ９上で行わ
れる。As described above, since the temperatures of the glass substrate 1 and the liquid crystal 5 in the dispenser are kept equal to each other, the weight of the liquid crystal dropped and supplied is known in advance at this temperature. The volume of the liquid crystal that is dripped and supplied is obtained by dividing by the specific gravity of. If the calculated volume of the liquid crystal is divided by the required gap value when the glass substrate is bonded and assembled later, the spread area of the liquid crystal when assembled can be obtained. In the method of manufacturing a liquid crystal display device of the present invention, the series of processes is performed on the signal processing computer 9.

【００１２】次に、ディスペンサ７によって光硬化性の
シール材２を枠状に液晶を囲むように塗布するわけであ
るが、その際、前記シール材が目的のギャップ値までつ
ぶされたとき、前記枠状シール材の内側に囲まれた領域
の面積が、上述の液晶の広がる面積と等しくなるように
する。例えば、液晶のガラス基板１上への滴下供給量が
所定量より５％多かったと計算されれば、枠状シール材
が目的のギャップ値までつぶされた際の枠状シール材の
内側の面積を、所定量が滴下供給された際に形成される
枠状シール材の内側の面積に対して５％大きくなるよう
に信号処理用コンピュータ９で計算し、その結果にもと
づいてディスペンサのコントローラ８に命令してディス
ペンサ７で枠状にシール材２を塗布してやればよい（図
２（ｂ））。そして、このようにして液晶が滴下供給さ
れ、枠状にシール材が形成されたガラス基板１とスペー
サを散布した対向側のガラス基板１０を真空槽内で対向
して貼り合わせる（図２（ｃ））。その後、枠状のシー
ル材以外の領域をマスクして紫外線を照射して、シール
材２を硬化させて液晶表示素子を得る。Next, the photocurable sealing material 2 is applied by a dispenser 7 so as to surround the liquid crystal in a frame shape. At that time, when the sealing material is crushed to a target gap value, The area of the region surrounded by the inside of the frame-shaped sealing material is set to be equal to the area where the liquid crystal spreads. For example, if it is calculated that the amount of liquid crystal dropped and supplied onto the glass substrate 1 is 5% higher than a predetermined amount, the area inside the frame-shaped sealing material when the frame-shaped sealing material is crushed to a target gap value is calculated. , The signal processing computer 9 calculates so as to be 5% larger than the inner area of the frame-shaped seal material formed when a predetermined amount is dropped and supplied, and the controller 8 of the dispenser is instructed based on the result. Then, the sealing material 2 may be applied in a frame shape with the dispenser 7 (FIG. 2B). Then, the liquid crystal is dripped and supplied in this way, and the glass substrate 1 on which the sealing material is formed in a frame shape and the glass substrate 10 on the opposite side on which the spacers are scattered are opposed to each other in the vacuum chamber and bonded (see FIG. )). Then, the region other than the frame-shaped sealing material is masked and irradiated with ultraviolet rays to cure the sealing material 2 to obtain a liquid crystal display element.

【００１３】[0013]

【発明の効果】この発明は、以上説明したようにガラス
基板に供給された液晶の量に合わせ、枠状のシール材を
形成するため、液晶の量に変動が生じてもギャップ値に
変動の少ない液晶表示素子を得ることができる。従って
ギャップ値の一定な液晶表示素子を歩留りよく作ること
ができる。As described above, according to the present invention, since the frame-shaped sealing material is formed in accordance with the amount of liquid crystal supplied to the glass substrate, the gap value does not change even if the amount of liquid crystal changes. A small number of liquid crystal display elements can be obtained. Therefore, a liquid crystal display element having a constant gap value can be manufactured with high yield.

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

【図１】本発明の液晶表示素子の製造方法の一実施例を
示した説明図である。FIG. 1 is an explanatory view showing an example of a method for manufacturing a liquid crystal display element of the present invention.

【図２】本発明の液晶表示素子の製造方法の工程を示し
た斜視図である。FIG. 2 is a perspective view showing steps of a method for manufacturing a liquid crystal display element of the present invention.

【図３】液晶表示素子の製造方法の従来の技術を示した
説明図である。FIG. 3 is an explanatory diagram showing a conventional technique of a method for manufacturing a liquid crystal display element.

【符号の説明】[Explanation of symbols]

１ ガラス基板 ２ シール材 ３ ディスペンサ ４ エアホース ５ 液晶 ６ ステージ ７ ディスペンサ ８ ディスペンサコントローラ ９ 信号処理用コンピュータ １０ 対向側ガラス基板 1 Glass Substrate 2 Sealing Material 3 Dispenser 4 Air Hose 5 Liquid Crystal 6 Stage 7 Dispenser 8 Dispenser Controller 9 Signal Processing Computer 10 Opposite Side Glass Substrate

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 ２枚のガラス基板間に液晶を封入されて
なる液晶表示素子の製造方法において、対向するガラス
基板の少なくとも片方に液晶を滴下した後、前記滴下さ
れた液晶を秤量し、少なくとも片方の前記ガラス基板に
上記秤量した液晶量に応じた面積を画くように枠状にシ
ール材を形成し、その後２枚の上記ガラス基板を貼り合
わせることを特徴とする液晶表示素子の製造方法。1. A method for manufacturing a liquid crystal display device comprising a liquid crystal sealed between two glass substrates, wherein the liquid crystal is dropped onto at least one of the opposing glass substrates, and then the dropped liquid crystal is weighed, A method of manufacturing a liquid crystal display device, comprising: forming a sealing material in a frame shape on one of the glass substrates so as to define an area corresponding to the measured amount of liquid crystal, and then bonding the two glass substrates together. 【請求項２】 液晶を秤量する手段として、ガラス基板
の重量を測定した後、液晶を滴下した前記ガラス基板の
重量を測定し、前記２つの重量差を前記液晶の比重と目
的の液晶層の厚さで除して得られる前記液晶層の面積に
応じてシール材を塗布することを特徴とする特許請求第
１項記載の液晶表示素子の製造方法。2. As a means for weighing the liquid crystal, the weight of the glass substrate is measured, and then the weight of the glass substrate on which the liquid crystal is dropped is measured, and the difference between the two weights is calculated as follows: The method for manufacturing a liquid crystal display device according to claim 1, wherein a sealing material is applied according to an area of the liquid crystal layer obtained by dividing the thickness by the thickness.
JP6392892A 1992-03-19 1992-03-19 Production of liquid crystal display element Pending JPH05265011A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6392892A JPH05265011A (en) 1992-03-19 1992-03-19 Production of liquid crystal display element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6392892A JPH05265011A (en) 1992-03-19 1992-03-19 Production of liquid crystal display element

Publications (1)

Publication Number Publication Date
JPH05265011A true JPH05265011A (en) 1993-10-15

Family

ID=13243503

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6392892A Pending JPH05265011A (en) 1992-03-19 1992-03-19 Production of liquid crystal display element

Country Status (1)

Country Link
JP (1) JPH05265011A (en)

Cited By (138)

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