JPH05265011A - Production of liquid crystal display element - Google Patents

Production of liquid crystal display element

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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
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Prior art keywords
liquid crystal
glass substrate
crystal display
area
display device
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Pending
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JP6392892A
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Japanese (ja)
Inventor
Katsuki Matsushita
克樹 松下
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Seiko Instr Inc
セイコー電子工業株式会社
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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.
COPYRIGHT: (C)1993,JPO&Japio

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。 The present invention relates to a method of manufacturing an electrode pattern and alignment liquid crystal display device constructed by bonding a pair of glass substrates for liquid crystal subjected to the 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、 The production method of a conventional liquid crystal display device,
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、 Electrode pattern and a pair of glass substrates having undergone the alignment film by polymerizing bonded via a frame-shaped sealing member, after assembly of the liquid crystal display device, which is formed by lacking a part of the sealing material liquid after injection of the liquid crystal by a vacuum injection method, the injection port,
前記液晶注入口を封口する方法が知られている。 The method for 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。 [0003] Before a recent assembling a liquid crystal display device, this forms a liquid crystal display device to supply liquid to one of the glass substrate of the pair of glass substrates, then polymerizing said pair of glass substrates bonded manufacturing method of assembling a liquid crystal display element and has come to be employed. 図3 Figure 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。 , After supplying the liquid onto a glass substrate, a prior art example showing a manufacturing method of the liquid crystal element to bond overlaps with the counter glass substrate. 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。 Figure 1 is a glass substrate for a liquid crystal display device, this glass substrate 1 side, together with the electrode pattern and the alignment layer for display made of ITO or the like (all not shown) are formed, a thermosetting or frame-shaped sealing member 2 made of a light-curable adhesive is formed. 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。 After being supplied to the liquid crystal on the glass substrate 1 is a liquid crystal sealed region surrounded by the frame-like sealing material 2, and through the sealing member 2 other glass substrate constituting the substrate 1 and the counter (not shown) It is polymerized adhesive Te. 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。 On the other hand, in FIG. 3, 3 is an air extrusion dispenser for supplying liquid to the liquid crystal sealing area of ​​the glass substrate 1. このディスペンサ3は、液晶5 The dispenser 3, a liquid crystal 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、 It has become the nozzle portion 3b provided perpendicularly to a lower end of the barrel portion 3a and the cylindrical barrel portion 3a which houses a
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。 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 [0004] Then, the supply of the liquid crystal 5 to the liquid crystal sealed region of the glass substrate 1, and carries the glass substrate 1 under the dispenser 3, is opposed substantially center of the liquid crystal sealing area on the nozzle portion 3b of the dispenser 3 , air hose 4 in this state
からディスペンサ3のバレル部3aにエアを供給して、 By supplying air from the barrel portion 3a of the dispenser 3,
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。 It is carried out in a manner of dropping on the glass substrate 1 of the liquid crystal 5 of the barrel portion 3a in the air pressure from the nozzle 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 [SUMMARY OF THE INVENTION] However, the liquid crystal supply method in the above conventional manufacturing method, since they are to be dropped on the glass substrate 1 by extruding the liquid crystal 5 of the dispenser 3 in air pressure, a certain amount of to provide a liquid crystal 5 to the glass substrate 1, it is necessary to strictly control the air pressure and the air supply time, thus to a troublesome control of the liquid crystal supply amount, also the liquid crystal remaining in the dispenser 3 is glass substrate 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、 To decrease with the repetition of the supply of the liquid crystal 5 to,
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。 Air pressure, and control the air supply amount constant, the change in the liquid crystal remaining in the dispenser 3, the supply amount of the liquid crystal 5 to the glass substrate 1 has fallen vary.

【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。 [0006] Therefore, the liquid crystal 5 is supplied, the thickness of the liquid crystal layer of the glass substrate after the assembled pair of LCD glass substrate (hereinafter, referred to as gap) accuracy depends on the supply amount of the accuracy of the liquid crystal 5 in the conventional manufacturing method with the characteristics, variations in the supply amount of the liquid crystal 5, there is a problem that it becomes a fluctuation of the gap value. 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。 The present invention has been made to solve the conventional such problems, a feature of variation in the gap of the liquid crystal display device supply amount of the liquid crystal to the glass substrate is assembled be varied is small it is an object to provide a method of manufacturing a liquid crystal display element having.

【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 SUMMARY OF THE INVENTION In the method of manufacturing a liquid crystal display device of the present invention, the amount of liquid supplied onto the glass substrate accurately weighed, the gap value of interest in dividing by calculating the area of ​​the liquid crystal in the containment zone, whereas, the frame sealing material, the area of ​​containment zone of area the liquid crystal of the inner region when it is a gap value of the objective bonded pair of glass substrates it is characterized in being formed to be identical with.

【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。 Method of manufacturing a liquid crystal display device of the effects of the present invention obtains the liquid crystal containment zone for the gap value of interest from the amount of liquid supplied onto the glass substrate, forming a frame-shaped sealing member accordingly it is obtained by way, even variations in the supply amount of the liquid crystal occurs, it is possible to obtain a liquid crystal display device which does not cause variations in the gap.

【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。 BRIEF DESCRIPTION OF THE PREFERRED embodiment of the present invention with reference to the drawings. 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。 1, reference numeral 1 is a glass substrate for a liquid crystal display device. 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。 This glass substrate 1 side, the electrode pattern and the alignment film for display made of ITO or the like (all not shown) are formed. 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。 Glass substrate 1 is placed on the stage 6 which can be weighed. 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。 The stage 6 has a temperature adjusting mechanism (not shown), it is kept substantially constant temperature of the glass substrate 1 on the stage. 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。 3 is an air extrusion dispenser for supplying liquid onto the glass substrate 1. 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。 It is kept at the same temperature as the stage 6 by a temperature adjusting mechanism for the liquid crystal 5 are not shown in this dispenser 3. 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。 Further, 7 is a dispenser for applying the sealant 2 in a frame shape. 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。 These dispensers 3,7 is attached to the X-Y-Z robot respectively (not shown), the movement amount and the sealing member of the signal and the air pressure from the dispenser controller 8 X, Y, Z each direction , the discharge amount of liquid crystal is controlled. 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。 9 is a computer for signal processing to process the signals from the stage 6, gives the command to the controller 8.

【0010】次にその工程について図1および図2 [0010] Next, the step 1 and 2
(a)、(b)、(c)を用いて説明する。 (A), it is described with reference to (b), (c). 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。 First, the glass substrate 1 is carried onto the stage 6, the weight is measured. 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))。 Then, by the dispenser 3, a liquid crystal 5 is a predetermined amount dropped supplied over once or several times on the glass substrate 1 (FIG. 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。 Dropping amount at this time is not required to be strictly controlled to a predetermined amount. 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。 When measured again by weight in this state, the weight difference between the glass substrate 1 was measured prior to dropping supplying the liquid crystal, the weight of the liquid crystal dripped supplied.

【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。 [0011] As described above, the the temperature of the glass substrate 1 and the liquid crystal 5 within the dispenser is maintained to be equal, the weight of the liquid crystal dripped supplied, the liquid crystal in the temperature at this that are known in advance the 'em is divided by the specific gravity, the liquid crystal of the volume of the dropped supply is required. 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。 The liquid crystal volume obtained, when the glass substrate is assembled bonded later, do it by dividing the value of the gap required purposes, the area of ​​extension of the liquid crystal when assembled is obtained. 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。 In the method of manufacturing a liquid crystal display device of the present invention, the series of processes are 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。 [0012] Next, a sealing material 2 photocurable by the dispenser 7 is not applied so as to surround the liquid crystal in a frame shape, in which, when the sealing material is crushed to a gap value of the objective, the area of ​​the region surrounded by the inside of the frame-shaped sealing material, to be equal to the area of ​​extension of the above-mentioned liquid crystal. 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))。 For example, if it is calculated dropping amount supplied to the liquid crystal of the glass substrate 1 was 5% frequently than a predetermined amount, the inner area of ​​the frame-shaped sealing material when the frame-shaped sealing material is crushed to a gap value of the objective , a predetermined amount is calculated by the signal processing computer 9 so as to 5% greater relative to the inner area of ​​the frame-shaped sealing material is formed when dropped supplied, the instruction to the controller 8 of the dispenser based on the result may do it with a sealing material 2 is applied in a frame shape by a dispenser 7 with (Figure 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))。 Then, in this way the liquid crystal is dropped supplied, the glass substrate 10 on the opposite side was sprayed glass substrate 1 and the spacer sealing material is formed in a frame shape to face in a vacuum chamber and bonded (FIG. 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。 Thereafter, by irradiating ultraviolet rays by masking the frame-shaped region other than the sealing material, to obtain a liquid crystal display element of the sealing material 2 is cured.

【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。 Effects of the Invention The present invention, according to the amount of the liquid crystal which is supplied to the glass substrate as described above, to form a frame-shaped sealing member, even if variations in the amount of the liquid crystal occurs variation in gap value it can be obtained with less crystal display device. 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。 Therefore it is possible to make good yield a constant liquid crystal display device of the gap value.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE 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。 1 is an explanatory view showing an embodiment of a method of manufacturing a liquid crystal display device 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。 2 is a perspective view showing a step of the manufacturing method of the liquid crystal display device 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。 3 is an explanatory view showing the prior art method of manufacturing a liquid crystal display device.

【符号の説明】 DESCRIPTION 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 sealant 3 dispenser 4 hose 5 LCD 6 stage 7 Dispenser 8 Dispenser controller 9 signal processing computer 10 opposing the glass substrate

Claims (2)

    【特許請求の範囲】 [The claims]
  1. 【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 of fabricating a liquid crystal display device formed by sealing a liquid crystal between two glass substrates, after dropping a liquid crystal on at least one of the glass substrates facing, weighed the dropped liquid crystal, at least method of manufacturing a liquid crystal display element characterized by matching the sealing material is formed like a frame draw the area corresponding to the amount of liquid crystal described above weighed into the glass substrate of one, then bonding two of the glass substrate.
  2. 【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。 As claimed in claim 2 wherein the means for weighing the liquid crystal, after measuring the weight of the glass substrate, the weight of the glass substrate was dropped liquid crystal is measured, the two weight difference of the liquid crystal layer of said liquid crystal specific gravity and purpose It claims a method of manufacturing a liquid crystal display device of the first term, wherein applying a sealant according to the area of ​​the liquid crystal layer obtained by dividing the thickness.
JP6392892A 1992-03-19 1992-03-19 Production of liquid crystal display element Pending JPH05265011A (en)

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US6628365B1 (en) 2002-03-23 2003-09-30 Lg.Philips Lcd Co., Ltd. LCD with UV shielding part at dummy sealant region
US6671030B2 (en) 2000-04-27 2003-12-30 Seiko Epson Corporation Electro-optical device including a contiguous sealing member and method for manufacturing the same
US6712883B2 (en) 2002-02-25 2004-03-30 Lg.Philips Lcd Co., Ltd. Apparatus and method for deaerating liquid crystal
US6724458B2 (en) 2001-12-22 2004-04-20 Lg.Philips Lcd Co., Ltd. Liquid crystal display device and method of fabricating the same
US6738124B2 (en) 2002-03-07 2004-05-18 Lg. Philips Lcd Co., Ltd. Method for fabricating liquid crystal display panel
US6741320B2 (en) 2002-02-20 2004-05-25 L.G.Philips Lcd Co., Ltd. Method for cutting liquid crystal display panel
US6741316B2 (en) 2002-03-06 2004-05-25 Lg.Philips Lcd Co., Ltd. Liquid crystal display device and fabricating method thereof
US6741322B2 (en) 2002-03-06 2004-05-25 Lg. Philips Lcd Co., Ltd. Production line of liquid crystal display device having shield of UV blocking material
US6747725B2 (en) 2002-02-07 2004-06-08 Lg. Philips Lcd Co., Ltd. Device for cutting liquid crystal display panel and method for cutting using the same
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