JPH09127522A - Production of liquid crystal display device - Google Patents
Production of liquid crystal display deviceInfo
- Publication number
- JPH09127522A JPH09127522A JP28586695A JP28586695A JPH09127522A JP H09127522 A JPH09127522 A JP H09127522A JP 28586695 A JP28586695 A JP 28586695A JP 28586695 A JP28586695 A JP 28586695A JP H09127522 A JPH09127522 A JP H09127522A
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- Prior art keywords
- liquid crystal
- spacer
- display device
- crystal display
- manufacturing
- 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.)
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- Liquid Crystal (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、上側および下側の
ガラス基板間に液晶を有し、非画素部にスペーサを配置
してなる液晶表示装置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 of manufacturing a liquid crystal display device having a liquid crystal between upper and lower glass substrates and disposing spacers in non-pixel portions.
【０００２】[0002]
【従来の技術】液晶表示装置は、目的とする電気光学的
特性を得るためには、所定のセルギャップ（液晶層の厚
さ）を得ることが必要である。2. Description of the Related Art In a liquid crystal display device, it is necessary to obtain a predetermined cell gap (thickness of a liquid crystal layer) in order to obtain desired electro-optical characteristics.
【０００３】そこで、所定のセルギャップを得るため、
従来の液晶表示装置では、液晶を封止するガラス基板の
表面は可能な限り平滑に処理し、さらに、液晶内に、例
えば樹脂もしくはシリカでなる径のそろったスペーサを
液晶内に均一に散布することにより、このスペーサがガ
ラス基板の間隔を一定し、所定のセルギャップを保つよ
うにしていた。Therefore, in order to obtain a predetermined cell gap,
In the conventional liquid crystal display device, the surface of the glass substrate that seals the liquid crystal is treated to be as smooth as possible, and furthermore, spacers having a uniform diameter made of, for example, resin or silica are evenly dispersed in the liquid crystal. As a result, the spacers keep the distance between the glass substrates constant and maintain a predetermined cell gap.
【０００４】しかし、この従来の液晶表示装置では、ス
ペーサが画素部を含め液晶全体に均一に散布されている
ため、スペーサに光が吸収・乱反射されて画素部からの
透過光のコントラストが下がるという大きな問題点があ
った。However, in this conventional liquid crystal display device, since the spacers are evenly dispersed over the entire liquid crystal including the pixel portion, light is absorbed and diffusely reflected by the spacers, and the contrast of the transmitted light from the pixel portion is lowered. There was a big problem.
【０００５】そこで、この問題点を解決すべく、図９に
示すように、液晶を封止する２枚のガラス基板１のうち
の一枚は、ＩＴＯ（Indium Tin Oxide) 電極２を形成し
た後、このＩＴＯ電極２が配置されていない非画素部に
のみ、例えば紫外線硬化樹脂でなるスペーサ４を印刷等
により形成し、その後、スペーサ４を支柱にして２枚の
ガラス基板１を接合した、画素部にスペーサのない液晶
表示装置が提案されている。In order to solve this problem, therefore, as shown in FIG. 9, one of the two glass substrates 1 for encapsulating the liquid crystal has an ITO (Indium Tin Oxide) electrode 2 formed thereon. , A spacer 4 made of, for example, an ultraviolet curable resin is formed by printing or the like only on the non-pixel portion where the ITO electrode 2 is not arranged, and then the two glass substrates 1 are joined together by using the spacer 4 as a pillar. A liquid crystal display device without a spacer in its part has been proposed.
【０００６】なお、液晶装置の画素部は、上下のガラス
基板１に形成されたＩＴＯ電極２の交差部分に形成され
る。The pixel portion of the liquid crystal device is formed at the intersection of the ITO electrodes 2 formed on the upper and lower glass substrates 1.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、上述の
提案に係る液晶表示装置では、セルギャップの精度が従
来のスペーサを液晶内に注入したものに比べ、８０〜８
５％程度にとどまり、未だ実用段階に供する程ではない
という問題点があった。However, in the liquid crystal display device according to the above-mentioned proposal, the accuracy of the cell gap is 80 to 8 as compared with the conventional one in which the spacer is injected into the liquid crystal.
There was a problem that it remained at about 5%, which was not enough for practical use.
【０００８】また、印刷等で形成したスペーサが液晶と
直接触れるため、液晶の比抵抗を低下させるような不純
物を含まず、かつ、液晶と反応しない材質でなければな
らず、スペーサに使用される材質が制限され、単に液晶
の中にスペーサを注入するだけでよいという以前のもの
に比べ、製造が簡易でないという問題点があった。Further, since the spacer formed by printing or the like comes into direct contact with the liquid crystal, it must be made of a material that does not contain impurities that lower the specific resistance of the liquid crystal and does not react with the liquid crystal, and is used for the spacer. There is a problem that the manufacturing is not easy as compared with the former one in which the material is limited and it is only necessary to inject the spacer into the liquid crystal.
【０００９】さらに、スペーサを印刷形成する際に、ゴ
ミが基板内に付着しやすく、また、硬化樹脂を塗布する
際に版により配向膜をキズ付け、その結果、表示品位を
低下させてしまう恐れがあるという問題点があった。Furthermore, when the spacers are printed and formed, dust easily adheres to the inside of the substrate, and when the cured resin is applied, the alignment film is scratched by the plate, and as a result, the display quality may be deteriorated. There was a problem that there was.
【００１０】そこで、本発明は上述の問題点に鑑み、超
音波を利用してスペーサを非画素部に配置する液晶表示
装置の製造方法を提供することを目的とする。Therefore, in view of the above problems, it is an object of the present invention to provide a method of manufacturing a liquid crystal display device in which a spacer is arranged in a non-pixel portion using ultrasonic waves.
【００１１】[0011]
【課題を解決するための手段】前述した目的を達成する
ため、請求項１記載の発明は、ガラス基板間にスペーサ
を配置してなる液晶表示装置において、上記スペーサを
超音波振動により非画素部分に移動させることを特徴と
する。In order to achieve the above-mentioned object, the invention according to claim 1 is a liquid crystal display device comprising spacers arranged between glass substrates, wherein the spacers are non-pixel portions by ultrasonic vibration. It is characterized by moving to.
【００１２】請求項２記載の発明は、請求項１記載の発
明において、上記スペーサをガラス基板に設けられる配
向膜の凹溝内に移動させることを特徴とする。A second aspect of the present invention is characterized in that, in the first aspect of the invention, the spacer is moved into the concave groove of the alignment film provided on the glass substrate.
【００１３】請求項３記載の発明は、請求項１記載の発
明において、上記スペーサを上側ガラス基板に設けられ
た配向膜の凹溝と、下側ガラス基板に設けられた配向膜
の凹溝との交差箇所に配置することを特徴とする。According to a third aspect of the present invention, in the first aspect of the present invention, the spacer is provided with a groove of the alignment film provided on the upper glass substrate and a groove of the alignment film provided on the lower glass substrate. It is characterized in that it is placed at the intersection of.
【００１４】請求項４記載の発明は、請求項１記載の発
明において、液晶封入後、ガラス基板を超音波洗浄する
際、超音波振動を加えて上記スペーサを移動させること
を特徴とする。According to a fourth aspect of the present invention, in the first aspect of the invention, when the glass substrate is ultrasonically cleaned after enclosing the liquid crystal, ultrasonic vibration is applied to move the spacer.
【００１５】請求項５記載の発明は、請求項２記載の発
明において、上下ガラス基板に透明電極を形成した後、
配向膜に上記凹溝を形成することを特徴とする。According to the invention of claim 5, in the invention of claim 2, after forming transparent electrodes on the upper and lower glass substrates,
The groove is formed in the alignment film.
【００１６】請求項６記載の発明は、請求項１記載の発
明において、上記スペーサが、ミクロパール樹脂および
シリカのうちいずれか１つでなることを特徴とする。According to a sixth aspect of the present invention, in the first aspect of the invention, the spacer is made of any one of micropearl resin and silica.
【００１７】本発明によれば、ガラス基板間に不均一に
配置されているスペーサを超音波振動により非画素部分
に移動させる。According to the present invention, the spacers arranged non-uniformly between the glass substrates are moved to the non-pixel portion by ultrasonic vibration.
【００１８】すなわち、スペーサは、超音波によりガラ
ス基板に設けられている非画素部分でなる配向膜の凹溝
に移動する。That is, the spacer moves to the concave groove of the alignment film formed in the non-pixel portion provided on the glass substrate by ultrasonic waves.
【００１９】[0019]
【発明の実施の形態】以下、本発明に係る液晶表示装置
の製造方法の一実施形態を図面に基づいて説明する。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a method of manufacturing a liquid crystal display device according to the present invention will be described below with reference to the drawings.
【００２０】図１は本実施形態の液晶表示装置の製造方
法で製造された液晶表示装置の断面図である。FIG. 1 is a sectional view of a liquid crystal display device manufactured by the method of manufacturing a liquid crystal display device according to this embodiment.
【００２１】この液晶表示装置は、図に示すように、厚
さが１ｍｍ程度の上側のガラス基板１０，下側のガラス
基板２０の内側表面には、それぞれ透明なＩＴＯ膜でな
るＩＴＯ電極１１，２１が形成されており、さらに、こ
のＩＴＯ電極１１，２１上に、液晶の分子を所定の形態
に配列させるため、例えばポリイミド樹脂等の高分子膜
でなる配向膜１２，２２が形成されいる。In this liquid crystal display device, as shown in the figure, an ITO electrode 11 made of a transparent ITO film is formed on the inner surfaces of an upper glass substrate 10 and a lower glass substrate 20 having a thickness of about 1 mm, respectively. 21 are formed on the ITO electrodes 11 and 21. Further, on the ITO electrodes 11 and 21, alignment films 12 and 22 made of a polymer film such as a polyimide resin are formed in order to arrange liquid crystal molecules in a predetermined form.
【００２２】また、この実施形態の液晶表示装置は、Ｉ
ＴＯ電極１１および配向膜１２が形成された上側のガラ
ス基板１１と，ＩＴＯ電極２１および配向膜２２が形成
された下側のガラス基板２０とが、側面をシール材３０
で固定され、上下の配向膜１２，２２間が一定の幅でな
るセルギャップＡを有するような構成になっている。Further, the liquid crystal display device of this embodiment is
The upper glass substrate 11 on which the TO electrode 11 and the alignment film 12 are formed and the lower glass substrate 20 on which the ITO electrode 21 and the alignment film 22 are formed have side surfaces with the sealing material 30.
The cell gap A having a constant width is provided between the upper and lower alignment films 12 and 22.
【００２３】さらに、この実施形態の液晶表示装置は、
セルギャップＡ中に液晶４０、例えばマテック液晶が封
止され、スペーサ５０が液晶４０中、ＩＴＯ電極１１，
２１の縁部において形成された凹溝Ｂに限定配置されて
いるように構成されている。ここで、スペーサ５０は、
適度な硬さを有するミクロパール樹脂が一般的である
が、この装置が低温で使用されない場合にはシリカ（Ｓ
ｉＯ2 ) を使用してもよい。Further, the liquid crystal display device of this embodiment is
A liquid crystal 40, for example, a MATEC liquid crystal is sealed in the cell gap A, and a spacer 50 is formed in the liquid crystal 40 to form the ITO electrode 11,
It is configured so as to be limitedly arranged in the concave groove B formed at the edge portion of 21. Here, the spacer 50 is
Micropearl resin having a suitable hardness is generally used, but if this equipment is not used at low temperature, silica (S
iO 2 ) may be used.
【００２４】なお、画素部Ｃは、上側のガラス基板１０
に形成されたＩＴＯ電極１１と下側のガラス基板２０に
形成されたＩＴＯ電極２１とがＸＹ方向に互いに対向す
る箇所に形成される。The pixel portion C is provided on the upper glass substrate 10.
And the ITO electrode 21 formed on the lower glass substrate 20 are formed at positions where they face each other in the XY directions.
【００２５】次に、この実施形態の液晶表示装置の製造
方法について図を参照して説明する。Next, a method of manufacturing the liquid crystal display device of this embodiment will be described with reference to the drawings.
【００２６】図２は実施形態の液晶表示装置の製造方法
を示すフローチャートである。FIG. 2 is a flow chart showing a method of manufacturing the liquid crystal display device of the embodiment.
【００２７】始めに、上側のガラス基板１０および下側
のガラス基板２０にスパッタ法または真空蒸着法により
ＩＴＯ膜でなるＩＴＯ電極１１，２１を形成する（ステ
ップ１００）。First, ITO electrodes 11 and 21 made of an ITO film are formed on the upper glass substrate 10 and the lower glass substrate 20 by a sputtering method or a vacuum evaporation method (step 100).
【００２８】上下のガラス基板１０，２０にＩＴＯ電極
１１，２１を形成すると、液晶表示装置のパネル部分
に、例えばポリアミド酸の溶液を塗布し（ステップ１１
０）、脱水縮合反応させてこれをポリイミド樹脂でなる
配向膜１２，２２を形成する（ステップ１２０）。When the ITO electrodes 11 and 21 are formed on the upper and lower glass substrates 10 and 20, for example, a polyamic acid solution is applied to the panel portion of the liquid crystal display device (step 11).
0), dehydration condensation reaction is performed to form alignment films 12 and 22 made of a polyimide resin (step 120).
【００２９】次に、ポリイミド樹脂でなる配向膜１２，
２２をナイロンやレーヨン等の布で擦り、後に注入され
る液晶を配向させるラビング処理を行う（ステップ１３
０）。Next, the alignment film 12 made of polyimide resin,
22 is rubbed with a cloth such as nylon or rayon, and a rubbing treatment for orienting the liquid crystal injected later is performed (step 13).
0).
【００３０】続いて、スペーサ５０を上下のガラス基板
１０，２０の配向膜１２，２２間に散布した後（ステッ
プ１４０）、上下のガラス基板１０，２０間を、例えば
低融点ガラス，熱硬化樹脂でなるエポキシ樹脂，フェノ
ール樹脂等のシール材３０でシール印刷を行って（ステ
ップ１４５）、上下のガラス基板１０，２０を貼り合わ
せる（ステップ１５０）。Subsequently, the spacers 50 are sprinkled between the alignment films 12 and 22 of the upper and lower glass substrates 10 and 20 (step 140), and then the upper and lower glass substrates 10 and 20 are covered with, for example, a low melting point glass or a thermosetting resin. Seal printing is performed with a sealing material 30 such as an epoxy resin or a phenol resin (step 145), and the upper and lower glass substrates 10 and 20 are bonded (step 150).
【００３１】上下のガラス基板１０，２０を貼り合わせ
ると、不要な部分を切り取る（ブレイク）（ステップ１
６０）。例えば図３では、上のガラス基板１０の不要部
分１０ａが切り取られる部分である。When the upper and lower glass substrates 10 and 20 are bonded together, unnecessary portions are cut (break) (step 1).
60). For example, in FIG. 3, the unnecessary portion 10a of the upper glass substrate 10 is a portion to be cut off.
【００３２】上下のガラス基板１０，２０の不要な部分
を切り落とし形を整えると、次に、液晶４０を真空注入
し（ステップ１７０）、紫外線硬化型樹脂やエポキシ樹
脂等の注入口封止剤で注入口６０を封止する（ステップ
１８０）。After the unnecessary portions of the upper and lower glass substrates 10 and 20 are cut off and the shape is adjusted, the liquid crystal 40 is then vacuum-injected (step 170), and the injection port sealant such as an ultraviolet curable resin or an epoxy resin is used. The inlet 60 is sealed (step 180).
【００３３】次に、液晶４０を注入して封止し終わる
と、外部に付着した液晶等を洗浄するため、液晶４０が
封入されたガラス基板を、洗浄液を有する超音波洗浄槽
に浸し、このガラス基板を超音波洗浄するとともに、こ
の洗浄する際の超音波により配向膜１２，２２上に不規
則に配置されたスペーサ５０を凹溝Ｂに移動配置する
（ステップ１９０）。Next, when the liquid crystal 40 is injected and sealed, in order to clean the liquid crystal and the like attached to the outside, the glass substrate in which the liquid crystal 40 is sealed is dipped in an ultrasonic cleaning tank containing a cleaning liquid. The glass substrate is ultrasonically cleaned, and the spacers 50 irregularly arranged on the alignment films 12 and 22 are moved and arranged in the concave grooves B by the ultrasonic waves during the cleaning (step 190).
【００３４】次に、超音波洗浄が終了すると、液晶４０
が封入されたガラス基板を加温して液晶４０の粘度を落
とし、液晶４０を配向膜１２，２２とをなじませ（親和
させ）再配向させることにより（ステップ１９５）、ス
ペーサが配向膜１２，２２の溝Ｂに設けられた液晶表示
装置を製造する。Next, when the ultrasonic cleaning is completed, the liquid crystal 40
The glass substrate in which is sealed is heated to reduce the viscosity of the liquid crystal 40 and realigns the liquid crystal 40 with the alignment films 12 and 22 (step 195) to realign the alignment film 12 and 22. The liquid crystal display device provided in the groove B of 22 is manufactured.
【００３５】ステップ１９０における超音波洗浄の際の
スペーサ５０の再配置について説明する。The rearrangement of the spacer 50 at the time of ultrasonic cleaning in step 190 will be described.
【００３６】超音波洗浄する前のスペーサ４は、図４に
示すように、画素部Ｃおよび配向膜１２，２２に形成さ
れている凹溝Ｂにおいて不規則に配置されている。As shown in FIG. 4, the spacers 4 before ultrasonic cleaning are irregularly arranged in the concave portions B formed in the pixel portion C and the alignment films 12 and 22.
【００３７】そういう状態において、超音波洗浄を行う
と、超音波振動によりスペーサ５０に力が働き、図５に
示すように、この力により画素部Ｃに存在するスペーサ
５０は自由に移動し、あるものは溝Ｂに、またあるもの
は交差部分であるＤに達し、これにより非画素部分にス
ペーサを移動させる。When ultrasonic cleaning is performed in such a state, a force acts on the spacer 50 due to the ultrasonic vibration, and as shown in FIG. 5, the spacer 50 existing in the pixel portion C freely moves due to this force. Some reach the groove B and some reach the intersection D, which moves the spacer to the non-pixel portion.
【００３８】図６はこの発明の他の実施形態を示すもの
で、これはＸＹ方向に対向配置してなる上下ガラス基板
１０，２０の配向膜１２，２２に凹溝Ｂ，Ｂを対向形成
し、この凹溝Ｂ，Ｂ間にスペーサを移動配置させたもの
で、このような構成によると、スペーサをより安定に支
持することができる。FIG. 6 shows another embodiment of the present invention, in which concave grooves B, B are formed opposite to each other in the alignment films 12, 22 of the upper and lower glass substrates 10, 20 arranged opposite to each other in the XY directions. The spacer is moved between the concave grooves B, B. With such a structure, the spacer can be supported more stably.
【００３９】ここで、超音波洗浄の際にスペーサ５０に
加える超音波強度とスペーサ５０の移動関係について述
べる。Here, the relationship between the ultrasonic intensity applied to the spacer 50 during ultrasonic cleaning and the movement of the spacer 50 will be described.
【００４０】図７は超音波（ＵＳ）の強度とスペーサの
移動の関係を説明する図である。FIG. 7 is a diagram for explaining the relationship between the intensity of ultrasonic waves (US) and the movement of spacers.
【００４１】図に示すように、超音波（ＵＳ）強度が所
定の大きさまでは、スペーサ４が移動することがない
が、この大きさを超えると、配向膜１２、２２の凹溝Ｂ
に向けてけて徐々に移動し始める。As shown in the figure, when the ultrasonic (US) intensity reaches a predetermined level, the spacer 4 does not move, but when it exceeds this level, the concave grooves B of the alignment films 12 and 22 are formed.
Start moving gradually toward.
【００４２】さらに、超音波（ＵＳ）の強度を加えてい
くと、ある所定強度以上になると、スペーサ５０に加わ
る力が大きすぎ、スペーサ５０が凹溝Ｂに移動するに際
し、配向膜１２，２２をキズ付けてしまう。従って、ス
ペーサ５０を画素部Ｃ以外の箇所に移動配置するために
は、使用する超音波の振動数は、所定の範囲内にある必
要がある。Further, as the strength of ultrasonic waves (US) is increased, when the strength exceeds a certain predetermined value, the force applied to the spacer 50 is too large, and when the spacer 50 moves to the groove B, the alignment films 12 and 22. Will be scratched. Therefore, in order to move and arrange the spacer 50 to a position other than the pixel portion C, the frequency of ultrasonic waves used must be within a predetermined range.
【００４３】図８は超音波（ＵＳ）の強度と各パラメー
タとの相関関係を示す図である。FIG. 8 is a diagram showing the correlation between the intensity of ultrasonic waves (US) and each parameter.
【００４４】本実施形態の製造方法では、図に示すよう
に、処理時間が短い程、層内溶液量が多い程、洗浄槽に
入れられた処理枚数が多い程、ガラス基板の貼り合わせ
圧力が高い程超音波強度が小さくなる特徴を有してい
る。In the manufacturing method of the present embodiment, as shown in the figure, the shorter the treatment time, the larger the amount of the solution in the layer, the larger the number of treatments placed in the cleaning tank, the more the bonding pressure of the glass substrate becomes. The higher the ultrasonic wave intensity, the smaller the ultrasonic wave intensity.
【００４５】従って、超音波（ＵＳ）強度が強すぎて配
向膜にキズをつけてしまう場合には、図８に示す
（ａ）、（ｂ）、（ｃ）、（ｄ）の関係を利用して強度
を弱くする必要がある。また、処理時間を調整すること
で、スペーサの配置状態を容易に調整できる。Therefore, when the ultrasonic (US) intensity is too strong to scratch the alignment film, the relationships (a), (b), (c) and (d) shown in FIG. 8 are used. It is necessary to weaken the strength. Moreover, the arrangement state of the spacers can be easily adjusted by adjusting the processing time.
【００４６】この実施例の液晶表示装置の製造方法によ
れば、洗浄工程において超音波をかけるという簡易な方
法で、スペーサ５０を配向膜１２，２２の凹溝Ｂに設け
ることができるため、洗浄工程以外に新たな工程を必要
としない。従って、新たな洗浄工程に対する設備投資が
不要であるとともに、ゴミの付着を最小限におさえるこ
とができる。According to the method of manufacturing the liquid crystal display device of this embodiment, since the spacer 50 can be provided in the concave groove B of the alignment films 12 and 22 by a simple method of applying ultrasonic waves in the cleaning step, cleaning can be performed. No new process other than the process is required. Therefore, it is not necessary to make a capital investment for a new cleaning process, and the adhesion of dust can be minimized.
【００４７】また、この実施形態の液晶表示装置の製造
方法によれば、スペーサ５０が超音波によりを非画素部
分である凹溝Ｂに移動配置され、再度この凹溝Ｂから抜
け出ることが困難であるので、この製造方法で製造され
た液晶表示装置は、時間の経過とともにコントラストの
低下を来すということがない。Further, according to the manufacturing method of the liquid crystal display device of this embodiment, the spacer 50 is moved and arranged by ultrasonic waves into the concave groove B which is a non-pixel portion, and it is difficult to come out of the concave groove B again. Therefore, the liquid crystal display device manufactured by this manufacturing method does not deteriorate in contrast over time.
【００４８】また、この実施例の液晶表示装置の製造方
法によれば、超音波の振動数、時間、等を調整すること
で、スペーサ５０の移動配置状況を制御することが容易
にできる。Further, according to the method of manufacturing the liquid crystal display device of this embodiment, it is possible to easily control the moving and arranging condition of the spacer 50 by adjusting the frequency of ultrasonic waves, time, and the like.
【００４９】さらに、この実施例の液晶表示装置の製造
方法によれば、洗浄槽に複数枚同時に浸すことで同時に
洗浄処理を行えるので、量産性にすぐれている。Further, according to the manufacturing method of the liquid crystal display device of this embodiment, since a plurality of sheets are simultaneously dipped in the washing tank to perform the washing treatment at the same time, the mass productivity is excellent.
【００５０】[0050]
【発明の効果】上述した本発明によれば、以下のような
効果を有する。According to the present invention described above, the following effects are obtained.
【００５１】（１）液晶表示装置を製造する際し、超音
波振動によりガラス基板間に不均一に配置されているス
ペーサが非画素部分に移動配置されるので、印刷等でガ
ラス基板上にスペーサを形成する製造方法と比べ、製造
が簡易であるとともにセルギャップの精度を高くするこ
とができ、加えて、ゴミが基板内に付着しにくく、か
つ、硬化樹脂を塗布する際の版により配向膜をキズ付け
ることもない。このため、本発明は、印刷等でガラス基
板上にスペーサを形成する製造方法と比べ、高品位の製
品を製造できる。(1) When manufacturing a liquid crystal display device, spacers that are non-uniformly arranged between glass substrates are moved to non-pixel portions due to ultrasonic vibration, and therefore spacers are formed on the glass substrate by printing or the like. In comparison with the manufacturing method of forming a film, the manufacturing process is simple and the accuracy of the cell gap can be increased. In addition, dust is unlikely to adhere to the substrate, and the alignment film is formed by the plate when the cured resin is applied. There is no scratch. Therefore, the present invention can manufacture a high-quality product as compared with the manufacturing method in which the spacer is formed on the glass substrate by printing or the like.
【００５２】（２）洗浄工程において液晶を封入したガ
ラス基板を超音波洗浄する際に、このガラス基板を洗浄
するとともに、スペーサを非画素部分に移動配置させる
ため、洗浄工程以外に新たな工程を必要としない。この
ため、新たな洗浄工程に対する設備投資が不要である。(2) When ultrasonically cleaning the glass substrate in which the liquid crystal is sealed in the cleaning process, the glass substrate is cleaned and the spacer is moved to the non-pixel portion, so that a new process other than the cleaning process is performed. do not need. Therefore, there is no need for capital investment for a new cleaning process.
【図１】本実施形態の液晶表示装置の製造方法で製造さ
れた液晶表示装置の断面図。FIG. 1 is a sectional view of a liquid crystal display device manufactured by a method for manufacturing a liquid crystal display device according to an embodiment.
【図２】本実施例の液晶表示装置の製造方法を示すフロ
ーチャート。FIG. 2 is a flowchart showing a method of manufacturing the liquid crystal display device of this embodiment.
【図３】図２中のブレーク工程を説明する説明図。FIG. 3 is an explanatory diagram illustrating a break process in FIG.
【図４】スペーサの配置状態を説明する説明図。FIG. 4 is an explanatory diagram illustrating a spacer arrangement state.
【図５】スペーサの移動状態を説明する説明図。FIG. 5 is an explanatory diagram illustrating a moving state of a spacer.
【図６】スペーサの移動状態を説明する説明図。FIG. 6 is an explanatory diagram illustrating a moving state of a spacer.
【図７】超音波強度とスペーサ移動との関係を説明する
説明図。FIG. 7 is an explanatory diagram illustrating a relationship between ultrasonic intensity and spacer movement.
【図８】超音波（ＵＳ）の強度と各パラメータとの相関
関係を示す説明図。FIG. 8 is an explanatory diagram showing a correlation between ultrasonic wave (US) intensity and each parameter.
【図９】スペーサが画素部以外に設けられた従来の液晶
表示装置を説明する説明図。FIG. 9 is an explanatory diagram illustrating a conventional liquid crystal display device in which a spacer is provided in a portion other than a pixel portion.
１０ 上側のガラス基板 ２０ 下側のガラス基板 １１ 上側のＩＴＯ電極 ２１ 下側のＩＴＯ電極 １２ 上側の配向膜 ２２ 下側の配向膜 ３０ シール材 ４０ 液晶 ５０ スペーサ ６０ 封止口 Ａ セルギャップ Ｂ 配向膜に形成された凹溝 Ｃ 画素部 Ｄ 上の配向膜に形成された凹溝と下の配向膜に形
成された凹溝の交差箇所10 Upper Glass Substrate 20 Lower Glass Substrate 11 Upper ITO Electrode 21 Lower ITO Electrode 12 Upper Alignment Film 22 Lower Alignment Film 30 Sealing Material 40 Liquid Crystal 50 Spacer 60 Sealing Port A Cell Gap B Alignment Film Grooves formed in C C intersections of the groove formed in the alignment film on the pixel portion D and the groove formed in the lower alignment film
Claims (6)
液晶表示装置において、 上記スペーサを超音波振動により非画素部分に移動させ
ることを特徴とする液晶表示装置の製造方法。1. A method of manufacturing a liquid crystal display device, wherein a spacer is arranged between glass substrates, and the spacer is moved to a non-pixel portion by ultrasonic vibration.
配向膜の凹溝内に移動させることを特徴とする請求項１
記載の液晶表示装置の製造方法。2. The spacer is moved into a groove of an alignment film provided on a glass substrate.
The manufacturing method of the liquid crystal display device according to the above.
れた配向膜の凹溝と、下側ガラス基板に設けられた配向
膜の凹溝との交差箇所に配置することを特徴とする請求
項１記載の液晶表示装置の製造方法。3. The spacer is arranged at the intersection of the groove of the alignment film provided on the upper glass substrate and the groove of the alignment film provided on the lower glass substrate. A method for manufacturing the liquid crystal display device described.
る際、超音波振動を加えて上記スペーサを移動させるこ
とを特徴とする請求項１記載の液晶表示装置の製造方
法。4. The method of manufacturing a liquid crystal display device according to claim 1, wherein after the liquid crystal is sealed, when the glass substrate is subjected to ultrasonic cleaning, ultrasonic vibration is applied to move the spacer.
後、配向膜に上記凹溝を形成することを特徴とする請求
項２記載の液晶表示装置の製造方法。5. The method of manufacturing a liquid crystal display device according to claim 2, wherein after forming transparent electrodes on the upper and lower glass substrates, the groove is formed in the alignment film.
びシリカのうちいずれか１つでなることを特徴とする請
求項１記載の液晶表示装置の製造方法。6. The method for manufacturing a liquid crystal display device according to claim 1, wherein the spacer is made of any one of micropearl resin and silica.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28586695A JPH09127522A (en) | 1995-11-02 | 1995-11-02 | Production of liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28586695A JPH09127522A (en) | 1995-11-02 | 1995-11-02 | Production of liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09127522A true JPH09127522A (en) | 1997-05-16 |
Family
ID=17697059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28586695A Withdrawn JPH09127522A (en) | 1995-11-02 | 1995-11-02 | Production of liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09127522A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007188112A (en) * | 2007-04-16 | 2007-07-26 | Seiko Epson Corp | Liquid crystal device, method for manufacturing liquid crystal device, and electronic apparatus |
| US7880855B2 (en) | 2005-04-20 | 2011-02-01 | Lg Display Co., Ltd. | LCD device and method having a ball spacer in an alignment film groove having a groove width greater than the spacer diameter and curing a seal pattern and the spacer at the same time after bonding the substrates |
-
1995
- 1995-11-02 JP JP28586695A patent/JPH09127522A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7880855B2 (en) | 2005-04-20 | 2011-02-01 | Lg Display Co., Ltd. | LCD device and method having a ball spacer in an alignment film groove having a groove width greater than the spacer diameter and curing a seal pattern and the spacer at the same time after bonding the substrates |
| US7907242B2 (en) | 2005-04-20 | 2011-03-15 | Lg. Display Co., Ltd. | Liquid crystal display device and method for fabricating same having spacer in alignment groove in which the groove width is greater than the spacer diameter |
| DE102005060982B4 (en) * | 2005-04-20 | 2013-02-28 | Lg Display Co., Ltd. | Liquid crystal display device and method for its production |
| JP2007188112A (en) * | 2007-04-16 | 2007-07-26 | Seiko Epson Corp | Liquid crystal device, method for manufacturing liquid crystal device, and electronic apparatus |
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