JPH09230357A - Production of liquid crystal panel and liquid crystal cell used for the same - Google Patents

Production of liquid crystal panel and liquid crystal cell used for the same

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Publication number
JPH09230357A
JPH09230357A JP5821196A JP5821196A JPH09230357A JP H09230357 A JPH09230357 A JP H09230357A JP 5821196 A JP5821196 A JP 5821196A JP 5821196 A JP5821196 A JP 5821196A JP H09230357 A JPH09230357 A JP H09230357A
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liquid crystal
injection port
substrate
electrode substrate
electrode
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JP5821196A
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Japanese (ja)
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Teruhiko Furushima
輝彦 古島
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Canon Inc
キヤノン株式会社
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Abstract

PROBLEM TO BE SOLVED: To make it possible to efficiently inject liquid crystals at a high yield with the smallest possible amount of liquid crystals by providing the peripheral edge on a first electrode substrate with a liquid crystal injection port toward one end side of the substrate and using a sealing material in forming the sealing pattern having projecting parts in contact with the side having the injection port at both ends of this side. SOLUTION: The projecting parts 5 are formed at both ends of the liquid crystal injection port 4. Since the thickness of the projecting parts 5 is larger than the thickness of liquid crystals 6, the liquid crystals 6 flow out of the liquid crystal injection port 4 toward a transverse direction are blocked by the projecting parts 5 and cannot flow outward. Then, the liquid crystals 6 are held at the periphery of the liquid crystal injection port 4 by surface tension and are gradually moved from the liquid crystal injection port 4 into a liquid crystal cell, by which the liquid crystals are packed into this liquid crystal cell. The atmosphere is returned to the atm. pressure after the completion of the packing of the liquid crystals 6 and the excess liquid crystals 6 are removed. A sealant is then dropped to the liquid crystal injection port 4 and is cured. As a result, the efficient use of the dropped liquid crystals 6 is made possible and, therefore, the high working efficiency is obtd., the packing failures are eliminated and the yield of the production is enhanced.

Description

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

【0001】 [0001]

【発明の属する技術分野】本発明は、フラットパネルディスプレイ、プロジェクションディスプレイ、プリンター等に用いられるライトバルブに使用される液晶パネルの製造方法、及び該製造方法に用いられる液晶セルに関する。 BACKGROUND OF THE INVENTION The present invention provides a flat panel display, projection display, a method of manufacturing a liquid crystal panel used in a light valve used in a printer or the like, and a liquid crystal cell used in the production method.

【0002】 [0002]

【従来の技術】従来、液晶表示装置の主たる構成部品である液晶パネルは、表面に電極や配向制御膜等を作り込んだ一対の電極基板をシール材により貼り合わせた液晶セルに液晶を注入し、封止してなる。 Conventionally, a liquid crystal panel which is a main component of a liquid crystal display device, a liquid crystal is injected a pair of electrode substrates which elaborate made into an electrode and an alignment control film or the like on the surface on the liquid crystal cell was bonded with a sealant , it becomes sealed. 図5に従来の液晶セル(液晶注入前)を示す。 It shows a conventional liquid crystal cell (liquid crystal before injection) in FIG. 図中、1,2は電極基板、 In the figure, the electrode substrate 1,
3はシール材、4は液晶注入口である。 3 the sealing member, and 4 a liquid crystal inlet.

【0003】図5に示されるように、シール材の封止パターンは一方の電極基板上の周縁部に、該基板の一端辺に向かって液晶注入口を有するように形成され、もう一方の電極基板を重ねて所定の圧力をかけ、上記シール材を多少押しつぶすようにした状態で該シール材を硬化させる。 [0003] As shown in FIG. 5, the peripheral portion of the one electrode substrate sealing pattern of the sealing material, is formed to have a liquid crystal inlet toward one end side of the substrate, the other electrode applying a predetermined pressure on top of the substrate, curing the sealant in a state to crush the sealing material somewhat. こうして作製された液晶セルを真空雰囲気下に置き、上記液晶注入口から液晶を注入し、液晶注入口からあふれた液晶を除去して該液晶注入口を封止して液晶パネルが完成する。 The thus fabricated liquid crystal cell placed under a vacuum atmosphere, a liquid crystal is injected from the liquid crystal injection port, the liquid crystal panel is completed the liquid crystal overflowing from the liquid crystal injection port was removed by sealing the liquid crystal inlet.

【0004】 [0004]

【発明が解決しようとする課題】しかしながら、液晶を注入する際に、液晶注入口を上にして液晶パネルを立て置きにし、上記液晶注入口に液晶を滴下すると、液晶がシール材を伝って横方向に流れ、内部に入る液晶量が不足する。 [SUMMARY OF THE INVENTION However, when injecting the liquid, and every vertical liquid crystal panel and the liquid crystal injection port above and along the liquid crystal is dropped on the liquid crystal injection port, the liquid crystal sealing material transverse flows in a direction, insufficient amount of liquid crystal into the interior. 従って、滴下する液晶量を増加したり、複数回にわたって液晶を滴下するなどの対策が取られているが、液晶の注入不良が発生し易く、液晶パネルの製造歩留を低下せしめる原因であった。 Therefore, it increases the amount of liquid crystal is dropped, but measures such as dropping the liquid crystal is taken a plurality of times, easily liquid crystal injection failure occurs, was responsible for allowed to lower the manufacturing yield of the liquid crystal panel . また、工程自体が繁雑になり作業効率が悪く、所定の注入量よりもかなり過剰の液晶が必要であるため経済効率も悪かった。 Moreover, the working efficiency process itself becomes complicated poor economic efficiency poor due to the need for large excess of the liquid crystal than the predetermined injection amount.

【0005】本発明は、このような問題点を解決し、作業効率が良く、経済効率の高い液晶パネルの製造方法を提供するものであり、さらに、最小限の液晶量で効率良く且つ歩留良く液晶を注入し得る液晶セルを提供するものである。 [0005] The present invention is to solve the above problems, good working efficiency, there is provided a method for producing a highly economical efficiency liquid crystal panel, further, efficiently and with a minimum amount of liquid crystal yield well it is to provide a liquid crystal cell capable of injecting the liquid crystal.

【0006】 [0006]

【課題を解決するための手段】本発明の第一は液晶パネルの製造方法であって、第一の電極基板上の周縁部に、 The first of the present invention According to an aspect of the method of manufacturing a liquid crystal panel, the peripheral portion of the first electrode on the substrate,
該基板の一端辺に向かって液晶注入口を有し且つ該注入口を有する辺の両端部に該辺に接して突出部を有する封止パターンをシール材により形成し、上記液晶注入口が位置する第一の電極基板の端辺が第二の電極基板の端辺よりも外側に突出するように第一の電極基板に第二の電極基板を重ね、該第二の電極基板に所定圧をかけた上で上記シール材を硬化させて液晶セルを形成し、真空雰囲気下で該液晶セルを上記液晶注入口が上になるように立て置きにした状態で該液晶注入口に液晶を滴下し、上記シール材で囲繞された領域に液晶を注入し、該液晶注入口を封止することを特徴とする。 The sealing pattern having protrusions in contact with 該辺 at both ends of the side and having a infusion inlet has a liquid crystal inlet is formed by the sealing member toward the one end side of the substrate, the liquid crystal injection port is located edge of the first electrode substrate is a second electrode substrate superposed on the first electrode substrate so as to protrude outside the edge of the second electrode substrate, a predetermined pressure to said second electrode substrate on multiplied by curing the sealing material to form a liquid crystal cell, the liquid crystal cell liquid crystal is dropped on the liquid crystal injection port while every vertical so that the liquid crystal injection port is at the top in a vacuum atmosphere and injecting liquid crystal in a region surrounded by the sealing material, characterized in that to seal the liquid crystal injection port.

【0007】本発明の第二は上記第一の発明とは異なる液晶パネルの製造方法であって、第一の電極基板上の周縁部に、該基板の一端辺に向かって液晶注入口を有する封止パターンをシール材により形成し、上記液晶注入口が位置する第一の基板の端辺が第二の電極基板の端辺よりも外側に突出するように第一の電極基板に第二の電極基板を重ね、該第二の電極基板に所定圧をかけた上で上記シール材を硬化させた後、上記液晶注入口の位置するシール材の一辺の両端部に接して液晶厚よりも厚い突出部を第一の電極基板上に形成して液晶セルとし、真空雰囲気下で該液晶セルを上記液晶注入口が上になるように立て置きにした状態で該液晶注入口に液晶を滴下し、上記シール材で囲繞された領域に液晶を注入し、該液晶注入口を封止するこ [0007] The second invention is a manufacturing method of a different liquid crystal panel from the above first invention, the peripheral portion of the first electrode on the substrate, with a liquid crystal inlet toward one end side of the substrate the seal pattern is formed by a sealing material, the end edges of the first substrate on which the liquid crystal injection port is located, the second to the first electrode substrate so as to protrude outside the edge of the second electrode substrate overlapping electrode substrate, after curing the sealing material after having subjected to a predetermined pressure to said second electrode substrate, thicker than the liquid crystal thickness in contact with the both end portions of one side of the seal member positioned in the liquid crystal injection port a liquid crystal cell protrusions formed on the first electrode on the substrate, the liquid crystal cell liquid crystal is dropped on the liquid crystal injection port while every vertical so that the liquid crystal injection port is at the top in a vacuum atmosphere and injecting liquid crystal in a region surrounded by the sealing material, the sealing child the liquid crystal injection port を特徴とする。 The features.

【0008】本発明の第三は液晶セルであり、第一の電極基板と第二の電極基板とが、基板周縁部において液晶注入口を開けてシール材を介して貼り合わされてなる液晶セルであって、液晶注入口の位置する第一の電極基板端辺が、第二の電極基板の端辺よりも外側に突出しており、該液晶注入口の位置するシール材の一辺の両端部に、該辺に接触し且つ第二の電極基板より外側に突出する液晶厚よりも厚い突出部を有することを特徴とする。 [0008] The third aspect of the present invention is a liquid crystal cell, a first electrode substrate and the second electrode substrate, a liquid crystal cell formed by bonding through a sealing member to open the liquid crystal inlet in the substrate peripheral portion there, the first electrode substrate end side located in the liquid crystal injection port, from the end edges of the second electrode substrate protrudes outward at both ends of one side of the seal member positioned in the liquid crystal injection port, It characterized in that it has a thicker protruding portion than the liquid crystal thickness projecting outwardly from and the second electrode substrate in contact with 該辺.

【0009】本発明第三の液晶セルにおいて、シール材の一辺の両端部に有する突出部は、シール材を第一の電極基板上に配する際に同時に該シール材により形成しても、第一と第二の電極基板を貼り合わせた後に所定の位置に上記シール材或いはシール材以外の素材により形成しても、いずれでも構わない。 [0009] In the present invention a third liquid crystal cell, the projecting portion having both ends of one side of the sealing material, be formed by simultaneously the sealing member when arranging the sealing material on the first electrode on the substrate, the be formed by the sealing material or non sealant material in place after bonding first and the second electrode substrate, it may be any.

【0010】 [0010]

【発明の実施の形態】本発明においては、液晶セルの液晶注入口の両側に、シール材に接して突出部を設けることにより、該突出部によって液晶注入口から横方向に流れた液晶が堰き止められるため、滴下した液晶に無駄がなく、注入途中で液晶が不足することもないため、最小限の液晶量で良好に液晶セル内に液晶を充填して液晶パネルを作製することができる。 In DETAILED DESCRIPTION OF THE INVENTION The present invention, on both sides of the liquid crystal injection port of the liquid crystal cell, by providing a protrusion in contact with the sealing material, liquid crystal flowing laterally from the liquid crystal inlet by the projecting portion weir order to be stopped, there is no wasted dripped liquid crystal, because it is no liquid crystal is insufficient in the middle injection, it is possible to produce a liquid crystal panel by filling a liquid crystal into better the liquid crystal cell with a minimum amount of liquid crystal. 以下に本発明を詳細に説明する。 The present invention will be described in detail below.

【0011】図1〜図4は本発明の液晶セル及び液晶パネルの一実施形態を示すものである。 [0011] 1 to 4 illustrates one embodiment of a liquid crystal cell and the liquid crystal panel of the present invention. 図中、先に説明した図3と同じ部位には同じ符号を付して説明を省略する。 In the figure, the same portions as in FIG. 3 described above will not be described with the same reference numbers. 図3中、5はシール材に接して形成された突出部、 In Figure 3, the protrusion 5 which is formed in contact with the sealing member,
6は液晶である。 6 is a liquid crystal.

【0012】図1は第一の電極基板1上に配置したシール材の封止パターンである。 [0012] Figure 1 is a sealing pattern of the sealing material disposed on the first electrode substrate 1. 本図に示すように、シール材3で封止パターンを形成すると同時に、本発明の特徴である突出部5をも形成しておくことにより、工程数を増やすことなく本発明の効果を得ることができる。 As shown in the figure, at the same time to form a seal pattern in the sealing member 3, by previously also form protrusions 5, which is a feature of the present invention, the advantages of the present invention without increasing the number of steps can. シール材3としてはUV硬化型樹脂、例えばUV硬化型のアクリル樹脂が好適に用いられる。 As the sealant 3 UV-curable resin, such as UV-curable acrylic resin is preferably used. また、シール材3には粒径5μmのスペーサーを混合しておく。 Further, the sealing material 3 in advance by mixing spacer having a particle diameter of 5 [mu] m. このシール材で図1の封止パターンを例えば幅300μm、厚さ20 The sealing material in a sealing pattern, for example, the width 300μm in FIG. 1, a thickness of 20
μmでディスペンサーにより基板上に形成する。 Formed on a substrate by a dispenser in [mu] m.

【0013】次に、図2に示すように、第二の電極基板2を第一の電極基板とは端辺をずらして重ね、加圧しながら紫外線を照射することによってシール材3を硬化する。 [0013] Next, as shown in FIG. 2, the second electrode substrate 2 overlapped by shifting the end side from the first electrode substrate, curing the sealing material 3 by irradiating ultraviolet rays under pressure. 両基板の間隔は、シール材3に混合されたスペーサーによって5μmに保たれ、加圧によってシール材3は押し広げられている。 Distance between the substrates is kept at 5μm by mixed spacer seal member 3, the sealing member 3 by the pressure is pressed and expanded. しかしながら、第二の電極基板2 However, the second electrode substrate 2
からはみ出た突出部5においては、該第二の基板2によって加圧されないため、封止パターンを形成した時点での厚さ20μmを維持している。 In protruding portion 5 which protrudes from, since the said second substrate 2 is not pressurized, it maintains the thickness 20μm at the time of forming the sealing pattern. 従って、図3に示すように、図2のA−A'断面における突出部5は液晶厚(セルギャップ)よりも厚くなる。 Accordingly, as shown in FIG. 3, the projecting portion 5 in the A-A 'cross section of the FIG. 2 is thicker than the liquid crystal thickness (cell gap).

【0014】図4は上記液晶セルを液晶注入口4が上になるように立て置きし、真空雰囲気下で液晶注入口4に液晶を滴下し注入する工程を示すものである。 [0014] FIG. 4 shows a step of then placed upright so that the liquid crystal injection port 4 of the liquid crystal cell is on top, and dropping a liquid crystal in the liquid crystal injection port 4 in a vacuum atmosphere infusion. 本図に示されるように、液晶注入口4の両端には突出部5が形成されており、しかも該突出部5は厚みが液晶厚よりも厚いため、液晶注入口4から横方向に流れ出した液晶6は該突出部5に阻まれて外側へ流れる出ることができない。 As shown in this figure, the both ends of the liquid crystal inlet 4 is formed with a projecting portion 5, moreover the projecting portion 5 for is thicker than the liquid crystal thickness a thickness, flowing out from the liquid crystal injection port 4 in the transverse direction the liquid crystal 6 can not exit flow to the outside are blocked by the projecting portion 5. 従って、該液晶は表面張力によって液晶注入口4周辺に保持され、徐々に液晶注入口4から液晶セル内へと移動し、該液晶セルに充填される。 Thus, the liquid crystal is held in the liquid crystal injection port 4 near the surface tension, gradually moves from the liquid crystal injection port 4 into the liquid crystal cell is filled into the liquid crystal cell. 液晶の充填が完了した後、雰囲気を大気圧に戻し、余分の液晶を除去して封止材を液晶注入口4に滴下し硬化する。 After filling the liquid crystal is completed, returning the atmosphere to atmospheric pressure, it is added dropwise to cure the sealing material to remove excess liquid in the liquid crystal injection port 4.

【0015】本発明の液晶セルにおいて、突出部5を液晶注入口4の際ではなく、該注入口4の位置するシール材の辺の両端部に形成した理由は、液晶注入口4の際に突出部5を形成したのでは保持できる液晶量が少なく、 [0015] In the liquid crystal cell of the present invention, the projecting portion 5 rather than the time of liquid crystal injection port 4, the reason formed at both end portions of the side of the sealing member located in the infusion inlet 4, when the liquid crystal inlet 4 than to form the protrusion portion 5 is small amount of liquid crystal can be held,
滴下回数が多くなるためで、両端部に形成することで1 In order to dripping times increases, by forming the both end portions 1
回に滴下・保持し得る液晶量が増え、滴下回数を低減、 Crystal amount is increased to be dropped and held in time, reducing the dropping number,
或いは1回の滴下で液晶を充填することができるためである。 Alternatively it it it is possible to fill the liquid crystal in one dropping.

【0016】上記実施形態においては、シール材により封止パターンを形成すると同時に突出部5も形成したが、図5に示す従来の封止パターンを形成して第二の電極基板と貼り合わせた後に所定の位置に突出部5を形成しても構わない。 [0016] In the above embodiment has been also formed projecting portions 5 at the same time forming a sealing pattern with a sealing material, after the bonding to the second electrode substrate to form a conventional seal pattern shown in FIG. 5 it may be formed a protrusion 5 at a predetermined position.

【0017】 [0017]

【発明の効果】以上詳述したように、本願発明においては液晶注入工程において滴下した液晶を無駄なく用いることができるため、作業効率が高く、しかも充填不良がなく製造歩留が高い。 As described above, according to the present invention, since in the present invention can be used without waste liquid was dropped in a liquid crystal injection step, it is high and high production yield without filling failure work efficiency. よって製造コストが削減され、安価で信頼性の高い液晶パネルが提供される。 Thus manufacturing cost is reduced, a highly reliable liquid crystal panel is provided at low cost.

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

【図1】本発明の一実施形態の液晶セルのシール材の封止パターンを示す図である。 1 is a diagram showing the sealing pattern of the sealing material of the liquid crystal cell of an embodiment of the present invention.

【図2】図1に示した実施形態の液晶セルを示す図である。 2 is a diagram showing a liquid crystal cell of the embodiment shown in FIG.

【図3】図2に示した液晶セルのA−A'断面図である。 3 is a A-A 'sectional view of a liquid crystal cell shown in FIG.

【図4】図2に示した液晶セルの液晶注入工程を示す図である。 4 is a diagram showing a liquid crystal injection step of the liquid crystal cell shown in FIG.

【図5】従来の液晶セルを示す図である。 5 is a diagram showing a conventional liquid crystal cell.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 第一の電極基板 2 第二の電極基板 3 シール材 4 液晶注入口 5 突出部 6 液晶 1 The first electrode substrate 2 second electrode substrate 3 seal member 4 the liquid crystal injection port 5 extending portion 6 LCD

Claims (5)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 第一の電極基板上の周縁部に、該基板の一端辺に向かって液晶注入口を有し且つ該注入口を有する辺の両端部に該辺に接して突出部を有する封止パターンをシール材により形成し、上記液晶注入口が位置する第一の電極基板の端辺が第二の電極基板の端辺よりも外側に突出するように第一の電極基板に第二の電極基板を重ね、該第二の電極基板に所定圧をかけた上で上記シール材を硬化させて液晶セルを形成し、真空雰囲気下で該液晶セルを上記液晶注入口が上になるように立て置きにした状態で該液晶注入口に液晶を滴下し、上記シール材で囲繞された領域に液晶を注入し、該液晶注入口を封止することを特徴とする液晶パネルの製造方法。 To 1. A peripheral portion of the first electrode on the substrate, has a protruding portion in contact with the 該辺 at both ends of the side and having a infusion inlet has a liquid crystal inlet toward one end side of the substrate the seal pattern is formed by a sealing member, the second to the first electrode substrate so that the end sides of the first electrode substrate on which the liquid crystal injection port is located is protruded outside the edge of the second electrode substrate of repeated electrode substrate, after applying a predetermined pressure to said second electrode substrate by curing the sealing material to form a liquid crystal cell, so that the liquid crystal cell above the liquid crystal injection port is at the top in a vacuum atmosphere liquid crystal is dropped on the liquid crystal injection port while every stand, the liquid crystal is injected in a region surrounded by the sealing material, a method of manufacturing a liquid crystal panel, characterized in that for sealing the liquid crystal inlet.
  2. 【請求項2】 第一の電極基板上の周縁部に、該基板の一端辺に向かって液晶注入口を有する封止パターンをシール材により形成し、上記液晶注入口が位置する第一の基板の端辺が第二の電極基板の端辺よりも外側に突出するように第一の電極基板に第二の電極基板を重ね、該第二の電極基板に所定圧をかけた上で上記シール材を硬化させた後、上記液晶注入口の位置するシール材の一辺の両端部に接して液晶厚よりも厚い突出部を第一の電極基板上に形成して液晶セルとし、真空雰囲気下で該液晶セルを上記液晶注入口が上になるように立て置きにした状態で該液晶注入口に液晶を滴下し、上記シール材で囲繞された領域に液晶を注入し、該液晶注入口を封止することを特徴とする液晶パネルの製造方法。 To 2. A peripheral portion of the first electrode on the substrate, a sealing pattern with a liquid crystal inlet toward one end side of the substrate is formed by a sealing member, a first substrate on which the liquid crystal injection port is located end sides second from the end side of the electrode substrate overlapping a second electrode substrate to the first electrode substrate so as to protrude outwardly, the seal on multiplied by predetermined pressure to said second electrode substrate after curing the wood, in contact with both end portions of one side of the seal member positioned in the liquid crystal injection port to form a thick projecting portion than the liquid crystal thickness a first electrode on the substrate and the liquid crystal cell, in a vacuum atmosphere the liquid crystal cell liquid crystal is dropped on the liquid crystal injection port while every vertical so that the liquid crystal injection port is at the top, and injecting a liquid crystal in a region surrounded by the sealing material, sealing the liquid crystal inlet method of manufacturing a liquid crystal panel, characterized in that the stop.
  3. 【請求項3】 第一の電極基板と第二の電極基板とが、 3. A first electrode substrate and the second electrode substrate,
    基板周縁部において液晶注入口を開けてシール材を介して貼り合わされてなる液晶セルであって、液晶注入口の位置する第一の電極基板端辺が、第二の電極基板の端辺よりも外側に突出しており、該液晶注入口の位置するシール材の一辺の両端部に、該辺に接触し且つ第二の電極基板より外側に突出する液晶厚よりも厚い突出部を有することを特徴とする液晶セル。 A liquid crystal cell comprising been bonded to each other with a sealing member to open the liquid crystal inlet in the peripheral portion of the substrate, the first electrode substrate end side located in the liquid crystal injection port, from the end edges of the second electrode substrate It protrudes outwardly, characterized in that the both ends of one side of liquid crystal inlet position sealing material, having a thick projecting portion than the liquid crystal thickness projecting outwardly from and the second electrode substrate in contact with 該辺a liquid crystal cell to.
  4. 【請求項4】 上記シール材の一辺両端部に設けた突出部が該シール材で形成されている請求項3記載の液晶セル。 Wherein the sealing material liquid crystal cell of the projecting portions provided on side end portions claim 3 which is formed in the sealing material.
  5. 【請求項5】 上記シール材がUV硬化型樹脂からなる請求項3及び4記載の液晶セル。 5. A liquid crystal cell according to claim 3 and 4, wherein the sealing material is made of UV curable resin.
JP5821196A 1996-02-22 1996-02-22 Production of liquid crystal panel and liquid crystal cell used for the same Pending JPH09230357A (en)

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