JPH04275527A - Production of liquid crystal display panel - Google Patents

Production of liquid crystal display panel

Info

Publication number
JPH04275527A
JPH04275527A JP3703991A JP3703991A JPH04275527A JP H04275527 A JPH04275527 A JP H04275527A JP 3703991 A JP3703991 A JP 3703991A JP 3703991 A JP3703991 A JP 3703991A JP H04275527 A JPH04275527 A JP H04275527A
Authority
JP
Japan
Prior art keywords
liquid crystal
spacer
pair
transparent substrates
display panel
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.)
Withdrawn
Application number
JP3703991A
Other languages
Japanese (ja)
Inventor
Seiji Mochizuki
望月 盛児
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP3703991A priority Critical patent/JPH04275527A/en
Publication of JPH04275527A publication Critical patent/JPH04275527A/en
Withdrawn legal-status Critical Current

Links

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  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

PURPOSE:To obviate the contamination and dust sticking within the liquid crystal display panel of the conventional method relating to the process for producing the above-mentioned panel and more particularly the method for feeding spacers in liquid crystals. CONSTITUTION:The spherical spacers 10 are mixed with the liquid crystal 9. The outer peripheral parts of a pair of transparent substrates 4 and 7 facing each other apart a spacing where the spacers 10 are movable are sealed by a sealing material 8. A liquid crystal injection port 13 is provided on one side of the sealing material 8 and the spacers 10 are injected together with the liquid crystal 9 into the opposite spacing between a pair of the transparent substrates 4 and 7. A pair of the transparent substrates 4 and 7 are thereafter pressed in the opposite directions thereof and the spacers 10 are crimped by the inside surfaces of a pair of the transparent substrates 4 and 7, by which the panel is constituted.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】本発明は液晶ディスプレイパネル
の製造方法、特に注入した液晶の厚さ(液晶注入間隙)
を一定にするスペーサの挿入方法に関する。
[Industrial Application Field] The present invention relates to a method for manufacturing a liquid crystal display panel, and in particular, the thickness of the injected liquid crystal (liquid crystal injection gap).
This invention relates to a method of inserting a spacer to maintain a constant value.

【0002】近年、薄型,軽量,低消費電力である等の
特徴を有する液晶ディスプレイパネルは、OA機器,パ
ーソナルコンピュータ,携帯テレビ、自動車・航空機等
の計器類に広く利用されるようになり、今後、一層の市
場拡大が期待できる電子デバイスの一つである。
[0002] In recent years, liquid crystal display panels, which have characteristics such as being thin, lightweight, and low power consumption, have come to be widely used in office automation equipment, personal computers, portable televisions, and instruments in automobiles, aircraft, etc. It is one of the electronic devices that is expected to see further market expansion.

【0003】0003

【従来の技術】図3は液晶ディスプレイパネルの主要構
成を示す断面図であり、液晶ディスプレイパネル1は、
透明電極2を形成しその上に配向膜3を被着したガラス
基板4、透明電極5を形成しその上に配向膜6を被着し
たガラス基板7、ガラス基板4と7の対向面の周囲に被
着した封止材8、ガラス基板4と7との対向間隙に充填
した液晶9、ガラス基板4と7との対向ギャップを一定
にする球形スペーサ10構成し、液晶注入口を封止樹脂
11が封止する。
2. Description of the Related Art FIG. 3 is a sectional view showing the main structure of a liquid crystal display panel.
A glass substrate 4 on which a transparent electrode 2 is formed and an alignment film 3 on it, a glass substrate 7 on which a transparent electrode 5 is formed and an alignment film 6 on it, and the periphery of opposing surfaces of the glass substrates 4 and 7. A liquid crystal 9 is filled in the opposing gap between the glass substrates 4 and 7, a spherical spacer 10 keeps the opposing gap between the glass substrates 4 and 7 constant, and the liquid crystal injection port is covered with a sealing resin. 11 seals.

【0004】図4は液晶ディスプレイパネルにおける従
来のスペーサ挿入方法の説明図であり、ガラス基板4に
透明電極2を形成しその上に配向膜3を被着したのち、
配向膜3の上にスペーサ10を散布する。スペーサ10
の散布方法は、スペーサ10をスペーサ散布液(一般に
液体フレオン)12に混合しそれを配向膜3の上に散布
すると、スペーサ散布液12が蒸発しスペーサ10だけ
が残る。
FIG. 4 is an explanatory diagram of a conventional spacer insertion method in a liquid crystal display panel. After forming a transparent electrode 2 on a glass substrate 4 and depositing an alignment film 3 thereon,
Spacers 10 are sprinkled on the alignment film 3. Spacer 10
In the spraying method, the spacer 10 is mixed with a spacer spray liquid (generally liquid Freon) 12 and the mixture is sprayed onto the alignment film 3, and then the spacer spray liquid 12 evaporates and only the spacer 10 remains.

【0005】このようにスペーサ10の散布が終わると
、配向膜6を下にしたガラス基板7をスペーサ10の上
に重ね、封止材8でガラス基板4と7とをその周辺部で
接合したのち、封止材8の一部が開口する液晶注入口か
ら液晶9を注入する。次いで、液晶注入口を封止樹脂1
1で塞ぎ液晶ディスプレイパネル1が完成する。
After dispersing the spacers 10 in this manner, the glass substrate 7 with the alignment film 6 facing down was stacked on the spacer 10, and the glass substrates 4 and 7 were bonded at their peripheral portions using a sealant 8. Thereafter, liquid crystal 9 is injected through a liquid crystal injection port through which a portion of sealing material 8 is opened. Next, seal the liquid crystal injection port with sealing resin 1.
1 to complete the liquid crystal display panel 1.

【0006】[0006]

【発明が解決しようとする課題】以上説明したように従
来のスペーサ挿入方法は、ガラス基板4と7との接合前
,ガラス基板4(またはガラス基板7)に、揮発性の散
布液12と共に散布する方法であった。従って、スペー
サ10を均一に分布させるには、散布液12とスペーサ
10の混合比,散布用ノズルとガラス基板4との間隔,
散布用ノズルから噴射した散布液12の広がり,散布時
間等が関係するため熟練者が必要となり、スペーサ10
を散布する配向膜3は汚れ易く、かつ、ごみが付着し易
いため、慎重な取扱いが必要となり生産性が損なわれる
と共に、揮発性のスペーサ散布液12によって室内空気
が汚染され、防災上の配慮が必要であるという問題点が
あった。
[Problems to be Solved by the Invention] As explained above, in the conventional spacer insertion method, the glass substrate 4 (or the glass substrate 7) is sprayed together with the volatile spray liquid 12 before the glass substrates 4 and 7 are bonded. This was the way to do it. Therefore, in order to uniformly distribute the spacers 10, the mixing ratio of the spray liquid 12 and the spacers 10, the distance between the spray nozzle and the glass substrate 4,
Since the spread of the spray liquid 12 sprayed from the spray nozzle, the spray time, etc. are related, a skilled person is required.
The alignment film 3 on which the spacer is sprayed gets dirty easily and dirt easily adheres to it, so careful handling is required, which impairs productivity.In addition, the volatile spacer spray liquid 12 contaminates the indoor air, making it difficult to consider disaster prevention. The problem was that it required

【0007】[0007]

【課題を解決するための手段】上記問題点を解決する本
発明方法はその実施例を示す図1によれば、液晶9に球
形スペーサ10を混合し、スペーサ10の移動可能な間
隙で対向する一対の透明基板4と7の外周部を熱可塑性
樹脂の封止材8で封止し、封止材8の一側に液晶注入口
13を設け、スペーサ10を液晶9と共に一対の透明基
板4と7の対向間隙に注入したのち、封止材8をその軟
化温度に加熱した状態で一対の透明基板4と7をその対
向方向に押圧し、その押圧状態で封止材8を冷却し、ス
ペーサ10を一対の透明基板4と7の内面で挟持せしめ
る。
[Means for Solving the Problems] According to an embodiment of the method of the present invention which solves the above-mentioned problems, as shown in FIG. The outer peripheries of the pair of transparent substrates 4 and 7 are sealed with a thermoplastic resin sealant 8, a liquid crystal injection port 13 is provided on one side of the sealant 8, and a spacer 10 is inserted together with the liquid crystal 9 into the pair of transparent substrates 4. and 7, press the pair of transparent substrates 4 and 7 in opposite directions while heating the sealant 8 to its softening temperature, and cool the sealant 8 in the pressed state. A spacer 10 is sandwiched between the inner surfaces of a pair of transparent substrates 4 and 7.

【0008】[0008]

【作用】本発明方法によれば、一対の基板を接合したの
ち液晶と共にスペーサを挿入するため、熟練者に頼るこ
となくスペーサの均一分布が容易となり、パネル内の汚
染およびごみの封じ込めが著しく減少し工程が短縮され
ると共に、散布液を使用しないため室内がクリーン化さ
れ防災対策を不要にする。
[Operation] According to the method of the present invention, since the spacers are inserted together with the liquid crystal after bonding a pair of substrates, it is easy to uniformly distribute the spacers without relying on skilled workers, and the containment of contamination and dust inside the panel is significantly reduced. Not only does this shorten the process, but since no spraying liquid is used, the interior becomes cleaner, eliminating the need for disaster prevention measures.

【0009】[0009]

【実施例】図1は本発明の第1の実施例の説明図であり
、液晶9とプラスチックの球形スペーサ10は、液晶2
0〜2000部に対しスペーサ1部程度の割合で図1(
イ) に示す如く混合する。ガラス基板4と7は図1(
ロ) に示す如く、液晶注入口13が開口する熱可塑性
エポキシ樹脂の封止材8で接合させる。ただし、液晶注
入間隙を決める封止材8の厚さTは、該間隙がスペーサ
10の直径Dよりやや大きくなるように、即ち該間隙内
でスペーサ10が移動可能となる寸法にする。次いで、
図1(ハ) に示す如く液晶注入口13より液晶9と共
にスペーサ10を注入したのち、封止材8をその軟化温
度に加熱して図1(ニ) に示す如く、ガラス基板4と
7をその対向方向に適当な押圧力Fで押圧し、スペーサ
10が配向膜3と6で挟まれた状態で封止材8を常温に
冷却する。次いで、液晶注入口13より溢れた液晶9を
取り除き液晶注入口13を封止樹脂11で封止すると、
図1(ホ) に示す如くスペーサ10を固定した液晶デ
ィスプレイパネル1が完成する。
[Embodiment] FIG. 1 is an explanatory diagram of a first embodiment of the present invention, in which a liquid crystal 9 and a plastic spherical spacer 10 are
Figure 1 (
b) Mix as shown in . Glass substrates 4 and 7 are shown in Figure 1 (
(b) As shown in (b), they are bonded using a thermoplastic epoxy resin sealant 8 through which the liquid crystal injection port 13 is opened. However, the thickness T of the sealing material 8 that determines the liquid crystal injection gap is set so that the gap is slightly larger than the diameter D of the spacer 10, that is, the thickness T allows the spacer 10 to move within the gap. Then,
After injecting the spacer 10 along with the liquid crystal 9 through the liquid crystal injection port 13 as shown in FIG. 1(c), the sealing material 8 is heated to its softening temperature and the glass substrates 4 and 7 are bonded together as shown in FIG. 1(d). The encapsulant 8 is pressed in the opposite direction with an appropriate pressing force F, and the sealing material 8 is cooled to room temperature while the spacer 10 is sandwiched between the alignment films 3 and 6. Next, the liquid crystal 9 overflowing from the liquid crystal injection port 13 is removed and the liquid crystal injection port 13 is sealed with a sealing resin 11.
As shown in FIG. 1(e), a liquid crystal display panel 1 with spacers 10 fixed thereon is completed.

【0010】なお、本実施例では封止材8に熱可塑性エ
ポキシ樹脂を使用したが、熱可塑性エポキシ樹脂に替え
て熱硬化性樹脂または光硬化性樹脂を使用できる。そし
て、熱または光硬化性樹脂を使用したときは、その半硬
化状態で液晶9と共にスペーサ10を注入し、ガラス基
板4と7を押圧力Fで押圧した状態で完全硬化せしめ、
液晶注入口13を封止することになる。
Although a thermoplastic epoxy resin is used for the sealing material 8 in this embodiment, a thermosetting resin or a photocuring resin can be used instead of the thermoplastic epoxy resin. When a heat or photo-curable resin is used, the spacer 10 is injected together with the liquid crystal 9 in its semi-cured state, and the glass substrates 4 and 7 are completely cured while being pressed with a pressing force F.
The liquid crystal injection port 13 will be sealed.

【0011】図2は本発明の第2の実施例の説明図であ
り、球形スペーサ10を適当な割合で混合した液晶9と
、スペーサ10が移動可能に挿入されるように封止材8
でガラス基板4と7を接合した液晶充填前パネル20を
、図2(イ) に示す如く真空ベルジャー21に収容す
る。そして、吸気口23を閉じ排気口22よりベルジャ
ー21内の空気24を排気し、ベルジャー21内を適当
な真空度にしたのち、液晶注入口13が液晶9に浸漬さ
れる如く、図中に一点鎖線で示すパネル20を図中に実
線で示す如く下降させる。次いで、排気口22を閉じ吸
気口23を開けてベルジャー21に空気 (または窒素
ガス等) 25を送り込み、ベルジャー21内を大気圧
より適当な低圧例えば0.8気圧にすると、液晶9と共
にスペーサ10はパネル20に送入される。そこで、パ
ネル20を一点鎖線で示す位置まで引上げ液晶注入口1
3を気密封止したのち、ベルジャー21内を大気圧にす
ると、図2(ロ) に示す如く大気圧と液晶注入圧との
圧力差によってガラス基板4と7とが変形し、配向膜3
と6の間にスペーサ10を固定するようになる。
FIG. 2 is an explanatory diagram of a second embodiment of the present invention, in which liquid crystal 9 is mixed with spherical spacers 10 in an appropriate ratio, and a sealing material 8 is used so that the spacers 10 are movably inserted.
The panel 20 before liquid crystal filling, with the glass substrates 4 and 7 bonded together, is housed in a vacuum bell jar 21 as shown in FIG. 2(A). Then, after closing the intake port 23 and exhausting the air 24 inside the bell jar 21 through the exhaust port 22 to create an appropriate degree of vacuum inside the bell jar 21, the liquid crystal inlet 13 is immersed in the liquid crystal 9 at a point in the figure. The panel 20 shown by the chain line is lowered as shown by the solid line in the figure. Next, the exhaust port 22 is closed, the intake port 23 is opened, and air (or nitrogen gas, etc.) 25 is fed into the bell jar 21 to bring the inside of the bell jar 21 to an appropriate lower pressure than atmospheric pressure, for example, 0.8 atm. is sent to panel 20. Therefore, the panel 20 is pulled up to the position shown by the dashed line, and the liquid crystal injection port 1 is
3 is hermetically sealed, and when the inside of the bell jar 21 is brought to atmospheric pressure, the glass substrates 4 and 7 are deformed due to the pressure difference between the atmospheric pressure and the liquid crystal injection pressure, as shown in FIG.
A spacer 10 is fixed between and 6.

【0012】0012

【発明の効果】本発明方法によれば、一対の基板を接合
したのち液晶と共にスペーサを挿入するため、散布液を
使用した従来方法に比べパネル内の汚染およびごみの封
じ込めが著しく減少し表示品位が向上すると共に、工程
が短縮され製造コストが低減する、散布液を使用しない
ため室内がクリーン化され防災対策が不要になるという
効果を得た。
[Effects of the Invention] According to the method of the present invention, since the spacer is inserted together with the liquid crystal after bonding a pair of substrates, contamination and dust containment inside the panel is significantly reduced compared to the conventional method using a spray liquid, and the display quality is improved. This has the effect of improving safety, shortening the process and reducing manufacturing costs, and eliminating the need for disaster prevention measures as the interior of the room is kept cleaner because no spray liquid is used.

【図面の簡単な説明】[Brief explanation of the drawing]

【図1】  本発明の第1の実施例の説明図である。FIG. 1 is an explanatory diagram of a first embodiment of the present invention.

【図2】  本発明の第2の実施例の説明図である。FIG. 2 is an explanatory diagram of a second embodiment of the present invention.

【図3】  液晶ディスプレイパネルの主要構成を示す
断面図である。
FIG. 3 is a sectional view showing the main structure of a liquid crystal display panel.

【図4】  液晶ディスプレイパネルにおける従来のス
ペーサ挿入方法の説明図である。
FIG. 4 is an explanatory diagram of a conventional spacer insertion method in a liquid crystal display panel.

【符号の説明】 1は液晶ディスプレイパネル 4,7はガラス基板(透明基板) 8は封止材 9は液晶 10は球形スペーサ 13は液晶注入口 21は真空ベルジャー[Explanation of symbols] 1 is a liquid crystal display panel 4 and 7 are glass substrates (transparent substrates) 8 is sealing material 9 is liquid crystal 10 is a spherical spacer 13 is the liquid crystal injection port 21 is a vacuum bell jar

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】  液晶(9) に球形スペーサ(10)
を混合し、該スペーサ(10)の移動可能な間隙で対向
する一対の透明基板(4,7) の外周部を封止材(8
) で封止し、該封止材(8) の一側に液晶注入口(
13)を設け、該スペーサ(10)を該液晶(9) と
共に該一対の透明基板(4,7) の対向間隙に注入し
たのち、該一対の透明基板(4,7)をその対向方向に
押圧し該スペーサ(10)を該一対の透明基板(4,7
) の内面で挟持させることを特徴とする液晶ディスプ
レイパネルの製造方法。
[Claim 1] Spherical spacer (10) on liquid crystal (9)
A sealing material (8) is applied to the outer periphery of a pair of transparent substrates (4, 7) facing each other in the movable gap of the spacer (10).
), and a liquid crystal injection port (
13), and after injecting the spacer (10) together with the liquid crystal (9) into the opposing gap between the pair of transparent substrates (4, 7), the pair of transparent substrates (4, 7) are placed in the opposing direction. Press the spacer (10) onto the pair of transparent substrates (4, 7).
) A method for manufacturing a liquid crystal display panel, characterized by sandwiching the panel between the inner surfaces of the panel.
【請求項2】  前記封止材(8) が熱可塑性樹脂で
あり、前記液晶注入後に該封止材(8) を加熱し、前
記一対の透明基板(4,7) をその対向方向に押圧し
て該封止材(8) を押圧した状態で常温に冷却し、前
記スペーサ(10)を固定させることを特徴とする前記
請求項1記載の液晶ディスプレイパネルの製造方法。
2. The sealing material (8) is a thermoplastic resin, and after the liquid crystal is injected, the sealing material (8) is heated and the pair of transparent substrates (4, 7) are pressed in opposing directions. 2. The method of manufacturing a liquid crystal display panel according to claim 1, wherein the sealing material (8) is cooled to room temperature in a pressed state to fix the spacer (10).
【請求項3】  前記液晶(9) の注入が真空ベルジ
ャー(21)内で大気圧より低圧の減圧注入であり、前
記スペーサ(10)の固定が大気圧による前記透明基板
(4,7) の変形であることを特徴とする前記請求項
1記載の液晶ディスプレイパネルの製造方法。
3. The liquid crystal (9) is injected in a vacuum bell jar (21) under a reduced pressure lower than atmospheric pressure, and the spacer (10) is fixed by atmospheric pressure in the transparent substrate (4, 7). The method of manufacturing a liquid crystal display panel according to claim 1, wherein the method is a modification.
JP3703991A 1991-03-04 1991-03-04 Production of liquid crystal display panel Withdrawn JPH04275527A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3703991A JPH04275527A (en) 1991-03-04 1991-03-04 Production of liquid crystal display panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3703991A JPH04275527A (en) 1991-03-04 1991-03-04 Production of liquid crystal display panel

Publications (1)

Publication Number Publication Date
JPH04275527A true JPH04275527A (en) 1992-10-01

Family

ID=12486471

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3703991A Withdrawn JPH04275527A (en) 1991-03-04 1991-03-04 Production of liquid crystal display panel

Country Status (1)

Country Link
JP (1) JPH04275527A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6054000A (en) * 1994-03-25 2000-04-25 Ngk Insulators, Ltd. Pressure plate and process for production of liquid crystal panel using said pressure plate
GB2415263A (en) * 2004-06-16 2005-12-21 Lg Philips Lcd Co Ltd Method for manufacturing liquid crystal display device
CN107450237A (en) * 2017-08-16 2017-12-08 京东方科技集团股份有限公司 A kind of display base plate and preparation method thereof, display device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6054000A (en) * 1994-03-25 2000-04-25 Ngk Insulators, Ltd. Pressure plate and process for production of liquid crystal panel using said pressure plate
GB2415263A (en) * 2004-06-16 2005-12-21 Lg Philips Lcd Co Ltd Method for manufacturing liquid crystal display device
GB2415263B (en) * 2004-06-16 2006-11-08 Lg Philips Lcd Co Ltd Method for manufacturing liquid crystal display device
CN100416360C (en) * 2004-06-16 2008-09-03 乐金显示有限公司 Method for manufacturing liquid crystal display device
CN107450237A (en) * 2017-08-16 2017-12-08 京东方科技集团股份有限公司 A kind of display base plate and preparation method thereof, display device
CN107450237B (en) * 2017-08-16 2020-11-17 京东方科技集团股份有限公司 Display substrate, preparation method thereof and display device

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