JPH02257117A - Production of liquid crystal display panel - Google Patents
Production of liquid crystal display panelInfo
- Publication number
- JPH02257117A JPH02257117A JP7901389A JP7901389A JPH02257117A JP H02257117 A JPH02257117 A JP H02257117A JP 7901389 A JP7901389 A JP 7901389A JP 7901389 A JP7901389 A JP 7901389A JP H02257117 A JPH02257117 A JP H02257117A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- adhesive sheet
- display panel
- substrates
- 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
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000000853 adhesive Substances 0.000 claims abstract description 37
- 230000001070 adhesive effect Effects 0.000 claims abstract description 37
- 239000000758 substrate Substances 0.000 claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 239000011521 glass Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 10
- 239000004033 plastic Substances 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 8
- 238000007789 sealing Methods 0.000 abstract description 7
- 229920006332 epoxy adhesive Polymers 0.000 description 6
- 239000000565 sealant Substances 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000006071 cream Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、液晶表示パネルにおいて、液晶を２枚の基板
間に封入する為のシール部を形成する方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for forming a seal portion for sealing liquid crystal between two substrates in a liquid crystal display panel.
［従来の技術］
第２図は（ａ）〜（ｅ）は、従来の液晶表示パネルの製
法について示すものである。第２図中２１はガラス基板
、２２はマクリーンマスク、２３は接着剤原料、２４は
スキージ、２６はスクリーン印刷後の接着剤すなわちシ
ール部、２５は液晶を示す。さらに第２図（ａ）はガラ
ス基板とスクリーンマスク２２に接着剤原料２３を置い
た様子を示す。また第２図（ｂ）はスクリーンマスクを
ガラス基板に近接させ、スキージにて接着剤をこすりな
がら移動することによって接着剤を印刷している様子、
第２図（Ｃ）はガラス基板上のシール部に接着剤が印刷
された様子、第２図（ｄ）はもう−枚のガラス基板を押
しつけた様子、第２図（ｅ）はこれをそのまま加熱、硬
化させて、２枚のガラス基板″のシール部を接合された
様子を示す。この後、該密閉された２枚のガラス基板の
間に液晶が注入される。[Prior Art] FIGS. 2(a) to 2(e) show a conventional method for manufacturing a liquid crystal display panel. In FIG. 2, 21 is a glass substrate, 22 is a MacLean mask, 23 is an adhesive raw material, 24 is a squeegee, 26 is an adhesive after screen printing, that is, a sealing part, and 25 is a liquid crystal. Furthermore, FIG. 2(a) shows a state in which an adhesive raw material 23 is placed on a glass substrate and a screen mask 22. In addition, Fig. 2(b) shows how the adhesive is printed by placing the screen mask close to the glass substrate and moving it while rubbing the adhesive with a squeegee.
Figure 2 (C) shows the adhesive printed on the seal on the glass substrate, Figure 2 (d) shows the glass substrate pressed against it, and Figure 2 (e) shows this as it is. The seal portions of the two glass substrates are bonded together by heating and curing. After this, liquid crystal is injected between the two sealed glass substrates.
［発明が解決しようとする課題］
従来の液晶表示パネルにおいては、例えばエポキシ系の
接着剤をクリーム状の状態において網目上のスクリーン
マスクを用いてガラス基板上にスクリーン印刷していた
。このような従来の液晶表示パネルにおいては以下に示
す様な各種問題点を有するものであった。[Problems to be Solved by the Invention] In conventional liquid crystal display panels, for example, an epoxy adhesive in a cream state is screen printed on a glass substrate using a mesh screen mask. Such conventional liquid crystal display panels have had various problems as shown below.
まず、従来の液晶表示パネルでは、クリーム状のエポキ
シ系接着剤は加熱によっても硬化するが、空気中に常温
で放置するだけでも硬化は進行する。その為、接着剤の
ポットライフが短く、作業性が悪いばかりでなく、接着
作業後の接合品質もばらつきが大きくなるものである。First, in conventional liquid crystal display panels, the cream-like epoxy adhesive hardens even when heated, but it also hardens even if it is left in the air at room temperature. Therefore, the pot life of the adhesive is short, and workability is not only poor, but also the bonding quality after the bonding operation is highly variable.
また、従来の液晶表示パネルでは、クリーム状のエポキ
シ系接着剤を網目上のスクリーンマスクにて印刷する為
、網目のスクリーンマスクの目の中に接着剤のカスがつ
まりやすくなる。この目づまりした接着剤のカスはとれ
やすく、液晶表示パネルの中のゴミとなる。この液晶表
示パネル内のゴミは液晶表示パネルの表示品質を低下さ
せる原因となる。Furthermore, in conventional liquid crystal display panels, cream-like epoxy adhesive is printed on a screen mask on a mesh, so adhesive residue tends to get stuck in the mesh screen mask. This clogged adhesive residue is easy to remove and becomes dust inside the liquid crystal display panel. This dust in the liquid crystal display panel causes deterioration in the display quality of the liquid crystal display panel.
さらに、従来の液晶表示パネルでは、クリーム状のエポ
キシ系接着剤を網目上のスクリーンマスクにて印刷する
為、コーナ一部の印刷がかすれやすくなり、印刷保留が
低下しやすいものであった。また、コーナ一部の印刷の
かすれをなくする為にはコーナ一部にアールをつける必
要があり、コーナ一部に大きなアールをつけるとデッド
スペースが大きくなるものであった。Furthermore, in conventional liquid crystal display panels, since cream-like epoxy adhesive is printed using a screen mask on a mesh, printing tends to fade in some corners and print retention tends to decrease. In addition, in order to eliminate blurred printing in some corners, it is necessary to round some corners, and if a large radius is formed in some corners, dead space becomes large.
さらに、従来の液晶表示パネルにおいては、クリーム状
のエポキシ系接着剤を網目上のスクリーンマスクにて印
刷する為、微視的には印刷の線はまっすぐにならない。Furthermore, in conventional liquid crystal display panels, since cream-like epoxy adhesive is printed using a screen mask on a mesh, the printed lines are not microscopically straight.
液晶の駆動は多分に力学的面があり、液晶分子に接する
界面の状態は極めて液晶の駆動品質に影響があり、シー
ル部となるエポキシ系接着剤の印刷線が乱れると液晶の
駆動品質が低下する。Driving a liquid crystal is largely mechanical, and the state of the interface in contact with liquid crystal molecules has a significant impact on the driving quality of the liquid crystal.If the printed line of the epoxy adhesive that serves as the seal is disturbed, the driving quality of the liquid crystal deteriorates. do.
以上述べた如〈従来の液晶表示パネルは種々問題点を有
するものである。本発明はかかる問題点を解決するもの
であり、その目的とするところは、液晶表示パネルの作
業性を向上し、作業中の発塵を低下させ、コーナ一部と
シールの線をシャフにすることを可能にした液晶表示パ
ネルの製造方法を提供することにある。As mentioned above, conventional liquid crystal display panels have various problems. The present invention is intended to solve these problems, and its purpose is to improve the workability of liquid crystal display panels, reduce dust generation during work, and make some corners and seal lines shaky. An object of the present invention is to provide a method for manufacturing a liquid crystal display panel that makes it possible to do this.
［課題を解決する為の手段］
本発明の液晶表示パネルの製造方法は、上下２枚のガラ
スあるいはプラスチック等の基板にて液晶を挟持してな
る液晶表示パネルの製造方法において、フィルム状に伸
延した接着剤シートを所定形状に外形抜きし、しかる後
、上記接着剤シートを上記２枚の基板の間に挟持し、さ
らにその後、加熱、加圧、光照射等、あるいはそれらの
いずれかの硬化手段を用いて上記接着剤シートを硬化せ
しめて上記２枚の基板を接合して、シール部を形成する
事を特徴とする。[Means for Solving the Problems] The method for manufacturing a liquid crystal display panel of the present invention is a method for manufacturing a liquid crystal display panel in which a liquid crystal is sandwiched between two upper and lower glass or plastic substrates, and the method includes stretching the liquid crystal display panel into a film shape. The adhesive sheet is cut into a predetermined shape, and then the adhesive sheet is sandwiched between the two substrates, and then cured by heating, pressurization, light irradiation, etc., or any of these methods. The method is characterized in that the adhesive sheet is cured using a means to join the two substrates to form a seal portion.
第１図（ａ）〜（ｅ）は、実施例により液晶表示パネル
の製造方法について示すものである。第１図中１．２は
ガラス基板、３はフィルミ状に伸延した接着剤シート、
４は接着剤シートの離形紙、５はガラス基板に貼り付は
後の接着剤シートすなわちシール部、６は液晶を示す。FIGS. 1(a) to 1(e) show a method for manufacturing a liquid crystal display panel according to an example. In Figure 1, 1.2 is a glass substrate, 3 is an adhesive sheet stretched into a film shape,
Reference numeral 4 indicates the release paper of the adhesive sheet, 5 indicates the adhesive sheet to be attached to the glass substrate, that is, the sealing portion, and 6 indicates the liquid crystal.
第１図（ａ）はガラス基板と離形紙付のフィルム状に伸
延した接着剤シートを示す。接着剤シートはフィルム状
である為、ビク型のような極めて簡略な型で外形抜きを
する事ができ、離形紙は外形抜きせずに、フィルム状の
接着剤シートのみを精度良く抜く事ができる。FIG. 1(a) shows an adhesive sheet stretched into a film with a glass substrate and a release paper attached. Since the adhesive sheet is in the form of a film, it is possible to cut out the outline using a very simple die such as a Bikku die, and the release paper can be used to accurately cut out only the film-like adhesive sheet without cutting out the outline. I can do it.
第１図（ｂ）は、外形抜きの済んだ接着剤シートな離形
紙付のまま貼り付けた様子を示すものであり、第１図（
Ｃ）は、接着剤シートの離形紙のみを剥離した状態、第
１図（ｄ）はもう−枚のガラス基板を合わせて、加熱ツ
ールにて加熱、加圧して接着剤シートを硬化させシール
部としている所、第１図（ｅ）はシール部が硬化し２枚
のガラス基板が接合された後、液晶６が注入させたもの
を示す。Figure 1(b) shows the adhesive sheet with its outline cut out and attached with release paper attached.
C) shows the state in which only the release paper of the adhesive sheet has been peeled off, and Fig. 1 (d) shows the state in which the two glass substrates are placed together and heated and pressurized with a heating tool to harden the adhesive sheet and seal it. FIG. 1(e) shows the liquid crystal 6 injected after the seal portion has hardened and the two glass substrates have been bonded.
第１図より明らかなように、本実施例による液晶表示パ
ネルは、エポキシとゴム系の接着剤をブレンドした接着
剤シートをシール剤として使用しており、基本的には加
熱、加圧によって硬化接合するが、一般には冷蔵保管で
あれば約６ケ月以上品質上の問題がないばかりでなく、
数日から敗退の間に亙って室温で放置されても硬化品質
は劣化しない。さらには外形抜きされた接着剤シートを
そのままシース剤として貼り付ける為、微細なカスも発
生しない為、液晶表示パネルの中にまぎれ込むゴミもな
い。従って、ゴミを原因とした液晶表示品質の低下もな
いし、歩留りの低下もない。As is clear from Fig. 1, the liquid crystal display panel according to this example uses an adhesive sheet made of a blend of epoxy and rubber adhesive as a sealant, and is basically cured by heating and pressure. However, in general, if kept refrigerated, not only will there be no quality problems for about 6 months or more, but
The curing quality does not deteriorate even if it is left at room temperature for a period of several days to failure. Furthermore, since the adhesive sheet with its outline cut out is applied directly as a sheathing agent, no minute debris is generated, so there is no dust that gets mixed into the liquid crystal display panel. Therefore, there is no deterioration in liquid crystal display quality due to dust, and there is no deterioration in yield.
また、本実施例による液晶表示パネルでは、きれいに外
形抜きされた接着剤シートをシール剤として、ガラス基
板に貼り付ければ良い為、シール部のコーナーがかすれ
る事もなく、シール部形成の歩留りを向上させる事もで
きるし、デッドスペースも低減させる事ができる。In addition, in the liquid crystal display panel according to this example, since the adhesive sheet with a neatly cut out outline can be used as a sealant and pasted on the glass substrate, the corners of the seal part will not be scratched, improving the yield of forming the seal part. It is also possible to reduce the dead space.
さらに、本実施例による液晶表示パネルでは、きれいに
外形抜きされた接着剤シートをシール剤として、そのま
まガラス基板に貼り付ければシル部が形成できる為、微
視的に見てもシール部の外形の線はまっすぐにする事が
可能であり、シール剤と液晶分子の界面の乱れによる液
晶の駆動品質の低下を防ぐ事ができるものである。Furthermore, in the liquid crystal display panel according to this embodiment, a sill part can be formed by using a neatly cut out adhesive sheet as a sealant and pasting it as is on a glass substrate. The line can be made straight, and it is possible to prevent the quality of driving the liquid crystal from deteriorating due to disturbance at the interface between the sealant and the liquid crystal molecules.
方、本実施例によるフィルム状に伸延した接着剤シート
に、あらかじめ、同一径の非導電性粒子を混練させてお
けば、加熱、加圧による圧着によっても２枚の基板の間
のスキマは精度良く保つ事ができる。On the other hand, if non-conductive particles of the same diameter are kneaded in advance into the adhesive sheet stretched into a film according to this embodiment, the gap between the two substrates can be maintained even when bonded by heating and pressure. It can be kept well.
さらに、本実施例によるフィルム状に伸延した接着シー
トは種々の材質のものが考えられ、上記の実施例で説明
した様な加熱、加圧によって硬化、接合するものばかり
でなく、光硬化タイプのものあるいはその他の硬化形態
のものなど種々考えられる。Furthermore, the adhesive sheet stretched into a film shape according to this example can be made of various materials, and it is not only a type that is cured and bonded by heating and pressure as explained in the above example, but also a photo-curable type. A variety of materials are possible, including hardened solids and other hardened forms.
［発明の効果］
以上説明した如く、本発明による液晶表示パネルは、シ
ール部形成の作業性を向上させ、作業中の発塵をなくし
て液晶表示品質を向上させ、シルのコーナ一部と外形線
をまっすぐにする効果を有する。[Effects of the Invention] As explained above, the liquid crystal display panel according to the present invention improves the workability of forming the seal part, eliminates dust generation during the work, improves the quality of the liquid crystal display, and improves the quality of the liquid crystal display by eliminating part of the corner of the sill and the outer shape. It has the effect of straightening lines.
１．２．２１・・ガラス基板
３・・・・・・・接着剤シート
４・・・・・・・離形紙
５・・・・・・・ガラス基板に貼り付は後の接着剤シー
トすなわちシ
ル部
６ ・ ・ ゛ ン佼日
日７・・・・・・・加熱、加圧ツール
８・・ ・・・・加圧ステージ
２２・・・・・・・スクリーンマスク
２３・・・・・・・クリーム状接着剤原料２４・・・・
・・・スキージ
２５・・・・・・ 液晶1.2.21...Glass substrate 3...Adhesive sheet 4...Release paper 5...Adhesive sheet to be attached to the glass substrate later That is, the sill part 6......Heating and pressure tool 8......Pressure stage 22...Screen mask 23... ...Cream adhesive raw material 24...
... Squeegee 25 ... Liquid crystal
Claims (1)
晶を挟持してなる液晶表示パネルの製造方法において、
フィルム状に伸延した接着剤シートを所定形状に外形抜
きし、しかる後、上記接着剤シートを上記２枚の基板の
間に挟持し、さらにその後、加熱、加圧、光照射等、あ
るいはそれらのいずれかの硬化手段を用いて上記接着剤
シートを硬化せしめて上記２枚の基板を接合して、シー
ル部を形成する事を特徴とする液晶表示パネルの製造方
法。In a method for manufacturing a liquid crystal display panel in which a liquid crystal is sandwiched between two upper and lower glass or plastic substrates,
The adhesive sheet stretched in the form of a film is cut into a predetermined shape, and then the adhesive sheet is sandwiched between the two substrates, and then subjected to heating, pressure, light irradiation, etc. A method for manufacturing a liquid crystal display panel, comprising curing the adhesive sheet using any of the curing means and joining the two substrates to form a seal portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7901389A JPH02257117A (en) | 1989-03-30 | 1989-03-30 | Production of liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7901389A JPH02257117A (en) | 1989-03-30 | 1989-03-30 | Production of liquid crystal display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02257117A true JPH02257117A (en) | 1990-10-17 |
Family
ID=13678064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7901389A Pending JPH02257117A (en) | 1989-03-30 | 1989-03-30 | Production of liquid crystal display panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02257117A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101016682B1 (en) * | 2002-10-15 | 2011-02-25 | 제옥스 에스. 뻬.아. | Waterproofed and breathable sole for shoes and manufacturing method thereof |
-
1989
- 1989-03-30 JP JP7901389A patent/JPH02257117A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101016682B1 (en) * | 2002-10-15 | 2011-02-25 | 제옥스 에스. 뻬.아. | Waterproofed and breathable sole for shoes and manufacturing method thereof |
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