JPH06130403A - Manufacture of liquid crystal display element - Google Patents
Manufacture of liquid crystal display elementInfo
- Publication number
- JPH06130403A JPH06130403A JP27706192A JP27706192A JPH06130403A JP H06130403 A JPH06130403 A JP H06130403A JP 27706192 A JP27706192 A JP 27706192A JP 27706192 A JP27706192 A JP 27706192A JP H06130403 A JPH06130403 A JP H06130403A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- transparent substrates
- gap
- filling
- crystal display
- 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 44
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000000758 substrate Substances 0.000 claims abstract description 50
- 239000003566 sealing material Substances 0.000 claims abstract description 13
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 9
- 239000000057 synthetic resin Substances 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 230000002950 deficient Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、二枚の透明基板を、そ
の間に液晶を封入した状態で重ね合わせて成る液晶表示
素子を、低コストで製造する方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a liquid crystal display device at low cost, which is formed by stacking two transparent substrates with liquid crystal enclosed therebetween.
【０００２】[0002]
【従来の技術】一般に、この種の液晶表示素子１′は、
図４に示すように、重ね合わせた二枚の透明基板２′，
３′の間における周囲にシール材４′を介挿し、このシ
ール材４′よりも内側における隙間内に、液晶を、前記
シール材４′の途中に設けた注入口５′より充填したの
ち、前記注入口５′を、紫外線硬化樹脂等の合成樹脂
６′にて塞ぐように構成にしていることは周知の通りで
ある。2. Description of the Related Art Generally, this type of liquid crystal display device 1'is
As shown in FIG. 4, the two transparent substrates 2 ',
A sealing material 4'is inserted around the space between 3 ', and liquid crystal is filled in a gap inside the sealing material 4'through an injection port 5'provided in the middle of the sealing material 4'. It is well known that the injection port 5'is configured to be closed with a synthetic resin 6'such as an ultraviolet curable resin.
【０００３】そして、前記液晶表示素子１′における両
透明基板２′，３′の間の隙間内に液晶を充填するに際
して、従来は、例えば、特開平３−２９６７２４号公報
に記載され、且つ、図５に示すように、この液晶表示素
子１′を、密閉容器Ａ内に、注入口６′を下向きにした
状態で入れて、前記密閉容器Ａ内を真空にし、この真空
にした状態で、前記注入口６′を、予め密閉容器Ａ内に
装填した上面開放型の液晶容器Ｂ内における液晶Ｃに浸
漬したのち、前記密閉容器Ａ内を大気に開放することに
より、前記液晶容器Ｂ内における液晶Ｃを、両透明基板
２′，３′間の隙間内に、真空による圧力差とによって
吸い込ませると言ういわゆる真空充填法を採用してい
る。In filling the liquid crystal in the space between the transparent substrates 2'and 3'in the liquid crystal display element 1 ', a conventional method is described in, for example, Japanese Patent Laid-Open No. 3-296724, and As shown in FIG. 5, the liquid crystal display element 1'is put in the closed container A with the inlet 6'downward, and the closed container A is evacuated. In the liquid crystal container B, the injection port 6 ′ is immersed in the liquid crystal C in the liquid crystal container B of the open top type which is previously loaded in the closed container A, and then the air in the closed container A is opened to the atmosphere. A so-called vacuum filling method is adopted in which the liquid crystal C is sucked into the gap between the transparent substrates 2'and 3'by a pressure difference due to vacuum.
【０００４】[0004]
【発明が解決しようとする課題】しかし、この真空充填
法において、両透明基板２′，３′間の隙間内における
真空度は、当該隙間内への液晶の吸い込みにつれて次第
に大気圧に近付くように急速に低下するものであること
により、前記隙間内への液晶の単位時間当たりの充填速
度は、最初の単位時間内に線Ｄ1 ′まで充填されたもの
が、次の単位時間では線Ｄ2 ′まで充填され、次いで、
各単位時間ごとに線Ｄ3 ′，Ｄ4 ′，Ｄ5′，Ｄ6 ′，
Ｄ7 ′の順序で充填されると言うように、隙間内におけ
る真空度の低下につれて急激に遅くなるから、前記隙間
のうち当該隙間に対する注入口６′から遠い箇所におけ
るコーナ部にまで液晶を完全に充填するまでには、可成
り長い時間が掛かることになる。However, in this vacuum filling method, the degree of vacuum in the gap between the transparent substrates 2'and 3'approaches atmospheric pressure as the liquid crystal is sucked into the gap. Due to the rapid decrease, the filling rate of the liquid crystal into the gap per unit time is the one filled up to the line D 1 ′ in the first unit time, but the line D 2 in the next unit time. 'Filled, then
For each unit time, the lines D 3 ′, D 4 ′, D 5 ′, D 6 ′,
As it is said that the filling is performed in the order of D 7 ′, as the degree of vacuum in the gap decreases rapidly, the liquid crystal is completely filled up to the corner portion of the gap far from the injection port 6 ′ with respect to the gap. It will take a considerably long time to fill the container.
【０００５】すなわち、液晶を両透明基板２′，３′間
の隙間内に対してコーナ部まで完全に充填するまでに
は、可成り長い時間を必要とするから、生産性が低く
て、コストが大幅にアップするのであり、しかも、前記
隙間のうち当該隙間に対する注入口６′から遠い箇所に
おけるコーナ部に、液晶を充填されないこと、つまり充
填不良が多発するから、歩留り率が低いと言う問題もあ
った。That is, it takes a considerably long time to completely fill the inside of the gap between the transparent substrates 2'and 3'to the corners, so that the productivity is low and the cost is low. In addition, since the liquid crystal is not filled in the corner portion of the gap that is far from the inlet 6'with respect to the gap, that is, defective filling frequently occurs, the yield rate is low. There was also.
【０００６】本発明は、これらの問題を解消できるよう
にした製造方法を提供することを技術的課題とするもの
である。[0006] The present invention has a technical object to provide a manufacturing method capable of solving these problems.
【０００７】[0007]
【課題を解決するための手段】この技術的課題を達成す
るため本発明は、周囲にシール材を挟んで重ね合わせた
二枚の透明基板に、当該両透明基板を前記シール材にお
ける注入口よりも遠い方向に延長した延長部を設けて、
両透明基板間の隙間をこの延長部まで拡張し、前記両透
明基板間の隙間に、液晶を、前記注入口から真空充填
し、次いで、前記両透明基板における延長部を切断にて
除去したのち、その切断面を、合成樹脂液の塗布にて塞
ぐことにした。In order to achieve this technical object, the present invention provides two transparent substrates which are superposed on each other with a sealing material sandwiched therebetween, and both transparent substrates are inserted from an injection port in the sealing material. Also, provide an extension part that extends far away,
The gap between both transparent substrates was expanded to this extension, liquid crystal was vacuum-filled into the gap between both transparent substrates from the injection port, and then the extension in both transparent substrates was removed by cutting. , The cut surface was closed by applying a synthetic resin solution.
【０００８】[0008]
【作 用】両透明基板間における隙間内に液晶を注入
口から真空充填法にて充填する場合に、単位時間当たり
の充填速度は、前記したように、注入口から遠ざかるに
つれて急速に遅くなるものである。そこで、前記のよう
に、両透明基板に、当該両透明基板を前記シール材にお
ける注入口よりも遠い方向に延長した延長部を設けて、
両透明基板間における隙間をこの延長部まで拡張するこ
とにより、前記両透明基板間における隙間への液晶の充
填速度は、前記延長部における隙間内では急速に遅くな
るものの、前記両透明基板のうち延長部を除く部分にお
ける隙間内に対しては早い速度に維持することができ、
換言すると、充填速度がさほど遅くなるまでの間、つま
り充填速度がまだ充分に早いうちに、前記両透明基板の
うち延長部を除く部分における隙間内に対する液晶の充
填を完了するすることができるから、両透明基板間の隙
間の全体に対する液晶の完全充填を、短い時間で達成で
きるのである。[Operation] When liquid crystal is filled in the gap between both transparent substrates from the injection port by the vacuum filling method, the filling speed per unit time rapidly decreases as it goes away from the injection port, as described above. Is. Therefore, as described above, both transparent substrates are provided with an extension portion obtained by extending the both transparent substrates in a direction farther than the injection port in the sealing material,
By expanding the gap between the two transparent substrates to this extension, the filling speed of the liquid crystal into the gap between the two transparent substrates is rapidly reduced in the gap in the extension, but It is possible to maintain a high speed for the inside of the gap except the extension part,
In other words, it is possible to complete the filling of the liquid crystal into the gaps in the portions of the transparent substrates excluding the extended portion until the filling speed becomes slow, that is, while the filling speed is still sufficiently high. The complete filling of the liquid crystal in the entire gap between the transparent substrates can be achieved in a short time.
【０００９】[0009]
【発明の効果】このように、本発明によると、液晶を両
透明基板間の隙間内に対してコーナ部まで完全に充填す
ることに要する時間を大幅に短縮できるから、この充填
後において、両透明基板における延長部を切断する工
程、及びこの切断面に合成樹脂液を塗布する工程を加え
ても、全体としての製造コストを、前記従来の場合より
も確実に低減できるのであり、しかも、コーナ部に、液
晶の充填不良が発生することを確実に低減できて、歩留
り率を著しく向上できる効果を有する。As described above, according to the present invention, the time required to completely fill the gap between the transparent substrates with the liquid crystal up to the corner portion can be significantly shortened. Even if the step of cutting the extended portion of the transparent substrate and the step of applying the synthetic resin liquid to the cut surface are added, the manufacturing cost as a whole can be surely reduced as compared with the conventional case, and moreover, the corner. It is possible to surely reduce the occurrence of defective filling of liquid crystal in the portion, and it is possible to significantly improve the yield rate.
【００１０】[0010]
【実施例】以下、本発明の実施例を図面について説明す
る。図１及び図２において符号２，３は、長さ寸法がＬ
で幅寸法がＷの液晶表示素子１を構成するガラス板等の
透明基板を示す。この両透明基板２，３における長さ寸
法Ｌ0 を、液晶表示素子１としての本来における所定長
さ寸法Ｌに、適宜寸法Ｌ1 の延長部２ａ，３ａを加えた
寸法にして、両透明基板２，３を、その間における周囲
にシール材４を挟んで重ね合わせる一方、前記シール材
４のうち前記延長部２ａ，３ａとは反対側の部位には、
両透明基板２，３間の隙間への液晶の注入口５を設け
る。Embodiments of the present invention will now be described with reference to the drawings. In FIGS. 1 and 2, reference numerals 2 and 3 indicate that the length dimension is L.
Shows a transparent substrate such as a glass plate constituting the liquid crystal display element 1 having a width W. The length dimension L 0 of both the transparent substrates 2 and 3 is set to a dimension obtained by adding the extension portions 2a and 3a of the dimension L 1 to the original predetermined length dimension L of the liquid crystal display element 1 as appropriate. 2 and 3 are overlapped with a sealing material 4 sandwiched between them, while a portion of the sealing material 4 opposite to the extension portions 2a and 3a is
A liquid crystal injection port 5 is provided in a gap between the transparent substrates 2 and 3.
【００１１】そして、前記両透明基板２，３間の隙間に
対する液晶の充填は、前記図５に示す従来と同様の真空
充填法によって、注入口５より行うのである。この充填
に際して、液晶の単位時間当たりの充填速度は、最初の
単位時間内では線Ｄ1 まで充填されたものが、次の単位
時間では線Ｄ2 まで充填され、次いで、各単位時間ごと
に線Ｄ3 ，Ｄ4 ，Ｄ5 ，Ｄ6 の順序で充填されると言う
ように、隙間内における真空度の低下につれて急激に遅
くなるものである。The liquid crystal is filled in the gap between the transparent substrates 2 and 3 from the inlet 5 by the same vacuum filling method as shown in FIG. In this filling, the filling speed of the liquid crystal per unit time is such that the line D 1 is filled in the first unit time, the line D 2 is filled in the next unit time, and then the line is filled every unit time. It is said that the filling is performed in the order of D 3 , D 4 , D 5 , and D 6 , so that it is abruptly delayed as the degree of vacuum in the gap decreases.
【００１２】そこで、両透明基板２，３に、当該両透明
基板２，３を前記シール材４における注入口５よりも遠
い方向に延長した延長部２ａ，３ａを設けて、両透明基
板２，３間における隙間をこの延長部２ａ，３ａまで拡
張することにより、前記両透明基板２，３間における隙
間への液晶の充填速度は、前記延長部２ａ，３ａにおけ
る隙間内では急速に遅くなるだけで、前記両透明基板
２，３のうち延長部２ａ，３ａを除く部分、つまり、液
晶表示素子１としての本来における所定長さ寸法Ｌの部
分における隙間内に対しては早い充填速度を維持するこ
とができて、換言すると、充填速度がさほど遅くならず
まだ充分に早いうちに、前記両透明基板２，３の所定長
さ寸法Ｌにおける隙間内に対する液晶の充填を完了する
ことができるから、両透明基板２，３間の隙間の全体に
対する液晶の充填を、短い時間で達成できるのである。Therefore, the transparent substrates 2 and 3 are provided with extensions 2a and 3a, respectively, which are formed by extending the transparent substrates 2 and 3 in the direction farther than the injection port 5 in the sealing material 4, and the transparent substrates 2 and 3 are provided. By extending the gap between the extension portions 2a and 3a to the extension portions 2a and 3a, the filling speed of the liquid crystal into the gap between the transparent substrates 2 and 3 is rapidly decreased in the gap between the extension portions 2a and 3a. Thus, a high filling speed is maintained in the gap between the transparent substrates 2 and 3 excluding the extended portions 2a and 3a, that is, the portion of the liquid crystal display element 1 originally having the predetermined length dimension L. In other words, in other words, the filling of the liquid crystal into the gap in the predetermined length dimension L of both transparent substrates 2 and 3 can be completed before the filling speed is so slow and is sufficiently fast. The filling of the liquid crystal to the total of the gap between the transparent substrates 2 and 3, it can be achieved in a short time.
【００１３】前記両透明基板２，３の所定長さ寸法Ｌに
おける隙間内に対する液晶の充填を完了すると、注入口
５を、紫外線硬化樹脂等の合成樹脂液６を塗着して乾燥
・硬化することによって塞いだのち、両透明基板２，３
を、所定長さ寸法Ｌの部分における切断線７に沿って、
回転式のカッター８にて切断することにより、図２に示
すように、延長部２ａ，３ａを切除し、次いで、その切
断面に、紫外線硬化樹脂等の合成樹脂液９を塗着したの
ち、乾燥・硬化することによって密封するのである。When the filling of the liquid crystal into the gap in the predetermined length dimension L of the transparent substrates 2 and 3 is completed, the injection port 5 is coated with a synthetic resin liquid 6 such as an ultraviolet curing resin and dried / cured. After it is blocked by the two transparent substrates 2, 3
Along the cutting line 7 in the portion of the predetermined length dimension L,
By cutting with a rotary cutter 8, as shown in FIG. 2, the extension portions 2a and 3a are cut off, and then the cut surface is coated with a synthetic resin liquid 9 such as an ultraviolet curable resin. It is sealed by drying and curing.
【００１４】図３は、別の実施例を示す。この実施例
は、前記両透明基板２，３間のうち、延長部２ａ，３ａ
に対する切断線７の部分に、シール材４ａを設けて、こ
のシール材４ａの両端に、両透明基板２，３間における
隙間と、両透明基板２，３の延長部２ａ，３ａにおける
隙間との連通部４ａ′，４ａ″を形成するように構成し
たものである。FIG. 3 shows another embodiment. In this embodiment, the extension parts 2a and 3a of the two transparent substrates 2 and 3 are
The seal material 4a is provided at the portion of the cutting line 7 for the gap between the transparent substrates 2 and 3 and the gaps between the extended portions 2a and 3a of the transparent substrates 2 and 3 at both ends of the seal material 4a. The communication parts 4a 'and 4a "are formed.
【００１５】これによると、両透明基板２，３における
延長部２ａ，３ａを、切断線７に沿って切断除去するに
際して、隙間に充填した液晶が漏れることを少なくする
ことができると共に、その切断面に対して塗着する紫外
線硬化樹脂等の合成樹脂液８を少なく、且つ、その塗着
の作業を簡単化できるから、幅寸法Ｗの大きい液晶表示
素子１に対して有効に適用できるのである。According to this, when the extended portions 2a and 3a of both transparent substrates 2 and 3 are cut and removed along the cutting line 7, it is possible to reduce the leakage of the liquid crystal filled in the gap and to cut the liquid crystal. Since the amount of the synthetic resin liquid 8 such as the ultraviolet curable resin applied to the surface is small and the application work can be simplified, it can be effectively applied to the liquid crystal display element 1 having a large width W. .
【図１】本発明における実施例を示す斜視図である。FIG. 1 is a perspective view showing an embodiment of the present invention.
【図２】所定の長さに切断した状態の斜視図である。FIG. 2 is a perspective view showing a state of being cut into a predetermined length.
【図３】本発明における別の実施例を示す斜視図であ
る。FIG. 3 is a perspective view showing another embodiment of the present invention.
【図４】従来の例を示す斜視図である。FIG. 4 is a perspective view showing a conventional example.
【図５】液晶を充填している状態を示す図である。FIG. 5 is a diagram showing a state in which liquid crystal is filled.
１ 液晶表示素子 ２，３ 透明基板 ２ａ，３ａ 延長部 ４，４ａ シール材 ５ 注入口 ６，９ 合成樹脂液 ７ 切断線 1 Liquid crystal display element 2,3 Transparent substrate 2a, 3a Extension part 4,4a Sealing material 5 Injection port 6,9 Synthetic resin liquid 7 Cutting line
Claims (1)
の透明基板に、当該両透明基板を前記シール材における
注入口よりも遠い方向に延長した延長部を設けて、両透
明基板間の隙間をこの延長部まで拡張し、前記両透明基
板間の隙間に、液晶を、前記注入口から真空充填し、次
いで、前記両透明基板における延長部を切断にて除去し
たのち、その切断面を、合成樹脂液の塗布にて塞ぐこと
を特徴とする液晶表示素子の製造方法。Claim: What is claimed is: 1. Two transparent substrates, which are overlapped with each other with a sealing material sandwiched between them, are provided with an extension portion extending both transparent substrates in a direction farther than an injection port of the sealing material. The gap between the transparent substrates is expanded to this extension, liquid crystal is vacuum-filled in the gap between the transparent substrates from the injection port, and then the extensions of the transparent substrates are removed by cutting, and the cut surface is cut. A method for manufacturing a liquid crystal display element, characterized in that the above is closed by applying a synthetic resin liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27706192A JPH06130403A (en) | 1992-10-15 | 1992-10-15 | Manufacture of liquid crystal display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27706192A JPH06130403A (en) | 1992-10-15 | 1992-10-15 | Manufacture of liquid crystal display element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06130403A true JPH06130403A (en) | 1994-05-13 |
Family
ID=17578243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27706192A Pending JPH06130403A (en) | 1992-10-15 | 1992-10-15 | Manufacture of liquid crystal display element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06130403A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8068206B2 (en) | 1999-03-22 | 2011-11-29 | Tannas Jr Lawrence E | Customized electronic displays and methods of customizing the physical size and/or shape thereof |
| US8235761B2 (en) | 2004-09-02 | 2012-08-07 | Tannas Jr Lawrence E | Apparatus and methods for resizing electronic displays |
| US8259282B2 (en) | 2010-05-17 | 2012-09-04 | Tannas Jr Lawrence E | Method of repairing short or potential short circuits during resizing of an electronic flat panel display |
| US8804090B2 (en) | 2010-12-02 | 2014-08-12 | Lawrence E. Tannas, Jr. | Methods for creating a minimally visible seal along the edge of a flat panel display |
| US8864541B2 (en) | 2011-11-04 | 2014-10-21 | Lawrence E. Tannas, Jr. | Apparatus and methods for resealing resized electronic displays |
| US8885138B2 (en) | 2012-04-03 | 2014-11-11 | Lawrence E. Tannas, Jr. | Apparatus and methods for resizing electronic displays |
-
1992
- 1992-10-15 JP JP27706192A patent/JPH06130403A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8068206B2 (en) | 1999-03-22 | 2011-11-29 | Tannas Jr Lawrence E | Customized electronic displays and methods of customizing the physical size and/or shape thereof |
| US8792076B2 (en) | 1999-03-22 | 2014-07-29 | Lawrence E. Tannas, Jr. | Customized electronic displays and methods of customizing the physical size and/or shape thereof |
| US8235761B2 (en) | 2004-09-02 | 2012-08-07 | Tannas Jr Lawrence E | Apparatus and methods for resizing electronic displays |
| US8636556B2 (en) | 2004-09-02 | 2014-01-28 | Lawrence E. Tannas, Jr. | Apparatus and methods for resizing electronic displays |
| US8259282B2 (en) | 2010-05-17 | 2012-09-04 | Tannas Jr Lawrence E | Method of repairing short or potential short circuits during resizing of an electronic flat panel display |
| US8804090B2 (en) | 2010-12-02 | 2014-08-12 | Lawrence E. Tannas, Jr. | Methods for creating a minimally visible seal along the edge of a flat panel display |
| US8864541B2 (en) | 2011-11-04 | 2014-10-21 | Lawrence E. Tannas, Jr. | Apparatus and methods for resealing resized electronic displays |
| US8885138B2 (en) | 2012-04-03 | 2014-11-11 | Lawrence E. Tannas, Jr. | Apparatus and methods for resizing electronic displays |
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