JPH01260418A - Production of liquid crystal display element - Google Patents
Production of liquid crystal display elementInfo
- Publication number
- JPH01260418A JPH01260418A JP8947088A JP8947088A JPH01260418A JP H01260418 A JPH01260418 A JP H01260418A JP 8947088 A JP8947088 A JP 8947088A JP 8947088 A JP8947088 A JP 8947088A JP H01260418 A JPH01260418 A JP H01260418A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- cell
- port
- injection port
- display element
- 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 94
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 238000002347 injection Methods 0.000 claims abstract description 28
- 239000007924 injection Substances 0.000 claims abstract description 28
- 239000003566 sealing material Substances 0.000 claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 230000001681 protective effect Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 15
- 239000011347 resin Substances 0.000 abstract description 18
- 229920005989 resin Polymers 0.000 abstract description 18
- 239000011248 coating agent Substances 0.000 abstract description 9
- 238000000576 coating method Methods 0.000 abstract description 9
- 239000007788 liquid Substances 0.000 abstract description 8
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000003848 UV Light-Curing Methods 0.000 abstract 2
- 230000008595 infiltration Effects 0.000 abstract 2
- 238000001764 infiltration Methods 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000002791 soaking Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 10
- 238000004140 cleaning Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008393 encapsulating agent Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、液晶表示素子の製造方法に関するもので、特
に真空注入方式による液晶注入方法として利用される。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for manufacturing a liquid crystal display element, and is particularly used as a liquid crystal injection method using a vacuum injection method.
〈従来技術〉
一般に、液晶表示素子の構造は第４図に示す如く、電導
性フィルムに適当なコーティングを施した透明電極ｌが
ガラス基板２に貼りつけられ、−対のガラス基板２が配
向膜３を介して約１０μｍの間隔で向かい合って配置さ
れた空間にセル４が形成され、該セル４に液晶５が注入
されており、周囲をシール材６により封着されている。<Prior art> In general, the structure of a liquid crystal display element is as shown in FIG. 4, in which a transparent electrode l made of a conductive film coated with an appropriate coating is pasted on a glass substrate 2, and the opposite glass substrate 2 is attached with an alignment film. Cells 4 are formed in spaces facing each other with an interval of about 10 μm between cells 3, liquid crystals 5 are injected into the cells 4, and the periphery of the cells 4 is sealed with a sealing material 6.
また、ガラス基板２の外側には偏光板７が設けられてい
る。Further, a polarizing plate 7 is provided on the outside of the glass substrate 2.
従来、セル４に液晶５を注入する方法は、第５図に示す
如く、セル４内の空気を封入器８で真空脱気した後、セ
ル４の液晶注入口９を液晶５に浸し、封入器８内に不活
性ガスを導入し、真空を解除することにより、液晶５を
セル４内に注入する真空注入方式が行なわれている。ま
た、セル４を液晶５に浸す方法としては、液晶５を溜め
た槽にセル４の液晶注入口９面を浸す方法や、液晶注入
口９のみを局部的に液晶５に接触させる方法がある。Conventionally, the method of injecting the liquid crystal 5 into the cell 4 is as shown in FIG. A vacuum injection method is used in which the liquid crystal 5 is injected into the cell 4 by introducing an inert gas into the container 8 and releasing the vacuum. Further, as a method of immersing the cell 4 in the liquid crystal 5, there are a method of immersing the surface of the liquid crystal inlet 9 of the cell 4 in a tank containing the liquid crystal 5, and a method of bringing only the liquid crystal inlet 9 into contact with the liquid crystal 5 locally. .
く 発明が解決しようとする問題点 〉しかし、前記液
晶注入方式では、セル４のシール材６の外周には、一対
のガラス基板２とシール材６により形成された間隙ＩＯ
があるため、毛細管現象により液晶５が浸入する。この
ように液晶５が間隙１０に浸入することは、液晶５を損
失するだけでなく、セル４に液晶５を注入した後、浸入
した液晶５かにじみ出てきて、電極端子部１１を汚すた
め、洗浄を必要とする。しかしながら、ガラス基板２間
の間隔が約１０μｍとせまいため、超音波洗浄等の特殊
な洗浄を行なわなければならないといった問題点がある
。[Problems to be Solved by the Invention] However, in the liquid crystal injection method, there is a gap IO formed between the pair of glass substrates 2 and the sealing material 6 on the outer periphery of the sealing material 6 of the cell 4.
Therefore, the liquid crystal 5 enters due to capillary action. Intrusion of the liquid crystal 5 into the gap 10 in this way not only causes loss of the liquid crystal 5, but also causes the liquid crystal 5 to ooze out after being injected into the cell 4 and stain the electrode terminal portion 11. Requires cleaning. However, since the distance between the glass substrates 2 is small, about 10 μm, there is a problem that special cleaning such as ultrasonic cleaning must be performed.
本発明は、上記問題点に鑑み、液晶の損失を低減させる
とともに、洗浄を簡素化することができる液晶表示素子
の製造方法の提供を目的とする。SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a method for manufacturing a liquid crystal display element that can reduce liquid crystal loss and simplify cleaning.
く 問題点を解決するための手段 〉
本発明液晶表示素子の製造方法は、一対の基板２を、シ
ール材６を介して対向配置して内部にセル４を形成し、
前記シール材６の一部に液晶注入口９を形成し、該液晶
注入口９に液晶５を浸して、セル４内に液晶５を注入す
ると同時にまたは注入前に、セル４外の基板２とシール
材６で形成される間隙ｌＯに液晶５が浸入するのを防止
する防護壁１３を形成する。Means for Solving the Problems> The method for manufacturing a liquid crystal display element of the present invention includes arranging a pair of substrates 2 facing each other with a sealing material 6 interposed therebetween to form a cell 4 therein,
A liquid crystal injection port 9 is formed in a part of the sealing material 6, and the liquid crystal 5 is immersed in the liquid crystal injection port 9, and at the same time or before the liquid crystal 5 is injected into the cell 4, it is connected to the substrate 2 outside the cell 4. A protective wall 13 is formed to prevent the liquid crystal 5 from entering the gap lO formed by the sealing material 6.
く作用〉
上記問題点解決手段において、液晶５が液晶注入口９に
接触すると同時に、大粘性液体（例えば紫外線硬化型樹
脂）１２もセル側面に接触し、セルの液晶注入口９の近
辺の間隙１０に塗布し防護壁１３を形成することによっ
て、間隙１０に液晶５が侵入するのを防止することがで
きる。In the above problem solving means, at the same time that the liquid crystal 5 comes into contact with the liquid crystal injection port 9, the large viscous liquid (for example, ultraviolet curable resin) 12 also comes into contact with the side surface of the cell, filling the gap near the liquid crystal injection port 9 of the cell. By applying the liquid crystal 5 to the gap 10 to form the protective wall 13, it is possible to prevent the liquid crystal 5 from entering the gap 10.
〈実施例〉
以下、本発明の一実施例を第１図〜第３図に括づいて説
明する。第１図は本発明の液晶表示素子の製造装置の構
成図、第２図は本発明の製造方法により製造された液晶
表示素子、第３図は第２図のＸ−Ｘ線に沿う縦断側面図
である。<Example> An example of the present invention will be described below with reference to FIGS. 1 to 3. FIG. 1 is a block diagram of a manufacturing apparatus for a liquid crystal display element of the present invention, FIG. 2 is a liquid crystal display element manufactured by the manufacturing method of the present invention, and FIG. 3 is a longitudinal cross-sectional side view taken along the line X-X of FIG. 2. It is a diagram.
まず、製造装置を説明すると、これは、図示の如く、液
晶表示素子を封入するための封入器８と、該封入器８に
上下方向へ移動自在に内装された載置台１４と、該載置
台１４の上面に配された液晶供給槽１５と、該液晶供給
槽１５の両側に配される塗布装置１６とが設けられてい
る。First, the manufacturing apparatus will be explained. As shown in the figure, this includes an enclosure 8 for enclosing a liquid crystal display element, a mounting table 14 installed inside the enclosure 8 so as to be movable in the vertical direction, and the mounting table. A liquid crystal supply tank 15 arranged on the upper surface of the liquid crystal supply tank 14 and coating devices 16 arranged on both sides of the liquid crystal supply tank 15 are provided.
前記封入器８は、ガラス製で釣鐘状をしており、該封入
器８の下部に前記載置台１４が内装され、該載置台１４
の上面に液晶供給槽１５と該液晶供給Ｗｊ１５の両側に
０．５＋ｎｍの間隔で塗布装置１６が配置されており、
前記載置台１４は、移動装置１７により上下方向に移動
される。前記液晶供給槽１５は、液晶５を貯めておく槽
であり、前記塗布装置１６は、円筒状のパイプで先端か
ら樹脂が送給される。また、セル４は液晶注入口９を下
にして、該液晶注入口９だけが前記液晶供給槽１５の液
晶５に浸されるように封入器８の上部に着脱自在に支持
体１８で固定されている。このとき、液晶注入口９の幅
は１．２ｍｍあり、セル４のシール材６の外周のガラス
基板部Ａは幅が０．３ｍｍある。そして、封入器８の側
部には、真空脱気をするための真空装置へ通じる排気口
１９と、窒素ガス（不活性ガス）を供給する送給口２０
が設けられている。The enclosure 8 is made of glass and has a bell shape, and the mounting table 14 is installed in the lower part of the enclosure 8.
A liquid crystal supply tank 15 and a coating device 16 are arranged on both sides of the liquid crystal supply Wj15 at an interval of 0.5+nm,
The mounting table 14 is moved in the vertical direction by a moving device 17. The liquid crystal supply tank 15 is a tank for storing the liquid crystal 5, and the coating device 16 is a cylindrical pipe to which resin is supplied from the tip. Further, the cell 4 is removably fixed to the upper part of the enclosure 8 with a support 18 with the liquid crystal injection port 9 facing down, so that only the liquid crystal injection port 9 is immersed in the liquid crystal 5 of the liquid crystal supply tank 15. ing. At this time, the width of the liquid crystal injection port 9 is 1.2 mm, and the width of the glass substrate portion A around the outer periphery of the sealing material 6 of the cell 4 is 0.3 mm. On the side of the enclosure 8, there is an exhaust port 19 leading to a vacuum device for vacuum deaeration, and a supply port 20 for supplying nitrogen gas (inert gas).
is provided.
上記構成の製造装置を用いた製造方法は、セル４を封入
器８に挿入、固定して、真空装置により封入器８内を脱
気して、セル４内を真空にする。In the manufacturing method using the manufacturing apparatus having the above configuration, the cell 4 is inserted and fixed into the enclosure 8, and the inside of the enclosure 8 is evacuated by a vacuum device to create a vacuum inside the cell 4.
そして、載置台Ｉ４を上昇して、セル４の液晶注入口９
部側面に液晶供給槽１５および塗布装置１６を接触させ
、液晶注入口９より液晶５をセル４内に注入し始めると
同時に、塗布装置１４より大粘性液体（紫外線硬化型樹
脂）１２を液晶注入口９の両側に塗布する。液晶５は、
ビフェニル系樹脂（粘度３０ｃｐｓ）で、紫外線硬化型
樹脂１２は、粘度が５００．５０００，２５０００ｃｐ
ｓの３種類のウレタン系紫外線硬化型樹脂１２である。Then, the mounting table I4 is raised and the liquid crystal injection port 9 of the cell 4 is
The liquid crystal supply tank 15 and the coating device 16 are brought into contact with the side surface of the cell, and at the same time the liquid crystal 5 starts to be injected into the cell 4 from the liquid crystal injection port 9, the liquid crystal is injected with a large viscosity liquid (ultraviolet curing resin) 12 from the coating device 14. Apply to both sides of the entrance 9. The liquid crystal 5 is
Biphenyl resin (viscosity 30 cps), ultraviolet curing resin 12 has a viscosity of 500, 5000, 25000 cps.
These are three types of urethane-based ultraviolet curing resins 12.
このとき、紫外線硬化型樹脂１２の塗布が液晶５の接触
と同時に行なわれるため、液晶注入口９の両側の間隙１
０に防護壁１３が形成され、液晶５は該防護壁１３と液
晶注入口９の間隙に浸入するだけで、大粘性液体（紫外
線硬化型樹脂）１２の液晶注入口９部への侵入はなく、
広い粘度範囲の大粘性液体（紫外線硬化型樹脂）１２を
使用することが可能である。At this time, since the application of the ultraviolet curable resin 12 is carried out simultaneously with the contact with the liquid crystal 5, the gap 1 on both sides of the liquid crystal injection port 9 is
A protective wall 13 is formed at 0, and the liquid crystal 5 only intrudes into the gap between the protective wall 13 and the liquid crystal inlet 9, and the large viscous liquid (ultraviolet curing resin) 12 does not intrude into the liquid crystal inlet 9. ,
It is possible to use a large viscosity liquid (ultraviolet curing resin) 12 with a wide viscosity range.
そして、セル４と液晶供給槽１５および塗布装置１６を
接触させた約６秒後に窒素ガスを送給して、封入器８内
の真空状態を解除する。セル４内に液晶５を充満させた
後、セル４を取出して液晶注入口９を粘度的２５０００
ｃｐｓの封止材（紫外線゛硬化型樹脂）１３ａで封止し
、硬化処理を行なう。Then, about 6 seconds after the cell 4, the liquid crystal supply tank 15, and the coating device 16 are brought into contact, nitrogen gas is supplied to release the vacuum state in the enclosure 8. After filling the cell 4 with the liquid crystal 5, take out the cell 4 and fill the liquid crystal inlet 9 with a viscosity of 25,000.
It is sealed with a CPS sealing material (ultraviolet curable resin) 13a, and a curing process is performed.
この時、先に塗布された大粘性液体（紫外線硬化型樹脂
）１２も同時に硬化するため、汚れ等の原因とはならな
い。その後、液晶注入口９周辺をフロン系溶剤に浸し、
洗浄する。そして、図示の如く、液晶注入口９が封止材
１３ａで封止され、該注入口９の近辺に硬化した大粘性
流体（紫外線硬化型樹脂）１２が付着した液晶表示素子
が製造できる。At this time, the previously applied large viscous liquid (ultraviolet curable resin) 12 is also cured at the same time, so it does not cause stains or the like. After that, soak the area around the liquid crystal injection port 9 in a fluorocarbon solvent,
Wash. Then, as shown in the figure, a liquid crystal display element can be manufactured in which the liquid crystal injection port 9 is sealed with a sealing material 13a and a hardened large viscous fluid (ultraviolet curable resin) 12 is adhered to the vicinity of the injection port 9.
なお、本発明は、上記実施例に限定されるものではなく
、本発明の範囲内で上記実施例に多くの修正および変更
を加え得ることは勿論である。It should be noted that the present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention.
例えば、ガラス基板とシール材との間隙へ侵入する液晶
を阻止するために用いる紫外線硬化型樹脂の代わりに、
液晶注入口９部分のシール材６の巾を広くして防護壁１
３を形成しておくことも可能である。For example, instead of the ultraviolet curing resin used to prevent liquid crystal from entering the gap between the glass substrate and the sealant,
Protective wall 1 is created by widening the width of the sealing material 6 at the liquid crystal injection port 9.
It is also possible to form 3.
〈発明の効果〉
以上の説明から明らかな通り、本発明によると、セル内
に液晶を注入すると同時に、紫外線硬化型樹脂が一対の
ガラス基板とシール材でできる間隙を液晶注入口近辺で
遮断するため、わずかな液晶しか間隙に浸入しないので
、液晶の損失を低減することができる。また、セルを封
止後の洗浄工程において、セルの液晶注入口近辺を洗浄
するだけですむため、洗浄工程の簡素化を計ることがで
きるといった優れた効果がある。<Effects of the Invention> As is clear from the above description, according to the present invention, at the same time as the liquid crystal is injected into the cell, the ultraviolet curable resin blocks the gap created by the pair of glass substrates and the sealing material near the liquid crystal injection port. Therefore, only a small amount of liquid crystal intrudes into the gap, so that loss of liquid crystal can be reduced. Furthermore, in the cleaning process after sealing the cell, it is only necessary to clean the vicinity of the liquid crystal injection port of the cell, which has the excellent effect of simplifying the cleaning process.
第１図は液晶表示素子の製造装置の構成図、第２図は本
発明の製造方法により製造された液晶表示素子の平面図
、第３図は第２図のＸ−Ｘ線に沿う縦断側面図、第４図
は液晶表示素子の構成図、第５図は従来の液晶表示素子
の製造装置の構成図である。
２；ガラス基板、４：セル、５：液晶、６：シール材、
８：封入器、９：液晶注入口、ｌＯ：間隙、１２：大粘
性液体（紫外線硬化型樹脂）、１３：防護壁、１３ａ：
封止材、１４：載置台、１５・液晶供給槽、１６：塗布
装置。
出 願 人 シャープ株式会社Fig. 1 is a block diagram of a manufacturing apparatus for a liquid crystal display element, Fig. 2 is a plan view of a liquid crystal display element manufactured by the manufacturing method of the present invention, and Fig. 3 is a longitudinal cross-sectional side view taken along the line X-X in Fig. 2. 4 is a block diagram of a liquid crystal display element, and FIG. 5 is a block diagram of a conventional manufacturing apparatus for a liquid crystal display element. 2; glass substrate, 4: cell, 5: liquid crystal, 6: sealing material,
8: Encapsulant, 9: Liquid crystal injection port, lO: Gap, 12: Large viscous liquid (ultraviolet curing resin), 13: Protective wall, 13a:
Encapsulant, 14: Mounting table, 15/Liquid crystal supply tank, 16: Coating device. Applicant Sharp Corporation
Claims (1)
ルを形成し、前記シール材の一部に液晶注入口を形成し
、該液晶注入口に液晶を浸して、セル内に液晶を注入す
ると同時にまたは注入前に、セル外の基板とシール材で
形成される間隙に液晶が浸入するのを防止する防護壁を
形成することを特徴とする液晶表示素子の製造方法。A pair of substrates are arranged facing each other with a sealing material interposed therebetween to form a cell therein, a liquid crystal injection port is formed in a part of the sealing material, and the liquid crystal is immersed in the liquid crystal injection port to inject the liquid crystal into the cell. A method for manufacturing a liquid crystal display element, comprising forming a protective wall to prevent liquid crystal from entering into a gap formed between a substrate and a sealing material outside the cell at the same time as or before the injection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8947088A JPH01260418A (en) | 1988-04-11 | 1988-04-11 | Production of liquid crystal display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8947088A JPH01260418A (en) | 1988-04-11 | 1988-04-11 | Production of liquid crystal display element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01260418A true JPH01260418A (en) | 1989-10-17 |
Family
ID=13971604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8947088A Pending JPH01260418A (en) | 1988-04-11 | 1988-04-11 | Production of liquid crystal display element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01260418A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100248526B1 (en) * | 1996-03-05 | 2000-03-15 | 마찌다 가쯔히꼬 | Liquid Crystal Display Device and Method for Fabricating the Same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58114018A (en) * | 1981-12-28 | 1983-07-07 | Fujitsu Ltd | Liquid crystal display panel |
| JPS60140215A (en) * | 1983-12-27 | 1985-07-25 | Seiko Epson Corp | Liquid crystal cell |
| JPS62203129A (en) * | 1986-03-03 | 1987-09-07 | Seiko Epson Corp | Manufacture of liquid crystal display device |
| JPS62262025A (en) * | 1986-05-07 | 1987-11-14 | Canon Inc | Cell for liquid crystal |
-
1988
- 1988-04-11 JP JP8947088A patent/JPH01260418A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58114018A (en) * | 1981-12-28 | 1983-07-07 | Fujitsu Ltd | Liquid crystal display panel |
| JPS60140215A (en) * | 1983-12-27 | 1985-07-25 | Seiko Epson Corp | Liquid crystal cell |
| JPS62203129A (en) * | 1986-03-03 | 1987-09-07 | Seiko Epson Corp | Manufacture of liquid crystal display device |
| JPS62262025A (en) * | 1986-05-07 | 1987-11-14 | Canon Inc | Cell for liquid crystal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100248526B1 (en) * | 1996-03-05 | 2000-03-15 | 마찌다 가쯔히꼬 | Liquid Crystal Display Device and Method for Fabricating the Same |
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