JPS59226323A - Method of sealing inlet for injecting liquid crystal - Google Patents
Method of sealing inlet for injecting liquid crystalInfo
- Publication number
- JPS59226323A JPS59226323A JP10218083A JP10218083A JPS59226323A JP S59226323 A JPS59226323 A JP S59226323A JP 10218083 A JP10218083 A JP 10218083A JP 10218083 A JP10218083 A JP 10218083A JP S59226323 A JPS59226323 A JP S59226323A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- liquid crystal
- injection port
- inlet
- liquid crystals
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1341—Filling or closing of cells
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、液晶表示パネルの液晶注入口封正方法に関し
、特に、有機樹脂による封止方法に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a method of sealing a liquid crystal injection port of a liquid crystal display panel, and particularly to a method of sealing with an organic resin.
（ロ）従来技術
一般に、液晶表示パネルは、透明電極の設けられた電極
基板を対向させ、その周辺部を枠状のシール材によって
一定の間隙を設けて接着し、シール材の一部に設けられ
た切欠きが液晶表示パネルの側辺に開口する液晶注入口
から液晶を注入した後、注入口を封止することによって
形成される。(B) Prior art In general, in a liquid crystal display panel, electrode substrates provided with transparent electrodes are placed facing each other, and their peripheral parts are adhered with a certain gap between them using a frame-shaped sealing material. The notch is formed by injecting liquid crystal through a liquid crystal injection port opened on the side of the liquid crystal display panel, and then sealing the injection port.
従来、液晶注入口を封止する材料としては、電極基板を
形成するガラスと接着力が強（、液晶と反応しない物質
、例えば、エポキシ系樹脂、特に、二液型のエポキシ系
接着樹脂が用いられている。Conventionally, the materials used to seal the liquid crystal injection port have been materials that have strong adhesion to the glass that forms the electrode substrate (and materials that do not react with the liquid crystal, such as epoxy resins, especially two-component epoxy adhesive resins). It is being
ところが、エポキシ系接着樹脂を液晶注入口に塗布した
直後に加熱すると、加熱によって樹脂の粘度が低下し、
液晶内へ樹脂が流入してしまう。そこで、樹脂を塗布し
てからある程度硬化するまで、例えば６時間から８時間
、放置した後、加熱硬化させ℃いた。従つ℃、非常に作
業性の悪い欠点があった。However, if the epoxy adhesive resin is heated immediately after being applied to the liquid crystal injection port, the viscosity of the resin will decrease due to the heating.
Resin flows into the liquid crystal. Therefore, after applying the resin, it was left to stand until it had hardened to some extent, for example, for 6 to 8 hours, and then heated and hardened at °C. Therefore, it had the disadvantage of very poor workability.
また、液晶注入口にエポキシ系接着樹脂を塗布する際に
、注入口の周囲が、液晶で濡れているため、樹脂硬化後
にガラスと樹脂との十分な接着力が得られず、信頼性を
低下させていた。In addition, when applying epoxy adhesive resin to the liquid crystal injection port, the area around the injection port is wet with liquid crystal, so after the resin hardens, sufficient adhesion between the glass and the resin cannot be obtained, reducing reliability. I was letting it happen.
（ハ）発明の目的
本発明は、上述した点に鑑みて為されたものであり、液
晶表示パネルの製造に於ける作業性の向上、及び、液晶
表示パネルの信頼性の向上を目的とする。(c) Purpose of the invention The present invention has been made in view of the above-mentioned points, and aims to improve workability in manufacturing liquid crystal display panels and improve reliability of liquid crystal display panels. .
（に）発明の構成
本発明は、透明電極を有する一対の電極基板を周辺部の
シール材を介して互いに接着し、該シール材の一部に設
けられた切欠が前記電極基板の側部に開口する注入口を
設け、該注入口から液晶を注入した後、封止する液晶注
入口封正方法に於いて、液晶注入後、前記注入口に嫌気
性紫外線硬化樹脂を塗布し、所定時間紫外線を照射して
硬化させた後、洗浄によって前記嫌気性紫外線硬化樹脂
の未硬化部分を除去し、更に、熱硬化性樹脂を前記注入
口に塗布した後、加熱硬化させて液晶注入口を封止する
構成である。(2) Structure of the Invention The present invention is characterized in that a pair of electrode substrates having transparent electrodes are adhered to each other via a sealing material in the peripheral portion, and a notch provided in a part of the sealing material is formed in a side portion of the electrode substrate. In a liquid crystal injection port sealing method in which an opening injection port is provided, liquid crystal is injected through the injection port, and then sealed, an anaerobic ultraviolet curable resin is applied to the injection port after the liquid crystal is injected, and ultraviolet rays are applied for a predetermined period of time. After irradiating and curing, the uncured portion of the anaerobic ultraviolet curable resin is removed by washing, and a thermosetting resin is applied to the injection port, and the liquid crystal injection port is sealed by heating and curing. It is configured to do this.
（ホ）実施例
第１図、第２図及び第３図に基いて本発明の詳細な説明
する。第１図に於いて、先ず、透明電極が形成された電
極基板（１）（２）を、その透明電極面を対向させて、
周辺部を枠状のシール拐（３）によって、所定の間隙を
設けて接着することにより、液晶表示パネル（４）を形
成する。枠状のシール材（３）の一部は切欠かれて電極
基板（１）（２）の側面に開口する液晶注入口（５）を
形成する。この注入口（５）より液晶を周知の方法で注
入した後、液晶注入口（５）に嫌気性紫外線硬化樹脂（
６）を塗布する。嫌気性紫外線硬化樹脂（６）は、例え
ばシス１−４ポリイソプレン変性物であり、酸素を遮断
した雰囲気で紫外線を照射することにより硬化する樹脂
である。この様な嫌気性紫外線硬化樹脂（６）を塗布し
た後、時間を置かずに、５００Ｗ高圧水銀灯下で約３０
秒間露光し、紫外線を照射する。その結果、液晶注入口
（５）から内部に侵入した嫌気性紫外線硬化樹脂（６）
は硬化するが、外部に露出して酸素に触れている表面及
び表面下は硬化されない。(E) Embodiment The present invention will be explained in detail with reference to FIGS. 1, 2, and 3. In FIG. 1, first, electrode substrates (1) and (2) on which transparent electrodes are formed are placed with their transparent electrode surfaces facing each other.
A liquid crystal display panel (4) is formed by bonding the peripheral portion with a frame-shaped seal (3) with a predetermined gap. A part of the frame-shaped sealing material (3) is cut out to form a liquid crystal injection port (5) that opens on the side surface of the electrode substrates (1) and (2). After injecting liquid crystal through this injection port (5) using a well-known method, the anaerobic ultraviolet curing resin (
6) Apply. The anaerobic ultraviolet curable resin (6) is, for example, a modified cis 1-4 polyisoprene, and is a resin that is cured by irradiation with ultraviolet rays in an oxygen-blocked atmosphere. After applying such an anaerobic ultraviolet curing resin (6), immediately heat it under a 500W high-pressure mercury lamp for about 30 minutes.
Expose for seconds and irradiate with ultraviolet light. As a result, the anaerobic ultraviolet curing resin (6) entered the interior through the liquid crystal injection port (5).
is cured, but the surface and subsurface parts exposed to the outside and exposed to oxygen are not cured.
次に、紫外線を照射した液晶表示パネル（４）をイソプ
ロピルアルコールで約３０秒間露光スる。この洗浄によ
り、酸素に触れていて硬化されなかった嫌気性紫外線硬
化樹脂（６）が除去され、第２図に示される如く、液晶
注入口（５）の内部に侵入して硬化した部分（６５のみ
が残り、液晶を封止している。Next, the liquid crystal display panel (4) irradiated with ultraviolet rays is exposed to isopropyl alcohol for about 30 seconds. This cleaning removes the anaerobic ultraviolet curable resin (6) that was not cured due to exposure to oxygen, and as shown in FIG. Only the liquid crystal remains, sealing the liquid crystal.
従って、嫌気性紫外線硬化樹脂（６）を塗布した際に、
はみだした樹脂等はきれいに除去されるので、嫌気性紫
外線硬化樹脂（６）の塗布は、はみだし等を気にせずに
ラフに行うことができる。洗浄後、加熱あるいは自然乾
燥することにより、注入口（５）の設けられた側面は、
水分あるいは液晶等が残存することがない。Therefore, when applying the anaerobic ultraviolet curing resin (6),
Since the protruding resin and the like are removed cleanly, the anaerobic ultraviolet curing resin (6) can be applied roughly without worrying about the protruding resin. After cleaning, by heating or naturally drying, the side surface with the injection port (5) is
No moisture or liquid crystal remains.
第３図に於いて、洗浄乾燥した液晶表示パネル（４）の
液晶注入口（５）に、熱硬化性樹脂（力を塗布し、加熱
硬化する。熱硬化性樹脂（力は、−成型のエポキシ系接
着樹脂、あるいは、二液型のエポキシ系接着樹脂が用い
られ、この樹脂（力の塗布は、すでに封止されている液
晶注入口（５）を完全に覆う様に行う。また、熱硬化性
樹脂（力を塗布する際、注入口（５）の設けらｎた側面
は、水分等の不純物が残存していないので、加熱硬化後
の樹脂（７）と電極基板（１）（２）及び注入口（５）
内の樹脂（６）との接着強度は確実なものとなる。更に
、塗布直後に加熱しても、注入口（５）内は嫌気性紫外
線硬化樹脂（６）ですでに封止されているため、熱硬化
性樹脂（力の粘度が低下しても何ら問題は無い。尚、加
熱は８０℃で約３時間為される。In Figure 3, a thermosetting resin (force) is applied to the liquid crystal injection port (5) of the washed and dried liquid crystal display panel (4), and the thermosetting resin is heated and cured. Epoxy adhesive resin or two-component epoxy adhesive resin is used, and this resin is applied in such a way that it completely covers the already sealed liquid crystal injection port (5). When applying the curable resin (force), the resin (7) and the electrode substrate (1) (2) after being heated and cured, since no impurities such as moisture remain on the side where the injection port (5) is provided. ) and inlet (5)
The adhesive strength with the inner resin (6) is ensured. Furthermore, even if heated immediately after application, the inside of the injection port (5) is already sealed with the anaerobic ultraviolet curing resin (6), so there will be no problem even if the viscosity of the thermosetting resin (force) decreases. There is no. Heating is done at 80° C. for about 3 hours.
（ハ）発明の効果
上述の如く、本発明によれば、嫌気性紫外線硬化樹脂の
塗布後、及び、熱硬化性樹脂の塗布後、時間を待たずに
次の処理を行うことができるため、作業性が大幅に向上
する。また、嫌気性紫外線硬化樹脂が注入口の内部のみ
で硬化するため、洗浄を行うことが可能となり、熱硬化
性樹脂と電極基板との接着強度が向上し、更に、二重の
封止構造となるため、液晶表示パネルの信頼性が大幅に
向上する利点を有している。(C) Effects of the Invention As described above, according to the present invention, the next treatment can be carried out without waiting after applying the anaerobic ultraviolet curable resin and after applying the thermosetting resin. Work efficiency is greatly improved. In addition, since the anaerobic ultraviolet curable resin cures only inside the injection port, cleaning is possible, improving the adhesive strength between the thermosetting resin and the electrode substrate, and further improving the double sealing structure. This has the advantage that the reliability of the liquid crystal display panel is greatly improved.
第１図、第２図及び第３図は、本発明の詳細な説明する
ための一部平面図である。
（１）（２１・・・電極基板、 （３）・・・シール材
、 （４）・・・液晶表示パネル、 （５）・・・液晶
注入口、 （６）・・・嫌気性紫外線硬化樹脂、 （力
・・・熱硬化性樹脂。
１５１−1, 2, and 3 are partial plan views for explaining the present invention in detail. (1) (21...electrode substrate, (3)...sealing material, (4)...liquid crystal display panel, (5)...liquid crystal inlet, (6)...anaerobic ultraviolet curing Resin, (force...thermosetting resin. 151-
Claims (1)
材を介（２て互いに接着し、該シール材の一部に設けら
れた切欠きが前記電極基板の側部に開口する注入口を形
成し、該注入口から液晶を注入した後、封止する液晶注
入口封正方法に於いて、液晶注入後、前記注入口に嫌気
性紫外線硬化樹脂を塗布し、所定時間紫外線を照射して
硬化させた後、洗浄によ〜て前記嫌気性紫外線硬化樹脂
の未硬化部分を除去し、更に、熱硬化性樹脂を前記注入
口に塗布した後、加熱硬化させることを特徴とする液晶
注入口封正方法。1. A pair of electrode substrates having transparent electrodes are bonded to each other through a peripheral sealing material (2), and a notch provided in a part of the sealing material forms an injection port opening on the side of the electrode substrate. In a liquid crystal injection port sealing method in which liquid crystal is formed and sealed after liquid crystal is injected from the injection port, an anaerobic ultraviolet curing resin is applied to the injection port and ultraviolet rays are irradiated for a predetermined period of time. After curing, an uncured portion of the anaerobic ultraviolet curable resin is removed by cleaning, and a thermosetting resin is further applied to the injection port, followed by heating and curing the liquid crystal injection port. Sealing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10218083A JPS59226323A (en) | 1983-06-07 | 1983-06-07 | Method of sealing inlet for injecting liquid crystal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10218083A JPS59226323A (en) | 1983-06-07 | 1983-06-07 | Method of sealing inlet for injecting liquid crystal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59226323A true JPS59226323A (en) | 1984-12-19 |
Family
ID=14320476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10218083A Pending JPS59226323A (en) | 1983-06-07 | 1983-06-07 | Method of sealing inlet for injecting liquid crystal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59226323A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61267702A (en) * | 1985-05-23 | 1986-11-27 | Matsushita Electric Ind Co Ltd | Production of optical filter |
| WO2001025843A1 (en) * | 1999-10-06 | 2001-04-12 | Matsushita Electric Industrial Co., Ltd. | Liquid crystal element, liquid crystal display device and production methods therefor |
-
1983
- 1983-06-07 JP JP10218083A patent/JPS59226323A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61267702A (en) * | 1985-05-23 | 1986-11-27 | Matsushita Electric Ind Co Ltd | Production of optical filter |
| WO2001025843A1 (en) * | 1999-10-06 | 2001-04-12 | Matsushita Electric Industrial Co., Ltd. | Liquid crystal element, liquid crystal display device and production methods therefor |
| US6801293B1 (en) | 1999-10-06 | 2004-10-05 | Matsushita Electric Industrial Co., Ltd. | Method for manufacturing an in-plane electric field mode liquid crystal element |
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