JPH0462365B2 - - Google Patents
Info
- Publication number
- JPH0462365B2 JPH0462365B2 JP57206691A JP20669182A JPH0462365B2 JP H0462365 B2 JPH0462365 B2 JP H0462365B2 JP 57206691 A JP57206691 A JP 57206691A JP 20669182 A JP20669182 A JP 20669182A JP H0462365 B2 JPH0462365 B2 JP H0462365B2
- Authority
- JP
- Japan
- Prior art keywords
- panel
- sealing material
- pressure
- substrates
- curing
- 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.)
- Expired - Lifetime
Links
- 239000003566 sealing material Substances 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000004973 liquid crystal related substance Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 239000003086 colorant Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
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
- G02F1/1339—Gaskets; Spacers; Sealing 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)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は表示パネルの製造法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method of manufacturing a display panel.
従来例の構成とその問題点
従来の表示パネルの製造法は第１図に示すよう
に、透明電極及び配向膜を形成した２枚の透明基
板１，２の片方にシール材３を塗布し、両透明基
板１，２を貼り合わせてシール材３を硬化後、液
晶注入口４より液晶を注入し封止するという方法
であつた。そしてシール材硬化のときは例えば第
２図のようにパネル周辺部（シール部分上）をク
リツプ５で保持して押えるか或いは第３図のよう
にパネル全体に重し６を載せて硬化するという方
法が採られていた。ところがシール部分上のみを
押えるとパネル中心部でギヤツプが厚くなる傾向
があり、間隙の不均一性に帰因して干渉色の発生
や表示むら等の不良が発生するという問題があつ
た。又パネル全体を押えると大変手間がかかり時
間を労費するだけでなく、押え方によりギヤツプ
むらが出たり位置ずれを起こし易いという問題が
あり、何れにせよ歩留りは良くなかつた。Structure of conventional example and its problems As shown in FIG. 1, the conventional display panel manufacturing method is to apply a sealing material 3 to one of two transparent substrates 1 and 2 on which transparent electrodes and alignment films are formed, The method was to bond both transparent substrates 1 and 2 together, harden the sealing material 3, and then inject liquid crystal through the liquid crystal injection port 4 for sealing. When curing the sealing material, for example, as shown in Fig. 2, the panel periphery (above the sealing part) is held and pressed with clips 5, or as shown in Fig. 3, a weight 6 is placed on the entire panel. method was adopted. However, if only the seal area is pressed, the gap tends to become thicker at the center of the panel, resulting in problems such as the occurrence of interference colors and display unevenness due to the non-uniformity of the gap. Furthermore, pressing the entire panel is not only time-consuming and time-consuming, but also has the problem of uneven gaps and misalignment depending on the method of pressing, and in any case, the yield is not good.
発明の目的
本発明は上記従来の欠点を解消するもので、ギ
ヤツプが均一で、干渉色、表示むら等の不良のな
い高性能、高歩留りの表示パネル製造を目的とす
る。OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and aims to manufacture a high-performance, high-yield display panel with uniform gaps and no defects such as interference colors or display unevenness.
発明の構成
上記目的を達成するため、本発明の表示パネル
の製造法は、２枚の基板間にシール材を閉ループ
状に設け、パネル外部の圧力を内部より高圧に保
持しながらシール材を加熱硬化し、その後、閉ル
ープを破断する如く、少なくとも一方の基板を切
断することによつて、破断部に液晶注入口を設け
るもので、ギヤツプの不均一、干渉色、表示むら
の発生、位置ずれ等の不良がなくなるものであ
る。Structure of the Invention In order to achieve the above object, the display panel manufacturing method of the present invention provides a sealing material between two substrates in a closed loop, and heats the sealing material while maintaining pressure on the outside of the panel at a higher pressure than on the inside. After curing, at least one of the substrates is cut so as to break the closed loop, and a liquid crystal injection port is provided at the broken part, which eliminates problems such as uneven gaps, interference colors, display unevenness, and misalignment. This eliminates defects.
実施例の説明
以下本発明の一実施例について、図面（第４図
〜第９図）に基づいて説明する。第４図に示すよ
うにパネルの基板となる透明基板１１の上に透明
電極１２並びに配向膜１３を形成して後、シール
材１４をスクリーン印刷等で第５図に示すように
設け、この透明基板１１に対し透明電極１５、配
向膜１６を形成した透明基板１７を第６図に示す
ように貼り合わせてパネル１８を作り、このパネ
ル１８を第７図に示すようにパネルホルダー１９
により起立状態で並べて圧力恒温槽２０内に入れ
る。尚前記シール材１４は両基板１１，１７間で
閉ループ状となつている。シーズ材１４が未硬化
の状態でパネル１８内外に大きな圧力差を生じる
とシール材１４が圧力差に耐えられず閉ループが
破壊される恐れがあるので、温度上昇と共にパネ
ル１８内外の圧力が略等しくなるように恒温槽２
０内の圧力をコントロールしながら先ずシール材
１４を仮硬化させ本硬化に入る。仮硬化時の温度
上昇中、パネル１８内外の圧力を略等しく保つに
は、例えば恒温槽２０内に設けた温度センサ並び
に圧力センサ（図示は省略）の出力により電磁バ
ルブ２１を制御することにより行なえる。２２は
コンプレツサーである。本硬化時はパネル１８に
均一な圧力がかかるようパネル１８外圧を内圧よ
り高く保持する。例えば、硬化温度160℃のシー
ル材を使用したときは室温（T1＝20℃＝293゜K）
で１気圧のパネルの内圧は、硬化中（T2＝160℃
＝433゜K）ではT2×１／T1＝1.48気圧となるの
で、恒温槽２０内の圧力は1.48気圧以上に保つ必
要がある。硬化終了後、温度を室温に戻してから
槽２０内を常圧に戻し、第８図ａに示すようにパ
ネル１８をＡ−A′で切断して第８図ｂに示すよ
うに２分割し、これにより明けられた注入口２３
より液晶を注入し封止する。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below based on the drawings (FIGS. 4 to 9). As shown in FIG. 4, after forming a transparent electrode 12 and an alignment film 13 on a transparent substrate 11 serving as a panel substrate, a sealing material 14 is provided by screen printing or the like as shown in FIG. A panel 18 is made by bonding a transparent substrate 17 with a transparent electrode 15 and an alignment film 16 formed thereon to the substrate 11 as shown in FIG. 6, and this panel 18 is mounted on a panel holder 19 as shown in FIG.
They are placed in the pressure constant temperature bath 20 in an upright position. Note that the sealing material 14 forms a closed loop between both substrates 11 and 17. If a large pressure difference occurs between the inside and outside of the panel 18 when the sheathing material 14 is uncured, the sealing material 14 will not be able to withstand the pressure difference and the closed loop may be destroyed. Therefore, as the temperature rises, the pressure inside and outside the panel 18 becomes approximately equal. Temperature bath 2 so that
First, the sealing material 14 is temporarily cured while controlling the pressure within 0, and then main curing begins. During the temperature rise during temporary curing, the pressure inside and outside the panel 18 can be kept approximately equal by controlling the electromagnetic valve 21 using the outputs of a temperature sensor and a pressure sensor (not shown) provided in the thermostatic oven 20, for example. Ru. 22 is a compressor. During main curing, the external pressure of the panel 18 is maintained higher than the internal pressure so that a uniform pressure is applied to the panel 18. For example, when using a sealant with a curing temperature of 160°C, the temperature is room temperature (T 1 = 20°C = 293°K).
The internal pressure of the panel is 1 atm during curing (T 2 = 160℃
= 433°K), T 2 ×1/T 1 = 1.48 atm, so the pressure inside the thermostatic chamber 20 must be maintained at 1.48 atm or higher. After the curing is completed, the temperature is returned to room temperature, the inside of the tank 20 is returned to normal pressure, and the panel 18 is cut along A-A' as shown in FIG. 8a and divided into two parts as shown in FIG. 8b. , the injection port 23 opened by this
Inject more liquid crystal and seal.
尚第９図は表示パネルを大量に製造する状態を
示す。 Incidentally, FIG. 9 shows a state in which display panels are manufactured in large quantities.
ところで実施例を示す図面において、パネル１
８の両基板１１，１７はあたかも同一形状のよう
に示されているが、実際には透明電極１２，１５
もパタン化されており、それらに電圧を印加する
為の端子がパネル周辺部まで引き出されており、
両基板１１，１７のサイズも通常異なつている。
この点については本発明では本質的な問題ではな
いので図示を簡略化している。 By the way, in the drawings showing the embodiment, panel 1
Both substrates 11 and 17 of No. 8 are shown as if they have the same shape, but in reality, the transparent electrodes 12 and 15
are also patterned, and the terminals for applying voltage to them are drawn out to the periphery of the panel.
The sizes of both substrates 11 and 17 are also usually different.
Since this point is not an essential problem in the present invention, the illustration is simplified.
発明の効果
以上のように本発明によれば、シール材硬化の
ときパネル全体に一様な圧力がかかつた状態で硬
化される為、小さなパネルは勿論、たとえパネル
が大型化してもギヤツプが均一で干渉色、表示む
ら、位置ずれ等の不良のない高性能、高歩留りの
表示パネルが製造できるようになつた。Effects of the Invention As described above, according to the present invention, when the sealing material is cured, the entire panel is cured under uniform pressure, so there is no gap even when the panel is large or small. It has become possible to manufacture high-performance, high-yield display panels that are uniform and free from defects such as interference colors, display unevenness, and positional shifts.
第１図はシール材硬化直前の従来の表示パネル
の平面図、第２図及び第３図は従来のパネル製造
法のシール材硬化時のパネルの押え方を示す説明
図、第４図〜第９図は本発明の一実施例を示し、
第４図〜第６図はシール材硬化までの表示パネル
製造順序を示す説明図で、各図においてａは平面
図、ｂは断面図、第７図はシール材硬化時の説明
図、第８図はシール材硬化後においてパネルを分
割させる状態を示し、ａは分割前の平面図、ｂは
分割後の平面図、第９図は表示パネルを大量に製
造するときの説明図である。
１１……透明基板、１２……透明電極、１３…
…配向膜、１４……シール材、１５……透明電
極、１６……配向膜、１７……透明基板、１８…
…パネル、１９……パネルホルダー、２０……圧
力恒温槽、２１……電磁バルブ、２２……コンプ
レツサー、２３……注入口。
Fig. 1 is a plan view of a conventional display panel immediately before the sealant hardens; Figs. 2 and 3 are explanatory diagrams showing how to hold the panel when the sealant hardens in the conventional panel manufacturing method; Figs. Figure 9 shows an embodiment of the present invention,
4 to 6 are explanatory diagrams showing the display panel manufacturing order up to the hardening of the sealing material. In each diagram, a is a plan view, b is a sectional view, FIG. 7 is an explanatory diagram when the sealing material is hardened, and FIG. The figures show a state in which the panel is divided after the sealing material has hardened, where a is a plan view before division, b is a plan view after division, and FIG. 9 is an explanatory diagram when manufacturing display panels in large quantities. 11...Transparent substrate, 12...Transparent electrode, 13...
...Alignment film, 14...Sealing material, 15...Transparent electrode, 16...Alignment film, 17...Transparent substrate, 18...
... Panel, 19 ... Panel holder, 20 ... Pressure constant temperature chamber, 21 ... Solenoid valve, 22 ... Compressor, 23 ... Inlet.
Claims (1)
け、パネル外部の圧力を内部より高圧に保持しな
がらシール材を加熱硬化し、その後、閉ループを
破断する如く、少なくとも一方の基板を切断する
ことによつて、破断部に液晶注入口を設ける表示
パネルの製造法。1. Providing a sealing material between two substrates in a closed loop, heating and curing the sealing material while maintaining a higher pressure on the outside of the panel than on the inside, and then cutting at least one of the substrates so as to break the closed loop. A method of manufacturing a display panel in which a liquid crystal injection port is provided in the broken part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20669182A JPS5995516A (en) | 1982-11-24 | 1982-11-24 | Manufacture of display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20669182A JPS5995516A (en) | 1982-11-24 | 1982-11-24 | Manufacture of display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5995516A JPS5995516A (en) | 1984-06-01 |
| JPH0462365B2 true JPH0462365B2 (en) | 1992-10-06 |
Family
ID=16527511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20669182A Granted JPS5995516A (en) | 1982-11-24 | 1982-11-24 | Manufacture of display panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5995516A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2504111B2 (en) * | 1988-04-07 | 1996-06-05 | 凸版印刷株式会社 | Liquid crystal panel manufacturing method |
| KR20000073056A (en) * | 1999-05-04 | 2000-12-05 | 윤종용 | Control Panel For Microwaveoven |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5564213A (en) * | 1978-11-07 | 1980-05-14 | Seiko Epson Corp | Liquid crystal display panel |
| JPS57188018A (en) * | 1981-05-15 | 1982-11-18 | Nissan Motor Co Ltd | Production of display element |
-
1982
- 1982-11-24 JP JP20669182A patent/JPS5995516A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5564213A (en) * | 1978-11-07 | 1980-05-14 | Seiko Epson Corp | Liquid crystal display panel |
| JPS57188018A (en) * | 1981-05-15 | 1982-11-18 | Nissan Motor Co Ltd | Production of display element |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5995516A (en) | 1984-06-01 |
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