JPH03287232A - Production of liquid crystal display panel - Google Patents
Production of liquid crystal display panelInfo
- Publication number
- JPH03287232A JPH03287232A JP8875690A JP8875690A JPH03287232A JP H03287232 A JPH03287232 A JP H03287232A JP 8875690 A JP8875690 A JP 8875690A JP 8875690 A JP8875690 A JP 8875690A JP H03287232 A JPH03287232 A JP H03287232A
- Authority
- JP
- Japan
- Prior art keywords
- sealing material
- transparent electrode
- liquid crystal
- electrode substrate
- 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 description 30
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000003566 sealing material Substances 0.000 claims abstract description 48
- 239000000758 substrate Substances 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 15
- 210000002858 crystal cell Anatomy 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 abstract description 10
- 229920000647 polyepoxide Polymers 0.000 abstract description 10
- 239000000945 filler Substances 0.000 abstract description 8
- 239000000853 adhesive Substances 0.000 abstract description 6
- 230000001070 adhesive effect Effects 0.000 abstract description 6
- 238000007650 screen-printing Methods 0.000 abstract description 4
- 239000007822 coupling agent Substances 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 2
- 150000001412 amines Chemical class 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract description 2
- 239000004848 polyfunctional curative Substances 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 239000000565 sealant Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000035882 stress Effects 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〕
本発明は大形液晶表示パネルに用いる基板の接合方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for bonding substrates used in large-sized liquid crystal display panels.
液晶表示パネルは低電圧・低消費電力といった特長を活
かし、腕時計・電卓等の小形液晶表示パネルから情報端
末機用・自動車等の大形液晶表示パネルへと、用途の拡
大と共に表示面積はより大形化への傾向にある。Taking advantage of the characteristics of low voltage and low power consumption, liquid crystal display panels have expanded from small liquid crystal display panels for watches and calculators to large liquid crystal display panels for information terminals and automobiles, and as their applications have expanded, the display area has become larger. There is a tendency toward formalization.
この液晶表示パネルの製造方法は、２枚の透明電極基板
とこれらの間に設けた枠状のシール材層によって形成さ
れる液晶セル内に液晶材を注入封止することで製造され
る。This liquid crystal display panel is manufactured by injecting and sealing a liquid crystal material into a liquid crystal cell formed by two transparent electrode substrates and a frame-shaped sealing material layer provided between them.
従来の液晶表示パネルは、第２図に示すように無機性オ
ーバコート材４が設けられている下基板２上に枠状の単
一シール材を配置し、他方、有機性オーバコート材３が
設けられている上基板１上に内部ギャップ材６を分散後
、上基板１と下基板２とを重ね合わせ圧着焼成したシー
ル材層５を形成して、上下基板１．２を接着させた液晶
セルを形成する方法が一般的に採用されている。In a conventional liquid crystal display panel, as shown in FIG. 2, a frame-shaped single sealing material is arranged on a lower substrate 2 on which an inorganic overcoat material 4 is provided, and on the other hand, an organic overcoat material 3 is provided on a lower substrate 2. After dispersing the internal gap material 6 on the upper substrate 1 provided, the upper substrate 1 and the lower substrate 2 are stacked, pressure bonded and fired to form a sealing material layer 5, and the upper and lower substrates 1.2 are bonded together. A method of forming cells is commonly employed.
この従来の製造方法による液晶表示パネルは、信頼性を
確認するために長時間の電圧印加エージングと耐湿テス
トを行うと、表示ムラが加速されて発生する。この要因
として、シール材層内及びシール材層と基板との接着界
面を通しての水分の浸入と、シール材層と基板との接着
界面の剥離等が関与する接着部の欠陥であることが分か
り、基板の接着方法に問題のあることが分った。When a liquid crystal display panel produced by this conventional manufacturing method is subjected to long-term voltage aging and moisture resistance tests to confirm reliability, display unevenness is accelerated. It was found that the causes of this were defects in the bonding area, which were caused by moisture intrusion into the sealant layer and through the adhesive interface between the sealant layer and the substrate, and by peeling of the adhesive interface between the sealant layer and the substrate. It was discovered that there was a problem with the method of bonding the board.
本発明の目的は前記課題を解決した液晶表示パネルの製
造方法を提供することにある。An object of the present invention is to provide a method for manufacturing a liquid crystal display panel that solves the above problems.
前記目的を達成するため、本発明に係る液晶表示パネル
の製造方法においては、周囲を枠状に囲繞するシール材
層を介して上下２枚の透明電極基板を接合一体ｆヒして
形成した液晶セルの空隙内に液晶材を注入してなる液晶
表示パネルの製造方法であって、
周囲を枠状に囲繞するシール材を上部透明電極基板と下
部透明電極基板に分割して配置し、両シール材を重ね合
せて２枚の透明電極基板を接合するものである。In order to achieve the above object, in the method for manufacturing a liquid crystal display panel according to the present invention, a liquid crystal display panel is manufactured by integrally bonding two transparent electrode substrates, an upper and a lower one, through a sealing material layer surrounding the periphery in a frame shape. A method of manufacturing a liquid crystal display panel in which a liquid crystal material is injected into a cell gap, the sealing material surrounding the periphery in a frame shape is divided into an upper transparent electrode substrate and a lower transparent electrode substrate, and both seals are arranged. Two transparent electrode substrates are bonded by overlapping the materials.
また、本発明に係る液晶表示パネルの製造方法において
は、上部透明電極基板と下部透明電極基板に分割して配
置した前記シール材は、各々特性の異なるシール材を用
いるものである。Further, in the method for manufacturing a liquid crystal display panel according to the present invention, the sealing materials arranged separately on the upper transparent electrode substrate and the lower transparent electrode substrate each have different characteristics.
次に本発明の実施例について図面を参照して説明する。 Next, embodiments of the present invention will be described with reference to the drawings.
（実施例１）
第１図（ａ） 、 （ｂ） 、 （ｃ）は本発明の実施
例に係る液晶表示パネルの製造方法を工程順に示す断面
図である。(Example 1) FIGS. 1(a), 1(b), and 1(c) are cross-sectional views showing a method for manufacturing a liquid crystal display panel according to an example of the present invention in order of steps.
第１図（ａ）に示すように、有機性オーバコート材１２
か設Ｇ→られている上部透明電極基板（以下、上基板と
いう）１０には第１シール材１４となるエポキシ樹脂を
シールスクリーン印刷法で枠状に配置後、内部ギャップ
材１６を分散させる。他方、無機性オーバコート材１３
が設けられている下部透明電極基板〈以下、下基板とい
う）１１には第２シール材１５を前記と同様にシールス
クリーン印刷法で配置する。As shown in FIG. 1(a), an organic overcoat material 12
On the upper transparent electrode substrate (hereinafter referred to as upper substrate) 10, which is provided with G→, an epoxy resin serving as a first sealing material 14 is arranged in a frame shape by a seal screen printing method, and then an internal gap material 16 is dispersed therein. On the other hand, inorganic overcoat material 13
The second sealing material 15 is placed on the lower transparent electrode substrate (hereinafter referred to as the lower substrate) 11 provided with the second sealing material 15 by the seal screen printing method in the same manner as described above.
前記第１シール材１４と第２シール材１５に用いるシー
ル材は、エポキシ樹脂、例えば、エピクロルヒドリンと
ビスフェノールＡを反応させたエポキシ初期縮合物を生
成させた主剤に、アミン類等の硬化剤を一定量加え、更
に、フィラーとなるアルミナ粉末を添加し、第１シール
材はエポキシ樹脂に対し５〜１０重量パーセンＩ・のフ
ィラーを添加し、他方、第２シール材には、エポキシ樹
脂に対し２０〜３０重量パーセントのフィラーを添加し
である。The sealing materials used for the first sealing material 14 and the second sealing material 15 are made by adding a curing agent such as amines to a base material made of an epoxy resin, for example, an epoxy initial condensate produced by reacting epichlorohydrin and bisphenol A. In addition, alumina powder to serve as a filler is added to the first sealing material, and the filler is added to the epoxy resin in an amount of 5 to 10% by weight, while the second sealing material is added in an amount of 20% by weight to the epoxy resin. -30 weight percent filler added.
１６は内部ギャップ材である。16 is an internal gap material.
このシール材の調合によって形成されたシール材層のフ
ィラーは、無機性オーバコート材１３の設けられている
下基板１１及び有機性オーハコ−１〜材１２が設けられ
ている上基板１０に対し、シール材層の膨張係数を各々
のオーバコート材に近づけ、膨張係数の小さい無機性オ
ーバコート材１３と膨張係数の大きい有機性オーバコー
ト材１２との間の熱変形応力の緩和効果を持たせ、シー
ル材層と基板の接着界面に発生する剥離を防止し、また
、フィラーを添加することでシール材層に浸入する水分
のリークパスを長くする効果かある。The filler of the sealant layer formed by blending the sealant is applied to the lower substrate 11 on which the inorganic overcoat material 13 is provided and the upper substrate 10 on which the organic overcoat materials 1 to 12 are provided. The coefficient of expansion of the sealing material layer is brought close to that of each overcoat material to have the effect of alleviating thermal deformation stress between the inorganic overcoat material 13 having a small coefficient of expansion and the organic overcoat material 12 having a high coefficient of expansion, This has the effect of preventing peeling that occurs at the adhesive interface between the sealing material layer and the substrate, and lengthening the leakage path for moisture that enters the sealing material layer by adding a filler.
次に第１図（ｂ）に示すように、下基板１１の第２シー
ル材１５に、上基板１０の第１シール材１４を位置合せ
て重ね合せる。Next, as shown in FIG. 1(b), the first sealing material 14 of the upper substrate 10 is aligned and overlapped with the second sealing material 15 of the lower substrate 11.
次いで、第１図（Ｃ）に示すように、上基板１０と下基
板１１とを圧着焼成して、第１シール材屑１７と第２シ
ール材層１８との２層からなる液晶セルが形成できた。Next, as shown in FIG. 1C, the upper substrate 10 and the lower substrate 11 are bonded and fired to form a liquid crystal cell consisting of two layers, the first sealing material scrap 17 and the second sealing material layer 18. did it.
（実施例２）
実施例２として、エポキシ樹脂に添加するカップリンク
剤は、例えば、シランカップリング剤Ａ Ｐ−４００を
用いて、第１シール材のエポキシ樹脂に対し、シソプロ
ピルアルコール（ＩＰＡ）で０．０２５容積パーセント
に希釈したＡ Ｐ−４００を２．０重量パーセン１〜添
加し、他方、第２シール材には、エポキシ樹脂に対し、
ＩＰＡで０．０５容積パーセントに希釈したＡ Ｐ−４
００を２．０重量パーセント添加したシール材を配置し
、上下基板を圧着焼成して、第１シール材層と第２シー
ル材層との特性の異なる２層からなる液晶セルが形成で
きた。(Example 2) As Example 2, the coupling agent added to the epoxy resin is, for example, silane coupling agent A P-400, and periopropyl alcohol (IPA) is added to the epoxy resin of the first sealing material. 2.0 weight percent of AP-400 diluted to 0.025 volume percent with
AP-4 diluted to 0.05 volume percent with IPA
A sealing material containing 2.0 weight percent of 00 was placed, and the upper and lower substrates were pressed together and fired to form a liquid crystal cell consisting of two layers, the first sealing material layer and the second sealing material layer, each having different properties.
このシール材の調合によって形成されたシール材層のカ
ップリング剤は、有機性オーバコー１へ材と無機性オー
ハコ−１〜材に対し、各々のシール材層か適性な接着力
を持つよう改善できる効果かある。The coupling agent of the sealing material layer formed by blending this sealing material can be improved so that each sealing material layer has appropriate adhesion to the organic overcoat material and the inorganic overcoat material. It's effective.
以上説明したように本発明は２層からなるシール材層を
有する液晶セル内に液晶材を注入封止することで製造で
きるため、３００１−ＩｒＳ以上の電圧印加エージング
と耐湿テス１−を行っても表示ムラの発生は皆無となり
、シール材層の接着力の向上と耐湿特性を著しく改善す
る効果が得られた。As explained above, the present invention can be manufactured by injecting and sealing a liquid crystal material into a liquid crystal cell having a two-layer sealing material layer. There was no occurrence of display unevenness, and the adhesive strength of the sealing material layer was improved and the moisture resistance properties were significantly improved.
従って、本発明の液晶表示パネルの製造方法によって製
造した液晶表示パネルは、電気光学特性が優れているた
め、表示品位の良いデイスプレィを提供できる。Therefore, the liquid crystal display panel manufactured by the method for manufacturing a liquid crystal display panel of the present invention has excellent electro-optic characteristics, and thus can provide a display with good display quality.
第１図（ａ） 、 （ｂ） 、 （ｃ）は本発明の実施
例に係る液晶表示パネルの製造方法を工程順に示す断面
図、第２図は従来法による液晶表示パネルの断面図であ
る。
１・・・上基板 ２・・・下基板３・・・有
機性オーバコート材
４・・・無機性オーハコ−１〜材
５・・・シール材層 ６・・・内部ギャップ材１
０・・・」二基板 １１・・・下塾板１２・
・・有機性オーハコ−１−材
１３・・・無機性オーバコート材
１４・・・第１シール材 １５・・・第２シール材
１６・・・内部ギャップ材 １７・・・第１シール材
層１８・・・第２シール材層FIGS. 1(a), (b), and (c) are cross-sectional views showing the manufacturing method of a liquid crystal display panel according to an embodiment of the present invention in order of steps, and FIG. 2 is a cross-sectional view of a liquid crystal display panel according to a conventional method. . DESCRIPTION OF SYMBOLS 1... Upper substrate 2... Lower substrate 3... Organic overcoat material 4... Inorganic overcoat material 1 to material 5... Seal material layer 6... Internal gap material 1
0..." 2 boards 11... Lower school board 12.
...Organic OHAKO-1-material 13...Inorganic overcoat material 14...First sealing material 15...Second sealing material 16...Internal gap material 17...First sealing material layer 18...Second sealing material layer
Claims (2)
枚の透明電極基板を接合一体化して形成した液晶セルの
空隙内に液晶材を注入してなる液晶表示パネルの製造方
法であって、 周囲を枠状に囲繞するシール材を上部透明電極基板と下
部透明電極基板に分割して配置し、両シール材を重ね合
せて２枚の透明電極基板を接合することを特徴とする液
晶表示パネルの製造方法。(1) Upper and lower 2
A method for manufacturing a liquid crystal display panel in which a liquid crystal material is injected into the gap of a liquid crystal cell formed by bonding and integrating two transparent electrode substrates, the method comprising: a sealing material surrounding the upper transparent electrode substrate in a frame shape; A method for manufacturing a liquid crystal display panel, which comprises disposing the lower transparent electrode substrate in a divided manner, and bonding the two transparent electrode substrates by overlapping both sealing materials.
配置した前記シール材は、各々特性の異なるシール材を
用いることを特徴とする請求項第（１）項に記載の液晶
表示パネルの製造方法。(2) The liquid crystal display panel according to claim (1), wherein the sealing material arranged separately into an upper transparent electrode substrate and a lower transparent electrode substrate is a sealing material having different characteristics. Production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8875690A JPH03287232A (en) | 1990-04-03 | 1990-04-03 | Production of liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8875690A JPH03287232A (en) | 1990-04-03 | 1990-04-03 | Production of liquid crystal display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03287232A true JPH03287232A (en) | 1991-12-17 |
Family
ID=13951735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8875690A Pending JPH03287232A (en) | 1990-04-03 | 1990-04-03 | Production of liquid crystal display panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03287232A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5781258A (en) * | 1996-06-13 | 1998-07-14 | Rainbow Displays, Inc. | Assembling and sealing large, hermetic and semi-hermetic, h-tiled, flat-paneled displays |
| US6873391B2 (en) * | 2000-10-23 | 2005-03-29 | Lg. Philips Lcd Co., Ltd. | LCD panel and method for fabricating the same |
| CN106353932A (en) * | 2016-11-07 | 2017-01-25 | 深圳市华星光电技术有限公司 | Jointing method of liquid crystal display panel |
| JPWO2016017191A1 (en) * | 2014-07-31 | 2017-04-27 | Jsr株式会社 | Display element, photosensitive composition and electrowetting display |
| CN113075810A (en) * | 2021-03-24 | 2021-07-06 | 重庆惠科金渝光电科技有限公司 | Display panel and display terminal |
-
1990
- 1990-04-03 JP JP8875690A patent/JPH03287232A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5781258A (en) * | 1996-06-13 | 1998-07-14 | Rainbow Displays, Inc. | Assembling and sealing large, hermetic and semi-hermetic, h-tiled, flat-paneled displays |
| US6873391B2 (en) * | 2000-10-23 | 2005-03-29 | Lg. Philips Lcd Co., Ltd. | LCD panel and method for fabricating the same |
| JPWO2016017191A1 (en) * | 2014-07-31 | 2017-04-27 | Jsr株式会社 | Display element, photosensitive composition and electrowetting display |
| CN106353932A (en) * | 2016-11-07 | 2017-01-25 | 深圳市华星光电技术有限公司 | Jointing method of liquid crystal display panel |
| CN113075810A (en) * | 2021-03-24 | 2021-07-06 | 重庆惠科金渝光电科技有限公司 | Display panel and display terminal |
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