JPH01201624A - Liquid crystal display panel - Google Patents
Liquid crystal display panelInfo
- Publication number
- JPH01201624A JPH01201624A JP2801088A JP2801088A JPH01201624A JP H01201624 A JPH01201624 A JP H01201624A JP 2801088 A JP2801088 A JP 2801088A JP 2801088 A JP2801088 A JP 2801088A JP H01201624 A JPH01201624 A JP H01201624A
- Authority
- JP
- Japan
- Prior art keywords
- spacer material
- substrate
- liquid crystal
- projecting part
- substrates
- 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 34
- 239000000758 substrate Substances 0.000 claims abstract description 60
- 239000000463 material Substances 0.000 claims abstract description 38
- 125000006850 spacer group Chemical group 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000003566 sealing material Substances 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims 1
- 229920001721 polyimide Polymers 0.000 abstract description 20
- 239000009719 polyimide resin Substances 0.000 abstract description 10
- 229920002120 photoresistant polymer Polymers 0.000 abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052581 Si3N4 Inorganic materials 0.000 abstract description 4
- 239000011347 resin Substances 0.000 abstract description 4
- 229920005989 resin Polymers 0.000 abstract description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 abstract description 4
- 238000007664 blowing Methods 0.000 abstract description 2
- 238000005530 etching Methods 0.000 abstract description 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 2
- 238000000059 patterning Methods 0.000 abstract description 2
- 238000005268 plasma chemical vapour deposition Methods 0.000 abstract description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 210000002858 crystal cell Anatomy 0.000 description 4
- 238000007646 gravure printing Methods 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000005540 biological transmission Effects 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
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 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、液晶表示パネルの構造に関するものである。[Detailed description of the invention] [Industrial application field] The present invention relates to the structure of a liquid crystal display panel.
液晶表示パネルは液晶と呼ばれる物質の分子が特定の方
向に配列することを利用し、少なくとも一方が透明な２
枚の基板間にこの液晶を充填させ、電気的に液晶の分子
の配列方向を制御することによって光の透過を制御して
映像を表示している。Liquid crystal display panels utilize the fact that the molecules of a substance called liquid crystal are aligned in a specific direction, and are made of two panels, at least one of which is transparent.
This liquid crystal is filled between two substrates, and by electrically controlling the alignment direction of the liquid crystal molecules, light transmission is controlled and images are displayed.
前述したように液晶表示パネルは２枚の基板を対向させ
て、その空隙内に液晶を充填する構造が最も基本的なも
のでありこの２枚の基板の間隔は一般に数ミクロン−１
０数ミクロン程度の薄いものである。このことは２枚の
基板の間隔をかなり高精度に制御することが良好な表示
特性を得るために必要であり、基板の間隔が小さすぎる
と、表示にかかわる光が対向する基板間で干渉し表示の
色相ムラによる品位の低下を起す。一方、２枚の基板間
隔の大きい部分では、基板間隔に充填された液晶材料の
層に印加される電界強度が相対的に小さくなるために応
答速度が低下し、実用上、表示の切り換えに時間を要す
るという不具合を生じる。As mentioned above, the most basic structure of a liquid crystal display panel is to have two substrates facing each other and fill the gap with liquid crystal, and the gap between these two substrates is generally several microns-1.
It is thin, about a few microns. This means that it is necessary to control the distance between the two substrates with a fairly high degree of precision in order to obtain good display characteristics; if the distance between the two substrates is too small, the light involved in display will interfere between the opposing substrates. The quality of the display deteriorates due to uneven display hue. On the other hand, in areas where there is a large gap between the two substrates, the electric field strength applied to the layer of liquid crystal material filled in the gap between the substrates becomes relatively small, resulting in a decrease in response speed and, in practice, it takes a long time to switch the display. This causes the problem that it requires
従って、全体的には表示が部分的に異なった特性を示す
ことになり、表示にはなはだ不都合な原因となる。従来
よりある公知の液晶表示パネルの構造は、シール材にス
ペーサ材を混合し、液晶層内部にも無作為にスペーサ材
を分散させた液晶表示パネルが提案されている。すなわ
ち、第４図に示すように（説明の便宜上、要部を拡大図
示）所定形状の電極３とポリイミド膜４を形成した下基
板４の周辺部にスペーサ材を混合したシール材を配置（
図示せず）、上基板２にはスペーサ材５を無作為に分散
、その後、下基板ｌに上基板２を載せ圧力をかけて上下
基板２，１をシール材で接着することで液晶セルを形成
していた。Therefore, the display as a whole exhibits partially different characteristics, which causes a great deal of inconvenience to the display. As a structure of a conventionally known liquid crystal display panel, a liquid crystal display panel has been proposed in which a spacer material is mixed with a sealing material and the spacer material is randomly dispersed inside the liquid crystal layer. That is, as shown in FIG. 4 (main parts are shown enlarged for convenience of explanation), a sealing material mixed with a spacer material is placed around the lower substrate 4 on which the electrode 3 of a predetermined shape and the polyimide film 4 are formed (
(not shown), the spacer material 5 is randomly distributed on the upper substrate 2, and then the upper substrate 2 is placed on the lower substrate L, and pressure is applied to bond the upper and lower substrates 2 and 1 with a sealing material to form a liquid crystal cell. was forming.
このような従来の液晶表示パネルは、スペーサ材が固定
されていないために、基板に加えられる外力、すなわち
基板外面に偏光板等の光学素子を貼付けたり、回路基板
を取り付ける際に基板に加わる外力による基板の撓み等
で、液晶材中のスペーサ材が移動し、その移動時に基板
面上のポリイミド膜を損傷して表示キズや電極の断線を
生じる原因となる欠点がある。Since the spacer material is not fixed in such conventional LCD panels, external forces are applied to the substrate, such as when attaching optical elements such as polarizing plates to the outer surface of the substrate or when attaching circuit boards. There is a drawback that the spacer material in the liquid crystal material moves due to the bending of the substrate due to the bending of the substrate, and when the spacer material moves, the polyimide film on the substrate surface is damaged, causing display scratches and electrode disconnection.
上述した従来の液晶表示パネルにおける内部スペーサ材
は、液晶層内部に無作為に、かつ、固定されていないた
めに、基板に外力が加えられると、液晶材中を移動し、
基板面上のポリイミド膜を損傷していたのに対し、本発
明の内部スペーサ材は、電極間に設けた凸状部上に固定
するため、基板面上のポリイミド膜を損傷させることが
無いという相違点を有している。The internal spacer material in the conventional liquid crystal display panel described above is randomly placed inside the liquid crystal layer and is not fixed, so when an external force is applied to the substrate, the internal spacer material moves within the liquid crystal material.
Whereas the polyimide film on the substrate surface was damaged, the internal spacer material of the present invention is fixed on the convex part provided between the electrodes, so it does not damage the polyimide film on the substrate surface. There are differences.
本発明の液晶表示パネルは、多数の電極を形成した２枚
の基板と、この２枚の基板間に充填された液晶と、この
２枚の基板の電極を対向して固着するように形成したシ
ール材を有し、２枚の基板のうち少なくとも一方の基板
の電極間に複数個の凸状部を設け、この凸状部上にスペ
ーサ材を固定し、もってこのスペーサ材によって基板の
間隔を規定している。The liquid crystal display panel of the present invention includes two substrates on which a large number of electrodes are formed, a liquid crystal filled between the two substrates, and the electrodes of the two substrates facing each other and fixed to each other. A sealing material is provided, a plurality of convex portions are provided between the electrodes of at least one of the two substrates, a spacer material is fixed on the convex portions, and the spacer material is used to reduce the distance between the substrates. stipulated.
本発明によれば、スペーサ材は凸状部上に固定されてい
るので、スペーサ材の移動による基板表面を損傷するこ
とがない。According to the present invention, since the spacer material is fixed on the convex portion, the substrate surface is not damaged due to movement of the spacer material.
次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図（ａ）、 （ｂ）は本発明の一実施例による電極
間に設けた矩形凸状部と、この矩形凸出部上にスペーサ
材を固定した基板の模式図であり、第３図は本発明の一
実施例の基板を用いた液晶表示パネルの模式的断面図で
ある。FIGS. 1(a) and 1(b) are schematic diagrams of a rectangular convex portion provided between electrodes according to an embodiment of the present invention, and a substrate on which a spacer material is fixed on the rectangular convex portion. The figure is a schematic cross-sectional view of a liquid crystal display panel using a substrate according to an embodiment of the present invention.
第１図（ａ）に示すように、下基板ｌｌ上にプラズマＣ
ＶＤ法により窒化シリコン膜５５００人を形成し、フォ
トレジスト法でバターニング後エツチングして矩形凸状
部１５を形成する。次にＩＴＯ（酸化インジウムスズ）
膜をアルゴンスパッタ法により５００人形成し、フォト
レジスト法でバターニング後エツチングして電極１３を
形成する。As shown in FIG. 1(a), plasma C is placed on the lower substrate ll.
A silicon nitride film of 5,500 layers is formed by the VD method, patterned by the photoresist method, and then etched to form the rectangular convex portions 15. Next, ITO (indium tin oxide)
A film of 500 layers is formed by an argon sputtering method, patterned by a photoresist method, and then etched to form an electrode 13.
このプロセスにより、ＩＴＯの電極１３間に窒化シリコ
ンの段差５０００人の矩形凸状部１５が形成される。Through this process, rectangular convex portions 15 of silicon nitride having 5000 steps are formed between the ITO electrodes 13.
次いで、第１図（ｂ）に示すように下基板１１上に粘度
４０〜５０ｃ、ｐ、ｓ、のポリイミド樹脂をグラビア印
刷法で印刷後、焼成してポリイミド膜１４を形成、この
ポリイミド膜表面をバフロールでラビングして配向性を
持たせる。その後、矩形凸状部１５上のみに粘度１５０
〜２００ｃ、ｐ、ｓ、のポリイミド樹脂をグラビア印刷
法で印刷圧をコントロールして配置、直ちに、この基板
上にスペーサ材を分散して矩形凸状部上のポリイミド樹
脂１６にスペーサ材１７を付着させ、焼成後、窒素吹き
することで矩形凸状部１５以外に分散したスペーサ材を
除去し、矩形凸状部１５上にスペーサ材１７をポリイミ
ド樹脂１６で固定した基板を形成する。Next, as shown in FIG. 1(b), a polyimide resin having a viscosity of 40 to 50 c, p, and s is printed on the lower substrate 11 using a gravure printing method, and then baked to form a polyimide film 14, and the surface of this polyimide film is Rub with buff roll to give orientation. After that, the viscosity is 150% only on the rectangular convex portion 15.
A polyimide resin of ~200C, P, S is placed by controlling the printing pressure using a gravure printing method, and the spacer material 17 is immediately dispersed on this substrate to attach the spacer material 17 to the polyimide resin 16 on the rectangular convex portion. After firing, the spacer material dispersed in areas other than the rectangular convex portion 15 is removed by nitrogen blowing, and a substrate in which the spacer material 17 is fixed with polyimide resin 16 on the rectangular convex portion 15 is formed.
次に第３図に示すように、上基板１２の周辺部にスペー
サ材を混合したシール材を配置（図示せず）、下基板１
１に載せて圧力をかけ、シール材で上下基板１２．１１
を接着することで液晶セルを形成できた。Next, as shown in FIG. 3, a sealing material mixed with a spacer material is placed around the upper substrate 12 (not shown),
1, apply pressure, and seal the upper and lower substrates 12.11 with sealing material.
A liquid crystal cell could be formed by gluing the .
この液晶セルに従来の実施方法と同様に液晶注入装置内
に配置して液晶を充填後、液晶セルの注入孔を樹脂で封
止することで本発明の一実施例の液晶表示パネルは製作
できた。A liquid crystal display panel according to an embodiment of the present invention can be manufactured by placing this liquid crystal cell in a liquid crystal injection device and filling it with liquid crystal as in the conventional method, and then sealing the injection hole of the liquid crystal cell with resin. Ta.
第２図は本発明の他の実施例の電極間に設けた凹形凸状
部を形成した基板の模式的断面図である。FIG. 2 is a schematic cross-sectional view of a substrate in which concave and convex portions are formed between electrodes according to another embodiment of the present invention.
第２図に示すように、下基板１１上にプラズマＣＶＤ法
により窒化シリコン膜５５００Ａを形成シ、フォトレジ
スト法でパターニング後エツーＦ−７グして矩形凸状部
を形成する。次にＩＴＯ膜をアルゴンスパッタ法により
５００人形成し、フォトレジスト法でパターニングする
時、矩形凸状部の上が凹形となる凸状部２５を形成する
と同時に、ＩＴＯ膜で電極１３を順次エツチングして形
成する。次いで、本発明の一実施例の第１図（ｂ）と同
様にしてスペーサ材を凹形凸状部上にポリイミド樹脂で
固定した基板を形成する。As shown in FIG. 2, a silicon nitride film 5500A is formed on the lower substrate 11 by the plasma CVD method, and after patterning by the photoresist method, etching is performed to form a rectangular convex portion. Next, 500 ITO films are formed by the argon sputtering method, and when patterned by the photoresist method, the convex portions 25 having a concave shape at the top of the rectangular convex portions are formed, and at the same time, the electrodes 13 are sequentially etched using the ITO film. and form it. Next, a substrate is formed by fixing the spacer material on the concave and convex portions with polyimide resin in the same manner as shown in FIG. 1(b) of an embodiment of the present invention.
この時、凹形凸状部は、グラビア印刷法でポリイミド樹
脂を配置する時、樹脂流れを防止し、また、基板に外力
が加えられても、スペーサ材が移動することはない。At this time, the concave and convex portions prevent the resin from flowing when the polyimide resin is placed using the gravure printing method, and the spacer material does not move even if an external force is applied to the substrate.
以上説明したように本発明によれば、液晶層内部に分散
させるスペーサ材は、基板の電極間に設けた凸状部上に
樹脂で固定するため、基板の間隔をかなり高精度に制御
することが出来、また加えられる外力による基板の撓み
等でも液晶層内部のスペーサ材の移動を無くすることが
出来ることから、基板間隔の均一性の改善と基板面上の
ポリイミド膜を損傷する表示面キズや電極の断線等の欠
陥を改善できる効果がある。従って、製作した液晶表示
パネルは、表示ムラが無く、配線の信頼性が高いことか
ら、表示品位の優れたものが提供できる。As explained above, according to the present invention, the spacer material dispersed inside the liquid crystal layer is fixed with resin on the convex portion provided between the electrodes of the substrates, so that the spacing between the substrates can be controlled with high precision. This also eliminates movement of the spacer material inside the liquid crystal layer even when the substrate is bent due to external force applied, improving the uniformity of the substrate spacing and preventing scratches on the display surface that would damage the polyimide film on the substrate surface. This has the effect of improving defects such as wire breakage and electrode disconnection. Therefore, the manufactured liquid crystal display panel has no display unevenness and has high wiring reliability, so that it can provide an excellent display quality.
第１図（ａ）、 （ｂ）は本発明の一実施例による基板
を製造工程順に示した断面図、第２図は本発明の他の実
施例による基板の断面図、第３図は、本発明の一実施例
による基板を用いた液晶表示パネルの断面図、第４図は
従来の液晶表示パネルの断面図である。
１・・・・・・下基板、２・・・・・・上基板、３・・
・・・・電極、４１０．・・・ポリイミド膜、５・・・
・・・スペーサ材、１１・・・・・・下基板、１２・・
・・・・上基板、１３・・・・・・電極、１４・・・・
・・ポリイミド膜、１５．２５・・・・・・矩形凸状部
、１６・・・・・・ポリイミド樹脂、１７・・・・・・
スペーサ材。
代理人 弁理士 内 原 音
荀 １ 凹
′ 箔 ２ 圀
第 ３ 田
χ ４ 旧FIGS. 1(a) and 1(b) are cross-sectional views showing a substrate according to an embodiment of the present invention in the order of manufacturing steps, FIG. 2 is a cross-sectional view of a substrate according to another embodiment of the present invention, and FIG. FIG. 4 is a cross-sectional view of a liquid crystal display panel using a substrate according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view of a conventional liquid crystal display panel. 1...Lower board, 2...Upper board, 3...
...electrode, 410. ...Polyimide film, 5...
...Spacer material, 11...Lower substrate, 12...
... Upper substrate, 13 ... Electrode, 14 ...
...Polyimide film, 15.25...Rectangular convex portion, 16...Polyimide resin, 17...
Spacer material. Agent Patent Attorney Uchihara Onsho 1 Concave' Haku 2 Country 3 Field χ 4 Old
Claims (1)
に充填した液晶材料と、この２枚の基板の電極を対向し
て固着するように形成したシール材とを含み、前記２枚
の基板のうち少なくとも一方の基板には、前記複数の電
極間に設けた複数個の凸状部と、この凸状部上に固定さ
れたスペーサ材とが形成されており、このスペーサ材に
よって前記２枚の基板の間隔が規定されていることを特
徴とする液晶表示パネル。The method includes two substrates on which a plurality of electrodes are formed, a liquid crystal material filled between the two substrates, and a sealing material formed to face and fix the electrodes of the two substrates, A plurality of convex portions provided between the plurality of electrodes and a spacer material fixed on the convex portions are formed on at least one of the substrates, and the spacer material A liquid crystal display panel characterized in that an interval between the two substrates is regulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2801088A JPH01201624A (en) | 1988-02-08 | 1988-02-08 | Liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2801088A JPH01201624A (en) | 1988-02-08 | 1988-02-08 | Liquid crystal display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01201624A true JPH01201624A (en) | 1989-08-14 |
Family
ID=12236815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2801088A Pending JPH01201624A (en) | 1988-02-08 | 1988-02-08 | Liquid crystal display panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01201624A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004145084A (en) * | 2002-10-25 | 2004-05-20 | Fujitsu Ltd | Liquid crystal panel and its manufacturing method |
| JP2006343423A (en) * | 2005-06-07 | 2006-12-21 | Sekisui Chem Co Ltd | Method for manufacturing liquid crystal display device |
| JP2007011335A (en) * | 2005-06-30 | 2007-01-18 | Lg Phillips Lcd Co Ltd | Liquid crystal display device and method of manufacturing same |
| JP2008116880A (en) * | 2006-11-08 | 2008-05-22 | Toppan Printing Co Ltd | Method for forming spacer bead on color filter for liquid crystal display device and method for manufacturing liquid crystal display element |
-
1988
- 1988-02-08 JP JP2801088A patent/JPH01201624A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004145084A (en) * | 2002-10-25 | 2004-05-20 | Fujitsu Ltd | Liquid crystal panel and its manufacturing method |
| JP2006343423A (en) * | 2005-06-07 | 2006-12-21 | Sekisui Chem Co Ltd | Method for manufacturing liquid crystal display device |
| JP2007011335A (en) * | 2005-06-30 | 2007-01-18 | Lg Phillips Lcd Co Ltd | Liquid crystal display device and method of manufacturing same |
| JP4546941B2 (en) * | 2005-06-30 | 2010-09-22 | エルジー ディスプレイ カンパニー リミテッド | Liquid crystal display device and manufacturing method thereof |
| JP2008116880A (en) * | 2006-11-08 | 2008-05-22 | Toppan Printing Co Ltd | Method for forming spacer bead on color filter for liquid crystal display device and method for manufacturing liquid crystal display element |
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