JPS6048745B2 - liquid crystal display device - Google Patents
liquid crystal display deviceInfo
- Publication number
- JPS6048745B2 JPS6048745B2 JP22308082A JP22308082A JPS6048745B2 JP S6048745 B2 JPS6048745 B2 JP S6048745B2 JP 22308082 A JP22308082 A JP 22308082A JP 22308082 A JP22308082 A JP 22308082A JP S6048745 B2 JPS6048745 B2 JP S6048745B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- display device
- insulating film
- transparent insulating
- 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
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- YADSGOSSYOOKMP-UHFFFAOYSA-N dioxolead Chemical compound O=[Pb]=O YADSGOSSYOOKMP-UHFFFAOYSA-N 0.000 claims description 18
- 239000000758 substrate Substances 0.000 claims description 10
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- 235000012239 silicon dioxide Nutrition 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- 239000004988 Nematic liquid crystal Substances 0.000 description 6
- 210000004027 cell Anatomy 0.000 description 6
- 239000002562 thickening agent Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- 150000003961 organosilicon compounds Chemical class 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 210000002858 crystal cell Anatomy 0.000 description 3
- 150000002611 lead compounds Chemical class 0.000 description 3
- YIWUKEYIRIRTPP-UHFFFAOYSA-N 2-ethylhexan-1-ol Chemical compound CCCCC(CC)CO YIWUKEYIRIRTPP-UHFFFAOYSA-N 0.000 description 2
- NIQCNGHVCWTJSM-UHFFFAOYSA-N Dimethyl phthalate Chemical compound COC(=O)C1=CC=CC=C1C(=O)OC NIQCNGHVCWTJSM-UHFFFAOYSA-N 0.000 description 2
- QUKGYYKBILRGFE-UHFFFAOYSA-N benzyl acetate Chemical compound CC(=O)OCC1=CC=CC=C1 QUKGYYKBILRGFE-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229920006332 epoxy adhesive Polymers 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910003437 indium oxide Inorganic materials 0.000 description 2
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 2
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 2
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- -1 terpineonol Chemical class 0.000 description 2
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229940007550 benzyl acetate Drugs 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001045 blue dye Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 230000003098 cholesteric effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 description 1
- FBSAITBEAPNWJG-UHFFFAOYSA-N dimethyl phthalate Natural products CC(=O)OC1=CC=CC=C1OC(C)=O FBSAITBEAPNWJG-UHFFFAOYSA-N 0.000 description 1
- 229960001826 dimethylphthalate Drugs 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- WOXXJEVNDJOOLV-UHFFFAOYSA-N ethenyl-tris(2-methoxyethoxy)silane Chemical compound COCCO[Si](OCCOC)(OCCOC)C=C WOXXJEVNDJOOLV-UHFFFAOYSA-N 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- WVDDGKGOMKODPV-ZQBYOMGUSA-N phenyl(114C)methanol Chemical compound O[14CH2]C1=CC=CC=C1 WVDDGKGOMKODPV-ZQBYOMGUSA-N 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000002834 transmittance 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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Description
【発明の詳細な説明】
本発明は、絶縁基板上に透明電極、透明絶縁膜ならびに
配向処理膜を順次形成した液晶表示装置に係り、特にそ
れの透明絶縁膜の材質に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid crystal display device in which a transparent electrode, a transparent insulating film, and an alignment film are sequentially formed on an insulating substrate, and particularly relates to the material of the transparent insulating film.
従来この種の透明絶縁膜として二酸化ケイ素の単一層が
用いられていたが、この絶縁膜を用いたものは特に耐熱
試験において比較的早い時期にデイスクリネーシヨンが
発生してしまい、耐用寿命に問題がある。Conventionally, a single layer of silicon dioxide has been used as this type of transparent insulating film, but products using this insulating film suffer from disclination at a relatively early stage, especially in heat resistance tests, resulting in problems with service life. There is.
本発明の目的は、このような従来技術の欠点を解消し、
特性の優れた液晶表示装置を提供するにある。The purpose of the present invention is to eliminate such drawbacks of the prior art,
An object of the present invention is to provide a liquid crystal display device with excellent characteristics.
この目的を達成するため、本発明は、二酸化鉛と二酸化
ケイ素の均一な混合物からなる透明絶縁膜を用いたこと
を特徴とするものである。In order to achieve this object, the present invention is characterized by using a transparent insulating film made of a uniform mixture of lead dioxide and silicon dioxide.
二酸化鉛− 酸化ケイ素の絶縁膜は、焼成によつて二酸
化鉛− 酸化ケイ素の被膜を形成する化合物で有機溶剤
に可溶な有機鉛化合物ならびに有機ケイ素化合物と、増
粘剤と、これら有機鉛化合物、有機ケイ素化合物ならび
に増粘剤を溶解する有機溶剤とを混練したペーストを、
例えはスクリーン印刷などによつて印刷、塗布して予備
乾燥したのち、４００゜Ｃ以上の温度て焼成することに
よつて得られる。A lead dioxide-silicon oxide insulating film is a compound that forms a lead dioxide-silicon oxide film by firing, and consists of an organic lead compound and an organic silicon compound that are soluble in an organic solvent, a thickener, and these organic lead compounds. , a paste made by kneading an organosilicon compound and an organic solvent that dissolves a thickener,
For example, it can be obtained by printing and coating by screen printing or the like, pre-drying, and then firing at a temperature of 400°C or higher.
本発明に用いられる前記有機鉛化合物としては、オクチ
ル酸鉛が好適である。As the organic lead compound used in the present invention, lead octylate is suitable.
また本発明に用いられる前記有機ケイ素化合物としては
、ビニルトリス（２−メトキシエトキシ）シランが好適
である。Furthermore, vinyltris(2-methoxyethoxy)silane is suitable as the organosilicon compound used in the present invention.
さらに本発明に用いられる増粘剤としては、ニトロセル
ロースやエチルセルロースなどのセルロース化合物が好
適である。Further, as the thickener used in the present invention, cellulose compounds such as nitrocellulose and ethylcellulose are suitable.
前記有機鉛化合物、有機ケイ素化合物ならびに増粘剤を
溶解する有機溶剤としては、ターピネオノール、２−エ
チルヘキサノール、ベンジルアルコールなどの高沸点ア
ルコール類、ベンジルアセテート、ジメチルフタレート
などの高沸点エステル類、カルビトール、ブチルカルビ
トール、ブチルセロソルブなどの高沸点アルコールエー
テル類などが用いられる。Examples of the organic solvent for dissolving the organolead compound, organosilicon compound, and thickener include high-boiling point alcohols such as terpineonol, 2-ethylhexanol, and benzyl alcohol, high-boiling point esters such as benzyl acetate and dimethyl phthalate, and carbitol. , butyl carbitol, butyl cellosolve, and other high-boiling point alcohol ethers are used.
二酸化鉛一ニ酸化ケイ素の均一混合物からなる被膜は、
光透過率が９６〜９９％と高く、膜強度が大で、比較的
高い絶縁性を有している。A coating consisting of a homogeneous mixture of lead dioxide and silicon monoxide is
It has a high light transmittance of 96 to 99%, high film strength, and relatively high insulation.
また、ペースト中の有機鉛化合物と有機ケイ素化合物の
トータル量を適当にコントロールすることにより、４０
００Ａ以下の被膜を自由に形成することができる。次に
本発明の実施例について説明する。In addition, by appropriately controlling the total amount of organolead compounds and organosilicon compounds in the paste, 40%
A coating of 00A or less can be freely formed. Next, examples of the present invention will be described.
実施例１
２枚のガラス基板上に、スパッタリングにより酸化イン
ジウムの透明電極を形成する。Example 1 Transparent electrodes of indium oxide are formed on two glass substrates by sputtering.
２５０メッシュでレジスト厚１０ｐｗＬのステンレスネ
ットからなるスクリーン版を用いて、後記組成表に示す
ペーストを前記透明電極の上に塗布し、１５０℃で１５
分間予備乾燥したのち、５００℃て３０分間焼成するこ
とによりニ酸化鉛と二酸化ケイ素の均一な混合物からな
る透明絶縁膜が形成される。Using a screen plate made of stainless steel net with 250 mesh and a resist thickness of 10 pwL, the paste shown in the composition table below was applied onto the transparent electrode, and the paste was heated at 150°C for 15 minutes.
After pre-drying for a minute, baking is performed at 500° C. for 30 minutes to form a transparent insulating film made of a uniform mixture of lead dioxide and silicon dioxide.
形成された透明絶縁膜の上に水平配向剤（東レシリコー
ン社製 製品名ＳＨ６Ｏ４Ｏ）を塗布して配Ｊ向処理膜
を形成し、上、下の基板において互に直交する方向にラ
ピングする。A horizontal alignment agent (manufactured by Toray Silicone Co., Ltd., product name: SH6O4O) is applied on the formed transparent insulating film to form a J-alignment treatment film, and the upper and lower substrates are lapped in mutually orthogonal directions.
そして２枚の基板をエポキシ系接着剤を用いて、セルギ
ャップが１０μｍになるように貼り合わせる。誘電異方
性が正のネマティック液晶（チッソ社製 製品名ＧＲ−
６１）を前記液晶セルに封入し、セルの上、下にそれぞ
れ前記基板のラピング方向と偏光軸が平行になるように
偏光板を貼りつけてツイストネマティック形液晶表示装
置をつくる。Then, the two substrates are bonded together using an epoxy adhesive so that the cell gap is 10 μm. Nematic liquid crystal with positive dielectric anisotropy (manufactured by Chisso, product name: GR-
61) is sealed in the liquid crystal cell, and polarizing plates are attached above and below the cell so that the wrapping direction of the substrate and the polarization axis are parallel to each other, thereby producing a twisted nematic liquid crystal display device.
実施例２Ｊ実施例１と同様に２枚のガラス基板上にそれ
ぞれ、酸化インジウムからなる透明電極、二酸化鉛と二
酸化ケイ素の均一混合物からなる透明絶縁膜を順次形成
する。Example 2J As in Example 1, a transparent electrode made of indium oxide and a transparent insulating film made of a uniform mixture of lead dioxide and silicon dioxide are sequentially formed on two glass substrates.
そして透明絶縁膜の上にクロム錯体からなる垂直配向剤
を塗布して配向処理膜を形成し、この２枚の基板をセル
ギャップが１０μ几になるようにエポキシ系接着剤で貼
り合わせる。青色染料を１重量％、コレステリツク液晶
であるコレステリツクエルケートを”重量％それぞれ添
加した誘電異方性が負のネマティック液晶を前記液晶セ
ルに封入して、ポジ表示の相転移ゲストホスト形液晶表
示装置をつくる。前記実施例１によつて得られた本発明
のツイストネマティック形液晶表示装置と、二酸化ケイ
素の単一層からなる透明絶縁膜を用い、他は実施例１と
同一の条件で組立てた従来のツイストネマテツク形液晶
表示装置とをそれぞれ１００℃の耐熱試験を行ない、偏
光顕微鏡により平行ニコル状態、無印加状態で液晶層の
配向状態を観察した。Then, a vertical alignment agent made of a chromium complex is applied onto the transparent insulating film to form an alignment treatment film, and the two substrates are bonded together using an epoxy adhesive so that the cell gap is 10 μm. A nematic liquid crystal with negative dielectric anisotropy to which 1% by weight of blue dye and 1% by weight of cholesteric liquid crystal cholesteric quercate have been added is sealed in the liquid crystal cell to produce a phase change guest-host type liquid crystal display with positive display. A device was manufactured using the twisted nematic liquid crystal display device of the present invention obtained in Example 1 and a transparent insulating film consisting of a single layer of silicon dioxide, but otherwise assembled under the same conditions as in Example 1. A conventional twisted nematic liquid crystal display device and a conventional twisted nematic liquid crystal display device were each subjected to a heat resistance test at 100° C., and the alignment state of the liquid crystal layer was observed using a polarizing microscope in a parallel Nicol state and in an unapplied state.
その結果、従来のものは耐熱試験開始後３６０時間後に
第１図に示すように固定デイスクリネーシヨンＡが発生
した。このデイスクリネーシヨンは、液晶分子を配向さ
せるため絶縁膜表面の配向力が劣化したことによつて発
生するもので、時間の経過とともにその数は増える。一
方、本発明に係る液晶表示装置は耐熱試験開始後１１０
時間後に第２図に示すように固定デイスクリネーシヨン
Ａの発生が確認できた。なお、第１図および第２図は、
実物５晧に拡大したものである。二酸化鉛と二酸化ケイ
素の混合物からなる透明絶縁膜中における二酸化鉛の含
有率は約２０〜８踵量％、好ましくは４０〜叩重量％で
ある。As a result, in the conventional case, fixed disclination A occurred as shown in FIG. 1 360 hours after the start of the heat resistance test. This disclination occurs due to the deterioration of the alignment force on the surface of the insulating film for aligning liquid crystal molecules, and the number of disclinations increases with the passage of time. On the other hand, the liquid crystal display device according to the present invention has a temperature of 110% after the start of the heat resistance test.
After a period of time, the occurrence of fixed disk formation A was confirmed as shown in FIG. In addition, Fig. 1 and Fig. 2 are as follows.
This is an enlarged version of the actual product. The content of lead dioxide in the transparent insulating film made of a mixture of lead dioxide and silicon dioxide is approximately 20 to 8% by weight, preferably 40 to 8% by weight.
オクチル酸鉛と増粘剤とを有機溶剤に溶解した絶縁被膜
形成用ペーストを絶縁基板上に塗布し、焼成して二酸化
鉛の透明絶縁被膜を形成したセル基板を作る。An insulating film forming paste prepared by dissolving lead octylate and a thickener in an organic solvent is applied onto an insulating substrate and fired to produce a cell substrate on which a transparent insulating film of lead dioxide is formed.
これを用いて組立てたＴＮ液晶セルは、初期配向性が極
めて悪く、第１図に示した二酸化ケイ素からなる絶縁被
膜のものよりもさらにデイスクリネーシヨンの発生が多
い。本発明は前述のように二酸化鉛と二酸化ケイ素の均
一混合物からなる透明絶縁被膜を用いることにより、高
温下においても性能的に優れた信頼性の高い液晶表示装
置が提供できる。A TN liquid crystal cell assembled using this cell has extremely poor initial alignment, and more discrepancies occur than the cell with an insulating coating made of silicon dioxide shown in FIG. As described above, the present invention uses a transparent insulating film made of a uniform mixture of lead dioxide and silicon dioxide, thereby providing a highly reliable liquid crystal display device with excellent performance even at high temperatures.
第１図は従来の液晶表示装置のデイスクリネーシヨンの
発生状態を示す拡大図、第２図は本発明の実施例に係る
液晶表示装置のデイスクリネーシヨンの発生状態を示す
拡大図である。FIG. 1 is an enlarged view showing the state in which disc lination occurs in a conventional liquid crystal display device, and FIG. 2 is an enlarged view illustrating the state in which disc lination occurs in a liquid crystal display device according to an embodiment of the present invention.
Claims (1)
理膜が順次形成されている液晶表示装置において、前記
透明絶縁膜が二酸化鉛と二酸化ケイ素の混合物で構成さ
れていることを特徴とする液晶表示装置。1. A liquid crystal display device in which a transparent electrode, a transparent insulating film, and an alignment film are sequentially formed on an insulating substrate, wherein the transparent insulating film is made of a mixture of lead dioxide and silicon dioxide. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22308082A JPS6048745B2 (en) | 1982-12-21 | 1982-12-21 | liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22308082A JPS6048745B2 (en) | 1982-12-21 | 1982-12-21 | liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59113416A JPS59113416A (en) | 1984-06-30 |
| JPS6048745B2 true JPS6048745B2 (en) | 1985-10-29 |
Family
ID=16792520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22308082A Expired JPS6048745B2 (en) | 1982-12-21 | 1982-12-21 | liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6048745B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62234121A (en) * | 1986-04-04 | 1987-10-14 | Stanley Electric Co Ltd | Process for forming liquid cell |
-
1982
- 1982-12-21 JP JP22308082A patent/JPS6048745B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59113416A (en) | 1984-06-30 |
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