JPH0136632B2 - - Google Patents
Info
- Publication number
- JPH0136632B2 JPH0136632B2 JP56158620A JP15862081A JPH0136632B2 JP H0136632 B2 JPH0136632 B2 JP H0136632B2 JP 56158620 A JP56158620 A JP 56158620A JP 15862081 A JP15862081 A JP 15862081A JP H0136632 B2 JPH0136632 B2 JP H0136632B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal cell
- white
- fine powder
- film
- 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 claims description 29
- 239000000758 substrate Substances 0.000 claims description 23
- 210000002858 crystal cell Anatomy 0.000 claims description 21
- 239000000843 powder Substances 0.000 claims description 11
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 5
- 150000002736 metal compounds Chemical class 0.000 claims description 2
- 238000000034 method Methods 0.000 description 11
- 239000011521 glass Substances 0.000 description 8
- 239000000975 dye Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 description 2
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000000020 Nitrocellulose Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 229920001220 nitrocellulos Polymers 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 150000002902 organometallic compounds Chemical class 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- XBIUWALDKXACEA-UHFFFAOYSA-N 3-[bis(2,4-dioxopentan-3-yl)alumanyl]pentane-2,4-dione Chemical compound CC(=O)C(C(C)=O)[Al](C(C(C)=O)C(C)=O)C(C(C)=O)C(C)=O XBIUWALDKXACEA-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
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920006332 epoxy adhesive Polymers 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
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- SKWCWFYBFZIXHE-UHFFFAOYSA-K indium acetylacetonate Chemical compound CC(=O)C=C(C)O[In](OC(C)=CC(C)=O)OC(C)=CC(C)=O SKWCWFYBFZIXHE-UHFFFAOYSA-K 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal (AREA)
Description
【発明の詳細な説明】
本発明は、２枚のガラス基板を貼り合わした液
晶セルのうち、一方の基板内面に白色な膜でコー
トし反射面として利用したカラー液晶セルに関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a color liquid crystal cell in which two glass substrates are bonded together, and the inner surface of one of the substrates is coated with a white film and used as a reflective surface.
従来カラー液晶セルにおいて、色素及び光学活
性物質を含んだ液晶を使う相転移型では、反射型
で見る方が透過型で使うよりも視認性に優れかつ
スペースをとらない事から、セルの裏側に、白色
板を貼りつけ反射板としていた。 In conventional color liquid crystal cells, the phase change type that uses liquid crystal containing dyes and optically active substances has better visibility and takes up less space when viewed with a reflective type than with a transmissive type, so A white plate was pasted on to serve as a reflector.
第１図はこの液晶セルの縦断面図で、図中の１
は配向処理膜、２は透明電極、３は絶縁基板、４
は液晶、５は色素、７は反射板、８はシール剤で
ある。しかしこの方法では見る者にとつて表示パ
ターンが液晶セルの下基板の裏側の面で反射さ
れ、像が部分的に２重に見え、輪郭がぼけ表示品
位を落していた。 Figure 1 is a vertical cross-sectional view of this liquid crystal cell.
2 is an alignment treatment film, 2 is a transparent electrode, 3 is an insulating substrate, 4
5 is a liquid crystal, 5 is a pigment, 7 is a reflective plate, and 8 is a sealant. However, with this method, the display pattern is reflected by the back surface of the lower substrate of the liquid crystal cell to the viewer, resulting in a partially double image, blurring the outline, and degrading the display quality.
この欠点を解消する為下基板として不透明ガ
ラスを使う方法。下基板の内側に金属酸化物を
蒸着する方法。白色の散乱板をセルの内側に接
着剤により貼りつける方法などが提案されてい
る。しかし、前記のの方法は不透明ガラスの上
に透明電極膜と絶縁膜をコートした場合、ガラス
板とそれらの膜の膨張率の差により膜にひび割れ
が生じる。前記の方法では、完全に不透明な白
色膜が得られない。前記の方法では、接着剤使
用の為、その上に蒸着電極、絶縁膜をコートする
条件に工程上の制約が生じ、信頼性の高い液晶セ
ルが作れないという問題がある。 To overcome this drawback, there is a method of using opaque glass as the lower substrate. A method of depositing metal oxides on the inside of the lower substrate. A method has been proposed in which a white scattering plate is attached to the inside of the cell using adhesive. However, in the above method, when a transparent electrode film and an insulating film are coated on opaque glass, cracks occur in the film due to the difference in expansion coefficient between the glass plate and those films. The method described above does not yield a completely opaque white film. In the above method, since an adhesive is used, there are process restrictions on the conditions for coating the vapor-deposited electrode and the insulating film thereon, and there is a problem that a highly reliable liquid crystal cell cannot be produced.
本発明の目的は、このような従来技術の欠点を
解消し、安価で視認性の高いカラー液晶セルを提
供するにある。 An object of the present invention is to eliminate the drawbacks of the prior art and provide a color liquid crystal cell that is inexpensive and has high visibility.
この目的を達成するため、本発明は、色素及び
光学活性物質を含んだ液晶を使う所謂相転移型カ
ラー液晶セルにおいて、一方の絶縁基板上に有機
金属化合物と白色微粉末との混合ペーストを塗布
し焼成して得られた白色の膜を反射膜として使用
することを特徴とするものである。 In order to achieve this objective, the present invention applies a mixed paste of an organometallic compound and white fine powder on one insulating substrate in a so-called phase change color liquid crystal cell that uses a liquid crystal containing a dye and an optically active substance. This method is characterized in that a white film obtained by baking is used as a reflective film.
さらに具体的に詳述するならば、ニトロセルロ
ースなどの増粘剤に、エタノール、ブチルカルビ
トール、ブチルセルソルブなどの有機溶媒、さら
にアルミニウム、インジウム、ケイ素、チタン等
の有機金属化合物を添加したものに、アルミナ又
は酸化チタンの微粉末（0.5μ前後の粒径のもの）
を均一に0.5〜５％程度混ぜこみ、ペースト状に
しこれを、ガラス基板上に印刷法にて全面に印刷
する。この基板を150℃にて20分間の予備乾燥し
た後、500℃のベルト炉にて焼成すれば、アルミ
ナ又は酸化チタンの微粉末を含んだ絶縁膜が、ガ
ラス基板上に形成され、不透明で白色の膜とな
り、反射膜として充分な機能を果す。 To be more specific, a thickener such as nitrocellulose, an organic solvent such as ethanol, butyl carbitol, or butyl cellosolve, and an organometallic compound such as aluminum, indium, silicon, or titanium are added. , alumina or titanium oxide fine powder (particle size around 0.5μ)
0.5 to 5% of the mixture is mixed uniformly into a paste, and this is printed on the entire surface of a glass substrate using a printing method. If this substrate is pre-dried at 150℃ for 20 minutes and then fired in a belt furnace at 500℃, an insulating film containing fine powder of alumina or titanium oxide is formed on the glass substrate, making it opaque and white. It becomes a film and performs a sufficient function as a reflective film.
このようにして作つた白色基板を一方の基板と
し、他方は絶縁基膜及び透明電極のみをコートし
た絶縁基板を用い、白色膜を内側にして液晶セル
を組めば、表示パターンが下基板の裏側で反射さ
れることなく、鮮明に白色地を背景として表示さ
れ、安価で視認性が高く、工業的に価値のあるカ
ラー液晶セルが提供できる。 Using the white substrate made in this way as one substrate and the other as an insulating substrate coated with only an insulating base film and a transparent electrode, if a liquid crystal cell is assembled with the white film on the inside, the display pattern will be on the back side of the lower substrate. It is possible to provide a color liquid crystal cell that can be displayed clearly against a white background without being reflected by other objects, is inexpensive, has high visibility, and is of industrial value.
次に実施例について説明する。 Next, an example will be described.
実施例
主成分がアルミニウム、インジウム、ケイ素等
の有機金属化合物であるアルミニウムアセチルア
セナート、インジウムアセチルアセトナート、ビ
ニルトリス（２−メトキシエトキシ）シラン等
に、増粘剤としてニトロセルロースまたはエチル
セルロース等の有機物を、有機溶媒としてブチル
セルソルブとブチルカルビトールの混合溶媒を添
加混合してペーストをつくる。さらにそれに酸化
チタンの粒径0.25〜0.45μの粉末（石原産業株式
会社製 製品名R580）を１％又はアルミナの粒
径0.5μの粉末（不二見研摩材工業株式会社製品名
アルミクロン0.5A）を１％均一に混ぜこみ、ス
クリーン印刷法にてガラス基板の片面全面に塗布
し、150℃にて20分間予備乾燥後、ベルト炉で500
℃にて焼成し白色基板とする。Example: Organic substances such as nitrocellulose or ethylcellulose are added as a thickener to aluminum acetylacetonate, indium acetylacetonate, vinyltris(2-methoxyethoxy)silane, etc. whose main components are organic metal compounds such as aluminum, indium, and silicon. A mixed solvent of butyl cellosolve and butyl carbitol is added and mixed as an organic solvent to make a paste. Furthermore, 1% titanium oxide powder with a particle size of 0.25 to 0.45μ (manufactured by Ishihara Sangyo Co., Ltd., product name R580) or alumina powder with a particle size of 0.5μ (product name: Alumikulon 0.5A, manufactured by Fujimi Abrasives Industry Co., Ltd.) is added to it. Mix 1% of the mixture uniformly and apply it to the entire surface of one side of the glass substrate using the screen printing method. After pre-drying at 150℃ for 20 minutes, the
It is baked at ℃ to form a white substrate.
この白色基板及びガラス基板上に蒸着法にて酸
化インジウム等の金属酸化物からなる透明電極を
所定形状に形成して、その透明電極を被つてアル
ミナ又は酸化チタン粉末を含まない絶縁膜を印刷
法にて形成し、しかるのちに垂直表面処理剤であ
るシランカツプリング剤に浸漬し130℃にて乾燥
する。これらの２枚の基板を対向させ7μのスペ
ーサーを入れたエポキシ系接着剤（ナズター社製
製品名SE4000）で貼り合わせて液晶セルを形
成する。このセルに相転移型ゲストホスト液晶材
料を混ぜた誘電的異方性が負の液晶（チツソ株式
会社製 製品名EN−30）を封入する。こうして
得られた液晶セルは、白色地に鮮明な像が表示さ
れるポジ表示反射型カラー液晶セルとなる。 A transparent electrode made of a metal oxide such as indium oxide is formed in a predetermined shape on the white substrate and glass substrate by vapor deposition, and an insulating film containing no alumina or titanium oxide powder is printed over the transparent electrode. It is then immersed in a silane coupling agent, which is a vertical surface treatment agent, and dried at 130°C. These two substrates are placed facing each other and bonded together using an epoxy adhesive (manufactured by Naztar, product name: SE4000) containing a 7μ spacer to form a liquid crystal cell. This cell is filled with a liquid crystal with negative dielectric anisotropy (manufactured by Chitsuso Corporation, product name EN-30) mixed with a phase change type guest-host liquid crystal material. The liquid crystal cell thus obtained becomes a positive display reflective color liquid crystal cell that displays a clear image on a white background.
第２図はこの実施例によつて得られた液晶セル
の縦断面図で、図中の１は配向処理膜、２は透明
電極、３は絶縁基板、４は液晶、５は色素、６は
白色反射膜、８はシール剤である。この液晶セル
では反射膜６が液晶層のごく近くにあるから、像
は１つしか見えず、鮮明な表示が得られる。 FIG. 2 is a longitudinal cross-sectional view of a liquid crystal cell obtained in this example, in which 1 is an alignment film, 2 is a transparent electrode, 3 is an insulating substrate, 4 is a liquid crystal, 5 is a dye, and 6 is a A white reflective film, 8 is a sealant. In this liquid crystal cell, since the reflective film 6 is located very close to the liquid crystal layer, only one image can be seen and a clear display can be obtained.
本発明は前述のような構成になつており、安価
で視認性の高いカラー液晶セルが提供できる。 The present invention has the above-described configuration, and can provide a color liquid crystal cell that is inexpensive and has high visibility.
第１図は従来の液晶セルの縦断面図、第２図は
本発明の実施例に係る液晶セルの縦断面図であ
る。
１……配向処理膜、２……透明電極、３……絶
縁基板、４……液晶、５……色素、６……白色反
射膜、８……シール剤。
FIG. 1 is a vertical cross-sectional view of a conventional liquid crystal cell, and FIG. 2 is a vertical cross-sectional view of a liquid crystal cell according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Alignment treatment film, 2...Transparent electrode, 3...Insulating substrate, 4...Liquid crystal, 5...Dye, 6...White reflective film, 8...Sealing agent.
Claims (1)
縁基板上に有機金属化合物と白色微粉末との混合
ペーストを塗布し、これを焼成して絶縁基板の表
面に白色の反射膜を形成した後、この反射膜上に
透明電極と配向処理膜とを被着形成したことを特
徴とするカラー液晶セル。 ２ 特許請求の範囲第１項記載において、前記白
色微粉末がアルミナ微粉末であることを特徴とす
るカラー液晶セル。 ３ 特許請求の範囲第１項記載において、前記白
色微粉末が酸化チタン微粉末であることを特徴と
するカラー液晶セル。[Claims] 1. In a phase change color liquid crystal cell, a mixed paste of an organic metal compound and white fine powder is applied onto one insulating substrate, and this is fired to form a white reflective film on the surface of the insulating substrate. A color liquid crystal cell characterized in that, after forming a reflective film, a transparent electrode and an alignment treatment film are formed on the reflective film. 2. A color liquid crystal cell according to claim 1, wherein the white fine powder is alumina fine powder. 3. A color liquid crystal cell according to claim 1, wherein the white fine powder is a titanium oxide fine powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56158620A JPS5860780A (en) | 1981-10-07 | 1981-10-07 | Color liquid crystal cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56158620A JPS5860780A (en) | 1981-10-07 | 1981-10-07 | Color liquid crystal cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5860780A JPS5860780A (en) | 1983-04-11 |
| JPH0136632B2 true JPH0136632B2 (en) | 1989-08-01 |
Family
ID=15675685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56158620A Granted JPS5860780A (en) | 1981-10-07 | 1981-10-07 | Color liquid crystal cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5860780A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7754295B2 (en) * | 2006-06-29 | 2010-07-13 | Industrial Technology Research Institute | Single substrate guest-host polymer dispersed liquid crystal displays |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57155582A (en) * | 1981-03-20 | 1982-09-25 | Tokyo Shibaura Electric Co | Liquid crystal display unit |
-
1981
- 1981-10-07 JP JP56158620A patent/JPS5860780A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57155582A (en) * | 1981-03-20 | 1982-09-25 | Tokyo Shibaura Electric Co | Liquid crystal display unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5860780A (en) | 1983-04-11 |
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