JPS62239124A - Liquid crystal display element - Google Patents
Liquid crystal display elementInfo
- Publication number
- JPS62239124A JPS62239124A JP8317786A JP8317786A JPS62239124A JP S62239124 A JPS62239124 A JP S62239124A JP 8317786 A JP8317786 A JP 8317786A JP 8317786 A JP8317786 A JP 8317786A JP S62239124 A JPS62239124 A JP S62239124A
- Authority
- JP
- Japan
- Prior art keywords
- ito
- liquid crystal
- coating material
- electrode
- 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 abstract description 25
- 239000011248 coating agent Substances 0.000 claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 239000011521 glass Substances 0.000 claims abstract description 16
- 238000002834 transmittance Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 10
- 229920002120 photoresistant polymer Polymers 0.000 abstract description 7
- 238000007598 dipping method Methods 0.000 abstract description 3
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 abstract description 3
- 239000012670 alkaline solution Substances 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 2
- 229910003079 TiO5 Inorganic materials 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 238000013329 compounding Methods 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 2
- 238000005530 etching Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- RHZWSUVWRRXEJF-UHFFFAOYSA-N indium tin Chemical compound [In].[Sn] RHZWSUVWRRXEJF-UHFFFAOYSA-N 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 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、例えば大画面の表示部に適用される液晶表示
素子に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a liquid crystal display element applied to, for example, a large screen display section.
従来の液晶表示素子は、第２図に示すように、対向配置
となるように設けられたガラス基板１・１の対向面には
、蒸着されたｒＴｏ Ｈｎｄ ｉ ｕｍ Ｔｉｎ
０ｘｉｄｅ）膜をエツチングすることにより形成される
ＩＴＯ電極２・・・が形成されている。このＩＴＯ電極
２・・・の表面には配向膜３・３が形成され、この配向
膜３・３間には、液晶が充填されて液晶層４を形成して
いる。In the conventional liquid crystal display element, as shown in FIG.
ITO electrodes 2 are formed by etching the ITO (Oxide) film. Alignment films 3 are formed on the surfaces of the ITO electrodes 2, and liquid crystal is filled between the alignment films 3 to form a liquid crystal layer 4.
ところが、上記従来の構造では、ＩＴＯ電極２・・・が
形成されている部位とそれ以外の部分とでは液晶層４の
厚さに差異が生じるため、液晶表示に色調の差が発生し
ていた。更に、ＩＴＯ電極２・・・の屈折および干渉に
よりＩＴＯ電極２・・・が視認されるという問題点を有
していた。特に、近年は液晶表示素子の大型化等に伴い
、ＩＴＯ電極２・・・の低抵抗化が要求されているが、
この低抵抗化を達成するためには、ＩＴＯ電極２・・・
の膜厚を大きく形成しなければならず、その結果、上記
の問題が一層顕著になっている。However, in the conventional structure described above, there is a difference in the thickness of the liquid crystal layer 4 between the part where the ITO electrodes 2 are formed and the other parts, resulting in a difference in color tone in the liquid crystal display. . Furthermore, there was a problem in that the ITO electrodes 2 were visible due to refraction and interference of the ITO electrodes 2. In particular, in recent years, as liquid crystal display elements have become larger, there has been a demand for lower resistance of ITO electrodes 2...
In order to achieve this low resistance, the ITO electrode 2...
The film thickness must be increased, and as a result, the above-mentioned problems have become even more pronounced.
本発明は、上記従来の問題点を考慮してなされたもので
あって、液晶表示素子の色調差を無くし、かつ、電極具
えを解消した品質の高い液晶表示素子の提供を目的とす
るものである。The present invention has been made in consideration of the above-mentioned conventional problems, and aims to provide a high-quality liquid crystal display element that eliminates the color tone difference of the liquid crystal display element and eliminates the need for electrodes. be.
本発明に係る液晶表示素子は、上記の目的を達成するた
めに、硝子基板上にＩＴＯ電極が形成された液晶表示素
子であって、上記硝子基板上のＩＴＯ電極が形成されて
いない部位に、ＩＴＯ電極と同レベルの膜厚、透過率、
及び屈折率を有するコーティング膜を形成し、液晶層の
厚さを均一化するすると共に、電極見えを解消しうるよ
うに構成したことを特徴とするものである。In order to achieve the above object, the liquid crystal display element according to the present invention is a liquid crystal display element in which an ITO electrode is formed on a glass substrate, and in a portion of the glass substrate where the ITO electrode is not formed. Same level of film thickness and transmittance as ITO electrodes.
The present invention is characterized in that a coating film having a refractive index and a refractive index is formed to make the thickness of the liquid crystal layer uniform and to eliminate the visibility of the electrodes.
本発明の一実施例を第１図に基づいて以下に説明する。 An embodiment of the present invention will be described below with reference to FIG.
硝子基板１０・１０が液晶表示素子の表面側及び裏面側
に耐向配互となるように設けられている。Glass substrates 10 are provided on the front side and the back side of the liquid crystal display element so as to be oriented with respect to each other.
これら硝子基板１０・１０の対向面には、ＩＴＯ（Ｉｎ
ｄｉｕｍ Ｔｉｎ ０ｘｉｄｅ）１穫１６・・・が
形成されていると共に、ＩＴＯ電極１６・・・が形成さ
れていない部位には、ＩＴＯ電極１６・・・と同レベル
の膜厚、透過率（干渉色）、及び屈折率を有するコーテ
ィング膜１１・・・が形成されている。On the opposing surfaces of these glass substrates 10, 10, ITO (In
dium Tin Oxide) 16... are formed, and the areas where the ITO electrodes 16... are not formed have the same film thickness and transmittance (interference color) as the ITO electrodes 16... ), and a coating film 11 having a refractive index are formed.
このコーティング膜１１・・・は、通常、ＴａｚＯｓ若
しくはＴｉｅ□、又は、Ｔ ａ ２０ ｓと５ｉＯｚと
の混合物、若しくはＴ ｉ ＯｚとＳｉＯ□との混合物
から構成されている。これらコーティング膜１１・・・
と上記ＩＴＯ電極１６・・・との表面には配向膜１２・
１２が形成されている。これら両配向膜１２・１２間に
は液晶が充填されて液晶層１５を形成しており、この液
晶は配向膜１２・１２の端部近傍同士の間に介装された
シール材１４・１４にて密封されることにより、漏洩が
防止されている。The coating film 11 is usually made of TazOs or Tie□, a mixture of T a 20 s and 5iOz, or a mixture of T i Oz and SiO□. These coating films 11...
An alignment film 12 is formed on the surface of the ITO electrode 16 and the ITO electrode 16.
12 are formed. A liquid crystal is filled between these alignment films 12 and 12 to form a liquid crystal layer 15, and this liquid crystal is filled with sealing material 14 interposed between the alignment films 12 and 12 near the ends thereof. leakage is prevented by sealing.
また前記硝子基板ＩＯ・１０の対向面と反対側の面には
偏向板１３・１３が設けられている。In addition, deflection plates 13 are provided on the surface opposite to the opposing surface of the glass substrate IO.
上記の構成において、硝子基板１０・１０の対向面にコ
ーティング膜１１・・・とＩＴＯ電極１６・・・とを形
成するときには、硝子基板１０・１０の対向面にＩＴＯ
を蒸着してＩＴＯ膜を形成した後に、このＩＴＯ膜の表
面にフォトレジストを塗布してフォトレジスト層を形成
する。次に、このフォトレジスト層の露光及び現像を行
ってＩＴＯ電極Ｉ６・・・が形成される部位のみフォト
レジスト層を残す。次いで、上記ＩＴＯ膜をエツチング
してＩＴＯ電極１６・・・を形成する。しかる後、上記
フォトレジスト層を剥離することなく、Ｔａ、Ｏ，若し
くはＴ ｉ Ｏ□等から成るコーティング材料（たとえ
ば日本曹達株式会社製ＮＴａ−７５０、ＮＴｉ−５００
等）を、ディッピングまたは印刷により硝子基板１０・
ＩＯに塗布する。ここで、これらＴａ２Ｏ，若しくはＴ
ｉＯ２では上記ＩＴＯ電極１６・・・と同レベルの透過
率（干渉色）及び屈折率を有するコーティング材料を作
製することができないときには、Ｔａ２０５若しくはＴ
ｉ Ｏ，にＳｉＯ□を混合させ、この混合比率を変え
ることによりＩＴＯ電極１６・・・と同レベルの透過率
（干渉色）及び屈折率を存するコーティング材料を作製
し、硝子基板１０・１０に塗布する。この後、上記積層
基板を１５０〜２００℃で仮焼成した後、積層基板をア
ルカリ溶液に浸漬してフォトレジスト層を剥離すること
により、ＩＴＯ電極１６・・・上のコーティング材料の
リフトオフを行う。次に、ＩＴＯ電極１６・・・間のコ
ーティング材料を３００〜５００°Ｃで本焼成処理して
、コーティング膜１１・・・を形成するものである。In the above configuration, when forming the coating film 11... and the ITO electrode 16... on the opposing surfaces of the glass substrates 10, 10, the ITO electrodes 16...
After forming an ITO film by vapor deposition, a photoresist is applied to the surface of this ITO film to form a photoresist layer. Next, this photoresist layer is exposed and developed, leaving only the portions where the ITO electrodes I6 . . . are to be formed. Next, the ITO film is etched to form ITO electrodes 16. Thereafter, without peeling off the photoresist layer, a coating material made of Ta, O, or TiO□ (for example, NTa-750, NTi-500 manufactured by Nippon Soda Co., Ltd.) is applied.
etc.) on the glass substrate 10 by dipping or printing.
Apply to IO. Here, these Ta2O or T
When it is not possible to produce a coating material with iO2 having the same level of transmittance (interference color) and refractive index as the ITO electrode 16, Ta205 or T
By mixing SiO□ with iO, and changing this mixing ratio, a coating material having the same level of transmittance (interference color) and refractive index as the ITO electrode 16 was created, and coated on the glass substrates 10. Apply. Thereafter, the laminated substrate is pre-baked at 150 to 200° C., and the coating material on the ITO electrodes 16 is lifted off by immersing the laminated substrate in an alkaline solution and peeling off the photoresist layer. Next, the coating material between the ITO electrodes 16 is subjected to main firing treatment at 300 to 500°C to form the coating film 11.
本発明は以上のように、硝子基板上にＩＴＯ電極が形成
された液晶表示素子であって、上記硝子基板上のＩＴＯ
電極が形成されていない部位に、ＩＴＯ電極と同レベル
の膜厚を有するコーティング膜を形成しているので、液
晶層の厚さが均一化し、液晶表示素子の色調差を無くす
ことができる。As described above, the present invention provides a liquid crystal display element in which ITO electrodes are formed on a glass substrate, and in which ITO electrodes are formed on the glass substrate.
Since a coating film having the same thickness as the ITO electrode is formed in the area where no electrode is formed, the thickness of the liquid crystal layer is made uniform, and color tone differences in the liquid crystal display element can be eliminated.
加えて、コーティング膜は［ＴＯ電極と同レベルの透過
率（干渉色）、屈折率を有するので、ＩＴＯ電極の電極
見えを解消することができる等の効果を奏する。In addition, since the coating film has the same level of transmittance (interference color) and refractive index as the TO electrode, it has the effect of eliminating the electrode visibility of the ITO electrode.
第１図は本発明の一実施例を示す断面図、第２図は従来
の液晶表示素子の断面図である。
１０は硝子基板、１１はコーティング膜、１２は配向膜
、１５は液晶、１６はＩＴＯ（Ｉｎｄｉｕｍ Ｔｉｎ
０ｘｉｄｅ）電極である。FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG. 2 is a sectional view of a conventional liquid crystal display element. 10 is a glass substrate, 11 is a coating film, 12 is an alignment film, 15 is a liquid crystal, and 16 is ITO (Indium Tin).
Oxide) electrode.
Claims (1)
であって、上記硝子基板上のＩＴＯ電極が形成されてい
ない部位に、ＩＴＯ電極と同レベルの膜厚、透過率、及
び屈折率を有するコーティング膜を形成したことを特徴
とする液晶表示素子。1. A liquid crystal display element in which an ITO electrode is formed on a glass substrate, and a film thickness, transmittance, and refractive index of the same level as the ITO electrode is applied to a portion of the glass substrate where the ITO electrode is not formed. 1. A liquid crystal display element comprising a coating film comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8317786A JPS62239124A (en) | 1986-04-10 | 1986-04-10 | Liquid crystal display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8317786A JPS62239124A (en) | 1986-04-10 | 1986-04-10 | Liquid crystal display element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62239124A true JPS62239124A (en) | 1987-10-20 |
Family
ID=13795007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8317786A Pending JPS62239124A (en) | 1986-04-10 | 1986-04-10 | Liquid crystal display element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62239124A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0517624U (en) * | 1991-08-20 | 1993-03-05 | カシオ計算機株式会社 | Liquid crystal display |
| JP2012118425A (en) * | 2010-12-03 | 2012-06-21 | Toray Ind Inc | Substrate for liquid crystal display and manufacturing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55135819A (en) * | 1979-04-10 | 1980-10-23 | Citizen Watch Co Ltd | Production of liquid crystal display device |
| JPS56121016A (en) * | 1980-02-27 | 1981-09-22 | Sharp Corp | Liquid-crystal cell |
-
1986
- 1986-04-10 JP JP8317786A patent/JPS62239124A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55135819A (en) * | 1979-04-10 | 1980-10-23 | Citizen Watch Co Ltd | Production of liquid crystal display device |
| JPS56121016A (en) * | 1980-02-27 | 1981-09-22 | Sharp Corp | Liquid-crystal cell |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0517624U (en) * | 1991-08-20 | 1993-03-05 | カシオ計算機株式会社 | Liquid crystal display |
| JP2012118425A (en) * | 2010-12-03 | 2012-06-21 | Toray Ind Inc | Substrate for liquid crystal display and manufacturing method thereof |
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