JPS63296020A - Liquid crystal display element - Google Patents
Liquid crystal display elementInfo
- Publication number
- JPS63296020A JPS63296020A JP12999487A JP12999487A JPS63296020A JP S63296020 A JPS63296020 A JP S63296020A JP 12999487 A JP12999487 A JP 12999487A JP 12999487 A JP12999487 A JP 12999487A JP S63296020 A JPS63296020 A JP S63296020A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- liquid crystal
- crystal display
- transparent electrode
- display element
- 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.)
- Granted
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 30
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims description 21
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 239000011521 glass Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000005262 ferroelectric liquid crystals (FLCs) Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
- F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
-
- 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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134336—Matrix
-
- 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
- G02F1/1343—Electrodes
- G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Liquid Crystal (AREA)
- Geometry (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は液晶表示素子に関し、特に大画面でしかも高精
細な液晶表示素子の電極構成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, and more particularly to an electrode structure of a large-screen, high-definition liquid crystal display element.
［従来の技術］
従来、液晶表示素子、特に単純なドツトマトリクス型の
液晶表示素子の電極構成としては、基板上に透明電極の
みをストライプ状に形成したものが一般的に用いられて
いた。[Prior Art] Conventionally, as an electrode structure of a liquid crystal display element, particularly a simple dot matrix type liquid crystal display element, one in which only transparent electrodes are formed in a stripe shape on a substrate has been generally used.
しかしながら、この様な電極を、大画面且つ高精細な液
晶表示素子に使用すると、電極配線抵抗が大きくなり、
信号の遅延、駆動波形のなまり等の駆動上の問題が発生
する欠点があった。However, when such electrodes are used in large-screen, high-definition liquid crystal display elements, the electrode wiring resistance increases.
This has the drawback of causing driving problems such as signal delay and rounding of the driving waveform.
このため、比較的に比抵抗の小さいＡｌ１などの金属電
極配線が必要とされている。For this reason, metal electrode wiring made of Al1 or the like having a relatively low resistivity is required.
第４図は、従来の液晶表示素子の電極構成を示す断面図
である。同第４図において、従来の液晶表示素子の電極
はガラスなどの基板ｌの上に透明電極２が形成され、更
に金属電極３が透明電極２の上に沿って形成されている
。FIG. 4 is a cross-sectional view showing the electrode configuration of a conventional liquid crystal display element. In FIG. 4, the electrodes of a conventional liquid crystal display element include a transparent electrode 2 formed on a substrate l made of glass or the like, and a metal electrode 3 formed along the top of the transparent electrode 2.
しかしながら、この様な構成においては、金属電極３が
透明電極２の上に載設されているために、透明電極の開
口率が低下し、また透明電極の有効面積が小さくなるこ
とが問題となっていた。However, in such a configuration, since the metal electrode 3 is placed on the transparent electrode 2, the problem is that the aperture ratio of the transparent electrode decreases and the effective area of the transparent electrode decreases. was.
［発明が解決しようとする問題点］
本発明は、前記の様な従来技術の欠点を解決し、低抵抗
で且つ開口率の大きい液晶表示素子を歩留り良く提供す
ることを目的とするものである。[Problems to be Solved by the Invention] The present invention aims to solve the above-mentioned drawbacks of the prior art and provide a liquid crystal display element with low resistance and a large aperture ratio with good yield. .
［問題点を解決するための手段］
即ち１本発明は２枚の平行基板間に液晶を挟持し、該平
行基板の少なくとも１枚にストライプ状の透明電極とそ
れに沿って接して設けられている金属電極を有する液晶
表示素子において、金属電極が対応する透明電極の少な
くとも一方のエツジに、該エツジからはみ出して形成さ
れていることを特徴とする液晶表示素子である。[Means for Solving the Problems] In other words, in the present invention, a liquid crystal is sandwiched between two parallel substrates, and a striped transparent electrode is provided along and in contact with at least one of the parallel substrates. A liquid crystal display element having a metal electrode, characterized in that a metal electrode is formed on at least one edge of a corresponding transparent electrode so as to protrude from the edge.
以下、本発明を図面を参照しながら詳細に説明する。Hereinafter, the present invention will be explained in detail with reference to the drawings.
第１図は本発明に係わる液晶表示素子の電極構成の一例
を示す断面図である。同第１図において、本発明の液晶
表示素子の電極構成は金属電極３が対応する透明電極２
の一方のエツジ５よりはみ出して形成されてなるもので
ある。FIG. 1 is a sectional view showing an example of the electrode structure of a liquid crystal display element according to the present invention. In FIG. 1, the electrode structure of the liquid crystal display element of the present invention is such that a metal electrode 3 corresponds to a transparent electrode 2.
It is formed so as to protrude from one edge 5 of the.
この様な構成においては、透明電極２の金属電極３で被
覆されていない露出部の面積が大きくなるため、液晶表
示素子における画素部が大きくなり、ｒｙＡ口率を大き
くする事が可能である。In such a configuration, since the area of the exposed portion of the transparent electrode 2 that is not covered with the metal electrode 3 becomes large, the pixel portion of the liquid crystal display element becomes large, and it is possible to increase the ryA ratio.
次に、第２図は本発明に係わる液晶表示素子の電極構成
の他の例を示す断面図である。同第２図に示す様に、透
明電極２と金属電極３の重なり部を第１図よりも小さく
する事により、同じ開口率で隣接の透明電極間の隙間を
大きくする事が可能となり、透明電極の形成プロセスに
おいて、歩留り向上に継がる。Next, FIG. 2 is a sectional view showing another example of the electrode structure of the liquid crystal display element according to the present invention. As shown in Figure 2, by making the overlap between the transparent electrode 2 and the metal electrode 3 smaller than in Figure 1, it is possible to increase the gap between adjacent transparent electrodes with the same aperture ratio. Continuing to improve yield in the electrode formation process.
第３図は、本発明のさらに他の例を示す電極構成を示す
断面図である。FIG. 3 is a sectional view showing an electrode configuration showing still another example of the present invention.
同第３図において、ｌはガラスなどの基板、２は透明電
極、３はＡｊ？などの金属電極、４は５ｉ０２などの絶
縁膜であり、透明電極２のパターンを形成した後、絶縁
膜４を成膜し、プラズマエツチングにより絶縁ＷＪ４を
透明電極２に沿ってバターニングし、更に金属電極３を
積層し、バターニングして形成した電極を示すものであ
る。In FIG. 3, l is a substrate such as glass, 2 is a transparent electrode, and 3 is Aj? The metal electrode 4 is an insulating film such as 5i02, and after forming the pattern of the transparent electrode 2, the insulating film 4 is formed, and the insulating WJ 4 is buttered along the transparent electrode 2 by plasma etching. This shows an electrode formed by laminating metal electrodes 3 and patterning them.
この様な電極構成においては、金属、電極３は絶縁膜４
を介して対応する透明電極２の一方のエツジからはみ出
して隣接する透明電極２ａの上方までの間に巾広く形成
される。この構成により、金属電極は配線抵抗を低下し
、且つブラックストライプの役割を果たす事ができる。In such an electrode configuration, the metal electrode 3 is an insulating film 4.
It is formed to have a wide width extending from one edge of the corresponding transparent electrode 2 to above the adjacent transparent electrode 2a. With this configuration, the metal electrode can reduce wiring resistance and also play the role of a black stripe.
本発明において、金属電極３は特に限定することなく通
常の電極に使用されているものであれば如何なるもので
も用いることができ、例えばＡＲ。In the present invention, the metal electrode 3 is not particularly limited, and any metal electrode that is used in ordinary electrodes can be used, for example, AR.
Ｃｒ、 Ｍｏ、 ’ｉｌ、 ＮｉＣｒ等が挙げられる。Examples include Cr, Mo, 'il, NiCr, and the like.
［作用］
本発明の液晶表示素子は、２枚の平行基板間に液晶を挟
持し、該平行基板の少なくとも１枚にストライプ状の透
明電極とそれに沿って接して設けられている金属電極を
有する液晶表示素子において、金属電極が対応する透明
電極の少なくとも一方のエツジに、該エツジからはみ出
して形成されているので、透明電極の金属電極で被覆さ
れていない露出面積が大きくなり開口率を大きくするこ
とができ、また同じ開口率で透明電極の占有面積を小さ
くすることができるので歩留りか向上する。[Function] The liquid crystal display element of the present invention has a liquid crystal sandwiched between two parallel substrates, and at least one of the parallel substrates has a striped transparent electrode and a metal electrode provided along and in contact with the striped transparent electrode. In a liquid crystal display element, a metal electrode is formed on at least one edge of a corresponding transparent electrode, protruding from the edge, so that the exposed area of the transparent electrode that is not covered with the metal electrode becomes large, increasing the aperture ratio. Furthermore, since the area occupied by the transparent electrode can be reduced with the same aperture ratio, the yield is improved.
［実施例］ 以下、実施例を示し本発明をさらに具体的に説明する。[Example] Hereinafter, the present invention will be explained in more detail with reference to Examples.
実施例１
：１２０Ｘ３００■Ｉのガラス基板上にスパッタリング
法で厚さ１０００人のＩＴＯ膜を成膜し、ホトリソグラ
フィー技術を用いてほぼ全面にピッチ３０５ Ｊｊ−１
１、ライン巾２９３ ＩＬｍのパターンを形成した後、
厚さ２０００人のＡＲＭを成膜し、同様にとッチ３０５
ＪＬ１１、ライン巾８ＩＬｍ、ＩＴＯ電極との重なり巾
２ｇｍで第２図に示す構成のパターンを形成して電極基
板を得た。Example 1: An ITO film with a thickness of 1000 mm was formed on a 120 x 300 mm glass substrate by sputtering, and a pitch of 305 Jj-1 was formed on almost the entire surface using photolithography.
1. After forming a pattern with a line width of 293 ILm,
An ARM film with a thickness of 2000 mm was formed, and the thickness was 305 mm.
An electrode substrate was obtained by forming a pattern having the structure shown in FIG. 2 with JL11, a line width of 8 ILm, and an overlap width with the ITO electrode of 2 gm.
該電極基板を用いて、厚さ０．１ルｌの絶縁層（Ｓｉｎ
、）を介してＣ５−１０１７（チッソ■製）の強誘電性
液晶を挟持して液晶表示素子を構成し、駆動したところ
、開口率９１％の非常に高画質な液晶表示素子を歩留り
良く得る事が出来た。Using the electrode substrate, an insulating layer (Sin
When a liquid crystal display element was constructed by sandwiching a ferroelectric liquid crystal of C5-1017 (manufactured by Chisso ■) through , ) and driven, a very high-quality liquid crystal display element with an aperture ratio of 91% was obtained with a good yield. I was able to do it.
［発明の効果］
以上説明した通り、本発明によれば、低抵抗で且つ開口
率の大きい液晶表示素子を歩留り良く得る事がてきるの
で、大画面、高精細な液晶表示素子を低いコストで得る
事が可能となる。[Effects of the Invention] As explained above, according to the present invention, it is possible to obtain a liquid crystal display element with low resistance and a large aperture ratio at a high yield, so that a liquid crystal display element with a large screen and high definition can be produced at a low cost. It is possible to obtain.
第１図〜第３図は各々本発明に係わる液晶表示素子の電
極構成の例を示す断面図および第４図は従来の液晶表示
素子の電極構成を示す断面図である。
ｌ・・・基板 ２，２ａ・・・透明電極３・
・・金属電極 ４・・・絶縁膜５・・・エツジ1 to 3 are cross-sectional views showing examples of the electrode structure of a liquid crystal display element according to the present invention, and FIG. 4 is a cross-sectional view showing an electrode structure of a conventional liquid crystal display element. l... Substrate 2, 2a... Transparent electrode 3.
...Metal electrode 4...Insulating film 5...Edge
Claims (2)
少なくとも１枚にストライプ状の透明電極とそれに沿っ
て接して設けられている金属電極を有する液晶表示素子
において、金属電極が対応する透明電極の少なくとも一
方のエッジに、該エッジからはみ出して形成されている
ことを特徴とする液晶表示素子。(1) In a liquid crystal display element in which a liquid crystal is sandwiched between two parallel substrates and a striped transparent electrode is provided on at least one of the parallel substrates and a metal electrode is provided along and in contact with the striped transparent electrode, the metal electrode is A liquid crystal display element, characterized in that a liquid crystal display element is formed on at least one edge of a corresponding transparent electrode so as to protrude from the edge.
はみ出して隣接する透明電極の間に絶縁膜を介して形成
されている特許請求の範囲第１項記載の液晶表示素子。(2) The liquid crystal display element according to claim 1, wherein the metal electrode protrudes from one edge of the corresponding transparent electrode and is formed between adjacent transparent electrodes with an insulating film interposed therebetween.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62129994A JPH0666016B2 (en) | 1987-05-28 | 1987-05-28 | Liquid crystal element |
| US07/552,860 US5000545A (en) | 1987-05-28 | 1990-07-13 | Liquid crystal device with metal electrode partially overlying transparent electrode |
| US07/626,737 US5124826A (en) | 1987-05-28 | 1990-12-13 | Liquid crystal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62129994A JPH0666016B2 (en) | 1987-05-28 | 1987-05-28 | Liquid crystal element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63296020A true JPS63296020A (en) | 1988-12-02 |
| JPH0666016B2 JPH0666016B2 (en) | 1994-08-24 |
Family
ID=15023522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62129994A Expired - Fee Related JPH0666016B2 (en) | 1987-05-28 | 1987-05-28 | Liquid crystal element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0666016B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5227899A (en) * | 1990-09-07 | 1993-07-13 | Sharp Kabushiki Kaisha | Liquid crystal display device with low resistance film separated from one of two adjacent electrodes by an insulating film |
| US5274482A (en) * | 1990-11-21 | 1993-12-28 | Kabushiki Kaisha Toshiba | Matrix array using MIM device and α and β tantalum electrodes |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS579977U (en) * | 1980-06-16 | 1982-01-19 | ||
| JPS6033533A (en) * | 1983-08-05 | 1985-02-20 | Matsushita Electric Ind Co Ltd | Electrode for liquid crystal matrix display |
| JPS61273522A (en) * | 1985-05-29 | 1986-12-03 | Toppan Printing Co Ltd | Transparent electrode plate with metallic lead |
-
1987
- 1987-05-28 JP JP62129994A patent/JPH0666016B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS579977U (en) * | 1980-06-16 | 1982-01-19 | ||
| JPS6033533A (en) * | 1983-08-05 | 1985-02-20 | Matsushita Electric Ind Co Ltd | Electrode for liquid crystal matrix display |
| JPS61273522A (en) * | 1985-05-29 | 1986-12-03 | Toppan Printing Co Ltd | Transparent electrode plate with metallic lead |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5227899A (en) * | 1990-09-07 | 1993-07-13 | Sharp Kabushiki Kaisha | Liquid crystal display device with low resistance film separated from one of two adjacent electrodes by an insulating film |
| US5274482A (en) * | 1990-11-21 | 1993-12-28 | Kabushiki Kaisha Toshiba | Matrix array using MIM device and α and β tantalum electrodes |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0666016B2 (en) | 1994-08-24 |
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