JPH0666016B2 - Liquid crystal element - Google Patents
Liquid crystal elementInfo
- Publication number
- JPH0666016B2 JPH0666016B2 JP62129994A JP12999487A JPH0666016B2 JP H0666016 B2 JPH0666016 B2 JP H0666016B2 JP 62129994 A JP62129994 A JP 62129994A JP 12999487 A JP12999487 A JP 12999487A JP H0666016 B2 JPH0666016 B2 JP H0666016B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- electrode
- stripe
- transparent electrode
- metal 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 - Fee Related
Links
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)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は液晶素子に関し、特に大画面でしかも高精細な
液晶素子の電極構成に関するものである。TECHNICAL FIELD The present invention relates to a liquid crystal element, and more particularly to an electrode configuration of a liquid crystal element having a large screen and high definition.
［従来の技術］ 従来、液晶表示素子、特に単純なドットマトリクス型の
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 the electrode configuration 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 stripes on a substrate is 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 an electrode is used for a large-screen and high-definition liquid crystal display element, the electrode wiring resistance increases,
There is a drawback that driving problems such as signal delay and driving waveform distortion occur.
このため、比較的に比抵抗の小さいAlなどの金属電極配
線が必要とされている。Therefore, metal electrode wiring such as Al having a relatively low specific resistance is required.
第２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２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１の上に透明電極２が形成され、更
に金属電極（金属膜）３が透明電極２の上に沿って形成
されている。FIG. 2 is a sectional view showing an electrode configuration of a conventional liquid crystal display element. In FIG. 2, the electrodes of the conventional liquid crystal display element are such that a transparent electrode 2 is formed on a substrate 1 such as glass, and a metal electrode (metal film) 3 is formed along 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（金
属膜）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 (metal film) 3 is placed on the transparent electrode 2, the aperture ratio of the transparent electrode is reduced and the effective area of the transparent electrode is reduced. Was a problem.
［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表示品位が良好な液晶素子を歩留
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] An object of the present invention is to solve the above-mentioned drawbacks of the prior art and to provide a liquid crystal element having a low resistance, a large aperture ratio and good display quality with a good yield. To do.
［問題点を解決するための手段］ 即ち、本発明は、２枚の基板と、少なくとも一方の基板
に設けた複数のストライプ状透明電極と、２枚の基板間
に配置した強誘電性液晶とを有する液晶素子において、
前記複数のストライプ状透明電極を設けた基板上に絶縁
膜が設けられ、該複数のストライプ状透明電極の配置に
よって形成された隣合う電極の間隔領域を全体に亘って
覆う金属膜が該ストライプ状透明電極の長手方向に沿っ
て該絶縁膜上に設けられ、且つ該金属膜が該ストライプ
状透明電極のエッジ付近の絶縁膜に形成したコンタクト
ホールを通して該ストライプ状透明電極と電気的接続さ
せて設けられたことを特徴とする液晶素子である。[Means for Solving Problems] That is, the present invention provides two substrates, a plurality of stripe-shaped transparent electrodes provided on at least one substrate, and a ferroelectric liquid crystal arranged between the two substrates. In a liquid crystal element having
An insulating film is provided on a substrate provided with the plurality of stripe-shaped transparent electrodes, and a metal film that entirely covers a space between adjacent electrodes formed by the arrangement of the plurality of stripe-shaped transparent electrodes is the stripe-shaped. Provided on the insulating film along the longitudinal direction of the transparent electrode, and the metal film is electrically connected to the striped transparent electrode through a contact hole formed in the insulating film near the edge of the striped transparent electrode. It is a liquid crystal element characterized by the above.
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 described in detail with reference to the drawings.
第１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. 1 is a sectional view showing an electrode structure showing still another example of the present invention.
同第１図において、１はガラスなどの基板、２は透明電
極、３はAlなどの金属電極（金属膜）、４はSiO2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、プラズマエッチングにより絶縁膜４を
透明電極２に沿ってパターニングし、更に金属電極（金
属膜）３を積層し、パターニングして形成した電極を示
すものである。In FIG. 1, 1 is a substrate such as glass, 2 is a transparent electrode, 3 is a metal electrode (metal film) such as Al, and 4 is an insulating film such as SiO 2 and after the pattern of the transparent electrode 2 is formed. 1 shows an electrode formed by forming an insulating film 4, patterning the insulating film 4 along the transparent electrode 2 by plasma etching, and further stacking and patterning a metal electrode (metal film) 3.
この様な電極構成においては、金属電極（金属膜）３は
絶縁膜４を介して対応する透明電極２の一方のエッジか
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（金属膜）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 (metal film) 3 is formed wide between the transparent electrode 2 and the adjacent transparent electrode 2a, protruding from one edge of the corresponding transparent electrode 2 through the insulating film 4. . With this configuration, the metal electrode (metal film) can reduce the wiring resistance and can play the role of a black stripe.
本発明において、金属電極（金属膜）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Al,Cr,Mo,W,NiC
r等が挙げられる。In the present invention, the metal electrode (metal film) 3 is not particularly limited, and any one can be used as long as it is used for a normal electrode, for example, Al, Cr, Mo, W, NiC.
r and the like.
［作用］ 本発明は、２枚の基板と、少なくとも一方の基板に設け
た複数のストライプ状透明電極と、２枚の基板間に配置
した強誘電性液晶とを有する液晶素子において、前記複
数のストライプ状透明電極を設けた基板上に絶縁膜が設
けられ、該複数のストライプ状透明電極の配置によって
形成された隣合う電極の間隔領域を全体に亘って覆う金
属膜が該ストライプ状透明電極の長手方向に沿って該絶
縁膜上に設けられているので、電極の間隔領域において
強誘電性液晶の配向状態を制御することができため、表
示品位を良好に保つことができる。[Operation] The present invention provides a liquid crystal element having two substrates, a plurality of stripe-shaped transparent electrodes provided on at least one substrate, and a ferroelectric liquid crystal arranged between the two substrates. An insulating film is provided on the substrate provided with the stripe-shaped transparent electrodes, and a metal film that covers the entire gap region between adjacent electrodes formed by the arrangement of the plurality of stripe-shaped transparent electrodes is the stripe-shaped transparent electrodes. Since it is provided on the insulating film along the longitudinal direction, it is possible to control the alignment state of the ferroelectric liquid crystal in the electrode interval region, and thus it is possible to maintain good display quality.
また、金属膜がストライプ状透明電極のエッジ付近の絶
縁膜に形成したコンタクトホールを通して該ストライプ
状透明電極と電気的接続させて設けられているので、液
晶素子に電圧を印加すると、金属膜が絶縁膜の上に設け
られているため、この金属膜に強誘電性液晶の自発分極
に伴う静電荷を発生し、この静電荷が表示に悪影響を及
ぼすのを防止することができる。Further, since the metal film is provided so as to be electrically connected to the striped transparent electrode through the contact hole formed in the insulating film near the edge of the striped transparent electrode, the metal film is insulated when a voltage is applied to the liquid crystal element. Since it is provided on the film, it is possible to prevent the metal film from generating an electrostatic charge due to the spontaneous polarization of the ferroelectric liquid crystal, and preventing the electrostatic charge from adversely affecting the display.
さらに、金属膜がストライプ状透明電極のエッジ付近の
絶縁膜に設けられているので、透明電極の金属膜で被覆
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が向上する。Further, since the metal film is provided on the insulating film near the edge of the stripe-shaped transparent electrode, the exposed area of the transparent electrode which is not covered with the metal film is increased, and the aperture ratio can be increased, and the same aperture ratio can be obtained. Therefore, the area occupied by the transparent electrode can be reduced, so that 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。[Examples] Hereinafter, the present invention will be described more specifically with reference to Examples.
実施例１ 320×300mmのガラス基板上にスパッタリング法で厚さ10
0Å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305μｍ、ライン巾293μｍのパターン
を形成した後、SiO2膜を設け、ITO電極上のSiO2膜に第
１図に示す様なコンタクトホール31を形成し、次いで厚
さ2000ÅのAl膜を成膜し、同様にピッチ305μｍ、ライ
ン巾８μｍ、ITO電極との重なり巾２μｍで第１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 A glass substrate having a size of 320 × 300 mm and a thickness of 10 was formed by a sputtering method.
After forming a 0Å ITO film and using a photolithography technique to form a pattern with a pitch of 305 μm and a line width of 293 μm on almost the entire surface, an SiO 2 film is provided, and the SiO 2 film on the ITO electrode is shown in FIG. Such a contact hole 31 is formed, and then an Al film having a thickness of 2000 Å is formed. Similarly, a pattern having the configuration shown in FIG. An electrode substrate was obtained.
該電極基板を用いて、厚さ0.1μｍの絶縁層（SiO2）を
介してCS−1017（チッソ（株）製）の強誘電性液晶を挟
持して液晶素子を構成し、駆動したところ、開口率91％
の非常に高画質な液晶素子を歩留り良く得る事が出来
た。Using the electrode substrate, a liquid crystal element was constructed by sandwiching a ferroelectric liquid crystal of CS-1007 (manufactured by Chisso Corp.) through an insulating layer (SiO 2 ) having a thickness of 0.1 μm, and when driven, Opening rate 91%
We were able to obtain a very high image quality liquid crystal device with good yield.
［発明の効果］ 以上説明した通り、本発明によれば、電極の間隔領域に
おいて強誘電性液晶の配向状態を制御することができた
ため表示品位を良好に保つことができ、また強誘電性液
晶の自発分極に伴う静電荷が発生し表示に悪影響を及ぼ
すのを防止することができ、さらに低抵抗で且つ開口率
の大きい液晶素子を歩留り良く得る事ができるので、大
画面、高精細な液晶素子を低いコストで得る事が可能と
なる。[Effects of the Invention] As described above, according to the present invention, since the alignment state of the ferroelectric liquid crystal can be controlled in the interval region of the electrodes, good display quality can be maintained, and the ferroelectric liquid crystal can be maintained. It is possible to prevent the occurrence of electrostatic charge due to the spontaneous polarization of the liquid crystal and adversely affect the display, and it is possible to obtain a liquid crystal element having a low resistance and a large aperture ratio with a high yield. It is possible to obtain the device at low cost.
第１図は本発明に係わる液晶素子の電極構成の例を示す
断面図および第２図は従来の液晶素子の電極構成を示す
断面図である。 １……基板、2,2a……透明電極 ３……金属電極（金属膜）、４……絶縁膜 ５……エッジ、31……コンタクトホールFIG. 1 is a sectional view showing an example of the electrode constitution of a liquid crystal element according to the present invention, and FIG. 2 is a sectional view showing the electrode constitution of a conventional liquid crystal element. 1 ... Substrate, 2, 2a ... Transparent electrode 3 ... Metal electrode (metal film), 4 ... Insulating film 5 ... Edge, 31 ... Contact hole
───────────────────────────────────────────────────── フロントページの続き (72)発明者 西田 直哉 東京都大田区下丸子３丁目30番２号 キヤ ノン株式会社内 (56)参考文献 特開 昭60−33533（ＪＰ，Ａ) 特開 昭61−273522（ＪＰ，Ａ) 実開 昭57−9977（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Naoya Nishida 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (56) References JP-A-60-33533 (JP, A) JP-A-61 -273522 (JP, A) Actually opened Sho 57-9977 (JP, U)
Claims (1)
けた複数のストライプ状透明電極と、２枚の基板間に配
置した強誘電性液晶とを有する液晶素子において、前記
複数のストライプ状透明電極を設けた基板上に絶縁膜が
設けられ、該複数のストライプ状透明電極の配置によっ
て形成された隣合う電極の間隔領域を全体に亘って覆う
金属膜が該ストライプ状透明電極の長手方向に沿って該
絶縁膜上に設けられ、且つ該金属膜が該ストライプ状透
明電極のエッジ付近の絶縁膜に形成したコンタクトホー
ルを通して該ストライプ状透明電極と電気的接続させて
設けられたことを特徴とする液晶素子。1. A liquid crystal device having two substrates, a plurality of stripe-shaped transparent electrodes provided on at least one of the substrates, and a ferroelectric liquid crystal arranged between the two substrates. An insulating film is provided on a substrate provided with transparent electrodes, and a metal film that entirely covers a gap area between adjacent electrodes formed by the arrangement of the plurality of striped transparent electrodes is a longitudinal direction of the striped transparent electrodes. And the metal film is provided in electrical contact with the stripe-shaped transparent electrode through a contact hole formed in the insulation film near the edge of the stripe-shaped transparent electrode. And liquid crystal element.
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 JPS63296020A (en) | 1988-12-02 |
| JPH0666016B2 true 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) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04116620A (en) * | 1990-09-07 | 1992-04-17 | Sharp Corp | Liquid crystal display device |
| TW201343B (en) * | 1990-11-21 | 1993-03-01 | Toshiba Co Ltd |
Family Cites Families (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 | Electrodes for liquid crystal matrix display |
| JPH0695184B2 (en) * | 1985-05-29 | 1994-11-24 | 凸版印刷株式会社 | Transparent electrode plate for dot matrix type color liquid crystal display |
-
1987
- 1987-05-28 JP JP62129994A patent/JPH0666016B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63296020A (en) | 1988-12-02 |
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