JPS5824B2 - liquid crystal display device - Google Patents
liquid crystal display deviceInfo
- Publication number
- JPS5824B2 JPS5824B2 JP51064649A JP6464976A JPS5824B2 JP S5824 B2 JPS5824 B2 JP S5824B2 JP 51064649 A JP51064649 A JP 51064649A JP 6464976 A JP6464976 A JP 6464976A JP S5824 B2 JPS5824 B2 JP S5824B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- display device
- electrodes
- birefringence
- 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
Landscapes
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
【発明の詳細な説明】
本発明は電場印加による液晶の複屈折率変化を利用して
色彩表示する液晶表示装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid crystal display device that displays colors by utilizing changes in the birefringence of liquid crystal caused by application of an electric field.
液晶の電気光学効果には、動的散乱モード（ＤＳＭ）、
ツィステッド・ネマチック（ＴＮ）効果、電場による複
屈折率制御（ｅｌｅｃｔｒｉｃａｌｌｙ ｃｏｎ−ｔｒ
ｏｌｌｅｄ ｂｉｒｅｆｒｉｎｇｅｎｃｅ（ＥＣＢ））
効果などがある。The electro-optical effect of liquid crystals includes dynamic scattering mode (DSM),
Twisted nematic (TN) effect, birefringence control by electric field (electrically con-tr
(ECB)
There are effects etc.
ＤＳＭやＴＮ効果を利用した表示素子は時計、電子式卓
上計算器、計測器などの数字表示素子として実用されて
おり、更にマトリクス駆動による動画像表示も試みられ
ているが、実用化されていない。Display elements that utilize the DSM and TN effects are in practical use as numeric display elements for watches, electronic desktop calculators, measuring instruments, etc. Furthermore, attempts have been made to display moving images using matrix drive, but this has not been put to practical use. .
一方ＥＣＢ効果を利用した色彩表示が可能な液晶表示素
子では、応答速度が遅いとか、表示したい色彩以外の色
がクロストークとして現われるなどのマトリクス表示に
不向きな特性を有するため動画像表示はまったく不可能
である。On the other hand, liquid crystal display elements that can display colors using the ECB effect have characteristics that are unsuitable for matrix display, such as slow response speed and colors other than the desired color appearing as crosstalk, making them completely unsuitable for displaying moving images. It is possible.
しかしながら、前記色彩表示が可能な液晶表示素子にお
いても動画像を表示できることが強く望まれている。However, it is strongly desired that the liquid crystal display element capable of color display be capable of displaying moving images.
本発明は、上記点にかんがみてなされたもので、電場印
加による液晶の複屈折率変化を利用して色彩表示する液
晶表示装置において、マトリクス駆動することなく、擬
似的に動きのある色彩像を表示することを可能とした液
晶表示装置である。The present invention has been made in view of the above points, and is a liquid crystal display device that displays colors by utilizing changes in the birefringence of liquid crystals due to the application of an electric field. This is a liquid crystal display device that can display images.
すなわち本発明は、電場印加による液晶の複屈折率変化
を利用して色彩表示する液晶表示装置において、液晶を
保持する２枚の基板の少くとも一方の基板面には、複数
個の電極が放射状もしくは直線状に、連続的に配置され
ており、前記複数個の電極のうちで周期的な位置を占め
る電極を一組とし、その各々の組に、１５Ｈ２乃至０．
５Ｈｚのそれぞれ位相の異なる電気信号を印加して前記
液晶の複屈折率を変化させるための駆動部を具備してな
る液晶表示装置であり、１５Ｈ２乃至０．５Ｈｚのそれ
ぞれ位相の異なる電気信号を用いたため、放射状に配置
された電極の場合には、人間の目には表示された色彩像
が回転しているごとく、また直線状に配置された電極の
場合には一方向に色彩像が動いているごとく観測される
。That is, the present invention provides a liquid crystal display device that displays colors by utilizing a change in the birefringence of liquid crystal due to the application of an electric field. Alternatively, a set of electrodes that are arranged continuously in a straight line and occupy periodic positions among the plurality of electrodes is set, and each set has a 15H2 to 0.
This is a liquid crystal display device comprising a drive unit for changing the birefringence index of the liquid crystal by applying electrical signals of 5 Hz with different phases, and using electrical signals of 15H2 to 0.5 Hz with different phases. Therefore, in the case of radially arranged electrodes, the displayed color image appears to the human eye to be rotating, and in the case of linearly arranged electrodes, the color image appears to move in one direction. It is observed as if it were there.
なお、電気信号の周波数を１５Ｈｚ乃至０．５Ｈｚに限
定したのは、１５Ｈｚ以上では、液晶のレスポンスが遅
いため、すべての電極部が同じような色彩像となり動い
ているように見えず、また０、５Ｈｚ以下では人間の目
の残像時間より充分長いため、色彩像が単に点滅してい
るように見え動きは観測されないためである。The reason why we limited the frequency of the electrical signal to 15Hz to 0.5Hz is because at frequencies above 15Hz, the response of the liquid crystal is slow, so all the electrodes have the same color image and do not appear to be moving. , 5 Hz or less, the afterimage time is sufficiently longer than the afterimage time of the human eye, so the color image appears to simply blink and no movement is observed.
更に具体的に図面を用いて説明すると次の通りである。A more specific explanation using the drawings is as follows.
例えば、第１図のイで示されるように、扇のごとく放射
状に配列した複数個の透明電極１゜２．３．・・・・・
・、ｎ−１，ｎが施されたガラス基板ａと、第１図の口
のごとく、扇状透明電極１′が一体的に施されたガラス
基板ａ′の間に第１図のハのごとく、液晶すを特定な分
子配列をするようにはさみ、液晶セルとし、前記液晶セ
ルを２枚の偏光板ｃ、ｃ´間に保持し液晶表示素子が構
成される。For example, as shown by A in FIG. 1, a plurality of transparent electrodes 1° 2.3.・・・・・・
・, n-1, n between the glass substrate a on which the electrodes 1 and n are applied, and the glass substrate a' on which the fan-shaped transparent electrode 1' is integrally formed as shown in the opening in FIG. 1, as shown in c in FIG. A liquid crystal display element is constructed by sandwiching liquid crystal cells in a specific molecular arrangement to form a liquid crystal cell, and holding the liquid crystal cell between two polarizing plates c and c'.
更に第２図のごとく前記ガラス基板ａの透明電極１．２
，３．・・・・・・、９，１０の周期的位置、例えば一
つおきの電極の組、すなわち電極１，３，５゜７．９の
組と、電極２，４，６，８．１０の組は、それぞれ接続
されて、リード線２０，２１を経て、駆動部２２へ導び
かれており、前記ガラス基板ａ′の電極１′はリード線
３０を経て駆動部２２へ導びかれている。Further, as shown in FIG. 2, transparent electrodes 1.2 on the glass substrate a
,3. . . . 9, 10 periodic positions, for example, every other set of electrodes, i.e. the set of electrodes 1, 3, 5° 7.9 and the set of electrodes 2, 4, 6, 8, 10. The pairs are connected to each other and guided to the drive section 22 via lead wires 20 and 21, and the electrode 1' of the glass substrate a' is guided to the drive section 22 via the lead wire 30. .
そして、例えば電極１，３，５，７゜９と電極１′、な
らびに電極２，４，６，８．１０と電極１′の間に、そ
れぞれ第３図のイ、口で示されるごとく、半周期だけず
れたある電圧の交流信号を１５Ｈｚ乃至０．５Ｈｚの周
期で印加する。For example, between electrodes 1, 3, 5, 7°9 and electrode 1', and between electrodes 2, 4, 6, 8.10 and electrode 1', as shown by A and A in FIG. An AC signal of a certain voltage shifted by a half period is applied at a period of 15 Hz to 0.5 Hz.
即ち上記２つの電極群で半周期位相をずらして印加した
り、あるいは第４図のイ、口のごとく半周期づつ電圧の
異なる交流信号を１５Ｈｚ乃至０．５Ｈｚの周期でしか
も半周期位相をずらして印加することにより、放射状の
色彩像が回転しているごとく見える。In other words, the two electrode groups are applied with a half-cycle phase shift, or alternatively, as shown in Fig. 4, AC signals with different voltages are applied every half-cycle at a period of 15 Hz to 0.5 Hz, and the half-cycle phase is shifted. The radial color image appears to be rotating.
以下に実施例を示す。Examples are shown below.
１０個の透明電極１，２，３・・・・・・１０が扇のご
とく放射状に設けられた第一のガラス板ａの電極を有す
る面を液晶分子すが垂直配向するように処理し、扇状の
透明電極１′が一体的に設けられた第２のガラス板ａ′
の電極１′を有する面を液晶分子すが一定方向に水平配
向するように処理し、それぞれの電極１´、１，２・・
・・・・１０′が対向するようにして第１と第２のガラ
ス板ａ、 ａ´間に液晶す例えばｐ′−メトキシベンジ
リデン−ｐ−ｎ−ブチルアニリン４重量部とｐ´ｎ−ブ
トキシベンジリデン−ｐ−シアノアニリン１重量部を混
合してなる誘電異方性が正のネマチック液晶を厚さ例え
ば８μｍにはさみ、液晶セルとした。A first glass plate a on which ten transparent electrodes 1, 2, 3, . a second glass plate a' on which a fan-shaped transparent electrode 1' is integrally provided;
The surface having the electrodes 1' is treated so that the liquid crystal molecules are horizontally aligned in a certain direction, and each electrode 1', 1, 2...
. . . Between the first and second glass plates a and a' so that the glass plates 10' and 10' face each other, a liquid crystal is placed, for example, 4 parts by weight of p'-methoxybenzylidene-p-n-butylaniline and p'n-butoxy. A nematic liquid crystal with positive dielectric anisotropy prepared by mixing 1 part by weight of benzylidene-p-cyanoaniline was sandwiched to a thickness of, for example, 8 μm to prepare a liquid crystal cell.
更にこの液晶セルを、偏光軸が互いに直交するように配
置した２枚の偏光板ｃ、ｃ´間に、前記偏光軸と前記第
２のガラス板ａ′の水平配向処理された方向とが４５°
の角をなすように挿入し、液晶表示素子とした。Furthermore, this liquid crystal cell is placed between two polarizing plates c and c' arranged so that their polarizing axes are orthogonal to each other, so that the polarizing axis and the horizontally aligned direction of the second glass plate a' are 45 °
It was inserted so as to form a corner, and it was used as a liquid crystal display element.
そして、前記第１のガラス板ａに設けられた１０個の透
明電極１，２，３・・・・・・１０を第２図のごとく一
つおきに互いに接続し２つの組とし、この各々の組と第
２のガラス板ａ′の透明電極の１′間に、半周期は２．
０Ｖｐ−ｐで半周期は２．５Ｖｐ−ｐの５００Ｈｚの交
流矩形波を２Ｈｚの周期で、半周期位相をずらして印加
した。Then, the ten transparent electrodes 1, 2, 3...10 provided on the first glass plate a are connected to each other alternately as shown in FIG. and the transparent electrode 1' of the second glass plate a', the half period is 2.
A 500 Hz alternating current rectangular wave having a half cycle of 0 Vp-p and a half cycle of 2.5 Vp-p was applied at a cycle of 2 Hz with a half cycle phase shift.
その結果、青色と赤色に交互に色別けされた扇状の色彩
像が表示され、しかもそれは回転しているかのように見
えた。The result was a fan-shaped color image that alternated between blue and red, and appeared to be rotating.
このように本発明に係る液晶表示装置はマトリクス駆動
をすることなく簡単に色彩像を擬似的に動かすことの出
来る利用価値の高い表示装置である。As described above, the liquid crystal display device according to the present invention is a highly useful display device that can easily move a color image in a pseudo manner without matrix driving.
なお上記実症例では色彩表示の液晶表示装置に適用した
例について説明したが、白、黒等２色の液晶表示でも同
様の効果を得ることができることは説明するまでもない
ことである。In the above actual case, an example was explained in which the present invention was applied to a color liquid crystal display device, but it goes without saying that the same effect can be obtained with a two-color liquid crystal display such as white and black.
さらに上記実施例では２つの群に分けて切換えた例につ
いて説明したが、３つの群でも４つの群でも複数群に分
けて１５Ｈｚ＝０．５Ｈｚの範囲で切換えれば同様の効
果の得られることは説明するまでもないことである。Furthermore, in the above embodiment, an example was explained in which the switching is divided into two groups, but the same effect can be obtained by dividing into multiple groups, whether it is three or four groups, and switching within the range of 15 Hz = 0.5 Hz. There is no need to explain it.
第１図は本発明に係る液晶表示素子の構造の一例を示す
図、第２図は本発明に係る液晶表示装置の構成の一例を
示す図、第３図、第４図は液晶表示素子を駆動するため
の電気信号の一例を示す図である。
１’、１，２，３・・・・・・ｎ・・・・・・電極、ａ
、ａ´・・・・・・基板、ｂ・・・・・・結晶。FIG. 1 is a diagram showing an example of the structure of a liquid crystal display device according to the present invention, FIG. 2 is a diagram showing an example of the structure of a liquid crystal display device according to the present invention, and FIGS. 3 and 4 are diagrams showing an example of the structure of a liquid crystal display device according to the present invention. FIG. 3 is a diagram showing an example of an electrical signal for driving. 1', 1, 2, 3...n... Electrode, a
, a′...Substrate, b...Crystal.
Claims (1)
する液晶表示装置において、液晶を保持する２枚の基板
の少くとも一方の基板面には連続的に配置された複数個
の電極が設けられており、前記複数個の電極のうちで周
期的な位置を占める電極を一組とし、その各々の組にそ
れぞれ１５Ｈｚ乃至０．５Ｈｚの位相の異なる電気信号
を印加して、前記液晶の複屈折率を変化させるための液
晶駆動部を具備してなる液晶表示装置。1. In a liquid crystal display device that uses the change in birefringence of liquid crystal due to the application of an electric field, a plurality of continuously arranged electrodes are provided on the surface of at least one of two substrates holding liquid crystal. Among the plurality of electrodes, electrodes occupying periodic positions are set as one set, and electrical signals having different phases of 15 Hz to 0.5 Hz are applied to each set to control the liquid crystal complex. A liquid crystal display device comprising a liquid crystal driving section for changing the refractive index.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51064649A JPS5824B2 (en) | 1976-06-04 | 1976-06-04 | liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51064649A JPS5824B2 (en) | 1976-06-04 | 1976-06-04 | liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS52149092A JPS52149092A (en) | 1977-12-10 |
| JPS5824B2 true JPS5824B2 (en) | 1983-01-05 |
Family
ID=13264293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51064649A Expired JPS5824B2 (en) | 1976-06-04 | 1976-06-04 | liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5824B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0244610Y2 (en) * | 1983-12-12 | 1990-11-27 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4313202Y1 (en) * | 1967-04-04 | 1968-06-06 | ||
| JPS49111596A (en) * | 1973-02-22 | 1974-10-24 | ||
| JPS50146296A (en) * | 1974-05-13 | 1975-11-22 |
-
1976
- 1976-06-04 JP JP51064649A patent/JPS5824B2/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4313202Y1 (en) * | 1967-04-04 | 1968-06-06 | ||
| JPS49111596A (en) * | 1973-02-22 | 1974-10-24 | ||
| JPS50146296A (en) * | 1974-05-13 | 1975-11-22 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0244610Y2 (en) * | 1983-12-12 | 1990-11-27 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS52149092A (en) | 1977-12-10 |
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