JPS6242512B2 - - Google Patents
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- Publication number
- JPS6242512B2 JPS6242512B2 JP7411879A JP7411879A JPS6242512B2 JP S6242512 B2 JPS6242512 B2 JP S6242512B2 JP 7411879 A JP7411879 A JP 7411879A JP 7411879 A JP7411879 A JP 7411879A JP S6242512 B2 JPS6242512 B2 JP S6242512B2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- column
- row
- liquid crystal
- row electrode
- 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
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- 239000004973 liquid crystal related substance Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 15
- 239000011159 matrix material Substances 0.000 claims description 11
- 230000003111 delayed effect Effects 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 3
- 239000000758 substrate Substances 0.000 description 15
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- OTVRYZXVVMZHHW-FNOPAARDSA-N (8s,9s,10r,13r,14s,17r)-3-chloro-10,13-dimethyl-17-[(2r)-6-methylheptan-2-yl]-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1h-cyclopenta[a]phenanthrene Chemical compound C1C=C2CC(Cl)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 OTVRYZXVVMZHHW-FNOPAARDSA-N 0.000 description 1
- 239000004988 Nematic liquid crystal Substances 0.000 description 1
- 235000005811 Viola adunca Nutrition 0.000 description 1
- 240000009038 Viola odorata Species 0.000 description 1
- 235000013487 Viola odorata Nutrition 0.000 description 1
- 235000002254 Viola papilionacea Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
Description
【発明の詳細な説明】
本発明は、マトリツクツス表示液晶パネルを用
い、十文字表示する場合の交叉点にも電圧が印加
される様なスタチツク駆動方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a static driving method using a matrix display liquid crystal panel in which a voltage is also applied to the intersection point when displaying a cross.
ある物体の位置を十文字の交点で示す様な目的
に、用いられる表示素子として、マトリツクツス
表示液晶パネルが、CRT、発光ダイオードパネ
ル、螢光表示パネル、プラズマ表示パネルに比
べ、駆動電圧、消費電力、視認性の点で優れてい
る。特に、飛行機等の乗り物に搭載するものとし
ては、マトリツクツス表示液晶パネルが適してい
る。 Matrix display liquid crystal panels are used as display elements for purposes such as showing the position of a certain object by the intersection of a cross, and have lower driving voltage, power consumption, and Excellent visibility. In particular, matrix display liquid crystal panels are suitable for mounting on vehicles such as airplanes.
マトリツクツス表示液晶パネルによる十文字表
示に関する具体的な駆動方法についての発表は、
現時点ではなされていない。十文字表示では、十
文字表示する電極部分にのみ電圧が印加されるよ
うに電気信号を印加すればよい。具体的には十文
字表する選択列電極と選択行電極以外の列電極及
び行電極には同一の電気信号Ａを印加し、選択列
電極に印加する電気信号Ｂと選択行電極に印加す
る電気信号Ｃは、電気信号Ａと異なる様にして、
各列電極と各行電極に電気信号を印加すればよ
い。この場合、十文字の交点に印加される電圧波
形は、電気信号Ｂと電気信号Ｃにより決められ
る。選択列電極及び選択行電極上の各表示点及び
選択列電極と選択行電極の交点の応答特性がほぼ
同じである様にするためには、これら十文字表示
する各点に印加される電圧波形の実効値が同じで
あらねばならない。 For presentations on specific driving methods for cross-shaped displays using matrix display liquid crystal panels,
This has not been done at this time. In the cross display, it is sufficient to apply an electric signal so that a voltage is applied only to the electrode portion displaying the cross. Specifically, the same electric signal A is applied to column electrodes and row electrodes other than the selected column electrode and the selected row electrode represented by a cross, and the electric signal B applied to the selected column electrode and the electric signal applied to the selected row electrode are C is made to be different from the electric signal A,
An electrical signal may be applied to each column electrode and each row electrode. In this case, the voltage waveform applied to the intersection of the crosses is determined by the electrical signals B and C. In order to make the response characteristics of each display point on the selected column electrode and the selected row electrode and the intersection of the selected column electrode and the selected row electrode almost the same, it is necessary to The effective values must be the same.
本発明の目的は、用いる電圧波形の電圧値が２
値で十文字表示の各表示点に印加される電圧波形
の実効値が同じである駆動方法を提供することに
ある。 It is an object of the present invention that the voltage value of the voltage waveform used is 2
It is an object of the present invention to provide a driving method in which the effective values of voltage waveforms applied to each display point of a cross-shaped display are the same.
本発明の駆動方法は、列電極群と行電極群を直
交させたマトリツクツス表示液晶パネルを用い、
一本の列電極と一本の行電極を選択し十文字に表
示するスタチツクな駆動方法において、前記選択
した一本の列電極を除く前記列電極群及び、前記
選択した一本の行電極を除く前記行電極群に、デ
ユーテイ1/2の直流矩形波あるいは、交流矩形波
の電気信号S1を印加し、前記選択した一本の列電
極に前記、電気信号S1に対し、位相が2/3π進ん
だ（遅れた）電気信号S2を印加し、前記選択した
一本の行電極に前記、電気信号S1に対し、位相が
2/3π遅れた（進んだ）電気信号S3を印加するこ
とから構成されている。 The driving method of the present invention uses a matrix display liquid crystal panel in which column electrode groups and row electrode groups are orthogonal to each other.
In a static driving method in which one column electrode and one row electrode are selected and displayed in a cross pattern, the column electrode group excluding the selected one column electrode and the selected one row electrode are excluded. A DC rectangular wave or AC rectangular wave electrical signal S 1 with a duty of 1/2 is applied to the row electrode group, and a phase of 2/2 with respect to the electrical signal S 1 is applied to the selected column electrode. An electrical signal S 2 that is advanced (delayed) by 3π is applied to the selected row electrode so that the phase is different from that of the electrical signal S 1 .
It consists of applying an electrical signal S 3 delayed (advanced) by 2/3π.
以下、本発明について実施例により詳説する。 Hereinafter, the present invention will be explained in detail with reference to Examples.
第１図は、本発明の駆動方法を説明するための
実施例に用いるコレステリツク―ネマチツク相転
移効果を利用したゲスト・ホスト型カラーマトリ
ツクス表示液晶パネルの構造を模式的に示したも
のである。前面電極基板はガラス基板１に、列電
極群２がつけられ、背面電極基板はガラス基板７
に行電極群６がつけられており、列電極群と、行
電極群が、互いに直交しているような配置に、こ
れら一対の電極基板は組み立てられている。電極
基板の液晶４と接する面は、垂直配向処理膜
（FS150膜、大日本インキ製）が被膜されてい
る。FS150膜は、FS150の0.03重量パーセント水
溶液に、電極基板を約30分間浸した後、乾燥さ
せ、120℃15分焼成して形成される。液晶４は、
正の誘電異方法をもつネマチツク液晶Ｅ８
（BDH社製・英国）とコレステリツク液晶コレス
テリール・クロライドを、９：１の重量比で混合
したものであり、この液晶材に二色性染料GR17
（日本感光色素研究所製）を、0.5重量パーセント
添加している。液晶層厚を16μｍになる様に、前
記、一対の電極基板は組み立てられている。電界
が印加されてない時、液晶分子は、電極基板面近
傍では、垂直配向をしているが、バルク中では、
ら旋軸が電極基板面に垂直なら旋構造の配向をし
ている。この場合、二色性染料分子の吸収軸は、
バルク中で電極基板面に平行で、ら旋構造してい
る。入射した光は、二色性染料GR―17固有の波
長領域で光が吸収され、反射板８で反射された光
は、青紫色として観察される。閾値電圧（10ボル
ト）以上の電圧が印加された場合、液晶分子のら
旋構造配向が解消され、液晶分子の長軸方向は、
電界方向、即ち、電極基板面に垂直な方向に配向
し、この配向に付随して、二色性染料の吸収軸
も、電極基板面に垂直となる。この場合、入射し
た光は、二色性染料の吸収軸と平行であるため、
吸収されず、反射板８の色（白色）が観察され
る。 FIG. 1 schematically shows the structure of a guest-host type color matrix display liquid crystal panel utilizing the cholesteric-nematic phase transition effect used in an embodiment for explaining the driving method of the present invention. The front electrode substrate is a glass substrate 1 with a column electrode group 2 attached, and the back electrode substrate is a glass substrate 7.
A row electrode group 6 is attached to the electrode substrate, and these pairs of electrode substrates are assembled in such a manner that the column electrode group and the row electrode group are orthogonal to each other. The surface of the electrode substrate in contact with the liquid crystal 4 is coated with a vertical alignment treatment film (FS150 film, manufactured by Dainippon Ink). The FS150 film is formed by soaking the electrode substrate in a 0.03 weight percent aqueous solution of FS150 for about 30 minutes, drying it, and baking it at 120°C for 15 minutes. The liquid crystal 4 is
Nematic liquid crystal E8 with positive dielectric anisotropy
(manufactured by BDH, UK) and cholesteric liquid crystal cholesteryl chloride in a weight ratio of 9:1, and dichroic dye GR17 is added to this liquid crystal material.
(manufactured by Japan Photosensitive Color Research Institute) is added in an amount of 0.5% by weight. The pair of electrode substrates are assembled so that the liquid crystal layer thickness is 16 μm. When no electric field is applied, liquid crystal molecules are vertically aligned near the electrode substrate surface, but in the bulk,
If the helical axis is perpendicular to the electrode substrate surface, it has a helical structure orientation. In this case, the absorption axis of the dichroic dye molecule is
In the bulk, it is parallel to the electrode substrate surface and has a spiral structure. The incident light is absorbed in a wavelength range specific to the dichroic dye GR-17, and the light reflected by the reflecting plate 8 is observed as a blue-violet color. When a voltage higher than the threshold voltage (10 volts) is applied, the helical structural orientation of the liquid crystal molecules is canceled, and the long axis direction of the liquid crystal molecules is
The dichroic dye is oriented in the direction of the electric field, that is, in a direction perpendicular to the electrode substrate surface, and accompanying this orientation, the absorption axis of the dichroic dye is also perpendicular to the electrode substrate surface. In this case, the incident light is parallel to the absorption axis of the dichroic dye, so
It is not absorbed and the color (white) of the reflecting plate 8 is observed.
第２図は、ｍ行ｎ列マトリツクス表示液晶パネ
ルにおいて、ｉ行目とｊ列目の電極による十文字
表示を示したものである。第２図の斜線で示す様
に十文字は、正方形のドツトで示される。 FIG. 2 shows a cross-shaped display using electrodes in the i-th row and the j-th column in an m-row, n-column matrix display liquid crystal panel. As shown by diagonal lines in FIG. 2, the cross is represented by a square dot.
第３図の電気信号を用い、各行電極、各列電
極、及び各ドツトに印加される電気信号について
以下に述べる。ｉ行目を除く行電極群及びｊ列目
を除く列電極群には、波高値Ｖ＝15ボルト、周波
数100Hz、デユーテイ1/2の直流矩形波の電気信号
Ｓ１を印加する。ｊ列目の列電極には、電気信号
Ｓ１に対し位相が2/3π進んだ電気信号Ｓ２を印
加し、ｊ行目の行電極には、電気信号Ｓ１に対し
位相が2/3π遅れた電気信号Ｓ３を印加する。こ
のような３種類の電気信号を印加した場合、行電
極群と列電極群の各交点のドツトには、〔ｋ―
ｌ〕，〔ｋ―ｊ〕，〔ｉ―ｌ〕，〔ｉ―ｊ〕の電気信号
が印加される。電気信号〔ｋ―ｌ〕は、ｉ行目及
びｊ列目の電極以外の任意のｋ行電極とｌ列電極
の交点に印加されるものを示しているが、実効電
圧は０ボルトである。電気信号〔ｋ―ｊ〕は、ｉ
行目を除く任意のｋ行電極とｊ列電極の交点に印
加されるものを示しているが、実効電圧は約
12.24ボルトである。電気信号〔ｉ―ｌ〕は、ｉ
行電極と、ｊ列電極を除く任意のｌ列電極の交点
に印加されるものを示しているが、実効電圧は、
約12.24ボルトである。電気信号〔ｉ―ｊ〕は、
行電極とｊ列電極の交点に印加されるものを示し
ているが、実効電圧は、約12.24ボルトである。
以上述べた事から明らかな様に、ｉ行電極上及び
ｊ列電極上及びｉ行電極とｊ列電極の交点の各ド
ツトには、実効電圧12.24ボルトの電圧が印加さ
れ、それ以外の各ドツトに印加される電圧は０ボ
ルトである。従つて、上述した実施例による駆動
方法を用いれば、色地に交点も白色の白色十文字
表示が可能である。又、十文字の各点に印加され
る電圧値が同じであるので応答特性も、ほぼ同じ
である。また、第３図から明らかな様に、用いる
電気信号の電圧値は２値であり、従つて、回路素
子数が最小ですむ利点がある。 Using the electrical signals shown in FIG. 3, the electrical signals applied to each row electrode, each column electrode, and each dot will be described below. A DC rectangular electric signal S1 having a peak value V of 15 volts, a frequency of 100 Hz, and a duty of 1/2 is applied to the row electrode groups except for the i-th row and the column electrode groups except for the j-th column. An electric signal S2 whose phase is 2/3π ahead of the electric signal S1 is applied to the column electrode of the jth column, and an electric signal whose phase is delayed by 2/3π with respect to the electric signal S1 is applied to the row electrode of the jth row. Apply signal S3. When these three types of electrical signals are applied, the dots at the intersections of the row electrode group and the column electrode group have [k-
Electric signals of [l], [k-j], [i-l], and [i-j] are applied. The electric signal [k-l] is applied to the intersection of any k-row electrode and l-column electrode other than the electrodes in the i-th row and j-th column, and the effective voltage is 0 volts. The electric signal [k-j] is i
The voltage applied to the intersection of any k-row electrode and j-column electrode except for the row is shown, but the effective voltage is approximately
It is 12.24 volts. The electric signal [i-l] is i
The voltage applied to the intersection of the row electrode and any l-column electrode except the j-column electrode is shown, but the effective voltage is
It is approximately 12.24 volts. The electrical signal [i-j] is
The effective voltage, shown as being applied to the intersection of the row electrode and the j-column electrode, is approximately 12.24 volts.
As is clear from the above description, an effective voltage of 12.24 volts is applied to each dot on the i-row electrode, the j-column electrode, and at the intersection of the i-row electrode and the j-column electrode, and to each other dot. The voltage applied to is 0 volts. Therefore, by using the driving method according to the embodiment described above, it is possible to display a white cross character in which the intersections are also white on a colored background. Furthermore, since the voltage value applied to each point of the cross is the same, the response characteristics are also almost the same. Further, as is clear from FIG. 3, the voltage value of the electrical signal used is binary, and therefore there is an advantage that the number of circuit elements can be minimized.
以上、本発明について、実施例を用いて説明し
たが、第３図を使つた実施例の説明で、電気信号
Ｓ１，Ｓ３を入れかえても、十文字表示する各ド
ツトに12.24ボルトの電圧を印加することができ
る。又、実施例では、直流矩形波の電気信号を用
いたが、±7.5ボルトの交流矩形波の電気信号を用
いた駆動方法によつても、十文字表示する各ドツ
トに12.24ボルトの電圧を印加することができ
る。又、本発明の実施例では、１個の十文字表示
について述べたが、複数個の十文字表示する場合
には、複数本の行電極に各々電気信号Ｓ３，Ｓ２
を印加すればよい。本発明の実施例で用いた液晶
材、配向処理方法、及び電気信号の周波数、波高
値は、本発明の特許請求の範囲を制限するもので
ないことは言うまでもない。又、本発明の駆動方
法は、実施例で用いたコレステリツク―ネマチツ
ク相転移効果を利用したゲスト・ホスト型カラー
マトリツクス表示液晶パネルにのみ有効な駆動方
法ではなく、他の液晶の電気光学効果を利用した
マトリツクス表示液晶パネルについても有効な駆
動方法である。又、本発明の実施例では、電気信
号Ｓ１，Ｓ２，Ｓ３が互いに2/3πずつずれてい
るが、位相が2/3πより若干大きく、あるいは小
さくずれていても、本発明の目的を大きく損なう
ことはない。 The present invention has been explained above using an embodiment, but in the explanation of the embodiment using FIG. be able to. Further, in the embodiment, a DC rectangular wave electric signal was used, but a voltage of 12.24 volts was applied to each dot displayed in a cross display by a driving method using an AC rectangular wave electric signal of ±7.5 volts. be able to. Furthermore, in the embodiment of the present invention, one cross character display has been described, but when multiple cross characters are displayed, electrical signals S3 and S2 are applied to a plurality of row electrodes, respectively.
Just apply. It goes without saying that the liquid crystal material, alignment treatment method, frequency and peak value of the electrical signal used in the examples of the present invention do not limit the scope of the claims of the present invention. Furthermore, the driving method of the present invention is not a driving method that is effective only for a guest-host type color matrix display liquid crystal panel that utilizes the cholesteric-nematic phase transition effect used in the examples, but is also effective for driving electro-optical effects of other liquid crystals. This is also an effective driving method for the matrix display liquid crystal panel used. Further, in the embodiment of the present invention, the electrical signals S1, S2, and S3 are shifted from each other by 2/3π, but even if the phases are shifted slightly larger or smaller than 2/3π, the purpose of the present invention is greatly impaired. Never.
第１図は、本発明の実施例を説明するために用
いた液晶パネルの模式構造図を、第２図は、実施
例の駆動方法による十文字表示例を示す模式図
を、第３図は、各列電極、各行電極に印加する電
気信号及び各ドツトに印加される電気信号の波形
を示す。１，７はガラス基板、２は列電極、６は
行電極、３，５は垂直配向処理膜、４は二色性染
料が添加されたコレステリツク液晶、８は反射
板、１〜ｉ〜ｍは行電極、１〜ｊ〜ｎは列電極、
ｉ，ｊは表示電極、Ｓ１，Ｓ２，Ｓ３は行電極、
列電極に印加する電気信号、〔ｋ―ｌ〕，〔ｋ―
ｊ〕，〔ｉ―ｌ〕，〔ｉ―ｊ〕は各ドツトに印加され
る電気信号。
FIG. 1 is a schematic structural diagram of a liquid crystal panel used to explain an embodiment of the present invention, FIG. 2 is a schematic diagram showing an example of a cross-shaped display by the driving method of the embodiment, and FIG. The waveforms of the electrical signals applied to each column electrode, each row electrode, and the electrical signals applied to each dot are shown. 1 and 7 are glass substrates, 2 is a column electrode, 6 is a row electrode, 3 and 5 are vertical alignment treatment films, 4 is a cholesteric liquid crystal added with dichroic dye, 8 is a reflection plate, 1 to i to m are Row electrodes, 1 to j to n are column electrodes,
i, j are display electrodes, S1, S2, S3 are row electrodes,
Electrical signals applied to the column electrodes, [k-l], [k-
j], [i-l], and [i-j] are electrical signals applied to each dot.
Claims (1)
ス表示液晶パネルを用い、一本の列電極と一本の
行電極を選択し十文字に表示するスタチツクな駆
動方法において、前記選択した一本の列電極を除
く前記列電極群及び、前記選択した一本の行電極
を除く前記行電極群に、デユーテイ1/2の直流矩
形波あるいは、交流矩形波の電気信号S1を印加
し、前記選択した一本の列電極に前記、電気信号
S1に対し、位相が2/3π進んだ（遅れた）電気信
号S2を印加し、前記選択した一本の行電極に前
記、電気信号S1に対し、位相が2/3π遅れた（進
んだ）電気信号S3を印加することを特徴とするマ
トリツクス表示液晶パネルの駆動方法。1. In a static driving method in which one column electrode and one row electrode are selected and displayed in a cross pattern using a matrix display liquid crystal panel in which a group of column electrodes and a group of row electrodes are orthogonal to each other, the selected one column is An electrical signal S1 of a DC rectangular wave or an AC rectangular wave with a duty of 1/2 is applied to the column electrode group excluding the electrodes and the row electrode group excluding the selected one row electrode, and Said electrical signal to one column electrode
An electric signal S 2 whose phase is 2/3π ahead (lag) with respect to S 1 is applied to the selected one row electrode, and an electric signal S 2 whose phase is delayed (2/3π) with respect to S 1 is applied to the selected row electrode. A method for driving a matrix display liquid crystal panel characterized by applying an electrical signal S3 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7411879A JPS55166693A (en) | 1979-06-12 | 1979-06-12 | Driving method of matrixxdisplay liquid crystal panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7411879A JPS55166693A (en) | 1979-06-12 | 1979-06-12 | Driving method of matrixxdisplay liquid crystal panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55166693A JPS55166693A (en) | 1980-12-25 |
| JPS6242512B2 true JPS6242512B2 (en) | 1987-09-08 |
Family
ID=13537964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7411879A Granted JPS55166693A (en) | 1979-06-12 | 1979-06-12 | Driving method of matrixxdisplay liquid crystal panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55166693A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6417959U (en) * | 1987-07-21 | 1989-01-30 |
-
1979
- 1979-06-12 JP JP7411879A patent/JPS55166693A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6417959U (en) * | 1987-07-21 | 1989-01-30 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55166693A (en) | 1980-12-25 |
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