JPS59147386A - Liquid crystal display - Google Patents
Liquid crystal displayInfo
- Publication number
- JPS59147386A JPS59147386A JP2067283A JP2067283A JPS59147386A JP S59147386 A JPS59147386 A JP S59147386A JP 2067283 A JP2067283 A JP 2067283A JP 2067283 A JP2067283 A JP 2067283A JP S59147386 A JPS59147386 A JP S59147386A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- transmittance
- layer
- gradations
- 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
Landscapes
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、印加電圧の変化によって透過率を変化させ、
階調（色の濃淡）をとり、画面表示を行なう液晶表示装
置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention changes the transmittance by changing the applied voltage,
The present invention relates to a liquid crystal display device that performs screen display by adjusting gradations (shades of colors).
従来例の構成とその問題点
液晶は、光の透過率変化で所定のパターンを表示するも
のであるが、ここで、例えば＃Ｊ像表示などを考える時
、モノクロ表示であると、その透過率を何段階かに変化
させることにより、画面の濃淡を得ることができる。ま
た、ＲＧＢなどでのカラー表示を考える時、各フィルタ
ーの透過率を変化させると、その混色で多色表示が可能
となる。Conventional configuration and its problems Liquid crystals display a predetermined pattern by changing the transmittance of light, but when considering, for example, a #J image display, if it is a monochrome display, the transmittance changes By changing the gradation in several stages, the shading of the screen can be obtained. Furthermore, when considering color display using RGB, etc., if the transmittance of each filter is changed, multicolor display is possible by mixing the colors.
このような透過率変化をとる方法として、従来は第１図
に示すような△■＝Ｖ２−ｖ１ の範囲を何段階かに分
割し、印加電圧を変化させて各々の透過率の違いで階調
をとっていた。しかし、この方法では、液晶の本来もっ
ている特性の為△Ｖはあまり大きな値はとれず、それに
伴って階調を何段階にも多くとるということは不可能で
あった。丑だ、液晶はセルばらつき、周囲温度によって
ｖ２゜■１が変動するため階調はさらに制現されていた
。Conventionally, the method of obtaining such changes in transmittance is to divide the range of △■ = V2 - v1 into several stages as shown in Figure 1, and change the applied voltage to change the range depending on the difference in transmittance. He was in tune. However, in this method, due to the inherent characteristics of liquid crystal, ΔV cannot take a very large value, and accordingly, it is impossible to increase the number of gradations to many levels. Unfortunately, since v2゜■1 of liquid crystal varies depending on cell variations and ambient temperature, the gradation was even more pronounced.
発明の目的
本発明は、上記従来の欠点に鑑みてなされたもので、従
来よりもより安定で、しかも多くの階調を得られるよう
にすることを目的とするものである。OBJECTS OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks of the conventional art, and it is an object of the present invention to make it possible to obtain more stable and more gradations than the conventional art.
発明の構成
本発明は電圧−透過率特性の異なる液晶表示層を２層以
上で構成し、各々の層を別々に駆動し、各々の層の透過
率の組み合わせで１・−タル透過率を設定するもので、
このような構成とすることで１層での階調はあまりとら
なくても組み合わせでの１・−タル的な階調は多く得ら
れることとなり、従来よりも多くの階調を安定に得られ
ることになる。Structure of the Invention The present invention consists of two or more liquid crystal display layers with different voltage-transmittance characteristics, each layer is driven separately, and the 1-tal transmittance is set by a combination of the transmittances of each layer. to do,
With this configuration, even if one layer does not have many gradations, many 1-tal gradations can be obtained in combination, and more gradations can be stably obtained than before. It turns out.
実施例の説明 以ド、本発明の一実施例を第２図を参照して説明する。Description of examples Hereinafter, one embodiment of the present invention will be described with reference to FIG.
図において、１は第１の液晶表示層で、イ・マチイック
液晶層１ａと、この両面に設けた透明電極＃Ｉ！ｉ！′
１ｂと、この透明電極膜１ｂの両面に設けたガラス基板
１Ｃとにより構成している。２は第１の液晶表示層１と
は電圧−透過率特性の異なる第２の液晶表示層で、ネマ
ティック液晶層２ａ。In the figure, 1 is a first liquid crystal display layer, which includes an automatic liquid crystal layer 1a and transparent electrodes #I! provided on both sides of the liquid crystal layer 1a. i! ′
1b, and glass substrates 1C provided on both sides of the transparent electrode film 1b. 2 is a second liquid crystal display layer having voltage-transmittance characteristics different from that of the first liquid crystal display layer 1, and is a nematic liquid crystal layer 2a.
透明電極膜２ｂ、ガラス基板２Ｃとにより構成している
。３は偏光板である。It is composed of a transparent electrode film 2b and a glass substrate 2C. 3 is a polarizing plate.
以上の構成において、表１に示す如く第１の液晶表示層
１０階調を４段階、第２の液晶表示層２の階調を４段階
とれるとすると、１・−タル透過率としては表２に示す
ように１６階調がとれることになる。例えば、第１の液
晶表示層１を印加電圧１とし、透過率Ａとし第２の液晶
表示層２を透過率Ｅ、Ｆ、Ｇ、Ｈと変化させると、トー
タル透過率は、Ａ ｘ Ｅ 、 Ａ ｘ Ｆ 、 Ａ
ｘ Ｇ 、 Ａ ｘ Ｈとなる。In the above configuration, assuming that the first liquid crystal display layer 10 can have four gradations and the second liquid crystal display layer 2 can have four gradations as shown in Table 1, the 1-tal transmittance is as shown in Table 2. As shown in the figure, 16 gradations can be obtained. For example, if the first liquid crystal display layer 1 has an applied voltage of 1 and a transmittance of A, and the second liquid crystal display layer 2 has a transmittance of E, F, G, and H, the total transmittance is A x E, A x F, A
x G, A x H.
これは５ｇｉの液晶表示層１における透過率Ｂ、Ｃ。These are transmittances B and C in the liquid crystal display layer 1 of 5gi.
Ｄの時も同様である。このようにして、各層での階調は
少なくてもトータルとして多くの階調を得ることができ
、安定な階調を確実にとることが［＋Ｔ能となる。The same applies to D. In this way, even if the number of tones in each layer is small, it is possible to obtain a large number of tones in total, and ensuring stable tones is a [+T function].
表 １
表 ２
なお、従来の構成において、本発明の実施例に示すよう
な１６通りの階調を得ようとすると、第１図に示すｌへ
ｖ−ｖ２−■１ の間を１６等分することとなり、各電
圧を△■１ ・・・・・■１６とすると、／＼ｖｎＦ１
−／Ｗｎ の［１］が非常に狭くなり、周囲温度製造ば
らつきで第１図に示す曲線が少しずれるとｌへ■１ ・
・・・、へ■１６の値がずれ、△■ｏの透過率のつもり
か△ｖｎ−１やΔ■ｎ＋１ にずれることがある。Table 1 Table 2 Note that in the conventional configuration, when attempting to obtain 16 gradations as shown in the embodiment of the present invention, the space between v-v2-■1 shown in FIG. 1 is divided into 16 equal parts. Therefore, if each voltage is △■1 ...■16, /\vnF1
-/Wn [1] becomes very narrow and the curve shown in Figure 1 deviates slightly due to ambient temperature manufacturing variations, it becomes l ■1 ・
..., the value of ■16 may deviate, and it may deviate to Δvn-1 or Δ■n+1, whether it is intended to be the transmittance of Δ■o.
この点、本発明のようにすると１層では△Ｖを４等分で
よく、△Ｖｎ＋１−△Ｖｎ の「１］が大きくとれ、電
圧のほらつき範囲も余裕をとることができる。In this regard, according to the present invention, ΔV can be divided into four equal parts in one layer, and the value of ``1'' of ΔVn+1-ΔVn can be made large, and the range of voltage fluctuation can be made more generous.
従って、より安定で確実に階調をとることができる。Therefore, it is possible to obtain more stable and reliable gradations.
発明の効果
り、」二の説明から明らかなように本発明は電圧−透過
率特性の異なる２層以上の液晶表示層を有し、各々の層
の透過率の組み合わせで階調をとるので各層での階調は
少なくてもトータルとして多くの階調を得ることができ
、又、各層での階調を少なくすることができる結果、安
定で確実に階調をとることができるなどすぐれた効果を
発揮する。As is clear from the explanation in Section 2 of "Effects of the Invention," the present invention has two or more liquid crystal display layers with different voltage-transmittance characteristics, and the gradation is determined by the combination of the transmittance of each layer. Even if the number of gradations is small, it is possible to obtain many gradations in total, and as a result of being able to reduce the number of gradations in each layer, it is possible to obtain stable and reliable gradation, which is an excellent effect. demonstrate.
第１図は液晶表示装置の電圧−透過率特性図、第２図は
本発明の一実施例にかかる液晶表示装置の断面図である
。
１・・・・・第１の液晶表示層、２・・・・・・第２の
液晶表示層。FIG. 1 is a voltage-transmittance characteristic diagram of a liquid crystal display device, and FIG. 2 is a sectional view of a liquid crystal display device according to an embodiment of the present invention. 1...First liquid crystal display layer, 2...Second liquid crystal display layer.
Claims (1)
各々の層を別々に駆動し、各々の層の透過率の組み合わ
せで階調をとる液晶表示装置。Has a liquid crystal display with two or more layers with different voltage-transmittance characteristics,
A liquid crystal display device that drives each layer separately and achieves gradations by combining the transmittance of each layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2067283A JPS59147386A (en) | 1983-02-10 | 1983-02-10 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2067283A JPS59147386A (en) | 1983-02-10 | 1983-02-10 | Liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59147386A true JPS59147386A (en) | 1984-08-23 |
Family
ID=12033686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2067283A Pending JPS59147386A (en) | 1983-02-10 | 1983-02-10 | Liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59147386A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62254190A (en) * | 1986-04-28 | 1987-11-05 | セイコーエプソン株式会社 | Projection type liquid crystal display unit |
| JPH02127617A (en) * | 1988-11-07 | 1990-05-16 | Sharp Corp | Liquid crystal display panel |
| JP2008546018A (en) * | 2005-06-01 | 2008-12-18 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Dual display device |
| JP2019015929A (en) * | 2017-07-10 | 2019-01-31 | スタンレー電気株式会社 | Liquid crystal display device |
-
1983
- 1983-02-10 JP JP2067283A patent/JPS59147386A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62254190A (en) * | 1986-04-28 | 1987-11-05 | セイコーエプソン株式会社 | Projection type liquid crystal display unit |
| JP2552114B2 (en) * | 1986-04-28 | 1996-11-06 | セイコーエプソン株式会社 | Projection type liquid crystal display |
| JPH02127617A (en) * | 1988-11-07 | 1990-05-16 | Sharp Corp | Liquid crystal display panel |
| JP2008546018A (en) * | 2005-06-01 | 2008-12-18 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Dual display device |
| JP2019015929A (en) * | 2017-07-10 | 2019-01-31 | スタンレー電気株式会社 | Liquid crystal display device |
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