JP2658282B2 - Liquid crystal display - Google Patents
Liquid crystal displayInfo
- Publication number
- JP2658282B2 JP2658282B2 JP63263390A JP26339088A JP2658282B2 JP 2658282 B2 JP2658282 B2 JP 2658282B2 JP 63263390 A JP63263390 A JP 63263390A JP 26339088 A JP26339088 A JP 26339088A JP 2658282 B2 JP2658282 B2 JP 2658282B2
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- Prior art keywords
- liquid crystal
- dichroic dye
- display device
- transparent
- crystal display
- Prior art date
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- 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】 〔概 要〕 液晶表示装置に関し、 観察者の目の視角方向によって表示面の色が変動する
のを防止することを目的とし、 対向する一対の透明絶縁性基板上にそれぞれ透明電極
と配向膜を積層し、該基板間の空間部に液晶を封入した
少なくとも一つの液晶パネルと、該液晶パネル上に偏光
板を介して前記透明絶縁性基板の表面に対して二色性色
素の分子を垂直に配向させて成る二色性色素層とを重ね
て配置した構成とする。DETAILED DESCRIPTION OF THE INVENTION [Summary] A liquid crystal display device is provided on a pair of opposing transparent insulating substrates for the purpose of preventing a color of a display surface from fluctuating according to a viewing angle direction of an observer's eyes. At least one liquid crystal panel in which a transparent electrode and an alignment film are laminated and a liquid crystal is sealed in a space between the substrates, and two colors are applied to the surface of the transparent insulating substrate via a polarizing plate on the liquid crystal panel. And a dichroic dye layer formed by orienting the molecules of the chromatic dye vertically.
本発明は液晶表示装置に関する。 The present invention relates to a liquid crystal display device.
液晶表示装置に於いては、視角（表示面の垂直方向を
基準とした観察者の表示面を見る角度）が大きくなる
と、表示色が変化して見づらくなるので視角変化による
色付きを抑え、表示品質を上げることが要望されてい
る。In a liquid crystal display device, when the viewing angle (the angle at which the observer looks at the display surface with reference to the vertical direction of the display surface) increases, the display color changes, making it difficult to see. It is desired to raise
従来の液晶表示装置としては、光の入射方向側よりみ
て２枚の偏光板に挟まれた一対の透明絶縁性基板にそれ
ぞれ透明電極と配向膜を積層し、それらの透明絶縁性基
板間に液晶を封入し、配向膜に配向処理を行うことで、
上側の偏光板と下側の偏光板に挟まれた透明基板内の液
晶のツイスト角度が下側の偏光板を到る程、90度ツイス
トされるTN（Twisted Nematic）型液晶表示装置、或い
は90度以上ツイストされるSTN（Super Twisted Nemati
c）型液晶表示装置、更にSTN型液晶を２層重ねた構成の
液晶表示装置（DSTN型）がある。As a conventional liquid crystal display device, a transparent electrode and an alignment film are laminated on a pair of transparent insulating substrates sandwiched between two polarizing plates as viewed from the light incident direction side, and a liquid crystal is interposed between the transparent insulating substrates. By encapsulating and performing alignment processing on the alignment film,
A TN (Twisted Nematic) liquid crystal display device, or 90, which is twisted 90 degrees as the twist angle of the liquid crystal in the transparent substrate sandwiched between the upper and lower polarizing plates reaches the lower polarizing plate. STN (Super Twisted Nemati)
There is a c) type liquid crystal display device, and a liquid crystal display device (DSTN type) having a configuration in which two layers of STN type liquid crystal are stacked.
第８図は従来のDSTN型液晶表示装置の断面図を示す。
この図に於いては対向する一対の透明ガラス基板1A,1B
の対向面には、インジウム・錫酸化物（ITO）よりなる
線条の透明電極2A,2Bが互いに直交するように形成さ
れ、更に該電極2A,2Bを被覆するように配向膜3A,3Bが形
成され、かつ基板周辺端部が封止され、この封止空間内
に90度以上の角度でツイストされたネマティック液晶４
が封入され、表示用の第１の液晶パネル５が形成されて
いる。FIG. 8 is a sectional view of a conventional DSTN type liquid crystal display device.
In this figure, a pair of transparent glass substrates 1A and 1B
The transparent electrodes 2A, 2B of a line made of indium tin oxide (ITO) are formed so as to be orthogonal to each other, and alignment films 3A, 3B are formed so as to cover the electrodes 2A, 2B. The nematic liquid crystal 4 formed and sealed at the peripheral edge of the substrate, and twisted at an angle of 90 degrees or more in the sealed space.
Are enclosed, and a first liquid crystal panel 5 for display is formed.
この第１の液晶パネル５上には、補償用の第２の液晶
パネルが対向配置される。このパネルは一対の透明ガラ
ス基板6A,6Bを対向配置し、その対向面には配向膜7A,7B
が形成され、かつ基板周辺端部が封止され、この封止空
間内に前記液晶４がツイストされた方向と逆方向に同一
のツイスト角度でツイストされたネマティック液晶８が
封入されている。そして第１の液晶パネル５の下部、お
よび第２の液晶パネル９の上部に偏光方向を直交するよ
うに一対の偏光板10,11が設置され、これにより液晶表
示装置12が形成されている。On the first liquid crystal panel 5, a second liquid crystal panel for compensation is disposed to face. In this panel, a pair of transparent glass substrates 6A and 6B are arranged to face each other, and alignment films 7A and 7B
Is formed, and the peripheral edge of the substrate is sealed. A nematic liquid crystal 8 twisted at the same twist angle in a direction opposite to the direction in which the liquid crystal 4 is twisted is sealed in the sealed space. A pair of polarizers 10 and 11 are provided below the first liquid crystal panel 5 and above the second liquid crystal panel 9 so that the polarization directions are orthogonal to each other, thereby forming a liquid crystal display device 12.
ところで上記した従来の液晶表示装置は、第９図に示
すように表示面13の垂直方向を基準とした観察者の表示
面を見る角度（視角）θが大きくなると、液晶分子の複
屈折の大きさが変化するため、表示の色が変わり、見づ
らくなるという欠点があった。例えばこの装置では、ラ
イン数を400程度まで多くした大容量の白黒表示をする
ことが可能であるが、視角を変えると第10図に示すよう
に背景色が青くなり、見づらくなる。By the way, in the conventional liquid crystal display device described above, as shown in FIG. 9, when the angle (viewing angle) θ at which the observer looks at the display surface with respect to the vertical direction of the display surface 13 increases, the birefringence of the liquid crystal molecules increases. Therefore, there is a disadvantage that the display color changes and it becomes difficult to see. For example, this device can perform large-capacity black-and-white display in which the number of lines is increased to about 400. However, when the viewing angle is changed, the background color becomes blue as shown in FIG.
即ち、第10図はCIE色度図表で、図示するように観察
者の視角が０度の場合の色度座標14（x1,y1）から、視
角が20度の場合の色度座標15（x2,y2）、更に視角が40
度の場合の色度座標16（x3,y3）に到る程、表示色が白
色より青色に成る傾向があり、表示面が見づらくなる傾
向がある。That is, FIG. 10 is a CIE chromaticity diagram. As shown, the chromaticity coordinates 14 (x 1 , y 1 ) when the viewing angle of the observer is 0 degrees, and the chromaticity coordinates 15 when the viewing angle is 20 degrees as shown in FIG. (X 2 , y 2 ), and the viewing angle is 40
As the chromaticity coordinates 16 (x 3 , y 3 ) reach the display color, the display color tends to be bluer than white, and the display surface tends to be harder to see.
この問題はSTN型液晶表示装置に於いても同様に発生
する。This problem also occurs in the STN type liquid crystal display device.
本発明は上記した問題点を解決し、視角が変動しても
表示色に変化を生じない液晶表示装置の提供を目的とす
る。An object of the present invention is to solve the above-described problems and to provide a liquid crystal display device in which a display color does not change even when the viewing angle changes.
第１図は本発明の液晶表示装置の原理図である。 FIG. 1 is a principle view of the liquid crystal display device of the present invention.
図示するように対向する一対の透明絶縁性基板21A,21
B上にそれぞれ透明電極22A,22Bと配向膜23を積層し、該
基板間の空間部位に液晶24を封止した液晶パネル25の表
裏両面に偏光板26と、表面側の偏光板26上に前記透明絶
縁性基板表面に対して垂直に配向させた二色性色素層27
とを重ねて配置した構成とする。As shown, a pair of transparent insulating substrates 21A, 21 facing each other
The transparent electrodes 22A and 22B and the alignment film 23 are respectively laminated on B, and a polarizing plate 26 is provided on both front and back surfaces of a liquid crystal panel 25 in which a liquid crystal 24 is sealed in a space between the substrates, and a polarizing plate 26 on the front surface is provided. Dichroic dye layer 27 oriented perpendicular to the surface of the transparent insulating substrate
Are arranged so as to overlap with each other.
第２図（ａ）に示すように、二色性色素の色素分子27
Aは棒状を呈しており、その矢印ｙで示す長軸方向が矢
印ｘで示す短軸方向よりも光の吸収が大きい色素分子27
Aを、パネル25の透明絶縁基板、例えばガラス基板21A,2
1Bに対して長軸方向が垂直になるように配向し、該色素
分子に光を矢印Ａに示すように長軸方向に沿って平行
に、即ちガラス基板21A,21Bに垂直に入射させると、こ
の垂直に入射する光は殆ど色素分子27Aに吸収されな
い。As shown in FIG. 2A, the dichroic dye molecule 27
A has a rod shape, and the dye molecule 27 has a larger light absorption in the major axis direction indicated by the arrow y than in the minor axis direction indicated by the arrow x.
A, the transparent insulating substrate of the panel 25, for example, glass substrates 21A, 2
1B is oriented so that the long axis direction is perpendicular to the dye molecules, and light is incident on the dye molecules parallel to the long axis direction as shown by arrow A, that is, perpendicularly incident on the glass substrates 21A and 21B, This vertically incident light is hardly absorbed by the dye molecules 27A.
然し、第２図（ｂ）の矢印Ｂに示すように、ガラス基
板21A,21Bに対して斜めから入射する光は、液晶分子27A
に一部吸収される。例えば２色性色素として青色を吸収
する黄色系の色素分子を使用すると垂直方向（視角が０
度）から観察すると無色透明となり、視角を大きくする
と黄色になる層ができる。However, as shown by the arrow B in FIG. 2 (b), the light obliquely incident on the glass substrates 21A and 21B is reflected by the liquid crystal molecules 27A.
Is partially absorbed. For example, when a yellow dye molecule that absorbs blue light is used as a dichroic dye, a vertical direction (a viewing angle of 0
Observed from (degree), the layer becomes colorless and transparent, and when the viewing angle is increased, a layer becomes yellow.
この青色を吸収する黄色系の色素分子で形成される色
素層を有するパネルを、視角を変えると青くなるパネル
と組み合わせるとパネルの青色と、色素層の黄色が打ち
消しあい、視角により表示色の変化を生じない液晶表示
装置が得られる。When a panel with a dye layer formed of yellow-based dye molecules that absorb blue is combined with a panel that turns blue when the viewing angle is changed, the blue color of the panel and the yellow of the dye layer cancel each other, and the display color changes depending on the viewing angle. A liquid crystal display device which does not cause the problem can be obtained.
以下、図面を用いて本発明の実施例について説明す
る。Hereinafter, embodiments of the present invention will be described with reference to the drawings.
第３図は本発明の液晶表示装置の第１実施例の説明図
である。液晶パネルとして視角が大きくなると表示色が
青くなるDSTN型装置について述べる。FIG. 3 is an explanatory view of a first embodiment of the liquid crystal display device of the present invention. A DSTN-type device that displays blue as the viewing angle increases as a liquid crystal panel is described.
図示するように、本実施例が第８図に示す従来装置と
異なる点は、第１の液晶パネル５上に積層された第２の
液晶パネル９上に設けた上部偏光板11の上に第３の液晶
パネル31Aを設けた点にある。従って、ここではこの第
３の液晶パネル31についてのみ詳細に説明する。As shown in the drawing, the present embodiment is different from the conventional device shown in FIG. 8 in that the present embodiment is different from the conventional device shown in FIG. The third liquid crystal panel 31A is provided. Therefore, here, only the third liquid crystal panel 31 will be described in detail.
この液晶パネル31Aは一対の透明ガラス基板32A,32Bが
対向配置され、その各透明ガラス基板32Aと32Bの対向面
には、液晶および二色性色素を該対向面に対して垂直に
配向させるための配向膜33が形成され、その両基板周辺
端部は封着材により封止されている。In the liquid crystal panel 31A, a pair of transparent glass substrates 32A and 32B are arranged to face each other, and the liquid crystal and the dichroic dye are aligned on the opposing surfaces of the respective transparent glass substrates 32A and 32B to be perpendicular to the opposing surfaces. Are formed, and the peripheral edges of both substrates are sealed with a sealing material.
また、この封止空間内には、前記した青色を消去する
黄色系の二色性色素34の分子が混入分散されたネマティ
ック液晶等の液晶35が封入されて形成されいる。In this sealed space, a liquid crystal 35 such as a nematic liquid crystal in which molecules of the above-described yellow dichroic dye 34 for eliminating blue are mixed and dispersed is formed.
この液晶表示装置では、視角変化に対して表示面の色
は青色になるため、二色性色素34としては青色を吸収す
る黄色系の色素を用い、前記配向膜33を、前記二色性色
素34がネマティック液晶等の液晶35と共に、第１および
第２のパネル5,9のガラス基板1A,1B,6A,6Bに垂直に配向
されるようにラビング加工を施している。In this liquid crystal display device, since the color of the display surface becomes blue with respect to the change in viewing angle, a yellow dye that absorbs blue is used as the dichroic dye 34, and the alignment film 33 is formed by the dichroic dye. A rubbing process is performed so that the liquid crystal 34 and the liquid crystal 35 such as a nematic liquid crystal are vertically aligned with the glass substrates 1A, 1B, 6A, and 6B of the first and second panels 5, 9.
このような本実施例の液晶表示装置の視角と色度との
関係図を第７図に示す。FIG. 7 shows a relationship diagram between the viewing angle and the chromaticity of the liquid crystal display device of the present embodiment.
図示するように視角が０度の場合の色度座標14（x1,y
1）に比べて視角が20度の色度座標（x2′,y2′）視角が
40度の色度座標（x3′,y3′）のいずれの場合にも表示
面は青色へ向かって移行するが、第10図に示した従来値
よりもその度合いは小さくなっており、このことは視角
変化による表示面の青色への変化が抑えられ、視角によ
る色変動の少ない液晶表示装置が得られたことを意味す
る。As shown in the figure, the chromaticity coordinates 14 (x 1 , y
Chromaticity coordinates (x 2 ′, y 2 ′) with a viewing angle of 20 degrees compared to 1 )
In each case of the chromaticity coordinates (x 3 ′, y 3 ′) of 40 degrees, the display surface shifts toward blue, but the degree is smaller than the conventional value shown in FIG. This means that a change in the blue color of the display surface due to a change in the viewing angle is suppressed, and a liquid crystal display device with less color variation due to the viewing angle is obtained.
次に本発明の第２実施例を第４図に示す。本実施例が
第１実施例と異なる点は、第３の液晶パネル31Bにおい
て各透明ガラス基板32Aと32Bの対向面に、直接的にそれ
ぞれべた状の透明電極37A,37Bを設けた点と、該透明電
極37Aと37Bの上面に設けた配向膜33にはラビング加工を
施していない点である。即ちこのパネルでは電極37A,37
B間に電圧を印加することで液晶35の分子を前記したガ
ラス基板1A,1B,6A,6Bに垂直に成るように配向させ、こ
れに伴って二色性色素34も同様な方向に配向させるよう
にしたものである。Next, a second embodiment of the present invention is shown in FIG. This embodiment is different from the first embodiment in that solid transparent electrodes 37A and 37B are directly provided on the opposing surfaces of the transparent glass substrates 32A and 32B in the third liquid crystal panel 31B. The rubbing process is not performed on the alignment film 33 provided on the upper surfaces of the transparent electrodes 37A and 37B. That is, in this panel, electrodes 37A and 37A
By applying a voltage between B, the molecules of the liquid crystal 35 are aligned so as to be perpendicular to the glass substrates 1A, 1B, 6A, 6B, and the dichroic dye 34 is also aligned in the same direction. It is like that.
このようにすれば、液晶35に混入した二色性色素34に
よって第１および第２の液晶パネル5,9を透過した光
が、視角の変動によって前記色素34によって吸収されて
表示面が白色より青色に変動するのが防止できる。In this way, the light transmitted through the first and second liquid crystal panels 5, 9 by the dichroic dye 34 mixed in the liquid crystal 35 is absorbed by the dye 34 due to a change in viewing angle, and the display surface becomes more white. It can be prevented from changing to blue.
更に本発明の第３実施例を第５図に示す。 FIG. 5 shows a third embodiment of the present invention.
本実施例では上記した第４図に示す第２実施例の第３
の液晶パネル31Bの代わりに、二色性色素34を添加した
液晶35を内部に有し、かつポリビニルアルコールで形成
された多数のマイクロカプセル41を内蔵した透明なポリ
イミドよりなるフィルム上に蒸着法等によりITOからな
る透明電極43A,43Bが形成された透明な高分子フィルム
である、透明フィルム42を用いる。In this embodiment, the third embodiment of the second embodiment shown in FIG.
Instead of the liquid crystal panel 31B, a liquid crystal 35 to which a dichroic dye 34 is added is provided inside, and a large number of microcapsules 41 formed of polyvinyl alcohol are embedded on a film made of transparent polyimide on which a film is formed. The transparent film 42, which is a transparent polymer film on which transparent electrodes 43A and 43B made of ITO are formed, is used.
この透明フィルム42の上下に配置した透明電極43A,43
B間に電圧を印加するとマイクロカプセル41内の二色性
色素34は前記同様に、透明ガラス基板1A,1B,6A,6B面に
垂直に配向される。従って視角の変動によって見掛け
上、第１および第２の液晶パネルの基板面1A,1B,6A,6B
に斜め方向より入射された光が、前記色素34に吸収され
て白色の表示が青色に変動するのが防止できる。Transparent electrodes 43A, 43 arranged above and below this transparent film 42
When a voltage is applied between B, the dichroic dye 34 in the microcapsule 41 is oriented perpendicular to the transparent glass substrates 1A, 1B, 6A, and 6B in the same manner as described above. Therefore, apparently, the substrate surfaces 1A, 1B, 6A, 6B of the first and second liquid crystal panels are changed due to the change of the viewing angle.
It is possible to prevent the white light from changing to blue due to absorption of the light incident from the oblique direction into the dye 34.
更に本発明の第４実施例を第６図に示す。 FIG. 6 shows a fourth embodiment of the present invention.
第６図に示すように、本実施例では第６図（ａ）に示
すように二色性色素34を混合したアクリル樹脂、或いは
ジアセテート樹脂等のポリマー51の結晶を、第６図
（ｂ）に示すように矢印Ｚ方向に沿って垂直方向に延伸
し、更に第６図（ｃ）に示すように延伸した軸方向
（Ｚ）に対し垂直にポリマー51結晶を切り出し、これに
よって二色性色素34を前記した透明ガラス基板1A,1B,6
A,6B面に対して垂直方向に配向させたポリマーのシート
52を形成し、このシート52を前記した第３の液晶パネル
の代わりに用いる。As shown in FIG. 6, in this embodiment, as shown in FIG. 6 (a), a crystal of a polymer 51 such as an acrylic resin or a diacetate resin mixed with a dichroic dye 34 is formed as shown in FIG. 6 (b). ), The polymer 51 is stretched in the vertical direction along the direction of the arrow Z, and as shown in FIG. 6 (c), the polymer 51 crystal is cut out perpendicular to the axial direction (Z). The transparent glass substrate 1A, 1B, 6
Polymer sheet oriented perpendicular to A, 6B plane
A sheet 52 is formed, and this sheet 52 is used in place of the third liquid crystal panel described above.
このようにして従来の液晶表示装置の透明ガラス基板
面に対して垂直方向に配向した二色性色素を有するパネ
ル、或いはフィルムを用いることで視角によって表示面
が青色に移行するのを減少することができるので、観察
し易い表示面を有する液晶表示装置が得られる。In this way, by using a panel or film having a dichroic dye oriented perpendicular to the transparent glass substrate surface of a conventional liquid crystal display device, it is possible to reduce the transition of the display surface to blue depending on the viewing angle. Therefore, a liquid crystal display device having a display surface that is easy to observe can be obtained.
なお、第1,第2,第３および第４実施例では従来の液晶
パネルとして視角が大きくなると、青くなるDSTN型液晶
パネルを用いたため、二色性色素として青色を吸収する
黄色の色素を用いたが、液晶パネルの表示方式や、パネ
ル条件等により変化する色が変わるため、本実施例で用
いた二色性色素に限定されない。In the first, second, third and fourth embodiments, since a DSTN type liquid crystal panel which becomes blue when the viewing angle becomes large as a conventional liquid crystal panel was used, a yellow dye which absorbs blue as a dichroic dye was used. However, since the color that changes depending on the display method of the liquid crystal panel, panel conditions, and the like changes, the present invention is not limited to the dichroic dye used in this example.
以上の説明から明らかなように本発明によれば、２色
性色素を垂直に配向した層により視角による色変化の無
い表示品質の良好な液晶表示装置が得られる効果があ
る。As is apparent from the above description, according to the present invention, a layer in which dichroic dyes are vertically aligned has an effect of obtaining a liquid crystal display device having good display quality without color change due to a viewing angle.
第１図は本発明の液晶表示装置の原理図、 第２図（ａ）、および第２図（ｂ）は本発明の装置に於
ける二色性色素の状態図、 第３図は本発明の液晶表示装置の第１実施例の説明図、 第４図は本発明の第２実施例の説明図、 第５図は本発明の第３実施例の説明図、 第６図（ａ）、第６図（ｂ）および第６図（ｃ）は本発
明の第４実施例の説明図、 第７図は第１実施例に於ける視角と色度の関係図、 第８図は従来の液晶表示装置の説明図、 第９図は従来の液晶表示装置の不都合な状態図、 第10図は従来の装置に於ける視角と色度の関係図であ
る。 図において、 1A,1B,21A,21B,32A,32Bは透明ガラス基板、2A,2B,37A,3
7B,43A,43Bは透明電極、3,7A,7B,23,33は配向膜、4,8,2
4,35はネマティック液晶、５は第１の液晶パネル、９は
第２の液晶パネル、10,11,26は偏光板、27は二色性色素
層、27Aは色素分子、31A,31Bは第３の液晶パネル、34は
二色性色素、41はマイクロカプセル、42は透明フィル
ム、43A,43Bは透明電極、51はポリマー、52はポリマー
シートを示す。FIG. 1 is a principle view of the liquid crystal display device of the present invention, FIGS. 2 (a) and 2 (b) are state diagrams of dichroic dyes in the device of the present invention, and FIG. FIG. 4 is an explanatory view of a first embodiment of the liquid crystal display device, FIG. 4 is an explanatory view of a second embodiment of the present invention, FIG. 5 is an explanatory view of a third embodiment of the present invention, FIG. 6 (b) and 6 (c) are explanatory diagrams of a fourth embodiment of the present invention, FIG. 7 is a diagram showing the relationship between the viewing angle and chromaticity in the first embodiment, and FIG. FIG. 9 is an explanatory diagram of a liquid crystal display device, FIG. 9 is an inconvenient state diagram of the conventional liquid crystal display device, and FIG. 10 is a diagram showing the relationship between viewing angle and chromaticity in the conventional device. In the figure, 1A, 1B, 21A, 21B, 32A, 32B are transparent glass substrates, 2A, 2B, 37A, 3
7B, 43A, 43B are transparent electrodes, 3, 7A, 7B, 23, 33 are alignment films, 4, 8, 2
4, 35 is a nematic liquid crystal, 5 is a first liquid crystal panel, 9 is a second liquid crystal panel, 10, 11, 26 are polarizing plates, 27 is a dichroic dye layer, 27A is a dye molecule, 31A and 31B are Reference numeral 3 denotes a liquid crystal panel, 34 denotes a dichroic dye, 41 denotes a microcapsule, 42 denotes a transparent film, 43A and 43B denote transparent electrodes, 51 denotes a polymer, and 52 denotes a polymer sheet.
Claims (5)
れ透明電極と配向膜を積層し、該基板間の空間部に液晶
を封入した少なくとも一つの液晶パネルと、該液晶パネ
ル上に偏光板を介して前記透明絶縁性基板の表面に対し
て二色性色素を垂直に配向させて成る二色性色素層とを
重ねて配置したことを特徴とする液晶表示装置。At least one liquid crystal panel in which a transparent electrode and an alignment film are laminated on a pair of opposing transparent insulating substrates, and a liquid crystal is sealed in a space between the substrates, and a polarizing plate is provided on the liquid crystal panel. And a dichroic dye layer formed by vertically aligning the dichroic dye with respect to the surface of the transparent insulating substrate via the transparent insulating substrate.
板間に二色性色素を含む液晶を有し、かつ各基板の対向
面に、該二色性色素を液晶と共に該基板面に対して垂直
に配向させる配向膜を設けた液晶パネルから成ることを
特徴とする請求項１記載の液晶表示装置。2. The dichroic dye layer has a liquid crystal containing a dichroic dye between a pair of transparent insulating substrates, and the dichroic dye is provided together with the liquid crystal on the opposing surface of each substrate. 2. The liquid crystal display device according to claim 1, comprising a liquid crystal panel provided with an alignment film that is oriented perpendicular to the plane.
板間に二色性色素を含む液晶を有し、かつ各基板の対向
面に、電圧を印加することで該二色性色素を液晶と共
に、基板面に対して垂直に配向させる一対の透明電極と
配向膜を設けた液晶パネルから成ることを特徴とする請
求項１記載の液晶表示装置。3. The dichroic dye layer has a liquid crystal containing a dichroic dye between a pair of transparent insulating substrates, and the dichroic dye layer is formed by applying a voltage to opposing surfaces of the substrates. 2. The liquid crystal display device according to claim 1, comprising a liquid crystal panel provided with a pair of transparent electrodes for aligning the dye together with the liquid crystal in a direction perpendicular to the substrate surface and an alignment film.
晶のマイクロカプセルを多数内蔵した透明な絶縁フィル
ムで、かつ該絶縁フィルムの表裏両面に、電圧を印加す
ることでマイクロカプセル内の二色性色素を液晶と共
に、前記透明絶縁性基板の表面に対して垂直に配向させ
る一対の透明電極を設けた高分子フィルムから成ること
を特徴とする請求項１記載の液晶表示装置。4. The dichroic dye layer is a transparent insulating film containing a large number of liquid crystal microcapsules containing a dichroic dye, and a microcapsule is formed by applying a voltage to both front and back surfaces of the insulating film. 2. The liquid crystal display device according to claim 1, comprising a polymer film provided with a pair of transparent electrodes for orienting the dichroic dye therein together with the liquid crystal in a direction perpendicular to the surface of the transparent insulating substrate.
樹脂材に混合分散され、かつ前記透明絶縁性基板の表面
に対して垂直に配向させた状態でシート状に形成した高
分子シートから成ることを特徴とする請求項１記載の液
晶表示装置。5. The dichroic dye layer is formed into a sheet in a state in which dichroic dye molecules are mixed and dispersed in a resin material and oriented perpendicular to the surface of the transparent insulating substrate. 2. The liquid crystal display device according to claim 1, comprising a polymer sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63263390A JP2658282B2 (en) | 1988-10-18 | 1988-10-18 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63263390A JP2658282B2 (en) | 1988-10-18 | 1988-10-18 | Liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02109018A JPH02109018A (en) | 1990-04-20 |
| JP2658282B2 true JP2658282B2 (en) | 1997-09-30 |
Family
ID=17388828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63263390A Expired - Lifetime JP2658282B2 (en) | 1988-10-18 | 1988-10-18 | Liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2658282B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5013371B2 (en) * | 2006-05-19 | 2012-08-29 | Ｎｌｔテクノロジー株式会社 | Light source device, display device, terminal device, and transparent / scattering switching element |
| US8446548B2 (en) | 2006-05-19 | 2013-05-21 | Nlt Technologies, Ltd. | Light source device, display device, terminal device, and transparent/scattering state switching element |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50147890A (en) * | 1974-05-17 | 1975-11-27 | ||
| JPS56140320A (en) * | 1980-04-04 | 1981-11-02 | Hitachi Ltd | Two-layer type liquid crystal color display device |
-
1988
- 1988-10-18 JP JP63263390A patent/JP2658282B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50147890A (en) * | 1974-05-17 | 1975-11-27 | ||
| JPS56140320A (en) * | 1980-04-04 | 1981-11-02 | Hitachi Ltd | Two-layer type liquid crystal color display device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02109018A (en) | 1990-04-20 |
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