JPS5916250B2 - liquid crystal display device - Google Patents
liquid crystal display deviceInfo
- Publication number
- JPS5916250B2 JPS5916250B2 JP2479175A JP2479175A JPS5916250B2 JP S5916250 B2 JPS5916250 B2 JP S5916250B2 JP 2479175 A JP2479175 A JP 2479175A JP 2479175 A JP2479175 A JP 2479175A JP S5916250 B2 JPS5916250 B2 JP S5916250B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- voltage
- display panel
- transparent 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
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims description 77
- 239000000758 substrate Substances 0.000 claims description 15
- 239000004988 Nematic liquid crystal Substances 0.000 claims description 14
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 claims description 8
- 238000000149 argon plasma sintering Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- 238000002296 dynamic light scattering Methods 0.000 description 6
- 230000005685 electric field effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- IIZPXYDJLKNOIY-JXPKJXOSSA-N 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCC\C=C/C\C=C/C\C=C/C\C=C/CCCCC IIZPXYDJLKNOIY-JXPKJXOSSA-N 0.000 description 1
- 241000887125 Chaptalia nutans Species 0.000 description 1
- 241000269913 Pseudopleuronectes americanus Species 0.000 description 1
- WCLNGBQPTVENHV-MKQVXYPISA-N cholesteryl nonanoate Chemical compound C([C@@H]12)C[C@]3(C)[C@@H]([C@H](C)CCCC(C)C)CC[C@H]3[C@@H]1CC=C1[C@]2(C)CC[C@H](OC(=O)CCCCCCCC)C1 WCLNGBQPTVENHV-MKQVXYPISA-N 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 229940067606 lecithin Drugs 0.000 description 1
- 235000010445 lecithin Nutrition 0.000 description 1
- 239000000787 lecithin Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011306 natural pitch Substances 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
【発明の詳細な説明】 本発明は、液晶を利用した表示装置に関する。[Detailed description of the invention] The present invention relates to a display device using liquid crystal.
液晶、特にネマチツク液晶は、動的光散乱効果（ＤＳＭ
）、複屈折効果（ＤＡＰ）、旅先効果（ＴＮ）等の電気
光学効果を有しており表示装置に用いられている。ネマ
チツク液晶のこれらの効果は、液晶物質の種類や液晶分
子の配列構造を適当に選ぷことによつて得られる。これ
らΞ種の効果を一つの液晶表示パネルで得ることができ
る液晶表示装置は、昭和４８年１２月２０日付出願の特
願昭４８−１４３３０８号明細書に記載されている。こ
の明細書に記されているように、直流あるいは数百ヘル
ツ以下の低周波交流電圧を印加した場合には動的光散乱
効果が生じ、数百ヘルツ以上の高周波交流電圧を印加し
た場合には、低電界で複屈折効果、高電界で旅先効果が
生じる。見やすくするために、動的光散乱効果にもとず
く表示では、一般には液晶表示パネルの背面を黒つぽい
ものにする必要があり、複屈折効果あるいは徒党１０効
果にもとずく表示では、一般に液晶表示パネルの背面を
白つぽいものにする必要がある。本発明の目的は、動的
光散乱効果にもとずく表示の場合に、液晶表示パネルの
背面を黒つぽくして、複屈折効果、旅先効果にもとずく
表示の場合１５に液晶表示パネルの背面を白つぽくして
、見やすい液晶表示装置を提供することにある。Liquid crystals, especially nematic liquid crystals, have dynamic light scattering effects (DSM).
), birefringence effect (DAP), destination effect (TN), and other electro-optical effects, and is used in display devices. These effects of nematic liquid crystals can be obtained by appropriately selecting the type of liquid crystal material and the alignment structure of liquid crystal molecules. A liquid crystal display device capable of obtaining these types of effects with a single liquid crystal display panel is described in Japanese Patent Application No. 143308/1970 filed on December 20, 1972. As described in this specification, a dynamic light scattering effect occurs when a DC or low frequency AC voltage of several hundred hertz or less is applied, and a dynamic light scattering effect occurs when a high frequency AC voltage of several hundred hertz or more is applied. , birefringence effects occur at low electric fields, and destination effects occur at high electric fields. In order to make it easier to see, displays based on dynamic light scattering effects generally require a blackish back surface of the liquid crystal display panel, while displays based on birefringence or clique 10 effects generally require a black back surface. It is necessary to make the back of the liquid crystal display panel whitish. An object of the present invention is to make the back surface of the liquid crystal display panel black in the case of a display based on a dynamic light scattering effect, and to make the liquid crystal display panel The purpose of the present invention is to provide an easy-to-read liquid crystal display device with a white back surface.
本発明によれば、透明電極基板の内側表面に液晶分子配
向が電圧を印加しない時は垂直配向、電圧印加時は印加
電圧の種類に応じてねじれ配向構２０造もしくは光散乱
構造となるような表面処理が施されている一対の透明電
極基板間に、コレステリツク液晶が数パーセント以下添
加された誘電異方性が負のネマチツク液晶を充填した液
晶表示パネルと、透明電極板の内側表面に９００ねじれ
配向２５処理が施されている一対の透明電極基板間に誘
電異方性が正のネマチツク液晶を充填した液晶表示パネ
ルと、前記２種の液晶表示パネルをはさみこむように配
置した一対の直線偏光板と、前記２種の液晶表示パネル
に電圧を印加するための電源と３０から成る液晶表示装
置が得られる。According to the present invention, the liquid crystal molecules on the inner surface of the transparent electrode substrate are vertically aligned when no voltage is applied, and are twisted or light-scattering when voltage is applied, depending on the type of applied voltage. A liquid crystal display panel filled with nematic liquid crystal with negative dielectric anisotropy to which a few percent or less of cholesteric liquid crystal is added between a pair of surface-treated transparent electrode substrates, and a 900° twist on the inner surface of the transparent electrode plate. A liquid crystal display panel in which a nematic liquid crystal having a positive dielectric anisotropy is filled between a pair of transparent electrode substrates subjected to alignment 25 treatment, and a pair of linear polarizing plates arranged to sandwich the two types of liquid crystal display panels. A liquid crystal display device is obtained, which includes a power source 30 for applying voltage to the two types of liquid crystal display panels.
次に、本発明について、図面を参照して詳説する。Next, the present invention will be explained in detail with reference to the drawings.
第１図は、本発明の一実施例の液晶表示パネルの断面を
示す模式図である。図において、３は数パーセント以下
のコレステツク液晶が添加された負の誘電異方性を有す
るネマチツク液晶である。FIG. 1 is a schematic diagram showing a cross section of a liquid crystal display panel according to an embodiment of the present invention. In the figure, numeral 3 is a nematic liquid crystal having negative dielectric anisotropy to which a few percent or less of cholestic liquid crystal is added.
この液晶３は、透明電極膜２ａ、２ｂがコーティングさ
れた一対の透明電極基板１ａ，１ｂによつてはさまれ、
スペーサ５ａによつて厚みが一定に保たれている。さら
に図示はしてないが透明電極基板１ａ，１ｂの内側表面
には次のような処理が施されている。透明電極２ａ，２
ｂを含む透明電極基板１ａ，１ｂの内側表面には、まず
ラピング等による平行配向処理を施した後、さらにレシ
チンのような表面活性剤を薄く塗布すること等による垂
直配向処理を施してある。上記の表面処理が施された一
対の透明電極基板１ａ，１ｂは、平行配向処理による溝
方向が互いに直交する様に組み立てられている。This liquid crystal 3 is sandwiched between a pair of transparent electrode substrates 1a and 1b coated with transparent electrode films 2a and 2b,
The thickness is kept constant by the spacer 5a. Further, although not shown, the inner surfaces of the transparent electrode substrates 1a and 1b are subjected to the following treatment. Transparent electrodes 2a, 2
The inner surfaces of the transparent electrode substrates 1a and 1b including the transparent electrode substrates 1a and 1b are first subjected to a parallel alignment process by wrapping or the like, and then a vertical alignment process is carried out by applying a thin layer of a surfactant such as lecithin. A pair of transparent electrode substrates 1a and 1b subjected to the above surface treatment are assembled so that the groove directions formed by the parallel alignment treatment are orthogonal to each other.
４は、正の誘電異方性を有するネマチツク液晶である。4 is a nematic liquid crystal having positive dielectric anisotropy.
この液晶４は、透明電極膜２ｃ，２ｄがコーテイングさ
れた一対の透明電極基板１ｂ１ｃによつてはさまれ、ス
ペーサ５ｂによつて厚みが一定に保たれている。透明電
極基板１ｂは、液晶３，４に対し共通に用いられている
。さらに図示はしてないが、透明電極２ｅ，２ｄを含む
透明電極基板１ｂ，１ｃの内側表面は、ラピング等によ
る平行配向処理が施されている。この表面処理が施され
た一対の透明電極基板１ｂ，１ｃは、平行配向処理によ
る溝方向が互いに直交する様に組み立てられている。次
に、本発明による上述したような構成の液晶表示パネル
における電圧印加による液晶分子の動作について、第２
図を用いて説明する。The liquid crystal 4 is sandwiched between a pair of transparent electrode substrates 1b1c coated with transparent electrode films 2c and 2d, and its thickness is kept constant by a spacer 5b. The transparent electrode substrate 1b is commonly used for the liquid crystals 3 and 4. Further, although not shown, the inner surfaces of the transparent electrode substrates 1b and 1c including the transparent electrodes 2e and 2d are subjected to a parallel alignment process by wrapping or the like. A pair of transparent electrode substrates 1b and 1c subjected to this surface treatment are assembled so that the groove directions formed by the parallel alignment treatment are orthogonal to each other. Next, we will discuss the operation of liquid crystal molecules due to voltage application in the liquid crystal display panel having the above-described structure according to the present invention.
This will be explained using figures.
第２図は、液晶表示パネル内の液晶分子６，７の配向構
造を模型的に示している。液晶分子６は、コレステリツ
ク液晶が数パーセント以下添加された負の誘電異方性を
有するネマチツク液晶、液晶分子７は正の誘電異方性を
有するネマチツク液晶である。説明の都合土、液晶分子
６によつて構成される液晶表示、パネルをＰｌ．液晶分
子７によつて構成される液晶表示パネルをＰ２とする。
第２図ａは、Ｐｌ，Ｐ２に電圧が印加されない場合の分
子配向を示し、液晶分子６は垂直配向、液晶分子７は９
０しねじれ配向をしている。一対の直線偏光板を液晶表
示パネルの前後に、偏光方向が直交するように配置した
場合、Ｐ２で、直線偏波光は９００旋光するため入射光
は透過してくる。第２図図ｂは、Ｐ１の一部分に数百ヘ
ルツ以上の比較的高い周波数の交流電圧を印加した場合
の液晶分子配向を示したものである。上述の電圧が印加
されると、電界効果により液晶分子６は９０加ねじれ配
向となり、Ｐ２によつて９０６旋光された直線偏波光は
、Ｐ１でさらに９００旋光されるため、液晶表示パネル
を透過してきた直線偏波光は結局１８００旋光される。FIG. 2 schematically shows the alignment structure of liquid crystal molecules 6 and 7 in a liquid crystal display panel. The liquid crystal molecule 6 is a nematic liquid crystal having negative dielectric anisotropy to which several percent or less of cholesteric liquid crystal is added, and the liquid crystal molecule 7 is a nematic liquid crystal having positive dielectric anisotropy. For convenience of explanation, a liquid crystal display and a panel composed of liquid crystal molecules 6 are referred to as Pl. A liquid crystal display panel composed of liquid crystal molecules 7 is designated as P2.
Figure 2a shows the molecular orientation when no voltage is applied to Pl and P2, liquid crystal molecules 6 are vertically aligned, liquid crystal molecules 7 are 9
0 and has a twisted orientation. When a pair of linearly polarizing plates are arranged before and after a liquid crystal display panel so that the polarization directions are perpendicular to each other, the linearly polarized light is rotated by 900 at P2, so that the incident light is transmitted. FIG. 2b shows the orientation of liquid crystal molecules when an alternating current voltage with a relatively high frequency of several hundred hertz or more is applied to a portion of P1. When the above voltage is applied, the liquid crystal molecules 6 are twisted by 90 degrees due to the electric field effect, and the linearly polarized light that has been rotated by 906 degrees by P2 is further rotated by 900 degrees by P1, so that it is transmitted through the liquid crystal display panel. The linearly polarized light is ultimately rotated by 1800 degrees.
したがつて、一対の９００交叉させた直線偏光板を通し
て液晶表示パネルを見た場合、電圧が印加された部分は
暗く、電圧が印加されない部分は明るく見える。電界効
果により液晶分子６は、９０るねじれ配向となるが、液
晶分子６には、コレステリツク液晶が数パーセント添加
されているため、ねじれ方向を、用いるコレステリツク
液晶の左旋性又は右旋性によつて左旋又は右旋に制御出
来る。従つて均一性の良い９０旋ねじれ配向が得られる
。電圧無印加で垂直配向をさまたげず且つ、電圧印加で
２７００ねじれ配向とならない条件から求められるコレ
ステリツク液晶の添加量は用いるコレステリツク液晶の
個有の自然ピツチによつて異なるが、一般的に数％以下
である。第２図Ｃは、Ｐ１の一部分に数百ヘルツ以下の
比較的低い周波数の交流電圧、あるいは直流電圧を印加
し、Ｐ２の全体に、交流電圧を印加した場合の液晶分子
配向を示したものである。液晶分子６は、動的光散乱効
果にもとずく乱流状態となり、液晶分子７は、電界効果
によつて垂直配向構造となる。したがつて、一対の直線
偏光板を通して液晶表示パネルを見た場合、Ｐ１の電圧
が印加された部分は光散乱状態のため白つぽく見え、そ
の他の部分は、光を通さないため黒つぽく見える。次に
、本発明による液晶表示装置の一実施例について、図面
を参照して説明する。Therefore, when viewing the liquid crystal display panel through a pair of 900 crossed linear polarizers, the areas to which voltage is applied appear dark, and the areas to which no voltage is applied appear bright. Due to the electric field effect, the liquid crystal molecules 6 have a 90 degree twist orientation, but since several percent of cholesteric liquid crystal is added to the liquid crystal molecules 6, the twist direction depends on the levorotary or dextrorotatory nature of the cholesteric liquid crystal used. Can be controlled to rotate left or right. Therefore, a 90-twist orientation with good uniformity can be obtained. The amount of cholesteric liquid crystal to be added, which is determined under the conditions that vertical alignment is not disturbed when no voltage is applied and 2700 twisted alignment is not achieved when voltage is applied, varies depending on the unique natural pitch of the cholesteric liquid crystal used, but is generally less than a few percent. It is. Figure 2C shows the orientation of liquid crystal molecules when an AC voltage or DC voltage with a relatively low frequency of several hundred hertz or less is applied to a portion of P1, and an AC voltage is applied to the entire P2. be. The liquid crystal molecules 6 are in a turbulent state based on the dynamic light scattering effect, and the liquid crystal molecules 7 are in a vertically aligned structure due to the electric field effect. Therefore, when looking at the liquid crystal display panel through a pair of linear polarizers, the part to which the voltage P1 is applied appears white because of the light scattering state, and the other parts appear black because no light passes through. appear. Next, an embodiment of a liquid crystal display device according to the present invention will be described with reference to the drawings.
第３図は、本発明による液晶表示装置の一実施例の構成
を示す概略図である。液晶表示パネル８は、前述の第１
図に示したように、Ｐｌ，Ｐ２から構成されている。Ｐ
１に用いた液晶９は、コレステリツク液晶コレステリル
ーノナノエイトを０，２重量パーセント含む負の誘電異
方性を有するネマチツク液晶パラ−メトキシベンジリデ
ン−パラ−ブチルアニリンである。Ｐ２に用いた液晶１
０は、正の誘電異方性を有するネマチツク液晶混合物で
あり、パラーブトキシベンジリデンーパラーアミノベン
ゾニトリル、パラ−ヘキシルオキシベンジリデン・パラ
−アミノベンゾニトリル、パラーオクタノイルオキシベ
ンジリデンーパラーアミノベンゾニトリル、パラーメト
キシベンジリデンーパラーゴチルアニリンをモル比で７
リJャ開メF１０の割合いで混合したものである。透明電
極薄膜は、酸化スズ、酸化インジウムが好ましい。この
液晶表示パネル８の前後には、互いに偏光方向が直交す
る一対の直線偏光板１１が設けられ、その片側には、光
散乱板１２および白色光源１３が設置されている。観視
者１４は、他方の側から液晶表示パネル８を見る。この
ような構造の液晶表示装置において、液晶表示パネル８
のＰｌ，Ｐ２に電圧力圧Ｄ加されていない時は、観視者
１４には液晶表示パネル８は直交偏光板１１を通して光
散乱板の色、即ち白く見える。次に、液晶表示パネル８
のＰ１に、電源１５より、充分な高周波交流電圧が印加
されると、観視者１４には、液晶表示パネル８は、この
高周波交流電圧が印加された部分は黒く見える。次に液
晶表示パネル８のＰ１に電源１５より、充分な低周波交
流電圧あるいは直流電圧が印加され、かつ、液晶表示パ
ネル８のＰ２の全面に電源１５より交流電圧が印加され
ると、観視者１４には、液晶表示パネル８は、Ｐ１に低
周波交流電圧あるいは直流電圧が印加された部分は白く
見え、その他の部分は黒く見える。このように、本実施
例の液晶表示装置は、液晶表示パネルに印加する電圧の
種類を変えることにより、表示部が白で非表示部が黒、
あるいはその逆の表示を実現することができる。以上本
発明について実施例を用いて説明したが、液晶表示パネ
ルのＰｌ，Ｐ２を独立させても、本発明の利点を有する
。FIG. 3 is a schematic diagram showing the structure of an embodiment of a liquid crystal display device according to the present invention. The liquid crystal display panel 8 includes the first
As shown in the figure, it is composed of Pl and P2. P
The liquid crystal 9 used in Example 1 is a nematic liquid crystal para-methoxybenzylidene-para-butylaniline having negative dielectric anisotropy and containing 0.2 percent by weight of cholesteric liquid crystal cholesteryl nonanoate. Liquid crystal 1 used for P2
0 is a nematic liquid crystal mixture with positive dielectric anisotropy, including para-butoxybenzylidene-para-aminobenzonitrile, para-hexyloxybenzylidene-para-aminobenzonitrile, para-octanoyloxybenzylidene-para-aminobenzonitrile, and para-aminobenzonitrile. Methoxybenzylidene-paragotylaniline molar ratio 7
It was mixed at a ratio of 10 parts. The transparent electrode thin film is preferably made of tin oxide or indium oxide. A pair of linear polarizing plates 11 whose polarization directions are perpendicular to each other are provided before and after the liquid crystal display panel 8, and a light scattering plate 12 and a white light source 13 are provided on one side of the linear polarizing plates 11. Viewer 14 views liquid crystal display panel 8 from the other side. In a liquid crystal display device having such a structure, the liquid crystal display panel 8
When no voltage D is applied to Pl and P2, the liquid crystal display panel 8 appears to the viewer 14 through the orthogonal polarizing plate 11 in the color of the light scattering plate, that is, white. Next, the liquid crystal display panel 8
When a sufficient high frequency AC voltage is applied from the power supply 15 to P1, the portion of the liquid crystal display panel 8 to which this high frequency AC voltage is applied appears black to the viewer 14. Next, when a sufficient low frequency AC voltage or DC voltage is applied from the power supply 15 to P1 of the liquid crystal display panel 8, and an AC voltage is applied from the power supply 15 to the entire surface of P2 of the liquid crystal display panel 8, the viewing To the viewer 14, the portion of the liquid crystal display panel 8 to which the low frequency AC voltage or DC voltage is applied to P1 appears white, and the other portions appear black. In this way, the liquid crystal display device of this example can display white in the display area and black in the non-display area by changing the type of voltage applied to the liquid crystal display panel.
Alternatively, the opposite display can be realized. Although the present invention has been described above using embodiments, the advantages of the present invention can be obtained even if Pl and P2 of the liquid crystal display panel are made independent.
又、Ｐ１に電源１５により適当な大きさの高周波交流電
圧を印加することにより赤から紫に至る多色表示を行な
うこともできる。また、本発明による液晶表示装置は、
Ｐ２の電極を複数個独立させて設けることにより、同一
パネル面内で表示部と非表示部を白・黒逆転させること
が可能であることは言うまでもない。Further, by applying a high frequency AC voltage of an appropriate magnitude to P1 from the power supply 15, a multicolor display ranging from red to purple can be performed. Further, the liquid crystal display device according to the present invention includes:
It goes without saying that by providing a plurality of P2 electrodes independently, it is possible to reverse the display and non-display areas from white to black within the same panel surface.
以上述べたように、本発明によれば多種類の表示ができ
、かつ見やすい液晶表示装置が得られる。As described above, according to the present invention, it is possible to obtain a liquid crystal display device that is capable of displaying a wide variety of types and is easy to view.
第１図は、本発明に用いる液晶表示パネルの構造を示す
概略図、第２図は、本発明による液晶表示装置の動作を
説明するための液晶分子配向を示す模型図、第３図は本
発明の一実施例の構成を示す概略図である。
第３図において、８は液晶表示パネル、９は負の誘電異
方性を有するネマチツク液晶、１０は正の誘電異方性を
有するネマチツク液晶、１１は直線偏光板、１２は光散
乱板、１３は光源、１４は観視者、１５は電源である。FIG. 1 is a schematic diagram showing the structure of a liquid crystal display panel used in the present invention, FIG. 2 is a schematic diagram showing the alignment of liquid crystal molecules for explaining the operation of the liquid crystal display device according to the present invention, and FIG. 3 is a schematic diagram showing the structure of a liquid crystal display panel used in the present invention. FIG. 1 is a schematic diagram showing the configuration of an embodiment of the invention. In FIG. 3, 8 is a liquid crystal display panel, 9 is a nematic liquid crystal with negative dielectric anisotropy, 10 is a nematic liquid crystal with positive dielectric anisotropy, 11 is a linear polarizing plate, 12 is a light scattering plate, 13 14 is a light source, 14 is a viewer, and 15 is a power source.
Claims (1)
に液晶分子配向が電圧を印加しない時は垂直配向、電圧
印加時は印加電圧の種類に応じてねじれ配向構造もしく
は光散乱構造となるような表面処理が施されている一対
の透明電極基板間にコレステリック液晶が数パーセント
以下添加された誘電異方性が負のネマチツク液晶を充填
した液晶表示パネルと、透明電極板の内側表面に９０°
ねじれ配向処理が施されている一対の透明電極基板間に
誘電異方性が正のネマチツク液晶を充填した液晶表示パ
ネルとを縦続して配置し、これら２種の液晶表示パネル
に駆動電圧を印加するための電源を設けて成る液晶表示
装置。1 Between a pair of linear polarizing plates, liquid crystal molecules are aligned on the inner surface of the transparent electrode substrate so that when no voltage is applied, the liquid crystal molecules are vertically aligned, and when voltage is applied, the structure becomes a twisted alignment structure or a light scattering structure depending on the type of applied voltage. A liquid crystal display panel filled with a nematic liquid crystal with negative dielectric anisotropy in which less than a few percent of cholesteric liquid crystal is added between a pair of transparent electrode substrates that have been surface-treated, and a 90° angle on the inner surface of the transparent electrode plates.
A liquid crystal display panel filled with nematic liquid crystal with positive dielectric anisotropy is arranged in series between a pair of transparent electrode substrates that have been subjected to twisted alignment treatment, and a driving voltage is applied to these two types of liquid crystal display panels. A liquid crystal display device equipped with a power source for
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2479175A JPS5916250B2 (en) | 1975-02-27 | 1975-02-27 | liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2479175A JPS5916250B2 (en) | 1975-02-27 | 1975-02-27 | liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5199497A JPS5199497A (en) | 1976-09-02 |
| JPS5916250B2 true JPS5916250B2 (en) | 1984-04-14 |
Family
ID=12147996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2479175A Expired JPS5916250B2 (en) | 1975-02-27 | 1975-02-27 | liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5916250B2 (en) |
-
1975
- 1975-02-27 JP JP2479175A patent/JPS5916250B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5199497A (en) | 1976-09-02 |
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