JPS62218930A - Liquid crystal display element - Google Patents
Liquid crystal display elementInfo
- Publication number
- JPS62218930A JPS62218930A JP61060753A JP6075386A JPS62218930A JP S62218930 A JPS62218930 A JP S62218930A JP 61060753 A JP61060753 A JP 61060753A JP 6075386 A JP6075386 A JP 6075386A JP S62218930 A JPS62218930 A JP S62218930A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- polarization
- polarizing
- polarizing plate
- directions
- 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.)
- Granted
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims description 40
- 230000010287 polarization Effects 0.000 claims abstract description 45
- 230000003287 optical effect Effects 0.000 claims description 4
- 239000004988 Nematic liquid crystal Substances 0.000 claims description 3
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 claims description 2
- 239000000565 sealant Substances 0.000 claims description 2
- 239000003086 colorant Substances 0.000 abstract description 11
- 230000000007 visual effect Effects 0.000 abstract 3
- 230000007935 neutral effect Effects 0.000 description 7
- 235000019646 color tone Nutrition 0.000 description 3
- 238000004040 coloring Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 235000005811 Viola adunca Nutrition 0.000 description 2
- 240000009038 Viola odorata Species 0.000 description 2
- 235000013487 Viola odorata Nutrition 0.000 description 2
- 235000002254 Viola papilionacea Nutrition 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 229910001887 tin oxide Inorganic materials 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 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
- 238000010030 laminating Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】 り産業上の利用分野］ 本発明は、液晶表示素子に関するものである。[Detailed description of the invention] [Industrial Application Fields] The present invention relates to a liquid crystal display element.
Ｌ従来の技術」
従来、ＴＮ型液晶表示素子の電極をＸ−Ｙマトリクス状
に配してダイナミック駆動し、高密度の表示容量を実現
する手法が安価な方法として、用いられてきた。しかし
、走査可能なライン数は、この素子の電圧−透過率変化
の急峻ざによって、支配され、こうした特性改良もほぼ
限界に近づいた。一方、液晶分子の捩れ角を１８０〜３
６０°と大きくし、かつ電極界面での液晶分子の？レテ
ィルト角を数置以上と大きくすると、電圧に対する液晶
分子の配列変化が急峻になる。二枚の偏光板でこの素子
を挟んで、光の干渉変化をコントラストとして利用する
と、電圧に対する透過率変化が急峻になり、走査ライン
数を増やしても、視野角が広く、コントラストも高い表
示が可能である事が知られている（例えば、Ｔ、Ｊ、５
ｃｈｅｆｆｅ ａｎｄ Ｊ、Ｎｅｈｒｉｎｇ。L. Prior Art Conventionally, an inexpensive method has been used in which the electrodes of a TN liquid crystal display element are arranged in an X-Y matrix and dynamically driven to realize a high-density display capacity. However, the number of lines that can be scanned is controlled by the steepness of the voltage-transmittance change of this element, and this improvement in characteristics has almost reached its limit. On the other hand, the twist angle of liquid crystal molecules is 180~3
60° and the liquid crystal molecules at the electrode interface? When the retilt angle is increased to several orders of magnitude or more, the arrangement of liquid crystal molecules changes sharply with respect to voltage. If this element is sandwiched between two polarizing plates and the change in light interference is used as contrast, the change in transmittance with respect to voltage will be steep, and even if the number of scanning lines is increased, a display with a wide viewing angle and high contrast will be possible. It is known that it is possible (for example, T, J, 5
cheffe and J, Nehring.
Ａｐｐ、 Ｐｈｙｓ、 Ｌｅｔｔ、、４５（１０）、
１０２１（’８４）又は、Ｔ、Ｊ、５ｃｈｅｆｆｅｒｅ
ｔ、ａｌ、’８５ ＳＩＤ Ｄｉｇｅｓｔ ｐａｐｅｒ
。App, Phys, Lett,, 45(10),
1021 ('84) or T, J, 5cheffere
t,al,'85 SID Digest paper
.
１２０ （’８５））
この表示モードでは、中性の吸収を持つ偏光板を二枚使
用し、その相互の偏光板の相対位置を変える事で、黄〜
緑と青〜青紫の変化、又は、茨紫と紫〜青紫の表示の主
に二つの表示色に限られた表示が可能であり、他の色調
では良好な表示は不可能であった。120 ('85)) This display mode uses two polarizing plates with neutral absorption, and by changing the relative positions of the polarizing plates, yellow to
It is possible to display mainly two display colors, green and blue to blue-violet, or thorny purple and purple to blue-violet, and good display is not possible with other color tones.
［発明の解決しようとする問題点」
従来の表示素子では中性の吸収（可視光部にほぼ均質な
偏光特性〕を持つ偏光板を二枚使用していたため、特定
の色調での表示のみ有効で、あまり表示色のバラエティ
−が少なく、多様な用途へ応用するには限度があった。[Problem to be solved by the invention] Conventional display elements use two polarizing plates with neutral absorption (approximately uniform polarization characteristics in the visible light region), so they are only effective for displaying a specific color tone. However, there was not much variety in display colors, and there was a limit to its application to a variety of uses.
Ｌ問題を解決するための手段］
本発明は、前述の問題点を解決すべくなされたものであ
り、はぼ平行に配置された一対の透明電極の内表面で、
液晶分子軸が電極面に対しやや傾いてほぼ平行に配列す
る様に処理され、周辺をシール材にて封止されたセル内
に、誘電異方性が正のネマチックあるいはコレステリッ
ク液晶が封入され、セルの外側に偏光板が設置され、か
つ相対向する電極間に電圧を印加する手段を備え、印加
する電圧の大きさに応じて、セル内を通過する光の干渉
状態を変えて光学変化を起す液晶表示素子において、少
なくとも一方の偏光板として、２つの偏光方向を有し、
それら２つの偏光方向においては夫々異なる可視光の波
長領域に偏光度を有する偏光板を用いたことを特徴とす
る液晶表示素子である。Means for Solving the L Problem] The present invention has been made to solve the above-mentioned problems.
A nematic or cholesteric liquid crystal with positive dielectric anisotropy is sealed in a cell whose periphery is sealed with a sealant and processed so that the liquid crystal molecular axes are aligned slightly tilted and almost parallel to the electrode surface. A polarizing plate is installed on the outside of the cell, and a means for applying a voltage between opposing electrodes is provided. Depending on the magnitude of the applied voltage, the interference state of light passing through the cell is changed to produce optical changes. In the liquid crystal display element having two polarization directions as at least one polarizing plate,
This liquid crystal display element is characterized by using polarizing plates having degrees of polarization in different visible light wavelength regions in the two polarization directions.
本発明でいう２つの偏光方向を有し、それら２つの偏光
方向においては夫々異なる可視光の波長領域に偏光度を
有する偏光板とは、中型の偏光板と重ねて回転させた場
合、異なる回転角に異なる色の光が透過してくるように
されたものであればよい。具体的には、通常のカラー偏
光板で色の異なる偏光板を偏光方向をずらして積層した
ものまたはあらかじめ両者を一体化したもののいずれで
もよい、また、各々の偏光方向はほぼ直交した方がオン
とオフ状態での色相の分離が艮〈望ましい０表示素子の
もう一方に設置する偏光板としては、中性の偏光板もし
くは、前記の積層偏光板、更にはカラー偏光板のいずれ
であっても良いが、干渉色を強く出し、コントラストを
上げっためには、高偏光度が得られる中性偏光板を使用
すえる事が望ましい。In the present invention, a polarizing plate that has two polarization directions and has polarization degrees in different visible light wavelength regions in the two polarization directions is a polarizing plate that has different polarization directions when rotated overlapping with a medium-sized polarizing plate. Any material that allows light of different colors to pass through the corners may be used. Specifically, a normal color polarizing plate may be used, either one in which polarizing plates of different colors are stacked with different polarization directions, or one in which the two are integrated in advance.Also, it is better to make the polarization directions of each plate almost perpendicular to each other. The polarizing plate installed on the other side of the desirable 0 display element may be a neutral polarizing plate, the laminated polarizing plate described above, or even a color polarizing plate. However, in order to bring out strong interference colors and increase contrast, it is desirable to use a neutral polarizing plate that can obtain a high degree of polarization.
第１図は本発明の基本的構成を示す断面模式第１図にお
いて、１．２は偏光板、３Ａ、 ３Ｂはガラス、プラス
チック等の透明基板、４Ａ、 ４Ｂは酸化インジウム−
酸化スズ、酸化スズ等の透明電極、５Ａ、 ５Ｂはポリ
イミド、ポリアミド、Ｓ ｉ０２、Ａｌ２Ｏ３等の配向
膜、８Ａ、 ８Ｂは電源、７Ａ。FIG. 1 is a cross-sectional diagram showing the basic structure of the present invention. In FIG. 1, 1.2 is a polarizing plate, 3A, 3B are transparent substrates such as glass or plastic, and 4A, 4B are indium oxide.
Transparent electrodes made of tin oxide, tin oxide, etc.; 5A, 5B are alignment films made of polyimide, polyamide, Si02, Al2O3, etc.; 8A, 8B are power supplies; 7A.
７Ｂはスイッチ、８はシール材を示している。7B indicates a switch, and 8 indicates a sealing material.
この図の左側ではスイッチ７Ａがオフとされており、そ
の液晶分子はねじれた状態９とされている。又、右側で
はスイッチ７Ｂがオンとされており、その液晶分子は立
ち上った状態１０とされている。On the left side of this figure, the switch 7A is turned off, and the liquid crystal molecules are in a twisted state 9. Further, on the right side, the switch 7B is turned on, and the liquid crystal molecules are in a state 10 in which they have risen.
本発明の液晶表示素子では、電圧印加によりセル内を通
過する光の干渉状態を変えて光学変化を起すことにより
表示を行うために、液晶は電圧無印加時に１８０〜３８
０”程度ねじられる。In the liquid crystal display element of the present invention, in order to perform display by changing the interference state of light passing through the cell by applying a voltage and causing an optical change, the liquid crystal has a temperature of 180 to 38
Twisted about 0".
このためには内基板の配向方向を１８０〜３６０゜にす
るとともに、液晶のｄ／ｐを０．２５〜１．２５とし、
かつ配向膜と液晶分子の接する点での液晶分子のチルト
角を４〜１０″程度とする。For this purpose, the alignment direction of the inner substrate is set to 180 to 360 degrees, and the d/p of the liquid crystal is set to 0.25 to 1.25.
In addition, the tilt angle of the liquid crystal molecules at the point where the alignment film and the liquid crystal molecules come into contact is about 4 to 10''.
又、偏光板も従来の液晶表示素子とは異り、その偏光軸
が、液晶分子の配向方向と２０〜７ｏ”程度すらして配
置し、干渉色を生じる領域で使用する。Also, unlike conventional liquid crystal display elements, the polarizing plate is arranged so that its polarization axis is approximately 20 to 7 degrees apart from the alignment direction of liquid crystal molecules, and is used in areas where interference colors occur.
なお、ＴＬＴＡ、スイッチ等は説明の都合士別々に示し
たが、通常はｌ乃至複数のＩＣで形成されればよい。Note that although the TLTA, switch, etc. are shown separately for convenience of explanation, they may normally be formed of one or more ICs.
本発明では、この偏光板１．２の少なくとも一方は２つ
の偏光方向を有し、それら２つの偏光方向においては夫
々異なる可視光の波長域に偏光度を有する偏光板である
。これにより、表示色の選択度が増え、使用者の好みに
合せた表示が可能となる。この例としては赤色のカラー
偏光板と緑色のカラー偏光板とを偏光方向が９０′ずれ
るように積層して貼り合せたものがある。もちろんこの
色は種々変化させてもよいし、偏光方向の交差角も９０
°からずらすこともできる。又、３枚以上のカラー偏光
板を組み合せたり、カラーフィルターを積層する等して
もよい。In the present invention, at least one of the polarizing plates 1.2 has two polarization directions, and in these two polarization directions, the polarization degree is in a different visible light wavelength range. This increases the selectivity of display colors, allowing display to match the user's preferences. An example of this is a structure in which a red color polarizing plate and a green color polarizing plate are laminated and bonded together so that the polarization directions are shifted by 90'. Of course, this color may be changed in various ways, and the crossing angle of the polarization direction may also be 90°.
You can also shift it from °. Furthermore, three or more color polarizing plates may be combined, color filters may be stacked, etc.
この偏光板１，２の内、一方は中性の白黒偏光板とすれ
ば、偏光度が高くとれるのでコントラストが良くなる。If one of the polarizing plates 1 and 2 is a neutral black-and-white polarizing plate, the degree of polarization can be high and the contrast can be improved.
又、これも一枚のカラー偏光膜を用いたり、本発明のシ
つの偏光方向を有し、それら２つの偏光方向においては
異なる可視光の波長域に偏光度を有する偏光板を用いる
こともできる。In addition, it is also possible to use a single color polarizing film, or to use a polarizing plate having the two polarization directions of the present invention and having degrees of polarization in different wavelength ranges of visible light in the two polarization directions. .
この好ましい態様の例としては、偏光板ｌには２枚のカ
ラー偏光板をその偏光方向が直交するように積層したと
ころの２つの偏光方向を有し、それら２つの偏光方向に
おいては異なる可視光の波長域に偏光度を有する偏光板
を使用し、偏光板２には中性の偏光板を用いたものであ
る。As an example of this preferred embodiment, the polarizing plate l has two polarization directions obtained by laminating two color polarizing plates such that their polarization directions are orthogonal, and the two polarization directions have different visible light. A polarizing plate having a degree of polarization in the wavelength range is used, and the polarizing plate 2 is a neutral polarizing plate.
［作用］
次に本発明による素子の動作を第１図を用いて説明する
。[Operation] Next, the operation of the element according to the present invention will be explained using FIG.
図の左半分は電圧が無印加の場合の液晶分子の配列状態
を模式的に示しである０両電極間にわたって、液晶分子
はその分子軸を電極界面にほぼ平行にかつ両電極間で捩
れている。この時偏光板２を通過して偏光された光は、
液晶分子の複屈折性のため、常光成分と異常光成分に分
離される。この両成分は、液晶−′層中を伝播する速度
が異り、液晶層を通過后に位相のずれ、即ち、光学位相
差を生じ、偏光板を通過した時点で、干渉による着色を
呈する。The left half of the figure schematically shows the arrangement state of liquid crystal molecules when no voltage is applied. There is. At this time, the light that passes through the polarizing plate 2 and is polarized is
Due to the birefringence of liquid crystal molecules, the light is separated into an ordinary light component and an extraordinary light component. These two components propagate through the liquid crystal layer at different speeds, and after passing through the liquid crystal layer, they produce a phase shift, that is, an optical phase difference, and when they pass through the polarizing plate, they exhibit coloring due to interference.
図の右半分は、しきい値以上の電圧を印加した場合であ
り、液晶分子の向きは、電極界面から液晶層中央部にか
けて連続的に変化し、液晶層中央では、電極面にほぼ垂
直に配列する。この状態にある液晶層を光が通過すると
、オフ状態と同様の作用により、干渉による着色を生ず
る。オンとオフ時に生ずる着色の濃度が異る場合、ある
いは色相が変わる場合には、表示が可能であり、これは
液晶分子の捩れ角、屈折率の異方性、液晶層の厚み、印
加電圧によって変わる。The right half of the figure shows the case when a voltage higher than the threshold is applied, and the orientation of the liquid crystal molecules changes continuously from the electrode interface to the center of the liquid crystal layer, and at the center of the liquid crystal layer, it is almost perpendicular to the electrode surface. Arrange. When light passes through the liquid crystal layer in this state, coloring occurs due to interference due to the same effect as in the off state. Display is possible when the density of coloring that occurs when on and off is different, or when the hue changes, and this depends on the twist angle of the liquid crystal molecules, the anisotropy of the refractive index, the thickness of the liquid crystal layer, and the applied voltage. change.
本発明では、この偏光板の少なくとも一方に２つの偏光
方向を有し、それら２つの偏光方向においては夫々異な
る可視光の波長領域に偏光度を有する偏光板を用いるこ
とにより、この複屈折による色相の労化に巾をもたせ、
表示の色の選択範囲を広くするト１゛とができる。In the present invention, at least one of the polarizing plates has two polarization directions, and in these two polarization directions, by using a polarizing plate having a degree of polarization in a different wavelength range of visible light, the hue due to this birefringence is to expand the labor burden of
It is possible to widen the selection range of display colors.
［実施例］
実施例１
ポリイミド系樹脂を電極上に製膜後、表面をラビングし
て、液晶の配向膜を形成し、第１図に例示したセル間隙
７．０ルｍのセルを作製した。このセル中にメルク社の
ネマチック液晶Ｚ Ｌ ｌ−２２９３に少量の光学活性
物質を添加し、オフ時に両電極間で液晶分子が２００度
捩れる様にコントロールした。このセルの一方の側に可
視元部にほぼ均一な偏光度を有する中性偏光板を、その
偏光軸が隣接する電極上での分子の方向に対し、３５度
傾く様に設置した。もう一方の側には、赤と緑に独立に
偏光を有する２枚の偏光板をその偏光軸がほぼ直交する
様に一体化し、緑の偏光板の偏光軸、および赤の偏光板
の偏光軸が隣接する電極上の液晶分子に対して、それぞ
れ４０°および５０°傾く様に配置した。この素子の背
景の色は緑色であった。この素子に１／１００口ｕｔｙ
、 １／１１Ｂｉａｓのタイナミ波形を印加して、表示
を行ったところ緑色の背景に赤い文字は表示できた。こ
の際、セル両側の偏光軸を前記角度に対し±２０°ずら
しても、色調の多少の変化はあるが、正常なコントラス
トが得られた。[Example] Example 1 After forming a film of polyimide resin on an electrode, the surface was rubbed to form a liquid crystal alignment film, and a cell with a cell gap of 7.0 lumen as illustrated in FIG. 1 was manufactured. . In this cell, a small amount of optically active substance was added to Merck's nematic liquid crystal Z L 1-2293, and the liquid crystal molecules were controlled to be twisted by 200 degrees between the two electrodes when off. A neutral polarizing plate having a substantially uniform degree of polarization in the visible region was placed on one side of the cell so that its polarization axis was inclined at 35 degrees with respect to the direction of molecules on the adjacent electrode. On the other side, two polarizing plates having independently polarized light for red and green are integrated so that their polarizing axes are almost orthogonal, and the polarizing axis of the green polarizing plate and the polarizing axis of the red polarizing plate are integrated. The electrodes were arranged so that they were tilted by 40° and 50°, respectively, with respect to the liquid crystal molecules on the adjacent electrodes. The background color of this device was green. 1/100 mouth UTY for this element
When a dynamic waveform of 1/11 Bias was applied and displayed, red characters could be displayed on a green background. At this time, even if the polarization axes on both sides of the cell were shifted by ±20° with respect to the above angle, normal contrast was obtained although there was some change in color tone.
また積層偏光板の偏光軸の相対位置を入れ替えた場合に
は、赤色の背景から、緑の表示を行う事が可能であった
。Furthermore, when the relative positions of the polarization axes of the laminated polarizing plates were switched, it was possible to display green from a red background.
実施例２
実施例１とほぼ同一の方法で液晶分子の捩れ角が２４０
度のセルを作成した。＠層偏光板として、橙色と青に別
々に偏光を有するものを同様に用いて駆動したところ、
ピンク色と黒との色変化が可能であった。Example 2 The twist angle of the liquid crystal molecules was 240 using almost the same method as in Example 1.
Created a degree cell. When a @ layer polarizing plate with separate polarization for orange and blue was used and driven in the same way,
It was possible to change the color between pink and black.
実施例３
実施例１とほぼ同一の方法で液晶分子の敗れ角が２８０
度のセルを作成した。同様にして赤と青の積層偏光板を
用いて駆動したところ、赤紫と青緑の表示が得られた。Example 3 Using almost the same method as Example 1, the defeat angle of liquid crystal molecules was 280.
Created a degree cell. When driven in the same manner using red and blue laminated polarizing plates, red-purple and blue-green displays were obtained.
［発明の効果］
以上の如く、本発明は少なくとも一方に、異る波長領域
に偏光を有する２枚の偏光板を、その偏光軸がほぼ直交
して積層し、設置したので、従来にない色相変化が可能
となり、色相の選択幅を広げる事を可能とした優れたも
のである。[Effects of the Invention] As described above, the present invention has two polarizing plates having polarized light in different wavelength regions on at least one side, which are laminated and installed so that their polarization axes are almost perpendicular to each other, so that an unprecedented hue can be obtained. This is an excellent product that allows for a wide range of hue selections.
以上の実施例においては、偏光板のみを用いたが、これ
にカラーフィルターを組み合せて、背景および表示色を
共に変化させて、色相を調節して使用する事も有用性が
高い。In the above embodiments, only a polarizing plate was used, but it is also highly useful to combine this with a color filter to change both the background and display colors and adjust the hue.
第１図は本発明の基本的構成を示す断面説明図である。
１．２：偏光板、 ３Ａ、３Ｂ：透明基板４Ａ、 ４
Ｂ：透明電極、 ５Ａ、５Ｂ：配向膜ｆｆＡ、 ８８：
電源、 ７Ａ、 ７Ｂ：スイッチ８：シール材、９
：オフ時の液晶分子の配列１０：オン時の液晶分子の配
列FIG. 1 is an explanatory cross-sectional view showing the basic configuration of the present invention. 1.2: Polarizing plate, 3A, 3B: Transparent substrate 4A, 4
B: Transparent electrode, 5A, 5B: Alignment film ffA, 88:
Power supply, 7A, 7B: Switch 8: Seal material, 9
: Arrangement of liquid crystal molecules when off 10: Arrangement of liquid crystal molecules when on
Claims (3)
、液晶分子軸が電極面に対しやや傾いてほぼ平行に配列
する様に処理され、周辺をシール材にて封止されたセル
内に、誘電異方性が正のネマチックあるいはコレステリ
ック液晶が封入され、セルの外側に偏光板が設置され、
かつ相対向する電極間に電圧を印加する手段を備え、印
加する電圧の大きさに応じて、セル内を通過する光の干
渉状態を変えて光学変化を起す液晶表示素子において、
少なくとも一方の偏光板として、２つの偏光方向を有し
、それら２つの偏光方向においては 夫々異なる可視光の波長領域に偏光度を有する偏光板を
用いたことを特徴とする液晶表示素子。(1) A cell in which the inner surface of a pair of transparent electrodes arranged approximately parallel to each other is treated so that the liquid crystal molecular axes are slightly tilted and aligned approximately parallel to the electrode surface, and the periphery is sealed with a sealant. A nematic or cholesteric liquid crystal with positive dielectric anisotropy is sealed inside the cell, and a polarizing plate is installed outside the cell.
In a liquid crystal display element which is provided with a means for applying a voltage between opposing electrodes, and which changes the interference state of light passing through the cell depending on the magnitude of the applied voltage to cause an optical change,
A liquid crystal display element characterized in that at least one of the polarizing plates is a polarizing plate having two polarization directions, each of which has a degree of polarization in a different wavelength range of visible light.
視光の波長領域に偏光度を有する２枚の偏光板を貼り合
せた構造を有する特許請求の範囲第１項記載の液晶表示
素子。(2) The liquid crystal display element according to claim 1, wherein the polarizing plate having two polarization directions has a structure in which two polarizing plates having polarization degrees in different wavelength regions of visible light are bonded together.
１項または第２項記載の液晶表示素 子。(3) The liquid crystal display element according to claim 1 or 2, wherein the two polarization directions are perpendicular to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61060753A JP2559215B2 (en) | 1986-03-20 | 1986-03-20 | Liquid crystal display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61060753A JP2559215B2 (en) | 1986-03-20 | 1986-03-20 | Liquid crystal display element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62218930A true JPS62218930A (en) | 1987-09-26 |
| JP2559215B2 JP2559215B2 (en) | 1996-12-04 |
Family
ID=13151344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61060753A Expired - Fee Related JP2559215B2 (en) | 1986-03-20 | 1986-03-20 | Liquid crystal display element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2559215B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5438150A (en) * | 1977-09-01 | 1979-03-22 | Seiko Instr & Electronics Ltd | Color liquid crystal display device |
| JPS60107020A (en) * | 1983-07-12 | 1985-06-12 | ビ−ビ−シ− アクチエンゲゼルシヤフト ブラウン ボヴエリ ウント コムパニ− | Liquid crystal display |
-
1986
- 1986-03-20 JP JP61060753A patent/JP2559215B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5438150A (en) * | 1977-09-01 | 1979-03-22 | Seiko Instr & Electronics Ltd | Color liquid crystal display device |
| JPS60107020A (en) * | 1983-07-12 | 1985-06-12 | ビ−ビ−シ− アクチエンゲゼルシヤフト ブラウン ボヴエリ ウント コムパニ− | Liquid crystal display |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2559215B2 (en) | 1996-12-04 |
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