JPS60122920A - Liquid crystal display - Google Patents
Liquid crystal displayInfo
- Publication number
- JPS60122920A JPS60122920A JP59233415A JP23341584A JPS60122920A JP S60122920 A JPS60122920 A JP S60122920A JP 59233415 A JP59233415 A JP 59233415A JP 23341584 A JP23341584 A JP 23341584A JP S60122920 A JPS60122920 A JP S60122920A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- display device
- polarizers
- polarizer
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
- G02F1/13471—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells
- G02F1/13473—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells for wavelength filtering or for colour display without the use of colour mosaic filters
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
- G02F1/133533—Colour selective polarisers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
- G02F1/1396—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- 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】
産業上の利用分骨：
本発明は特許請求の範囲第１項の上位概念による液晶表
示器に関する。DETAILED DESCRIPTION OF THE INVENTION Industrial Application: The present invention relates to a liquid crystal display according to the generic concept of claim 1.
従来の技術および発明が解決しようとする問題点：
液晶セルはすでに古くから公知であり、文献に詳細に記
載される。ポジチブ形表示器のための常用液晶セルは制
御の際その色が黒く変化し一パックグラウンｒおよび制
御されないエレメントは白色または灰色に見える。液晶
セルの色変化はたとえばセルの前後にそれぞれ１つの偏
光子を配置し、かつセルにコレステリック液晶物質を充
てんする場合に可能である。それによって電圧印加の際
の偏光面の回転に応じて色変化が可能である。さらに液
晶セル自体に色素を混合し、それによっである範囲内で
色を変化させることもすでに公知である。この液晶セル
により２つの補色間の迅速な切替が可能である。The prior art and the problem that the invention seeks to solve: Liquid crystal cells have already been known for a long time and are described in detail in the literature. A conventional liquid crystal cell for a positive display changes its color to black when controlled, and the uncontrolled elements appear white or gray. A color change in a liquid-crystal cell is possible, for example, if one polarizer is placed before and after the cell and the cell is filled with a cholesteric liquid-crystal substance. Thereby, a color change is possible depending on the rotation of the plane of polarization when a voltage is applied. Furthermore, it is already known to mix dyes into the liquid-crystal cells themselves and thereby change the color within a certain range. This liquid crystal cell allows rapid switching between two complementary colors.
他の色は公知装置によれば切替できない。Other colors cannot be switched according to known devices.
問題点を解涙するための手段：
前記公知装置の欠点は特許請求の範囲第１項または第２
項記載の特徴を有する本発明による液晶表示器により解
決される。Means for solving the problem: The drawbacks of the known device are as follows:
The problem is solved by a liquid crystal display according to the invention having the features described in Section 1.
作用：
本発明による液晶表示器は公知装置に比してフントラス
トが改善され、温度依存性が低い利点を有する。さらに
４色まで切替可能である利点が挙げられる。さらに５つ
の原色を使用すれば任意の混色をつくることができる。Effect: The liquid crystal display according to the present invention has the advantage of improved fundus resistance and low temperature dependence compared to known devices. Another advantage is that up to four colors can be switched. Furthermore, by using five primary colors, any color mixture can be created.
特許請求の範囲第３項〜第７項記載の手段により第１項
または第２項記載の液晶表示器を有利に改善することが
できる。とくにマトリックスの形の表示装置のセル形構
造によって融通性ある色の情報を表示することが達成さ
れる。本発明の表示装置はそれゆえ平らな映像スクリン
たとえばテレビ再生にも適する。The liquid crystal display device described in claim 1 or 2 can be advantageously improved by the means described in claims 3 to 7. In particular, the display of flexible color information is achieved by the cellular structure of the display device in the form of a matrix. The display device of the invention is therefore also suitable for flat video screen playback, for example television.
実施例： 次に本発明の２つの実施例を図面によシ説明する。Example: Next, two embodiments of the present invention will be explained with reference to the drawings.
第１図は色を切替えうる表示装置を示す。ランプ１０か
ら発する光は中性偏光子１１に送られる。偏光子１１に
よってこの光は直線偏光になる。この光は液晶セル１２
に達する。液晶セル１２は捩れネマチック形である。液
晶セル１２がスイッチオンされているか（偏光面の９０
゜回転）またはスイッチオンされているか（偏光面の０
０ 回転）Ｋ応じて後置の偏光子１３′または偏光子１
４が吸収ｌ−る。偏光子１３および１牛は選択的偏光子
として形成される。たとえば偏光子１３は赤色、偏光子
１４は緑色でありうる。それによって液晶セル１２の切
替に応じて赤偏光子１３または縁端光子１４が吸収する
。FIG. 1 shows a display device with switchable colors. Light emitted from lamp 10 is sent to neutral polarizer 11. A polarizer 11 converts this light into linearly polarized light. This light is the liquid crystal cell 12
reach. The liquid crystal cell 12 is of twisted nematic type. Is the liquid crystal cell 12 turned on?
rotation) or switched on (zero rotation of the plane of polarization)
0 rotation) Post polarizer 13' or polarizer 1 depending on K
4 is absorbed. Polarizers 13 and 1 are formed as selective polarizers. For example, polarizer 13 may be red and polarizer 14 may be green. As a result, the red polarizer 13 or the edge photons 14 are absorbed depending on the switching of the liquid crystal cell 12.
２つの偏光子１３および１４ＶＣ−Ｍｌ、・・９ツクグ
ラウンＩ２をつくるために役立つ液晶セル１５が続く。Two polarizers 13 and 14 VC-Ml, . . . , a liquid crystal cell 15 follows which serves to create the ground I2.
表示装置は中性偏光子１６によって閉鎖される。観察者
１７ＶｃはランプｌＯから発し、偏光子によってフィル
タされ、ＬＣＤセル１２および１５によって回転した光
が認められる。全体とし−ここの場合牛つの動作状態を
調節することができ、観察者１７に３種の色として見え
る。The display device is closed by a neutral polarizer 16. Observer 17Vc sees light emitted from lamp IO, filtered by a polarizer, and rotated by LCD cells 12 and 15. Overall, in this case the two operating states can be adjusted and appear to the observer 17 as three different colors.
（小々の切替状態が次表に示される。(The minor switching states are shown in the following table.
上記構成により多くの使用目的の際概観性を上昇するた
めに必要なネガテブコントラストでの色の切替が簡単に
可能になる。たとえば自動車の場合切替によって経済的
または不経済的走行法を表示し、″またはディジタルタ
コメータでは一定速度をオーバした際線字から赤字へ切
替えることができる。それによってたとえばＩ−ゞライ
パは市内走行の際そこに所定の速度を超え、またはたと
えば所定の高速を超えているかどうか容易に知る−こと
ができる。The above configuration allows easy color switching with negative contrast, which is necessary to improve visibility in many applications. For example, in the case of a car, economical or uneconomic driving methods can be displayed by switching, or in the case of a digital tachometer, when a certain speed is exceeded, it can be switched from a line to a red line. It can then be easily known whether a predetermined speed is exceeded or, for example, a predetermined high speed is exceeded.
偏光子組合せの変化によりボジチブフントラストの３色
表示へ移行することができる。このような表示装置の構
成は第２図に示される。光源ｌＯに選択的偏光子として
形成された偏光子１１が続く。偏光子１１はたとえば青
色を吸収する。選択的偏光子１１に液晶セル１２が続く
。液晶セル１２の後方にたとえば赤色を吸収する選択的
偏光子２１が配置される。選択的偏光子２１にもう１つ
の液晶セル１５が続く。第１実施例の場合のようにこの
場合も２つの液晶セルはＴＮ形である。液晶セル１５は
たとえば緑色を吸収ｌ−る選択的偏光子２２によって閉
鎖さＩ［る。観察者１７はこのような構成の表示装置を
見る。By changing the combination of polarizers, it is possible to shift to a positive three-color display. The structure of such a display device is shown in FIG. A polarizer 11, which is designed as a selective polarizer, follows the light source lO. For example, the polarizer 11 absorbs blue light. A liquid crystal cell 12 follows the selective polarizer 11 . A selective polarizer 21 that absorbs red light, for example, is arranged behind the liquid crystal cell 12. Another liquid crystal cell 15 follows the selective polarizer 21 . As in the first embodiment, the two liquid crystal cells are of the TN type in this case as well. The liquid crystal cell 15 is closed by a selective polarizer 22 which absorbs green light, for example. The observer 17 views the display device having such a configuration.
３つの偏光子１１．２１および２２は図面に矢印で示才
嬬光面内で振動する光の一定のスペクトル分を吸収オる
。液晶セル１２および１５のスイッチオン状態に応じて
再び４種の可能性が生じ、観察者に４種の色が見える。The three polarizers 11, 21 and 22 absorb a certain spectrum of light vibrating in the optical plane, as indicated by arrows in the figure. Depending on the switched-on state of the liquid crystal cells 12 and 15, four possibilities arise again and four colors are visible to the viewer.
この例の液晶のスイッチ状態に応する色は次表に示され
る：
偏光ｒ−の色の他の選択によって観察者１’ＩＫ他の色
を示すことが可能である。The colors corresponding to the switch states of the liquid crystal in this example are shown in the following table: By other choices of the colors of the polarization r- it is possible to show the viewer 1'IK other colors.
前記配置により選択的偏光子の３つの色の間の切替が可
能であるのみならず、２つの液晶セル１２および１５の
電極を互いにずらして制御すれば混色の発生にも使用さ
れる。この場合眼が早℃・変化にもはや追ずいし得ない
ような画像変化周波数を選択すればヒトの眼中で混色へ
の集積が行われる。３原色の選択的偏光子を使用すれば
３つの頂点を含む色３角形内のすべての色が表示される
。Said arrangement not only allows switching between the three colors of the selective polarizer, but can also be used to generate color mixtures if the electrodes of the two liquid crystal cells 12 and 15 are controlled to be offset relative to each other. In this case, if an image change frequency is selected such that the eye can no longer follow the rapid temperature change, color mixture will accumulate in the human eye. Using a three-primary selective polarizer will display all colors within a color triangle containing three vertices.
たとえばテレビ再生にも必要な融通性の高い色の情報を
得るため、２つの液晶セルは有オリにマトリックス表示
器として形成され、その際このマトリックス表示器は集
積１ライパトランジスタをガラス上に有するとくに能動
表示器である。In order to obtain the flexible color information required for example for television reproduction, the two liquid crystal cells are typically formed as a matrix display, the matrix display having an integrated Leipper transistor on the glass. It is an active indicator.
前記液晶表示器により多数の色光源、光導体′または光
ファイバなしに色を切替える可能性が得られる。簡単な
構造によって広い温度範囲を有し、外部の気象影響に対
し安定である。それによって前記系はとくに自動車に使
用するためにも適する。Said liquid crystal display provides the possibility of switching colors without multiple color light sources, light guides or optical fibers. Due to its simple structure, it has a wide temperature range and is stable against external weather influences. The system is thereby also particularly suitable for use in motor vehicles.
第１図は第１実施例、第２図は第２実施例の液晶表示器
の構成を示す展開斜視図である。
ＩＯ・・光源、１１，１３，１４，１６，２１．２２・
・・偏光子、１２．１５・・・液晶セル第１頁の続き
０発 明 者 ヴインフリート・ケー ドイニツヒ ８FIG. 1 is a developed perspective view showing the structure of a liquid crystal display device according to a first embodiment, and FIG. 2 is a developed perspective view showing the structure of a liquid crystal display device according to a second embodiment. IO・・Light source, 11, 13, 14, 16, 21. 22・
...Polarizer, 12.15...Liquid crystal cell Continued from page 1 0 Inventor Winfried K. Deutsch 8
Claims (1)
する液晶表示器において、２つの液晶セル（１２，１５
）の間に偏光方向が互℃・［９０° ずれた２つの選択
的偏光子（１３゜１牛）が配置さ１％ていることを特徴
とする液晶表示器。 ２゜ 前面および背面偏光子ならびに２つの偏ツ６子の
間に２つの液晶セルを有する液晶表示器妊おいて、偏光
子（１１，２２）が選択的偏光子として形成さｉｔ１液
晶セル（１２，１５）の間にもう１つの選択的偏光子（
２１）力１配置されていることを特徴とｊる液晶表示２
１３ 液晶表示器の後方に光源（１０）が設置さ第１．
ている特許請求の範囲第１項ｔたは第２項記載の表示器
。 ４、表示器が行の形に形成さオｔ１その行がマトリック
ス内に配、置されている特許請求の範囲第１項から第３
項までのいず匙か１項に記載の表示器。 ５、個々の像点のためのドライノζトランジスタが液晶
面内の支持材料上にそれぞｔ個々の像点に隣接して配置
さｔている特許請求の範囲第４項記載の液晶表示器。 ６、 液晶表示器がＴＮ 液晶セルから形成さオｔてい
る特許請求の範囲第１項から第５項までのいずれか１項
に記載の表示器。 ■、液晶セル（１２，１５）が時間的に互いにず扛て、
眼が追ずいし得ない像変化周波数で制御される特許請求
の範囲第１項から第６項までのいずれか１項に記載の表
示器。[Claims] l In a liquid crystal display having front and rear polarizers and two liquid crystal cells, two liquid crystal cells (12, 15
) A liquid crystal display device characterized in that two selective polarizers (13° 1°) whose polarization directions are shifted by 90° from each other are arranged between 1% and 1%. 2° In a liquid crystal display device having front and rear polarizers and two liquid crystal cells between two polarizers, the polarizers (11, 22) are formed as selective polarizers and it1 liquid crystal cell (12 , 15) with another selective polarizer (
21) Liquid crystal display 2 characterized by the fact that the power 1 is arranged
13 A light source (10) is installed behind the liquid crystal display.
A display device according to claim 1 or 2. 4. Claims 1 to 3, in which the display is formed in the form of rows and the rows are arranged and arranged in a matrix.
The indicator listed in Section 1 or above. 5. A liquid crystal display according to claim 4, characterized in that the Drynoζ transistors for the individual image points are arranged on a support material in the plane of the liquid crystal, in each case adjacent to the individual image points. 6. The display device according to any one of claims 1 to 5, wherein the liquid crystal display device is formed from a TN liquid crystal cell. ■, the liquid crystal cells (12, 15) are temporally separated from each other,
The display device according to any one of claims 1 to 6, which is controlled at an image change frequency that cannot be followed by the eye.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833340468 DE3340468A1 (en) | 1983-11-09 | 1983-11-09 | Liquid crystal display |
| DE3340468.2 | 1983-11-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60122920A true JPS60122920A (en) | 1985-07-01 |
Family
ID=6213833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59233415A Pending JPS60122920A (en) | 1983-11-09 | 1984-11-07 | Liquid crystal display |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS60122920A (en) |
| DE (1) | DE3340468A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7439683B2 (en) | 2003-05-21 | 2008-10-21 | Pure Depth Limited | Backlighting system for display screen |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4867536A (en) * | 1986-02-05 | 1989-09-19 | Ford Motor Company | Color selectable liquid crystal display system |
| CA1270583A (en) * | 1986-02-05 | 1990-06-19 | Frederick J. Porter | Color selectable liquid crystal display system |
| DE4011893A1 (en) * | 1990-04-12 | 1991-10-17 | Liesegang Fa Ed | LIQUID CRYSTAL CELL ARRANGEMENT |
| US5220442A (en) * | 1991-09-06 | 1993-06-15 | Xerox Corporation | Method of making color liquid crystal display with dead front appearance |
| SE505574C2 (en) * | 1995-12-22 | 1997-09-15 | Pricer Ab | Method and device for controlling colors on an LCD screen |
-
1983
- 1983-11-09 DE DE19833340468 patent/DE3340468A1/en not_active Withdrawn
-
1984
- 1984-11-07 JP JP59233415A patent/JPS60122920A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7439683B2 (en) | 2003-05-21 | 2008-10-21 | Pure Depth Limited | Backlighting system for display screen |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3340468A1 (en) | 1985-05-15 |
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