JPS6089042A - Color display device - Google Patents

Color display device

Info

Publication number
JPS6089042A
JPS6089042A JP19730183A JP19730183A JPS6089042A JP S6089042 A JPS6089042 A JP S6089042A JP 19730183 A JP19730183 A JP 19730183A JP 19730183 A JP19730183 A JP 19730183A JP S6089042 A JPS6089042 A JP S6089042A
Authority
JP
Japan
Prior art keywords
color
display
light source
picture
display element
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
Application number
JP19730183A
Other languages
Japanese (ja)
Inventor
Masahiro Kawamoto
河元　正博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP19730183A priority Critical patent/JPS6089042A/en
Publication of JPS6089042A publication Critical patent/JPS6089042A/en
Pending legal-status Critical Current

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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors

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)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Liquid Crystal (AREA)

Abstract

PURPOSE:To display a color picture with a good resolution by providing a color display device with a plurality of display elements which can change the light transmittance and the color light source which irradiates the display elements from their back and by selecting the color emitted from the color light source in synchronization with the drive of each display element. CONSTITUTION:A color display device is provided with a display element section 12 consisting of a plurality of display elements which are distributed all over the display surface and exhibit black and white display by changing light transmittance, and also with a colored light source 13 such as a fluorescent display tube which is arranged behind the display element section and which emits colored lights such as red, green and blue lights. The display element section 12 and the colored light source 13 are connected to a picture drive circuit 14 and color selection circuit 15. A control circuit 16 outputs a picture signal to the picture drive circuit 14, at the same time, it delivers to the color selection circuit 15, a control signal which is synchronized with the picture signal and which selects the color corresponding to the picture signal. Accordingly, a color picture can be obtained by combining the picture made by display elements for black and white display with the colored light source which can change to a various color, and thus the resolution and contrast are improved.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は任意の表示画像を任意の色で表示するカラー表
示装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a color display device that displays an arbitrary display image in an arbitrary color.

〔発明の技術的背景とその問題点〕[Technical background of the invention and its problems]

カラー表示装置として、現在カラーＣＲＴ、プラズマ、
螢光表示管、発光ダイオード（以下ＬＥＤと呼ぶ）、液
晶などの表示素子を使用したものが知られている。これ
らのカラー表示装置は、本質的には赤、緑、青の３原色
をそれぞれ表示する多数の表示要素で構成されている。Color display devices currently include color CRT, plasma,
Display devices using display elements such as fluorescent display tubes, light emitting diodes (hereinafter referred to as LEDs), and liquid crystals are known. These color display devices essentially consist of a large number of display elements that display each of the three primary colors of red, green, and blue.

そして、このｊＪｊＸ色の紹合せで任意なｉｉ＆ｌｉ像
を任意な色で表示する。Then, by introducing this jJjX color, an arbitrary ii&li image is displayed in an arbitrary color.

しかし、このような構成であるため、自縄表示などの単
色表示に比べ、表示要素はう倍となる。However, because of this configuration, the number of display elements is doubled compared to a monochrome display such as a rope display.

このため、単色表示に比べ、駆動方法が複雑となり、ま
た、画像の分解能、コントラストあるいは輝度が低下す
るなどの問題点がある。Therefore, compared to monochromatic display, the driving method is more complicated, and there are also problems such as a reduction in image resolution, contrast, or brightness.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、駆動が容易で、画像の分解能がよく、
コントラストや輝度の高くなるカラー表示装置を提供す
ることにある。The objects of the present invention are to be easy to drive, have good image resolution,
An object of the present invention is to provide a color display device with high contrast and brightness.

〔発明の概要〕[Summary of the invention]

本発明によるカラー表示装置は、表示画面全域に分布さ
れそれぞれ光の透過率を任意に変化し得る複数の表示素
子と、これら表示素子の背面から表示面全域なほぼ均一
に光照射するものであって少な（とも２色の発光が可能
である色光源と、前記各表示素子の光透過率をそれぞれ
個別に変化させ得る画像駆動回路と、この画像駆動回路
による各表示素子の駆動に同期して前記色光源の発光色
を選択する色選択回路とを備えており、前記各表示素子
の光透過率を変化させて任意の画像を作り、これに色光
源からの選択された色を発光させるようにしたものであ
る。The color display device according to the present invention includes a plurality of display elements that are distributed over the entire display screen and whose light transmittance can be arbitrarily changed, and that almost uniformly irradiates the entire display surface with light from the back of these display elements. A color light source capable of emitting light in two colors; an image drive circuit capable of individually changing the light transmittance of each display element; and a color light source capable of emitting light in two colors; and a color selection circuit that selects the emission color of the color light source, and changes the light transmittance of each of the display elements to create an arbitrary image, and causes the color light source to emit the selected color. This is what I did.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明を図面に示す一実施例を参照して詳細に説
明する。Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the drawings.

３１１図において、ａｌｌは表示画面で、複数の表示素
子を画面全域に分布させて成る表示素子部（１りと、Ｅ
の表示素子部０の背面から表示画面ｌＩＤの全域をほぼ
均一にかつ互いに異なった色で光照射する色光源（１３
とで構成される。上記表示素子としては、光の透過率が
任意に変化し【白黒表示を行う、例えば液晶表示素子な
用いる。また、色光源Ｑ３１は赤、緑、青などの異なる
色で発光するものであり、例えば螢光表示管によるもの
を用いる。ａ４は画像駆動回路で、表示素子部（１２を
構成する各液晶表示素子の光透過率を変化させ、白黒に
よる任意の表示画像を作成する・。０９は色選択回路で
、上記画像駆動回路α滲による各液晶表示素子の駆動に
同期して対応する色を発光丁べ（色光源（１３を動作さ
せる。In Fig. 311, all is a display screen, and a display element section (one, E
A color light source (13
It consists of As the display element, for example, a liquid crystal display element whose light transmittance changes arbitrarily and displays black and white is used. Further, the colored light source Q31 emits light in different colors such as red, green, and blue, and uses a fluorescent display tube, for example. a4 is an image driving circuit, which changes the light transmittance of each liquid crystal display element constituting the display element section (12) to create an arbitrary display image in black and white. 09 is a color selection circuit, which is connected to the image driving circuit α. In synchronization with the driving of each liquid crystal display element by blurring, a color light source (13) is operated to emit light in a corresponding color.

（１６１は制御回路で、画像駆動回路Ｉに対し画像信号
を与えるとともに、色選択回路（１９には上記画像信号
に同期し、かつそれに対応した色を選択すべく色選択回
路０５を制御する。(161 is a control circuit that supplies an image signal to the image drive circuit I, and a color selection circuit (19) that controls the color selection circuit 05 in synchronization with the image signal and to select a color corresponding thereto.

ここで、液晶表示素子を用いた表示素子部ｔｔａの構造
について説明する。液晶表示素子としては白黒表示が可
能であればよく、例えばＴＮ方式やゲストホスト方式な
どの表示方式を使用した液晶表示が使用できる。液晶表
示による表示素子部ｆｉ３は次のように構成する。すな
わち、図示していないが、Ｘ−Ｙの多数の電極の交点が
１つの表示素子となる構成である。従って、各Ｘおよび
Ｙの電極に外部から電気信号を与えて時分割駆動する方
式や、Ｘ−Ｙの電極の各交点に形成した薄膜トランジス
タにて液晶を駆動する方式等を採用できる。Here, the structure of the display element section tta using a liquid crystal display element will be explained. The liquid crystal display element may be used as long as it can display black and white, and for example, a liquid crystal display using a display method such as a TN method or a guest-host method can be used. The display element section fi3 using a liquid crystal display is constructed as follows. That is, although not shown, the intersection of a large number of X-Y electrodes forms one display element. Therefore, it is possible to adopt a method in which time-division driving is performed by applying external electric signals to each X and Y electrode, or a method in which the liquid crystal is driven by a thin film transistor formed at each intersection of the X-Y electrodes.

次に前記色光源ａ３の一例として、螢光発光管によるも
のを才２図により説明する。図において、（２１１はガ
ラス容器で、真空状態に保持された内部にはフィラメン
トによる陰極■、メツシュ状のグリッド電極（ハ）が積
層配置されており、さらに、その下方には板状の陽極Ｑ
４が複数本並設されている。Next, as an example of the color light source a3, one using a fluorescent light emitting tube will be explained with reference to FIG. In the figure, (211 is a glass container, inside of which is kept in a vacuum state, a filament cathode (■) and a mesh-like grid electrode (c) are stacked, and below that is a plate-shaped anode (Q).
4 are installed in parallel.

これら陽極図にはそれぞれ螢光体（２）が塗布されてお
り、後述する電圧印加により赤α９、縁日、青（６）を
発光する。また、これら陽極シ４のうち、同色を発光す
るものは共通接続され、対応する端子（２６Ｒ）（２６
Ｇ）（２６Ｂ）に接続する。Each of these anode diagrams is coated with a phosphor (2), and emits red α9, Ennichi, and blue (6) when a voltage is applied, which will be described later. Also, among these anodes 4, those that emit the same color are commonly connected, and the corresponding terminals (26R) (26R) are connected in common.
G) Connect to (26B).

上記色光源Ｑ３は、フィラメントによる陰極ｃＩｚから
加熱放出された電子が、正の電位におかれたメツシュ状
のグリッド電極（ハ）により加速され、正の電位にある
陽極（至）に塗られた螢光体（ハ）に当ることにより発
光する。例えば端子（２６Ｒ）をｅとし、他の端子（２
６Ｇ）（２６Ｂ）をｅとすれば、赤（ロ）の螢光体のみ
が発光するので、矛１図で示す表示画面１１１Ｉ全体を
均一に赤色表示する光源となる。同様に端子（２６Ｇ）
　ヲｅ、　（ｚａＲ）（ｚａＢ）ヲｅ　Ｋ　Ｙ　し４ｆ
緑色”ｌｔ源トナリ、（２６Ｂ）’ｔ■、（２６Ｒ）（
２６Ｇ）　ヲｅ　トスレば青色光源となる。In the color light source Q3, electrons heated and emitted from the cathode cIz by a filament are accelerated by a mesh-like grid electrode (c) placed at a positive potential, and applied to the anode (to) at a positive potential. It emits light when it hits a fluorescent material (c). For example, set the terminal (26R) to e, and set the other terminal (26R) to e.
6G) (26B) as e, only the red (b) phosphor emits light, so it becomes a light source that uniformly displays red on the entire display screen 111I shown in Figure 1. Similarly terminal (26G)
Wow, (zaR) (zaB) Wow K Y shi4f
Green"ltsourcetonari,(26B)'t■,(26R)(
26G) If it is twisted, it becomes a blue light source.

次に画像をカラー表示する場合を説明する。才１図で示
した画像駆動回路α４は表示画面に任意の画像を表示す
べく、表示素子部ａりに画ｇｌ信号な与え、各液晶表示
素子の光透過率を変化させて白黒の画像を作り出す。ま
た、色選択回路（１５１は、上記画像信号に同期して色
光源αＪの発光色を選択しこれを発光させる。従って、
白黒で作られた画像は選択された発光色にかえられる。Next, a case where an image is displayed in color will be explained. In order to display an arbitrary image on the display screen, the image driving circuit α4 shown in Figure 1 applies an image gl signal to the display element section a, and changes the light transmittance of each liquid crystal display element to display a black and white image. produce. Further, the color selection circuit (151) selects the emission color of the color light source αJ and causes it to emit light in synchronization with the image signal.
Images created in black and white are changed to the selected luminescent color.

すなわち、カラー画像を表示する場合、下表で示すよう
に、期間１において、表示素子部ａカが、赤色となる画
像ｌを白黒で表示すると、これに同期して色光源（１３
１は赤色を発光する。また、期間２で緑色となる画像２
を白黒で表示するとこれに同期して色光源０は緑色を発
光する。さらに、期間うで青色となるべき画ｆｉｌ　３
を白色で表示すると、これに同期して色光源ａ３は緑色
を発光する。これら期間１．２，５で表示された色彩像
が合成され、カラー画像として肉眼で観測される。That is, when displaying a color image, as shown in the table below, during period 1, when the display element section a displays an image l that is red in black and white, the color light source (13
1 emits red light. Also, image 2 that becomes green in period 2
When displayed in black and white, color light source 0 emits green light in synchronization with this. Furthermore, the image fil 3 that should be blue during the period
When displayed in white, the colored light source a3 emits green light in synchronization with this. The color images displayed during these periods 1, 2, and 5 are combined and observed with the naked eye as a color image.

ここで、上記本発明のカラー表示装置を従来例と比較し
て説明する。従来の、例えば液晶表示素子単独でカラー
表示する場合、本発明における白黒の表示素子による表
示要素１点に対し、赤、緑、青のそれぞれ個別に選択可
能な３点の表示要素が必要のため、本発明の３倍の表示
要素が必要となる。供のため、分解能を上げることが難
しく、製造上問題であったが、本発明ではこの点が解決
され分解能は大幅に向上した。また、従来装置は、赤、
緑、青の各点をそれぞれ個別に選択駆動する必要があっ
たため回路が複雑であり、高いコントラストや輝度はの
ぞめなかった。しかし、本発明では、赤、緑、青の各発
光体は表示画面１１１）の全域に均一に分布しているが
０、従来のように各色毎の個別選択をする必要はなく、
各期間毎に同じ包金ての発光体を選択して発光させるた
め、回路が簡単となり、しかも、高い輝度が得られる。Here, the color display device of the present invention will be explained in comparison with a conventional example. For example, when displaying color using a conventional liquid crystal display element alone, three display elements of red, green, and blue, each of which can be selected individually, are required for one display element of the present invention using a black and white display element. , three times as many display elements as in the present invention are required. Because of this, it was difficult to increase the resolution, which was a manufacturing problem, but the present invention solved this problem and significantly improved the resolution. In addition, the conventional device has red, red,
Because it was necessary to selectively drive each of the green and blue points individually, the circuit was complicated, and high contrast and brightness could not be achieved. However, in the present invention, although the red, green, and blue light emitters are uniformly distributed over the entire area of the display screen 111), there is no need to individually select each color as in the conventional method.
Since the same light-emitting body is selected for each period to emit light, the circuit is simple and high brightness can be obtained.

上記実施例では、表示素子として液晶表示素子を例示し
たが、外部からの信号により光の透過率を可変できるも
のであれば全て使用可能であり、例えばエレクトロクロ
ミック素子なども使用できる。また、色光源として螢光
表示管を例示したが、このほかに一般の色付きランプや
ＬＥＤなとも使用出来る。色光源を構成する赤、緑、青
の５色の発光体としてストライブ状のものを例示したが
、表示素子と１対１に対応する点状のものでもよく、さ
らには表示素子より大きな点であってもよい。In the above embodiments, a liquid crystal display element was used as an example of the display element, but any display element whose light transmittance can be varied by an external signal can be used. For example, an electrochromic element can also be used. Further, although a fluorescent display tube is shown as an example of a colored light source, a general colored lamp or LED can also be used. Although a stripe-shaped light emitting body is exemplified as the five-color light emitting body of red, green, and blue that constitutes the color light source, it may also be a dot-like one that corresponds one-to-one with the display element, or even a dot that is larger than the display element. It may be.

この場倉、表示素子と色光源との間に光拡散板を加えて
元を均一化するとよい。色光源の発光色は赤、緑、青の
５色を示したが、特定の色のみを表示するものであれば
発光色を２色としてもよい。In this case, it is preferable to add a light diffusing plate between the display element and the color light source to make the light uniform. Although the color light sources emit light in five colors, red, green, and blue, two colors may be used as long as only a specific color is to be displayed.

〔発明の効果〕〔Effect of the invention〕

以上のように本発明によれば、白黒表示用の表示素子で
作った画像を、種々の色に変化できる色光源と組合わせ
てカラー画像を作るので、分解能がよく、コントラスト
や輝度が高（、駆動方法が簡単なカラー表示装置が得ら
れる。As described above, according to the present invention, a color image is created by combining an image created by a display element for black and white display with a color light source that can change to various colors, so that a color image is created with good resolution, contrast, and brightness. , a color display device with a simple driving method can be obtained.

【図面の簡単な説明】[Brief explanation of the drawing]

才１図は本発明によるカラー表示装置の一実施例を示す
ブロック図、才２図は才１図で示した色光源の構成例を
示す斜視図である。 ｔｉｕ−−表示画向、Ｑ３＊＠３水素子部、（１３１−
−色光源、Ｑ４１−・画像駆動回路、ａ９・・色選択回
路。 昭和５８年ｌＯ月２１日 発明者　河　元　正　博 特許出願人　東京芝浦電気株式会社Figure 1 is a block diagram showing an embodiment of a color display device according to the present invention, and Figure 2 is a perspective view showing an example of the configuration of the color light source shown in Figure 1. tiu--Display direction, Q3*@3 hydrogen part, (131-
-Color light source, Q41-.Image drive circuit, a9..Color selection circuit. October 21, 1981 Inventor: Masahiro Kawamoto Patent applicant: Tokyo Shibaura Electric Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] （１）表示画面全域に分布されそれぞれ光の透過率を任
意に変化し得る複数の表示素子と、これら表示素子の背
面から表示画面全域をほぼ均一に光照射するものであっ
て少なくとも２色の発光が可能である色光源と、助記各
表示素子の光透過率をそれぞれ個別に変化させ得る画像
駆動回路と、この画像駆動回路による各表示素子の駆動
に同期して齢配色元源の発光色を選択する色選択回路と
を備えたことを特徴とするカラー表示装置。(1) A plurality of display elements that are distributed over the entire display screen and whose light transmittance can be arbitrarily changed, and a device that irradiates the entire display screen with light almost uniformly from the back of these display elements, and that has at least two colors. A color light source that can emit light, an image drive circuit that can individually change the light transmittance of each display element, and an image drive circuit that can emit light from the color source in synchronization with the drive of each display element by the image drive circuit. A color display device comprising a color selection circuit for selecting a color.
JP19730183A 1983-10-21 1983-10-21 Color display device Pending JPS6089042A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19730183A JPS6089042A (en) 1983-10-21 1983-10-21 Color display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19730183A JPS6089042A (en) 1983-10-21 1983-10-21 Color display device

Publications (1)

Publication Number Publication Date
JPS6089042A true JPS6089042A (en) 1985-05-18

Family

ID=16372181

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19730183A Pending JPS6089042A (en) 1983-10-21 1983-10-21 Color display device

Country Status (1)

Country Link
JP (1) JPS6089042A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578705A1 (en) * 1985-03-05 1986-09-12 Lohja Ab Oy METHOD OF FORMING ELECTRONICALLY CONTROLLED COLOR ELEMENTS AND COLOR DISPLAY BASED ON THIS METHOD
EP0261896A2 (en) * 1986-09-20 1988-03-30 THORN EMI plc Display device
JPS63168627A (en) * 1986-12-23 1988-07-12 インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン Color display device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578705A1 (en) * 1985-03-05 1986-09-12 Lohja Ab Oy METHOD OF FORMING ELECTRONICALLY CONTROLLED COLOR ELEMENTS AND COLOR DISPLAY BASED ON THIS METHOD
EP0261896A2 (en) * 1986-09-20 1988-03-30 THORN EMI plc Display device
US5122791A (en) * 1986-09-20 1992-06-16 Thorn Emi Plc Display device incorporating brightness control and a method of operating such a display
JPS63168627A (en) * 1986-12-23 1988-07-12 インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン Color display device

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