DE19906608A1 - Colour LCD image generator with sequentially generated basic colours with rapid interchange for reproduction of moving or still images - Google Patents

Colour LCD image generator with sequentially generated basic colours with rapid interchange for reproduction of moving or still images

Info

Publication number
DE19906608A1
DE19906608A1 DE19906608A DE19906608A DE19906608A1 DE 19906608 A1 DE19906608 A1 DE 19906608A1 DE 19906608 A DE19906608 A DE 19906608A DE 19906608 A DE19906608 A DE 19906608A DE 19906608 A1 DE19906608 A1 DE 19906608A1
Authority
DE
Germany
Prior art keywords
color
colour
lcd
image generator
reproduction
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.)
Ceased
Application number
DE19906608A
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19906608A priority Critical patent/DE19906608A1/en
Publication of DE19906608A1 publication Critical patent/DE19906608A1/en
Ceased legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133621Illuminating devices providing coloured light
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133621Illuminating devices providing coloured light
    • G02F1/133622Colour sequential illumination

Abstract

The generator uses a black-white LCD and forms a coloured impression by rapid change of the colour of the background illumination of more than 75 per sec. The LCD indicates the corresp. image content synchronously with basic colour. If a black-white LCD projector is used, a rotary colour disc in the beam path forms the colour impression. The colour disc contains the three basic colours and moves synchronously with the change of corresp. image contents.

Description

Es ist bekannt, farbige Bilder mit Hilfe von Flüssig­ kristallen zu erzeugen, indem für jede Grundfarbe ein Teilbild generiert wird. Diese simultan erzeugten Bilder werden übereinandergelagert, so daß der Eindruck des farbigen Gesamtbildes entsteht. Bei Bildschirmen wird dies z. B. durch Nebeneinanderordnung verschiedenfarbiger Bildpixel erreicht; LCD-Projektoren erzeugen drei mono­ chromatische Teilbilder in den drei additiven Grundfar­ ben und bringen diese zur Überlagerung.It is known to color images with the help of liquid generate crystals by adding one for each primary color Drawing file is generated. These simultaneously generated images are superimposed so that the impression of colored overall picture arises. With screens this z. B. by juxtaposition of different colors Image pixels reached; LCD projectors produce three mono chromatic drawing files in the three additive basic colors ben and bring these to superimpose.

Der im Patentanspruch angegebenen Erfindung liegt das Problem zugrunde, den Bauaufwand von LCD-Bildschirmen und -Projektoren zu verringern bzw. die Bildauflösung von LCD-Farbbildschirmen zu erhöhen.The invention specified in the claim is Problem based on the construction work of LCD screens and projectors to reduce or the image resolution of LCD color screens to increase.

Dieses Problem wird durch die im Patentanspruch 1 aufge­ führten Merkmale für LCD-Bildschirme gelöst indem farbige Bilder unter Verwendung eines Schwarz-Weiß LCD-Bildschir­ mes erzeugt werden, wenn als Hintergrundbeleuchtung träg­ heitslos arbeitende Leuchtmittel in den drei additiven Grundfarben zur Anwendung kommen. Dabei wechselt die Bildschirmbeleuchtung bei bewegten Bildern mindestens dreimal pro Einzelbild, also ≧ 75/sek zwischen den drei Grundfarben wobei dem S/W-Bildschirm das dem der jeweils aktiven Farbe entsprechende Helligkeitsmuster zugeordnet wird. Aufgrund der Trägheit des menschlichen Auges werden die drei Teilbilder nach dem Prinzip des Farbkreisels zum farbigen Gesamtbild zusammengesetzt. This problem is solved by the in claim 1 led features for LCD screens solved by colored Images using a black and white LCD screen mes generated when backlit as sluggish bulbs working without safety in the three additive Primary colors are used. The changes At least screen lighting for moving images three times per frame, i.e. ≧ 75 / sec between the three Basic colors with the B / W screen that of each corresponding brightness pattern assigned to active color becomes. Because of the sluggishness of the human eye the three partial images according to the principle of the color top colored overall picture.  

Die mit der Erfindung erzielten Vorteile bestehen darin, daß nur noch eine Bildpunktmatrix statt Dreier benötigt wird, um ein farbiges Bild zu erzeugen. Sind die Bild­ punkte einer konventionellen Lösung nebeneinander ange­ ordnet, ergibt sich demgegenüber zusätzlich der Vorteil einer dreifach höheren Bildauflösung da konventionell drei Farbpixel benötigt werden, um einen farbigen Bild­ punkt darzustellen.The advantages achieved by the invention are that only one pixel matrix is needed instead of three to create a colored image. Are the picture points of a conventional solution side by side orders, there is also the additional advantage a three times higher image resolution since conventional Three color pixels are needed to make a colored picture point.

Eine Ausgestaltungsmöglichkeit für LCD-Projektoren ist im Patentanspruch 2 angegeben. Hier wird der Farbwechsel da­ durch erreicht, daß eine Farbscheibe im Strahlengang eines S/W-LCD Projektors synchron mit den Bildinformationen für die entsprechenden Farben rotiert. Bei dieser Lösung wird nur eine Schwarz-Weiß Projektionsröhre benötigt.A design option for LCD projectors is in Claim 2 specified. Here the color change is there achieved by a color disc in the beam path of a B / W LCD projector in sync with the image information for the corresponding colors rotated. With this solution only a black and white projection tube is required.

Je ein Ausführungsbeispiel der Erfindung ist in den Zeich­ nungen dargestellt und wird im Folgenden näher beschrieben.One embodiment of the invention is shown in the drawing shown and is described in more detail below.

Es zeigt Fig. 1 die Ausführung der Erfindung mittels Leucht­ dioden in den Farben Rot, Grün und Blau. Da LEDs auch im Pulsbetrieb bis zu einigen MHz betrieben werden können, ist die Helligkeit der einzelnen Farben durch Veränderung der Zeiten der Hell- und Dunkelphasen bei hohen Pulsfreuqenzen veränderbar.It shows Fig. 1, the embodiment of the invention by means of light-emitting diodes of the colors red, green and blue. Since LEDs can also be operated in pulse mode up to a few MHz, the brightness of the individual colors can be changed by changing the times of the light and dark phases at high pulse frequencies.

Die Strahlung der LEDs gelangt in den lichtleitenden Kunst­ stoff. Dieser ist zweckmäßigerweise auf der Rückseite ver­ spiegelt und auf der dem Bildschirm zugewandten Seite auf­ gerauht um eine möglichst gleichmäßige Ausleuchtung des Schirmes zu gewährleisten.The radiation from the LEDs reaches the light-conducting art material. This is conveniently ver on the back reflects and on the side facing the screen roughened for the most uniform possible illumination of the To ensure the umbrella.

In Fig. 1b ist die Aufteilung der Bildinformation in die Farbanteile, ihre Lagerung in Zwischenspeicher und ihre Verknüpfung mit den entsprechenden Leuchteinheiten mittels des Taktgebers schematisch dargestellt.In Fig. 1b the division of the image information into the color components, their storage in the buffer and their linkage to the corresponding lighting units is shown schematically by means of the clock.

Es zeigt Fig. 2 die Ausführung der Erfindung als Projek­ tionsgerät. Hier rotiert eine Farbscheibe zwischen den Kondensorlinsen synchron zu den vom LCD-Schirm gezeigten Bildinhalten. Die Farbscheibe dient dabei gleichzeitig als Wärmefilter zum Schutz des Bildschirmes.It shows Fig. 2, the embodiment of the invention as projek tion device. Here, a colored disc rotates between the condenser lenses in sync with the image content shown on the LCD screen. The color disc also serves as a heat filter to protect the screen.

Die Fig. 2b zeigt die im Strahlengang rotierende Farb­ scheibe und den davor liegenden LCD-Schirm in der Aufsicht. Zwischen den drei für jeweils eine der drei additiven Grundfarben durchlässigen Filtern liegen lichtundurchläs­ sige Bereiche. Die Farbscheibe ist so mit dem Bildschirm synchronisiert, daß die jeweils durch diese Abschattungen abgedeckten Bildpunkte ihre Bildinhalte entsprechend des nachfolgenden Filters ändern. FIG. 2b shows the rotating disk in the optical path and the color LCD screen lying in front in plan view. There are opaque areas between the three filters, which are permeable to one of each of the three additive primary colors. The color disk is synchronized with the screen in such a way that the pixels covered by these shadows change their image contents in accordance with the following filter.

Claims (2)

1. Farbiger LCD-Bildgenerator für die Wiedergabe stehender bzw. bewegter Bilder dadurch gekennzeichnet, daß bei Verwendung eines Schwarz-Weiß Flüssig­ kristall-Displays der Farbeindruck durch schnellen Wechsel der Farbe der Hintergrundbeleuchtung (< 75/sek.) erzeugt wird, wobei das LCD-Display jeweils synchron zur Grundfarbe den entsprechenden Bildinhalt anzeigt.1. Colored LCD image generator for the reproduction of still or moving images, characterized in that when using a black and white liquid crystal display the color impression is generated by rapid change in the color of the backlight (<75 / sec.), The LCD -Display shows the corresponding image content in sync with the basic color. 2. Farbiger LCD-Bildgenerator nach Patentanspruch 1, dadurch gekennzeichnet, daß bei Verwendung eines S/W LCD-Projektors eine rotierende Farbscheibe im Strahlengang den Farb­ eindruck hervorruft. Die Farbscheibe enthält die drei additiven Grundfarben und läuft mit dem Wechsel der ihnen entsprechenden Bildinhalte synchron.2. Colored LCD image generator according to claim 1, characterized, that when using a B / W LCD projector a rotating color disc in the beam path the color creates an impression. The color disc contains the three additive primary colors and runs with the Change of the corresponding picture content synchronous.
DE19906608A 1999-02-17 1999-02-17 Colour LCD image generator with sequentially generated basic colours with rapid interchange for reproduction of moving or still images Ceased DE19906608A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19906608A DE19906608A1 (en) 1999-02-17 1999-02-17 Colour LCD image generator with sequentially generated basic colours with rapid interchange for reproduction of moving or still images

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19906608A DE19906608A1 (en) 1999-02-17 1999-02-17 Colour LCD image generator with sequentially generated basic colours with rapid interchange for reproduction of moving or still images

Publications (1)

Publication Number Publication Date
DE19906608A1 true DE19906608A1 (en) 2000-08-31

Family

ID=7897775

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19906608A Ceased DE19906608A1 (en) 1999-02-17 1999-02-17 Colour LCD image generator with sequentially generated basic colours with rapid interchange for reproduction of moving or still images

Country Status (1)

Country Link
DE (1) DE19906608A1 (en)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63316590A (en) * 1987-06-19 1988-12-23 Hitachi Ltd Projection type display
JPH0336518A (en) * 1989-07-04 1991-02-18 Ise Electronics Corp Color display panel and its driving method
JPH054026Y2 (en) * 1986-11-20 1993-02-01
JPH0580716A (en) * 1991-09-20 1993-04-02 Nippon Telegr & Teleph Corp <Ntt> Color liquid crystal display system
US5359345A (en) * 1992-08-05 1994-10-25 Cree Research, Inc. Shuttered and cycled light emitting diode display and method of producing the same
JPH0736427A (en) * 1993-07-15 1995-02-07 Canon Inc Display device
JPH08211361A (en) * 1995-02-06 1996-08-20 Casio Electron Mfg Co Ltd Transmission type display device
JPH09101497A (en) * 1995-10-04 1997-04-15 Buraito Kenkyusho:Kk Liquid crystal display device
JPH09185010A (en) * 1995-12-28 1997-07-15 Shimadzu Corp Display device
US5668572A (en) * 1995-05-26 1997-09-16 Texas Instruments Incorporated Color temperature compensation for digital display system with color wheel
JPH09265091A (en) * 1996-03-29 1997-10-07 Toyoda Gosei Co Ltd Liquid crystal display device
JPH113053A (en) * 1997-06-11 1999-01-06 Miyota Co Ltd Color liquid crystal display device

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH054026Y2 (en) * 1986-11-20 1993-02-01
JPS63316590A (en) * 1987-06-19 1988-12-23 Hitachi Ltd Projection type display
JPH0336518A (en) * 1989-07-04 1991-02-18 Ise Electronics Corp Color display panel and its driving method
JPH0580716A (en) * 1991-09-20 1993-04-02 Nippon Telegr & Teleph Corp <Ntt> Color liquid crystal display system
US5359345A (en) * 1992-08-05 1994-10-25 Cree Research, Inc. Shuttered and cycled light emitting diode display and method of producing the same
JPH0736427A (en) * 1993-07-15 1995-02-07 Canon Inc Display device
JPH08211361A (en) * 1995-02-06 1996-08-20 Casio Electron Mfg Co Ltd Transmission type display device
US5668572A (en) * 1995-05-26 1997-09-16 Texas Instruments Incorporated Color temperature compensation for digital display system with color wheel
JPH09101497A (en) * 1995-10-04 1997-04-15 Buraito Kenkyusho:Kk Liquid crystal display device
JPH09185010A (en) * 1995-12-28 1997-07-15 Shimadzu Corp Display device
JPH09265091A (en) * 1996-03-29 1997-10-07 Toyoda Gosei Co Ltd Liquid crystal display device
JPH113053A (en) * 1997-06-11 1999-01-06 Miyota Co Ltd Color liquid crystal display device

Similar Documents

Publication Publication Date Title
DE69933917T2 (en) LIGHT SOURCE AND DISPLAY DEVICE
DE60125183T2 (en) PICTURE DISPLAY DEVICE OF THE PROJECTION TYPE
DE19902110C2 (en) Video projection system for the projection of several single images
DE69535346T2 (en) DISPLAY DEVICE
DE102007038881B4 (en) Projector of an information display system in vehicles, in particular in aircraft
DE69835311T2 (en) Color sequential video display device? &amp;#X9;
DE602005002021T2 (en) MOSAIC PROJECTION DISPLAY WITH ROOM LIGHT MODULATORS
DE102014115964A1 (en) lighting device
DE102016111731B3 (en) Lighting device for a light modulator having a projector
CN104575439B (en) Display compensation method, device and display apparatus
DE69738319T2 (en) LCD Projector
US5825337A (en) Color autostereoscopic display
DE60037711T2 (en) Single panel color image projector
DE60008192T2 (en) Method and device for correcting incorrect contours in an image display system
DE19852842C1 (en) Display unit intended for a motor vehicle
DE888562C (en) Device for the reproduction of television pictures
DE19906608A1 (en) Colour LCD image generator with sequentially generated basic colours with rapid interchange for reproduction of moving or still images
DE4242287A1 (en)
KR950702779A (en) Color display device
DE932132C (en) Color transmission of television pictures without additional cost of symbols
JP2805868B2 (en) Projection type liquid crystal display
JPH04352139A (en) Liquid crystal projection type display
JPS60131522A (en) Color liquid-crystal display device
US2156814A (en) Method of projecting motion pictures in natural color
US2174561A (en) Display apparatus and method

Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8122 Nonbinding interest in granting licences declared
8131 Rejection