DE2221441A1 - OPTOELECTRONIC SIGN GENERATOR - Google Patents

OPTOELECTRONIC SIGN GENERATOR

Info

Publication number
DE2221441A1
DE2221441A1 DE19722221441 DE2221441A DE2221441A1 DE 2221441 A1 DE2221441 A1 DE 2221441A1 DE 19722221441 DE19722221441 DE 19722221441 DE 2221441 A DE2221441 A DE 2221441A DE 2221441 A1 DE2221441 A1 DE 2221441A1
Authority
DE
Germany
Prior art keywords
optoelectronic
fluorescent
layer
sign generator
electrodes
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
DE19722221441
Other languages
German (de)
Inventor
Bernt Von Grabe
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 DE19722221441 priority Critical patent/DE2221441A1/en
Publication of DE2221441A1 publication Critical patent/DE2221441A1/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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light

Description

Optoelektronischer Zeichengenerator Die Erfindung betrifft einen optoelektronischen Zeichen-@ generator, bestehend aus wenigstens zwei Elektroden auf wenigstens einem Träger und einem zwischen den Elektroden angeordneten fltesigen Kristall und ist dadurch gekennzeichnet, dass hinter dem Träger eine wenigstens teilweise reflektierende, fluoreszierende Schicht angeordnet ist. Optoelectronic Character Generator The invention relates to a optoelectronic character @ generator, consisting of at least two electrodes on at least one support and a fltesigen arranged between the electrodes Crystal and is characterized in that behind the carrier at least one partially reflective, fluorescent layer is arranged.

Flässige Kristalle sind bekannt und in der Literatur beschrieben, beispielsweise in "Electro-Technology", Januar 1970, Seiten 41 ff; "Electronic Design, 19, September 13, 1971, Vol. 18, Seiten 76 ff.Liquid crystals are known and described in the literature, for example in "Electro-Technology", January 1970, pages 41 ff; "Electronic Design, 19, September 13, 1971, Vol. 18, pages 76 ff.

Zeichengeneratoren, die einen fltasigen Kristall anwenden-sind beschrieben in "Applied Physics Letters" Vol. 19, Nummer 7, 1. Oktober 1971, ferner in "Applied Optics", Vol. 9, Nummer 6, Juni 1970, Seiten 1323 ff., und in "IEEE Transactions on electronic devices", Vol. ED 18, Nummer 9, September 1971.Character generators using a liquid crystal are described in "Applied Physics Letters" Vol. 19, Number 7, October 1, 1971, also in "Applied Optics ", Vol. 9, Number 6, June 1970, pages 1323 ff., And in" IEEE Transactions on electronic devices ", Vol. ED 18, number 9, September 1971.

Zeichengeneratoren, die einen fldssigen Kristall verwendens haben den Nachteil, dass sie in Dunkelheit nicht ablesbar sind, weil sie ihrer Natur nach nicht Licht erzeugen sondern solches reflektieren Während einerseits diese Tatsache von Vorteil ist, vorzugsweise deswegen, weil ein nur geringer Stromverbrauch auftritt, ist die mangelnde Ablesbarkeit in Dunkelheit ein schwerwiegender Nachteil.Character generators that use a liquid crystal the disadvantage that they cannot be read in the dark because they are by their nature not producing light but reflecting it While on the one hand this fact is advantageous, preferably because there is only a low power consumption, the lack of readability in the dark is a serious disadvantage.

Die Erfindung stellt sich die Aufgabe diesen Nachteil zu beheben.The object of the invention is to remedy this disadvantage.

Erfindungsgemäss geschieht das dadurch, dass hinter der transparenten Trägerplatte eine fluoreszierende, wenigstens teilweise reflektierende Schicht angeordnet wird. Nach der Erfindung kommt es nicht darauf an, ob es sich um eine fluoreszierende, luminiszente oder phosphoreszierende Schicht handelt, vielmehr sollen alle solche Schichten in den Rahmen der Erfindung fallen, die in irgendeiner Form Strahlung einer im sichtbaren Bereich liegenden Wellenlänge aussenden. Nach der Erfindung ist es auch gleichgültig, ob die Schicht eine Festkörperschicht oder eine Fltæsigkeit ist und ob die sichtbare Strahlung in der Schicht erzeugt wird oder die Schicht Strahlung einer anderen Wellenlänge in Strahlung einer sichtbaren Wellenlänge umwandelt.According to the invention, this is done by the fact that behind the transparent Carrier plate arranged a fluorescent, at least partially reflective layer will. According to the invention, it does not matter whether it is a fluorescent, luminescent or phosphorescent layer, rather all such Layers fall within the scope of the invention that are in any form radiation emit a wavelength lying in the visible range. According to the invention it is also irrelevant whether the layer is a solid layer or a liquid and whether the visible radiation is generated in the layer or the layer Converts radiation of a different wavelength into radiation of a visible wavelength.

In einer Abwandlung der Erfindung ist der Träger ait dem fltssigen i-) Kristall zwischen zwei gekreuzt angeordneten Polarisatoren angeordnet und die fluoreszierende Schicht befindet sich hinter dem zweiten Polarisationsfilter. In diesem Fslle ist der Kontrast besonders gross. Geeignet für eine solche Anordnung ist jedes handelsübliche fluoreszierende oder phosphoreszierende oder dergleichen Material, auch elektroluminiszierende Materialien sind geeignet.In a modification of the invention, the carrier is a liquid i-) crystal arranged between two crossed polarizers and the fluorescent layer is behind the second polarization filter. In In this case the contrast is particularly great. Suitable for such an arrangement is any commercially available fluorescent or phosphorescent or the like Material, including electroluminescent materials, are suitable.

* Ab6. I* From 6. I.

Claims (2)

Patentansprüche 1) Optoelektronischer Zeichengenerator, bestehend aus wenigstens zwei Elektroden auf wenigstens einem Träger und einem zwischen den Elektroden angeordneten flüssigen Kristall, d a d u r c h g e k e n n z e i c h n e t , d a s s hinter dem TrAger eine reflektierende und fluoreszierende, luminiszente.oder phosphors zierende Schicht angeordnet ist.Claims 1) Optoelectronic character generator, consisting of at least two electrodes on at least one support and one between the Liquid crystal arranged on electrodes, d u r c h e k e n n n z e i c h n e t that behind the carrier a reflective and fluorescent, luminescent. or phosphor decorative layer is arranged. 2) Cptoelektronischer Zeichengenerator nach Anspruch 1, d a d u r c h g e k e n n z e 1 c h n e t , d a 5 5 die reflektierende und fluoreszierende, luminiszente oder Phosphoreszierende Schicht auf einem Spiegel oder einer spiegelähnlichen Fläche mit wenigstens matter Verspiegelung aufgebracht ist.2) Cptoelectronic character generator according to claim 1, d a d u r c h g e k e n n z e 1 c h n e t, d a 5 5 the reflective and fluorescent, luminescent or phosphorescent layer on a mirror or a mirror-like one Surface is applied with at least a matt mirror coating. L e e r s e i t eL e r s e i t e
DE19722221441 1972-05-02 1972-05-02 OPTOELECTRONIC SIGN GENERATOR Pending DE2221441A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19722221441 DE2221441A1 (en) 1972-05-02 1972-05-02 OPTOELECTRONIC SIGN GENERATOR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722221441 DE2221441A1 (en) 1972-05-02 1972-05-02 OPTOELECTRONIC SIGN GENERATOR

Publications (1)

Publication Number Publication Date
DE2221441A1 true DE2221441A1 (en) 1973-11-15

Family

ID=5843840

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19722221441 Pending DE2221441A1 (en) 1972-05-02 1972-05-02 OPTOELECTRONIC SIGN GENERATOR

Country Status (1)

Country Link
DE (1) DE2221441A1 (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2355134A1 (en) * 1973-11-05 1975-05-07 Vdo Schindling DISPLAY DEVICE
FR2280945A1 (en) * 1974-07-30 1976-02-27 Siemens Ag LIQUID CRYSTAL DISPLAY SCREEN
DE2554226A1 (en) * 1975-12-03 1977-06-08 Fraunhofer Ges Forschung Display unit with passive brightness attenuation - using mirrored fluorescent plastics plate behind fluidic crystal cell and using linearly polarised plates
FR2334163A1 (en) * 1975-12-03 1977-07-01 Siemens Ag MONOCHROME OR POLYCHROME DISPLAY DEVICE INCLUDING AN ELECTRO-OPTICAL LIGHT VALVE
DE2616669A1 (en) * 1976-04-15 1977-10-20 Siemens Ag Luminescent display with electrooptical elements - uses luminescent front and rear elements with mirror at edges (SW 27.6.77)
DE2640909A1 (en) * 1976-09-10 1978-03-23 Siemens Ag Passive light amplification in electro-optic display - uses filter plate located behind fluorescent plate for ambient light amplification (SW 27.6.77)
DE2706375A1 (en) * 1977-02-15 1978-08-17 Siemens Ag ARRANGEMENT WITH A LIGHT VALVE
DE2706405A1 (en) * 1977-02-15 1978-08-17 Siemens Ag ARRANGEMENT FOR THE REPRESENTATION OF LIGHT IMAGES IN FRONT OF A DARK BACKGROUND
DE2835347A1 (en) * 1978-08-11 1980-02-28 Fraunhofer Ges Forschung DISPLAY DEVICE WITH AN ELECTROOPTIC LIGHT VALVE
DE3022543A1 (en) * 1979-06-18 1981-01-22 Gen Motors Corp LIQUID CRYSTAL DISPLAY
EP0023279A1 (en) * 1979-07-25 1981-02-04 Siemens Aktiengesellschaft Phosphorescent passive display devices
FR2573232A1 (en) * 1984-11-13 1986-05-16 Aerospatiale Display device illuminated by ultra-violet light
DE2660996C2 (en) * 1976-04-15 1986-08-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Display device with a radiation collector and condenser
EP0240345A2 (en) * 1986-04-04 1987-10-07 Sherwood Medical Company Light modulating display member
DE3738414A1 (en) * 1987-11-12 1989-05-24 Bosch Gmbh Robert Device for illuminating passive information displays, preferably LCDs
DE4131993A1 (en) * 1991-09-26 1993-04-01 Licentia Gmbh LIQUID CRYSTAL DISPLAY DEVICE
DE4440410A1 (en) * 1993-11-11 1995-05-18 Yazaki Corp Light emitting component of organic-inorganic hybrid type

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2355134A1 (en) * 1973-11-05 1975-05-07 Vdo Schindling DISPLAY DEVICE
FR2280945A1 (en) * 1974-07-30 1976-02-27 Siemens Ag LIQUID CRYSTAL DISPLAY SCREEN
DE2554226A1 (en) * 1975-12-03 1977-06-08 Fraunhofer Ges Forschung Display unit with passive brightness attenuation - using mirrored fluorescent plastics plate behind fluidic crystal cell and using linearly polarised plates
FR2334163A1 (en) * 1975-12-03 1977-07-01 Siemens Ag MONOCHROME OR POLYCHROME DISPLAY DEVICE INCLUDING AN ELECTRO-OPTICAL LIGHT VALVE
DE2660996C2 (en) * 1976-04-15 1986-08-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Display device with a radiation collector and condenser
DE2616669A1 (en) * 1976-04-15 1977-10-20 Siemens Ag Luminescent display with electrooptical elements - uses luminescent front and rear elements with mirror at edges (SW 27.6.77)
DE2640909A1 (en) * 1976-09-10 1978-03-23 Siemens Ag Passive light amplification in electro-optic display - uses filter plate located behind fluorescent plate for ambient light amplification (SW 27.6.77)
DE2706375A1 (en) * 1977-02-15 1978-08-17 Siemens Ag ARRANGEMENT WITH A LIGHT VALVE
DE2706405A1 (en) * 1977-02-15 1978-08-17 Siemens Ag ARRANGEMENT FOR THE REPRESENTATION OF LIGHT IMAGES IN FRONT OF A DARK BACKGROUND
DE2835347A1 (en) * 1978-08-11 1980-02-28 Fraunhofer Ges Forschung DISPLAY DEVICE WITH AN ELECTROOPTIC LIGHT VALVE
DE3022543A1 (en) * 1979-06-18 1981-01-22 Gen Motors Corp LIQUID CRYSTAL DISPLAY
EP0023279A1 (en) * 1979-07-25 1981-02-04 Siemens Aktiengesellschaft Phosphorescent passive display devices
FR2573232A1 (en) * 1984-11-13 1986-05-16 Aerospatiale Display device illuminated by ultra-violet light
EP0240345A2 (en) * 1986-04-04 1987-10-07 Sherwood Medical Company Light modulating display member
EP0240345A3 (en) * 1986-04-04 1989-06-21 Sherwood Medical Company Light modulating display member
DE3738414A1 (en) * 1987-11-12 1989-05-24 Bosch Gmbh Robert Device for illuminating passive information displays, preferably LCDs
DE4131993A1 (en) * 1991-09-26 1993-04-01 Licentia Gmbh LIQUID CRYSTAL DISPLAY DEVICE
DE4440410A1 (en) * 1993-11-11 1995-05-18 Yazaki Corp Light emitting component of organic-inorganic hybrid type

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