IT1092684B - Dispositivo per rappresentare immagini chiare su sfondo scuro - Google Patents

Dispositivo per rappresentare immagini chiare su sfondo scuro

Info

Publication number
IT1092684B
IT1092684B IT20209/78A IT2020978A IT1092684B IT 1092684 B IT1092684 B IT 1092684B IT 20209/78 A IT20209/78 A IT 20209/78A IT 2020978 A IT2020978 A IT 2020978A IT 1092684 B IT1092684 B IT 1092684B
Authority
IT
Italy
Prior art keywords
light images
dark background
representing light
representing
dark
Prior art date
Application number
IT20209/78A
Other languages
English (en)
Other versions
IT7820209A0 (it
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of IT7820209A0 publication Critical patent/IT7820209A0/it
Application granted granted Critical
Publication of IT1092684B publication Critical patent/IT1092684B/it

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
    • G02F1/133617—Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K2/00—Non-electric light sources using luminescence; Light sources using electrochemiluminescence
    • 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
    • G02F1/13725—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 guest-host interaction

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electric Clocks (AREA)
IT20209/78A 1977-02-15 1978-02-13 Dispositivo per rappresentare immagini chiare su sfondo scuro IT1092684B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2706372A DE2706372B2 (de) 1977-02-15 1977-02-15 Anzeigeanordnung zur Darstellung von hellen Bildern auf dunklem Hintergrund

Publications (2)

Publication Number Publication Date
IT7820209A0 IT7820209A0 (it) 1978-02-13
IT1092684B true IT1092684B (it) 1985-07-12

Family

ID=6001248

Family Applications (1)

Application Number Title Priority Date Filing Date
IT20209/78A IT1092684B (it) 1977-02-15 1978-02-13 Dispositivo per rappresentare immagini chiare su sfondo scuro

Country Status (11)

Country Link
US (1) US4244636A (it)
JP (1) JPS53101997A (it)
AT (1) AT368295B (it)
BE (1) BE863988A (it)
CA (1) CA1106479A (it)
DE (1) DE2706372B2 (it)
FR (1) FR2380566A1 (it)
GB (1) GB1585754A (it)
IT (1) IT1092684B (it)
NL (1) NL7801665A (it)
SE (1) SE7801773L (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2706405C3 (de) * 1977-02-15 1985-08-01 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V., 8000 Muenchen Anzeigeanordnung zur Darstellung von hellen Bildern vor dunklem Hintergrund
JPS54141150A (en) * 1978-04-26 1979-11-02 Toshiba Corp Liquid crystal display device
JPS5895327A (ja) * 1981-12-01 1983-06-06 Alps Electric Co Ltd カラ−液晶表示素子
US4636807A (en) * 1986-03-14 1987-01-13 The Mead Corporation Apparatus and method for light value gray scale recording
GB8717362D0 (en) * 1987-07-22 1987-08-26 Gen Electric Co Plc Liquid crystal displays

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5140289B1 (it) * 1971-01-23 1976-11-02
US3841083A (en) * 1971-03-01 1974-10-15 Time Computer Self-illuminated liquid crystal timepiece
US4104627A (en) * 1974-05-03 1978-08-01 Merz & Bentili Nuklear Ag Digitale, an indicating device containing liquid crystals
CH589307A5 (it) * 1975-06-27 1977-06-30 Bbc Brown Boveri & Cie
AT351615B (de) * 1975-12-03 1979-08-10 Siemens Ag Anordnung zur passiven helligkeitsverstaerkung von ein- oder mehrfarbigen anzeigevor- richtungen
DE2619352C2 (de) * 1976-04-30 1981-12-03 Siemens AG, 1000 Berlin und 8000 München Flüssigkristall-Anzeigevorrichtung mit einer Platte aus fluoreszierendem Material
US4126384A (en) * 1976-08-13 1978-11-21 Rca Corporation Self-illuminated liquid crystal display device

Also Published As

Publication number Publication date
NL7801665A (nl) 1978-08-17
AT368295B (de) 1982-09-27
IT7820209A0 (it) 1978-02-13
GB1585754A (en) 1981-03-11
US4244636A (en) 1981-01-13
FR2380566A1 (fr) 1978-09-08
JPS53101997A (en) 1978-09-05
DE2706372B2 (de) 1978-11-30
CA1106479A (en) 1981-08-04
BE863988A (fr) 1978-05-29
FR2380566B1 (it) 1982-08-20
DE2706372A1 (de) 1978-08-17
SE7801773L (sv) 1978-08-15
ATA100578A (de) 1982-01-15

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