CH613091B - LIQUID CRYSTAL DISPLAY DEVICE ON SMALL CLOCKS. - Google Patents

LIQUID CRYSTAL DISPLAY DEVICE ON SMALL CLOCKS.

Info

Publication number
CH613091B
CH613091B CH959075A CH959075A CH613091B CH 613091 B CH613091 B CH 613091B CH 959075 A CH959075 A CH 959075A CH 959075 A CH959075 A CH 959075A CH 613091 B CH613091 B CH 613091B
Authority
CH
Switzerland
Prior art keywords
backing plate
cell
light
liquid
liquid crystal
Prior art date
Application number
CH959075A
Other languages
German (de)
Other versions
CH613091GA3 (en
Inventor
Wolfgang Ganter
Albert Ginter
Original Assignee
Junghans Gmbh Geb
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 of CH613091B publication Critical patent/CH613091B/en
Application filed by Junghans Gmbh Geb filed Critical Junghans Gmbh Geb
Publication of CH613091GA3 publication Critical patent/CH613091GA3/en

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0023—Visual time or date indication means by light valves in general
    • G04G9/0029—Details
    • G04G9/0035—Details constructional
    • G04G9/0041—Illumination devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Liquid Crystal (AREA)
  • Indicating Measured Values (AREA)

Abstract

The liquid-crystal cell (12), which is constructed in the display region as a transmitted-light cell, is adapted in a depression (13) to a backing plate (11) inserted in the time piece housing (10). In the region of its surface opposite the liquid-crystal cell, the backing plate has reflection surfaces (15, 18, 19), which deflect light falling on the backing plate onto the cell. A portion (18, 19) of these reflection surfaces is configured as a recess (17) which is formed in the underside (16) of the backing plate and has light-deflecting surfaces, which are arranged in the form of prisms and deflect the incoming light in the direction of the liquid-crystal cell (12) and are coated with a luminous material (20). In order to achieve a clear colour contrast between the display region of the cell and the surroundings when reading off in daylight, the underside of the backing plate is provided with a dye layer (22) of any hue. <IMAGE>
CH959075A 1974-08-01 1975-07-22 Liquid-crystal display device on small time pieces CH613091GA3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE7426201U DE7426201U (en) 1974-08-01 1974-08-01 Liquid crystal display devices, in particular for small watches

Publications (2)

Publication Number Publication Date
CH613091B true CH613091B (en)
CH613091GA3 CH613091GA3 (en) 1979-09-14

Family

ID=6646034

Family Applications (1)

Application Number Title Priority Date Filing Date
CH959075A CH613091GA3 (en) 1974-08-01 1975-07-22 Liquid-crystal display device on small time pieces

Country Status (2)

Country Link
CH (1) CH613091GA3 (en)
DE (1) DE7426201U (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2616669C2 (en) * 1976-04-15 1986-10-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Radiation collector and compressor in the form of a fluorescent plastic plate and display device herewith
DE2554226C3 (en) * 1975-12-03 1985-07-11 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V., 8000 Muenchen Radiation collector and compressor in the form of a fluorescent plastic plate
DE2640909C2 (en) * 1976-09-10 1987-05-07 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Display device with a radiation collector and condenser
AT351615B (en) * 1975-12-03 1979-08-10 Siemens Ag ARRANGEMENT FOR PASSIVE BRIGHTNESS GAIN OF ONE- OR MULTICOLOR DISPLAY DEVICES
DE2660996C2 (en) * 1976-04-15 1986-08-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Display device with a radiation collector and condenser
DE2619352C2 (en) * 1976-04-30 1981-12-03 Siemens AG, 1000 Berlin und 8000 München Liquid crystal display device comprising a plate made of fluorescent material
IT1076017B (en) * 1977-02-01 1985-04-22 Nuovo Pignone Spa IMPROVEMENTS IN A SEVEN SEGMENT ELECTROMECHANICAL NUMERIC INDICATOR
DE2706405C3 (en) * 1977-02-15 1985-08-01 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V., 8000 Muenchen Display arrangement for displaying light images against a dark background
DE2706375C3 (en) * 1977-02-15 1982-08-26 Siemens AG, 1000 Berlin und 8000 München Display arrangement with a light valve device, in particular a liquid crystal cell
DE2808268C2 (en) * 1978-02-27 1980-04-24 Siemens Ag, 1000 Berlin Und 8000 Muenchen Display device with a plate-shaped light valve and a fluorescent plate

Also Published As

Publication number Publication date
CH613091GA3 (en) 1979-09-14
DE7426201U (en) 1974-11-14

Similar Documents

Publication Publication Date Title
FR2199142B1 (en)
DE69018157D1 (en) Thin film transistor liquid crystal display device with optical interference color filters.
SE7612671L (en) INSERTED WINDOW BOX
CH609521B (en) PASSIVE ELECTRO-OPTICAL DISPLAY DEVICE.
MY110915A (en) Liquid crystal display device
CH613091B (en) LIQUID CRYSTAL DISPLAY DEVICE ON SMALL CLOCKS.
US2566458A (en) Illuminated sign
CH633410B (en) ELECTROCHROME DISPLAY DEVICE.
JPS55160895A (en) Tn type liquid crystal display device
JPS57610A (en) Liquid crystal display device
EP0446351A4 (en) Transmission-type liquid crystal display device.
JPS5216224A (en) Photographic light sensitive material
FR2319173A1 (en) Auxiliary lighting system for liq. crystal display - e.g. in electronic watches, has edge illuminated diffusion plate with reflective coated back
JPS524797A (en) Liquid crystal displayer
FR2363175A1 (en) OPTICAL DISPLAY DEVICE
JPS5356000A (en) Reflective type liquid crystal display unit
JPH0428143Y2 (en)
GB2013954A (en) Liquid crystal display device
JPS544156A (en) Liquid crystal display device
JPS5287048A (en) Liquid crystal dispaly element
JPS591245Y2 (en) light guiding diffuser
JPS54105562A (en) Reflecting plate for liquid crystal panel
JPS54144898A (en) Liquid crystal display unit
NL7514148A (en) HIGHLY CONTRAST LIQUID CRYSTAL DISPLAY DEVICE WITH LONG LIFE.
JPS5563925A (en) Instrument panel illuminator