DE2221863C2 - Elektronische Schaltungsanordnung zur Ansteuerung einer Flüssigkristall-Anzeigeeinrichtung für eine Uhr - Google Patents

Elektronische Schaltungsanordnung zur Ansteuerung einer Flüssigkristall-Anzeigeeinrichtung für eine Uhr

Info

Publication number
DE2221863C2
DE2221863C2 DE19722221863 DE2221863A DE2221863C2 DE 2221863 C2 DE2221863 C2 DE 2221863C2 DE 19722221863 DE19722221863 DE 19722221863 DE 2221863 A DE2221863 A DE 2221863A DE 2221863 C2 DE2221863 C2 DE 2221863C2
Authority
DE
Germany
Prior art keywords
liquid crystal
clock
display device
counter
voltage
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.)
Expired
Application number
DE19722221863
Other languages
German (de)
English (en)
Other versions
DE2221863A1 (de
Inventor
Martin Bartholomew St.Ives Huntingdonshire Tobias
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.)
Cambridge Consultants Ltd
Original Assignee
Cambridge Consultants Ltd
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 Cambridge Consultants Ltd filed Critical Cambridge Consultants Ltd
Publication of DE2221863A1 publication Critical patent/DE2221863A1/de
Application granted granted Critical
Publication of DE2221863C2 publication Critical patent/DE2221863C2/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
    • G09G3/16—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source
    • G09G3/18—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source using liquid crystals
    • 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
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/08—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques
    • G04G9/12—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques using light valves, e.g. liquid crystals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H03K17/66—Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will
    • H03K17/665—Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will connected to one load terminal only
    • H03K17/666—Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will connected to one load terminal only the output circuit comprising more than one controlled bipolar transistor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Electric Clocks (AREA)
  • Electronic Switches (AREA)
  • Liquid Crystal Display Device Control (AREA)
DE19722221863 1971-05-07 1972-05-04 Elektronische Schaltungsanordnung zur Ansteuerung einer Flüssigkristall-Anzeigeeinrichtung für eine Uhr Expired DE2221863C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1369271A GB1398237A (en) 1971-05-07 1971-05-07 Liquid crystal display means

Publications (2)

Publication Number Publication Date
DE2221863A1 DE2221863A1 (de) 1972-11-30
DE2221863C2 true DE2221863C2 (de) 1984-05-10

Family

ID=10027663

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19722221863 Expired DE2221863C2 (de) 1971-05-07 1972-05-04 Elektronische Schaltungsanordnung zur Ansteuerung einer Flüssigkristall-Anzeigeeinrichtung für eine Uhr

Country Status (7)

Country Link
JP (1) JPS567983U (enrdf_load_stackoverflow)
BE (1) BE783078A (enrdf_load_stackoverflow)
CH (2) CH582383B5 (enrdf_load_stackoverflow)
DE (1) DE2221863C2 (enrdf_load_stackoverflow)
FR (1) FR2139351A5 (enrdf_load_stackoverflow)
GB (1) GB1398237A (enrdf_load_stackoverflow)
NL (1) NL7206022A (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH589307A5 (enrdf_load_stackoverflow) * 1975-06-27 1977-06-30 Bbc Brown Boveri & Cie
GB2040625A (en) * 1979-01-23 1980-08-28 Nat Res Dev Serial data logic circuit
JPS5677891A (en) * 1979-11-29 1981-06-26 Tokyo Shibaura Electric Co Displayyunit drive circuit
GB2102230A (en) * 1981-07-16 1983-01-26 Plessey Co Ltd A pulse drive circuit
KR970000100B1 (ko) * 1993-12-02 1997-01-04 엘지전자 주식회사 냉장고의 야채실도어 개폐장치
CN114488592A (zh) * 2020-11-11 2022-05-13 昆山科技大学 液晶玻璃板调变电路

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2821639A (en) * 1954-10-28 1958-01-28 Westinghouse Electric Corp Transistor switching circuits
DE1098034B (de) * 1959-04-13 1961-01-26 Siemens Ag Schaltungsanordnung zum Umschalten der Stromrichtung in einem Verbraucher
US3551689A (en) * 1969-03-21 1970-12-29 Rca Corp Alternating current driven load circuit
US3576364A (en) * 1969-05-20 1971-04-27 Rca Corp Color advertising display employing liquid crystal

Also Published As

Publication number Publication date
NL7206022A (enrdf_load_stackoverflow) 1972-11-09
CH582383B5 (enrdf_load_stackoverflow) 1976-11-30
GB1398237A (en) 1975-06-18
CH665472A4 (enrdf_load_stackoverflow) 1974-02-28
JPS567983U (enrdf_load_stackoverflow) 1981-01-23
FR2139351A5 (enrdf_load_stackoverflow) 1973-01-05
DE2221863A1 (de) 1972-11-30
BE783078A (fr) 1972-09-01

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Legal Events

Date Code Title Description
OD Request for examination
8125 Change of the main classification
8126 Change of the secondary classification

Free format text: G09G 3/18 G04G 9/06

8125 Change of the main classification

Ipc: G09G 3/18

8181 Inventor (new situation)

Free format text: TOBIAS, MARTIN BARTHOLOMEW, ST.IVES, HUNTINGDONSHIRE, GB

D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee