EP1640943A3 - Method for driving multi-segment liquid crystal display - Google Patents

Method for driving multi-segment liquid crystal display Download PDF

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Publication number
EP1640943A3
EP1640943A3 EP05300771A EP05300771A EP1640943A3 EP 1640943 A3 EP1640943 A3 EP 1640943A3 EP 05300771 A EP05300771 A EP 05300771A EP 05300771 A EP05300771 A EP 05300771A EP 1640943 A3 EP1640943 A3 EP 1640943A3
Authority
EP
European Patent Office
Prior art keywords
liquid crystal
crystal display
segment liquid
segment
driving multi
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.)
Withdrawn
Application number
EP05300771A
Other languages
German (de)
French (fr)
Other versions
EP1640943A2 (en
Inventor
Mickael Beule
Patrick Leveque
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.)
SEB SA
Original Assignee
SEB SA
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 SEB SA filed Critical SEB SA
Publication of EP1640943A2 publication Critical patent/EP1640943A2/en
Publication of EP1640943A3 publication Critical patent/EP1640943A3/en
Withdrawn legal-status Critical Current

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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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

Procédé de commande n-plexée d'un afficheur à cristaux liquides multi-segments, dans lequel chaque groupe (A1, A2) de n segments (A11, A12, A13, A21, A22, A23) est connecté à n pistes communes (BP1, BP2, BP3), et à une électrode de commande (S1, S2, S3, S4) dédiée audit groupe (A1, A2), de manière à appliquer sur chaque segment une tension alternative fonction des signaux présents sur les pistes communes et les électrodes de commande, caractérisé en ce que les signaux appliqués sur chaque piste commune (BP1, BP2, BP3) sont binaires, et adoptent deux valeurs distinctes pendant des intervalles de temps de deux durées prédéterminées.

Figure imgaf001
A method of n-plexed control of a multi-segment liquid crystal display, wherein each group (A 1 , A 2 ) of n segments (A 11 , A 12 , A 13 , A 21 , A 22 , A 23 ) is connected to n common tracks (BP 1 , BP 2 , BP 3 ), and to a control electrode (S 1 , S 2 , S 3 , S 4 ) dedicated to said group (A 1 , A 2 ), so as to applying to each segment an alternating voltage according to the signals present on the common tracks and the control electrodes, characterized in that the signals applied to each common track (BP 1 , BP 2 , BP 3 ) are binary, and adopt two distinct values during time intervals of two predetermined durations.
Figure imgaf001
EP05300771A 2004-09-28 2005-09-23 Method for driving multi-segment liquid crystal display Withdrawn EP1640943A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0452178A FR2875937A1 (en) 2004-09-28 2004-09-28 METHOD FOR CONTROLLING A MULTI-SEGMENT LIQUID CRYSTAL DISPLAY

Publications (2)

Publication Number Publication Date
EP1640943A2 EP1640943A2 (en) 2006-03-29
EP1640943A3 true EP1640943A3 (en) 2008-03-19

Family

ID=34951027

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05300771A Withdrawn EP1640943A3 (en) 2004-09-28 2005-09-23 Method for driving multi-segment liquid crystal display

Country Status (2)

Country Link
EP (1) EP1640943A3 (en)
FR (1) FR2875937A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4271410A (en) * 1978-08-10 1981-06-02 Rockwell International Corporation LCD Data processor driver and method
US4288792A (en) * 1977-12-28 1981-09-08 Canon Kabushiki Kaisha Electronic apparatus with time-division drive
FR2596186A1 (en) * 1986-03-20 1987-09-25 Lucas Elect Electron Syst Drive arrangement for liquid crystal display

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4288792A (en) * 1977-12-28 1981-09-08 Canon Kabushiki Kaisha Electronic apparatus with time-division drive
US4271410A (en) * 1978-08-10 1981-06-02 Rockwell International Corporation LCD Data processor driver and method
FR2596186A1 (en) * 1986-03-20 1987-09-25 Lucas Elect Electron Syst Drive arrangement for liquid crystal display

Also Published As

Publication number Publication date
FR2875937A1 (en) 2006-03-31
EP1640943A2 (en) 2006-03-29

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