EP0105767B1 - Procédé de commande d'un imageur matriciel - Google Patents

Procédé de commande d'un imageur matriciel Download PDF

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Publication number
EP0105767B1
EP0105767B1 EP83401688A EP83401688A EP0105767B1 EP 0105767 B1 EP0105767 B1 EP 0105767B1 EP 83401688 A EP83401688 A EP 83401688A EP 83401688 A EP83401688 A EP 83401688A EP 0105767 B1 EP0105767 B1 EP 0105767B1
Authority
EP
European Patent Office
Prior art keywords
electrodes
columns
signal
lines
signals
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
EP83401688A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0105767A1 (fr
Inventor
Jean Frédéric Clerc
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of EP0105767A1 publication Critical patent/EP0105767A1/fr
Application granted granted Critical
Publication of EP0105767B1 publication Critical patent/EP0105767B1/fr
Expired 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
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3622—Control of matrices with row and column drivers using a passive matrix
    • G09G3/3644—Control of matrices with row and column drivers using a passive matrix with the matrix divided into sections

Definitions

  • the present invention relates to a method for controlling a matrix imager. It finds mainly an application in the production of liquid crystal display devices, used in particular in the binary display of complex images or of alpha-numeric characters.
  • These matrix display devices generally consist of a material formed of several zones distributed in a matrix and interspersed in a system with crossed bands or, in English terminology, in a “crossbar” system.
  • Such systems include a first family of p parallel electrode lines and a second family of q parallel electrode columns, the electrode lines and columns being crossed, an area ij of the material being defined by the overlap region between line i, where i is an integer such as 1 ⁇ i ⁇ p and by column j, where j is an integer such as 1 ⁇ j ⁇ q.
  • These systems further comprise means making it possible to deliver on the rows and columns of electrodes appropriate excitation signals serving to excite an optical property of the material.
  • the most commonly used method of controlling a matrix imager for example with liquid crystals, consists in applying sequentially or successively to the electrode lines an electrical signal S o, for example sinusoidal, and in applying in parallel or simultaneously to the columns electrode and during the addressing of a line, sinusoidal electrical signals S j which can be either in phase opposition, or in phase with the signal S o depending on whether or not it is desired to display the liquid crystal zone corresponding.
  • an electrical signal S o for example sinusoidal
  • electrode structures and control signals which make it possible to keep the number of display points, or display areas, desired on the imager and to halve the number rows of electrodes addressed sequentially.
  • the fact of sequentially controlling the electrode lines and according to the increasing values of i is compatible with taking information on a video signal.
  • the use of electrode columns having horizontal discontinuities makes it possible to separately control the different sets of electrode columns formed and therefore to increase the multiplexing rate of the imager, that is to say its number of electrode lines.
  • the electrode columns have a very simple structure.
  • the column electrodes j have n horizontal discontinuities 28 defining n + 1 identical sets of q columns of electrodes, q being the total number of columns of electrodes.
  • n horizontal discontinuities 28 defining n + 1 identical sets of q columns of electrodes, q being the total number of columns of electrodes.
  • FIG. 2 only one discontinuity 28 has been shown defining two sets of electrode columns, an upper set bearing the reference d and a lower set bearing the reference e.
  • this signal J is applied simultaneously to the columns of electrodes of the first set during the addressing time, or time of application of the signal I, of the p / n + 1 first rows of electrodes, the columns electrodes of other games receiving a zero signal.
  • this figure shows a third signal K corresponding to the signal, or voltage, seen by the area ij of the display material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
EP83401688A 1982-08-26 1983-08-19 Procédé de commande d'un imageur matriciel Expired EP0105767B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8214644 1982-08-26
FR8214644A FR2532455A1 (fr) 1982-08-26 1982-08-26 Procede de commande d'un imageur matriciel

Publications (2)

Publication Number Publication Date
EP0105767A1 EP0105767A1 (fr) 1984-04-18
EP0105767B1 true EP0105767B1 (fr) 1987-01-07

Family

ID=9277066

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83401688A Expired EP0105767B1 (fr) 1982-08-26 1983-08-19 Procédé de commande d'un imageur matriciel

Country Status (6)

Country Link
US (1) US4541690A (enrdf_load_stackoverflow)
EP (1) EP0105767B1 (enrdf_load_stackoverflow)
JP (1) JPS5958482A (enrdf_load_stackoverflow)
CA (1) CA1217586A (enrdf_load_stackoverflow)
DE (1) DE3369020D1 (enrdf_load_stackoverflow)
FR (1) FR2532455A1 (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59121391A (ja) * 1982-12-28 1984-07-13 シチズン時計株式会社 液晶表示装置
JPS59204887A (ja) * 1983-05-10 1984-11-20 セイコーエプソン株式会社 表示パネル駆動方法
JPS60220316A (ja) * 1984-04-16 1985-11-05 Canon Inc 液晶光学素子
FR2580106B1 (enrdf_load_stackoverflow) * 1985-04-05 1988-03-18 Commissariat Energie Atomique
FR2581783B1 (fr) * 1985-05-07 1989-05-12 Commissariat Energie Atomique Dispositif d'affichage a matrice active et a commande integree comprenant deux familles d'electrodes lignes et deux familles d'electrodes colonnes par point image et son procede de commande
GB8725824D0 (en) * 1987-11-04 1987-12-09 Emi Plc Thorn Display device
US4944578A (en) * 1988-07-21 1990-07-31 Telex Communications Color graphic imager utilizing a liquid crystal display

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5458399A (en) * 1977-10-18 1979-05-11 Sharp Corp Matrix type liquid crystal display unit
JPS5917430B2 (ja) * 1977-10-31 1984-04-21 シャープ株式会社 マトリツクス型液晶表示装置
US4375317A (en) * 1978-11-16 1983-03-01 Sharp Kabushiki Kaisha Multi-layered liquid crystal display panel
JPS5577790A (en) * 1978-12-08 1980-06-11 Seiko Instr & Electronics Multiplex liquid crystal display unit
US4443062A (en) * 1979-09-18 1984-04-17 Citizen Watch Company Limited Multi-layer display device with nonactive display element groups

Also Published As

Publication number Publication date
DE3369020D1 (en) 1987-02-12
US4541690A (en) 1985-09-17
CA1217586A (en) 1987-02-03
JPS5958482A (ja) 1984-04-04
FR2532455A1 (fr) 1984-03-02
FR2532455B1 (enrdf_load_stackoverflow) 1984-12-07
JPH0150915B2 (enrdf_load_stackoverflow) 1989-11-01
EP0105767A1 (fr) 1984-04-18

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