ES2074143T3 - Circuito de excitacion de un dispositivo de presentacion de cristal liquido. - Google Patents

Circuito de excitacion de un dispositivo de presentacion de cristal liquido.

Info

Publication number
ES2074143T3
ES2074143T3 ES90313541T ES90313541T ES2074143T3 ES 2074143 T3 ES2074143 T3 ES 2074143T3 ES 90313541 T ES90313541 T ES 90313541T ES 90313541 T ES90313541 T ES 90313541T ES 2074143 T3 ES2074143 T3 ES 2074143T3
Authority
ES
Spain
Prior art keywords
circuit
bits
video signals
liquid crystal
registration
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 - Lifetime
Application number
ES90313541T
Other languages
English (en)
Inventor
Hidenori Fukuda
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Application granted granted Critical
Publication of ES2074143T3 publication Critical patent/ES2074143T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • G09G3/3685—Details of drivers for data electrodes
    • G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/027—Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
    • 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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2011—Display of intermediate tones by amplitude modulation
    • 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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2014—Display of intermediate tones by modulation of the duration of a single pulse during which the logic level remains constant

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 Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

CIRCUITO ACCIONADOR DE UNA VISUALIZACION DE CRISTAL LIQUIDO PARA ACCIONAR LINEAS FUENTE DE UNA VISUALIZACION DE CRISTAL LIQUIDO DEL TIPO DE MATRIZ ACTIVA QUE TIENE UN ARREGLO DE MATRIZ DE TRANSISTOR DE PELICULA FINA QUE COMPRENDE UN CIRCUITO DE REGISTRO DE CAMBIO PARA ALMACENAR SECUENCIALMENTE SEÑALES DE VIDEO DIGITAL PARA UNA LINEA, CONSTANDO CADA UNA DE LAS SEÑALES DE VIDEO DIGITAL DE DATOS PIXEL DE UNA SERIE DE BITS PREDETERMINADOS, UN CIRCUITO DE RETENCION A FIN DE CONSERVAR PARA UN PERIODO HORIZONTAL LAS SEÑALES DEL VIDEO DIGITAL PARA UNA LINEA ALMACENADA EN EL CIRCUITO DE REGISTRO DE CAMBIO, UN CIRCUITO DE CONVERSION PARA CLASIFICAR CADA CONJUNTO DE DATOS PIXEL, CONSTITUYENDO LAS SEÑALES DE VIDEO DIGITAL PARA UNA LINEA IMPRESA DESDE EL CIRCUITO DE RETENCION EN BITS SUPERIORES E INFERIORES, SELECCIONANDO DOS TIPOS DIFERENTES DE VOLTAJES DE CORRIENTE CONTINUA ADYACENTES, CONFORME A UN VALOR DESIGNADO POR LOS BITS SUPERIORES, EFECTUANDO UNA MODULACION DE ANCHURA DE PULSO ENTRE LOS DOS DIFERENTES VOLTAJES DE CORRIENTE CONTINUA, SEGUN UN VALOR DESIGNADO POR LOS BITS INFERIORES Y SUMINISTRANDO SEÑALES DE VIDEO ANALOGICO PARA LAS CORRESPONDIENTES LINEAS FUENTE DEL ARREGLO MATRIZ, Y UN CIRCUITO DE GENERACION DE DATOS DE COMPARACION QUE TIENE BITS MEDIANTE UN NUMERO IGUAL AL DE LOS BITS INFERIORES Y SE COMPARA CON LOS BITS INFERIORES PARA EL CIRCUITO DE CONVERSION.
ES90313541T 1989-12-14 1990-12-12 Circuito de excitacion de un dispositivo de presentacion de cristal liquido. Expired - Lifetime ES2074143T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1324639A JP2642204B2 (ja) 1989-12-14 1989-12-14 液晶表示装置の駆動回路

Publications (1)

Publication Number Publication Date
ES2074143T3 true ES2074143T3 (es) 1995-09-01

Family

ID=18168077

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90313541T Expired - Lifetime ES2074143T3 (es) 1989-12-14 1990-12-12 Circuito de excitacion de un dispositivo de presentacion de cristal liquido.

Country Status (10)

Country Link
US (1) US5162786A (es)
EP (1) EP0433054B1 (es)
JP (1) JP2642204B2 (es)
KR (1) KR940002295B1 (es)
CN (1) CN1021382C (es)
AU (1) AU617258B2 (es)
BR (1) BR9006329A (es)
DE (1) DE69021027T2 (es)
ES (1) ES2074143T3 (es)
MY (1) MY105389A (es)

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Also Published As

Publication number Publication date
JP2642204B2 (ja) 1997-08-20
DE69021027D1 (de) 1995-08-24
JPH03184018A (ja) 1991-08-12
DE69021027T2 (de) 1996-01-25
EP0433054A3 (en) 1992-08-05
EP0433054B1 (en) 1995-07-19
BR9006329A (pt) 1991-09-24
AU6771290A (en) 1991-08-29
CN1052565A (zh) 1991-06-26
EP0433054A2 (en) 1991-06-19
CN1021382C (zh) 1993-06-23
AU617258B2 (en) 1991-11-21
US5162786A (en) 1992-11-10
MY105389A (en) 1994-09-30
KR910013034A (ko) 1991-08-08
KR940002295B1 (ko) 1994-03-21

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