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1. (EP0804784) DIGITAL DRIVING OF MATRIX DISPLAY DRIVER

Office : European Patent Office
Application Number: 96935244 Application Date: 12.11.1996
Publication Number: 0804784 Publication Date: 05.11.1997
Publication Kind : B1
Prior PCT appl.: Application Number:IB1996001210 ; Publication Number: Click to see the data
IPC:
G 09G
G02F 1/133
G09G 3/20
G09G 3/36
G PHYSICS
09
EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
G
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3
Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20
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
34
by control of light from an independent source
36
using liquid crystals
G PHYSICS
02
OPTICS
F
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1
Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01
for the control of the intensity, phase, polarisation or colour
13
based on liquid crystals, e.g. single liquid crystal display cells
133
Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
G PHYSICS
09
EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
G
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3
Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20
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
G PHYSICS
09
EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
G
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3
Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20
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
34
by control of light from an independent source
36
using liquid crystals
CPC:
G09G 3/2011
G09G 3/3688
G09G 2310/027
Applicants: KONINKL PHILIPS ELECTRONICS NV
Inventors: JANSSEN PETER J M
Priority Data: 9601210 12.11.1996 IB
56196195 22.11.1995 US
Title: (DE) DIGITALE ANSTEUERUNG FÜR EINE MATRIXANZEIGESTEUERUNGSSCHALTUNG
(EN) DIGITAL DRIVING OF MATRIX DISPLAY DRIVER
(FR) COMMANDE NUMERIQUE D'UN CIRCUIT DE COLONNE D'AFFICHEUR MATRICIEL
Abstract: front page image
(EN) A driver for a matrix display successively stores digital data codes. During a first time interval, the driver charges a capacitor coupled to its output to a voltage level represented by the most-significant bits of a stored data code. During a second time interval, the driver shifts the voltage on the capacitor by a magnitude represented by the least significant bits of the stored data code.
(FR) Cette invention concerne un circuit d'attaque destiné à un afficheur matriciel, lequel stocke séquentiellement des codes de données numériques. Au cours d'un premier intervalle, le circuit d'attaque charge un condensateur couplé à son entrée, jusqu'à un niveau de tension représenté par les bits les plus significatifs d'un code de données stocké. Au cours d'un second intervalle de temps, le circuit d'attaque décale la tension du condensateur d'une grandeur représentée par les bits les moins significatifs du code de données stocké.
Also published as:
JPH10513281WO/1997/019439