Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (EP0923067) PIXEL CIRCUIT, DISPLAY DEVICE AND ELECTRONIC EQUIPMENT HAVING CURRENT-DRIVEN LIGHT-EMITTING DEVICE

Office : European Patent Office
Application Number: 98905827 Application Date: 06.03.1998
Publication Number: 0923067 Publication Date: 16.06.1999
Publication Kind : B1
Designated States: DE, GB, NL
Prior PCT appl.: Application Number:JP1998000971 ; Publication Number: Click to see the data
IPC:
G09G 3/30
G09G 3/32
G09G 3/36
H01L 27/32
H05B 33/08
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
22
using controlled light sources
30
using electroluminescent panels
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
22
using controlled light sources
30
using electroluminescent panels
32
semiconductive, e.g. diodes
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
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
27
Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
28
including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part
32
with components specially adapted for light emission, e.g. flat-panel displays using organic light-emitting diodes
H ELECTRICITY
05
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
B
ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
33
Electroluminescent light sources
02
Details
08
Circuit arrangements not adapted to a particular application
CPC:
G09G 3/32
G09G 3/3233
G09G 2300/0417
G09G 2300/0819
G09G 2300/0842
G09G 2300/088
G09G 2320/0285
G09G 2320/029
G09G 2320/043
G09G 2320/045
G09G 2330/02
G09G 2330/028
G09G 2360/145
G09G 2360/148
H01L 27/3262
H01L 27/3269
H05B 33/08
Applicants: SEIKO EPSON CORP
Inventors: KIMURA MUTSUMI
SHIMODA TATSUYA
KIGUCHI HIROSHI
Priority Data: 23310897 28.08.1997 JP
5785897 12.03.1997 JP
9800971 06.03.1998 JP
Title: (DE) PIXELSCHALTUNG, ANZEIGEVORRICHTUNG UND ELEKTRONISCHE APPARATUR MIT STROMGESTEUERTER LICHTEMITTIERENDER VORRICHTUNG
(EN) PIXEL CIRCUIT, DISPLAY DEVICE AND ELECTRONIC EQUIPMENT HAVING CURRENT-DRIVEN LIGHT-EMITTING DEVICE
(FR) CIRCUIT PIXEL, AFFICHEUR, ET EQUIPEMENT ELECTRONIQUE A DISPOSITIF PHOTOEMETTEUR COMMANDE PAR COURANT
Abstract: front page image
(EN) A display apparatus (100) is provided with a current driving type light-emitting device (224) and a driving device (223) for controlling a driving current flowing through the light-emitting device for each pixel. The display apparatus comprises power source units (13, 14) for supplying power for causing a driving current to flow via the driving device to the light-emitting device via a power source wire and signal wire driving units (11, 12) for supplying a data signal to the driving device via signal wires (131, 132). In addition, voltage adjusting units (16-23) adjust a voltage from a power source from the power source units or a data signal from the signal wire driving unit so that a quantity of current of a driving current flowing through the light-emitting device in such a manner that, when a data signal of a predetermined voltage is supplied to the driving device via signal wires or a quantity of emitted light emitted from the light-emitting device comes close to a predetermined reference value.
(FR) La présente invention concerne un afficheur (100) qui comporte, pour chaque pixel, un dispositif photoémetteur commandé par courant (224) et un organe de commande (223) venant réguler un courant de commande traversant le dispositif photoémetteur en fonction de la tension d'un signal données. L'afficheur comporte également, d'une part des alimentations électriques (13, 14) faisant passer, au moyen d'un câblage électrique, le courant de commande par l'organe de commande puis par le dispositif photoémetteur, et d'autre part des logiques de commande de câblages signal (11, 12) fournissant le signal données à l'organe de commande via les câblages signal (131, 132). Des régulateurs de tension (16 - 23) assurent la régulation de la tension délivrée par les alimentations, ou une régulation de la tension du signal données fourni par les logiques de commande du câblage signal, de façon que la quantité de courant de commande passant par le dispositif photoémetteur, ou que la quantité de lumière émise par le dispositif photoémetteur lorsqu'un signal données d'une tension définie est fourni à l'organe de commande via le câblage signal se rapprochent d'une valeur de référence définie.
Also published as:
KR1020000010923US20020180721US20030063081JP3887826WO/1998/040871