The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 10, 2002
Filed:
Oct. 19, 2000
Stephen J. Battersby, Haywards Heath, GB;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
An active matrix electroluminescent (EL) display device has an array of pixels ( ) on a substrate ( ) each comprising an EL display element ( ) and a driving device ( ) controlling drive current therethrough in a drive period based on a data signal applied in a preceding address period, and a drive circuit ( ) connected to the pixels via sets of address conductors ( ) for selecting the rows of pixels and supplying data signals to each selected row of pixels in a respective row address period. The data signals are provided by drive ICs ( ). To reduce the number of ICs required, a multiplexing circuit ( ) is integrated with the pixel array on the substrate ( ) and connected between the drive IC outputs ( ) and one set of address conductors ( ) and is operable to apply data signals from an individual drive IC output to a respective associated plurality of address conductors in sequence in a row address period. The display elements of a selected row of pixels are prevented from operating in the row address period to avoid unwanted cross-talk effects. Row selection signals may similarly be supplied by a multiplexing circuit ( ) integrated on the substrate.