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:
Jan. 07, 2014
Filed:
Jul. 22, 2003
Mark J. Childs, Sutton, GB;
David A. Fish, Haywards Heath, GB;
Jason R. Hector, Redhill, GB;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
An active matrix electroluminescent display device has pixels using an amorphous silicon or microcrystalline silicon drive NMOS transistor () connected between the anode of the display element () and a power supply line (). A storage capacitor () is connected between the anode of the display element and the gate of the drive transistor (). An amorphous silicon or microcrystalline silicon second drive NMOS transistor () supplies a holding voltage to the anode of the display element (). This arrangement enables the voltage across the display element to be held while the transistor gate drive voltage is stored on the storage capacitor. This enables an accurate current source pixel circuit to be implemented using NMOS transistors.