Patent ID: 7256774
Filing Date: 2007-08-14
Classification: G09G,H01L

Abstract:
1. A display device, setting a value of a current allowed to flow to an electro-optic element of at least one pixel so as to drive the electro-optic element on the basis of the current, wherein the pixel includes: a first wiring for allowing the current to flow to the electro-optic element; a first active element, provided in series to the electro-optic element so as to be positioned in a path for allowing the current to flow from the first wiring to the electro-optic element, which has a control terminal for controlling conductance of the first active element; a second active element, provided in series to the electro-optic element and the first active element so as to be positioned in the path, which has a control terminal for allowing/disallowing conduction; an electric charge retaining section for storing electric charge so as to apply a voltage corresponding to thus stored electric charge to the control terminal of the first active element as a control voltage for controlling the conductance of the first active element; a third active element, provided in a path for supplying the electric charge to the electric charge retaining section, which has a control terminal for allowing/disallowing conduction, said third active element causing the electric charge retaining section to retain the electric charge by disallowing conduction, so that the pixel has only said first, second and third active elements; wherein a current source circuit and a voltage source circuit are connected to the first wiring in a switchable manner; a second wiring for applying a control voltage for allowing/disallowing conduction to the control terminal of the second active element; and a third wiring for applying a control voltage for allowing/disallowing conduction to the control terminal of the third active element.