Patent ID: 8427170
Filing Date: 2013-04-23
Classification: G09G,Y10T

Abstract:
1. A drive circuit array substrate comprising: a plurality of control signal wires formed on a substrate and extending in a first direction; a plurality of gradation signal wires formed on the substrate and extending in a second direction that is different from the first direction; a plurality of pixels formed on the substrate and arranged near intersections of the control signal wires and the gradation signal wires; and a drive element test circuit formed on the substrate, wherein each of the pixels includes a drive circuit, wherein the drive circuit includes a drive element and a selection element, wherein one end of a current path of the selection element is connected to one end of a current path of the drive element, and the other end of the current path of the selection element is connected to the gradation signal wire; wherein the drive element test circuit includes a plurality of test wires respectively connected to the gradation signal wires, a feeder wire to which an external circuit having a voltage source or a current source is connected, a plurality of read switches each having a current path connected to the test wire at one end and connected to the feeder wire at the other end, and a test wire selection circuit selecting the read switches in sequence; and wherein the feeder wire allows a current to run through the current path of the drive element from the external circuit via the selected read switch, the test wire, and the gradation signal wire when the feeder wire is connected to the external circuit.