Patent ID: 7295192
Filing Date: 2007-11-13
Classification: G09G

Abstract:
1. An electro-luminescent display, comprising: a plurality of scanning lines; a plurality of data lines which are arranged to cross the plurality of scanning lines and forming a plurality of pixel regions; wherein each of the pixel regions includes a switching circuit, a pixel driving circuit, and a pixel electro-luminescent device having a color type, the switching circuit being electrically connected to a respective one of the scanning lines and a respective one of the data lines, ones of the pixel electro-luminescent devices electrically connected to one of the data lines having the same color type as each other; at least one indicating driving circuit, distinct from the pixel driving circuits, the indicating driving circuit electrically connected to the one data line and controlled by a signal thereon; and at least one indicating electro-luminescent device electrically connected to and driven by the indicating driving circuit and having the same color type as the pixel electro-luminescent device electrically connected to the one data line; wherein the switching circuit comprises a first switching device and a second switching device, the pixel driving circuit comprises a first pixel driving device and a second pixel driving device; and wherein a drain of the first switching device is connected to the data line, a gate of the first switching device is connected to the scan line, a source of the first switching device is connected to a drain of the second switching device and a drain of the first pixel driving device, a gate of the second switching device is connected to the scan line, a source of the second switching device is connected to gates of the first pixel driving device and the second pixel driving device, a source of the first pixel driving device is connected to a drain of the second pixel driving device and an anode of the pixel electro-luminescent device, and a source of the second pixel driving device is connected to a power supply line.