Patent ID: 7170484
Filing Date: 2007-01-30
Classification: G09G

Abstract:
1. A display device comprising: pixels disposed to correspond to portions, at which a plurality of scanning lines and a plurality of signal lines intersect, wherein each of the pixels includes a pixel electrode, a switching element for selecting the pixel electrode, and a storage circuit interposed between the pixel electrode and the switching element for storing data to be written in the pixel electrode; and a pair of alternating voltage power lines for applying alternating voltages varying in polarities opposite to each other, to the storage circuit, wherein the storage circuit includes a first transistor pair of an NMOS transistor and a PMOS transistor connecting in series while bridging the paired alternating voltage power lines, and a second transistor pair of an NMOS transistor and a PMOS transistor connected in series while bridging the paired alternating voltage power lines, wherein a common node of control electrodes of the first transistor pair is connected with the series connection intermediate node of the second transistor pair whereas a common node of control electrodes of the second transistor pair is connected with the series connection intermediate node of the first transistor pair, wherein diodes having the same conduction direction as that of the NMOS transistor and the PMOS transistor composing the first transistor pair are connected in series with the NMOS transistor and the PMOS transistor composing the first transistor pair, respectively, wherein an output node of the switching element is connected with the node of the first transistor pair whereas the series connection intermediate node of the second transistor pair is connected with the pixel electrode, and wherein a capacitor is connected between the common node of the control electrodes of the second transistor pair and the series connection intermediate node of the second transistor pair.