Patent ID: 7649512

Claim:
An organic EL display device comprising: a dot-matrix type organic EL panel having a plurality of scanning lines and a plurality of drive lines; a plurality of scanning arrangements corresponding to number of the plurality of scanning lines, each of the plurality of scanning arrangements connecting said scanning lines freely to a first potential or a second potential; a drive switch arrangement for connecting said drive lines freely to a drive current source or an off potential; and a control arrangement for causing said scanning switch arrangement to connect said scanning lines to said first potential thereby to select said scanning lines sequentially and to control the connected state of said drive switch arrangement, wherein each of said scanning switch arrangements includes a first transistor for connecting said scanning lines to said first potential, and a second transistor for connecting said scanning lines to said second potential, and said control arrangement controls said first transistors of scanning switch arrangements, which are not selected for luminesce, to be connected to said first potential, wherein the first potential changes depending upon numbers of pixels to luminesce on scanning lines that are selected for luminesce.