Patent ID: 7911425
Filing Date: 2011-03-22
Classification: G09G

Abstract:
1. A display device comprising: an image display unit comprising a plurality of sets of a display element and a pixel circuit arranged in a matrix in rows and columns, a brightness of the display element being controlled by a current flowing through the display element, and the pixel circuit holding a brightness signal and generating a current according to the brightness signal to supply to the display element; a first and a second scanning line provided in each row of the image display unit; a row driving circuit which outputs a first scanning signal to the first scanning lines to define a period for setting the brightness signal to the pixel circuit and a second scanning signal to the second scanning lines to define a period during which the pixel circuit supplies the current to the display element; a data line provided in each column of the image display unit; and a column driving circuit which outputs the brightness signal to the data lines; wherein the following two operations are alternately repeated: a first operation in which the row driving circuit outputs the first scanning signals to the first scanning lines in odd rows, and the column driving circuit outputs the brightness signal to the data lines to set the brightness signal to the pixel circuit in the odd rows of the image display unit; and a second operation in which the row driving circuit outputs the first scanning signals to the first scanning lines in even rows, and the column driving circuit outputs the brightness signal to the data lines to set the brightness signal to the pixel circuit in the even rows of the image display unit, and the second scanning signals are applied two or more times to each of the second scanning lines in a period of the first and second operation, wherein in the first operation, the odd rows are subjected to current programming, and immediately thereafter, the EL elements in the odd rows emit light, and the EL elements in the even rows store data at the time of the previous programming, and the EL elements in the even rows emit light with the same brightness as in the previous second operation, and in the second operation, the even rows are subjected to current programming, and immediately thereafter, the EL elements in the even rows emit light, and the EL elements in the odd rows emit light according to the current programming to which the previous first operation is subjected.