Patent ID: 7737933

Claim:
A matrix type display unit having multiple scanning electrodes and multiple signal electrodes, comprising: a driver including a scanning circuit to drive said scanning electrodes and a signal circuit to drive said signal electrodes, said driver being positioned on one side of said display unit, wherein a predetermined amplitude pulse, having an amplitude significantly greater than a data signal, is superimposed to one of the signal electrodes and one of the scanning electrodes simultaneously with one horizontal scanning period, wherein the driver significantly reduces an amplitude of a selection signal and an amplitude difference between a selection signal and the data signal, wherein the predetermined amplitude pulse is applied simultaneously at a predetermined pulse width to each of a plurality of scanning lines and each of a plurality of signal lines at an end of a subframe, wherein a length of the subframe is (1+x)(N/4) or x+(N/4) pulse widths, wherein x is the predetermined pulse width, 0 <×<1, N is a number of the scanning lines, N>0, and a pulse width is a unit of time standardized to one scan pulse, and wherein the driver simultaneously applies an amplitude of aV of drive voltage to each of the plurality of scanning lines, and the driver simultaneously applies an amplitude of 2V of drive voltage to each of the plurality of signal lines, wherein a is a bias ratio and V is a reference voltage.