Patent ID: 7595793

Claim:
A plain display apparatus, comprising: a plurality of display elements formed in vicinity of signal lines and scanning lines disposed in a matrix form; and a signal line drive circuit which switches order of supplying pixel data to the signal lines at random for each horizontal line, wherein the signal line drive circuit includes: a pixel data switching circuit which controls switching of whether the pixel data is supplied to the signal lines in each block having a pluralitly of signal lines; a random number generating circuit which generates the random numbers or the pseudo-random numbers; and an order setting circuit which sets the order that the pixel data switching circuit supplies pixel data to the signal lines in each block based on the random numbers or the pseudo-random numbers generated by the random generating circuit; and wherein the random number generating circuit includes: a prime number counter which conducts a count operation by using a certain prime number as a reference; and a random value output circuit which outputs random values different from each counter value of the prime number counter; wherein the order setting circuit sets the order that the pixel data switching circuit supplies the pixel data to the signal lines in each block based on the random values.