| 摘要 |
PROBLEM TO BE SOLVED: To provide a flat surface display device constituted so that high frequency noise is not generated from signal lines, etc. SOLUTION: A liquid crystal panel 1 has the signal lines and scanning lines which are vertically and horizontally arranged in line, display elements 3 arranged near intersections between the signal lines and the scanning lines, analog switches 4 connected to each signal line and gate drive circuits 5 which drive each scanning line. A liquid crystal drive circuit 2 has a prime factor counter 11 which performs count operations for frequency of the number of specific prime factors, a ROM 12 which outputs random values corresponding to count values of the prime factor counter 11 and a switch control part 13 which controls on/off of the analog switches 4 based on the random values outputted from the ROM 12. Since an order of writing the signal lines by every horizontal line is made into random and orders of writing the signal lines of the same line in two continuous frames do not become the same by using the prime factor counter 11 and the ROM 12, a liquid crystal display device capable of suppressing the high frequency noise generated from the signal lines, etc. and with less unnecessary radio emission is realized. COPYRIGHT: (C)2006,JPO&NCIPI
|
