Patent ID: 7113156
Filing Date: 2006-09-26
Classification: G09G

Abstract:
1. A driver circuit of a display device having a plurality of scanning lines and a plurality of data lines placed like a matrix therein, comprising: a first storage circuit for storing digital image data inputted to the display device; a first voltage generation circuit for generating a plurality of voltages to be used on said display device when driving said display device; a first selection circuit for selecting one voltage of said plurality of voltages according to said digital image data; a first driving circuit including at least an amplifier for driving said data lines; a first detection circuit for detecting variations in output voltages of said first driving circuit; a second storage circuit for storing a state of the variations in the output voltages of said first driving circuit; and a first correction circuit for correcting the output voltages of said first driving circuit, wherein: said first correction circuit connects one terminal of a first switch and a second switch to a second transistor connected in parallel with a first transistor of the difference input stage of said amplifier and a gate electrode of said second transistor, connects the other terminal of said first switch to an output terminal of said first selection circuit or to the output terminal of said amplifier, connects the other terminal of said second switch to a source electrode of said second transistor, opens and closes said first switch and said second switch according to said correction data, and renders said second transistor either active or inactive so as to change the value of the current running in one of the difference input stages of the amplifier.