Patent ID: 6556182
Filing Date: 2003-04-29
Classification: G09G

Abstract:
A liquid crystal display device comprising a liquid crystal display element having a plurality of pixels arranged in a matrix and a plurality of video signal lines for applying a video signal voltage to each of said plurality of pixels in accordance with a display data, and a video signal line driver circuit for supplying said video signal voltages to said plurality of video signal lines,said video signal line driver circuit including a gray-scale voltage generating circuit provided with a voltage-dividing resistor circuit for dividing voltages between a plurality of gray-scale reference voltages supplied from an external power supply circuit so as to generate a plurality of gray-scale voltages, a plurality of selector circuits corresponding to said plurality of video signal lines for selecting one gray-scale voltage from among said plurality of gray-scale voltages in accordance with said display data, said voltage-dividing resistor circuit including a resistive element provided with a plurality of intermediate taps for dividing voltages between said plurality of gray-scale reference voltages so as to generate said plurality of gray-scale voltages, a plurality of gray-scale voltage lines corresponding to said plurality of gray-scale voltages, an interlayer insulating film for insulating said plurality of gray-scale lines from said resistive element, and a plurality of connections for electrically connecting each of said plurality of gray-scale voltage lines to a corresponding one of said plurality of intermediate taps through a hole formed in said interlayer insulating film, said plurality of connections being disposed at positions displaced from a current path of a current flowing in said resistive element.