Patent ID: 6023260
Filing Date: 2000-02-08
Classification: G09G

Abstract:
A liquid crystal display device having a liquid crystal display matrix substrate, the liquid crystal display matrix substrate including a plurality of scan lines, a plurality of data lines crossing the scan lines, a plurality of switching elements electrically connected to said scan lines and said data lines, and individual pixels electrically connected to said switching elements, the liquid crystal display device comprising:a scan line driving circuit which drives said scan lines;a data line driving circuit which drives said data lines; andan inspection signal circuit which can collectively input a signal for inspection using a first terminal of each of said data lines, wherein said data line driving circuit further comprises a single shift register having a first number of stages greater than or equal to a second number of said data lines and a plurality of switch circuits supplying a liquid crystal display signal from a second terminal, each of the plurality of switch circuits being connected to input lines for inputting said liquid crystal display signal, and within said single shift register, a bit pattern is sequentially shifted resulting in a single pulse being sequentially output from an output terminal of each stage of said single shift register, the single pulse sequentially turning on each of said plurality of switch circuits.