Patent ID: 7710412
Filing Date: 2010-05-04
Classification: G02F

Abstract:
1. A liquid crystal display device comprising: a first substrate; a second substrate; a liquid crystal composition sandwiched between the first substrate and the second substrate; a display region formed above the first substrate; a plurality of pixel regions formed above the display region in a matrix array; a plurality of pixel electrodes formed above the pixel regions; a plurality of switching elements which supply video signals to the pixel electrodes; a plurality of video signal lines which supply video signals to switching elements; a plurality of scanning signal lines which supply scanning signals for controlling the switching elements; a video signal circuit which outputs the video signals to the video signal lines; a scanning signal circuit which outputs the scanning signals to the scanning signal lines; a first substrate voltage supply line which is formed in a same layer as the video signal lines, is formed above a periphery of a display part, and supplies a substrate voltage to the first substrate; and a second substrate voltage supply line which is formed in the same layer as the video signal lines, is formed in parallel to the video signal lines, and supplies a substrate voltage to the first substrate in the pixel regions; wherein the switching elements make a electrically connection of the pixel electrodes and the video signal lines to each other when an output signal from the scanning signal circuit is stopped; wherein a plurality of connection lines are provided between the video signal circuit and video signal lines and are formed in a different layer from the layer of the video signal lines; and wherein the connection lines intersect the first substrate voltage supply line which is formed in the same layer as the video signal lines.