Patent ID: 6437764
Filing Date: 2002-08-20
Classification: G02F,G09G

Abstract:
A liquid crystal display device comprising:a pair of substrates between which a liquid crystal layer is sealed; a plurality of switching elements provided on one of the pair of substrates; a plurality of image signal driver circuits juxtaposed along an edge of the one of the pair of substrates and outputting image signals to the plurality of switching elements; a printed circuit board having a plurality of output portions including a plurality of wiring layers electrically connected to input electrodes of one of the plurality of image signal driver circuits through a plurality of terminals juxtaposed on the edge of the one of the pair of the substrates; and a plurality of leads being formed on the edge of the one of the pair of the substrates, respective ones of the p plurality of leads connecting one of the plurality of terminals to one of the input electrodes; wherein the plurality of terminals are divided into at least first, second and third groups arranged in this order along the edge of the one of the pair of the substrates, each of the first, second and third groups including at least two of the plurality of terminals, the terminals belonging to at least one of the first group and the third group supplying input logic signals from the printed circuit board to the one of the plurality of image signal driver circuits, and the terminals belonging to the second group supplying electricity from the printed circuit board to the one of the plurality of image signal driver circuits; and wherein the plurality of leads are divided into a first logic input group connected to the terminals belonging to the first group, a power supply input group connected to the terminals belonging to the second group, and a second logic input group connected to the terminals belonging to the third group, the leads of the power supply input group being located at a middle area with respect to the one of the plurality of image signal driver circuits.