Abstract: In a liquid crystal display device comprising, first and second substrates and a liquid crystal layer sealed therebetween constituting a panel, a first plurality of electrodes extending in a first direction in the panel, a second plurality of electrodes being extending in the second direction transverse to the first direction in the panel, a first printed circuit board having a laminated structure of a plurality of printed circuit layers and disposed at a periphery of the panel extending along the second direction, and a plurality of first driver circuits juxtaposed between the first printed circuit board and the panel in the second direction and having a plurality of electrical contacts with the first printed circuit board on its first printed circuit layer from its upper surface so as to supply the at least one clock signal in parallel to the respective first driver circuits, the present invention disposes a transmitting line for the at least one clock signal on one of the printed circuit layers of the a fi