(57) According to the present invention, there is provided a circuit for driving a liquid
crystal panel includes a plurality of shift registers (11Aa, 12Aa, ..., 1mAa) connected
in cascade on an A array for transferring data in one direction, a plurality of shift
registers (11Bc, 12Bc, ..., 1mBc) on a B array for transferring the data transferred
from the shift registers (11Aa, 12Aa, ..., 1mAa) in a direction opposite to the one
direction, and a plurality of circuit blocks (11Ac, 12Ac, ..., 1mAc; 11Bc, 12Bc, ...,
1mBc) on the A and B arrays for temporarily storing the data transferred from the
shift registers (11Aa, 12Aa, ...., 1mAa; 11Bc, 12Bc, ..., 1mBc). The circuit blocks
(11Ac, 12Ac, ..., 1mAc; 11Bc, 12Bc, ..., 1mBc) include output stages for supplying
the data outside a semiconductor chip, and the output stages are constituted of MOS
transistors (3A3, 3B3). The MOS transistors of the first circuit block (11Ac) on the
A array and the m-th circuit block (1mBc) of the B array, those of the second circuit
block (12Ac) on the A array and the (m-1)-th circuit block (1m-1Bc) on the B array,
..., those of the m-th circuit block (1mAc) on the A array and the first circuit block
(11Bc) on the B array are symmetrically arranged, respectively. The currents flow
through the symmetrical MOS transistors in the same direction.
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