Driving method, drive IC and drive circuit for liquid crystal display

A drive IC for a liquid crystal display, comprising:

• a first latch circuit for keeping first signal data in a first horizontal scanning period;
• a second latch circuit for keeping second signal data in a second horizontal scanning period adjacent to the first horizontal scanning period;
• and
• a set of switch circuits for selecting one of plural input voltages and supplying the selected voltage in accordance with output signals of the first and second latches;
• wherein at least one of the switch circuits has a larger output resistance than other switch circuits, and the switch circuit for selecting the voltage level of the compensating pulse has a larger output resistance than other switch circuits.

A drive IC for a liquid crystal display, comprising:

• a first latch circuit for keeping first signal data in a first horizontal scanning period;
• a second latch circuit for keeping second signal data in a second horizontal scanning period adjacent to the first horizontal scanning period;
• and
• a set of switch circuits for selecting one of plural input voltages and supplying the selected voltage in accordance with output signals of the first and second latches;
• wherein at least one of the switch circuits has a larger output resistance than other switch circuits, and the larger output resistance switch circuit has an output resistance within 2-50 times of the resistance of other switch circuits.

A drive IC for a liquid crystal display, comprising:

• a first latch circuit for keeping first signal data in a first horizontal scanning period;
• a second latch circuit for keeping second signal data in a second horizontal scanning period adjacent to the first horizontal scanning period;
• and
• a set of switch circuits for selecting one of plural input voltages and supplying the selected voltage in accordance with output signals of the first and second latches;
• wherein at least one of the switch circuits has a larger output resistance than other switch circuits, the larger output resistance switch circuit has an output resistance within 5-20 times of the resistance of other switch circuits.

A drive IC for a liquid crystal display, comprising:

• a first latch circuit for keeping first signal data in a first horizontal scanning period;
• a second latch circuit for keeping second signal data in a second horizontal scanning period adjacent to the first horizontal scanning period;
• a set of switch circuits for selecting one of plural input voltages and supplying the selected voltage in accordance with output signals of the first and second latches;
• and
• a plurality of bus lines;
• wherein at least one of the bus lines has a larger resistance than other bus lines, and the bus line supplied with the voltage level of a compensating pulse has a larger resistance than other bus lines.