Gate driver with multiple slopes for plasma display panels
AssigneeInfineon Technologies Americas Corp.
InventorDong Young Lee
Life of this patent
Estimating the term…
Abstract
According to an exemplary embodiment, a driver circuit for generating a reset pulse of an output waveform includes a plurality of ramp paths, each ramp path being configured to control the slope of the reset pulse. The driver circuit also includes a falling switch configured to selectively hold the output waveform low. The driver circuit further includes a switch controller for selectively enabling the plurality of ramp paths and the falling switch to generate the reset pulse. The switch controller can selectively enable the plurality of ramp paths responsive to a reference setting signal to select the slope of the reset pulse. The driver circuit can also generate a sustain pulse. The driver circuit is can generate the reset pulse and the sustain pulse by driving a transistor.
Claims17
A driver circuit for generating a reset pulse of an output waveform, said driver circuit comprising:
- a plurality of ramp paths, each ramp path having a different resistance to vary a current provided to a gate of a transistor to control a slope of said reset pulse such that said reset pulse has a desired slope amongst multiple selectable slopes;
- a falling switch configured to selectively connect said gate of said transistor to ground, thereby selectively holding said output waveform low;
- a mode switch configured to selectively connect said plurality of ramp paths to said gate and said falling switch;
- a switch controller configured to selectively enable said plurality of ramp paths and said falling switch to generate said reset pulse, wherein selectively enabling said plurality of ramp paths selects said desired slope from said multiple selectable slopes.
Dependencies are inferred from the claim text.