Drive apparatus for a display panel

Details Drive apparatus for a display panel Drive apparatus for a display panel

2007-05-01

2007-05-01

Lefkowitz, Sumati (Department: 2675)

Computer graphics processing and selective visual display system

Display driving control circuitry

C345S060000

Reexamination Certificate

active

10402958

ABSTRACT:
A display panel includes row and column electrodes. Capacitive light-emitting elements are provided at crossing portions of the row and column electrodes. A drive unit drives the display panel in response to an input image signal. The drive unit includes a column electrode driver for applying a pixel data pulse to each of the column electrodes. The pixel data pulse has a pulse voltage corresponding to pixel data derived from the input image signal. The column electrode driver includes a power source circuit for generating a resonance pulse power source voltage having a predetermined resonance amplitude. The power source circuit also applies the. resonance pulse power source voltage to a power source line. The column electrode driver also includes a pixel data pulse generator circuit for selectively connecting the column electrodes with the power source line based on the pixel data, to apply the pixel data pulse to the column electrodes. The column electrode driver also includes a DC drive prevention circuit for forcibly grounding the power source line while the resonance pulse power source voltage is dropping, if an intermediate value of the resonance amplitude is greater than a predetermined reference voltage.

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patent: 6304038 (2001-10-01), Ide et al.
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patent: 0704834 (1996-04-01), None
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patent: 1022716 (2000-07-01), None

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