Device and method for driving for light-emitting display panel

Details Device and method for driving for light-emitting display panel Device and method for driving for light-emitting display panel

2007-11-13

2007-11-13

Tran, Thuy Vinh (Department: 2821)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S083000, C345S212000, C315S169300

Reexamination Certificate

active

11367281

ABSTRACT:
There is provided a device for driving a light-emitting display panel in which output limiter element is added to a DC-DC converter which associates a boosting operation. In the drive device, even though a forward voltage of a monitor element increases to operate the limiter element, predetermined display quality can be assured without considerably disrupting a color balance. On a display panel, a display region in which display pixels of R, G, and B are arranged and an arrangement region for monitor elements which monitor forward voltages of R, G, and B are formed. Output voltages obtained by the respective DC-DC converters are controlled based on the forward voltages obtained by the monitor elements. An output limiter is constituted by zener diodes to prevent converter output values from being excessive by increases in forward voltages from the monitor elements due to aging. Limiter values obtained by the zener diodes are set at different levels.

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patent: 2003-162255 (2003-06-01), None

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