Bias circuit and method for operating the same
AssigneeLG Electronics Inc.
InventorU. Kim
Life of this patent
Estimating the term…
Abstract
A bias circuit and a method for operating the same minimizes a picture distortion. The bias circuit includes a main capacitor and a plurality of sub capacitors for compensating picture distortion, a controller provides control signals having different duty cycles, and a plurality of switches receiving each of the switch control signals and changing each link (or path) between the main capacitor and the sub capacitors in accordance with the received switch control signals.
Claims32
A bias circuit for a display device to prevent and/or compensate a picture distortion, comprising:
- a controller that generates a plurality of control signals and each of the plurality of first control signals having a different duty cycle;
- and
- a compensation circuit having a plurality of first switches, at least one main capacitor and a plurality of sub capacitors, a corresponding first switch provided between the main capacitor and a corresponding sub capacitor, wherein the plurality of first switches determine at least one of whether the main capacitor is coupled to the plurality of sub capacitors or whether the plurality of sub capacitors are coupled to each other, based on the plurality of first control signals.
A bias circuit for a display device, comprising:
- a controller that generates a plurality of first control signal and each of the plurality of first control signals having a different duty cycle;
- and
- a compensation circuit responsive to the plurality of control signals, wherein a duty cycle of a corresponding first control signal determines which portion of a picture is compensated for distortion.
A method of driving a bias circuit, comprising:
- generating switch control signals each having a different duty cycle;
- providing the switch control signal to a plurality of switches;
- and
- providing a combined capacitance value of a main capacitor and a plurality of sub capacitors, which are connected to each switch, in accordance with the switch control signals.
Dependencies are inferred from the claim text.