Integrated circuit for driving display panel and fan-out compensation method thereof
AssigneeNovatek Microelectronics Corp.
InventorYu-Shao Liu
Life of this patent
Estimating the term…
Abstract
A driving integrated circuit (IC) and a fan-out compensation method thereof are provided. The driving IC includes a plurality of driving channel circuits, a plurality of output buffer circuits and a compensation control circuit. The input terminals of the output buffer circuits are coupled to the output terminals of the driving channel circuits in a one-to-one manner. The output terminals of the output buffer circuits are coupled a plurality of data lines of a display panel in a one-to-one manner. The compensation control circuit is coupled to the output buffer circuits for adjusting the slew rate of the output terminals of the output buffer circuits to compensate difference in delay times between the data lines of the display panel.
Claims20
A driving integrated circuit (IC), configured to drive a display panel, comprising:
- a plurality of driving channel circuits;
- a plurality of output buffer circuits, wherein a plurality of input terminals of the output buffer circuits are coupled to a plurality of output terminals of the driving channel circuits in one-to-one manner, a plurality of output terminals of the output buffer circuits are configured to be coupled to a plurality of data lines of the display panel in one-to-one manner;
- and
- a compensation control circuit, coupled to the output buffer circuits for adjusting slew rates of the output terminals of the output buffer circuits to compensate differences in delay times between the data lines of the display panel.
A driving integrated circuit (IC), configured to drive a display panel, comprising:
- a plurality of driving channel circuits;
- a plurality of output buffer circuits, wherein a plurality of input terminals of the output buffer circuits are coupled to a plurality of output terminals of the driving channel circuits in one-to-one manner, and a plurality of output terminals of the output buffer circuits are configured to be coupled to a plurality of data lines of the display panel in one-to-one manner, wherein each of the output buffer circuits has a bias terminal;
- a voltage dividing circuit, comprising a plurality of coupling elements, each coupled between two voltage dividing nodes of a plurality of voltage dividing nodes, wherein the voltage dividing nodes are coupled to the bias terminals of the output buffer circuits respectively;
- and
- a plurality of bias circuits, comprising a first bias circuit for biasing a first voltage dividing node of the voltage dividing nodes to have a first bias voltage and a second bias circuit for biasing a last voltage dividing node of the voltage dividing nodes to have a second bias voltage.
A fan-out compensation method of a driving IC, configured to drive a display panel, wherein the driving IC comprises a plurality of driving channel circuits, a plurality of output buffer circuits and a compensation control circuit, a plurality of input terminals of the output buffer circuits are coupled to a plurality of output terminals of the driving channel circuits in one-to-one manner, and a plurality of output terminals of the output buffer circuits are configured to be coupled to a plurality of data lines of the display panel in one-to-one manner, the fan-out compensation method comprising:
- adjusting slew rates of the output terminals of the output buffer circuits by the compensation control circuit, so as to compensate differences in delay times between the data lines of the display panel.
Dependencies are inferred from the claim text.