Source driver and polarity inversion control circuit
AssigneeHimax Technologies Limited
InventorsSiangwei Wang, Hung-Yu Huang
Life of this patent
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Abstract
A source driver and a polarity inversion control circuit are provided. The source driver includes a plurality of channel pairs and the polarity inversion control circuit. The polarity inversion control circuit includes a signal generating circuit and a routing circuit. The signal generating circuit generates a polarity control signal. The routing circuit outputs a plurality of switching control signals corresponding to the polarity control signal to a plurality of output switching circuits of the channel pairs. The routing circuit changes the correspondence between the polarity control signal and the switching control signals according to a polarity inversion configuration signal.
Claims19
A source driver, comprising:
- a plurality of channel pairs, adapted to drive a display panel, wherein each of the channel pairs comprises a positive polarity channel, a negative polarity channel, and an output switching circuit, a first input terminal and a second input terminal of the output switching circuit are respectively coupled to an output terminal of the positive polarity channel and an output terminal of the negative polarity channel, and a first output terminal and a second output terminal of the output switching circuit are coupled to the display panel;
- and
- a polarity inversion control circuit, comprising:
- a signal generating circuit, configured to generate a polarity control signal;
- and
- a routing circuit, coupled to the signal generating circuit to receive the polarity control signal, and configured to output a plurality of switching control signals corresponding to the polarity control signal to the output switching circuits, wherein the routing circuit changes a logic configuration of the switching control signals to change a correspondence between the polarity control signal and the switching control signals according to a polarity inversion configuration signal.
A polarity inversion control circuit, comprising:
- a signal generating circuit, configured to generate a polarity control signal;
- and
- a routing circuit, coupled to the signal generating circuit to receive the polarity control signal, and configured to output a plurality of switching control signals corresponding to the polarity control signal to a plurality of output switching circuits of a plurality of channel pairs of a source driver, wherein the routing circuit changes a logic configuration of the switching control signals to change a correspondence between the polarity control signal and the switching control signals according to a polarity inversion configuration signal.
Dependencies are inferred from the claim text.