Operational amplifier, driver and display
AssigneeRenesas Electronics Corporation
InventorKouichi Nishimura
Life of this patent
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Abstract
An operational amplifier includes an input differential stage having one external input receiving an external input voltage and two outputs; and two output stages. A switch section is provided between inputs of the two output stages and the two outputs of the input differential stage, and is configured to alternately connect the two outputs of the input differential stage and inputs of a positive-only output stage of the two output stages; and the two outputs of the input differential stage and inputs of a negative-only output stage of the two output stages.
Claims17
An operational amplifier comprising:
- an input differential stage comprising one external input receiving an external input voltage and two outputs;
- two output stages;
- and
- a switch section provided between inputs of said two output stages and the two outputs of said input differential stage, and configured to alternately connect the two outputs of said input differential stage and inputs of a positive-only output stage of said two output stages;
- and the two outputs of said input differential stage and inputs of a negative-only output stage of said two output stages.
A driver comprising:
- an output section configured to output an output gradation voltage based on display data;
- and
- an operational amplifier configured to receive the output gradation voltage as an external input voltage to output on a data line through said output node,
- wherein said operational amplifier comprises:
- an input differential stage comprising one external input receiving an external input voltage and two outputs;
- two output stages;
- and
- a switch section provided between inputs of said two output stages and the two outputs of said input differential stage, and configured to alternately connect the two outputs of said input differential stage and inputs of a positive-only output stage of said two output stages;
- and the two outputs of said input differential stage and inputs of a negative-only output stage of said two output stages.
A display comprising:
- a display section having a data line;
- a driver connected with said data line,
- wherein said driver comprises:
- an output section configured to output an
- output gradation voltage based on display data;
- and
- an operational amplifier configured to receive the output gradation voltage as an external input voltage to output on a data line through said output node,
- wherein said operational amplifier comprises:
- an input differential stage comprising one external input receiving an external input voltage and two outputs;
- two output stages;
- and
- a switch section provided between inputs of said two output stages and the two outputs of said input differential stage, and configured to alternately connect the two outputs of said input differential stage and inputs of a positive-only output stage of said two output stages;
- and the two outputs of said input differential stage and inputs of a negative-only output stage of said two output stages.
Dependencies are inferred from the claim text.