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US 8,427,459 B2Granted
Driving circuit and display device with first and second pairs of amplifiers
AssigneeSamsung Electronics Co., Ltd.
InventorsJun Ho Song, Chul Ho Choi
Life of this patent
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Abstract
A driving circuit includes a pair of first amplifiers and a pair of second amplifiers for amplifying output signal of the first amplifiers. The input signal of any one of the pair of second amplifiers is input by passing through any one of the pair of first amplifiers. The input signal of the other one of the pair of second amplifiers is input by passing through the other one of the pair of first amplifiers.
Claims16
A driving circuit comprising:
- a first selection circuit configured to control paths of a first input signal and a second input signal;
- a pair of first amplifiers, each amplifier of the pair of first amplifiers is configured to amplify and output a corresponding output signal of the first selection circuit;
- a second selection circuit configured to control paths of output signals of the pair of first amplifiers;
- a pair of second amplifiers, each amplifier of the pair of second amplifiers including an operation voltage range included in an operation voltage range of the pair of first amplifiers and configured to amplify and output a corresponding output signal of the second selection circuit;
- and
- a third selection circuit configured to control paths of output signals of the pair of second amplifiers to be output to a first output terminal and a second output terminal,
- wherein an output signal output to the first output terminal is a signal amplified by any one of the pair of first amplifiers, and an output signal output to the second output terminal is a signal amplified by the other one of the pair of first amplifiers, and
- wherein an operation voltage range of each of the pair of first amplifiers corresponds to an operation voltage range of the driving circuit, and an operation voltage range of each of the pair of second amplifiers is smaller than the operation voltage range of the driving circuit.
5 more elements
A driving circuit comprising:
- a first rail to rail amplifier including a first input amplifier and a first output amplifier;
- a second rail to rail amplifier including a second input amplifier and a second output amplifier;
- a first selection circuit configured to control paths of a first input signal and a second input signal input to the first input amplifier and the second input amplifier;
- a second selection circuit configured to control paths of output signals of the first input amplifier and the second input amplifier;
- and
- a third selection circuit configured to control paths of output signals of the first output amplifier and the second output amplifier to be output to a first output terminal and a second output terminal,
- wherein an output signal output to the first output terminal is a signal amplified by the first input amplifier, and an output signal output to the second output terminal is a signal amplified by the second input amplifier, and
- wherein an operation voltage range of each of the first and second input amplifiers corresponds to an operation voltage range of the driving circuit, and an operation voltage range of each of the first and second output amplifiers is smaller than of the operation voltage range of the driving circuit.
5 more elements
A driving circuit comprising:
- a pair of first amplifiers configured to selectively amplify a first input signal and a second input signal;
- a pair of second amplifiers, each of the pair of second amplifiers including an operation voltage range included in an operation voltage range of the pair of first amplifiers, the pair of second amplifiers being configured to selectively amplify an output of the pair of first amplifiers,
- wherein the offset voltage of the driving circuit is equal to an offset voltage of a first of the second amplifiers minus an offset voltage of a second of the second amplifiers.
Dependencies are inferred from the claim text.