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US 10,950,197 B2Granted
Data driver, display device having the same, and method of driving the display device
AssigneeSamsung Display Co., Ltd.
InventorsKihyun Pyun, Keunoh Kang, Moonshik Kang, Gwangsoo Ahn, Dae-sik Lee
Life of this patent
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Abstract
A data driver of a display device includes an equalizer and an equalizer controller. The equalizer controller calculates a lock time during a training enable signal is in an active state while sequentially changing a set signal applied to the equalizer to one option code selected from among a plurality of option codes and provides an option code corresponding to a set lock time among the option codes to the equalizer as the set signal.
Claims20
A data driver comprising:
- an equalizer to output an equalizer output signal in response to a transmission signal and a set signal;
- a clock and data recovery circuit to recover a clock signal and a data signal based on the equalizer output signal;
- a lock detector to output a lock signal based on the equalizer output signal and the clock signal;
- a reset detector to detect a training pattern included in the transmission signal to output a reset signal;
- a training control circuit to output a training enable signal;
- and
- an equalizer controller to output the set signal based on the lock signal, the reset signal, and the training enable signal, wherein the equalizer controller is to calculate a lock time during an active state of the training enable signal while sequentially changing the set signal applied to the equalizer to one option code selected from among a plurality of option codes and to provide an option code corresponding to a set lock time selected from among the plurality of option codes to the equalizer as the set signal when the training enable signal is deactivated.
4 more elements
A display device comprising:
- a display panel comprising a plurality of gate lines, a plurality of data lines, and a plurality of pixels, each pixel of the plurality of pixels being connected to a corresponding gate line selected from among the plurality of gate lines and a corresponding data line of the data lines;
- a gate driver to drive the gate lines;
- a data driver to drive the data lines;
- and
- a timing controller to control the gate driver and the data driver in response to a control signal and an image signal, and to convert the image signal and the control signal to a transmission signal, and to transmit the transmission signal to the data driver, the data driver comprising:
- an equalizer to output an equalizer output signal in response to the transmission signal and a set signal;
- a clock and data recovery circuit to recover a clock signal and a data signal based on the equalizer output signal;
- a lock detector to output a lock signal based on the equalizer output signal and the clock signal;
- a reset detector to detect a training pattern included in the transmission signal to output a reset signal;
- a training control circuit to output a training enable signal;
- and
- an equalizer controller to output the set signal based on the lock signal, the reset signal, and the training enable signal, wherein the equalizer controller is to calculate a lock time during an active state of the training enable signal while sequentially changing the set signal applied to the equalizer to one option code of a plurality of option codes and to provide an option code corresponding to a set lock time selected from among the plurality of option codes to the equalizer as the set signal when the training enable signal is deactivated.
9 more elements
A method of driving a display device, the method comprising:
- activating a training enable signal;
- initializing a set signal of an equalizer to one of a plurality of option codes;
- recovering a clock signal based on an equalizer output signal output from the equalizer;
- sequentially changing the set signal to one of the plurality of option codes to calculate a lock time of the clock signal corresponding to the option codes;
- and
- outputting an option code having a lowest lock time selected from among the plurality of option codes as the set signal.
3 more elements
Dependencies are inferred from the claim text.