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US 12,002,395 B2Granted
Display apparatus and method of driving the same
AssigneeSamsung Display Co., Ltd.
InventorSeokha Hong
Life of this patent
Estimating the term…
Abstract
A display apparatus includes a plurality of display panels, a current sensor, a driving controller and a data driver. The current sensor is configured to sense a current of each of the display panels. The driving controller is configured to generate a compensation value of each of the display panels based on the current of each of the display panels and to generate a data signal of each of the display panels based on the compensation value. The data driver is configured to convert the data signal into a data voltage and to output the data voltage to each of the display panels.
Claims15
A display apparatus comprising:
- a plurality of display panels;
- a current sensor configured to sense a current of each of the display panels;
- a driving controller configured to generate a compensation value of each of the display panels based on the current of each of the display panels and to generate a data signal of each of the display panels based on the compensation value;
- a data driver configured to convert the data signal into a data voltage and to output the data voltage to each of the display panels;
- a switch including a first end connected to the current sensor and a second end directly connected to the display panel to sense the current of the display panel;
- a first power supply line configured to supply a power to a first display panel of the display panels;
- a first switch connected to the first power supply line;
- a second power supply line configured to supply a power to a second display panel of the display panels;
- a second switch connected to the second power supply line;
- a third power supply line configured to supply a power to a third display panel of the display panels;
- a third switch connected to the third power supply line;
- a fourth power supply line configured to supply a power to a fourth display panel of the display panels;
- and
- a fourth switch connected to the fourth power supply line,
- wherein the first switch, the second switch, the third switch and the fourth switch are turned on in a non-sensing period,
- wherein the first switch is turned off and the second switch, the third switch and the fourth switch are turned on in a first duration of a sensing period,
- wherein the second switch is turned off and the first switch, the third switch and the fourth switch are turned on in a second duration of the sensing period,
- wherein the third switch is turned off and the first switch, the second switch and the fourth switch are turned on in a third duration of the sensing period,
- wherein the fourth switch is turned off and the first switch, the second switch and the third switch are turned on in a fourth duration of the sensing period, and
- wherein the first, second, third, and fourth durations of the sensing period are contiguous periods that abut each other such that a beginning of the second duration abuts an end of the first duration, a beginning of the third duration abuts an end of the second duration, and a beginning of the fourth duration abuts an end of the third duration.
17 more elements
A method of driving a display apparatus including a plurality of display panels, the method comprising:
- sensing a current of each of the display panels;
- generating a compensation value of each of the display panels based on the current of each of the display panels;
- generating a data signal of each of the display panels based on the compensation value;
- converting the data signal into a data voltage;
- and
- outputting the data voltage to each of the display panels,
- wherein the display apparatus further comprises:
- a switch including a first end connected to a current sensor and a second end directly connected to the display panel to sense the current of the display panel;
- a first power supply line configured to supply a power to a first display panel of the display panels;
- a first switch connected to the first power supply line;
- a second power supply line configured to supply a power to a second display panel of the display panels;
- a second switch connected to the second power supply line;
- a third power supply line configured to supply a power to a third display panel of the display panels;
- a third switch connected to the third power supply line;
- a fourth power supply line configured to supply a power to a fourth display panel of the display panels;
- and
- a fourth switch connected to the fourth power supply line,
- wherein the first switch, the second switch, the third switch and the fourth switch are turned on in a non-sensing period,
- wherein the first switch is turned off and the second switch, the third switch and the fourth switch are turned on in a first duration of a sensing period,
- wherein the second switch is turned off and the first switch, the third switch and the fourth switch are turned on in a second duration of the sensing period,
- wherein the third switch is turned off and the first switch, the second switch and the fourth switch are turned on in a third duration of the sensing period, and
- wherein the fourth switch is turned off and the first switch, the second switch and the third switch are turned on in a fourth duration of the sensing period, and
- wherein the first, second, third, and fourth durations of the sensing period are contiguous periods that abut each other such that a beginning of the second duration abuts an end of the first duration, a beginning of the third duration abuts an end of the second duration, and a beginning of the fourth duration abuts an end of the third duration.
20 more elements
Dependencies are inferred from the claim text.