Display device and driving method thereof
AssigneeSamsung Display Co., Ltd.
InventorBaek-Woon Lee
Life of this patent
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Abstract
A display device includes: a light emitting element; a driving transistor connected to the light emitting element, the driving transistor generating a current according to a data voltage; a switching transistor switching the data voltage according to a gate signal; a capacitor storing the data voltage; a data line connected to the switching transistor, the data line transmitting the data voltage; and a gate line connected to the switching transistor, the gate line transmitting the gate signal. The data voltage includes a first voltage corresponding to luminance information and a second voltage that is a modified voltage of the first data voltage, wherein an average of the first voltage and the second voltage over time is substantially constant.
Claims20
A display device comprising:
- a light emitting element;
- a driving transistor connected to the light emitting element, the driving transistor generating a current according to a data voltage fed thereto;
- a switching transistor switching the data voltage according to a gate signal fed thereto;
- a capacitor storing the data voltage;
- a data line connected to the switching transistor, the data line transmitting the data voltage;
- and
- a gate line connected to the switching transistor, the gate line transmitting the gate signal,
- wherein the data voltage comprises
- a first voltage corresponding to luminance information, and
- a second voltage that is a modified voltage of the first data voltage,
- wherein an average of the first voltage and the second voltage over time is substantially constant.
A display device comprising:
- a plurality of pixels having luminance according to data voltages and including a plurality of switching transistors switching the data voltages according to gate signals fed thereto;
- a plurality of data lines respectively connected to the plurality of switching transistors and transmitting the data voltages;
- a plurality of gate lines respectively connected to the plurality of switching transistors and transmitting the gate signals;
- a data driver converting output image signals into the data voltages and applying the data voltages to the plurality of data lines;
- a gate driver applying the gate signals to the plurality of gate lines;
- and
- a signal controller that processes input image signals to generate modified image signals and outputting pairs of the input image signal and the modified image signal as the output image signals,
- wherein each of the data voltages comprises a pair of
- a first voltage corresponding to an input image signal, and
- a second voltage corresponding to a modified image signal,
- wherein an average of the first voltage and the second voltage is substantially constant over time.
A driving method of a display device that includes a plurality of pixels including a plurality of switching transistors and a plurality of data lines connected to the plurality of switching transistors, the method comprising:
- processing an input image signal for each pixel to generate a modified image signal;
- converting the input image signal into a first voltage;
- converting the modified image signal into a second voltage;
- applying the first voltage to a data line for a first time period;
- and
- applying the second voltage to the data line for a second time period,
- wherein an average of the first voltage and the second voltage over time for each of the data lines is substantially constant.
Dependencies are inferred from the claim text.