Display device and method of driving the same
AssigneeSamsung Display Co., Ltd.
InventorsChul Kyu Kang, Sang Moo Choi, Soo Hee Oh, Dongsun Lee
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Abstract
A display device includes a scan driver configured to provide a scan signal to the scan line, the scan signal having an ON voltage for turning on a transistor in a plurality of horizontal periods including a current horizontal period and at least one previous horizontal period corresponding to the scan signal, and a grayscale data processor configured to correct current grayscale data of a current pixel corresponding to the current horizontal period to generate correction grayscale data based on previous grayscale data of a previous pixel corresponding to the previous horizontal period, the current pixel included in a same pixel column as the previous pixel.
Claims18
A display device comprising:
- a display panel comprising a pixel which comprises an organic light emitting diode and a plurality of transistors connected to a scan line, a data line and an emission control line and driving the organic light emitting diode;
- a scan driver configured to provide a scan signal to the scan line, the scan signal having an ON voltage for turning on a transistor in a plurality of horizontal periods including a current horizontal period and at least one previous horizontal period corresponding to the scan signal;
- a grayscale data processor configured to correct current grayscale data of a current pixel corresponding to the current horizontal period to generate correction grayscale data based on previous grayscale data of a previous pixel corresponding to the previous horizontal period, the current pixel included in a same pixel column as the previous pixel;
- and
- a data driver configured to convert the correction grayscale data to a data voltage and to provide the data voltage to the data line,
- wherein, during one frame, an n-th scan signal, where ‘n’ is a natural number, has a scan ON voltage in an n-th horizontal period and at least one (n−k)-th horizontal period, where ‘k’ is an even number which is equal to or more than 2.
A method of driving a display device which comprises a pixel which comprises an organic light emitting diode and a plurality of transistors connected to a scan line, a data line and an emission control line and driving the organic light emitting diode, the method comprising:
- providing a scan signal to the scan line, the scan signal having an ON voltage for turning on a transistor in a plurality of horizontal periods including a current horizontal period and at least one previous horizontal period corresponding to the scan signal;
- correcting current grayscale data of a current pixel corresponding to the current horizontal period to generate correction grayscale data based on previous grayscale data of a previous pixel corresponding to the previous horizontal period, the current pixel included in a same pixel column as the previous pixel;
- and
- converting the correction grayscale data to a data voltage to provide to the data line,
- wherein, during one frame, an n-th scan signal, where ‘n’ is a natural number, has a scan ON voltage in an n-th horizontal period and at least one (n−k)-th horizontal period, where ‘k’ is an even number which is equal to or more than 2.
A method of driving a display device which comprises a pixel which comprises an organic light emitting diode and a plurality of transistors connected to a scan line, a data line and an emission control line and driving the organic light emitting diode, the method comprising:
- determining whether an image signal is an image signal of an odd numbered frame or an even numbered frame;
- providing a scan signal to the scan line, the scan signal having an ON voltage for turning on a transistor in a plurality of horizontal periods including a current horizontal period and at least one previous horizontal period corresponding to the scan signal;
- correcting current grayscale data of a current pixel corresponding to the current horizontal period to generate correction grayscale data based on previous grayscale data of a previous pixel corresponding to the previous horizontal period, the current pixel included in a same pixel column as the previous pixel when the image signal is the image signal of the odd numbered frame;
- and
- converting the correction grayscale data of the odd numbered frame to a data voltage to provide to the data line.
A method of driving a display device which comprises a pixel which comprises an organic light emitting diode and a plurality of transistors connected to a scan line, a data line and an emission control line and driving the organic light emitting diode, the method comprising:
- determining whether an image signal is a static image signal or a dynamic image signal;
- providing a scan signal to the scan line, the scan signal having an ON voltage for turning on a transistor in a plurality of horizontal periods including a current horizontal period and at least one previous horizontal period corresponding to the scan signal;
- correcting current grayscale data of a current pixel corresponding to the current horizontal period to generate correction grayscale data based on previous grayscale data of a previous pixel corresponding to the previous horizontal period, the current pixel included in a same pixel column as the previous pixel when the image signal is the static image signal;
- and
- converting the correction grayscale data of the static image signal to a data voltage to provide to the data line.
Dependencies are inferred from the claim text.