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US 2016/0111046 A1Published application
Organic light emitting display device and driving method thereof
AssigneeLG Display Co., Ltd.
InventorSeung Tae Kim
Life of this patent
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Abstract
Disclosed is an organic light emitting display device including: plurality of data lines; a charging line formed in a direction crossing the plurality of data lines; and charging switches connected between the charging line and the data lines. The charging line inputs a charging voltage and the charging switches are individually controlled in data line.
Claims13
A method of an organic light emitting display device, the method comprising:
- detecting the polarity of a data signal by comparing the data signal with a reference data;
- temporarily storing the detected polarity of the data signal;
- determining whether or not to perform a pre-charging and a charge-sharing through a comparison of the detected polarity of the Nth period and the detected polarity of the N-1th period;
- if the pre-charging and the charge-sharing is to be performed, determining a pre-charge voltage based on the reference data, the detected polarity of the Nth period, and the comparison of the detected polarity of the Nth period and the detected polarity of the N-1th period;
- outputting a charging operation control signal generated on the basis of the comparison;
- and
- performing the pre-charging and the charge-sharing in a data line on the basis of the charging operation control signal.
4 more elements
An apparatus comprising:
- a detector to detect a polarity of a data signal by comparing said data signal with a reference data;
- a comparator to compare said detected polarity and a previously stored polarity of said data signal;
- a determiner that determines a pre-charge voltage based on the reference data, the detected polarity, and a comparison between the detected polarity and the previously stored polarity of said data signal;
- and
- a controller to selectively perform pre-charging and charge-sharing based on said compared polarity and the determined pre-charge voltage, wherein said pre-charging and charge-sharing are performed only when said detected and stored polarities are different from each other, which results in less power consumption compared to when pre-charging and charge-sharing are performed otherwise.
2 more elements
Dependencies are inferred from the claim text.