Electroluminescent display apparatus
AssigneeLG Display Co., Ltd.
InventorsSeok Hyun HONG, Sang Yun KIM, Jae Yoon BAE
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Abstract
An electroluminescent display apparatus may include a pixel including a driving element having a gate electrode connected to a data line and a source electrode connected to a reference voltage line and a pixel driving circuit applying a sensing data voltage to the gate electrode of the driving element through the data line, detecting a source electrode voltage of the driving element, shifted from a sensing reference voltage based on the sensing data voltage, through the reference voltage line to obtain a detection voltage, calculating an offset voltage based on the detection voltage, and lowering a level of the sensing data voltage based on the offset voltage, in a plurality of vertical blank periods.
Claims10
An electroluminescent display apparatus comprising:
- a pixel including a driving element including a gate electrode connected to a data line and a source electrode connected to a reference voltage line;
- and
- a pixel driving circuit for applying an nth (where n is a natural number of 2 or more) sensing data voltage to the gate electrode of the driving element through the data line, storing a source electrode voltage of the driving element, shifted from a sensing reference voltage based on the nth sensing data voltage, as an nth offset voltage, and calculating an nth detection voltage, which is lowered by the nth offset voltage, from the nth sensing data voltage,
- wherein:
- the pixel driving circuit is configured to apply an n−1th sensing data voltage to the gate electrode of the driving element in a vertical blank period of an n−1th frame preceding an nth frame;
- and
- the nth sensing data voltage is lower than the n−1th sensing data voltage.
Dependencies are inferred from the claim text.