Pixel circuit, driving method thereof, and display apparatus
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United States of America Patent
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Jan 30, 2018
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N/A
app pub date -
Oct 12, 2015
filing date -
May 28, 2015
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Abstract
Disclosed are a pixel Circuit, a driving method thereof, and a display apparatus. The pixel circuit comprises a driving transistor, a capacitor connected between the source and the gate of the driving transistor, a light-emitting element, a light-emitting control module, a data writing module and a compensating module. By cooperation among the various modules, the drift of the threshold voltage of the driving transistor can be compensated. Accordingly, the driving current which is provided by the driving transistor to drive the light-emitting element to emit light only relates to the voltage of the data signal and the reference signal, while does not relate to the threshold voltage of the driving transistor and the first reference voltage source, and thus the effect on the current flowing through the light-emitting element raised due to the threshold voltage and due to the IR drop can be avoided. The operating current which drives the light-emitting element to emit lights can remain uniform, thereby improving the uniformity of the image luminance of the whole display area of the display apparatus.
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