| CPC G09G 3/32 (2013.01) [G09G 2310/061 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0209 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/064 (2013.01)] | 13 Claims |
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1. A display apparatus comprising:
a display panel comprising:
a pixel array comprising pixels arranged in in a plurality of row lines, each of the pixels comprising a plurality of inorganic light emitting elements, and
sub pixel circuits corresponding to inorganic light emitting elements of the pixel array;
a driving circuit configured to set an image data voltage sequentially to the sub pixel circuits based on a first driving voltage, and drive the sub pixel circuits so that a driving current corresponding to the set image data voltage is provided sequentially to the inorganic light emitting elements of the pixel array based on a second driving voltage;
a sensing circuit configured to sense a current flowing through a driving transistor included in each of the sub pixel circuits based on a specific voltage which is applied to the sub pixel circuits, and output sensing data corresponding to the sensed current; and
a correction circuit configured to correct an image data voltage to be applied to each of the sub pixel circuits based on the sensing data,
wherein the first driving voltage and the second driving voltage are applied to the sub pixel circuits through a first wiring and a second wiring, respectively, the first wiring and the second wiring being separate wirings,
wherein the sub pixel circuits are driven in an order of a data setting period and a plurality of light emitting periods for each of the plurality of row lines,
wherein the driving circuit is further configured to:
set the image data voltage to sub pixel circuits of a row line among the plurality of row lines in the data setting period, and
drive the sub pixel circuits of the row line so that the driving current is provided to inorganic light emitting elements of the row line, in each of the plurality of light emitting periods,
wherein the driving transistor comprises a first driving transistor and a second driving transistor,
wherein each of the sub pixel circuits comprises:
a constant current generator circuit which comprises the first driving transistor, the constant current generator being configured to provide the driving current of a magnitude corresponding to a voltage difference between a source terminal and a gate terminal of the first driving transistor, to a corresponding inorganic light emitting element through the first driving transistor; and
a pulse width modulation (PWM) circuit which comprises the second driving transistor, the PWM circuit being configured to control a time at which the driving current is provided to the corresponding inorganic light emitting element based on a voltage difference between the source terminal and the gate terminal of the second driving transistor,
wherein the image data voltage comprises a constant current generator data voltage and a PWM data voltage, and
wherein the driving circuit is further configured to set the constant current generator data voltage and the PWM data voltage, respectively, to the gate terminal of the first driving transistor and the second driving transistor during the data setting period.
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