Electroluminescence display apparatus

An electroluminescence display device comprising:

• a plurality of sub-pixels, each of the plurality of sub-pixels including:
• a Node-A electrically connected to an electrode of a storage capacitor and a gate electrode of a P-type driving transistor;
• an N-type switching transistor configured to switch an electrical connection between a Node-B electrically connected to a data line and the Node-A;
• a Node-C configured to supply an ELVDD voltage and electrically connected to another electrode of the storage capacitor and a first electrode of the P-type driving transistor;
• a Node-D configured to supply current to an electroluminescence diode and electrically connected to a second electrode of the P-type driving transistor;
• a first transistor configured to switch an electrical connection between the Node-A and the Node-D;
• and
• a driving unit electrically connected to the data line and configured to store a first threshold voltage of the P-type driving transistor and a second threshold voltage of the N-type switching transistor,
• wherein each of the plurality of sub-pixels is configured to compensate the first threshold voltage deviation of the P-type driving transistor and the second threshold voltage deviation of the N-type switching transistor based on a voltage at the Node-A,
• wherein the driving unit is configured to selectively supply an image signal to the data line or sense a voltage of the data line,
• wherein the driving unit is configured to sequentially sense the first threshold voltage and the second threshold voltage by sequentially sensing the voltages of the Node-A and the Node-B through the data line, and
• wherein the N-type switching transistor is turned off between sensing of the first threshold voltage of the P-type driving transistor and sensing of the second threshold voltage of the N-type switching transistor.