Frequency variable display apparatus

A frequency variable display apparatus, comprising:

• a display panel including a plurality of subpixels, each including:
• a driving transistor including a gate electrode connected to a first node, a drain electrode connected to a high-level source voltage, and a source electrode connected to a second node;
• a first switch transistor configured to connect the first node to a data line based on a scan signal, the data line being configured to receive a data voltage;
• a second switch transistor configured to connect the second node to a reference voltage line based on a sense signal, the reference voltage line configured to receive an initialization voltage;
• a storage capacitor connected between the first node and the second node;
• and
• a light emitting element including an anode electrode connected to the second node and a cathode electrode connected to a low-level source voltage;
• and
• a gate driver configured to supply the scan signal to a scan gate line connected to a gate electrode of the first switch transistor and to supply the sense signal to a sense gate line connected to a gate electrode of the second switch transistor,
• wherein, in one frame period with the display panel driven at a frame frequency lower than a predetermined maximum frame frequency within a variable frame frequency range, the scan signal supplied to one of the subpixels has one gate on period, and the sense signal supplied to the one of the subpixels has two or more gate on periods.

A display apparatus, comprising:

• a display panel configured to be driven at a variable frame frequency within a frequency range, display panel comprising a subpixel including:
• a driving transistor having a gate electrode connected to a first node and a first electrode connected to a second node;
• a first switch transistor having a gate electrode connected to a scan gate line, a first electrode connected to a data line configured to receive a data voltage, and a second electrode connected to the first node;
• a second switch transistor having a gate electrode connected to a sense gate line, a first electrode connected to a reference voltage line configured to receive an initialization voltage, and second electrode connected to the second node;
• and
• a light emitting element connected to the second node;
• a data driver configured to provide the data voltage to the data line;
• and
• a gate driver configured to provide a scan signal to the scan gate line and to provide a sense signal to the sense gate line,
• wherein, during an nth frame (n being a natural number) with the display panel driven at a frame frequency lower than a predetermined maximum frame frequency within the frequency range, the scan signal has one gate on period, and the sense signal has two or more gate on periods.