Display driving apparatus and method for driving display driving apparatus, and display apparatus and method for driving display apparatus

A display apparatus, comprising:

• a light-emitting element for emitting light with a gradation level depending on supplied current;
• a pixel driving circuit for supplying the current to the light-emitting element depending on a voltage applied via a data line;
• a precharge voltage source for applying a predetermined precharge voltage to the pixel driving circuit via the data line;
• a voltage reader for reading, after the application of the precharge voltage by the precharge voltage source, the voltage of the data line after a predetermined transient response period;
• and
• a compensated gradation data signal generator for generating, based on the read voltage of the data line and a voltage retained in the pixel driving circuit, a compensated gradation data signal having a voltage value corresponding to an voltage characteristic unique to the pixel driving circuit to apply the compensated gradation data signal to the pixel driving circuit.

A method for driving a display apparatus, comprising:

• applying a predetermined precharge voltage to a pixel driving circuit via a data line;
• reading, after the application of the precharge voltage, the voltage of the data line after a predetermined transient response period which is shorter than a time during which the voltage of the data line converges to a converge voltage value unique to the pixel driving circuit;
• generating, based on one of:
• (i) the read voltage of the data line and (ii) the read voltage of the data line and a voltage retained in the pixel driving circuit, a compensated gradation data signal having a voltage value corresponding to an element characteristic unique to the pixel driving circuit;
• applying the generated compensated gradation data signal to the pixel driving circuit;
• and
• supplying current depending on a voltage applied via the data line from the pixel driving circuit to a light-emitting element.

A display driving apparatus, comprising:

• a precharge voltage source for applying, via a data line, a predetermined precharge voltage to a pixel driving circuit connected to a light-emitting element;
• a voltage reader for reading, after the application of the precharge voltage by the precharge voltage source, the voltage of the data line after a predetermined transient response period;
• and
• a compensated gradation data signal generator for applying, based on one of:
• (i) the read voltage of the data line and (ii) the read voltage of the data line and a voltage retained in the pixel driving circuit, a compensated gradation data signal having a voltage value corresponding to an element characteristic unique to the pixel driving circuit to apply the compensated gradation data signal to the pixel driving circuit.

A method for driving a display driving apparatus, comprising:

• applying a predetermined precharge voltage to a pixel driving circuit via a data line;
• reading, after the application of the precharge voltage, the voltage of the data line after a predetermined transient response period;
• generating, based on one of:
• (i) the read voltage of the data line and (ii) the read voltage of the data line and a voltage retained in the pixel driving circuit, a compensated gradation data signal having a voltage value corresponding to an element characteristic unique to the pixel driving circuit;
• and
• applying the generated compensated gradation data signal to the pixel driving circuit.