Display device including a light-emitting element

A display device comprising:

• a display panel comprising data lines, sensing lines, and pixels connected to the data lines and the sensing lines and comprising a light-emitting element;
• and
• a panel driver configured to provide a scan signal and a sensing signal to the pixels, to provide data voltages to the pixels through the data lines, to provide a positive initialization voltage to an anode of the light-emitting element through the sensing lines, to provide a first power supply voltage, and to provide a negative second power supply voltage to a cathode of the light-emitting element,
• wherein the light-emitting element is configured to be initialized based on the initialization voltage and the second power supply voltage, and
• wherein the panel driver comprises:
• a controller configured to generate a positive voltage enable signal and a negative voltage enable signal;
• a first voltage generator configured to generate the first power supply voltage, which is positive, based on a first input voltage;
• a second voltage generator configured to generate the second power supply voltage, which is negative, based on the first input voltage, and to provide the second power supply voltage to a second power supply voltage line in response to the negative voltage enable signal;
• and
• a power management circuit comprising:
• an initialization voltage generator configured to generate the initialization voltage based on a second input voltage;
• and
• a positive voltage generator configured to generate a positive voltage, and to provide the positive voltage to the second power supply voltage line in response to the positive voltage enable signal.

An electronic device comprising a display device comprising:

• a display panel comprising data lines, sensing lines, and pixels connected to the data lines and the sensing lines and comprising a light-emitting element;
• and
• a panel driver configured to provide a scan signal and a sensing signal to the pixels, to provide data voltages to the pixels through the data lines, to provide an initialization voltage to an anode of the light-emitting element through the sensing lines, to provide a first power supply voltage to the pixels, and to provide a second power supply voltage to a cathode of the light-emitting element of the pixels,
• wherein the light-emitting element is configured to be initialized based on a voltage difference between the initialization voltage and the second power supply voltage being less than a turn-on voltage of the light-emitting element by a margin voltage, and
• wherein the panel driver comprises:
• a controller configured to generate a positive voltage enable signal and a negative voltage enable signal;
• a first voltage generator configured to generate the first power supply voltage, which is positive, based on a first input voltage;
• a second voltage generator configured to generate the second power supply voltage, which is negative, based on the first input voltage, and to provide the second power supply voltage to a second power supply voltage line in response to the negative voltage enable signal;
• and
• a power management circuit comprising:
• an initialization voltage generator configured to generate the initialization voltage based on a second input voltage;
• and
• a positive voltage generator configured to generate a positive voltage, and to provide the positive voltage to the second power supply voltage line in response to the positive voltage enable signal.