Micro LED display device

A micro-LED display device comprising:

• a display panel including:
• a plurality of pixel circuits for driving a plurality of micro-LEDs;
• and
• a micro-driver configured to control an operation of each of the plurality of pixel circuits,
• first to 16th row cathode electrodes extending in a row direction of the display panel and spaced from each by a predefined spacing in a column direction,
• wherein the micro-driver between a column-directional arrangement of the first to 8th row cathode electrodes and a column-directional arrangement of the ninth to 16th row cathode electrodes,
• further comprising a power management circuit configured to manage a level of a bias voltage so that a gap voltage as a difference between a negative voltage and the bias voltage used to selectively drive one of the plurality of micro-LEDs is maintained at a value lower than a threshold voltage of each of the plurality of micro-LEDs,
• wherein the power management circuit is configured to generate the bias voltage based on a negative feedback voltage fed back from the display panel and a gap setting signal corresponding to the gap voltage.

A micro-LED display device comprising:

• a display panel including:
• a plurality of pixel circuits configured to drive a plurality of micro-LEDs;
• and
• a micro-driver configured to control an operation of each of the plurality of pixel circuits,
• wherein each of the plurality of pixel circuits includes:
• a driving transistor configured to supply a power voltage in response to a gate driving voltage;
• a first transistor configured to constitute a current path together with the driving transistor in response to a light-emission signal;
• first to eighth micro-LEDs, each having an anode electrode connected to the first transistor;
• and
• a switch circuit configured to selectively connect each of cathode electrodes of the first to eighth micro-LEDs to a power line for a negative voltage or a bias voltage,
• further comprising:
• a power management circuit configured to manage a level of the bias voltage so that a gap voltage as a difference between the negative voltage and the bias voltage is maintained at a value lower than a threshold voltage of each of the plurality of micro-LEDs,
• wherein the power management circuit is configured to generate the bias voltage based on a negative feedback voltage fed back from the display panel and a gap setting signal corresponding to the gap voltage.