Abstract: Provided are a mass transfer device and a mass transfer method. The mass transfer device is provided with multiple channels, a first opening of each channel is arranged on a first surface of the mass transfer device, a second opening of each channel is arranged on a second surface of the mass transfer device, and the distances between the channels are gradually increased along a direction from the first surface to the second surface. In the provided mass transfer method, through a laser irradiation mode, the Micro-LEDs are separated from the first substrate and enter the channels of the mass transfer device through the first openings, and falling into Micro-LED to-be-installed positions on a second substrate through the second openings of the channels, thereby transferring the Micro-LEDs from the first substrate to the second substrate.

Abstract: An LED display, a method for repairing the same, and an LED chip are provided. The LED display includes a planarization layer and a circuit layer. The planarization layer is provided with a first spare electrode and a second spare electrode on an upper surface of the planarization layer. The first spare electrode is coupled with a thin film transistor in the circuit layer and the second spare electrode is coupled with a power line grounding terminal in the circuit layer. The planarization layer defines a groove inside which a diode chip is installed. The groove is provided with a first contact electrode and a second contact electrode at a bottom thereof. Each of two electrodes of the diode chip is coupled with a respective one of the first contact electrode and the second contact electrode.

Abstract: Provided are a mass transfer device and a mass transfer method. The mass transfer device is provided with multiple channels, a first opening of each channel is arranged on a first surface of the mass transfer device, a second opening of each channel is arranged on a second surface of the mass transfer device, and the distances between the channels are gradually increased along a direction from the first surface to the second surface. In the provided mass transfer method, through a laser irradiation mode, the Micro-LEDs are separated from the first substrate and enter the channels of the mass transfer device through the first openings, and falling into Micro-LED to-be-installed positions on a second substrate through the second openings of the channels, thereby transferring the Micro-LEDs from the first substrate to the second substrate.