There is provided a method of forming an active matrix display, the method comprising providing a backplane comprising: a backplane substrate, a semiconductor particle formed separately from the backplane substrate and then fixed upon the backplane substrate at a predetermined position, the semiconductor particle planarized to remove portions of the semiconductor particle and to expose at a cross-section of the semiconductor particle a planar surface, and a controllable gated electronic component on or directly beneath the planar surface. The method also comprises providing an LED emitter comprising one or more LEDs electrically connected to the backplane such that at least one of the LEDs is electrically connected to the controllable gated electronic component.