Electronic device display with array of discrete light-emitting diodes
An electronic device may include a display. The display may be formed by an array of light-emitting diodes mounted to the surface of a substrate. The substrate may be a silicon substrate. Circuitry may be located in spaces between the light-emitting diodes. Circuitry may also be located on the rear surface of the silicon substrate and may be coupled to the array of light-emitting diodes using through-silicon vias. The circuitry may include integrated circuits and other components that are attached to the substrate and may include transistors and other circuitry formed within the silicon substrate. Touch sensor electrodes, light sensors, and other components may be located in the spaces between the light-emitting diodes. The substrate may be formed from a transparent material that allows image light to reach a lens and image sensor mounted below the substrate.
1. A display, comprising:
a semiconductor substrate having opposing first and second surfaces;
circuitry formed at least partially within the semiconductor substrate;
an array of light-emitting diodes mounted on the first surface of the semiconductor substrate; and
a touch sensor formed from capacitive touch sensor electrodes that are located in spaces between the light-emitting diodes.
2. The display defined in claim 1 wherein the semiconductor substrate comprises a silicon substrate, the display further comprising:
through-silicon vias that pass through the silicon substrate.
3. The display defined in claim 2 further comprising display control circuitry on the second surface that controls the array of light-emitting diodes using signals that pass through the through-silicon vias.
4. The display defined in claim 1 wherein the semiconductor substrate is non-transparent.