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US 2022/0013688 A1Published application
Led with internally confined current injection area
AssigneeApple Inc.
InventorsKelly McGroddy, Hsin-Hua Hu, Andreas Bibl, Clayton Ka Tsun Chan, Daniel Arthur Haeger
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Abstract
Methods and structures for forming arrays of LED devices are disclosed. The LED devices in accordance with embodiments of the invention may include an internally confined current injection area to reduce non-radiative recombination due to edge effects. Several manners for confining current may include etch removal of a current distribution layer, etch removal of a current distribution layer and active layer followed by mesa re-growth, isolation by ion implant or diffusion, quantum well intermixing, and oxide isolation.
Claims21
(canceled)
A display structure comprising:
- a display substrate;
- a bottom electrode over the display substrate;
- a light emitting diode (LED) device bonded to the bottom electrode, wherein the LED device comprises:
- a top current spreading layer doped with a first dopant type;
- a bottom current spreading layer doped with a second dopant type;
- an active layer between the top current spreading layer and the bottom current spreading layer;
- and
- a semiconductor confinement barrier laterally surrounding the bottom current spreading layer and the active layer.
5 more elements
Dependencies are inferred from the claim text.