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US 9,478,583 B2Granted
Wearable display having an array of LEDs on a conformable silicon substrate
AssigneeApple Inc.
InventorsHsin-Hua Hu, Andreas Bibl
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Abstract
A conformable electronic device and methods for forming such devices are described. Embodiments of a conformable electronic device may include a silicon substrate having a thickness of 50 μm or less. An array of LEDs that are electrically coupled to a controller chip may be formed on a surface of the silicon substrate. In an embodiment, a top passivation layer is formed over the array of LEDs, the one or more controller chips, and the top surface of the silicon substrate. An embodiment also includes a bottom passivation layer formed on a bottom surface of the silicon substrate.
Claims12
A conformable electronic device comprising:
- a silicon substrate having a thickness between 5 and 50 μm;
- an array of LEDs and an array of controller chips bonded to a first side of the silicon substrate, wherein each LED is electrically coupled to a controller chip;
- one or more vias formed through the silicon substrate, wherein the one or more vias electrically couple one or more of the controller chips to the second side of the silicon substrate opposite to the first side;
- a first passivation layer formed over the array of LEDs, the array of controller chips, and the first side of the silicon substrate;
- and
- a second passivation layer formed over a second side of the silicon substrate opposite to the first side of the silicon substrate.
3 more elements
Dependencies are inferred from the claim text.