Patent · US Active

Elastomeric layer fabrication for light emitting diodes

US10269781B1 · kind B1 · utility

1Cited by

1References

20Claims

0Family size

Assignee

Facebook Technologies, LLC · US

Inventors

Daniel Brodoceanu · Cork, IE
Oscar Torrents Abad · Riegelsberg, DE

Key dates

Filing date	Oct 18, 2018
Grant date	Apr 23, 2019
Priority date	—
Expiry date	Oct 18, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH10H20/824
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An elastomeric interface layer (elayer) is formed over multiple light emitting diode (LED) dies by depositing photoresist materials across multiple LED dies, and using the LED dies as a photolithography mask to facilitate formation of the elayer on each LED die. The elayer facilitates adhesive attachment of each LED die with a pick and place head (PPH), allowing the LED dies to be picked up and placed onto a display substrate including control circuits for sub-pixels of an electronic display. In some embodiments, the LED dies are micro-LED (μLED) dies.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.