Patent ID: 11894350
Assignee: ELUX, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A micro-light emitting diode (microLED) mass transfer stamping system comprising:
a stamp substrate with a top surface;
an array of stamp substrate trap sites formed on the top surface having a pitch separating adjacent trap sites, each trap site configured as a columnar-shaped recess to temporarily secure a keel extended from a bottom surface of a microLED;
a first fluidic assembly carrier substrate comprising:
a planar top surface;
an array of wells formed in the carrier substrate top surface having a pitch separating adjacent wells matching the pitch separating the stamp substrate trap sites.

a second fluidic assembly carrier substrate comprising:
a planar top surface;
an array of wells formed in the carrier substrate top surface having a pitch separating adjacent wells matching the pitch separating the stamp substrate trap sites;

a third fluidic assembly carrier substrate comprising;
a planar top surface; and,
an array of wells formed in the carrier substrate top surface having a pitch separating adjacent wells matching the pitch separating the stamp substrate trap sites;

a plurality of microLEDs configured to emit light in a first wavelength, each occupying a corresponding well in the first carrier substrate;
a plurality of microLEDs configured to emit light in a second wavelength, each occupying a corresponding well in the second carrier substrate; and,
a plurality of microLEDs configured to emit light in a third wavelength, each occupying a corresponding well in the third carrier substrate.