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US 12,416,664 B2Granted
Micro device arrangement in donor substrate
AssigneeVueReal Inc.
InventorsGholamreza Chaji, Ehsanollah Fathi
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Abstract
This disclosure is related to arranging micro devices in the donor substrate by either patterning or population so that there is no interfering with non-receiving pads and the non-interfering area in the donor substrate is maximized. This enables the transfer of micro devices to a receiver substrate with fewer steps.
Claims5
A method of populating a receiver substrate, the method comprising the steps of:
- preparing a plurality of microdevices on one or more donor substrates;
- transferring the plurality of microdevices from the one or more donor substrates to a cartridge substrate, the plurality of microdevices being arranged in arrays, separated by an interfering area in between, on the cartridge substrate;
- selecting one or more transferable sets of microdevices in the cartridge substrate;
- identifying a number of defective microdevices in each transferable set of microdevices;
- correcting the defective microdevices if a sum of the number of the identified defective microdevices is more than a threshold value;
- and
- aligning and transferring the selected one or more transferable sets of microdevices on the cartridge substrate to corresponding contact pads on the receiver substrate.
4 more elements
Dependencies are inferred from the claim text.