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US 11,624,770 B2Granted
Micro device arrangement in donor substrate
AssigneeVueReal Inc.
InventorsGholamreza Chaji, Ehsanollah Fathi
Life of this patent
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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.
Claims20
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 form the one or more donor substrates to a first cartridge substrate, the plurality of microdevices are arranged in arrays;
- selecting at least one set of microdevices in the first cartridge substrate associated with a set of contact pads in the receiver substrate;
- identifying a number of defective microdevices in the at least one set of microdevices;
- correcting the defective microdevices if the number of defective microdevices in the set is more than a set threshold value;
- and
- aligning and transferring the selected set of microdevices on the first cartridge substrate to corresponding contact pads on the receiver substrate.
4 more elements
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 form the one or more donor substrates to a cartridge substrate, the plurality of microdevices are arranged in arrays;
- selecting one or more sets of microdevices in the cartridge substrate for transferring to the receiver substrate, wherein a number of defective microdevices in the selected one or more sets of microdevices is less than a set threshold value;
- and
- aligning and transferring the selected set of microdevices on the cartridge substrate to corresponding contact pads on the receiver substrate.
2 more elements
Dependencies are inferred from the claim text.