Patent ID: 11921394
Assignee: NUCLERA LTD
Field: Optics (Instruments)
Classification: CPC G  C  H | IPC G

Claim 8:
9. A method of creating an electrowetting on dielectric (EWoD) device having a layered structure, the method comprising:
providing a substrate;
depositing a layered dielectric on the substrate by:
depositing a first layer of aluminum oxide or hafnium oxide using atomic layer deposition, the first layer having a thickness between 20 nm and 40 nm;
depositing a second layer of tantalum oxide or hafnium oxide using sputtering, the second layer having a thickness between 40 nm and 250 nm; and
depositing a third layer of tantalum oxide or hafnium oxide using atomic layer deposition, the third layer having a thickness between 10 nm and 35 nm; and

depositing a hydrophobic layer on the layered dielectric.