Patent ID: 11886116
Assignee: INPRIA CORPORATION
Field: Optics (Instruments)
Classification: CPC G  H | IPC G

Claim 0:
1. A method for patterning a substrate, the method comprising:
contacting an understructure comprising sequentially a substrate, an unpatterned hardmask layer over the substrate, and a first latent image having an irradiated portion and an un-irradiated portion, with a developing composition to remove the un-irradiated portion to form a patterned understructure comprising a patterned metal oxide based material having a first pattern over the unpatterned hardmask layer over the substrate, wherein the unpatterned hardmask layer has an average thickness from about 3 nm to about 75 nm;
depositing a precursor composition over a surface of the patterned understructure opposite to the substrate to form a layer of a photosensitive composition, wherein the photosensitive composition comprises an organometallic composition with radiation sensitive organic ligands bound to the metal, wherein the patterned metal oxide based material is subjected to a hard bake freeze at a temperature of between 45 and 100 degrees C. for a duration of between 0.1 and 1 minute prior to depositing the precursor composition;
irradiating the layer of photosensitive composition to form a second latent image, wherein the pattern corresponding to the second latent image is distinct from the first pattern, wherein the unpatterned hardmask layer has differential etching relative to the irradiated photosensitive composition and the patterned metal oxide based material;
developing the second latent image to form a second pattern from irradiated photosensitive composition to form a developed structure.