Patent ID: 11973100
Assignee: SK HYNIX INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for forming an image sensing device comprising:
forming an inner grid layer over a substrate, the substrate including photoelectric conversion elements;
forming a sacrificial film along outer surfaces of the inner grid layer;
patterning the sacrificial film to form a sacrificial film pattern, the sacrificial film pattern covering a side surface and a top surface of the inner grid layer;
forming a capping film to cover the sacrificial film pattern; and
removing the sacrificial film pattern to form an air layer at a position from which the sacrificial film pattern is removed,
wherein the air layer is formed between the capping film and the side surface of the inner grid layer and between the capping film and the top surface of the inner grid layer.