Patent ID: 11901490
Assignee: YUAN LICENSING CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 2:
3. A protection layer manufacturing method, comprising:
(1) forming a first thin film on a surface of a sample by using a first material as a raw material;
(2) forming a buffer thin film on the first thin film; and
(3) forming a second thin film on the buffer thin film by using a second material as a raw material;
wherein both the first material and the second material are selected from the group of metal oxide, metal sulfide, metal selenide, metal nitride, and metal oxynitride, and the buffer thin film being made of a mixture or a compound of the first material and the second material;
wherein a first metal element for constituting the first material has a first atom radius, and a second metal element for constituting the second material having a second atom radius that is greater than the first atom radius.