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

Claim 0:
1. A protection layer, comprising:
a first thin film made of a first material;
a second thin film made of a second material, being formed on the first thin film; and
a buffer thin film, being formed between the first thin film and the second thin film;
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.