Inventor

YANG CHENGFA

CN2 patents

⚠️ This page may combine multiple inventors who share the name “YANG CHENGFA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

BOE TECHNOLOGY GROUP CO LTD

1 patent

US11746406B2Sep 5, 2023

Mask, preparation method and operation method thereof

BOE TECHNOLOGY GROUP CO LTD4 citations67

ORDOS YUANSHENG OPTOELECTRONICS CO LTD

1 patent

US11250185B2Feb 15, 2022

Method and apparatus for calculating equivalent mechanical parameters of film layer etching region

ORDOS YUANSHENG OPTOELECTRONICS CO LTD0 citations49