Samsung Electronics Co., Ltd.

Jeonghyeon Lee

Kyunghwan Lee

Jin Hyeock Choi

Jiyoung Kang

Junhyuk Lee

Inkyun Shin

Mirae Jeong

Sukjong Bae

Hyonsok Lee

A method of updating a server knowledge graph, is performed by a server and includes obtaining a server knowledge graph of the server, and obtaining a plurality of device knowledge graphs by receiving a device knowledge graph from each of a plurality of devices. The method further includes generating a knowledge graph for server knowledge graph extension, based on the obtained plurality of device knowledge graphs, and updating the obtained server knowledge graph, using the generated knowledge graph for server knowledge graph extension.

System and method for updating knowledge graph

Methods of reducing registration errors of photomasks and photomasks formed using the methods are provided. The method may include forming a plurality of photomask patterns on a substrate and determining registration errors of the plurality of photomask patterns. The method may further include forming a plurality of stress-producing portions in the substrate to reduce the registration errors by considering exposure latitude variations.

Methods of reducing registration errors of photomasks and photomasks formed using the methods

Growing community of inventors

Suwon-si, South Korea

Jeonghyeon Lee