Same for Koreans. Capitalizing the first character of the 'generational' name and lowercase for given name could work.
But I think emphasizing the given name offers better UX so given name should be all caps and family name should be all lowercase like this: YUNG Kam soh or soh Kam YUNG.
> But I think emphasizing the given name offers better UX […]
How? You are introducing a custom capitalization convention nobody uses. People expect the UPPERCASED name, if present, to be the surname (or whatever you can sensible put after Mr/Ms). Going against strong conventions is not a good user experience.
But I think emphasizing the given name offers better UX so given name should be all caps and family name should be all lowercase like this: YUNG Kam soh or soh Kam YUNG.