V.I.Bobr 손정영 2024-01-12T13:34:20Z 2024-01-12T13:34:20Z 2001-04-03 https://pubs.kist.re.kr/handle/201004/88033 천연색　영상　표시용　홀로그래픽　스크린　제작방법 Patent 2001-04-03 1999-11-02 6,211,977 09/432,410 US 특허 한국과학기술연구원