The optical film for light luminance improvement of back light unit that is used in light emitting diode/liquid crystal display and retro-reflective film is used as luminous sign consist of square and triangular pyramid structure pattern based on V-shape micro prism pattern. In this study, we analyzed machining characteristics of Cu-plated flat mold by shaping with diamond tool. First, cutting conditions were optimized as V-groove machining for the experiment of micro prism structure mold machining with prism pattern shape, cutting force and roughness. Second, the micro prism structure such as square and triangular pyramid pattern were machined by cross machining method with optimizing cutting conditions. Variation of Burr and chip shape were discussed by material properties and machining method.

• 김창의(부산대학교 융합학부 하이브리드소재응용전공, 한국기계연구원 나노공정연구실) | Chang-Eui Kim
• 전은채(한국기계연구원 나노공정연구실, 과학기술연합대학원 나노메카트로닉스과) | Eun-chae Jeon
• 제태진(한국기계연구원 나노공정연구실, 과학기술연합대학원 나노메카트로닉스과) | Tae-Jin Je Corresponding Author
• 강명창(부산대학교 융합학부 하이브리드소재응용전공) | Myung Chang Kang Corresponding Author