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.

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• Investigation of ultra-precision planing process to fabricate high luminance retroreflector based on cutting force and tool vibration analysis
  Ji-Young Jeong, Jun Sae Han, Chung-Mo Kang, Eun-Ji Gwak, Doo-Sun Choi, Tae-Jin Je
  Scientific Reports.2022;[Epub]     CrossRef
• Precision Cutting of the Molds of an Optical Functional Texture Film with a Triangular Pyramid Texture
  Huang Li, Zhilong Xu, Jun Pi, Fei Zhou
  Micromachines.2020; 11(3): 248.     CrossRef