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Micro Dot Patterning on the Light Guide Panel Using Powder Blasting.

Ho Su Jang1, Myeong Woo Cho2, Dong Sam Park3

  • 1Dept. of Mechanical Engineering, Univ. of Incheon, 177 Dohwa -Dong , Nam-Ku, Incheon, Korea. jang9714@incheon.ac.kr.

Sensors (Basel, Switzerland)
|November 24, 2016
PubMed
Summary
This summary is machine-generated.

This study introduces a novel micromachining technology using powder blasting to create micro dot patterns on light guide panel (LGP) molds. This method enables single-injection LGP manufacturing, replacing traditional screen printing processes.

Keywords:
BrightnessInjection MoldLight Guide PanelMatte FinishingMicro Dot PatterningPowder Blasting

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Area of Science:

  • Materials Science and Engineering
  • Manufacturing Technology
  • Optics and Photonics

Background:

  • Current light guide panel (LGP) manufacturing relies on multi-step screen printing processes.
  • Existing methods for creating micro dot patterns on LGP molds are inefficient and costly.
  • There is a need for advanced techniques to improve LGP optical performance and manufacturing efficiency.

Purpose of the Study:

  • To develop a single-step micromachining technology for LGP molds using micro powder blasting.
  • To optimize the process parameters for creating micro dot patterns on LGP molds.
  • To evaluate the performance of LGPs manufactured using the developed mold and process.

Main Methods:

  • Micro powder blasting technique applied for mold surface micromachining.
  • Experimental investigation of optimal conditions for masking, laminating, exposure, and developing processes.
  • Single-injection molding of prototype LGPs using the developed mold.
  • Surface treatment (matte finishing) applied to enhance light diffusion characteristics.

Main Results:

  • Successfully fabricated LGP molds with precise micro dot patterns using micro powder blasting.
  • Verified the machinability and pattern integrity of the micro dot patterns on the mold.
  • Prototype LGPs exhibited improved light diffusion, uniformity, and brightness.
  • Demonstrated the feasibility of replacing screen printing with a single-injection process.

Conclusions:

  • Micro powder blasting is an effective technique for manufacturing LGP molds with micro patterns.
  • The developed single-injection process offers a viable alternative to conventional screen printing methods for LGP production.
  • The matte finishing surface treatment enhances the optical performance of the manufactured LGPs.