Fabrication of micro-structured LED diffusion plate using efficient micro injection molding and micro-ground mold core

Yanjun Lu, Wang Luo, Xiaoyu Wu, Bin Xu, Chunjin Wang, Jiajun Li, Liejun Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

In this paper, a new style of micro-structured LED (light-emitting diode) diffusion plate was developed using a highly efficient and precise hybrid processing method combined with micro injection molding and micro-grinding technology to realize mass production and low-cost manufacturing of LED lamps with excellent lighting performance. Firstly, the micro-structured mold core with controllable shape accuracy and surface quality was machined by the precision trued V-tip grinding wheel. Then, the micro-structured LED diffusion plate was rapidly fabricated by the micro injection molding technology. Finally, the influences of micro injection molding process parameters on the illumination of the micro-structured diffusion plate were investigated. The simulated optical results show that the illumination of the micro-structured diffusion plate can achieve a maximum value when the V-groove depth and V-groove angle are designed to be 300 μm and 60°, respectively. The experimental results indicate that the developed micro-structured diffusion plate may improve the illumination by about 40.82% compared with the traditional diffusion plate. The prediction accuracy of the designed light efficiency simulation method was about 90.33%.

Original languageEnglish
Article number1307
JournalPolymers
Volume12
Issue number6
DOIs
Publication statusPublished - Jun 2020

Keywords

  • Diffusion plate
  • Grinding
  • Micro injection molding
  • Micro-structure

ASJC Scopus subject areas

  • Chemistry(all)
  • Polymers and Plastics

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