Fabrication of Micro-Structured LED Diffusion Plate Using Efficient Micro Injection Molding and Micro-Ground Mold Core

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%.

Thriving artificial underwater drag-reduction materials inspired from aquatic animals: progresses and challenges

“…Aer this method, the test found that the lighting brightness and processing speed are signicantly improved. 185 In addition to cutting the microstructures, high-speed wire electric discharge machining, laser interference lithography processing, and electrolyte jet processing are used to process high-quality microstructures. The method of manufacturing micro-riblet surface structures on metal plates using high-speed wire electric discharge machining (WEDM-HS) was designed and proposed by Chu et al The surface modied by this method has the advantages of hydrophobicity, low cost, and rapid prototyping.…”

“…After this method, the test found that the lighting brightness and processing speed are significantly improved. 185 …”

Current and Future Trends for Polymer Micro/Nanoprocessing in Industrial Applications

“…Thus, high‐precision technologies have attracted considerable attention in recent years. [ 1,2 ] For example, micro/nanoprocessing of polymers, which pertains to the manufacturing and application of materials to realize the design of industrial products at the micro‐ or nanoscale, is an emerging industry of the 21st century that is considered to hold almost as much potential as the IT and biotechnology fields. [ 3,4 ] In particular, the scale of processing has shifted from the millimeter level (10 −3 m) to the micrometer (10 −6 m) and nanoscale (10 −9 m) levels.…”

Fabrication of Micro-Groove on the Surface of CFRP to Enhance the Connection Strength of Composite Part

“…Different material connections can be mechanical [3], adhesive [4], or molten welding connections [5]. CFRP and the polymer material can be used to produce composite parts using the injection-molding process, which is an excellent approach for producing low-cost and highly repeatable composite parts used in various fields, such as IT, healthcare, and the biomedical sector [6][7][8]. Obviously, the connection strength between the above two materials has an important influence on the service life of the composite parts.…”