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Micro Dot Patterning on the Light Guide Panel Using Powder Blasting

View Article: PubMed Central - PubMed

ABSTRACT

This study is to develop a micromachining technology for a light guide panel(LGP) mold, whereby micro dot patterns are formed on a LGP surface by a single injection process instead of existing screen printing processes. The micro powder blasting technique is applied to form micro dot patterns on the LGP mold surface. The optimal conditions for masking, laminating, exposure, and developing processes to form the micro dot patterns are first experimentally investigated. A LGP mold with masked micro patterns is then machined using the micro powder blasting method and the machinability of the micro dot patterns is verified. A prototype LGP is test- injected using the developed LGP mold and a shape analysis of the patterns and performance testing of the injected LGP are carried out. As an additional approach, matte finishing, a special surface treatment method, is applied to the mold surface to improve the light diffusion characteristics, uniformity and brightness of the LGP. The results of this study show that the applied powder blasting method can be successfully used to manufacture LGPs with micro patterns by just single injection using the developed mold and thereby replace existing screen printing methods.

No MeSH data available.


Overall fabrication process for a LGP mold
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f2-sensors-08-00877: Overall fabrication process for a LGP mold

Mentions: The overall fabrication process for a LGP mold with micro pattern using powder blasting is illustrated in Figure 2. Prior to this process, pattern design and pattern mask making processes are required. Through the masking process, mold regions to be removed by the powder blasting are determined. Finally, the desired micro dot pattern forming injection mold for the LGP can be obtained after the powder blasting and cleaning processes.


Micro Dot Patterning on the Light Guide Panel Using Powder Blasting
Overall fabrication process for a LGP mold
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3927497&req=5

f2-sensors-08-00877: Overall fabrication process for a LGP mold
Mentions: The overall fabrication process for a LGP mold with micro pattern using powder blasting is illustrated in Figure 2. Prior to this process, pattern design and pattern mask making processes are required. Through the masking process, mold regions to be removed by the powder blasting are determined. Finally, the desired micro dot pattern forming injection mold for the LGP can be obtained after the powder blasting and cleaning processes.

View Article: PubMed Central - PubMed

ABSTRACT

This study is to develop a micromachining technology for a light guide panel(LGP) mold, whereby micro dot patterns are formed on a LGP surface by a single injection process instead of existing screen printing processes. The micro powder blasting technique is applied to form micro dot patterns on the LGP mold surface. The optimal conditions for masking, laminating, exposure, and developing processes to form the micro dot patterns are first experimentally investigated. A LGP mold with masked micro patterns is then machined using the micro powder blasting method and the machinability of the micro dot patterns is verified. A prototype LGP is test- injected using the developed LGP mold and a shape analysis of the patterns and performance testing of the injected LGP are carried out. As an additional approach, matte finishing, a special surface treatment method, is applied to the mold surface to improve the light diffusion characteristics, uniformity and brightness of the LGP. The results of this study show that the applied powder blasting method can be successfully used to manufacture LGPs with micro patterns by just single injection using the developed mold and thereby replace existing screen printing methods.

No MeSH data available.