Light-emittnig diode mark and its used semi-transparent plastic sheet

Light-emittnig diode mark and its used semi-transparent plastic sheet

  • CN 1,469,331 A
  • Filed: 05/23/2003
  • Published: 01/21/2004
  • Est. Priority Date: 05/23/2002
  • Status: Active Application
First Claim
Patent Images

1. light diffusion sign, described sign comprises:

  • (a) light emitting diode (LED) light source;

    (b) Pao Guang translucent co-extrusion pressure thin slice, described thin slice comprises;

    (i) stratum granulosum, it contains the 1-60% particle mean size and is about the 4-100 micron, and size-grade distribution is the particle of 1-110 micrometer range, particle and thermoplastic matrix melting mixing, measure according to ASTM D 542, the refractive index of described particle and matrix differs by more than 0.001 unit;

    (ii) one deck basalis at least, described basalis comprises thermoplastic compounds, measures according to ASTM D 542, and the refractive index of each basalis is in 0.2 unit of described stratum granulosum matrix refractive index.

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