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Transparent glass substrate having antiglare surface

  • US 9,573,842 B2
  • Filed: 05/08/2012
  • Issued: 02/21/2017
  • Est. Priority Date: 05/27/2011
  • Status: Active Grant
First Claim
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1. A transparent glass substrate having an antiglare surface, the antiglare surface comprising:

  • a roughened surface, the roughened surface having a roughness and an RMS amplitude of at least about 80 nm; and

    a frequency cutoff of less than about [1/(0.081·

    RMS)], wherein the frequency cutoff is a frequency ν

    at which the power spectral density of the roughness falls below 1/e2 and is expressed in 1/microns (μ

    m

    1
    ) and RMS is the RMS amplitude of the roughened surface, expressed in nanometers.

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