TIR-MODULATED WIDE VIEWING ANGLE DISPLAY
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United States of America Patent
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May 2, 2016
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Jul 8, 2013
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Improvements and modifications are provided in the type of frustrated total internal reflection (TIR) systems described in U.S. Pat. Nos. 6,885,496; 6,891,658; 7,286,280; 7,760,417 and 8,040,591. The improvements and modifications include various methods to improve display operation of hemispherical beaded front plane TIR systems such as (a) inhibit or prevent the undesired non-uniform distribution and lateral migration of charged, electrophoretically mobile, TIR frustrating particles by encapsulating or tethering the particles to the beaded front plane surface; (b) inhibit or prevent the settling of the TIR frustrating particles such as modifying the viscosity of the low refractive index medium; and (c) inhibit or prevent the non-uniformity of the applied electric field during display operation such as using a conforming rear electrode.
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