Two particle electrophoretic laminate for use with smart windows with reduced diffraction
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United States of America Patent
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Dec 1, 2020
Grant Date -
Feb 1, 2018
app pub date -
Dec 2, 2015
filing date -
Dec 2, 2014
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Abstract
A laminate which can serve as either a smart window or a smart mirror is formed using first and second substrates coated with transparent first and second electrodes which are separated by foraminous layer and a third grid-like linear electrode insulated from the first and second electrodes. The foraminous layer includes spacers defining a cell space which is filled with a colloidal ink having first and second particles. The first particles have a positive charge and a first color and second particles having a negative charge and a second color different from the first color. By altering the voltages of the first, second and third electrodes, one can achieve different light transmission characteristics which, for example, can alter the color temperature of the light transmitted through the laminate or enhance reflective colors.
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