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SPD film having dark off-state transparency and bright on-state transparency
SPD film having dark off-state transparency and bright on-state transparency
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机译:SPD膜具有暗的关态透明性和亮的通态透明性
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摘要
A light valve film forming a light-modulating element of a light valve, the film comprised of a cross-linked polymer matrix with a plurality of droplets of a liquid light valve suspension distributed therein. The film has a phase ratio: % particle number value calculated by the formula: Matrix / capsule ratio % particles in the capsule = Phase ratio : % particle number In one embodiment the light valve film has a relatively low visible transmittance in the unpowered Off state such that the film has a % T of 0.5 and a DeltaT of 42%. In another embodiment the light valve film has a relatively high visible transmittance in the On state such that the film has a % T of 70% and a DeltaT of 57%.
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