Light valve suspensions and films containing UV absorbers and light valves containing the same
First Claim
Patent Images
1. A liquid light valve suspension, which comprises particles suspended in a liquid suspending medium, the liquid suspending medium having dissolved therein a UV-absorbing effective amount of a benzotriazole derivative.
1 Assignment
0 Petitions
Accused Products
Abstract
Light valve suspensions and light valve films are provided with a UV absorber.
65 Citations
24 Claims
- 1. A liquid light valve suspension, which comprises particles suspended in a liquid suspending medium, the liquid suspending medium having dissolved therein a UV-absorbing effective amount of a benzotriazole derivative.
- 5. A liquid light valve suspension, which comprises particles suspended in a liquid suspending medium and a stabilizing polymer in said liquid suspending medium to prevent agglomeration of said particles, said stabilizing polymer comprising a UV-absorbing effective amount of a UV absorber.
- 12. A film suitable for use as the light modulating element of a light valve, comprising a polymer matrix and droplets of a liquid light valve suspension distributed in the polymer matrix, the polymer matrix or the liquid light valve suspension or both including a UV-absorbing effective amount of a UV absorber.
Specification