| US 7,542,196 B2 | ||
| Ligand exchange thermochromic, (LETC), systems | ||
| Harlan J. Byker, West Olive, Mich. (US); Paul H. Ogburn, Jr., Hudsonville, Mich. (US); Douglas A. Vander Griend, Grand Rapids, Mich. (US); Brad S. Veldkamp, Zeeland, Mich. (US); and Derick D. Winkle, Holland, Mich. (US) | ||
| Assigned to Pleotint, L.L.C., West Olive, Mich. (US) | ||
| Filed on Sep. 04, 2007, as Appl. No. 11/849,574. | ||
| Claims priority of provisional application 60/841827, filed on Sep. 01, 2006. | ||
| Prior Publication US 2008/0100902 A1, May 01, 2008 | ||
| Int. Cl. G02F 1/01 (2006.01); G02F 1/15 (2006.01); G09G 3/34 (2006.01) | ||
| U.S. Cl. 359—288 [359/265; 345/106] | 18 Claims |
| 1. A thermochromic system comprising:
a) Ni(II);
b) a first ligand which forms a LεMLC with Ni(II);
c) a second ligand which forms a HεMLC with Ni(II); and
d) a polymer
wherein the system is in the form of a solid or semi-solid layer and the system exhibits a reversible net increase in light
energy absorbance in the 400 nm to 1400 nm range as the temperature of the system is increased.
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