Abstract: Disclosed is the use of certain polyglutarimides as plastic substrates for use in electronic display applications. These substrates have relatively high Tgs for plastics, and good optical clarity and flatness, with low shrinkage and low birefringence. Also disclosed are electronic display cells made using such polyglutarimide substrates.
Type:
Grant
Filed:
November 2, 1998
Date of Patent:
November 27, 2001
Assignee:
Rohm and Haas Company
Inventors:
Alan Daniel Stein, Michael Paul Hallden-Abberton, Audrey Brenda Liss, Steven David Fields
Abstract: Disclosed are uniformly sized domains of liquid crystals, a method for forming the domains, and their performance in polymer dispersed liquid crystal displays. The method provides the ability to form discrete domains of liquid crystal surrounded by a polymer shell, also known as polymer encased liquid crystals, or PELCs. Further, the method provides for the ability to make PELCs that have uniformly sized particles. Displays made comprising uniformly sized PELCs demonstrate markedly improved electro-optical performance over displays made by conventional polymer dispersed liquid crystal processes.
Type:
Grant
Filed:
May 26, 1999
Date of Patent:
March 14, 2000
Assignee:
Rohms and Haas Company
Inventors:
Richard Roy Clikeman, Morris Christopher Wills, Peter Reeves Sperry, Martin Vogel, Jiun-Chen Wu, Willie Lau