Back to results
US 5,846,657 AGranted
Liquid crystal displays containing spacers and methods for producing the spacer
AssigneeRohm and Haas Company
InventorJiun-Chen Wu
Life of this patent
Estimating the term…
Abstract
Methods for preparing uniformly sized polymer particles comprised of multi-functional monomers such as poly(1,4-butanediol diacrylate) and poly(1,6-hexanediol diacrylate) are disclosed. The particles are of a size, uniformity, and contan physical characteristics that make them ideally suitable for use as spacers in liquid crystal display devices.
Claims10
A plurality of spacers comprising crosslinked particles comprised of homopolymers or copolymers of multi-functional acrylate monomer selected from 1,4-butanediol diacrylate and 1,6-hexanediol diacrylate as polymerized units;
- wherein said cross-linked particles have a particle size of about 1 to about 15 microns with a standard deviation in particle size of less than 3% of the mean diameter, a compression value of greater than 150 kilograms per square millimeter, and a recovery factor of greater than 45 percents the standard deviation in particle size is invariant with particle size diameter and a narrow particle size distribution is achieved without classification processes.
Dependencies are inferred from the claim text.