Abstract
The photoinitated polymerization of 2-chloro-1, 4-phenylene bis[4-[6-(acryloyloxy)hexyloxy]benzoate](1M) and trans-1, 4-bis(4-(2-(2,3-epoxypropyloxy)-ethoxy)-phenyl)-cyclohexyldicarboxylate (3M) were studied. Both monomers exhibit a wide temperature range of nematic phase. The monomers were oriented in their nematic phase at a substrate having been coated with polyimide and unidirestionally rubbed with a nylon cloth. During polymerization, the ordering of the LC molecules was fixed, yielding a uniaxially crosslinked network. The clear LC networks exhibit a birefringence between 0.14 and 0.19, depending on the polymerization temperature. Finally, the nonmesogenic diluents, tetra(ethylene glycol) diacryalte and 1,2-bis(2,3-expoxypropyloxy)ethane were mixed with monomers 1M and 3M, subsequently decreasing the birefringences of the obtained LC networks. The LC networks containing non-mesogenic diluent exhibit not only a smaller birefringence but also a weaker birefringence dispersion in the visible region.
Original language | English |
---|---|
Pages (from-to) | 46-52 |
Number of pages | 7 |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 3421 |
DOIs | |
State | Published - 1 Dec 1998 |
Event | Diplay Technologies II - Taipei, Taiwan Duration: 9 Jul 1998 → 11 Jul 1998 |
Keywords
- Compensation film
- LC network
- Liquid crystal display
- Wide viewing angle