Hahm S.G. – TechConnect Briefs

Polyimides with Fluorenyl Side Groups and Their Unusual, Unique Alignability of Liquid Crystals at the Film Surface

Hahm S.G., Lee T.J., Ree M., Pohang University of Science and Technology, KR

Polyimides (PIs) have been widely used in the microelectronics industry as dielectric materials because of their advantageous properties. In the present study, we synthesized CBDA-FDA and its analogue, poly(4,4’-(9,9-fluorenyl)diphenylene pyromellitimide) (PMDA-FDA) and then investigated quantitatively [...]

Anchoring and alignment behavior of liquid crystals on poly(vinyl cinnamate) thin films

Lee S-W., Lee T.J., Hahm S.G., Lee S-W., Lee T.J., Ree M., Pohang University of Science and Technology, KR

At present, a rubbing process using a fabric is the only technique adopted in the LC display industry to treat PI film surfaces for the mass-production of flat-panel LC display devices. However, this process has [...]