Title :
Recent development of liquid crystal materials for AM-LCD use
Author :
Numata, H. ; Ichinose, H. ; Manabe, A.
Author_Institution :
Atsugi Tech. Center, Merck Japan Ltd., Kanagawa, Japan
Abstract :
Small elastic constants and large dielectric anisotropy (Δε) LC substances are needed to develop the low driving voltage LCD. The phenomenological and theoretical calculation can be applied to develop large Δε LC substances. It is very important to reduce the ion density of LC cell for good reliability LCD that is characterized by small residual DC and high voltage holding ratio. It has been found that the coexistence of large Δ ε and good reliability are possible by the screening of LC substances. Non-polar substances featuring small γ1 and low Δn also have been developed, and they can be applied for not only to TN but also for IPS and VA modes
Keywords :
dielectric properties; elastic constants; liquid crystal displays; reliability; viscosity; AM-LCD; IPS mode; TN mode; VA mode; active matrix LCD; dielectric anisotropy; elastic constants; high voltage holding ratio; ion density reduction; liquid crystal materials; low driving voltage LCD; reliability; residual DC; Chemicals; Costs; Crystalline materials; Dielectric materials; Energy consumption; Liquid crystals; Low voltage; Materials reliability; Slabs; Viscosity;
Conference_Titel :
Information Display, 1999. ASID '99. Proceedings of the 5th Asian Symposium on
Conference_Location :
Hsinchu
Print_ISBN :
957-97347-9-8
DOI :
10.1109/ASID.1999.762749
