X-ray scattering studies of phase-separated composite organic film cells
- Authors
- Choi, Hong; Kim, Dong-Woo; Rhie, Kung-Won; Hong, Mun-Pyo; Shin, Sung-Tae; Kumar, Satyendra; Jang, Won-gun; Lee, Baek-woon; Kim, Kyeong-hyeon
- Issue Date
- 2월-2008
- Publisher
- IOP PUBLISHING LTD
- Keywords
- X-ray scattering; ferroelectric liquid crystal; phase-separated composite organic film; tilted-bookshelf; SmC*; layer buckling
- Citation
- JAPANESE JOURNAL OF APPLIED PHYSICS, v.47, no.2, pp.1008 - 1011
- Indexed
- SCIE
SCOPUS
- Journal Title
- JAPANESE JOURNAL OF APPLIED PHYSICS
- Volume
- 47
- Number
- 2
- Start Page
- 1008
- End Page
- 1011
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/124137
- DOI
- 10.1143/JJAP.47.1008
- ISSN
- 0021-4922
- Abstract
- The authors report X-ray scattering experiments on phase-separated composite organic film (PSCOF) structures mixed with ferroelectric liquid crystals (FLCs). We discuss the effect of the local layer structure in a PSCOF cell on the ratio of the concentration between prepolymer and liquid crystals. The ratio of optimized concentration in terms of optical characteristics for a PSCOF liquid crystal display are 30 wt % for prepolymer (NOA65) and 70 wt % for FLCs (Felix). We found that the layer structure in a ferroelectric liquid crystal cell made of 30 wt % NOA65 and 70 wt % Felix is a tilted-bookshelf layer structure. The angles 15 and 17 degrees are the tilted-bookshelf angles at 65 and 58 degrees C, respectively. These layer tilt angles are almost same as the molecular tilt angles of ferroelectric liquid crystals in the Sm C* phase. We understand that this result comes from compensating for layer buckling. We consider that the PSCOF-mode local layer structure is an excellent solution to the problem of zig-zag defects and mechanical shock for application in future televisions and plastic ferroelectric liquid crystal displays (FLCDs).
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- Appears in
Collections - College of Science and Technology > Semiconductor Physics in Division of Display and Semiconductor Physics > 1. Journal Articles
- Graduate School > Department of Applied Physics > 1. Journal Articles
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