¡§Blue phase¡¨ LCD panels features the advantages of superior response times¡Bwide viewing angle and no requirement for alignment by rubbing greater than conventional LCD modes. Thus, recently several groups have been developed both scientific and technological interests in the blue phases. However, the blue phases only exist in the narrow temperature
range, typically a few Kelvin below the phase transition temperature of materials, which has been a problem for practical applications such as fast light modulators or display. In this paper, we proposed polymer-stabilized liquid crystalline blue phase by photopolymerizing the monomers in the isotropic phase and discussed the theoretical model to describe the stability of the blue phases. The polymer networks play an important role in stabilizing a liquid crystal blue phase. The morphology of polymer network was determined by the process of polymerization condition, like exposure intensity and
temperature. Moreover, scanning electron microscopy (SEM) images were used to understand directly the network structures and to find the regularity of temperature intervals. In the meantime, we successfully extended the temperature range of blue phase over 140oC under suitable conditions.
Based on this research results, the different temperature interval properties of cholesteric blue phases will apply on various photoelectric elements in the future.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0701110-173741 |
| Date | 01 July 2010 |
| Creators | Cheng, Hsin-hui |
| Contributors | none, Tsung-Hsien Lin, none, none |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0701110-173741 |
| Rights | not_available, Copyright information available at source archive |
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