Polymer-Layer-Free Alignment for Fast Switching Nematic Liquid Crystals by Multifunctional Nanostructured Substrate

Title
Polymer-Layer-Free Alignment for Fast Switching Nematic Liquid Crystals by Multifunctional Nanostructured Substrate
Authors
정우빈정현수전환진김윤호황정연김재훈정희태
Keywords
Liquid Crystal; Alignment; Nano pattern; Pre-tilt angle; Response time
Issue Date
2015-11
Publisher
Advanced materials
Citation
VOL 27, NO 42, 6760-6766
Abstract
Current liquid-crystal-display (LCD) technology relies on the use of an alignment layer [ 1 ] along with polymer rubbing and photoalignment [ 2–4 ] to align liquid-crystal (LC) molecules. However, future designs of high performance, 3D, low energy consuming displays will not rely on alignment layers to bring about uniform alignment and fast response of LC molecules. The major reason for the need of a new design strategy is that alignment layers in these displays cause transmittance degradation, refractive index mismatching, undesired capacitance, and low thermal and physical stability. [ 5–8 ] As a result, techniques must be uncovered to rapidly align LC molecules on electrode substrates, without any defects over large areas, without utilizing polymer layers. [ 9,10 ] Although the potential exists that asymmetric nonnematic LCs can be used for this purpose, [ 11,12 ] it is diffi cult to design the proper LC molecules because of their symmetric breaking characteristics, the narrow temperature ranges over which they can be used, and defects that are typically generated.
URI
http://pubs.kist.re.kr/handle/201004/50798
ISSN
09359648
Appears in Collections:
KIST Publication > Article
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