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Fig. 17 Temperature dependence of electro-optical response time for the polymer-
stabilized blue phases (polymer fraction:
α
= 6.3, 10.5, 15.0 mol %)intherisepro-
cess ( A )anddecayprocess( B ) [46]
ditional liquid crystal display devices have several problems, such as slow
response (millisecond order), the need for initial orientation by surface treat-
ments, and viewing-angle dependence. In contrast, polymer-stabilized blue
phases provide faster response (10 to 100
s), and are optically isotropic and
therefore require no treatment for initial orientation and have small viewing-
angle dependence (Fig. 17). If the remaining problems of high driving voltage
can be resolved, then we will be much closer to seeing real applications of blue
phases.
µ
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