DocumentCode :
2792109
Title :
Polymer dispersed liquid crystals for high efficiency displays
Author :
Drzaic, P.S.
Author_Institution :
Raychem Corporation, Menlo Park, CA
fYear :
1995
fDate :
7-9 Aug. 1995
Firstpage :
10
Lastpage :
11
Abstract :
Polymer dispersed liquid crystal (PDLC) films serve as the basis for a variety of high-efficiency electro-optical effects. In the most general sense, as PDLC materials consists of micron-sized domains of a liquid crystal, with the domain size determined by a continuous polymer matrix running through the film. Depending on the choice of liquid crystal and polymer, a variety of electro-optical effects have been demonstrated. Of these effects, scattering and dichroic-based displays are the most advanced, although development of cholesteric and smectic-based PDLC materials is of high interest. The present dominance of twisted nematic (1N) and supertwisted nematic (S1N) displays means that only technologies which offer dear advantages over these standards can progress to commercialization. One of the limitations of TN displays is a poor optical efficiency and limited viewing angle due to the presence of polarizers. PDLC materials, on the other hand, do not require the use of polarizers, and as such can offer advantages of high optical efficiency and wide viewing angles. High optical efficiencies is an attractive feature for many display applications, offering the opportunity to unseat TN in these areas. This paper summarizes recent progress in PDLC materials development, as well as in applications of these materials to projection and direct-view displays.
Keywords :
Crystalline materials; Light scattering; Liquid crystal displays; Liquid crystal polymers; Liquid crystals; Optical films; Optical materials; Optical scattering; Optical sensors; Polymer films;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Flat Panel Display Technology/Technologies for a Global Information Infrastructure/ICs for New Age Lightwave Communications/RF Optoelectronics, 1995 Digest of the LEOS Summer Topical Meetings
Conference_Location :
Keystone, CO, USA
Print_ISBN :
0-7803-2448-X
Type :
conf
DOI :
10.1109/LEOSST.1995.763976
Filename :
763976
Link To Document :
بازگشت