March 2009
Intermediate to advanced
576 pages
17h 24m
English
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Chapter 12. Liquid Crystal Displays
Liquid crystal displays have come a long way since the first monochrome versions appeared in digital quartz wrist watches in the 1970s. Today TVs with LCD displays far outsell their CRT counterparts, and almost all portable consumer electronics devices—including well over a billion cell phones sold each year—use them. This is clearly a technology that works.But how does it work? To start with, liquid crystals are neither liquid nor crystals, though they display the characteristics of both. They are large, elongated molecules whose shape can be altered by an electrical field, which in turn determines how much light they absorb. Liquid crystals occur in nature, some of which are used in organic light-emitting ...
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