Display units play a vital component of electronic devices. They are used to exhibit the information. Display devices find a wide range of applications from digital watches to billboard displays. There are many types of display devices available, a few of which will be discussed in this chapter, namely, CRTs, plasma displays, LCD, LED, 7-segment displays, OLED and FOLED, digital light processing, and e-books.

Display technology is generally classified as projective displays and reflective displays. Further projective displays are divided into two classes: emissive and transmitive. CRT and gas plasma displays fall under emissive type of technique, whereas liquid crystal displays (LCD) and liquid crystals on silicon (LCOS) are transmitive ...

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