Bookmark.icon

Liquid crystal on silicon

A miniaturized reflective active-matrix liquid-crystal display or "microdisplay" using a liquid crystal layer on top of a silicon backplane.

Liquid crystal on silicon (LCoS or LCOS) is a miniaturized reflective active-matrix liquid-crystal display or "microdisplay" using a liquid crystal layer on top of a silicon backplane. It is also referred to as a spatial light modulator. LCoS was initially developed for projection televisions but is now used for wavelength selective switching, structured illumination, near-eye displays, and optical pulse shaping. By way of comparison, some LCD projectors use transmissive LCD, allowing light to pass through the liquid crystal.

In an LCoS display, a CMOS chip controls the voltage on square reflective aluminum electrodes buried just below the chip surface, each controlling one pixel. For example, a chip with XGA resolution will have 1024x768 plates, each with an independently addressable voltage. Typical cells are about 1–3 centimeters square and about 2 mm thick, with pixel pitch as small as 2.79 μm. A common voltage for all the pixels is supplied by a transparent conductive layer made of indium tin oxide on the cover glass.

Key Terms

lcos
liquid crystal layer top
liquid crystal silicon
microdisplay
miniaturized reflective active matrix liquid crystal display
mm
projection televisions
silicon backplane
spatial light modulator
wavelength selective switching

Additional Resources

No ressources found.

Acronymn

LCOS

Synonymns

Liquid crystal on silicon
D-ILA

Comments

No comment found.

Sources & Credits

Last modified on February 11 2020
Content adapted from Wikipedia
No credits found.
Videocide.com is service provided by Codecide, a company located in Chicago, IL USA.
linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram
Malcare WordPress Security