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(Liquid Crystal on Silicon) A technology used to make microdisplays for rear-projection TVs and head-mounted displays (HMDs). Each LCoS chip hosts a grayscale LCD shutter sandwiched between a cover glass and a mirror. The bottom of the cover glass is coated with indium tin oxide that holds a charge. When combined with the charges at the x-y location on the chip's matrix, it causes the liquid crystals to modulate the light for that pixel.

A Mirror Reflects Light Back
Typically used in sets of three (one each for red, green and blue), light is beamed onto the LCoS chip. For the pixels modulated to allow light to pass through, the light hits a mirror and is reflected back to a color filter. The output of the three color filters is combined and magnified to the size of the screen.

Silicon X-tal Reflective Display (SXRD) and Direct Drive Image Light Amplifier (D-ILA and HD-ILA) are proprietary LCoS technologies from Sony and JVC respectively. See rear-projection TV and head mounted display.

Liquid Crystal Microdisplays
LCoS uses LCD panels similar to LCD-based units, except that light is reflected back from a mirror behind the panel to color filters before heading to the lenses.

LCoS Chips from Aurora Systems
Also known as "imagers" and "spatial light modulators," LCoS microdisplays are typically less than an inch square, and their pixel pitch is in the 8-20 micron range.These chips have resolutions from 1024x768 to 1280x768. (Image courtesy of Aurora Systems, Inc.)
References in periodicals archive ?
Why is Syntax, which launched its first LCOS TV earlier this year, eyeing the rear-projection TV category?
Both display technologies can produce a sumptuous, high-definition picture, but LCOS has thrived based on a perceived advantage of its resolution (which many people wrongly believe is the key to overall picture quality).
a manufacturer and marketer of LCD and LCoS HDTVs and digital entertainment products, today announced that it has entered into an agreement with Solar Link Technologies Inc.
The Neath MP said it was vital that the outstanding LCOs were dealt with before the election.
The report covers the current scenario and the growth prospects of the global LCoS projectors market for 2015-2019.
Intel had planned to manufacture an LCOS chip starting this year, but in mid-August announced the delay of these plans until 2005.
Sears may not have completely shut the door on Brillian's LCOS dreams.
LCoS is used in several industries like entertainment, medical, defense, automation etc.
At the Gennum booth, InfoComm attendees will be able to experience how MicroDisplay's Liquid Fidelity single-chip LCOS technology produces a smooth, natural picture with a fine texture, accurate colors and a fast response time for a film-like home theater experience.
Brillian is hoping to take a second swing at this emerging market with its new BR6580 six-megapixel 1080p HDTV LCOS monitors.
Intel announced that it is dropping plans to manufacture an LCOS (liquid crystal on silicon) chip for the emerging category of LCOS digital rear-projection televisions, confirming rumors that have been circulating within the consumer electronics industry over the past few months.
Additionally, it also presents competitive landscape and company profiles of key players operating in the LCoS market.