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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 ?
Technavio's report, Global LCoS Projectors Market 2015-2019, has been prepared based on an in-depth market analysis with inputs from industry experts.
Several LCOs, on issues from domestic fire safety to local government, are still working their way through the Westminster system, and Ministers at either end of the M4 are keen to ensure the election does not mean the whole process beginning again from scratch.
Olevia LCD and LCoS TVs assembled at the Ontario facility are destined for retail locations throughout the United States and Canada to support a number of recently announced distribution and retail agreements.
Late last year, Sears terminated an agreement with Brillian to purchase 65-inch LCOS TVs, as the manufacturer was delayed in delivering TVs due to its inability to obtain the expected amount of light engines from JDS Uniphase, as earlier reported by HFN.
Bayer research last summer had revealed that only 20 percent of LCOs and PCOs were aware of TopChoice.
Seeing activity with such low amounts "is powerful evidence" that LCOs are plant growth regulators, says Tom LaRue of the Boyce Thompson Institute for Plant Research in Ithaca, N.
During the first 12 months following that date, seven proposed LCOs were laid before the Assembly, five of which were proposed by the Assembly Government and two by back benchers.
also has had a rough LCOS ride, highlighted by Sears' decision in December to terminate its agreement to purchase 720p 65-inch LCOS televisions from the company for an exclusive line.
The spokeswoman noted that Intel employed a "staff in the dozens" for the LCOS chip venture.