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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.)
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References in periodicals archive ?
InLC owns the LC and LCoS fabrication facilities and controls all aspects of the design and manufacturing of high-performance LC and LCoS engines customized for telecom and optical networking.
The nonlinear aeroelastic system of an airfoil is a typical self-excited system, which can exhibit lots of nonlinear dynamical behaviors such as bifurcations, limit cycle oscillations (LCO), and chaotic responses [1, 2].
Technavio's report, Global LCoS Projectors Market 2015-2019, has been prepared based on an in-depth market analysis with inputs from industry experts.
Rockwell Collins' EP-8000 image generation and LCoS projection system is proven, having achieved Level D certification from governing authorities on various flight simulators.
ST1080 uses two 1080p resolution LCoS panels to produce 2D and 3D images from Blu-ray discs and console games.
The controversial organ donation LCO, which would assume dead people would have wished to donate their organs for transplant unless they had specifically opted out during their lifetime, will be introduced as a Bill.
The Assembly gains limited legislation powers - known as Legislative Competence Orders (LCOs) - following the passage of the Government Of Wales Act 2006.
Yogesh Shah established Digicable in July 2007 to set up a large MSO by aggregating smaller MSOs and local cable operators (LCOs), and to provide digital broadcasts and value-added services.
Both of these products use SVGA (800 x 600 pixels) format LCOS micro-displays, most likely ferroelectric LCOS supplied by Micron (which was acquired by DisplayTech in 2009).
Critics of the current Welsh law-making procedure, known as "LCOs" (Legislative Competence Orders) in political jargon, is too slow and ties the hands of the Assembly Government.
The SX7 Mark II D's LCOS technology, native SXGA+ high resolution (1400 x 1050) and 4,000 lumens of brightness help deliver images with exceptional color reproduction, fine lines and crisp small text.