It means "Liquid Crystal On Silicon" Liquid Crystal on Silicon. This new technology combines the qualities of LCD and DLP technology.

The technology is based on the management of 3 as LCD panels, but using the concept of Reflection of light that uses DLP.

LCOS (Liquid Crystal on Silicon):

A projection technology TV screen has to be a liquid crystal layer between a protective glass and a mirror-like surface, highly reflective, patterned with pixels that sit on a silicon chip. They are a micropantalla layers that can be used in projection TVs and front projector. Manufacturers use different names for their technology based on LCOS. JVC uses D-ILA ™ or HD-ILA ™, while using Sony SXRD ™.

This newer hybrid projection TV technology employs liquid crystals coated on a silicon chip, which results in easier, lower-cost manufacturing and higher-resolution images.

The advantages of this technology are driving higher resolutions that LCD and DLP, with a minimum distance between pixel and pixel, the greater contrasts that LCD, DLP best colors.

The disadvantages of this technology are: teams physically larger, higher costs.

LCOS combines LCD and DLP technology that uses liquid crystals instead of individual mirrors. In LCOS, liquid crystals are applied to a reflective mirror substrate. As the liquid crystals open and close, the light is either reflected from the mirror below, or blocked. This modulates the light and creates the image.

LCOS-based projectors typically use three LCOS chips, one each to modulate light in the red, green, and blue channels. Both LCOS and LCD projectors deliver the red, green, and blue components of the light to the screen simultaneously and  usually very high resolution.

Commercial implementations of LCoS technology include: Sony's SXRD (Silicon X-tal Reflective Display) and JVC's D-ILA (Digital Direct Drive Image Light Amplifier). Every company which produces and markets LCoS rear-projection televisions uses three-panel LCoS technology,[citation needed]. Sony and JVC also produce and market front-projection displays that use three LCoS panels.