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Home > LCOS Projection

LCOS - Liquid Crystal on Silicon

Price range: $3,000 to $9,000 +

Sizes: 50" to 72" +

OverView

LCoS, which stands for Liquid Crystal on Silicon is one of the newest rear-projection display technologies, LCOS (or LCoS) is similar to LCD (HTPS) and consists of a liquid crystal layer which sits on top of a pixelated, highly reflective substrate. Below the substrate exists another layer containing the electronics to activate the pixels. This assembly is combined into a panel and packaged for use in a projection subsystem. Currently LCOS light valves are manufactured in 1280 x 768 (720p) and 1920 x 1080 (1080p) chip configurations.

LCOS is a reflective LCD display panel with high open area ratio. Basically, by placing the wiring area and switching elements under the reflection layer, there is no black matrix area – so it is possible to view a near-seamless image. LCOS systems can be created as 1 chip and 3 chip systems.

At the moment (meaning the next 15 minutes), LCOS technology is fairly competitive in terms of price and performance advantages compared to HTPS and DMD systems. Pixels on LCOS panels can be made smaller than is possible with other microdisplay technologies, without compromising picture quality or manufacturability. LCOS displays can be scaled to 1080i/p resolution (1920x1080 pixels) and beyond, without increasing the size and cost of the panel and other optical components in the light engine.

For more information on TV resolutions Click Here

What’s Next

The future. Better, faster, cheaper. LCOS technology is still relatively expensive compared to LCD and DLP, but with Intel stepping up mass production this year that can be expected to change. According to Intel, in 2005 it will be possible for the cost of a single-panel LCOS light engine to drop below the cost of DLP and LCD light engines. This means that HDTVs based on Intel's LCOS technology may be less expensive than the competition.

Advantages:

Extreamly smooth video and none of the disadvatages experienced by DLP,LCD, and Plasma.


Disadvantages:

Very low contrasts compared to DLP, LCD, and Plasma. DLP, LCD, and Plasma all run contrast ratio's from 2000:1 to over 10000:1. Also LCOS projections are expensive in price.

 

 

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