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  • The Great Technology War: LCD vs. DLP

    If you are new to the world of digital projectors, you won't have to shop around very long before discovering that the terms "LCD" and "DLP" refer to two different kinds of projectors. You might not even know what LCD and DLP are before asking the obvious question "which one is better?"
     
    The answer is simple. Sort of. LCD and DLP each have unique advantages over the other. Neither one is perfect. So it is important to understand what each one gives you. Then you can make a good decision about which will be better for you.
     
    The Technical Differences between LCD and DLP
     
    LCD (liquid crystal display) projectors usually contain three separate LCD glass panels, one each for the red, green, and blue components of the video signal being fed into the projector. As light passes through the LCD panels, individual pixels ("picture elements") can be opened to allow light to pass or closed to block the light, as if each little pixel were fitted with a Venetian blind. This activity modulates the light and produces the image that is projected onto the screen.
     
    DLP ("Digital Light Processing") is a proprietary technology developed by Texas Instruments. It works quite differently than LCD. Instead of having glass panels through which light is passed, the DLP chip is a reflective surface made up of thousands of tiny mirrors. Each mirror represents a single pixel.
     

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