|
Advertisement: |
|
How Does DLP Technology Work?
THE DLP SEMICONDUCTOR
At the heart of every DLP™ projection system is an optical semiconductor known as the Digital Micromirror Device, or DMD chip.
The DMD chip is probably the world's most sophisticated light switch. It contains a rectangular array of up to 1.3 million hinge-mounted microscopic mirrors; each of these micromirrors measures less than one-fifth the width of a human hair, and corresponds to one pixel in a projected image.
When a DMD chip is coordinated with a digital video or graphic signal, a light source, and a projection lens, its mirrors can reflect an all-digital image onto a screen or other surface. The DMD and the sophisticated electronics that surround it are what we call Digital Light Processing™ technology.
DIGITAL LIGHT PROCESSING I: THE GRAYSCALE IMAGE
A DMD panel's micromirrors are mounted on tiny hinges that enable them to tilt either toward the light source in a DLP™ projection system (ON) or away from it (OFF)-creating a light or dark pixel on the projection surface.
The bit-streamed image code entering the semiconductor directs each mirror to switch on and off up to several thousand times per second. When a mirror is switched on more frequently than off, it reflects a light gray pixel; a mirror that's switched off more frequently reflects a darker gray pixel.
In this way, the mirrors in a DLP™ projection system can reflect pixels in up to 1,024 shades of gray to convert the video or graphic signal entering the DMD into a highly detailed grayscale image.
DIGITAL LIGHT PROCESSING II: ADDING COLOR
The white light generated by the lamp in a DLP™ projection system passes through a color wheel as it travels to the surface of the DMD panel. The color wheel filters the light into red, green, and blue, from which a single-chip DLP™ projection system can create at least 16.7 million colors. And the 3-DMD chip system found in DLP Cinema™ projection systems is capable of producing no fewer than 35 trillion colors.
The on and off states of each micromirror are coordinated with these three basic building blocks of color. For example, a mirror responsible for projecting a purple pixel will only reflect red and blue light to the projection surface; our eyes then blend these rapidly alternating flashes to see the intended hue in a projected image.
Digital Light Processing Color Wheel
DLP TV Buying Information and Background InformationDLP Reviews and Internet Links
- NEW: How to buy a DLP Television in 8 Easy Steps
- DLP TV vs LCD TVs
- DLP TV vs Plasma TVs
- Where should you go to buy your DLP TV?
- The Invention & Background of Digital Light Processing - DLP
- How Digital Light Processing (DLP) Technology Works
- Estimated Life Span of a DLP Television
- DLP TV Brightness Levels
- DLP Technology and PC Connectivity
- Selecting the correct DLP TV Screen Size
- View the current selection of DLP TV Models
How to buy a DLP Television in 8 Easy Steps DLP TV and Rear Projection HDTV Reviews Find Authorized DLP and Projection TV Dealers
© Copyright Notice
This content is distributed by the DLPTVReview.com, 5590 SW Cherry Ave, Beaverton, OR 97005. This column may not be resold, reprinted, resyndicated or redistributed without written permission from DLPTVReview.com or it's affiliated editors. For more information please read our full copyright disclosure.
 | |
|
| Samsung DLP TV | Mitsubishi DLP TV | Panasonic DLP TV | Toshiba DLP TV | JVC Projection TV | Sony Projection TV | |
 |
|
DLP TV review
Current DLP TV Models
Compare DLP TV Models
8 Step DLP Buying Guide
|
 | |
|
