Projectors
What is the difference between DLP, LCD and LED projectors?
DLP and LCD are the two technologies that form the image in a projector: DLP uses a chip of tiny mirrors, and LCD uses liquid crystal panels that light passes through. LED, on the other hand, is the type of light: an LED projector uses diodes instead of a lamp, and inside it is still DLP or LCD.
DLP and LCD: how the image is formed
In a DLP projector, light bounces off a chip covered in microscopic mirrors, one per pixel, that tilt thousands of times per second. They tend to be compact and give a sharp picture. On single-chip models, some people notice brief flashes of color when moving their eyes, known as the rainbow effect.
In an LCD projector, light passes through liquid crystal panels that let more or less light through at each point. They produce no rainbow effect and usually show vivid colors.
LED: where the light comes from
The light source can be a traditional lamp, LED or laser. LEDs switch on instantly and last many years without replacement, which is why they dominate portable projectors. In return, they usually deliver less brightness than a lamp or a high-end laser.
That is why a spec sheet can say "LED projector" and "LCD" at once: they do not contradict each other, they describe two different things.
What to check before you buy
- To carry it around, a compact LED model is the most practical.
- Compare brightness in ANSI lumens and native resolution: they matter more than the chip technology.
- If you are sensitive to the rainbow effect, try an LCD.
Guides to help you choose
Frequently asked questions
Neither always wins. DLP is usually more compact and sharp; LCD has no rainbow effect and gives vivid colors. Each model's brightness and resolution matter more.