Comparison of display technology
From Wikipedia, the free encyclopedia
[edit] General characteristics
This is a comparison of various properties of different display technologies.
| Shape of Screen |
diagonal screen size |
Typical Use | Usable in bright room | ||
|---|---|---|---|---|---|
|
|
|
||||
| Eidophor Front Projection | Flat |
by brightness) |
TV | No | |
| Shadow mask CRT | Spherical curve or flat |
|
|
Computer monitor, TV | Yes |
| Aperture grille CRT | Cylindrical curve or flat |
|
|
Computer monitor, TV | Yes |
| Direct view Charactron CRT | Spherical curve |
|
|
Computer display, Radar display |
No |
| CRT Self-contained Rear Projection | Flat lenticular |
|
|
TV | Yes |
| CRT Front Projection | Flat |
by brightness) |
TV or presentation | No | |
| PDP (Plasma Display Panel) | Flat |
|
|
TV | Yes |
| Direct View LCD | Flat |
|
|
Computer monitor, TV | Yes |
| LCD Self-contained Rear Projection | Flat lenticular |
|
|
TV | Yes |
| LCD Front Projection | Flat |
by brightness) |
TV or presentation | No | |
| DLP Self-contained Rear Projection | Flat lenticular |
|
|
TV | Yes |
| DLP Front Projection | Flat |
by brightness) |
TV or presentation | Yes | |
| LCoS Self-contained Rear Projection | Flat |
|
|
TV | Yes |
| LCoS Front Projection | Flat |
by brightness) |
TV or presentation | No | |
| SED | Flat |
|
|
Computer monitor, TV | Yes |
| FED | Flat |
|
|
Computer monitor, TV | Yes |
| OLED | Flat |
|
|
Computer monitor, TV | Yes |
| Virtual retinal display | Any shape |
|
Experimental, possibly virtual reality | Depends on system | |
| Display Technology | |
|---|---|
| Static | Nixie tube | Split-flap display | Flip-dot display | Electronic paper |
| Video-capable | VFD | CRT | PDP | LED | OLED | Laser TV | LCD | DLP | LCoS | SED | FED | NED Free-space display |
| 3D | Stereoscopic | Volumetric | Holographic |
| Intermittent | Film projection |
[edit] Temporal characteristics
Different display technologies have vastly different temporal characteristics, leading to claimed perceptual differences for motion, flicker etc.
The figure shows a sketch of how different technologies present a single white/gray frame. Time and intensity is not to scale. Notice that some have a fixed intensity, while the illuminated period is variable. This is a kind of pulse-width modulation. Others can vary the actual intensity in response to the input signal.
DLP use a kind of "chromatic multiplex" in which each color is presented serially. The intensity is varied by modulating the "on" time of each pixel within the time-span of one color.
LCD have a constant (backlit) image, where the intensity is varied by blocking the light shining through the panel.
CRT use an electron beam, scanning the display, flashing a lit image. If interlacing is used, a single full-resolution image results in two "flashes".
Plasma modulate the "on" time of each sub-pixel, similar to DLP.
Movie theaters use a mechanical shutter to "flash" the same frame 2 or 3 times to avoid flickering.
