Comparison of display technology
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This is a comparison of various properties of different display technologies.
Contents |
[edit] General characteristics
| Display Technology | Screen Shape |
Largest known diagonal (in) |
Largest known diagonal (cm) |
Typical Use | Usable in bright room |
|---|---|---|---|---|---|
| Eidophor Front Projection | Flat | (limited only by brightness) | TV | No | |
| Shadow mask CRT | Spherical curve or Flat | 42[1] | 107 | Computer monitor, TV | Yes |
| Aperture grille CRT | Cylindrical curve or Flat | 40[2] | 102 | Computer monitor, TV | Yes |
| Monochrome CRT | Spherical curve or Flat | 30[3] | 76 | Computer monitor, TV, Radar display, Oscilloscope |
Yes |
| Direct view Charactron CRT | Spherical curve | 24 | 61 | Computer monitor, Radar display |
No |
| CRT Self-contained Rear Projection | Flat lenticular | 80[4] | 203 | TV | Yes |
| CRT Front Projection | Flat | (limited only by brightness) | TV or presentation | No | |
| PDP (Plasma Display Panel) | Flat | 150[5] | 381 | TV | Yes |
| Direct View LCD | Flat | 108[6] | 274 | Computer monitor, TV | Yes |
| LCD Self-contained Rear Projection | Flat lenticular | 70[7] | 178 | TV | Yes |
| LCD Front Projection | Flat | (limited only by brightness) | TV or presentation | Yes | |
| DLP Self-contained Rear Projection | Flat lenticular | 120[8] | 305 | TV | Yes |
| DLP Front Projection | Flat | (limited only by brightness) | TV or presentation | Yes | |
| LCoS Self-contained Rear Projection | Flat | 110[9] | 279 | TV | Yes |
| LCoS Front Projection | Flat | (limited only by brightness) | TV or presentation | Yes | |
| SED | Flat | 55[10] | 140 | Computer monitor, TV | Yes |
| FED | Flat | ? | ? | Computer monitor, TV | Yes |
| EPD | Flat (flexible) | ? | ? | Electronic paper | Yes |
| OLED | Flat | 40[11] | 102 | Computer monitor, TV | Yes |
| IMOD | Flat | 1.2[12] | 3 | Mobile phone[13] | Yes |
| Virtual retinal display | Any shape | (N.A.) | Experimental, possibly virtual reality |
Depends on system |
|
| Display Technology | Screen Shape | Largest known diagonal (in) |
Largest known diagonal (cm) |
Typical Use | Usable in bright room |
[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.
Single-chip DLPs 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. Multi-chip DLPs are not represented in this sketch, but would have a curve identical to the plasma display.
LCDs have a constant (backlit) image, where the intensity is varied by blocking the light shining through the panel.
CRTs 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 displays 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, increasing the flicker frequency to make it less perceptible to the human eye.
[edit] See also
[edit] References
- ^ Shadow mask CRT
- ^ Aperture grille CRT
- ^ Monochrome CRT
- ^ Self-contained Rear Projection CRT
- ^ Plasma Display Panel
- ^ Direct View LCD
- ^ LCD Rear Projection
- ^ DLP
- ^ LCoS
- ^ SED
- ^ OLED
- ^ Mirasol
- ^ IMOD
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