|
Comparison of display technology
|
This is a comparison of various properties of different display technologies.
General characteristics
Comparison of various properties of different display technologies
| 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 |
| D-ILA Self-contained Rear Projection |
Flat |
110 |
279 |
TV |
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 |
? |
? |
Mobile phone[12] |
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 |
Temporal characteristics
Different display technologies have vastly different temporal characteristics, leading to claimed perceptual differences for motion, flicker etc.
Sketch of some common display technologies' temporal behaviour
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.
See also
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
- ^ IMOD
|
