Comparison of display technology
This is a comparison of various properties of different display technologies.
General characteristics
| Display technology | Screen shape | Largest known diagonal | Typical use | Usable in bright room | |
|---|---|---|---|---|---|
| (in) | (cm) | ||||
| 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 | 42[2] | 107 | 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 | |
| Plasma display panel (PDP) | Flat | 152[5] | 386 | TV | Partial |
| Direct view LCD | Flat | 110[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 | |
| Laser self-contained rear projection | Flat lenticular | 75[10] | 191 | TV | Yes |
| LED | Flat | 279.92[11] | 711 | Billboards, TV | Yes |
| SED | Flat | 55[12] | 140 | Computer monitor, TV | Yes |
| FED | Flat | ? | ? | Computer monitor, TV | Yes |
| EPD (e-paper) | Flat (flexible) | ? | ? | Electronic paper | Yes |
| OLED | Curved or Flat (flexible)[13] | 77[14] | 195.58 | Computer monitor, TV, Mobile phone | Yes |
| QDLED[15][16][17][18] | N/A | N/A | N/A | N/A | Yes |
| IMOD | Flat | 1.2[19] | 3 | Mobile phone[20] | Yes |
| Laser Phosphor Display (LPD) | Flat / Box | ? | ? | Projection | Yes |
| Virtual retinal display | Any shape | N/A | N/A | Experimental, possibly virtual reality |
Depends on system |
Temporal characteristics
Different display technologies have vastly different temporal characteristics, leading to perceptual differences for motion, flicker, etc.
The figure shows a sketch of how different technologies present a single white/grey 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 multiplexing" 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". The physical properties of the phosphor are responsible for the rise and decay curves.
- Plasma displays modulate the "on" time of each sub-pixel, similar to DLP.
- Movie theaters use a mechanical shutter to illuminate the same frame 2 or 3 times, increasing the flicker frequency to make it less perceptible to the human eye.
See also
References
- ↑ "DEAD MITSUBISHI 40-INCH TV. help!! - ecoustics.com".
- ↑ "Aperture grille CRT" (PDF).
- ↑ "Monochrome CRT". Archived from the original on 2009-10-09.
- ↑ "Self-contained Rear Projection CRT".
- ↑ "Panasonic Develops World's Largest 152-Inch Full HD 3D Plasma Display - Headquarters News - Panasonic Newsroom Global".
- ↑ "Samsung's 110-inch 4K TV to cost US$150,000".
- ↑ "LCD Rear Projection".
- ↑ Casamassina, Matt (8 January 2007). "CES 2007: Optoma's $50k 120-inch Set".
- ↑ "JVC Develops 110-inch".
- ↑ "Archived copy". Archived from the original on 2009-08-25. Retrieved 2009-09-08.
- ↑ "Largest LED 3D TV".
- ↑ "55-inch SED HDTVs on the way in '08".
- ↑ LG Global (7 January 2015). "CES 2015 LG - Perfect Black, Perfect Color : Only in LG OLED TV" – via YouTube.
- ↑ "LG launches world's largest curved 4K OLED TV".
- ↑ "Quantum Dots QDTV Displays from Nanoco Technologies".
- ↑ "Nevada Nanotechnology Center - Research".
- ↑ Gache, Gabriel. "LED's Outpower QDLED's".
- ↑ Ocean NanoTech research in QDLEDs
- ↑ "Wireless Technology & Innovation - Mobile Technology - Qualcomm" (PDF).
- ↑ "IMOD" (PDF).
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