NICK'S ELECTRICAL TEST EQUIPMENT

Comparison of display technology

General characteristics

Comparison of various properties of different display technologies

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

107

Computer monitor, TV

Yes

Aperture grille CRT

Cylindrical curve or Flat

40

102

Computer monitor, TV

Yes

Monochrome CRT

Spherical curve or Flat

30

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

203

TV

Yes

CRT front projection

Flat

(limited only by brightness)

TV or presentation

No

Plasma display panel (PDP)

Flat

152

386

TV

Yes

Direct view LCD

Flat

108

274

Computer monitor, TV

Yes

LCD self-contained rear-projection

Flat lenticular

70

178

TV

Yes

LCD front-projection

Flat

(limited only by brightness)

TV or presentation

Yes

DLP self-contained rear-projection

Flat lenticular

120

305

TV

Yes

DLP front-projection

Flat

(limited only by brightness)

TV or presentation

Yes

LCoS self-contained rear-projection

Flat

110

279

TV

Yes

LCoS front-projection

Flat

(limited only by brightness)

TV or presentation

Yes

Laser self-contained Rear Projection

Flat lenticular

65

165

TV

Yes

SED

Flat

55

140

Computer monitor, TV

Yes

FED

Flat

?

?

Computer monitor, TV

Yes

EPD (e-paper)

Flat (flexible)

?

?

Electronic paper

Yes

OLED

Flat

40

102

Computer monitor, TV, Mobile phone

Yes

QDLED

N.A.

N.A.

N.A.

N.A.

Yes

IMOD

Flat

1.2

3

Mobile phone

Yes

Virtual retinal display

Any shape

N.A.

Experimental, possibly

virtual reality

Depends

on system

Display technology

Screen shape

Largest known diagonal

Typical use

Usable in

bright room

(in)

(cm)

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/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

Computer monitor

Large-screen television technology

References

^ Shadow mask CRT

^ Aperture grille CRT

^ Monochrome CRT

^ Self-contained Rear Projection CRT

^ World's largest 152-Inch Full HD 3D Plasma Display

^ Direct View LCD

^ LCD Rear Projection

^ DLP

^ LCoS

^

^ SED

^ OLED

^ Quantum Dots QDTV Displays from Nanoco Technologies

^ Quantum Dot LEDs

^ LED's Outpower QDLED's

^ Ocean NanoTech research in QDLEDs

^ Mirasol

^ IMOD

v  d  e

Display technology

Video

Current generation

Electroluminescent display (ELD)  Vacuum fluorescent display (VFD)  Light emitting diode (LED) display  Cathode ray tube (CRT)  Liquid crystal display (LCD) (TFT  LED backlight)  Plasma display panel (PDP)  3LCD  Digital Light Processing (DLP)  Liquid crystal on silicon (LCOS)

Next generation

Organic light-emitting diode (OLED) (roll-up display  Active-matrix  Phosphorous)  Surface-conduction electron-emitter display (SED)  Field emission display (FED)  Laser TV  Ferro Liquid display (FLD)  Interferometric modulator display (IMOD)  Thick-film dielectric electroluminescent (TDEL)  Nanocrystal display  Quantum dot display (QDLED)  Time-multiplexed optical shutter (TMOS)  Telescopic pixel display (TPD)  Liquid crystal lasers (LCL)  Laser Phosphor Display (LPD)

Non-video

Electromechanical (Flip-dot  Split-flap  Vane)  Electronic paper  Rollable  Eggcrate  Nixie tube

3D display

Stereoscopic  Autostereoscopic  Computer generated holography  Volumetric  Laser beam

Static media

Hologram  Movie projector  Neon sign  Rollsign  Slide projector  Transparency

Related articles

Display examples  Free-space display  Large-screen television technology  Optimum HDTV viewing distance  High dynamic range imaging (HDRI)

Comparison of display technology

Categories: Display technology | Technological comparison
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