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Comparison of display technology

Blaze Display Technology Co., Ltd. | Updated: Oct 28, 2015

【R&D Department of Blaze Display】 

Comparison of various properties of different display technologies
Display TechnologyScreen ShapeLargest known
diagonal (in)
Largest known
diagonal (cm)
Typical UseUsable in
bright room
Eidophor Front ProjectionFlat(limited only by brightness)TVNo
Shadow mask CRTSpherical curve or Flat42[1]107Computer monitor, TVYes
Aperture grille CRTCylindrical curve or Flat40[2]102Computer monitor, TVYes
Monochrome CRTSpherical curve or Flat30[3]76Computer monitor, TV,
Radar display, Oscilloscope
Yes
Direct view Charactron CRTSpherical curve2461Computer monitor,
Radar display
No
CRT Self-contained Rear ProjectionFlat lenticular80[4]203TVYes
CRT Front ProjectionFlat(limited only by brightness)TV or presentationNo
PDP (Plasma Display Panel)Flat150[5]381TVYes
Direct View LCDFlat108[6]274Computer monitor, TVYes
LCD Self-contained Rear ProjectionFlat lenticular70[7]178TVYes
LCD Front ProjectionFlat(limited only by brightness)TV or presentationYes
DLP Self-contained Rear ProjectionFlat lenticular120[8]305TVYes
DLP Front ProjectionFlat(limited only by brightness)TV or presentationYes
LCoS Self-contained Rear ProjectionFlat110[9]279TVYes
LCoS Front ProjectionFlat(limited only by brightness)TV or presentationYes
SEDFlat55[10]140Computer monitor, TVYes
FEDFlat??Computer monitor, TVYes
EPDFlat (flexible)??Electronic paperYes
OLEDFlat40[11]102Computer monitor, TVYes
IMODFlat??Mobile phone[12]Yes
Virtual retinal displayAny shape(N.A.)Experimental, possibly
virtual reality
Depends
on system
Display TechnologyScreen ShapeLargest known
diagonal (in)
Largest known
diagonal (cm)
Typical UseUsable in
bright room

 

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.

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