A VDU (Visual Display Unit) with no pixels ... will there ever be the technology

[RichUK]

what i mean is if you were to look at the picture on said VDU, would the technology for this ever happen, It would be like looking into a clear glass reflection like a mirror.. absolutly perfect picture or near enough??

So the question is.. is there or will there, ever be the technology to do so?

Rich

 

[Peter]

CRTs don't have pixels. The signal fed into them is discrete, that's where the "problem" comes from. In fact, if you go waaay back in time and look at an oscilloscope, then there's your no-pixels display.

 

[Calin]

Some time ago, there were displays that had the image painted by moving the electon beam the way a plotter would do, not the way a printer would. Needless to say they were used only for CAD, and costed pretty much the same as the computer that drove them
I am talking about 1960 era computers, when printer output was the usual form of outputting things from computer

 

[RichUK]

True about the CRT, the thing is that if you look closely you can still see the different pixels.. i cant remember what it is called but you have like a mesh what the green red and blue photons/protons (whatever) are fired through to get the indiviual pixel/dot (hence thats why you still get dot pitch) the disitance between the pixels, the same with LCD/TFT/projectores/plasma's they all have pixels... what i am can imagining is a flat panel plasma shapped TV, that has a perfect picture mirror like ... in the future...

 

[f95toli]

Even when you look at the real world there are "pixels", after all your eyes use dicrete elemnts to "record" the world. We are also limited by the minimum wavelengths we can see (400 nm). So we do not see the world in infinite resolution.

Anyway, my point is that I doubt the problem is resolution (I doubt you can really see the pixels on a high-res CRT unless you are extremely close to the scrren). The main reason it does not look real has to do with the fact that there is no phase-information; in order for the screen to look like a mirror you would need a holographic display.