No as Far as LCD TVs go does each Pixel Light Up Right next to one another and move Left to Right like the Electron Beam did in the CRT TVs?

Or do all of the LCDs Light Up at the same Time and the only ones that Change are the ones that are moving on Screen like a Car?

Mostly, the LEDs are backlights and the LCD pixles provide the picture. Because the whole arrangement is scanned in a digital manner they are scanned in blocks, rather than one at a time. But because there is no magnetic deflection used the scan does not need to be so sequential. And it can be much faster.
Magnetic deflection required a whole lot of power to vary the magnetic field that rapidly, which is why the size of TV creens was limited. Flat screen LCD systems do not suffer that burden, but instead the picture rate is determined by the transmission media bandwidth.

 

Is this how LCD TVs work then?

All the LCDs at the Top of the Screen Left to Right are Lit Up at the same Time.
Then the Next Row of LCDs Under it from Left to Right are Lit Up at the same Time.

And it does this down the whole Screen to make the Image.

Then it Starts over again to make the Next Image.

Or is this not Right?

 

In a CRT display, there is only 1 pixel that is "lit" at any instant - that portion of the screen the Electron Beam is, during the scanning. (persistance of the phospher on the screen reduces the flicker).
In a LCD or a LED display, the whole screen is "lit" all the time. (I'm not going into pixel multiplexing at this stage).
Each of that "pixel" or "a batch of pixels" is refreshed sequentially from a Video (Buffer) Memory. This rate can be even be 200 or more for a large size display. The rate of refreshing is independent of the original video "frame" rate.
The Video Memory (or Video RAM) is refreshed at a rate of the original video - 16 / 50 / 100 frames/Sec depending on the format.

 

One point so far not mentioned is that the LCD pixels do not "light up". they switch on and transmit light from the back-light. They are a bit slower, which is why we do not see any flickering on the LCD screen display. The magic scheme by which all of the colors are produced is a different discussion.

 

One point so far not mentioned is that the LCD pixels do not "light up". they switch on and transmit light from the back-light. They are a bit slower, which is why we do not see any flickering on the LCD screen display. The magic scheme by which all of the colors are produced is a different discussion.

Yes, LCD pixels do not light up. LED pixels do.
I mentioned that the screen is lit.

 

I should not have Asked like that.

I do know LCDs just let Light Pass or Not.

Let Me put it like this.

If the Picture is of a House and a Street and a Car is going by the Screen from Left to Right.

With an LCD T.V. the Whole Picture is Displayed and the only Pixels that Change are the Pixels that make up the Car.

So as the Car is Moving from Left to Right on the Screen the Pixels that just Make Up the Car Change to show it is Moving?

So a CRT T.V. what Draw the Whole Picture even the Car as it Moves but the LCD T.V. will just Change the Pixels for the Car Moving.

Is this Right?

 

I believe that the whole picture is refreshed each frame. Some compression schemes work differently, so compresedvideo may be different.

 

I should not have Asked like that.

I do know LCDs just let Light Pass or Not.

Let Me put it like this.

If the Picture is of a House and a Street and a Car is going by the Screen from Left to Right.

With an LCD T.V. the Whole Picture is Displayed and the only Pixels that Change are the Pixels that make up the Car.

So as the Car is Moving from Left to Right on the Screen the Pixels that just Make Up the Car Change to show it is Moving?

So a CRT T.V. what Draw the Whole Picture even the Car as it Moves but the LCD T.V. will just Change the Pixels for the Car Moving.

Is this Right?

In LCD / LED displays, the video information for each pixel is Digital, they remain as such till refreshed.
In a CRT display, the information is Analog, and the only pixel "storage" is the phospher persistence.
You can easily "freeze" a LCD / LED picture, quite complex for a CRT.

 

LCD TVs go does each Pixel Light Up Right next to one another and move Left to Right like the Electron Beam did in the CRT TVs?

LCD stays on most of the time. There is no "flying spot" like in a CRT TV.

 

Ok so in a CRT Screen the Electron Gun would Draw every Line Left to Right as it moved Down the Scree.
And I do know every Time it would Draw a New Frame and so on the only things that would change is whatever is moving.

Now with an LCD Screen the Whole Image is Displayed at One Time and when the Next Whole Image is Displayed the only things that changed are the things that are moving.

Do I have this Right?

 

Ignore the fact as to whether or not the object is moving.

Persistence of vision is about 20Hz. As long as the screen is refreshed faster than 20ms moving objects will appear to move smoothly.

 

Ignore the fact as to whether or not the object is moving.

Persistence of vision is about 20Hz. As long as the screen is refreshed faster than 20ms moving objects will appear to move smoothly.

Except for wagon wheel spokes.

 

Except for wagon wheel spokes.

That is only because the Nyquist sampling theorem has been violated.