Why aren't there high ppi 4k monitors?

[NMann]

There are phones with 441ppi on 5 inch screens so why cant manufacturers do the same on monitors.

[LiamApex]

phone screen pixels are allot smaller imagine fitting 1920 by 1080 or 2million pixels into a 24inch panel vs a 5 inch panel. you can see how the pixels are physically bigger.

[ALwin]

There are phones with 441ppi on 5 inch screens so why cant manufacturers do the same on monitors.

 

Because ppi is relative to screen size and viewing distance.  You don't need 441 ppi on a desktop monitor that you view from several inches away.

 

This Dell screen has over 200ppi, about the same as the Retina Macbook Pro.

http://accessories.us.dell.com/sna/productdetail.aspx?c=us&l=en&s=bsd&cs=04&sku=up275k3

[Samsterstorm]

Because the screen would have to be 5 inches for you to get a better PPI and that's not useable with a PC!! Plus you are normally a lot further away from the monitor and it will look just as good from a distance instead of right up close to your face! You would need a much greater pixel count than 4K to get that kind of PPI  

[Mo5]

PPI is defined as Pixels per inch - basically a ratio between number of pixels (resolution) and the size of the screen. If you'd want 441ppi on a say 24inch monitor you'd need a lot more pixels than 4K

[ManWithBeard1990]

You don't need that many ppi. Above about 300 (What Apple calls Retina) the human eye can't distinguish individual pixels so anything higher than that will just tax your GPU really.

[NMann]

Because the screen would have to be 5 inches for you to get a better PPI and that's not useable with a PC!! Plus you are normally a lot further away from the monitor and it will look just as good from a distance instead of right up close to your face! You would need a much greater pixel count than 4K to get that kind of PPI

i agree, but wouldnt the extra pixels still contribute to a better viewing experience. I know that the human eye cannot discern a higher pixel density beyond a certain distance away from the display. Still, a higher ppi would make the images almost 3d like. So why not do it, its not like its going to cost manufacturers their quality of products.

[Tagiau]

If you really want high ppi ini a 4k monitor, then get the 25" dell monitor.

[Samsterstorm]

i agree, but wouldnt the extra pixels still contribute to a better viewing experience. I know that the human eye cannot discern a higher pixel density beyond a certain distance away from the display. Still, a higher ppi would make the images almost 3d like. So why not do it, its not like its going to cost manufacturers their quality of products.

I am not sure it would make them '3D like' as you wouldn't be able to see them!!! So really its pointless having a PPI that high on a monitor!! 

[NMann]

I am not sure it would make them '3D like' as you wouldn't be able to see them!!! So really its pointless having a PPI that high on a monitor!!

actually, lg is in the process of making an 8k display that has such a high pixel density they claim there will be no need for 3d glasses

[Samsterstorm]

actually, lg is in the process of making an 8k display that has such a high pixel density they claim there will be no need for 3d glasses

Hmmmmm interesting..... Shall have to look into that! 

[olbaze]

PPI is defined to be length(diagonal in pixels) / length(diagonal in inches). Thus, if you increase the physical size of the display, the PPI goes down. A 4K display at 3840x2160 has 4405 pixels on the diagonal, so a 6 inch screen would give you 734 PPI, whereas a 25 inch screen would give you 176 PPI.

 

For reference, to get even half of the 734 PPI on a 25 inch monitor, you would need a display resolution of 8000x4500. And if you were to increase the size of the display to something more reasonable, the required resolution would also increase.

 

For example, assuming that you have the same aspect ratio, a 25 inch monitor is 25 times larger than a 5 inch cellphone screen. If they have the same PPI and the phone has a 1440p resolution, your monitor would be 7200p. That's 12800x7200, or a "13K" resolution.

 

So simplest answer: They don't exist and there is no technology to make them right now.

[SilicateWielder]

PPI is defined as Pixels per inch - basically a ratio between number of pixels (resolution) and the size of the screen. If you'd want 441ppi on a say 24inch moni

 

PPI is defined to be length(diagonal in pixels) / length(diagonal in inches). Thus, if you increase the physical size of the display, the PPI goes down. A 4K display at 3840x2160 has 4405 pixels on the diagonal, so a 6 inch screen would give you 734 PPI, whereas a 25 inch screen would give you 176 PPI.

 

For reference, to get even half of the 734 PPI on a 25 inch monitor, you would need a display resolution of 8000x4500. And if you were to increase the size of the display to something more reasonable, the required resolution would also increase.

 

For example, assuming that you have the same aspect ratio, a 25 inch monitor is 25 times larger than a 5 inch cellphone screen. If they have the same PPI and the phone has a 1440p resolution, your monitor would be 7200p. That's 12800x7200, or a "13K" resolution.

 

So simplest answer: They don't exist and there is no technology to make them right now.

 

well, you could do what they do with larger displays and perfectly line up 6 5inch panels into a single display, but you're going to need a hell of a lot of graphics processing horsepower., like four Titans or something.

 

And you will also need edgeless panels too,