Why TVs don't have a 2,560x1,440-pixel resolution but smartphones and PC monitors do?

[myaccount1234]

I want to know because if a phone can have that resolution why a TV can't. It would be cheaper than 4k 3840 X 2160p and a good middle resolution to 1080p and 4k 3840 X 2160p. I bet people would not even see a difference between 2,560x1,440 and 3840 X 2160p.

 

[blazorthon]

3840x2160 is an easier transition from 1080p than going to 2560x1440 because 3840x2160 is exactly 1080p times four. That means that 1080p TV will not need to be stretched/dithered/whatever when viewed on a 3840x2160 display. Each 1080p pixel can simply be mapped to a 2x2 block of pixels in 3840x2160, so you don't lose quality relative to watching 1080p on a 1080p display. A 2560x1440 display would only have this relationship to 720p. Since 1080p is so common right now, 3840x2160 is more logical since you're theoretically guaranteed to have better picture quality whereas a 2560x1440 display might actually have inferior quality compared to a 1080p display when viewing 1080p content.

Just speculation.

 

[Rogue Leader]

Because TV's use a standardized resolution based upon both the display as well as the recording device used and scale based on that. Theres a lot more to it about why 1440p ended up not being used but the extremely abridged version is it was easier for panel manufacturers to manufacture to the HD 1080p resolution, and then to the 4k resolution (which is just 2x HD).

TV manufacturers would have to have a different product line at that resolution to sell to a small bit of the market, it would confuse customers (QuadHD Vs 4K, what does that mean???), and cost more than its worth.

 

[JQB45]

I think you answered your question. No one will notice the difference.
It has to do with bigger is better, marketing most likely.

 

[Daniel Hart]

Computer monitors and phones are designed to be looked at from only a couple feet away. TV's are designed to sit several yards away so the difference in resolution wouldn't be noticed like you said.