They aren't hardware based. As I say in the first link, pixels mostly don't exist in hardware.
Screens very rarely contain a matrix of individual squares.
For example - https://global.samsungdisplay.com/29043/
Screens very rarely contain a matrix of individual squares.
For example - https://global.samsungdisplay.com/29043/
Here, samsung draws a border around one: https://global.samsungdisplay.com/wp-content/uploads/2021/11...
A pixel is made up of multiple components because everything is made of multiple components.
> Samsung Display succeeded in designing the most optimal spatial frequency design with a 45 degree diagonal symmetry across the entire display layout.
See the image: https://global.samsungdisplay.com/wp-content/uploads/2021/11...
All of the components are in that diamond pattern. When you try to draw to a specific pixel width, the display chooses which sub-pixels make up a logical pixel. There is no specific square for you to target.
It seems like defining px to be perceptual is one of those compatibility hacks that probably helped a ton back in the day, but we have perceptual units and now we're stuck with that baggage.
I don't have much of an opinion on this (I use em) but it has taken me by surprise a few times.
Yes. But those glowing lights aren't little squares in a neat horizontal and vertical rows.
The square pixel is useful in logical contexts - like an SVG or bitmap graphic. But when it is turned into a physical display, those pixels aren't displayed as little squares. The RGB elements are arranged in dozens of different formations depending on the display technology.