Thought about 4K pixel quality

[DanCar]

I took a magnified pic of my Seiki 4K monitor to look at the pixels:
https://plus.google.com/u/0/+DanielCardenas/posts/VTRrHcD9dTz
The raw image is black and white pixels arranged in a checker board pattern. What you see in the seiki is not a single white pixel, but pixels of different colors.

So this tells me how seiki is able to sell an inexpensive 4k monitor. What they have done is:
1) taken a 1080P display with quad pixel technology
2) Add the ability to address each subpixel as a normal pixel
http://en.wikipedia.org/wiki/LCD_television#Addressing_sub-pixels

3) Wahla, call it 4K.
This 4K trick works well in my opinion for software development. In other words looking at text and not caring about the color.

What do you think? Hopefully other manufacturers will realize what is going on and offer the same "4K" cough cough low cost tech.

 

[icor1031]

How can you see anything with that moire?
Also, 1920*3 = 5760.... You have 5760x1080. (Subpixels are usually horizontal)

 

[DanCar]

How can you see anything with that moire?

Yes, that moire on the magnified image is interesting. Do not see any moire in normal view. Must be related to the image being magnified or something to do with the display and the camera interacting.

Also, 1920*3 = 5760.... You have 5760x1080. (Subpixels are usually horizontal)

Nice! I didn't know that. So the quad pixel tech would have to be done differently. Do you agree with my conclusion that they are using subpixels? Seems obvious since none of the pixels are white.

 

[dmonkey]

I doubt it. The panel is a known 4K panel and quad subpixel technology would be more expensive, not less. Dithering maybe?

Also it's voila, not wahla. In case you don't know. You might be being snarky.

 

[x3sphere]

I'm pretty sure the Seiki is actual 4K. The only manufacture using the quad subpixel approach was Sharp in its first-generation '4K' sets.

 

[DanCar]

Well forget I said quad pixel technology. Want I was trying to say is using sub pixels as regular pixels as evident by the magnified view of the pixels and the white pixels being different colors.

 

[evilsofa]

If you are speaking about the Seiki 39" SE39UY04, you should be aware of this:

"The TV seems to have a rare ordering of subpixels. Most monitors are in RGB (red, green, blue) order, but the Seiki is BGR. This is only an issue when it comes to subpixel font rendering. If you run the Windows ClearType adjustment, you will see that on the first screen, the text on the right looks a bit better (it is BGR rendered). You can also confirm this by looking at http://www.lagom.nl/lcd-test/subpixel.php and confirming that the black line is to the right of the light blue square."

and:

"To determine if a program is doing the BGR rendering properly (after you have run the ClearType tuner and chosen the sample on the right in the first screen), just take a screen image (with the PrtScn key), paste it into your favorite image editing program and zoom in. If your screenshot has black text on a white background, then for characters like I 1 L |, you should see a blue fringe on the left side, and a red fringe on the right side. If you instead see a red fringe on the left side, the program is assuming an RGB ordering. Again, this only applies for black text. If you have white text on black, reverse what I wrote."

http://www.avsforum.com/forum/145-htpc-gaming/1482611-review-seiki-39-4k-display-se39uy04-2.html

If Windows ClearType is working on this display, then what does that tell you about whether it has subpixels or not?

 

[icor1031]

Well forget I said quad pixel technology. Want I was trying to say is using sub pixels as regular pixels as evident by the magnified view of the pixels and the white pixels being different colors.

Your Camera Sucks.

 

[DanCar]

Yep, was a camera issue. Original pics were taking with a camera phone. I reshot using some macro equipment and see appropriate black and white dots.
Not overly interesting macro pics here:
https://drive.google.com/folderview?id=0B4ijp-kf8RV0VFRYblZMWGNaY1E&usp=sharing
The later pics are shot with increasing magnification.

Thanks for clearing me up!