Re: Why pentile? - N9 AMOLED screen comparison (i8910, GS, GS2, N900, droid, E7). Color performance pentile vs rgb
 

Motorola's Razr models I'm sure a number of them are using AMOLED from Samsung...

Re: Why pentile? - N9 AMOLED screen comparison (i8910, GS, GS2, N900, droid, E7). Color performance pentile vs rgb
 

My bad, you're right. I don't know how I could forget about RAZR line. But they're from samsung. Same goes with Nokia's screens, Samsung produces them. I'm just curious from whom HTC buys screens.

Re: Why pentile? - N9 AMOLED screen comparison (i8910, GS, GS2, N900, droid, E7). Color performance pentile vs rgb
 

LG or Sharp?

Re: Why pentile? - N9 AMOLED screen comparison (i8910, GS, GS2, N900, droid, E7). Color performance pentile vs rgb
 

True. So that limit doesn't exist anymore. I stand corrected. However this wasn't true when the N9 was out.

On the other hand, comparing the E7 with the N9 I'd always take the N9 despite the artifacts and not-so-good color. 180, (even if they are more 'real') ppi is too low.

With subpixels able to shrink more, we could have 800x480 rgb AMOLED on the N9 today, or qHD pentile. What would be best then given that 260ppi is not too low? How far can you go up the ppi count until you can't tell the difference? At extreme ppi's which one looks better? X ppi RGB or X*1.33 ppi pentile.

Re: Why pentile? - N9 AMOLED screen comparison (i8910, GS, GS2, N900, droid, E7). Color performance pentile vs rgb
 

My 3 year old (in a few weeks) Samsung Wave has a 3.3 inch 480x800 pentile amoled display. That is a PPI of 283 or a "true" PPI of 214 (due to pentile).

Surely the technology hasn't been on hold the three last years.

IMO Amoled is better, pentile or not. Black is black is more important than seeing grains with a microscope.

Re: Why pentile? - N9 AMOLED screen comparison (i8910, GS, GS2, N900, droid, E7). Color performance pentile vs rgb
 

Not true. It has s-stripe RGB. It has the same "low" horizontal resolution as any pentile screen (2 sub pixel per pixel). It does has better vertical resolution, at sub pixel level, than any other screen.

http://andu.nm3.kr/files/attach/imag...4fead13075.png

Re: Why pentile? - N9 AMOLED screen comparison (i8910, GS, GS2, N900, droid, E7). Color performance pentile vs rgb
 

S-Stripe looks equivalent to RGB, the red and green subpixels are just rotated.

I think it's even better because less space is wasted on borders between pixels.

It also looks like subpixel hinting would work better with subpixels that aren't three times as high as they are wide.

Re: Why pentile? - N9 AMOLED screen comparison (i8910, GS, GS2, N900, droid, E7). Color performance pentile vs rgb
 

THAT is the PenTile question. While I cannot give a meaningful answer for X > 200ppi, my opinion is quite strong on 200ppi screens (~N9), where it basically sucks.
Note that the traditional RGB layout also has some artifacts. But simply put, RGB screens are everywhere -- so I am already totally used to them.

A ten year old Sony VAIO has a true PPI of 260. The Nokia Internet Tables have had similarly high PPIs for ages. Screen technology has not advanced much in the past decades.

What is exactly false? The layout is RGB, and it uses 3 subpixels per pixel. There are several arrangements in use for RGB pixels (e.g. wedges, etc.)

Re: Why pentile? - N9 AMOLED screen comparison (i8910, GS, GS2, N900, droid, E7). Color performance pentile vs rgb
 

Good question. The sub pixel resolution is less than striped RGB. Striped RGB will therefore potentially achieve greater sharpness for the same (full) pixel count, in horizontal direction. For instance you want to make a white dot at the intersection of all 4 pixels with a diameter of one (full) pixel. For the RGB you will have 6 pixels in horizontal direction you can use (+ more on each side if needed). For S-stripe you only have two. Hence, the accuracy you can achieve is less. In vertical direction it will be a bit more for S-stripe than RGB.

But, and this is the clue to pentile as well. At each sub pixel intersection you have all three colours available for S-stripe and pentile, but only two for RGB. RGB stripe only has high accuracy when going into the pixel, but low when going out. Pentile has high accuracy when going out, but lower (in saturated blue or red) when going into the pixel. S-stripe has high accuracy all over.

Clearly the s-stripe is superior to RGB stripe and pentile. I suspect we will see lots of S-stripe amoled in the future, also with relatively low pixel count.

Re: Why pentile? - N9 AMOLED screen comparison (i8910, GS, GS2, N900, droid, E7). Color performance pentile vs rgb
 

Kindly don't compare normal eyesight with microscope vision.

In Asian metropoles, I see a ridiculous amount of teenagers wearing glasses.
Are they the perfect target customers for Pentile made in Korea? :rolleyes:

Re: Why pentile? - N9 AMOLED screen comparison (i8910, GS, GS2, N900, droid, E7). Color performance pentile vs rgb
 

I guess we can agree that S-Stripe should generally be a superior RGB. Personally, I can't think of a better layout that's not just a tweak of the four points that define the borders in the whole pixel, or simply a rotation.

Regarding PenTile, the original PenTile layout looks interesting:

http://upload.wikimedia.org/wikipedi...d_geometry.png

Spatial resolution of the blue subpixels is exactly double that of that of the red and green subpixels. It's a conservative upgrade to RGB, but I guess subpixel budgets rule it out. However, rotating a subset of those pixels would make it possible to merge subpixels, this means trading pixels that fit neatly in a square grid for increased overall density.