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Nexus One display and subpixel pattern

blog.javia.org

11–20 of 28 posts

Re: Nexus One display and subpixel pattern

#11

Very interesting! This may explain the un-Googley-ness of the Android interface. I was racking my brain to figure out why the interface didn't have a blue, Gmail mobile /web app look and feel.

It's an interesting connection to make, but I don't think OLED subpixel operating life estimates played a part in the UI design. Remember, wherever there's a white pixel, there's a blue subpixel going at full strength, and there's no shortage of white in Android.

Re: Nexus One display and subpixel pattern

#12

Very interesting! This may explain the un-Googley-ness of the Android interface. I was racking my brain to figure out why the interface didn't have a blue, Gmail mobile /web app look and feel.

Interestingly enough, the color scheme and theme for Android icons and widgets changed in 2.0 (for the Verizon Droid) from colorful blues to greys. I wonder if that change in color schemes was specifically intended for the Nexus One, or just a coincidence...

Re: Nexus One display and subpixel pattern

#15
post #5

I consumed this article with much enthusiasm. It was filled with information and still very easy to read. My immediate thought though: I wonder how much battery-time you would gain by making the device monochrome (black/green) when you just intend to use it to, say, call or perhaps even read something. Maybe a mode like this already exists in Android? I don't have a Nexus one, so... :) Heck, if it doesn't exist, then…

I still want to see some real numbers on energy consumption between a 100% white and 100% black (but still powered) AMOLED. As the first two letters stand for active matrix, there's still a control voltage going through each pixel when it's at RGB000, so the difference may not be as great as it's often made out to be.

Re: Nexus One display and subpixel pattern

#16
post #10
post #6

800 horizontal pixels, but half of them can contain no red and the other half can contain no blue. Someone should cue the lawyers from the dithered LCD lawsuits. They will have a field day with this.

That's not accurate. The human eye uses primarily green to detect resolution. Red and blue are used for color. I wish I could find it, but there was an online example, where someone took a picture, divided it into the three channels, then pixelated (mosaic) one channel at a time and recombined it. When he did green you saw it right away. With red it took some pixelation before you could see it. And with blue it took…

Still, it's in the same category as the LCD panel dithering suit referenced. Both are measures that technically reduce fidelity but are effectively invisible to the naked eye.

Re: Nexus One display and subpixel pattern

#17
post #5

I consumed this article with much enthusiasm. It was filled with information and still very easy to read. My immediate thought though: I wonder how much battery-time you would gain by making the device monochrome (black/green) when you just intend to use it to, say, call or perhaps even read something. Maybe a mode like this already exists in Android? I don't have a Nexus one, so... :) Heck, if it doesn't exist, then…

I still want to see some real numbers on energy consumption between a 100% white and 100% black (but still powered) AMOLED. As the first two letters stand for active matrix, there's still a control voltage going through each pixel when it's at RGB000, so the difference may not be as great as it's often made out to be.

Active matrix just means every pixel has it's own switching transistor, as opposed to just every row and column. There may be drive voltage at every pixel but not current.

Re: Nexus One display and subpixel pattern

#18
post #6

800 horizontal pixels, but half of them can contain no red and the other half can contain no blue. Someone should cue the lawyers from the dithered LCD lawsuits. They will have a field day with this.

The OLPC uses a similar technique; apparently the effective resolution is not totally obvious: http://pixelqi.com/blog1/2008/05/27/higher-resolution-than-w...

Re: Nexus One display and subpixel pattern

#19
post #13

Interestingly, many camera sensors also have a dithered sensor pattern: http://en.wikipedia.org/wiki/Bayer_filter - but a different arrangement of colors.

Yah. That's almost exactly the same pattern, just with the red and blue swapped.

This phone should be great for displaying raw images, since you can show the subpixels with a one to one relationship.

Re: Nexus One display and subpixel pattern

#20
post #10
post #6

800 horizontal pixels, but half of them can contain no red and the other half can contain no blue. Someone should cue the lawyers from the dithered LCD lawsuits. They will have a field day with this.

That's not accurate. The human eye uses primarily green to detect resolution. Red and blue are used for color. I wish I could find it, but there was an online example, where someone took a picture, divided it into the three channels, then pixelated (mosaic) one channel at a time and recombined it. When he did green you saw it right away. With red it took some pixelation before you could see it. And with blue it took…

"Your eyes suck at blue": http://nfggames.com/games/ntsc/visual.shtm
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