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Don't you mean OLED? Based on my (quick) readup, OLED is the one that has the individual pixels emitting their own light. Whereas it's LCD that has an "always-on" backlight.
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Nope.
A low energy image displayed on an OLED is black, since none of the (light-emitting) pixels are emitting light.
A low energy image displayed on an LCD is white, since none of the (light-stopping) shutters are powered. The backlight is a given cost, but to get a dark pixel requires that we polarize the light from the backlight such that it cannot pass through the display.
On the types of displays found on old watches, calculators etc, the segments appear black because the segment is powered and the light from the environment cannot pass through the display to then reflect on the back of it and return to our eyes.
Colour LCDs have a Red, a Green and a Blue channel (passive) filter for each pixel as well as a(n active) shutter for each of the channels. So a fully red image uses as much power as a fully green image or a fully blue image.
You can get higher contrast ratios on OLEDs because there's less bleed-through from adjacent pixels and because emitting no light works better than turning an LCD shutter on.
I don't know if OLEDs are similar to regular LEDs, in which similar brightness for different colours requires a different amount of power. Blue LEDs for instance, are considerably brighter for a given wattage than red ones.
As an interesting side-note, LEDs can be used to detect light!
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Interesting. Thanks for the refresher. I did read about that when OLED was still new, but forgot most of the actual implementation. 
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I like dark mode because it matches the dark circles under my eyes. 
Jeremy Falcon
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I dislike dark mode because it reminds me of the old Amber screens.
I’ve given up trying to be calm. However, I am open to feeling slightly less agitated.
I’m begging you for the benefit of everyone, don’t be STUPID.
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MarkTJohnson wrote: Amber screens
I hadn't thought about those in a long, long time.
I've used both green and amber screens. Between the two, I thought amber was much better.
I remember one of the secretaries working at my high school hired me to help her out with some word processing (I was a fast typist, a stickler for accuracy, knew my way around WordPerfect and was proficient enough to correct her own grammatical errors), and she had one of those amber monitors. Provided I adjusted the brightness so the individual letters wouldn't "bleed", I thought it was rather pleasant to work with.
And she paid quite well. I don't remember exactly the amount, but she paid me per page, and she almost regretted giving me the job 'cuz I "cost her a lot". On the other hand, she got her work done in no time, and being paid by the page, it really didn't matter I how fast I was, it would've ended up costing her the same. Win-win.
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I like light mode because I'm not very strong.
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I like dark mode on my phone as it makes the screen crisper. I dislike dark mode on my computer as it makes the colors weird.
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You know, I just realized I never went looking for dark mode on my phone.
Turns out if I search for "dark" under Settings, only the messaging app supports it. And I actually kinda like it...but everything else remains on a white background.
This is on Android 9. I'm guessing newer versions (and recent iPhones) have better support for it.
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My wife is having troubles with her battery usage and dark mode improved her battery life by about 20%. Not bad.
GCS/GE d--(d) s-/+ a C+++ U+++ P-- L+@ E-- W+++ N+ o+ K- w+++ O? M-- V? PS+ PE Y+ PGP t+ 5? X R+++ tv-- b+(+++) DI+++ D++ G e++ h--- r+++ y+++* Weapons extension: ma- k++ F+2 X
The shortest horror story: On Error Resume Next
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I dislike dark mode because there is enough darkness in this world without my adding to it.
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.
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Dark mode in a dark room, with bright and Cheery Music. Happy![^]
To err is human to really elephant it up you need a computer
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I like dark mode because our renovated office space has LED lighting which is much brighter than before, and light text on a dark background is easier for me to read with my visual issues.
[bit of a run-on sentence, but that was a requirement]
Software Zen: delete this;
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I like dark mode because I am a vampire and have light sensitivity!
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I like dark mode because I spent a lot of money on an OLED monitor.
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"Yesss... Give in to the Dark Side!" Nope. Not me.
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I tried now more than a handful of times dark mode (specifically in VS). In general I don't last more than a day, last time I used it for a week, maybe a bit more. One day I decided I couldn't take it anymore. I don't know why. I am now using a beige background, actually now is like a muted mustard color.
Why I try dark mode (theme in VS) once in a while? Because I felt it has a lot of detail in differentiating various bits of code and I find that useful, sometimes. And other days I am ashamed as it looks like a circus.
Until the day they'll ban it because of privilege reasons, I'll use the white background.
giuchici
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Because of low vision, I sit close to the monitor, so that light mode is like staring directly into a 100 watt lightbulb.
Bonus answer: Dark mode consumes less energy on emissive displays like OLEDs.
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Drop the brightness. That's most people's problem.
2 of my monitors have their brightness at 0. On one, I set the contrast at 40. The other at 75.
My primary display is a 4K TV, with the brightness at 50 and contrast at 75. People hold up their phones next to them and comment how dark my monitors are. Yes. That's entirely intentional.
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Thanks for your thoughtful comment, but inverse video works better for me. High contrast with the background plus low overall brightness, and videos don't look washed out.
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I had cataracts. Dark mode was vital to my working. At that time, a white background would overwhelm the text. I've since had the surgery on both eyes and I good now.
Cheers,
Mike Fidler
"I intend to live forever - so far, so good." Steven Wright
"I almost had a psychic girlfriend but she left me before we met." Also Steven Wright
"I'm addicted to placebos. I could quit, but it wouldn't matter." Steven Wright yet again.
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I like dark mode because light attracts bugs 
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Wordle 1,166 6/6
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Wordle 1,166 3/6*
⬜⬜⬜⬜🟩
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🟩🟩🟩🟩🟩
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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⬜⬜⬜⬜🟩
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In a closed society where everybody's guilty, the only crime is getting caught. In a world of thieves, the only final sin is stupidity. - Hunter S Thompson - RIP
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