this post was submitted on 11 Dec 2023
102 points (97.2% liked)

No Stupid Questions

35876 readers
1119 users here now

No such thing. Ask away!

!nostupidquestions is a community dedicated to being helpful and answering each others' questions on various topics.

The rules for posting and commenting, besides the rules defined here for lemmy.world, are as follows:

Rules (interactive)


Rule 1- All posts must be legitimate questions. All post titles must include a question.

All posts must be legitimate questions, and all post titles must include a question. Questions that are joke or trolling questions, memes, song lyrics as title, etc. are not allowed here. See Rule 6 for all exceptions.



Rule 2- Your question subject cannot be illegal or NSFW material.

Your question subject cannot be illegal or NSFW material. You will be warned first, banned second.



Rule 3- Do not seek mental, medical and professional help here.

Do not seek mental, medical and professional help here. Breaking this rule will not get you or your post removed, but it will put you at risk, and possibly in danger.



Rule 4- No self promotion or upvote-farming of any kind.

That's it.



Rule 5- No baiting or sealioning or promoting an agenda.

Questions which, instead of being of an innocuous nature, are specifically intended (based on reports and in the opinion of our crack moderation team) to bait users into ideological wars on charged political topics will be removed and the authors warned - or banned - depending on severity.



Rule 6- Regarding META posts and joke questions.

Provided it is about the community itself, you may post non-question posts using the [META] tag on your post title.

On fridays, you are allowed to post meme and troll questions, on the condition that it's in text format only, and conforms with our other rules. These posts MUST include the [NSQ Friday] tag in their title.

If you post a serious question on friday and are looking only for legitimate answers, then please include the [Serious] tag on your post. Irrelevant replies will then be removed by moderators.



Rule 7- You can't intentionally annoy, mock, or harass other members.

If you intentionally annoy, mock, harass, or discriminate against any individual member, you will be removed.

Likewise, if you are a member, sympathiser or a resemblant of a movement that is known to largely hate, mock, discriminate against, and/or want to take lives of a group of people, and you were provably vocal about your hate, then you will be banned on sight.



Rule 8- All comments should try to stay relevant to their parent content.



Rule 9- Reposts from other platforms are not allowed.

Let everyone have their own content.



Rule 10- Majority of bots aren't allowed to participate here.



Credits

Our breathtaking icon was bestowed upon us by @Cevilia!

The greatest banner of all time: by @TheOneWithTheHair!

founded 1 year ago
MODERATORS
 

I feel like it used to be size, color, and clarity meant more expensive. Now I look at a 500$ 4k TV and a 2000$ 4k TV and I don't know what the difference is. They can both be smart TVs, be the same size, and have a lot of same advertised features, but what are the subtle unspoken mysteries that justify a huge price gap?

you are viewing a single comment's thread
view the rest of the comments
[–] Honytawk@lemmy.zip 14 points 11 months ago* (last edited 11 months ago) (2 children)

How small the lights are in the back

  • Edge-lit is just one big light, no dimming zones.

  • Direct-lit are big squares of dimmable zones in the back

  • Mini-led are small squares of dimmable zones, like Direct-lit but smaller

  • Quantum-dot Led are even smaller squares of dimmable zones that are build-into the screen

[–] AnyOldName3@lemmy.world 7 points 11 months ago

Quantum dot LED TVs don't actually use quantum dot LEDs (yay, marketing). They're built like any other LCD, but instead of having a white backlight (typically a blue LED with a phosphor to fluoresce the blue to green and red, too, making white) and then a colour filter behind each pixel subelement to only let the right colour through, they have a blue LED backlight, and then a quantum dot film that fluoresces the blue to the right colour.

The advantage of this is that you're not making light in colours you can't use just to get absorbed by the filter and turned into heat, so can make the backlight brighter, which, when combined with other techniques to make good LCDs, is enough to make them comparable to OLEDs in quality and price.

Actual quantum dot LEDs let you make light at practically any frequency you want, like OLEDs (traditional LEDs only make light at bandgap frequencies for atoms of elements, and there's not a huge choice of suitable elements, hence blue LEDs taking decades to materialise after other colours were cheap). In theory, quantum dot LEDs won't have burn-in problems, but they're currently not practical to make a TV out of, giving marketing people plenty of time to weasel out of their fuckup with naming existing QLED TVs.

[–] AgnosticMammal@lemmy.zip 5 points 11 months ago

And OLED is dimming at the pixel layer?