Backlight Types As Fast As Possible
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- Опубликовано: 20 июл 2024
- How do different types of display backlights work, and how do they affect image quality?
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Thanks to Tyler Pruitt from SpectraCal for assisting us with this episode, and for the spectral measurement graphs.
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4:48 YOU HAD ONE JOB MR VIDEO EDITOR!!
Well spotted! Quite a BIG whoopsie moment! Hahaha
i dont get it. :(
When he moves his hands left, the text appeared on the right and when he moved his hands right, the text appeared left.
omg so true "Terran" :p
I thought Linus was scratching his butt on 4:48 XD
For those that don't quite understand the relationship that Linus mentioned between the case fans and the back light, PWN is Pulse Width Modulation. On cooler fans the fan controler turns on and off the full voltage very very fast, resulting in the fan spinning at a constant speed that is dependent on the length of time between voltage "on" cycles. So with the backlights it's the same thing but instead the fan spinning, it makes the light appear to be a less bright as the time between "on" cycles increases.
The DC fan control is when the fan control simply reduces the voltage being put out to the fan which makes it spin slower the more the voltage is reduced. With the backlight it makes it dimmer the more voltage is reduced. The DC method is much better for people with Epilepsy or sensitivity to flashing lights or that get migraines easily as the on and off cycles of a PWM backlight may not appear visible to most people, even most that have any of the above conditions, but the eyeball and brain can still partly sense it causing the brain to freak out or get confused, witch can trigger a splitting migraine at the least.
Please make a 2021/2022 version of this video? It is an interessting topic!
speaking of terrible jokes, our sponsor, audible.com lol
wow
Lol
+javy0820 i consider that as success of advertising
at least he is honest af, lel
Thanks I couldn't hear the video
Educational, entertaining and fast. Great content!
One day, all Linuses in all TechQuickie videos will all be the same color. Orange Linus is funny, green Linus is okay, but I prefer Linus Linus, with authentic Linus reproduction.
Lmao dude
No reproduction any more.
forward this info.
it is lcd, we know,
This is a surprisingly informative video. Nicely done!
Thank you for bringing up the PWM backlighting. I had to return a new laptop due to this as I didn't know why it was giving me horrible headaches whereas my old one didn't. I found a new laptop without PWM and I'm having no problems with it. Another technology for projectors is "single chip" DLP. They display multiple monochrome images every second, and depends on your brain to assemble the color image. I see the rainbows horribly (even on the newest ones) and if I look at one for more than 10 minutes, I have a full-on migraine that puts me down the rest of the day. 3-Chip DLP projectors in theatres obviously don't have this problem, just the single-chip spinning color crap does. I get disillusioned when I see DLP used in public venues such as presentations, etc. I look down at the floor the whole time. It is amazing how many people I hear complaining of eye strain and headaches. LCD technology should be mandatory in a public venue like this; but like some comments I see here; people are either not aware, ignorant, or are not affected by these flashing images; but should have respect to those who have debilitating side-effects from these.
I'm from the year 2030. I'll stick to my MicroLED 8K HDR 240hz 1ms display with no backlight, no screen burn-in and no issues with lifespan/longevity like OLED.
Broly, you're still alive 😮
There is 0.1ms displays in year 2030, and you bought 1ms trash. Lol. (Cause already there are 0.5ms monitors)
Micro-LED, the clue is already in its name, so it obviously doesn't have a backlight. 😌
Techquickie is the best tech learning channel EVERRRRRR!!!
+Neeraj K Nair I love your passion.
+Realunmaker thx
lol
Siddharth Nair Thx dude
Neeraj K Nair lol what are you thanking me for?
"LCD Display" Liquid Crystal Display display, common Linus!
Actually needed to pause my viewing so to commend this masterclass of a 'what to know' briefing for the ever increasing number of informed consuming customers. Impeccable.
Linus, you're looking a little green in this vid mate.
Yeah
+Troy Graham you dont like him when he is angry
guess it comes from the greenscreen
Yes there is usually some glare/ if lighting is off a bit but they could adjust in post. Nice Hulk Reference PR.
+Troy Graham Here, and so many other videos. I've been wondering if it's my monitor that's wrong, but either it is, and yours as well, or he's actually green :P I haven't checked the colors.
I think you forgot to mention Plasma... Although I guess the days of the plasma screens are over.
+ColtaineCrows Still have one and shows better and more natural image quality when watching movies... Can also be used to cook eggs ;)...
I still have one, it's my best TV screen in my house!
Franco Pellegrin johannes914 Well, I meant in the way of actually being produced.
+johannes914 yeah, using my ir thermometer my samsung front gets to 46C on dynamic!
Plasma were horrible for my eye. So much flicker!
honestly, I wish you would have covered more display types as this was super interesting. kind of felt like it ended abruptly, but hey I guess it is techquickie.
Now I understand the reasoning behind the yellow phosphorous breaking down on my cheap 2 year old vizio now leaving me with a blue/purplish looking screen. I watched videos that explained it was the led's causing the issue, but didn't know about the led design. Thanks Linus
if you want to know what kind of backlight your monitor uses, load up a white screen and wave your finger quickly in front of it, if the blur is smooth, your display is flicker free, if you see multiple copies of your finger in the blur, your screen flickers
Could you do a Techquickie on IPS and whatever non-IPS would be? I obviously need to be enlightened.
Very nice information n useful video.
I'm really thankful for your explanation ...
Can u make a video for lan switching(layer 2 vs layer3)?
I was wondering what are the differences between blade servers and rack mount servers
I was also wondering if you can make a video for this topic
Thank you for finally mentioning OLEDS longevity concerns.
I've been waiting for someone to finally say something.
Of course OLED should improve over time. But back in the Galaxy S3 days well....you can find dozens of forum posts about it. Of course I lost the link when I lost my old bookmarks. :c
Just a question, is the backlighting doing the color? Or is it just a white lighting and then the other part of the screen (frontlighting?) is doing all the color work?
really answered my question. thank you man
Back when I bought my first LCD monitor, I did way more research than the average person would. I eventually became fairly disheartened and disappointed, as LCDs definitely do not out-perform CRT monitors in terms of image quality. LCDs may have recently became more powerful in terms of specs, but still arent as versatile in terms of scaling and image quality like the CRTs were.
I was also very annoyed to learn that almost every LCD LED-backlit screen contained blue LEDs instead of white or RGB. This makes a considerable difference in quality and also affects eye-health. Too much blue-light = bad, especially if you're about to go to bed. Blue-light filter programs/settings help, but doesnt solve the other problems, and can easily be forgotten about.
The part that disappointed me most is how painfully slow the market has been at adopting new technologies that I care about. Higher resolution is not my main priority whatsoever. Color gamut, black-levels, contrast(one of the only things that has improved), viewing-angles and high-hz are what I care about more, and those features have been extremely sparse in the lower-mid end LCD market(and possibly even in the higher-end), and you're almost never going to be able to decently achieve all of them.
If more consumers knew the information that Linus shared here in this video, the market would have to adapt to the people requesting/demanding and buying products with those features. I'm sure ill be waiting another 5-10 years since i bought my first LCD before I feel the need to buy my next one. I cant even expect there to be much difference in that amount of time, but I certainly hope there is! I, for one, am tired of LCDs(and especially bluelight LEDs)!
I recently got a mitsubishi diamond pro crt monitor. its max resolution is 2048x1536 @86hz, with a bunch of other resolution modes.
www.cnet.com/products/mitsubishi-diamond-pro-2070sb-crt-monitor-22-series/specs/
it's bar none the best monitor I've ever used. The color is simply amazing, though I am definitely very optimistic for oled as well.
@@Liquifiedpizzas OLEDs can have poorly implemented PWM, I am surprised this point wasn't included in the original comment. This is also quite important for daily use, since low-frequency PWM (lower than 300 Hz, quite common in current smartphones) can cause migranes due to extra eye-strain.
It's been 5 years now, curious how you feel about the market now.
I remember the first LCD monitor I saw, put me off LCDs for a while since it was a total blurry mess. Couldn't even scroll a webpage without the entire screen just turning into blur, but that's different now.
CRTs still to this say have some advantages over LCDs, but they are being overcome. Also in this day and age LCDs just have so many advantages over CRTs that I can't imagine people still using them. About the only place people still use them is for retro gaming, but even that is coming out with better upscalers to make them rapidly match up with CRTs. I have been working on ways to try to optimize my retro system's outputs to LCDs rather than cling to CRTs at this point.
@@Cyber_Akuma could you elaborate in detail on whatever those "upscalers" are?
could you make a video about different sd card classes?
Thanks. I'm looking at new Dell Monitor. Professional series use LED backlight, Ultrasharp use the newer models LED edgelight, so I was wondering which was better. I think you've answered this.
Techquickie as fast as possible please!
Can I swap out the CCFLs in my old LCD TV for LEDs?
Hi Linus, Is there a difference between an "as advertised", LED display and LED backlit LCD? are they the same? If they are not, which one is better.... thank you,, ive been an avid follower of your channels.
Sometimes you have micro LED displays
"And speaking of terrible jokes, audible. com is NOT a terrible joke.." 😂 😂 😂 😂 😂 😂
which backlight technology is used in u series tvs ?
So what's the best type of Moniter? Is it oled dc or lcd or whatever which one is the best
I was searching for a moniter & came across the spec 'WLED'. So it is a direct, full array or only edge lit ? Because nothing else was mentioned in specs.
My monitor has no backlight. It's called a CRT.
+vwestlife id bet you carry a pocket watch too, papa
+vwestlife It has a backlight. It's called an electron gun.
we can't see electrons
but it's Possible to feel them....zap...ouch
+SCARSAC I have a CRT too. I actually have two, I keep one as a backup. I got them for free, and monitors cost money I don't have, so it's great.
Also, I hate that thing with flat monitors where you watch a bit from an angle and you see the image colors all messed up.
Once you mentioned that edge-lit displays are found on cheaper screens, I looked at my laptop and noticed that the edge is quite a bit brighter than the middle. The diffuser isn't very good at it's job. Damn Emachines e-627 from 2005! (With Windows 10 and a 1.6GHz S1 CPU)
Oh, and the CPU is a single core.
Small comment on PWM vs DC: PWM dimmers can reach frequencies of up to a few megahertz, now way you can see that. Of course they can be ridiculous slow too. DC dimming comes with another problem: LEDs tend to slightly change their color depending on the current running through them, thus ever so slightly diminishing color reproduction. I'm not sure how noticable this effect is on LCD screens and how well it can be compensated for.
Can somebody help me? I need somebody to look up a picture of an Ohmeda 3760 pulse oximeter and tell me about that backlit? I seriously need to know about the backlight that is in this old pulse oximeter! It is a bright green lit display!!! but that's all I know and I need to learn more about this type of backlight! Thank you!
I remember those gameboy clip-on lights that had a square hole in the middle so you could see the screen.
+SangoProductions213 Yeah, they were shit because you just saw the light reflecting off the screen instead of the screen itself.
I had one for the Gameboy Advance, though mine had a piece of glass to look through.
In retrospect, it was kinda bulky, it also required its own set of batteries, but it was fine at the time :P
Definitely bulky and clumsy, and often slipped off....but the alternative was playing underneath the lamp, lol. (Game) Boy, has technology advanced.
do you know where I can get the color profile of the AW2720HF Alienware monitor ? because I couldn't fined it anywhere
@2:37 what movie is that image from?
6:18 I like how you LED us to believe you were calling Audible a joke
Can anybody tell me what does the gesture at 2:22 means
Where can I find the addressable CCFL header on my motherboard?
Love your vids
I love you and your insane jokes, give my 65” q80r
we take everything for granted...
Lol
Lol we have to! The year 2021, I am buying a LED TV and it is not capable of producing proper grays and blacks on the screen, and it is Samsung! Learn lesson the hard way.
@@MrYarabandi that sucks, what model of TV was it?
@@AwesomeSauce7176 40T5300. Took me couple hours of color settings tutorials and technical website readings to understand. Low end Samsung TVs suck. Their high end TVs still have fine picture quality though. 40T5300 have "skewed colors" the exact diagnosis.
Good video
Nice video on 2016.
Linus and Techquickie were Far better than 2018.
Explained perfectly
Which one better 4k dimming or local dimming ?
Please do a dynamic vs basic disk as fast as possible!
my tv has backlighting and sharpness and contrast options setting all my past tv didn't have that option
What are fpga processers
I have an HPPavilion Ze2000 from ages ago that i have for android x86, and one thing you can do, is turn off the backlight with a button. What would happen is when you needed to close the laptop the screen would hit the backlight button. This was what we had to do in the age of XP laptops. I now see that a modern laptop will automatically turn the backlight off when it's been closed enough. How does that work? I'm sure it's obvious, but i dont know.... Another question I have like that is pretty dumb(i feel). How does a phone, for example, recognize the rotation? Just wanna learn, don't hate me!! :P Thanks!
i still dont get the rgb backlight, because if you can control the color of the individual pixels on the screen, why cant it turn of the local leds when the picture is black? i dont get it why they all must be lit all the time ( i assume theres a reason)
Linus, what button are you pressing on your hip all the time?
+Black Phillip Probably teleprompter remote.
oh ok, I've been wondering forever.
How about just small black and white OLED screens? Alot of devices, you have the option. Is it worth paying extra few bucks for the OLED one??
Hi Linus can you make a fast as possible about application such as the many different standalone and other type of software. :)
Do u have any idea why my android phone screen goes on and off while i'm using it?. Sometimes i can use my phone for two hours straight without the screen blinking. Sometimes blinking is continuous and i have to wait for the screen to turn on again. So annoying
i want to buy a monitor for ( movies games and photoshop editing )
which one is batter 4k or 3d .( asus PB287Q 4k or asus mg278q 3d)
HEAVEN ANGEL 4k
This photo on led panel? where is it from? is it just art or there was a film like this?
+Piotr Sulej If you mean 2:37 , it's from Transformers : Age of Extinction
www.hdwallpapers.in/walls/lockdown_in_transformers_4_age_of_extinction-wide.jpg
ty, i dont remember a scene like this, but whatever.
Piotr Sulej It's from the poster , you are welcome..
My phone has an OLED display and it is darn gorgeous... but I did notice my keyboard starting to burn into the screen after only a few months. I changed to a third party keyboard that is more subtle to try and patch the issue; This is making my monitor search even tougher.
My Home Screen icons are now like permanently displayed on my screen all da time
God bless you. This review is Gospel.
It’s not as fast as possible when the first half of the clip is a history lesson.
"Speaking of terrible jokes - Audible is not a terrible joke" - Best segway, Linus Sebastian 2016.
Let me give you an alternative:
"Speaking of dinosaurs with only one arm, that waves furiously at every human it passes - Tunnel Bear is not a dinosaur with only one arm, that waves furiously at every human it passes, it is a service that let's you tunnel from your region to any other...."
:'D Man, that segway :D - I liked the video though :D
what is the single and double pressission floating in gpu's
Do one on different types of enter / shift buttons
+Skibble Dazzle You mean the stabilizers on mech keyboards? Like Costar vs cherry stabilizers?
linus, you LIGHT up my world
ok I'll leave now :(
TO THE TOP!!!
Your world ... Is a keyboard
haha
+Mr.MustacheTako well the back of your world
1:35 Dat cable management do, i want to have it the same way!
Backlight types and no one mention of Quantum Dots? Cmon LInus.
There is a "fap" for that already
Quantum dot is an extra layer in the traditional lcd to give the colors more umph its not a type of backlight
Or why your 2010 Bravia can still kick some 4K QLED butt. Refreshing to see old style Linus, when he still had time to shave. Today he looks like he's still in lockdown and stayin in house day after day.
Soooo, since keyboards are also rgb backlit, why dont we have a small display on every mechanical key? Full customizable.
Looking at all those dots fucked my eyes up.
There is a third type. It sectors off the monitor in 4x4 to 8x8 inch sectors. The edge of these sectors are LED lit.
Is it possible? A Tech quickie that communicates more information than what is possible to undestand as an 80 year old?
"No backlighting"
Chooses Gameboy Colour as bait
Well chosen, Linus. Well chosen.
so where does IPS come into all of this?
+North American Survival Attic "IPS" does not pertain to the backlighting, but rather the way the colored sub-pixels in the top layer of the screen (the layer which makes the picture and colors) are arranged. I believe the most common arrangements are "TN" and "IPS". You can tell if a panel is "TN" buy looking at it from different angles, if the picture begins to looked washed out or turns black from these angles it is a "TN" panel. at least initially "TN" panels had faster response times making them good gaming displays, while IPS was better for Televisions because people all over the room could get a consistent experience. IPS has taken over though with the rise of mobile devices like tablets and convertible notebooks, which like TVs need to be visible from all angles.
does that cut in the second C of CCFL bother me only?
Perhaps you guys could help me. Or someone else here. My eyes are soaring more and more the newer the technology gets. It feels as if I slowly lose my vision and the eyes are burning red in the mirror when trying new screens. Ive really held strong to my monitor for 7 years now which works terrific! The problem is that I cant seem to understand what Im looking for because I dont understand the technical stuff. The retailer label the hardware as: PNL,15.6HD BV WLED SVA 45%220neDP FL,SDC. Is there someone that knows where I can get the same technology or even suggest a monitor?
Not mention of quantum dot?
So, the way I take it, the most vibrant and less eye straining tv would be a RDG LED tv that has DC backlighting?
The System shown at 1:35 is screaming 2007.
With a Zalman CNPS 9700 LED, a possible Q6600 and a 8800 GTX
Yeah Yeah I saw the LIT, editors be blazing XD
me: cramming for exam
linuz from 5+ years ago: I gotchu
Hackintosh As Fast As Possible, Please!!
Gotta know what all the cool cats are talking about.
What about wled?
I have a super cheap CCFL monitor hooked to my laptop. The problem being, the two monitors aren't the same color XD
Well, maybe LCD panel type as fast as possible in the future?
Damn Linus can sell any sponsor while speaking about any subject :p
What is his secret?
Linus - BEST. segway. EVAR!
They say the same thing about Plasma that they saying now about OLED. Still using the same Plasma Panosonic 720p TV for almost 9 years and it still not burning out.
dear Linus,
Computers used to confuse me, but not anymore. Because now, I am one.
CCFL is also notorious for deminishing brightness over time. I'm not a fan of led lighting. it doesn't seem to show accurate and full spectrum color. also with rgb (i believe) backlight it just seems as if you are looking at three colors blended together. don't really know how to explain this. with ccfl you will see the colors more as a natural smooth spectrum. I really hope one day there will be screens with individual pixels that consists of just one light emitting pixel that can emit all colors, not three or so next to each other. you will always see it, subconsciously. but most people won't notice until they see it with their own eyes.
+Tijmen J I have an NEC LCD1850E monitor from 2001. It still works great, doesn't hurt my eyes, and the colors are crazy accurate. It also shows more shades of individual colors than I can ever attempt to get a laptop TN or IPS display to even dream of displaying. Yes, it doesn't have as dark of black levels as a newer IPS display; but I don't watch movies on the computer either. That's what I have a Panasonic plasma for.
There are three basic types of displays:
Emissive - OLED, Plasma, CRT, VFDs
Transmissive - LCDs mainly
Reflective - e-readers, calculators, watches
What is amoled display
loved that last joke. More puns please.
PWM per se is not the issue. The issue is the frequency of the PWM signal (different from the frequency of the screen). If the LED are driven by an high enough frequency they are not "turning on and off" they start behaving like a low pass filter and oscillate around a target brightness. The higher the frequency the lower the oscillations.
looking very green today linus. you feeling ok?
linus can you do a silent fan as fast as possible
You mean a fan that's off? ;)