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Thread: LG OLED TV burn-in woes evident at trade show

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    LG OLED TV burn-in woes evident at trade show

    A 65-inch exhibition TV suffered from significant burn-in after only 2 to 3 weeks.
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    Re: LG OLED TV burn-in woes evident at trade show

    Presumably monitors at exhibitions (and for public display) will be operated at higher brightness levels than in a domestic environment. Domestically TV tends to me frequently changing images which also mitigates against burn in.

    This CNET article goes into burn in (or image retention) in some detail, including how to mitigate it in the first place, or remove it if it does occur.

    https://www.cnet.com/news/oled-scree...-need-to-know/

    That said, the critical bit is that (they assert) it is due to uneven ageing - which re-inforces the fact that at present OLED displays may have a shorter life span than 'conventional' display technology.
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    Re: LG OLED TV burn-in woes evident at trade show

    Personally I would expect to see burn in on any OLED or Plasma panel if it was displaying a static image for 8 hours a day. You'd be a fool to think otherwise. Now the real question is was it displaying a static image.

    Both my Panny plasma's have burnt in Sky logos in the bottom left corners from where the family has paused a program and then left it for a couple of hours or more, repeatedly. OLED I would not expect to be any different in this regard and fully expect to get burn in. Goes with the territory I'm afraid.

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    Re: LG OLED TV burn-in woes evident at trade show

    Yeah so OLEDs don't burn in, the pixels continue to degrade after a certain amount of usage. If the 'blue' subpixel is used loads for a logo, it will degrade quicker than the surrounding blue subpixels and look like there is 'burn in'. For everyone to see it is really still 'burn in' but it is caused by different things. It happens to every OLED from every company.

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    Re: LG OLED TV burn-in woes evident at trade show

    Having read this, I'm pleased I went for a FALD LED Bravia instead. My sons are terrible for leaving Sky paused for ages while they have dinner or go out in the garden.

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    Re: LG OLED TV burn-in woes evident at trade show

    Quote Originally Posted by Blaineoliver View Post
    Yeah so OLEDs don't burn in, the pixels continue to degrade after a certain amount of usage. If the 'blue' subpixel is used loads for a logo, it will degrade quicker than the surrounding blue subpixels and look like there is 'burn in'. For everyone to see it is really still 'burn in' but it is caused by different things. It happens to every OLED from every company.
    There is plenty of evidence that burn-in does occur on OLED displays, not least the image in the article. Burn-in simply refers to a persistent after-image, not literally burnt in to the screen.

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    Re: LG OLED TV burn-in woes evident at trade show

    There are better and worse quality OLED displays when it comes to burn in.

    10 years ago I was working at Nokia on one of the first phones to feature an OLED display. To test for burn in, we brought 10 premium displays from different manufacturers, put them in a test rig with the same static image displayed 24/7 with the brightness cranked up to maximum and left them like that for 3 months.

    At the end of the time, some displays had fairly noticeable burn in, others where fine. As it was a premium phone we where working on, we spec'd the best performing display for production, and had no complaints about burn in from the end users.

    On the other hand if a product is being built down to a price, then there are some terrible displays out there, that will suffer burn in after only 100 hours or so of use.

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    Re: LG OLED TV burn-in woes evident at trade show

    Company who has a vested interest in Nanodot technology as used in the Samsung tv has a oled display that just happens to have one of the most publicised issues.....hmm, think I'd want some independent testing before believe everything being said about the LG tv.

    I'm pretty sure I could force burn in by just using a high output of the exact same image for 3 weeks 24 hours a day, hell I remember the days when lcd's had 'burn in' issues if left on for too long. There's also an easier way to 'fake it' when turned on and that's just to have an transparent image overlay in that corner when doing the 'graphical work' being displayed.

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    Re: LG OLED TV burn-in woes evident at trade show

    There is New OLED tech that reduces "burn-in" by 70%, LG better start using and release soon.

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    Re: LG OLED TV burn-in woes evident at trade show

    Quote Originally Posted by Friesiansam View Post
    There is plenty of evidence that burn-in does occur on OLED displays, not least the image in the article. Burn-in simply refers to a persistent after-image, not literally burnt in to the screen.
    That's image retention, rather than burn in though.

    Burn in is when its stuck there for good. Many screens suffer image retention of some degree or another, bizarrely my really old Panny plasmas never had any IR issues, Sky paused, games with HUDs, no problems.....it seems to be the newer kit that is suffering more.
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    Re: LG OLED TV burn-in woes evident at trade show

    You can see it with Samsung Galaxy S/Note display phones in their brightly lit white themed showrooms. These brightly lit Samsung showrooms put said phones at high contrast brightness levels (which a lot of people do in real life for the "oooh colour" anyway) while using the circular clock display cover. Within a couple of weeks of the Galaxy phone launch, you can peer around the circular clock cover to see the circular clock display burn in. Notice that they have stopped attaching said circular covers.

    This is also a problem if you use blue light filters like F-lux / CF Lumens to reduce the blue light at night. Then the red sub-pixels will age prematurely. Note that a lot of people do their night reading/browsing in bed etc.

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    Re: LG OLED TV burn-in woes evident at trade show

    Quote Originally Posted by shaithis View Post
    That's image retention, rather than burn in though.

    Burn in is when its stuck there for good. Many screens suffer image retention of some degree or another, bizarrely my really old Panny plasmas never had any IR issues, Sky paused, games with HUDs, no problems.....it seems to be the newer kit that is suffering more.
    Very bizarre as all my ancient panny plasma's do have burnt in images. TH-42 PH9 has both IR and burn in images, mainly from the Wii, Sky & Xbox 360. And the Panasonic TX-P42G20B has burn in from the Sky pause/play logo. I think you must look after them very well, mine have been abused by the kids & the wife !!

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    Re: LG OLED TV burn-in woes evident at trade show

    Quote Originally Posted by LSG501 View Post
    Company who has a vested interest in Nanodot technology as used in the Samsung tv has a oled display that just happens to have one of the most publicised issues.....hmm, think I'd want some independent testing before believe everything being said about the LG tv.

    I'm pretty sure I could force burn in by just using a high output of the exact same image for 3 weeks 24 hours a day, hell I remember the days when lcd's had 'burn in' issues if left on for too long. There's also an easier way to 'fake it' when turned on and that's just to have an transparent image overlay in that corner when doing the 'graphical work' being displayed.
    Hit the nail on the head here.. "quantum dot developer Nanosys". Isn't quantum dot a direct rival of OLED? Something LG has invested in, while Samsung has invested in "quantum dot" LCD's, called QLED? Nanosys, which Samsung is a major funder of the company..

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    Re: LG OLED TV burn-in woes evident at trade show

    Quote Originally Posted by Savas View Post
    Quote Originally Posted by LSG501 View Post
    Company who has a vested interest in Nanodot technology as used in the Samsung tv has a oled display that just happens to have one of the most publicised issues.....hmm, think I'd want some independent testing before believe everything being said about the LG tv.

    I'm pretty sure I could force burn in by just using a high output of the exact same image for 3 weeks 24 hours a day, hell I remember the days when lcd's had 'burn in' issues if left on for too long. There's also an easier way to 'fake it' when turned on and that's just to have an transparent image overlay in that corner when doing the 'graphical work' being displayed.
    Hit the nail on the head here.. "quantum dot developer Nanosys". Isn't quantum dot a direct rival of OLED? Something LG has invested in, while Samsung has invested in "quantum dot" LCD's, called QLED? Nanosys, which Samsung is a major funder of the company..
    ^ This. Please Hexus, tag infomercials as infomercials.

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