LG B9 (OLED55B9) 4K OLED Preview

Discussion in 'LG TVs Forum' started by Phil Hinton, Jan 20, 2019.


    1. Phil Hinton

      Phil Hinton
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    2. logiclee

      logiclee
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      Interesting that it has a separate decontouring control as it was said last year that the A7 couldn't support decontouring and the B8 didn't have decontouring at all.
       
    3. lgans316

      lgans316
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      Old wine in a new bottle best describes 2019 features / tweaks.
       
    4. Stuart

      Stuart
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      I thought B8 was same as C8 in that they both can decontour but it's incorporated into mpeg NR setting. I've set my B8 to Auto & I'm sure it's decontoured quite a bit
       
    5. logiclee

      logiclee
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      According to a few reviews including Vincent Teoh the B8 with Alpha7 and the older LUT didn't offer decontouring.
       
    6. celle

      celle
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      New TCON-Board with 240Hz effectice refresh rate with 120Hz BFI, new subpixel structure with over 30% better aperture ratio and bigger red subpixel against image retention and BI, meaning also an better ABL or more brightness. White subpixel boost for SDR. Improved smooth gradiation function. 8K on the way (possible with the better fill rate) and first rollable screen (has much more impact for J6P than only picture quality). LGD also adopting MMG in 2019 that means cheaper prices for 65", 77" and also 48" on the way.

      For me it´s an huge upgrade to 2018, even hardware wise. The new 3.5ms MPRT with 120Hz BFI (not possible with 2018 hardware) could be the biggest feature and can solve OLED motion issues and make them better than LCD with BFI.

      AVForums needs to renew their test procedure for ABL differences! Not only 10% and 100% window, also 5%, 25%, 50% and 75%, even better a complete ABL chart like HDTVpolska.com:

      https://hdtvpolska.com/wp-content/uploads/2018/07/apl_c8.png

      An OLED with the same values at 10% and 100% can be much brighter only because of better ABL. Only measuring a value for 10% and 100% tells nothing about real world brightness.
      Also we need macroshots of the subpixel structure to show differences between the OLED generations and inch sizes. A better fill rate is the key for better brightness and avoiding burn in.
       
    7. logiclee

      logiclee
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      That's different to what many other sources are suggesting. Several sources are saying there's no panel spec change for 2019.
      The new subpixel structure and bigger red subpixel was introduced on the 2018 panels.

      From one preview of the C9
      The new C9 is very similar to its 2018 counterpart and the panel itself remains unchanged, aside from the addition of a new filter.

      Time will tell who is correct.
       
    8. GadgetObsessed

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      Thanks for the preview.

      "The B9 uses the same panel as the 2018 models but adds a new filter"

      Does this mean that the B9 uses a 2018 panel + new filter whereas the C9 , E9 and W9 use a 2019 panel? Or does it mean that the 2019 panel is the same as the 2018 one but with a new filter and all 2019 sets use the same panel?
       
    9. GadgetObsessed

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      Seeing if there has been any change in the sub-pixel structure/aperture is very simple. You just take a closeup shot of the screen with a macro lens on your camera. When you zoom into the image the sub-pixel structure is clearly visible. (You can even do this handheld - I have done it myself with a Sony A6300 and a 35mm macro lens.) Personally I would like to see this done in every OLED review.

      So why has nobody published a macro shot of the 2019 OLED screens shown at CES - do the manufacturers not allow journalists to take such photos?
       
    10. logiclee

      logiclee
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      According to Phil all 2019 sets use the 2018 panel with a new filter.
       
    11. celle

      celle
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      These sources said the same for the 2018 generation... It´s a new panel and with 120Hz BFI there exist also a new TCON board, that also means it´s a new panel and can´t be the same like 2018. You can´t purchase the 2019 panel without the new TCON controller. There is more to improve than only specs for 10% window and 100% window like improved lifetime and burn-in risk, ABL and motion performance. A new panel structure can keep the old specs by improving the lifetime and ABL brightness.
      Two OLED generations with the same specs in peak brightness and full white window can perfom completely different in brightness only of better ABL. Same for burn-in and motion.

      LesNumeriques.com did:

      https://dyw7ncnq1en5l.cloudfront.net/optim/news/82/82391/oled-2019-pixel.jpg
      Google Übersetzer

      OLED TVs: Technology Advancements Thread - Page 513 - AVS Forum | Home Theater Discussions And Reviews
       
      Last edited: Jan 23, 2019
    12. Doctor Smith

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      Has the b9 got the same innards as last years b8?
       

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