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Dual-layer LCD is best thought of as a separate technology from tandem OLED, due to being transmissive rather than emissive. In many respects, it surpasses OLED

Dual-layer LCD is best thought of as a separate technology from tandem OLED, due to being transmissive rather than emissive. In many respects, it surpasses OLED, which is why mastering monitors used in Hollywood still employ this technology. Unfortunately, the poor efficiency and excessive energy consumption/heat output have hindered its adoption in the consumer market.

jsheard 2y ago
> In many respects, it surpasses OLED, which is why mastering monitors used in Hollywood still employ this technology. Flanders Scientific were the main champions of dual LCDs in that market, and even they have phased out all of their dual LCD models in favor of QD-OLED ones now. I think they just brute force through OLEDs usual brightness limits by actively cooling the panel.
- rbanffy 2y ago
  And speaking of high-brightness LED panels, I can swear I got a tan from one during a conference where the panel was sitting with the back towards the panel. Those things are hot and very bright.
- porphyra 2y ago
  Dual LCDs also have poor brightness since a lot less light gets through the two layers. That can be overcome by a much stronger backlight, which produces tons of heat that require active cooling.
- kuschku 2y ago
  Sony also makes dual-layer LCDs, they even introduced a new model in 2023: https://pro.sony/en_GB/products/broadcastpromonitors/bvm-hx3110 https://pro.sony/en_GB/products/broadcastpromonitors/bvm-hx3...
  - jsheard 2y ago
    Good to know, but that spec sheet neatly demonstrates the efficiency challenges of dual-layer LCD. That's a 31" panel which burns up to 610 watts!
    - formerly_proven 2y ago
      That's probably illegal to sell in the EU?
      - wmf 2y ago
        It's a professional reference monitor not a TV so maybe there's an exception.
      - kuschku 2y ago
        Those rules and regulations only apply to consumer products, business/professional products are exempt. This product is obviously not a consumer product.
    - anamexis 2y ago
      Also, it costs $25,000. But that might not be related to it being a dual-layer LCD, but rather other exacting tolerances for professional mastering use.

jsheard 2y ago

> In many respects, it surpasses OLED, which is why mastering monitors used in Hollywood still employ this technology. Flanders Scientific were the main champions of dual LCDs in that market, and even they have phased out all of their dual LCD models in favor of QD-OLED ones now. I think they just brute force through OLEDs usual brightness limits by actively cooling the panel.

rbanffy 2y ago
And speaking of high-brightness LED panels, I can swear I got a tan from one during a conference where the panel was sitting with the back towards the panel. Those things are hot and very bright.
porphyra 2y ago
Dual LCDs also have poor brightness since a lot less light gets through the two layers. That can be overcome by a much stronger backlight, which produces tons of heat that require active cooling.
kuschku 2y ago
Sony also makes dual-layer LCDs, they even introduced a new model in 2023: https://pro.sony/en_GB/products/broadcastpromonitors/bvm-hx3110 https://pro.sony/en_GB/products/broadcastpromonitors/bvm-hx3...
- jsheard 2y ago
  Good to know, but that spec sheet neatly demonstrates the efficiency challenges of dual-layer LCD. That's a 31" panel which burns up to 610 watts!
  - formerly_proven 2y ago
    That's probably illegal to sell in the EU?
    - wmf 2y ago
      It's a professional reference monitor not a TV so maybe there's an exception.
    - kuschku 2y ago
      Those rules and regulations only apply to consumer products, business/professional products are exempt. This product is obviously not a consumer product.
  - anamexis 2y ago
    Also, it costs $25,000. But that might not be related to it being a dual-layer LCD, but rather other exacting tolerances for professional mastering use.