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Technology Stocks : OLED Universal Display Corp
OLED 146.86-1.6%Oct 30 3:59 PM EDT
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To: ChicagoBridge7 who wrote (20824)11/25/2018 6:25:26 PM
From: R. Monte Gu4 Recommendations

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brasspenny
ChicagoBridge7
ladcad
Savant

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Your suppositions about "burn-in" and about Samsung make a lot of sense to me. Does anyone out there have any similar thoughts or corroboration/rumors to that effect ? If your suppositions are correct, that would mean that the "burn-in" problem could be corrected if all three (R-G-B) emissive materials had the same degradation rates and longer lifes. Then there would no longer be a need for the topical software solutions that have had negative side effects.

That implies to me that a longer-life phosphorescent blue by UDC could solve the "burn-in" problem. Does that sound right ?

Right. The longer the half-life, the less is the burn-in. If all the emitter layer T90's are at 1,000,000 hours, then there shouldn't be a burn-in issue.

Beyond improving the half-life of the emitter/host, another way to increase durability is to stack layers. That's the proposed Samsung design by report, 3 layers. Slacker's (I think it was Slacker) pick-up about the new blue host from a company that has a JV with UDC is intriguing. I previously suggested that Samsung would use a fluorescent blue layer with 2 PHOLED blue layers, but I wonder if, instead, there are enough deep blue photons in a blue PHOLED to make a deep blue pixel using a color filter? Then, Samsung could use 3 layers of blue PHOLED in its TV.
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