CRT TV vs. flat screen image quality

[andy]

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[jr_tech]

Originally Posted by andy

That's not an issue for LG's system because instead of red green and blue OLEDs, they use white OLEDs with color filters. It's less efficient, but since it's the same OLED material for all three colors, they age uniformly.

They are still expensive, but the price is dropping quickly, and they've finally started to sell flat ones in a normal form factor that can be wall mounted. I hope they eventually start selling smaller TVs and computer monitors. Ultimately, they should be cheaper to make than an LCD if they can work out the manufacturing problems.

Samsung made an OLED TV that had RGB OLEDs, but it was only on the market for a short time. I'm not sure how they have aged.

So what is the projected life of the LG white OLED material... anybody here seen any data?

jr

[andy]

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[etype2]

Originally Posted by jr_tech

So what is the projected life of the LG white OLED material... anybody here seen any data?

jr

The lifespan of rgb OLED material has currently been extended to 45K hours to half life. That translates to a lifetime of over 10 years if a television were viewed 12 hours a day. Prototype green OLED has been extended to 198K hours to half life and blue 68K hours to half life.

As previously mentioned, LG uses white OLED with rgb filters. That should eliminate the low efficiency of others OLED colors, which is now almost a moot point. I have not found specific data on the life of LG's white OLED material.

The main problem now being worked on is how to improve the brightness of OLED to allow OLED to display HDR (high dynamic range) for the new 4K spec. Currently LCD still excels in brightness because it is non-emissive and the LED backlighting can be driven to higher levels. OLED is emissive and creates its own light without the need for backlighting. An individual OLED pixel can be turned on and off 100% allowing "infinite" contrast.