Surprise inside a QLED TV
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- čas přidán 27. 07. 2024
- Taking apart a TCL QLED TV with quantum dots inside we found some other interesting optical materials. This LCD TV contains both quantum dots and phosphors along with a unique lens design for optimizing performance.
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Finally a CZcams channel that shows more than just TV reviews but actually shows you what’s inside and how they work it’s brilliant
Please try to teardown of the mini LED TCL TV
I hope to do a miniLED someday soon. I need to find one first!
@@NanoPalomaki maybe TCL or Hisense, they aren't expensive. Don't forget to make experiment with the TV how to cut the bezel to make it seamless (if possible)
I appreciate these tear-downs!
Thanks!
Would love to see a mini-led teardown
Please do mini led it will be fun
Incredibly cool videos! Keep it up!
Glad you enjoyed it! I have at least one more planned in the near future (Samsung QLED), then I'll be on the hunt for the next few sacrifices!
this is a really good video and i would suggest putting the model number in the description for more easily searchable results. i really wanted to see the local dimming at work though.
I’ll start to put in model numbers, good idea. With this tv I could not get into the operating system to feed it content so no way to do the local dimming trick.
man how on earth did you get that frame pulled apart? Mine feels like I'm ripping steel!
Put on some leather gloves and PULL! Some heat might help too.
Hi Matt!
I noticed that the green QD emission was broader than the red, even with the YAG "removed". That seems odd to me, unless it's intentionally a bit broader to be targeted at increased brightness.
YAG was/is widely used in LED backlights for the rec.709 gamut. It's cheap and bright. Maybe it's also there as a backup in case the QD reliability fails?
Yes, one would think green would be more narrow (if possible) to improve gamut, but it could be at the price of brightness (depending on the PWL). Cheap, bright, and could be a creative way to compensate for any number of optical artifacts I suppose, but no way it is only as a backup to the QDs. If the QDs fail, then the whole display would be done. The amount of light from the YAG is just so small. This is why I think it is there to reduce blue hot spots or something.
The addition of phosphor is very interesting. I don’t think that IP could be a reason all on its own; there must be some utility to it. I’d be interested to know the excitation spectrum of the QD film to find out if the QDs are pumped at all by the YAG emission.
Good point Danielle, the YAG phosphor probably does excite the QDs a little bit (red QD more than green QD), but far less than the blue LED does since QD absorption tends to increase at shorter wavelengths.
@@NanoPalomaki Nice work! Can you plz teardown sony led 9 series?
Would love to get my hands on one, do you know anyone willing to part with one?
TCL 55c715 back light LEDS