There's no banding, therefore your TV is correctly displaying what appears to be a 10-bit signal of some description.
(or the tone mapped version of the signal if it's a PQ-based HDR format. Which is still correct, just not complete).
That takes lots of different things , so you're probably not going to be able to pick out the contribution from the bit depth of the LCD panel specifically.
If there's no banding on the sources you display then you can say the LCD panel's bit depth is enough to keep up with the other hardware on the TV for those signals, which is all that matters.