> it's just difficult to regulate (backlight) LEDs over a huge brightness range without affecting color accuracy or causing excessive flickering.
It's not difficult. Any problem is designer laziness. Only real problem is if white light source used have some nonlinearity with white balance, but having accurate current control isn't all that hard, just gotta use actual current control instead of just PWMing CC source with no filtering whatsoever.
The problem is exactly what you mentioned after
> Nobody looks at the minimum spec if it's even provided.
nobody tests for that so consumer can't even find the good ones easily.
It's not difficult. Any problem is designer laziness. Only real problem is if white light source used have some nonlinearity with white balance, but having accurate current control isn't all that hard, just gotta use actual current control instead of just PWMing CC source with no filtering whatsoever.
The problem is exactly what you mentioned after
> Nobody looks at the minimum spec if it's even provided.
nobody tests for that so consumer can't even find the good ones easily.