LCD displays..NOT monitors

Trying to work out what the CC would be for a small LCD display made especially to fit into an air handling device.
85 28 seems to describe Monitors and this is too small to be called that.

It is important as 8528 59… attracts 14% duty.
But a part to be incorporated in production of a unit 84 29 39 is just 1.7%

Did you also look at Commodity information for 9013803000 ?

No I did not see this. Thanks very much.
It is actually a part to be included in a device rather than the device itself but I can see it now in Chapter 90 -33
Big help!