Can you always be sure a certain vendor always supplies a certain LCD type?
And curiously, do you know which vendors manufacture TN or IPS?
My wild guess: SHARP=TN, SAMSUNG=IPS.
Yes, I can.
The two vendors the 3DS knows about are JDI (1), and SHARP (0xC).
SHARP=TN
JDI=IPS
Given IPS is JDI's thing, and SHARP only produces TN...