The utility model belongs to display technical field, specifically discloses a kind of double gear shaft formula screen shaft and double screen display, double gear shaft formula screen shaft includes shell and two interval settings gear shaft, the axle end of each gear shaft reaches to shell inside and is rotatably connected with shell, the other axle end of each gear shaft reaches to shell outside and forms connecting end, wheel seat is commonly set on two gear shafts, wheel seat is located in shell, cylindrical gear is rotatably installed in wheel seat, cylindrical gear is located between two gear shafts and is engaged with the gear section of two gear shafts.The screen shaft of the utility model is not only compact, stable, high-precision, so that screen shaft can realize accurate angle adjustment, and have enough
carrying capacity.The double screen display includes support plate and two screens, support plate is located between two screens, the both ends of support plate are rotatably connected with two screens by double gear shaft formula screen shaft, realize flexible, stable, accurate
relative motion between screen.