Air knife device and liquid knife device

The utility model discloses an air knife device and a liquid knife device, which relate to the technical field of display manufacturing and ensure uniformity and stability of fluid flow by increasing pressure of fluid injection. The air knife device or the liquid knife device comprises a chamber equipped with a knife hole on the lower part, wherein the knife hole is formed by a side wall and a first knife lip and a second knife lip which are disposed oppositely and distance between the first knife lip and the second knife lip is gradually narrowed down from top to bottom; and also comprises a diversion mechanism disposed inside the chamber, wherein the diversion mechanism comprises a first diversion sheet and a second diversion sheet which are disposed oppositely, the first diversion sheet and the second diversion sheet are respectively disposed on the first knife lip side and the second knife lip side, the distance between the lower parts of the first diversion sheet and the second diversion sheet is gradual