Patent ID: 11868055
Assignee: THE INSTITUTE OF OPTICS AND ELECTRONICS, THE CHINESE ACADEMY OF SCIENCES
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 2:
3. The device according to claim 2, wherein the three-point Z-direction fine displacement mechanism comprises:
a mechanism bottom plate, wherein a flange plate is arranged in a middle portion of the mechanism bottom plate;
a plurality of piezoelectric ceramic motor assemblies evenly distributed on the mechanism bottom plate and configured to micro-adjust an inclination angle of the vacuum substrate-carrying stage in the Z-axis direction, level the vacuum substrate-carrying stage, and implement the fine adjustment of the distance between the substrate on the vacuum substrate-carrying stage and the mask plate;
a universal ball support arranged above the mechanism bottom plate and connected with the piezoelectric ceramic motor assembly;
at least one extension spring connecting the mechanism bottom plate and a plate member on which the universal ball support is arranged, and configured to reset the plate member;
an elastic reed arranged above the universal ball support and connected with the plurality of piezoelectric ceramic motor assemblies;
a flange adapter arranged on the elastic reed, connected with the flange plate through the elastic reed and a circular hole in the plate member, and configured to adjust the angle of the vacuum substrate-carrying stage in the plane where the X-axis and the Y-axis are located based on a driving of the flange plate; and
a substrate-carrying stage support surface, wherein a center of the substrate-carrying stage support surface is connected with the flange adapter and connected with the elastic reed through the flange adapter, and the substrate-carrying stage support surface is configured to place the vacuum substrate-carrying stage.