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

Claim 0:
1. A multifunctional lithography device, comprising:
a vacuum substrate-carrying stage, wherein the vacuum substrate-carrying stage is configured to place a substrate, adsorb the substrate on the vacuum substrate-carrying stage by controlling an airflow, and provide a vacuum environment for the substrate and a mask plate, so as to control a gap between the substrate and the mask plate;
a mask frame arranged above the vacuum substrate-carrying stage and configured to fix the mask plate;
a substrate-carrying stage motion system arranged below the vacuum substrate-carrying stage and configured to adjust a position of the vacuum substrate-carrying stage, so that a distance between the substrate and the mask plate satisfies a preset condition;
an ultraviolet light source system arranged above the mask plate and configured to generate an ultraviolet light for lithography; and
a three-axis alignment optical path system configured to align the ultraviolet light with the mask plate;
wherein the substrate-carrying stage motion system comprises:
an XY-direction macro motion system configured to adjust displacements of the vacuum substrate-carrying stage in an X-axis direction and a Y-axis direction;
a Z-direction macro-micro three-point leveling system arranged on the XY-direction macro motion system, and configured to implement a coarse adjustment and a fine adjustment of a displacement of the vacuum substrate-carrying stage in a Z-axis direction,
wherein the XY-direction macro motion system comprises:
a motion base plate;
a first linear guide rail arranged on the motion base plate and having a direction of a Y-axis direction;
a Y-direction motion plate arranged on the first linear guide rail;
a second linear guide rail arranged on the Y-direction motion plate and having a direction of an X-axis direction perpendicular to the Y-axis direction;
an X-direction motion plate arranged on the second linear guide rail;
a first linear actuator arranged on the motion base plate, and configured to move the Y-direction motion plate along the first linear guide rail; and, a second linear actuator arranged on the Y-direction motion plate, and configured to move the X-direction motion plate along the second linear guide rail,
wherein the Z-direction macro-micro three-point leveling system is arranged on the X-direction motion plate and comprises:
a coarse displacement closed-loop system and an angular displacement mechanism, wherein the coarse displacement closed-loop system acts on the angular displacement mechanism, so that the vacuum substrate-carrying stage is displaced in the Z-axis direction, and the coarse displacement closed-loop system comprises:
a Z-direction coarse displacement rotary motor configured to adjust the displacement of the vacuum substrate-carrying stage in the Z-axis direction perpendicular to the X-axis direction and the Y-axis direction, wherein the coarse displacement closed-loop system feeds back and controls an operation of the Z-direction coarse displacement rotary motor according to a Z-direction displacement actually generated by the angular displacement mechanism;
a linear guide rail anti-deviation mechanism configured to ensure that the Z-direction coarse displacement rotary motor only outputs a Z-direction displacement; and, a three-point incremental grating ruler configured to read a Z-direction displacement actually generated by the Z-direction coarse displacement rotary motor.