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

Claim 7:
8. A multifunctional lithography device, comprising: a passive vibration isolation system, an XY-direction macro-motion system, a Z-direction macro-micro three-point leveling system, a mask frame, a three-axis alignment optical path system, an ultraviolet light source system, a control system (7), a coarse displacement closed-loop system, an angular displacement mechanism, an angular displacement linear motor, a three-point Z-direction fine displacement mechanism, a vacuum substrate-carrying stage mechanism, a linear guide rail anti-deviation mechanism, a Z-direction coarse displacement rotary motor, a first linear actuator, a second linear actuator (15-2), a three-point incremental grating ruler, a compression spring, a crossed roller bearing, piezoelectric ceramic motor assembly, a motion base plate, a first linear guide rail, a second linear guide rail, a Y-direction motion plate, an X-direction motion plate, piezoelectric motor mounting accessories, a piezoelectric motor, a universal ball support, an elastic read, a flange adapter, a substrate-carrying stage support surface and an extension spring; wherein the passive vibration isolation system comprises 4 evenly and symmetrically arranged vibration isolation legs and a marble platform having a thickness of 200 mm, a bottom layer of the XY-direction macro-motion system is the motion base plate arranged on the passive vibration isolation system, the first linear guide rail is arranged on a mounting plane of the motion base plate to carry the Y-direction motion plate, so that the Y-direction motion plate is pushed by the first linear actuator to implement a Y-direction macro displacement, the second linear guide is mounted on a mounting plane of the Y-direction motion plate to carry the X-direction motion plate, so that the X-direction motion plate is pushed by the second linear actuator arranged on the Y-direction motion plate to implement an X-direction macro displacement, the Z-direction macro-micro three-point leveling system implements placing a substrate on the substrate-carrying stage and aligning marks of the substrate and a mask plate, and comprises the coarse displacement closed-loop system arranged on the XY-direction macro motion system, the linear guide rail anti-deflection mechanism ensures that the Z-direction coarse displacement rotary motor only output a Z-direction displacement on a rotary cam, the three-point incremental grating ruler reads an actual Z-direction motion displacement to implement a closed-loop control to the coarse displacement rotary motor, the compression spring (17) reduces a Z-direction static load of the Z-direction coarse displacement rotary motor through the angle displacement mechanism supported by the compression spring, the angular displacement linear motor pushes the three-point Z-direction fine displacement mechanism to move as a whole, the crossed roller bearing is configured as a rotating support structure to implement an overall angular displacement motion of the three-point Z-direction fine displacement mechanism, the piezoelectric ceramic motor assembly is constituted by the piezoelectric motor mounting accessory and the piezoelectric motor, and mounted on the Z-direction fine displacement mechanism as a whole, the piezoelectric motor is mounted on the universal ball support through a ball connection, upper and lower connection plates of the piezoelectric motor implement a micro force return of the piezoelectric motor using the extension spring, the elastic reed is fixedly connected with the piezoelectric motor, a central flange is connected to a lower plane of the substrate-carrying stage support surface, so that an entire vacuum substrate-carrying stage mechanism is evenly rebounded; the vacuum substrate-carrying stage mechanism completes an adsorption and an air blow for the substrate in a multi-hole manner, the mask frame fixes the mask plate using three manual knobs in a pulling type fixing and mask clamping manner, the three-axis alignment optical path system comprises a three-axis symmetrical displacement system, a telephoto objective lens, a CCD camera and an overall optical path system, a dual telephoto objective lens is mounted in the three-axis symmetrical displacement system to implement an XYZ direction displacement of an alignment objective lens, and is imaged to a PC end by the CCD camera to judge an alignment of marks of the mask plate and the substrate, the ultraviolet light source system comprises a complete set of optical path system, and positions an exposure location in a closed-loop manner by a Y-direction displacement and extension using a 365 nm light source, so as to achieve a substrate exposure effect, and a control system is configured to control the device.