Printing system and printing method
AssigneeSamsung Display Co., Ltd.
InventorEunseok Kim
Life of this patent
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Abstract
A printing system may include a printing module, a measurement device, and a correction device. The printing module performs printing processes on a substrate. The printing processes include a first printing process based on a first pulse number. The measurement device may obtain image data for the substrate before and after the first printing process. The correction device may use the image data to obtain information indicating a change in a separation between first and second reference marks on the substrate before and after the first printing process. The correction device may then determine a second pulse number based on the information and control the printing module to perform a second printing process that is based on the second pulse number.
Claims20
A printing system for printing on an upper surface of a substrate on which at least a first reference mark and a second reference mark spaced apart from the first reference mark are disposed, the printing system comprising:
- a printing module configured to perform a plurality of printing process on the upper surface of the substrate, the printing processes including a first printing process that is based on a first pulse number;
- a measurement device configured to obtain image data for the upper surface of the substrate before and after the first printing process;
- and
- a correction device configured to, based on the image data, obtain first distance change information change in a distance between the first reference mark and the second reference mark before and after the first printing process, change the first pulse number to a second pulse number, based on the first distance change information, and control the printing module to perform a second printing process of the plurality of printing processes performed on the upper surface of the substrate, the second printing process being based on the second pulse number.
A printing method comprising:
- obtaining a 1-1 distance between a first reference mark and a second reference mark disposed on an upper surface of a substrate;
- performing a first printing process based on a first pulse number corresponding to the 1-1 distance;
- obtaining a 1-2 distance between the first reference mark and the second reference mark after the first printing process;
- obtaining a second pulse number by correcting the first pulse number based on the 1-1 distance and the 1-2 distance;
- and
- performing a second printing process based on the second pulse number.
Dependencies are inferred from the claim text.