Two-dimensional code manufacturing method based on laser exposure

Abstract

The invention discloses a two-dimensional code manufacturing method based on laser exposure, and belongs to the technical field of laser micromachining, and the manufacturing method comprises the steps: carrying out the five-time beam expansion of a light beam, and adding a power attenuation sheet in a light path system; adjusting the focal point of the light beam, focusing the focal point on the surface of the to-be-processed workpiece, accurately positioning through a CCD, drawing a two-dimensional code through software, and adjusting processing parameters to carry out exposure treatment on the to-be-processed sample; immersing the exposed sample in a developing solution, carrying out ultrasonic-assisted oscillation, cleaning the sample in an ultrasonic cleaner containing deionized water, and airing to obtain a developed sample; and immersing the developed sample into a copper etching solution, carrying out ultrasonic-assisted oscillation for 60 seconds, cleaning the sample, and naturally airing the sample to obtain a two-dimensional code sample. The method is high in processing efficiency, high in two-dimensional code definition, high in contrast ratio, convenient to quickly and reliably identify the two-dimensional code, and not easy to age.

Description

technical field [0001] The invention relates to the technical field of laser micromachining, in particular to a method for making a two-dimensional code based on laser exposure. Background technique [0002] In the industry, enterprises often need to carry out information management and anti-counterfeiting on the corresponding products during the production of display panels. Code, chemical solution corrosion QR code, etc. However, making two-dimensional codes on the surface of some display panels often has the following disadvantages: using a laser to directly etch a two-dimensional code may affect the function of the display panel due to the high energy density of the laser, and it is easy to generate smoke; After a long time, the two-dimensional code will fade, which will affect the recognition of the two-dimensional code; the use of chemical solution to corrode the two-dimensional code is not only harmful to the human body, but also causes environmental pollution. Ther...

AI Technical Summary

Problems solved by technology

However, making two-dimensional codes on the surface of some display panels often has the following disadvantages: using a laser to directly etch a two-dimensional code may affect the function of the display panel due to the high energy density of the laser, and it is easy to generate smoke; After a long time, the two-dimensional code will fade and affect the recognition of the two-dimensional code; the use of chemical solution to corrode the two-dimensional code is not only harmful to the human body, but also causes environmental pollution