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Di J.-K.,Jiangsu Center for Photon Manufacturing Science and Technology | Di J.-K.,Jiangsu University | Di J.-K.,Suzhou Delphilaser Co. | Zhou M.,Jiangsu Center for Photon Manufacturing Science and Technology | And 8 more authors.
Gongneng Cailiao/Journal of Functional Materials | Year: 2012

An investigation was conducted on ultraviolet laser beam etching of Ag film in the covered area of a touch screen. Advantages of Laser etching process were discussed by comparison with traditional printing process. Based on the described principle of laser etching, a UV laser system was designed and built for the purpose of the investigation, on which many experiments were performed. The results show that the 355 nm UV laser can efficiently etching out Ag films with one pass and with scanning speed of 1500 mm/s when laser power was 10 W. A fully functional silver line pattern with a minimum line width of 10 μm was successfully obtained; the etched lines were straight with clean edge; there was a negligible heat-affected area and no damage of the substrate was observable. The investigation demonstrated that the UV laser beam etching of the silver film on the touch screen product can increase yield, raise quality and be environmental friendly. Source

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