Device and method for etching silver paste conducting film layer on printing ink by pulse laser

A pulsed laser, conductive film technology, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of low selectivity, complex system, low yield and so on

Inactive Publication Date: 2012-06-20
SUZHOU DELPHI LASER
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a device and method for pulse laser etching silver paste conductive film layer on ink, which overcomes the complex system, low processing effic

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  • Device and method for etching silver paste conducting film layer on printing ink by pulse laser
  • Device and method for etching silver paste conducting film layer on printing ink by pulse laser

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Embodiment Construction

[0017] The invention adopts a high-frequency pulse laser, and the laser is focused on the silver paste and the ITO thin film material, so as to achieve the etching effect. The film layers of processing materials are glass substrate, black ink, total reflection dielectric film, ITO and silver paste from bottom to top. When the high-frequency pulsed laser is focused on the upper surface of the silver paste for etching, the silver paste and the ITO thin film material are vaporized under the action of the high-frequency pulsed laser to achieve the purpose of erosion after reaching the removal energy threshold of the material. , when the silver paste and ITO are completely etched, when the high-frequency pulsed laser acts on the total reflection dielectric film of the laser wavelength, according to the characteristics of the total reflection dielectric film, the laser is totally reflected, so that the black ink under the reflection film is protected from damage.

[0018] Such as ...

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Abstract

The invention relates to a device and a method for etching a silver paste conducting film layer on printing ink by pulse laser. An optical gate, a beam expander, and a semi-transparent semi-reflecting lens are sequentially arranged at the output end of a high-frequency pulsed laser; a first 1/2 wave plate and a second high-reflectivity lens are arranged at the output end of the semi-transparent semi-reflecting lens; a first Glan prism and a first high-reflectivity lens are sequentially arranged at the output end of the first 1/2 wave plate; the output end of the first high-reflectivity lens is provided with a first galvanometer field lens system; the output end of the first galvanometer field lens system is opposite to a four-axis high-accuracy platform; the output end of the second high-reflectivity lens is provided with a second 1/2 wave plate and a second Glan prism; the output end of the second Glan prism is provided with a third high-reflectivity lens; the output end of the third high-reflectivity lens is provided with a second galvanometer field lens system; and the output end of the second galvanometer field lens system is opposite to the four-axis high-accuracy platform. By the invention, silver paste and indium tin oxide (ITO) in a touch-screen product can be subjected to laser etching efficiently at high accuracy.

Description

technical field [0001] The invention relates to a device and a method for pulse laser etching a silver paste conductive film layer on ink, and belongs to the technical field of laser micromachining. Background technique [0002] A capacitive touch screen is generally composed of a cover glass, an upper-line conductive sensing film layer, and a lower-line conductive sensing film layer. Among them, the main function of the cover glass is to protect the capacitive sensing film layer below, and at the same time print black ink on the back edge of the cover glass. The functions of the surrounding ink mainly have the following three functions. The first is to be beautiful; the second is to The purpose of shielding the edge lines of the invisible area; the third is to facilitate the printing of graphic symbols such as product logos. Generally, there are two types of conductive sensing film substrates: PET and glass. Among them, although the PET sensing film layer is relatively t...

Claims

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Application Information

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IPC IPC(8): B23K26/36B23K26/06B23K26/16B23K26/42B23K26/03B23K26/046B23K26/064B23K26/067B23K26/362B23K26/70
Inventor 赵裕兴狄建科蔡仲云
Owner SUZHOU DELPHI LASER
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