Capacitive screen technology capable of realizing multi-point touch control by single layer of film
A multi-touch, single-layer film technology, applied in the field of capacitive screens, can solve the problems of difficult mass production of capacitive screens and large overall thickness of capacitive screens, and achieve the effects of reducing costs, reducing total thickness, and reducing processes
Inactive Publication Date: 2013-12-25
无锡宇宁智能科技有限公司
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However, due to the need to etch and print on the two-layer PET film separately, the minimum thickness is 0.45mm, resulting in a larger overall thickness of the capacitive screen, and the cost is much higher than that of a single-layer film structure. In some low-cost but multi-point It is difficult to mass-produce touch capacitive screens
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[0013] The present invention will be further described below in conjunction with drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only parts related to the present invention are shown in the drawings but not all content.
[0014] Please refer to figure 1 as shown, figure 1 The process flow chart of the multi-touch capacitive screen provided by the single-layer film provided by the embodiment of the present invention.
[0015] In this embodiment, the single-layer film realizes the multi-touch capacitive screen process specifically includes the following steps:
[0016] Step S101 , using magnetron sputtering to coat both sides of the single-layer PET film with indium tin oxide (ITO) material, and then cutting the PET film into the size required by the screen printing mach...
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The invention discloses a capacitive screen technology capable of realizing multi-point touch control by a single layer of film. The technology comprises the following steps of A. respectively plating indium tin oxide material at the two sides of the single layer of polyethylene terephthalate (PET) film by a magnetron sputtering method, and then cutting the PET film into the size needed by a screen printing machine; B. respectively printing an acid-proof protective layer at each of the two sides of the single layer of PET film in a silk-screen way, baking the acid-proof protective layers and then etching the PET film by a wet etching process to obtain an indium tin oxide figure; C. respectively printing conductive silver paste at the two sides of the PET film in a silk-screen way to obtain a non-visual routing path. The two sides of the single layer of PET film are etched and printed, so that the multi-point touch control of a capacitive screen can be realized, and the total thickness of the capacitive screen can be reduced; furthermore, the technological process is reduced, and the cost of the single layer of film is reduced by 50% compared with that of a double-layer film structure.
Description
technical field [0001] The invention relates to the technical field of capacitive screens, in particular to a capacitive screen technology for realizing multi-touch with a single-layer film. Background technique [0002] At present, the multi-touch solution of the traditional film structure in the industry is to use the cover glass + double-layer film structure, etch and silver paste printing on the two-layer PET film respectively, and then paste the two-layer PET film together with optical glue , the functional sheets that make up our desired bilayer membrane structure. However, due to the need to etch and print on the two-layer PET film separately, the minimum thickness is 0.45mm, resulting in a larger overall thickness of the capacitive screen, and the cost is much higher than that of a single-layer film structure. In some low-cost but multi-point It is difficult to mass-produce touch capacitive screens. Contents of the invention [0003] The purpose of the present in...
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Inventor 吴国峰
Owner 无锡宇宁智能科技有限公司