Touch screen base material with transparent electroconductive film
A technology of transparent conduction and transparent substrate, which is applied to the conductive layer on the insulating carrier, electrical digital data processing, metal material coating technology, etc., and can solve problems such as difficult-to-touch screens and difficult-to-process tin oxide films
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Embodiment 1
[0063] ZnO, In 2 o 3 , SnO 2 The powdered reagents were mixed with each other in a certain ratio with a mortar to obtain the composition shown in Table 1. These powder mixtures are cold pressed into compacts, and the compacts are sintered to obtain sputtered screens. The sintered screen was used to deposit films on glass plates by DC magnetron sputtering over a period of time to obtain the film thicknesses shown in Table 1. As a result, a substrate having a transparent conductive film having a surface resistance of 1,600Ω / □ and a transmittance of 94% was obtained. In other words, the film-coated substrate is very transparent while retaining the desired resistance value.
Embodiment 2 to 6
[0065] The method of attaching the transparent conductive film to the glass plate is the same as that of Example 1 except that the composition of the screen electrode is changed. As shown in Table 1, the samples thus obtained had moderate surface resistance ranging from 500 to 5,000Ω and transmittance of 90% or higher, respectively. The samples obtained in Examples 1 to 6 each combined high transmittance, moderate surface resistance, and satisfactory processability in electrode formation, and were particularly preferable samples of the substrate according to the present invention. These samples were rated as ⊚ in the comprehensive evaluation.
Embodiment 7 to 10
[0067] The method of attaching the transparent conductive film to the glass plate is the same as that of Example 1 except that the composition of the screen electrode is changed. As shown in Table 1, the samples thus obtained each had a transmittance of 91%. However, the surface resistances of the samples obtained from Examples 7, 9 and 10 were 320Ω, 220Ω and 390Ω, respectively, which are slightly lower than the lower limit of the moderate resistance range shown above. It can be found that although the effect is slightly inferior in terms of energy saving, the ON / OFF operation can be effectively performed without failure. On the other hand, the sample obtained in Example 8 had a transmittance of 92%, which was not lower than that of glass, and a surface resistance of 9,800Ω, which was slightly higher than the upper limit of the moderate resistance range shown above. However, this sample was able to ensure electrical connection when the transparent electrodes were in contact i...
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Abstract
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