電容式觸控面板感測單元抗靜電能力最佳化研究

Abstract

本論文主要是在探討目前觸控面板，在製作過程中，為避免面板在製程中膜面刮傷導致觸控單元電性失效，往往會在製程中的各站點運送途中加上製程保護膜，以降低人員或機台對於觸控面板刮傷的機率。然而，增加了保護膜可降低刮傷的機率，卻又因線上人員的手法的差別，或工作環境溫濕度控制不當而造成觸控感測單元遭到靜電炸傷的風險。 防止靜電炸傷的主要方式，從元件設計的觀點不外乎是電性的防堵及宣洩。論文中使用了目前最常用的觸控感測單元圖樣，並在此圖樣為基礎的情況下從降低電阻(增加電性宣洩能力)及增加電容(增加防堵能力)兩個方向去設計不同的感測單元，而後做成較小的觸控面板。並搭配靜電槍測試各種不同觸控感應測試單元的抗靜電能力。 最後本論文的實驗結果中發現，不論是在X方向，或Y方向上降低電阻，或是改變電容的配置，都可以改善觸控面板的抗靜電能力。

This paper discusses the current touch panel process development. In order to avoid the touch panel scratches in the manufacturing process, it would attached a protect film on the touch panel at each process stop. However, the protective film can reduce the chance of scratching, but the differences in personnel practices, or the temperature and humidity of working environment made the touch panel suffered ESD issue.

The main way to prevent the touch panel of ESD damage is releasing and shielding. We used the commonly touch sensor pattern, and this pattern is at the basis of the case from the lower the resistance and the change the capacitance to design different touch sensor unit. Then we made a small touch panel in each condition and used an electrostatic discharge simulator to test antistatic ability of each samples.

Finally, the results show in the experiment, whether resistance is reduced in the X direction, the Y direction, or change the setting of capacitance can improve the antistatic ability of the touch panel.