Electrostatic Discharge Mitigation Systems and Methods

Touch sensitive display technologies (e.g., integrated touch-display pixel-based systems) are evolving to contain more analog and digital circuits inside the panel itself instead of the traditionally simple thin-film transistors. This improves the display characteristics but makes those circuits mor...

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Hauptverfasser: Hildebrandt, Eric A, Zhang, Ce, Acharya, Nikhil, Wang, Stanley B, Azzellino, Giovanni, Shaeffer, Derek K, Yang, Wooseung, Huang, Bin, Zhang, Ling, Yao, Weijun, Velayuthan, Rajesh, Moreno Galbis, Pablo, Jiang, Yongjie, Jin, Jiayi, Bae, Hopil, Bae, Young Don, Jen, Henry C, Lu, Xiang, Farrokh Baroughi, Mahdi
Format: Patent
Sprache:eng
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Zusammenfassung:Touch sensitive display technologies (e.g., integrated touch-display pixel-based systems) are evolving to contain more analog and digital circuits inside the panel itself instead of the traditionally simple thin-film transistors. This improves the display characteristics but makes those circuits more vulnerable to the impact of external ESD strikes, which can degrade the user experience. This disclosure describes a series of circuits and techniques to mitigate the impact of these discharges on front of screen artifacts and potential false touches. These circuits and techniques may include: performing configuration-only panel updates independently of the image refresh rate, improving the in-panel memory circuits to make them resistant to unexpected pin toggles via disabling of a write path in response to a read clock, implementing a pin corruption detector and implementing a supply injection detector.