運用穩健設計方法提高觸控面板開發效益 －以觸控晶片為例

Utilizing Robust Design Methodology to Enhance the Performance of Touch Panel Development - A Case Study of Touch Controller IC

葉統融(Tung-Jung Yeh)

指導教授 ： 陳建良

國立清華大學/工學院/工業工程與工程管理學系碩士在職專班/碩士(2020年)

摘要

儘管全球智慧型手機和平板電腦市場的出貨量和需求不斷增加，但觸控模組平均出貨價格和利潤卻一直下降，因此更需要開發設計團隊將穩健思維內化於設計概念，強化新產品開發到達目標的過程、提高開發績效及產品品質才能夠成長獲利。

本研究運用穩健設計方法，透過專案團隊專業判斷影響觸控面板開發及品質的要因關係，接著分析開發過程並以觸控晶片角度決定控制因子及雜音因子，以直接的實驗與分析決定能夠控制的設計參數水準來追求高績效的開發流程及設計品質，以田口方法為核心之穩健設計，透過低成本的改善投入，解決觸控模組變異來達到新產品開發之效益，並以實證來歸納流程改善後的績效表現。

經由實例分析結果顯示，穩健設計方法的導入提升了產品設計與開發的效益，設計釋放給客戶的週期能節省至7個工作天，提升設計驗證合格率至90%，確保客戶的主開發流程能順利進行至下一階段；同時也能幫助客戶改善模組生產品質，節省每月報廢成本約$19,440美金，降低客戶抱怨、提高客戶滿意度。

關鍵字

穩健設計 ； 田口方法 ； 觸控晶片 ； 觸控面板 ； 電容式觸控

並列摘要

Although sale and demand of smartphone in the worldwide is still considerably increasing, however the average shipment price and profit of key component, touch modul, is declining continuously, therefore the development team must have a mindset that aims to design for robustness and strengthens the development process. This approach will be also beneficial to improve in terms of efficiency and quality.

This research applies the robust design methodology and investigates the cause-and-effect relationship which affects the design variation and production quality of the touch panel, furthermore, the control factor and noise factor are obtained based on touch controller firmware design knowledge, the excellent design performance can be obtained through handy experiment and analysis in early development stage.

By applying robust design with Taguchi method is a low-cost investment for reducing the variation to achieve remarkable efficiency of product development, the performance improvement is also summarized by an empirical evidence.

The result substantiates that the implementation of robust design can shorten the period of design release to 7 working days and improve the WHQL first-pass rate to 90%, furthermore, this approach can assist customer to improve the production quality, save the production cost caused by scarp about US$19,440 per month during the mass production and decline the complaint raised by customer and improve customer satisfaction.

並列關鍵字

Robust design ； Taguchi method ； Touch controller ； Touch panel ； Capacitive touch

參考文獻

英文文獻

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