應用實驗設計法於整合式觸控面板偏貼製程之最佳化參數研究

A Research of Optimization Parameter For Polarizer Lamination Process of On-Cell Touch Panel By Applying DOE Method

蔡貝珞(Pei-Lo Tsai)

指導教授 ： 張國華

中原大學/電機資訊學院/工業與系統工程研究所/碩士(2016年)

https://doi.org/10.6840/cycu201600032

摘要

近年來因無線網路及智慧型顯示器的崛起,在市場上移動式觸控電子產品需求日益蓬勃,在日新月異的技術改進上,對於觸控顯示器生產技術的改進是業界所投入的重要目標。
為提供現今市場消費者在觸控式電子產品更輕及薄之需求,整合式觸控面板(On-Cell Touch)技術在薄膜電晶體液晶顯示器(Thin Film Transistor Liquid Crystal Display,TFT-LCD),將觸控線路設計將觸控線路外掛在TFT-LCD顯示面板上玻璃表面，此設計除能夠具有極佳的光學表現,並能應用於平板電腦(Tablet)及超輕薄筆記型電腦 (Ultra Notebook) 上。
其觸控面板製程中在偏光片貼附技術(Polarizer Lamination)上,由於上偏光片在貼附時所接觸的玻璃表面為觸控線路膜層, 故觸控面板表面潔淨度不佳會導致觸控線路在傳導時發生短路(Short)與開口(Open) 不良,而在觸控面板的非觸控線路區亦會造成畫面暗點(Dark Point)及偏貼異物(POL Particle)不良,影響顯示畫面品質,觸控偏貼製程一直是電測所需克服改善的難題, 本研究透過使用實驗設計法(DOE method)探討最佳化參數尋找解決方案,找出最佳化的生產條件,以期降低偏光片貼附表面潔淨度不良所造成觸控電路導通異常,並確保觸控式面板的製程品質及量測能力能達到要求,提供穩定品質的產品。
根據實驗結果,在低的清潔速度(Clean speed)搭配高的純水壓力(DI water Pressure) 、 風刀壓力 (Air Knife Pressure)、溫度(Air Knife Temperature)和低的偏光片貼附速度(Lamination speed)、壓力(Lamination Pressure)及間隙(Lamination gap)可有效提升觸控面板的表面潔淨度,降低觸控偏貼製程電測及外觀不良,使生產良率達到應改善之水準。

關鍵字

實驗設計法 ； 量測系統分析 ； 整合式觸控面板 ； 偏光片貼附

並列摘要

In recent years, because of the emergence of wireless network and the intelligent display products, the demands of touch electronic products in the market are arising day by day. In rapid progress of techniqual improvement, the improvement for touch display production technique is an important target.
For providing lighter and thinner needs of the touch type electronic products to present market consumers, the integration type touch pad (On-Cell Touch) technique is applied in the TFT-LCD (Thin Film Transistor Liquid Crystal Display). The touch circuit is designed to hang on the TFT-LCD glass surface of front-panel. This design not only has the best optics performance but also can be applied on the Tablets and the Ultra Notebooks.
Polarizer lamination technique is applied in the manufacturing process of touch panel. While the top polarizer is laminating, it gets in touch the glass surface which is touch circuit film layer. Therefore, the poor purity in the surface of touch pad will cause the circuit become short and the open damage while conducting. and dark point with POL particle damage defect in display Pattern. The touch polarizer lamination process is always the difficulty to overcome and to improve during electricity measurement. This research uses the DOE method (experiment design method) to look for the optimization parameter and to find out the optimization production condition. For reducing the abnormal conducting of touch circuit from the poor purity in the surface of polarizing lamination. Meanwhile it ensures to be able to reach the request in the quality of the touch pad manufacturing process and measurement ability and to provide the products with stable quality.
According to the experiment results, the low clean speed matches high DI water pressure, air knife temperature, low lamination speed, lamination pressure, and lamination gap can effectively promote the purity in the surface of a touch pad, as well as can reduce the bad quality of electricity measurement and bad appearance in the touch pad manufacturing process.

並列關鍵字

Design of experiment ； MSA ； On-Cell Touch ； Polarizer Lamination

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