開關切換驅動方法Switching driving method used for a driving system

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

13/713,347

專利證號

US 8,757,751 B2

專利獲證名稱

開關切換驅動方法Switching driving method used for a driving system

專利所屬機關 (申請機關)

國立交通大學

獲證日期

2014/06/24

技術說明

隨著半導體技術與材料科學的發展，工業用印刷技術逐漸成為先進製程技術研發重點之一，例如3D噴蠟機、PCB板打樣噴墨機、TFT噴墨製程等，而壓電噴墨頭為高電壓低電流之電容性負載，若能藉由解析度高又具自由度的調變波型方式，藉此補償噴墨頭中各噴孔間的變異性，將是有利於提高噴墨製程的精準度與均勻性。 本創意將提出一種可調變的開關驅動方法，使用開關電路搭配開關策略，達成產生任意波型之目的，降低開關所造成損失，提高多通道、多組任意波型驅動訊號的調變能力。 The advent of micro/nano machining technology and material science, printing techniques gradually become feasible for many industrial processes and products such as the production of TFT transistors, 3D printing (additive manufacturing), solar cell electrode process, biomedical chip printing process etc. The printing head using piezo-electric material is the most popular one which can be viewed as a capacitive load. Traditional linear amplifier to drive the head is too bulky and costly that controlling individual head is commercially difficult. Through modulating the waveform to drive semiconductor switching devices, it is possible to reduce the system cost and allows individual control of the head. This will not only compensate nozzle manufacturing variability but also improve the process uniformity.

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