整合式壓力感測器檢測晶片

Abstract

隨著壓力感測器市場的成長，晶圓級壓力感測器檢測也日益重要。對現今壓力感測器的製造商而言，快速且價格合理的檢測方式為迫切的需求。本論文利用空氣軸承的概念，提出一以微機電技術為基礎的新壓力感測器檢測方式。藉由在待測的壓力感測器與檢測晶片間創造一微小的間隙，其高度約為數十微米，利用空氣黏滯性產生檢測時所需的壓力，同時由以微機電製程製作的懸臂樑探針讀取壓力感測器的輸出訊號。爲了實現此ㄧ檢測概念，本論文完成兩種不同製程檢測晶片並搭配相對應的量測架構，其一是利用KMPR光阻搭配電鍍的方式製作懸臂樑探針，最後利用SU-8光阻做為檢測晶片的底材。另ㄧ是使用玻璃晶片為底材，在玻璃晶片上以AZ P4620光阻以及KMPR光阻搭配電鍍方式製作懸臂樑探針。以本研究為基礎，在未來將可實現一快速且價格合理的壓力感測器檢測方式。

As the pressure sensor market grows, the wafer-level sensor testing becomes more and more important. A fast and cost-effective testing method is currently needed for the present pressure sensor manufacture. Inspired by the concept of air-bearing, a new testing method based on MEMS technology is proposed in this thesis. By creating a tiny gap between the pressure sensor to be tested and the testing chip, the pressure required to stimulate the pressure sensor is caused by the viscosity of air, and the electrical output is read out by cantilever-type MEMS probe. Two kinds of cantilever-type MEMS probes used in this thesis are fabricated by different fabrication process. One is fabricated by electroplating with KMPR and SU-8 photoresists molds, and the SU-8 photoresist is used for substrate. The other is fabricated on glass substrate by electroplating with AZ P4620 and KMPR photoresist. Each type of MEMS type probes correspond to different experiment apparatuses. Based on the study in this thesis, a fast and cost effective testing method can be realized.