Title

Development of High-Frequency Ultrasound Transducers and Signal Processing Algorithms for Integrated Circuit Inspection

DGIST Authors

Yoonseong Jang ; Jin Ho Chang ; Jaesok Yu

Advisor

장진호

Co-Advisor(s)

Jaesok Yu

Issued Date

2024

Awarded Date

2024-02-01

Citation

Yoonseong Jang. (2024). Development of High-Frequency Ultrasound Transducers and Signal Processing Algorithms for Integrated Circuit Inspection. doi: 10.22677/THESIS.200000724875

Type

Thesis

Description

ultrasound imaging;integrated circuit inspection;ultrasound transducer;synthetic aperture technique

Table Of Contents

Ⅰ. INTRODUCTION 1

II. Method 4
2.1 Screw type lens fabrication 4
2.2 Lens noise simulation 5
2.3 Conventional and screw type lens transducer 7
2.4 Synthetic aperture focusing and coherence factor weighting 8

III. Transducer Evaluation 13
3.1 Pulse-Echo measurement 13
3.2 Resolution measurement 15
3.3 Noise comparison 17

IV. DBC Imaging 18
4.1 CT image 18
4.2 Data processing 19
4.3 Epoxy target imaging 20
4.4 Image comparison of lens type 22
4.5 Image comparison after signal processing (SAF, SACF) 23

V. Discussions and Conclusions 25

References 26

URI

http://hdl.handle.net/20.500.11750/48111
http://dgist.dcollection.net/common/orgView/200000724875

DOI

10.22677/THESIS.200000724875

Degree

Master

Department

Department of Electrical Engineering and Computer Science

Publisher

DGIST

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