Invention Grant
- Patent Title: X-ray photoemission system for 3-D laminography
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Application No.: US17721191Application Date: 2022-04-14
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Publication No.: US11619596B2Publication Date: 2023-04-04
- Inventor: David L. Adler
- Applicant: David L. Adler
- Applicant Address: US CA San Jose
- Assignee: David L. Adler
- Current Assignee: David L. Adler
- Current Assignee Address: US CA San Jose
- Agent Franklin Schellenberg
- Main IPC: G01N23/04
- IPC: G01N23/04 ; H01J1/78 ; H01L27/02 ; H01L23/498 ; G21K1/00 ; G01N23/044 ; G21K7/00

Abstract:
A system is disclosed for the examination and inspection of integrated devices such as integrated circuits using 3-D laminography. X-rays are transmitted through the integrated device, and are incident on a photoemissive structure that absorbs x-rays and emits electrons. The electrons emitted by the photoemissive structure are shaped by an electron optical system to form a magnified image of the emitted electrons on a detector. This magnified image is then recorded and processed. In some embodiments, the incidence angle of the x-rays is varied to gather multiple images that allow internal three-dimensional structures of the integrated device to be determined using computed laminography. In some embodiments, the recorded images are compared with reference data to enable inspection for manufacturing quality control.
Public/Granted literature
- US20220236199A1 X-RAY PHOTOEMISSION SYSTEM FOR 3-D LAMINOGRAPHY Public/Granted day:2022-07-28
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