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X-ray detector correction device and correction method

A technology of calibration device and detector, applied in measurement devices, instruments, using wave/particle radiation, etc., can solve the problems of measurement error analysis and correction without bubbles in solder joints, and achieve the effect of simple structure and convenient use

Inactive Publication Date: 2020-03-17
BOSCH AUTOMOTIVE PROD SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no solution for analyzing and correcting the measurement error of the solder joint air bubbles of the X-ray detector

Method used

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  • X-ray detector correction device and correction method
  • X-ray detector correction device and correction method
  • X-ray detector correction device and correction method

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Embodiment Construction

[0021] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0022] figure 1 Shown is a calibration device 100 for calibrating an X-ray detector according to an embodiment of the present invention, through which the calibration device 100 can be used to inspect the surface mount components (Surface MountedDevices, SMD) mounting of the X-ray detector in the SMT production process The ability to detect air bubbles in the solder joints when soldering to the PCB through the reflow process after the printed circuit board. Specifically, the calibration device 100 includes at least one surface mount component 110 , a calibration sheet 120 and a printed circuit board 130 . Wherein, the surface mount component 110 has a soldering end. In this embodiment, the surface mount component 110 is a quad flat no-lead (QFN) component or a column grid array (LGA) component with hidden solder connections.

[0023] The correc...

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Abstract

The invention discloses an X-ray detector correction device, which comprises at least one surface mounting element which has a plurality of welding terminals;; aplurality of correction sheets which are made of a metal material, wherein each correction sheet is provided with an open hole penetrating through the correction sheet, and each correction sheet is provided with a first area ratio of the known area of the open hole to the area of the correction sheet; anda printed circuit board, wherein the correction sheet is fixed on the printed circuit board, the surface mounting element is fixed onthe printed circuit board, and each welding end of the surface mounting element covers the correction sheet.

Description

technical field [0001] The invention relates to a calibration device for an X-ray detector and a calibration method for calibrating the X-ray detector by using the calibration device. Background technique [0002] In the SMT (Surface Mount Technology, Surface Mount Technology) production process, after reflow soldering, there will often be bubbles in the solder joints at the bottom of the mounted components, which will affect the long-term stability of the solder joints. In SMT production, an X-ray (X-ray) detector (Automated X Ray Inspection, AXI) is often used to check the content of air bubbles in the solder joints after the parts are mounted, for example, to check the air bubble area ratio in the solder joints (the number of air bubbles in the solder joints) Bubble area accounts for the percentage of solder joint area), the principle is to use the characteristics that X-rays can penetrate materials with low density and can be absorbed by materials with high density to ob...

Claims

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Application Information

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IPC IPC(8): H05K3/34G01N23/18
CPCH05K3/341G01N23/18H05K3/34G01B15/00G01N23/04
Inventor 李智
Owner BOSCH AUTOMOTIVE PROD SUZHOU