DEVICE AND METHOD FOR DECIDING TRANSFER STATE OF PASTE

Title:

DEVICE AND METHOD FOR DECIDING TRANSFER STATE OF PASTE

Document Type and Number:

Japanese Patent JP2007305724

Kind Code:

A

Abstract:

To provide a device and a method for deciding the nondefective or defective of the transfer state of a flux in an electrode for an electronic part.

A brightness distribution is detected in a bump 11a with a transferred flux with a blended pigment changing the brightness of the bump 11a. The nondefective or defective of the transfer state of the flux is decided on the basis of a ratio of a region 11c displaying the brightness exceeding a threshold value TH to the region 11d displaying the brightness exceeding no threshold value TH. Accordingly, the nondefective or defective of the transfer state of the flux can be decided, and the trouble can be prevented in the joining of the electrode resulting from the defective transfer of the flux.

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Inventors:

KATO HIDEAKI
MURATA HIROSHI

Application Number:

JP2006131362A

Publication Date:

November 22, 2007

Filing Date:

May 10, 2006

Export Citation:

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Assignee:

MATSUSHITA ELECTRIC IND CO LTD

International Classes:

H05K3/34; B23K1/00; B23K3/00; H01L21/60; B23K101/42

Domestic Patent References:

JP2006019380A	2006-01-19
JP2003060398A	2003-02-28
JPH09270577A	1997-10-14
JPH02212747A	1990-08-23
JPH0448248A	1992-02-18
JPS6035573A	1985-02-23

Attorney, Agent or Firm:

Fumio Iwahashi
Hiroki Naito
Daisuke Nagano

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