Title:
CIRCUIT BOARD, SEMICONDUCTOR DEVICE, POWER CONVERSION DEVICE, AND MOVABLE BODY
Document Type and Number:
WIPO Patent Application WO/2020/174535
Kind Code:
A1
Abstract:
This invention facilitates visual confirmation of whether a first electronic component has generated heat independent of whether a second electronic component has generated heat, or whether a circuit board has been exposed to heat. The first electronic component and the second electronic component are mounted on a printed circuit board. A thermochromic resin contacts the first electronic component but does not contact the second electronic component. A visual change occurs in the thermochromic resin when the temperature rises. Alternatively, an electronic component is mounted on the printed circuit board. The thermochromic resin contacts the printed circuit board but does not contact the electronic component. A visual change occurs in the thermochromic resin when the temperature rises.
Inventors:
FUKUSHIMA YUTA (JP)
Application Number:
PCT/JP2019/007068
Publication Date:
September 03, 2020
Filing Date:
February 25, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H05K3/28
Foreign References:
| JPS5931268U | 1984-02-27 | |||
| US20150173178A1 | 2015-06-18 | |||
| JPH01112123A | 1989-04-28 | |||
| JP2006005669A | 2006-01-05 | |||
| JPH01157501A | 1989-06-20 |
Attorney, Agent or Firm:
YOSHITAKE Hidetoshi et al. (JP)
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