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Printed wiring board

A wiring board and metal plate technology, which is applied to printed circuits, printed circuits, printed circuit components, etc., can solve the problems of increased manufacturing costs, achieve the effects of reducing quantity, improving large current supply, and realizing heat dissipation performance

Active Publication Date: 2017-10-31
DENSO TEN LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to an increase in the manufacturing cost of the printed wiring board and the product in which the printed wiring board is constructed

Method used

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  • Printed wiring board
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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0020] figure 1 is a perspective view showing the structure of the printed wiring board 1 according to the first embodiment. The printed wiring board 1 according to the present embodiment is effectively used for a printed wiring board used in an electronic controller mounted on a vehicle (for example, an electronic controller for controlling large power / high load when controlling a motor or the like). On the other hand, the use of the printed wiring board 1 according to the present embodiment is not limited to electronic controllers.

[0021] Such as figure 1 As shown, the printed wiring board 1 according to the first embodiment includes a metal plate 2 and a wiring member 3 arranged on or over the back surface of the metal plate 2 . Metal plate 2 includes current path parts 2 a and 2 b , which are main current paths that supply large current to electronic part 20 , and heat dissipation part 2 c that dissipates heat generated by electronic part 20 .

[0022] Here, in the pr...

no. 2 example

[0060] Figure 6 is a top view showing a printed wiring board 1C according to the second embodiment.

[0061] The difference between the printed wiring board 1C according to the second embodiment and the printed wiring board 1 according to the first embodiment is the circuit structure. A conductive plate 9 is added on or above the back of the wiring member 3 to realize different circuit structures.

[0062] Such as Figure 6 As shown, a printed wiring board 1C according to the second embodiment includes a metal plate 2 , a wiring member 3 and a conductive plate 9 . The metal plate 2 includes: current path parts 2a and 2b as main current paths of the plurality of electronic parts 20a to 20d; and heat dissipation parts 2c and 2d that dissipate heat generated by the electronic parts 20a to 20d.

[0063] Furthermore, the current path parts 2a and 2b and the heat dissipation parts 2c and 2d are integrally formed with the wiring member 3 in the same layer. Therefore, like the pr...

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Abstract

A printed wiring board according to an embodiment includes a metal plate and a wiring member. The meal plate includes a current path part, which is a main current path of an electronic part mounted on or above a front surface of the metal plate, and a heat radiation part, which radiates heat generated from the electronic part. The wiring member is arranged on or above a back surface of the metal plate. The current path part and the heat radiation part are in the same layer to be integrally formed with the wiring member.

Description

technical field [0001] Embodiments discussed herein relate to printed wiring boards. Background technique [0002] Generally, when an electronic part that generates a large amount of heat caused by a large supply current is mounted on a printed wiring board, a heat dissipation member is embedded in the printed wiring board at a position where the electronic part is mounted to dissipate heat generated by the electronic part by using the heat dissipation member. Heat generated (for example, Japanese Patent Laid-Open No. 05-304223). [0003] However, when heat is dissipated to the outside of the printed wiring board by using the above-described embedded heat dissipation member, it is also necessary to additionally provide a heat sink or the like on or above the rear surface of the printed wiring board. In addition, in order to supply a large current to electronic components from the outside, it is also necessary to additionally provide a bus bar, that is, a terminal for a larg...

Claims

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Application Information

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IPC IPC(8): H01L23/14H01L23/367
CPCH01L23/142H01L23/3677H05K1/0204H05K1/0206H05K1/0209H05K1/0265H01L2924/13055H05K2201/10166H05K2201/10272H01L2924/13091Y02E60/10H01L2924/00H01L24/40H01L24/48H01L24/49H01L29/7811H01M10/052H01M10/46
Inventor 赤熊贵安原孝文本冈直人长谷川悟山岸聪室贺慎也安田和正
Owner DENSO TEN LTD
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