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Patent Searching and Data


Title:
PRINTED WIRING BOARD
Document Type and Number:
Japanese Patent JPH04180290
Kind Code:
A
Abstract:

PURPOSE: To improve the mounting strength between a component and a substrate by enlarging inwardly lands of electrode terminals for connection on every other land provided on both sides of the component.

CONSTITUTION: A bonding area of land is increased by inwardly extending every other bonding lands of juxtaposed electrode terminals 2a, by a length of l0. With this arrangement, where there is a minor displacement of a component, the electrode terminal 2a will not project much. Extending the land of the electrode terminal, in the longitudinal direction thereof, results in an increased area of the land of the terminal, thereby leading to an improvement in the mounting strength and the stability of a bonding yield. Thus, the enhancement of the mounting strength and the stability of the bonding yield can be achieved.


Inventors:
SHIMIZU ICHIRO
SASAKI TAKAHIDE
KUMAGAI MOTOO
KATOU KUNIAKI
Application Number:
JP30712690A
Publication Date:
June 26, 1992
Filing Date:
November 15, 1990
Export Citation:
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Assignee:
CANON KK
International Classes:
H05K3/34; H05K1/11; (IPC1-7): H05K3/34
Attorney, Agent or Firm:
Takaharu Takita