Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
FILM CARRIER
Document Type and Number:
Japanese Patent JPH04109642
Kind Code:
A
Abstract:

PURPOSE: To eliminate a plating malfunction even if a photoresist surface is damaged to cause a disconnection by adding an auxiliary conductive band in parallel with a conductive band to an inside proximity position of the band.

CONSTITUTION: An auxiliary conductive band 10 is additionally formed in parallel with a conductive band 3 of a film carrier obtained by pattern-molding pads 8, 8' and leads 5, 6 at the band parallel to through hole rows and between both the bands 3 inside sprocket through holes 2, at an inside proximity position of the band 3. In this case, even if a photoresist surface is damaged so that a disconnection 11 due to etching is formed, the pads 8, 8' corresponding to the disconnection 11 can be energized from adjacent plated wirings 9 at both sides through the band 10, and no plating malfunction occurs. Thus, its productivity can be improved.


Inventors:
SASAKI JUN
HATAKEYAMA YASUSHI
KATAOKA WATARU
Application Number:
JP22889290A
Publication Date:
April 10, 1992
Filing Date:
August 30, 1990
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SUMITOMO METAL MINING CO
International Classes:
H01L21/60; H05K3/24; (IPC1-7): H01L21/60
Attorney, Agent or Firm:
Taiji Shinohara (1 person outside)