US 12,087,722 B2
Anisotropic electrically conductive film
Yasushi Akutsu, Utsunomiya (JP)
Assigned to DEXERIALS CORPORATION, Tokyo (JP)
Filed by DEXERIALS CORPORATION, Tokyo (JP)
Filed on Apr. 12, 2019, as Appl. No. 16/383,234.
Application 16/383,234 is a continuation of application No. 15/988,065, filed on May 24, 2018, granted, now 10,304,796.
Application 15/988,065 is a continuation of application No. 15/523,438, granted, now 10,026,709, issued on Jul. 17, 2018, previously published as PCT/JP2015/082221, filed on Nov. 17, 2015.
Claims priority of application No. 2014-232934 (JP), filed on Nov. 17, 2014.
Prior Publication US 2019/0237426 A1, Aug. 1, 2019
This patent is subject to a terminal disclaimer.
Int. Cl. H01L 23/00 (2006.01)
CPC H01L 24/32 (2013.01) [H01L 24/29 (2013.01); H01L 24/83 (2013.01); H01L 2224/29082 (2013.01); H01L 2224/29499 (2013.01); H01L 2224/32225 (2013.01); H01L 2224/83203 (2013.01); H01L 2224/83851 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An anisotropic electrically conductive film comprising:
an electrically insulating adhesive base layer; and
a plurality of electrically conductive particles disposed in a plurality of electrically conductive particle groups on the electrically insulating adhesive base layer, wherein
the electrically insulating adhesive base layer contains an electrically insulating filler,
each electrically conductive particle group is configured from two or more of the electrically conductive particles,
the electrically conductive particles in each electrically conductive particle group are regularly disposed within that electrically conductive particle group, and
at least one of:
a number of electrically conductive particles within each electrically conductive particle group regularly changes among the electrically conductive particle groups,
a distance between the electrically conductive particles within each electrically conductive particle group regularly changes among the electrically conductive particle groups,
an angle relative to a longitudinal direction of the film of one row of electrically conductive particles in each electrically conductive particle group regularly changes relative to adjacent electrically conductive particle groups, or
an angle relative to the longitudinal direction of the film of each polygonal shape of a plurality of polygonal shapes, each of which includes electrically conductive particles of a respective electrically conductive particle group, regularly changes with respect to adjacent electrically conductive particle groups.