US 12,237,118 B2
Capacitor array and composite electronic component
Takeshi Furukawa, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Nagaokakyo (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Apr. 25, 2023, as Appl. No. 18/306,554.
Application 18/306,554 is a continuation of application No. 17/947,238, filed on Sep. 19, 2022, granted, now 11,670,462.
Application 17/947,238 is a continuation of application No. 16/815,126, filed on Mar. 11, 2020, granted, now 11,495,416.
Claims priority of application No. 2019-067972 (JP), filed on Mar. 29, 2019; and application No. 2019-131951 (JP), filed on Jul. 17, 2019.
Prior Publication US 2023/0260718 A1, Aug. 17, 2023
Int. Cl. H01G 9/26 (2006.01); H01G 9/012 (2006.01); H01G 9/10 (2006.01); H01G 9/15 (2006.01)
CPC H01G 9/26 (2013.01) [H01G 9/012 (2013.01); H01G 9/10 (2013.01); H01G 9/15 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A solid electrolytic capacitor element comprising:
an anode plate having a first main surface and a second main surface which oppose each other in a thickness direction thereof, and made of a valve-action metal;
a porous layer on at least one main surface of the anode plate;
a dielectric layer on a surface of the porous layer;
a cathode layer including a solid electrolyte layer on a surface of the dielectric layer;
an insulating layer on the surface of the dielectric layer where the cathode layer is not provided, the insulating layer containing a resin; and
a stress relaxation layer containing a resin and an insulating filler, wherein
the stress relaxation layer contains more filler than the insulating layer, and
in a plan view of the first main surface, at least a portion of the stress relaxation layer overlaps with the anode plate, and the portion of the stress relaxation layer does not overlap with the cathode layer.