IP Library Granted Patent US 9,148,958
Granted Patent B2
US 9,148,958 · App. 14/587,556 · Granted Sep 29, 2015

Circuit board and electronic device

Inventors: Yoshiyuki Hiroshima (Kawasaki, JP); Akiko Matsui (Kawasaki, JP); Mitsuhiko Sugane (Kawasaki, JP); Takahide Mukoyama (Kawasaki, JP); Tetsuro Yamada (Kawasaki, JP); Takahiro Ooi (Kawasaki, JP)
Assignee: FUJITSU LIMITED
H05K1/181H05K1/18H05K2201/099
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Quick Facts
Patent No.
US 9,148,958
App. No.
14/587,556
Granted
Sep 29, 2015
Kind
B2
Abstract

An electronic device includes an electronic component including a plurality of terminals and a circuit board on which the electronic component is mounted. The circuit board includes a board body, a plurality of electrode pads arranged on the board body, each of the electrode pads being connected to each of the terminals by solder, a first solder resist formed on the board body and having a plurality of first openings, each of the first openings accommodating each of the electrode pads, and a second solder resist formed on the first solder resist and having a plurality of second openings, each of the second openings being larger than each of the first openings and communicating with each of the first openings.

Claims (18)

1. An electronic device comprising:

a circuit board;

a first electronic component mounted on a first region of the circuit board and including a plurality of first terminals; and

a second electronic component mounted on a second region of the circuit board and including a plurality of second terminals; and

wherein the circuit board includes;

a board body,

a plurality of first electrode pads arranged on the board body, each of the first electrode pads being connected to each of the first terminals by solder,

a plurality of second electrode pads arranged on the board body, each of the second electrode pads being connected to each of the second terminals by solder,

a first solder resist formed on the board body and having a plurality of first openings and a plurality of second openings, each of the first openings accommodating each of the first electrode pads and each of the second openings accommodating each of the second electrode pads, and

a second solder resist selectively formed on the first solder resist and having a plurality of third openings, each of the third openings being larger than each of the first openings and communicating with each of the first openings.

2. A circuit board comprising:

a board body;

a plurality of first electrode pads arranged on the board body;

a plurality of second electrode pads arranged on the board body;

a first solder resist formed on the board body and having a plurality of first openings and a plurality of second openings, each of the first openings accommodating each of the first electrode pads and each of the second openings accommodating each of the second electrode pads; and

a second solder resist formed on the first solder resist and having a plurality of third openings, each of the third openings being larger than each of the first openings and communicating with each of the first openings,

wherein the board body includes a first region on which a first electronic component is mounted and a second region on which a second electronic component is mounted, and

the second solder resist is selectively formed in the first region.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 17, 2025
From: FUJITSU LIMITED
To: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
Reel/Frame 073964/0516 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 27, 2024
From: FUJITSU LIMITED
To: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
Reel/Frame 069454/0333 →
Priority Claims (1)
JP 2011-013309 · Jan 25, 2011 · national
Continuity (2)
Division 13300701 · Nov 21, 2011
Related Publication 20150116962A1 · Apr 30, 2015