The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 2019
Filed:
Mar. 02, 2018
Toshiba Memory Corporation, Minato-ku, Tokyo, JP;
Akira Tanimoto, Yokohama Kanagawa, JP;
Hideko Mukaida, Kunitachi Tokyo, JP;
Naoko Numata, Shinagawa Tokyo, JP;
Kenji Miyawaki, Chigasaki Kanagawa, JP;
TOSHIBA MEMORY CORPORATION, Tokyo, JP;
Abstract
A semiconductor device includes a package substrate having a first surface and a second surface. A semiconductor chip is provided on the first surface of the package substrate and includes a semiconductor element. An adhesive is provided between the semiconductor chip and the package substrate. A metal bump is provided on the second surface. A package substrate is a multilayer substrate that includes first to fourth wiring layers and first to third resin layers. CTE1<CTE2<CTE3<CTE4 is satisfied where coefficients of thermal expansion of the semiconductor chip, the first to third resin layers, the first to fourth wiring layers, and the adhesive are CTE1 to CTE4, respectively. EM1>EM3>EM2>EM4 is satisfied where elastic moduli of the semiconductor chip, the first to third resin layers, the first to fourth wiring layers, and the adhesive are EM1 to EM4, respectively.