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:
Aug. 12, 2025
Filed:
Sep. 05, 2023
Lapis Technology Co., Ltd., Yokohama, JP;
Tomomi Miyano, Yokohama, JP;
LAPIS Technology Co., Ltd., Yokohama, JP;
Abstract
A semiconductor device includes: a first semiconductor chip including a first internal circuit, first flip-flop circuits connected to the first internal circuit, first selectors, and first electrodes connected to an output of the first selector; first connection conductors; and a second semiconductor chip including second electrodes connected to the first electrode via the first connection conductor and a second internal circuit connected to at least one second electrode. At least one of the first and second semiconductor chips includes a test circuit. The test circuit includes a first detection circuit receiving a signal from each second electrode, a first selector control circuit controlling the selection of the first selector, and an expected value generation circuit. Each first selector includes a signal input receiving a signal from at least one first flip-flop circuit and an expected value input receiving an expected value signal from the expected value generation circuit.