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. 28, 2018
Filed:
Jan. 11, 2018
Semiconductor Manufacturing International (Shanghai) Corporation, Shanghai, CN;
Chao Zhang, Shanghai, CN;
Yipeng Chan, Shanghai, CN;
Abstract
A mask read-only memory (M-ROM) device is provided. In an M-ROM device, a first layer having a first type doping is formed in a substrate. A plurality of buried lines is formed in the first layer of the substrate. The plurality of buried lines are arranged in parallel in a first direction and isolated from each other. An epitaxial growth process is used to form a second layer on the first layer of the substrate. A plurality of diodes is formed in the second layer. The plurality of diodes is arranged in an array. Each diode includes a first electrode having a second type doping and connecting with one of the plurality of buried lines, and a second electrode having a first type doping and located on the first electrode.