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:
May. 14, 1991
Filed:
Sep. 07, 1989
Jumpei Kumagai, Yokohama, JP;
Syuso Fujii, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
Element regions which are adjacent to each other in a channel width direction are displaced from each other in a channel length direction by 1/4 pitch. Cell plate electrodes are formed over the element regions through a capacitor insulation film to extend in an oblique direction. Groove portions formed in a step-form corresponding to the shape of the respective transistor forming regions of the element regions are each formed between corresponding two adjacent ones of the cell plate electrodes. Word lines are formed in a stripe configuration to extend in a channel width direction and used to directly apply potentials to the element regions. Contact holes are formed for contact hole opening preparation regions of the element regions. Bit lines are formed in a stripe configuration to extend in a length width direction and are connected to respective element regions (1) via the contact holes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile