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. 31, 2022
Filed:
Sep. 02, 2021
China Flash Co., Ltd., Shanghai, CN;
Hong Nie, Shanghai, CN;
Jingwei Chen, Shanghai, CN;
CHINA FLASH CO., LTD., Shanghai, CN;
Abstract
A method for programming a B4 flash memory includes: floating a source of a P-channel flash memory device; separately applying voltages to a gate, a drain, and a bulk of the P-channel flash memory device, and injecting holes into the bulk, so that electrons are gathered in the drain to form primary electrons; separately applying voltages to the drain and the bulk, so that an electric field is formed between the drain and the bulk, where the holes accelerate downward under the action of the electric field and impact the bulk in the P-channel flash memory device to generate secondary electrons; and separately applying voltages to the gate and the bulk of the P-channel flash memory device, so that the secondary electrons form tertiary electrons under the action of the electric field in a vertical direction, where the tertiary electrons are superposed with the primary electrons to be injected into a floating gate.