Patent ID: 11875857
Assignee: CHINA FLASH CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method for programming a memory, comprising at least:
1) providing a memory structure with a floating gate, and grounding a source of the memory structure;
2) forming an electric field between a drain and a bulk of the memory structure by applying voltages to the drain and the bulk, generating electron-hole pairs, and generating primary electrons, wherein the voltage applied to the bulk is lower than the voltage applied to the drain;
3) making holes accelerate downward under the action of the electric field and collide with the bulk in the memory structure within a predetermined time to generate secondary electrons; and
4) forming a vertical electric field between a gate and the bulk of the memory structure by applying voltages to the gate and the bulk, wherein the voltage applied to the bulk is lower than the voltage applied to the gate, to enable the secondary electrons to further collide with the electron-hole pairs under the action of the vertical electric field to generate tertiary electrons, and the secondary electrons and the tertiary electrons are superimposed and injected into the floating gate of the memory structure to complete a programming operation.