Patent ID: 8373220

Claim:
A NAND type flash memory for increasing data read/write reliability, comprising: a semiconductor substrate unit including at least one semiconductor substrate; a base unit including a first dielectric layer formed on the semiconductor substrate; and a plurality of data storage units adjacent to each other and formed on the first dielectric layer by a semiconductor manufacturing process, wherein each data storage unit includes at least two floating gates formed on the first dielectric layer and separated from each other by a predetermined distance, at least two inter-gate dielectric layers respectively formed on the two floating gates and respectively corresponding to the two floating gates, at least two control gates respectively formed on the two inter-gate dielectric layers and respectively corresponding to the two inter-gate dielectric layers, a second dielectric layer fowled on the first dielectric layer, between the two floating gates, between the two inter-gate dielectric layers, and between the two control gates, and a third dielectric layer formed on the first dielectric layer and surrounding and tightly connecting with the two floating gates, the two inter-gate dielectric layers, and the two control gates.