Method for driving semiconductor device

US8976571B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8976571-B2
Application numberUS-201113274649-A
CountryUS
Kind codeB2
Filing dateOct 17, 2011
Priority dateOct 20, 2010
Publication dateMar 10, 2015
Grant dateMar 10, 2015

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  1. Title

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  2. Abstract

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  5. First independent claim

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Abstract

Official abstract text for this publication.

It is an object to obtain a memory element (DRAM) storing multilevel data easily. The amount of charge accumulated in a capacitor of a memory element (DRAM) is controlled by changing the potential of a wiring (a bit line), which is used for writing data to the memory element (DRAM), in a period in which a transistor included in the memory element (DRAM) is on. Thus, multilevel data stored in the memory element (DRAM) can be obtained without a complex configuration of a semiconductor device including the memory element (DRAM).

First claim

Opening claim text (preview).

The invention claimed is: 1. A method for driving a semiconductor device comprising a word line, a bit line and a memory cell comprising a transistor and a capacitor, wherein a gate of the transistor is electrically connected to the word line, wherein one of a source and a drain of the transistor is electrically connected to the bit line, and wherein the other of the source and the drain of the transistor is electrically connected to a first electrode of the capacitor, the m…

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What does patent US8976571B2 cover?
It is an object to obtain a memory element (DRAM) storing multilevel data easily. The amount of charge accumulated in a capacitor of a memory element (DRAM) is controlled by changing the potential of a wiring (a bit line), which is used for writing data to the memory element (DRAM), in a period in which a transistor included in the memory element (DRAM) is on. Thus, multilevel data stored in th…
Who is the assignee on this patent?
Kamata Koichiro, Semiconductor Energy Lab
What technology area does this patent fall under?
Primary CPC classification G11C11/4094. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Mar 10 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).