Methods for determining the resistive states of resistive change elements
First Claim
1. A method for determining a resistive state of a resistive change element in a resistive change element array, said method comprising:
- selecting a resistive change element from a plurality of resistive change elements in a resistive change element array, wherein each resistive change element is electrically connected to a bit line of a plurality of bit lines in said resistive change element array and a word line of a plurality of word lines in said resistive change element array;
setting a potential amount of current permitted to be supplied for determining a resistive state of said resistive change element;
supplying an amount of current for determining said resistive state of said resistive change element to said bit line electrically connected to said resistive change element, wherein said amount of current for determining said resistive state of said resistive change element is limited to a set amount of current, and wherein said amount of current for determining said resistive state of said resistive change element is regulated by said potential amount of current permitted to be supplied until said potential amount of current permitted to be supplied exceeds said set amount of current; and
determining said resistive state of said resistive change element based on said potential amount of current permitted to be supplied and said set amount of current.
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Abstract
Devices and methods for determining resistive states of resistive change elements in resistive change element arrays are disclosed. According to some aspects of the present disclosure the devices and methods for determining resistive states of resistive change elements can determine resistive states of resistive change elements by sensing current flow. According to some aspects of the present disclosure the devices and methods for determining resistive states of resistive change elements can determine resistive states of resistive change elements without the need for in situ selection devices or other current controlling devices. According to some aspects of the present disclosure the devices and methods for determining resistive states of resistive change elements can reduce the impact of sneak current when determining resistive states of resistive change elements.
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Citations
20 Claims
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1. A method for determining a resistive state of a resistive change element in a resistive change element array, said method comprising:
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selecting a resistive change element from a plurality of resistive change elements in a resistive change element array, wherein each resistive change element is electrically connected to a bit line of a plurality of bit lines in said resistive change element array and a word line of a plurality of word lines in said resistive change element array; setting a potential amount of current permitted to be supplied for determining a resistive state of said resistive change element; supplying an amount of current for determining said resistive state of said resistive change element to said bit line electrically connected to said resistive change element, wherein said amount of current for determining said resistive state of said resistive change element is limited to a set amount of current, and wherein said amount of current for determining said resistive state of said resistive change element is regulated by said potential amount of current permitted to be supplied until said potential amount of current permitted to be supplied exceeds said set amount of current; and determining said resistive state of said resistive change element based on said potential amount of current permitted to be supplied and said set amount of current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for determining a resistive state of a resistive change element in a resistive change element array, said method comprising:
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selecting a resistive change element from a plurality of resistive change elements in a resistive change element array, wherein each resistive change element is electrically connected to a bit line of a plurality of bit lines in said resistive change element array and a word line of a plurality of word lines in said resistive change element array; setting a potential amount of current permitted to be supplied for determining a resistive state of said resistive change element; supplying an amount of current for determining said resistive state of said resistive change element to said bit line electrically connected to said resistive change element, wherein said amount of current for determining said resistive state of said resistive change element is limited to a set amount of current, and wherein said amount of current for determining said resistive state of said resistive change element is regulated by said potential amount of current permitted to be supplied until said potential amount of current permitted to be supplied exceeds said set amount of current; and determining said resistive state of said resistive change element based on an amount of current flowing through said resistive change element and said amount of current for determining said resistive state of said resistive change element. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification