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    • 5. 发明公开
    • 가변 저항 메모리 소자 및 그 형성방법
    • 电阻可变存储器件及其形成方法
    • KR1020100048198A
    • 2010-05-11
    • KR1020080107236
    • 2008-10-30
    • 삼성전자주식회사
    • 오규환임동현박순오안동호박영림
    • H01L27/115H01L21/8247
    • H01L27/1052G11C13/0004G11C2213/52G11C2213/72H01L27/2409H01L27/2463H01L45/06H01L45/1233H01L45/126H01L45/144H01L45/1683H01L45/143
    • PURPOSE: A resistance variable memory device and a method for forming the same are provided to selectively reduce the interfacial resistance between a variable resistance pattern and a lower electrode by minimizing the area to which the lower electrode and the variable resistance pattern are contacted. CONSTITUTION: A first interlayer insulation layer(120) is formed on a semiconductor substrate. A lower electrode is formed in the first interlayer insulation layer. The rectangular upper side of the lower electrode is expanded to a first direction. A variable resistance pattern(160) is formed on the lower electrode. A first insulation layer(142) which covers the lower electrode is formed on the first interlayer insulation layer. The first insulation layer is patterned to form a first trench which is expanded to a second direction. A spacer which is expanded to the second direction is formed on the sidewall of the first trench. A second insulation layer(144) is formed in order to fill the first trench.
    • 目的:提供电阻可变存储器件及其形成方法,以通过使下电极和可变电阻图案接触的面积最小化来选择性地降低可变电阻图案和下电极之间的界面电阻。 构成:在半导体衬底上形成第一层间绝缘层(120)。 在第一层间绝缘层中形成下电极。 下电极的矩形上侧被扩展为第一方向。 在下电极上形成可变电阻图案(160)。 覆盖下电极的第一绝缘层(142)形成在第一层间绝缘层上。 图案化第一绝缘层以形成扩展到第二方向的第一沟槽。 在第一沟槽的侧壁上形成有扩展到第二方向的间隔物。 形成第二绝缘层(144)以填充第一沟槽。
    • 6. 发明公开
    • 반도체 기억 장치
    • 半导体存储器件
    • KR1020090009111A
    • 2009-01-22
    • KR1020080067061
    • 2008-07-10
    • 가부시키가이샤 히타치세이사쿠쇼
    • 오노가즈오다께무라리이찌로세끼구찌도모노리
    • G11C13/02G11C16/00
    • G11C13/0064G11C13/0011G11C13/0069G11C16/3468G11C2013/0066G11C2013/009G11C2213/52G11C2213/79
    • A semiconductor memory device capable of reducing variation of memory cell resistor is provided to stop reprogram operation by detecting potential increase of a center node of a memory cell and a reference load circuit. A memory cell comprises a memory device of resistance alteration type showing current voltage property, and supplies a current to from bit lines(BL0, BL1, BL2) to source lines(SL0, SL1, SL2). If potential difference of the bit lines and the source lines exceeds a plus critical voltage, the memory cell has high resistance property. The memory cell supplies a current to from the source lines to the bit lines. If potential difference of the bit lines and the source lines exceeds a minus critical voltage, the memory cell has low resistance property. A resistance value after program is changed according to length of supply time of a program voltage.
    • 提供能够减小存储单元电阻的变化的半导体存储器件,通过检测存储单元的中心节点和参考负载电路的电位增加来停止重新编程操作。 存储单元包括显示电流电压特性的电阻变化型存储器件,并将电流从位线(BL0,BL1,BL2)提供给源极线(SL0,SL1,SL2)。 如果位线和源极线的电位差超过正临界电压,则存储单元具有高电阻特性。 存储单元从源极线向位线提供电流。 如果位线和源极线的电位差超过负临界电压,则存储单元具有低电阻特性。 程序之后的电阻值根据编程电压的供给时间长度而变化。