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    • 66. 发明申请
    • PHASE CHANGE MEMORY CODING
    • 相变存储器编码
    • US20110317480A1
    • 2011-12-29
    • US12823508
    • 2010-06-25
    • HSIANG-LAN LUNGMing Hsiu LeeYen-Hao ShihTien-Yen WangChao-I Wu
    • HSIANG-LAN LUNGMing Hsiu LeeYen-Hao ShihTien-Yen WangChao-I Wu
    • G11C11/00H01L21/06
    • G11C13/0004G11C11/5678G11C13/004G11C13/0069G11C2013/0092
    • An integrated circuit phase change memory can be pre-coded by inducing a first resistance state in some cells and the memory, and a second resistance state and some other cells in the memory to represent a data set. The integrated circuit phase change memory is mounted on a substrate after coding the data set. After mounting the integrated circuit phase change memory, the data set is read by sensing the first and second resistance states, and changing cells in the first resistance state to a third resistance state and changing cells in the second resistance state to a fourth resistance state. The first and second resistance states maintain a sensing margin after solder bonding or other thermal cycling process. The third and fourth resistance states are characterized by the ability to cause a transition using higher speed and lower power, suitable for a mission function of a circuit.
    • 集成电路相变存储器可以通过在一些单元和存储器中引起第一电阻状态以及存储器中的第二电阻状态以及存储器中的一些其他单元来表示数据集而被预编码。 在对数据集进行编码之后,将集成电路相变存储器安装在基板上。 在安装集成电路相变存储器之后,通过感测第一和第二电阻状态以及将第一电阻状态下的单元改变为第三电阻状态并将第二电阻状态的单元改变为第四电阻状态来读取数据组。 第一和第二电阻状态在焊接或其他热循环过程之后保持感测裕度。 第三和第四电阻状态的特征在于能够使用更高速度和更低功率的转换,适用于电路的任务功能。
    • 67. 发明申请
    • Method for Programming a Multilevel Phase Change Memory Device
    • 多级相变存储器件编程方法
    • US20110080780A1
    • 2011-04-07
    • US12969526
    • 2010-12-15
    • MING-HSIU LEEYI CHOU CHEN
    • MING-HSIU LEEYI CHOU CHEN
    • G11C11/00
    • G11C13/0069G11C11/5678G11C13/0004G11C2013/0092
    • A method of programming a phase change device includes selecting a desired threshold voltage (Vth) and applying a programming pulse to a phase change material in the phase change device. The applying of the programming pulse includes applying a quantity of energy to the phase change material to drive at least a portion of this material above a melting energy level. A portion of the energy applied to the phase change material is allowed to dissipate below the melting energy level. The shape of the energy dissipation from the phase change material is controlled until the energy applied to the phase change material is less than a quenched energy level, to cause the phase change device to have the desired Vth. A remaining portion of the energy applied to the phase change material is allowed to dissipate to an environmental level.
    • 编程相变装置的方法包括选择期望的阈值电压(Vth)并将编程脉冲施加到相变装置中的相变材料。 应用编程脉冲包括向相变材料施加一定量的能量以将该材料的至少一部分驱动在熔化能级以上。 施加到相变材料的能量的一部分被允许消散在熔融能级以下。 控制来自相变材料的能量耗散的形状,直到施加到相变材料的能量小于淬火能量水平,以使相变装置具有期望的Vth。 施加到相变材料的能量的剩余部分被允许消散到环境水平。
    • 68. 发明申请
    • SET ALGORITHM FOR PHASE CHANGE MEMORY CELL
    • 设置相位变化记忆细胞的算法
    • US20110075475A1
    • 2011-03-31
    • US12965126
    • 2010-12-10
    • MING-HSIU LEE
    • MING-HSIU LEE
    • G11C11/21
    • G11C13/0038G11C13/0004G11C13/0069G11C2013/0071G11C2013/009G11C2013/0092G11C2213/79
    • Memory devices and methods for operating such devices are described herein. A method is described herein for operating a memory cell comprising phase change material and programmable to a plurality of resistance states including a high resistance state and a lower resistance state. The method comprises applying a first bias arrangement to the memory cell to establish the lower resistance state, the first bias arrangement comprising a first voltage pulse. The method further comprises determining whether the memory cell is in the lower resistance state, and if the memory cell is not in the lower resistance state then applying a second bias arrangement to the memory cell. The second bias arrangement comprises a second voltage pulse having a pulse height greater than that of the first voltage pulse.
    • 这里描述了用于操作这样的设备的存储器件和方法。 本文描述了一种用于操作包括相变材料并且可编程为包括高电阻状态和较低电阻状态的多个电阻状态的存储单元的方法。 该方法包括将第一偏置装置施加到存储器单元以建立较低电阻状态,第一偏置装置包括第一电压脉冲。 该方法还包括确定存储器单元是处于较低电阻状态,以及如果存储单元不处于较低电阻状态,则向存储单元施加第二偏置布置。 第二偏置装置包括具有大于第一电压脉冲的脉冲高度的第二电压脉冲。
    • 69. 发明申请
    • MULTI-LEVEL CELL PROGRAMMING OF PCM BY VARYING THE RESET AMPLITUDE
    • 通过改变复位电压,PCM的多级电容编程
    • US20110069538A1
    • 2011-03-24
    • US12564904
    • 2009-09-22
    • Chung H. LamMing-Hsiu LeeThomas NirschiBipin Rajendran
    • Chung H. LamMing-Hsiu LeeThomas NirschiBipin Rajendran
    • G11C11/00G11C7/00
    • G11C13/0004G11C11/5678G11C13/0069G11C2013/0083G11C2013/0092
    • A phase change memory device and a method for programming the same. The method includes determining a characterized lowest SET current and corresponding SET resistance for the phase change memory device. The method includes determining a characterized RESET current slope for the phase change memory device. The method also includes calculating a first current amplitude for a RESET pulse based on the characterized lowest SET current and the characterized RESET current slope. The method includes applying the RESET pulse to a target memory cell in the phase change memory device and measuring the resistance of the target memory cell. If the measured resistance is substantially less than a target resistance, the method further includes applying one or more additional RESET pulses. In one embodiment of the invention, the one or more additional RESET pulses have current amplitudes greater than a previously applied RESET pulse.
    • 相变存储器件及其编程方法。 该方法包括确定用于相变存储器件的特征最低的SET电流和相应的SET电阻。 该方法包括确定用于相变存储器件的特征化的RESET电流斜率。 该方法还包括基于所表征的最低SET电流和表征的RESET电流斜率来计算RESET脉冲的第一电流幅度。 该方法包括将RESET脉冲施加到相变存储器件中的目标存储单元并测量目标存储单元的电阻。 如果所测量的电阻远小于目标电阻,该方法还包括应用一个或多个附加的RESET脉冲。 在本发明的一个实施例中,一个或多个附加的RESET脉冲的电流幅度大于先前施加的RESET脉冲。