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    • 3. 发明授权
    • Sacrifice layer structure and method for magnetic tunnel junction (MTJ) etching process
    • 牺牲层结构和磁隧道结(MTJ)蚀刻工艺
    • US08629518B2
    • 2014-01-14
    • US12828593
    • 2010-07-01
    • Yu-Jen WangYa-Chen KaoChun-Jung Lin
    • Yu-Jen WangYa-Chen KaoChun-Jung Lin
    • H01L29/82
    • H01L43/12H01L43/08
    • A magnetic tunnel junction (MTJ) etching process uses a sacrifice layer. An MTJ cell structure includes an MTJ stack with a first magnetic layer, a second magnetic layer, and a tunnel barrier layer in between the first magnetic layer and the second magnetic layer, and a sacrifice layer adjacent to the second magnetic layer, where the sacrifice layer protects the second magnetic layer in the MTJ stack from oxidation during an ashing process. The sacrifice layer does not increase a resistance of the MTJ stack. The sacrifice layer can be made of Mg, Cr, V, Mn, Ti, Zr, Zn, or any alloy combination thereof, or any other suitable material. The sacrifice layer can be multi-layered and/or have a thickness ranging from 5 Å to 400 Å. The MTJ cell structure can have a top conducting layer over the sacrifice layer.
    • 磁隧道结(MTJ)蚀刻工艺使用牺牲层。 MTJ单元结构包括在第一磁性层和第二磁性层之间的具有第一磁性层,第二磁性层和隧道势垒层的MTJ堆叠以及与第二磁性层相邻的牺牲层,其中牺牲 层在灰化过程中保护MTJ堆叠中的第二磁性层免受氧化。 牺牲层不会增加MTJ堆叠的电阻。 牺牲层可以由Mg,Cr,V,Mn,Ti,Zr,Zn或其任何合金组合或任何其它合适的材料制成。 牺牲层可以是多层的和/或具有从5到400的厚度。 MTJ单元结构可以在牺牲层上方具有顶部导电层。
    • 4. 发明授权
    • MRAM with current-based self-referenced read operations
    • MRAM具有基于当前的自引用读操作
    • US08493776B1
    • 2013-07-23
    • US13364756
    • 2012-02-02
    • Hung-Chang YuKai-Chun LinYu-Der ChihChun-Jung Lin
    • Hung-Chang YuKai-Chun LinYu-Der ChihChun-Jung Lin
    • G11C11/00
    • G11C11/1673G11C13/004G11C29/74
    • A magnetoresistive memory stores logic values in high and low resistance states of magnetic tunnel junction elements. Instead of comparing the resistance of elements to a fixed threshold to discern a logic state, the resistances of elements are self-compared before and after imposing a low resistance state. A measure of the resistance of an element in its unknown resistance state is stored, for example by charging a capacitor to a voltage produced when read current bias is applied. Then the element is written into its low resistance state and read current bias is applied again to develop another voltage, representing the low resistance state. A comparison circuit using current summing and an offset providing a minimum difference tolerance determines whether the resistance of the element was changed or remained the same. This determines the logic state of the element.
    • 磁阻存储器将逻辑值存储在磁性隧道结元件的高电阻和低电阻状态中。 代替将元件的电阻与固定阈值进行比较以辨别逻辑状态,元件的电阻在施加低电阻状态之前和之后自我比较。 例如,通过将电容器充电到施加读取电流偏压时产生的电压来存储元件在其未知电阻状态下的电阻的量度。 然后将元件写入其低电阻状态,并再次施加读取电流偏压以产生表示低电阻状态的另一电压。 使用电流求和和提供最小差容差的偏移的比较电路确定元件的电阻是改变还是保持相同。 这决定了元素的逻辑状态。
    • 9. 发明申请
    • Piezoelectric buzzer
    • 压电式蜂鸣器
    • US20090033473A1
    • 2009-02-05
    • US11882413
    • 2007-08-01
    • Cheng-Sheng YuHuey-Lin HsiehTsai-Kun HuangJyh-Jang WeyWu-Song ChuangChun-Jung Lin
    • Cheng-Sheng YuHuey-Lin HsiehTsai-Kun HuangJyh-Jang WeyWu-Song ChuangChun-Jung Lin
    • G08B3/10
    • G10K9/122G10K9/22
    • A piezoelectric buzzer includes a housing unit, a buzzer unit, and first and second terminals. The housing unit includes first and second housings coupled together. The second housing includes a base plate and a pair of spaced apart insert seats, each of which protrudes inwardly from the base plate toward the first housing and is formed with an insert hole. The buzzer unit is disposed in the resonant chamber and includes a vibrating plate and a piezoelectric plate attached to the vibrating plate. The first and second terminals are inserted respectively into the insert holes of the insert seats, and have a respective connection section extending outwardly of the housing unit, and a respective extending section abutting against a respective one of the vibrating plate and the piezoelectric plate.
    • 压电蜂鸣器包括壳体单元,蜂鸣器单元以及第一和第二端子。 壳体单元包括联接在一起的第一和第二壳体。 第二壳体包括基板和一对间隔开的插入座,每个插入座从基板朝向第一壳体向内突出并形成有插入孔。 蜂鸣器单元设置在谐振室中,并且包括振动板和附接到振动板的压电板。 第一和第二端子分别插入到插入座的插入孔中,并且具有从壳体单元向外延伸的相应的连接部分以及抵靠振动板和压电板中的相应一个的相应的延伸部分。