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    • 5. 发明授权
    • Methodology for recovery of hot carrier induced degradation in bipolar devices
    • 在双极器件中回收热载体诱导的降解的方法
    • US07238565B2
    • 2007-07-03
    • US10904985
    • 2004-12-08
    • Fernando GuarinJ. Edwin Hostetter, Jr.Stewart E. Rauch, IIIPing-Chuan WangZhijian J. Yang
    • Fernando GuarinJ. Edwin Hostetter, Jr.Stewart E. Rauch, IIIPing-Chuan WangZhijian J. Yang
    • H01L21/8249
    • H01L29/7304H01L29/7378
    • A method for recovery of degradation caused by avalanche hot carriers is provided that includes subjecting an idle bipolar transistor exhibiting avalanche degradation to a thermal anneal step which increases temperature of the transistor thereby recovering the avalanche degradation of the bipolar transistor. In one embodiment, the annealing source is a self-heating structure that is a Si-containing resistor that is located side by side with an emitter of the bipolar transistor. During the recovering step, the bipolar transistor including the self-heating structure is placed in the idle mode (i.e., without bias) and a current from a separate circuit is flown through the self-heating structure. In another embodiment of the present, the annealing step is a result of providing a high forward current (around the peak fT current or greater) to the bipolar transistor while operating below the avalanche condition (V″CB of less than 1 V). Under the above conditions, about 40% or greater of the degradation can be recovered. In yet another embodiment of the present invention, the thermal annealing step may include a rapid thermal anneal (RTA), a furnace anneal, a laser anneal or a spike anneal.
    • 提供了一种用于回收由雪崩热载体引起的降解的方法,其包括使表现出雪崩降解的空闲双极晶体管经历热退火步骤,所述热退火步骤增加了晶体管的温度,从而恢复了双极晶体管的雪崩劣化。 在一个实施例中,退火源是自发热结构,其是与双极晶体管的发射极并排放置的含Si电阻器。 在恢复步骤期间,包括自发热结构的双极晶体管被置于空闲模式(即,没有偏压),并且来自单独电路的电流流过自热结构。 在本发明的另一个实施例中,退火步骤是在低于雪崩状况(V“CB”)的情况下向双极晶体管提供高正向电流(围绕峰值fT电流或更大)的结果, 小于1V)。 在上述条件下,可以回收约40%以上的降解。 在本发明的又一实施例中,热退火步骤可以包括快速热退火(RTA),炉退火,激光退火或尖峰退火。
    • 7. 发明授权
    • Line monitoring of negative bias temperature instabilities by hole injection methods
    • 通过空穴注入法线性监测负偏压温度不稳定性
    • US06521469B1
    • 2003-02-18
    • US09668987
    • 2000-09-25
    • Giuseppe La RosaFernando J. GuarinStewart E. Rauch, III
    • Giuseppe La RosaFernando J. GuarinStewart E. Rauch, III
    • H01L2166
    • H01L22/14
    • A process for in-line testing of a metal-oxide-semiconductor field effect transistor (MOSFET) device for negative bias thermal instability (NBTI), which degrades the gate oxide of the MOSFET device. The process generally comprises four steps. First, a hole injection method is selected that produces approximately the same gate oxide degradation as the NBTI under test. Second, a correlation is established between the NBTI degradation and device shifts due to the selected hole injection degradation method. Third, an in-line procedure is developed based on the hole injection method, using the second step to relate the measured shift to NBTI. Finally, a NBTI specification is defined based on the hole injection method using the second step. The MOSFET device is preferably a p-type MOSFET device and the hole injection method is preferably a channel hot-carrier stress method.
    • 用于负偏压热不稳定性(NBTI)的金属氧化物半导体场效应晶体管(MOSFET)器件的在线测试的过程,其降低MOSFET器件的栅极氧化物。 该方法通常包括四个步骤。 首先,选择产生与测试中的NBTI大致相同的栅极氧化物降解的空穴注入方法。 其次,由于所选择的空穴注入降解方法,在NBTI劣化和器件移位之间建立了相关性。 第三,基于空穴注入方法开发了一种在线程序,使用第二步将测量的移位与NBTI相关联。 最后,基于使用第二步骤的空穴注入方法来定义NBTI规范。 MOSFET器件优选为p型MOSFET器件,并且空穴注入法优选为沟道热载流子应力法。
    • 8. 发明授权
    • Methodology for recovery of hot carrier induced degradation in bipolar devices
    • 在双极器件中回收热载体诱导的降解的方法
    • US07723824B2
    • 2010-05-25
    • US11744621
    • 2007-05-04
    • Fernando GuarinJ. Edwin Hostetter, Jr.Stewart E. Rauch, IIIPing-Chuan WangZhijian J. Yang
    • Fernando GuarinJ. Edwin Hostetter, Jr.Stewart E. Rauch, IIIPing-Chuan WangZhijian J. Yang
    • H01L29/73
    • H01L29/7304H01L29/7378
    • A method for recovery of degradation caused by avalanche hot carriers is provided that includes subjecting an idle bipolar transistor exhibiting avalanche degradation to a thermal anneal step which increases temperature of the transistor thereby recovering the avalanche degradation of the bipolar transistor. In one embodiment, the annealing source is a self-heating structure that is a Si-containing resistor that is located side by side with an emitter of the bipolar transistor. During the recovering step, the bipolar transistor including the self-heating structure is placed in the idle mode (i.e., without bias) and a current from a separate circuit is flown through the self-heating structure. In another embodiment of the present, the annealing step is a result of providing a high forward current (around the peak fT current or greater) to the bipolar transistor while operating below the avalanche condition (VCB of less than 1 V). Under the above conditions, about 40% or greater of the degradation can be recovered. In yet another embodiment of the present invention, the thermal annealing step may include a rapid thermal anneal (RTA), a furnace anneal, a laser anneal or a spike anneal.
    • 提供了一种用于回收由雪崩热载体引起的降解的方法,其包括使表现出雪崩降解的空闲双极晶体管经历热退火步骤,所述热退火步骤增加了晶体管的温度,从而恢复了双极晶体管的雪崩劣化。 在一个实施例中,退火源是自发热结构,其是与双极晶体管的发射极并排放置的含Si电阻器。 在恢复步骤期间,包括自发热结构的双极晶体管被置于空闲模式(即,没有偏压),并且来自单独电路的电流流过自热结构。 在本发明的另一个实施例中,退火步骤是在低于雪崩条件(VCB小于1V)的情况下向双极晶体管提供高正向电流(围绕峰值fT电流或更大)的结果。 在上述条件下,可以回收约40%以上的降解。 在本发明的又一实施例中,热退火步骤可以包括快速热退火(RTA),炉退火,激光退火或尖峰退火。