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| 1 | Transient thermal analysis as measurement method for IC package structural integrity显示文摘Practices of IC package reliability testing are reviewed briefly,and the application of transient thermal analysis is examined in great depth.For the design of light sources based on light emitting diode(LED) efficient and accurate reliability testing is required to realize the potential lifetimes of 105 h.Transient thermal analysis is a standard method to determine the transient thermal impedance of semiconductor devices,e.g.power electronics and LEDs.The temperature of the semiconductor junctions is assessed by time-resolved measurement of their forward voltage(Vf).The thermal path in the IC package is resolved by the transient technique in the time domain.This enables analyzing the structural integrity of the semiconductor package.However,to evaluate thermal resistance,one must also measure the dissipated energy of the device(i.e.,the thermal load) and the k-factor.This is time consuming,and measurement errors reduce the accuracy.To overcome these limitations,an innovative approach,the relative thermal resistance method,was developed to reduce the measurement effort,increase accuracy and enable automatic data evaluation.This new way of evaluating data simplifies the thermal transient analysis by eliminating measurement of the k-factor and thermal load,i.e.measurement of the lumen flux for LEDs,by normalizing the transient Vfdata.This is especially advantageous for reliability testing where changes in the thermal path,like cracks and delaminations,can be determined without measuring the k-factor and thermal load.Different failure modes can be separated in the time domain.The sensitivity of the method is demonstrated by its application to highpower white In GaN LEDs.For detailed analysis and identification of the failure mode of the LED packages,the transient signals are simulated by time-resolved finite element(FE) simulations.Using the new approach,the transient thermal analysis is enhanced to a powerful tool for reliability investigation of semiconductor packages in accelerated lifetime tests and for inline inspection.This enables automatic data analysis of the transient thermal data required for processing a large amount of data in production and reliability testing.Based on the method,the integrity of LED packages can be tested by inline,outgoing inspection and the lifetime prediction of the products is improved. | Alexander Han Maximilian Schmid E Liu Gordon Elger | 2015 | Chinese Physics B2015，24，6： | 2 |
| 2 | Indications of nonlin- ear deterministic and finite - dimensional structures in time series of brain electrical activity: Dependence on recording region and brain state显示文摘 | Ralph G Andrzejak Klaus Lehnertz Florian Mormann Christo- ph Rieke Peter David Christian E Elger | 2001 | Physical Review E2001，64，06： | 1 |
| 3 | Cognitive profile of topiramate as compared with lamotrigine in epilepsy patients on antlepileptie drug polytherapy: relationships to blood serum levels and eomedieation 显示文摘 | E Koekelmann CE Elger C Helmstaedter | 2004 | Epilepsy & Behavior2004，5，5： | 1 |
| 4 | Prognostic significance of ictal and interictal epileptiform activity in temporal lobe epilepsy 显示文摘 | Hufnagel A Elger C E Pels H | 1994 | Epilepsia1994，35，6： | 1 |
| 5 | Specific response of the epileptic focus to anesthesia with propofol显示文摘 | HUFNAGEL A ELGER C E NADSTAWEK J | 1990 | J Epileps1990，3，1： | 1 |
| 6 | Urinary neutrophil gelatinase- associated lipocalin distinguishes prerenal from intrinsic renal failure and predicts outcomes 显示文摘 | Singer E Elger A Elitok S | 2011 | Kidney Int2011，80，4： | 1 |
| 7 | Nonlinear denoising of transient signals with application to event-related potentials显示文摘 | Effern A Lehnertz K Schreiber T Grunwald T David P Elger C E | 2000 | Physica D2000，140，： | 1 |
| 8 | The interaction of rhinal cortex and hippocampus in human declarative memory formation显示文摘 | Fell J Klaver P Elger C E | 2002 | Rev Neurosci2002，13，4： | 1 |
| 9 | Seizure anticipation:from algorithms to clinical practice显示文摘 | MORMANN F ELGER C E LEHNERTZ K | 2006 | Current Opinion in Neurology2006，19，2： | 1 |
| 10 | Seizure anticipation: from algorithm to clinical practice 显示文摘 | Mormann F Elger C E Lehnertz K | 2006 | Current Opinion in Neurology2006，19，2： | 1 |
| 11 | Anticonvulsant pharmacology of voltage-gated Na+ channels in hippocampal neurons of control and chronically epileptic rats显示文摘 | Remy S Urban B W Elger C E | 2003 | Eur J Neurosci2003，17，2： | 1 |
| 12 | Seizure prediction: the long and winding road 显示文摘 | MORMANN F ANDRZEJAK R G ELGER C E | 2007 | Brain2007，130，2： | 1 |
| 13 | The interaction of rhinal cortex and hippocampus in human declarative memory formation显示文摘 | Fell J Klaver P Elger C E | 2002 | Rev Neurosci2002，13，1： | 1 |
| 14 | Adaptation of renal func- tion to hypotonic medium in the winter flounder (Pseudopleu- ronectesamericanus) 显示文摘 | Elger E Elger B Hentschel H | 1987 | J Comp Physiol1987，157，： | 1 |
| 15 | Psychogenic nonepileptic sei' zures:review and update显示文摘 | REUBER M ELGER C E | 2003 | Epilepsy Behav2003，4，3： | 1 |
| 16 | Significant improvement in frontal lobe associated neuropsychological functions after withdrawal of topiramate in epilepsy patients显示文摘 | Kokelmann E Elger CE Helmstaedter C | | 0，，02： | 1 |
| 17 | Seizure prediction by nonlinear time series analysis of brain electrical activity 显示文摘 | Elger C E Lehnertz K | 1998 | European Journal of Neuroscience1998，10，2： | 1 |
| 18 | What is the evidence that oxcarbazepine and carbamazepine are distinctly different antiepileptic drugs?显示文摘 | Schmidt D Elger C E | 2004 | Epilepsy Behav2004，5，5： | 1 |
| 19 | A role for podocytes to counteract capillary wall distension显示文摘 | Kriz W Hackenthal E Nobiling R Sakai T Elger M H?hnel B | 1994 | Kidney Int1994，45，： | 1 |
| 20 | Advances in pathogenic concepts and therapeutic agents in Rasmussen's encephalitis 显示文摘 | BIEN C G ELGER C E WIENDL H | 2002 | Expert Opin Investig Drugs2002，11，7： | 1 |
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