ASQ RD Events in December
Fred Schenkelberg
Application of Survival Data Analysis- Introduction and Discussion (存活数据分析及应用- 简介和讨论)
December 15, 2012 18:00 US Pacific Coast Time
December 16, 2012 10:00am China time
https://www1.gotomeeting.com/register/200828889
Presenter:
Shaoang Zhang, Ph.D. , (张少昂博士)
Abstract
Application of Survival Data Analysis- Introduction and Discussion (存活数据分析及应用- 简介和讨论), will give an overview of survival data analysis, including parametric and non-parametric approaches and proportional hazard model, providing a real life example of survival data-based field return analysis. Several common issues in survival data analysis will also be discussed. (presented in Chinese)
and....
Light Emitting Diode Failure Mechanisms
December 13, 2012 09:00 US Pacific Coast Time
https://www1.gotomeeting.com/register/833701488
Presenter:
Dr. Diganta Das
Abstract
The increasing demand for light emitting diodes (LEDs) has been driven by a number of application categories, including display backlighting, communications, medical services, signage, and general illumination. The construction of LEDs is somewhat similar to microelectronics, but there are functional requirements, materials, and interfaces in LEDs that make their failure modes and mechanisms unique. This web seminar will present a review for industry and academic research on LED failure mechanisms and reliability to help LED developers and end-product manufacturers focus resources in an effective manner. The focus is on the reliability of LEDs at the die and package levels. The driving factors for precipitating these mechanisms will be discussed to help the developers and users of LEDs control the mechanisms and assess reliability. We will concentrate on the phosphor thermal quenching mechanism to illustrate the uniqueness of LEDs compared with other semiconductor devices.