摘要:
The present disclosure relates to a method for measuring thermal electric characteristics of a semiconductor device, including the steps of: providing at least one current to the LED device over a time interval; recording a voltage transient response of the LED device, wherein the voltage transient response has a plurality of time segments different in gradient; computing a voltage difference from one of the plurality of time segments in the voltage transient response; and determining whether the LED device is defective based on the voltage difference, wherein the voltage difference is thermal dependent. The present disclosure also provides a testing method for defining a plurality of time segments.
摘要:
A method for detecting a semiconductor device property is provided. First, a semiconductor device is provided. Thereafter, a detecting current is applied and the semiconductor device is heated, and temperatures and voltages of the semiconductor device are measured, so as to establish a relationship between the temperatures and the voltages of the semiconductor device. Accordingly, a temperature sensitive parameter (TSP) is calculated. An apparatus for detecting a semiconductor device property is also provided.
摘要:
The present disclosure relates to a method for measuring thermal electric characteristics of a semiconductor device, including the steps of: providing at least one current to the LED device over a time interval; recording a voltage transient response of the LED device, wherein the voltage transient response has a plurality of time segments different in gradient; computing a voltage difference from one of the plurality of time segments in the voltage transient response; and determining whether the LED device is defective based on the voltage difference, wherein the voltage difference is thermal dependent. The present disclosure also provides a testing method for defining a plurality of time segments.
摘要:
An inspection system is provided, which applies a forward or reverse voltage on a light-emitting device and measures a current thereof respectively before and after temperature rise, and determines whether the device fails according to the fact whether a current difference before and after the temperature rise is larger than a failure current determination value. Alternatively, the inspection system adopts a current applying device to apply a forward and reverse current on a light-emitting device and measures a voltage difference thereof respectively before and after temperature rise, and determines whether the device fails according to the fact whether a difference of the voltage differences before and after the temperature rise is larger than a failure voltage determination value. Alternatively, the inspection system adopts a predetermined inspecting step and a rapid inspecting step respectively to determine whether a light-emitting device fails. An inspection method for the inspection system is also provided.
摘要:
A method for detecting a semiconductor device property is provided. First, a semiconductor device is provided. Thereafter, a detecting current is applied and the semiconductor device is heated, and temperatures and voltages of the semiconductor device are measured, so as to establish a relationship between the temperatures and the voltages of the semiconductor device. Accordingly, a temperature sensitive parameter (TSP) is calculated. An apparatus for detecting a semiconductor device property is also provided.
摘要:
An inspection system is provided, which applies a forward or reverse voltage on a light-emitting device and measures a current thereof respectively before and after temperature rise, and determines whether the device fails according to the fact whether a current difference before and after the temperature rise is larger than a failure current determination value. Alternatively, the inspection system adopts a current applying device to apply a forward and reverse current on a light-emitting device and measures a voltage difference thereof respectively before and after temperature rise, and determines whether the device fails according to the fact whether a difference of the voltage differences before and after the temperature rise is larger than a failure voltage determination value. Alternatively, the inspection system adopts a predetermined inspecting step and a rapid inspecting step respectively to determine whether a light-emitting device fails. An inspection method for the inspection system is also provided.