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US 9,316,687 B2Granted
Method and apparatus for testing light-emitting device
AssigneeEpistar Corporation
InventorsChia-Liang Hsu, Chih-Chiang Lu
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Abstract
Disclosed is a method for testing a light-emitting device comprising the steps of: providing a light-emitting device comprising a plurality of light-emitting diodes; driving the plurality of the light-emitting diodes with a current; generating an image of the light-emitting device; and determining a luminous intensity of each of the light-emitting diodes; wherein the magnitude of the current is determined such that the current density driving each of the light-emitting diodes is smaller than or equal to 300 mA/mm2.
Claims18
A method for testing a light-emitting device comprising the steps of:
- providing a light-emitting device comprising a plurality of light-emitting diodes;
- driving the plurality of the light-emitting diodes with a current;
- generating an image of the light-emitting device;
- and
- determining a luminous intensity of each of the light-emitting diodes;
- wherein the magnitude of the current is determined such that the current density driving each of the light-emitting diodes is smaller than or equal to 300 mA/mm2.
3 more elements
Dependencies are inferred from the claim text.