PRODUCING LIGHT EMITTING DEVICES AT VARIABLE FLUX LEVELS

摘要

Conventional techniques are used to control the flux of an LED element, by modifying a surface of a light emitting element. One type of modification is roughening the surface, to enhance the light extraction efficiency. The degree of modification of the surface is controlled by controlling one or more of the parameters associated with the modification process. A given LED technology will have some minimum flux without modification and some maximum flux with optimal modification. By characterizing the relationship between the parameters of the modifying process and the resultant flux, the parameters of the modification process can be controlled to achieve a desired flux between the minimum and maximum flux achievable by the given LED technology.

主权项

1. A method comprising:
determining a required flux for an application, determining a relationship between a process parameter and a flux achievable by modifying a surface of a light emitting element using the process parameter, determining a first select value of the process parameter that will achieve a first flux, the first flux begin less than the required flux, modifying the surface of the light emitting element using the first select value of the processing parameter, determining a second select value of the process parameter that will achieve the required flux based on the relationship, and modifying the surface of the light emitting element using the second select value of the processing parameter.