Patent ID: 8962361
Filing Date: 2015-02-24
Classification: H01L

Abstract:
1. A method for producing a radiation-emitting semiconductor chip, the method comprising: providing a semiconductor body configured to emit electromagnetic radiation of a first wavelength range from a radiation exit face; applying a first wavelength-converting layer with a first wavelength conversion material, which converts radiation of the first wavelength range into radiation of a second wavelength range, over the radiation exit face of the semiconductor body, the first wavelength-converting layer being applied by sedimentation or electrophoresis; and applying a second wavelength-converting layer with a second wavelength conversion material, which converts radiation of the first wavelength range into radiation of a third wavelength range, over the radiation exit face of the semiconductor body, the second wavelength-converting layer either being produced in a separate method step and then applied or being applied by: sedimentation, electrophoresis, or printing; wherein, if the first and/or second wavelength converting layer is applied by electrophoresis, then the layer has particle density higher or equal to 50 Vol %; and wherein, if the first and/or second wavelength converting layer is applied by sedimentation, then the layer has a particle density between 20 Vol % and 35 Vol %, limits included.