Patent ID: 8469760
Filing Date: 2013-06-25
Classification: C09K,H01L,H05B

Abstract:
1. A method for producing a light emitting device, the method comprising the steps of: preparing a light emitting element for emitting light having a predetermined peak wavelength; preparing large phosphor particles for absorbing light emitted from the light emitting element and for emitting light having a different peak wavelength from that of the light emitted from the light emitting element; preparing small phosphor particles, which have a smaller particle diameter than that of the large phosphor particles, for absorbing light emitted from the light emitting element and for emitting light having a different peak wavelength from that of the light emitted from the light emitting element; bonding one side of the light emitting element to the bottom face of a cup of one of a pair of lead frame of a metal; putting the large phosphor particles on a metal tray which is arranged on a metal plate; arranging the light emitting element, which is bonded to the bottom face of the cup of the one of the pair of lead frames, above the large phosphor particles, which are put on the metal tray, so as to face the large phosphor particles; applying a voltage between the metal plate and the one of the pair of lead frames to charge the light emitting element, which is arranged above the large phosphor particles, to be positive while charging the large phosphor particles to be negative to cause the large phosphor particles to be electrostatically adsorbed on the top and side faces of the light emitting element to form a layer of the large phosphor particles thereon so that the layer uniformly covers the top and side faces of the light emitting element; and sealing the light emitting element and the large phosphor particles by means of a sealing member containing the small phosphor particles.