Phosphor converted Light Emitting Diodes (pcLED) have undergone many changes of design over the last 11 years. For advanced applications, however, besides other binning criteria a closely binned color point appears to be a major issue. Manufacturing yield is closely related to this point. Philips Lumileds Lighting (PLL) introduced very recently a new compact solid state color converter - Lumiramic - which allows much closer color control by selecting perfect matches between blue pump LEDs and previously characterized converter tiles in a pick-and-place process. Lumiramic phosphor technology utilizes a ceramic phosphor plate and PLL's new Thin Film Flip Chip (TFFC) technology. A first application in Automotive Forward Lighting and some of the design considerations are outlined in the paper

Date Published: 27 September 2007
PDF: 6 pages
Proc. SPIE 6797, Manufacturing LEDs for Lighting and Displays, 67970G (27 September 2007);

Published in SPIE Proceedings Vol. 6797:
Manufacturing LEDs for Lighting and Displays
Thomas P. Pearsall, Editor(s)