Pesquisa nas coleções internacionais e nacionais de patentes

1. (WO2013116623) BIDIRECTIONAL LIGHT SHEET

Pub. No.:    WO/2013/116623    International Application No.:    PCT/US2013/024312
Publication Date: Fri Aug 09 01:59:59 CEST 2013 International Filing Date: Sat Feb 02 00:59:59 CET 2013
IPC: F21K 99/00
H01L 25/075
H01L 33/62
F21Y 101/02
F21Y 103/00
Applicants: THE PROCTER & GAMBLE COMPANY
Inventors: HASENOEHRL, Erik, John
MCGUIRE, Kenneth, Stephen
Title: BIDIRECTIONAL LIGHT SHEET
Abstract:
A solid state light sheet (10) and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., greater than 1,000 LEDs) (12) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate having conductors is then laminated over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. The light sheets (10) may be formed to emit light from opposite surfaces of the light sheet, enabling it to be used in a hanging fixture to illuminate the ceiling as well as the floor.