Sara Nelson Tuttle

US Patent:

20030151700, Aug 14, 2003

Filed:

Dec 20, 2002

Appl. No.:

10/327628

Inventors:

Susan Carter - Santa Cruz CA, US
John Victor - Chicago IL, US
Sara Tuttle - Santa Cruz CA, US
Jane Breeden - Felton CA, US

International Classification:

H04N005/70

US Classification:

348/801000

Abstract:

The addition of a variety of additives to a soluble electroluminescent polymer in solution is used to improve the printability and performance of screen printed light-emitting polymer-based devices. Examples of such additives include transparent polymers, gel-retarders, high viscosity liquids, organic and inorganic salts, and oxide nanoparticles. The additives are used to control the viscosity of the electroluminescent polymer ink, to decrease the solvent evaporation rate, and to improve the ink consistency and working time. In addition, these additives can improve the charge injection and power efficiency of light emitting devices manufactured from the screen printable electroluminescent polymer ink.

US Patent:

20080061682, Mar 13, 2008

Filed:

Oct 2, 2006

Appl. No.:

11/538018

Inventors:

Susan Carter - Santa Cruz CA, US
John Victor - Chicago IL, US
Sara Tuttle - Santa Cruz CA, US
Jane Breeden - Felton CA, US

International Classification:

H01L 51/54

US Classification:

313504000

Abstract:

The addition of a variety of additives to a soluble electroluminescent polymer in solution is used to improve the printability and performance of screen printed light-emitting polymer-based devices. Examples of such additives include transparent polymers, gel-retarders, high viscosity liquids, organic and inorganic salts, and oxide nanoparticles. The additives are used to control the viscosity of the electroluminescent polymer ink, to decrease the solvent evaporation rate, and to improve the ink consistency and working time. In addition, these additives can improve the charge injection and power efficiency of light emitting devices manufactured from the screen printable electroluminescent polymer ink.