×

Electroluminescent devices

  • US 7,393,704 B2
  • Filed: 11/07/2005
  • Issued: 07/01/2008
  • Est. Priority Date: 03/13/1998
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for forming an electroluminescent device, which method comprises:

  • forming a first charge carrier injecting layer for injecting charge carriers of a first polarity;

    forming a semiconducting region over the first charge carrier injecting layer, the semiconducting region comprising a first semiconducting organic layer comprising a first semiconducting organic component adjacent to a second semiconducting organic layer comprising a second semiconducting organic component; and

    forming a second charge carrier injecting layer over the semiconducting region for injecting charge carriers of the opposite polarity;

    wherein the step of forming the semiconducting region comprises depositing the second semiconducting organic component over the first semiconducting organic layer from a solvent in which the first semiconducting organic component is soluble.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×