Patent ID: 6194089
Filing Date: 2001-02-27
Classification: H01L,Y10S

Abstract:
An organic medium for use in an electroluminescent display device consisting of a single layer of a continuous organic medium A.sub.x B.sub.y C.sub.z having a thickness defined by a first edge and an oppositely opposed spaced apart second edge, where A is a component capable of transporting electrons, B is a component capable of transporting holes, C is a hole injecting material, x represents the content of the A component in the medium A.sub.x B.sub.y C.sub.z with a value ranging from a fraction of a percent at the first edge of the medium A.sub.x B.sub.y C.sub.z to 100% at the second edge of the medium A.sub.x B.sub.y C.sub.z, y represents the content of the B component in the medium A.sub.x B.sub.y C.sub.z, with a value of a fraction of a percent at the second edge of the medium A.sub.x B.sub.y C.sub.z, and z represents the content of C in the medium A.sub.x B.sub.y C.sub.z with a value of a fraction of a percent at the second edge of the medium A.sub.x B.sub.y C.sub.z, wherein the content of the B component and the content of C in combination range to 100% at the first edge.