Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
205 words
An article comprising a layer structure on a major surface of a substrate body (30), said layer structure comprising a) spaced apart first and second reflector means (e.g., 31, 361) and an active layer (35) that comprises organic material capable of electroluminescence, with at least a first portion of the active layer between said reflector means, said first and second reflector means defining a first microcavity of effective optical length L₁; and b) means (e.g., 361) that facilitate application of an electric field across the first portion of the active layer such that the first microcavity can be caused to emit radiation of a first color; CHARACTERIZED IN THAT the layer structure further comprises c) spaced apart third and fourth reflector means (e.g., 31, 362), with a second portion of the active layer between said third and fourth reflector means, said third and fourth reflector means defining a second microcavity of effective optical length L₂ different from L₁ and spaced apart from the first microcavity; and d) means (e.g., 362) that facilitate application of an electric field across the second portion of the active layer, such that the second microcavity can be caused to emit radiation of a second color different from the first color.
Claim 2
Dependent Claim
23 words
Article according to claim 1, wherein L₁ is approximately equal to one wavelength of the radiation of the first color in the microcavity.
Claim 3
Dependent Claim
41 words
Article according to claim 1, wherein each of said first and third reflector means is a portion of a unitary multilayer dielectric mirror, and each of said second and fourth reflector means is a separate portion of a patterned metal layer.
Claim 4
Dependent Claim
26 words
Article according to claim 1, wherein the layer structure comprises a filler material (32) of thickness t f,1 disposed between said first and second reflector means.
Claim 5
Dependent Claim
28 words
Article according to claim 4, wherein the layer structure further comprises filler material of thickness t f,2 ≠ t f,1 disposed between said third and fourth reflector means.
Claim 6
Dependent Claim
22 words
Article according to claim 1, wherein the layer structure further comprises a hole transport layer (e.g., 34) and/or an electron transport layer.
Claim 7
Dependent Claim
23 words
Article according to claim 3, wherein the layer structure further comprises a scattering layer (28) disposed outside of said first and second microcavities.
Claim 8
Dependent Claim
34 words
Article according to claim 1, further comprising a third microcavity of effective optical length L₃ that differs from L₂ and L₁, said third microcavity being adapted for emission of radiation of a third color.
Claim 9
Dependent Claim
35 words
Article according to claim 1, wherein the article comprises a multiplicity of microcavities of effective optical length essentially equal to L₁, and a further multiplicity of microcavities of effective optical length essentially equal to L₂.
Claim 10
Dependent Claim
28 words
Article according to claim 9, wherein the article comprises a further multiplicity of microcavities of effective optical length essentially equal to L₃, said article being a tricolor display.
Claim 11
Dependent Claim
129 words
An article according to claim 3, wherein the organic material capable of electroluminescence is selected from the group consisting of Alq, perylene derivatives, anthracene, poly(phenylene vinylenes), oxadiazole or stilbene derivatives, and any of the foregoing doped with a dopant selected from the group consisting of coumarines, DCM, and rhodamine derivatives; wherein the multilayer dielectric mirror comprises alternating layers of SiO₂ and SiN x , or SiO₂ and TiO₂; wherein the patterned metal layer comprises Al, Ag, Au, alloys of Mg and Ag, or alloys of Mg and Al; wherein said means for applying an electric field across said first and second portions of the active layer comprise indium tin oxide or polyaniline; and wherein the layer structure comprises a scattering layer disposed outside of said first and second microcavities.
Claim 12
Dependent Claim
25 words
An article according to claim 1, wherein the article is a flat panel display, optical interconnect means, optical fiber communication means, or LED printing means.