US 2014/0231753 A1 · Multi-color light emitting diode and method for making same

Abstract

A color light-emitting diode using a blue light component to produce red light and green light is disclosed. A blue-light emitting material is provided between a cathode layer and an anode layer for emitting the blue light component. A light re-emitting layer has a first material in a first diode section arranged to produce a red light component in response to the blue light component, and a second material in a second diode section arranged to produce a green light component in response to the blue light component. A transparent material in a third diode section allows part of the blue light component to transmit through. The anode layer is partitioned into three electrode portions separately located in the three diode sections, so that the red, green and blue light components in the diode sections can be separately controlled.

Claims14

Dependent claims

A light emitting diode, comprising:

a first electrode layer;
a second electrode layer;
an organic layer disposed between the first and second electrode layers arranged to emit a first light component in a first wavelength through the second electrode layer;
a light re-emitting layer adjacent to the second electrode layer, arranged to receive at least part of the first light component, the light re-emitting layer comprising a first excitable material arranged to emit a second light component in a second wavelength longer than the first wavelength in response to the first light component, and a second excitable material arranged to emit a third light component in a third wavelength longer than the second wavelength in response to the first light component.

1 more element

A display panel, comprising:

a substrate;
a plurality of pixels formed on the substrate, each pixel comprising a light-emitting diode, the light-emitting diode comprising:
a first electrode layer;
a second electrode layer;
an organic layer disposed between the first and second electrode layers arranged to emit a first light component in a first wavelength through the second electrode layer;
a light re-emitting layer adjacent to the second electrode layer, arranged to receive at least part of the first light component, the light re-emitting layer comprising a first excitable material arranged to emit a second light component in a second wavelength longer than the first wavelength in response to the first light component, and a second excitable material arranged to emit a third light component in a third wavelength longer than the second wavelength in response to the first light component.

3 more elements

A method for producing a light emitting diode, comprising:

providing a first electrode layer and a second electrode layer on a substrate;
disposing an organic layer between the first and second electrode layers, the organic layer arranged to emit a first light component in a first wavelength through the second electrode layer;
disposing a light re-emitting layer adjacent to the second electrode layer, the light re-emitting layer arranged to receive at least part of the first light component, the light re-emitting layer comprising a first excitable material arranged to emit a second light component in a second wavelength longer than the first wavelength in response to the first light component, and a second excitable material arranged to emit a third light component in a third wavelength longer than the second wavelength in response to the first light component.

Dependencies are inferred from the claim text.

Multi-color light emitting diode and method for making same

Life of this patent

Multi-color light emitting diode and method for making same

Life of this patent

Abstract

Claims14