Led device having improved color

A method of forming a display, comprising the steps of:

• a) providing a substrate having at least one electrically-continuous electrode formed over the substrate;
• b) depositing a first photosensitive material over the electrically-continuous electrode, patternwise exposing, and removing portions of the first photosensitive material to form a separator that divides the surface of the electrically-continuous electrode into two, or more, separate electrode portions;
• c) forming a patterned transparent layer over at least one of the separated electrode portions;
• d) forming a light-emitting layer over the transparent layer and all separated electrode portions;
• e) forming a second electrode over the light-emitting layer;
• and
• f) wherein one electrode portion, the transparent layer, the light-emitting layer, and the second electrode comprise a first optical cavity having a first optical path length and another electrode portion, the light-emitting layer, and the second electrode comprise a second optical cavity having a second optical path length different from the first optical path length.

A method of forming a display, comprising the steps of:

• a) providing a substrate having at least one electrically-continuous electrode formed over the substrate, the electrically-continuous electrode divided into separate portions by a separator;
• b) locating or forming a mask over the electrically-continuous electrode;
• c) removing a portion of the mask to expose at least one separate portion of the electrically-continuous electrode;
• d) depositing a transparent layer over the mask and exposed electrode portion to pattern the transparent layer;
• e) forming a light-emitting layer over the patterned transparent layer and electrically-continuous electrode;
• f) removing the mask;
• g) forming a second electrode over the light-emitting layer;
• and
• h) wherein the separated electrically-continuous electrode portion having the transparent layer comprises a first optical cavity and the separated portion of the electrically-continuous electrode without the transparent layer comprises a second optical cavity having a different optical path length than the first optical path length.