Organic light emitting display with micro-lenses and method of manufacturing the same

1. An organic light emitting display comprising:

a base substrate;

a driving transistor arranged on the base substrate;

a first electrode electrically connected to the driving transistor;

an organic light emitting layer arranged on the first electrode to generate a light;

a second electrode arranged on the organic light emitting layer;

an opposite substrate facing the base substrate and including micro-lenses to disperse the light generated by the organic light emitting layer, wherein at least one of the micro-lenses has a thickness that differs from another one of the micro-lenses; and

a sub-electrode arranged on at least one of the micro-lenses, the sub-electrode making contact with the second electrode to be electrically connected to the second electrode

wherein the base substrate comprises a plurality of pixel areas, the first electrode is arranged in each pixel area, and the sub-electrode is arranged between adjacent pixel areas in a plan view,

wherein the micro-lenses comprise:

first micro-lenses protruding from the opposite substrate and each corresponding to a respective one of the pixel areas, wherein each of the first micro-lenses has a first thickness; and

second micro-lenses protruding from the opposite substrate and corresponding to areas between adjacent pixel areas, wherein each of the second micro-lenses has a second thickness that is thicker than the first thickness, and wherein the sub-electrode is arranged on the second micro-lenses.

2. The organic light emitting display of claim 1 , wherein each of the micro-lenses has a convex shape toward the second electrode.

3. The organic light emitting display of claim 1 , wherein the sub-electrode comprises a metallic material.

4. The organic light emitting display of claim 1 , wherein the organic light emitting layer is arranged on an entire surface of the base substrate.

5. A substrate opposing a display substrate of an organic light emitting display, the opposing substrate comprising:

a transparent substrate, wherein one surface of the transparent substrate includes a first plurality of lenses disposed to face respective pixel areas of the display substrate and a second plurality of lenses disposed to face respective spaces between the pixel areas, wherein the first plurality of lenses have a different thickness from the second plurality of lenses; and

a plurality of sub-electrodes contacting with and covering a part of a respective one of the second plurality of lenses,

wherein the sub-electrodes are configured to make an electrical connection with a transparent conductive material of the display substrate.

6. The opposing substrate of claim 5 , wherein the lenses have a convex shape toward the display substrate.

7. The opposing substrate of claim 5 , wherein the sub-electrodes have a convex-concave shape.

8. The opposing substrate of claim 5 , wherein the thickness of the second plurality of lenses is greater than the thickness of the first plurality of lenses.

9. The opposing substrate of claim 5 , wherein the width of the second plurality of lenses is greater than the width of the first plurality of lenses.