Organic light emitting diode display and method for manufacturing the same

An organic light emitting display, comprising:

• a substrate including a first region, a second region, a third region, and a fourth region corresponding to a red pixel, a green pixel, a blue pixel, and a white pixel, respectively;
• a thin film transistor array disposed on the substrate and comprising a first driving transistor disposed on the first region, a second driving transistor disposed on the second region, a third driving transistor disposed on the third region and a fourth driving transistor disposed on the fourth region;
• color filters including a red color filter, a green color filter and a blue color filter disposed on the thin film transistor array and disposed at the first region, the second region, and the third region, respectively;
• an overcoat disposed on the color filters;
• first, second, third, and fourth pixel electrodes disposed on and contacting the overcoat, the first pixel electrode being disposed on the first region, the second pixel electrode being disposed on the second region, the third pixel electrode being disposed on the third region, and the fourth pixel electrode being disposed on the fourth region;
• an organic light emitter disposed on the first, the second, the third, and the fourth pixel electrodes;
• and
• a common electrode disposed on the organic light emitter,
• wherein thicknesses of the first, the third, and the fourth pixel electrodes are substantially equal to each other and different from a thickness of the second pixel electrode, and
• wherein each of the color filters is disposed between the thin film transistor array and the pixel electrode,
• wherein the first, the second, the third and the fourth pixel electrodes have a first, a second, a third and a fourth lower pixel electrodes and a first, a second, a third and a fourth upper pixel electrodes respectively, and
• wherein the second lower pixel electrode includes a transparent conductive layer and is substantially formed only in a contact hole formed in the overcoat and exposing portion of the second driving transistors.

An organic light emitting display, comprising:

• a substrate including a first region, a second region, a third region, and a fourth region corresponding to a red pixel, a green pixel, a blue pixel, and a white pixel, respectively;
• a thin film transistor array disposed on the substrate and comprising a first driving transistor disposed on the first region, a second driving transistor disposed on the second region, a third driving transistor disposed on the third region and a fourth driving transistor disposed on the fourth region;
• color filters including a red color filter, a green color filter and a blue color filter disposed on the thin film transistor array and disposed at the first region, the second region, and the third region, respectively;
• an overcoat disposed on the color filters;
• first, second, third, and fourth pixel electrodes disposed on and contacting the overcoat, the first pixel electrode being disposed on the first region, the second pixel electrode being disposed on the second region, the third pixel electrode being disposed on the third region, and the fourth pixel electrode being disposed on the fourth region;
• an organic light emitter disposed on the first, the second, the third, and the fourth pixel electrodes;
• and
• a common electrode disposed on the organic light emitter,
• wherein thicknesses of the first, the third, and the fourth pixel electrodes are substantially equal to each other and different from a thickness of the second pixel electrode, and
• wherein each of the color filters is disposed between the thin film transistor array and the pixel electrode,
• wherein the first, the second, the third and the fourth pixel electrodes have a first, a second, a third and a fourth lower pixel electrodes and a first, a second, a third and a fourth upper pixel electrodes respectively, and
• wherein the first, the third and the fourth upper pixel electrode is connected to the first, the third and the fourth transistors through contact holes formed in the first, the third and the fourth lower pixel electrodes and the overcoat respectively.

An organic light emitting display, comprising:

• a substrate including a first region, a second region, a third region, and a fourth region corresponding to a red pixel, a green pixel, a blue pixel, and a white pixel, respectively;
• a thin film transistor array disposed on the substrate and comprising a first driving transistor disposed on the first region, a second driving transistor disposed on the second region, a third driving transistor disposed on the third region and a fourth driving transistor disposed on the fourth region;
• color filters including a red color filter, a green color filter and a blue color filter disposed on the thin film transistor array and disposed at the first region, the second region, and the third region, respectively;
• an overcoat disposed on the color filters;
• first, second, third, and fourth pixel electrodes disposed on and contacting the overcoat, the first pixel electrode being disposed on the first region, the second pixel electrode being disposed on the second region, the third pixel electrode being disposed on the third region, and the fourth pixel electrode being disposed on the fourth region;
• an organic light emitter disposed on the first, the second, the third, and the fourth pixel electrodes;
• and
• a common electrode disposed on the organic light emitter,
• wherein thicknesses of the first, the third, and the fourth pixel electrodes are substantially equal to each other and different from a thickness of the second pixel electrode, and
• wherein each of the color filters is disposed between the thin film transistor array and the pixel electrode,
• wherein the first, the second, the third and the fourth pixel electrodes have a first, a second, a third and a fourth lower pixel electrodes and a first, a second, a third and a fourth upper pixel electrodes respectively, and
• wherein the first, the third and the fourth lower pixel electrodes include transparent conductive layers and are substantially formed only in contact holes formed in the overcoat and exposing portion of the first, the third and the fourth driving transistors.

An organic light emitting display, comprising:

• a substrate including a first region, a second region, a third region, and a fourth region corresponding to a red pixel, a green pixel, a blue pixel, and a white pixel, respectively;
• a thin film transistor array disposed on the substrate and comprising a first driving transistor disposed on the first region, a second driving transistor disposed on the second region, a third driving transistor disposed on the third region and a fourth driving transistor disposed on the fourth region;
• color filters including a red color filter, a green color filter and a blue color filter disposed on the thin film transistor array and disposed at the first region, the second region, and the third region, respectively;
• an overcoat disposed on the color filters;
• first, second, third, and fourth pixel electrodes disposed on and contacting the overcoat, the first pixel electrode being disposed on the first region, the second pixel electrode being disposed on the second region, the third pixel electrode being disposed on the third region, and the fourth pixel electrode being disposed on the fourth region;
• an organic light emitter disposed on the first, the second, the third, and the fourth pixel electrodes;
• and
• a common electrode disposed on the organic light emitter,
• wherein thicknesses of the first, the third, and the fourth pixel electrodes are substantially equal to each other and different from a thickness of the second pixel electrode, and
• wherein each of the color filters is disposed between the thin film transistor array and the pixel electrode,
• wherein the first, the second, the third and the fourth pixel electrodes have a first, a second, a third and a fourth lower pixel electrodes and a first, a second, a third and a fourth upper pixel electrodes respectively, and
• wherein the upper pixel electrodes of the second pixel electrode is connected to the second transistor through a contact hole formed in the second lower pixel electrodes and the overcoat.