Organic light emitting diode display with corresponding color filters
An organic light emitting diode display that maintains a luminance distribution characteristic of each pixel at the side substantially similar to a luminance distribution characteristic of each pixel at the front of the OLED display by improving a twist of a lateral color with respect to a front color. The organic light emitting diode display includes a substrate, a driving wire disposed on the substrate, a color filter disposed on the driving wire. The color filter includes a blue color filter, a red color filter, and a green color filter formed on the driving wire; and an organic light emitting diode disposed on the color filter, where a width of the blue color filter is greater than a width of the red color filter or the green color filter.
1. An organic light emitting diode display comprising:
a substrate;
a color filter on the substrate, wherein the color filter comprises a blue color filter corresponding to a blue pixel, a red color filter corresponding to a red pixel and a green color filter corresponding to a green pixel;
an organic light emitting diode on each of the color filters, the organic light emitting diode on each of the color filters including an anode, an organic light emitting member which includes an organic emission layer on the anode to emit white light to the blue color filter, the red color filter and the green color filter, and a cathode covering the organic light emitting member;
a reflection forming layer covering opposing edges of the anode; and
a pixel definition layer which is spaced apart from the reflection forming layer and which does not cover opposing edges of the anode,
wherein a width of the blue color filter is greater than a width of the red color filter or the green color filter, so that a portion of light paths of the white light which are emitted from the organic emission layer toward the substrate in blue pixel pass through the blue color filter is greater than a portion of light paths of the white light which are emitted from the organic emission layer toward the substrate in the red pixel and the green pixel pass through the red color filter and green color filter, respectively, and
wherein one wall of the reflection forming layer faces one wall of the pixel definition layer, and an oblique cathode is disposed between the one wall of the reflection forming layer and the one wall of the pixel definition layer.
2. The organic light emitting diode display of claim 1 , further comprising:
a cover layer on the color filter and which covers the color filter.
3. The organic light emitting diode display of claim 2 , wherein
the anode is disposed on the cover layer.
4. The organic light emitting diode display of claim 3 , wherein
the pixel definition layer is disposed on the cover layer.
5. The organic light emitting diode display of claim 4 , wherein
the reflection forming layer is disposed on the cover layer.
6. The organic light emitting diode display of claim 1 , further comprising:
a driving wire between the substrate and the color filter and comprising a switching thin film transistor and a driving thin film transistor.
7. The organic light emitting diode display of claim 5 , wherein
the reflection forming layer and the pixel definition layer comprise substantially the same material as each other.
8. The organic light emitting diode display of claim 7 , wherein
the cathode is a reflection electrode and obliquely extends along the side of the reflection forming layer, so that the light emitted from the organic light emitting diode and progressing to the side of the organic light emitting diode is reflected by the cathode at the side of the reflection forming layer toward the substrate.
9. The organic light emitting diode display of claim 5 , wherein
all boundary of the blue color filter extends to a position corresponding to the pixel definition layer, and
each of boundary of the green color filter or the red color filter extends to a position corresponding to the reflection forming layer.