Organic light emitting device, method of manufacturing the same, and shadow mask therefor

1. An organic light emitting device, comprising:

a first pixel comprising a first red subpixel, a first green subpixel, and a first blue subpixel, and

a second pixel comprising a second red subpixel, a second green subpixel, and a second blue subpixel,

wherein the first pixel and the second pixel are adjacent to each other in a column direction,

wherein the first green subpixel and the second blue subpixel are adjacent to each other in the column direction,

wherein the first blue subpixel and the second red subpixel are adjacent to each other in the column direction,

wherein the first and second red subpixels have substantially the same size and comprise a pixel electrode, a common electrode, and a red organic light emitting member, respectively,

wherein the first and second green subpixels have substantially the same size and comprise a pixel electrode, a common electrode, and a green organic light emitting member, respectively,

wherein the first and second blue subpixels have substantially the same size and comprise a pixel electrode, a common electrode, and a blue organic light emitting member, respectively,

wherein each of the first and second blue subpixels is continuous and undivided;

wherein the first red subpixel and the first green subpixel have substantially the same size,

wherein the first blue subpixel has substantially the same width as the first red subpixel and the first green subpixel,

wherein an area of the first blue subpixel is larger than a sum of an area of the first red subpixel and an area of the first green subpixel,

wherein the red organic light emitting member and the green organic light emitting member each have a different thickness from the blue organic light emitting member,

wherein the red organic light emitting member and the green organic light emitting member have substantially a same thickness, and

wherein the pixel electrode of the first red subpixel has a different thickness from the pixel electrode of the first green subpixel.

2. The organic light emitting device of claim 1 , wherein the first and second red subpixels, the first and second green subpixels, and the first and second blue subpixels further comprise a reflecting electrode arranged under the pixel electrode, and

an interval between the reflecting electrode and the common electrode in the first and second red subpixels is different from the interval between the reflecting electrode and the common electrode in the first and second green subpixels.

3. The organic light emitting device of claim 2 , wherein:

the interval between the reflecting electrode and the common electrode in the first and second red subpixels is equivalent to a total thickness of the pixel electrode of the first and second red subpixels and the red organic light emitting member; and

the interval between the reflecting electrode and the common electrode in the first and second green subpixels is equivalent to a total thickness of the pixel electrode of the first and second green subpixel and the green organic light emitting member.

4. The organic light emitting device of claim 2 , wherein the common electrode is a translucent electrode.

5. The organic light emitting device of claim 4 , wherein the interval between the reflecting electrode and the common electrode is an integer multiple of the wavelength of the corresponding color of the corresponding subpixel.

6. The organic light emitting device of claim 4 , wherein:

the reflecting electrode and the translucent electrode in each subpixel comprise a metal of magnesium, aluminum, silver, or an alloy thereof; and

the translucent electrode is thinner than the reflecting electrode.

7. The organic light emitting device of claim 1 , wherein the blue organic light emitting member comprises a hole injection layer, a hole transport layer, a blue emission layer, an electron transport layer, and an electron injection layer that are sequentially disposed.

8. The organic light emitting device of claim 1 , wherein the red organic light emitting member and the green organic light emitting member have substantially a same thickness as each other.

9. The organic light emitting device of claim 1 , wherein the common electrode in each subpixel comprises aluminum.

10. The organic light emitting device of claim 1 , wherein the pixel electrode of the first blue subpixel has substantially a same thickness as one of the pixel electrodes of the first red subpixel and the first green subpixel.

11. An organic light emitting device comprising:

a red subpixel comprising a pixel electrode, a common electrode, and a red organic light emitting member;

a green subpixel comprising a pixel electrode, a common electrode, and a green organic light emitting member; and

a blue subpixel comprising a pixel electrode, a common electrode, and a blue organic light emitting member, the blue subpixel having a larger size than the red subpixel, and the blue subpixel having a larger size than the green subpixel,

wherein:

one red subpixel, one green subpixel, and one blue subpixel form a unit pixel;

the blue subpixel is continuous and undivided;

the red subpixel and the green subpixel have substantially the same size;

the blue subpixel has substantially the same width as the red subpixel and the green subpixel;

an area of the blue subpixel is larger than a sum of an area of the red subpixel and an area of the green subpixel;

a first unit pixel comprises the red subpixel and the green subpixel, which are alternately arranged according to a first column, and the blue subpixel, which is arranged according to a second column;

a second unit pixel that is symmetrical in left and right directions; and

the red organic light emitting member and the green organic light emitting member each have a different thickness from the blue organic light emitting member,

wherein the red organic light emitting member and the green organic light emitting member have substantially a same thickness, and

wherein the pixel electrode of the red subpixel has a different thickness from the pixel electrode of the green subpixel.

12. The organic light emitting device of claim 11 , wherein the red organic light emitting member and the green organic light emitting member have substantially a same thickness as each other.

13. The organic light emitting device of claim 11 , wherein the common electrode in each subpixel comprises aluminum.

14. The organic light emitting device of claim 11 , wherein the pixel electrode of the blue subpixel has substantially a same thickness as one of the pixel electrodes of the red subpixel and the green subpixel.