Organic light emitting diode display for reducing reflection of external light

An organic light emitting diode (OLED) display comprising a pixel having a plurality of sub-pixels and a pixel defining layer,

• wherein the plurality of sub-pixels comprises:
• a first sub-pixel comprising a first anode and a first organic emission layer;
• a second sub-pixel comprising a second anode and a second organic emission layer;
• and
• a third sub-pixel comprising a third anode and a third organic emission layer,
• wherein the first anode, the second anode, and the third anode satisfy the following condition:
• W
• ⁢
• ⁢
• 1
• +
• W
• ⁢
• ⁢
• 2
• <
• 2
• ⁢
• W
• ⁢
• ⁢
• 3
• <
• 2
• 3
• ⁢
• P
• wherein W1, W2, and W3 respectively denote a width of the first anode, a width of the second anode, and a width of the third anode measured along a direction traversing the first sub-pixel, the second sub-pixel, and the third sub-pixel, and wherein P denotes a width of the pixel measured along the direction traversing the first sub-pixel, the second sub-pixel, and the third sub-pixel;
• and
• wherein the pixel defining layer is on edge portions of the first, second, and third anodes and has a first opening exposing a portion of the first anode, a second opening exposing a portion of the second anode, and a third opening exposing a portion of the third anode, and
• wherein the first anode, the second anode, the third anode, and the pixel defining layer satisfy the following condition:
• w1+w2+12 μm<W1+W2
• wherein w1 and w2 respectively denote a width of the first opening and a width of the second opening measured along the direction traversing the first, second, and third sub-pixels;
• and
• wherein the first, second, and third anodes are reflective electrodes.