Organic light emitting display device having layer to control charge transfer

An organic light emitting display device, comprising:

• an anode on a substrate;
• a first hole transfer layer on the anode;
• a first emission layer on the first hole transfer layer;
• a first electron transfer layer on the first emission layer;
• an N-type charge generation layer on the first electron transfer layer;
• a second hole transfer layer on the N-type charge generation layer;
• a first emission control layer on the second hole transfer layer, an absolute value of a highest occupied molecular orbital (HOMO) energy level of the first emission control layer being greater than an absolute value of a HOMO energy level of the second hole transfer layer;
• a second emission layer on the first emission control layer;
• a second electron transfer layer on the second emission layer;
• and
• a cathode on the second electron transfer layer,
• wherein a hole mobility of the first emission control layer is 1.0×10−1 to 1.0×10−2 times lower than a hole mobility of the second hole transfer layer.