Organic light-emitting diode display panel

An organic light-emitting diode (OLED) display panel, comprising:

• a first pixel, including:
• a first sub-pixel, including:
• a first light emitting unit for emitting a first color light;
• and
• a second light emitting unit for emitting a second color light, the second light emitting unit and the first light emitting unit being stacked;
• and
• a second sub-pixel, including:
• a third light emitting unit for emitting a third color light;
• and
• a fourth light emitting unit for emitting a fourth color light, the fourth light emitting unit and the third light emitting unit being stacked;
• wherein a combination of the first color light, the second color light, the third color light and the fourth color light comprises a red light, a green light and a blue light;
• a combination of the first color light and the second color light is different from a combination of the third color light and the fourth color light.