Active OLED display, method of operating an active OLED display and compound

An active OLED display, comprising

• a plurality of OLED pixels, each of the OLED pixels comprising an anode, a cathode, and a stack of organic layers, wherein the stack of organic layers
• is provided between and in contact with the cathode and the anode, and
• comprises an electron transport layer, a hole transport layer, and a light emitting layer provided between the hole transport layer and the electron transport layer, and
• a driving circuit configured for separately driving the pixels of the plurality of OLED pixels,
• wherein, for the plurality of OLED pixels, a common hole transport layer is formed by the hole transport layers provided in the stack of organic layers of the plurality of OLED pixels, the common hole transport layer comprising a hole transport matrix material and an electrical p-dopant, and wherein the electrical conductivity of the common hole transport layer is lower than 1×10−3 S·m−1 and higher than 1×10−8 S·m−1, and
• wherein the common hole transport layer has a thickness of less than 50 nm.