This part of IEC 62868 specifies safety requirements for semi-integrated organic light emitting diode (OLED) modules operating with an external controlgear connected to the mains voltage, and which, in addition, have a control means inside ("semi-integrated") for operation under constant voltage, constant current or constant power and have a rated voltage up to 120 V ripple free DC or 50 V AC RMS at 50 Hz or 60 Hz. NOTE 1: The Classification of OLED modules is given in Annex A. NOTE 2: The classification of OLED modules according to the power supply method is illustrated in Annex A of IEC 62868-1:2020 and IEC 62868-1:2020/AMD1: . NOTE 3: Unless otherwise specified, the flexible OLED tiles or panels, or the OLED tiles or panels complying with this document are deemed to comply with the requirements of IEC 62868-2-3 or IEC 62868-2-4.