This paper presents likely the world's smallest electrostatic visible light highly space-efficient transmissive microoptical switches (TMOS) for an integrated MEMS optical display system. Each TMOS represents one pixel with 150µm×150µm spacing in a display module. It is demonstrated that a zigzag electrostatic actuator of 47µm×160µm size can achieve a maximum static lateral displacement of 10µm at 38V. Depending on the zigzag actuator design, these devices have a mechanical resonance frequency of up to 18.6kHz.