Non-polarized light string without rectification

A non-polarized light string without rectification, comprising a pair of conductive wires for connecting with a power supply and more than one LED modules connected in parallel to the pair of conductive wires;

• wherein
• each LED module comprises a current-limiting resistor and more than one LED unit, a first terminal of the current-limiting resistor is connected to one conductive wire, a second terminal of the current-limiting resistor is connected to the LED units, and the LED units are connected in series, then connected to the other conductive wire;
• each LED unit comprises one first light-emitting diode and one second light-emitting diode connected in parallel, a positive electrode and a negative electrode of the first light-emitting diode are correspondingly connected to a negative electrode and a positive electrode of the second light-emitting diode with electrodes of opposite polarity connected to each other;
• the first light-emitting diode and the second light-emitting diode of each LED unit are integrated on one chip with a distance between lighting parts of the pair of light-emitting diodes less than 1 mil, and each LED unit further comprises a light bowl, and the first light emitting diode and second light emitting diode are located in the same light bowl, such that an illumination region of a later light-emitting diode can quickly cover an illumination region of a previous light-emitting diode, so as to effectively avoid visible flicker.