Photographing lens assembly, lens assembly driving module and electronic device

A lens assembly driving module, comprising:

• a photographing lens assembly comprising N lens elements and having an optical axis, the optical axis passing through the N lens elements, wherein N is a positive integer and the N lens elements are consisted of a first lens assembly group and a second lens assembly group, the first lens assembly group is close to an object side and the second lens assembly group is close to an image side;
• a first driving mechanism comprising a first coil member and a first magnet which correspond in position to each other, for driving the N lens elements to move along the optical axis of the photographing lens assembly;
• and
• a second driving mechanism comprising a second coil member and a second magnet which correspond in position to each other, for driving the second lens assembly group to move along the optical axis to cause a relative distance along the optical axis of two adjacent lens elements between the first lens assembly group and the second lens assembly group to vary, wherein among relative distances along the optical axis of each of adjacent lens elements of the N lens elements, only the relative distance along the optical axis of the two adjacent lens elements caused to vary by the second driving mechanism is variable;
• wherein the lens elements driven by the first driving mechanism are in the number of M, where M is a positive integer, and the M lens elements include a plastic lens element, satisfying relation N/2≤M≤N;
• wherein the lens elements driven by the second driving mechanism are in the number of F, where F is a positive integer, and the F lens elements include a plastic lens element, satisfying relation 1≤F<N/2;
• wherein the plastic lens element among the F lens elements has a greatest outer diameter among the N lens elements.