Image sensor driving mechanism

1. An image sensor driving mechanism, comprising:

a fixed assembly;

a first movable assembly, wherein the first movable assembly is movable relative to the fixed assembly and comprises:

a holder, connected to an image sensor; and

a circuit component, configured to move the image sensor relative to the fixed assembly, and electrically connected to the image sensor, wherein the circuit component comprises a circuit main body, a mounting portion, and a movable suspension arm, the circuit main body is connected to the holder, the mounting portion is connected to the fixed assembly, and the movable suspension arm is elastically connected to the circuit main body and the mounting portion; and

a first driving assembly, configured to drive the first movable assembly to move relative to the fixed assembly;

wherein the movable suspension arm comprises a first section and a second section, the first section and the second section are disposed between the fixed assembly and the holder, and the extending direction of the first section and the extending direction of the second section are perpendicular to an optical axis.

2. The image sensor driving mechanism as claimed in claim 1 , further comprising:

a second movable assembly, movably disposed in the fixed assembly and comprising a carrier, wherein the carrier is configured to hold an optical member; and

a second driving assembly, configured to drive the second movable assembly to move relative to the fixed assembly along the optical axis;

wherein the second movable assembly is disposed between the fixed assembly and the first movable assembly.

3. The image sensor driving mechanism as claimed in claim 2 , wherein a gap is formed between the first movable assembly and a second movable assembly.

4. The image sensor driving mechanism as claimed in claim 2 , wherein the first driving assembly is disposed between the fixed assembly and the second movable assembly.

5. The image sensor driving mechanism as claimed in claim 1 , wherein the holder has at least one receiving portion, and a portion of the circuit component is accommodated in the receiving portion.

6. The image sensor driving mechanism as claimed in claim 5 , wherein the movable suspension arm further comprises a connecting portion connected to the first section and the circuit main body, the extending direction of the connecting portion is different from the extending direction of the first section, and a portion of the connecting portion is accommodated in the receiving portion.

7. The image sensor driving mechanism as claimed in claim 1 , wherein the image sensor is disposed between the fixed assembly and the first movable assembly.

8. The image sensor driving mechanism as claimed in claim 1 , wherein the extending direction of the first section is different from the extending direction of the second direction.

9. The image sensor driving mechanism as claimed in claim 1 , wherein the movable suspension arm is movable relative to the circuit main body and the fixed assembly.

10. The image sensor driving mechanism as claimed in claim 1 , wherein the first section overlaps the holder as seen from a direction that is perpendicular to the optical axis.

11. The image sensor driving mechanism as claimed in claim 1 , the second section overlaps the holder as seen from a direction that is perpendicular to the optical axis.

12. The image sensor driving mechanism as claimed in claim 1 , wherein the fixed assembly comprises a lateral wall, and the lateral wall is disposed between the mounting portion and the second section.

13. The image sensor driving mechanism as claimed in claim 1 , wherein the first driving assembly comprises:

a first driving base, affixed to the fixed assembly;

a second driving base, affixed to the holder; and

a plurality of biasing wires, connected to the first driving base and the second driving base.

14. The image sensor driving mechanism as claimed in claim 13 , wherein the second driving base is shiftable and rotatable relative to the first driving base.

15. The image sensor driving mechanism as claimed in claim 13 , wherein the second driving base is an annular structure surrounding the optical axis.

16. The image sensor driving mechanism as claimed in claim 1 , wherein the fixed assembly has a frame surface facing the first movable assembly and perpendicular to the optical axis, the frame surface has a through hole corresponding to the image sensor, and a gap is formed between the frame surface and the first movable assembly.

17. The image sensor driving mechanism as claimed in claim 1 , wherein a width of the first section is greater than a thickness of the first section, the width is measured along a direction parallel to the optical axis, and the thickness is measured along a direction that is perpendicular to the optical axis.

18. The image sensor driving mechanism as claimed in claim 1 , wherein the circuit component has a circuit component surface, continuously arranged on the circuit main body and the first section, wherein the circuit component surface on the circuit main body faces the image sensor, and the circuit component surface on the first section is parallel to the optical axis.

19. The image sensor driving mechanism as claimed in claim 1 , wherein the circuit component further comprises an additional movable suspension arm, and the movable suspension arm and the additional movable suspension arm are symmetric relative to the optical axis.

20. The image sensor driving mechanism as claimed in claim 19 , wherein the movable suspension arm and the additional movable suspension arm are rotational symmetric relative to the optical axis.