Image sensing device

1. An image sensing device, comprising:

an image sensing chip having a front surface, wherein the front surface defines an image sensing region thereon;

an optical module, comprising:

a barrel directly disposed on and adjacent to the front surface and around the image sensing region; and

at least a transparent element disposed in the barrel and facing to the image sensing region; and

a protecting element covering an area of the front surface outside the optical module and surrounding the barrel.

2. The image sensing device of claim 1 , further comprising micro lenses located on the front surface of the image sensing chip.

3. The image sensing device of claim 2 , wherein the micro lenses are located on color filter patters at the front surface of the image sensing chip.

4. The image sensing device of claim 1 , wherein the barrel has a top surface, and wherein the protecting element extends to cover a portion of the top surface of the barrel.

5. The image sensing device of claim 1 , wherein the protecting element extends to cover a plurality of side walls of the image sensing chip.

6. The image sensing device of claim 1 , wherein the protecting element is a guarding ring sleeved on the barrel.

7. The image sensing device of claim 6 , wherein material of the protecting element is selected from a group consisting of metal, plastic, and ceramic.

8. The image sensing device of claim 6 , wherein the barrel has a top surface, and wherein the protecting element extends to cover a portion of the top surface of the barrel.

9. The image sensing device of claim 6 , wherein the protecting element is adhered to the barrel and the image sensing chip through an adhesive.

10. The image sensing device of claim 1 , wherein the barrel is adhered to the front surface through an adhesive.

11. The image sensing device of claim 1 , wherein an orthogonal projection area of the optical module on the front surface is less than an area of the front surface and is more than an area of the image sensing region.

12. The image sensing device of claim 1 , wherein the image sensing region comprises a plurality of light sensitive units arranged in an array and a plurality of color filter patterns corresponding to the light sensitive units, and wherein the color filter patterns are respectively disposed on the light sensitive units.

13. The image sensing device of claim 12 , wherein the image sensing region further comprises a plurality of micro lenses corresponding to the color filter patterns, and wherein the micro lenses are respectively disposed on the color filter patterns.

14. The image sensing device of claim 12 , wherein the color filter patterns comprise a plurality of red filter patterns, a plurality of green filter patterns, and a plurality of blue filter patterns.

15. The image sensing device of claim 1 , wherein the image sensing chip is a front side illumination CMOS image sensing chip.

16. The image sensing device of claim 1 , wherein the image sensing chip is a back side illumination CMOS image sensing chip.

17. The image sensing device of claim 1 , further comprising a substrate, wherein the image sensing chip is disposed on a supporting surface of the substrate and is electrically connected to the substrate.

18. The image sensing device of claim 17 , wherein the image sensing chip comprises a plurality of through silicon vias, and wherein the image sensing chip is electrically connected to the substrate through the through silicon vias.

19. The image sensing device of claim 17 , wherein the substrate comprises a plurality of electrically connecting portions disposed on a rear surface opposite to the supporting surface.

20. The image sensing device of claim 1 , wherein the optical module is a lens module, and wherein the transparent element includes at least a lens.