Refrigerator having panel assembly

1. A refrigerator comprising:

a cabinet configured to form a storage space;

a door configured to open and close the cabinet and rotatably connected to the cabinet by a hinge, the door including an outer plate, a door liner connected to the outer plate, and an opening;

a panel assembly configured to cover the opening, the panel assembly including a front panel, a rear panel spaced apart from a rear surface of the front panel, and a spacer provided between the front panel and the rear panel, wherein the front panel has a size greater than that of the rear panel and includes a viewing area and a bezel area disposed outside the viewing area;

a sensor disposed at the bezel area of the front panel; and

an electric wire electrically connected to the sensor and a controller.

2. The refrigerator of claim 1 , wherein the electric wire extends along an outer periphery of the panel assembly.

3. The refrigerator of claim 1 , further comprising a lighting unit provided in the storage space and to illuminate an inside of the refrigerator,

wherein, based on the sensor detecting a user input signal applied on the front panel, the lighting unit is turned on such that an interior of the storage space is visible through the viewing area of the front panel when the lighting unit is turned on in a state in which the door closes the storage space.

4. The refrigerator of claim 3 , further comprising a display unit configured to display an operation state of the refrigerator, wherein the display unit is disposed behind the rear panel.

5. The refrigerator of claim 4 , wherein the display unit is disposed in the opening of the door.

6. The refrigerator of claim 3 , wherein the display unit is turned on based on the sensor detecting the user input signal applied on the front panel.

7. The refrigerator of claim 1 , wherein the sensor is provided closer to a boundary between the viewing area and the bezel area than an outer edge of the front panel.

8. The refrigerator of claim 1 , further comprising a sub door rotatable with respect to the cabinet, and a second hinge connected to the sub door,

wherein the sub door includes the panel assembly, and the electric wire extends along the second hinge.

9. A refrigerator comprising:

a cabinet defining an inner space;

a first door to open and close the inner space and connected to the cabinet by a first hinge, the first door including a first frame that has a first opening;

a second door to open and close the first opening, the second door including a second frame that has a second opening and a panel assembly to cover the second opening; and

a second hinge connected to the second door,

wherein the panel assembly includes:

a front panel,

a rear panel spaced apart from a rear surface of the front panel, and

a spacer provided between the front panel and the rear panel, wherein the front panel has a size greater than that of the rear panel and includes a viewing area and a bezel area disposed outside the viewing area;

a sensor disposed at the bezel area of the front panel; and

an electric wire electrically connected to the sensor and a controller, wherein the electric wire extends toward the first door via the second hinge.

10. The refrigerator of claim 9 , wherein the second door further includes a cap decoration that forms an upper or a lower side of the second door to receive the sensor.

11. The refrigerator of claim 9 , wherein the second frame comprises an electric wire guide part to guide the electric wire toward the second hinge.

12. The refrigerator of claim 11 , wherein the second door further includes a hinge cover which shields at least a portion of the second hinge, and

wherein the electric wire extends along a space between the second hinge and the hinge cover.

13. The refrigerator of claim 9 , further comprising a display unit configured to display an operation state of the refrigerator, wherein the display unit is disposed behind the rear panel.

14. The refrigerator of claim 13 , wherein the display unit is disposed in the first door.

15. The refrigerator of claim 9 , wherein the display unit is turned on based on the sensor detecting the user input signal applied on the front panel.