A refrigerator of the present disclosure turns on a heater, which supplies heat to an ice making cell, in at least partial section while a cooler supplies cold to the ice making cell so that bubbles dissolved in the water within the ice making cell moves from a portion, at which the ice is made, toward the water that is in a liquid state to make transparent ice. A defrosting process may be performed when a defrosting start condition is satisfied in a state in which the heater is turned on. In this case, the amount of cold supply of the cooler in the defrosting process can be reduced more than the amount of cold supply of the cooler before the defrosting start condition is satisfied.

The refrigerator according to the present invention may comprise: a first tray forming a part of ice-making cells; and a second tray assembly forming the other part of the ice-making cells. The first tray assembly comprises a first tray and a first tray case which supports the first tray, and the second tray assembly comprises a second tray and a second tray case which supports the second tray, and the degree of adhesion of ice to any one of the first and second trays is smaller than the degree of adhesion of ice to any one of the first and second tray cases or the degree of adhesion of ice to a metal.

The refrigerator according to the present invention may comprise: a first tray forming a part of ice-making cells; and a second tray assembly forming the other part of the ice-making cells. The first tray assembly comprises a first tray and a first tray case which supports the first tray, and the second tray assembly comprises a second tray and a second tray case which supports the second tray, and the degree of adhesion of ice to any one of the first and second trays is smaller than the degree of adhesion of ice to any one of the first and second tray cases or the degree of adhesion of ice to a metal.

An ice maker, according to the present invention, comprises: a first tray forming part of an ice-making cell; a second tray forming another part of the ice-making cell; and a heater which is disposed so as to be adjacent to the first or the second tray, wherein the heater operates during a period when cold air is supplied to the first tray and the second tray and ice making takes place, and supplies heat to the first tray and/or the second tray.

An ice maker, according to the present invention, comprises: a first tray forming part of an ice-making cell; a second tray forming another part of the ice-making cell; and a heater which is disposed so as to be adjacent to the first or the second tray, wherein the heater operates during a period when cold air is supplied to the first tray and the second tray and ice making takes place, and supplies heat to the first tray and/or the second tray.

A refrigerator may include a first tray assembly forming a part of an ice making cell, a second tray assembly forming another part of the ice making cell, heater provided adjacent to at least one of the first or second tray assemblies, a driver connected to the second tray assembly, and a control unit to control the heater and the driver.

The driving unit includes a cam capable of being connected to the second tray assembly, and a path in which a lever moves is formed inside the cam.

A refrigerator may include a first tray assembly forming a part of an ice making cell, a second tray assembly forming another part of the ice making cell, heater provided adjacent to at least one of the first or second tray assemblies, a driver connected to the second tray assembly, and a control unit to control the heater and the driver.

The driving unit includes a cam capable of being connected to the second tray assembly, and a path in which a lever moves is formed inside the cam.

The refrigerator according to the present invention may comprise: a first tray assembly forming a part of ice-making cells; and a second tray assembly forming the other part of the ice-making cells. In order that ice can be produced in the direction of ice-making cells formed by any one of the first and second tray assemblies to ice-making cells formed by the other tray assembly, following the start of an ice-making process, the one tray assembly comprises a first part, and the first part comprises: a first surface forming a part of the ice-making cells; and a first deformation-resistant reinforcement part extending from the first surface in the vertical direction away from a heater.

The refrigerator according to the present invention may comprise: a first tray assembly forming a part of ice-making cells; and a second tray assembly forming the other part of the ice-making cells. In order that ice can be produced in the direction of ice-making cells formed by any one of the first and second tray assemblies to ice-making cells formed by the other tray assembly, following the start of an ice-making process, the one tray assembly comprises a first part, and the first part comprises: a first surface forming a part of the ice-making cells; and a first deformation-resistant reinforcement part extending from the first surface in the vertical direction away from a heater.

An ice maker, according to the present invention, comprises: a first tray for defining one portion of the ice-making cell, which is a space for creating ice; a second tray for defining the other portion of the ice-making cell; a heater for providing heat to the second tray; and a heater case having the heater coupled thereto, wherein in an ice-making process, at least one portion of the heater case may move along with the second tray.