An electronic device comprising: a case including a rear member and side members disposed at opposite ends of the rear member; a first structure, at least part of which is disposed inside the case; a second structure slidably connected to the first structure; a display disposed on the second structure and configured to move together with the second structure relative to the first structure, the display including a first region and a second region extending from the first region; and a conductive structure disposed between at least part of the first structure and at least part of the second structure and configured to electrically connect the first structure and the second structure, wherein a first state of the electronic device is a state in which the first region is exposed on a front surface of the electronic device and the second region is located inside the case to face the rear member, wherein a second state of the electronic device is a state in which at least part of the second region, together with the first region, is exposed on the front surface of the electronic device as at least part of the second structure slides in a first direction in the first state, wherein the conductive structure includes: a first contact member disposed on one of the first structure or the second structure; and a second contact member and a third contact member disposed on the first structure or the second structure which the first contact member is not disposed on, wherein the second contact member and the third contact member are spaced apart from each other by a first distance in a sliding direction of the second structure, wherein the first contact member is configured to make contact with the second contact member in the first state to electrically connect the first structure and the second structure and is configured to make contact with the third contact member in the second state to electrically connect the first structure and the second structure, and wherein the second structure is configured to slide relative to the first structure by the first distance when the electronic device is changed from the first state to the second state or from the second state to the first state. a case including a rear member and side members disposed at opposite ends of the rear member; a first structure, at least part of which is disposed inside the case; a second structure slidably connected to the first structure; a display disposed on the second structure and configured to move together with the second structure relative to the first structure, the display including a first region and a second region extending from the first region; and a conductive structure disposed between at least part of the first structure and at least part of the second structure and configured to electrically connect the first structure and the second structure, wherein a first state of the electronic device is a state in which the first region is exposed on a front surface of the electronic device and the second region is located inside the case to face the rear member, wherein a second state of the electronic device is a state in which at least part of the second region, together with the first region, is exposed on the front surface of the electronic device as at least part of the second structure slides in a first direction in the first state, wherein the conductive structure includes: a first contact member disposed on one of the first structure or the second structure; and a second contact member and a third contact member disposed on the first structure or the second structure which the first contact member is not disposed on, wherein the second contact member and the third contact member are spaced apart from each other by a first distance in a sliding direction of the second structure, wherein the first contact member is configured to make contact with the second contact member in the first state to electrically connect the first structure and the second structure and is configured to make contact with the third contact member in the second state to electrically connect the first structure and the second structure, and wherein the second structure is configured to slide relative to the first structure by the first distance when the electronic device is changed from the first state to the second state or from the second state to the first state. a first contact member disposed on one of the first structure or the second structure; and a second contact member and a third contact member disposed on the first structure or the second structure which the first contact member is not disposed on, wherein the second contact member and the third contact member are spaced apart from each other by a first distance in a sliding direction of the second structure, wherein the first contact member is configured to make contact with the second contact member in the first state to electrically connect the first structure and the second structure and is configured to make contact with the third contact member in the second state to electrically connect the first structure and the second structure, and wherein the second structure is configured to slide relative to the first structure by the first distance when the electronic device is changed from the first state to the second state or from the second state to the first state.