A light emitting device comprising: a light emitting element including a first base member, and a stacked body provided to the first base member; and a second base member provided with the light emitting element, wherein the stacked body is located between the first base member and the second base member, the stacked body includes a first columnar section having a first height, and a second columnar section having a second height smaller than the first height, the first columnar section and the second columnar section respectively include a first semiconductor layer, a second semiconductor layer different in conductivity type from the first semiconductor layer, and a light emitting layer disposed between the first semiconductor layer and the second semiconductor layer, the light emitting layer being capable of emitting light in response to a current injected into the light emitting layer, the first columnar section and the second base member are electrically connected to each other via a first conductive member between the stacked body and the second base member, the second columnar section and the second base member are electrically connected to each other via a second conductive member between the stacked body and the second base member, the first conductive member has a third height, and the second conductive member has a fourth height larger than the third height, wherein the second base member is a mounting board which has interconnections (22a-d), and the interconnections are connected to the first conductive member and the second conductive member respectively, a first insulating layer is disposed between the first base member and the second base member, the first conductive member is disposed in a first opening section provided to the first insulating layer, the second conductive member is disposed in a second opening section provided to the first insulating layer, characterized in that a second insulating layer is disposed between the first columnar section and the second columnar section, and the first insulating layer and the second insulating layer are formed of different materials. a light emitting element including a first base member, and a stacked body provided to the first base member; and a second base member provided with the light emitting element, wherein the stacked body is located between the first base member and the second base member, the stacked body includes a first columnar section having a first height, and a second columnar section having a second height smaller than the first height, the stacked body includes a first columnar section having a first height, and a second columnar section having a second height smaller than the first height, the first columnar section and the second columnar section respectively include a first semiconductor layer, a second semiconductor layer different in conductivity type from the first semiconductor layer, and a light emitting layer disposed between the first semiconductor layer and the second semiconductor layer, the light emitting layer being capable of emitting light in response to a current injected into the light emitting layer, a first semiconductor layer, a second semiconductor layer different in conductivity type from the first semiconductor layer, and a light emitting layer disposed between the first semiconductor layer and the second semiconductor layer, the light emitting layer being capable of emitting light in response to a current injected into the light emitting layer, the first columnar section and the second base member are electrically connected to each other via a first conductive member between the stacked body and the second base member, the second columnar section and the second base member are electrically connected to each other via a second conductive member between the stacked body and the second base member, the first conductive member has a third height, and the second conductive member has a fourth height larger than the third height, wherein the second base member is a mounting board which has interconnections (22a-d), and the interconnections are connected to the first conductive member and the second conductive member respectively, a first insulating layer is disposed between the first base member and the second base member, the first conductive member is disposed in a first opening section provided to the first insulating layer, the second conductive member is disposed in a second opening section provided to the first insulating layer, characterized in that a second insulating layer is disposed between the first columnar section and the second columnar section, and the first insulating layer and the second insulating layer are formed of different materials.