Abstract: A display device according to one or more embodiments of the disclosure includes a pixel circuit layer including a base layer and circuit elements on the base layer; and a display layer on the pixel circuit layer. The display layer includes a first electrode on the pixel circuit layer; an insulating layer on the first electrode; a second electrode on the insulating layer; a light emitting stacked structure on the second electrode and including a first insulating layer, a second insulating layer, and a light emitting layer between the first insulating layer and the second insulating layer; and a third electrode on the light emitting stacked structure. The light emitting layer includes a two-dimensional material, is separated from the second electrode by the first insulating layer, and is separated from the third electrode by the second insulating layer.

Abstract: A mounting system for a portable device includes a top case, a bottom case coupled to the top case, and first and second arms on two sides of the top case and the bottom case and spaced away from each other. Each of the first and second arms include a first section and a second section. In a first state where the top case is pushed toward the bottom case and a first distance is between the first and second arms, the first sections protrude outside from the top case. In a second state where the second sections are pushed toward each other and a second distance smaller than the first distance is between the first and second arms, the first sections do not protrude outside from the top case or protrude outside from the top case less than in the first state.

Abstract: A mounting system for a portable device includes a top case, a bottom case coupled to the top case, and first and second arms on two sides of the top case and the bottom case and spaced away from each other. Each of the first and second arms include a first section and a second section. In a first state where the top case is pushed toward the bottom case and a first distance is between the first and second arms, the first sections protrude outside from the top case. In a second state where the second sections are pushed toward each other and a second distance smaller than the first distance is between the first and second arms, the first sections do not protrude outside from the top case or protrude outside from the top case less than in the first state.