Abstract: A material-removing heater device including: a first terminal portion defining a first electrode; a second terminal portion defining a second electrode; and a heating portion which connects the first terminal portion to the second terminal portion, the heating portion heatable by a flow of electrical current from the first terminal portion to the second terminal portion to remove a portion of material of a display device. The heating portion defines a lower end surface of the material-removing heater device at which the material-removing heater device contacts the material of the display device, the heating portion disposes the lower end surface to have a concave shape, and the heating portion which is heated deforms the lower end surface from the concave shape to have a planar shape.

Abstract: A display apparatus may include a base substrate including a first portion and a second portion smaller than the first portion, a plurality of pixels disposed on the first portion, a protection substrate disposed below the base substrate, and a groove disposed in a portion of the protection substrate and overlapped with the second portion. The groove may include a first region extending in a first direction, and a second region and a third region, which are arranged along the first direction, wherein the first region is interposed between the second region and the third region. The first and second portions may be arranged in a second direction crossing the first direction, and a width of each of the second and third regions may be larger than a first width of the first region, when measured in the second direction.

Abstract: A display apparatus may include a base substrate including a first portion and a second portion smaller than the first portion, a plurality of pixels disposed on the first portion, a protection substrate disposed below the base substrate, and a groove disposed in a portion of the protection substrate and overlapped with the second portion. The groove may include a first region extending in a first direction, and a second region and a third region, which are arranged along the first direction, wherein the first region is interposed between the second region and the third region. The first and second portions may be arranged in a second direction crossing the first direction, and a width of each of the second and third regions may be larger than a first width of the first region, when measured in the second direction.

Abstract: A display apparatus may include a base substrate including a first portion and a second portion smaller than the first portion, a plurality of pixels disposed on the first portion, a protection substrate disposed below the base substrate, and a groove disposed in a portion of the protection substrate and overlapped with the second portion. The groove may include a first region extending in a first direction, and a second region and a third region, which are arranged along the first direction, wherein the first region is interposed between the second region and the third region. The first and second portions may be arranged in a second direction crossing the first direction, and a width of each of the second and third regions may be larger than a first width of the first region, when measured in the second direction.

Abstract: A flexible substrate and a flexible display device including the same are disclosed. In one aspect, the flexible substrate includes a first substrate that is flexible and a metal wiring layer over the first substrate and having a first surface facing the first substrate, a second surface opposite to the first surface, and a plurality of holes penetrating the first and second surfaces. The holes are arranged in a plurality of rows. The holes comprise a first hole in an n-th row and a first hole in a (n?1)th row. The first hole of the n-th row is spaced apart from the first hole in the (n?1)th row by a first distance, and an edge of each of the holes is curved.

Abstract: A material-removing heater device including: a first terminal portion defining a first electrode; a second terminal portion defining a second electrode; and a heating portion which connects the first terminal portion to the second terminal portion, the heating portion heatable by a flow of electrical current from the first terminal portion to the second terminal portion to remove a portion of material of a display device. The heating portion defines a lower end surface of the material-removing heater device at which the material-removing heater device contacts the material of the display device, the heating portion disposes the lower end surface to have a concave shape, and the heating portion which is heated deforms the lower end surface from the concave shape to have a planar shape.

Abstract: A display apparatus may include a base substrate including a first portion and a second portion smaller than the first portion, a plurality of pixels disposed on the first portion, a protection substrate disposed below the base substrate, and a groove disposed in a portion of the protection substrate and overlapped with the second portion. The groove may include a first region extending in a first direction, and a second region and a third region, which are arranged along the first direction, wherein the first region is interposed between the second region and the third region. The first and second portions may be arranged in a second direction crossing the first direction, and a width of each of the second and third regions may be larger than a first width of the first region, when measured in the second direction.

Abstract: A flexible substrate and a flexible display device including the same are disclosed. In one aspect, the flexible substrate includes a first substrate that is flexible and a metal wiring layer over the first substrate and having a first surface facing the first substrate, a second surface opposite to the first surface, and a plurality of holes penetrating the first and second surfaces. The holes are arranged in a plurality of rows. The holes comprise a first hole in an n-th row and a first hole in a (n-1)th row. The first hole of the n-th row is spaced apart from the first hole in the (n-1)th row by a first distance, and an edge of each of the holes is curved.

Abstract: A stretchable display is disclosed. In one aspect, the stretchable display includes a plurality of pixel substrates arranged in a matrix having row and column directions. Each of the pixel substrates includes an island and a flexible hinge connecting the island to at least one of the adjacent pixel substrates. The island of each of the pixel substrates includes a plurality of first sides and a plurality of second sides. The flexible hinge of each of the pixel substrates includes a plurality of first flexible sub-hinges respectively extending from the first sides in the row direction and a plurality of second flexible sub-hinges respectively extending from the second sides in the column direction.

Abstract: A stretchable display is disclosed. In one aspect, the stretchable display includes a plurality of pixel substrates arranged in a matrix having row and column directions. Each of the pixel substrates includes an island and a flexible hinge connecting the island to at least one of the adjacent pixel substrates. The island of each of the pixel substrates includes a plurality of first sides and a plurality of second sides. The flexible hinge of each of the pixel substrates includes a plurality of first flexible sub-hinges respectively extending from the first sides in the row direction and a plurality of second flexible sub-hinges respectively extending from the second sides in the column direction.

Abstract: A display device includes a display panel, a protective member, a light guide member, a light source, and a light leakage preventing member. The display device includes a display surface concavely curved in a first direction. The light leakage preventing member is coupled to the protective member to be movable according to expansion or contraction of the light guide member. The light leakage preventing member contracts and expands according to the expansion or contraction of the light guide member, and includes an elastic part to prevent the light source from being damaged by the expansion of the light guide member.

Abstract: A display device includes a display panel, a protective member, a light guide member, a light source, and a light leakage preventing member. The display device includes a display surface concavely curved in a first direction. The light leakage preventing member is coupled to the protective member to be movable according to expansion or contraction of the light guide member. The light leakage preventing member contracts and expands according to the expansion or contraction of the light guide member, and includes an elastic part to prevent the light source from being damaged by the expansion of the light guide member.