Abstract: A flexible display device includes: a display panel including a display substrate, an organic light emitting element formed on the display substrate, and a thin film encapsulation layer covering the organic light emitting element; a first insulation layer formed under the display panel; a lower protection film formed under the first insulation layer; and a reinforcement layer formed under the lower protection film, between the lower protection film and the first insulation layer, or on the display panel, wherein the reinforcement layer is configured to prevent damage to the display panel due to bending stress.

Abstract: A touch panel display device including a display panel displaying an image; a polarizing plate attached onto the display panel; a touch panel on and spaced apart from an upper portion of the polarizing plate; a resin layer between the touch panel and the polarizing plate, the resin layer bonding the touch panel and the polarizing plate; a window on the touch panel; and a reinforcement layer between the window and the touch panel or between the touch panel and the resin layer, wherein the reinforcement layer prevents damage to the touch panel caused by bending stress.

Abstract: A touch panel display device including a display panel displaying an image; a polarizing plate attached onto the display panel; a touch panel on and spaced apart from an upper portion of the polarizing plate; a resin layer between the touch panel and the polarizing plate, the resin layer bonding the touch panel and the polarizing plate; a window on the touch panel; and a reinforcement layer between the window and the touch panel or between the touch panel and the resin layer, wherein the reinforcement layer prevents damage to the touch panel caused by bending stress.

Abstract: A flexible display device includes: a display panel including a display substrate, an organic light emitting element formed on the display substrate, and a thin film encapsulation layer covering the organic light emitting element; a first insulation layer formed under the display panel; a lower protection film formed under the first insulation layer; and a reinforcement layer formed under the lower protection film, between the lower protection film and the first insulation layer, or on the display panel, wherein the reinforcement layer is configured to prevent damage to the display panel due to bending stress.

Abstract: A method of manufacturing composite yarn by doubling and twisting paper tape and back warp yarn in one process without doubling paper yarn and back warp yarn after fabricating the paper yarn using the paper tape, includes: passing paper tape unwound from a bobbin by external force through the bobbin in an axial direction of the bobbin, and rotating the paper tape together with additionally-supplied back warp yarn about the axis of the bobbin to twist the paper tape and the back warp yarn together.

Abstract: A method of manufacturing composite yarn by doubling and twisting paper tape and back warp yarn in one process without doubling paper yarn and back warp yarn after fabricating the paper yarn using the paper tape, includes: passing paper tape unwound from a bobbin by external force through the bobbin in an axial direction of the bobbin, and rotating the paper tape together with additionally-supplied back warp yarn about the axis of the bobbin to twist the paper tape and the back warp yarn together.