A display panel arranged to be driven in any one mode of an external light transmission mode and an external light reflection mode, the display panel comprising: a first plate including a first substrate, at least one first electrode layer formed on an inner surface of the first substrate, and a first polarizing film formed on an outer surface of the first substrate and having a first transmission axis; a second plate including a second substrate, at least one second electrode layer formed on an inner surface of the second substrate, and a second polarizing film formed on an outer surface of the second substrate and having a second transmission axis, wherein the second transmission axis is either perpendicular to or parallel to the first transmission axis; a liquid crystal, LC, layer between the first plate and the second plate; and an LC driving power supply connected between the at least one first electrode layer and the at least one second electrode layer and configured to selectively provide an LC driving voltage to the LC layer, wherein the LC layer has a first arrangement in which a polarization direction of incident light is changed by a preset angle in an entire region of the LC layer when the LC driving voltage is not applied, or a second arrangement in which the polarization direction of the incident light is maintained in at least a partial region of the LC layer, to which the LC driving voltage is applied, when the LC driving voltage is applied, and wherein the first polarizing film includes an absorptive polarizing film, and the second polarizing film includes a reflective polarizing film; characterised in that any one of the at least one first electrode layer and the at least one second electrode layer partially covers the inner surface of the corresponding substrate on which it is formed by including a plurality of image-specifying openings, and in that when the LC driving power supply applies the LC driving voltage to the LC layer, an image corresponding to a shape of the any one of the first electrode layer and the second electrode layer that partially covers the inner surface of the corresponding substrate is formed at the first plate. a first plate including a first substrate, at least one first electrode layer formed on an inner surface of the first substrate, and a first polarizing film formed on an outer surface of the first substrate and having a first transmission axis; a second plate including a second substrate, at least one second electrode layer formed on an inner surface of the second substrate, and a second polarizing film formed on an outer surface of the second substrate and having a second transmission axis, wherein the second transmission axis is either perpendicular to or parallel to the first transmission axis; a liquid crystal, LC, layer between the first plate and the second plate; and an LC driving power supply connected between the at least one first electrode layer and the at least one second electrode layer and configured to selectively provide an LC driving voltage to the LC layer, wherein the LC layer has a first arrangement in which a polarization direction of incident light is changed by a preset angle in an entire region of the LC layer when the LC driving voltage is not applied, or a second arrangement in which the polarization direction of the incident light is maintained in at least a partial region of the LC layer, to which the LC driving voltage is applied, when the LC driving voltage is applied, and wherein the first polarizing film includes an absorptive polarizing film, and the second polarizing film includes a reflective polarizing film; characterised in that any one of the at least one first electrode layer and the at least one second electrode layer partially covers the inner surface of the corresponding substrate on which it is formed by including a plurality of image-specifying openings, and in that when the LC driving power supply applies the LC driving voltage to the LC layer, an image corresponding to a shape of the any one of the first electrode layer and the second electrode layer that partially covers the inner surface of the corresponding substrate is formed at the first plate.