A 3-dimensional image display apparatus comprising: a display panel comprising a plurality of pixels; and an electrowetting lens array including a plurality of electrowetting lens cells, each of the plurality of electrowetting lens cells having an electrically adjustable variable focal distance, wherein the plurality of electrowetting lens cells are 2-dimensionally arrayed; the display panel is configured to sequentially display at least two images having different depths; and the electrowetting lens array is configured to sequentially project the at least two images at at least two different focal distances corresponding to the depths of the at least two images, wherein each of the electrowetting lens cells comprises: a lower transparent substrate and an upper transparent substrate; vertical barriers extending from an upper surface of the lower transparent substrate, wherein the vertical barriers define a plurality of spaces therebetween; a plurality of electrodes (303a,303b) disposed on sidewalls of the vertical barriers; a dielectric layer which covers the plurality of electrodes; a hydrophobic layer disposed on a surface of the dielectric layer; a plurality of wiring lines (306a,306b) disposed on the upper surface of the lower transparent substrate and respectively electrically connected to the plurality of electrodes; a common electrode disposed on a lower surface of the upper transparent substrate; and a non-polar and a polar liquid disposed in a space defined by the vertical barriers, wherein the dielectric layer consists in a first layer formed of a fluoropolymer and adjacent to the hydrophobic layer, a second layer formed of HfO 2, and a third layer formed of Mo and adjacent to the electrodes; and wherein a thickness of the first layer is about 300 Å, a thickness of the second layer is about 2000 Å, and a thickness of the third layer is about 2000 Å. a display panel comprising a plurality of pixels; and an electrowetting lens array including a plurality of electrowetting lens cells, each of the plurality of electrowetting lens cells having an electrically adjustable variable focal distance, wherein the plurality of electrowetting lens cells are 2-dimensionally arrayed; the display panel is configured to sequentially display at least two images having different depths; and the electrowetting lens array is configured to sequentially project the at least two images at at least two different focal distances corresponding to the depths of the at least two images, wherein each of the electrowetting lens cells comprises: a lower transparent substrate and an upper transparent substrate; vertical barriers extending from an upper surface of the lower transparent substrate, wherein the vertical barriers define a plurality of spaces therebetween; a plurality of electrodes (303a,303b) disposed on sidewalls of the vertical barriers; a dielectric layer which covers the plurality of electrodes; a hydrophobic layer disposed on a surface of the dielectric layer; a plurality of wiring lines (306a,306b) disposed on the upper surface of the lower transparent substrate and respectively electrically connected to the plurality of electrodes; a common electrode disposed on a lower surface of the upper transparent substrate; and a non-polar and a polar liquid disposed in a space defined by the vertical barriers, a lower transparent substrate and an upper transparent substrate; vertical barriers extending from an upper surface of the lower transparent substrate, wherein the vertical barriers define a plurality of spaces therebetween; a plurality of electrodes (303a,303b) disposed on sidewalls of the vertical barriers; a dielectric layer which covers the plurality of electrodes; a hydrophobic layer disposed on a surface of the dielectric layer; a plurality of wiring lines (306a,306b) disposed on the upper surface of the lower transparent substrate and respectively electrically connected to the plurality of electrodes; a common electrode disposed on a lower surface of the upper transparent substrate; and a non-polar and a polar liquid disposed in a space defined by the vertical barriers, wherein the dielectric layer consists in a first layer formed of a fluoropolymer and adjacent to the hydrophobic layer, a second layer formed of HfO 2, and a third layer formed of Mo and adjacent to the electrodes; and wherein a thickness of the first layer is about 300 Å, a thickness of the second layer is about 2000 Å, and a thickness of the third layer is about 2000 Å.