A stereoscopic image display apparatus having a touch sensing capability, comprising: a first substrate (110, 310) opposite a second substrate (120, 320); a plurality of electrode patterns in the second substrate, each of the electrode patterns extending along a first direction; a plurality of electrically conductive barrier patterns in the second substrate, the plurality of barrier patterns being insulated from the electrode patterns and each of the barrier patterns extending along a second direction crossing the first direction; and a plurality of pixels, the first and second substrates with the pixels defining a display panel (150, 350), and each pixel including: a gate line (GL1 - GL3) extending along a third direction, a data line (DL1 - DL3) extending along a fourth direction, and a pixel electrode (PE1 - PE6) electrically connected to the gate line and the data line, the pixel electrodes of the plurality of pixels being configured to generate an electric field with facing electrode patterns of the plurality of electrode patterns while displaying an image, wherein the barrier patterns are configured to allow each eye of a viewer located at the second substrate side to see a different group of pixels, and wherein an electric field is arranged to be applied between the electrode patterns and the barrier patterns, wherein disturbance of the electric field resulting from an external touch is used for the detection of the external touch; wherein each pixel of the plurality of pixels further comprises a storage line (SL1 - SL3) spaced apart from the gate line or the data line and parallel thereto. a first substrate (110, 310) opposite a second substrate (120, 320); a plurality of electrode patterns in the second substrate, each of the electrode patterns extending along a first direction; a plurality of electrically conductive barrier patterns in the second substrate, the plurality of barrier patterns being insulated from the electrode patterns and each of the barrier patterns extending along a second direction crossing the first direction; and a plurality of pixels, the first and second substrates with the pixels defining a display panel (150, 350), and each pixel including: a gate line (GL1 - GL3) extending along a third direction, a data line (DL1 - DL3) extending along a fourth direction, and a pixel electrode (PE1 - PE6) electrically connected to the gate line and the data line, the pixel electrodes of the plurality of pixels being configured to generate an electric field with facing electrode patterns of the plurality of electrode patterns while displaying an image, wherein the barrier patterns are configured to allow each eye of a viewer located at the second substrate side to see a different group of pixels, and wherein an electric field is arranged to be applied between the electrode patterns and the barrier patterns, wherein disturbance of the electric field resulting from an external touch is used for the detection of the external touch; wherein each pixel of the plurality of pixels further comprises a storage line (SL1 - SL3) spaced apart from the gate line or the data line and parallel thereto. a gate line (GL1 - GL3) extending along a third direction, a data line (DL1 - DL3) extending along a fourth direction, and a pixel electrode (PE1 - PE6) electrically connected to the gate line and the data line, the pixel electrodes of the plurality of pixels being configured to generate an electric field with facing electrode patterns of the plurality of electrode patterns while displaying an image, wherein the barrier patterns are configured to allow each eye of a viewer located at the second substrate side to see a different group of pixels, and wherein an electric field is arranged to be applied between the electrode patterns and the barrier patterns, wherein disturbance of the electric field resulting from an external touch is used for the detection of the external touch; wherein each pixel of the plurality of pixels further comprises a storage line (SL1 - SL3) spaced apart from the gate line or the data line and parallel thereto.