Patent ID: 8885178

Claim:
A position detecting sensor configured to be superposed on a display surface of a display device including plural pixels disposed in a first direction and in a second direction perpendicular to the first direction, the pixel having long edges and short edges, the long edges extending in the first direction and the short edges extending in the second direction, the position detecting sensor being configured to detect a position indicated thereon by an indication body and comprising: (a) a grid structure composed of plural electrodes extending in the first direction and each having light permeability, and of plural electrodes extending in the second direction and each having light permeability, wherein a rectangular area is formed by four cross-points at which two immediately adjacent electrodes extending in the first direction and two immediately adjacent electrodes extending in the second direction intersect with each other; and (b) a dummy pattern having light permeability disposed in the rectangular area proximate to the electrodes, so as to provide uniform optical characteristics for the position detecting sensor, the dummy pattern being disposed to electrically float; wherein at least some of the plural electrodes extending in the first direction are shaped to have a set of positive and negative inclinations with respect to the first direction arranged in a series along the first direction, the set being repeated at least twice between two immediately adjacent cross-points along the first direction, to reduce a Moire effect between the plural pixels disposed in the first direction and the plural electrodes extending in the first direction; and wherein at least some of the plural electrodes extending in the first direction are each shaped to be line-symmetric about a straight line extending in the first direction.