Abstract: A display device includes a light-emitting device disposed on a substrate and including an emission layer, and a light controller disposed on the light-emitting device. The light controller includes a plurality of main light blocking patterns extending in a first direction and spaced apart from each other in a second direction intersecting the first direction, and a plurality of sub-light blocking patterns disposed between adjacent ones of the plurality of main light blocking patterns, extending in the first direction, and spaced apart from each other in the second direction. Each of the plurality of main light blocking patterns has a first thickness in a thickness direction of the substrate, and each of the plurality of sub-light blocking patterns has a second thickness that is less than the first thickness in the thickness direction of the substrate.

Abstract: A system and method for measuring a location are provided. The system for measuring a location comprises a receiving device comprising a directional antenna the receiving device being configured to receive a signal from a mobile device in a path at a signal sensing direction side of the directional antenna, and a server configured to receive from the receiving device, information on the signal, determine a location of the mobile device based on the information on the signal, and determine a degree of congestion of the path using the location.

Abstract: A system and method for measuring a location are provided. The system for measuring a location comprises a receiving device comprising a directional antennam the receiving device being configured to receive a signal from a mobile device in a path at a signal sensing direction side of the directional antenna, and a server configured to receive from the receiving device, information on the signal, determine a location of the mobile device based on the information on the signal, and determine a degree of congestion of the path using the location.