Touch sensor and information processing system

A touch sensor used in a touch sensor device that has a display function based on emitted light and a touch detection function, the touch sensor comprising:

• a substrate;
• a positive electrode pattern for display use, a negative electrode pattern for display use, a positive electrode pattern for detection use, and a negative electrode pattern for detection use that are disposed on an upper surface of the substrate;
• an EL layer laminated on the substrate on which the positive electrode pattern for display use, the negative electrode pattern for display use, the positive electrode pattern for detection use, and the negative electrode pattern for detection use are disposed;
• and
• a protective layer laminated on the EL layer, the protective layer transmitting at least part of light emitted from the EL layer;
• wherein the EL layer is shaped and disposed so as to form a character, a symbol, or a figure;
• the positive electrode pattern for display use and the negative electrode pattern for display use are separated from each other and are shaped and disposed so as to match a shape in which the EL layer emits light when a driving voltage is applied across the positive electrode pattern for display use and the negative electrode pattern for display use and to match a position of the shape where the shape is formed by combining the positive electrode pattern for display use, the negative electrode pattern for display use, and a portion between the positive electrode pattern for display use and the negative electrode pattern for display use;
• and the positive electrode pattern for detection use and the negative electrode pattern for detection use are disposed around a portion of the EL layer, the portion emitting light, when viewed from a direction orthogonal to the EL layer.