Curved or spherical touch device

A spherical touch device, comprising:

• a spherical casing being a hollow structure, comprising an inner surface and an outer surface on opposite sides of the spherical casing;
• and
• at least one touch sensing layer configured to attach to the inner surface of the spherical casing,
• wherein the touch sensing layer comprises a core portion and a touch portion, the touch portion is formed by the core portion extending apart towards a direction away from the core portion, and the touch portion comprises a plurality of sub-touch portions, an area of each of the plurality of sub-touch portions is greater than an area of the core portion;
• wherein the spherical casing comprises an upper hemisphere and a lower hemisphere;
• the upper hemisphere and the lower hemisphere are identical in structure and symmetrically distributed;
• and the upper hemisphere and the lower hemisphere are combined together to form the spherical casing;
• and
• wherein the core portion covers at least a portion of a boundary line between the upper hemisphere and the lower hemisphere, half of the sub-touch portions of the touch portion are located on an area of the inner surface corresponding to the upper hemisphere, and an other half of the sub-touch portions of the touch portion are located on an area of the inner surface corresponding to the lower hemisphere.