PURPOSE: To eliminate operation inferiority by absorbing the touch with a finger by space by a method wherein a resin solution is dropped on the inside area of an endless weir to be built up by the surface tension of the resin solution so as to become higher than the weir and subsequently cured.

CONSTITUTION: After the flat printing of a character, a figure or a local hue is applied to a synthetic resin sheet 2, an endless circular or rectangular weir 3 is formed on the sheet by screen printing. Next, an ultraviolet curable resin solution or a thermosetting resin solution 4 is dropped on the inside area of the weir 3 from a nozzle and built up by utilizing the surface tension of the resin solution so as to become higher than the weir 3 and subsequently irradiated with ultraviolet rays to be cured. Further, the weir 3 can be also formed by the plastic deformation of the sheet 2. The expansion of the sheet is formed by the filling with a resin to show a solid state and the touch with a finger can be faithfully transmitted to the rear of the sheet 2. Therefore, the touch with a finger is absorbed by space to generate no operation inferiority.