Importance

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Abstract

To provide a fingertip tactile-sense input device in an input device having a plurality of keys within an extremely small range such as within a range of person's fingertip movement, which while being made extremely small and thin, enables key input while maintaining a sufficient click feeling, and also which is excellent for mass production. A base plate (50) has one dome spring (51) arranged at an approximate center of a side of a hole space, and a contact structure (52) on an inside of the dome spring (51). A surface sheet (20) is fixed to a flange (11) so that in a free state, this becomes approximately the same level as an other face of a frame (10), and is provided with a plurality of surface protrusions (21) deployed within a range in which the person's fingertip moves, and has flexibility, elasticity, and pliability. A digitizer (30) is arranged on the hole space side of the surface sheet (20), so as to be slidable on the surface sheet (20), and is capable of electrically measuring a position where a force applied to the surface sheet (20) is the strongest. A convex part (41) is provided on an actuator (40), and the actuator (40) is fixed to the digitizer (30), and has rigidity.

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First Claim