Patent ID: 8878804

Claim:
An electronic device including an operation area and a non-operation area positioned outside the operation area, the electronic device comprising: an operation unit including a first principal surface and a second principal surface positioned opposite to the first principal surface, wherein the first principal surface is an initial incident ambient light surface; a light shielding film formed on the first principal surface of the operation unit corresponding to the non-operation area; and a vibrator provided on the second principal surface of the operation unit corresponding to the non-operation area, wherein when a critical angle at which light is totally reflected by the second principal surface of the operation unit is represented by θ and sum of a thickness T 1 of the operation unit and a thickness T 2 of the vibrator is represented by T, the entire vibrator is provided, on the second principal surface of the operation unit corresponding to the non-operation area, at a position apart by T×tan δ or more from an end of the light shielding film which end is positioned on the operation area side, in sectional view.