Patent ID: 8531391
Filing Date: 2013-09-10
Classification: C09K,G06F

Abstract:
1. An input device comprising: an upper sheet having a resistive film formed on a lower surface thereof; a lower substrate disposed in a co-planar relationship below the upper sheet and spaced apart from the upper sheet by a gap, the lower substrate having a resistive film formed on an upper surface thereof; the lower substrate having opposite first and second side edge portions disposed along a longitudinal axis of the lower substrate, the first and second side edge portions having an incline or taper along a thickness axis of the lower substrate; the lower substrate having opposite third and fourth side edge portions in an orthogonal direction to the longitudinal axis, the third side portion having an incline or taper along the thickness axis of the lower substrate, the fourth side portion having a surface parallel to the thickness axis of the lower substrate; a pair of lower electrodes formed on the resistive film of the lower substrate, and disposed parallel to the first and second side edge portions of the lower substrate, the lower substrate having a constant thickness between the pair of lower electrodes; wherein the lower substrate is formed by an injection molding process; and wherein when pressure is applied to an operation portion of the upper sheet, the upper sheet flexes toward the lower substrate, and planar coordinates of the operation portion are determined based on a voltage between the pair of lower electrodes.