Patent attributes
A biological feature identification device includes a display device and a sensing device. The display device includes multiple pixels arranged along a first direction. The pixels each has a sub-pixel having a display element and a switch element. The sensing device includes multiple sensing units arranged along a second direction. The sensing units each has a sensing element. When the spatial frequency relation is |4*(RE/100)−(1/SU)|>A, the first and second directions are the same, and the biological feature identification device satisfy the criteria: A<|4*(RE/100)−(1/SU)|<B. When the spatial frequency relation is |4*(RE/100)−(1/SU)|≤A, the first and second directions form an angle, and the biological feature identification device satisfy the criteria: A<|4*(RE/100)−{1/[SU*Cos(α)]}|<C. RE is the resolution of the display device, SU is the sensing unit size, α is the angle, 0°<α<90°, B and C>A, and A is not equal to zero.
