Sensing device and electronic device

An electronic device, comprising:

• a display panel having a display side;
• and
• a sensing device attached to a side of the display panel opposite to the display side, the sensing device comprising:
• a driving substrate, comprising a first substrate and a plurality of driving circuits disposed on the first substrate, each of the plurality of driving circuits comprising a plurality of thin-film transistors, wherein a material of the first substrate comprises glass or polyimide;
• a sensing module bonded to the driving substrate, the sensing module comprising a second substrate, a plurality of sensing elements and a passivation layer disposed on the second substrate, wherein the second substrate is an epitaxial substrate;
• and
• a plurality of bonding pads, wherein the sensing module is bonded to the driving substrate through the plurality of bonding pads;
• wherein each bonding pad of the plurality of bonding pads has a first width, the first electrode has a second width, and the second electrode has a third width, and the first width is greater than or equal to the second width, and the first width is greater than or equal to the third width,
• wherein each of the plurality of driving circuits is electrically connected to at least one of the plurality of sensing elements,
• wherein the plurality of sensing elements are closer to the display panel than the plurality of driving circuits,
• wherein the display panel comprises a display layer and a light source, and the display layer and the light source do not overlap in a normal direction of the display layer,
• wherein a wavelength of light penetrating the first substrate is greater than or equal to 4 μm and less than or equal to 10 μm,
• wherein the second electrode has a first portion disposed on a surface of the passivation layer and a second portion disposed in a through-hole of the passivation layer, and both the first portion and the second portion have a rounded corner.