Display apparatus and electronic device

An electronic device, comprising:

• a base substrate including a non-display area adjacent to a display area;
• a driving integrated circuit (IC) on the base substrate;
• and
• an anisotropic conductive film between the base substrate and the driving IC and attaching the driving IC to the base substrate, wherein:
• the driving IC includes an input to receive an external signal and an output to apply a signal to the base substrate,
• the anisotropic conductive film includes a first conductive ball group between the output and the base substrate, and includes a second conductive ball group,
• the first conductive ball group includes at least a first row and a second row of conductive balls, the conductive balls of the second row having diameters that are larger than diameters of the conductive balls of the first row,
• the second conductive ball group includes at least a third row and a fourth row of conductive balls, the third row being closer to the display area than the fourth row, the conductive balls of the fourth row having diameters that are larger than diameters of the conductive balls of the third row, and
• the input of the driving IC includes input bumps contacting conductive balls of the third and fourth rows of the second conductive ball group, and the output of the driving IC includes output bumps contacting conductive balls of the first and second rows of the first conductive ball group.

A display apparatus, comprising:

• a display substrate including a non-display area adjacent to a display area;
• a driving integrated circuit (IC);
• and
• an anisotropic conductive film between the display substrate and the driving IC, the anisotropic conductive film attaching the driving IC to the display substrate, wherein:
• the anisotropic conductive film includes a first conductive ball group and a second conductive ball group, the second conductive ball group being farther away from the display area than the first conductive ball group,
• the first conductive ball group includes at least a first row and a second row of conductive balls, the conductive balls of the second row having volumes that are larger than volumes of the conductive balls of the first row,
• the second conductive ball group includes at least a third row and a fourth row of conductive balls, the conductive balls of the fourth row having volumes that are larger than volumes of the conductive balls of the third row, and
• the driving IC includes first bumps contacting conductive balls of the third and fourth rows of the second conductive ball group, and second bumps contacting conductive balls of the first and second rows of the first conductive ball group,
• wherein the conductive balls of the second conductive ball group are regularly arranged having volumes that gradually decrease toward the display area.