Display apparatus having grooved terminals and method of manufacturing the same

A display apparatus comprising:

• a display panel comprising a display substrate;
• a plurality of pad terminals disposed on the display substrate;
• and
• a driving unit comprising a plurality of driving terminals electrically connected to the plurality of pad terminals,
• wherein each of the plurality of driving terminals comprises a stepped groove partially penetrates each of the plurality of driving terminals or an opening hole fully penetrates each of the plurality of driving terminals.

A display apparatus, comprising:

• a display panel comprising a display substrate on which a plurality of pad terminals are disposed;
• a thin film encapsulation (TFE) layer disposed on the display substrate;
• and
• a driving unit comprising a plurality of driving terminals electrically connected to the plurality of pad terminals,
• wherein a first stepped groove partially penetrates each of the plurality of pad terminals or a first opening hole fully penetrates each of the plurality of pad terminals, and
• wherein each of the plurality of driving terminals comprises a second stepped groove partially penetrating each of the plurality of driving terminals or a second opening hole fully penetrating each of the plurality of driving terminals.

A method of manufacturing a display apparatus, comprising:

• forming a stepped groove partially penetrating a pad terminal, forming a stepped groove partially penetrating a driving terminal, forming an opening hole fully penetrating the pad terminal, or forming an opening hole fully penetrating the driving terminal;
• contacting the pad terminal and the driving terminal each other;
• applying pressure to the pad terminal or the driving terminal to squeeze the pad terminal and the driving terminal together, and inserting part of the pad terminal and part of the driving terminal into the stepped groove or the opening hole formed in the pad terminal or the driving terminal;
• vibrating the pad terminal and the driving terminal;
• connecting the pad terminal and the driving terminal using ultrasound bonding, while the pad terminal and the driving terminal are being vibrated;
• and
• forming a connection portion that electrically connects the pad terminal and the driving terminal.

An electronic device including a display apparatus, the display apparatus comprising:

• a display panel including at least one pad terminal disposed thereon;
• a display driver including at least one driving terminal disposed thereon, the driving terminal being connected to the pad terminal;
• a first cutout in the pad terminal or a second cutout in the driving terminal;
• and
• a connection portion disposed between the pad terminal and the driving terminal, the connection portion including a mixing of a first material from the pad terminal and a second material from the driving terminal.