Apparatus integrated with fingerprint recognition and touch detection, and method of controlling the same

An apparatus integrated with fingerprint recognition and touch detection, comprising:

• a touchpad having a touch area for recognizing a touch event and a fingerprint area for recognizing a fingerprint and the touch event;
• a plurality of transmit (TX) lines of a first group and a plurality of TX lines of a second group;
• a plurality of receive (RX) lines of a first group and a plurality of RX lines of a second group, wherein each of the RX lines of the first group and each of the RX lines of the second group cross the TX lines of the first group and the TX lines of the second group;
• and
• a controller integrated circuit (IC) connected to each of the TX lines of the first group, the TX lines of the second group, the RX lines of the first group, and the RX lines of the second group;
• wherein each of the TX lines of the first group and the RX lines of the first group extends as a single line without interruption from the touch area;
• enters into, traverses, and exits the fingerprint area;
• and extends along another portion of the touch area;
• wherein when the apparatus is operated in a fingerprint sensing mode, the controller IC supplies a driving signal to all of the TX lines of the first group, and
• wherein when the apparatus is operated in a touch sensing mode, the controller IC supplies the driving signal to all of the TX lines of the second group and only a portion of the TX lines of the first group that are not all of the TX lines of the first group, and then the controller IC senses touch input based on a change in charges received from all of the RX lines of the second group and only a portion of the RX lines of the first group that are not all of the RX lines of the first group, thereby recognizing a touch position on the touchpad;
• wherein a density arrangement pattern and a pitch of the portion of the TX lines of the first group are identical to a density arrangement pattern and a pitch of the TX lines of the second group, said portion of the TX lines of the first group being that used when the apparatus is operated in the touch sensing mode.