Data driving integrated circuit, display apparatus, and pixel compensation method

A display apparatus, comprising:

• a data driving integrated circuit;
• a plurality of data lines respectively coupled to the data driving integrated circuit;
• a plurality of sensing line respectively coupled to the data driving integrated circuit;
• wherein a respective sensing line of the plurality of sensing line is coupled to a plurality of columns of pixel driving circuits;
• and
• at least two subpixels in a same row are connected to a same sensing line;
• wherein the data driving integrated circuit comprises:
• a digital-to-analog converter configured to receive a respective digital data signal from a timing controller and convert the respective digital data signal to a respective analog data signal, which is output to a display panel through a respective data line;
• an analog-to-digital converter configured to receive a respective analog sensing signal from a respective sensing line in the display panel and convert respective analog sensing signal to a respective digital sensing signal, which is output to the timing controller;
• a first sensing switch configured to control a connection between a first reference voltage line and the respective sensing line;
• a second sensing switch configured to control a connection between a second reference voltage line and the respective sensing line;
• and
• a third sensing switch configured to control the connection between the analog-to-digital converter and the respective sensing line.

A pixel compensation method, comprising:

• in a sensing voltage write-in stage,
• providing a turning-on voltage signal to a respective first gate line to turn on a switching transistor in a respective pixel driving circuit;
• providing a turning-on voltage signal to a respective second gate line to turn on a sensing transistor in the respective pixel driving circuit;
• controlling a first sensing switch of a data driving integrated circuit in a conductive state to electrically connect a first reference voltage line to a respective sensing line while maintaining a second sensing switch and a third sensing switch of the data driving integrated circuit in a non-conductive state;
• providing a first reference voltage signal to the respective sensing line through the first reference voltage line;
• and
• providing a sensing voltage signal to a first electrode of the switching transistor through a respective data line, the sensing voltage signal passing through the switching transistor to a first node coupled to a gate electrode of a driving transistor, a drain electrode of the switching transistor, and a first capacitor electrode of a storage capacitor.