OLED display panel and driving method using differential data for voltage compensation

An OLED display panel, comprising:

• a sensing unit configured to acquire voltage data of an OLED of the display panel or voltage data of a driving thin-film transistor of a sub-pixel of the display panel;
• a first data converter configured to encode the voltage data into parallel transmission data according to a preset encoding rule, the number of data bits of the transmission data being greater than that of the voltage data;
• a second data converter configured to convert the transmission data into serial relay data;
• a transmitter configured to convert the relay data into differential data and send the differential data to a timing controller;
• the timing controller configured to receive the differential data and extract clock information from the differential data, and perform voltage compensation on a sub-pixel or an OLED according to the differential data;
• a receiver configured to receive the differential data and convert the differential data into the relay data;
• a clock data restorer configured to acquire the clock information from the relay data;
• a third data converter configured to convert the relay data into the transmission data according to the clock information;
• and
• a fourth data converter configured to decode the transmission data into the voltage data according to the preset encoding rule, the number of data bits of the transmission data being greater than that of the voltage data;
• wherein
• the timing controller is further configured to receive the voltage data and perform voltage compensation on the sub-pixel or the OLED according to the voltage data;
• wherein
• the sensing unit comprises a plurality of sensing units which are connected in a cascaded manner;
• the first data converter, the second data converter, and the transmitter are integrated in the sensing unit.