Pixel structure, driving method therefor and preparation method therefor, and display apparatus

A method of manufacturing a pixel structure, comprising:

• forming a plurality of sub-pixel groups arranged in an array,
• wherein each sub-pixel group of the plurality of sub-pixel groups comprises a first sub-pixel electrode, a second sub-pixel electrode, a first-type carbon nanotube switch tube, and a second-type carbon nanotube switch tube,
• the first sub-pixel electrode is connected to the first-type carbon nanotube switch tube, the second sub-pixel electrode is connected to the second-type carbon nanotube switch tube, the first-type carbon nanotube switch tube and the second-type carbon nanotube switch tube in each sub-pixel group are connected to a same gate line and a same data line,
• an active layer of the first-type carbon nanotube switch tube and an active layer of the second-type carbon nanotube switch tube are simultaneously formed by a same process;
• and
• source-drain electrodes of the first-type carbon nanotube switch tube and source-drain electrodes of the second-type carbon nanotube switch tube are respectively formed of different materials;
• wherein the first-type carbon nanotube switch tube is an N-type carbon nanotube switch tube, and the second-type carbon nanotube switch tube is a P-type carbon nanotube switch tube;
• or
• the first-type carbon nanotube switch tube is a P-type carbon nanotube switch tube, and the second-type carbon nanotube switch tube is an N-type carbon nanotube switch tube;
• a source electrode and a drain electrode of the N-type carbon nanotube switch tube is formed of undoped copper or aluminum, and a source electrode and a drain electrode of the P-type carbon nanotube switch tube is formed of undoped lead.

A method of driving a pixel structure, wherein the pixel structure comprises a plurality of sub-pixel groups arranged in an array, each sub-pixel group of the plurality of sub-pixel groups comprises a first sub-pixel electrode, a second sub-pixel electrode, a first-type carbon nanotube switch tube, and a second-type carbon nanotube switch tube, the first sub-pixel electrode is connected to the first-type carbon nanotube switch tube, the second sub-pixel electrode is connected to the second-type carbon nanotube switch tube, and the first-type carbon nanotube switch tube and the second-type carbon nanotube switch tube in each sub-pixel group are connected to a same gate line and a same data line, an active layer of the first-type carbon nanotube switch tube and an active layer of the second-type carbon nanotube switch tube are formed simultaneously by a same process;

• a material for forming source-drain electrodes of the first-type carbon nanotube switch tube and a material for forming source-drain electrodes of the second-type carbon nanotube switch tube are different,
• wherein the first-type carbon nanotube switch tube is an N-type carbon nanotube switch tube, and the second-type carbon nanotube switch tube is a P-type carbon nanotube switch tube;
• or
• the first-type carbon nanotube switch tube is a P-type carbon nanotube switch tube, and the second-type carbon nanotube switch tube is an N-type carbon nanotube switch tube;
• a material of a source electrode and a drain electrode of the N-type carbon nanotube switch tube is undoped copper or aluminum, and a material of a source electrode and a drain electrode of the P-type carbon nanotube switch tube is undoped lead;
• and driving of each sub-pixel group comprises a positive driving phase and a negative driving phase;
• the driving method comprises:
• in the positive driving phase, inputting a first scan voltage to the first-type carbon nanotube switch tube of each sub-pixel group through a gate line, so as to turn on the first-type carbon nanotube switch tube;
• inputting a first data voltage to the first-type carbon nanotube switch tube through a data line, the first-type carbon nanotube switch tube driving the first sub-pixel electrode to display;
• in the negative driving phase, inputting a second scan voltage to the second-type carbon nanotube switch tube of each sub-pixel group through the gate line, so as to turn on the second-type carbon nanotube switch tube;
• inputting a second data voltage to the second-type carbon nanotube switch tube through the data line, the second-type carbon nanotube switch tube driving the second sub-pixel electrode to display,
• wherein a polarity of the first data voltage and a polarity of the second data voltage are opposite.