Demultiplexer and method of controlling the same, and display device

A demultiplexer, comprising:

• a voltage boost circuit, wherein the voltage boost circuit is coupled to N second-stage selection signal input terminals and N first-stage selection signal input terminals, the N second-stage selection signal input terminals are in one-to-one correspondence with the N first-stage selection signal input terminals, and the voltage boost circuit is configured to successively boost voltages input via the N second-stage selection signal input terminals and output boosted voltages to corresponding first-stage selection signal input terminals, wherein N is greater than or equal to 2, and N is a positive integer;
• and
• at least one data selection output circuit, wherein each data selection output circuit is coupled to a data input terminal, N data output terminals and the N first-stage selection signal input terminals, and the data selection output circuit is configured to successively output data signals from the data input terminal to the N data output terminals under control of the N first-stage selection signal input terminals;
• wherein the voltage boost circuit includes N voltage boost sub-circuits, each voltage boost sub-circuit is coupled to a corresponding first-stage selection signal input terminal and a corresponding second-stage selection signal input terminal, and
• a (K−1)th voltage boost sub-circuit is further configured to reset a voltage on a (K−1)th first-stage selection signal input terminal when a Kth voltage boost sub-circuit boosts a voltage input via a Kth second-stage selection signal input terminal, K is greater than or equal to 2 and is less than or equal to N, and K is a positive integer;
• and
• each voltage boost sub-circuit includes:
• a coupling capacitor, wherein a first electrode of the coupling capacitor is coupled to a corresponding second-stage selection signal input terminal, a second electrode of the coupling capacitor is coupled to an auxiliary signal input terminal and a corresponding first-stage selection signal input terminal, and the coupling capacitor is configured to add a voltage input via the second-stage selection signal input terminal to a voltage input via the auxiliary signal input terminal and output an added voltage to the first-stage selection signal input terminal;
• a reset module, wherein the reset module is coupled to the first-stage selection signal input terminal, a control signal input terminal and a first voltage terminal, and the reset module is configured to transmit a voltage signal input via the first voltage terminal to the first-stage selection signal input terminal under control of a voltage input via the control signal input terminal, so as to reset a voltage on the first-stage selection signal input terminal;
• and
• an input module, wherein the input module includes a second thin film transistor, a control electrode and a first electrode of the second thin film transistor are coupled to the auxiliary signal input terminal, and a second electrode of the second thin film transistor is coupled to the second electrode of the coupling capacitor, and the input module is configured to transmit the voltage input via the auxiliary signal input terminal to the second electrode of the coupling capacitor.