Abstract: A pixel driving circuit includes: a driving transistor connected to a first node, a second node and a third node; a first light-emitting control unit connected to the second node; a second light-emitting control unit connected to the third node and a fourth node; a first reset unit connected to the fourth node, and configured to load a second power supply voltage to the fourth node in response to a scan signal. One end of the light-emitting element is connected to the fourth node, and the other end of the light-emitting element is used for loading the second power supply voltage.

Abstract: A method for locking a terminal home, which may ensure that in a preferential activity of the network operator, a gift, discounted or rented terminal may be used when it is limited in a designated area or network, so that “sales across regions” in the prior art may be prevented. According to the embodiments of the invention, network operator information and home information related to a terminal are preset. After the terminal starts up, whether the terminal is within the preset network of the network operator is determined, and whether the current home is the preset home is determined. The terminal may only be used normally in the preset network of the network operator and in a specific area.