| CPC G09G 3/3233 (2013.01) [G09G 2300/0426 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0861 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/041 (2013.01); G09G 2330/02 (2013.01)] | 18 Claims |
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1. A display panel, comprising:
a substrate, having a display region and a non-display region at least partially surrounding the display region;
a plurality of pixels, disposed in the display region, wherein the plurality of pixels are coupled to a drive circuit and configured to emit light based on a common supply voltage transmitted by the drive circuit;
a temperature sensing circuit, disposed in the non-display region, wherein the temperature sensing circuit is coupled to a first reference power supply terminal, a second reference power supply terminal and a first power supply terminal, and further coupled to the drive circuit, and the temperature sensing circuit is configured to transmit a target temperature sensing current to the drive circuit based on a temperature of the display region, under driving of a first reference power supply signal provided by the first reference power supply terminal, a second reference power supply signal provided by the second reference power supply terminal and a first power supply signal provided by the first power supply terminal; and
a trim circuit, disposed in the non-display region, wherein the trim circuit is coupled to the first reference power supply terminal, a plurality of trim control terminals and the first power supply terminal, and further coupled to the drive circuit, and the trim circuit is configured to transmit a target trim current to the drive circuit, under driving of a trim control signal provided by at least one of the trim control terminals, the first reference power supply signal and the first power supply signal;
wherein the target temperature sensing current and the target trim current are supplied to the drive circuit to compensate the common supply voltage;
the pixel comprises: a pixel circuit disposed in the display region and the non-display region, and a light-emitting element disposed in the display region;
the pixel circuit is coupled to a scan control terminal, a data signal terminal, a first light-emitting control terminal, a second light-emitting control terminal, a second power supply terminal, the first power supply terminal and a first electrode of the light-emitting element, and is configured to transmit a light-emitting drive signal to the first electrode of the light-emitting element based on a scan signal provided by the scan control terminal, a first light-emitting control signal provided by the first light-emitting control terminal, a second light-emitting control signal provided by the second light-emitting control terminal, a second power supply signal provided by the second power supply terminal and the first power supply signal;
a second electrode of the light-emitting element is coupled to a common power supply terminal, the common power supply terminal is configured to be coupled to the drive circuit and to receive a common power supply voltage provided by the drive circuit, and the light-emitting element is configured to emit light based on the common power supply voltage and the light-emitting drive signal;
the pixel circuit comprises: a light-emitting control sub-circuit disposed in the non-display region, and a data write sub-circuit, a storage sub-circuit and a drive sub-circuit disposed in the display region;
the light-emitting control sub-circuit is coupled to the first light-emitting control terminal, the second light-emitting control terminal, the first power supply terminal, the second power supply terminal and a first node, the light-emitting control sub-circuit is configured to control, in response to the first light-emitting control signal, on and off between the second power supply terminal and the first node, and is configured to control, in response to the second light-emitting control signal, on and off between the second power supply terminal and the first node;
the data write sub-circuit is coupled to the scan control terminal, the data signal terminal and a second node, and the data write sub-circuit is configured to, in response to the scan signal, control on and off between the data signal terminal and the second node;
the storage sub-circuit is coupled to the second node and the first power supply terminal, and is configured to store a potential of the second node based on the first power supply signal; and
the drive sub-circuit is coupled to the first node, the second node and the first electrode of the light-emitting element, and is configured to transmit the light-emitting drive signal to the light-emitting element based on a potential of the first node and the potential of the second node.
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