DISPLAY PANEL AND DETECTION METHOD THEREOF, AND DISPLAY DEVICE
First Claim
1. A display panel, comprising a sub-pixel and a detection circuit,wherein the sub-pixel comprises a pixel circuit and a light-emitting element, and the pixel circuit is connected to the light-emitting element and is configured to drive the light-emitting element to emit light;
- the detection circuit comprises a detection signal terminal and a control voltage terminal, a first electrode of the light-emitting element is connected to the detection signal terminal, and a second electrode of the light-emitting element is connected to the control voltage terminal; and
the detection circuit is configured to output a variable voltage, through the control voltage terminal, to the second electrode of the light-emitting element, the variable voltage comprises a first sub-voltage signal, and the detection circuit is further configured to detect an electrical parameter at the first electrode of the light-emitting element in a case where the first sub-voltage signal is applied to the second electrode of the light-emitting element.
1 Assignment
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Accused Products
Abstract
A display panel, a detection method thereof and a display device are provided. The display panel includes a sub-pixel and a detection circuit, the sub-pixel includes a pixel circuit and a light-emitting element, the pixel circuit is configured to drive the light-emitting element to emit light; the detection circuit includes a detection signal terminal and a control voltage terminal, a first electrode of the light-emitting element is connected to the detection signal terminal, and a second electrode of the light-emitting element is connected to the control voltage terminal; and the detection circuit is configured to output a variable voltage through the control voltage terminal, the variable voltage includes a first sub-voltage signal, and the detection circuit is further configured to detect an electrical parameter at the first electrode of the light-emitting element in a case where the first sub-voltage signal is applied to the second electrode of the light-emitting element.
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Citations
20 Claims
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1. A display panel, comprising a sub-pixel and a detection circuit,
wherein the sub-pixel comprises a pixel circuit and a light-emitting element, and the pixel circuit is connected to the light-emitting element and is configured to drive the light-emitting element to emit light; -
the detection circuit comprises a detection signal terminal and a control voltage terminal, a first electrode of the light-emitting element is connected to the detection signal terminal, and a second electrode of the light-emitting element is connected to the control voltage terminal; and the detection circuit is configured to output a variable voltage, through the control voltage terminal, to the second electrode of the light-emitting element, the variable voltage comprises a first sub-voltage signal, and the detection circuit is further configured to detect an electrical parameter at the first electrode of the light-emitting element in a case where the first sub-voltage signal is applied to the second electrode of the light-emitting element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15)
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14. A display panel, comprising a sub-pixel and a detection circuit,
wherein the sub-pixel comprises a pixel circuit and a light-emitting element, the pixel circuit comprises a drive transistor, a data writing transistor, and a storage capacitor, the detection circuit comprises a first sub-circuit and a second sub-circuit, and the first sub-circuit comprises a switch element; -
a first electrode of the drive transistor is electrically connected to a power supply, a second electrode of the drive transistor is electrically connected to a first electrode of the light-emitting element, a gate electrode of the drive transistor is electrically connected to a second electrode of the data writing transistor and a first terminal of the storage capacitor, a first electrode of the data writing transistor is configured to receive a display data voltage, a gate electrode of the data writing transistor is configured to receive a scan signal, and a second terminal of the storage capacitor is electrically connected to the power supply; a second electrode of the light-emitting element is configured to receive a variable voltage, and the variable voltage comprises a first sub-voltage signal; an input terminal of the switch element is connected to the first electrode of the light-emitting element, an output terminal of the switch element is connected to the second sub-circuit, a control terminal of the switch element is configured to receive the variable voltage, and the switch element is turned on in a case where the first sub-voltage signal is applied to the control terminal of the switch element; and the second sub-circuit is configured to detect an electrical parameter at the first electrode of the light-emitting element in a case where the first sub-voltage signal is applied to the second electrode of the light-emitting element.
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16. A detection method applied to a display panel, wherein the display panel comprises a sub-pixel and a detection circuit,
the sub-pixel comprises a pixel circuit and a light-emitting element, and the pixel circuit is connected to the light-emitting element and is configured to drive the light-emitting element to emit light; -
the detection circuit comprises a detection signal terminal and a control voltage terminal, a first electrode of the light-emitting element is connected to the detection signal terminal, and a second electrode of the light-emitting element is connected to the control voltage terminal; and the detection circuit is configured to output a variable voltage, through the control voltage terminal, to the second electrode of the light-emitting element, the variable voltage comprises a first sub-voltage signal, and the detection circuit is further configured to detect an electrical parameter at the first electrode of the light-emitting element in a case where the first sub-voltage signal is applied to the second electrode of the light-emitting element, the detection method comprises; controlling a state of the light-emitting element by the first sub-voltage signal of the variable voltage and detecting a plurality of electrical parameters of the first electrode of the light-emitting element. - View Dependent Claims (17, 18, 19, 20)
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Specification