US 11,961,482 B2 · Pixel circuit having a reset sub-circuit for resetting a plurality of sub-pixels and driving method thereof

multiple sets of pixel sub-circuits, arranged in a display area, each set of the pixel sub-circuits comprising at least two sub-pixel drive sub-circuits, and each of the sub-pixel drive sub-circuits comprising:

an input component, wherein a first input of the input component is configured to receive a data voltage signal, and a second input of the input component is configured to receive a first scan signal;

a compensation component, wherein a first input of the compensation component is in connection with an output of the input component, and a second input of the compensation component is configured to receive a second scan signal;

a drive component, wherein a first input of the drive component is in connection with an output of the compensation component, and a second input of the drive component is in connection with the output of the input component;

a first light-emitting control component, wherein a first input of the first light-emitting control component is configured to receive a power supply signal, and a second input of the first light-emitting control component is configured to receive a first control signal;

and

a first light-emitting element, wherein a first input of the first light-emitting element is in connection with the output of the drive component;

and

a first reset sub-circuit, arranged in a non-display area, where a first input of the first reset sub-circuit is configured to receive an initial voltage signal, and a second input of the first reset sub-circuit is configured to receive a third scan signal;

wherein the output of the drive component in each of the at least two sub-pixel drive sub-circuits is coupled to an output of the first reset sub-circuit, the compensation component is configured to compensate a threshold voltage of the drive component, the first light-emitting control component is configured to drive the first light-emitting element to emit light during a light-emitting phase, and the first reset sub-circuit is configured to reset a voltage received in the first light-emitting element to an initial voltage during a reset phase,

wherein the sub-pixel drive sub-circuit further comprises a second light-emitting control component, a first input of the second light-emitting control component is in connection to the output of the drive component, a second input of the second light-emitting control component is configured to receive a first control signal, and an output of the second light-emitting control component is in connection with the first input of the first light-emitting element,

wherein the pixel sub-circuit comprises two of the sub-pixel drive sub-circuits, one of the two sub-pixel drive sub-circuits further comprises:

a third light-emitting control component, wherein a first input of the third light-emitting control component is in connection with the output of the drive component, and a second input of the third light-emitting control component is configured to receive a second control signal;

and

a second light-emitting element, an input of the second light-emitting element is in connection with an output of the third light-emitting control component, and

wherein the third light-emitting control component is configured to drive the second light-emitting element to emit light during the light-emitting phase, and the first reset sub-circuit is configured to reset voltages received in the first light-emitting element and the second light-emitting element to the initial voltage during the reset phase, and

the pixel drive method comprising:

in the reset phase, the first scan signal is at a high-level, the data voltage signal is received in the input component, the second scan signal is at a low-level, the compensation component is switched off, the first control signal and the second control signal are at a low-level, the power supply signal is not received in the first light-emitting control component, the second light-emitting control component and the third light-emitting control component, the third scan signal is at a high-level, the first reset sub-circuit is switched on, the initial voltage signal is received and transmitted to the first light-emitting element and the second light-emitting element;

in a threshold-voltage compensation phase, the first scan signal is at a high-level, the data voltage signal is received in the input component, the second scan signal is at a high-level, the compensation component is switched on, the first control signal and the second control signal are at a low-level, the power supply signal is not received in the first light-emitting control component, the second light-emitting control component and the third light-emitting control component, the third scan signal is at a low-level, the first reset sub-circuit is switched off;

in a data-voltage writing phase, the first scan signal is at a high-level, the data voltage signal is received in the input component, the second scan signal is at a low-level, the compensation component is switched off, the first control signal and the second control signal are at a low-level, the power supply signal is not received in the first light-emitting control component, the second light-emitting control component and the third light-emitting control component, the third scan signal is at a low-level, the first reset sub-circuit is switched off;

in a first light-emitting phase, the first scan signal is at a low-level, the data voltage signal is not received in the input component, the second scan signal is at a high-level, the compensation component is switched on, the third scan signal is at a low-level, the first reset sub-circuit is switched off, the first control signal is at a high-level, the power supply signal is received in the first light-emitting control component and the second light-emitting control component and transmitted to the first light-emitting element, the first light-emitting element is driven to emit light, the second control signal is at a low-level and the power supply signal is not received in the third light-emitting control component;

and

in a second light-emitting phase, the first scan signal is at a low-level, the data voltage signal is not received in the input component, the second scan signal is at a high-level, the compensation component is switched on, the third scan signal is at a low-level, the first reset sub-circuit is switched off, the first control signal of the first light-emitting control component is at a high-level, the first control signal of the second light-emitting control component is at a low-level, and the power supply signal is not received in the second light-emitting control component, the second control signal of the third light-emitting control component is at a high-level, the power supply signal is received in the third light-emitting control component and transmitted to the second light-emitting element, and the second light-emitting element is driven to emit light.

Pixel circuit having a reset sub-circuit for resetting a plurality of sub-pixels and driving method thereof

Life of this patent

Pixel circuit having a reset sub-circuit for resetting a plurality of sub-pixels and driving method thereof

Life of this patent

Abstract

Claims13