US 2022/0277696 A1 · DISPLAY PANEL AND METHOD FOR DRIVING THE SAME, AND DISPLAY DEVICE

Abstract

A display panel and a method for driving the same, and a display device are provided. The display panel includes a light emitting element and a pixel circuit that includes a data writing module configured to provide a data signal and an adjusting voltage, a driving module configured to provide a driving current to the light emitting element and including a driving transistor, and a compensation module configured to compensate a threshold voltage of the driving transistor. An operation process of the display panel includes a period of a data writing frame during which the pixel circuit executes a data writing phase during which the data writing module writes the data signal and a light emitting phase, and a period of a holding frame during which the pixel circuit executes a reset and adjustment phase during which the data writing module writes the adjusting voltage and the light emitting phase.

Claims20

Dependent claims

A display panel, comprising:

at least one pixel circuit, a pixel circuit of the at least one pixel circuit comprising a driving transistor and a third transistor;
and
a light emitting element,
wherein the driving transistor is configured to provide a driving current to the light emitting element;
wherein the third transistor is configured to provide an adjusting voltage to the driving transistor, and wherein the third transistor comprises a first terminal connected to a voltage adjusting signal input terminal, a second terminal connected to the driving transistor, and a gate connected to a third control signal terminal;
and
wherein the adjusting voltage provided by the third transistor to the driving transistor is configured to adjust a bias state of the driving transistor.

4 more elements

A method for driving a display panel, wherein the display panel comprises a light emitting element and a pixel circuit comprising a driving transistor and a third transistor, wherein the driving transistor is configured to provide a driving current to the light emitting element;

the third transistor is configured to provide an adjusting voltage to the driving transistor and the third transistor comprises a first terminal connected to a voltage adjusting signal input terminal, a second terminal connected to the driving transistor, and a gate connected to a third control signal terminal;
the adjusting voltage provided by the third transistor to the driving transistor is configured to adjust a bias state of the driving transistor;
wherein an operation process of the display panel comprises a reset and adjustment phase;
and
wherein the method comprises:
during the reset and adjustment phase, controlling the third transistor to turn on with a signal of the third control signal terminal, and providing, by the third transistor, the adjusting voltage to the driving transistor.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/567,487Filed 3 Jan 2022

Priority

CN 202110226111.41 Mar 2021

Published

1 Sep 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

G09G 3/3233
Using an active matrix: with pixel circuitry controlling the current through the light-emitting element
G09G 3/3291
Details of drivers for data electrodes: in which the data driver supplies a variable data voltage for setting the current through, or the voltage…
G09G 2300/08
Aspects of the constitution of display devices: active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal…
G09G 2300/0819
Several active elements per pixel in active matrix panels: used for counteracting undesired variations, e.g. feedback or autozeroing

Display panel and method for driving the same, and display device

Life of this patent

Display panel and method for driving the same, and display device

Life of this patent

Abstract

Claims20