US-12626661-B2 - Display panel, driving method thereof, and display device

Abstract

A display panel includes a display driving chip and a pixel circuit. The display driving chip is configured to provide a source driving signal for the pixel circuit. The source driving signal comprises a non-display phase of each frame of a display image. The non-display phase includes a first adjustment phase. In the first adjustment phase, the source driving signal output by the display driving chip to the pixel circuit is adjusted to be a target driving signal.

Inventors

• Lingfeng Zhou
• JINGXIONG ZHOU
• Jiaqin ZHANG

Assignees

• Xiamen Tianma Display Technology Co., Ltd.

Dates

Publication Date

20260512

Application Date

20241105

Priority Date

20240524

Claims (16)

1. 1 . A display panel, comprising a display driving chip and a pixel circuit, wherein the display panel includes a specific display area and a straight edge display area; the display driving chip is configured to provide a source driving signal for the pixel circuit; and the source driving signal comprises a non-display phase of each frame of a display image; and the non-display phase comprises a first adjustment phase; in the first adjustment phase, the source driving signal output by the display driving chip to the pixel circuit is adjusted to become a target driving signal for compensating negative voltage coupling caused by black insertion performed on the specific display area.
2. 2 . The display panel according to claim 1 , wherein a start time of the first adjustment phase is consistent with a start time of the non-display phase.
3. 3 . The display panel according to claim 2 , wherein an end time of the first adjustment phase is consistent with an end time of the non-display phase.
4. 4 . The display panel according to claim 1 , wherein the first adjustment phase comprises N sub-phases; N is a positive integer; and the source driving signal comprises a jump in at least one sub-phase of the N sub-phases.
5. 5 . The display panel according to claim 4 , wherein a duration of at least one sub-phase of the N sub-phases is not less than a pre-determined recovery duration and not greater than a duration of the first adjustment phase; and the pre-determined recovery duration is a data writing duration of a storage capacitor in the pixel circuit.
6. 6 . The display panel according to claim 5 , wherein the source driving signal jumps in a first sub-phase of the N sub-phases; and a start time of the first sub-phase of the N sub-phases is consistent with a start time of the first adjustment phase.
7. 7 . The display panel according to claim 6 , wherein a duration of the first sub-phase of the N sub-phases is equal to the duration of the first adjustment phase.
8. 8 . The display panel according to claim 4 , wherein the source driving signal further comprises a display phase of each frame of the display image; a duration of at least one sub-phase of the N sub-phases is not less than a duration of a coupling voltage generated by the pixel circuit in the display phase.
9. 9 . The display panel according to claim 1 , wherein the non-display phase further comprises a second adjustment phase in addition to the first adjustment phase; and in the second adjustment phase, the source driving signal output by the display driving chip to the pixel circuit is adjusted to be the target driving signal.
10. 10 . The display panel according to claim 9 , wherein a duration of the second adjustment phase is not less than a pre-determined recovery duration; and the pre-determined recovery duration is a data writing duration of a storage capacitor in the pixel circuit.
11. 11 . The display panel according to claim 9 , wherein a start time of the second adjustment phase is consistent with an end time of the first adjustment phase.
12. 12 . The display panel according to claim 11 , wherein an end time of the second adjustment phase is consistent with an end time of the non-display phase.
13. 13 . The display panel according to claim 1 , wherein a voltage range of the source driving signal after a jump is 5-6V.
14. 14 . A driving method of a display panel, wherein the driving method is applied to the display panel according to claim 1 ; and the driving method comprises: the source driving signal, comprising the non-display phase of each frame of the display image; and the non-display phase, comprising the first adjustment phase; and in the first adjustment phase, the source driving signal output by a display driving chip to the pixel circuit is adjusted to the target driving signal.
15. 15 . A non-transitory computer-readable storage medium, containing a computer program that, when being executed, causes at least one processor to perform the driving method according to claim 14 .
16. 16 . A display device, comprising a display panel, wherein the display panel includes a specific display area and a straight edge display area; the display panel comprises a display driving chip and a pixel circuit; the display driving chip is configured to provide a source driving signal for the pixel circuit; and the source driving signal comprises a non-display phase of each frame of a display image; and the non-display phase comprises a first adjustment phase; in the first adjustment phase, the source driving signal output by the display driving chip to the pixel circuit is adjusted to become a target driving signal for compensating negative voltage coupling caused by black insertion performed on the specific display area.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims priority to Chinese Patent Application No. 202410658851.9, filed on May 24, 2024, the entire content of which is incorporated herein by reference. TECHNICAL FIELD The present disclosure relates to the technical field of display control, and in particular to a display panel, a driving method thereof, and a display device. BACKGROUND In a product appearance design of a display panel, the display panel is not necessarily a regular shape. Usually, the shape of the display panel has an arc structure, which involves curvature. For example, there are four R-corners (i.e., rounded corners) in a mobile phone screen and a U-corner at a camera position. With the continuous development of display technology, when there is an R-corner structure or a U-corner structure in the display panel, it is necessary to use special algorithms for the R-corner or U-corner based on customer needs to improve the display effect of the panel. Generally, the R-corner black insertion algorithm is used to address related issues. For example, compensating for the sawtooth issue to ensure smooth transitions at the R-corner. Alternatively, compensating for different R-corner curvatures according to different customer needs. However, due to the black insertion algorithm at the R-corner or U-corner, and a lack of algorithmic processing at the straight edge of the screen, there is uneven brightness between the R-corner and the area below the straight edge. SUMMARY One aspect of the present disclosure provides a display panel. The display panel includes a display driving chip and a pixel circuit. The display driving chip is configured to provide a source driving signal for the pixel circuit. The source driving signal comprises a non-display phase of each frame of a display image. The non-display phase includes a first adjustment phase. In the first adjustment phase, the source driving signal output by the display driving chip to the pixel circuit is adjusted to be a target driving signal. Another aspect of the present disclosure provides a display device. The display device includes a display panel. The display panel includes a display driving chip and a pixel circuit. The display driving chip is configured to provide a source driving signal for the pixel circuit. The source driving signal includes a non-display phase of each frame of a display image. The non-display phase includes a first adjustment phase. In the first adjustment phase, the source driving signal output by the display driving chip to the pixel circuit is adjusted to be a target driving signal. BRIEF DESCRIPTION OF THE DRAWINGS In order to better convey embodiments of the present disclosure or the technical solutions, a brief introduction will be described below to the drawings that need to be used in the description of embodiments or technical solutions. Obviously, the drawings in the following description are some embodiments of the present disclosure. For those persons of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting any creative effort. FIG. 1 illustrates a schematic structural diagram of row sub-pixels and column sub-pixels of a display panel according to one embodiment of the present disclosure. FIG. 2 illustrates a circuit diagram of a 7T1C pixel circuit according to one embodiment of the present disclosure. FIG. 3 illustrates a schematic structural diagram of a display panel according to one embodiment of the present disclosure. FIG. 4 illustrates a schematic diagram showing a division of a non-display phase according to one embodiment of the present disclosure. FIG. 5 illustrates a schematic diagram showing positions of R-corner areas and straight edge areas in a display panel according to one embodiment of the present disclosure. FIG. 6 illustrates a schematic diagram of the start time of the first adjustment phase according to one embodiment of the present disclosure. FIG. 7 illustrates a schematic diagram of the end time of the first adjustment phase according to one embodiment of the present disclosure. FIG. 8 illustrates a schematic diagram showing dividing the first adjustment phase into N sub-phases according to one embodiment of the present disclosure. FIG. 9 illustrates a schematic diagram of the start time of the first sub-phase T1 of the first adjustment phase according to one embodiment of the present disclosure. FIG. 10 illustrates a schematic diagram of a black insertion phase according to one embodiment of the present disclosure. FIG. 11 illustrates a schematic diagram of the start time of the second adjustment phase according to one embodiment of the present disclosure. FIG. 12 illustrates a timing diagram of a source driving signal according to one embodiment of the present disclosure. FIG. 13 illustrates a timing diagram of a source driving signal according to another embodiment of the present disclosure. FIG. 14 illustrates a timing diagra