Display panel, driving method thereof, and display device

Abstract

This application discloses a display panel and its driving method and display device. The display panel includes: multiple sub-pixel columns and multiple data lines. The multiple sub-pixel columns include a first sub-pixel column and a second sub-pixel column. The multiple data lines include a first data line and a second data line. The first sub-pixel column is connected to the first data line, and the second sub-pixel column is connected to the second data line. The working stages of the display panel include a display frame and a display blank segment, with the display blank segment located after the display frame. When the data voltages of the first sub-pixel column and the second sub-pixel column are different in the display frame, in the display blank segment, the voltage on the first data line is V1, and the voltage on the second data line is V2, where V1 ≠ V2. According to the embodiments of this application, it is beneficial to improve the screen flicker problem of the display panel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel, a driving method thereof and a display device. BACKGROUND

[0002] With the continuous updating of display technology, users have higher and higher requirements on the use performance of display products. However, at present, the display panel is prone to flicker problem in use. SUMMARY

[0003] The display panel and the driving method thereof and the display device provided by the embodiments of the present application are beneficial to improve the flicker problem of the display panel.

[0004] In a first aspect, the embodiments of the present application provide a display panel, comprising: a plurality of sub-pixel columns and a plurality of data lines, the plurality of sub-pixel columns comprising a first sub-pixel column and a second sub-pixel column, the plurality of data lines comprising a first data line and a second data line, the first sub-pixel column being connected to the first data line, and the second sub-pixel column being connected to the second data line; a working stage of the display panel comprising a display frame and a display blank section, the display blank section being located after the display frame; in a case where data voltages of the first sub-pixel column and the second sub-pixel column are different in the display frame, voltages on the first data line and the second data line are V1 and V2 respectively in the display blank section, and V1≠V2.

[0005] Based on the same inventive concept, in a second aspect, the embodiments of the present application provide a driving method of a display panel, the display panel comprising: a plurality of sub-pixel columns and a plurality of data lines, the plurality of sub-pixel columns comprising a first sub-pixel column and a second sub-pixel column, the plurality of data lines comprising a first data line and a second data line, the first sub-pixel column being connected to the first data line, and the second sub-pixel column being connected to the second data line; a working stage of the display panel comprising a display frame and a display blank section, the display blank section being located after the display frame; in a case where data voltages of the first sub-pixel column and the second sub-pixel column are different in the display frame, the driving method comprising:

[0006] in the display blank section, pre-charging a voltage V1 to the first data line and a voltage V2 to the second data line, and V1≠V2.

[0007] Based on the same inventive concept, in a third aspect, the embodiments of the present application provide a display device comprising the display panel according to the first aspect.

[0008] In the embodiment of the present application, in the case that the data voltages of the first and second sub-pixel columns are different, the voltage on the first data line is different from the voltage on the second data line in the display blank section. In this way, different voltages can be pre-charged to the first and second data lines in the display blank section according to the actual display condition, or one of the first and second data lines is pre-charged with a voltage and the other is not pre-charged with a voltage in the display blank section. In this way, different pre-charged voltages can be applied to different data lines according to different display conditions, which is beneficial to adjusting the voltage difference between the pixel electrode corresponding to the sub-pixel and the data line connected to the pixel electrode in the display blank section, so as to adjust the voltage difference corresponding to different sub-pixel columns in the small direction, thereby improving the current leakage. BRIEF DESCRIPTION OF DRAWINGS

[0009] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments thereof as taken in conjunction with the accompanying drawings, in which like references denote like features, and in which:

[0010] Figure 1 FIG. 1 shows a top view of a display panel according to an embodiment of the present application;

[0011] Figure 2 FIG. 2 shows a timing diagram of the display panel according to an embodiment of the present application;

[0012] Figure 3 FIG. 3 shows a cross-sectional view of the display panel according to an embodiment of the present application;

[0013] Figure 4 FIG. 4 shows a pixel arrangement structure of the display panel according to an embodiment of the present application;

[0014] Figure 5 FIG. 5 shows a timing diagram of the display panel according to another embodiment of the present application;

[0015] Figure 6 FIG. 6 shows a timing diagram of the display panel according to yet another embodiment of the present application;

[0016] Figure 7 FIG. 7 shows a top view of a display panel according to another embodiment of the present application;

[0017] Figure 8 FIG. 8 shows a timing diagram of the display panel according to yet another embodiment of the present application;

[0018] Figure 9 FIG. 9 shows a flowchart of a driving method of the display panel according to an embodiment of the present application;

[0019] Figure 10 A structural schematic diagram of a display device provided by an embodiment of the present application is shown.

[0020] Label explanations:

[0021] 100, display panel;

[0022] 10, sub-pixel column; 10a, sub-pixel column group;

[0023] 11, first sub-pixel column; 12, second sub-pixel column;

[0024] P, sub-pixel; T1, transistor; Lc, liquid crystal; C, capacitor; E1, pixel electrode; E2, common electrode;

[0025] 101, array substrate; 102, color film substrate;

[0026] 20, data line;

[0027] 21, first data line; 22, second data line;

[0028] Source, data signal end;

[0029] T2, switch tube; T21, first switch tube; T22, second switch tube;

[0030] CKV, scan line;

[0031] 1000, display device. DETAILED DESCRIPTION

[0032] The features and exemplary embodiments of various aspects of the present application will be described in detail below, in order to make the purposes, technical solutions and advantages of the present application more clear and apparent, the present application will be further described in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present application by showing examples of the present application.

[0033] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0034] It should be understood that when describing the structure of a component, when one layer, one region is referred to as being "on" or "above" another layer, another region, it can mean being directly on or above the other layer, the other region, or other layers or regions can be included therebetween. And if the component is turned over, the layer, the region will be "under" or "below" the other layer, the other region.

[0035] It should be understood that the term "and / or" used herein only describes an association relationship of associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present document generally represents an "or" relationship between the front and rear associated objects.

[0036] In the embodiments of the present application, the term "connection" can mean that two components are directly connected, or that two components are electrically connected via one or more other components. The term "drive" can mean "control" or "operation". The term "part" can mean "part". The term "end" can mean "end section" or "end edge".

[0037] Various modifications and changes can be made to the present application in light of the foregoing without departing from the spirit or scope of the application, which is defined in the appended claims. Accordingly, the present application is intended to embrace all such modifications and changes that fall within the scope of the corresponding claims (claimed technical solutions) and their equivalents. It should be noted that the embodiments provided by the present application can be combined with each other without contradiction.

[0038] Before the technical solutions provided by the embodiments of the present application are described, in order to facilitate the understanding of the embodiments of the present application, the present application first specifically describes the problems existing in the related art:

[0039] At present, the display panel is prone to flicker problem during use, especially at low refresh frequency.

[0040] The inventor studies the cause of the above problem and finds that the sub-pixel leakage to the data line will cause flicker.

[0041] To solve the above technical problems, the embodiments of the present application provide a display panel and a driving method thereof, and a display device. The embodiments of the present application will be described below with reference to the drawings.

[0042] It should be noted that the embodiments provided by the present application are not intended to limit the scope of the present application.

[0043] Firstly, the display panel provided by the embodiments of the present application will be introduced. As an example, the display panel provided by the embodiments of the present application can be a liquid crystal display panel.

[0044] To facilitate the understanding of the scheme and the subsequent development of the scheme, the related concepts mentioned in the present application will be explained first.

[0045] The working process of the display panel can include a display frame and a display blank section, and the display blank section is located after the display frame. It can be understood that there can be a display blank section after each display frame. In the display technology field, the display frame is the effective display period in a picture display period, which can also be called Vactive area. The display blank section can also be called Vertical Front Porch (VFP). VFP is usually distributed after the display frame. It can be understood that VFP is distributed between the display frames. The display blank section can be used for preparing and transmitting picture data, and no actual picture display is performed. In a more specific way, the display blank section can be distributed after the data of the previous frame picture is written in the last row of sub-pixels.

[0046] As shown in FIG. 1, the display panel 100 can include a plurality of sub-pixel columns 10 and a plurality of data lines 20. The plurality of sub-pixel columns 10 are arranged along a first direction X, and each sub-pixel column 10 can include a plurality of sub-pixels P arranged along a second direction Y. The first direction X intersects the second direction Y, and the first direction X can be a row direction and the second direction Y can be a column direction. Figure 1 The plurality of data lines 20 are arranged along the first direction X, and each data line 20 extends along the second direction Y. The data line 20 is connected with the sub-pixel P in the sub-pixel column 10, and the data line 20 is connected with the data signal end Source of the display panel.

[0047]

[0048] ​Multiple sub-pixel columns 10 may include a first sub-pixel column 11 and a second sub-pixel column 12, and multiple data lines 20 may include a first data line 21 and a second data line 22. The first sub-pixel column 11 is connected to the first data line 21, and the second sub-pixel column 12 is connected to the second data line 22.

[0049] like Figure 2 As shown, in a display frame, the data signal source can transmit the corresponding data voltage Vdata of the display frame to each sub-pixel column 10 via data line 20. The data voltages of the first sub-pixel column 11 and the second sub-pixel column 12 in the display frame may be the same or different. When the data voltages of the first sub-pixel column 11 and the second sub-pixel column 12 in the display frame are different, in the display blank segment VFP, the data signal source can provide voltage to at least one of the first data line 21 and the second data line 22 to precharge at least one of the first data line 21 and the second data line 22. In the display blank segment VFP, the voltage on the first data line 21 is V1, and the voltage on the second data line 22 is V2, where V1 ≠ V2.

[0050] For example, taking a liquid crystal display panel as an example, please refer to the reference. Figure 1 and Figure 3 Sub-pixel P may include a pixel circuit, which may include a transistor T1. The transistor T1 is connected to the pixel electrode E1 and the data line 20. During the display frame, the transistor T1 is turned on, and the data voltage on the data line 20 can be transmitted to the pixel electrode E1. The electric field formed by the pixel electrode E1 and the common electrode E2 can be used to control the flip angle of the liquid crystal Lc, thereby controlling the transmittance of the liquid crystal Lc to light.

[0051] During the blank display segment VFP, transistor T1 is off. During the blank display segment VFP, the voltage difference between the pixel electrode E1 corresponding to the first sub-pixel column 11 and the first data line 21 is called the first voltage difference, and the voltage difference between the pixel electrode E1 corresponding to the second sub-pixel column 12 and the second data line 22 is called the second voltage difference. However, when the data voltages of the first sub-pixel column 11 and the second sub-pixel column 12 are different (i.e., the pixel electrode E1 corresponding to the first sub-pixel column 11 and the pixel electrode E1 corresponding to the second sub-pixel column 12 have different data voltages for the display frame), at least one of the first voltage difference and the second voltage difference will be larger, which can easily lead to leakage current and cause screen flicker.

[0052] In this embodiment, when the data voltages of the first sub-pixel column 11 and the second sub-pixel column 12 in the display frame are different, the voltage V1 on the first data line 21 and the voltage V2 on the second data line 22 are different in the display blank segment VFP. This allows for different pre-charge voltages on the first data line 21 and the second data line 22 in the display blank segment VFP according to the actual display situation. In other words, one of the first data line 21 and the second data line 22 can be pre-charged in the display blank segment VFP, while the other is not pre-charged. This allows for flexible pre-charge voltages on different data lines according to different display situations, which is beneficial for adjusting the voltage difference between the pixel electrode corresponding to the sub-pixel and the data line connected to it in the display blank segment VFP. This helps to ensure that the voltage difference corresponding to different sub-pixel columns is small, thereby improving leakage current.

[0053] For example, such as Figure 3 As shown, the display panel may include an array substrate 101 and a color filter substrate 102 facing each other, and the liquid crystal Lc may be located between the array substrate 101 and the color filter substrate 102. It should be noted that... Figure 3 The positions and structures of the middle pixel electrode E1 and the common electrode E2 are merely exemplary and are not intended to limit this application.

[0054] For example, the VTEST signal on the display panel can be used to indicate the end of a display frame and the beginning of a display blank segment VFP.

[0055] In some embodiments, when the data voltage of the first sub-pixel column 11 and the second sub-pixel column 12 is the same in the display frame, the voltage on the first data line 21 and the voltage on the second data line 22 are the same in the display blank segment VFP.

[0056] For example, in the blank display segment VFP, the first data line 21 and the second data line 22 can be pre-charged with the same voltage (e.g., 5V). Alternatively, in the blank display segment VFP, neither the first data line 21 nor the second data line 22 is pre-charged with voltage; in this case, both the first data line 21 and the second data line 22 can be 0V.

[0057] In some embodiments, such as Figure 1 As shown, the display panel 100 includes multiple scan lines CKV, which connect multiple sub-pixels P in the same row of the display panel. Sub-pixels P in different rows are connected to different scan lines CKV.

[0058] For example, scan line CKV is connected to the gate of transistor T1 in sub-pixel P. The signal on scan line CKV can be used to control the state of transistor T1. When the signal on scan line CKV is at an on level, transistor T1 is turned on, and the signal on data line 20 can be written to the sub-pixel through transistor T1. When the signal on scan line CKV is at an off level, transistor T1 is turned off, and the signal on data line 20 cannot be written to the sub-pixel through transistor T1.

[0059] like Figure 2 As shown, in the blank display segment VFP, the signal on the scan line CKV is at the cutoff level. Thus, even if a certain voltage is pre-charged to the data line 20 in the blank display segment VFP, this pre-charged voltage will not be written to the sub-pixel, and therefore the pre-charged voltage will not affect the normal illumination of the sub-pixel.

[0060] Understandably, in the blank display area VFP, the signals on each scan line CKV are at a cutoff level. In the blank display area VFP, scan lines CKV can be globally controlled.

[0061] For example, within a display frame, multiple scan lines CKV can sequentially provide conduction levels, thereby scanning multiple rows of sub-pixels line by line; multiple data lines 20 can sequentially provide data voltages, thereby driving multiple rows of sub-pixels line by line.

[0062] It should be noted that this application Figure 2 In the accompanying drawings, the scan line CKV is used as an example, with low level vgl as the cutoff level and high level vgh as the on level. This is not intended to limit this application.

[0063] For example, in a display frame, if the data voltage written to a subpixel is 0, the subpixel does not emit light or is in a dark state; if the data voltage written to a subpixel is greater than 0, the subpixel emits light or is in a bright state.

[0064] In some embodiments, when the data voltage of at least one of the multiple sub-pixels P in the first sub-pixel column 11 is greater than 0 and the data voltage of multiple sub-pixels in the second sub-pixel column 12 is equal to 0, that is, when the first sub-pixel column 11 is in a bright state and the second sub-pixel column 12 is in a dark state, a certain voltage can be pre-charged to the first data line 21 in the blank display segment VFP, but the second data line 22 is not pre-charged. In this way, when the blank display segment VFP is displayed, the voltage V1 on the first data line 21 is greater than 0 and the voltage on the second data line 22 is equal to 0.

[0065] For example, in a display frame, the data voltage of multiple sub-pixels P in the first sub-pixel column 11 is 2.5V, and the data voltage of multiple sub-pixels in the second sub-pixel column 12 is 0V. If the first data line 21 and the second data line 22 are pre-charged with 5V in the display blank segment VFP, the second data line 22 will be overcharged, resulting in a large voltage difference between the second sub-pixel column 12 and the second data line 22 in the display blank segment VFP, which will cause severe leakage current in the second sub-pixel column 12.

[0066] In this embodiment, when the first sub-pixel column 11 is in a bright state and the second sub-pixel column 12 is in a dark state, a certain voltage is pre-charged to the first data line 21 in the display blank segment VFP, but the second data line 22 is not pre-charged. This can prevent the second data line 22 from being overcharged, thereby improving the problem of severe leakage current in the second sub-pixel column 12 caused by the large voltage difference between the second sub-pixel column 12 and the second data line 22 in the display blank segment VFP.

[0067] For example, such as Figure 1 As shown, the display panel includes a first switching transistor T21 and a second switching transistor T22. A first data line 21 is connected to the data signal terminal Source of the display panel via the first switching transistor T21, and a second data line is connected to the data signal terminal Source of the display panel via the second switching transistor. The first switching transistor T21 can be controlled by a first control signal CKH1, and the second switching transistor T22 can be controlled by a second control signal CKH2.

[0068] like Figure 2 As shown, in the blank display segment VFP, the first control signal CKH1 can be at the on level vgh, turning on the first switch T21; the second control signal CKH2 can be at the off level vgl, turning off the second switch T22 (i.e., turning off the second switch T22). In this sequence, the data signal source can be transmitted to the first data line 21, thus pre-charging the first data line 21; the data signal source may not be transmitted to the second data line 22, thus not pre-charging the second data line 22.

[0069] Understandably, in a display frame, if the second sub-pixel column 12 is bright while the first sub-pixel column 11 is dark, then in a blank display area, the first switch T21 can be turned off and the second switch T22 can be turned on. In this case, the data signal source cannot be transmitted to the first data line 21, thus preventing pre-charging of the first data line 21; the data signal source can be transmitted to the second data line 22, thereby enabling pre-charging of the second data line 22.

[0070] For example, all sub-pixel columns can be divided into odd-numbered columns and even-numbered columns. In the blank display area, uniform pre-charge control is applied to all odd-numbered sub-pixel columns, and uniform pre-charge control is applied to all even-numbered sub-pixel columns. In the blank display area, the data lines connected to all odd-numbered sub-pixel columns are pre-charged with the same voltage, and the data lines connected to all even-numbered sub-pixel columns are pre-charged with the same other voltage, thus simplifying the control timing.

[0071] In some embodiments, the first sub-pixel column 11 may include an odd-numbered column among a plurality of sub-pixel columns, and the second sub-pixel column 12 may include an even-numbered column among a plurality of sub-pixel columns.

[0072] During the display process, when it is detected that the odd-numbered sub-pixel columns are in a bright state and the even-numbered sub-pixel columns are in a dark state, in the display blank area VFP, the multiple first data lines 21 connected to the multiple odd-numbered sub-pixel columns can be precharged with a voltage V1 greater than 0, and the multiple second data lines 22 connected to the multiple even-numbered sub-pixel columns can be precharged without a voltage. That is to say, the voltage V2 on the multiple second data lines 22 connected to the multiple even-numbered sub-pixel columns is equal to 0.

[0073] In this embodiment, the same voltage can be pre-charged to the data lines connected to all odd-numbered sub-pixel columns in the display blank area, while no pre-charge voltage is applied to the data lines connected to all even-numbered sub-pixel columns, simplifying the control timing. Furthermore, not pre-charging the data lines also helps reduce power consumption.

[0074] Understandably, the same design approach can be used when even-numbered sub-pixel columns are detected as bright and odd-numbered sub-pixel columns as dark. That is, in this case, the first sub-pixel column 11 can include even-numbered columns from multiple sub-pixel columns, and the second sub-pixel column 12 can include odd-numbered columns from multiple sub-pixel columns.

[0075] Specifically, during the display process, when it is detected that the even-numbered sub-pixel columns are in a bright state and the odd-numbered sub-pixel columns are in a dark state, in the display blank area VFP, the multiple first data lines 21 connected to the multiple even-numbered sub-pixel columns can be precharged with a voltage V1 greater than 0, and the multiple second data lines 22 connected to the multiple odd-numbered sub-pixel columns can be precharged without a voltage. That is to say, the voltage V2 on the multiple second data lines 22 connected to the multiple odd-numbered sub-pixel columns is equal to 0.

[0076] In this embodiment, the same voltage is pre-charged to the data lines connected to all even-numbered sub-pixel columns in the display blank area, while no pre-charge voltage is applied to the data lines connected to all odd-numbered sub-pixel columns, simplifying the control timing. Furthermore, not pre-charging the data lines also helps reduce power consumption.

[0077] As an example, such as Figure 4 As shown, the pixel arrangement structure of the display panel can include RGBRGB, where R represents red subpixels, G represents green subpixels, and B represents blue subpixels. Subpixels in the same column have the same color. Red subpixels R can be distributed in odd-numbered columns or even-numbered columns; the same applies to green subpixels G and blue subpixels B.

[0078] For example, such as Figure 4 As shown, each column of data lines 20 can be connected to the data signal terminal Source via the switching transistor T2. When the display blank segment VFP is on, the voltage on the data signal terminal Source can be transmitted to the data line 20, so the data line 20 can be precharged with a certain voltage; when the switching transistor T2 is off, the voltage on the data signal terminal Source cannot be transmitted to the data line 20, so the data line 20 cannot be precharged with voltage.

[0079] like Figure 5 As shown, signal CKHR controls switch T2 corresponding to red sub-pixel R, signal CKHG controls switch T2 corresponding to green sub-pixel G, and signal CKHRB controls switch T2 corresponding to blue sub-pixel B. For example, in a display frame, sub-pixels in odd-numbered columns are bright, and sub-pixels in even-numbered columns are dark. In this case, in the blank display segment VFP, signal CKHR can be at the on level vgh for odd-numbered columns and at the off level vgl for even-numbered columns; signal CKHG can be at the on level vgh for odd-numbered columns and at the off level vgl for even-numbered columns; signal CKHB can be at the on level vgh for odd-numbered columns and at the off level vgl for even-numbered columns; thus, the data lines connected to sub-pixels in odd-numbered columns can be pre-charged, while the data lines connected to sub-pixels in even-numbered columns cannot be pre-charged.

[0080] In addition, such as Figure 5 As shown, in the blank section VFP, each data signal terminal Source can provide the same voltage (e.g., 5V). Since the switch T2 corresponding to the even column is off, even if there is voltage at the data signal terminal Source, it will not be transmitted to the data line corresponding to the even column.

[0081] It should be noted that the pixel arrangement structure in the embodiments of this application may include, but is not limited to, those shown below. Figure 4 The pixel arrangement structure shown in this application embodiment may include, but is not limited to, the signal timing. Figure 5 The timing sequence is shown.

[0082] In some embodiments, the plurality of sub-pixel columns 10 include an i-th first sub-pixel column 11 and a j-th first sub-pixel column 11, and the i-th first sub-pixel column 11 and the j-th first sub-pixel column 11 have different data voltages in the display frame.

[0083] For example, the first data line connected to the i-th first sub-pixel column 11 is denoted as 21i, and the first data line connected to the j-th first sub-pixel column 11 is denoted as 21j.

[0084] like Figure 6 As shown, in the blank display segment VFP, the voltage on the first data line 21i electrically connected to the i-th first sub-pixel column is V1i, and the voltage on the first data line 21j electrically connected to the j-th first sub-pixel column is V1j, where V1i ≠ V1j.

[0085] For example, the difference in data voltage between the i-th first sub-pixel column 11 and the j-th first sub-pixel column 11 in the display frame may include: multiple sub-pixels in the i-th first sub-pixel column 11 all having data voltage Vdatai in the display frame, and multiple sub-pixels in the j-th first sub-pixel column 11 all having data voltage Vdataj in the display frame, where Vdatai ≠ Vdataj; or, the mean of the data voltage of multiple sub-pixels in the i-th first sub-pixel column 11 in the display frame is not equal to the mean of the data voltage of multiple sub-pixels in the j-th first sub-pixel column 11 in the display frame; or, the mode of the data voltage of multiple sub-pixels in the i-th first sub-pixel column 11 in the display frame is not equal to the mode of the data voltage of multiple sub-pixels in the j-th first sub-pixel column 11 in the display frame.

[0086] In this embodiment of the application, taking the first sub-pixel column as being lit in the display frame as an example, the display status of different first sub-pixel columns in the display frame may be different. In this case, in the display blank segment VFP, the first data line connected to different first sub-pixel columns can be pre-charged with different voltages, so as to flexibly improve the leakage problem according to the actual display situation.

[0087] Similarly, if the second sub-pixel column is lit in the display frame, the display status of different second sub-pixel columns may also be different in the display frame. In this case, in the display blank segment VFP, the second data line connected to different second sub-pixel columns can be pre-charged with different voltages, so as to flexibly improve the leakage problem according to the actual display situation.

[0088] In some embodiments, such as Figure 7 As shown, the multiple sub-pixel columns 10 can be divided into multiple sub-pixel column groups 10a. Each sub-pixel column group 10a may include multiple first sub-pixel columns 11. Each sub-pixel column group 10a may also include multiple second sub-pixel columns 12.

[0089] For example, sub-pixel column groups 10a can be divided into regions. For instance, the regions containing multiple sub-pixel column groups 10a can be arranged in the first direction X.

[0090] In the blank display segment VFP, the voltage on the multiple first data lines 21 connected to the multiple first sub-pixel columns 11 within the same sub-pixel column group 10a is the same. In the blank display segment VFP, the voltage on the first data lines 21 connected to the first sub-pixel columns 11 within different sub-pixel column groups 10a is different.

[0091] For example, in the blank display segment VFP, the pre-charge voltage of 5V is applied to the multiple first data lines 21 connected to the multiple first sub-pixel columns 11 in one sub-pixel column group 10a, and the pre-charge voltage of 4.5V is applied to the multiple first data lines 21 connected to the multiple first sub-pixel columns 11 in another sub-pixel column group 10a.

[0092] In this embodiment, by grouping the sub-pixel columns, the same pre-charge processing is performed on the first data lines corresponding to the same group, and different pre-charge processing is performed on the first data lines corresponding to different groups. This allows for flexible adjustment of the pre-charge voltage according to the actual display situation, while avoiding overly complex control timing.

[0093] In some embodiments, such as Figure 8 As shown, the display frames include a first display frame and a second display frame, and the display blank segments include a first display blank segment VFP1 and a second display blank segment VFP2. The first display blank segment VFP1 is located after the first display frame, and the second display blank segment VFP2 is located after the second display frame.

[0094] In the first display frame and the second display frame, at least one of the data voltages of multiple sub-pixels in the first sub-pixel column 11 is greater than 0, and the data voltages of the first sub-pixel column 11 are different in the first display frame and the second display frame.

[0095] The difference in data voltage between the first sub-pixel column 11 in the first display frame and the second display frame may include: multiple sub-pixels in the first sub-pixel column 11 all having a data voltage of Vdata11 in the first display frame, and multiple sub-pixels in the first sub-pixel column 11 all having a data voltage of Vdata12 in the second display frame, where Vdata11 ≠ Vdata12; or, the average of the data voltages of multiple sub-pixels in the first sub-pixel column 11 in the first display frame is not equal to the average of the data voltages of multiple sub-pixels in the first sub-pixel column 11 in the second display frame; or, the mode of the data voltages of multiple sub-pixels in the first sub-pixel column 11 in the first display frame is not equal to the mode of the data voltages of multiple sub-pixels in the first sub-pixel column 11 in the second display frame.

[0096] In the first blank display segment VFP1, the voltage on the first data line 21 is V11; in the second blank display segment VFP2, the voltage on the first data line 21 is V12; V11≠V12.

[0097] For example, in the first blank display segment VFP1, the voltage V11 on the first data line 21 is 4.6V, and in the second blank display segment VFP2, the voltage V12 on the first data line 21 is 5V.

[0098] The display conditions may differ between different display frames. In this embodiment, different voltages are preset for the first data line 21 in the blank display area after different display frames, which can flexibly match different display conditions and improve leakage current problems.

[0099] It should be noted that the above embodiment takes the first sub-pixel column 11 as being in a bright state in the display frame as an example. When the second sub-pixel column 12 is in a bright state in the display frame, different voltages can also be preset for the second data line 22 in the display blank areas after different display frames. For example, in the first display frame and the second display frame, at least one of the data voltages of multiple sub-pixels in the second sub-pixel column 12 is greater than 0, and the data voltages of the second sub-pixel column 12 are different in the first display frame and the second display frame. In the first display blank area VFP1, the voltage on the second data line 22 is V21; in the second display blank area VFP2, the voltage on the second data line 22 is V22; V21 ≠ V22.

[0100] In some embodiments, during a display frame, at least one of the data voltages of multiple subpixels in the first subpixel column 11 is greater than 0, and the maximum value of the data voltage of the multiple subpixels in the first subpixel column 11 is V3; V1 ≥ V3. That is, the pre-charge voltage V1 of the first data line 21 in the display blank area is greater than or equal to the maximum data voltage V3 of the first subpixel column 11 in the display frame.

[0101] When the voltage pre-charged to the first data line 21 is greater than or equal to the maximum data voltage written to the first sub-pixel column 11, the voltage of any sub-pixel in the first sub-pixel column 11 can be prevented from flowing to the first data line, thereby improving the leakage problem.

[0102] In other embodiments, during the display frame, at least one of the data voltages of the plurality of subpixels in the first subpixel column 11 is greater than 0, and the mode value of the data voltages of the plurality of subpixels in the first subpixel column 11 is V4; V1≥V4.

[0103] In the display frame, the data voltages of multiple sub-pixels in the first sub-pixel column 11 may be different, and the modulo value of the data voltages of multiple sub-pixels in the first sub-pixel column 11 is the value that appears most frequently among the multiple values.

[0104] In the blank display area, the pre-charge voltage to a first data line 21 is the same. However, the data voltages of multiple sub-pixels in the first sub-pixel column 11 of the display frame may be different. Therefore, a larger pre-charge voltage is not necessarily better. If the pre-charge voltage is too large, the voltage difference between these sub-pixels and the first data line will be large for one or more sub-pixels in the first sub-pixel column 11. Thus, the pre-charge voltage will cause overcharging for these sub-pixels.

[0105] In this embodiment, the mode is used as the reference benchmark, which can take into account multiple sub-pixels in the first sub-pixel column, thereby improving the leakage problem of multiple sub-pixels in the first sub-pixel column.

[0106] In some other embodiments, during a display frame, at least one of the data voltages of the plurality of subpixels in the first subpixel column 11 is greater than 0, and the average value of the data voltages of the plurality of subpixels in the first subpixel column 11 is V5; V1≥V5.

[0107] As described above, the pre-charge voltage to a first data line 21 is the same in the blank display area. However, the data voltages of multiple sub-pixels in the first sub-pixel column 11 of the display frame may be different. Therefore, a larger pre-charge voltage is not necessarily better. If the pre-charge voltage is too large, the voltage difference between these sub-pixels and the first data line will be large for one or more sub-pixels in the first sub-pixel column 11. Thus, the pre-charge voltage will cause overcharging for these sub-pixels.

[0108] In this embodiment, the average value is used as a reference benchmark, which can also take into account multiple sub-pixels in the first sub-pixel column, thereby improving the leakage problem of multiple sub-pixels in the first sub-pixel column.

[0109] In some other embodiments, during the display frame, at least one of the data voltages of multiple subpixels in the first subpixel column 11 is greater than 0, and the data voltage of the subpixels of the display panel corresponding to the maximum brightness is V4; V1 = V4.

[0110] For example, the maximum gray level of the display panel is 255 gray levels. The brightness of 255 gray levels is the highest, and the data voltage V4 at the maximum brightness of 255 gray levels is equal to 5V.

[0111] When the data voltage of a sub-pixel is the voltage corresponding to grayscale 127 (e.g., 2.5V for grayscale 127), the deflection angle of the liquid crystal is at its maximum, making the liquid crystal most unstable. Therefore, a pre-charge voltage can be adjusted and adapted based on grayscale 125. If this pre-charge voltage can solve the leakage current problem at grayscale 125, then this pre-charge voltage can be used for all grayscale levels except grayscale 0.

[0112] In some scenarios, when the pre-charge voltage is equal to the data voltage corresponding to the maximum brightness of the sub-pixel, the pre-charge voltage can be adapted to 125 gray levels, and thus can be adapted to all gray levels except 0 gray level.

[0113] Based on the same inventive concept, this application also provides a method for driving a display panel. For example... Figure 1 As shown, the display panel includes multiple sub-pixel columns and multiple data lines. The multiple sub-pixel columns include a first sub-pixel column and a second sub-pixel column. The multiple data lines include a first data line and a second data line. The first sub-pixel column is connected to the first data line, and the second sub-pixel column is connected to the second data line.

[0114] The working phases of the display panel include display frames and display blank areas, with the display blank areas following the display frames.

[0115] like Figure 9 As shown, the display driving method provided in this application embodiment includes step 91.

[0116] Step 91: In the blank display area, precharge voltage V1 to the first data line and precharge voltage V2 to the second data line, where V1 ≠ V2.

[0117] In this embodiment, when the data voltages of the first sub-pixel column 11 and the second sub-pixel column 12 in the display frame are different, the voltage V1 on the first data line 21 and the voltage V2 on the second data line 22 are different in the display blank segment VFP. This allows for different pre-charge voltages on the first data line 21 and the second data line 22 in the display blank segment VFP according to the actual display situation. In other words, one of the first data line 21 and the second data line 22 can be pre-charged in the display blank segment VFP, while the other is not pre-charged. This allows for flexible pre-charge voltages on different data lines according to different display situations, which is beneficial for adjusting the voltage difference between the pixel electrode corresponding to the sub-pixel and the data line connected to it in the display blank segment VFP, thereby improving leakage current.

[0118] In some embodiments, in a display frame, at least one data voltage of multiple sub-pixels in a first sub-pixel column is greater than 0, and the data voltage of multiple sub-pixels in a second sub-pixel column is equal to 0.

[0119] V1 > 0, V2 = 0.

[0120] In some embodiments, the first sub-pixel column includes an odd-numbered column among a plurality of sub-pixel columns, and the second sub-pixel column includes an even-numbered column among a plurality of sub-pixel columns;

[0121] Alternatively, the first subpixel column may include even-numbered columns from a plurality of subpixel columns, and the second subpixel column may include odd-numbered columns from a plurality of subpixel columns.

[0122] In some embodiments, the plurality of sub-pixel columns include an i-th first sub-pixel column and a j-th first sub-pixel column, wherein the i-th first sub-pixel column and the j-th first sub-pixel column have different data voltages in the display frame;

[0123] The driving methods include:

[0124] In the blank display area, the voltage supplied to the first data line electrically connected to the i-th first sub-pixel column is V1i, and the voltage supplied to the first data line electrically connected to the j-th first sub-pixel column is V1j, where V1i ≠ V1j.

[0125] In some embodiments, multiple sub-pixel columns are divided into multiple sub-pixel column groups;

[0126] The driving methods include:

[0127] In the blank display area, the voltage supplied to the multiple first data lines connected to the multiple first sub-pixel columns within the same sub-pixel column group is the same;

[0128] In the blank display area, the voltage supplied to the first data line connected to the first sub-pixel column in different sub-pixel column groups is different.

[0129] In some embodiments, the display frame includes a first display frame and a second display frame, and the display blank segment includes a first display blank segment and a second display blank segment, wherein the first display blank segment is located after the first display frame and the second display blank segment is located after the second display frame;

[0130] In the first display frame and the second display frame, at least one of the data voltages of multiple sub-pixels in the first sub-pixel column is greater than 0, and the data voltages of the first sub-pixel column are different in the first display frame and the second display frame;

[0131] The driving methods include:

[0132] In the first blank display segment, the voltage supplied to the first data line is V11;

[0133] In the second blank display section, the voltage supplied to the first data line is V12;

[0134] V11≠V12.

[0135] In some embodiments, the display panel further includes multiple scan lines, and multiple sub-pixels in the same row of the display panel are connected to the scan lines;

[0136] The driving methods include:

[0137] In the blank display area, the signal on the control scan line is at the cutoff level.

[0138] In some embodiments, the display panel further includes a first switching transistor and a second switching transistor;

[0139] The first data line is connected to the data signal terminal of the display panel through the first switching transistor, and the second data line is connected to the data signal terminal of the display panel through the second switching transistor.

[0140] The driving methods include:

[0141] In the blank display area, control the first switch to turn on and control the second switch to turn off.

[0142] In some embodiments, in a display frame, at least one of the data voltages of multiple subpixels in the first subpixel column is greater than 0, and the maximum value of the data voltage of multiple subpixels in the first subpixel column is V3; V1≥V3.

[0143] In some embodiments, in a display frame, at least one of the data voltages of multiple sub-pixels in the first sub-pixel column is greater than 0, and the modulus of the data voltages of multiple sub-pixels in the first sub-pixel column is V4.

[0144] V1≥V4.

[0145] In some embodiments, in a display frame, at least one of the data voltages of multiple sub-pixels in the first sub-pixel column is greater than 0, and the average value of the data voltages of multiple sub-pixels in the first sub-pixel column is V5;

[0146] V1≥V5.

[0147] In some embodiments, in a display frame, at least one of the data voltages of multiple subpixels in the first subpixel column is greater than 0, and the data voltage of the subpixels of the display panel corresponding to the maximum brightness is V4;

[0148] V1 = V4.

[0149] In some embodiments, when the data voltage of the first sub-pixel column and the second sub-pixel column are the same in the display frame, the voltage on the first data line and the voltage on the second data line are the same in the display blank area.

[0150] Based on the same inventive concept, this application also provides a display device, including the display panel provided in this application. Please refer to... Figure 10 , Figure 10 This is a schematic diagram of the structure of a display device provided in an embodiment of this application. Figure 10 The provided display device 1000 includes the display panel 100 provided in any of the above embodiments of this application. Figure 10This embodiment uses a mobile phone as an example to illustrate the display device 1000. It is understood that the display device provided in this application embodiment can be other display devices with display functions, such as wearable products, computers, televisions, and in-vehicle display devices; this application does not impose specific limitations on these. The display device provided in this application embodiment has the beneficial effects of the display panel provided in this application embodiment. For details, please refer to the specific descriptions of the display panel in the above embodiments; these will not be repeated here.

[0151] The embodiments described above are not exhaustive, nor do they limit the application to the specific embodiments described herein. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to effectively utilize this application and its modifications. This application is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that, The display panel is a liquid crystal display panel, comprising: The liquid crystal display panel has multiple sub-pixel columns and multiple data lines. The multiple sub-pixel columns include a first sub-pixel column and a second sub-pixel column. The multiple data lines include a first data line and a second data line. The first sub-pixel column is connected to the first data line, and the second sub-pixel column is connected to the second data line. Each sub-pixel of the liquid crystal display panel includes a pixel electrode and a transistor. The pixel electrode is connected to the data line through the transistor. The display panel also includes multiple scan lines, and the gates of the transistors of multiple sub-pixels in the same row of the display panel are connected to the scan lines; The operation phase of the display panel includes a display frame and a display blank segment. The display blank segment is located after the display frame. In the display frame, the signal on the scan line includes a conduction level; throughout the display blank segment, the signal on the scan line is at a cutoff level. When the first sub-pixel column and the second sub-pixel column have different data voltages in the display frame, in the display blank area, the voltage on the first data line is V1 and the voltage on the second data line is V2, where V1 ≠ V2.

2. The display panel according to claim 1, characterized in that, In the display frame, at least one data voltage of multiple sub-pixels in the first sub-pixel column is greater than 0, and the data voltage of multiple sub-pixels in the second sub-pixel column is equal to 0. V1 > 0, V2 = 0.

3. The display panel according to claim 2, characterized in that, The first sub-pixel column includes odd-numbered columns from the plurality of sub-pixel columns, and the second sub-pixel column includes even-numbered columns from the plurality of sub-pixel columns; Alternatively, the first sub-pixel column may include even-numbered columns from the plurality of sub-pixel columns, and the second sub-pixel column may include odd-numbered columns from the plurality of sub-pixel columns.

4. The display panel according to claim 1, characterized in that, The plurality of sub-pixel columns include the i-th first sub-pixel column and the j-th first sub-pixel column, wherein the data voltage of the i-th first sub-pixel column and the j-th first sub-pixel column are different in the display frame; In the blank display area, the voltage on the first data line electrically connected to the i-th first sub-pixel column is V1i, and the voltage on the first data line electrically connected to the j-th first sub-pixel column is V1j, where V1i ≠ V1j.

5. The display panel according to claim 1, characterized in that, The multiple sub-pixel columns are divided into multiple sub-pixel column groups; In the blank display area, the voltage on the multiple first data lines connected to multiple first sub-pixel columns within the same sub-pixel column group is the same; In the blank display area, the voltage on the first data line connected to the first sub-pixel column in different sub-pixel column groups is different.

6. The display panel according to claim 1, characterized in that, The display frame includes a first display frame and a second display frame, and the display blank area includes a first display blank area and a second display blank area, wherein the first display blank area is located after the first display frame and the second display blank area is located after the second display frame; In the first display frame and the second display frame, at least one of the data voltages of multiple sub-pixels in the first sub-pixel column is greater than 0, and the data voltages of the first sub-pixel column are different in the first display frame and the second display frame; In the first blank display area, the voltage on the first data line is V11; In the second blank display area, the voltage on the first data line is V12; V11≠V12.

7. The display panel according to claim 2, characterized in that, The display panel also includes a first switching transistor and a second switching transistor; The first data line is connected to the data signal terminal of the display panel through the first switching transistor, and the second data line is connected to the data signal terminal of the display panel through the second switching transistor; In the blank display area, the first switch is turned on and the second switch is turned off.

8. The display panel according to claim 1, characterized in that, In the display frame, at least one of the data voltages of multiple sub-pixels in the first sub-pixel column is greater than 0, and the maximum value of the data voltage of multiple sub-pixels in the first sub-pixel column is V3; V1≥V3.

9. The display panel according to claim 1, characterized in that, In the display frame, at least one of the data voltages of the plurality of sub-pixels in the first sub-pixel column is greater than 0, and the modal value of the data voltages of the plurality of sub-pixels in the first sub-pixel column is V4; V1≥V4.

10. The display panel according to claim 1, characterized in that, In the display frame, at least one of the data voltages of multiple sub-pixels in the first sub-pixel column is greater than 0, and the average value of the data voltages of multiple sub-pixels in the first sub-pixel column is V5; V1≥V5.

11. The display panel according to claim 1, characterized in that, In the display frame, at least one of the data voltages of multiple sub-pixels in the first sub-pixel column is greater than 0, and the data voltage of the sub-pixels of the display panel corresponding to the maximum brightness is V4; V1 = V4.

12. The display panel according to claim 1, characterized in that, When the first sub-pixel column and the second sub-pixel column have the same data voltage in the display frame, the voltage on the first data line and the voltage on the second data line are the same in the display blank area.

13. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 12.

14. A driving method for a display panel, characterized in that, The display panel is a liquid crystal display panel. The display panel includes multiple sub-pixel columns and multiple data lines. The multiple sub-pixel columns include a first sub-pixel column and a second sub-pixel column. The multiple data lines include a first data line and a second data line. The first sub-pixel column is connected to the first data line, and the second sub-pixel column is connected to the second data line. Each sub-pixel of the liquid crystal display panel includes a pixel electrode and a transistor. The pixel electrode is connected to the data line through the transistor. The display panel also includes multiple scan lines. The gates of the transistors of multiple sub-pixels in the same row of the display panel are connected to the scan lines. The operation phase of the display panel includes a display frame and a display blank segment. The display blank segment is located after the display frame. During the display blank segment, the signal on the scan line is at the cutoff level. The driving method includes: In the blank display area, a pre-charge voltage V1 is applied to the first data line and a pre-charge voltage V2 is applied to the second data line, where V1 ≠ V2.

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