WO2020155261A1

WO2020155261A1 - Method, apparatus, and device for driving display panel

Info

Publication number: WO2020155261A1
Application number: PCT/CN2019/076211
Authority: WO
Inventors: 单剑锋
Original assignee: 惠科股份有限公司
Priority date: 2019-01-30
Filing date: 2019-02-27
Publication date: 2020-08-06
Also published as: CN109616075A; CN109616075B

Abstract

Disclosed in the present application are a method, an apparatus, and a device for driving a display panel. In the present invention, negative polarity driving is performed on high voltage positive polarity subpixels and low voltage negative polarity subpixels in a first pixel unit row and a second pixel unit row, and positive polarity driving is performed on high voltage negative polarity subpixels and low voltage positive polarity subpixels in the second pixel unit row and a third pixel unit row. The high voltage pixels and the low voltage pixels are alternatingly arranged and undergo positive and negative polarity driving on the basis of common electrode voltages. Thereby, the defect of increases in driving amplitude causing increases in power consumption and temperature and reduction in panel brightness is avoided.

Description

Driving method, device and equipment of display panel To

This application is required to be submitted to the Chinese Patent Office on January 30, 2019, and the application number is 201910101645.7 , The priority of the Chinese patent application with the title of "Display panel driving method, device, equipment and storage medium", the entire content of which is incorporated into the application by reference.

Technical field

This application relates to the field of liquid crystal displays, and in particular to a driving method, device and equipment of a display panel.

Background technique

The statements here only provide background information related to this application, and do not necessarily constitute prior art.

Most large-size liquid crystal display panels adopt a negative vertical alignment (VA) type or an in-plane switching (InPanel Switching, IPS) type. Compared with IPS liquid crystal technology, VA-type liquid crystal technology has the advantages of higher production efficiency and lower manufacturing cost. However, compared with IPS liquid crystal technology, it has obvious defects in optical properties. For example, VA-type The LCD panel will have color shift. When performing image display, the brightness of the pixel should ideally change linearly with the change of the voltage, so that the driving voltage of the pixel can accurately represent the gray scale of the pixel, which is reflected by the brightness. As shown in Figure 1a, when the VA-type liquid crystal technology is used, when viewing the display surface from a small viewing angle (for example, front view), the brightness of the pixel can meet the ideal situation, that is, it changes linearly with the voltage, as shown by the ideal curve in Figure 1a. However, when viewing the display surface from a larger viewing angle (for example, more than 160 degrees with the display surface), due to the limitation of the VA-type liquid crystal technology principle, the brightness of the pixel shows a rapid saturation with the voltage, and then slowly changes. As shown in the actual curve in Figure 1a. In this way, under a large viewing angle, the gray scale that the driving voltage should originally present is seriously deviated, that is, color shift appears. The example setting to improve the color shift is to subdivide each sub-pixel into a main pixel and sub-pixel, and then use a relatively high driving voltage to drive the main pixel, and use a relatively low driving voltage to drive the sub-pixels, main pixels and The sub-pixels display one sub-pixel together. In addition, when the relatively high driving voltage and the relatively low driving voltage drive the main pixel and the sub-pixel, the relationship between the brightness and the corresponding gray scale under the front viewing angle can be maintained unchanged. Generally, the method shown in Figure 1b is adopted. In the first half of the gray scale, the main pixel is driven by a relatively high driving voltage, and the sub-pixels are not displayed. The brightness of the entire sub-pixel is half of the brightness of the main pixel; In the second half, the main pixel is driven by a relatively high driving voltage, and the sub-pixel is driven by a relatively low driving voltage. The brightness of the entire sub-pixel is half of the sum of the brightness of the main pixel and the brightness of the sub-pixel. After such synthesis, the brightness curve under the large viewing angle is the actual curve in Fig. 1b, which is closer to the ideal curve, so the color shift under the large viewing angle is improved.

As the resolution of the exemplary display increases, the voltage driving frequency of the driving voltage of the pixels in the same row (where the high-voltage sub-pixels and low-voltage sub-pixels have different driving signals) will increase. If the adjacent sub-pixels adopt the example positive and negative poles In a flexible driving mode, the driving amplitude of adjacent sub-pixels will increase, and the driving frequency will increase. The increase of the driving amplitude will directly cause the power consumption of the driving integrated circuit and the temperature rise, and may cause the pixel to reduce the charging ability, which directly reflects the brightness of the panel Decline.

Summary of the invention

The main purpose of this application is to propose a method, device and device for driving a display panel, which aims to avoid the increase in driving amplitude directly causing the increase in power consumption and temperature rise of the driving integrated circuit, and the decrease in pixel charge capacity leads to the panel The problem of brightness drop.

To achieve the above objective, the present application provides a method for driving a display panel. The method for driving the display panel includes the following steps:

The display panel includes a display array, the display array includes pixel units arranged in an array, the pixel units include a first sub-pixel, a second sub-pixel, and a third sub-pixel in a row direction, and three sub-pixels of each pixel unit The pixels are aligned on the columns according to the order of arrangement; the driving method includes:

When the current time sequence is the first preset time sequence, the high-voltage positive polarity sub-pixels and the low-voltage negative polarity sub-pixels in the first row of pixel units and the second row of pixel units are negatively charged using the negative common electrode voltage of the first preset voltage Positive driving is performed on the high-voltage negative sub-pixels and the low-voltage positive sub-pixels in the second row of pixel units and the third row of pixel units using a positive common electrode voltage of a second preset voltage for positive driving, wherein A preset voltage is less than the original common electrode voltage, and the second preset voltage is greater than the original common electrode voltage;

Periodically inverting the first preset voltage and the second preset voltage when the data driving signal input by the data driving circuit is received and time sequence is reversed;

When the current timing is switched from the first preset timing to the second preset timing, the first preset is used for the high-voltage negative sub-pixels and the low-voltage positive sub-pixels of the first row of pixel units and the second row of pixel units. Set the positive common electrode voltage of the voltage to drive the positive polarity, and use the negative common electrode voltage of the second preset voltage for the high-voltage positive sub-pixels and low-voltage negative sub-pixels in the second row of pixel units and the third row of pixel units Drive negative polarity.

The driving method of the display panel proposed in this application adopts the first method for the high-voltage positive sub-pixels and the low-voltage negative sub-pixels in the first row of pixel units and the second row of pixel units when the current timing is the first preset timing. The negative common electrode voltage of the preset voltage is negatively driven, and the high-voltage negative sub-pixels and the low-voltage positive sub-pixels in the second row of pixel units and the third row of pixel units use the positive common electrode of the second preset voltage The voltage is driven with a positive polarity, wherein the first preset voltage is less than the original common electrode voltage, and the second preset voltage is greater than the original common electrode voltage; timing is reversed after receiving the data driving signal input by the data driving circuit When the first preset voltage and the second preset voltage are periodically reversed; when the current timing is switched from the first preset timing to the second preset timing, the first row The high-voltage negative sub-pixels and the low-voltage positive sub-pixels of the pixel units and the second row of pixel units use the positive common electrode voltage of the first preset voltage for positive driving, and the second row of pixel units and the third row of pixel units The high-voltage positive-polarity sub-pixels and low-voltage negative-polarity sub-pixels are driven by the negative common electrode voltage of the second preset voltage, and the high-voltage pixels and low-voltage pixels are interleaved and driven according to the common electrode voltage. The common electrode voltage adopts the interleaved positive and negative polarity driving arrangement according to the column direction, which solves the visual role deviation, and avoids the defects of increased power consumption, temperature rise and panel brightness reduction caused by increased driving amplitude, which improves the display effect and improves the user Experience. To

Description of the drawings

Figure 1a shows the relationship between the improved front color shift curve and the ideal curve;

Figure 1b shows the relationship between the improved color shift curve and the ideal curve;

FIG. 2 is a schematic diagram of the structure of a display device of a hardware operating environment involved in a solution of an embodiment of the application;

3 is a schematic flowchart of an embodiment of a driving method for a display panel of the present application;

4 is a schematic diagram of pixel driving arrangement of the driving method of the display panel of the present application;

5 is a schematic diagram of a first preset timing sequence of pixel driving in the driving method of the display panel of the present application;

6 is a schematic diagram of a second preset timing sequence of Vrd pixel driving in the driving method of the display panel of the present application;

FIG. 7 is a schematic structural diagram of an embodiment of a driving device for a display panel of the present application;

FIG. 8 is a schematic structural diagram of another embodiment of a driving device for a display panel of the present application.

The realization of the objectives, functional characteristics and advantages of the application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

detailed description

It should be understood that the specific embodiments described here are only used to explain the application, and are not set to limit the application.

Referring to FIG. 2, FIG. 2 is a schematic diagram of the structure of a display device of a hardware operating environment involved in a solution of an embodiment of the application.

As shown in FIG. 2, the display device may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a display panel 1004, and a memory 1005. Among them, the communication bus 1002 is configured to implement connection and communication between these components. The user interface 1003 may include a display screen (Display) and an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The memory 1005 may be a high-speed RAM memory, or a stable memory (non-volatile memory), such as a magnetic disk memory. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001, the display panel 1004 may be a liquid crystal display panel, or other display panels that can implement the same or similar functions.

Those skilled in the art can understand that the structure of the display device shown in FIG. 2 does not constitute a limitation on the display device, and may include more or fewer components than those shown in the figure, or a combination of certain components, or different component arrangements.

As shown in FIG. 2, the memory 1005, which is a computer storage medium, may include executable instructions of the display panel.

The processor 1001 and the memory 1005 in the display device of this application may be provided in the display device. The display device calls the executable instructions of the display panel stored in the memory 1005 through the processor 1001, and executes the execution of the drive device of the display panel. Operation.

In this embodiment, when the current time sequence is the first preset time sequence, the high voltage positive polarity sub-pixels and the low voltage negative polarity sub pixels in the first row of pixel units and the second row of pixel units adopt the negative polarity of the first preset voltage. The electrode voltage is driven with a negative polarity, and the high-voltage negative sub-pixels and the low-voltage positive sub-pixels in the second row of pixel units and the third row of pixel units are driven with a positive common electrode voltage with a second preset voltage, where , The first preset voltage is less than the original common electrode voltage, the second preset voltage is greater than the original common electrode voltage; when the data driving signal input by the data driving circuit is received and the timing is reversed, the first The preset voltage and the second preset voltage are periodically reversed; when the current timing is switched from the first preset timing to the second preset timing, the pixel units in the first row and the pixels in the second row are The high-voltage negative-polarity sub-pixels and low-voltage positive-polarity sub-pixels of the cell are driven with positive polarity using the positive common electrode voltage of the first preset voltage, and the high-voltage positive-polarity sub-pixels in the second row of pixel units and the third row of pixel units and The low-voltage negative sub-pixels are driven by the negative common electrode voltage of the second preset voltage, and the high-voltage pixels and low-voltage pixels are interleaved and driven according to the common electrode voltage, and the common electrode voltage is used according to the column direction. The interspersed positive and negative polarity drive arrangement solves the visual character deviation, and avoids the defects of increased power consumption, temperature rise and panel brightness reduction caused by increased drive amplitude, which improves the display effect and enhances the user experience.

Based on the above hardware structure, an embodiment of the driving method of the display panel of the present application is proposed.

Referring to FIG. 3, FIG. 3 is a schematic flowchart of an embodiment of a method for driving a display panel of the present application.

In an embodiment, the driving method of the display panel includes the following steps:

Step S10, when the current timing is the first preset timing, adopt the negative common electrode of the first preset voltage for the high-voltage positive sub-pixels and the low-voltage negative sub-pixels in the first row of pixel units and the second row of pixel units The voltage is driven with a negative polarity, and the high-voltage negative sub-pixels and the low-voltage positive sub-pixels in the second row of pixel units and the third row of pixel units are driven with a positive common electrode voltage of a second preset voltage, wherein, The first preset voltage is less than the original common electrode voltage, and the second preset voltage is greater than the original common electrode voltage.

It should be noted that the first sub-pixel, the second sub-pixel, and the third sub-pixel are a red sub-pixel, a green sub-pixel, and a blue sub-pixel in sequence, and the red sub-pixel, the green sub-pixel, and the The blue sub-pixels are sub-pixels of different polarity; the pixel design of the liquid crystal display panel in this embodiment is that one red, green, and blue sub-pixel is a pixel unit, that is, the first sub-pixel, the second sub-pixel, and The third sub-pixels correspond to red sub-pixels, green sub-pixels, and blue sub-pixels, and the red sub-pixels, green sub-pixels, and blue sub-pixels are hetero-polar sub-pixels, and each pixel unit uses high and low voltage interleaved The driving arrangement is that the lower pixels of each column are aligned with the upper pixels, and the pixel colors are the same, and the sub-pixels in the pixel unit in the column direction are aligned with the sub-pixels of the upper pixel unit.

It is understandable that, referring to FIG. 4, FIG. 4 is a schematic diagram of the pixel driving arrangement of the driving method of the display panel of the present application; when the current timing is the first preset timing, the high voltage positive electrodes of the first column of sub-pixels and the second column of sub-pixels The gender sub-pixel and the low-voltage negative sub-pixel, that is, the red sub-pixel R and the blue sub-pixel B, cooperate with the common electrode negative polarity circuit and voltage drive, that is, the common electrode voltage is negative, that is, the common electrode voltage Vcom1 is relative to the original common electrode The voltage Vcom is smaller, that is, Vcom1<Vcom; the high-voltage negative sub-pixels and low-voltage positive sub-pixels of the second and third columns of sub-pixels, that is, the green sub-pixel G, cooperate with the common common electrode positive circuit and voltage drive, that is The positive polarity of the common electrode voltage, that is, the common electrode voltage Vcom2 is larger than the original common electrode voltage Vcom, that is, Vcom2>Vcom. By analogy, the common electrode voltage circuit and driving of every two columns are based on the high-voltage positive sub-pixel and the low-voltage negative sub-pixel or the high-voltage negative sub-pixel and the low-voltage positive sub-pixel, and the common common-electrode circuit and the voltage are driven.

Step S20: When the data driving signal input by the data driving circuit is received and the time sequence is reversed, the first preset voltage and the second preset voltage are periodically reversed.

It is understandable that the data driving signal input by the data driving circuit is time-reversed as the voltage corresponding to the data driving signal is time-reversed, which can generally be denoted as Vgd, Vrd, Vbd, and d as constants 1, 2, 3. Vgd, Vrd, and Vbd respectively correspond to the initial driving voltages of the green sub-pixels, red sub-pixels, and green sub-pixels. Of course, they can also be other forms of initial driving voltages. This embodiment does not limit this; any sub-pixel is passed The equivalent voltage is driven.

It should be understood that in FIG. 4, when the current timing is the first preset timing, the common electrode voltage Vcom2 corresponding to the low-voltage sub-pixels VGd_1, VGd_3, and VGd_5 of the column G sub-pixels and the high-voltage sub-pixels VGd_2, VGd_4, and VGd_6 is positive. The driving voltage, that is, the positive polarity of the common electrode voltage, that is, the common electrode voltage Vcom2 is larger than the original common electrode voltage Vcom, that is, Vcom2>Vcom; after receiving the data driving signal input by the data driving circuit for timing inversion, the common electrode voltage also matches The polarity of the driving reversal is the switching of the periodic voltage of the drawing frame, that is, the common electrode voltage Vcom1 becomes a positive driving voltage, and the common electrode voltage is positive, that is, the common electrode voltage Vcom1 is larger than the original common electrode voltage Vcom, that is, Vcom1> Vcom; The common electrode voltage Vcom2 becomes a negative driving voltage, and the negative polarity of the common electrode voltage, that is, the common electrode voltage Vcom2 is smaller than the original common electrode voltage Vcom, that is, Vcom2<Vcom. In addition, the low-voltage sub-pixels VGd_1, VGd_3, and VGd_5 are driven from a positive polarity to a negative polarity, and the high-voltage sub-pixels VGd_2, VGd_4, and VGd_6 are driven from a negative polarity to a positive polarity.

Step S30. When the current timing is switched from the first preset timing to the second preset timing, the high-voltage negative sub-pixels and the low-voltage positive sub-pixels of the first row of pixel units and the second row of pixel units are adopted The positive common electrode voltage of the first preset voltage is driven with the positive polarity, and the high-voltage positive sub-pixels and the low-voltage negative sub-pixels in the second row of pixel units and the third row of pixel units adopt the negative polarity of the second preset voltage The common electrode voltage is driven with negative polarity.

It is understandable that referring to FIG. 4; when the current timing is switched from the first preset timing to the second preset timing, the high-voltage negative sub-pixels and low-voltage positive sub-pixels of the first column of sub-pixels and the second column of sub-pixels The gender sub-pixels, namely the red sub-pixel and the blue sub-pixel, cooperate with the common common electrode positive polarity circuit and voltage drive. The common electrode voltage positive polarity, that is, the common electrode voltage Vcom1 is larger than the original common electrode voltage Vcom, that is, Vcom1>Vcom; The high-voltage positive sub-pixels and the low-voltage negative sub-pixels of the two-column sub-pixels and the third-column sub-pixels, that is, the green sub-pixel, cooperate with the common-electrode negative-polarity circuit and voltage drive. The common-electrode voltage is negative, that is, the common-electrode voltage Vcom2 is relative to the original The common electrode voltage Vcom is larger, that is, Vcom2<Vcom; and so on, the common electrode voltage circuit and drive for every two columns are based on high-voltage negative sub-pixels and low-voltage positive sub-pixels, or high-voltage positive sub-pixels and low-voltage negative sub-pixels. Common electrode circuit and voltage drive.

Correspondingly, after the step S20, the driving method of the display panel further includes the following steps:

Two adjacent sub-pixels in the same column are selected respectively, and the equivalent driving voltage of the high-voltage sub-pixel in the selected sub-pixel is driven to be greater than the equivalent driving voltage of the low-voltage sub-pixel in the selected sub-pixel.

It should be understood that, referring to FIG. 5, FIG. 5 is a schematic diagram of the first preset timing sequence of pixel driving in the driving method of the display panel of this application; the low voltage positive polarity driving signal Vgd=V1, V2, V3..., low voltage in the G row Negative polarity dynamic signal Vgd=V1', V2', V3'..., where (1, V2, V3...>Vcom, V1', V2', V3'...<Vcom). In the frame timing of Frame1, the low-voltage sub-pixel equivalent driving voltage VGd_1 is the voltage difference between the positive driving voltage V1 (V1>Vcom) and the positive common electrode Vcom2 (Vcom2>Vcom), that is, VGd_1= |V1-Vcom2|, the next adjacent high-voltage sub-pixel VGd_2 is the voltage difference between the negative driving voltage V1' (V1<Vcom) and the positive common electrode Vcom2 (Vcom2>Vcom), that is, VGd_2= |V1'-Vcom2|, so VGd_1<VGd_2. Similarly, the low-voltage sub-pixel VGd_3 and the high-voltage sub-pixel VGd_4 are driven in sequence. The equivalent driving voltage VGd_3 of the low-voltage sub-pixel is the positive driving voltage Vgd=V2 (V2>Vcom) and the positive common electrode Vcom2 (Vcom2>Vcom) VGd_3=|V2-Vcom2|, the next adjacent low-voltage sub-pixel VGd_4 is the negative driving voltage Vgd=V2'(V2'<Vcom) and the positive common electrode Vcom2(Vcom2>Vcom) ), that is, VGd_4=|V2'-Vcom2| so VGd_3<VGd_4, the subsequent VGd_5, VGd_6 and more VGd_n can be deduced by analogy, the target equivalent voltage of the high-voltage sub-pixel is greater than that of the low-voltage sub-pixel Target equivalent voltage.

Further, after the step of selecting any two adjacent pixel units in the column direction and obtaining the voltage states of the first adjacent sub-pixel unit and the second adjacent sub-pixel unit, the driving method of the display panel further includes the following steps :

When the first preset voltage and the second preset voltage meet the preset condition, the equivalent driving voltage of the high-voltage sub-pixel and the low-voltage sub-pixel in the selected sub-pixels is performed using a preset data driving signal. For driving, the preset data driving signal is an average signal of the driving signals of two adjacent sub-pixels in the original same column.

It can be understood that, referring to FIGS. 4 and 5, the equivalent voltages of VGd_1 and VGd_2 are driven by a positive driving voltage Vgd=V1 and a negative driving voltage Vgd=V1', and a positive driving voltage V1 and a negative driving voltage V1' It can be selected as the average signal of the original frame pixel signal Gd1 and Gd2 signal (in 8bit, the driving signal is 0~255 signal), that is, G1=(Gd1+Gd2)/2, the positive polarity corresponding to the G1 signal The driving voltage V1 and the negative driving voltage V1'. The equivalent voltages of VGd_3 and VGd_4 are driven by the positive driving voltage Vgd=V2 and the negative driving voltage Vgd=V2' respectively, and can be selected as the average signal of the original frame pixel signal Gd3 and Gd4 signal (in terms of 8bit driving signal) 0~255 signal), that is, G2=(Gd3+Gd4)/2, the G2 signal corresponds to the positive driving voltage V2 and the negative driving voltage V2'.

It should be noted that, referring to FIG. 4 and FIG. 6, FIG. 6 is a schematic diagram of the second preset timing of driving the Vrd pixel of the display panel driving method of the present application; the current timing is switched from the first preset timing to the second preset timing. When setting the time sequence, the first adjacent pixel unit is driven by a positive driving voltage, and the second adjacent pixel unit is driven by a negative driving voltage; at the current time sequence, it is the second preset In time sequence, the low-voltage negative sub-pixels and high-voltage positive sub-pixels (red sub-pixel R and blue sub-pixel B) of the first column of sub-pixels and the second column of sub-pixels cooperate with the common electrode positive circuit and voltage drive (common electrode) The voltage is positive, that is, the common electrode voltage Vcom1 is larger than the original common electrode voltage Vcom, that is, Vcom1>Vcom); the high-voltage positive sub-pixels and the low-voltage negative sub-pixels (G sub-pixels) of the second and third column sub-pixels , With the common common electrode negative polarity circuit and voltage drive (the common electrode voltage negative polarity, that is, the common electrode voltage Vcom2 is larger than the original common electrode voltage Vcom, that is, Vcom2<Vcom); and so on, the common electrode voltage circuit and drive for every two columns According to low-voltage negative sub-pixels and high-voltage positive sub-pixels or high-voltage positive sub-pixels and low-voltage negative sub-pixels, a common common electrode circuit and voltage drive are used.

It is understandable that when the current timing is switched from the first preset timing to the second preset timing, the common electrode voltage also cooperates with the polarity drive inversion to create the periodic voltage switching of the frame, that is, the common electrode The voltage Vcom1 becomes a positive driving voltage (the common electrode voltage is positive, that is, the common electrode voltage Vcom1 is larger than the original common electrode voltage Vcom, that is, Vcom1>Vcom). The common electrode voltage Vcom2 becomes a negative driving voltage (the common electrode voltage is negative, that is, the common electrode voltage Vcom2 is smaller than the original common electrode voltage Vcom, that is, Vcom2<Vcom). In addition, the low-voltage sub-pixels VGd_1, VGd_3, and VGd_5 are driven from a positive polarity to a negative polarity, and the high-voltage sub-pixels VGd_2, VGd_4, and VGd_6 are driven from a negative polarity to a positive polarity.

Further, before the step S20, the following steps are further included:

Selecting any two adjacent pixel units in the column direction to obtain the voltage states of the first adjacent sub-pixel unit and the second adjacent sub-pixel unit;

When the voltage state of the first adjacent sub-pixel unit is a low voltage and the voltage state of the second adjacent sub-pixel unit is a high voltage, the second sub-pixel in the first adjacent sub-pixel unit is A positive driving signal is used for driving, the first sub-pixel and the third sub-pixel in the first adjacent sub-pixel unit are driven by a negative driving signal, and the first sub-pixel in the second adjacent sub-pixel unit is driven. The two sub-pixels are driven by a negative driving signal, and the first sub-pixel and the third sub-pixel in the second adjacent sub-pixel unit are driven by a positive driving signal;

When the voltage state of the first adjacent sub-pixel unit is a high voltage, and the voltage state of the second adjacent sub-pixel unit is a low voltage, the second sub-pixel in the first adjacent sub-pixel unit is A negative driving signal is used for driving, the first sub-pixel and the third sub-pixel in the first adjacent sub-pixel unit are driven by a positive driving signal, and the first sub-pixel in the second adjacent sub-pixel unit is driven. The two sub-pixels are driven by a positive driving signal, and the first sub-pixel and the third sub-pixel in the second adjacent sub-pixel unit are driven by a negative driving signal.

It can be understood that, referring to FIG. 6, the common electrode voltage Vcom1 corresponding to the low voltage sub-pixels VRd_1, VRd_3, VRd_5 and the high-voltage sub-pixels VRd_2, VRd_4, VRd_6 of the R row sub-pixels is a negative driving voltage, and the common electrode voltage is negative. The common electrode voltage Vcom1 is smaller than the original common electrode voltage Vcom, that is, Vcom1<Vcom. Positive driving voltage signal Vrd=V1, V2, V3..... of R row, negative driving voltage signal Vrd=V1', V2', V3'..., among which 1, V2, V3...>Vcom, V1', V2 ', V3'...<Vcom. In the frame timing of Frame1, the low-voltage sub-pixel equivalent driving voltage VRd_1 is the voltage difference between the negative driving voltage Vrd=V1' (V1'<Vcom) and the negative common electrode Vcom1 (Vcom1<Vcom), which is VRd_1=|V1'-Vcom1|, the next adjacent high-voltage sub-pixel VRd_2 is the voltage difference between the positive driving voltage Vrd=V1 (V1>Vcom) and the negative common electrode Vcom1 (Vcom1<Vcom), that is VGd_2=|V1-Vcom1|, so VGd_1<VGd_2. Similarly, the low voltage VGd_3 and the high voltage sub-pixel VGd_4 are driven in sequence. The equivalent driving voltage VRd_3 for the low-voltage sub-pixel is the negative driving voltage Vrd=V2'(V2'<Vcom) and the negative common electrode Vcom1(Vcom1< Vcom), that is, VGd_3=|V2'-Vcom1|, the next adjacent low-voltage sub-pixel VGd_4 is the positive driving voltage Vgd=V2 (V2>Vcom) and the negative common electrode Vcom1(Vcom1< Vcom), that is, VGd_4=|V2-Vcom1|, so VGd_3<VGd_4.

In this embodiment, when the current timing is the first preset timing, the first and third sub-pixels in the first row of pixel units and the second row of pixel units are high-voltage positive sub-pixels and low-voltage negative sub-pixels. The negative common electrode voltage of the first preset voltage is negatively driven, and the second preset is used for the second sub-pixel high-voltage negative sub-pixels and low-voltage positive sub-pixels in the second row of pixel units and the third row of pixel units. The positive common electrode voltage of the voltage is positively driven; any two adjacent pixel units are selected, and the second sub-pixel in the selected first adjacent pixel unit and the second sub-pixel in the selected second adjacent pixel unit are selected. Pixels are all driven by a first equivalent voltage, the first equivalent voltage being the voltage difference between the initial driving voltage and the positive common electrode voltage; and switching from the first preset timing to the first in the current timing In the second preset timing, the first adjacent pixel unit is driven by a positive driving voltage, the second adjacent pixel unit is driven by a negative driving voltage, and the high-voltage pixels and the low-voltage pixels are interleaved according to The common electrode voltage is driven by the positive and negative polarity, and the common electrode voltage is arranged according to the column direction by the interleaved positive and negative polarity driving arrangement, which solves the visual role deviation and avoids the increase in power consumption, temperature rise and panel brightness reduction caused by increased drive amplitude The defects of, improve the display effect and enhance the user experience.

In addition, an embodiment of the present application also provides a driving device for a display panel. As shown in FIG. 7, the display panel includes a display array, the display array includes pixel units arranged in an array, which are alternately arranged by first pixel units and second pixel units; the driving device of the display panel includes:

The common electrode driving circuit 110 is configured to use scanning of at least three columns of pixel units as a driving period, and in the current driving period, the common electrode of each sub-pixel in the pixel unit is driven with a preset voltage;

The common electrode driving circuit 110 is further configured to drive the high-voltage sub-pixels in the pixel unit with positive polarity when the preset voltage is a negative-polarity driving voltage, and drive the low-voltage sub-pixels in the pixel unit The pixels are driven with negative polarity, and the preset voltage is less than the reference voltage;

The inversion circuit 120 is configured to periodically invert the preset voltage when the data driving signal input by the receiving data driving circuit is inverted;

The common electrode driving circuit 110 is further configured to drive the high-voltage sub-pixels in the pixel unit with a negative polarity when the preset voltage after inversion is a positive driving voltage, and drive the low voltage in the pixel unit. The voltage sub-pixels are driven by positive polarity, and the preset voltage after the inversion is greater than the reference voltage.

As shown in FIG. 8, the driving device for the display panel further includes a display array 100 and a driving circuit 200. The driving circuit 200 may include a scanning unit 210 and a driving unit 220. The scanning unit 210 is configured to output scanning signals, generally one by one. The row scans the pixel unit, and the driving unit 220 outputs a driving signal so that the pixel unit receives driving data for display when the pixel unit is scanned.

The driving circuit 200 can refer to the above-mentioned embodiment. After this process, the common electrodes of the sub-pixels in the pixel unit can be driven with the same driving voltage, and the high and low voltage sub-pixels can be driven in different driving methods, thereby Solve the visual role deviation, and use the common electrode to drive correspondingly, thereby reducing the work of the driver chip, reducing the power consumption of the driver chip and the risk of temperature increase. It does not need to double the metal traces and driver devices to drive the sub-pixels. To achieve the purpose of saving costs.

The above are only optional embodiments of this application, and do not limit the scope of this application. Any equivalent structure or equivalent process transformation made by using the description and drawings of this application, or directly or indirectly applied to other related technologies In the same way, all fields are included in the scope of patent protection of this application.

Claims

A method for driving a display panel, wherein the display panel includes a display array, the display array includes pixel units arranged in an array, and the pixel units include first sub-pixels, second sub-pixels, and second sub-pixels in a row direction. Three sub-pixels, the three sub-pixels of each pixel unit are aligned in a column according to the sequence of arrangement; the driving method includes:

When the current time sequence is the first preset time sequence, the high-voltage positive polarity sub-pixels and the low-voltage negative polarity sub-pixels in the first row of pixel units and the second row of pixel units are negatively charged using the negative common electrode voltage of the first preset voltage Positive driving is performed on the high-voltage negative sub-pixels and the low-voltage positive sub-pixels in the second row of pixel units and the third row of pixel units using a positive common electrode voltage of a second preset voltage for positive driving, wherein A preset voltage is less than the original common electrode voltage, and the second preset voltage is greater than the original common electrode voltage;

Periodically inverting the first preset voltage and the second preset voltage when the data driving signal input by the data driving circuit is received and time sequence is reversed;

When the current timing is switched from the first preset timing to the second preset timing, the first preset is used for the high-voltage negative sub-pixels and the low-voltage positive sub-pixels of the first row of pixel units and the second row of pixel units. Set the positive common electrode voltage of the voltage to drive the positive polarity, and use the negative common electrode voltage of the second preset voltage for the high-voltage positive sub-pixels and low-voltage negative sub-pixels in the second row of pixel units and the third row of pixel units Drive negative polarity.
2. The driving method of the display panel according to claim 1, wherein when the data driving signal input by the data driving circuit is received and the timing is reversed, the first preset voltage and the second preset voltage are performed Before the periodic inversion, the driving method of the display panel further includes:

Selecting any two adjacent pixel units in the column direction to obtain the voltage states of the first adjacent sub-pixel unit and the second adjacent sub-pixel unit;

When the voltage state of the first adjacent sub-pixel unit is a low voltage and the voltage state of the second adjacent sub-pixel unit is a high voltage, the second sub-pixel in the first adjacent sub-pixel unit is Driving with a positive driving signal, and driving a second sub-pixel in the second adjacent sub-pixel unit with a negative driving signal;

When the voltage state of the first adjacent sub-pixel unit is a high voltage, and the voltage state of the second adjacent sub-pixel unit is a low voltage, the second sub-pixel in the first adjacent sub-pixel unit is A negative driving signal is used for driving, and the second sub-pixel in the second adjacent sub-pixel unit is driven by a positive driving signal.
3. The driving method of the display panel according to claim 2, wherein after said selecting any two adjacent pixel units in the column direction, obtaining the voltage states of the first adjacent sub-pixel unit and the second adjacent sub-pixel unit, The driving method of the display panel further includes:

When the first preset voltage and the second preset voltage meet the preset condition, the equivalent driving voltage of the high-voltage sub-pixel and the low-voltage sub-pixel in the selected sub-pixels is performed using a preset data driving signal. For driving, the preset data driving signal is an average signal of the driving signals of two adjacent sub-pixels in the original same column.
4. The method for driving a display panel according to claim 1, wherein when the data driving signal input by the data driving circuit is received and the timing is reversed, the first preset voltage and the second preset voltage are performed After the periodic inversion, the driving method of the display panel further includes:

Two adjacent sub-pixels in the same column are selected respectively, and the equivalent driving voltage of the high-voltage sub-pixel in the selected sub-pixel is driven to be greater than the equivalent driving voltage of the low-voltage sub-pixel in the selected sub-pixel.
The method for driving a display panel according to claim 1, wherein the first sub-pixel, the second sub-pixel, and the third sub-pixel are a red sub-pixel, a green sub-pixel, and a blue sub-pixel in sequence, The red sub-pixels, green sub-pixels, and blue sub-pixels are sub-pixels of different polarity.
4. The driving method of the display panel according to claim 2, wherein when the data driving signal input by the data driving circuit is received and the timing is reversed, the first preset voltage and the second preset voltage are performed After the periodic inversion, the driving method of the display panel further includes:

Two adjacent sub-pixels in the same column are selected respectively, and the equivalent driving voltage of the high-voltage sub-pixel in the selected sub-pixel is driven to be greater than the equivalent driving voltage of the low-voltage sub-pixel in the selected sub-pixel.
4. The method for driving a display panel according to claim 1, wherein when the data driving signal input by the data driving circuit is received and the timing is reversed, the first preset voltage and the second preset voltage are performed After the periodic reversal, the driving method further includes:

When the current timing is switched from the first preset timing to the second preset timing, the first preset is used for the high-voltage negative sub-pixels and the low-voltage positive sub-pixels of the first row of pixel units and the second row of pixel units. Set the positive common electrode voltage of the voltage to drive the positive polarity, and use the negative common electrode voltage of the second preset voltage for the high-voltage positive sub-pixels and low-voltage negative sub-pixels in the second row of pixel units and the third row of pixel units Performing negative polarity driving, wherein the first preset voltage after the inversion is greater than the original common electrode voltage, and the second preset voltage after the inversion is less than the original common electrode voltage.
7. The driving method of the display panel according to claim 7, wherein when the data driving signal input by the data driving circuit is received and the timing is reversed, the first preset voltage and the second preset voltage are performed Before the periodic inversion, the driving method of the display panel further includes:

Selecting any two adjacent pixel units in the column direction to obtain the voltage states of the first adjacent sub-pixel unit and the second adjacent sub-pixel unit;

When the voltage state of the first adjacent sub-pixel unit is a low voltage and the voltage state of the second adjacent sub-pixel unit is a high voltage, the second sub-pixel in the first adjacent sub-pixel unit is A positive driving signal is used for driving, the first sub-pixel and the third sub-pixel in the first adjacent sub-pixel unit are driven by a negative driving signal, and the first sub-pixel in the second adjacent sub-pixel unit is driven. The two sub-pixels are driven by a negative driving signal, and the first sub-pixel and the third sub-pixel in the second adjacent sub-pixel unit are driven by a positive driving signal;

When the voltage state of the first adjacent sub-pixel unit is a high voltage, and the voltage state of the second adjacent sub-pixel unit is a low voltage, the second sub-pixel in the first adjacent sub-pixel unit is A negative driving signal is used for driving, the first sub-pixel and the third sub-pixel in the first adjacent sub-pixel unit are driven by a positive driving signal, and the first sub-pixel in the second adjacent sub-pixel unit is driven. The two sub-pixels are driven by a positive driving signal, and the first sub-pixel and the third sub-pixel in the second adjacent sub-pixel unit are driven by a negative driving signal.
A driving device for a display panel, wherein the display panel includes a display array, the display array includes pixel units arranged in an array, and the first pixel unit and the second pixel unit are alternately arranged; the display panel The driving device includes: a display array, including pixel units arranged in an array, the pixel units including a first sub-pixel, a second sub-pixel, and a third sub-pixel in the row direction, and the three sub-pixels of each pixel unit are arranged according to the arrangement The sequence is aligned on the column; the driving device of the display panel includes:

The common electrode driving circuit is set to take the scanning of at least three columns of pixel units as a driving period, and the common electrode of each sub-pixel in the pixel unit is driven by a preset voltage in the current driving period.
9. The driving device of the display panel according to claim 9, wherein the driving device of the display panel further comprises: an inversion circuit configured to invert the preset data when the data driving signal input by the data driving circuit is inverted The voltage is periodically reversed.
10. The driving device of the display panel according to claim 10, wherein the common electrode driving circuit is further configured to use high-voltage sub-pixels in the pixel unit when the preset voltage is a negative driving voltage Positive polarity driving, the low-voltage sub-pixels in the pixel unit are driven with negative polarity, and the preset voltage is less than the reference voltage.
11. The driving device of the display panel according to claim 11, wherein the common electrode driving circuit is further configured to reduce the high voltage sub in the pixel unit when the inverted preset voltage is a positive driving voltage. The pixels are driven with a negative polarity, the low-voltage sub-pixels in the pixel unit are driven with a positive polarity, and the inverted preset voltage is greater than the reference voltage.
A display device, wherein the display device includes a display panel and a display device of the display panel, the display panel includes a display array, the display array includes pixel units arranged in an array, and the pixel units include The first sub-pixel, the second sub-pixel, and the third sub-pixel in the row direction, and the three sub-pixels of each pixel unit are aligned in columns according to the sequence of arrangement;

The driving device of the display panel includes a processor and the driving device of the display panel includes a processor and a memory, the memory stores executable instructions, the processor executes the executable instructions, and the executable instructions include:

When the current time sequence is the first preset time sequence, the high-voltage positive polarity sub-pixels and the low-voltage negative polarity sub-pixels in the first row of pixel units and the second row of pixel units are negatively charged using the negative common electrode voltage of the first preset voltage Positive driving is performed on the high-voltage negative sub-pixels and the low-voltage positive sub-pixels in the second row of pixel units and the third row of pixel units using a positive common electrode voltage of a second preset voltage for positive driving, wherein A preset voltage is less than the original common electrode voltage, and the second preset voltage is greater than the original common electrode voltage;

Periodically inverting the first preset voltage and the second preset voltage when the data driving signal input by the data driving circuit is received and time sequence is reversed;

When the current timing is switched from the first preset timing to the second preset timing, the first preset is used for the high-voltage negative sub-pixels and the low-voltage positive sub-pixels of the first row of pixel units and the second row of pixel units. Set the positive common electrode voltage of the voltage to drive the positive polarity, and use the negative common electrode voltage of the second preset voltage for the high-voltage positive sub-pixels and low-voltage negative sub-pixels in the second row of pixel units and the third row of pixel units Drive negative polarity.
The display device of claim 13, wherein the processor executes the executable instruction, and the executable instruction comprises:

Selecting any two adjacent pixel units in the column direction to obtain the voltage states of the first adjacent sub-pixel unit and the second adjacent sub-pixel unit;

When the voltage state of the first adjacent sub-pixel unit is a low voltage and the voltage state of the second adjacent sub-pixel unit is a high voltage, the second sub-pixel in the first adjacent sub-pixel unit is Driving with a positive driving signal, and driving a second sub-pixel in the second adjacent sub-pixel unit with a negative driving signal;

When the voltage state of the first adjacent sub-pixel unit is a high voltage, and the voltage state of the second adjacent sub-pixel unit is a low voltage, the second sub-pixel in the first adjacent sub-pixel unit is A negative driving signal is used for driving, and the second sub-pixel in the second adjacent sub-pixel unit is driven by a positive driving signal.
The display device of claim 13, wherein the processor executes the executable instruction, and the executable instruction comprises:

When the first preset voltage and the second preset voltage meet the preset condition, the equivalent driving voltage of the high-voltage sub-pixel and the low-voltage sub-pixel in the selected sub-pixels is performed using a preset data driving signal. For driving, the preset data driving signal is an average signal of the driving signals of two adjacent sub-pixels in the original same column.
The display device of claim 13, wherein the processor executes the executable instruction, and the executable instruction comprises:

Two adjacent sub-pixels in the same column are selected respectively, and the equivalent driving voltage of the high-voltage sub-pixel in the selected sub-pixel is driven to be greater than the equivalent driving voltage of the low-voltage sub-pixel in the selected sub-pixel.
The display device of claim 13, wherein the processor executes the executable instruction, and the executable instruction comprises:

The first sub-pixel, the second sub-pixel, and the third sub-pixel are set to be a red sub-pixel, a green sub-pixel, and a blue sub-pixel, the red sub-pixel, the green sub-pixel, and the blue sub-pixel It is a sub-pixel of different polarity.
The display device of claim 13, wherein the processor executes the executable instruction, and the executable instruction comprises:

When the current timing is switched from the first preset timing to the second preset timing, the first preset is used for the high-voltage negative sub-pixels and the low-voltage positive sub-pixels of the first row of pixel units and the second row of pixel units. Set the positive common electrode voltage of the voltage to drive the positive polarity, and use the second preset voltage negative common electrode voltage for the high-voltage positive sub-pixels and low-voltage negative sub-pixels in the second row of pixel units and the third row of pixel units Performing negative polarity driving, wherein the first preset voltage after the inversion is greater than the original common electrode voltage, and the second preset voltage after the inversion is less than the original common electrode voltage.
The display device of claim 13, wherein the processor executes the executable instruction, and the executable instruction comprises:

Selecting any two adjacent pixel units in the column direction to obtain the voltage states of the first adjacent sub-pixel unit and the second adjacent sub-pixel unit;

When the voltage state of the first adjacent sub-pixel unit is a low voltage and the voltage state of the second adjacent sub-pixel unit is a high voltage, the second sub-pixel in the first adjacent sub-pixel unit is A positive driving signal is used for driving, the first sub-pixel and the third sub-pixel in the first adjacent sub-pixel unit are driven by a negative driving signal, and the first sub-pixel in the second adjacent sub-pixel unit is driven. The two sub-pixels are driven by a negative driving signal, and the first sub-pixel and the third sub-pixel in the second adjacent sub-pixel unit are driven by a positive driving signal.
The display device of claim 19, wherein the processor executes the executable instruction, and the executable instruction comprises:

When the voltage state of the first adjacent sub-pixel unit is a high voltage, and the voltage state of the second adjacent sub-pixel unit is a low voltage, the second sub-pixel in the first adjacent sub-pixel unit is A negative driving signal is used for driving, the first sub-pixel and the third sub-pixel in the first adjacent sub-pixel unit are driven by a positive driving signal, and the first sub-pixel in the second adjacent sub-pixel unit is driven. The two sub-pixels are driven by a positive driving signal, and the first sub-pixel and the third sub-pixel in the second adjacent sub-pixel unit are driven by a negative driving signal. To