A driving circuit, a driving method and a display device of a display panel

Abstract

The embodiments of the present application disclose a driving circuit, a driving method and a display device of a display panel, which are used in the field of display technology. In the driving circuit of the display panel, a plurality of display pixels are arranged in rows and columns on the display panel; each column of display pixels is connected to a data line, and a plurality of data lines are respectively connected to a driving module; a plurality of display pixels include a plurality of display partitions, and a control switch is provided on the data line corresponding to the partition boundary of each display partition; the control switch is used to conduct the data line between the target display partition and the driving module, and disconnect the data line on the partition boundary of the target display partition away from the driving module, so as to power on the target display partition, and the target display partition is the display partition where the display pixels to be lit are located. By disconnecting the data line on the partition boundary of the target display partition away from the driving module, it is possible to avoid powering on the display partition on the side of the target display partition away from the driving module, thereby effectively reducing the extra power consumption.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of display technology, and in particular to a driving circuit and a driving method of a display panel and a display device. Background Art

[0002] Display panels (Micro LED / OLED / TFT, etc.) can make the display structure design thinner, smaller, and more arrayed, and integrate a high-density, tiny-sized display array on a display panel.

[0003] The display panel uses a matrix method to scan rows and columns (gate source), that is, turn on a column of TFTs, and then charge the display pixels of this column. At this time, the parasitic RC on the data line will be charged additionally, especially the larger the size, the more obvious the RC loading. When a display pixel is to be driven to light up, it is necessary to charge the RC load corresponding to the display pixel through the data line corresponding to the display pixel; and the longer the data line, the heavier the parasitic RC load of the data line itself. When charging the RC load corresponding to the display pixel, the RC load on the data line itself will be charged, which is likely to increase additional power consumption. Summary of the invention

[0004] The embodiments of the present application provide a driving circuit, a driving method and a display device of a display panel, which can effectively reduce additional power consumption.

[0005] The embodiment of the present application provides a driving circuit of a display panel, including: a plurality of display pixels, a driving module, a plurality of control switches and a plurality of data lines;

[0006] The plurality of display pixels are arranged in rows and columns on the display panel; each column of the display pixels is connected to one of the data lines, and the plurality of data lines are respectively connected to the driving modules;

[0007] The plurality of display pixels include a plurality of display partitions, and the control switch is arranged on a data line corresponding to a partition boundary of each of the display partitions;

[0008] The control switch is used to turn on the data line between the target display partition and the driving module, and disconnect the data line on the partition boundary of the target display partition away from the driving module to power on the target display partition, where the display pixels to be lit are located.

[0009] Further, the driving module includes a first driving unit and a second driving unit;

[0010] One end of each of the data lines is connected to the first driving unit, and the other end is connected to the second driving unit;

[0011] The driving circuit further includes: a counting module;

[0012] The counting module is used to determine the driving unit closest to the target display partition from the first driving unit and the second driving unit;

[0013] The control switch is specifically used to conduct the data line between the target display partition and the closest driving unit, and disconnect the data line on the target display partition away from the partition boundary of the closest driving unit.

[0014] Furthermore, the display partition includes: a plurality of rows of display pixels, and the number of partitions of the display partition is greater than a preset threshold.

[0015] Furthermore, the partition boundaries of the display partitions are set as partition boundaries distributed in a zigzag shape on adjacent rows of display pixels.

[0016] Furthermore, the driving circuit further includes: a control signal module;

[0017] The control signal module is connected to the driving module and is used to send a timing control signal to the driving module;

[0018] The driving module is used for triggering the data line based on the timing control signal.

[0019] Furthermore, the control switch includes a thin film transistor or a field effect transistor.

[0020] Furthermore, the driving circuit further includes: a partition control module;

[0021] The first pole of the control switch is connected to a display pixel corresponding to a partition boundary of the display partition, and the second pole of the control switch is connected to another display pixel corresponding to a partition boundary of the display partition;

[0022] The partition control module is connected to the conduction control end of the control switch.

[0023] Further, the partition control module includes a plurality of control lines;

[0024] The conduction control end of the control switch on the same partition boundary of the display partition is connected to one of the control lines.

[0025] The embodiment of the present application further provides a method for driving a display panel, wherein the display panel includes the driving circuit as described above, and is characterized by comprising:

[0026] Determining, on the display panel, a target display partition where display pixels to be lit are located;

[0027] The data line between the target display partition and the driving module is turned on, and the data line on the target display partition away from the partition boundary of the driving module is turned off.

[0028] An embodiment of the present application further provides a display device, comprising the above-mentioned driving circuit.

[0029] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0030] In the driving circuit of the display panel, multiple display pixels are arranged in rows and columns on the display panel; each column of display pixels is connected to a data line, and multiple data lines are respectively connected to the driving module; multiple display pixels include multiple display partitions, and a control switch is set on the data line corresponding to the partition boundary of each display partition; the control switch is used to conduct the data line between the target display partition and the driving module, and disconnect the data line on the partition boundary of the target display partition away from the driving module to power on the target display partition, and the target display partition is the display partition where the display pixel to be lit is located. It can be seen that by disconnecting the data line on the partition boundary of the target display partition away from the driving module, it is possible to avoid powering on the display partition on the side of the target display partition away from the driving module, reduce the charging of the RC load on the data line itself, and effectively reduce additional power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0032] Figure 1 A driving circuit of a display panel disclosed in an embodiment of the present application;

[0033] Figure 2 A driving circuit with two driving units disclosed in an embodiment of the present application;

[0034] Figure 3 Another display panel driving circuit disclosed in an embodiment of the present application. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] In the description of the embodiments of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application.

[0037] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0038] In an existing display panel, when a certain display pixel is to be driven to light up, the RC load corresponding to the display pixel needs to be charged through the data line corresponding to the display pixel; and the data line contains multiple display pixels, each display pixel has a corresponding RC load, and the data line itself also has an RC load. In particular, the larger the size, the longer the data line, the heavier the RC load of the data line, and the more power consumed when the data line voltage changes. When charging the RC load corresponding to the display pixel, the RC load of the data line itself will be charged, which is likely to increase additional power consumption. Therefore, an embodiment of the present application provides a driving circuit for a display panel that can effectively reduce additional power consumption, such as Figure 1 As shown, the details are as follows:

[0039] In the embodiment of the present application, the driving circuit of the display panel includes: a plurality of display pixels, a driving module, a plurality of control switches and a plurality of data lines; the display pixels are display pixels corresponding to the red, green and blue pigments (R+, R-, G+, G-, B+ and B-) in the figure, each display pixel includes an RC load (RC loading), and when the display pixel is lit, the corresponding RC load needs to be charged; the driving module can be an integrated circuit chip (IC Back Side) or a single-chip microcomputer, which is not limited here. The data lines are S1 to Sn in the figure.

[0040] Among them, multiple display pixels are arranged in rows and columns on the display panel, each column of display pixels is connected to a data line, and multiple data lines are respectively connected to the driving module. The driving module is used to light up the corresponding display pixels on the data line by triggering the data line. In the embodiment of the present application, the multiple display pixels include multiple display partitions, that is, the adjacent multiple display pixels on the display panel can be divided into a display partition, and the number of display pixels contained in each display partition is not limited. For example, two adjacent rows or three adjacent rows of display pixels can be divided into a display partition, which is not specifically limited here. A control switch is provided on the data line corresponding to the partition boundary of each display partition, that is, a control switch is provided on the partition boundary of the display partition; the control switch can be closed or opened, and when the control switch is opened, the corresponding data line is disconnected, and when the control switch is closed, the corresponding data line is turned on.

[0041] The control switch is used to conduct the data line between the target display partition and the driving module, and disconnect the data line on the partition boundary of the target display partition away from the driving module to energize the target display partition, and the target display partition is the display partition where the display pixels to be lit are located. It can be understood that there is a partition boundary of the target display partition and a plurality of partition boundaries corresponding to other display partitions between the target display partition and the driving module, and a control switch is arranged on the data lines corresponding to these partition boundaries, and the control switch is used to conduct the data lines corresponding to these partition boundaries to energize the target display partition and light up the target display partition. After disconnecting the data line on the partition boundary of the target display partition away from the driving module, the other display partitions on the target display partition away from the driving module will not receive the electric energy provided by the driving module, and the original potential state will be preserved, that is, the display pixels in the other display partitions and the RC load of this section of the data line do not need to be charged. For example, when it is necessary to light up the display pixels in row L6, the control switch between row L6 and the driving module can be closed, and the control switch on the partition boundary above L3 can be disconnected, so as to save the extra power required to be sent due to the RC load of the display pixels in rows L1, L2 and L3, and the saved power can be calculated based on the RC load.

[0042] It can be seen that in the driving circuit of the display panel of the embodiment of the present application, multiple display pixels are arranged in rows and columns on the display panel; each column of display pixels is connected to a data line, and multiple data lines are respectively connected to the driving module; multiple display pixels include multiple display partitions, and a control switch is set on the data line corresponding to the partition boundary of each display partition; the control switch is used to conduct the data line between the target display partition and the driving module, and disconnect the data line on the partition boundary of the target display partition away from the driving module to power on the target display partition, and the target display partition is the display partition where the display pixel to be lit is located. It can be seen that by disconnecting the data line on the partition boundary of the target display partition away from the driving module, it is possible to avoid powering on the display partition on the side of the target display partition away from the driving module, reduce the charging of the RC load on the data line itself, and effectively reduce additional power consumption.

[0043] Furthermore, the driving module may include a plurality of driving units, and the display pixels in the display panel may be provided with electrical energy by the plurality of driving units; Figure 2 As shown, the driving module includes a first driving unit and a second driving unit, wherein one end of each data line is connected to the first driving unit, and the other end is connected to the second driving unit, that is, the display pixels on each data line are provided with power through two driving units. The driving circuit of the embodiment of the present application also includes: a counting module; the counting module is used to determine the driving unit closest to the target display partition from the first driving unit and the second driving unit, that is, the distance from the target display partition to the first driving unit and the distance from the target display partition to the second driving unit are determined by the counting module, and the driving unit closest to the target display partition is determined. The distance can be a cross-zone distance or a cross-pixel distance, that is, the number of display partitions separated, or the number of display pixels separated, which is not specifically limited here.

[0044] The counting module may be a counter that counts the number of columns and rows of pixels currently, or a gate signal counting device, which is not limited here. When a predetermined counter (Ln, n is any integer) is counted, a signal is sent to the control switch to distinguish the display area. The counting module can determine the row and column of the display pixel that needs to be lit, and then determine the drive unit closest to the display pixel.

[0045] The control switch is specifically used to conduct the data line between the target display partition and the closest driving unit, and disconnect the data line on the target display partition away from the partition boundary of the driving unit. It can be understood that the number of display partitions included between the driving unit and the target display partition is less than the number of partitions included between another driving unit outside the driving unit and the target display partition, that is, the number of illuminated display partitions can be reduced as much as possible, further saving additional power consumption.

[0046] Further, the display partition includes multiple rows of display pixels, and the number of partitions of the display partition is greater than a preset threshold, which may be 20 partitions or 30 partitions, which is not specifically limited here. That is, the display pixels are divided into more display partitions as much as possible, so that each display partition only includes a small number of display pixels, such as each row of display pixels can be used as a display partition, further saving power consumption.

[0047] Further, such as Figure 3 As shown, in order to avoid a sense of lines in the visual effect when the partition boundary of the display partition is truncated on the same horizontal line, in the embodiment of the present application, the partition boundary of the display partition is set to be a partition boundary distributed in a zigzag shape on adjacent multiple rows of display pixels, that is, the partition boundary of the display partition spans across multiple adjacent rows of display pixels and is distributed in a wall-like shape in the row direction of the display pixels. For example, the partition boundary of the display partition can span two rows of display pixels, and the partition boundary is a sine wave with a period of two display pixels. The partition boundary is set to a zigzag wiring to avoid a sense of lines in the visual effect when it is truncated on the same horizontal line.

[0048] Furthermore, the driving circuit also includes: a control signal module, which can be a gate signal control module (GOA, Gate control signal); the control signal module is connected to the driving module and is used to send a timing control signal to the driving module; the timing control signal includes a gating time point of each data line and a corresponding gating duration; the driving module is used to trigger the data line based on the timing control signal. That is, the driving module can gating the data line within the corresponding timing based on the timing control signal to light up the display pixels on the data line. Among them, one data line can be gating at a time, or multiple data lines can be gating at a time, and the time interval between each gating is short to obtain a better visual effect.

[0049] Further, the control switch on the partition boundary of the display partition includes: a thin film transistor (TFT) or a metal oxide semiconductor (MOS), which is not limited here. In an practicable manner, the TFT circuit on the display panel can be used as a control switch to save switch cost.

[0050] Further, the driving circuit also includes: a partition control module; wherein the control switch includes a first pole, a second pole and a conduction control terminal, and the control switch can be turned on by driving the conduction control terminal of the control switch. When the control switch is turned on, the first pole of the control switch and the second pole of the control switch form a current path. Wherein, the first pole of the control switch is connected to a display pixel corresponding to the partition boundary of the display partition, and the second pole of the control switch is connected to another display pixel corresponding to the partition boundary of the display partition, that is, the first pole and the second pole of the control switch are connected to the data line corresponding to the partition boundary. The partition control module is connected to the conduction control terminal of the control switch, and the partition control module controls the conduction control terminal to light up the target display partition. It can be understood that the partition control module performs the same control operation on the control switches on the same partition boundary, that is, the control switches on the same partition boundary are turned on at the same time, or the control switches on the same partition boundary are turned off at the same time.

[0051] Furthermore, the partition control module includes a plurality of control lines; the conduction control end of the control switch on the same partition boundary of the display partition is connected to a control line. At this time, the partition control module can perform the same control operation on the control switch on the same partition boundary through the control line; for example, when the control switch is an NMOS tube, the partition control module can trigger a high-level signal through the control line to turn on the NMOS tube on the same partition boundary, and trigger a low-level signal through the control line to turn off the NMOS tube on the same partition boundary. In a specific implementation, the functions of the first and second electrodes of these control switches can be interchangeable depending on the transistor type and the input signal, and no specific distinction is made here. Specifically, the first electrode of the control switch can be a source electrode and the second electrode can be a drain electrode, or the first electrode can be a drain electrode and the second electrode can be a source electrode, and no specific distinction is made here.

[0052] The embodiment of the present application also provides a method for driving a display panel, the display panel includes the driving circuit as described above, including: determining the target display partition where the display pixels to be lit are located on the display panel; it can be understood that the display pixels on the display panel can be divided into multiple display partitions, and the target display partition where the display pixels to be lit are located can be determined from the multiple display partitions. Then, the data line between the target display partition and the driving module is turned on, so that the power on the driving module is transmitted to the target display partition through the data line, and the target display partition is lit; and the data line on the partition boundary of the target display partition away from the driving module is disconnected, so that other display partitions on the target display partition away from the driving module side cannot receive the power of the driving module, effectively avoiding additional power consumption.

[0053] The embodiment of the present application further provides a display device, which includes the above-mentioned driving circuit. The display device can be an electronic display screen or a computer, etc., which is not specifically limited here.

[0054] In the present invention, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more, unless otherwise clearly defined.

[0055] The above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application are described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and description of the embodiments of the present application.

Claims

1. A driving circuit for a display panel, characterized in that: include: A plurality of display pixels, a driving module, a plurality of control switches and a plurality of data lines; A plurality of display pixels are arranged in rows and columns on the display panel; Each column of the display pixels is connected to one of the data lines, and a plurality of the data lines are respectively connected to the driving modules; The plurality of display pixels include a plurality of display partitions, and the control switch is arranged on a data line corresponding to a partition boundary of each of the display partitions; The control switch is used to conduct the data line between the target display partition and the driving module, and disconnect the data line on the target display partition away from the partition boundary of the driving module, so as to power on the target display partition, wherein the target display partition is the display partition where the display pixels to be lit are located; The driving module includes a first driving unit and a second driving unit; One end of each of the data lines is connected to the first driving unit, and the other end is connected to the second driving unit; The driving circuit further includes: a counting module; The counting module is used to determine the driving unit closest to the target display partition from the first driving unit and the second driving unit; The control switch is specifically used to switch on the data line between the target display partition and the closest driving unit, and to switch off the data line on the partition boundary of the target display partition away from the closest driving unit.

2. The driving circuit according to claim 1, characterized in that: The display partition includes: a plurality of rows of display pixels, and the number of partitions of the display partition is greater than a preset threshold.

3. The driving circuit according to claim 1, characterized in that: The partition boundaries of the display partitions are set as partition boundaries distributed in a zigzag shape on adjacent rows of display pixels.

4. The driving circuit according to claim 1, characterized in that: The driving circuit further includes: a control signal module; The control signal module is connected to the driving module and is used to send a timing control signal to the driving module; The driving module is used for triggering the data line based on the timing control signal.

5. The driving circuit according to claim 1, characterized in that: The control switch includes a thin film transistor or a field effect transistor.

6. The driving circuit according to claim 1, characterized in that: The driving circuit further includes: a partition control module; The first pole of the control switch is connected to a display pixel corresponding to a partition boundary of the display partition, and the second pole of the control switch is connected to another display pixel corresponding to a partition boundary of the display partition; The partition control module is connected to the conduction control end of the control switch.

7. The driving circuit according to claim 6, characterized in that: The partition control module includes a plurality of control lines; The conduction control end of the control switch on the same partition boundary of the display partition is connected to one of the control lines.

8. A method for driving a display panel, the display panel comprising a driving circuit according to any one of claims 1 to 7, characterized in that: include: Determining, on the display panel, a target display partition where display pixels to be lit are located; The data line between the target display partition and the driving module is turned on, and the data line on the target display partition away from the partition boundary of the driving module is turned off.

9. A display device, characterized in that: The driving circuit comprises the driving circuit according to any one of claims 1 to 7.

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