Display panel driving method, device and display device

Abstract

The present application proposes a driving method, device and display device for a display panel, wherein the timing control module of the driving method generates a row driving control signal according to the received data to be displayed, thereby further generating a column driving control signal according to the row driving control signal and the data to be displayed. Thus, for each light-emitting diode on an odd-numbered row line, the start time of light emission can be controlled by the column driving control signal, and the end time of light emission can be controlled by the row driving control signal. For each light-emitting diode on an even-numbered row line, the start time of light emission can be controlled by the row driving control signal, and the end time of light emission can be controlled by the column driving control signal. That is, whether each light-emitting diode on each row line is lit and the lighting duration can be jointly controlled by the row driving control signal and the column driving control signal, which can reduce the switching frequency of high and low levels in the column driving control signal without changing the row driving control signal, thereby effectively reducing power consumption.

Description

Technical Field

[0001] The present application relates to the technical field of light emitting diodes, and in particular to a driving method and device for a display panel and a display device. Background Art

[0002] Currently, in Mini LED (sub-millimeter light-emitting diode) display panels, the anodes of each row of LEDs (light-emitting diodes) are connected together horizontally, and the cathodes of each column of LEDs are connected together vertically. When a row drive control signal is added to a row, whether each LED in that row lights up is determined by the column drive control signal added to the corresponding columns of that row. This means that the column drive control signal for each row and column needs to switch between high and low levels to control the start and end times of each LED in each row. This results in a high switching frequency of the high and low levels in the column drive control signal, which causes a large amount of additional power consumption due to the parasitic capacitance on each column line. Summary of the Invention

[0003] The main purpose of the embodiments of the present application is to provide a display panel driving method, device, and display device. The method aims to control the light-emitting start and end times of each LED on each row line through both a row drive control signal and a column drive control signal. This reduces the switching frequency between high and low levels in the column drive control signal while maintaining the row drive control signal, thereby effectively reducing power consumption.

[0004] To achieve the above-mentioned objectives, a first aspect of an embodiment of the present application provides a method for driving a display panel, wherein the display panel includes row lines and column lines, wherein the row lines are connected to the anode of each light-emitting diode in the row line direction, and the column lines are connected to the cathode of each light-emitting diode in the column line direction; the driving method includes:

[0005] Acquire data to be displayed, and generate a row drive control signal according to the data to be displayed, wherein the row drive control signal carries a first light emission end time of odd-numbered row lines in the display panel and a second light emission start time of even-numbered row lines in the display panel;

[0006] Generate a column drive control signal according to the data to be displayed and the row drive control signal, wherein the column drive signal carries a first light-emitting start time of the odd-numbered row lines and a second light-emitting end time of the even-numbered row lines;

[0007] The row drive control signal and the column drive control signal are sent to a drive module, so that the drive module drives the light-emitting diodes on the odd row lines and the even row lines in the display panel to emit light according to the row drive control signal and the column drive control signal.

[0008] In one embodiment of the present application, generating a column drive control signal according to the to-be-displayed data and the row drive control signal includes:

[0009] Determining a first light-emitting duration of each of the odd-numbered lines and a second light-emitting duration of each of the even-numbered lines according to the data to be displayed;

[0010] Determine the first light-emitting start time of each of the odd-numbered row lines according to the first light-emitting duration and the first light-emitting end time of each of the odd-numbered row lines, and determine the second light-emitting end time of each of the even-numbered row lines according to the second light-emitting duration and the second light-emitting start time of each of the even-numbered row lines;

[0011] A corresponding column driving control signal is generated according to the first light-emitting start time of each of the odd-numbered row lines and the second light-emitting end time of each of the even-numbered row lines.

[0012] In one embodiment of the present application, after sending the row driving control signal and the column driving control signal to the driving module, the method further includes:

[0013] A scan control signal is sent to the driving module, so that the driving module identifies the odd row lines and the even row lines according to the scan control signal.

[0014] To achieve the above-mentioned objective, a second aspect of an embodiment of the present application provides a method for driving a display panel, wherein the display panel includes row lines and column lines, wherein the row lines are connected to the anode of each light-emitting diode in the row line direction, and the column lines are connected to the cathode of each light-emitting diode in the column line direction; the driving method includes:

[0015] receiving a row drive control signal and a column drive control signal sent by a timing control module, wherein the row drive control signal carries a first light emission end time of odd-numbered row lines in the display panel and a second light emission start time of even-numbered row lines in the display panel, and the column drive signal carries the first light emission start time of the odd-numbered row lines and the second light emission end time of the even-numbered row lines;

[0016] generating a row driving voltage waveform signal according to the row driving control signal;

[0017] generating a column driving voltage waveform signal corresponding to each column line according to the column driving control signal;

[0018] The light emitting diodes on the odd-numbered row lines and the even-numbered row lines in the display panel are driven to emit light according to the row driving voltage waveform signal and the column driving voltage waveform signal corresponding to each column line.

[0019] In one embodiment of the present application, after receiving the row driving control signal and the column driving control signal sent by the timing control module, the method further includes:

[0020] A scan control signal sent by the timing control module is received to identify odd-numbered row lines and even-numbered row lines according to the scan control signal.

[0021] In one embodiment of the present application, the step of driving the light-emitting diodes on the odd-numbered row lines and the even-numbered row lines in the display panel to emit light according to the row drive voltage waveform signal and the column drive voltage waveform signal corresponding to each column line includes:

[0022] Inputting the row driving voltage waveform signal to the first row line of the display panel, and inputting the column driving voltage waveform signal corresponding to each column line on the first row line, so as to drive each light emitting diode on the first row line to emit light;

[0023] The next row line adjacent to the first row line is used as the first row line, and the row driving voltage waveform signal is input to the first row line of the display panel, and the column driving voltage waveform signal corresponding to each column line is input to each column line on the first row line to drive each light-emitting diode on the first row line to emit light, until all the light-emitting diodes on all row lines of the display panel are driven.

[0024] To achieve the above-mentioned objective, a second aspect of an embodiment of the present application provides a driving device for a display panel, wherein the display panel includes row lines and column lines, wherein the row lines are connected to the anode of each light-emitting diode in the row line direction, and the column lines are connected to the cathode of each light-emitting diode in the column line direction. The driving device includes a timing control module and a driving module, wherein the driving module is electrically connected to the timing control module; and the driving module is electrically connected to the row lines and the column lines.

[0025] The timing control module is used to execute the driving method described in the first aspect of the embodiment of the present application;

[0026] The driving module is used in the driving method described in the second aspect of the embodiment of the present application.

[0027] In one embodiment of the present application, the driving module includes a row driving unit and a plurality of column driving units; the row driving unit is electrically connected to the row line, and the column driving unit is electrically connected to the column line;

[0028] The row driving unit is used to receive the row driving control signal sent by the timing control module, to generate a row driving voltage waveform signal according to the row driving control signal, and to transmit the row driving voltage waveform signal to the row line;

[0029] The column driving unit is used to receive the column driving control signals corresponding to the plurality of column lines sent by the timing control module, to generate a column driving voltage waveform signal corresponding to each column line according to the column driving control signal, and to transmit the column driving voltage waveform signal corresponding to each column line to the corresponding column line.

[0030] In one embodiment of the present application, the driving device further includes a power supply module, which is connected to the timing control module and the driving module and is used to provide power to the timing control module and the driving module.

[0031] To achieve the above-mentioned object, a fourth aspect of the embodiments of the present application provides a display device, comprising a display panel and the driving device according to the third aspect of the embodiments of the present application;

[0032] The driving device includes a timing control module and a driving module. The timing control module applies the driving method described in the first aspect of the embodiment of this application to drive the display panel, and the driving module applies the driving method described in the second aspect of the embodiment of this application to drive the display panel.

[0033] In the technical solution provided by the embodiments of the present application, a timing control module generates row drive control signals based on received data to be displayed, which can be used to control the first emission end time of odd-numbered row lines in the display panel and the second emission start time of even-numbered row lines in the display panel. Furthermore, a column drive control signal can be generated based on the row drive control signals and the data to be displayed, which can be used to control the first emission start time of odd-numbered row lines and the second emission end time of even-numbered row lines. Consequently, for each light-emitting diode on an odd-numbered row line, the emission start time can be controlled by the column drive control signal, and the emission end time can be controlled by the row drive control signal. For each light-emitting diode on an even-numbered row line, the emission start time can be controlled by the row drive control signal, and the emission end time can be controlled by the column drive control signal. In other words, whether each light-emitting diode on each row line is illuminated and the illumination duration can be controlled by both the row drive control signal and the column drive control signal. This reduces the frequency of high- and low-level switching in the column drive control signal while maintaining the row drive control signal, effectively reducing power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the driving architecture of the mini LED display panel;

[0035] Figure 2 This is a schematic diagram of the driving timing of the mini LED display panel;

[0036] Figure 3is a schematic block diagram of the structure of a driving device for a display panel provided in an embodiment of the present application;

[0037] Figure 4 is a flowchart of a driving method performed by a timing control module provided in an embodiment of the present application;

[0038] Figure 5 This is an example diagram of the driving timing of the display panel provided in an embodiment of the present application;

[0039] Figure 6 This is a flowchart of the steps of generating a column drive control signal according to the data to be displayed and the row drive control signal provided by an embodiment of the present application;

[0040] Figure 7 is a flowchart of a driving method performed by a driving module provided in an embodiment of the present application;

[0041] Figure 8 This is a flowchart of the steps of driving each light-emitting diode on each odd-numbered row line and each even-numbered row line in a display panel according to a row driving voltage waveform signal and a column driving voltage waveform signal corresponding to each column line, provided by an embodiment of the present application;

[0042] Figure 9 is another schematic block diagram of the structure of the driving device of the display panel provided in an embodiment of the present application;

[0043] Figure 10 This is another structural schematic block diagram of the driving device of the display panel provided in an embodiment of the present application. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0045] It should be noted that although the device schematics illustrate functional module divisions and the flowcharts illustrate logical sequences, in certain circumstances, the steps shown or described may be performed in a sequence that differs from the module divisions in the device or the sequence in the flowcharts. The terms "first," "second," and so on, in the specification, claims, and drawings, are used to distinguish similar items and are not necessarily used to describe a specific sequence or precedence.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein are for the purpose of describing the embodiments of this application only and are not intended to limit this application.

[0047] With the rapid development of Mini LED display technology, Mini LED display products have begun to be used in ultra-large-screen high-definition displays, such as monitoring and command, high-definition broadcasting, high-end cinemas, medical diagnosis, advertising display, conferences and exhibitions, office display, virtual reality and other commercial fields.

[0048] Currently, the anodes of each row of LEDs in the horizontal direction of the Mini LED display panel are connected together, and the cathodes of each column of LEDs in the vertical direction are connected together. When a row drive control signal is added to a row, whether each LED in the row is lit is determined by the column drive control signal added to the columns corresponding to the row. That is, the column drive control signal of each row and column needs to control the start and end time of the light emission of each LED in each row by switching between high and low levels, resulting in a high switching frequency of the high and low levels in the column drive control signal. For the driving method that controls the brightness by controlling the LED light emission time through PWM (pulse width modulation) signal, the refresh rate is generally very high, easily reaching several thousand hertz. At this time, the high and low level switching of the column drive control signal to control the LED on and off is even higher, so the parasitic capacitance on each column line of the display panel will cause a lot of additional power consumption.

[0049] Reference Figure 1 , Figure 1 This is a schematic diagram of the driving architecture of the mini LED display panel. Figure 1 As shown, the display panel 200 includes a plurality of row lines 210 and a plurality of column lines 220. The row lines 210 are connected to the anode of each light-emitting diode in the direction of the row lines 210, and the column lines 220 are connected to the cathode of each light-emitting diode in the direction of the column lines 220. Each row line 210 corresponds to an input of a row drive voltage waveform signal. For example, the n-th row line 210 corresponds to an input of a row drive voltage waveform signal Gn, the n+1-th row line 210 corresponds to an input of a row drive voltage waveform signal Gn+1, and the n+2-th row line 210 corresponds to an input of a row drive voltage waveform signal Gn+2. Each column line 220 corresponds to an input of a column drive voltage waveform signal. For example, the n-th column line 220 corresponds to an input of a column drive voltage waveform signal Sn, the n+1-th column line 220 corresponds to an input of a column drive voltage waveform signal Sn+1, and the n+2-th column line 220 corresponds to an input of a column drive voltage waveform signal Sn+2.

[0050] Reference Figure 2 , Figure 2 This is a schematic diagram of the driving timing of the mini LED display panel. Figure 2 As shown, curve OE is the enable output curve of the row drive voltage waveform signal curve Gn. Only when Gn is high and Sn is low, the anode and cathode of the light-emitting diode on the nth row line and the nth column line form a voltage difference, so that the light-emitting diode emits light. Among them, the luminous intensity is determined by the luminous duration. The longer the luminous duration, the brighter the brightness. Figure 2 At time T1, Gn outputs a high-level signal. At time T2, Sn is pulled down to a low-level signal, creating a voltage difference between Gn and Sn at time T2, allowing the LED to emit light. That is, the LED starts emitting light at time T2. At time T3, Sn is pulled up to a high-level signal, eliminating the voltage difference between Gn and Sn at time T3, causing the LED to stop emitting light. That is, the LED stops emitting light at time T3. At time T4, Gn is pulled down to a low-level signal, and the nth row line corresponding to Gn is turned off. Clearly, for the nth row line, the LED starts emitting light by pulling Sn down to a low-level signal at time T2, and stops emitting light by pulling Sn up to a high-level signal at time T3. That is, the start and end times of the light emission of the LED on the nth row line are both controlled by switching Sn between high and low levels. Similarly, at time T5, Gn+1 outputs a high-level signal. At time T6, Sn is pulled down to a low level, creating a voltage differential between Gn+1 and Sn at time T6, allowing the LED to emit light. That is, the LED starts emitting light at time T6. At time T7, Sn is pulled up to a high level, eliminating the voltage differential between Gn+1 and Sn at time T7, causing the LED to stop emitting light. That is, the LED stops emitting light at time T7. At time T8, Gn+1 is pulled down to a low level, turning off the row line (n+1) corresponding to Gn+1. Clearly, for the row line (n+1), the LED starts emitting light by pulling Sn down to a low level at time T6, and stops emitting light by pulling Sn up to a high level at time T7. That is, the start and end times of the LED in the row line (n+1) also need to be achieved by switching Sn between high and low levels. According to the curve OE, the positions of T2 and T6 are periodically constant, the positions of T1 and T4 are also periodically constant, and the time difference between T2 and T1 is equal to the time difference between T6 and T5.

[0051] Depend on Figure 2 In the illustrated drive scheme, the start and end times of the LEDs on each row are controlled by switching the Sn signal high and low. This results in a high switching frequency in the column driver control signal. Drive schemes that use PWM signals to control the LED's lighting duration and brightness typically have very high refresh rates, easily reaching several kilohertz. At this rate, the column driver control signal's switching frequency for turning the LEDs on and off is even higher. Consequently, parasitic capacitance on each column line of the display panel results in significant additional power consumption.

[0052] Based on this, embodiments of the present application provide a display panel driving method. This method aims to control the light-emission start and end times of each LED on each row line through both a row drive control signal and a column drive control signal. This method reduces the switching frequency between high and low levels in the column drive control signal while maintaining the row drive control signal, thereby effectively reducing power consumption.

[0053] Reference Figure 3 , Figure 3 : is a schematic block diagram of the structure of the driving device of the display panel provided in the embodiment of the present application. Figure 3 As shown, the display panel 200 includes row lines 210 and column lines 220, and the driving device 100 includes a timing control module 110 and a driving module 120, wherein the driving module 120 is electrically connected to the timing control module 110, and the driving module 120 is electrically connected to the row lines 210 and column lines 220 in the display panel 200.

[0054] In the embodiment of the present application, the driver module 120 can convert the row drive control signal sent by the timing control module 110 into a row drive voltage waveform signal Gn that can be recognized by the display panel 200. At the same time, the driver module 120 can convert the column drive control signal sent by the timing control module 110 into a column drive voltage waveform signal Sn that can be recognized by the display panel 200. In this way, the corresponding row drive voltage waveform signal Gn can be input to the row lines 210 of the display panel 200, and the column drive voltage waveform signal Sn corresponding to each column line 220 of the display panel 200 can be input to each column line 220 of the display panel 200. Therefore, whether each light-emitting diode on each row line 210 is lit and the lighting duration can be determined by the row drive voltage waveform signal Gn corresponding to the row line 210 and the column drive voltage waveform signal Sn corresponding to each column line 220 on the row line.

[0055] It should be noted that the row driving voltage waveform signal Gn varies periodically and constantly. The row driving voltage waveform signal Gn is input simultaneously from both the left and right sides of the row line 210. This avoids voltage loss caused by voltage flowing from one end into the row line 210 and then flowing to the other end away from the inflow end, which would cause uneven voltages at the anodes of the light-emitting diodes on the same row line 210.

[0056] It will be appreciated that the display panel 200 is driven row by row. When a row drive voltage waveform signal is input to the top row line 210 of the display panel 200, corresponding column drive voltage waveform signals must also be input to each column line 220 on that row line 210. Thus, the row drive voltage waveform signal input to that row line 210 and the corresponding column drive voltage waveform signals on each column line 220 on that row line 210 can be used to jointly control the lighting and lighting duration of each light-emitting diode on that row line 210. After driving the top row line 210 of the display panel 200, the light-emitting diodes on the next row line 210 are driven in the same manner.

[0057] Reference Figure 4 , Figure 4 This is a flow chart of a driving method performed by a timing control module according to an embodiment of the present application. Figure 4 As shown, the driving method is Figure 3 The timing control module 110 in the driving device 100 shown executes, including but not limited to, steps S410 to S430 .

[0058] Step S410 , obtaining data to be displayed, and generating row drive control signals according to the data to be displayed, wherein the row drive control signals carry a first light emission end time of odd-numbered row lines in the display panel and a second light emission start time of even-numbered row lines in the display panel.

[0059] In the embodiment of the present application, the timing control module 110 first obtains the data to be displayed, and then generates corresponding row drive control signals by analyzing the data to be displayed. The row drive control signals mainly include a CPV (row drive conversion clock) signal, an STV (row drive start pulse) signal, and an OEV (gate row drive output enable) signal. By changing the timing of the CPV signal, the STV signal, and the OEV signal, the switching of the TFT (thin film transistor) can be controlled, thereby controlling the display of the image. The generated row drive control signal may carry the first end time of the light emission of the odd-numbered row lines in the display panel 200 and the second start time of the light emission of the even-numbered row lines in the display panel. Specifically, the LED can be controlled to be non-conductive by switching the voltage from high to low, thereby controlling the end time of the light emission of each odd-numbered row line. At the same time, the voltage can be controlled to form a voltage difference between the anode and cathode of the LED by switching the voltage from low to high, thereby controlling the start time of the light emission of each even-numbered row line.

[0060] Step S420 , generating a column driving control signal according to the data to be displayed and the row driving control signal, wherein the column driving signal carries a first light-emitting start time of the odd row lines and a second light-emitting end time of the even row lines.

[0061] In the embodiment of the present application, after the timing control module 110 generates a row drive control signal based on the data to be displayed, it can further generate a column drive control signal based on the data to be displayed and the row drive control signal. The column drive control signal mainly includes a CPH (column drive conversion clock) signal, an STH (column drive start pulse) signal, and an OEH (column drive output enable) signal. By changing the timing of the CPH signal, the OEH signal, and the STH signal, image display control can be achieved.

[0062] It should be noted that, since the timing control module 110 can determine the lighting end time of each odd-numbered row line when generating the row drive control signal, the timing control module 110 can first obtain the corresponding lighting duration based on the display data corresponding to each odd-numbered row line, and then reversely infer the lighting start time of each odd-numbered row line based on the lighting end time and the corresponding lighting duration of each odd-numbered row line. Similarly, the timing control module 110 can determine the lighting start time of each even-numbered row line based on the generated row drive control signal. Therefore, the timing control module 110 can first obtain the corresponding lighting duration based on the display data corresponding to each even-numbered row line, and then reversely infer the lighting end time of each even-numbered row line based on the lighting start time and the corresponding lighting duration of each even-numbered row line.

[0063] It should be noted that after the timing control module 110 sends a row drive control signal to the driver module 120, the driver module 120 first converts the row drive control signal into a row drive voltage waveform signal recognizable by the display panel 200, and then inputs the signal to each row line 210 of the display panel 200. Similarly, after the timing control module 110 sends a column drive control signal to the driver module 120, the driver module 120 first converts the column drive control signal into a column drive voltage waveform signal recognizable by the display panel 200, and then inputs the signal to each column line 220 of the display panel 200.

[0064] For example, referring to Figure 5 , Figure 5 : is a driving timing diagram of a display panel provided by an embodiment of the present application. Figure 5As shown, curve OE is the enable output curve of the row drive voltage waveform signal curve Gn. Curve Gn is the row drive voltage waveform signal curve corresponding to the n-th row line, Gn+1 is the row drive voltage waveform signal curve corresponding to the n+1-th row line, and Gn+2 is the row drive voltage waveform signal curve corresponding to the n+2-th row line. Curve Sn is the column drive voltage waveform signal curve corresponding to the n-th column line. Gn typically outputs a high-level signal at time T1 and pulls down to a low-level signal at time T3. That is, at time T3, Gn is turned off, the light-emitting diode (LED) is not conducting, and the light-emitting diode (LED) on the n-th row line ends. That is, for the n-th row line, the light-emitting diode's light-emitting end time can be controlled by Gn. Therefore, the light-emitting start time of the LED on the n-th row line can be inferred based on the light-emitting duration of the data to be displayed and the light-emitting end time. For example, by inferring the start time of light emission for the LED on the nth row line as T2, Sn is pulled down to a low level at T2, creating a voltage differential between the anode and cathode of the LED on the nth row line, causing the LED to begin emitting light. Similarly, Gn+1 outputs a high level at T4, and Gn is pulled down to a low level at T6. That is, at T4, Gn+1 is high and Sn is low, creating a voltage differential between Gn+1 and Sn, causing the LED to begin emitting light. For the n+1th row line, Gn+1 can control the start time of light emission for the LED. Therefore, the end time of light emission for the LED on the n+1th row line can be inferred simply based on the duration of light emission of the data to be displayed and the start time of light emission. For example, by inferring the end time of light emission for the LED on the n+1th row line as T5, Sn is pulled up to a high level at T5, eliminating the voltage differential between the anode and cathode of the LED on the n+1th row line, causing the LED to cease emitting light. For the row driving voltage waveform signal, the time interval for the voltage to switch from high to low or from low to high changes periodically and constantly.

[0065] Step S430 , sending row drive control signals and column drive control signals to the drive module, so that the drive module drives the light emitting diodes on the odd and even row lines of the display panel according to the row drive control signals and column drive control signals.

[0066] In the embodiment of the present application, after generating the row drive control signal and the column drive control signal, the timing control module 110 sends the row drive control signal and the column drive control signal to the driving module 120. The driving module 120 can generate a row drive voltage waveform signal that can be recognized by the display panel 200 based on the row drive control signal. At the same time, the driving module 120 can generate a column drive voltage waveform signal corresponding to each column line that can be recognized by the display panel 200 based on the column drive control signal. Thus, the driving module 120 transmits the row drive voltage waveform signal to each row line of the display panel 200, and transmits each column drive voltage waveform signal to each corresponding column line, so as to realize light-emitting driving of each light-emitting diode on each odd row line and each even row line in the display panel 200.

[0067] In the embodiment of the present application, the timing control module 110 is configured to receive data to be displayed and generate a periodically constant row drive control signal based on the data to be displayed. The row drive control signal controls the end time of each odd-numbered row line's light emission to be periodically constant, and the start time of each even-numbered row line's light emission to be periodically constant. The timing control module 110 also generates a column drive control signal based on the data to be displayed and the row drive control signal. The generated column drive control signal controls the start time of each odd-numbered row line's light emission and the end time of each even-numbered row line's light emission. Therefore, after the timing control module 110 sends the row drive control signal and the column drive control signal to the drive module 120, the drive module 120 can generate a corresponding row drive voltage waveform signal according to the row drive control signal, and the drive module 120 can also generate a column drive voltage waveform signal corresponding to each column line according to the column drive control signal, so that the drive module 120 can transmit the row drive voltage waveform signal to each row line of the display panel 200, and transmit each column drive voltage waveform signal to each corresponding column line, so as to realize light-emitting driving of each light-emitting diode on each odd row line and each even row line in the display panel 200.

[0068] In one embodiment of the present application, referring to Figure 6 , Figure 6 This is a flowchart of the steps of generating a column drive control signal according to the data to be displayed and the row drive control signal provided by the embodiment of the present application. The steps are executed by the timing control module 110 and include but are not limited to steps S610 to S630.

[0069] Step S610, determining a first light-emitting duration of each odd-numbered row line and a second light-emitting duration of each even-numbered row line according to the data to be displayed;

[0070] Step S620, determining a first light-emitting start time of each odd-numbered row line based on the first light-emitting duration and the first light-emitting end time of each odd-numbered row line, and determining a second light-emitting end time of each even-numbered row line based on the second light-emitting duration and the second light-emitting start time of each even-numbered row line;

[0071] Step S630 , generating corresponding column driving control signals according to the first light-emitting start time of each odd-numbered row line and the second light-emitting end time of each even-numbered row line.

[0072] In the embodiment of the present application, the timing control module 110 can determine the first light-emitting duration corresponding to each LED on each odd-numbered row line and the second light-emitting duration corresponding to each LED on each even-numbered row line by processing and analyzing the data to be displayed. Since the first light-emitting end time of each LED on each odd-numbered row line can be determined using the row drive voltage waveform signal, the first light-emitting start time corresponding to each LED on the odd-numbered row line can be inferred based on the first light-emitting end time and the first light-emitting duration. Similarly, since the second light-emitting start time of each LED on each even-numbered row line can be determined using the row drive voltage waveform signal, the second light-emitting end time corresponding to each LED on the even-numbered row line can be inferred based on the second light-emitting start time and the second light-emitting duration. Based on the inferred first light-emitting start time of each odd-numbered row line and the second light-emitting end time of each even-numbered row line, a corresponding column drive control signal is generated. The generated column drive control signal can be used to control the first light-emitting start time of each odd-numbered row line and the second light-emitting end time of each even-numbered row line.

[0073] For example, a high-frequency grayscale clock signal represents one grayscale. If the light-emitting data in the display data is 10 bits, there are 1024 grayscales from 0 to 1023, corresponding to 1023 grayscale clocks. The time from the rise to the fall of the row drive voltage waveform signal Gn is divided into 1023 parts. The rising time of the row drive voltage waveform signal Gn is used as the start time for light emission on the even-numbered rows, and the falling time of the row drive voltage waveform signal Gn is used as the maximum time for the light-emitting diodes on the even-numbered rows to emit light. At the same time as the rising time of the row drive voltage waveform signal Gn on the even-numbered rows begins, the column drive voltage waveform signal Sn is pulled down to a low level. Then, based on the light-emitting data value, for example, 500, the column drive voltage waveform signal Sn is pulled up to a high level 500 grayscale clocks after the rising time of the row drive voltage waveform signal Gn, to terminate light emission. Odd-numbered rows need to convert the light-emitting data. For example, if 500 lights are required, since there are 1023 copies in total, we can reversely infer that the column drive voltage waveform signal Sn is pulled down to a low level 523 gray-scale clock positions after the row drive voltage waveform signal Gn rises, so that light emission starts at the 523 gray-scale clock position. After another 500 gray-scale clocks, the row drive voltage waveform signal Gn is pulled down to a low level, so that light emission ends. Figure 5 For example, although the column driving voltage waveform signal Sn outputs a low voltage from time T3 to time T4, the row driving voltage waveform signal Gn is turned off and the light emitting diode cannot be turned on, so no power consumption is generated.

[0074] In the embodiment of the present application, corresponding column drive control signals are generated by using the data to be displayed and a pre-generated row drive control signal with a constant periodic change. Thus, while the row drive control signal remains unchanged, the light-emitting start time and light-emitting end time of each light-emitting diode on each row line can be controlled by the row drive control signal and the column drive control signal together. This can reduce the switching frequency of high and low levels in the column drive control signal, thereby effectively reducing power consumption.

[0075] In one embodiment of the present application, after sending the row driving control signal and the column driving control signal to the driving module, Figure 4 The driving method shown also includes:

[0076] A scan control signal is sent to the driving module, so that the driving module identifies the odd row lines and the even row lines according to the scan control signal.

[0077] In the embodiment of the present application, since the mini LED display panel is driven row by row by scanning from top to bottom or from bottom to top, the timing control module 110 needs to send a scan control signal to the driving module 120 at the same time after sending the row drive control signal and the column drive control signal to the driving module 120, so that the driving module can identify the odd row lines and the even row lines according to the scan control signal.

[0078] In the embodiment of the present application, since the driving module 120 can identify whether the row line currently to be driven is an odd row line or an even row line based on the scanning control signal, after outputting the row driving voltage waveform signal that changes periodically and constantly, it can accurately generate a corresponding column driving voltage waveform signal based on the column driving control signal sent by the timing control module 110 according to the parity of the identified row line currently to be driven.

[0079] For example, the clock control module 110 sends a grayscale clock signal of 500 to the driver module 120. For even-numbered row lines, this indicates that the column drive voltage waveform signal Sn must be pulled high 500 grayscale clocks after the row drive voltage waveform signal Gn rises to stop emitting light. For odd-numbered row lines, this indicates that the column drive voltage waveform signal Sn must be pulled low 500 grayscale clocks after the row drive voltage waveform signal Gn rises, thereby starting to emit light at 500 grayscale clocks. Thus, for even-numbered row lines, the grayscale clock signal of 500 sent by the timing control module 110 means pulling the column drive voltage waveform signal Sn high at 500 grayscale clocks to stop emitting light. For odd-numbered row lines, the grayscale clock signal of 500 sent by the timing control module 110 means pulling the column drive voltage waveform signal Sn low at 500 grayscale clocks to start emitting light.

[0080] Reference Figure 7 , Figure 7 This is a flow chart of a driving method performed by a driving module provided in an embodiment of the present application. Figure 7 As shown, the driving method is Figure 3 The driving module 120 in the driving device 100 shown executes, including but not limited to, steps S710 to S740.

[0081] Step S710: Receive a row drive control signal and a column drive control signal sent by a timing control module, wherein the row drive control signal carries a first light emission end time of odd-numbered row lines in the display panel and a second light emission start time of even-numbered row lines in the display panel, and the column drive signal carries the first light emission start time of odd-numbered row lines and a second light emission end time of even-numbered row lines;

[0082] Step S720, generating a row driving voltage waveform signal according to the row driving control signal;

[0083] Step S730 , generating a column driving voltage waveform signal corresponding to each column line according to the column driving control signal;

[0084] Step S740 , driving each light emitting diode on each odd-numbered row line and each even-numbered row line in the display panel to emit light according to the row driving voltage waveform signal and the column driving voltage waveform signal corresponding to each column line.

[0085] In the embodiment of the present application, the driving module 120 is the main executing body. After receiving the row driving control signal and the column driving control signal sent by the timing control module, the driving module 120 further generates a row driving voltage waveform signal identifiable by the display panel 200 based on the row driving control signal, and generates a column driving voltage waveform signal corresponding to each column line identifiable by the display panel 200 based on the column driving control signal. In this way, the light-emitting diodes on each odd-numbered row line and each even-numbered row line of the display panel 200 can be driven to emit light based on the row driving voltage waveform signal and the column driving voltage waveform signal corresponding to each column line.

[0086] In the embodiment of the present application, the driver module 120 primarily drives the display panel 200 based on the row drive control signals and column drive control signals sent by the timing control module 110. The driver module 120 also needs to convert the row drive control signals into row drive voltage waveform signals recognizable by the display panel 200, and convert the column drive control signals into column drive voltage waveform signals corresponding to the respective column lines recognizable by the display panel 200. For example, when the timing control module 110 sends a row drive start pulse signal to the driver module 120, the row drive voltage waveform signal generated by the driver module 120 is pulled up to a high level upon receiving the row drive start pulse signal. When the driver module 120 receives a row drive shutdown command signal, the row drive voltage waveform signal generated by the driver module 120 is pulled down to a low level upon receiving the row drive shutdown command signal. Similarly, when the driver module 120 receives a grayscale clock signal of 500, the column drive voltage waveform signal generated by the driver module 120 may be pulled up to a high level upon receiving the grayscale clock signal of 500 to terminate light emission. Alternatively, when the driving module 120 receives a gray-scale clock signal of 500, the column driving voltage waveform signal generated may be pulled down to a low level when receiving the gray-scale clock signal of 500, so as to start emitting light.

[0087] In one embodiment of the present application, referring to Figure 8 , Figure 8 This is a flowchart of the steps provided in an embodiment of the present application for driving each light-emitting diode on each odd row line and each even row line in the display panel according to the row drive voltage waveform signal and the column drive voltage waveform signal corresponding to each column line, which is executed by the driving module 120, including but not limited to steps S810 to S820.

[0088] Step S810: Inputting a row driving voltage waveform signal to the first row line of the display panel, and inputting a column driving voltage waveform signal corresponding to each column line on the first row line to drive each light emitting diode on the first row line to emit light;

[0089] In step S820, the next row line adjacent to the first row line is used as the first row line, and a row drive voltage waveform signal is input to the first row line of the display panel, and a column drive voltage waveform signal corresponding to each column line is input to each column line on the first row line to drive each light-emitting diode on the first row line to emit light, until all the light-emitting diodes on all row lines of the display panel are driven.

[0090] In an embodiment of the present application, the display panel uses a row-by-row drive method to drive light. For example, the display panel includes n rows of row lines and n columns of column lines, where the n rows of row lines are row 1, row 2, and row 3 to row n. The n columns of column lines are column 1, column 2, and column 3 to column n. At this time, the driver module 120 first inputs the row drive voltage waveform signal G1 to the row line 1, and simultaneously inputs the column drive voltage waveform signal S1 corresponding to the column line 1 to the column line 1, the column drive voltage waveform signal S2 corresponding to the column line 2 to the column line 2, the column drive voltage waveform signal S3 corresponding to the column line 3 to the column line 3, and the column drive voltage waveform signal Sn corresponding to the n-th column line to the n-th column line. That is, the column drive voltage waveform signals corresponding to all n-th column lines on the row line 1 are input to the corresponding column lines to achieve light-emitting drive of all light-emitting diodes on the row 1. Then, a shift is performed to input the row driving voltage waveform signal to the row line of row 2, and the column driving voltage waveform signals corresponding to all n column lines on the row line of row 2 are input to the corresponding column lines to achieve light-emitting drive of all light-emitting diodes on row 2. In this way, the light-emitting diodes on all row lines of the display panel 200 are driven row by row.

[0091] The embodiment of the present application displays information on the display panel array by scanning row by row and synchronously transforming the column drive control signal on each column, thereby reducing the power consumption of the mini LED display panel.

[0092] In one embodiment of the present application, after receiving the row driving control signal and the column driving control signal sent by the timing control module, Figure 7 The driving method shown also includes:

[0093] The scanning control signal sent by the timing control module is received to identify the odd-numbered row lines and the even-numbered row lines according to the scanning control signal.

[0094] In an embodiment of the present application, after receiving the row drive control signal and the column drive control signal sent by the timing control module 110, the driving module 120 can also receive the scan control signal sent by the timing control module 110, so that the driving module 120 can identify the odd row lines and the even row lines according to the scan control signal.

[0095] In the embodiment of the present application, the driving module 120 can identify whether the row line to be driven is an odd row line or an even row line based on the received scan control signal, and thus can generate a corresponding row driving voltage waveform signal from the row driving control signal sent by the timing control module 110, and generate a corresponding column driving voltage waveform signal from the column driving control signal sent by the timing control module 110 based on the identification result.

[0096] Reference Figure 9 , Figure 9 FIG. 1 is another schematic block diagram of the structure of the driving device of the display panel provided in an embodiment of the present application. Figure 9 As shown, the display panel 200 includes row lines 210 and column lines 220, and the driving device 100 includes a timing control module 110 and a driving module 120, wherein the driving module 120 is electrically connected to the timing control module 110, and the driving module 120 includes a row driving unit 121 and multiple column driving units 122; the row driving unit 121 is electrically connected to the row lines, and the column driving unit 122 is electrically connected to the column lines.

[0097] In the embodiment of the present application, the driving module 120 includes a row driving unit 121 and a plurality of column driving units 122. The row driving unit 121 is used to control the input of row line driving signals for each row of the display panel 200, and each column driving unit 122 is used to control the input of column line driving signals for each column of the display panel 200. In the embodiment of the present application, the row driving unit 121 is used to receive the row driving control signal sent by the timing control module 110, to generate a row driving voltage waveform signal according to the row driving control signal, and to transmit the row driving voltage waveform signal to the row line. The column driving unit 122 is used to receive the column driving control signal corresponding to the plurality of column lines sent by the timing control module 110, to generate a column driving voltage waveform signal corresponding to each column line according to the column driving control signal, and to transmit the column driving voltage waveform signal corresponding to each column line to the corresponding column line.

[0098] Exemplarily, the row driving unit 121 first inputs a row driving voltage waveform signal to the first row line, and each column driving unit 122 inputs the column driving voltage waveform signals corresponding to the plurality of column lines to the corresponding column lines, thereby driving all light-emitting diodes on the first row line to emit light. Next, the row driving unit 121 inputs a row driving voltage waveform signal to the second row line, and each column driving unit 122 inputs the column driving voltage waveform signals corresponding to the plurality of column lines to the corresponding column lines, thereby driving all light-emitting diodes on the second row line to emit light.

[0099] It is understandable that each column driver unit 122 is responsible for driving and controlling a plurality of column lines. For example, one column driver unit 122 may be responsible for driving and controlling 960 column lines.

[0100] In one embodiment of the present application, referring to Figure 10 , refer to Figure 10 , Figure 10 FIG. 1 is another schematic block diagram of the structure of the driving device of the display panel provided in an embodiment of the present application. Figure 10As shown, the display panel 200 includes row lines 210 and column lines 220, and the driving device 100 includes a timing control module 110 and a driving module 120. The driving module 120 is electrically connected to the timing control module 110 and includes a row driving unit 121 and a plurality of column driving units 122. The row driving unit 121 is electrically connected to the row lines, and the column driving unit 122 is electrically connected to the column lines. The driving device 100 also includes a power supply module 130, which is connected to the timing control module 110 and the driving module 120 to provide power to the timing control module 110 and the driving module 120.

[0101] In the embodiment of the present application, a power supply module 130 is provided to connect with the timing control module 110 and the driving module 120 so that the power supply module 130 can provide power to the timing control module 110 and the driving module 120 so that the timing control module 110 and the driving module 120 can work effectively.

[0102] The embodiment of the present application also provides a display device, including a display panel 200 and a driving device 100 provided in any embodiment of the present application. The driving device 100 includes a timing control module 110 and a driving module 120. The timing control module 110 can be applied to Figure 4 The driving method shown drives the display panel 200, and the driving module 120 can be applied Figure 7 The driving method shown drives the display panel 200 .

[0103] Since the display device provided by the embodiment of the present application includes the driving device 100 provided by any embodiment of the present application, the display device of the present application can effectively reduce power consumption.

[0104] The embodiments described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0105] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present application, and may include more or fewer steps than shown in the figures, or a combination of certain steps, or different steps.

[0106] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, i.e., they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of this embodiment.

[0107] Those skilled in the art will appreciate that all or some of the steps in the methods, systems, and functional modules / units in the devices disclosed above may be implemented as software, firmware, hardware, or appropriate combinations thereof.

[0108] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0109] It should be understood that in this application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0110] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the above-mentioned units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0111] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0112] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0113] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes multiple instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of various embodiments of the present application. The aforementioned storage medium includes: various media that can store programs, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0114] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but are not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and essence of the present invention should be within the scope of the present invention.

Claims

1. A method for driving a display panel, characterized in that: The display panel includes row lines and column lines, wherein the row lines are connected to the anode of each light-emitting diode in the row line direction, and the column lines are connected to the cathode of each light-emitting diode in the column line direction; the driving method includes: Acquire data to be displayed, and generate a row drive control signal according to the data to be displayed, wherein the row drive control signal carries a first light emission end time of odd-numbered row lines in the display panel and a second light emission start time of even-numbered row lines in the display panel; Generate a column drive control signal according to the data to be displayed and the row drive control signal, wherein the column drive control signal carries a first light-emitting start time of the odd-numbered row lines and a second light-emitting end time of the even-numbered row lines; The row drive control signal and the column drive control signal are sent to a drive module, so that the drive module drives the light-emitting diodes on the odd row lines and the even row lines in the display panel to emit light according to the row drive control signal and the column drive control signal.

2. The method according to claim 1, characterized in that Generating a column drive control signal according to the data to be displayed and the row drive control signal includes: Determining a first light-emitting duration of each of the odd-numbered lines and a second light-emitting duration of each of the even-numbered lines according to the data to be displayed; Determine the first light-emitting start time of each of the odd-numbered row lines according to the first light-emitting duration and the first light-emitting end time of each of the odd-numbered row lines, and determine the second light-emitting end time of each of the even-numbered row lines according to the second light-emitting duration and the second light-emitting start time of each of the even-numbered row lines; A corresponding column driving control signal is generated according to the first light-emitting start time of each of the odd-numbered row lines and the second light-emitting end time of each of the even-numbered row lines.

3. The method according to claim 1, characterized in that After sending the row driving control signal and the column driving control signal to the driving module, the method further includes: A scan control signal is sent to the driving module, so that the driving module identifies the odd row lines and the even row lines according to the scan control signal.

4. A method for driving a display panel, characterized in that: The display panel includes row lines and column lines, wherein the row lines are connected to the anode of each light-emitting diode in the row line direction, and the column lines are connected to the cathode of each light-emitting diode in the column line direction; the driving method includes: receiving a row drive control signal and a column drive control signal sent by a timing control module, wherein the row drive control signal carries a first light emission end time of odd-numbered row lines in the display panel and a second light emission start time of even-numbered row lines in the display panel, and the column drive control signal carries the first light emission start time of the odd-numbered row lines and the second light emission end time of the even-numbered row lines; generating a row driving voltage waveform signal according to the row driving control signal; generating a column driving voltage waveform signal corresponding to each column line according to the column driving control signal; The light emitting diodes on the odd-numbered row lines and the even-numbered row lines in the display panel are driven to emit light according to the row driving voltage waveform signal and the column driving voltage waveform signal corresponding to each column line.

5. The method according to claim 4, characterized in that After receiving the row driving control signal and the column driving control signal sent by the timing control module, the method further includes: A scan control signal sent by the timing control module is received to identify odd-numbered row lines and even-numbered row lines according to the scan control signal.

6. The method according to claim 4, characterized in that The step of driving the light emitting diodes on the odd-numbered row lines and the even-numbered row lines in the display panel to emit light according to the row driving voltage waveform signal and the column driving voltage waveform signal corresponding to each column line includes: Inputting the row driving voltage waveform signal to the first row line of the display panel, and inputting the column driving voltage waveform signal corresponding to each column line on the first row line, so as to drive each light emitting diode on the first row line to emit light; The next row line adjacent to the first row line is used as the first row line, and the row driving voltage waveform signal is input to the first row line of the display panel, and the column driving voltage waveform signal corresponding to each column line is input to each column line on the first row line to drive each light-emitting diode on the first row line to emit light, until all the light-emitting diodes on all row lines of the display panel are driven.

7. A driving device for a display panel, characterized in that: The display panel includes row lines and column lines, the row lines are connected to the anode of each light-emitting diode in the row line direction, and the column lines are connected to the cathode of each light-emitting diode in the column line direction. The driving device includes a timing control module and a driving module, the driving module is electrically connected to the timing control module; the driving module is electrically connected to the row lines and the column lines; The timing control module is used to execute the driving method according to any one of claims 1 to 3; The driving module is used to execute the driving method according to any one of claims 4 to 6.

8. The driving device according to claim 7, characterized in that The driving module includes a row driving unit and a plurality of column driving units; the row driving unit is electrically connected to the row line, and the column driving unit is electrically connected to the column line; The row driving unit is used to receive the row driving control signal sent by the timing control module, to generate a row driving voltage waveform signal according to the row driving control signal, and to transmit the row driving voltage waveform signal to the row line; The column driving unit is used to receive the column driving control signals corresponding to the plurality of column lines sent by the timing control module, to generate a column driving voltage waveform signal corresponding to each column line according to the column driving control signal, and to transmit the column driving voltage waveform signal corresponding to each column line to the corresponding column line.

9. The driving device according to claim 7, characterized in that The driving device further includes a power supply module, which is connected to the timing control module and the driving module and is used to provide power to the timing control module and the driving module.

10. A display device, characterized in that: comprising a display panel and a driving device according to any one of claims 7 to 9; The driving device includes a timing control module and a driving module. The timing control module drives the display panel using the driving method according to any one of claims 1 to 3. The driving module drives the display panel using the driving method according to any one of claims 4 to 6.

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