Driving method, driving circuit and display device

Abstract

The invention relates to a driving method, a driving circuit and a display device, and the method comprises the steps: detecting whether a to-be-displayed picture is a continuous and repeated picture or not; if the to-be-displayed picture is a continuous and repeated picture, a differential signal is sent to a driver through a time schedule controller, and the differential signal comprises a locking signal and a voltage signal corresponding to the continuous and repeated picture; under the condition that the driver detects that the differential signal carries the locking signal, the differential signal is transmitted to the voltage locking circuit according to a preset signal transmission strategy; and continuously transmitting voltage signals corresponding to the continuous and repeated pictures to the display panel through the voltage locking circuit so as to drive the display panel to continuously display the continuous and repeated pictures. The power consumption can be reduced, and the display effect is not influenced.

Description

Technical Field

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

[0002] As consumers prefer large-size, high-refresh displays, displays are moving towards larger sizes and higher refresh rates. However, while high refresh rates and high resolutions improve display effects, they also increase the power consumption of display devices. The increase in power consumption of display devices not only brings economic burdens, but also has adverse effects on the environment, equipment performance, and user experience. Moreover, due to the energy crisis and the greenhouse effect, countries around the world are gradually tightening energy efficiency standards, especially the EU's energy efficiency regulations on electronic products, which greatly restrict the development of large sizes, high resolutions, and high refresh rates.

[0003] Therefore, how to reduce power consumption without affecting the display effect has become an urgent problem that needs to be solved in the display industry.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The present application provides a driving method, a driving circuit and a display device to solve the above-mentioned technical problem of “how to reduce power consumption without affecting the display effect”.

[0006] According to one aspect of an embodiment of the present application, the present application provides a driving method, including: detecting whether a picture to be displayed is a continuously repeated picture; if the picture to be displayed is a continuously repeated picture, sending a differential signal to a driver through a timing controller, wherein the differential signal includes a locking signal and a voltage signal corresponding to the continuously repeated picture; when the driver detects that the differential signal carries the locking signal, the driver transmits the differential signal to a voltage locking circuit according to a preset signal transmission strategy; and continuously transmitting the voltage signal corresponding to the continuously repeated picture to a display panel through the voltage locking circuit, so as to drive the display panel to continuously display the continuously repeated picture.

[0007] Optionally, a differential signal is transmitted to the voltage locking circuit according to a preset signal transmission strategy, including: the driver transmits the voltage signal to the voltage locking circuit through a first transmission circuit; the driver transmits the locking signal to the voltage locking circuit through a second transmission circuit, wherein when the second transmission circuit is enabled, each component on the first transmission circuit is in a sleep state.

[0008] Optionally, after the driver transmits the locking signal to the voltage locking circuit through the second transmission circuit, the method further includes: if the timing controller detects that the next frame to be displayed is different from the continuously repeated frame being displayed, a locking release signal is sent to the driver; the driver controls the second transmission circuit to close according to the locking release signal.

[0009] Optionally, the method further includes: providing a polarity reversal signal to the driver at preset time intervals through a timing controller, wherein the preset time duration is the cumulative time duration of a target number of frames, and the polarity reversal signal is used to switch the voltage polarity; the driver outputs a voltage signal of corresponding polarity to the display panel under the control of the polarity reversal signal.

[0010] According to another aspect of an embodiment of the present application, the present application provides a driving circuit for driving a display panel, the driving circuit comprising: a timing controller and a driver, the driver being connected to the timing controller and the display panel respectively, the driver comprising a voltage locking circuit and at least one transmission circuit; the timing controller being used to detect whether a picture to be displayed is a continuously repeated picture; if the picture to be displayed is a continuously repeated picture, a differential signal is sent to the driver, wherein the differential signal comprises a locking signal and a voltage signal corresponding to the continuously repeated picture; the driver being used to transmit the differential signal to the voltage locking circuit according to a preset signal transmission strategy when it is detected that the differential signal carries the locking signal; the voltage signal corresponding to the continuously repeated picture is continuously transmitted to the display panel through the voltage locking circuit to drive the display panel to continuously display the continuously repeated picture.

[0011] Optionally, the driver is also used to transmit the voltage signal to the voltage locking circuit through the first transmission circuit, the first transmission circuit includes a data interface, a shift register, a data register, a line latch and a resistive digital-to-analog converter, the data interface is respectively connected to the controller and the shift register of the driver, the shift register is connected to the data register, the data register is connected to the line latch, the line latch is connected to the resistive digital-to-analog converter, and the resistive digital-to-analog converter is connected to the voltage locking circuit.

[0012] Optionally, the driver is also used to transmit a locking signal to the voltage locking circuit through a second transmission circuit, wherein when the second transmission circuit is enabled, each component on the first transmission circuit is in a sleep state, the second transmission circuit includes a data interface and a wire, and the second transmission circuit is used to directly transmit signals between the controller and the voltage locking circuit.

[0013] Optionally, the voltage locking circuit is specifically used to transmit a voltage signal to the display panel when a voltage signal is received, so as to drive the display panel to start displaying continuously repeated images; when a locking signal is received, the signal transmitted to the display panel is locked, and the voltage signal is continuously transmitted to the display panel to drive the display panel to continuously display continuously repeated images.

[0014] Optionally, the voltage locking circuit includes a switching tube and a capacitor, the control end of the switching tube is connected to the second transmission circuit, one end of the switching tube is connected to the first transmission circuit, the other end of the switching tube is connected to one end of the capacitor, and the other end of the capacitor is grounded. The switching tube is used to turn on when receiving a voltage signal and output a voltage signal; it is turned off when receiving a locking signal, and at the same time, the output voltage is kept stable by releasing the charge through the capacitor. The capacitor is used to pre-store the charge corresponding to the voltage signal.

[0015] According to another aspect of an embodiment of the present application, the present application provides a display device, including: a display panel and the above-mentioned driving circuit, wherein the driving circuit is electrically connected to the display panel.

[0016] The present application adopts a driving method, including: detecting whether the picture to be displayed is a continuously repeated picture; if the picture to be displayed is a continuously repeated picture, sending a differential signal to the driver through a timing controller, wherein the differential signal includes a locking signal and a voltage signal corresponding to the continuously repeated picture; when the driver detects that the differential signal carries the locking signal, the differential signal is transmitted to the voltage locking circuit according to a preset signal transmission strategy; the voltage signal corresponding to the continuously repeated picture is continuously transmitted to the display panel through the voltage locking circuit to drive the display panel to continuously display the continuously repeated picture. When the timing controller detects that the picture to be displayed is a continuously repeated picture, the differential signal carrying the locking signal is sent to the driver, and the driver transmits the voltage signal and the locking signal in the differential signal to the voltage locking circuit in sequence according to the preset signal transmission strategy, and replaces the processing flow of the complete voltage signal when displaying the repeated picture by transmitting a fixed locking signal, so that the voltage locking circuit continues to transmit the voltage signal to the display panel after receiving the locking signal, so as to drive the display panel to continuously display the continuously repeated picture, which can reduce power consumption and ensure that the display effect is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 A schematic diagram of a flow chart of an optional driving method provided according to an embodiment of the present application;

[0020] Figure 2A A schematic diagram of sending an original data item provided according to an embodiment of the present application;

[0021] Figure 2B A schematic diagram of sending data items according to an embodiment of the present application;

[0022] Figure 3 An optional polarity reversal schematic diagram provided according to an embodiment of the present application;

[0023] Figure 4 A schematic diagram of an optional driving circuit provided according to an embodiment of the present application;

[0024] Figure 5 A schematic diagram of signal transmission between an optional timing controller and a driver provided according to an embodiment of the present application;

[0025] Figure 6 A schematic diagram of the composition of an optional driver provided according to an embodiment of the present application;

[0026] Figure 7 A schematic diagram of another optional driver according to an embodiment of the present application;

[0027] Figure 8 A block diagram of an optional driving device provided according to an embodiment of the present application;

[0028] Fig. 9 A schematic diagram of an optional display device provided according to an embodiment of the present application.

[0029] Among them, 401-timing controller, 402-driver, 901-display panel, 902-driving circuit. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, 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 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 making creative work are within the scope of protection of this application.

[0031] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present application and have no specific meaning. Therefore, "module" and "component" can be used interchangeably.

[0032] As consumers prefer large-size, high-refresh displays, displays are moving towards larger sizes and higher refresh rates. However, while high refresh rates and high resolutions improve display effects, they also increase the power consumption of display devices. The increase in power consumption of display devices not only brings economic burdens, but also has adverse effects on the environment, equipment performance, and user experience. Moreover, due to the energy crisis and the greenhouse effect, countries around the world are gradually tightening energy efficiency standards, especially the EU's energy efficiency regulations on electronic products, which greatly restrict the development of large sizes, high resolutions, and high refresh rates.

[0033] Therefore, how to reduce power consumption without affecting the display effect has become an urgent problem that needs to be solved in the display industry.

[0034] In order to solve the problem mentioned in the background technology, according to one aspect of the embodiment of the present application, a driving method is provided, such as Figure 1 As shown, including:

[0035] Step 101, detecting whether the picture to be displayed is a continuous and repeated picture;

[0036] Step 103, if the picture to be displayed is a continuously repeated picture, a differential signal is sent to the driver through the timing controller, wherein the differential signal includes a locking signal and a voltage signal corresponding to the continuously repeated picture;

[0037] Step 105, when the driver detects that the differential signal carries a locking signal, the driver transmits the differential signal to the voltage locking circuit according to a preset signal transmission strategy;

[0038] Step 107 : continuously transmitting a voltage signal corresponding to the continuously repeated images to the display panel through a voltage locking circuit, so as to drive the display panel to continuously display the continuously repeated images.

[0039] The way that the timing controller transmits differential signals to the driver is widely used in various display systems. The power consumption characteristics of the differential signal transmitted by the timing controller to the driver are closely related to the voltage change under the RC load. When the voltage on the differential signal line changes, the current on the signal line will also change in response to the voltage fluctuation. Due to the existence of the RC load, the change in current will cause power consumption on the resistor, and the faster the voltage changes, the faster the current changes, and the greater the power consumption. When the voltage on the differential signal line remains stable, the current on the signal line also remains stable, and the power consumption generated on the resistor is minimized.

[0040] In this embodiment, the timing controller detects whether the picture to be displayed is a continuously repeated picture. If it is a continuously repeated picture, a differential signal carrying a locking signal is sent to the driver. If it is not a continuously repeated picture, a differential signal without a locking signal is sent to the driver. The differential signal includes voltage data (i.e., a voltage signal) corresponding to the picture.

[0041] The driver can determine whether the currently transmitted picture data is a continuously repeated picture by determining whether the received differential signal includes a locking signal. If the differential signal includes a locking signal, the locking signal and the voltage signal in the differential signal are sent to the voltage locking circuit according to a preset signal transmission strategy. If the differential signal does not include a locking signal, the differential signal of each frame of the picture is transmitted and processed in a conventional manner.

[0042] In the preset signal transmission strategy provided in the present application, the voltage signal that can represent the picture to be displayed is first processed and converted through various components on the first transmission circuit, and transmitted to the voltage locking circuit, and then transmitted to the display panel through the voltage locking circuit, so that the display panel can be driven to display the first frame of the repeated and continuous picture to be displayed; then the locking signal is transmitted to the voltage locking circuit through the second transmission circuit, and after receiving the locking signal, the voltage locking circuit locks the voltage signal output to the display panel, and continuously transmits the voltage signal to the display panel, so that the display panel continues to display the subsequent frames of the repeated and continuous picture. By transmitting different data signals through two different transmission circuits, it is still possible to drive the display panel to continuously display repeated and continuous pictures, and it is possible to reduce the power consumption generated by the complete processing flow of the differential signal of each frame of the picture through the same transmission circuit while ensuring the display effect.

[0043] As an optional embodiment, a differential signal is transmitted to a voltage locking circuit according to a preset signal transmission strategy, including: a driver transmits a voltage signal to the voltage locking circuit through a first transmission circuit; the driver transmits a locking signal to the voltage locking circuit through a second transmission circuit, wherein when the second transmission circuit is enabled, each component on the first transmission circuit is in a sleep state.

[0044] The voltage signal of the differential signal is first transmitted to the voltage locking circuit through the first transmission circuit, which can ensure that the voltage signal is converted and processed by various components on the first transmission circuit, thereby obtaining a voltage signal that can be used by the display panel.

[0045] After the voltage signal is sent to the voltage locking circuit through the first transmission circuit, the voltage locking circuit transmits the processed voltage signal to the display panel to drive the display panel to display the first frame of the continuously repeated picture. Then the locking signal is transmitted to the voltage locking circuit through the second transmission circuit. When the voltage locking circuit receives the locking signal, the locking signal triggers the locking mechanism in the circuit. At this time, the voltage locking circuit locks the signal output, causing the circuit output to be locked at a stable voltage value (that is, the value of the processed voltage signal). This stable voltage value is continuously transmitted to the display panel. Since the voltage value is locked, the display panel will continue to display the same picture corresponding to the picture data before locking.

[0046] The voltage locking circuit can lock the circuit output according to the preset logic. At this time, the voltage locking circuit will not output a locking signal to the display panel, but will release the charge through the capacitor to output the previously stored and sent voltage signal.

[0047] When the second transmission circuit is enabled, each component of the first transmission circuit enters a dormant state, which can reduce the operating power consumption when the components of the first transmission circuit are used to process the voltage signal each time, compared with the prior art.

[0048] As an optional embodiment, after the driver transmits the locking signal to the voltage locking circuit through the second transmission circuit, the method also includes: if the timing controller detects that the next frame to be displayed is different from the continuously repeated frame being displayed, a lock release signal is sent to the driver; the driver controls the second transmission circuit to close according to the lock release signal.

[0049] In the conventional technical means, the timing controller sends each data item (differential signal, including the positive phase part data_P and the negative phase part data_N)) one by one, such as Figure 2A As shown, data1, data2, data3 ... dataM are sent in sequence, and in the technical solution provided by this application, as Figure 2BAs shown, for continuously repeated images, the timing controller only needs to send data1 and HOLD signals. When it detects that the next frame to be displayed is different from the continuously repeated image being displayed, the timing controller will send a lock release signal, i.e., UNHOLD signal, to the driver, and then send a new image signal (dataN+1) to the driver. After receiving the lock release signal, the driver temporarily turns off the second transmission circuit, and then uses the first transmission circuit to convert dataN+1.

[0050] This embodiment can be specified in the communication protocol agreed upon by the timing controller and the driver. When the timing controller detects that data1, data2, data3...dataN are exactly the same, the timing controller will send a HOLD signal (lock signal) after transmitting data1. This means that starting from data2, the timing controller will no longer continue to send the same data, but will send a fixed potential (usually a high level or a low level) until the screen data changes.

[0051] When the image to be displayed changes, the timing controller promptly sends a lock release signal to the driver, causing the voltage lock circuit to exit the lock mechanism. When the driver receives the next frame of differential signals, it can perform new analysis and data transmission on the differential signals, ensuring that the display of consecutively repeated images will not affect the display of subsequent new images.

[0052] As an optional embodiment, the method also includes: providing a polarity reversal signal to the driver at preset time intervals through a timing controller, wherein the preset time duration is the cumulative time duration of a target number of frames, and the polarity reversal signal is used to switch the voltage polarity; the driver outputs a voltage signal of corresponding polarity to the display panel under the control of the polarity reversal signal.

[0053] The polarity voltage of the liquid crystal panel refers to the positive and negative polarity of the voltage applied to the liquid crystal material when driving the liquid crystal display. The reason why the voltage supplied to the liquid crystal panel needs a polarity range is to improve the liquid crystal polarization phenomenon caused by the long-term application of the same polarity voltage on both ends of the liquid crystal. However, as the refresh rate of the display system increases, the frequency of liquid crystal flipping does not need to be as fast as the refresh rate. Based on this, the present application also provides an embodiment of reducing power consumption by extending the polarity flipping period of the driver output channel.

[0054] The preset duration provided in this application is the cumulative duration of the target number of frames. The amount of extension of the cycle depends on the cumulative duration of the target number of frames. The target number of frames can be set according to actual needs.

[0055] The driver will monitor the polarity reversal signal from the timing controller and change the voltage polarity of its output data according to the signal. Since the cycle of the polarity reversal signal is doubled, the voltage polarity reversal cycle of the driver output data will also be extended accordingly.

[0056] Figure 3 The polarity reversal diagram provided for this application shows that in a conventional scheme, POL (Pixel Output Latch) will switch H / L once in each frame, and the voltage output by the driver to the display panel will also change accordingly. When POL is reversed, the polarity of channel Y output by the driver will also switch (usually the voltage between GM1 to GM7 is used as the positive polarity voltage of the liquid crystal panel, and GM8 to GM14 is used as the negative polarity voltage of the liquid crystal panel).

[0057] In the embodiment provided in the present application, the period of the polarity reversal signal transmitted by the timing controller to the driver is extended (doubled, even tripled or quadrupled), so that the polarity reversal period of the driver output channel Y is also lengthened, and the voltage reversal of the panel supplied per unit time is reduced, thereby reducing power consumption.

[0058] The present application adopts a driving method, including: detecting whether the picture to be displayed is a continuously repeated picture; if the picture to be displayed is a continuously repeated picture, sending a differential signal to the driver through a timing controller, wherein the differential signal includes a locking signal and a voltage signal corresponding to the continuously repeated picture; when the driver detects that the differential signal carries the locking signal, the differential signal is transmitted to the voltage locking circuit according to a preset signal transmission strategy; the voltage signal corresponding to the continuously repeated picture is continuously transmitted to the display panel through the voltage locking circuit to drive the display panel to continuously display the continuously repeated picture. When the timing controller detects that the picture to be displayed is a continuously repeated picture, the differential signal carrying the locking signal is sent to the driver, and the driver transmits the voltage signal and the locking signal in the differential signal to the voltage locking circuit in sequence according to the preset signal transmission strategy, and replaces the processing flow of the complete voltage signal when displaying the repeated picture by transmitting a fixed locking signal, so that the voltage locking circuit continues to transmit the voltage signal to the display panel after receiving the locking signal, so as to drive the display panel to continuously display the continuously repeated picture, which can reduce power consumption and ensure that the display effect is not affected.

[0059] According to another aspect of the embodiment of the present application, the present application provides a driving circuit for driving a display panel, such as Figure 4 As shown, the driving circuit includes:

[0060] A timing controller 401 and a driver 402, wherein the driver 402 is connected to the timing controller 401 and the display panel 901 respectively, and the driver 402 includes a voltage locking circuit and at least one transmission circuit;

[0061] The timing controller 401 is used to detect whether the picture to be displayed is a continuously repeated picture; if the picture to be displayed is a continuously repeated picture, a differential signal is sent to the driver 402, wherein the differential signal includes a locking signal and a voltage signal corresponding to the continuously repeated picture;

[0062] Driver 402 is used to transmit the differential signal to the voltage locking circuit according to a preset signal transmission strategy when it is detected that the differential signal carries a locking signal; the voltage signal corresponding to the continuously repeated image is continuously transmitted to the display panel through the voltage locking circuit to drive the display panel 901 to continuously display the continuously repeated image.

[0063] The signal transmission between the timing controller and the driver is the key link to ensure the correct presentation of the display image. Figure 5 The figure is a schematic diagram of signal transmission between the timing controller and the driver. As shown in the figure, the sending end of the timing controller sends the image data and control signal to the receiving end of the driver through the differential signal line. When the voltage on the differential signal line changes, the power consumption is the largest, and when the voltage on the differential signal line remains unchanged, the power consumption is the smallest.

[0064] When the images to be displayed are repeated images, if the driver processes and transmits the continuous and identical differential signals sent by the timing controller one by one, multiple components are required to perform the same signal processing steps, which will generate greater power consumption.

[0065] The technical purpose of the present application is to control the voltage change of the driver output to be as small as possible while reducing the power consumption of each component, thereby achieving the technical effect of reducing the power consumption of the entire display process.

[0066] The differential signal sent by the timing controller to the driver carries a locking signal. The driver will first perform a series of normal processing on the voltage signal in the differential signal (implemented by various components on the first transmission circuit), and then transmit the processed voltage signal to the voltage locking circuit, and then transmit it to the display panel for display; then the driver will directly transmit the locking signal to the voltage locking circuit through the second transmission circuit, and the voltage locking circuit will lock the output signal according to the pre-configured logic. In this process, the power consumption generated by the processing of the differential signal by various components is actually avoided. At this time, the voltage locking circuit still transmits the voltage signal corresponding to the differential signal to the display panel, and the display panel can still continue to display the same pictures.

[0067] Optionally, if the next picture is not a repeated picture, the timing controller may directly send a new differential signal corresponding to the next picture to the driver. After receiving the new differential signal, the driver will automatically unlock the original signal output and process the new differential signal.

[0068] As an optional embodiment, the first transmission circuit includes a data interface, a shift register, a data register, a line latch and a resistive digital-to-analog converter. The data interface is respectively connected to the controller of the driver and the shift register, the shift register is connected to the data register, the data register is connected to the line latch, the line latch is connected to the resistive digital-to-analog converter, and the resistive digital-to-analog converter is connected to the voltage locking circuit.

[0069] Transmitting the voltage signal of the differential signal to the voltage locking circuit through the first transmission circuit can ensure that the differential signal is processed by the first transmission circuit, thereby obtaining a voltage signal that can be used by the display panel.

[0070] The data interface is used to receive the voltage signal in the differential signal sent by the timing controller and convert it into a parallel digital signal. Through the data interface, the voltage signal in the differential signal can be decoded and converted into a parallel data signal that can be recognized by the driver.

[0071] The shift register is used to transfer the parallel data signals received from the data interface one by one according to the clock pulse, and load them into the corresponding output channels in sequence. The parallel data signals are shifted into the shift register in sequence according to the clock pulse sequence. This process is equivalent to distributing the continuous data signal to each corresponding pixel row or column, ensuring that the data is output correctly in time sequence.

[0072] The data register is used to temporarily store the data output from the shift register and stabilize the data at a specific timing for subsequent processing. In the data register, the data signal output by the shift register will be temporarily stored to ensure that the signal remains consistent and stable before being output to the next level (row latch).

[0073] The line latch is used to latch all data signals of the current row, ensuring that the data of all pixels in the row are updated at the same time, and can ensure that the temporarily stored data is output to the pixels of the entire row at the same time. When all data registers have completed data loading, the line latch will latch the entire row of data and prepare to transmit the data to the next step of the driving circuit.

[0074] The level shifter is used to convert the low-voltage logic signal inside the driver into the higher voltage signal required by the panel pixel to drive the actual pixel. The pixels in the display panel usually require a higher voltage to adjust the brightness or switch state. The latched signal will be sent to the level shifter, which will convert the low-voltage signal into a high-voltage signal suitable for the panel operating voltage, preparing for the next level of analog processing.

[0075] The Resistor Digital-to-Analog Converter (R-DAC) is used to convert the digital signal output from the level converter into an analog voltage signal. This analog signal is used to accurately control the brightness and color of each pixel. The digital signal after level conversion is converted into an analog signal in the R-DAC, and the output voltage value corresponds to the brightness and color information of each pixel on the display.

[0076] In the display panel driving, the differential signal sent by the timing controller is gradually processed into an analog voltage signal that finally drives the pixel through multiple components on the first transmission circuit. Each component plays a key role in the signal transmission chain to ensure the conversion from digital signal to analog signal.

[0077] As an optional embodiment, the second transmission circuit includes a data interface and a wire, and the second transmission circuit is used to directly transmit signals between the controller and the voltage locking circuit.

[0078] The locking signal is transmitted to the voltage locking circuit through the second transmission circuit. At this time, the various components of the first transmission circuit enter a sleep state, which can reduce the operating power consumption of the components, and the voltage locking circuit can lock the circuit output according to the preset logic. At this time, the locking signal will not be output to the display panel, but the previously stored voltage signal will be output by releasing the charge through the capacitor.

[0079] No components are set on the second transmission circuit, and the second transmission circuit only includes a data interface and wires. When it is necessary to send a voltage signal of a continuously repeated image to the display panel (at this time, the first frame of the continuously repeated image has been processed and transmitted), the locking signal is directly transmitted through the second transmission circuit. At this time, there is no need to use the various components on the first transmission circuit as mentioned above to perform signal processing, which can greatly reduce the power consumption caused by the operation of the components.

[0080] The driver uses different signal transmission circuits to transmit voltage signals and locking signals to the voltage locking circuit in sequence, and controls the components on the transmission circuit to remain in a dormant state when not in use, which not only simplifies the processing flow of the complete differential signal, but also reduces the consumption of components on the transmission circuit. The corresponding voltage signal is transmitted to the display panel through the voltage locking circuit, so that the display panel can display each picture normally, solving the problem of how to reduce power consumption without affecting the display effect.

[0081] As an optional embodiment, the voltage locking circuit is specifically used to transmit a voltage signal to the display panel when a voltage signal is received, so as to drive the display panel to start displaying continuously repeated images; when a locking signal is received, the signal transmitted to the display panel is locked, and the voltage signal is continuously transmitted to the display panel to drive the display panel to continuously display continuously repeated images.

[0082] When the voltage locking circuit receives the voltage signal, the voltage locking circuit does not lock the signal output, and transmits the voltage signal to the display panel through the first transmission circuit in the circuit.

[0083] When the voltage locking circuit receives a locking signal, the circuit will lock the signal output. The locking signal triggers the locking mechanism in the circuit, causing the circuit output to be locked at a stable voltage value (corresponding to the processed voltage signal). This stable voltage value is continuously transmitted to the display panel.

[0084] If the voltage locking circuit does not lock the signal output, the display panel can display normal images according to the received voltage signal; if the voltage locking circuit locks the signal output, the display panel displays a static image according to the received stable voltage signal. Since the voltage value is locked, the display panel will continue to display the same image corresponding to the image data before locking.

[0085] As an optional embodiment, the voltage locking circuit includes a switch tube and a capacitor, the control end of the switch tube is connected to the second transmission circuit, one end of the switch tube is connected to the first transmission circuit, the other end of the switch tube is connected to one end of the capacitor, and the other end of the capacitor is grounded. The switch tube is used to turn on when receiving a voltage signal and output a voltage signal; it is turned off when receiving a locking signal, and at the same time, the output voltage is kept stable by releasing the charge through the capacitor. The capacitor is used to pre-store the charge corresponding to the voltage signal.

[0086] When the first transmission circuit sends a voltage signal to the switch tube, the switch tube is turned on, the voltage signal can be transmitted through the switch tube, and at this time the capacitor can store electrical energy from the first transmission circuit.

[0087] When the second transmission circuit sends a locking signal to the control end of the switch tube, the switch tube will be cut off, and the signal transmission will be blocked. At this time, the capacitor can play a role in maintaining voltage stability, thereby achieving signal locking.

[0088] The other end of the capacitor is grounded to form a discharge loop for the capacitor.

[0089] When a voltage signal is received, the switch tube is turned on, allowing the voltage signal to pass and output the voltage value; when a lock signal is received, the switch tube is turned off, blocking the transmission of the voltage signal, and releasing the charge through the capacitor to output a stable voltage signal.

[0090] When the switch is on, the capacitor is charged and stores the charge corresponding to the input voltage signal; when the switch is off, the capacitor acts as a voltage source and releases the stored charge to maintain the stability of the output voltage.

[0091] Figure 6 The schematic diagram of the composition of the driver provided for the present application, as shown in the figure, the timing controller (not shown in the figure) sends a differential signal to the driver, if the differential signal does not include a lock signal, the differential signal is transmitted to the voltage lock circuit through the first transmission circuit (including the data interface-shift register-data register-line latch-resistive digital-to-analog converter in the figure), if the differential signal includes a lock signal, the voltage signal in the differential signal is first transmitted to the voltage lock circuit through the first transmission circuit, and then the lock signal (i.e., HOLD in the figure) is transmitted to the voltage lock circuit through the second transmission circuit (including the data interface-wire in the figure), and no components are set on the second transmission circuit. The connection part between the resistive digital-to-analog converter and the output buffer in the figure is a voltage lock circuit, and the voltage lock circuit includes multiple groups of switch tubes and capacitors, and the capacitors are connected in parallel with the switch tubes. When the switch tubes are turned off, the capacitors will release their pre-stored charges to maintain the stability of the output voltage, which helps to reduce voltage fluctuations and improve the stability of the circuit. In addition, when the voltage locking circuit transmits signals to the display panel, it needs to pass through an output buffer, which is used to buffer the analog signal converted by the resistive digital-to-analog converter to ensure that the signal can be stably transmitted to the pixel array of the display panel without interference or loss.

[0092] When it is detected that the continuous images to be displayed are the same image, the signals are transmitted to the voltage locking circuit in sequence according to different signal transmission strategies, and the components on the transmission line are controlled to remain in a dormant state when not in use. This simplifies the processing flow of the complete differential signal and reduces the consumption of components on the transmission line. The corresponding voltage signal is transmitted to the display panel through the voltage locking circuit, so that the display panel can display each image normally, thus solving the problem of how to reduce power consumption without affecting the display effect.

[0093] As another optional embodiment, the present application also provides another schematic diagram of the composition of the driver, which can be Figure 7 The drive shown is locked, and then combined with Figure 7 and Figure 2B The data item transmission diagram of the data locking scheme is explained: after receiving the differential signal carrying the locking signal, the driver will lock the first data item data1 signal and continue to output data1 to the data register, even if it does not receive data2, data3 and other signals later. When different data (i.e. dataN+1) appears, the timing controller will send an UNHOLD signal at the position where dataN was originally transmitted to notify the driver to release the data lock. At this time, the driver will normally receive and process the differential signals from dataN+1 to dataM.

[0094] The present application uses a driving circuit for driving a display panel, the driving circuit includes: a timing controller and a driver, the driver is connected to the timing controller and the display panel respectively, the driver includes a voltage locking circuit and at least one transmission circuit; the timing controller is used to detect whether the picture to be displayed is a continuously repeated picture; if the picture to be displayed is a continuously repeated picture, a differential signal is sent to the driver, wherein the differential signal includes a locking signal and a voltage signal corresponding to the continuously repeated picture; the driver is used to transmit the differential signal to the voltage locking circuit according to a preset signal transmission strategy when it is detected that the differential signal carries the locking signal; the voltage signal corresponding to the continuously repeated picture is continuously transmitted to the display panel through the voltage locking circuit to drive the display panel to continuously display the continuously repeated picture. When the timing controller detects that the picture to be displayed is a continuously repeated picture, a differential signal carrying a locking signal is sent to the driver. The driver transmits the voltage signal and the locking signal in the differential signal to the voltage locking circuit in sequence according to a preset signal transmission strategy. The fixed locking signal is transmitted to replace the processing flow of the complete voltage signal when displaying repeated pictures. The voltage locking circuit continues to transmit the voltage signal to the display panel after receiving the locking signal, so as to drive the display panel to continuously display the continuously repeated pictures. This can reduce power consumption and ensure that the display effect is not affected.

[0095] According to another aspect of the embodiment of the present application, the present application provides a driving device, such as Figure 8 As shown, including:

[0096] A detection module 802 is used to detect whether the picture to be displayed is a continuous and repeated picture;

[0097] The sending module 804 is used to send a differential signal to the driver through the timing controller if the picture to be displayed is a continuously repeated picture, wherein the differential signal includes a locking signal and a voltage signal corresponding to the continuously repeated picture;

[0098] A first transmission module 806, configured for the driver to transmit the differential signal to the voltage locking circuit according to a preset signal transmission strategy when the driver detects that the differential signal carries a locking signal;

[0099] The second transmission module 808 is used to continuously transmit the voltage signal corresponding to the continuously repeated pictures to the display panel through the voltage locking circuit, so as to drive the display panel to continuously display the continuously repeated pictures.

[0100] It should be noted that the detection module 802 in this embodiment can be used to execute step 101 in the embodiment of the present application, the sending module 804 in this embodiment can be used to execute step 103 in the embodiment of the present application, the first transmission module 806 in this embodiment can be used to execute step 105 in the embodiment of the present application, and the second transmission module 806 in this embodiment can be used to execute step 107 in the embodiment of the present application.

[0101] Optionally, the first transmission module 806 is also used to drive the driver to transmit a voltage signal to a voltage locking circuit through a first transmission circuit; the driver transmits a locking signal to the voltage locking circuit through a second transmission circuit, wherein each component on the first transmission circuit is in a sleep state when the second transmission circuit is enabled.

[0102] Optionally, the device also includes a release module, which is used to send a lock release signal to the driver after the driver transmits the lock signal to the voltage lock circuit through the second transmission circuit. If the timing controller detects that the next frame to be displayed is different from the continuously repeated frame being displayed, the driver controls the second transmission circuit to close according to the lock release signal.

[0103] Optionally, the device also includes a switching module, which is used to provide a polarity reversal signal to the driver through a timing controller at preset time intervals, wherein the preset time duration is the cumulative time duration of a target number of frames, and the polarity reversal signal is used to switch the voltage polarity; the driver outputs a voltage signal of corresponding polarity to the display panel under the control of the polarity reversal signal.

[0104] It should be noted here that the examples and application scenarios implemented by the above modules and corresponding steps are the same, but are not limited to the contents disclosed in the above embodiments.

[0105] According to another aspect of the embodiments of the present application, the present application provides a display device, such as Fig. 9As shown, it includes: a display panel 901 and the above-mentioned driving circuit 902, and the driving circuit 902 is electrically connected to the display panel 901.

[0106] The driving circuit 902 is used to execute the above driving method.

[0107] When the embodiments of the present application are specifically implemented, reference may be made to the above-mentioned embodiments, which have corresponding technical effects.

[0108] It is understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit may be implemented in one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in the present application, or a combination thereof.

[0109] For software implementation, the technology described herein can be implemented by a unit that performs the functions described herein. The software code can be stored in a memory and executed by a processor. The memory can be implemented in the processor or outside the processor.

[0110] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0111] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0112] In the embodiments provided in the present 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 only schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation, such as multiple modules 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 an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0113] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0114] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0115] If the function 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 such an understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium, including several instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk or an optical disk. It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the term "include", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such a process, method, article or device. Without more constraints, an element defined by the phrase "comprising a..." does not exclude the existence of other identical elements in the process, method, article or apparatus comprising the element.

[0116] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A driving method, characterized in that: include: Detecting whether the picture to be displayed is a continuous and repeated picture; If the picture to be displayed is the continuously repeated picture, a differential signal is sent to the driver through the timing controller, wherein the differential signal includes a locking signal and a voltage signal corresponding to the continuously repeated picture; When the driver detects that the differential signal carries the locking signal, the driver transmits the differential signal to the voltage locking circuit according to a preset signal transmission strategy; The voltage signal corresponding to the continuously repeated picture is continuously transmitted to the display panel through the voltage locking circuit, so as to drive the display panel to continuously display the continuously repeated picture.

2. The driving method according to claim 1, characterized in that: The step of transmitting the differential signal to the voltage locking circuit according to a preset signal transmission strategy includes: The driver transmits the voltage signal to the voltage locking circuit through a first transmission circuit; The driver transmits the locking signal to the voltage locking circuit through a second transmission circuit, wherein each component on the first transmission circuit is in a dormant state when the second transmission circuit is enabled.

3. The driving method according to claim 2, characterized in that: After the driver transmits the locking signal to the voltage locking circuit through the second transmission circuit, the method further includes: If the timing controller detects that the next frame to be displayed is different from the continuously repeated frame being displayed, a lock release signal is sent to the driver; The driver controls the second transmission circuit to be turned off according to the lock release signal.

4. The driving method according to claim 1, characterized in that: The method further comprises: Providing a polarity reversal signal to the driver through the timing controller at preset time intervals, wherein the preset time duration is the cumulative time duration of the target number of frames, and the polarity reversal signal is used to switch the voltage polarity; The driver outputs the voltage signal of corresponding polarity to the display panel under the control of the polarity reversal signal.

5. A driving circuit for driving a display panel, characterized in that: The driving circuit comprises: a timing controller and a driver, wherein the driver is connected to the timing controller and the display panel respectively, and the driver comprises a voltage locking circuit and at least one transmission circuit; The timing controller is used to detect whether the picture to be displayed is a continuously repeated picture; if the picture to be displayed is the continuously repeated picture, a differential signal is sent to the driver, wherein the differential signal includes a locking signal and a voltage signal corresponding to the continuously repeated picture; The driver is used to transmit the differential signal to the voltage locking circuit according to a preset signal transmission strategy when it is detected that the differential signal carries the locking signal; and continuously transmit the voltage signal corresponding to the continuously repeated image to the display panel through the voltage locking circuit to drive the display panel to continuously display the continuously repeated image.

6. The driving circuit according to claim 5, characterized in that: The driver is also used to transmit the voltage signal to the voltage locking circuit through a first transmission circuit, wherein the first transmission circuit includes a data interface, a shift register, a data register, a line latch and a resistive digital-to-analog converter, wherein the data interface is respectively connected to the controller of the driver and the shift register, the shift register is connected to the data register, the data register is connected to the line latch, the line latch is connected to the resistive digital-to-analog converter, and the resistive digital-to-analog converter is connected to the voltage locking circuit.

7. The driving circuit according to claim 6, characterized in that: The driver is also used to transmit the locking signal to the voltage locking circuit through a second transmission circuit, wherein when the second transmission circuit is enabled, each component on the first transmission circuit is in a sleep state, and the second transmission circuit includes a data interface and a wire, and the second transmission circuit is used to directly transmit signals between the controller and the voltage locking circuit.

8. The driving circuit according to claim 5, characterized in that: The voltage locking circuit is specifically used to transmit the voltage signal to the display panel when receiving the voltage signal, so as to drive the display panel to start displaying the continuously repeated image; and to lock the signal transmitted to the display panel when receiving the locking signal, and to continuously transmit the voltage signal to the display panel, so as to drive the display panel to continuously display the continuously repeated image.

9. The driving circuit according to claim 8, characterized in that: The voltage locking circuit includes a switch tube and a capacitor. The control end of the switch tube is connected to the second transmission circuit, one end of the switch tube is connected to the first transmission circuit, the other end of the switch tube is connected to one end of the capacitor, and the other end of the capacitor is grounded. The switch tube is used to turn on when receiving the voltage signal and output the voltage signal; it is turned off when receiving the locking signal, and at the same time, the output voltage is kept stable by releasing the charge through the capacitor. The capacitor is used to pre-store the charge corresponding to the voltage signal.

10. A display device, characterized in that: include: A display panel and a driving circuit as claimed in any one of claims 5 to 9, wherein the driving circuit is electrically connected to the display panel.

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