Drive control device, drive control method and display device

Abstract

The drive control device, drive control method and display device provided by the embodiments of the present disclosure can output a backlight stop signal first and then a voltage stop signal in order to reduce power consumption when it is determined that the user has left the display panel when the display panel is turned on. The backlight control circuit stops working in response to the backlight stop signal, so that the backlight module stops emitting light and the display panel turns off. The power conversion circuit stops outputting the driving voltage that drives the display panel to display the picture in response to the voltage stop signal. When it is determined that the user returns to the front of the display panel, the voltage start signal can be output first and then the backlight start signal can be output. The backlight control circuit starts working in response to the backlight start signal, so that the backlight module starts emitting light. The power conversion circuit outputs a driving voltage in response to the voltage start signal, so that the display panel can start displaying the picture.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a drive control device, a drive control method and a display device. Background Art

[0002] In displays such as liquid crystal displays (LCDs), multiple pixel units are generally included. Each pixel unit may include: a red sub-pixel, a green sub-pixel, and a blue sub-pixel. By controlling the brightness corresponding to each sub-pixel, the desired color is mixed to display a color image. Summary of the invention

[0003] The drive control device provided by the embodiment of the present disclosure includes:

[0004] The first control circuit is configured to output a backlight stop signal and a voltage stop signal when it is determined that the user leaves the display panel when the display panel is turned on; and output a backlight start signal and a voltage start signal when it is determined that the user returns to the front of the display panel; wherein the output time of the backlight stop signal is before the output time of the voltage stop signal, and the output time of the backlight start signal is after the output time of the voltage start signal;

[0005] a backlight control circuit configured to receive the backlight stop signal and stop working in response to the backlight stop signal; and receive the backlight start signal and start working in response to the backlight start signal;

[0006] The power conversion circuit is configured to receive the voltage stop signal and, in response to the voltage stop signal, stop outputting the driving voltage for driving the display panel to display the picture; and to receive the voltage start signal and, in response to the voltage start signal, output the driving voltage.

[0007] In some examples, the driving voltage includes a gamma voltage, a power supply analog voltage, and a power supply digital voltage;

[0008] The drive control device further includes: a source driving circuit, wherein the source driving circuit is configured to apply a data voltage to a data line in the display panel according to display data, the gamma voltage, the power supply analog voltage, and the power supply digital voltage;

[0009] The power conversion circuit is further configured to, in response to the voltage stop signal, stop outputting the gamma voltage, the power supply analog voltage and the power supply digital voltage in sequence; and, in response to the voltage start signal, first start outputting the power supply digital voltage and then start outputting the gamma voltage and the power supply analog voltage at the same time.

[0010] In some examples, the driving voltage further includes a first reference voltage and a second reference voltage;

[0011] The drive control device further includes: a level conversion circuit, the level conversion circuit being configured to output a drive clock signal according to a reference clock control signal, the first reference voltage and the second reference voltage, so as to control the display panel to load a gate scanning signal to a gate line;

[0012] The power conversion circuit is further configured to stop outputting the first reference voltage and the second reference voltage at the same time after stopping outputting the gamma voltage and before stopping outputting the power supply analog voltage; and after starting to output the power supply analog voltage, first start to output the second reference voltage and then start to output the first reference voltage.

[0013] In some examples, the driving voltage further includes a common electrode voltage;

[0014] The power conversion circuit is further configured to stop outputting the common electrode voltage while stopping outputting the gamma voltage; and start outputting the common electrode voltage while starting outputting the first reference voltage.

[0015] In some examples, the power conversion circuit is further configured to trigger an output discharge enable signal to control sub-pixels in the display panel to release charge while stopping outputting the gamma voltage.

[0016] In some examples, the power conversion circuit outputs the discharge enable signal through a reset pin.

[0017] In some examples, the first control circuit is further configured to output a discharge control signal when it is determined that the user leaves the display panel when the display panel is powered on; wherein the output time of the backlight stop signal is before the output time of the output discharge control signal, and the output time of the discharge control signal is before the output time of the voltage stop signal;

[0018] The power conversion circuit is further configured to receive the discharge control signal, and output a discharge enable signal in response to the discharge control signal to control the sub-pixels in the display panel to release charges.

[0019] In some examples, the power conversion circuit outputs the discharge enable signal through a reset pin.

[0020] In some examples, the first control circuit is further configured to output a discharge enable signal to control the sub-pixels in the display panel to release charge when it is determined that the user has left the display panel when the display panel is powered on; wherein the output time of the backlight stop signal is before the output time of the output discharge enable signal, and the output time of the discharge enable signal is before the output time of the voltage stop signal.

[0021] In some examples, the drive control device further includes: a sensor circuit;

[0022] The sensor circuit is configured to determine whether the user is in front of the display panel when the display panel is turned on; when it is determined that the user leaves the display panel, send a first determination signal to the first control circuit; when it is determined that the user returns to the front of the display panel, send a second determination signal to the first control circuit;

[0023] The first control circuit is further configured to determine that the user leaves the display panel when the first determination signal is received; and to determine that the user returns to the front of the display panel when the second determination signal is received.

[0024] The drive control method provided by the embodiment of the present disclosure includes:

[0025] The first control circuit outputs a backlight stop signal and a voltage stop signal when it is determined that the user leaves the display panel when the display panel is turned on; wherein the output time of the backlight stop signal is before the output time of the voltage stop signal;

[0026] The backlight control circuit receives the backlight stop signal and stops working in response to the backlight stop signal;

[0027] The power conversion circuit receives the voltage stop signal, and in response to the voltage stop signal, stops outputting the driving voltage for driving the display panel to display a picture;

[0028] The first control circuit outputs a backlight start signal and a voltage start signal when determining that the user returns to the front of the display panel; wherein the output time of the backlight start signal is later than the output time of the voltage start signal;

[0029] The power conversion circuit receives the voltage start signal and outputs the driving voltage in response to the voltage start signal;

[0030] The backlight control circuit receives the backlight start signal and starts working in response to the backlight start signal.

[0031] In some examples, the driving voltage includes a gamma voltage, a power supply analog voltage, and a power supply digital voltage;

[0032] The stopping of outputting a driving voltage for driving the display panel to display a picture includes:

[0033] The gamma voltage, the power supply analog voltage and the power supply digital voltage are stopped from being output in sequence, and at the same time when the gamma voltage is stopped from being output, a discharge enable signal is triggered to output so as to control the sub-pixels in the display panel to release charges.

[0034] In some examples, when the display panel is powered on, the first control circuit further outputs a discharge control signal when it is determined that the user leaves the display panel; wherein the output time of the backlight stop signal is before the output time of the output discharge control signal, and the output time of the discharge control signal is before the output time of the voltage stop signal;

[0035] The power conversion circuit also receives the discharge enable signal, and in response to the discharge control signal, outputs a discharge enable signal to control the sub-pixels in the display panel to release charges.

[0036] In some examples, the first control circuit also outputs a discharge enable signal to control the sub-pixels in the display panel to release charge when the display panel is turned on and determines that the user has left the display panel; wherein the output time of the backlight stop signal is before the output time of the output discharge enable signal, and the output time of the discharge enable signal is before the output time of the voltage stop signal.

[0037] The display device provided by the embodiment of the present disclosure includes the above-mentioned drive control device. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1a Some structural schematic diagrams of the drive control device in the embodiment of the present disclosure;

[0039] Figure 1b Some structural schematic diagrams of display devices in embodiments of the present disclosure;

[0040] Figure 2 Some structural schematic diagrams of display panels in the embodiments of the present disclosure;

[0041] Figure 3a are some signal timing diagrams in the embodiments of the present disclosure;

[0042] Figure 3b are other signal timing diagrams in the embodiments of the present disclosure;

[0043] Figure 4Some structural schematic diagrams of the drive control device in the embodiment of the present disclosure;

[0044] Figure 5a Some signal timing diagrams in the embodiments of the present disclosure;

[0045] Figure 5b Some signal timing diagrams in the embodiments of the present disclosure;

[0046] Figure 6 is a flow chart of a driving control method in an embodiment of the present disclosure;

[0047] Figure 7 are some other structural schematic diagrams of the drive control device in the embodiments of the present disclosure;

[0048] Figure 8 Some further structural schematic diagrams of the drive control device in the embodiment of the present disclosure. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. And in the absence of conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present disclosure.

[0050] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0051] It should be noted that the sizes and shapes of the figures in the accompanying drawings do not reflect the actual proportions, and are only intended to illustrate the present disclosure. The same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions.

[0052] like Figure 1a to Figure 2The display device provided by the embodiment of the present disclosure includes a display panel 100, a backlight module 200 and a drive control device 300. Among them, the display panel 100 may include: a plurality of pixel units arranged in an array, a plurality of gate lines GA (for example, GA1, GA2, GA3, GA4), a plurality of data lines DA (for example, DA1, DA2, DA3) and a gate drive circuit 110. The gate drive circuit 110 is coupled to the gate lines GA1, GA2, GA3, and GA4 respectively. Exemplarily, each pixel unit includes a plurality of sub-pixels SPX. For example, the pixel unit may include a red sub-pixel, a green sub-pixel and a blue sub-pixel, so that red, green and blue can be mixed to achieve color display. Alternatively, the pixel unit may also include a red sub-pixel, a green sub-pixel, a blue sub-pixel and a white sub-pixel, so that red, green, blue and white can be mixed to achieve color display. Of course, in actual applications, the luminous color of the sub-pixel in the pixel unit can be designed and determined according to the actual application environment, and is not limited here.

[0053] like Figure 2 , each sub-pixel SPX may include a transistor 01 and a pixel electrode 02. Among them, a row of sub-pixels SPX corresponds to a gate line, and a column of sub-pixels SPX corresponds to a data line. The gate of transistor 01 is electrically connected to the corresponding gate line, the source of transistor 01 is electrically connected to the corresponding data line, and the drain of transistor 01 is electrically connected to the pixel electrode 02. It should be noted that the pixel array structure disclosed in the present invention can also be a double-gate structure, that is, two gate lines are set between two adjacent rows of sub-pixels. This arrangement can reduce half of the data lines, that is, some adjacent columns of sub-pixels contain data lines, and some adjacent columns of sub-pixels do not include data lines. The specific sub-pixel arrangement structure and data lines, and the arrangement of the scanning lines are not limited.

[0054] In the embodiment of the present disclosure, the display panel in the embodiment of the present disclosure may be a liquid crystal display panel. Exemplarily, the liquid crystal display panel generally includes an upper substrate and a lower substrate of a pair of boxes, and liquid crystal molecules encapsulated between the upper substrate and the lower substrate. When displaying a picture, since there is a voltage difference between the data voltage loaded on the pixel electrode of each sub-pixel SPX and the common electrode voltage VCOM on the common electrode, the voltage difference can form an electric field, so that the liquid crystal molecules are deflected under the action of the electric field. Since the deflection degree of the liquid crystal molecules is different due to the electric field of different intensities, the transmittance of the sub-pixel SPX is different, so that the light emitted by the backlight module can achieve different grayscale brightness through the sub-pixels SPX with different transmittances, thereby realizing the picture display.

[0055] In actual applications, with the increase of refresh rate, resolution and display screen size, the power consumption of display panel when displaying images has become a major display problem. For example, for high refresh rate products with a refresh rate of 480Hz, the heavy load power consumption is about 7W, the power consumption of the backlight module using mini led as the light source is basically above 20W, and the power consumption of the backlight module using other light sources other than mini led is about 4W. Therefore, when the display device is displayed for a long time, especially when people temporarily leave but forget to set the sleep mode, the display device may not need to display the image but do not want to shut down. If the display device is still displaying the image normally, a lot of power consumption will be wasted.

[0056] In the embodiments of the present disclosure, Figure 1a and Figure 1b As shown, the driving control device 300 may include: a first control circuit 310, a backlight control circuit 320 and a power conversion circuit 330. The first control circuit 310 is configured to output a backlight stop signal VBN and a voltage stop signal VPN when the display panel 100 is turned on and it is determined that the user leaves the display panel 100; and output a backlight start signal VBQ and a voltage start signal VPQ when it is determined that the user returns to the front of the display panel 100; wherein the output time of the backlight stop signal VBN is before the output time of the voltage stop signal VPN, and the output time of the backlight start signal VBQ is after the output time of the voltage start signal VPQ. When the backlight control circuit 320 is working, it can drive the backlight module 200 to emit light. In addition, the backlight control circuit 320 is configured to receive the backlight stop signal VBN and stop working in response to the backlight stop signal VBN; and receive the backlight start signal VBQ and start working in response to the backlight start signal VBQ. Furthermore, the power conversion circuit 330 is configured to receive a voltage stop signal VPN, and in response to the voltage stop signal VPN, stop outputting a driving voltage for driving the display panel 100 to display a picture; and receive a voltage start signal VPQ, and in response to the voltage start signal VPQ, output a driving voltage.

[0057] The above-mentioned drive control device provided by the embodiment of the present disclosure, when the display panel is turned on, when it is determined that the user leaves the display panel, in order to reduce power consumption, can first output the backlight stop signal VBN and then output the voltage stop signal VPN. When the backlight control circuit receives the backlight stop signal VBN, it stops working in response to the backlight stop signal VBN, so that the backlight module stops emitting light and the display panel turns off the screen. When the power conversion circuit receives the voltage stop signal VPN, it stops outputting the driving voltage that drives the display panel to display the screen in response to the voltage stop signal VPN, so that the backlight control circuit and the power conversion circuit can be combined and controlled to reduce power consumption. In addition, the backlight control circuit is controlled to stop working first, and then the power conversion circuit is controlled to stop working, which can avoid display abnormalities. And, when it is determined that the user returns to the front of the display panel, the voltage start signal VPQ can be output first and then the backlight start signal VBQ can be output. When the backlight control circuit receives the backlight start signal VBQ, it starts working in response to the backlight start signal VBQ, so that the backlight module starts emitting light. When receiving the voltage start signal VPQ, the power conversion circuit outputs a driving voltage in response to the voltage start signal VPQ, so that the display panel can start displaying images.

[0058] In some embodiments of the present disclosure, the first control circuit may include a TCON (Timing Controller). Of course, the specific implementation of the first control circuit may also be implemented in other ways, which are not limited here.

[0059] In some embodiments of the present disclosure, the backlight control circuit may include a backlight driver IC (Integrated Circuit). Of course, the specific implementation of the backlight control circuit may also be implemented in other ways, which are not limited here.

[0060] In some embodiments of the present disclosure, the power conversion circuit may include a PMIC (Power Management Integrated Circuit). Of course, the specific implementation of the power conversion circuit may also be implemented in other ways, which are not limited here.

[0061] In some embodiments of the present disclosure, Figure 1a to Figure 2As shown, the driving control device 300 may further include: a sensor circuit 340, a system circuit 350, a level conversion circuit 360 and a source driving circuit 370. The sensor circuit 340 is configured to determine whether the user is in front of the display panel 100 when the display panel 100 is turned on; when it is determined that the user leaves the display panel 100, send a first determination signal to the first control circuit 310; when it is determined that the user returns to the front of the display panel 100, send a second determination signal to the first control circuit 310. The first control circuit 310 is further configured to determine that the user leaves the display panel 100 when the first determination signal is received when the display panel 100 is turned on; and when the second determination signal is received, determine that the user returns to the front of the display panel 100. The source driving circuit 370 and the display panel 100 may be connected in a bonding manner so that the source driving circuit 370 is coupled to the data lines DA1, DA2, and DA3.

[0062] Exemplarily, the sensor circuit may be at least one of an infrared sensor circuit and an image sensor circuit (eg, a camera). Of course, the specific implementation of the sensor circuit may also be implemented in other ways, which are not limited here.

[0063] For example, Figures 1a to 3bAs shown, the system circuit 350 is configured to output a power supply voltage VCC (e.g., 3.3V) and obtain display data of a picture to be displayed, and send the display data to the first control circuit 310. The power conversion circuit 330 is configured to receive the power supply voltage VCC (e.g., 3.3V), power itself, and output a timing power supply voltage VTCON (e.g., 1.8V and 0.9V), a gamma voltage VGM, a power supply analog voltage VSM, a power supply digital voltage VSZ, a first reference voltage VREF1, a second reference voltage VREF2 (the second reference voltage VREF2 is less than the first reference voltage VREF1) and a common electrode voltage VCOM according to the power supply voltage VCC. The first control circuit 310 is configured to receive a timing power supply voltage VTCON (e.g., 1.8V and 0.9V) to power itself. In addition, the first control circuit 310 and the system circuit 350 can be connected through an eDP interface so that the first control circuit 310 and the system circuit 350 communicate through the eDP interface. The first control circuit 310 receives display data through the eDP interface, and sends reference clock control signals cks1-cks12 (cks1-cks12 are only for illustration, and of course, other reference clock control signals may also be used, which are not limited here) to the level conversion circuit 360 according to the received display data, and sends corresponding display data VDA to the source driving circuit 370. The level conversion circuit 360 receives the first reference voltage VREF1, the second reference voltage VREF2, and the reference clock control signals cks1-cks12, and generates clock signals ck1-ck12 according to the received first reference voltage VREF1, the second reference voltage VREF2, and the reference clock control signals cks1-cks12 to control the display panel 100 to load the gate scanning signals ga1-ga12 to the gate lines. Specifically, the generated clock signals ck1-ck12 are sent to the gate driving circuit 110. The gate drive circuit 110 outputs gate scan signals ga1-ga12 to the gate lines according to the received clock signals ck1-ck12, so that the high level (or low level) of the gate scan signals ga1-ga12 controls the transistors in the sub-pixels to turn on. Each clock signal ck1-ck12 input to the gate drive circuit 110 corresponds to a reference clock control signal cks1-cks12, and the clock signals ck1-ck12 input to the gate drive circuit 110 have the same timing as the corresponding reference clock control signals cks1-cks12. Among them, the first reference voltage VREF1 is used to generate the high level voltage of the clock signals ck1-ck12, that is, the high level voltage of the clock signals ck1-ck12 is the first reference voltage VREF1. The second reference voltage VREF2 is used to generate the low level voltage of the clock signals ck1-ck12, that is, the low level voltage of the clock signals ck1-ck12 is the second reference voltage VREF2.In this way, the high-level voltage of the gate scanning signals ga1-ga12 is also the first reference voltage VREF1, and the low-level voltage is also the second reference voltage VREF2. In addition, the source driving circuit 370 is configured to receive the display data VDA, the gamma voltage VGM, the power supply analog voltage VSM, and the power supply digital voltage VSZ, and load the data voltage to the data line in the display panel 100 according to the display data VDA, the gamma voltage VGM, the power supply analog voltage VSM, and the power supply digital voltage VSZ. In this way, when the transistor in the sub-pixel is turned on, the data voltage on the data line can be input into the pixel electrode, so that the sub-pixel can achieve its brightness, thereby realizing the function of picture display.

[0064] Exemplarily, the level conversion circuit 360 may include a level converter (Level Shift, LS). Of course, the specific implementation of the level conversion circuit 360 may also be implemented in other ways, which are not limited here. Figure 3a and Figure 3b , the level conversion circuit 360 generates the clock signal ck1 according to the timing of the reference clock control signal cks1, and the first reference voltage VREF1 and the second reference voltage VREF2. The level conversion circuit 360 generates the clock signal ck2 according to the timing of the reference clock control signal cks2, and the first reference voltage VREF1 and the second reference voltage VREF2. The level conversion circuit 360 generates the clock signal ck3 according to the timing of the reference clock control signal cks3, and the first reference voltage VREF1 and the second reference voltage VREF2. ... The level conversion circuit 360 generates the clock signal ck12 according to the timing of the reference clock control signal cks12, and the first reference voltage VREF1 and the second reference voltage VREF2.

[0065] Exemplarily, the source driving circuit 370 may include a source driving IC. Of course, the specific implementation of the source driving circuit 370 may also be implemented in other ways, which are not limited here.

[0066] Exemplarily, the system circuit 350 may include a system on chip (SOC). Of course, the specific implementation of the system circuit 350 may also be implemented in other ways, which are not limited here. Exemplarily, the sensor circuit 340 may be integrated into the system circuit 350 to improve the integration of the system circuit 350. Alternatively, the sensor circuit 340 may also be integrated into the first control circuit 310 to improve the integration of the first control circuit 310.

[0067] In some embodiments of the present disclosure, Figure 4As shown, the system circuit 350 is configured to output a backlight supply voltage VBG (e.g., 12V), a backlight trigger control signal BGS, and a backlight brightness control signal PWM. The backlight driver chip receives a backlight supply voltage (e.g., 12V) to power itself. The first control circuit 310 also receives a backlight trigger control signal BGS and a backlight brightness control signal PWM through the eDP interface, and sends the received backlight brightness control signal PWM to the backlight driver chip. In addition, the first control circuit 310 also responds to the backlight trigger control signal BGS to turn on the function of controlling the backlight driver chip. The first control circuit 310 can output a backlight start signal VBQVBEN. The backlight control circuit receives the backlight start signal VBQVBEN, and responds to the backlight start signal VBQVBEN to turn on the function of controlling the backlight module.

[0068] In some embodiments of the present disclosure, Figure 1b As shown, the driving voltage may include a gamma voltage VGM, a power supply analog voltage VSM, and a power supply digital voltage VSZ. In order to reduce the impact of the gamma voltage VGM, the power supply analog voltage VSM, and the power supply digital voltage VSZ on the device when they stop outputting, as shown in FIG. Figure 5a , the power conversion circuit 330 is further configured to stop outputting the gamma voltage VGM, the power supply analog voltage VSM and the power supply digital voltage VSZ in order in response to the voltage stop signal VPN. That is, the power conversion circuit 330 stops outputting the gamma voltage VGM first, then stops outputting the power supply analog voltage VSM, and finally stops outputting the power supply digital voltage VSZ in response to the voltage stop signal VPN. Further, in some embodiments of the present disclosure, the driving voltage also includes a first reference voltage VREF1 and a second reference voltage VREF2. In order to reduce the impact on the device when the first reference voltage VREF1, the second reference voltage VREF2, the gamma voltage VGM, the power supply analog voltage VSM and the power supply digital voltage VSZ stop outputting, the power conversion circuit 330 is further configured to stop outputting the first reference voltage VREF1 and the second reference voltage VREF2 at the same time after stopping outputting the gamma voltage VGM and before stopping outputting the power supply analog voltage VSM. That is, in response to the voltage stop signal VPN, the power conversion circuit 330 first stops outputting the gamma voltage VGM, then stops outputting the first reference voltage VREF1 and the second reference voltage VREF2, then stops outputting the power supply analog voltage VSM, and finally stops outputting the power supply digital voltage VSZ.

[0069] In some embodiments of the present disclosure, Figure 1b As shown, the driving voltage may include a gamma voltage VGM, a power supply analog voltage VSM, and a power supply digital voltage VSZ. In order to reduce the impact of the gamma voltage VGM, the power supply analog voltage VSM, and the power supply digital voltage VSZ on the device when they start to be output, as shown in FIG. Figure 5b , the power conversion circuit 330 is further configured to respond to the voltage start signal VPQ, first turn on the output power supply digital voltage VSZ, and then turn on the output gamma voltage VGM and the power supply analog voltage VSM at the same time. Further, in some embodiments of the present disclosure, the driving voltage also includes a first reference voltage VREF1 and a second reference voltage VREF2. In order to reduce the impact of the first reference voltage VREF1, the second reference voltage VREF2, the gamma voltage VGM, the power supply analog voltage VSM and the power supply digital voltage VSZ on the device when they start to be output, the power conversion circuit 330 is further configured to turn on the output second reference voltage VREF2 first after turning on the output power supply analog voltage VSM, and then turn on the output first reference voltage VREF1.

[0070] In some embodiments of the present disclosure, the driving voltage may also include a common electrode voltage VCOM. In order to avoid the impact on the device when stopping or starting to output the above voltage, such as Figure 1b and Figure 5a As shown, the power conversion circuit 330 is further configured to stop outputting the common electrode voltage VCOM while stopping outputting the gamma voltage VGM. Figure 1b and Figure 5b As shown, the power conversion circuit 330 is further configured to start outputting the common electrode voltage VCOM while starting outputting the first reference voltage VREF1 .

[0071] In some embodiments of the present disclosure, the discharge enable signal VON triggering time may be the same as the time of stopping the output of the gamma voltage VGM, that is, the discharge enable signal VON is triggered by the voltage change mode when the gamma voltage VGM stops outputting. For example, Figure 5a The power conversion circuit 330 is also configured to trigger the output of the discharge enable signal VON while stopping the output of the gamma voltage VGM, so as to control the sub-pixels in the display panel 100 to release the charge. Exemplarily, the discharge enable signal VON is sent to the level conversion circuit 360 and the source driving circuit 370. After receiving the discharge enable signal VON, the level conversion circuit 360 outputs a high level voltage to the gate driving circuit 110. The gate driving circuit 110 loads a high level to the gate line according to the received high level voltage to control the transistors in the sub-pixels to be turned on and release the charge.

[0072] In some embodiments of the present disclosure, Figure 1b and Figure 4As shown, the power conversion circuit 330 has a reset pin PRE, which is coupled to the level conversion circuit 360 and the source driving circuit 370 respectively. When the driving control device 300 is turned on, after the power conversion circuit 330 receives the power supply voltage VCC, it will output a reset signal VRE through the reset pin PRE, and the reset signal VRE is sent to the level conversion circuit 360 and the source driving circuit 370 respectively. When the level conversion circuit 360 receives the level conversion circuit 360, it is reset. When the source driving circuit 370 receives the level conversion circuit 360, it is reset. Since the display panel 100 is in the power-on state, it means that the system circuit 350 is outputting the power supply voltage VCC, so the reset signal VRE will not be output through the reset pin PRE. When the power conversion circuit 330 stops outputting the gamma voltage VGM, it can output the discharge enable signal VON through the reset pin PRE. In this way, there is no need to design additional pins, which reduces the difficulty of the process.

[0073] The present disclosure provides a drive control method, such as Figure 6 As shown, the following steps may be included:

[0074] S10: When the display panel is powered on, the first control circuit outputs a backlight stop signal and a voltage stop signal when it is determined that the user leaves the display panel, wherein the output time of the backlight stop signal is before the output time of the voltage stop signal.

[0075] S20: The backlight control circuit receives a backlight stop signal, and stops working in response to the backlight stop signal.

[0076] S30 , the power conversion circuit receives a voltage stop signal, and in response to the voltage stop signal, stops outputting a driving voltage for driving the display panel to display an image.

[0077] S40: When determining that the user returns to the front of the display panel, the first control circuit outputs a backlight start signal and a voltage start signal, wherein the output time of the backlight start signal is later than the output time of the voltage start signal.

[0078] S50: The power conversion circuit receives a voltage start signal, and outputs a driving voltage in response to the voltage start signal.

[0079] S60: The backlight control circuit receives a backlight start signal and starts working in response to the backlight start signal.

[0080] In some examples, stopping outputting a driving voltage that drives a display panel to display an image includes: stopping outputting a gamma voltage, a power supply analog voltage, and a power supply digital voltage in sequence, and while stopping outputting the gamma voltage, triggering an output discharge enable signal to control sub-pixels in the display panel to release charge.

[0081] Combine the following Figure 1b The structure of the drive control device 300 is used to illustrate the above-mentioned drive control method provided by the embodiment of the present disclosure.

[0082] When the display panel 100 is turned on, the sensor circuit 340 can detect the front of the display panel 100 in real time to determine whether the user is in front of the display panel 100. When it is detected that the user leaves the display panel 100, a first determination signal is sent to the first control circuit 310. When the first control circuit 310 receives the first determination signal, it determines that the user leaves the display panel 100, and then outputs the backlight stop signal VBN. The backlight control circuit 320 receives the backlight stop signal VBN, and stops working in response to the backlight stop signal VBN, and the backlight module 200 stops emitting light. After a first set time (the first set time can be 2ms, 5ms, etc., of course, it can also be determined according to the needs of actual applications, and is not limited here.), the first control circuit 310 outputs a voltage stop signal VPN. The power conversion circuit 330 receives the voltage stop signal VPN, and in response to the voltage stop signal VPN, first stops outputting the common electrode voltage VCOM and the gamma voltage VGM at the same time. At the same time, the discharge enable signal VON is output through the reset pin PRE, and the discharge enable signal VON is sent to the level conversion circuit 360 and the source drive circuit 370. After receiving the discharge enable signal VON, the level conversion circuit 360 outputs a high level voltage to the gate drive circuit 110. The gate drive circuit 110 loads a high level to the gate line according to the received high level voltage to control the transistors in the sub-pixel to be turned on and release the charge. After 1ms (of course, it can also be other times), the first reference voltage VREF1 and the second reference voltage VREF2 are stopped from being output at the same time. After 1ms (of course, it can also be other times), the power supply analog voltage VSM is stopped from being output. After 1ms (of course, it can also be other times), the power supply digital voltage VSZ is stopped from being output. It should be noted that the power conversion circuit 330 does not stop outputting the timing power supply voltage VTCON for powering the first control circuit 310, so that the first control circuit 310 can be powered, thereby communicating with the system circuit 350.

[0083] The sensor circuit 340 can continue to detect the front of the display panel 100 in real time to determine whether the user is in front of the display panel 100. When it is detected that the user returns to the front of the display panel 100, a second determination signal is sent to the first control circuit 310. When the first control circuit 310 receives the second determination signal, it determines that the user returns to the front of the display panel 100, and then outputs the voltage start signal VPQ. The power conversion circuit 330 receives the voltage start signal VPQ, and in response to the voltage start signal VPQ, first turns on the output power supply digital voltage VSZ, and then after 7ms (of course, it can also be other times), turns on the output power supply analog voltage VSM and the gamma voltage VGM at the same time. After 10ms (of course, it can also be other times), the output of the second reference voltage VREF2 is turned on. After 8ms (of course, it can also be other times), the reset pin PRE is changed from the state of outputting the discharge enable signal VON (for example, the pull-up state) to the state of not outputting the discharge enable signal VON (for example, the pull-down state). After 7ms (or other time), the first reference voltage VREF1 and the common electrode voltage VCOM are turned on and output at the same time. After the first set time (the first set time can be 2ms, 5ms, etc., and can also be determined according to the needs of the actual application, which is not limited here), the first control circuit 310 outputs the backlight start signal VBK. The backlight control circuit 320 receives the backlight start signal VBK, and starts working in response to the backlight start signal VBK to drive the backlight module 200 to emit light.

[0084] The embodiments of the present disclosure provide structural schematic diagrams of other drive control devices, such as Figure 7 As shown. It is a modification of the implementation method in the above embodiment. The following only describes the differences between this embodiment and the above embodiment, and the similarities are not repeated here.

[0085] In some embodiments of the present disclosure, Figure 7As shown, the first control circuit 310 is also configured to output a discharge control signal VONC when it is determined that the user leaves the display panel 100 when the display panel 100 is turned on; wherein the output time of the backlight stop signal VBN is before the output time of the discharge control signal VONC, and the output time of the discharge control signal VONC is before the output time of the voltage stop signal VPN. The power conversion circuit 330 is also configured to receive the discharge control signal, and in response to the discharge control signal, output a discharge enable signal VON to control the sub-pixels in the display panel 100 to release the charge. Exemplarily, the power conversion circuit 330 sends the discharge enable signal VON to the level conversion circuit 360 and the source drive circuit 370. After receiving the discharge enable signal VON, the level conversion circuit 360 outputs a high level voltage to the gate drive circuit 110. The gate drive circuit 110 loads a high level to the gate line according to the received high level voltage to control the transistors in the sub-pixels to be turned on and release the charge.

[0086] For example, Figure 7 As shown, the first control circuit 310 and the power conversion circuit 330 are connected by an IIC signal line 380. Furthermore, the first control circuit 310 transmits a discharge control signal VONC through the IIC signal line 380. The power conversion circuit 330 receives the discharge control signal VONC through the IIC signal line 380 to start the function of controlling charge release.

[0087] In some embodiments of the present disclosure, Figure 7 As shown, the power conversion circuit 330 has a reset pin PRE, which is coupled to the level conversion circuit 360 and the source driving circuit 370 respectively. When the driving control device 300 is turned on, after the power conversion circuit 330 receives the power supply voltage VCC, it will output a reset signal VRE through the reset pin PRE, and the reset signal VRE is sent to the level conversion circuit 360 and the source driving circuit 370 respectively. When the level conversion circuit 360 receives the level conversion circuit 360, it is reset. When the source driving circuit 370 receives the level conversion circuit 360, it is reset. Since the display panel 100 is in the power-on state, it means that the system circuit 350 is outputting the power supply voltage VCC, so the reset signal VRE will not be output through the reset pin PRE. When the power conversion circuit 330 stops outputting the gamma voltage VGM, it can output the discharge enable signal VON through the reset pin PRE. In this way, there is no need to design additional pins, which reduces the difficulty of the process.

[0088] In some embodiments of the present disclosure, the driving control method further includes: when the first control circuit 310 determines that the user leaves the display panel 100 when the display panel 100 is turned on, it also outputs a discharge control signal; wherein the output time of the backlight stop signal VBN is before the output time of the discharge control signal, and the output time of the discharge control signal is before the output time of the voltage stop signal VPN. The power conversion circuit 330 also receives the discharge enable signal VON, and in response to the discharge control signal, outputs the discharge enable signal VON to control the sub-pixels in the display panel 100 to release charge.

[0089] Combine the following Figure 7 The structure of the drive control device is used to illustrate the above-mentioned drive control method provided by the embodiment of the present disclosure.

[0090] When the display panel 100 is turned on, the sensor circuit 340 can detect the front of the display panel 100 in real time to determine whether the user is in front of the display panel 100. When it is detected that the user leaves the display panel 100, a first determination signal is sent to the first control circuit 310. When the first control circuit 310 receives the first determination signal, it determines that the user leaves the display panel 100, and then outputs the backlight stop signal VBN. The backlight control circuit 320 receives the backlight stop signal VBN, and stops working in response to the backlight stop signal VBN, and the backlight module 200 stops emitting light. After a third set time (the third set time can be 2ms, 5ms, etc., of course, it can also be determined according to the needs of actual applications, and is not limited here.), the first control circuit 310 outputs a discharge control signal. The power conversion circuit 330 receives the discharge enable signal VON, and in response to the discharge control signal, outputs the discharge enable signal VON through the reset pin PRE. The discharge enable signal VON is sent to the level conversion circuit 360 and the source drive circuit 370. After receiving the discharge enable signal VON, the level conversion circuit 360 outputs a high level voltage to the gate drive circuit 110. The gate drive circuit 110 loads a high level to the gate line according to the received high level voltage to control the transistors in the sub-pixel to be turned on and release the charge. After the fourth set time (the fourth set time can be 2ms, 5ms, etc., of course, it can also be determined according to the needs of the actual application, and is not limited here.), the first control circuit 310 outputs a voltage stop signal VPN. The power conversion circuit 330 receives the voltage stop signal VPN, and in response to the voltage stop signal VPN, first stops outputting the common electrode voltage VCOM and the gamma voltage VGM at the same time. After 1ms (of course it can also be other times), the first reference voltage VREF1 and the second reference voltage VREF2 are stopped from being output at the same time. After 1ms (of course it can also be other times), the power supply analog voltage VSM is stopped from being output. After 1ms (of course it can also be other times), the power supply digital voltage VSZ is stopped from being output. It should be noted that the power conversion circuit 330 does not stop outputting the timing power supply voltage VTCON for supplying power to the first control circuit 310 , so that the first control circuit 310 can supply power and thus communicate with the system circuit 350 .

[0091] The sensor circuit 340 can continue to detect the front of the display panel 100 in real time to determine whether the user is in front of the display panel 100. When it is detected that the user returns to the front of the display panel 100, a second determination signal is sent to the first control circuit 310. When the first control circuit 310 receives the second determination signal, it determines that the user returns to the front of the display panel 100, and then outputs the voltage start signal VPQ. The power conversion circuit 330 receives the voltage start signal VPQ, and in response to the voltage start signal VPQ, first turns on the output power supply digital voltage VSZ, and then after 7ms (of course, it can also be other times), turns on the output power supply analog voltage VSM and the gamma voltage VGM at the same time. After 10ms (of course, it can also be other times), the output of the second reference voltage VREF2 is turned on. After 8ms (of course, it can also be other times), the reset pin PRE is changed from the state of outputting the discharge enable signal VON (for example, the pull-up state) to the state of not outputting the discharge enable signal VON (for example, the pull-down state). After 7ms (or other time), the first reference voltage VREF1 and the common electrode voltage VCOM are turned on and output at the same time. After the first set time (the first set time can be 2ms, 5ms, etc., and can also be determined according to the needs of the actual application, which is not limited here), the first control circuit 310 outputs the backlight start signal VBK. The backlight control circuit 320 receives the backlight start signal VBK, and starts working in response to the backlight start signal VBK to drive the backlight module 200 to emit light.

[0092] The present disclosure provides some structural schematic diagrams of the drive control device, such as Figure 8 As shown. It is a modification of the implementation method in the above embodiment. The following only describes the differences between this embodiment and the above embodiment, and the similarities are not repeated here.

[0093] In some embodiments of the present disclosure, Figure 8 As shown, the first control circuit 310 is also configured to output a discharge enable signal VON to control the sub-pixels in the display panel 100 to release charge when it is determined that the user leaves the display panel 100 when the display panel 100 is turned on; wherein the output time of the backlight stop signal VBN is before the output time of the discharge enable signal VON, and the output time of the discharge enable signal VON is before the output time of the voltage stop signal VPN. Exemplarily, the first control circuit 310 sends the discharge enable signal VON to the level conversion circuit 360 and the source drive circuit 370. After receiving the discharge enable signal VON, the level conversion circuit 360 outputs a high level voltage to the gate drive circuit 110. The gate drive circuit 110 loads a high level to the gate line according to the received high level voltage to control the transistors in the sub-pixels to be turned on and release charge.

[0094] Exemplarily, the first control circuit 310 is connected to the level conversion circuit 360 and the source driving circuit 370 using a GPIO (General Purpose Input / Output Port). In addition, the first control circuit 310 transmits the discharge control signal through the GPIO pin in the GPIO. The level conversion circuit 360 and the source driving circuit 370 receive the discharge control signal through the GPIO pin.

[0095] Combine the following Figure 8 The structure of the drive control device is used to illustrate the above-mentioned drive control method provided by the embodiment of the present disclosure.

[0096] When the display panel 100 is turned on, the sensor circuit 340 can detect the front of the display panel 100 in real time to determine whether the user is in front of the display panel 100. When it is detected that the user leaves the display panel 100, a first determination signal is sent to the first control circuit 310. When the first control circuit 310 receives the first determination signal, it determines that the user leaves the display panel 100, and then outputs the backlight stop signal VBN. The backlight control circuit 320 receives the backlight stop signal VBN, and stops working in response to the backlight stop signal VBN, and the backlight module 200 stops emitting light. After the fifth set time (the fifth set time can be 2ms, 5ms, etc., of course, it can also be determined according to the needs of the actual application, and is not limited here.), the first control circuit 310 outputs the discharge enable signal VON through the GPIO pin. The discharge enable signal VON is sent to the level conversion circuit 360 and the source drive circuit 370. After receiving the discharge enable signal VON, the level conversion circuit 360 outputs a high level voltage to the gate drive circuit 110. The gate drive circuit 110 applies a high level to the gate line according to the received high level voltage to control the transistors in the sub-pixel to open and release the charge. After the sixth setting time (the fourth setting time can be 2ms, 5ms, etc., and of course it can also be determined according to the needs of the actual application, which is not limited here.), the first control circuit 310 outputs a voltage stop signal VPN. The power conversion circuit 330 receives the voltage stop signal VPN, and in response to the voltage stop signal VPN, first stops outputting the common electrode voltage VCOM and the gamma voltage VGM at the same time. After 1ms (of course it can also be other times), the output of the first reference voltage VREF1 and the second reference voltage VREF2 is stopped at the same time. After 1ms (of course it can also be other times), the output of the power supply analog voltage VSM is stopped. After 1ms (of course it can also be other times), the output of the power supply digital voltage VSZ is stopped. It should be noted that the power conversion circuit 330 does not stop outputting the timing power supply voltage VTCON for powering the first control circuit 310, so that the first control circuit 310 can be powered, thereby communicating with the system circuit 350.

[0097] The sensor circuit 340 can continue to detect the front of the display panel 100 in real time to determine whether the user is in front of the display panel 100. When it is detected that the user returns to the front of the display panel 100, a second determination signal is sent to the first control circuit 310. When the first control circuit 310 receives the second determination signal, it determines that the user returns to the front of the display panel 100, and then outputs the voltage start signal VPQ. The power conversion circuit 330 receives the voltage start signal VPQ, and in response to the voltage start signal VPQ, first turns on the output power supply digital voltage VSZ, and then after 7ms (of course, it can also be other times), turns on the output power supply analog voltage VSM and the gamma voltage VGM at the same time. After 10ms (of course, it can also be other times), the output second reference voltage VREF2 is turned on. After 8ms (of course, it can also be other times), the GPIO pin is changed from the state of outputting the discharge enable signal VON (for example, the pull-up state) to the state of not outputting the discharge enable signal VON (for example, the pull-down state). After 7ms (or other time), the first reference voltage VREF1 and the common electrode voltage VCOM are turned on and output at the same time. After the first set time (the first set time can be 2ms, 5ms, etc., and can also be determined according to the needs of the actual application, which is not limited here), the first control circuit 310 outputs the backlight start signal VBK. The backlight control circuit 320 receives the backlight start signal VBK, and starts working in response to the backlight start signal VBK to drive the backlight module 200 to emit light.

[0098] Based on the same disclosed concept, the embodiment of the present disclosure also provides a display device, including the above-mentioned display panel, backlight module and drive control device provided in the embodiment of the present disclosure. The principle of solving the problem by the display device is similar to that of the above-mentioned drive control device, so the implementation of the display device can refer to the implementation of the above-mentioned drive control device, and the repeated parts will not be repeated here.

[0099] In specific implementation, in the embodiments of the present disclosure, the display device may be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, etc. Other essential components of the display device are well understood by those skilled in the art, and are not described in detail here, nor should they be used as limitations to the present disclosure.

[0100] The drive control device, drive control method and display device provided by the embodiments of the present disclosure can output a backlight stop signal first and then a voltage stop signal in order to reduce power consumption when it is determined that the user has left the display panel when the display panel is turned on. The backlight control circuit stops working in response to the backlight stop signal, so that the backlight module stops emitting light and the display panel turns off. The power conversion circuit stops outputting the driving voltage that drives the display panel to display the picture in response to the voltage stop signal. When it is determined that the user returns to the front of the display panel, the voltage start signal can be output first and then the backlight start signal can be output. The backlight control circuit starts working in response to the backlight start signal, so that the backlight module starts emitting light. The power conversion circuit outputs a driving voltage in response to the voltage start signal, so that the display panel can start displaying the picture.

[0101] Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is also intended to include these modifications and variations.

Claims

1. A drive control device, It is characterized in that include: The first control circuit is configured to output a backlight stop signal and a voltage stop signal when it is determined that the user leaves the display panel when the display panel is turned on; and output a backlight start signal and a voltage start signal when it is determined that the user returns to the front of the display panel; wherein the output time of the backlight stop signal is before the output time of the voltage stop signal, and the output time of the backlight start signal is after the output time of the voltage start signal; a backlight control circuit configured to receive the backlight stop signal and stop working in response to the backlight stop signal; and receive the backlight start signal and start working in response to the backlight start signal; A power conversion circuit is configured to receive the voltage stop signal and, in response to the voltage stop signal, stop outputting a driving voltage for driving the display panel to display a picture; and receive the voltage start signal and, in response to the voltage start signal, output the driving voltage; Wherein, the driving voltage includes a gamma voltage, a power supply analog voltage and a power supply digital voltage; The power conversion circuit is further configured to, in response to the voltage stop signal, stop outputting the gamma voltage, the power supply analog voltage and the power supply digital voltage in sequence; and, in response to the voltage start signal, first start outputting the power supply digital voltage and then start outputting the gamma voltage and the power supply analog voltage at the same time.

2. The drive control device according to claim 1, It is characterized in that The driving control device further includes: a source driving circuit, wherein the source driving circuit is configured to apply a data voltage to a data line in the display panel according to display data, the gamma voltage, the power supply analog voltage, and the power supply digital voltage.

3. The drive control device according to claim 2, It is characterized in that The driving voltage further includes a first reference voltage and a second reference voltage; The drive control device further includes: a level conversion circuit, the level conversion circuit being configured to output a drive clock signal according to a reference clock control signal, the first reference voltage and the second reference voltage, so as to control the display panel to load a gate scanning signal to a gate line; The power conversion circuit is further configured to stop outputting the first reference voltage and the second reference voltage at the same time after stopping outputting the gamma voltage and before stopping outputting the power supply analog voltage; and after starting to output the power supply analog voltage, first start to output the second reference voltage and then start to output the first reference voltage.

4. The drive control device according to claim 3, It is characterized in that The driving voltage also includes a common electrode voltage; The power conversion circuit is further configured to stop outputting the common electrode voltage while stopping outputting the gamma voltage; and start outputting the common electrode voltage while starting outputting the first reference voltage.

5. The drive control device according to any one of claims 2 to 4, It is characterized in that The power conversion circuit is further configured to trigger an output discharge enable signal while stopping outputting the gamma voltage, so as to control the sub-pixels in the display panel to release charges.

6. The drive control device according to claim 5, It is characterized in that The power conversion circuit outputs the discharge enable signal through a reset pin.

7. The drive control device according to any one of claims 1 to 4, It is characterized in that The first control circuit is further configured to output a discharge control signal when it is determined that the user leaves the display panel when the display panel is powered on; wherein the output time of the backlight stop signal is before the output time of the discharge control signal, and the output time of the discharge control signal is before the output time of the voltage stop signal; The power conversion circuit is further configured to receive the discharge control signal, and output a discharge enable signal in response to the discharge control signal to control the sub-pixels in the display panel to release charges.

8. The drive control device according to claim 7, It is characterized in that The power conversion circuit outputs the discharge enable signal through a reset pin.

9. The drive control device according to any one of claims 1 to 4, It is characterized in that The first control circuit is also configured to output a discharge enable signal to control the sub-pixels in the display panel to release charge when it is determined that the user has left the display panel when the display panel is turned on; wherein the output time of the backlight stop signal is before the output time of the discharge enable signal, and the output time of the discharge enable signal is before the output time of the voltage stop signal.

10. The drive control device according to any one of claims 1 to 4, It is characterized in that The drive control device further includes: a sensor circuit; The sensor circuit is configured to determine whether the user is in front of the display panel when the display panel is turned on; when it is determined that the user leaves the display panel, send a first determination signal to the first control circuit; when it is determined that the user returns to the front of the display panel, send a second determination signal to the first control circuit; The first control circuit is further configured to determine that the user leaves the display panel when the first determination signal is received; and to determine that the user returns to the front of the display panel when the second determination signal is received.

11. A drive control method, It is characterized in that include: The first control circuit outputs a backlight stop signal and a voltage stop signal when the display panel is turned on and determines that the user leaves the display panel; wherein the output time of the backlight stop signal is before the output time of the voltage stop signal; The backlight control circuit receives the backlight stop signal and stops working in response to the backlight stop signal; The power conversion circuit receives the voltage stop signal, and in response to the voltage stop signal, stops outputting the driving voltage for driving the display panel to display a picture; The first control circuit outputs a backlight start signal and a voltage start signal when determining that the user returns to the front of the display panel; wherein the output time of the backlight start signal is later than the output time of the voltage start signal; The power conversion circuit receives the voltage start signal and outputs the driving voltage in response to the voltage start signal; The backlight control circuit receives the backlight start signal and starts working in response to the backlight start signal; Wherein, the driving voltage includes a gamma voltage, a power supply analog voltage and a power supply digital voltage; The step of stopping outputting a driving voltage for driving the display panel to display a picture includes: Stop outputting the gamma voltage, the power supply analog voltage and the power supply digital voltage in sequence; The step of outputting the driving voltage in response to the voltage start signal comprises: In response to the voltage start signal, the digital power supply voltage is first turned on for output, and then the gamma voltage and the analog power supply voltage are simultaneously turned on for output.

12. The drive control method according to claim 11, It is characterized in that The power conversion circuit triggers and outputs a discharge enable signal while stopping outputting the gamma voltage, thereby controlling the sub-pixels in the display panel to release charges.

13. The driving control method according to claim 11, It is characterized in that When the display panel is powered on, the first control circuit further outputs a discharge control signal when it is determined that the user leaves the display panel; wherein the output time of the backlight stop signal is before the output time of the discharge control signal, and the output time of the discharge control signal is before the output time of the voltage stop signal; The power conversion circuit also receives the discharge enable signal, and in response to the discharge control signal, outputs a discharge enable signal to control the sub-pixels in the display panel to release charges.

14. The driving control method according to claim 11, It is characterized in that The first control circuit also outputs a discharge enable signal to control the sub-pixels in the display panel to release charge when the display panel is turned on and determines that the user has left the display panel; wherein the output time of the backlight stop signal is before the output time of the discharge enable signal, and the output time of the discharge enable signal is before the output time of the voltage stop signal.

15. A display device, It is characterized in that It comprises a drive control device as described in any one of claims 1-10.

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