Display device and method for driving display device

Abstract

The invention discloses a display device and a driving method of the display device. The display device comprises a power management chip, a source electrode driving circuit connected with the power management chip and a display panel connected with the source electrode driving circuit, and the display panel comprises a plurality of display areas. The driving method of the display device comprises the following steps: the source electrode driving circuit detects whether a first power supply voltage from the power supply management chip is subjected to voltage drop or not; when the first power supply voltage drops, the source electrode driving circuit adjusts the driving capability of at least one display area in the display panel, so that the driving capability of the first display area in the display panel is smaller than the driving capability of the second display area. Wherein the first display area is a display area close to the source electrode driving circuit, and the second display area is a display area far away from the source electrode driving circuit. The abrupt change phenomenon of the data output signal of the source electrode driving circuit is reduced or avoided, so that the horizontal crosstalk is reduced or avoided, and the display effect is improved.

Description

Technical Field

[0001] This application relates to the field of display technologies, and particularly to a display device and a driving method thereof. Background Art

[0002] When the load in the active area (AA area) of the display panel is relatively heavy, when there is a large grayscale value switch in the display screen, such as switching from grayscale value 255 (white) to grayscale value 0 (black), the load of the power supply voltage is relatively large. In this case, the voltage drop may occur at the near and far ends of the wire on array (WOA), resulting in voltage drop at the output end of the same source driver integrated circuit (Source Driver Integrated Circuit, abbreviated as Source IC or Driver IC), which is likely to cause horizontal crosstalk (Horizontal Crosstalk, abbreviated as H-Crosstalk). This horizontal crosstalk is manifested as interference stripes or uneven brightness in the horizontal direction in the display screen, affecting the display effect. Summary of the Invention

[0003] Embodiments of this application provide a display device and a driving method thereof, which can reduce or avoid horizontal crosstalk and improve the display effect.

[0004] In a first aspect, embodiments of this application provide a driving method for a display device. The display device includes a power management chip, a source driver circuit connected to the power management chip, and a display panel connected to the source driver circuit. The display panel includes a plurality of display areas. The method includes: the source driver circuit detecting whether there is a voltage drop in a first power supply voltage from the power management chip; when there is a voltage drop in the first power supply voltage, the source driver circuit adjusting the driving ability of at least one of the display areas in the display panel, so that the driving ability of a first display area in the display panel is less than that of a second display area; where the first display area is the display area close to the source driver circuit, and the second display area is the display area far from the source driver circuit.

[0005] Optionally, the source driver circuit adjusting the driving ability of at least one display area in the display panel includes: the source driver circuit reducing the driving ability of the first display area; and / or, the source driver circuit increasing the driving ability of the second display area.

[0006] Optionally, the source driving circuit adjusts the driving capability of at least one display area in the display panel, including: the source driving circuit adjusts the driving capability of the display area according to the distance between the display area and the source driving circuit; wherein, the driving capability of the display area and the distance between the display area and the source driving circuit are in a positive correlation relationship.

[0007] Optionally, the source driving circuit adjusts the driving capability of at least one display area in the display panel, including: the source driving circuit adjusts the driving capability of the display area according to the voltage drop degree of the first power supply voltage; wherein, the adjustment amplitude of the driving capability of the display area and the voltage drop degree of the first power supply voltage are in a positive correlation relationship.

[0008] Optionally, the source driving circuit adjusts the driving capability of at least one display area in the display panel, including: the source driving circuit determines an initial adjustment value of the display area according to the distance between the display area and the source driving circuit; the source driving circuit determines a target adjustment value of the display area according to the voltage drop degree of the first power supply voltage and the initial adjustment value of the display area; the source driving circuit adjusts the driving capability of the display area according to the target adjustment value of the display area.

[0009] Optionally, the source driving circuit determines the target adjustment value of the display area according to the voltage drop degree of the first power supply voltage and the initial adjustment value of the display area, including: the source driving circuit determines a correction factor according to the voltage drop degree of the first power supply voltage; the source driving circuit determines the target adjustment value of the display area according to the correction factor and the initial adjustment value of the display area.

[0010] Optionally, the source driving circuit detects whether the first power supply voltage from the power management chip has a voltage drop, including: the source driving circuit determines whether the first power supply voltage has a voltage drop according to the first power supply voltage and a preset voltage threshold; wherein, when the first power supply voltage exceeds the preset voltage threshold, the source driving circuit determines that the first power supply voltage has a voltage drop.

[0011] Optionally, the first power supply voltage includes at least one of the following: analog power supply positive voltage, analog power supply negative voltage.

[0012] Optionally, the preset voltage threshold includes a first voltage threshold and a second voltage threshold; the source driver circuit determines whether the first power supply voltage has a voltage drop according to the first power supply voltage and the preset voltage threshold, including: the source driver circuit determines whether the first power supply voltage has a voltage drop according to the positive voltage of the analog power supply and the first voltage threshold, and the negative voltage of the analog power supply and the second voltage threshold; wherein, when the positive voltage of the analog power supply is less than the first voltage threshold, or the negative voltage of the analog power supply is greater than the second voltage threshold, the source driver circuit determines that the first power supply voltage has a voltage drop.

[0013] In a second aspect, an embodiment of the present application provides a display device, which includes a power management chip, a source driver circuit connected to the power management chip, and a display panel connected to the source driver circuit, and the display panel includes a plurality of display areas. The source driver circuit is configured to execute the driving method of the display device described in the first aspect above.

[0014] The beneficial effects provided by the embodiments of the present application at least include:

[0015] When the source driver circuit detects that the first power supply voltage from the power management chip has a voltage drop, it adjusts the driving capabilities of at least one display area in the display panel, so that the driving capability of the first display area close to the source driver circuit in the display panel is less than that of the second display area far from the source driver circuit. By adjusting the driving capabilities of at least one display area in the display panel when the first power supply voltage has a voltage drop, the embodiments of the present application can make the data output of the source driver circuit to different display areas in the display panel more stable, reduce or avoid the mutation phenomenon of the data output signal of the source driver circuit, thereby reducing or avoiding horizontal crosstalk and improving the display effect. In addition, the embodiments of the present application can save the debugging time and layout space of the display device, without increasing the cost of the display device, and have good applicability. Description of the Drawings

[0016] Figure 1 is a schematic diagram of a display device provided by an embodiment of the present application;

[0017] Figure 2 is a flowchart of a driving method of a display device provided by an embodiment of the present application;

[0018] Figure 3 is a schematic diagram of a first mapping relationship provided by an embodiment of the present application;

[0019] Figure 4 is a schematic diagram of a second mapping relationship provided by an embodiment of the present application;

[0020] Figure 5It is a schematic diagram of the screen improvement effect provided by the embodiments of the present application;

[0021] Figure 6 It is a schematic diagram of another screen improvement effect provided by the embodiments of the present application. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application. The described technical solutions are only used to explain and illustrate the idea of the present application, and should not be regarded as a limitation on the protection scope of the present application.

[0023] In addition, "a plurality of" in the embodiments of the present application means two or more. "First" and "second" in the embodiments of the present application are used to distinguish different technical features, and do not represent any order, quantity or importance.

[0024] The various embodiments provided by the present application are similar, and the features in different embodiments can be combined with each other.

[0025] The description order of the following embodiments does not limit the preferred order of the embodiments.

[0026] Please refer to Figure 1 , Figure 1 It is a schematic diagram of a display device provided by the embodiments of the present application. The display device includes an LCD (Liquid Crystal Display). It should be understood that this does not limit the present application. In actual applications, the display device may also include any one of the following: an AMOLED (Active Matrix Organic LightEmitting Diode) display, a Micro LED (Micro Light EmittingDiode) display, a Mini Led (Miniature Light Emitting Diode) display, etc.

[0027] As Figure 1 shown, the display device includes a power management chip 100, a source driver circuit 200 connected to the power management chip 100, and a display panel 300 connected to the source driver circuit 200. Among them, the source driver circuit 200 can be disposed on the display panel 300 or independent of the display panel 300. The embodiments of the present application do not limit this. In addition, one or more source driver circuits 200 may be included in the display device. Figure 1 Taking one source driver circuit 200 as an example, this does not limit the present application. As Figure 1As shown, the display panel 300 includes a plurality of pixel units 301. Each pixel unit 301 can be connected to the source driver circuit 200 through a data line DL. Thus, the source driver circuit 200 can drive the pixel unit 301 through the data line DL to enable the display panel 300 to display an image.

[0028] In addition, as Figure 1 shown, the display device may further include a gate driver circuit 400 and a timing controller 500. The gate driver circuit 400 is located on the display panel 300. The timing controller 500 is connected to the source driver circuit 200 and the power management chip 100. The power management chip 100 can supply power to the timing controller 500, the source driver circuit 200, etc., and provide a gamma voltage, etc. to the source driver circuit 200. The timing controller 500 can provide a timing signal to the gate driver circuit 400 to enable the gate driver circuit 400 to scan the pixel units 301 in the display panel 300 and control the on / off state of the pixel units 301; and, the timing controller 500 can provide a data signal to the source driver circuit 200 to enable the source driver circuit 200 to control the brightness, color, etc. of the pixel units 301 in the display panel 300.

[0029] In the embodiments of the present application, the display panel 300 can be divided into a plurality of display areas, and the plurality of display areas include two or more display areas. As Figure 1 shown, the plurality of display areas of the display panel 300 include a first display area 310 and a second display area 320. The first display area 310 is the display area close to the source driver circuit 200, and the second display area 320 is the display area far from the source driver circuit 200. The display panel 300 may only include the first display area 310 and the second display area 320, that is, the display panel 300 can be divided into two adjacent display areas, namely the first display area 310 and the second display area 320; or, the display panel 300 may also include other display areas located between the first display area 310 and the second display area 320, that is, the display panel 300 can be divided into more than two display areas. The embodiments of the present application do not limit the division method, shape, size, etc. of the display areas, and can be flexibly set according to requirements in practical applications. For example, the display panel 300 can be divided into a plurality of display areas according to the distance between different positions in the display panel 300 and the source driver circuit 200; the display areas can be rectangular, polygonal, elliptical, etc.; the sizes of different display areas can be the same or different; the areas of different display areas can be the same or different.

[0030] Among them, the source driver circuit 200 is used to detect whether there is a voltage drop in the first power supply voltage from the power management chip 100; when the first power supply voltage has a voltage drop, the source driver circuit 200 adjusts the driving ability of at least one display area in the display panel 300, so that the driving ability of the first display area 310 in the display panel 300 is less than that of the second display area 320. The display panel 300 is connected to the source driver circuit 200 through the data line DL. Therefore, the source driver circuit 200 adjusts the driving ability of at least one display area in the display panel 300, which may refer to adjusting the driving ability of the data line DL in at least one display area. The same data line DL may be divided into different display areas. By adjusting the driving ability of the data line DL in at least one display area in the embodiments of the present application, the same data line DL may have different driving abilities in different display areas. For example, it is possible to make the driving ability of the data line portion of the same data line DL close to the source driver circuit 200 less than that of the data line portion far from the source driver circuit 200.

[0031] Since the display data is output from the source driver circuit 200, according to the signal attenuation principle, the signal attenuation in the first display area 310 close to the source driver circuit 200 is small, while the signal attenuation in the second display area 320 far from the source driver circuit 200 is large. By adjusting the driving ability of at least one display area in the embodiments of the present application, the driving ability of the first display area 310 can be made less than that of the second display area 320, so that the signal output on the same path is more stable, reducing or avoiding the sudden change phenomenon of the data output signal.

[0032] In some embodiments, the source driver circuit 200 is further configured to: reduce the driving ability of the first display area 310; and / or increase the driving ability of the second display area 320.

[0033] In some embodiments, the source driver circuit 200 is further configured to: adjust the driving ability of the display area according to the distance between the display area and the source driver circuit 200. Among them, the driving ability of the display area is positively correlated with the distance between the display area and the source driver circuit 200.

[0034] In some embodiments, the source driver circuit 200 is further configured to: adjust the driving ability of the display area according to the voltage drop degree of the first power supply voltage. Among them, the adjustment amplitude of the driving ability of the display area is positively correlated with the voltage drop degree of the first power supply voltage.

[0035] In some embodiments, the source driver circuit 200 is further configured to: determine an initial adjustment value of the display area according to the distance between the display area and the source driver circuit 200; determine a target adjustment value of the display area according to the voltage drop degree of the first power supply voltage and the initial adjustment value of the display area; and adjust the driving capability of the display area according to the target adjustment value of the display area.

[0036] In some embodiments, the source driver circuit 200 is further configured to: determine a correction factor according to the voltage drop degree of the first power supply voltage; and determine a target adjustment value of the display area according to the correction factor and the initial adjustment value of the display area.

[0037] In some embodiments, the source driver circuit 200 is further configured to: determine whether the first power supply voltage has a voltage drop according to the first power supply voltage and a preset voltage threshold. Wherein, when the first power supply voltage exceeds the preset voltage threshold, the source driver circuit 200 determines that the first power supply voltage has a voltage drop.

[0038] In some embodiments, the first power supply voltage includes at least one of the following: an analog power supply positive voltage, an analog power supply negative voltage.

[0039] In some embodiments, the preset voltage threshold includes a first voltage threshold and a second voltage threshold; the source driver circuit 200 is further configured to: determine whether the first power supply voltage has a voltage drop according to the analog power supply positive voltage and the first voltage threshold, and the analog power supply negative voltage and the second voltage threshold. Wherein, when the analog power supply positive voltage is less than the first voltage threshold, or the analog power supply negative voltage is greater than the second voltage threshold, the source driver circuit 200 determines that the first power supply voltage has a voltage drop.

[0040] For other introductions and descriptions about the voltage drop detection method of the first power supply voltage, the driving capability adjustment method of the display area, the execution steps of the source driver circuit 200 and its beneficial effects, etc., please refer to the following method embodiments, and details are not described here.

[0041] Please refer to Figure 2 , Figure 2 is a flowchart of a driving method for a display device provided by an embodiment of the present application. The display device may include a power management chip, a source driver circuit connected to the power management chip, and a display panel connected to the source driver circuit. The display panel includes a plurality of display areas. The driving method of the display device may be applied to the source driver circuit. For example, the display device may be as Figure 1 shown, and the driving method of the display device may be performed by Figure 1 the source driver circuit 200 in Figure 2 shown. As

[0042] Step 110: The source driver circuit detects whether a voltage drop occurs in the first power supply voltage from the power management chip;

[0043] Step 120: When a voltage drop occurs in the first power supply voltage, the source driver circuit adjusts the driving capabilities of at least one display area in the display panel.

[0044] The power management chip is connected to the source driver circuit, and the first power supply voltage output by the power management chip is used to supply power to the source driver circuit. In some embodiments, the first power supply voltage includes at least one of the following: analog power supply positive voltage (Analog Voltage Drain, abbreviated as AVDD), analog power supply negative voltage (Analog Voltage Emitter, abbreviated as AVEE).

[0045] In step 110, the source driver circuit detects whether a voltage drop occurs in the first power supply voltage. The specific detection method for whether a voltage drop occurs in the first power supply voltage in the embodiments of the present application is not limited. For example, the first power supply voltage can be compared with a preset voltage threshold to determine whether a voltage drop occurs in the first power supply voltage; or, the change amount of the first power supply voltage can be compared with a preset voltage difference threshold to determine whether a voltage drop occurs in the first power supply voltage.

[0046] In some embodiments, the above step 110 includes: the source driver circuit determines whether a voltage drop occurs in the first power supply voltage according to the first power supply voltage and the preset voltage threshold. Among them, when the first power supply voltage exceeds the preset voltage threshold, the source driver circuit determines that a voltage drop occurs in the first power supply voltage; when the first power supply voltage does not exceed the preset voltage threshold, the source driver circuit determines that no voltage drop occurs in the first power supply voltage. It should be understood that exceeding includes being greater than or less than, and depending on the value ranges of the first power supply voltage and the preset voltage threshold, exceeding has different meanings. For example, if the first power supply voltage is the analog power supply positive voltage, the preset voltage threshold can be a positive value, and exceeding can mean that the analog power supply positive voltage is less than the preset voltage threshold; if the first power supply voltage is the analog power supply negative voltage, the preset voltage threshold can be a negative value, and exceeding can mean that the analog power supply negative voltage is greater than the preset voltage threshold.

[0047] Taking the first power supply voltage including the positive analog power supply voltage and the negative analog power supply voltage as an example, the preset voltage thresholds include a first voltage threshold and a second voltage threshold. The above step 110 includes: The source driver circuit determines whether there is a voltage drop in the first power supply voltage according to the positive analog power supply voltage and the first voltage threshold, and the negative analog power supply voltage and the second voltage threshold. Among them, the first voltage threshold can be a positive value, and the second voltage threshold can be a negative value. When the positive analog power supply voltage is less than the first voltage threshold, or the negative analog power supply voltage is greater than the second voltage threshold, the source driver circuit determines that there is a voltage drop in the first power supply voltage. That is, if any one of the positive analog power supply voltage and the negative analog power supply voltage exceeds the corresponding voltage threshold, it is considered that there is a voltage drop in the first power supply voltage. The embodiments of the present application do not limit the specific values of the first voltage threshold and the second voltage threshold, and can be flexibly set according to requirements in practical applications. For example, the first voltage threshold can be set to 5.5V or 5V, etc., and the second voltage threshold can be set to -5.5V or -5V, etc.

[0048] In step 120, the source driver circuit adjusts the driving ability of at least one display area in the display panel in response to a voltage drop in the first power supply voltage. In the embodiments of the present application, the display panel includes a first display area close to the source driver circuit and a second display area far from the source driver circuit. In the case of a voltage drop in the first power supply voltage, the source driver circuit adjusts the driving ability of at least one display area so that the driving ability of the first display area in the display panel is less than that of the second display area.

[0049] In some embodiments, the above step 120 may include: The source driver circuit reduces the driving ability of the first display area; and / or, the source driver circuit increases the driving ability of the second display area. In practical applications, the driving ability of only the first display area can be reduced, or the driving ability of only the second display area can be increased, or the driving ability of the first display area can be reduced and the driving ability of the second display area can be increased. According to the signal attenuation principle, the first display area is close to the source driver circuit, so the data output attenuation of the first display area is small; the second display area is far from the source driver circuit, so the data output attenuation of the second display area is large. In order to make the data output of the same source driver circuit more stable, the driving ability of the first display area can be reduced, and / or, the driving ability of the second display area can be increased. By adjusting the driving ability of the first display area and the second display area, the driving ability of the first display area can be made less than that of the second display area, so as to compensate for the data output attenuation of the second display area and ensure that the data output of the same source driver circuit is more stable.

[0050] In some embodiments, the above step 120 includes: the source driver circuit adjusts the driving ability of the display area according to the distance between the display area and the source driver circuit. According to the signal attenuation principle, as the transmission distance increases on the data transmission line, the signal attenuation also increases. Therefore, when adjusting the driving ability of at least one display area, a positive correlation can be achieved between the driving ability of the display area and the distance between the display area and the source driver circuit. That is, the smaller the distance between the display area and the source driver circuit, the smaller the driving ability of the display area; the larger the distance between the display area and the source driver circuit, the larger the driving ability of the display area.

[0051] Exemplarily, the display panel includes a first display area close to the source driver circuit and a second display area far from the source driver circuit. After adjusting the driving ability of at least one display area, the driving ability of the first display area can be less than that of the second display area. In addition, if the display panel further includes other display areas between the first display area and the second display area, the driving ability of the other display areas can be between the driving ability of the first display area and the driving ability of the second display area.

[0052] In some embodiments, the above step 120 includes: the source driver circuit adjusts the driving ability of the display area according to the voltage drop degree of the first power supply voltage. The voltage drop degree of the first power supply voltage refers to the degree of sudden change of the first power supply voltage. For example, the amplitude of the decrease of the first power supply voltage. Among them, the adjustment amplitude of the driving ability of the display area and the voltage drop degree of the first power supply voltage are positively correlated. That is, the smaller the voltage drop degree of the first power supply voltage, the smaller the adjustment amplitude of the driving ability of the display area by the source driver circuit; the larger the voltage drop degree of the first power supply voltage, the larger the adjustment amplitude of the driving ability of the display area by the source driver circuit. In the case where the first power supply voltage includes multiple voltages, the voltage drop degree of the first power supply voltage can be the average value or the weighted average value of the voltage drop degrees of the multiple voltages. For example, in the case where the first power supply voltage includes an analog power supply positive voltage and an analog power supply negative voltage, the voltage drop degree of the first power supply voltage can be the average value of the voltage drop degree of the analog power supply positive voltage and the voltage drop degree of the analog power supply negative voltage.

[0053] The source driver circuit can also adjust the driving ability of at least one display area by combining multiple factors, such as the distance between the display area and the source driver circuit and the degree of voltage drop of the first power supply voltage. Thus, in some embodiments, step 120 above includes: the source driver circuit determines an initial adjustment value of the display area according to the distance between the display area and the source driver circuit; the source driver circuit determines a target adjustment value of the display area according to the degree of voltage drop of the first power supply voltage and the initial adjustment value of the display area; the source driver circuit adjusts the driving ability of the display area according to the target adjustment value of the display area. Among them, the source driver circuit determines the target adjustment value of the display area according to the degree of voltage drop of the first power supply voltage and the initial adjustment value of the display area, including: the source driver circuit determines a correction factor according to the degree of voltage drop of the first power supply voltage; the source driver circuit determines the target adjustment value of the display area according to the correction factor and the initial adjustment value of the display area. For example, the source driver circuit can increase or decrease the correction factor on the basis of the initial adjustment value to obtain the target adjustment value; or, the source driver circuit can use the product of the initial adjustment value and the correction factor as the target adjustment value.

[0054] Embodiments of the present application can preset a first mapping relationship and a second mapping relationship. The first mapping relationship includes the mapping relationship between the initial adjustment value and the distance between the display area and the source driver circuit; the second mapping relationship includes the mapping relationship between the correction factor and the degree of voltage drop of the first power supply voltage. Among them, the distance between the display area and the source driver circuit in the first mapping relationship can be a distance value or a distance range. For each display area, after determining the distance between the display area and the source driver circuit, the corresponding initial adjustment value can be obtained from the first mapping relationship according to the distance. After determining the degree of voltage drop of the first power supply voltage, the corresponding correction factor can be obtained from the second mapping relationship according to the degree of voltage drop. Then, according to the correction factor and the initial adjustment value of each display area, the target adjustment value of each display area is determined. Exemplarily, the first mapping relationship can be as Figure 3 shown, and the second mapping relationship can be as Figure 4 shown.

[0055] It should be understood that the embodiments of the present application do not limit the specific adjustment method of the driving ability, and can be flexibly selected according to the requirements in practical applications. In some embodiments, the driving ability can be adjusted by adjusting the driving current, or the driving ability can be adjusted by adjusting the circuit layout of the display area. For example, the driving ability can be adjusted by adjusting components such as buffers, amplifiers, resistors, capacitors or inductors in the source driver circuit or the display panel.

[0056] In summary, for the technical solution provided by the embodiments of the present application, when the source driving circuit detects a voltage drop in the first power supply voltage from the power management chip, it adjusts the driving capabilities of at least one display area in the display panel, so that the driving capability of the first display area closer to the source driving circuit in the display panel is less than that of the second display area farther from the source driving circuit. By adjusting the driving capabilities of at least one display area in the display panel when the first power supply voltage drops, the embodiments of the present application can make the data output of the source driving circuit to different display areas in the display panel more stable, reduce or avoid the sudden change phenomenon of the data output signal of the source driving circuit, thereby reducing or avoiding horizontal crosstalk and improving the display effect. Moreover, the embodiments of the present application can save the debugging time and layout space of the display device, without increasing the cost of the display device, and have good applicability.

[0057] As Figure 5 shown in (a) of [reference], horizontal crosstalk is likely to occur at the position where black and white blocks switch under a gray background. Based on the technical solution provided by the embodiments of the present application, when the source driving circuit recognizes a voltage drop in the first power supply voltage, it adjusts the driving capabilities of at least one display area, reduces the driving capability of the first display area closer to the source driving circuit, and simultaneously increases the driving capability of the second display area farther from the source driving circuit, thereby avoiding horizontal crosstalk, as Figure 5 shown in (b) of [reference].

[0058] As Figure 6 shown in (a) of [reference], when dragging a table under a gray background, horizontal crosstalk is likely to occur at the edge of the table. Based on the technical solution provided by the embodiments of the present application, when the source driving circuit recognizes a voltage drop in the first power supply voltage, it adjusts the driving capabilities of at least one display area, reduces the driving capability of the first display area closer to the source driving circuit, and simultaneously increases the driving capability of the second display area farther from the source driving circuit, thereby avoiding horizontal crosstalk, as Figure 6 shown in (b) of [reference].

[0059] The above has introduced in detail a display device and a driving method for the display device provided by the embodiments of the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A method for driving a display device, the display device comprising a power management chip, a source driving circuit connected to the power management chip, and a display panel connected to the source driving circuit, the display panel comprising a plurality of display areas; characterized in that: The method comprises: The source driving circuit detects whether a voltage drop occurs in the first power supply voltage from the power management chip; When the first power supply voltage drops, the source driving circuit adjusts the driving capability of at least one of the display areas in the display panel so that the driving capability of the first display area in the display panel is less than the driving capability of the second display area; wherein the first display area is a display area close to the source driving circuit, and the second display area is a display area far from the source driving circuit.

2. The method for driving a display device according to claim 1, wherein: The source driving circuit adjusts the driving capability of at least one display area in the display panel, including: The source driving circuit reduces the driving capability of the first display area; and / or, The source driving circuit increases the driving capability of the second display area.

3. The method for driving a display device according to claim 1, wherein: The source driving circuit adjusts the driving capability of at least one display area in the display panel, including: The source driving circuit adjusts the driving capability of the display area according to the distance between the display area and the source driving circuit; There is a positive correlation between the driving capability of the display area and the distance between the display area and the source driving circuit.

4. The method for driving a display device according to claim 1, wherein: The source driving circuit adjusts the driving capability of at least one display area in the display panel, including: The source driving circuit adjusts the driving capability of the display area according to the voltage drop degree of the first power supply voltage; There is a positive correlation between the adjustment range of the driving capability of the display area and the voltage drop degree of the first power supply voltage.

5. The method for driving a display device according to claim 1, wherein: The source driving circuit adjusts the driving capability of at least one display area in the display panel, including: The source driving circuit determines an initial adjustment value of the display area according to a distance between the display area and the source driving circuit; The source driving circuit determines a target adjustment value of the display area according to a voltage drop degree of the first power supply voltage and an initial adjustment value of the display area; The source driving circuit adjusts the driving capability of the display area according to the target adjustment value of the display area.

6. The method for driving a display device according to claim 5, characterized in that: The source driving circuit determines a target adjustment value of the display area according to a voltage drop degree of the first power supply voltage and an initial adjustment value of the display area, including: The source driving circuit determines a correction factor according to a voltage drop degree of the first power supply voltage; The source driving circuit determines a target adjustment value of the display area according to the correction factor and the initial adjustment value of the display area.

7. The method for driving a display device according to claim 1, wherein: The source driving circuit detects whether a voltage drop occurs in the first power supply voltage from the power management chip, including: The source driving circuit determines whether a voltage drop occurs in the first power supply voltage according to the first power supply voltage and a preset voltage threshold; When the first power supply voltage exceeds the preset voltage threshold, the source driving circuit determines that a voltage drop occurs in the first power supply voltage.

8. The method for driving a display device according to claim 7, wherein: The first power supply voltage includes at least one of the following: an analog power supply positive voltage and an analog power supply negative voltage.

9. The method for driving a display device according to claim 8, characterized in that: The preset voltage threshold includes a first voltage threshold and a second voltage threshold; The source driving circuit determines whether a voltage drop occurs in the first power supply voltage according to the first power supply voltage and a preset voltage threshold, including: The source driving circuit determines whether a voltage drop occurs in the first power supply voltage according to the analog power supply positive voltage and the first voltage threshold, and the analog power supply negative voltage and the second voltage threshold; When the analog power supply positive voltage is less than the first voltage threshold, or the analog power supply negative voltage is greater than the second voltage threshold, the source driving circuit determines that a voltage drop occurs in the first power supply voltage.

10. A display device, comprising a power management chip, a source driving circuit connected to the power management chip, and a display panel connected to the source driving circuit, wherein the display panel comprises a plurality of display areas; characterized in that: The source driving circuit is used to execute the driving method of the display device according to any one of claims 1 to 9.

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