Control method and electronic device

Abstract

A control method and an electronic device. The control method comprises: determining a usage mode of an electronic device, at least one parameter of a target display area of a display screen (10) of the electronic device being different in different usage modes (S1); and controlling a cathode voltage of the display screen (10) to be adjusted to a target voltage value corresponding to the usage mode (S2).

Description

A control method and electronic device

[0001] This application claims priority to Chinese Patent Application No. 202411976558.3, filed with the Chinese Patent Office on December 30, 2024, entitled "A Control Method and Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of display technology, and more particularly to a control method and electronic device. Background Technology

[0003] OLED (Organic Light Emitting Diode) displays, with their superior characteristics such as high contrast, fast response time, wide viewing angle, low power consumption, and flexibility, have been widely used in smartphones, televisions, laptops, and wearable devices. However, existing electronic devices with OLED displays consume relatively high power. Summary of the Invention

[0004] A control method, comprising:

[0005] Determine the usage mode of the electronic device, wherein at least one parameter of the target display area of ​​the display screen of the electronic device is different in different usage modes;

[0006] The cathode voltage of the display screen is adjusted to a target voltage value corresponding to the usage mode.

[0007] Optionally, adjusting the cathode voltage of the display screen to a target voltage value corresponding to the usage mode includes at least one of the following:

[0008] In response to the electronic device switching from the current first usage mode to the target usage mode, the cathode voltage of the display screen is controlled to be adjusted from the current first voltage value to the target voltage value corresponding to the target usage mode, wherein the first voltage value is greater than or less than the target voltage value, and the display parameters of the target display area in the first usage mode are different from the display parameters in the target usage mode;

[0009] The power supply module of the control electronic device outputs the number of pulses to the display screen based on the usage mode, so as to adjust the cathode voltage of the display screen to the target voltage value.

[0010] Optionally, adjusting the cathode voltage of the display screen from the current first voltage value to a target voltage value corresponding to the target usage mode includes at least one of the following:

[0011] In response to the electronic device switching from a current first usage mode to a second usage mode, the cathode voltage of the display screen is controlled to be increased from the first voltage value to the second voltage value, wherein the display area and / or display brightness of the available display area of ​​the display screen in the first usage mode is less than the display area and / or display brightness of the available display area in the second usage mode;

[0012] In response to the electronic device switching from a current first usage mode to a third usage mode, the cathode voltage of the display screen is controlled to be reduced from the first voltage value to the third voltage value, wherein the display area and / or display brightness of the available display area of ​​the display screen in the first usage mode are greater than the display area and / or display brightness of the available display area in the third usage mode;

[0013] In response to the electronic device switching from the current first usage mode to the fourth usage mode, the cathode voltage of the display screen is controlled to be adjusted from the first voltage value to the fourth voltage value, wherein the display brightness or display area of ​​the target display area in the fourth usage mode is different from the display brightness or display area in the first usage mode, and the target display area is a non-usable display area in the display screen.

[0014] Optionally, adjusting the cathode voltage of the display screen to a target voltage value corresponding to the usage mode includes at least one of the following:

[0015] The information of the usage mode of the electronic device is given to the display controller of the display screen, and the display controller sends control commands to the power management chip of the electronic device to adjust the number of pulses output to the display screen, so that the cathode voltage of the display screen is adjusted to the target voltage value.

[0016] Obtain target reference information of the electronic device in the target usage mode, and control the cathode voltage of the display screen to be adjusted to the corresponding target voltage value based on the target reference information.

[0017] Optionally, adjusting the cathode voltage of the display screen to a corresponding target voltage value based on the target reference information includes at least one of the following:

[0018] Obtain the position distribution information of the target display area in the display screen, and control the cathode voltage of the display screen to be adjusted to the corresponding target voltage value based on the position distribution information. The target display area includes any one of the available display area, split screen area or non-available display area in the display screen.

[0019] The configuration information of the display screen is obtained, and the cathode voltage of the target cathode of the display screen is adjusted to the corresponding target voltage value based on the configuration information. The configuration information includes the configuration information of the cathode electrode of the display screen.

[0020] Obtain connection status information between the electronic device and the target display device, and control the cathode voltage of the display screen to be adjusted to the corresponding target voltage value based on the connection status information;

[0021] Obtain the operating application information of the electronic device, and control the cathode voltage of the display screen to adjust to the corresponding target voltage value based on the operating application information;

[0022] Obtain the power input information of the electronic device, and control the cathode voltage of the display screen to adjust to the corresponding target voltage value based on the power input information.

[0023] Optionally, adjusting the cathode voltage of the display screen to a target voltage value corresponding to the usage mode includes:

[0024] The target display area of ​​the display screen is determined based on the usage mode. The target display area is an available display area for outputting the target content to be displayed.

[0025] The cathode voltage provided by the target cathode electrode corresponding to the available display area is adjusted to a target voltage value corresponding to the usage mode;

[0026] In the display screen, different display areas correspond to different cathode electrodes.

[0027] Optionally, adjusting the cathode voltage provided by the cathode electrode corresponding to the available display area to a target voltage value corresponding to the usage mode includes at least one of the following:

[0028] When the electronic device is in the fifth usage mode, the cathode voltage provided by the first cathode electrode corresponding to the first display area of ​​the display screen is adjusted to the fifth voltage value corresponding to the fifth usage mode;

[0029] When the electronic device is in the sixth usage mode, the cathode voltage provided by the second cathode electrode corresponding to the second display area of ​​the display screen is adjusted to the sixth voltage value corresponding to the sixth usage mode;

[0030] When the electronic device is in the seventh usage mode, the cathode voltage provided by the first cathode electrode corresponding to the first display area of ​​the display screen is adjusted to the seventh voltage value corresponding to the seventh usage mode, and the cathode voltage provided by the second cathode electrode corresponding to the second display area of ​​the display screen is adjusted to the eighth voltage value corresponding to the seventh usage mode.

[0031] An electronic device, comprising:

[0032] Display screen;

[0033] A power supply module is used to supply power to the display screen;

[0034] A controller is used to determine the usage mode of the electronic device in order to control the cathode voltage of the display screen to adjust to a target voltage value corresponding to the usage mode;

[0035] In different usage modes, at least one parameter of the available display area of ​​the electronic device's display screen is different.

[0036] Optionally, the electronic device includes a first body and a second body rotatably connected, a portion of the display screen is displayed on a first side of the first body, and the remaining portion of the display screen is housed in the first body or the second body. In different usage modes of the electronic device, at least a portion of the display screen is pulled out from the first body or the second body or housed in the first body or the second body.

[0037] In response to the electronic device switching from the current first usage mode to the target usage mode, the controller controls the cathode voltage of the display screen to be adjusted from the current first voltage value to a target voltage value corresponding to the target usage mode, wherein the first voltage value is greater than or less than the target voltage value;

[0038] The available display area of ​​the display screen in the first usage mode is different from the available display area in the target usage mode.

[0039] Optionally, the electronic device includes a first body and a second body rotatably connected, and the display screen includes a first region disposed on a second side of the first body and a second region disposed on a third side of the second body;

[0040] The display screen further includes a first cathode electrode that provides a cathode voltage to the first region and a second cathode electrode that provides a cathode voltage to the second region;

[0041] In response to the electronic device entering the target usage mode, the controller adjusts the cathode voltage provided by the first cathode electrode or the second cathode electrode to the corresponding target voltage value. Attached Figure Description

[0042] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0043] Figure 1 is a schematic diagram of the transmission method of the cathode voltage signal in the display screen;

[0044] Figure 2 is a flowchart of a control method provided in this application;

[0045] Figure 3 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0046] Figures 4 and 5 are schematic diagrams of the available display areas of the display screen in two different usage modes in an electronic device provided in an embodiment of this application;

[0047] Figure 6 is a schematic diagram of different display areas corresponding to different cathode electrodes in an electronic device provided in an embodiment of this application. Detailed Implementation

[0048] The embodiments of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0049] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this application can be combined with each other without contradiction.

[0050] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] As described in the background section, existing electronic devices with OLED display screens consume a relatively large amount of power.

[0052] Specifically, the power consumption of an OLED display screen includes logic power consumption and light emission power consumption. Logic power consumption refers to the power consumption of the driving circuit that provides driving signals to the light-emitting elements in the OLED display screen; light emission power consumption refers to the power consumption generated by the light-emitting elements emitting light in the OLED display screen. During the operation of the electronic device, the light emission power consumption is determined by the current flowing through the light-emitting element and the voltage across the light-emitting element. Specifically, the light emission power consumption P(EL) = I(OLED) * V(ELVDD - ELVSS), where I(OLED) represents the current flowing through the light-emitting element, V(ELVDD - ELVSS) represents the voltage across the light-emitting element, V(ELVDD) represents the anode voltage of the light-emitting element, and V(ELVEE) represents the cathode voltage of the light-emitting element. For example, if an electronic device is at maximum brightness, and the current I(OLED) flowing through the light-emitting element in its OLED display screen is 1000mA, ELVDD is 5V, and ELVSS is -3V, then the light emission power consumption of the light-emitting element at this time is 1 * [5 - (-3)] = 8W. It should be noted that the current and voltage values ​​in this application are for illustrative purposes only and are not the actual current and voltage values ​​when the OLED display is working.

[0053] The inventors discovered that in practical applications, a single light-emitting element may only require a cathode voltage of -1V. However, since the light-emitting elements in an OLED display are current-driven, and each element receives its cathode voltage through the same cathode signal output terminal, a voltage drop occurs along the transmission direction from the first light-emitting element to the last, as shown in Figure 1. Specifically, a voltage drop occurs from the cathode signal input point (i.e., the cathode signal output terminal of circuit board 20) A in display screen 01 to the location B of the light-emitting element furthest from the cathode input point in display screen 01. This voltage drop can be as high as 2V. Therefore, to ensure that the brightness of the last light-emitting element meets the emission requirements, the cathode voltage output at the cathode signal output terminal is set to a higher value, such as -3V. This results in higher power consumption for electronic devices with OLED displays, and consequently, higher overall power consumption.

[0054] In view of this, this application provides a control method applied to an electronic device, wherein the electronic device optionally includes an OLED display screen or an LED display screen. In this embodiment, as shown in FIG2, the control method includes:

[0055] S1: Determine the usage mode of the electronic device, wherein, under different usage modes, at least one parameter of the target display area of ​​the display screen of the electronic device is different.

[0056] It should be noted that, in the embodiments of this application, the target display area of ​​the display screen of the electronic device can be an available display area, that is, an area used to output display content in different usage modes, or it can be an unavailable display area, such as an obscured display area or a concealed display area, etc. This application does not limit this, and it depends on the specific situation.

[0057] Optionally, in this embodiment, under different usage modes, at least one parameter of the target display area of ​​the electronic device's display screen may differ, including at least one of the following:

[0058] The target display area of ​​the electronic device's screen varies depending on the usage mode. For example, the usage mode of the electronic device may include large screen display, small screen display, and / or split screen display.

[0059] The brightness of the target display area of ​​the electronic device's screen varies under different usage modes. For example, the electronic device's usage modes include a low-brightness display mode and a high-brightness display mode. For instance, when used for content display, a high-brightness display mode is required, while when used for personal viewing, a low-brightness display mode is required.

[0060] The resolution of the target display area of ​​the electronic device's screen varies depending on the usage mode. For example, the electronic device's usage modes include low-resolution mode and high-resolution mode. For instance, high-resolution mode is required when playing videos, while low-resolution mode is required when using office software.

[0061] The refresh rate of the target display area of ​​the electronic device's screen varies depending on the usage mode. For example, the electronic device may have a high refresh rate mode and a low refresh rate mode. For instance, a game interface requires a high refresh rate mode, while browsing web pages requires a low refresh rate mode.

[0062] In other embodiments of this application, at least one parameter of the target display area of ​​the electronic device's display screen may be different under different usage modes, or other parameters may be different. This application does not limit this, and it depends on the specific circumstances.

[0063] Based on any of the above embodiments, in one embodiment of this application, determining the usage mode of the electronic device includes at least one of the following:

[0064] Based on the configuration information of the electronic device triggered by the user, the usage mode of the electronic device is determined;

[0065] The usage mode of the electronic device is determined based on the currently running application in the electronic device;

[0066] The usage mode of the electronic device is determined based on the angles formed between the different components of the electronic device;

[0067] The usage mode of the electronic device is determined based on the area of ​​the exposed area of ​​the display screen in the electronic device;

[0068] Based on the environmental information of the electronic device, the usage mode of the electronic device is determined.

[0069] In other embodiments of this application, the control method may also determine the usage mode of the electronic device based on other methods. This application does not limit this method and the specific method depends on the circumstances.

[0070] The following describes how the usage mode of the electronic device is determined by taking the example of different target display areas under different usage modes.

[0071] Specifically, in one embodiment of this application, the electronic device is an electronic device with the form of a laptop computer. For example, if the electronic device is a laptop computer, the electronic device includes a first body and a second body that can rotate relative to each other. The usage mode of the electronic device can be determined based on the angle between the different components of the electronic device.

[0072] It should be noted that, in this embodiment, the display area of ​​the electronic device may be located only on the first body, or it may be partially located on the first body and partially located on the second body. This application does not limit this, and it depends on the specific situation.

[0073] Taking the target display area as an example, in one embodiment of this application, the target display area is located on the first body. If the angle between the opposing surfaces of the first body and the second body is large, it indicates that the target display area is far from the user relative to the connection point between the second body and the first body. In this case, the user may be using a larger display area. If the angle between the opposing surfaces of the first body and the second body is small, it indicates that the target display area is close to the user relative to the connection point between the second body and the first body. In this case, the user may be using a smaller display area. In another embodiment of this application, the display screen of the electronic device is a bendable display screen. If the electronic device is in a flattened state, it indicates that the area of ​​the target display area is large; if the electronic device is in a folded state, it indicates that the area of ​​the target display area is small.

[0074] In another embodiment of this application, the electronic device has a planar computer form and a housing. The area of ​​the display screen used for displaying content (i.e., the usable display area) is exposed outside the housing, and the display area of ​​the display screen not used for displaying content (i.e., the unusable display area) is housed inside the housing. In this embodiment, the control method can determine the usage mode of the electronic device based on the area of ​​the display area of ​​the display screen exposed outside the housing. For example, when the area of ​​the display area of ​​the display screen exposed outside the housing is large, it indicates that the user is using a large display area to display content; when the area of ​​the display area of ​​the display screen exposed outside the housing is small, it indicates that the user is using a small display area to display content.

[0075] It should be noted that different applications in an electronic device require different display areas. In one embodiment of this application, the electronic device includes at least two applications, namely a first application and a second application. The first application requires a larger display area, such as a video playback application. The second application requires a smaller display area, such as a chat application. Therefore, this control method can determine the usage mode of the electronic device based on the currently running applications.

[0076] It should also be noted that in some applications, the environment in which the electronic device is located can also characterize the user's demand for the display area. For example, when the electronic device is in a conference room, the user may be displaying content and has a larger demand for the display area. When the electronic device is in a bedroom, the user may be entertaining or browsing some web page information and has a smaller demand for the display area. Therefore, in this embodiment, the control method can also determine the usage mode of the electronic device based on the environmental information of the electronic device.

[0077] In another embodiment of this application, determining the usage mode of the electronic device based on the environmental information of the electronic device may further include determining the usage mode of the electronic device based on whether there is an obstruction above the target display area of ​​the electronic device, such as whether there is an external keyboard obstructing it. In this embodiment, the usage mode of the electronic device is different when there is an obstruction above the target display area and when there is no obstruction above the target display area. Specifically, when there is an obstruction above the target display area, the display area of ​​the display screen used to display content is smaller, and when there is no obstruction above the target display area, the display area of ​​the display screen used to display content is larger.

[0078] It should be noted that in the above embodiments, when there is an obstruction above the target display area, the display brightness of the target display area can be adjusted to a low brightness display mode, or it can be turned off directly. This application does not limit this, and it depends on the specific situation.

[0079] S2: Control the cathode voltage of the display screen to adjust to the target voltage value corresponding to the usage mode. It should be noted that, in this embodiment, the adjustment of the cathode voltage includes at least one of the following: adjusting the cathode voltage from a smaller voltage value to a larger voltage value, adjusting the cathode voltage from a larger voltage value to a smaller voltage value, adjusting the cathode voltage from zero to a non-zero value, adjusting the cathode voltage from a non-zero value to zero, etc. It should also be noted that, in this embodiment, the magnitude of the cathode voltage refers to the absolute value of the cathode voltage. For example, adjusting the cathode voltage from a smaller voltage value to a larger voltage value means adjusting the absolute value of the cathode voltage from a smaller voltage value to a larger voltage value.

[0080] The control method provided in this application embodiment can control the cathode voltage of the display screen to be adjusted to a target voltage value corresponding to the usage mode of the electronic device, thereby adjusting the cathode voltage according to the cathode voltage requirement of the display screen under the target usage mode, rather than controlling the cathode voltage to always maintain a large voltage value, thereby reducing the light emission power consumption of the display screen and thus reducing the power consumption of the electronic device.

[0081] Optionally, in one embodiment of this application, controlling the cathode voltage of the display screen to adjust to a target voltage value corresponding to the usage mode includes: in response to the electronic device switching from the current first usage mode to the target usage mode, controlling the cathode voltage of the display screen to adjust from the current first voltage value to the target voltage value corresponding to the target usage mode, wherein the first voltage value may be greater than or less than the target voltage value. It should be noted that in this embodiment, the display parameters of the target display area in the first usage mode are different from the display parameters in the target usage mode.

[0082] Specifically, in one embodiment of this application, the display parameter can be the display area, the display resolution, the display position, the display brightness, or the display refresh rate, etc. This application does not limit this, as long as the display parameter includes at least one of the following: display area, display resolution, display position, display brightness, and display refresh rate. It should be noted that if the display parameter is the display area, in one embodiment of this application, the electronic device can have two display states. In one display state, the display area used for displaying content is the maximum display area of ​​the display screen; in the other display state, the display area used for displaying content is zero or the minimum display area that can be used for displaying content. In another embodiment of this application, the electronic device can have multiple display states, and the display area of ​​the display screen is different in different display states. For example, during the use of the electronic device, the display screen can be arbitrarily raised, lowered, or hovered.

[0083] Optionally, in one embodiment of this application, taking the target display area as an example, the display area of ​​the target display area in the first usage mode is larger than the display area in the target usage mode, and the first voltage value is greater than the target voltage value; conversely, the display area of ​​the target display area in the first usage mode is smaller than the display area in the target usage mode, and the first voltage value is less than the target voltage value; the display brightness of the target display area in the first usage mode is greater than the display brightness in the target usage mode, and the first voltage value is greater than the target voltage value; conversely, the display brightness of the target display area in the first usage mode is less than the display brightness in the target usage mode, and the first voltage value is greater than the target voltage value. The first voltage value is greater than the target voltage value if the display resolution of the target display area in the first usage mode is greater than the display resolution in the target usage mode, and vice versa. The first voltage value is also greater than the target voltage value if the display resolution of the target display area in the first usage mode is less than the display resolution in the target usage mode, and vice versa. Furthermore, the first voltage value is greater than the target voltage value if the display refresh rate of the target display area in the first usage mode is greater than the display refresh rate in the target usage mode, and vice versa.

[0084] Based on any of the above embodiments, in one embodiment of this application, controlling the cathode voltage of the display screen to adjust to a target voltage value corresponding to the usage mode includes: controlling the power supply module of the electronic device to output a number of pulses to the display screen based on the usage mode, so as to adjust the cathode voltage of the display screen to the target voltage value. It should be noted that in this embodiment, when the number of pulses output by the power supply module of the electronic device to the display screen is different, the cathode voltage of the display screen is different (i.e., the target voltage value is different). Specifically, the more pulses the power supply module of the electronic device outputs to the display screen, the higher the cathode voltage of the display screen; the fewer pulses the power supply module of the electronic device outputs to the display screen, the lower the cathode voltage of the display screen.

[0085] Optionally, based on the above embodiments, in one embodiment of this application, the power supply module of the electronic device can be the power management chip of the electronic device, so as to control the cathode voltage value of the display plane by controlling the number of voltage pulses output by the power management chip to the display screen; in other embodiments of this application, the power supply module of the electronic device can also be a power delivery controller (PD controller) or a power supply when the display screen is independently powered. This application does not limit this, and it depends on the specific situation.

[0086] Based on any of the above embodiments, in one embodiment of this application, adjusting the cathode voltage of the display screen from the current first voltage value to a target voltage value corresponding to the target usage mode may further include at least one of the following:

[0087] In response to the electronic device switching from a current first usage mode to a second usage mode, the cathode voltage of the display screen is controlled to be increased from the first voltage value to the second voltage value, wherein the display area and / or display brightness of the available display area of ​​the display screen in the first usage mode is less than the display area and / or display brightness of the available display area in the second usage mode;

[0088] In response to the electronic device switching from a current first usage mode to a third usage mode, the cathode voltage of the display screen is controlled to be reduced from the first voltage value to the third voltage value, wherein the display area and / or display brightness of the available display area of ​​the display screen in the first usage mode are greater than the display area and / or display brightness of the available display area in the third usage mode;

[0089] In response to the electronic device switching from a current first usage mode to a fourth usage mode, the cathode voltage of the display screen is controlled to be adjusted from the first voltage value to the fourth voltage value, wherein the display brightness or display area of ​​the target display area in the fourth usage mode is different from the display brightness or display area in the first usage mode, wherein the target display area is a non-usable display area in the display screen.

[0090] The following describes several implementation methods for adjusting the cathode voltage of the display screen from the current first voltage value to the target voltage value corresponding to the target usage mode.

[0091] Optionally, in one embodiment of this application, controlling the cathode voltage of the display screen to adjust from the current first voltage value to a target voltage value corresponding to the target usage mode includes: in response to the electronic device switching from the current first usage mode to the second usage mode, controlling the cathode voltage of the display screen to increase from the first voltage value to the second voltage value; in this embodiment, the area of ​​the available display area of ​​the display screen in the first usage mode is smaller than the area of ​​the available display area in the second usage mode, such as switching from a small screen display to a large screen display; or, the display brightness of the available display area of ​​the display screen in the first usage mode is smaller than the display brightness of the available display area in the second usage mode, such as switching from a low brightness display mode to a high brightness display mode; or, the display area and display brightness of the available display area of ​​the display screen in the first usage mode are both smaller than the display area and / or display brightness of the available display area in the third usage mode.

[0092] It should be noted that, in the above embodiments, in the first usage mode, the area of ​​the available display area of ​​the display screen can be the minimum area that the display screen can be used for display, or any value between the maximum and minimum areas that the display screen can be used for display; similarly, in the second usage mode, the area of ​​the available display area of ​​the display screen can be the maximum area that the display screen can be used for display, or any value between the maximum and minimum areas that the display screen can be used for display; this application does not limit this, as long as the area of ​​the available display area of ​​the display screen in the first usage mode is smaller than the area of ​​the available display area in the second usage mode.

[0093] In another embodiment of this application, controlling the cathode voltage of the display screen to adjust from the current first voltage value to a target voltage value corresponding to the target usage mode includes: in response to the electronic device switching from the current first usage mode to a third usage mode, controlling the cathode electrode of the display screen to decrease from the first voltage value to the third voltage value; in this embodiment, the area of ​​the available display area of ​​the display screen in the first usage mode is larger than the area of ​​the available display area in the third usage mode, such as switching from a large screen display to a small screen display; or, the display brightness of the available display area of ​​the display screen in the first usage mode is greater than the display brightness of the available display area in the third usage mode, such as switching from a high brightness display mode to a low brightness display mode; or, the display area and display brightness of the available display area of ​​the display screen in the first usage mode are both greater than the display area and / or display brightness of the available display area in the third usage mode.

[0094] It should be noted that, in the above embodiments, in the first usage mode, the area of ​​the available display area of ​​the display screen can be the maximum area that the display screen can use for display, or any value between the maximum and minimum area that the display screen can use for display; similarly, in the third usage mode, the area of ​​the available display area of ​​the display screen can be the minimum area that the display screen can use for display, or any value between the maximum and minimum area that the display screen can use for display; this application does not limit this, as long as the area of ​​the available display area of ​​the display screen in the first usage mode is greater than the area of ​​the available display area in the third usage mode.

[0095] In another embodiment of this application, controlling the cathode voltage of the display screen to adjust from the current first voltage value to a target voltage value corresponding to the target usage mode includes: in response to the electronic device switching from the current first usage mode to a fourth usage mode, controlling the cathode voltage of the display screen to adjust from the first voltage value to the fourth voltage value. In this embodiment, the display brightness or display area of ​​the target display area in the fourth usage mode is different from the display brightness or display area in the first usage mode. The target display area is a non-usable display area in the display screen, that is, a display area that is not currently used to display content.

[0096] It should be noted that in the above embodiments, the unusable display area can be a display area in the display screen that is in a retracted state, or it can be a display area in the display screen that is obscured. This application does not limit this, and it depends on the specific situation.

[0097] Taking the target display area as the display area in the retracted state of the display screen as an example, specifically, based on the above embodiments, in one embodiment of this application, the first voltage value is greater than the fourth voltage value. In this embodiment, the display brightness of the target display area in the fourth usage mode is less than the display brightness in the first usage mode, that is, the brightness of the display area in the retracted state is reduced, and / or, the display area of ​​the target display area in the fourth usage mode is greater than the display area in the first usage mode, that is, the area of ​​the display area in the retracted state of the display screen is increased.

[0098] In other embodiments of this application, adjusting the cathode voltage of the display screen from the current first voltage value to the target voltage value corresponding to the target usage mode may include other content, which is not limited in this application and depends on the specific circumstances.

[0099] Based on any of the above embodiments, in one embodiment of this application, controlling the cathode voltage of the display screen to adjust to a target voltage value corresponding to the usage mode includes: providing information about the usage mode of the electronic device to the display controller of the display screen, and sending a control command to the power management chip of the electronic device through the display controller to adjust the number of pulses output to the display screen so that the cathode voltage of the display screen is adjusted to the target voltage value.

[0100] Optionally, in one embodiment of this application, the display controller includes a timing controller (TCON), which is responsible for managing the timing control of pixel data within the display screen to ensure that the displayed content can be correctly presented; the main function of the power management chip (PMIC) in the electronic device is to manage and control electrical energy, which can ensure that the display screen can obtain a stable and efficient power supply in different usage modes.

[0101] In another embodiment of this application, controlling the cathode voltage of the display screen to adjust to a target voltage value corresponding to the usage mode includes: obtaining target reference information of the electronic device in the target usage mode, and controlling the target voltage value corresponding to the target cathode voltage adjustment value of the display screen based on the target reference information.

[0102] In other embodiments of this application, controlling the cathode voltage of the display screen to adjust to a target voltage value corresponding to the usage mode may further include: providing information about the usage mode of the electronic device to the display controller of the display screen; sending a control command to the power management chip of the electronic device through the display controller to adjust the number of pulses output to the display screen, thereby adjusting the cathode voltage of the display screen to the target voltage value; and obtaining target reference information of the electronic device in the target usage mode, and controlling the cathode voltage of the display screen to adjust to the corresponding target voltage value based on the target reference information. This application does not limit this, and the specific implementation depends on the circumstances.

[0103] The following describes the process of controlling the cathode voltage of the display screen to adjust to a target voltage value corresponding to the usage mode, including: obtaining target reference information of the electronic device in the target usage mode, and controlling the target voltage value corresponding to the target cathode voltage adjustment value of the display screen based on the target reference information.

[0104] Optionally, in one embodiment of this application, the target reference information may be the positional distribution information of the target display area on the display screen under the target usage mode. In this embodiment, controlling the cathode voltage of the display screen to adjust to the corresponding target voltage value based on the target reference information includes: obtaining the positional distribution information of the target display area on the display screen, and controlling the target voltage value corresponding to the cathode voltage adjustment value of the display screen based on the positional distribution information. The target display area includes any one of the available display area, the split-screen display area, or the non-available display area on the display screen.

[0105] Taking the target display area as an example of the available display area in the display screen, in one embodiment of this application, both the target display area and the non-target display area of ​​the display screen are in a display state. The display brightness of the non-target display area is less than the display brightness of the target display area. In this embodiment, when the target display area is located on the side of the display screen closer to the cathode voltage input terminal of the display screen, the cathode voltage of the display screen is less than when the target display area is located on the side of the display screen farther away from the cathode voltage input terminal of the display screen. That is, in this embodiment, the farther the target display area is from the cathode voltage input terminal of the display screen, the greater the cathode voltage of the display screen; the closer the target display area is to the cathode voltage input terminal of the display screen, the smaller the cathode voltage of the display screen.

[0106] Taking the target display area as an example of a non-usable display area (such as a display area in a retracted state) in the display screen, in one embodiment of this application, both the target display area and the non-target display area of ​​the display screen are in a display state. The display brightness of the non-target display area is greater than that of the target display area. In this embodiment, when the target display area is located on the side of the non-target display area closer to the cathode voltage input terminal of the display screen, the cathode voltage of the display screen is greater than that when the target display area is located on the side of the non-target display area farther away from the cathode voltage input terminal of the display screen. That is, in this embodiment, the farther the non-target display area is from the cathode voltage input terminal of the display screen, the greater the cathode voltage of the display screen; the closer the non-target display area is to the cathode voltage input terminal of the display screen, the smaller the cathode voltage of the display screen.

[0107] In another embodiment of this application, the target reference information is the configuration information of the display screen. In this embodiment, controlling the cathode voltage of the display screen to adjust to the corresponding target voltage value based on the target reference information includes: obtaining the configuration information of the display screen, and controlling the cathode voltage of the target cathode of the display screen to adjust to the corresponding target voltage value based on the configuration information. The configuration information includes the configuration information of the cathode electrode of the display screen, and the configuration information of the cathode electrode includes the configuration number of the cathode electrode.

[0108] Optionally, based on the above embodiments, in one embodiment of this application, the display screen has at least two cathode configurations. In this embodiment, the target display area and non-target display area of ​​the display screen correspond to different cathode electrodes. If the target display area is a usable display area, controlling the cathode voltage of the display screen to adjust to the corresponding target voltage value based on the target reference information includes: based on the cathode configuration information in the display screen, controlling the cathode electrode corresponding to the target display area in the display screen to output the cathode voltage value required for the target display area, and controlling the cathode electrode corresponding to the non-target display area in the display screen to reduce the cathode voltage value, or even to zero. If the target display area is not a usable display area, controlling the cathode voltage of the display screen to adjust to the corresponding target voltage value based on the target reference information includes: based on the cathode configuration information in the display screen, controlling the cathode electrode corresponding to the target display area in the display screen to reduce the cathode voltage value, or even to zero, and controlling the cathode electrode corresponding to the non-target display area in the display screen to output the cathode voltage value required for the non-target display area.

[0109] In another embodiment of this application, the target reference information is the connection information between the electronic device and other devices. Optionally, in one embodiment of this application, the other device may be a display device. In this embodiment, controlling the cathode voltage of the display screen to adjust to the corresponding target voltage value based on the target reference information includes: obtaining connection status information between the electronic device and the target display device, and controlling the target voltage value corresponding to the cathode voltage adjustment value of the display screen based on the connection status information.

[0110] Specifically, in one embodiment of this application, the connection status information between the electronic device and the target display device may include whether the electronic device is connected to the target display device, whether the electronic device is connected to the target display device, and the display mode information between the electronic device and the target display device when the electronic device is connected to the target display device. It may also include other information between the electronic device and the target display device. This application does not limit this, and it depends on the specific circumstances.

[0111] Optionally, if the electronic device is connected to a target display device, indicating that at least a portion of the image of the electronic device is displayed through the target display device, in this embodiment, the cathode voltage of the display screen is controlled to be adjusted to a smaller target voltage value. Furthermore, display mode information between the electronic device and the target display device can be obtained. If the display mode between the electronic device and the target display device is "copy," meaning all the display images of the electronic device are displayed through the target display device, in this embodiment, the cathode voltage of the display screen is controlled to be adjusted to a smaller voltage value, or even the cathode voltage of the display screen can be stopped from outputting. If the display mode between the electronic device and the target display device is "extension," meaning some of the display images of the electronic device are displayed through the target display device, while others remain displayed on the display screen of the electronic device, in this embodiment, the cathode voltage of the display screen can be controlled to remain constant, or the cathode voltage of the display screen can be controlled to decrease to a smaller voltage value. This application does not limit this; it depends on the specific circumstances.

[0112] In another embodiment of this application, the target reference information is the running application information in the electronic device. In this embodiment, controlling the cathode voltage of the display screen to adjust to the corresponding target voltage value based on the target reference information includes: obtaining the running application information of the electronic device, and controlling the cathode voltage of the display screen to adjust to the target voltage value based on the running application information. For example, if the application information running in the electronic device is game application information or video application information, the display screen may need to output a display screen with a large area, high resolution, or high refresh rate, and control the cathode voltage of the display screen to output a larger voltage value; if the application information running in the electronic device is web browsing information, interactive application information, or music playback application information, the display screen may need to output a display screen with a small area, low resolution, or low refresh rate, and control the cathode voltage of the display screen to output a smaller voltage value.

[0113] In another embodiment of this application, the target reference information is power supply access information. In this embodiment, controlling the cathode voltage of the display screen to adjust to the corresponding target voltage value based on the target reference information includes: obtaining the power supply access information of the electronic device, and controlling the cathode voltage of the display screen to adjust to the corresponding target voltage value based on the power supply access information. In this embodiment, if the electronic device is connected to an external power source, the brightness of the display screen may be relatively high, and the cathode voltage of the display screen is controlled to be adjusted to a relatively high voltage value. If the electronic device is not connected to an external power source and is powered by its own battery module, the brightness of the display screen may be relatively low, and the cathode voltage of the display screen is controlled to be adjusted to a relatively low voltage value.

[0114] It should be noted that the above embodiments are mainly described using the example of different display areas in the display screen sharing the same cathode electrode. This application does not limit this approach. In other embodiments of this application, different display areas in the display screen may also be provided with cathode voltages through different cathode electrodes. The following describes the case where different display areas in the display screen may also be provided with cathode voltages through different cathode electrodes.

[0115] Optionally, in one embodiment of this application, controlling the cathode voltage of the display screen to adjust to a target voltage value corresponding to the usage mode includes: determining a target display area of ​​the display screen based on the usage mode, wherein the target display area is an available display area for outputting content to be displayed; and controlling the cathode voltage provided by the target cathode electrode corresponding to the available display area to adjust to the target voltage value corresponding to the usage mode. It should be noted that in this embodiment, different display areas in the display screen correspond to different cathode voltages.

[0116] Specifically, in one embodiment of this application, the display screen includes at least a first display area and a second display area, and the electronic device includes at least a first cathode electrode and a second cathode electrode. The first cathode electrode provides a cathode voltage to the first display area, and the second cathode electrode provides a cathode voltage to the second display area. It should be noted that in this embodiment, when the electronic device is in different application modes, different display areas on the display screen are used to output display content. In this case, the control method can adjust only the cathode voltage output by the cathode electrode corresponding to the display area outputting the display content, or it can adjust the voltage output by the cathode electrodes corresponding to all display areas. This application does not limit this adjustment; it depends on the specific circumstances.

[0117] Based on the above embodiments, in one embodiment of this application, adjusting the cathode voltage provided by the cathode electrode corresponding to the available display area to a target voltage value corresponding to the usage mode includes at least one of the following:

[0118] When the electronic device is in the fifth usage mode, the cathode voltage provided by the first cathode electrode corresponding to the first display area of ​​the display screen is adjusted to the fifth voltage value corresponding to the fifth usage mode;

[0119] When the electronic device is in the sixth usage mode, the cathode voltage provided by the second cathode electrode corresponding to the second display area of ​​the display screen is adjusted to the sixth voltage value corresponding to the sixth usage mode;

[0120] When the electronic device is in the seventh usage mode, the cathode voltage provided by the first cathode electrode corresponding to the first display area of ​​the display screen is adjusted to the seventh voltage value corresponding to the seventh usage mode, and the cathode voltage provided by the second cathode electrode corresponding to the second display area of ​​the display screen is adjusted to the eighth voltage value corresponding to the seventh usage mode.

[0121] Optionally, in one embodiment of this application, controlling the cathode voltage provided by the cathode electrode corresponding to the usable display area to adjust to a target voltage value corresponding to the usage mode includes: when the electronic device is in a fifth usage mode, controlling the cathode voltage provided by the first cathode electrode corresponding to the first display area of ​​the display screen to adjust to a fifth voltage value corresponding to the fifth usage mode. It should be noted that in this embodiment, the cathode voltage provided by the cathode electrodes of other display areas on the display screen besides the first display area may or may not be adjusted; this application does not limit this and depends on the specific circumstances. It should also be noted that in this embodiment, the first display area may be a usable display area or a non-usable display area. When the first display area is a usable display area, the cathode voltage provided by the cathode electrodes of other display areas on the display screen besides the first display area may be reduced or stopped.

[0122] In another embodiment of this application, adjusting the cathode voltage provided by the cathode electrode corresponding to the usable display area to a target voltage value corresponding to the usage mode includes: when the electronic device is in a sixth usage mode, adjusting the cathode voltage provided by the second cathode electrode corresponding to the second display area of ​​the display screen to a sixth voltage value corresponding to the sixth usage mode. It should be noted that in this embodiment, the cathode voltage provided by the cathode electrodes of other display areas on the display screen besides the second display area may or may not be adjusted; this application does not limit this and it depends on the specific circumstances. It should also be noted that in this embodiment, the second display area may be a usable display area or a non-usable display area. When the second display area is a usable display area, the cathode voltage provided by the cathode electrodes of other display areas on the display screen besides the second display area may be reduced or stopped.

[0123] In another embodiment of this application, controlling the cathode voltage provided by the cathode electrode corresponding to the usable display area to adjust to a target voltage value corresponding to the usage mode includes: when the electronic device is in a seventh usage mode, controlling the cathode voltage provided by the first cathode electrode corresponding to the first display area of ​​the display screen to adjust to a seventh voltage value corresponding to the seventh usage mode, and controlling the cathode voltage provided by the second cathode electrode corresponding to the second display area of ​​the display screen to adjust to an eighth voltage value corresponding to the seventh usage mode. Optionally, in this embodiment, if the first display area is a usable display area and the second display area is a non-usable display area, when the electronic device is in a seventh usage mode, controlling the cathode voltage provided by the first cathode electrode corresponding to the first display area of ​​the display screen to adjust to a seventh voltage value corresponding to the seventh usage mode, controlling the cathode voltage provided by the second cathode electrode corresponding to the second display area of ​​the display screen to adjust to a smaller eighth voltage value, so as to reduce the power consumption of the display screen, thereby reducing the power consumption of the electronic device.

[0124] Optionally, based on the above embodiments, in one embodiment of this application, before the electronic device switches to the seventh usage mode, both the first display area and the second display area are available display areas; after the electronic device switches to the seventh usage mode, the first display area is available display area, and the second display area is unavailable display area, such as when the display screen switches from a full-screen usage scenario to a partial-screen usage scenario; in another embodiment of this application, before the electronic device switches to the seventh usage mode, both the first display area and the second display area are available display areas and are different components of the same overall display area; after the electronic device switches to the seventh usage mode, both the first display area and the second display area are available display areas, but the first display area and the second display area are two independent display areas, such as when the display screen switches from full-screen display to split-screen display.

[0125] It should be noted that in the above embodiments, when different cathode electrodes provide cathode voltage to different display areas in the display screen, the cathode voltage output by the cathode electrode for the display area corresponding to the same cathode electrode can be a fixed value, or it can be adjusted with reference to the adjustment method of the cathode voltage of the same cathode electrode corresponding to each display area when the electronic device is in different modes in the above embodiments. This application does not limit this, and it depends on the specific situation.

[0126] In summary, the control method provided in this application embodiment can control the cathode voltage of the display screen to be adjusted to a target voltage value corresponding to the usage mode of the electronic device, thereby adjusting the cathode voltage according to the cathode voltage requirement of the display screen under the target usage mode, rather than controlling the cathode voltage to always maintain a large voltage value, thereby reducing the light emission power consumption of the display screen and thus reducing the power consumption of the electronic device.

[0127] In addition, this application embodiment also provides an electronic device, which may be a mobile phone, tablet computer, wearable device, in-vehicle device, augmented reality (AR) / virtual reality (VR) device, laptop computer, ultra-mobile personal computer (UMPC), netbook, personal digital assistant (PDA), etc. This application embodiment does not impose any limitations on this.

[0128] Specifically, in this embodiment, as shown in FIG3, the electronic device includes:

[0129] Display screen 10;

[0130] Power supply module 20, which is used to supply power to the display screen 10;

[0131] The controller 30 is used to determine the usage mode of the electronic device in order to control the cathode voltage of the display screen 10 to adjust to a target voltage value corresponding to the usage mode.

[0132] It should be noted that, in the embodiments of this application, at least one parameter of the available display area of ​​the electronic device's display screen differs under different usage modes. This difference in at least one parameter of the electronic device's display screen under different usage modes may include at least one of the following: different display area, different display brightness, different display resolution, and different display refresh rate.

[0133] Specifically, in one embodiment of this application, the power supply module can be a power management chip or a power delivery controller; the controller can be a display controller for the display screen or a system processor for the electronic device; this application does not limit this, and it depends on the specific circumstances.

[0134] It should be noted that, in this embodiment, the controller can be used to execute the control methods provided in the above embodiments; specifically, if the controller is a display controller, the display controller can be used to execute the control methods provided in the above embodiments; if the controller is a system processor of the electronic device, the system processor (i.e., the processor) can be used to execute the control methods provided in the above embodiments.

[0135] Optionally, in one embodiment of this application, the electronic device includes a first body and a second body rotatably connected, a portion of the display screen is displayed on a first surface of the first body, and the remaining portion of the display screen is housed within the first body or the second body. It should be noted that in this embodiment, only the portion of the display screen located on the first body is a usable display area.

[0136] Specifically, in one embodiment of this application, when the electronic device is in different usage modes, at least a portion of the display screen is pulled out from the first body or stored in the first body; in another embodiment of this application, when the electronic device is in different usage modes, at least a portion of the display screen is pulled out from the second body or stored in the second body; in yet another embodiment of this application, at least a portion of the display screen is pulled out from the connecting device between the first body and the second body or stored in the connecting device between the first body and the second body, such as a rollable screen. This application does not limit this, and it depends on the specific circumstances.

[0137] It should be noted that in the above embodiments, the display screen may have only two display states. In one display state, the available display area of ​​the display screen is the maximum display area that can be used for display. In the other state, the available display area of ​​the display screen is a fixed area smaller than the maximum display area that can be used for display. The display screen may also have multiple display states. In different display states, the available display area of ​​the display screen is different. Taking the case where at least a part of the display screen is pulled out from the first body or stored in the first body as an example, the display screen can maintain a stable state at any position during the process of being pulled out from the first body or stored in the first body. That is, the available display area of ​​the display screen can maintain a stable state at any position during the process of the available display area increasing from the minimum display area to the maximum display area.

[0138] Based on the above embodiments, in one embodiment of this application, the controller is configured to: in response to the electronic device switching from a current first usage mode to a target usage mode, control the cathode voltage of the display screen to adjust from a current first voltage value to a target voltage value corresponding to the target usage mode, wherein the first voltage value is greater than or less than the target voltage value; wherein the available display area of ​​the display screen in the first usage mode is different from the available display area in the target usage mode. Optionally, the area of ​​the available display area of ​​the display screen in the first usage mode is different from the area of ​​the available display area in the target usage mode, and / or, the brightness of the available display area of ​​the display screen in the first usage mode is different from the brightness of the available display area in the target usage mode, and / or, the resolution of the available display area of ​​the display screen in the first usage mode is different from the resolution of the available display area in the target usage mode, etc.

[0139] As shown in Figures 4 and 5, these figures illustrate the available display area of ​​the display screen in two different usage modes. The area of ​​the available display area in Figure 4 is larger than that in Figure 5. The voltage drop of the cathode voltage from the cathode voltage input terminal to the last light-emitting element differs between the two usage modes. For example, in the usage mode corresponding to Figure 4, the voltage drop is approximately 2V, while in the usage mode corresponding to Figure 5, the voltage drop is approximately 1V.

[0140] Optionally, in one embodiment of this application, the controller determines the required cathode voltage value for the available display area based on the usage mode of the electronic device, including: the display controller sends a control command to the power supply module based on the required cathode voltage value for the available display area, so that the power supply module responds to the control command and outputs different numbers of pulses, thereby providing different numbers of pulses to the cathode electrode corresponding to the display screen, so that the cathode electrode outputs different cathode voltages to the available display area.

[0141] For example, when the electronic device switches from the usage mode corresponding to Figure 4 to the usage mode corresponding to Figure 5, in the usage mode corresponding to Figure 4, the cathode voltage input to the cathode voltage input terminal of the display screen is approximately -3V, that is, the cathode voltage provided to the display screen by the cathode electrode is -3V. In the usage mode corresponding to Figure 5, the cathode voltage of the display screen is approximately -2V, that is, the cathode voltage provided to the display screen by the cathode electrode is -2V. This reduces the power consumption of the display screen while ensuring the display brightness of the usable display area, thereby reducing the power consumption of the electronic device. Assuming that in this case, in the usage mode corresponding to Figure 5, the current flowing through the light-emitting element in the display screen is 1A, then the power consumption that the electronic device can save is 1*(5+3)-1*(5+2)=1W. Compared to using the cathode voltage corresponding to Figure 4, using the cathode voltage corresponding to Figure 5 makes the display screen save power.

[0142] It should be noted that, in this embodiment, if the controller is a display controller, the controller directly sends a control command to the power supply module based on the cathode voltage value required by the available display area, so that the power supply module responds to the control command and outputs different numbers of pulses; if the controller is a system processor, the controller controls the display controller to send a control command to the power supply module based on the cathode voltage value required by the available display area, so that the power supply module responds to the control command and outputs different numbers of pulses.

[0143] In another embodiment of this application, the electronic device includes a first body and a second body rotatably connected, and the display screen includes a first region disposed on a second surface of the first body and a second region disposed on a third surface of the second body; optionally, in this embodiment, the display screen can be a foldable screen, but this application does not limit it, as long as the display area of ​​the display screen is partially located on the first body and partially located on the second body, and the angle between the portion of the display screen located on the first body and the portion of the display screen located on the second body can change.

[0144] Based on the above embodiments, in one embodiment of this application, as shown in FIG5, the display screen further includes: a first cathode electrode 41 providing cathode voltage in the first region 11 and a second cathode electrode 42 providing cathode voltage in the second region 12. Optionally, in this embodiment, the controller is used to control the cathode voltage provided by the first cathode electrode 41 or the second cathode electrode 42 to adjust to the corresponding target voltage value in response to the electronic device entering the target usage mode. It should be noted that in this embodiment, the implementation method of the controller controlling the cathode voltage provided by the first cathode electrode 41 or the second cathode electrode 42 to adjust to the corresponding target voltage value in response to the electronic device entering the target usage mode can refer to the adjustment method provided by the control method provided in any of the above embodiments, and will not be repeated here.

[0145] In another embodiment of this application, when the electronic device includes a first body and a second body rotatably connected, and the display screen includes a first region disposed on a second surface of the first body and a second region disposed on a third surface of the second body, the electronic device may also directly control the cathode electrode of the display screen to output a cathode voltage instead of controlling the cathode voltage of the display screen to the target voltage value corresponding to the usage mode through the display controller. In this case, regardless of the operating mode of the electronic device, the first cathode electrode and the second cathode electrode always output a fixed cathode voltage. It should be noted that in this embodiment, although the value of the cathode voltage output by the first cathode electrode and the second cathode electrode is not adjusted, the number of light-emitting units driven by the first cathode electrode and the second cathode electrode is reduced, and the voltage drop generated on their signal transmission path will be reduced, which can also reduce the power consumption of the electronic device.

[0146] In summary, the electronic device provided in this application embodiment can reduce the power consumption of the electronic device by reducing the light-emitting power consumption of the display screen and thus reducing the power consumption of the display screen.

[0147] The various embodiments in this specification are described in a progressive, parallel, or combined manner. Each embodiment focuses on its differences from other embodiments, and similar or identical parts between embodiments can be referred to interchangeably. For the apparatuses disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and relevant parts can be referred to the method section.

[0148] It should be noted that, in the description of this application, the accompanying drawings and embodiments are illustrative rather than restrictive. It should also be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0149] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control method, comprising: Determine the usage mode of the electronic device, wherein at least one parameter of the target display area of ​​the display screen of the electronic device is different in different usage modes; The cathode voltage of the display screen is adjusted to a target voltage value corresponding to the usage mode.

2. The method according to claim 1, wherein, Adjusting the cathode voltage of the display screen to a target voltage value corresponding to the usage mode includes at least one of the following: In response to the electronic device switching from the current first usage mode to the target usage mode, the cathode voltage of the display screen is controlled to be adjusted from the current first voltage value to the target voltage value corresponding to the target usage mode, wherein the first voltage value is greater than or less than the target voltage value, and the display parameters of the target display area in the first usage mode are different from the display parameters in the target usage mode; The power supply module of the control electronic device outputs the number of pulses to the display screen based on the usage mode, so as to adjust the cathode voltage of the display screen to the target voltage value.

3. The method according to claim 2, wherein, Adjusting the cathode voltage of the display screen from the current first voltage value to a target voltage value corresponding to the target usage mode includes at least one of the following: In response to the electronic device switching from a current first usage mode to a second usage mode, the cathode voltage of the display screen is controlled to be increased from the first voltage value to the second voltage value, wherein the display area and / or display brightness of the available display area of ​​the display screen in the first usage mode is less than the display area and / or display brightness of the available display area in the second usage mode; In response to the electronic device switching from a current first usage mode to a third usage mode, the cathode voltage of the display screen is controlled to be reduced from the first voltage value to the third voltage value, wherein the display area and / or display brightness of the available display area of ​​the display screen in the first usage mode are greater than the display area and / or display brightness of the available display area in the third usage mode; In response to the electronic device switching from the current first usage mode to the fourth usage mode, the cathode voltage of the display screen is controlled to be adjusted from the first voltage value to the fourth voltage value, wherein the display brightness or display area of ​​the target display area in the fourth usage mode is different from the display brightness or display area in the first usage mode, and the target display area is a non-usable display area in the display screen.

4. The method according to claim 1, wherein, Adjusting the cathode voltage of the display screen to a target voltage value corresponding to the usage mode includes at least one of the following: The information of the usage mode of the electronic device is given to the display controller of the display screen, and the display controller sends control commands to the power management chip of the electronic device to adjust the number of pulses output to the display screen, so that the cathode voltage of the display screen is adjusted to the target voltage value. Obtain target reference information of the electronic device in the target usage mode, and control the cathode voltage of the display screen to be adjusted to the corresponding target voltage value based on the target reference information.

5. The method according to claim 4, wherein, Controlling the cathode voltage of the display screen to adjust to the corresponding target voltage value based on the target reference information includes at least one of the following: Obtain the position distribution information of the target display area in the display screen, and control the cathode voltage of the display screen to be adjusted to the corresponding target voltage value based on the position distribution information. The target display area includes any one of the available display area, split screen area or non-available display area in the display screen. The configuration information of the display screen is obtained, and the cathode voltage of the target cathode of the display screen is adjusted to the corresponding target voltage value based on the configuration information. The configuration information includes the configuration information of the cathode electrode of the display screen. Obtain connection status information between the electronic device and the target display device, and control the cathode voltage of the display screen to be adjusted to the corresponding target voltage value based on the connection status information; Obtain the operating application information of the electronic device, and control the cathode voltage of the display screen to adjust to the corresponding target voltage value based on the operating application information; Obtain the power input information of the electronic device, and control the cathode voltage of the display screen to adjust to the corresponding target voltage value based on the power input information.

6. The method according to claim 1, wherein, Adjusting the cathode voltage of the display screen to a target voltage value corresponding to the usage mode includes: The target display area of ​​the display screen is determined based on the usage mode. The target display area is an available display area for outputting the target content to be displayed. The cathode voltage provided by the target cathode electrode corresponding to the available display area is adjusted to a target voltage value corresponding to the usage mode; In the display screen, different display areas correspond to different cathode electrodes.

7. The method according to claim 6, wherein, Adjusting the cathode voltage supplied by the cathode electrode corresponding to the available display area to a target voltage value corresponding to the usage mode includes at least one of the following: When the electronic device is in the fifth usage mode, the cathode voltage provided by the first cathode electrode corresponding to the first display area of ​​the display screen is adjusted to the fifth voltage value corresponding to the fifth usage mode; When the electronic device is in the sixth usage mode, the cathode voltage provided by the second cathode electrode corresponding to the second display area of ​​the display screen is adjusted to the sixth voltage value corresponding to the sixth usage mode; When the electronic device is in the seventh usage mode, the cathode voltage provided by the first cathode electrode corresponding to the first display area of ​​the display screen is adjusted to the seventh voltage value corresponding to the seventh usage mode, and the cathode voltage provided by the second cathode electrode corresponding to the second display area of ​​the display screen is adjusted to the eighth voltage value corresponding to the seventh usage mode.

8. An electronic device, comprising: Display screen; A power supply module is used to supply power to the display screen; A controller is used to determine the usage mode of the electronic device in order to control the cathode voltage of the display screen to adjust to a target voltage value corresponding to the usage mode; In different usage modes, at least one parameter of the available display area of ​​the electronic device's display screen is different.

9. The electronic device according to claim 8, wherein, The electronic device includes a first body and a second body that are rotatably connected. A portion of the display screen is displayed on a first side of the first body, and the remaining portion of the display screen is housed in the first body or the second body. When the electronic device is in different usage modes, at least a portion of the display screen is pulled out from the first body or the second body or housed in the first body or the second body. In response to the electronic device switching from the current first usage mode to the target usage mode, the controller controls the cathode voltage of the display screen to be adjusted from the current first voltage value to a target voltage value corresponding to the target usage mode, wherein the first voltage value is greater than or less than the target voltage value; The available display area of ​​the display screen in the first usage mode is different from the available display area in the target usage mode.

10. The electronic device according to claim 8, wherein, The electronic device includes a first body and a second body that are rotatably connected, and the display screen includes a first region disposed on a second side of the first body and a second region disposed on a third side of the second body; The display screen further includes a first cathode electrode that provides a cathode voltage to the first region and a second cathode electrode that provides a cathode voltage to the second region; In response to the electronic device entering the target usage mode, the controller adjusts the cathode voltage provided by the first cathode electrode or the second cathode electrode to the corresponding target voltage value.

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