Display apparatus and control method of display apparatus

Abstract

The embodiment of the invention belongs to the technical field of display, and provides display equipment and a control method of the display equipment. The first light-emitting assembly and the second light-emitting assembly are alternately connected for multiple times according to the first signal in a preset lightening period through a preset switch, so that the first light-emitting assembly and the second light-emitting assembly are alternately lightened in the preset lightening period; and the working voltage is output to the target light-emitting assembly through the preset switch in the preset lightening period, so that the target light-emitting assembly is lightened when connected, and the target light-emitting assembly is the first light-emitting assembly or the second light-emitting assembly. According to the backlight driving circuit, the double screens are controlled to be quickly and alternately lightened in one lightening period, and the instantaneous current of the backlight driving circuit is reduced, so that the transient impact of the battery voltage is reduced, and the normal work of the backlight driving chip can be maintained.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of display technologies. More specifically, the present application relates to a display device and a control method for the display device. Background Art

[0002] Virtual Reality (VR) display devices are divided into left and right screens according to the characteristics of the human eye. The left and right screens are respectively provided with corresponding backlight light-emitting diodes (LEDs), and the backlight LEDs are respectively lit by two backlight driving chips to light the left and right screens. However, the dual chips will increase the cost and board space of the VR display device.

[0003] Currently, in order to solve the above problems, in the related art, one backlight driving chip is used to light the left and right screens. However, the input voltage of the backlight driving circuit is provided by the battery voltage. When the left and right screens are lit simultaneously, the instantaneous value of the input current of the backlight driving circuit is relatively high. For example, it can reach more than 2 A (amperes), and the battery voltage is transiently pulled down by several hundred millivolts, which easily causes the backlight driving chip to be under-voltage and unable to work properly. Summary of the Invention

[0004] Embodiments of the present application provide a display device and a control method for the display device, which can be used to solve the problem in the related art that when the left and right screens are lit simultaneously, the instantaneous value of the input current of the backlight driving circuit is relatively high, the battery voltage is transiently pulled down by several hundred millivolts, and it is easy to cause the input of the backlight driving chip to be under-voltage and unable to work properly.

[0005] In a first aspect, embodiments of the present application provide a display device, where the display device includes:

[0006] A display screen configured to display an image; the display screen includes a first display screen and a second display screen;

[0007] A first light-emitting component disposed on the back of the first display screen and configured to provide a light source for backlighting the first display screen when lit;

[0008] A second light-emitting component disposed on the back of the second display screen and configured to provide a light source for backlighting the second display screen when lit;

[0009] A backlight driving circuit, including:

[0010] A preset switch respectively connected to the first light-emitting component and the second light-emitting component, and configured to alternately connect the first light-emitting component and the second light-emitting component multiple times according to a first signal within a preset lighting period, so that the first light-emitting component and the second light-emitting component are alternately lit within the preset lighting period;

[0011] A backlight driving component, connected to the preset switch, is configured to output a working voltage to a target light-emitting component through the preset switch within the preset lighting period according to a second signal, so that the target light-emitting component is lit when it is turned on, and the target light-emitting component is the first light-emitting component or the second light-emitting component.

[0012] In this embodiment, the display device includes a first display screen, a second display screen, a first light-emitting component, a second light-emitting component, and a backlight driving circuit. Among them, the first light-emitting component is arranged on the back of the first display screen and is configured to provide a light source for backlighting the first display screen when lit. The second light-emitting component is arranged on the back of the second display screen and is configured to provide a light source for backlighting the second display screen when lit. The backlight driving circuit includes a preset switch and a backlight driving component. Among them, the preset switch is configured to alternately connect the first light-emitting component and the second light-emitting component multiple times within a preset lighting period according to a first signal, so that the first light-emitting component and the second light-emitting component are alternately lit within the preset lighting period. The backlight driving component is configured to output a working voltage to a target light-emitting component through the preset switch within the preset lighting period according to a second signal, so that the target light-emitting component is lit when it is turned on, and the target light-emitting component is the first light-emitting component or the second light-emitting component. By controlling the two screens to be quickly alternately lit within one lighting period in this application, the instantaneous current of the backlight driving circuit is reduced, thereby reducing the transient impact of the battery voltage and maintaining the normal operation of the backlight driving chip.

[0013] In some embodiments of the present application, the display device further includes a main control component. The main control component is respectively connected to the backlight driving component and the preset switch, and the main control component is configured to:

[0014] Send the second signal to the backlight driving component;

[0015] Send the first signal to the preset switch.

[0016] In this embodiment, the first signal and the second signal can be sent through the main control component to realize the display control of the display screen.

[0017] In some embodiments of the present application, the main control component is configured to:

[0018] Obtain the refresh rate of the display screen, the display period, the first backlight brightness per unit time within the preset lighting period, and the second backlight brightness required within the display period, where the display period is the duration for the display screen to refresh one frame of image;

[0019] Determine the high-level duration of the second signal according to the refresh rate, the display period, the first backlight brightness, and the second backlight brightness, where the high-level duration is used to determine the preset lighting period.

[0020] In this embodiment, when determining the second signal, the main control component can determine the second signal based on the determined refresh rate, display period, first backlight brightness, and second backlight brightness of the display screen, so as to accurately implement the display control of the display screen.

[0021] In some embodiments of the present application, the main control component is configured to:

[0022] Determine the number of alternating lighting times within the preset lighting period according to the lighting duration and the preset lighting period, where the lighting duration is the duration of one lighting of the first display screen and the second display screen;

[0023] Determine the high-level duration and low-level duration of the first signal within the preset lighting period according to the number of alternating lighting times.

[0024] In this embodiment, the number of times of double-screen alternating lighting within a preset lighting period can be determined, and then the double screens can be alternately turned on through the high and low levels of the first signal.

[0025] In some embodiments of the present application, the high-level duration and the low-level duration of the first signal are the same.

[0026] In this embodiment, the high-level duration and the low-level duration of the first signal are the same, which can make the lighting time of the left and right screens the same within the preset lighting period, thus ensuring the same brightness of the left and right screens.

[0027] In some embodiments of the present application, the backlight driving component is configured to:

[0028] When the second signal is high level and the first signal is high level, turn on the first light-emitting component;

[0029] When the second signal is high level and the first signal is low level, turn on the second light-emitting component;

[0030] When the second signal is low level, turn off the first light-emitting component and the second light-emitting component.

[0031] In this embodiment, when the second signal is high level, the corresponding display screen can be turned on through the high and low levels of the first signal, and when the second signal is low level, both screens can be controlled to turn off simultaneously.

[0032] In some embodiments of the present application, the first light-emitting component and the second light-emitting component are connected to the backlight driving component through a first connection line;

[0033] The backlight driving circuit further includes: a first resistor, a first end of the first resistor is connected to the first connection line, and a second end of the first resistor is grounded.

[0034] In this embodiment, by adding a first resistor between the light-emitting component and the backlight driving component, the current value passing through the light-emitting component can be set.

[0035] In some embodiments of the present application, the backlight driving circuit further includes a power supply battery and a first capacitor. The power supply battery is connected to the power supply interface of the backlight driving component through a second connection line. A first end of the first capacitor is connected to the second connection line, and a second end of the first capacitor is grounded;

[0036] The power supply battery is configured to provide a driving voltage for the backlight driving circuit.

[0037] In this embodiment, the backlight driving circuit is powered by the power supply battery, and a capacitor is connected to the power supply interface of the backlight driving component, which can reduce power supply noise, provide a stable power supply to the backlight driving component, and avoid affecting the chip due to instantaneous voltage changes during the power supply process.

[0038] In a second aspect, the present application provides a display device, which includes:

[0039] A display screen configured to display an image; the display screen includes a first display screen and a second display screen;

[0040] A first light-emitting component is disposed on the back of the first display screen and is configured to provide a backlight source for the first display screen when lit;

[0041] A second light-emitting component is disposed on the back of the second display screen and is configured to provide a backlight source for the second display screen when lit;

[0042] A backlight driving circuit is connected to the first light-emitting component and the second light-emitting component, and the backlight driving circuit is configured to:

[0043] Within a preset lighting period, the first light-emitting component and the second light-emitting component are alternately turned on multiple times, and a working voltage is output to the target light-emitting component when the target light-emitting component is turned on, so that the target light-emitting component is lit when it is turned on, and the target light-emitting component is the first light-emitting component or the second light-emitting component.

[0044] In this embodiment, a backlight driving circuit is configured to alternately turn on the first light-emitting component and the second light-emitting component multiple times within a preset lighting period, and output a working voltage to the target light-emitting component when the target light-emitting component is turned on, so that the target light-emitting component is lit when it is turned on. The target light-emitting component is the first light-emitting component or the second light-emitting component. In this application, by controlling the dual screens to be quickly alternately lit within one lighting period, the instantaneous current of the backlight driving circuit is reduced, thereby reducing the transient impact on the battery voltage, and the normal operation of the backlight driving chip can be maintained.

[0045] In a third aspect, the present application provides a control method for a display device, where the display device includes:

[0046] a display screen configured to display an image; the display screen includes a first display screen and a second display screen;

[0047] a first light-emitting component disposed on the back of the first display screen and configured to provide a light source for backlighting the first display screen when lit;

[0048] a second light-emitting component disposed on the back of the second display screen and configured to provide a light source for backlighting the second display screen when lit;

[0049] a backlight driving circuit including a preset switch and a backlight driving component;

[0050] The method includes:

[0051] Through the preset switch, within a preset lighting period, according to a first signal, alternately turn on the first light-emitting component and the second light-emitting component multiple times, so that the first light-emitting component and the second light-emitting component are alternately lit within the preset lighting period;

[0052] Through the backlight driving component, within the preset lighting period, output a working voltage to the target light-emitting component through the preset switch, so that the target light-emitting component is lit when it is turned on. The target light-emitting component is the first light-emitting component or the second light-emitting component.

[0053] In this embodiment, through a preset switch within a preset lighting period, according to a first signal, alternately turn on the first light-emitting component and the second light-emitting component multiple times, so that the first light-emitting component and the second light-emitting component are alternately lit within the preset lighting period; through the backlight driving component according to a second signal, within the preset lighting period, output a working voltage to the target light-emitting component through the preset switch, so that the target light-emitting component is lit when it is turned on. The target light-emitting component is the first light-emitting component or the second light-emitting component. In this application, by controlling the dual screens to be quickly alternately lit within one lighting period, the instantaneous current of the backlight driving circuit is reduced, thereby reducing the transient impact on the battery voltage, and the normal operation of the backlight driving chip can be maintained.

[0054] In a fourth aspect, the present application provides a computer-readable storage medium storing computer-executable instructions, which are used to implement the method described in the third aspect when executed by a computer.

[0055] The computer-readable storage medium provided by the embodiments of the present application can execute the technical solutions in the above method embodiments, and the beneficial effects are similar, so details will not be repeated here.

[0056] In a fourth aspect, the present application provides a computer program product including a computer program, which is used to implement the method described in the third aspect when executed by a computer.

[0057] The computer program product provided by the embodiments of the present application can execute the technical solutions in the above method embodiments, and the beneficial effects are similar, so details will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the embodiments of the present application or the implementation manners in the related art, the following briefly introduces the drawings required to be used in the description of the embodiments or the related art. Obviously, the drawings in the following description are some embodiments of the present application, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0059] Figure 1 A schematic diagram of lighting a dual screen by staggering the lighting time domain in the related art;

[0060] Figure 2 A schematic diagram of the structure of a display device provided by an embodiment of the present application;

[0061] Figure 3 A schematic diagram of the structure of another display device provided by an embodiment of the present application;

[0062] Figure 4 A schematic diagram of the structure of another display device provided by an embodiment of the present application;

[0063] Figure 5 A schematic diagram of the second signal and the first signal of the present application example;

[0064] Figure 6 A schematic diagram of the PWML signal of the embodiment of the present application and the conventional PWML signal;

[0065] Figure 7 A schematic diagram of the structure of another display device provided by an embodiment of the present application;

[0066] Figure 8Schematic diagram of another display device provided by an embodiment of the present application;

[0067] Figure 9 Flow chart of a control method for a display device provided by an embodiment of the present application;

[0068] Figure 10 Schematic diagram of another display device provided by an embodiment of the present application. Detailed implementation manners

[0069] To make the objectives, implementation manners, and advantages of the present application clearer, the following will clearly and completely describe the exemplary implementation manners of the present application with reference to the accompanying drawings in the exemplary embodiments of the present application. Apparently, the described exemplary embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0070] It should be noted that the brief description of the terms in the present application is only for facilitating the understanding of the subsequent described implementation manners, rather than intending to limit the implementation manners of the present application. Unless otherwise specified, these terms should be understood in their ordinary and general meanings.

[0071] In addition, the terms "include" and "have" and any of their variations are intended to cover but not be exclusive of inclusion. For example, a product or device including a series of components does not necessarily have to be limited to those clearly listed components, but may include other components not clearly listed or inherent to these products or devices.

[0072] In the display control of a VR display device, for the method of lighting the left and right screens through a single backlight driving chip, the input voltage of the backlight driving circuit is provided by the battery voltage (such as 3.2V - 4.2V). Taking 3.2V - 4.2V as an example, the output voltage of the backlight driving circuit is approximately 22V - 30V. When the left and right screens are lit simultaneously, the total conduction current needs to be 160mA (milliamperes) - 300mA. The instantaneous value of the input current of the backlight driving circuit is relatively high, for example, it can reach more than 2A (amperes), and the battery voltage is transiently pulled down by several hundred millivolts, which easily causes the backlight driving chip to be undervoltaged and unable to work properly. For example, there is a range near the rated voltage of the backlight driving chip. For example, this range is generally ±15%. If the voltage is lower than -15% of this voltage, it can be considered that the backlight driving chip is undervoltaged.

[0073] Currently, the instantaneous value of the input current of the backlight driving circuit can be reduced by the method of staggered lighting in the time domain. Specifically, Figure 1 Schematic diagram of lighting a dual screen by the method of staggered lighting in the time domain in the related art. As Figure 1 shown, it can be in different lighting cycles ( Figure 1During each high-level duration (which is one lighting cycle), the left and right screens are lit in a staggered manner. For example, in the current lighting cycle, the left screen is lit, and in the next lighting cycle, the right screen is lit, reducing the transient impact on the battery voltage. However, the staggered lighting in the time domain causes the pixel data of the left and right screens not to be lit synchronously after the refresh is completed, resulting in a delay in the case of high frame rates and poor real-time display.

[0074] Therefore, the present application provides a display device that reduces the instantaneous current of the backlight driving circuit by controlling the left and right dual screens to be quickly alternately lit within a preset lighting cycle, thereby reducing the transient impact on the battery voltage and maintaining the normal operation of the backlight driving chip.

[0075] In an embodiment of the present application, the display device may be a VR display device, such as a VR head-mounted display device.

[0076] The technical solutions of the present application will be described in detail below with reference to specific embodiments. These specific embodiments may be combined with each other or exist independently. For the same or similar concepts or processes, they may not be repeated in some embodiments. The embodiments of the present application will be described below with reference to the drawings.

[0077] Figure 2 A schematic structural diagram of a display device provided in an embodiment of the present application is shown as Figure 2 As shown, the display device 10 includes a display screen, a first light-emitting component 101, a second light-emitting component 102, and a backlight driving circuit 103.

[0078] Among them, the display screen includes a first display screen 104 and a second display screen 105, and the display screen is configured to display an image, specifically, the image can be displayed through the first display screen 104 and the second display screen 105.

[0079] The first light-emitting component 101 is disposed on the back of the first display screen 104 and is configured to provide a backlight source for the first display screen 104 when lit. The second light-emitting component 102 is disposed on the back of the second display screen 105 and is configured to provide a backlight source for the second display screen 105 when lit.

[0080] The display screen can display an image when the first light-emitting component 101 and the second light-emitting component 102 are lit.

[0081] The backlight driving circuit 103 is configured to:

[0082] Within a preset lighting cycle, alternately connect the first light-emitting component 101 and the second light-emitting component 102 multiple times, and output a working voltage to the target light-emitting component when connecting the target light-emitting component, so that the target light-emitting component is lit when connected, and the target light-emitting component is the first light-emitting component 101 or the second light-emitting component 102.

[0083] Specifically, Figure 3 FIG. is a schematic structural diagram of another display device provided by an embodiment of the present application. As Figure 3 shown, the backlight driving circuit 103 includes a preset switch 31 and a backlight driving component 32. The preset switch 31 is electrically connected to the first light-emitting component 101, the second light-emitting component 102, and the backlight driving component 32 respectively.

[0084] Among them, the preset switch 31 is configured to alternately connect the first light-emitting component 101 and the second light-emitting component 102 multiple times according to the first signal within a preset lighting period, so that the first light-emitting component 101 and the second light-emitting component 102 are alternately lit within the preset lighting period.

[0085] The backlight driving component 32 is configured to output a working voltage to the target light-emitting component through the preset switch 31 within a preset lighting period according to the second signal, so that the target light-emitting component is lit when it is turned on. The target light-emitting component is the first light-emitting component 101 or the second light-emitting component 102.

[0086] Exemplarily, the first light-emitting component 101 and the second light-emitting component 102 may be LEDs, the backlight driving component 32 may be a backlight driving chip of the display device 10, and the preset switch 31 may be a single-pole double-throw switch.

[0087] In this embodiment, the preset switch 31 is configured to alternately connect the first light-emitting component 101 and the second light-emitting component 102 multiple times according to the first signal within a preset lighting period, so that the first light-emitting component 101 and the second light-emitting component 102 are alternately lit within the preset lighting period. The backlight driving component 32 is configured to output a working voltage to the target light-emitting component through the preset switch 31 within a preset lighting period according to the second signal, so that the target light-emitting component is lit when it is turned on. The target light-emitting component is the first light-emitting component 101 or the second light-emitting component 102. The present application controls the two screens to be alternately lit quickly within a lighting period, reduces the instantaneous current of the backlight driving circuit 103, thereby reducing the transient impact of the battery voltage, and can maintain the normal operation of the backlight driving component 32.

[0088] That is to say, the first light-emitting component 101 and the second light-emitting component 102 are alternately lit quickly, ensuring the real-time display of the first display screen 104 and the second display screen 105. At the same time, the instantaneous current of the backlight driving circuit 103 is the single-screen lighting current, which is half of the instantaneous current of the backlight driving circuit 103 when the first display screen 104 and the second display screen 105 are lit simultaneously, thereby reducing the transient impact of the battery voltage and ensuring the working stability of the backlight driving circuit 103.

[0089] In a possible implementation, the first signal and the second signal may be sent by the main control component 106 in the display device 10.

[0090] Figure 4 FIG. is a schematic structural diagram of another display device provided by an embodiment of the present application. As Figure 4 shown, the display device 10 further includes a main control component 106. The main control component 106 is respectively connected to the backlight driving component 32 and the preset switch 31. The main control component 106 is configured to:

[0091] Send a second signal to the backlight driving component 32.

[0092] Send a first signal to the preset switch 31.

[0093] Wherein, the first signal is used to indicate the target light-emitting component for which the preset switch 31 is turned on, and the second signal is used to indicate whether the backlight driving component 32 outputs a working voltage to the target light-emitting component, so that the target light-emitting component is lit.

[0094] Exemplarily, the main control component 106 may be a Central Processing Unit (CPU), and the display of the first display screen 104 and the second display screen 105 can be controlled through the CPU.

[0095] In a possible implementation, when controlling whether the backlight driving component 32 outputs a working voltage to the target light-emitting component through the second signal, the output of the backlight driving component 32 can be controlled by the high and low levels of the second signal. Exemplarily, when the second signal is at a high level, the backlight driving component 32 outputs a voltage, and when the first signal is at a low level, the backlight driving component 32 does not output a voltage.

[0096] Specifically, when determining the second signal, the main control component 106 can be determined by the following method:

[0097] Obtain the refresh rate of the display screen, the display period, the first backlight brightness per unit time within the preset lighting period, and the second backlight brightness required within the display period. The display period is the duration for the display screen to refresh one frame of image, that is, the total duration of one high-level duration and one low-level duration of the second signal, and the preset lighting period is the high-level duration within one display period. Among them, the second backlight brightness is the average brightness of the display screen within the display period. The display screen can be the first display screen 104 or the second display screen 105. The refresh rate, display period, first backlight brightness, and second backlight brightness of the two display screens are the same. The display period is the duration for the display screen to refresh one frame of image, and the unit time can be, for example, 1 second.

[0098] Then, the main control component 106 can determine the high-level duration of the second signal according to the refresh rate, display period, first backlight brightness, and second backlight brightness. The high-level duration is used to determine the preset lighting period. Figure 5 Schematic diagrams of the second signal and the first signal in the examples of this application are shown in Figure 5 As shown, the preset lighting period can be each high-level duration.

[0099] Exemplarily, the main control component 106 can determine the high-level duration of the second signal according to the following formula:

[0100]

[0101] where T is the high-level duration, X is the refresh rate, a is the first backlight brightness, and b is the second backlight brightness.

[0102] When determining the first signal, the main control component 106 can be determined by the following method:

[0103] According to the lighting duration and the preset lighting period, determine the number of alternating lighting times within the preset lighting period. The lighting duration is the duration of one lighting of the first display screen 104 or the second display screen 105. The duration of one lighting of the first display screen 104 and the second display screen 105 is the same. According to the number of alternating lighting times, determine the high-level duration and low-level duration of the first signal within the preset lighting period. Exemplarily, the preset lighting period divided by the lighting duration can obtain the number of alternating lighting times.

[0104] As Figure 5 shown, an alternation of one high level and one low level can be considered as one alternating lighting.

[0105] Among them, alternating lighting means that when one of them is lit, the other is extinguished, and they cannot be lit simultaneously. For example, when the first light-emitting component 101 is lit, the second light-emitting component 102 is extinguished, and when the second light-emitting component 102 is lit, the first light-emitting component 101 is extinguished. Similarly, in the embodiments of this application, the preset switch 31 alternately connecting the first light-emitting component 101 and the second light-emitting component 102 means that when one of them is connected, the other is disconnected, and they cannot be connected simultaneously. For example, when the first light-emitting component 101 is connected, the second light-emitting component 102 is disconnected, or when the second light-emitting component 102 is connected, the first light-emitting component 101 is disconnected.

[0106] In a possible implementation manner, the high-level duration and low-level duration of the first signal are the same. That is to say, the high-level duty cycle of the first signal is 50%, which can make the screen-on durations of the first display screen 104 and the second display screen 105 the same within the preset lighting period, so as to ensure the same brightness of the first display screen 104 and the second display screen 105.

[0107] Exemplarily, the second signal may be a LOW-Frequency Pulse Width Modulation (PWML) signal, and the first signal may be a HIGH-Frequency Pulse Width Modulation (PWMH) signal.

[0108] Figure 6 FIG. is a schematic diagram of the PWML signal of the embodiment of the present application and a conventional PWML signal. As Figure 6 shown, the high-level duration of the PWML signal of the present application is greater than the high-level duration of the conventional PWML signal. For example, the high-level duration of the PWML signal of the present application is 2 times the high-level duration of the conventional PWML signal. In this way, it can be ensured that the cumulative high-level duration of the second signal of each light-emitting component within a preset lighting period is the same as the cumulative high-level duration of the conventional PWML signal, and it can be ensured that the brightness of the display screen of the present application remains unchanged compared with the brightness of the display screen before extending the high-level duration of the PWML signal. That is to say, by extending the high-level duration of the PWML signal, the brightness reduction of the display screen can be avoided.

[0109] In a possible implementation manner, when the second signal is high level and the first signal is high level, the first light-emitting component 101 is lit. When the second signal is high level and the first signal is low level, the second light-emitting component 102 can be lit. When the second signal is low level, the first light-emitting component 101 and the second light-emitting component 102 are turned off.

[0110] Figure 7 FIG. is a schematic structural diagram of another display device provided by the embodiment of the present application. As Figure 7 shown, the first light-emitting component 101 and the second light-emitting component 102 are connected to the backlight driving component 32 through a first connection line. The backlight driving circuit 103 further includes a first resistor. The first end of the first resistor is connected to the first connection line, and the second end of the first resistor is grounded. In Figure 7 FIG., 1 of the first resistor represents the first end, and 2 of the first resistor represents the second end.

[0111] By adding a first resistor between the light-emitting component and the backlight driving component 32, the current value passing through the light-emitting component can be set.

[0112] Figure 8 FIG. is a schematic structural diagram of yet another display device provided by the embodiment of the present application. As Figure 8 shown, the backlight driving circuit 103 further includes a power supply battery 33 and a first capacitor. The power supply battery 33 is connected to the power supply interface of the backlight driving component 32 through a second connection line. The first end of the first capacitor is connected to the second connection line, and the second end of the first capacitor is grounded. InFigure 8 In Figure 8 , 1 of the first capacitor represents the first terminal, and 2 of the first capacitor represents the second terminal.

[0113] Among them, the power supply battery 33 is configured to provide a driving voltage for the backlight driving circuit 103.

[0114] Figure 8 In Figure 8 , SW is the pin of the switching chip, VIN is the power supply pin, FB is the feedback pin, and GND is the ground pin. It can be understood that for the circuit structure not described in Figure 8 , it is the required structure of the circuit, and reference can be made to Figure 8 which will not be elaborated here. Figure 8

[0115] In this embodiment, the backlight driving circuit 103 is powered by the power supply battery 33, and a capacitor is connected to the power supply interface of the backlight driving component 32, which can reduce power supply noise and provide a stable power supply to the backlight driving component 32, and can avoid the influence on the backlight driving component 32 caused by the instantaneous voltage change during the power supply process.

[0116] Based on the above display device 10, Figure 9 FIG. [not provided in the original] is a schematic flow chart of a control method for a display device provided in an embodiment of the present application, which can be executed by the backlight driving circuit 103. As Figure 9 shown, the method includes the following steps:

[0117] S901: Through a preset switch, within a preset lighting period, according to a first signal, alternately connect the first light-emitting component and the second light-emitting component multiple times, so that the first light-emitting component and the second light-emitting component are alternately lit within the preset lighting period.

[0118] S902: Through the backlight driving component, output a working voltage to the target light-emitting component through the preset switch within the preset lighting period, so that the target light-emitting component is lit when it is turned on.

[0119] The target light-emitting component is the first light-emitting component or the second light-emitting component.

[0120] For the specific implementation of each of the above steps, reference can be made to the above embodiments, which will not be elaborated here.

[0121] In this embodiment, during a preset lighting period, the preset switch alternately connects the first light-emitting component and the second light-emitting component multiple times according to the first signal, so that the first light-emitting component and the second light-emitting component are alternately lit during the preset lighting period; according to the second signal, the backlight driving component outputs a working voltage to the target light-emitting component through the preset switch during the preset lighting period, so that the target light-emitting component is lit when it is turned on, and the target light-emitting component is the first light-emitting component or the second light-emitting component. In this application, by controlling the two screens to be quickly and alternately lit within one lighting period, the instantaneous current of the backlight driving circuit is reduced, thereby reducing the transient impact of the battery voltage, and the normal operation of the backlight driving chip can be maintained.

[0122] In a possible implementation manner, if the display device 10 is a VR device, Figure 10 is a schematic structural diagram of another display device provided by an embodiment of this application. As Figure 10 shown, the display device 10 includes a first light-emitting component 101, a second light-emitting component 102, a first display screen 104, a second display screen 105, a preset switch 31, a backlight driving component 32, and a main control component 106.

[0123] Among them, the main control component 106 is connected to the first display screen 104 and the second display screen 105 through a Display Serial Interface (DSI). The first display screen 104 and the second display screen 105 are connected to the backlight driving component 32. Exemplarily, the first display screen 104 and the second display screen 105 can be Liquid Crystal Display (LCD) screens.

[0124] The main control component 106 is also connected to the backlight driving component 32 through a PWML interface.

[0125] The backlight driving component 32 can also be connected to a power supply through a power interface (Power) to supply power to the backlight driving component 32, connected to a camera through a Camera Serial Interface (CSI), connected to an audio peripheral through a Sound Wire (SWR) interface, connected to a Universal Flash Storage (UFS) through a UFS interface, connected to a Low Power Double Data Rate SDRAM (LPDDR5) through an External Bus Interface (EBI), connected to a sensor through a Serial Peripheral Interface (SPI), and connected to a communication module through a Peripheral Component Interconnect Express (PCIE) interface, a Universal Asynchronous Receiver / Transmitter (UART) interface, and a Serial Low-power Inter-chip Media bus (SLIMBUS) interface. The communication module is, for example, Bluetooth or Wireless Fidelity (WIFI).

[0126] The present application also provides a computer-readable storage medium, which may include: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disc. Specifically, the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a computer, they are used to implement the technical solutions shown in the above method embodiments.

[0127] The present application also provides a program product, which includes executable instructions stored in a readable storage medium. When the computer program is executed by a computer, the technical solutions shown in the above method embodiments are executed. The specific implementation manners and technical effects are similar and will not be elaborated here.

[0128] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0129] For ease of explanation, the above description has been made in connection with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed. According to the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

[0130] In the embodiments of the present application, the descriptions such as first and second are only used for indicating and distinguishing the described objects, without order, and do not represent a special limitation on the number of devices in the embodiments of the present application, and cannot constitute any limitation on the embodiments of the present application. For example, the first threshold and the second threshold are only used to distinguish different thresholds, rather than indicating differences in the magnitude, priority or importance of these two thresholds.

[0131] In the present application, "exemplary", "in some embodiments", "in other embodiments", etc. are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" in the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of the term "exemplary" is intended to present concepts in a specific manner.

[0132] In the present application, "(of)", "corresponding", "corresponding", "associated" can sometimes be used interchangeably. It should be noted that when their differences are not emphasized, the meanings they express are the same. In the embodiments of the present application, communication and transmission can sometimes be used interchangeably. It should be noted that when their differences are not emphasized, the meanings they express are the same. For example, transmission can include sending and / or receiving, and can be a noun or a verb.

[0133] In the present application, "equal to" can be used in combination with "less than" or "greater than", but not with "less than" and "greater than" at the same time. When "equal to" is used in combination with "less than", the technical solution adopted by "less than" is applicable. When "equal to" is used in combination with "greater than", the technical solution adopted by "greater than" is applicable.

Claims

1. A display device, characterized in that: The display device comprises: A display screen configured to display an image; the display screen comprises a first display screen and a second display screen; A first light-emitting component, disposed on the back of the first display screen, and configured as a light source for providing backlight for the first display screen when lit; A second light-emitting component, disposed on the back of the second display screen, and configured as a light source for providing backlight for the second display screen when lit; Backlight driving circuit, including: a preset switch, connected to the first light-emitting component and the second light-emitting component respectively, and configured to alternately turn on the first light-emitting component and the second light-emitting component multiple times within a preset lighting cycle according to a first signal, so that the first light-emitting component and the second light-emitting component are alternately lit within the preset lighting cycle; A backlight driving component is connected to the preset switch and is configured to output an operating voltage to a target light-emitting component through the preset switch within the preset lighting cycle according to a second signal, so that the target light-emitting component is lit when it is turned on. The target light-emitting component is the first light-emitting component or the second light-emitting component.

2. The display device according to claim 1, characterized in that The display device further includes a main control component; the main control component is connected to the backlight driving component and the preset switch respectively, and the main control component is configured as follows: sending the second signal to the backlight driving component; The first signal is sent to the preset switch.

3. The display device according to claim 2, characterized in that The main control component is configured as follows: Obtaining a refresh rate of the display screen, a display cycle, a first backlight brightness per unit time in the preset lighting cycle, and a second backlight brightness required in the display cycle, wherein the display cycle is the duration of refreshing a frame of an image on the display screen; The high level duration of the second signal is determined according to the refresh rate, the display cycle, the first backlight brightness, and the second backlight brightness, and the high level duration is used to determine the preset lighting cycle.

4. The display device according to claim 2 or 3, characterized in that: The main control component is configured as follows: According to the lighting duration and the preset lighting cycle, determining the number of alternating lighting times within the preset lighting cycle, wherein the lighting duration is the duration of lighting the first display screen and the second display screen once; According to the number of alternating lighting times, a high level duration and a low level duration of the first signal in the preset lighting cycle are determined.

5. The display device according to claim 4, characterized in that The high level duration of the first signal is the same as the low level duration.

6. The display device according to claim 4 or 5, characterized in that: The backlight driving component is configured as follows: When the second signal is at a high level and the first signal is at a high level, lighting up the first light-emitting component; When the second signal is at a high level and the first signal is at a low level, lighting up the second light-emitting component; When the second signal is at a low level, the first light-emitting component and the second light-emitting component are turned off.

7. The display device according to claim 1, characterized in that The first light-emitting component and the second light-emitting component are connected to the backlight driving component via a first connecting line; The backlight driving circuit further includes: a first resistor, a first end of the first resistor is connected to the first connecting line, and a second end of the first resistor is grounded.

8. The display device according to claim 1, characterized in that The backlight driving circuit further includes a power supply battery and a first capacitor, wherein the power supply battery is connected to the power supply interface of the backlight driving component via a second connecting line, a first end of the first capacitor is connected to the second connecting line, and a second end of the first capacitor is grounded; The power supply battery is configured to provide a driving voltage for the backlight driving circuit.

9. A display device, characterized in that: The display device comprises: A display screen configured to display an image; the display screen comprises a first display screen and a second display screen; A first light-emitting component, disposed on the back of the first display screen, and configured as a light source for providing backlight for the first display screen when lit; A second light-emitting component, disposed on the back of the second display screen, and configured as a light source for providing backlight for the second display screen when lit; A backlight driving circuit connected to the first light-emitting component and the second light-emitting component, wherein the backlight driving circuit is configured as follows: Within a preset lighting cycle, the first light-emitting component and the second light-emitting component are alternately turned on multiple times, and when the target light-emitting component is turned on, an operating voltage is output to the target light-emitting component so that the target light-emitting component is lit when it is turned on. The target light-emitting component is the first light-emitting component or the second light-emitting component.

10. A method for controlling a display device, characterized in that: The display device comprises: A display screen configured to display an image; the display screen comprises a first display screen and a second display screen; A first light-emitting component, disposed on the back of the first display screen, and configured as a light source for providing backlight for the first display screen when lit; A second light-emitting component, disposed on the back of the second display screen, and configured as a light source for providing backlight for the second display screen when lit; A backlight driving circuit, including a preset switch and a backlight driving component; The method comprises: By means of the preset switch, the first light-emitting component and the second light-emitting component are alternately turned on multiple times according to a first signal within a preset lighting cycle, so that the first light-emitting component and the second light-emitting component are alternately lit within the preset lighting cycle; Through the backlight driving component, the operating voltage is output to the target light-emitting component through the preset switch within the preset lighting cycle, so that the target light-emitting component is lit when it is turned on. The target light-emitting component is the first light-emitting component or the second light-emitting component.

Images