Driving current control method and device, computer equipment and storage medium

Abstract

The invention relates to a driving current control method and device, computer equipment, a storage medium and a computer program product. The method comprises the following steps: detecting accumulative operation duration and accumulative activation duration of a light emitting diode in the display equipment; according to the accumulative operation duration and the accumulative activation duration, at least one current adjusting moment and at least one current adjusting variable are determined, and the at least one current adjusting moment and the at least one current adjusting variable are in one-to-one correspondence; and adjusting the driving current of the light emitting diode according to the corresponding current adjusting quantity at the at least one current adjusting moment. By adopting the method, the dead lamp probability of the light-emitting diode after the packaging silica gel resin is cracked can be reduced, and the service life of the backlight of the whole machine is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a driving current control method, device, computer equipment, storage medium and computer program product. Background Art

[0002] Currently, the backlighting of display devices is primarily based on light-emitting diodes (LEDs). Common display devices include interactive intelligent panels (IIPs), monitors, and e-readers. The lifespan of the LED determines the lifespan of the display device's backlight. LEDs are composed of multiple materials, with the core material being encapsulating silicone resin. Encapsulating silicone resin is a high-molecular silicone material. Under long-term exposure to high temperatures, light radiation, and oxygen, its performance gradually deteriorates. The resin becomes hard, brittle, and yellow, and its light transmittance gradually decreases, eventually leading to cracking of the LED resin. In traditional display devices, the driving current of LEDs is constant. Therefore, cracking of the LED resin prevents the LED from emitting light properly, shortening the lifespan of the LED and, consequently, the overall backlight. Summary of the Invention

[0003] Based on this, it is necessary to provide a driving current control method, device, computer equipment, computer readable storage medium and computer program product to address the above technical problems, which can improve the service life of the backlight of the entire device.

[0004] In a first aspect, the present application provides a driving current control method, comprising:

[0005] Detecting the cumulative operating time and cumulative activation time of the light emitting diodes in the display device;

[0006] Determining at least one current adjustment moment and at least one current adjustment amount according to the accumulated operating time and the accumulated activation time, wherein the at least one current adjustment moment and the at least one current adjustment amount have a one-to-one correspondence;

[0007] At at least one current adjustment moment, the driving current of the light emitting diode is adjusted according to the corresponding current adjustment amount.

[0008] In one embodiment, determining at least one current adjustment time and at least one current adjustment amount based on the accumulated operating time and the accumulated activation time includes:

[0009] Determine the usage category of the light emitting diode according to the accumulated operating time and the accumulated activation time; the usage category is used to represent the category to which the usage category of the light emitting diode belongs;

[0010] At least one current adjustment time and at least one current adjustment amount are determined according to the usage level category and the accumulated activation time.

[0011] In one embodiment, determining the usage category of the light emitting diode based on the accumulated operating time and the accumulated activation time includes:

[0012] Determine the ratio of the accumulated running time to the accumulated activation time;

[0013] When the ratio is greater than or equal to a first preset value, determining that the usage level of the light emitting diode is a heavy category;

[0014] When the ratio is greater than the second preset value and less than the first preset value, determining that the usage level category of the light emitting diode is a moderate category;

[0015] When the ratio is less than or equal to the second preset value, the usage level of the light emitting diode is determined to be a light level.

[0016] In one embodiment, determining at least one current adjustment time and at least one current adjustment amount based on the usage level category and the accumulated activation time includes:

[0017] Determine the duration range to which the accumulated activation duration belongs;

[0018] Determine the regulation cycle and current regulation coefficient based on the usage category and duration range;

[0019] At least one current adjustment time and at least one current adjustment amount are determined according to the adjustment period and the current adjustment coefficient.

[0020] In one embodiment, determining at least one current adjustment moment and at least one current adjustment amount according to the adjustment period and the current adjustment coefficient includes:

[0021] Get the current driving current;

[0022] Determining at least one current adjustment moment according to the current moment and the adjustment period;

[0023] At least one current adjustment amount corresponding to at least one current adjustment moment is obtained according to the current driving current and the current adjustment coefficient.

[0024] In one embodiment, the driving current control method further includes:

[0025] Obtaining a preset first functional relationship, where the first functional relationship is used to characterize a corresponding relationship among a light-emitting diode life variable, a driving current variable, and an operating time variable;

[0026] The adjusted driving current is substituted into the driving current variable in the first functional relationship, and the accumulated operating time is substituted into the operating time variable in the first functional relationship to obtain the life of the light emitting diode.

[0027] In a second aspect, the present application further provides a driving current control device, comprising:

[0028] A detection module, used to detect the cumulative operating time and cumulative activation time of the light-emitting diodes in the display device;

[0029] a determination module, configured to determine at least one current adjustment moment and at least one current adjustment amount according to the accumulated operating time and the accumulated activation time, wherein the at least one current adjustment moment and the at least one current adjustment amount have a one-to-one correspondence;

[0030] The regulating module is used to regulate the driving current of the light emitting diode according to the corresponding current regulation amount at at least one current regulation moment.

[0031] In a third aspect, the present application further provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0032] Detecting the cumulative operating time and cumulative activation time of the light emitting diodes in the display device;

[0033] Determining at least one current adjustment moment and at least one current adjustment amount according to the accumulated operating time and the accumulated activation time, wherein the at least one current adjustment moment and the at least one current adjustment amount have a one-to-one correspondence;

[0034] At at least one current adjustment moment, the driving current of the light emitting diode is adjusted according to the corresponding current adjustment amount.

[0035] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the following steps are implemented:

[0036] Detecting the cumulative operating time and cumulative activation time of the light emitting diodes in the display device;

[0037] Determining at least one current adjustment moment and at least one current adjustment amount according to the accumulated operating time and the accumulated activation time, wherein the at least one current adjustment moment and the at least one current adjustment amount have a one-to-one correspondence;

[0038] At at least one current adjustment moment, the driving current of the light emitting diode is adjusted according to the corresponding current adjustment amount.

[0039] In a fifth aspect, the present application further provides a computer program product, comprising a computer program, which, when executed by a processor, implements the following steps:

[0040] Detecting the cumulative operating time and cumulative activation time of the light emitting diodes in the display device;

[0041] Determining at least one current adjustment moment and at least one current adjustment amount according to the accumulated operating time and the accumulated activation time, wherein the at least one current adjustment moment and the at least one current adjustment amount have a one-to-one correspondence;

[0042] At at least one current adjustment moment, the driving current of the light emitting diode is adjusted according to the corresponding current adjustment amount.

[0043] The above-mentioned driving current control method, device, computer equipment, storage medium and computer program product dynamically adjust the driving current of the light-emitting diode by obtaining the cumulative operating time and cumulative activation time of the light-emitting diode in the display device, taking into account the usage of the light-emitting diode, and adjusting the corresponding current adjustment amount of the driving current of the light-emitting diode at different current adjustment moments, thereby reducing the probability of the light-emitting diode dying after the encapsulating silicone resin cracks, which is beneficial to improving the service life of the backlight of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0045] Figure 1 A diagram showing an application environment of a driving current control method according to an embodiment;

[0046] Figure 2 1 is a flow chart of a driving current control method according to an embodiment;

[0047] Figure 3 is a graph showing a functional relationship between the life of a light-emitting diode and the junction temperature of the chip in one embodiment;

[0048] Figure 4 is a graph showing a functional relationship between driving current and operating time in one embodiment;

[0049] Figure 5 is a structural block diagram of a driving current control device in one embodiment;

[0050] Figure 6 FIG. 1 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0052] Currently, the backlights of display devices are primarily based on light-emitting diodes (LEDs). The lifespan of the LED lamp determines the lifespan of the entire backlight. LED lamps are composed of multiple materials, with core materials including the bracket, chip, gold wire, encapsulating silicone resin, and phosphor. Encapsulating silicone resin is a high-molecular silicone material. During the light-emitting process of the LED, its performance gradually deteriorates under long-term high temperature, light radiation, and oxygen-containing environments. The colloid gradually hardens, becomes brittle, and turns yellow, and its light transmittance gradually decreases, eventually leading to colloid cracking. Water and oxygen in the air enter the LED bracket or chip surface, causing the bracket metal to oxidize, increasing thermal resistance, and deteriorating the chip's antistatic ability and reliability. The thermal resistance of the LED is even greater, the LED generates more heat, and the colloid cracks more severely, eventually breaking the gold wire and causing the LED to fail.

[0053] In traditional display devices, the driving current of the light-emitting diode is constant. Therefore, after the light-emitting diode cracks, the light-emitting diode will not emit light normally, reducing the service life of the light-emitting diode and thus reducing the service life of the entire backlight.

[0054] In order to improve the service life of the backlight of the entire device, an embodiment of the present application proposes a driving current control method. By obtaining the cumulative operating time and cumulative activation time of the light-emitting diode in the display device, the driving current of the light-emitting diode is dynamically adjusted. The usage of the light-emitting diode is taken into consideration, and the corresponding current adjustment amount is adjusted for the driving current of the light-emitting diode at different current adjustment moments. This reduces the probability of the light-emitting diode dying after the encapsulating silicone resin is cracked, which is beneficial to improving the service life of the backlight of the display device.

[0055] In one embodiment, the driving current control method provided by the embodiment of the present application can be applied to Figure 1In the application environment shown, the display device 102 includes a controller 104 and a light-emitting diode 106. The driving current control method of the embodiment of the present application can be executed by the controller 104. The controller 104 detects the cumulative operating time and cumulative activation time of the light-emitting diode 106 in the display device 102; determines at least one current adjustment time and at least one current adjustment amount based on the cumulative operating time and cumulative activation time, wherein the at least one current adjustment time and the at least one current adjustment amount correspond one to one; and adjusts the driving current of the light-emitting diode 106 according to the corresponding current adjustment amount at each of the at least one current adjustment times. Optionally, the display device 102 can be a terminal device. Terminal devices can include, but are not limited to, various interactive intelligent panels (IIPs), personal computers, laptops, smartphones, tablets, Internet of Things devices, and portable wearable devices. The Internet of Things devices can include smart speakers, smart TVs, smart air conditioners, smart car devices, etc. Portable wearable devices can include smart watches, smart bracelets, head-mounted devices, etc. The display device 102 can also be a server. The server can be implemented as a standalone server or a server cluster consisting of multiple servers.

[0056] In an exemplary embodiment, Figure 2 As shown, a driving current control method is provided, which is applied to Figure 1 The controller 104 in FIG. 1 is taken as an example to illustrate the process, which includes the following steps 202 to 206. In which:

[0057] Step 202: Detect the cumulative operating time and cumulative activation time of the light emitting diodes in the display device.

[0058] In the embodiment of the present application, the backlight of the display device is illustrated by taking a light emitting diode as the light source.

[0059] The cumulative running time is the cumulative duration that the light-emitting diode is in the running state from the first time the display device is turned on to the current detection moment. In some embodiments, the light-emitting diode lights up after the display device is turned on and goes out after the display device is turned off, and the display device is in the running state during the power-on and power-off periods. The duration that the display device is in the running state after each power-on is the duration that the light-emitting diode is in the running state after the power-on. The controller sums the duration that the light-emitting diode is in the running state from the first time the display device is turned on to the current detection moment to obtain the cumulative duration that the light-emitting diode is in the running state.

[0060] The cumulative activation duration is the cumulative duration of the display device from the start of whole-machine activation to the current detection moment. In some embodiments, the display device will perform device activation after the first power-on. Device activation is mainly a method of setting the display device to a usable state, for example, including connecting to the Internet, installing necessary software, or performing necessary security settings. The controller can use the first power-on moment as the start moment of whole-machine activation. Therefore, in the process of controlling the driving current, the controller needs to detect the cumulative operating time and cumulative activation time of the light-emitting diodes in the display device.

[0061] Since the cumulative operating time and cumulative activation time of the light-emitting diodes increase with the use of the display device, the detection frequency of the cumulative operating time and cumulative activation time can be real-time detection, or detection can be performed once every preset time interval. The preset time interval can be set according to actual needs.

[0062] Step 204 : determining at least one current adjustment moment and at least one current adjustment amount according to the accumulated operating time and the accumulated activation time, wherein the at least one current adjustment moment and the at least one current adjustment amount have a one-to-one correspondence.

[0063] The current adjustment time is the time when the drive current is adjusted. The current adjustment time is determined according to the accumulated operating time and the accumulated activation time. The drive current adjustment can be performed at only one current adjustment time or at multiple current adjustment times.

[0064] The current regulation amount is the regulation amount of the driving current. For example, the current regulation amount is 0.5A and the driving current is 3A. The driving current is regulated by the current regulation amount. The difference between the driving current and the current regulation amount can be used to obtain the regulated driving current of 2.5A.

[0065] Each current regulation moment corresponds to a current regulation amount.

[0066] For different display devices, the cumulative operating time and cumulative activation time of the LEDs can reflect the device's usage level. For example, given the same cumulative activation time, a longer cumulative operating time indicates a more heavily used display device. Furthermore, for more heavily used display devices, the LEDs experience more severe light decay, a higher probability of cracking and LED failure, and a shorter lifespan. Therefore, determining at least one current adjustment moment and at least one current adjustment amount based on the cumulative operating time and cumulative activation time facilitates dynamic adjustment of the drive current based on the LED's operating status, thereby reducing the probability of cracking and LED failure and extending the LED's lifespan.

[0067] Step 206 : at at least one current adjustment moment, adjust the driving current of the light emitting diode according to the corresponding current adjustment amount.

[0068] At each current adjustment moment, the corresponding current adjustment amount is used to adjust the LED drive current, achieving dynamic adjustment of the LED drive current. This prevents LED failure caused by constant drive current after gel cracking. This dynamic adjustment of the LED drive current, using different adjustment strategies for LEDs with different cumulative operating time and cumulative activation time, helps to extend the life of the LED and, in turn, the life of the display device backlight.

[0069] In an exemplary embodiment, at least one current adjustment moment and at least one current adjustment amount are determined based on the accumulated operating time and the accumulated activation time, including: determining the usage level category of the light-emitting diode based on the accumulated operating time and the accumulated activation time; the usage level category is used to characterize the category to which the usage level of the light-emitting diode belongs; and determining at least one current adjustment moment and at least one current adjustment amount based on the usage level category and the accumulated activation time.

[0070] The usage level category is used to indicate the usage level of the LEDs. For example, the usage level categories include heavy, medium, and light. Heavy-class LEDs have a higher usage level than medium-class LEDs, and medium-class LEDs have a higher usage level than light-class LEDs.

[0071] Given the same cumulative activation duration, a longer cumulative operating time indicates a higher level of usage. Given the same cumulative operating time, a shorter cumulative activation time indicates a higher level of usage. Therefore, the cumulative operating time and cumulative activation time of an LED can reflect the level of usage of the LED. Using these cumulative operating time and cumulative activation time, the LED usage level can be classified into usage categories.

[0072] Different current adjustment times and current adjustment amounts can be determined for different usage levels and cumulative activation times. For example, for a light-emitting diode in a heavy usage category with a cumulative activation time of one year, the corresponding current adjustment time and current adjustment amount can be determined.

[0073] In this embodiment, the usage categories of the light-emitting diodes are divided by the cumulative operating time and the cumulative activation time. Since the light-emitting diodes with different usage categories and cumulative activation times have different light decay conditions, different current regulation strategies are adopted for the light-emitting diodes with different usage categories and cumulative activation times. The driving current of the light-emitting diodes with serious light decay is adjusted in a timely and proactive manner, which is beneficial to extending the service life of the light-emitting diodes.

[0074] In an exemplary embodiment, the usage category of the LED is determined based on the cumulative operating time and the cumulative activation time, including: determining the ratio of the cumulative operating time to the cumulative activation time; when the ratio is greater than or equal to a first preset value, determining the usage category of the LED to be a heavy category; when the ratio is greater than a second preset value and less than the first preset value, determining the usage category of the LED to be a moderate category; when the ratio is less than or equal to the second preset value, determining the usage category of the LED to be a light category.

[0075] The accumulated operating time and the accumulated activation time are divided to obtain a ratio of the accumulated operating time to the accumulated activation time. A larger ratio indicates a longer operating time of the light emitting diode.

[0076] For example, T0 represents the cumulative activation time, and T1 represents the cumulative operating time. If T1 / T0 = 1, the LEDs remain on continuously after the display device is activated. If T1 / T0 = 0.5, the LEDs remain on for half of the time after the device is activated. If T1 / T0 = 0.33, the LEDs remain on for one-third of the time after the device is activated.

[0077] The severe category indicates that the LEDs are used at a high level and remain in operation for a long period of time. The moderate category indicates that the LEDs are in operation for a medium duration of time. The mild category indicates that the LEDs are used at a low level and remain in operation for a short period of time.

[0078] In this embodiment, the ratio of the accumulated operating time to the accumulated activation time is compared with a preset value, which is conducive to obtaining a more accurate usage level category of the light emitting diode.

[0079] In an exemplary embodiment, at least one current adjustment moment and at least one current adjustment amount are determined based on the usage level category and the cumulative activation time, including: determining the duration range to which the cumulative activation time belongs; determining the adjustment cycle and the current adjustment coefficient based on the usage level category and the duration range; determining at least one current adjustment moment and at least one current adjustment amount based on the adjustment cycle and the current adjustment coefficient.

[0080] The controller presets multiple duration ranges, and compares the accumulated activation duration with the boundary values ​​in each of these ranges to determine the duration range to which the accumulated activation duration belongs. For example, the multiple duration ranges include: greater than 0.5 years and less than or equal to 1 year, greater than 1 year and less than or equal to 2 years, etc. If the accumulated activation duration is 0.7 years, then the duration range to which the accumulated activation duration belongs is greater than 0.5 years and less than or equal to 1 year.

[0081] The regulation period is the time interval between each drive current adjustment and is used to determine the current adjustment time. The current regulation coefficient is the adjustment factor of the drive current and is used to determine the current adjustment amount. For example, if the current regulation coefficient is 0.05 and the drive current is 10A, the current adjustment amount is 0.5A.

[0082] As the display device is repeatedly used, the light decay of the light-emitting diode will become more serious. Different driving current adjustment strategies need to be adopted for display devices with different usage categories and cumulative activation times. Therefore, display devices with different usage categories and cumulative activation times can adopt corresponding adjustment cycles and current adjustment coefficients. In some embodiments, the controller pre-stores a mapping relationship between usage categories, duration ranges, and adjustment cycles, and the mapping relationship is queried to obtain the corresponding adjustment cycle. The controller also pre-stores a mapping relationship between usage categories, duration ranges, and current adjustment coefficients, and the mapping relationship is queried to obtain the corresponding current adjustment coefficient. Table 1 shows a mapping table of usage categories, duration ranges, adjustment cycles, and current adjustment coefficients.

[0083] Table 1 Mapping table of usage level category, duration range, adjustment cycle and current adjustment coefficient

[0084]

[0085] For LEDs with severe light decay, the light decay is more severe, so active adjustment of the drive current can be adopted as early as possible to extend the service life of the LED. For LEDs with moderate and mild light decay, the light decay is relatively mild, so active intervention of drive current adjustment can be avoided too early.

[0086] In some embodiments, when the duration range to which the cumulative activation duration belongs remains unchanged, the current adjustment amount corresponding to the light-emitting diode of the severe category should be higher than the current adjustment amount of the light-emitting diode of the mild category and the moderate category, which is beneficial to slow down the light decay of the light-emitting diode and thus prolong the life of the light-emitting diode. For example, for a display device of the severe category, the current adjustment amount is 0.06A, for a display device of the moderate category, the current adjustment amount is 0.04A, and for a display device of the mild category, the current adjustment amount is 0.02A. The controller determines at least one current adjustment moment according to the adjustment cycle, and determines the current adjustment amount corresponding to the at least one current adjustment moment according to the current adjustment coefficient. The at least one current adjustment moment and the current adjustment amount are used to control the driving current.

[0087] In this embodiment, for display devices of different usage categories and cumulative activation times, corresponding adjustment cycles, current adjustment times, and current adjustment amounts are used, which is conducive to dynamic adjustment of the driving current and improves the life of the display device backlight.

[0088] In one embodiment, at least one current adjustment moment and at least one current adjustment amount are determined based on the adjustment cycle and the current adjustment coefficient, including: obtaining the current driving current; determining at least one current adjustment moment based on the current moment and the adjustment cycle; and obtaining at least one current adjustment amount corresponding to the at least one current adjustment moment based on the current driving current and the current adjustment coefficient.

[0089] Since the interval between two adjacent current adjustment moments is the adjustment period, for example, the adjustment period can be added to the current moment to obtain the first current adjustment moment, and the adjustment period can be added to the first current adjustment moment to obtain the second current adjustment moment. This process can be repeated in this way to obtain at least one current adjustment moment.

[0090] For another example, the current moment can be used as the first current adjustment moment, the current moment plus the adjustment period can be used to obtain the second current adjustment moment, the second current adjustment moment plus the adjustment period can be used to obtain the third current adjustment moment, and so on, to obtain at least one current adjustment moment.

[0091] The current driving current is the driving current at the current moment. In some embodiments, the current driving current can be multiplied by the current adjustment coefficient, and the result obtained is used as the current adjustment amount corresponding to the first current adjustment moment. The difference between the current driving current and the current adjustment amount corresponding to the first current adjustment moment is used as the driving current corresponding to the second current adjustment moment. The driving current corresponding to the second current adjustment moment is multiplied by the current adjustment coefficient, and the result obtained is used as the current adjustment amount corresponding to the second current adjustment moment. This process is repeated in this way to obtain a current adjustment amount corresponding to at least one current adjustment moment.

[0092] For example, if the current time is January 1, 2024, the current drive current is 5 A, the corresponding adjustment period for the moderate category is 1 year, and the current adjustment coefficient is 0.1, then the drive current is adjusted by 0.5 A at the current time, and the adjusted drive current is 4.5 A. On January 1, 2025, the drive current is adjusted by 0.45 A, and the adjusted drive current is 4.05 A.

[0093] In this embodiment, at least one current adjustment moment is determined based on the current moment and the adjustment period, and then at least one current adjustment amount corresponding to at least one current adjustment moment is obtained based on the current driving current and the current adjustment coefficient. This is conducive to dynamically adjusting the driving current using different current adjustment amounts at different current adjustment moments, alleviating the light decay of the light-emitting diode and extending the life of the light-emitting diode.

[0094] In one embodiment, the driving current control method further includes: obtaining a preset first functional relationship, the first functional relationship being used to characterize the correspondence between the light-emitting diode life variable, the driving current variable and the operating time variable; substituting the adjusted driving current into the driving current variable in the first functional relationship, and substituting the accumulated operating time into the operating time variable in the first functional relationship to obtain the light-emitting diode life.

[0095] The first functional relationship is pre-stored in the controller and is determined through experiments before the display device is operated.

[0096] After adjusting the drive current according to the drive current control method, an adjusted drive current is obtained. Based on the adjusted drive current and the first functional relationship, the lifespan of the LED can be estimated. The lifespan of the LED is determined by the drive current and the operating time. The adjusted drive current is assigned to the drive current variable of the first functional relationship, and the accumulated operating time is assigned to the operating time variable of the first functional relationship. The result obtained is the lifespan of the LED.

[0097] In some embodiments, the display device includes a display interface, and the calculated life of the light-emitting diode can be displayed in the display interface to prompt relevant personnel to promptly understand the life of the light-emitting diode.

[0098] In some embodiments, when the life of an LED is less than a preset life value, a corresponding warning message may be generated. The warning message may be a warning voice, a warning text message, a warning text, or a graphic message. The warning message is used to prompt relevant personnel to replace the LED with insufficient life in a timely manner.

[0099] In some embodiments, the pre-adjustment drive current is substituted into the drive current variable, and the accumulated operating time is substituted into the operating time variable to obtain the LED lifespan before the drive current is adjusted. Comparing the LED lifespan before the drive current is adjusted with the LED lifespan after the drive current is adjusted, it can be seen that the estimated LED lifespan after the drive current is adjusted is greater than the LED lifespan before the drive current is adjusted, indicating that adjusting the drive current can extend the LED lifespan.

[0100] In this embodiment, after adjusting the driving current, the life of the light emitting diode can be estimated based on the first functional relationship. The estimated life of the light emitting diode can be used for information display and life condition warning.

[0101] In one embodiment, the step of obtaining the first functional relationship includes: obtaining the chip thermal resistance of the light-emitting diode under multiple preset operating time periods; determining the functional relationship between the operating time and the thermal resistance based on the multiple preset operating time periods and the multiple chip thermal resistances; obtaining the functional relationship between the preset chip junction temperature of the light-emitting diode and the thermal resistance, and the functional relationship between the life of the light-emitting diode and the chip junction temperature of the light-emitting diode; determining the first functional relationship based on the functional relationship between the operating time and the thermal resistance, the functional relationship between the chip junction temperature of the light-emitting diode and the thermal resistance, and the functional relationship between the life of the light-emitting diode and the chip junction temperature of the light-emitting diode.

[0102] Among them, the first functional relationship, the functional relationship between the chip junction temperature of the LED and the thermal resistance, and the functional relationship between the LED life and the chip junction temperature of the LED are all experimentally measured before the display device is operated and stored in the controller.

[0103] The components of light-emitting diodes generally include a bracket, a chip, a gold wire, a packaging silicone resin, a phosphor, and the like. The chip thermal resistance is the thermal resistance from the chip of the light-emitting diode to the bracket. The process of obtaining the first functional relationship can be as follows: the controller obtains the chip thermal resistance of the light-emitting diode under multiple preset operating times obtained by experimental tests, and constructs a functional relationship between the operating time and the thermal resistance based on the chip thermal resistance under multiple preset operating times. The first functional relationship is then constructed by combining the functional relationship between the preset chip junction temperature and thermal resistance of the light-emitting diode, and the functional relationship between the life of the light-emitting diode and the chip junction temperature of the light-emitting diode. Table 2 shows a chip thermal resistance mapping table under multiple preset operating times.

[0104] Table 2 Chip thermal resistance mapping table under multiple preset operating time

[0105]

[0106] As can be seen from Table 2, the chip thermal resistance increases with the increase of usage time, and the functional relationship between operating time and thermal resistance can be fitted: Where Rj represents thermal resistance and T represents operating time.

[0107] The first functional relationship is obtained according to the functional relationship between the operating time and the thermal resistance, the functional relationship between the chip junction temperature of the light emitting diode and the thermal resistance, and the functional relationship between the life of the light emitting diode and the chip junction temperature of the light emitting diode.

[0108] In this embodiment, the chip thermal resistance of the light-emitting diode under multiple preset operating time periods is obtained to determine the functional relationship between the operating time and the thermal resistance. The functional relationship between the chip junction temperature of the light-emitting diode and the thermal resistance and the functional relationship between the life of the light-emitting diode and the chip junction temperature of the light-emitting diode are combined to obtain a first functional relationship. The first functional relationship can be fitted by the actually collected data, which is conducive to determining an accurate first functional relationship.

[0109] In one embodiment, the step of obtaining the functional relationship between the chip junction temperature and thermal resistance of the light-emitting diode includes: obtaining the ambient temperature of the environment in which the light-emitting diode in the display device is operating, the pin temperature rise of the cathode of the light-emitting diode chip, and the driving voltage of the light-emitting diode; and determining the functional relationship between the chip junction temperature and thermal resistance of the light-emitting diode based on the ambient temperature, the pin temperature rise, the driving voltage, and a preset functional relationship.

[0110] The preset functional relationship is a functional relationship pre-stored in the controller, which can be experimentally determined before the display device is operated. In some embodiments, the preset functional relationship can be: , where Tj represents the chip junction temperature, Ta represents the ambient temperature, ΔT represents the pin temperature rise, I represents the driving current of the light-emitting diode, V represents the driving voltage of the light-emitting diode, and Rj represents the thermal resistance.

[0111] The controller assigns the ambient temperature of the environment in which the light-emitting diode in the display device is working, the temperature rise of the pin of the cathode of the light-emitting diode chip, and the driving voltage of the light-emitting diode obtained through experimental testing to Ta, ΔT, and V in the preset functional relationship, respectively, to obtain the functional relationship between the chip junction temperature and thermal resistance of the light-emitting diode.

[0112] In one embodiment, after the display device is installed, it is rarely moved, and a fixed value of 25°C can be used as the ambient temperature Ta. ΔT can be controlled to a maximum value of 45°C, which is related to the heat dissipation design of the display device and the ambient wind speed. After the display device is installed, there is basically no change. The driving voltage of the light-emitting diode is taken to the maximum value of 3.4V. Therefore, the functional relationship between the chip junction temperature and thermal resistance of the light-emitting diode is obtained as follows: .

[0113] The functional relationship between the life of the LED and the chip junction temperature of the LED can be obtained by obtaining the life of the LED at multiple chip junction temperatures. In some embodiments, the functional relationship between the life of the LED and the chip junction temperature of the LED is: , where L represents the life of the light-emitting diode and Tj represents the junction temperature of the chip. Figure 3The graph shows the functional relationship between the life of a light emitting diode and the junction temperature of the light emitting diode chip according to an embodiment. It can be seen from the graph that the life of the light emitting diode decreases as the junction temperature of the light emitting diode chip increases.

[0114] Accordingly, by 、 ,as well as , a first functional relationship can be obtained to characterize the corresponding relationship among the light-emitting diode life variable (L), the driving current variable (I) and the operating time variable (T).

[0115] In this embodiment, the ambient temperature, pin temperature rise and driving voltage obtained through experimental testing are assigned to the corresponding variables in the preset functional relationship to obtain the functional relationship between the chip junction temperature and thermal resistance of the light-emitting diode, which is conducive to determining the accurate first functional relationship.

[0116] To explain the driving current control method and its effect in detail, the following is a detailed example:

[0117] The following example illustrates the control of the driving current of light-emitting diodes in a display device. The backlight of a display device is composed of light-emitting diodes, and the lifespan of the light-emitting diodes determines the lifespan of the display device backlight. The method for controlling the driving current of light-emitting diodes proposed in the embodiments of the present application is conducive to improving the lifespan of the display device backlight.

[0118] The controller in the display device detects the cumulative operating time and the cumulative activation time of the light emitting diodes in the display device, and determines the ratio of the cumulative operating time to the cumulative activation time.

[0119] When the ratio is greater than or equal to the first preset value, the usage category of the LED is determined to be a heavy category. When the ratio is greater than the second preset value and less than the first preset value, the usage category of the LED is determined to be a moderate category. When the ratio is less than or equal to the second preset value, the usage category of the LED is determined to be a light category.

[0120] The duration range to which the accumulated activation duration belongs is determined, and an adjustment period and a current adjustment coefficient are determined based on the usage level category and the duration range. At least one current adjustment moment is determined based on the current time and the adjustment period, and a current driving current is obtained. Based on the current driving current and the current adjustment coefficient, at least one current adjustment amount corresponding to the at least one current adjustment moment is obtained. At each of the at least one current adjustment moments, the driving current of the light-emitting diode is adjusted according to the corresponding current adjustment amount.

[0121] The first functional relationship is a functional relationship pre-stored in the controller and can be obtained through experimental measurement before the display device is operated. The first functional relationship is used to characterize the correspondence between the LED life variable, the drive current variable, and the operating time variable. The LED life is obtained by substituting the adjusted drive current into the drive current variable in the first functional relationship and the accumulated operating time into the operating time variable in the first functional relationship.

[0122] Among them, the step of obtaining the first functional relationship includes: obtaining the chip thermal resistance of the light-emitting diode under multiple preset operating time periods, determining the functional relationship between the operating time and the thermal resistance based on the multiple preset operating time periods and the multiple chip thermal resistances, obtaining the functional relationship between the preset chip junction temperature of the light-emitting diode and the thermal resistance, and the functional relationship between the life of the light-emitting diode and the chip junction temperature of the light-emitting diode, and determining the first functional relationship based on the functional relationship between the operating time and the thermal resistance, the functional relationship between the chip junction temperature of the light-emitting diode and the thermal resistance, and the functional relationship between the life of the light-emitting diode and the chip junction temperature of the light-emitting diode.

[0123] Among them, the step of obtaining the functional relationship between the chip junction temperature and thermal resistance of the light-emitting diode includes: obtaining the ambient temperature of the environment in which the light-emitting diode in the display device is working, the pin temperature rise of the negative electrode of the light-emitting diode chip and the driving voltage of the light-emitting diode, and determining the functional relationship between the chip junction temperature and thermal resistance of the light-emitting diode based on the ambient temperature, pin temperature rise, driving voltage and preset functional relationship.

[0124] In some embodiments, it is assumed that the life of the LED is 50,000 hours. Figure 3 It can be determined that the chip junction temperature Tj = 95 ° C, and the LED life is assigned to the LED life variable in the first functional relationship, and the functional relationship between the driving current and the operating time can be obtained as follows: .like Figure 4 The graph shows the functional relationship between the driving current and the operating time in one embodiment. As can be seen from the graph, the driving current decreases as the operating time increases. To ensure that the LED has a lifespan of 50,000 hours, the driving current can be continuously reduced as the operating time increases.

[0125] The above-mentioned driving current control method dynamically adjusts the driving current of the LED by obtaining the cumulative operating time and cumulative activation time of the LED in the display device. It takes into account the usage of the LED and adjusts the corresponding current adjustment amount of the driving current of the LED at different current adjustment moments. This reduces the probability of the LED dying after the encapsulating silicone resin cracks, which is beneficial to improving the service life of the display device backlight. At the same time, this method of regularly adjusting the driving current to the LED based on the changing law of the thermal resistance of the LED is beneficial to extending the service life of the backlight. The timing and amount of adjusting the driving current are classified and determined according to the type of usage of the LED, which is beneficial to dynamic adjustment of the driving current, thereby extending the service life of the backlight.

[0126] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0127] Based on the same inventive concept, the present application also provides a driving current control device for implementing the aforementioned driving current control method. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations in one or more driving current control device embodiments provided below can be found in the above-mentioned limitations on the driving current control method and will not be further elaborated here.

[0128] In an exemplary embodiment, Figure 5 As shown, a driving current control device 100 is provided, comprising: a detection module 120, a determination module 140 and an adjustment module 160, wherein:

[0129] A detection module 120 is used to detect the cumulative operating time and cumulative activation time of the light-emitting diodes in the display device;

[0130] a determination module 140, configured to determine at least one current adjustment moment and at least one current adjustment amount according to the accumulated operating time and the accumulated activation time, wherein the at least one current adjustment moment and the at least one current adjustment amount have a one-to-one correspondence;

[0131] The regulating module 160 is configured to regulate the driving current of the light emitting diode according to the corresponding current regulation amount at at least one current regulation moment.

[0132] The above-mentioned driving current control device dynamically adjusts the driving current of the light-emitting diode by obtaining the cumulative operating time and cumulative activation time of the light-emitting diode in the display device, taking into account the usage of the light-emitting diode, and adjusting the corresponding current adjustment amount of the driving current of the light-emitting diode at different current adjustment moments, thereby reducing the probability of the light-emitting diode dying after the encapsulating silicone resin cracks, which is beneficial to improving the service life of the backlight of the display device.

[0133] In one embodiment, at least one current adjustment moment and at least one current adjustment amount are determined based on the accumulated operating time and the accumulated activation time, and the determination module 140 is also used to: determine the usage level category of the light-emitting diode based on the accumulated operating time and the accumulated activation time; the usage level category is used to characterize the category to which the usage level of the light-emitting diode belongs; and determine at least one current adjustment moment and at least one current adjustment amount based on the usage level category and the accumulated activation time.

[0134] In one embodiment, the usage category of the LED is determined based on the cumulative operating time and the cumulative activation time, and the determination module 140 is also used to: determine the ratio of the cumulative operating time and the cumulative activation time; when the ratio is greater than or equal to a first preset value, determine the usage category of the LED to be a heavy category; when the ratio is greater than a second preset value and less than the first preset value, determine the usage category of the LED to be a moderate category; when the ratio is less than or equal to the second preset value, determine the usage category of the LED to be a light category.

[0135] In one embodiment, at least one current adjustment moment and at least one current adjustment amount are determined based on the usage level category and the cumulative activation time. The determination module 140 is also used to: determine the duration range to which the cumulative activation time belongs; determine the adjustment cycle and the current adjustment coefficient based on the usage level category and the duration range; determine at least one current adjustment moment and at least one current adjustment amount based on the adjustment cycle and the current adjustment coefficient.

[0136] In one embodiment, at least one current adjustment moment and at least one current adjustment amount are determined based on the adjustment cycle and the current adjustment coefficient, and the determination module 140 is further used to: obtain the current driving current; determine at least one current adjustment moment based on the current moment and the adjustment cycle; and obtain at least one current adjustment amount corresponding to at least one current adjustment moment based on the current driving current and the current adjustment coefficient.

[0137] In one embodiment, the driving current control device 100 also includes a life determination module, which is further used to: obtain a preset first functional relationship, the first functional relationship is used to characterize the correspondence between the light-emitting diode life variable, the driving current variable and the operating time variable; bring the adjusted driving current into the driving current variable in the first functional relationship, and bring the accumulated operating time into the operating time variable in the first functional relationship to obtain the life of the light-emitting diode.

[0138] Each module in the aforementioned drive current control device can be implemented in whole or in part through software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in the computer device in the form of software, so that the processor can call and execute the corresponding operations of each module.

[0139] In an exemplary embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as shown in FIG. Figure 6 As shown. The computer device includes a processor, memory, an input / output interface, a communication interface, a display unit, and an input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are connected to the system bus via the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals via wired or wireless means, and the wireless means can be achieved via Wi-Fi, mobile cellular networks, NFC (near-field communication), or other technologies. When executed by the processor, the computer program implements a drive current control method. The display unit of the computer device is used to form a visually visible image and can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device casing, or an external keyboard, touchpad or mouse.

[0140] Those skilled in the art will understand that Figure 6 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0141] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0142] Detect the cumulative operating time and cumulative activation time of the light-emitting diode in the display device; determine at least one current adjustment moment and at least one current adjustment amount based on the cumulative operating time and the cumulative activation time, and the at least one current adjustment moment and the at least one current adjustment amount have a one-to-one correspondence; and adjust the driving current of the light-emitting diode according to the corresponding current adjustment amount at the at least one current adjustment moment.

[0143] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0144] The usage category of the light-emitting diode is determined based on the accumulated operating time and the accumulated activation time; the usage category is used to characterize the category to which the usage of the light-emitting diode belongs; and at least one current adjustment moment and at least one current adjustment amount are determined based on the usage category and the accumulated activation time.

[0145] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0146] Determine the ratio of the cumulative operating time to the cumulative activation time; when the ratio is greater than or equal to a first preset value, determine that the usage category of the light emitting diode is a heavy category; when the ratio is greater than a second preset value and less than the first preset value, determine that the usage category of the light emitting diode is a moderate category; when the ratio is less than or equal to the second preset value, determine that the usage category of the light emitting diode is a light category.

[0147] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0148] Determine the duration range to which the accumulated activation duration belongs; determine an adjustment period and a current adjustment coefficient based on the usage category and the duration range; and determine at least one current adjustment moment and at least one current adjustment amount based on the adjustment period and the current adjustment coefficient.

[0149] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0150] Obtaining the current driving current; determining at least one current adjustment moment according to the current moment and the adjustment period; and obtaining at least one current adjustment amount corresponding to the at least one current adjustment moment according to the current driving current and the current adjustment coefficient.

[0151] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0152] Obtain a preset first functional relationship, which is used to characterize the correspondence between the light-emitting diode life variable, the driving current variable and the operating time variable; bring the adjusted driving current into the driving current variable in the first functional relationship, and bring the accumulated operating time into the operating time variable in the first functional relationship to obtain the light-emitting diode life.

[0153] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0154] Detect the cumulative operating time and cumulative activation time of the light-emitting diode in the display device; determine at least one current adjustment moment and at least one current adjustment amount based on the cumulative operating time and the cumulative activation time, and the at least one current adjustment moment and the at least one current adjustment amount have a one-to-one correspondence; and adjust the driving current of the light-emitting diode according to the corresponding current adjustment amount at the at least one current adjustment moment.

[0155] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0156] The usage category of the light-emitting diode is determined based on the accumulated operating time and the accumulated activation time; the usage category is used to characterize the category to which the usage of the light-emitting diode belongs; and at least one current adjustment moment and at least one current adjustment amount are determined based on the usage category and the accumulated activation time.

[0157] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0158] Determine the ratio of the cumulative operating time to the cumulative activation time; when the ratio is greater than or equal to a first preset value, determine that the usage category of the light emitting diode is a heavy category; when the ratio is greater than a second preset value and less than the first preset value, determine that the usage category of the light emitting diode is a moderate category; when the ratio is less than or equal to the second preset value, determine that the usage category of the light emitting diode is a light category.

[0159] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0160] Determine the duration range to which the accumulated activation duration belongs; determine an adjustment period and a current adjustment coefficient based on the usage category and the duration range; and determine at least one current adjustment moment and at least one current adjustment amount based on the adjustment period and the current adjustment coefficient.

[0161] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0162] Obtaining the current driving current; determining at least one current adjustment moment according to the current moment and the adjustment period; and obtaining at least one current adjustment amount corresponding to the at least one current adjustment moment according to the current driving current and the current adjustment coefficient.

[0163] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0164] Obtain a preset first functional relationship, which is used to characterize the correspondence between the light-emitting diode life variable, the driving current variable and the operating time variable; bring the adjusted driving current into the driving current variable in the first functional relationship, and bring the accumulated operating time into the operating time variable in the first functional relationship to obtain the light-emitting diode life.

[0165] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0166] Detect the cumulative operating time and cumulative activation time of the light-emitting diode in the display device; determine at least one current adjustment moment and at least one current adjustment amount based on the cumulative operating time and the cumulative activation time, and the at least one current adjustment moment and the at least one current adjustment amount have a one-to-one correspondence; and adjust the driving current of the light-emitting diode according to the corresponding current adjustment amount at the at least one current adjustment moment.

[0167] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0168] The usage category of the light-emitting diode is determined based on the accumulated operating time and the accumulated activation time; the usage category is used to characterize the category to which the usage of the light-emitting diode belongs; and at least one current adjustment moment and at least one current adjustment amount are determined based on the usage category and the accumulated activation time.

[0169] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0170] Determine the ratio of the cumulative operating time to the cumulative activation time; when the ratio is greater than or equal to a first preset value, determine that the usage category of the light emitting diode is a heavy category; when the ratio is greater than a second preset value and less than the first preset value, determine that the usage category of the light emitting diode is a moderate category; when the ratio is less than or equal to the second preset value, determine that the usage category of the light emitting diode is a light category.

[0171] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0172] Determine the duration range to which the accumulated activation duration belongs; determine an adjustment period and a current adjustment coefficient based on the usage category and the duration range; and determine at least one current adjustment moment and at least one current adjustment amount based on the adjustment period and the current adjustment coefficient.

[0173] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0174] Obtaining the current driving current; determining at least one current adjustment moment according to the current moment and the adjustment period; and obtaining at least one current adjustment amount corresponding to the at least one current adjustment moment according to the current driving current and the current adjustment coefficient.

[0175] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0176] Obtain a preset first functional relationship, which is used to characterize the correspondence between the light-emitting diode life variable, the driving current variable and the operating time variable; bring the adjusted driving current into the driving current variable in the first functional relationship, and bring the accumulated operating time into the operating time variable in the first functional relationship to obtain the light-emitting diode life.

[0177] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0178] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the above-mentioned embodiments. In particular, any reference to memory, database, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processors involved in the various embodiments provided herein may be, but are not limited to, general-purpose processors, central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), programmable logic devices (PLDs), data processing logic devices based on quantum computing, and the like.

[0179] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0180] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A driving current control method, characterized in that: The method comprises: Detecting the cumulative operating time and cumulative activation time of the light emitting diodes in the display device; Determining at least one current adjustment moment and at least one current adjustment amount according to the accumulated operating time and the accumulated activation time, wherein the at least one current adjustment moment and the at least one current adjustment amount have a one-to-one correspondence; At the at least one current adjustment moment, the driving current of the light emitting diode is adjusted according to the corresponding current adjustment amount.

2. The method according to claim 1, characterized in that The determining, based on the accumulated operating time and the accumulated activation time, at least one current adjustment moment and at least one current adjustment amount includes: Determining a usage category of the light emitting diode according to the accumulated operating time and the accumulated activation time; the usage category is used to represent the category to which the usage category of the light emitting diode belongs; At least one current adjustment time and at least one current adjustment amount are determined according to the usage level category and the accumulated activation time.

3. The method according to claim 2, characterized in that The determining, based on the accumulated operating time and the accumulated activation time, the usage category of the light emitting diode includes: Determining a ratio of the accumulated running time to the accumulated activation time; When the ratio is greater than or equal to a first preset value, determining that the usage level of the light emitting diode is a heavy category; When the ratio is greater than a second preset value and less than the first preset value, determining that the usage level category of the light emitting diode is a moderate category; When the ratio is less than or equal to the second preset value, it is determined that the usage category of the light emitting diode is a light category.

4. The method according to claim 2, characterized in that The determining, according to the usage level category and the accumulated activation duration, at least one current adjustment moment and at least one current adjustment amount includes: Determining the duration range to which the accumulated activation duration belongs; Determining an adjustment period and a current adjustment coefficient according to the usage level category and the duration range; At least one current adjustment moment and at least one current adjustment amount are determined according to the adjustment period and the current adjustment coefficient.

5. The method according to claim 4, characterized in that The determining, according to the adjustment period and the current adjustment coefficient, at least one current adjustment moment and at least one current adjustment amount includes: Get the current driving current; Determining at least one current adjustment moment according to the current moment and the adjustment period; At least one current adjustment amount corresponding to at least one current adjustment moment is obtained according to the current driving current and the current adjustment coefficient.

6. The method according to claim 1, characterized in that The method further comprises: Obtaining a preset first functional relationship, where the first functional relationship is used to characterize a corresponding relationship among a light-emitting diode life variable, a driving current variable, and an operating time variable; The adjusted driving current is substituted into the driving current variable in the first functional relationship, and the accumulated operating time is substituted into the operating time variable in the first functional relationship to obtain the life of the light emitting diode.

7. A driving current control device, characterized in that: The device comprises: A detection module, used to detect the cumulative operating time and cumulative activation time of the light-emitting diodes in the display device; a determination module, configured to determine at least one current adjustment moment and at least one current adjustment amount according to the accumulated operating time and the accumulated activation time, wherein the at least one current adjustment moment and the at least one current adjustment amount have a one-to-one correspondence; The regulating module is used to regulate the driving current of the light emitting diode according to the corresponding current regulation amount at the at least one current regulation moment.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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