Display control method, apparatus, device, and medium

Abstract

The application relates to a display control method, a display control device, a display control equipment and a medium. The display control method comprises the following steps: determining parallel capacitance data of a light-emitting element in a display screen, wherein the parallel capacitance data is capacitance value data of a capacitor connected in parallel with the light-emitting element; determining driving current compensation data according to the parallel capacitance data and to-be-displayed data of the display screen; adjusting a driving current based on the driving current compensation data to obtain target driving current; and outputting a target driving signal based on the target driving current, wherein the target driving signal is used for triggering the light-emitting element to emit light and display, so that the screen flashing phenomenon caused by frequent switching of high and low levels of the display screen during the display process can be changed, the degree of screen flashing is reduced, and the screen quality problem caused by screen flashing in the prior art is solved.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display control method, apparatus, device and medium. Background Technology

[0002] With the upgrading of screens in the optoelectronic display industry and the rapid development of various new technologies, in addition to liquid crystal displays (LCDs), more and more products on the market are using organic light-emitting diode (OLED) displays.

[0003] OLED displays, due to their light-emitting principle, do not require backlighting, are highly flexible, and boast vibrant colors, earning them the title of "dream displays." However, OLED displays also have drawbacks. For instance, in low-light conditions, the pulse-width modulation (PWM) dimming method of OLED screens results in very short high-level periods for the OLED lamps, leading to severe screen flicker. This significantly increases the risk of eye strain. Currently, direct current (DC) dimming is primarily used to reduce flicker, but the problem persists, and unstable voltage or current can also cause image quality issues. Summary of the Invention

[0004] This application provides a display control method, apparatus, device, and medium to solve the flicker problem of OLED screens and improve screen image quality.

[0005] Firstly, this application provides a display control method, including:

[0006] Determine the parallel capacitance data of the light-emitting element in the display screen, wherein the parallel capacitance data is the capacitance value data of the capacitor connected in parallel with the light-emitting element;

[0007] Based on the parallel capacitor data and the data to be displayed on the display screen, determine the drive current compensation data;

[0008] Based on the drive current compensation data, the drive current is adjusted to obtain the target drive current;

[0009] Based on the target driving current, a target driving signal is output, which is used to trigger the light-emitting element to emit light for display.

[0010] Optionally, determining the drive current compensation data based on the parallel capacitor data and the display data to be displayed includes:

[0011] Obtain the data to be displayed on the display screen, the data to be displayed including the display data for displaying the next frame of the screen;

[0012] Determine the grayscale data corresponding to the display data of the next frame shown on the display screen;

[0013] Based on the grayscale data, the drive current compensation data corresponding to the parallel voltage capacitance data is determined.

[0014] Optionally, based on the grayscale data, determining the drive current compensation data corresponding to the parallel voltage capacitance data includes:

[0015] Obtain the preset grayscale data of the display screen;

[0016] The grayscale difference is obtained by calculating using the displayed grayscale data and the grayscale data.

[0017] If the grayscale difference is greater than the preset grayscale error threshold, then based on the preset capacitor grayscale current comparison parameter, the current compensation data corresponding to the grayscale data and the parallel capacitor data is determined.

[0018] The current compensation data is determined as the drive current compensation data.

[0019] Optionally, the above display control method further includes:

[0020] The display screen is driven to display based on the duty cycle compensation data of the display screen;

[0021] Detect the actual brightness of the display screen;

[0022] Determine the brightness difference between the actual brightness and the preset display brightness of the display screen;

[0023] If the brightness difference is not within the preset brightness error range, the duty cycle compensation data is adjusted based on the brightness difference until the brightness difference is within the brightness error range.

[0024] When the brightness difference is within the brightness error range, the correspondence between the duty cycle compensation data and the parallel capacitor data is recorded based on the actual brightness or the display brightness.

[0025] Based on the aforementioned correspondence, and combined with the parallel capacitor data, simulation tests are conducted to obtain the capacitor grayscale current comparison parameters.

[0026] Optionally, adjusting the drive current based on the drive current compensation data to obtain the target drive current includes:

[0027] The drive current compensation data is used to generate drive control commands;

[0028] In response to the drive control command, the operating voltage of the light-emitting element is adjusted until the drive current of the light-emitting element reaches the target drive current, which is the drive current after current compensation based on the drive current compensation data.

[0029] Optionally, before adjusting the operating voltage of the light-emitting element in response to the drive control command, the method further includes:

[0030] Determine the duty cycle compensation data corresponding to the parallel capacitor data;

[0031] The duty cycle is adjusted based on the duty cycle compensation data to obtain the output duty cycle;

[0032] According to the output duty cycle, a dimming control signal for the light-emitting element is output, and the dimming control signal is used to generate the driving current.

[0033] Optionally, the step of outputting a target drive signal based on the target drive current includes:

[0034] Determine the power supply adjustment data corresponding to the target drive current;

[0035] The operating voltage of the light-emitting element is adjusted using the power adjustment data to obtain the target operating voltage;

[0036] The target operating voltage signal is used as the target driving signal and provided to the light-emitting element.

[0037] Secondly, this application provides a display control device, comprising:

[0038] A parallel capacitor determination module is used to determine the parallel capacitor data of the light-emitting element in the display screen, wherein the parallel capacitor data is the capacitance value data of the capacitor connected in parallel with the light-emitting element.

[0039] The drive current compensation module is used to determine drive current compensation data based on the parallel capacitor data and the data to be displayed on the display screen.

[0040] A drive current adjustment module is used to adjust the drive current based on the drive current compensation data to obtain a target drive current.

[0041] The target driving module is used to output a target driving signal based on the target driving current, and the target driving signal is used to trigger the light-emitting element to emit light for display.

[0042] Thirdly, this application provides a display device, including: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; the memory is used to store computer programs; and the processor is used to implement the steps of the display control method described in any of the above claims when executing the program stored in the memory.

[0043] Fourthly, this application also provides a computer storage medium storing computer-executable instructions for performing the steps of the display control method described in any of the preceding claims of this application.

[0044] The display control method, apparatus, device, and medium provided in this application determine the parallel capacitance data of the light-emitting element in the display screen, and determine the drive current compensation data based on the parallel capacitance data and the data to be displayed on the display screen. The drive current is adjusted based on the drive current compensation data to obtain the target drive current. Then, a target drive signal is output to the light-emitting element based on the target drive current to trigger the light-emitting element to emit light and display. This can change the screen flickering phenomenon caused by the frequent switching of high and low output levels during the display process, reduce the degree of screen flicker, and solve the screen image quality problem caused by screen flicker in the prior art. Attached Figure Description

[0045] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0046] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0047] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0048] Figure 1 A schematic diagram of a basic driving architecture for OLEDs provided in existing related technologies;

[0049] Figure 2 This is a schematic diagram of a PWM dimming principle provided in existing related technologies;

[0050] Figure 3A schematic diagram illustrating the connection between an OLED LED chip and a parallel capacitor, as an example of this application;

[0051] Figure 4 This is a flowchart illustrating the steps of a display control method provided in an embodiment of this application.

[0052] Figure 5 A schematic diagram of a compensation duty cycle value is provided as an example in this application;

[0053] Figure 6 A structural block diagram of a display control device provided in an embodiment of this application;

[0054] Figure 7 This is a schematic diagram of the structure of a display device provided in an embodiment of this application.

[0055] Wherein, T1 is the first transistor, T2 is the driving transistor, Gate line is the scan line, Source line is the data line, C1 is the parallel capacitor, C is the storage capacitor, ELVDD is the power supply terminal, and ELVSS is the second power supply terminal. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0057] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0058] In the basic driving architecture of OLED, such as Figure 1As shown, when the gate line input is high, the first transistor T1 is turned on at a high level, and the level signal provided by the source line is transmitted to the driver transistor T2 through the first transistor T1; when the source line input is high, the driver transistor T2 is turned on at a high level, and the OLED connected to the driver transistor T2 forms a path under the action of the power supply terminal ELVDD and the second power supply terminal ELVSS, and the OLED light emits light; the longer the high level of the first transistor T1 lasts, the longer the OLED emits light; and the higher the brightness of the OLED within one row of light, such as... Figure 2 As shown, the principle of PWM dimming is to control the conduction time of the first transistor T1, thereby controlling the duration of light emission in a single row of the OLED, and thus controlling its brightness. In other words, PWM dimming regulates screen brightness by turning the screen on and off; the brightness of each pixel remains constant, only the duration of pixel illumination changes. When the required brightness for the displayed image is low, the time T1 is on in each row is shorter, and the OLED's light emission time is correspondingly shorter. This causes the human eye to perceive the duration of pixel darkness more easily, resulting in a noticeable flickering. The eye constantly adjusts to this, leading to eye fatigue and potential eye damage. Therefore, it is urgent to solve the flicker problem of OLED screens to achieve eye protection.

[0059] Considering that the brightness of pixels remains constant during PWM dimming, meaning the current flowing through the OLED remains constant, existing technologies mainly employ DC dimming to reduce flicker. DC dimming primarily adjusts the current flowing through the OLED, controlling its brightness by regulating the current level. However, this brightness control method suffers from unstable current control precision, resulting in poor image quality.

[0060] To address the issue of screen flicker, this application provides a display control method, apparatus, device, and medium. By determining the parallel capacitance data of the light-emitting elements in the display screen, driving current compensation data is determined based on the parallel capacitance data and the data to be displayed on the display screen. Subsequently, the driving current is adjusted based on the driving current compensation data, and a target driving signal is output to the light-emitting elements based on the adjusted target driving current to trigger the light-emitting elements to emit light and display. This can change the screen flickering phenomenon caused by the frequent switching of high and low output levels during the display process, reduce the degree of screen flicker, and effectively improve the display effect of the product.

[0061] The parallel capacitance data for the light-emitting element refers to the capacitance value of the capacitor connected in parallel with the light-emitting element. Taking an OLED LED as an example, as shown in Figure 3, a capacitor C1 can be connected in parallel next to the OLED LED structure as a parallel capacitor. One end of the parallel capacitor C1 is connected to the positive terminal of the OLED LED, and the other end is connected to ground. Thus, when the driving transistor T2 turns on to supply power to the LED, it also charges the capacitor. In terms of the current waveform, the originally bright phase (during the period when the power supply terminal ELVDD outputs a high-level signal) displays normally. However, during the originally dark phase (during the period when the power supply terminal ELVDD outputs a low-level signal), due to the discharge of the parallel capacitor C1, the brightness does not jump directly from the bright phase to the dark phase. This is equivalent to the bright phase becoming longer, and the dark phase becoming shorter throughout the display process. The time that the human eye perceives as dark is shorter, the degree of screen flicker is reduced, and the phenomenon is improved.

[0062] From the perspective of the overall panel structure, all the capacitors connected in parallel with the LEDs are arranged in a separate array layer. One end of each capacitor in the capacitor layer is connected to the positive electrode of the OLED through a silver paste dot, and the other end of the capacitor is connected to ground through a silver paste dot. The capacitor layer is uniformly distributed, and the size of the capacitor area is determined according to the required capacitance value. This application does not limit this.

[0063] When a capacitor is connected in parallel across the two ends of an OLED LED, the capacitor is charged while the OLED LED is being powered. In this embodiment, the capacitance value of the capacitor connected in parallel with the OLED LED is determined, and the driving current is compensated based on the parallel capacitor data and the data to be displayed. Then, the driving current is adjusted based on the driving current compensation data, thereby changing the screen flickering phenomenon caused by the frequent switching of high and low output levels during the OLED display process, thus improving the screen flicker effect, thereby enhancing the display effect of the product and achieving the effect of eye protection.

[0064] Figure 4 This is a flowchart illustrating the steps of a display control method provided in an embodiment of this application. Figure 4 As shown, the display control method provided in this application embodiment may include the following steps:

[0065] Step 410: Determine the parallel capacitance data of the light-emitting element in the display screen, wherein the parallel capacitance data is the capacitance value data of the capacitor connected in parallel with the light-emitting element;

[0066] In this step, the capacitance value of the capacitor connected in parallel with the two ends of the light-emitting element in the panel can be determined as the parallel capacitance data of the light-emitting element. For example, if the current parallel capacitance value is 0.5pF, 0.5pF can be determined as the parallel capacitance data; or if the current parallel capacitance value is 1pF or 1.5pF, 1pF or 1.5pF can be determined as the parallel capacitance data.

[0067] Step 420: Determine the drive current compensation data based on the parallel capacitor data and the data to be displayed on the display screen;

[0068] The data to be displayed can be any data to be displayed, such as all the display data to be displayed in the next frame of the display screen. Specifically, in this embodiment of the application, when the screen is displayed, all the display data of the next frame can be obtained through the logic board (Tcon) of the display screen as the data to be displayed, and the grayscale values ​​are analyzed one by one to determine the corresponding current compensation data based on the grayscale data and parallel voltage data corresponding to the display data, which is used as the driving current compensation data. For example, after the parallel capacitor data is determined, that is, after the capacitance value of the parallel capacitor is determined, the algorithm can be designed to use Tcon to read the grayscale value of the display data of the next frame as the grayscale data corresponding to the data to be displayed. Thus, the driving current compensation data can be determined based on the grayscale data and the parallel voltage and capacitance data, so that the driving current can be adjusted according to the driving current compensation data when displaying the next frame of data, that is, step 430 is executed.

[0069] Step 430: Adjust the drive current based on the drive current compensation data to obtain the target drive current;

[0070] Specifically, in this embodiment of the application, after determining the drive current compensation data, a control command can be output to the driver based on the drive current compensation data. The driver changes the current at the power supply terminal of the light-emitting element to adjust the drive current. The adjustable drive current is then used as the target drive current so that a target drive signal can be output based on the target drive current to drive the light-emitting element to emit light.

[0071] Step 440: Output a target driving signal based on the target driving current. The target driving signal is used to trigger the light-emitting element to emit light for display.

[0072] The target driving signal can refer to various signals used to drive the light-emitting element to emit light, such as gate driving signals provided by scan lines and data signals provided by data lines. This embodiment does not limit this. In this step, the duty cycle of its own output can be controlled by Tcon based on the target driving current, so as to output the target driving signal according to the duty cycle. In this way, the light-emitting element can be triggered to emit light and display the screen image through the target driving signal, thereby realizing the display of the screen image.

[0073] In summary, the embodiments of this application determine the parallel capacitance data of the light-emitting elements in the display screen, and determine the driving current compensation data based on the parallel capacitance data and the data to be displayed on the display screen. The driving current is then adjusted based on the driving current compensation data to obtain the target driving current. Subsequently, a target driving signal is output to the light-emitting elements based on the target driving current to trigger the light-emitting elements to emit light and display. This can change the screen flickering phenomenon caused by the frequent switching of high and low output levels during the display process, reduce the degree of screen flicker, effectively improve the display effect of the product, and solve the screen image quality problem caused by screen flicker in the prior art.

[0074] For example, during product design, the capacitance value of the parallel capacitor connected in parallel with the light-emitting element in the display screen can be determined first. This value serves as the parallel capacitance data for the light-emitting element in the display screen. Since the larger the product size, the larger the capacitance value should be, and considering that a large capacitance value would result in insufficient charging during a single line of display and significant impact on brightness during discharge, the capacitance value of the parallel capacitor can be set in the pF level. After determining the capacitance value of the parallel capacitor, an algorithm can be designed to read the grayscale value of the next frame displayed on the screen via Tcon and compare it with the compensation value in the parameters. When displaying the next frame of data, Tcon calls the compensation value to determine the drive current compensation data and outputs a control command to the Driver. The Driver then changes the current magnitude of the ELVDD power supply terminal of the light-emitting element. Simultaneously, Tcon can directly control its own output duty cycle, thereby completing the compensation of the duty cycle and the current of the ELVDD power supply terminal, ultimately improving the screen flicker effect.

[0075] In some optional embodiments of this application, determining the drive current compensation data based on the parallel capacitor data and the data to be displayed on the display screen may specifically include the following sub-steps:

[0076] Sub-step S1: Obtain the data to be displayed on the display screen, the data to be displayed includes the display data for displaying the next frame of the screen;

[0077] Sub-step S2: Determine the grayscale data corresponding to the display data of the next frame on the display screen;

[0078] Sub-step S3: Based on the grayscale data, determine the drive current compensation data corresponding to the parallel voltage capacitance data.

[0079] Specifically, after acquiring all the display data of the next frame displayed on the screen, this embodiment can perform grayscale data analysis on the display data of the next frame displayed on the screen to determine the grayscale data corresponding to the display data. It can also compare the grayscale data corresponding to the display data with the preset display grayscale data in the screen, thereby determining the low gray value based on the comparison result. The compensation data corresponding to the low gray value is used as the driving current compensation data corresponding to the parallel voltage capacitance data, so that the driving current of the light-emitting element can be adjusted according to the driving current compensation data to perform brightness compensation for the parallel capacitor of the light-emitting element. In this way, by connecting a capacitor in parallel next to the light-emitting element, the screen flickering phenomenon caused by the frequent switching of the high and low output levels of the light-emitting element during the display process can be changed, thereby improving the display effect of the product.

[0080] Optionally, in this embodiment, the driving current compensation data corresponding to the parallel voltage-capacitance data is determined based on the grayscale data. Specifically, this may include: acquiring preset display grayscale data of the display screen; calculating a grayscale difference using the display grayscale data and the grayscale data; if the grayscale difference is greater than a preset grayscale error threshold, determining current compensation data corresponding to the grayscale data and the parallel capacitor data based on preset capacitor grayscale current comparison parameters; and determining the current compensation data as the driving current compensation data. The preset display grayscale data of the display screen can be a grayscale value pre-set for the brightness of the display screen, such as a preset display grayscale value of 64 gray. This embodiment does not limit this. The preset capacitor grayscale current comparison parameters may include comparison parameters pre-set for the capacitor, grayscale, and compensation current, specifically used to represent the correspondence between the parallel capacitor, grayscale, and compensation current.

[0081] Specifically, in product design, both PWM dimming and DC dimming require controlling the duty cycle of the current through the light-emitting element to determine brightness. In this embodiment, since a capacitor is connected in parallel across the light-emitting element, the capacitor is charged while the light-emitting element is being powered, thus reducing the brightness of the light-emitting element under the same duty cycle. To avoid this reduction in brightness under the same duty cycle due to the parallel capacitor, this embodiment determines drive current compensation data based on the parallel capacitor data and the data to be displayed on the display screen after determining the parallel capacitor data, and then adjusts the duty cycle of the present invention accordingly.

[0082] For example, during the experimental phase, a capacitor can be connected in parallel at the output of an existing product source to simulate the capacitance value across the OLED LED chip. When the source output powers the OLED LED chip, it simultaneously powers the capacitor. Assuming the current parallel capacitor value is 0.5pF and the expected brightness is 20 grayscale, a DC dimming mode drive signal with the same duty cycle is controlled to output the same signal. Then, an optical brightness measurement instrument is used to read the actual brightness of the display screen, and the read actual brightness can be compared with the expected brightness of 20 grayscale. Based on the comparison result, the current compensation duty cycle value ΔD1 can be confirmed. Figure 5 As shown, a correspondence between parallel capacitance, grayscale, and compensation current can be established based on the compensation duty cycle value, i.e., a correspondence of 0.5pF—20 grayscale—ΔD11 is established. In the same manner, the compensation values ​​ΔD12, ΔD13…ΔD1n are measured for grayscale values ​​of 40, 60…255 to establish the relationship between different grayscale values ​​and compensation values ​​under the same parallel capacitance. Then, the same test can be performed with capacitance values ​​of 1pF, 1.5pF…npF to obtain the relationship between different parallel capacitances and grayscale values ​​Gn and compensation current. The correspondence between the compensation value ΔDmn and the grayscale value Gn is obtained. Then, based on the correspondence between the grayscale value Gn and ΔDmn, the capacitor grayscale current comparison parameters can be preset. In order to determine the current compensation data corresponding to the grayscale data and the parallel capacitor data based on the preset capacitor grayscale current comparison parameters, the brightness compensation after the OLED lamp bead is connected to the parallel capacitor can be realized. This changes the screen flickering phenomenon caused by the frequent switching of high and low output levels of the OLED lamp bead during the display process, and improves the display effect of the product.

[0083] In an optional embodiment of this application, a preset capacitor grayscale current comparison parameter can be determined through simulation testing during the display screen testing process. Further, the display control method provided in this embodiment may also include: driving the display screen to display based on the display screen's duty cycle compensation data; detecting the actual brightness of the display screen; determining the brightness difference between the actual brightness and the preset display brightness of the display screen; if the brightness difference is not within a preset brightness error range, adjusting the duty cycle compensation data based on the brightness difference until the brightness difference is within the brightness error range; when the brightness difference is within the brightness error range, recording the correspondence between the duty cycle compensation data and the parallel capacitor data based on the actual brightness or the display brightness; and performing a simulation test based on the correspondence and the parallel capacitor data to obtain the capacitor grayscale current comparison parameter.

[0084] As an example of this application, assuming the parallel capacitor has a capacitance of 0.5pF, a grayscale of 20, and a duty cycle compensation of ΔD11, the brightness is measured using an optical brightness measuring instrument under these conditions. The difference between this brightness and grayscale 20 is calculated, assuming the difference is ΔG1. During the experimental phase, this difference can be controlled by adjusting the power... To ensure accurate compensation, the IC outputs ELVDD current. Adjustments can be made in 10mA increments. For example, if the original ELVDD current is 500mA, the test can be conducted by adjusting the current by 10mA for each increment. The first increment is 490mA. At this point, the brightness is measured to see if it matches the brightness of grayscale 20. If not, the current is lowered to 480mA, and the brightness is measured again. This process is repeated until the actual brightness matches the set brightness. The current compensation value ΔI11 is recorded at this point, or the adjustment level (1, 2, 3, etc.) is recorded. This method allows for the simulation of a comparison parameter table of 0.5pF - grayscale Gn - current compensation value ΔI1m. Then, capacitance values ​​of 1pF, 1.5pF...npF can be used. The simulation yields a comparison parameter table of npF-Gn-ΔInm, which can be used as a preset capacitor grayscale current comparison parameter and stored in Tcon. Data storage can be performed using registers within the Tcon chip during code compilation, such as capacitor setting value storage register reg1, grayscale readback value storage register reg2, current compensation value storage register reg3, and comparison parameter table storage register reg4. This allows for subsequent determination of current compensation data corresponding to grayscale data and parallel capacitor data based on the preset capacitor grayscale current comparison parameters. This enables brightness compensation after the OLED LED is connected to a parallel capacitor, thereby mitigating the flickering phenomenon caused by the frequent switching of high and low output levels during OLED LED display and improving the product's display effect.

[0085] Taking a preset grayscale value of 64 as an example, before the screen displays the image, the parallel capacitor data can be written into register reg1 when setting the Tcon code to set the capacitor value. During screen display, Tcon reads all the display data of the next frame from the over-driver (OD) table and analyzes the low grayscale values ​​one by one. That is, it subtracts the grayscale data corresponding to each display data from the preset grayscale value of 64, and judges the grayscale data as low grayscale when it is less than 64. When the display data is judged as low grayscale, it is automatically stored in register reg2. Then, Tcon can retrieve the comparison parameter table stored in register reg4, compare the data in reg2 one by one, confirm the current compensation value according to the value of reg2, and write this value into reg x+1. Then, Tcon transmits the value of reg x+1 to the power management chip (Power IC) through the Inter-Integrated Circuit (IIC) protocol, so that the Power IC controls the current output to the power supply terminal ELVDD to adjust and transmits it to the Driver IC. Finally, the Driver... The ELVDD voltage output by the IC is corrected to automatically adjust the brightness by adjusting the ELVDD voltage, thereby achieving the purpose of automatically adjusting the brightness by adjusting the ELVDD voltage to avoid screen flicker.

[0086] Optionally, embodiments of this application may adjust the drive current based on the drive current compensation data to obtain a target drive current. Specifically, this may include: generating a drive control command using the drive current compensation data; and adjusting the operating voltage of the light-emitting element in response to the drive control command until the drive current of the light-emitting element reaches the target drive current, where the target drive current is the drive current after current compensation based on the drive current compensation data. The drive control command may refer to a control command generated by calling the drive current compensation data, specifically used to notify the driver to change the current magnitude at the power supply terminal of the light-emitting element to automatically correct the ELVDD voltage at the power supply terminal of the light-emitting element and adjust its brightness.

[0087] For example, after Tcon determines the current compensation data corresponding to the grayscale data and parallel capacitor data as the drive current compensation data, it can call the drive current compensation data to generate a drive control command and output it to the Driver. The Driver responds to the drive control command and adjusts the operating voltage of the light-emitting element. This changes the current magnitude of the power supply terminal ELVDD through the Driver, so that the changed drive current can be used as the target drive current. At the same time, Tcon can directly control its own output duty cycle to compensate for the duty cycle and the power supply terminal ELVDD, ultimately achieving the effect of improving screen flicker.

[0088] In an optional embodiment of this application, the display control method provided in this application may further include, before adjusting the operating voltage of the light-emitting element in response to the drive control command: determining duty cycle compensation data corresponding to the parallel capacitor data; adjusting the duty cycle according to the duty cycle compensation data to obtain an output duty cycle; and outputting a dimming control signal for the light-emitting element according to the output duty cycle, wherein the dimming control signal is used to generate the drive current. The dimming control signal may include various control signals required for the dimming mode of the light-emitting element, such as a target drive signal for triggering the light-emitting element to emit light, a clock signal, etc., which are not limited in this embodiment.

[0089] In PWM dimming mode, the original brightness is displayed by integrating multiple current cycles within a single line of display time. Therefore, in an optional embodiment of this application, after determining the duty cycle compensation data corresponding to the parallel capacitor data, the duty cycle compensation data can be evenly distributed across each cycle to achieve brightness compensation. For example, the number of current cycles within a single line of display time and the duty cycle compensation data corresponding to the parallel capacitor data can be used to calculate the duty cycle that needs to be compensated for each current cycle, which is then used as the output duty cycle. Based on this output duty cycle, the dimming control signal of the light-emitting element is output. By adjusting the duty cycle, brightness is compensated while maintaining the improvement of screen flicker. This shortens the dark time of the duty cycle waveform while keeping the actual output brightness of the screen unchanged, thereby improving the screen flicker phenomenon observed by the human eye and solving the screen image quality problem caused by screen flicker in existing related technologies.

[0090] Optionally, in this embodiment of the application, the duty cycle is adjusted based on the duty cycle compensation data to obtain the output duty cycle. Specifically, this may include: determining the number of current cycles for a single line of display time on the screen; calculating a single-cycle compensation duty cycle using the duty cycle compensation data and the number of current cycles; and adjusting the duty cycle based on the single-cycle compensation duty cycle to obtain the output duty cycle. Here, the number of current cycles for a single line of display time refers to the number of current cycles within a single line of display time; the single-cycle compensation duty cycle refers to the duty cycle that needs to be compensated for in each cycle.

[0091] As an example of this application, when setting the capacitance value of the parallel capacitor and simulating the G grayscale brightness, if a duty cycle compensation value of ΔDnm' is obtained, the duty cycle compensation value of ΔDnm' can be used as the duty cycle compensation data corresponding to the parallel capacitor data, and evenly distributed to each current cycle to achieve brightness compensation. For example, if displaying 100 grayscale within the current line time is obtained by integrating 10 current cycles, the duty cycle compensation data corresponding to the parallel capacitor data can be divided by the number of current cycles, 10, to obtain the duty cycle that needs to be compensated for in each cycle. That is, the duty cycle that needs to be compensated for in each cycle is ΔD11' / 10, and can be... The duty cycle that needs to be compensated in each cycle is used as the single-cycle compensation duty cycle. Based on the duty cycle that needs to be compensated in each cycle, the duty cycle compensation for each current cycle in PWM dimming mode is realized. Thus, the duty cycle can be adjusted based on the duty cycle compensation for each current cycle to obtain the output duty cycle. Subsequently, based on this output duty cycle, the driver output current for ELVDD compensation at the power supply terminal can be controlled by Tcon as the target drive current. This shortens the dark time of the duty cycle waveform without changing the actual output brightness of the screen, thereby improving the screen flicker phenomenon observed by the human eye and achieving the purpose of improving the display effect of the display product.

[0092] Optionally, embodiments of this application may output a target driving signal based on the target driving current, specifically including: determining power adjustment data corresponding to the target driving current; adjusting the operating voltage of the light-emitting element using the power adjustment data to obtain a target operating voltage; and providing the signal of the target operating voltage as the target driving signal to the light-emitting element, thereby triggering the light-emitting element to emit light for display. Specifically, although adjusting the duty cycle can compensate for brightness while maintaining improved screen flicker, in actual use, due to the sensitivity of the light-emitting element to current, the lower the grayscale, the lower the sensitivity of the light-emitting element to current, and the fewer the number of duty cycle cycles available for adjustment at low grayscale. For example, if the grayscale is low, the duty cycle will be very small, and the already small duty cycle needs to be divided into multiple cycles for processing, resulting in even smaller high-level values ​​for each cycle. This may lead to a situation where, after duty cycle compensation is completed, brightness increases due to capacitor discharge during actual use. To avoid the situation where the brightness of the display increases due to capacitor discharge after the duty cycle compensation is completed, this application embodiment, after determining the power adjustment data based on the target driving current, can use the power adjustment data to adjust the working voltage of the light-emitting element, and can use the adjusted working voltage as the target working voltage. Then, the signal of the target working voltage is used as the target driving signal and provided to the light-emitting element, so as to compensate the current of the power supply terminal ELVDD of the light-emitting element by adjusting the working voltage of the light-emitting element, thereby realizing the current compensation of the power supply terminal ELVDD and improving the display effect of the display product.

[0093] It should be noted that, for the sake of simplicity, the method embodiments are described as a series of actions. However, those skilled in the art should know that the embodiments of this application are not limited to the described order of actions, because according to the embodiments of this application, some steps may be performed in other orders or simultaneously.

[0094] like Figure 6 As shown in the figure, this application embodiment also provides a display control device, including:

[0095] Parallel capacitor determination module 610 is used to determine the parallel capacitor data of the light-emitting element in the display screen, wherein the parallel capacitor data is the capacitance value data of the capacitor connected in parallel with the light-emitting element.

[0096] The drive current compensation module 620 is used to determine drive current compensation data based on the parallel capacitor data and the data to be displayed on the display screen.

[0097] The drive current adjustment module 630 is used to adjust the drive current based on the drive current compensation data to obtain the target drive current.

[0098] The target driving module 640 is used to output a target driving signal based on the target driving current, and the target driving signal is used to trigger the light-emitting element to emit light for display.

[0099] Optionally, the drive current compensation module 620 includes:

[0100] The data to be displayed acquisition submodule is used to acquire the data to be displayed on the display screen, which includes the display data for displaying the next frame of the screen;

[0101] The grayscale data determination submodule is used to determine the grayscale data corresponding to the display data of the next frame of the screen.

[0102] The drive current compensation data submodule is used to determine the drive current compensation data corresponding to the parallel voltage capacitance data based on the grayscale data.

[0103] Optionally, the drive current compensation data submodule is specifically used for:

[0104] Obtain the preset grayscale data of the display screen;

[0105] The grayscale difference is obtained by calculating using the displayed grayscale data and the grayscale data.

[0106] If the grayscale difference is greater than the preset grayscale error threshold, then based on the preset capacitor grayscale current comparison parameter, the current compensation data corresponding to the grayscale data and the parallel capacitor data is determined.

[0107] The current compensation data is determined as the drive current compensation data.

[0108] Optionally, the above-mentioned display control device further includes:

[0109] The display driving module is used to drive the display screen to display based on the duty cycle compensation data of the display screen;

[0110] A brightness detection module is used to detect the actual brightness of the display screen;

[0111] A brightness difference determination module is used to determine the brightness difference between the actual brightness and the preset display brightness of the display screen;

[0112] The duty cycle compensation data adjustment module is used to adjust the duty cycle compensation data based on the brightness difference when the brightness difference is not within the preset brightness error range, until the brightness difference is within the brightness error range;

[0113] The correspondence recording module is used to record the correspondence between the duty cycle compensation data and the parallel capacitor data based on the actual brightness or the display brightness, when the brightness difference is within the brightness error range.

[0114] The simulation test module is used to perform simulation tests based on the correspondence and the parallel capacitor data to obtain the capacitor grayscale current comparison parameters.

[0115] Optionally, the drive current adjustment module 630 includes:

[0116] The control command submodule is used to generate drive control commands using the drive current compensation data.

[0117] The operating voltage adjustment submodule is used to adjust the operating voltage of the light-emitting element in response to the drive control command until the drive current of the light-emitting element reaches the target drive current, wherein the target drive current is the drive current after current compensation based on the drive current compensation data.

[0118] Optionally, the above-mentioned display control device further includes:

[0119] The duty cycle compensation data determination module is used to determine the duty cycle compensation data corresponding to the parallel capacitor data;

[0120] The duty cycle adjustment module is used to adjust the duty cycle based on the duty cycle compensation data to obtain the output duty cycle.

[0121] The signal output module is used to output a dimming control signal for the light-emitting element according to the output duty cycle, and the dimming control signal is used to generate the drive current.

[0122] Optionally, the target driving module 640 includes:

[0123] The determination submodule is used to determine the power supply adjustment data corresponding to the target drive current;

[0124] The adjustment submodule is used to adjust the operating voltage of the light-emitting element using the power adjustment data to obtain the target operating voltage;

[0125] The signal submodule is used to provide the light-emitting element with the signal of the target operating voltage as the target driving signal.

[0126] In a specific implementation, the aforementioned display control device can be integrated into the display device. This allows the display device to determine drive current compensation data based on the parallel capacitance data of the light-emitting elements in the display screen and the data to be displayed on the display screen. The drive current is then adjusted based on the drive current compensation data to obtain the target drive current. Subsequently, a target drive signal is output to the light-emitting elements based on the target drive current. This triggers the light-emitting elements to emit light for display, thereby changing the screen flickering phenomenon caused by the frequent switching of high and low output levels during the display process, reducing the degree of screen flicker, and solving the screen image quality problem caused by screen flicker in existing related technologies.

[0127] like Figure 7 As shown, this application embodiment provides a display device, including a processor 111, a communication interface 112, a memory 113, and a communication bus 114. The processor 111, the communication interface 112, and the memory 113 communicate with each other through the communication bus 114. The memory 113 is used to store computer programs. When the processor 111 executes the program stored in the memory 113, it implements the steps of the display control method provided in any of the foregoing method embodiments.

[0128] In one embodiment of this application, when the processor 111 executes the program stored in the memory 113, it implements the display control method provided in any of the foregoing method embodiments, including: determining parallel capacitance data of the light-emitting element in the display screen, wherein the parallel capacitance data is the capacitance value data of the capacitor connected in parallel with the light-emitting element; determining drive current compensation data based on the parallel capacitance data and the data to be displayed on the display screen; adjusting the drive current based on the drive current compensation data to obtain a target drive current; and outputting a target drive signal based on the target drive current, wherein the target drive signal is used to trigger the light-emitting element to emit light for display.

[0129] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the display control method provided in any of the foregoing method embodiments.

[0130] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0131] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented using software plus a general-purpose hardware platform, or of course, using hardware. Based on this understanding, the above technical solutions, in essence or the parts that contribute to the related technology, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0132] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0133] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A display control method characterized by comprising: include: Determine the parallel capacitance data of the light-emitting element in the display screen, wherein the parallel capacitance data is the capacitance value data of the parallel capacitor connected in parallel with the light-emitting element; Based on the parallel capacitor data and the data to be displayed on the display screen, determine the drive current compensation data; Based on the drive current compensation data, the drive current is adjusted to obtain the target drive current; Based on the target driving current, a target driving signal is output, which is used to trigger the light-emitting element to emit light for display. The step of determining the drive current compensation data based on the parallel capacitor data and the display data to be displayed on the display screen includes: acquiring the display data to be displayed on the display screen, the display data to be displayed including the display data of the display screen displaying the next frame; determining the grayscale data corresponding to the display data of the display screen displaying the next frame; and determining the drive current compensation data corresponding to the parallel capacitor data based on the grayscale data. The method further includes: determining the duty cycle compensation data corresponding to the parallel capacitor data; adjusting the duty cycle according to the duty cycle compensation data to obtain the output duty cycle; and outputting the dimming control signal of the light-emitting element according to the output duty cycle.

2. The method of claim 1, wherein, Based on the grayscale data, determine the drive current compensation data corresponding to the parallel capacitor data, including: Obtain the preset grayscale data of the display screen; The grayscale difference is obtained by calculating using the displayed grayscale data and the grayscale data. If the grayscale difference is greater than the preset grayscale error threshold, then based on the preset capacitor grayscale current comparison parameter, the current compensation data corresponding to the grayscale data and the parallel capacitor data is determined. The current compensation data is determined as the drive current compensation data.

3. The method of claim 2, wherein, Also includes: Detect the actual brightness of the display screen; Determine the brightness difference between the actual brightness and the preset display brightness of the display screen; If the brightness difference is not within the preset brightness error range, the duty cycle compensation data is adjusted based on the brightness difference until the brightness difference is within the brightness error range. When the brightness difference is within the brightness error range, the correspondence between the duty cycle compensation data and the parallel capacitor data is recorded based on the actual brightness or the display brightness. Based on the aforementioned correspondence, and combined with the parallel capacitor data, simulation tests are conducted to obtain the capacitor grayscale current comparison parameters.

4. The method of claim 1, wherein, The step of adjusting the drive current based on the drive current compensation data to obtain the target drive current includes: The drive current compensation data is used to generate drive control commands; In response to the drive control command, the operating voltage of the light-emitting element is adjusted until the drive current of the light-emitting element reaches the target drive current, which is the drive current after current compensation based on the drive current compensation data.

5. The method of claim 4, wherein, The dimming control signal is used to generate the driving current of the light-emitting element.

6. The method according to any one of claims 1 to 5, characterized in that, The step of outputting a target drive signal based on the target drive current includes: Determine the power supply adjustment data corresponding to the target drive current; The operating voltage of the light-emitting element is adjusted using the power adjustment data to obtain the target operating voltage; The target operating voltage signal is used as the target driving signal and provided to the light-emitting element.

7. A display control device characterized by comprising: include: A parallel capacitor determination module is used to determine the parallel capacitor data of the light-emitting element in the display screen, wherein the parallel capacitor data is the capacitance value data of the parallel capacitor connected in parallel with the light-emitting element. The drive current compensation module is used to determine drive current compensation data based on the parallel capacitor data and the data to be displayed on the display screen. A drive current adjustment module is used to adjust the drive current based on the drive current compensation data to obtain a target drive current. The target driving module is used to output a target driving signal based on the target driving current, and the target driving signal is used to trigger the light-emitting element to emit light for display. The drive current compensation module includes: The data to be displayed acquisition submodule is used to acquire the data to be displayed on the display screen, which includes the display data for displaying the next frame of the screen; The grayscale data determination submodule is used to determine the grayscale data corresponding to the display data of the next frame of the screen. The drive current compensation data submodule is used to determine the drive current compensation data corresponding to the parallel capacitor data based on the grayscale data; The display control device further includes: a duty cycle compensation data determination module, a duty cycle adjustment module, and a signal output module; The duty cycle compensation data determination module is used to determine the duty cycle compensation data corresponding to the parallel capacitor data; The duty cycle adjustment module is used to adjust the duty cycle based on the duty cycle compensation data to obtain the output duty cycle. The signal output module is used to output a dimming control signal for the light-emitting element according to the output duty cycle.

8. A display device, characterized by comprising: include: The processor, communication interface, memory, and communication bus are connected, with the processor, communication interface, and memory communicating with each other via the communication bus. Memory, used to store computer programs; When a processor executes a program stored in memory, it implements the steps of the display control method as described in any one of claims 1-6.

9. A computer storage medium storing computer-executable instructions for performing the steps of the display control method as described in any one of claims 1-6.

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