Charging control method of organic light-emitting display matrix

Abstract

The invention provides a charging control method for an organic light-emitting display matrix, and belongs to the technical field of process control, and the method comprises the steps: monitoring the real-time state information of the organic light-emitting display matrix in real time, and obtaining the target brightness information of the organic light-emitting display matrix; determining a charging control strategy of the organic light-emitting display matrix in the adjustment time period based on the real-time state information and the target brightness information of the organic light-emitting display matrix; performing charging control on the organic light-emitting display matrix within the adjustment time period based on the charging control strategy; acquiring update state information of the organic light-emitting display matrix after charging control, and performing feedback control on the organic light-emitting display matrix based on the update state information. Damage of pixel units can be avoided, accurate energy distribution between pixel columns is achieved, dynamic charging and brightness optimization of a pixel level are achieved, closed-loop adjustment is achieved, the power utilization efficiency, brightness uniformity and response speed of a display matrix are improved, and a stable high-quality display effect is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of process control, and in particular to a charging control method for an organic light emitting display matrix. Background Art

[0002] In the existing organic light-emitting display matrix (OLED display) technology, brightness control and energy efficiency optimization are one of the key technical challenges. Traditional OLED display matrices usually use preset charging parameters to control the current and voltage of each pixel unit, but this method often cannot adapt to dynamically changing display content and environmental conditions. As the brightness, color and detail requirements of the display change, the brightness of the pixels may become uneven or overcharged, resulting in unstable display effects and even shortening the service life of the display. In addition, since the characteristics of each pixel may be different, a single charging solution cannot meet the precise needs of all pixels, which may result in energy waste or reduced display effects.

[0003] Therefore, the present invention provides a charging control method for an organic light emitting display matrix. Summary of the invention

[0004] The present invention provides a charging control method for an organic light emitting display matrix. By analyzing the real-time status information and target brightness information of the organic light emitting display matrix, a charging control strategy is determined, the organic light emitting display matrix is ​​charged and controlled within an adjustment time period, and updated status information of the organic light emitting display matrix after the charging control is obtained. Feedback control is performed on the organic light emitting display matrix, thereby avoiding damage to pixel units, correcting low brightness problems, achieving precise energy distribution between pixel columns, achieving dynamic charging and brightness optimization at the pixel level, achieving closed-loop regulation, improving the power utilization efficiency, brightness uniformity and response speed of the display matrix, and ensuring a stable and high-quality display effect.

[0005] The present invention provides a charging control method for an organic light emitting display matrix, comprising: 101: monitoring the real-time status information of the organic light emitting display matrix in real time, and obtaining the target brightness information of the organic light emitting display matrix; 102: Determine a charging control strategy of the organic light emitting display matrix within an adjustment time period based on the real-time state information and target brightness information of the organic light emitting display matrix; 103: Controlling charging of the organic light emitting display matrix within the adjustment time period based on the charging control strategy; 104 : Acquire update status information of the organic light emitting display matrix after the charging control is performed, and perform feedback control on the organic light emitting display matrix based on the update status information.

[0006] According to a charging control method of an organic light emitting display matrix provided by the present invention, real-time status information of the organic light emitting display matrix is ​​monitored in real time to obtain target brightness information of the organic light emitting display matrix, including: Real-time monitoring of the real-time sub-state information of each pixel unit in the organic light-emitting display matrix, wherein the real-time sub-state information includes the current brightness value, current charging voltage, current charging state and current load state of the corresponding pixel unit; Determining real-time status information based on real-time sub-state information of all pixel units of the organic light emitting display matrix; A target brightness requirement of each pixel unit in the organic light emitting display matrix is ​​obtained, and target brightness information is determined based on the target brightness requirements of all pixel units in the organic light emitting display matrix.

[0007] According to a charging control method of an organic light emitting display matrix provided by the present invention, a charging control strategy of the organic light emitting display matrix within an adjustment time period is determined based on real-time state information and target brightness information of the organic light emitting display matrix, including: Determining an expected brightness value of each pixel unit in the organic light emitting display matrix based on a target brightness requirement of each pixel unit in the organic light emitting display matrix; Determining column adjustment information for each column in the organic light emitting display matrix based on real-time sub-state information of all pixel units in each column in the organic light emitting display matrix and expected brightness values; Determine a voltage adjustment function and a current adjustment function for each column in the organic light emitting display matrix based on the column adjustment information of each column in the organic light emitting display matrix; Determining a charging control sub-strategy for each column in the organic light emitting display matrix based on a voltage adjustment function and a current adjustment function for each column in the organic light emitting display matrix; Based on the charging control sub-strategies of all columns in the organic light emitting display matrix, a charging control strategy of the organic light emitting display matrix is ​​determined.

[0008] According to a charging control method of an organic light emitting display matrix provided by the present invention, based on column adjustment information of each column in the organic light emitting display matrix, a voltage adjustment function and a current adjustment function of each column in the organic light emitting display matrix are determined, including: Determining a voltage adjustment function for each column in the organic light emitting display matrix based on column adjustment information for each column in the organic light emitting display matrix; ; ; ; ; in, represents the voltage adjustment function of the jth column of the organic light emitting display matrix at the tth time within the adjustment time period, represents the charging efficiency coefficient, represents the proportional term of the voltage regulation function, represents the integral term of the voltage regulation function, represents the differential term of the voltage regulation function, represents the proportional gain parameter, represents the integral gain parameter, represents the differential gain parameter, represents the brightness value-charge conversion coefficient, T represents the adjustment time period, N1 represents the number of rows of the organic light emitting display matrix, N2 represents the number of columns of the organic light emitting display matrix, represents the expected brightness value of the pixel unit in the i-th row and j-th column of the organic light emitting display matrix at the t-th time within the adjustment time period, represents the current brightness value of the pixel unit in the i-th row and j-th column of the organic light emitting display matrix at the t-th time within the adjustment time period, represents the maximum column allowable power of the jth column of the organic light emitting display matrix, represents the real-time charging voltage of the jth column of the organic light emitting display matrix, represents the equivalent resistance of the load of the jth column of the organic light emitting display matrix, represents the power of the jth column of the organic light emitting display matrix at the tth moment within the adjustment time period, represents the average power of all columns of the organic light emitting display matrix at the tth moment within the adjustment time period, represents the response time parameter of the jth column of the organic light emitting display matrix, represents the power balance coefficient, represents the power variation coefficient, Indicates the time compensation coefficient; Determining a current adjustment function for each column in the organic light emitting display matrix based on column adjustment information for each column in the organic light emitting display matrix; ; Wherein, Tt represents the time of moment t within the adjustment time period, Indicates the maximum comprehensive allowable power of the organic light emitting display matrix.

[0009] According to a charging control method of an organic light emitting display matrix provided by the present invention, charging control is performed on the organic light emitting display matrix within an adjustment time period based on a charging control strategy, comprising: Based on the charging control sub-strategy of each column of the organic light emitting display matrix within the adjustment time period, charging control is performed on all pixel units in each column of the organic light emitting display matrix respectively.

[0010] According to a charging control method for an organic light-emitting display matrix provided by the present invention, the updated status information includes updated sub-status information, overcharge information and brightness information of all pixel units in the organic light-emitting display matrix, wherein the updated sub-status information includes the updated brightness value, updated charging voltage, updated charging status and updated load status of the corresponding pixel unit in the next adjusted specified time period after the adjusted specified time period.

[0011] According to a charging control method of an organic light emitting display matrix provided by the present invention, obtaining update status information of the organic light emitting display matrix after charging control, comprises: After the charging control is performed, an overcharge detection is performed on each pixel unit in each column of the organic light emitting display matrix to determine whether there is an excessively high charging current; overcharge information is determined based on the overcharge detection and judgment results of all pixel units in all columns of the organic light emitting display matrix, and high charging restrictions are performed on pixel units with high charging currents; After charging control, brightness detection is performed on each pixel unit in each column of the organic light emitting display matrix to determine whether there is a low-brightness pixel unit, brightness information is determined based on the brightness detection and judgment results of all pixel units in all columns in the organic light emitting display matrix, and time compensation is performed on the low-brightness pixel unit.

[0012] According to a charging control method of an organic light emitting display matrix provided by the present invention, feedback control is performed on the organic light emitting display matrix based on update status information, comprising: Determine a charging control strategy for a next adjustment specified time period after the adjustment specified time period based on all update sub-state information in the update state information; Adjusting the charging control strategy for the next adjustment specified time period after the adjustment specified time period based on the overcharge information and the brightness information in the update status information; Based on the charging control strategy for the next adjustment specified time period after the adjusted adjustment specified time period, feedback control is performed on the organic light emitting display matrix.

[0013] Compared with the prior art, the present invention has the following beneficial effects: By analyzing the real-time status information and target brightness information of the organic light-emitting display matrix, determining the charging control strategy, performing charging control on the organic light-emitting display matrix within an adjustment time period, obtaining updated status information of the organic light-emitting display matrix after charging control, and performing feedback control on the organic light-emitting display matrix, it is possible to avoid damage to pixel units, correct low brightness problems, achieve precise energy distribution between pixel columns, realize dynamic charging and brightness optimization at the pixel level, implement closed-loop regulation, and improve the power utilization efficiency, brightness uniformity, and response speed of the display matrix, thereby ensuring a stable, high-quality display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 The figure is a flow chart of a charging control method of an organic light emitting display matrix provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Embodiment 1: The embodiment of the present invention provides a charging control method for an organic light emitting display matrix, such as Figure 1 As shown, including: 101: monitoring the real-time status information of the organic light emitting display matrix in real time, and obtaining the target brightness information of the organic light emitting display matrix; 102: Determine a charging control strategy of the organic light emitting display matrix within an adjustment time period based on the real-time state information and target brightness information of the organic light emitting display matrix; 103: Controlling charging of the organic light emitting display matrix within the adjustment time period based on the charging control strategy; 104 : Acquire update status information of the organic light emitting display matrix after the charging control is performed, and perform feedback control on the organic light emitting display matrix based on the update status information.

[0018] In this embodiment, the organic light emitting display matrix is ​​an OLED panel composed of a plurality of pixels and is used to display image information.

[0019] In this embodiment, the target brightness information is a brightness target value set according to user requirements or display content.

[0020] In this embodiment, the charging control strategy ensures stable operation of the matrix and achievement of target brightness by dynamically allocating power resources.

[0021] In this embodiment, during the adjusted time period, the display matrix is ​​charged according to the charging control strategy to optimize power distribution.

[0022] In this embodiment, the adjustment time period represents a set time period, which changes continuously according to display requirements.

[0023] The beneficial effects of the above technical solution are as follows: by analyzing the real-time status information and target brightness information of the organic light-emitting display matrix, determining the charging control strategy, performing charging control on the organic light-emitting display matrix within an adjustment time period, obtaining updated status information of the organic light-emitting display matrix after charging control, and performing feedback control on the organic light-emitting display matrix, pixel unit damage can be avoided, low brightness problems can be corrected, precise energy distribution between pixel columns can be achieved, dynamic charging and brightness optimization at the pixel level can be achieved, closed-loop regulation can be achieved, the power utilization efficiency, brightness uniformity and response speed of the display matrix can be improved, and a stable, high-quality display effect can be ensured.

[0024] Embodiment 2: An embodiment of the present invention provides a charging control method for an organic light emitting display matrix, comprising: monitoring the real-time state information of the organic light emitting display matrix in real time, and obtaining the target brightness information of the organic light emitting display matrix, including: Real-time monitoring of the real-time sub-state information of each pixel unit in the organic light-emitting display matrix, wherein the real-time sub-state information includes the current brightness value, current charging voltage, current charging state and current load state of the corresponding pixel unit; Determining real-time status information based on real-time sub-state information of all pixel units of the organic light emitting display matrix; A target brightness requirement of each pixel unit in the organic light emitting display matrix is ​​obtained, and target brightness information is determined based on the target brightness requirements of all pixel units in the organic light emitting display matrix.

[0025] In this embodiment, each pixel unit in the display matrix is ​​monitored in detail, and its current brightness, charging voltage, charging state, load state, etc. are recorded.

[0026] In this embodiment, the pixel unit represents the smallest display unit of the display matrix, is composed of an OLED structure, and is responsible for the light-emitting display of a single point.

[0027] In this embodiment, the sub-state information represents the real-time working parameters of a single pixel unit, including: current brightness value: the current luminous intensity of the pixel unit; current charging voltage: the real-time voltage value received by the pixel unit; current charging state: whether the pixel unit is in a charging or discharging state; current load state: the charge demand state of the pixel unit, which determines the energy input demand.

[0028] In this embodiment, the sub-state information of all pixel units is integrated into global state information for evaluating the operation status of the entire display matrix.

[0029] In this embodiment, the real-time status information is composed of the status of all pixel units in the matrix, reflecting the overall working status.

[0030] In this embodiment, the target brightness requirement of each pixel unit is obtained, and the target brightness information of the entire display matrix is ​​obtained after integration.

[0031] In this embodiment, the target brightness requirement indicates the brightness value that each pixel unit needs to achieve.

[0032] The beneficial effects of the above technical solution are: real-time monitoring of the real-time status information of the organic light-emitting display matrix and acquisition of the target brightness information of the organic light-emitting display matrix can improve data quality and provide data basis for determining the charging control strategy of the organic light-emitting display matrix within the adjustment time period.

[0033] Embodiment 3: An embodiment of the present invention provides a charging control method for an organic light emitting display matrix, which determines a charging control strategy for the organic light emitting display matrix within an adjustment time period based on real-time state information and target brightness information of the organic light emitting display matrix, including: Determining an expected brightness value of each pixel unit in the organic light emitting display matrix based on a target brightness requirement of each pixel unit in the organic light emitting display matrix; Determining column adjustment information for each column in the organic light emitting display matrix based on real-time sub-state information of all pixel units in each column in the organic light emitting display matrix and expected brightness values; Determine a voltage adjustment function and a current adjustment function for each column in the organic light emitting display matrix based on the column adjustment information of each column in the organic light emitting display matrix; Determining a charging control sub-strategy for each column in the organic light emitting display matrix based on a voltage adjustment function and a current adjustment function for each column in the organic light emitting display matrix; Based on the charging control sub-strategies of all columns in the organic light emitting display matrix, a charging control strategy of the organic light emitting display matrix is ​​determined.

[0034] In this embodiment, according to the target brightness requirement of each pixel unit (determined by the display picture content), its expected brightness value is determined to guide the actual brightness output.

[0035] In this embodiment, the target brightness requirement represents the brightness value that the pixel unit needs to achieve under an ideal state.

[0036] In this embodiment, the expected brightness value refers to the brightness value that the pixel unit should actually achieve, calculated based on the target brightness requirement and the system parameters.

[0037] In this embodiment, column-level adjustment information is determined based on the real-time sub-state information and expected brightness values ​​of all pixel units in each column of the display matrix to optimize resource allocation between columns.

[0038] In this embodiment, the column adjustment information is a comprehensive adjustment parameter for each column in the display matrix.

[0039] In this embodiment, the column adjustment information is used to determine the voltage adjustment function and current adjustment function required for each column for precise adjustment.

[0040] In this embodiment, based on the voltage and current adjustment function of each column, a column-level charging control sub-strategy is formulated to accurately control the charging process of each column.

[0041] In this embodiment, the charging control sub-strategy is a charging control parameter optimized for each column, including voltage, current regulation mode and charging time.

[0042] In this embodiment, the charging control sub-strategies of all columns are integrated to form a global charging control strategy to ensure that the brightness requirements and power efficiency of the entire display matrix are optimized.

[0043] In this embodiment, the charging control strategy is a global-level optimization scheme that coordinates the charging behaviors of each column in the matrix to achieve refined control.

[0044] The beneficial effects of the above technical solution are as follows: based on the real-time status information and target brightness information of the organic light-emitting display matrix, the charging control strategy of the organic light-emitting display matrix within the adjustment time period is determined, which can achieve precise energy distribution between pixel columns, and effectively improve the power utilization efficiency, brightness uniformity and response speed of the display matrix.

[0045] Embodiment 4: An embodiment of the present invention provides a charging control method for an organic light emitting display matrix, which determines a voltage adjustment function and a current adjustment function for each column in the organic light emitting display matrix based on column adjustment information of each column in the organic light emitting display matrix, including: Determining a voltage adjustment function for each column in the organic light emitting display matrix based on column adjustment information for each column in the organic light emitting display matrix; ; ; ; ; in, represents the voltage adjustment function of the jth column of the organic light emitting display matrix at the tth time within the adjustment time period, represents the charging efficiency coefficient, represents the proportional term of the voltage regulation function, represents the integral term of the voltage regulation function, represents the differential term of the voltage regulation function, represents the proportional gain parameter, represents the integral gain parameter, represents the differential gain parameter, represents the brightness value-charge conversion coefficient, T represents the adjustment time period, N1 represents the number of rows of the organic light emitting display matrix, N2 represents the number of columns of the organic light emitting display matrix, represents the expected brightness value of the pixel unit in the i-th row and j-th column of the organic light emitting display matrix at the t-th time within the adjustment time period, represents the current brightness value of the pixel unit in the i-th row and j-th column of the organic light emitting display matrix at the t-th time within the adjustment time period, represents the maximum column allowable power of the jth column of the organic light emitting display matrix, represents the real-time charging voltage of the jth column of the organic light emitting display matrix, represents the equivalent resistance of the load of the jth column of the organic light emitting display matrix, represents the power of the jth column of the organic light emitting display matrix at the tth moment within the adjustment time period, represents the average power of all columns of the organic light emitting display matrix at the tth moment within the adjustment time period, represents the response time parameter of the jth column of the organic light emitting display matrix, represents the power balance coefficient, represents the power variation coefficient, Indicates the time compensation coefficient; Determining a current adjustment function for each column in the organic light emitting display matrix based on column adjustment information for each column in the organic light emitting display matrix; ; Wherein, Tt represents the time of moment t within the adjustment time period, Indicates the maximum comprehensive allowable power of the organic light emitting display matrix.

[0046] In this embodiment, the charging efficiency coefficient Indicates the efficiency of converting driving voltage into actual power.

[0047] In this embodiment, It indicates the process that the driving current gradually approaches the target over time.

[0048] In this embodiment, It represents the total power of all columns of the organic light emitting display matrix at the tth moment within the adjustment time period.

[0049] In this embodiment, It represents the brightness value difference of the j-th column of the organic light emitting display matrix at the t-th time within the adjustment time period.

[0050] In this embodiment, the voltage adjustment function represents a dynamic adjustment formula for the voltage of each column, ensuring that the charging voltage matches the voltage requirement of the pixels in the column.

[0051] In this embodiment, the current adjustment function represents a distribution formula for the current in each column, ensuring that the pixels in the column obtain sufficient current to achieve the brightness target.

[0052] The beneficial effects of the above technical solution are as follows: based on the column adjustment information of each column in the organic light-emitting display matrix, the voltage adjustment function and the current adjustment function of each column in the organic light-emitting display matrix are determined, which can improve the data basis for realizing accurate energy distribution between pixel columns, so as to improve the power utilization efficiency and brightness uniformity of the display matrix.

[0053] Embodiment 5: An embodiment of the present invention provides a charging control method for an organic light emitting display matrix, which controls the charging of the organic light emitting display matrix within an adjustment time period based on a charging control strategy, including: Based on the charging control sub-strategy of each column of the organic light emitting display matrix within the adjustment time period, charging control is performed on all pixel units in each column of the organic light emitting display matrix respectively.

[0054] In this embodiment, for all pixel units in each column during the adjustment period, based on their voltage and current adjustment functions, a column-level charging control sub-strategy is implemented to achieve accurate charging of the pixel units.

[0055] In this embodiment, the charging control sub-strategy indicates that a dynamically adjusted charging control scheme is provided for each column of pixel units within the adjustment period to ensure that the brightness uniformity and energy efficiency utilization rate of the pixels within the column are maximized.

[0056] The beneficial effect of the above technical solution is that the charging of the organic light-emitting display matrix is ​​controlled within the adjustment time period based on the charging control strategy, which can improve the brightness control accuracy, power utilization efficiency and pixel consistency.

[0057] Embodiment 6: An embodiment of the present invention provides a charging control method for an organic light-emitting display matrix, wherein updated status information includes updated sub-status information, overcharge information, and brightness information of all pixel units in the organic light-emitting display matrix, wherein the updated sub-status information includes an updated brightness value, an updated charging voltage, an updated charging status, and an updated load status of the corresponding pixel unit in the next adjusted specified time period after the adjusted specified time period.

[0058] In this embodiment, for each pixel unit in the organic light emitting display matrix, after the current adjustment cycle ends, the state information for the next adjustment cycle is recorded and calculated to ensure the continuity and accuracy of the charging control.

[0059] In this embodiment, the updated brightness value represents the target value of the brightness change of the pixel unit after the current adjustment cycle ends, which is used for brightness optimization in the next cycle.

[0060] In this embodiment, the updated charging voltage represents the voltage input required by the pixel unit in the next adjustment cycle, which is used to ensure the matching of the charging requirements.

[0061] In this embodiment, the updated charging status indicates the charging completion status of the pixel unit (eg, undercharged, overcharged, etc.) after the current cycle ends, providing a reference for the next cycle.

[0062] In this embodiment, the updated load state represents the load condition (such as load power, impedance, etc.) of the pixel unit in the current cycle, which is used to optimize the power distribution in the next cycle.

[0063] The beneficial effect of the above technical solution is that the update status information can be determined to improve the data basis for the feedback control of the organic light emitting display matrix.

[0064] Embodiment 7: An embodiment of the present invention provides a charging control method for an organic light emitting display matrix, which obtains update status information of the organic light emitting display matrix after charging control, including: After the charging control is performed, an overcharge detection is performed on each pixel unit in each column of the organic light emitting display matrix to determine whether there is an excessively high charging current; overcharge information is determined based on the overcharge detection and judgment results of all pixel units in all columns of the organic light emitting display matrix, and high charging restrictions are performed on pixel units with high charging currents; After charging control, brightness detection is performed on each pixel unit in each column of the organic light emitting display matrix to determine whether there is a low-brightness pixel unit, brightness information is determined based on the brightness detection and judgment results of all pixel units in all columns in the organic light emitting display matrix, and time compensation is performed on the low-brightness pixel unit.

[0065] In this embodiment, overcharge detection means that after completing the charging control, the charging current of each pixel unit in each column is monitored to determine whether it exceeds a safety threshold (ie, an excessively high charging current).

[0066] In this embodiment, the overcharge information represents status data generated based on the overcharge detection results of all columns and all pixel units, and is used to locate and record the overcharge phenomenon.

[0067] In this embodiment, high charge limitation means limiting the subsequent charging input (such as adjusting voltage and current parameters) of the pixel unit detected to have an excessively high charging current to avoid damage and ensure safe operation of the pixel unit.

[0068] In this embodiment, brightness detection means monitoring the brightness of each pixel unit after charging control to determine whether its actual brightness value is lower than a preset target value, thereby identifying low-brightness pixel units.

[0069] In this embodiment, the brightness information refers to data generated based on the brightness detection results of all columns and all pixel units, reflecting the brightness distribution and the status of low-brightness pixels.

[0070] In this embodiment, time compensation means extending the working time or adjusting the charging cycle of low-brightness pixel units to compensate for insufficient brightness and ensure uniformity and consistency of display effects.

[0071] The beneficial effects of the above technical solution are as follows: obtaining the update status information of the organic light-emitting display matrix after charging control can avoid damage to pixel units, correct low brightness problems, significantly improve display reliability, uniformity and brightness control accuracy, and achieve dynamic optimization at the pixel level.

[0072] Embodiment 8: An embodiment of the present invention provides a charging control method for an organic light emitting display matrix, which performs feedback control on the organic light emitting display matrix based on update status information, including: Determine a charging control strategy for a next adjustment specified time period after the adjustment specified time period based on all update sub-state information in the update state information; Adjusting the charging control strategy for the next adjustment specified time period after the adjustment specified time period based on the overcharge information and the brightness information in the update status information; Based on the charging control strategy for the next adjustment specified time period after the adjusted adjustment specified time period, feedback control is performed on the organic light emitting display matrix.

[0073] In this embodiment, based on all updated sub-state information in the updated state information (including the brightness value, charging voltage, charging state and load state of the pixel), a preliminary charging control strategy suitable for the next adjustment time period is designed to ensure that the charging parameters of the pixel unit match the actual needs.

[0074] In this embodiment, based on the overcharge information and the brightness information, the preliminary strategy is optimized to ensure that the overcharge problem can be avoided and the insufficient brightness can be compensated in the next cycle.

[0075] In this embodiment, in the next adjustment time period, the adjusted charging control strategy is dynamically applied to perform real-time monitoring and feedback adjustment on the pixel units to optimize the overall performance of the display matrix, and continuously correct the charging and brightness states to form a closed-loop control system.

[0076] The beneficial effects of the above technical solution are as follows: feedback control of the organic light-emitting display matrix based on the updated status information can realize pixel-level charging and brightness optimization, achieve closed-loop regulation, improve the energy efficiency, reliability and display uniformity of the display matrix, and ensure stable high-quality display effects.

[0077] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0078] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A charging control method for an organic light emitting display matrix, characterized in that: include: 101: monitoring the real-time status information of the organic light emitting display matrix in real time, and obtaining the target brightness information of the organic light emitting display matrix; 102: Determine a charging control strategy of the organic light emitting display matrix within an adjustment time period based on the real-time state information and target brightness information of the organic light emitting display matrix; 103: Controlling charging of the organic light emitting display matrix within the adjustment time period based on the charging control strategy; 104 : Acquire update status information of the organic light emitting display matrix after the charging control is performed, and perform feedback control on the organic light emitting display matrix based on the update status information.

2. The charging control method of an organic light emitting display matrix according to claim 1, characterized in that: Real-time monitoring of the real-time status information of the organic light-emitting display matrix, and obtaining the target brightness information of the organic light-emitting display matrix, including: Real-time monitoring of the real-time sub-state information of each pixel unit in the organic light-emitting display matrix, wherein the real-time sub-state information includes the current brightness value, current charging voltage, current charging state and current load state of the corresponding pixel unit; Determining real-time status information based on real-time sub-state information of all pixel units of the organic light emitting display matrix; A target brightness requirement of each pixel unit in the organic light emitting display matrix is ​​obtained, and target brightness information is determined based on the target brightness requirements of all pixel units in the organic light emitting display matrix.

3. The charging control method of an organic light emitting display matrix according to claim 2, characterized in that: Based on the real-time status information and target brightness information of the organic light emitting display matrix, a charging control strategy of the organic light emitting display matrix within the adjustment time period is determined, including: Determining an expected brightness value of each pixel unit in the organic light emitting display matrix based on a target brightness requirement of each pixel unit in the organic light emitting display matrix; Determining column adjustment information for each column in the organic light emitting display matrix based on real-time sub-state information of all pixel units in each column in the organic light emitting display matrix and expected brightness values; Determine a voltage adjustment function and a current adjustment function for each column in the organic light emitting display matrix based on the column adjustment information of each column in the organic light emitting display matrix; Determining a charging control sub-strategy for each column in the organic light emitting display matrix based on a voltage adjustment function and a current adjustment function for each column in the organic light emitting display matrix; Based on the charging control sub-strategies of all columns in the organic light emitting display matrix, a charging control strategy of the organic light emitting display matrix is ​​determined.

4. The charging control method of an organic light emitting display matrix according to claim 3, characterized in that: Based on the column adjustment information of each column in the organic light emitting display matrix, determining the voltage adjustment function and the current adjustment function of each column in the organic light emitting display matrix includes: Determining a voltage adjustment function for each column in the organic light emitting display matrix based on column adjustment information for each column in the organic light emitting display matrix; ； ； ； ； in, represents the voltage adjustment function of the jth column of the organic light emitting display matrix at the tth time within the adjustment time period, represents the charging efficiency coefficient, represents the proportional term of the voltage regulation function, represents the integral term of the voltage regulation function, represents the differential term of the voltage regulation function, represents the proportional gain parameter, represents the integral gain parameter, represents the differential gain parameter, represents the brightness value-charge conversion coefficient, T represents the adjustment time period, N1 represents the number of rows of the organic light emitting display matrix, N2 represents the number of columns of the organic light emitting display matrix, represents the expected brightness value of the pixel unit in the i-th row and j-th column of the organic light emitting display matrix at the t-th time within the adjustment time period, represents the current brightness value of the pixel unit in the i-th row and j-th column of the organic light emitting display matrix at the t-th time within the adjustment time period, represents the maximum column allowable power of the jth column of the organic light emitting display matrix, represents the real-time charging voltage of the jth column of the organic light emitting display matrix, represents the equivalent resistance of the load of the jth column of the organic light emitting display matrix, represents the power of the jth column of the organic light emitting display matrix at the tth moment within the adjustment time period, represents the average power of all columns of the organic light emitting display matrix at the tth moment within the adjustment time period, represents the response time parameter of the jth column of the organic light emitting display matrix, represents the power balance coefficient, represents the power variation coefficient, Indicates the time compensation coefficient; Determining a current adjustment function for each column in the organic light emitting display matrix based on column adjustment information for each column in the organic light emitting display matrix; ； Wherein, Tt represents the time of moment t within the adjustment time period, Indicates the maximum comprehensive allowable power of the organic light emitting display matrix.

5. The charging control method of an organic light emitting display matrix according to claim 1, characterized in that: The organic light emitting display matrix is ​​charged and controlled within an adjustment time period based on a charging control strategy, including: Based on the charging control sub-strategy of each column of the organic light emitting display matrix within the adjustment time period, charging control is performed on all pixel units in each column of the organic light emitting display matrix respectively.

6. The charging control method of an organic light emitting display matrix according to claim 1, characterized in that: The updated status information includes updated sub-status information, overcharge information and brightness information of all pixel units in the organic light-emitting display matrix, wherein the updated sub-status information includes the updated brightness value, updated charging voltage, updated charging status and updated load status of the corresponding pixel unit in the next adjusted specified time period after the adjusted specified time period.

7. The charging control method of an organic light emitting display matrix according to claim 6, characterized in that: Acquire the updated status information of the organic light emitting display matrix after charging control, including: After the charging control is performed, an overcharge detection is performed on each pixel unit in each column of the organic light emitting display matrix to determine whether there is an excessively high charging current; overcharge information is determined based on the overcharge detection and judgment results of all pixel units in all columns of the organic light emitting display matrix, and high charging restrictions are performed on pixel units with high charging currents; After charging control, brightness detection is performed on each pixel unit in each column of the organic light emitting display matrix to determine whether there is a low-brightness pixel unit, brightness information is determined based on the brightness detection and judgment results of all pixel units in all columns in the organic light emitting display matrix, and time compensation is performed on the low-brightness pixel unit.

8. The charging control method of an organic light emitting display matrix according to claim 7, characterized in that: Feedback control of an organic light emitting display matrix is ​​performed based on update status information, including: Determine a charging control strategy for a next adjustment specified time period after the adjustment specified time period based on all update sub-state information in the update state information; Adjusting the charging control strategy for the next adjustment specified time period after the adjustment specified time period based on the overcharge information and the brightness information in the update status information; Based on the charging control strategy for the next adjustment specified time period after the adjusted adjustment specified time period, feedback control is performed on the organic light emitting display matrix.

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