Display module parameter adjustment method and system, display module, display device

Abstract

A parameter adjustment method for a display module (110). The display module (110) is capable of operating in a low-frequency driving mode, which includes multiple low-frequency cycles. Each low-frequency cycle includes a refresh frame (1F(1)) and at least one hold frame (1F(2)). The parameter adjustment method includes: setting an initial value (Td0) of the light emission delay time (Td) and multiple specified gray levels (S100); the light emission delay time (Td) is the time difference between the start of the charging phase (P2) and the start of the light emission phase (P3) of a frame. Based on the initial value (Td0) of the light emission delay time (Td), the light emission delay time (Td) is adjusted stepwise until the adjusted light emission delay time exceeds a preset range of the light emission delay time (Td), thereby obtaining multiple light emission delay times within the preset range of the light emission delay time (Td) (S200). At each light emission delay time (Td), multiple flicker values ​​of the display module (110) at the multiple specified gray levels are obtained (S300). Based on multiple flicker values ​​corresponding to multiple light emission delay times, a preferred light emission delay time is determined from the multiple light emission delay times (S400).

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a method for adjusting the parameters of a display module, an electronic device, a system for adjusting the parameters of a display module, a display module, a display device, a computer-readable storage medium, and a computer program product. Background Technology

[0002] Active matrix organic light-emitting diodes (ALEDs) matrix organic light AMOLED (Amphiluminated Discharge Photovoltaic) display modules are widely used in smart products such as mobile phones, televisions, and laptops due to their advantages such as self-illumination, low power consumption, wide viewing angle, fast response speed, and high contrast. Furthermore, AMOLED display modules are lightweight, thin, and bend-resistant, making them a key research focus for many scholars both domestically and internationally. Summary of the Invention

[0003] On the one hand, a method for adjusting the parameters of a display module is provided. The display module is capable of operating in a low-frequency drive mode, which includes multiple low-frequency cycles, and each low-frequency cycle includes a refresh frame and at least one hold frame.

[0004] The parameter adjustment method includes: setting an initial value for the light emission delay time and multiple specified gray levels; the light emission delay time is the time difference between the start of the charging phase and the start of the light emission phase of one frame. Based on the initial value of the light emission delay time, the light emission delay time is adjusted in steps until the adjusted light emission delay time exceeds a preset range, resulting in multiple light emission delay times within the preset range. At each light emission delay time, multiple flicker values ​​of the display module at the multiple specified gray levels are obtained. Based on the multiple flicker values ​​corresponding to the multiple light emission delay times, a preferred light emission delay time is determined from the multiple light emission delay times.

[0005] In some embodiments, acquiring multiple flicker values ​​of the display module at multiple specified gray levels under each of the light emission delay times includes: setting an initial value for a first sub-initialization signal; the first sub-initialization signal is an initialization signal received by the light-emitting device during the refresh frame. Based on the initial value of the first sub-initialization signal, the first sub-initialization signal is adjusted in steps until the adjusted first sub-initialization signal exceeds a preset range of the first sub-initialization signal, resulting in multiple first sub-initialization signals within the preset range of the first sub-initialization signal; the number of multiple light emission delay times is M, the number of multiple first sub-initialization signals is N, and the M light emission delay times and N first sub-initialization signals constitute M×N first parameter combinations, each first parameter combination including one light emission delay time and one first sub-initialization signal. Under each of the M×N first parameter combinations, multiple flicker values ​​of the display module at multiple specified gray levels are acquired.

[0006] In some embodiments, a set of flicker values ​​corresponds to a first parameter combination. Determining a preferred light emission delay time from the multiple light emission delay times based on the multiple flicker values ​​corresponding to the multiple light emission delay times includes: determining a target light emission delay time corresponding to each first sub-initialization signal from M light emission delay times, obtaining multiple target light emission delay times; the target light emission delay time is the light emission delay time corresponding to the set of flicker values ​​with the highest convergence among the M sets of flicker values ​​corresponding to the first sub-initialization signal under the M light emission delay times. A preferred first sub-initialization signal is determined; the preferred first sub-initialization signal is one of the N first sub-initialization signals. The target light emission delay time corresponding to the preferred first sub-initialization signal is determined as the preferred light emission delay time.

[0007] In some embodiments, determining a preferred first sub-initialization signal from N first sub-initialization signals includes: acquiring a plurality of second sub-initialization signals and determining one of the plurality of second sub-initialization signals as the preferred second sub-initialization signal; the second sub-initialization signal is the initialization signal received by the holding frame light-emitting device. Based on the preferred second sub-initialization signal, N flicker values ​​of a target grayscale corresponding to the N first sub-initialization signals are acquired, wherein the target grayscale is one of a plurality of specified grayscales. The first sub-initialization signal corresponding to the smallest flicker value among the N flicker values ​​is determined as the preferred first sub-initialization signal.

[0008] In some embodiments, obtaining a plurality of second sub-initialization signals and determining one of the plurality of second sub-initialization signals as the preferred second sub-initialization signal includes: setting an initial value for the second sub-initialization signal; adjusting the second sub-initialization signal stepwise based on the initial value of the second sub-initialization signal until the adjusted second sub-initialization signal exceeds a preset range of the second sub-initialization signal, thereby obtaining a plurality of second sub-initialization signals within the preset range of the second sub-initialization signal; the number of the plurality of first sub-initialization signals is N, the number of the plurality of second sub-initialization signals is K, and the N first sub-initialization signals and the K second sub-initialization signals form N×K second parameter combinations, wherein a second parameter combination includes one first sub-initialization signal and one second sub-initialization signal. Under one of the plurality of target emission delay times and each of the N×K second parameter combinations, a specified gray level is selected as the target gray level from the plurality of specified gray levels; the difference between the maximum and minimum flicker values ​​of the target gray level under any of the N first sub-initialization signals corresponding to any second sub-initialization signal is within a first preset threshold range; and / or, in any second parameter combination, the flicker value is within a second preset threshold range. From the plurality of second sub-initialization signals, the second sub-initialization signal with the largest range of flicker values ​​of the display module under the target gray level is found and selected as the preferred second sub-initialization signal.

[0009] In some embodiments, acquiring a plurality of second sub-initialization signals and determining one of the plurality of second sub-initialization signals as a preferred second sub-initialization signal includes: setting an initial value for the second sub-initialization signal and selecting a specified grayscale level from the plurality of specified grayscale levels as a target grayscale level. Based on the initial value of the second sub-initialization signal, the second sub-initialization signal is adjusted in steps until the adjusted second sub-initialization signal exceeds a preset range of the second sub-initialization signal, thereby obtaining a plurality of second sub-initialization signals within the preset range of the second sub-initialization signal; the number of the plurality of first sub-initialization signals is N, the number of the plurality of second sub-initialization signals is K, and the N first sub-initialization signals and K second sub-initialization signals form N×K second parameter combinations, each second parameter combination including one first sub-initialization signal and one second sub-initialization signal. Based on a target emission delay time among the plurality of target emission delay times, under each of the N×K second parameter combinations, a plurality of flicker values ​​of the display module at the target grayscale level are acquired. From the plurality of second sub-initialization signals, the second sub-initialization signal corresponding to the minimum flicker value of the display module at the target gray level is selected as the preferred second sub-initialization signal.

[0010] In some embodiments, determining a preferred light-emitting delay time from the plurality of light-emitting delay times based on the plurality of flicker values ​​corresponding to the plurality of light-emitting delay times includes: determining the light-emitting delay time corresponding to the minimum flicker value of the display module at each specified grayscale level under the plurality of light-emitting delay times as a target light-emitting delay time. When there is only one target light-emitting delay time, that target light-emitting delay time is determined as the preferred light-emitting delay time. When there are multiple target light-emitting delay times, one of the multiple target light-emitting delay times is determined as the preferred light-emitting delay time; the number of minimum flicker values ​​corresponding to the preferred light-emitting delay time is greater than or equal to the number of minimum flicker values ​​corresponding to the other target light-emitting delay times.

[0011] In some embodiments, the parameter adjustment method further includes: setting an initial value for a first sub-initialization signal; the first sub-initialization signal is an initialization signal received by the light-emitting device in the refresh frame. Based on the initial value of the first sub-initialization signal, the first sub-initialization signal is adjusted in steps until the adjusted first sub-initialization signal exceeds a preset range of the first sub-initialization signal, thereby obtaining a plurality of first sub-initialization signals within the preset range of the first sub-initialization signal; the number of the plurality of first sub-initialization signals is N.

[0012] An initial value is set for the second sub-initialization signal; the second sub-initialization signal is the initialization signal received by the holding frame light-emitting device. Based on the initial value of the second sub-initialization signal, the second sub-initialization signal is adjusted in steps until the adjusted second sub-initialization signal exceeds a preset range of the second sub-initialization signal, resulting in multiple second sub-initialization signals within the preset range of the second sub-initialization signal; the number of the multiple second sub-initialization signals is K; N first sub-initialization signals and K second sub-initialization signals form N×K second parameter combinations, and one second parameter combination includes one first sub-initialization signal and one second sub-initialization signal.

[0013] Under the preferred emission delay time and for each of the N×K second parameter combinations, multiple flicker values ​​of the display module at the multiple specified gray levels are obtained. From the multiple specified gray levels, one specified gray level is selected as the target gray level; the difference between the maximum and minimum flicker values ​​of the target gray level under any of the N first sub-initialization signals corresponding to any second sub-initialization signal is within a first preset threshold range; and / or, in any second parameter combination, the flicker value is within a second preset threshold range. From the multiple second sub-initialization signals, the second sub-initialization signal with the largest range of flicker values ​​of the display module at the target gray level is identified as the preferred second sub-initialization signal.

[0014] In some embodiments, the first preset threshold range is 10dB to 15dB; and / or, the second preset threshold range is -40dB to -70dB.

[0015] In some embodiments, the parameter adjustment method further includes: setting an initial value for a first sub-initialization signal; the first sub-initialization signal is an initialization signal received by the refresh frame light-emitting device. Based on the initial value of the first sub-initialization signal, the first sub-initialization signal is adjusted in steps until the adjusted first sub-initialization signal exceeds a preset range of the first sub-initialization signal, resulting in multiple first sub-initialization signals within the preset range of the first sub-initialization signal; the number of the multiple first sub-initialization signals is N. Setting an initial value for a second sub-initialization signal, and selecting a specified gray level from the multiple specified gray levels as a target gray level; the second sub-initialization signal is an initialization signal received by the hold frame light-emitting device.

[0016] Based on the initial value of the second sub-initialization signal, the second sub-initialization signal is adjusted in steps until the adjusted second sub-initialization signal exceeds a preset range, resulting in multiple second sub-initialization signals within the preset range; the number of these multiple second sub-initialization signals is K; N first sub-initialization signals and K second sub-initialization signals form N×K second parameter combinations, each second parameter combination including one first sub-initialization signal and one second sub-initialization signal. Under the preferred emission delay time and for each of the N×K second parameter combinations, multiple flicker values ​​of the display module at the target grayscale are obtained.

[0017] From the plurality of second sub-initialization signals, the second sub-initialization signal corresponding to the minimum flicker value of the display module at the target gray level is selected as the preferred second sub-initialization signal.

[0018] In some embodiments, the parameter adjustment method further includes: based on the preferred second sub-initialization signal, determining the first sub-initialization signal corresponding to the minimum flicker value of the target grayscale of the display module under the plurality of first sub-initialization signals as the preferred first sub-initialization signal.

[0019] In some embodiments, the parameter adjustment method further includes: setting an initial value for a data hold signal; the data hold signal is a data signal received by the data signal terminal of the pixel driving circuit in the hold frame. Based on the initial value of the data hold signal, the data hold signal is adjusted in steps until the adjusted data hold signal exceeds a preset range, thereby obtaining multiple data hold signals within the preset range. Under the preferred emission delay time, the preferred first sub-initialization signal, the preferred second sub-initialization signal, and each data hold signal, the flicker value of the display module at the target grayscale is obtained. The data hold signal corresponding to the minimum flicker value at the target grayscale under the multiple data hold signals is determined as the preferred data hold signal.

[0020] In some embodiments, the preset range of the first sub-initialization signal is -1V to -6V.

[0021] In some embodiments, the preset range of the second sub-initialization signal is -1V to -6V.

[0022] In some embodiments, the preset range of the data holding signal is 1V to 8V.

[0023] In some embodiments, the preset range of the light emission delay time is 0 to 30 line scan periods.

[0024] On the other hand, an electronic device is provided, including a processor and a memory, the memory storing computer program instructions that, when executed on the processor, cause the processor to perform one or more steps in the parameter adjustment method described above.

[0025] In another aspect, a parameter adjustment system for a display module is provided. The parameter adjustment system includes a processor, a testing device, and a detection device. The processor is configured to perform one or more steps in the parameter adjustment method described above. The testing device is coupled to the processor; the testing device is configured to issue control commands for controlling the display module's display based on a first sub-initialization signal, a second sub-initialization signal, a light emission delay time, and a data hold signal from the processor. The detection device is coupled to the processor; the detection device is configured to measure the flicker value when the display module is displaying and send the flicker value to the processor.

[0026] In another aspect, a display module is provided. The display module includes a display panel and a driver chip; the driver chip stores a preferred light emission delay time, which is obtained according to the parameter adjustment method described in any of the above embodiments; the driver chip is configured to generate a light emission signal according to the preferred light emission delay time and transmit the light emission signal to the display panel.

[0027] In some embodiments, the driver chip further stores at least one of a preferred first sub-initialization signal, a preferred second sub-initialization signal, and a preferred data holding signal; the preferred first sub-initialization signal is obtained according to the parameter adjustment method described in the above embodiments, the preferred second sub-initialization signal is obtained according to the parameter adjustment method described in the above embodiments, and the preferred data holding signal is obtained according to the parameter adjustment method described in the above embodiments.

[0028] In another aspect, a display device is provided. The display device includes the display module described in any of the above embodiments.

[0029] In another aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores computer program instructions that, when executed on a processor, cause the processor to perform one or more steps of the parameter adjustment method described in any of the above embodiments.

[0030] In another aspect, a computer program product is provided. The computer program product is stored on a non-transitory computer-readable storage medium. The computer program product includes computer program instructions that, when executed on a computer (e.g., a display device), cause the computer to perform the parameter adjustment method described in any of the above embodiments.

[0031] In another aspect, a computer program is provided. When the computer program is executed on a computer (e.g., a display device), the computer program causes the computer to perform the parameter adjustment method for the display module as described in any of the above embodiments. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0033] Figure 1This is a structural diagram of a display device according to some embodiments; Figure 2 This is a structural diagram of a display module according to some embodiments; Figure 3 This is a structural diagram of a display panel according to some embodiments; Figure 4 for Figure 3 A sectional view along section line AA'. Figure 5 A circuit diagram of a sub-pixel according to some embodiments; Figure 6 This is a timing diagram of a pixel driving circuit according to some embodiments; Figure 7 This is another timing diagram of a pixel driving circuit according to some embodiments; Figure 8 This is a structural block diagram of a parameter adjustment system and a display module according to some embodiments; Figures 9-18 This is a flowchart of a parameter adjustment method for a display module according to some embodiments; Figure 19 This is a graph showing flicker values ​​of a display module according to some embodiments under multiple light emission delay times, multiple first sub-initialization signals, and multiple specified gray levels. Figure 20 This is a graph showing flicker values ​​of a display module according to some embodiments at multiple light emission delay times and multiple specified gray levels; Figure 21 This is a data graph of flicker values ​​of a display module according to some embodiments under multiple first sub-initialization signals, multiple second sub-initialization signals, and multiple specified gray levels; Figure 22 This is a graph showing the flicker values ​​of a display module according to some embodiments under multiple first sub-initialization signals and multiple second sub-initialization signals; Figure 23 This is a graph showing flicker values ​​of a display module under multiple data hold signals and a target grayscale, according to some embodiments. Detailed Implementation

[0034] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0035] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular "comprises" and the present participle "comprising," are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0036] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0037] In describing some embodiments, the terms "coupled" and "connected," and their derivative expressions, may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact with each other. Similarly, the term "coupled" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact. However, the terms "coupled" or "communicatively coupled" may also refer to two or more components that do not have direct contact with each other but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the content of this document.

[0038] "At least one of A, B and C" has the same meaning as "at least one of A, B or C", both including the following combinations of A, B and C: only A, only B, only C, combinations of A and B, combinations of A and C, combinations of B and C, and combinations of A, B and C.

[0039] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0040] The use of “applies to” or “configured to” in this article implies an open and inclusive language that does not preclude applicability to or configuration to devices that perform additional tasks or steps.

[0041] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0042] This document describes exemplary embodiments with reference to cross-sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and regions is enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. For example, etched regions shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the regions of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0043] This disclosure provides a method for adjusting the parameters of a display module, an electronic device, a system for adjusting the parameters of a display module, a display module, a display device, a computer-readable storage medium, and a computer program product. The following describes the method for adjusting the parameters of a display module, the electronic device, the system for adjusting the parameters of a display module, the display module, the display device, the computer-readable storage medium, and the computer program product.

[0044] like Figure 1 As shown, some embodiments of this disclosure provide a display device 100, which can be any device that displays text or images, whether in motion (e.g., video) or stationary (e.g., still images). More specifically, the embodiments are contemplated to be implemented in or associated with a variety of electronic devices, such as (but not limited to) mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automotive displays (e.g., odometer displays, etc.), navigators, cockpit controllers and / or displays, displays of camera views (e.g., displays of rearview cameras in vehicles), electronic photographs, electronic billboards or signs, projectors, architectural structures, packaging and aesthetic structures (e.g., displays of images of a piece of jewelry), etc.

[0045] In some embodiments, the display device 100 includes a display module 110 and a housing 130.

[0046] In some embodiments, such as Figure 2 As shown, the display module 110 includes a display panel 10, a flexible circuit board 20, a driver chip, and other electronic components.

[0047] The display panel 10 mentioned above includes various types, and can be selected and set according to actual needs.

[0048] For example, the display panel 10 can be an electroluminescent display panel, such as an organic light-emitting diode (OLED) display panel, a quantum dot light-emitting diode (QLED) display panel, etc. This disclosure does not specifically limit the specific display panel.

[0049] The following description uses the above-mentioned display panel 10 as an OLED display panel as an example to illustrate some embodiments of this disclosure.

[0050] In some embodiments, such as Figure 2 and Figure 3 As shown, the display panel 10 has a display area A and a peripheral area B disposed on at least one side of the display area. Figure 2 and Figure 3 The illustration uses the surrounding area B surrounding the display area A as an example.

[0051] In this design, display area A is the area for displaying images, and display area A is configured to set sub-pixels P. Peripheral area B is the area where images are not displayed, and peripheral area B is configured to set display driving circuitry, such as gate driving circuitry and source driving circuitry.

[0052] For example, such as Figure 2 and Figure 3 As shown, the display panel 10 includes a plurality of sub-pixels P disposed on one side of the substrate 1 and located in the display area A. The plurality of sub-pixels P are arranged in multiple rows and columns, with each row including a plurality of sub-pixels P arranged along a first direction X, and each column including a plurality of sub-pixels P arranged along a second direction Y. Specifically, each row of sub-pixels P may include a plurality of sub-pixels P, and each column of sub-pixels P may include a plurality of sub-pixels P.

[0053] Here, the first direction X and the second direction Y intersect each other. The angle between the first direction X and the second direction Y can be selected and set according to actual needs. For example, the angle between the first direction X and the second direction Y can be 85°, 89° or 90°, etc.

[0054] Among them, such as Figure 3 and Figure 4As shown, sub-pixel P includes a light-emitting device 11 and a pixel driving circuit 12 disposed on substrate 1. The pixel driving circuit 12 includes a plurality of thin-film transistors 121. Each thin-film transistor 121 includes an active layer 1211, a source 1212, a drain 1213, and a gate 1214. The source 1212 and drain 1213 are respectively in contact with the active layer 1211. Along a direction perpendicular to and away from substrate 1, the light-emitting device 11 includes a first electrode layer 111, a light-emitting functional layer 112, and a second electrode layer 113 disposed sequentially. The first electrode layer 111 is electrically connected to the source 1212 or drain 1213 of one of the plurality of thin-film transistors 121 that serves as a driving transistor. Figure 4 The diagram illustrates the electrical connection between the first electrode layer 111 and the source 1212 of the thin-film transistor 121.

[0055] It should be noted that the source 1212 and drain 1213 mentioned above are interchangeable, that is... Figure 4 In this context, 1212 represents the drain electrode. Figure 4 In this context, 1213 represents the source pole.

[0056] In some embodiments, the light-emitting functional layer 112 includes only the light-emitting layer. In other embodiments, in addition to the light-emitting layer, the light-emitting functional layer 112 also includes at least one of an electron transport layer (ETL), an electron injection layer (EIL), a hole transport layer (HTL), and a hole injection layer (HIL).

[0057] In some embodiments, such as Figure 4 As shown, the display panel 10 also includes a pixel defining layer 114, which includes multiple opening areas, and a light-emitting device 11 is disposed in one of the opening areas.

[0058] In some embodiments, such as Figure 4 As shown, the display panel 10 also includes a first planarization layer 115 disposed between the thin-film transistor 121 and the first electrode layer 111.

[0059] In some embodiments, such as Figure 4 As shown, the display panel 10 also includes an encapsulation layer 2 disposed on the side of the light-emitting device 11 away from the substrate 1. The encapsulation layer 2 can be an encapsulation film or an encapsulation cover plate.

[0060] In some embodiments, such as Figure 2 and Figure 3As shown, the display panel 10 may further include multiple gate lines GL and multiple data lines DL disposed on one side of the substrate 1 and located in the display area A. The multiple gate lines GL extend along a first direction X, and the multiple data lines DL extend along a second direction Y.

[0061] For example, sub-pixels P arranged in a row along the first direction X can be called row sub-pixels P, and sub-pixels P arranged in a column along the second direction Y can be called column sub-pixels P. Row sub-pixels P can be electrically connected to a gate line GL, and column sub-pixels P can be electrically connected to a data line DL.

[0062] One gate line GL can be electrically connected to multiple pixel driving circuits 12 in the same row of sub-pixels P, and one data line DL can be electrically connected to multiple pixel driving circuits 12 in the same column of sub-pixels P.

[0063] In pixel driving circuits, the scan transistor and reset transistor are off most of the time, requiring low leakage current; the switching transistor and drive transistor are on most of the time, requiring high charge mobility. Combining the advantages of indium gallium zinc oxide thin film transistors (TFTs) in terms of high stability and low manufacturing cost at low refresh rates, and the advantages of low temperature polycrystalline silicon TFTs in terms of high charge mobility, low temperature polycrystalline oxide (LTPO) pixel driving circuits were developed.

[0064] In the LTPO pixel driving circuit, the scanning transistor and reset transistor use N-type indium gallium zinc oxide TFTs, while the switching transistor and driving transistor use low-temperature polycrystalline silicon TFTs. This allows for high charge mobility, stability, and scalability at a low production cost.

[0065] The pixel driving circuit described above has various structures, which can be selected and configured according to actual needs. The following section discusses... Figure 5 and Figure 6 Taking the LTPO pixel driving circuit, which includes 8 transistors T and 1 capacitor CST, as an example, the structure and working process of the sub-pixel P are illustrated.

[0066] For example, such as Figure 5As shown, the pixel driving circuit 12 includes eight transistors T and one capacitor CST. The control electrodes of the first transistor T1 and the seventh transistor T7 are both coupled to the reset signal terminal RESET, the control electrodes of the second transistor T2 and the fourth transistor T4 are both coupled to the first scan signal terminal GATE1, and the control electrode of the eighth transistor T8 is coupled to the second scan signal terminal GATE2. The first transistor T1 and the seventh transistor T7 are both reset transistors, and the second transistor T2, the fourth transistor T4, and the eighth transistor T8 are scan transistors. The control electrode of the third transistor T3 is coupled to one end of the capacitor CST, and the control electrodes of the fifth transistor T5 and the sixth transistor T6 are both coupled to the enable signal terminal EM. The third transistor T3 is a driving transistor, and the fifth transistor T5 and the sixth transistor T6 are switching transistors. The first transistor T1, the second transistor T2, the third transistor T3, the fourth transistor T4, the fifth transistor T5, the sixth transistor T6, and the seventh transistor T7 are all P-type low-temperature polysilicon TFTs, and the eighth transistor T8 is an N-type indium gallium zinc oxide TFT.

[0067] One frame period ( Figure 6 (Illustrated in 1F) includes a reset phase P1, a charging phase P2, and a light-emitting phase P3.

[0068] During the reset phase P1, both the first transistor T1 and the seventh transistor T7 are turned on under the control of the reset signal Reset from the reset signal terminal RESET, and the eighth transistor T8 is turned on under the control of the second scan signal Gate2 from the second scan signal terminal GATE2. The first node N1 is reset to the voltage of the initialization voltage signal from the first initialization signal terminal VINT1, and the second node N2 is reset to the voltage of the initialization voltage signal from the second initialization signal terminal VINT2.

[0069] During the charging phase P2, the second transistor T2 and the fourth transistor T4 are both turned on under the control of the first scan signal Gate1 from the first scan signal terminal GATE1, the eighth transistor T8 is turned on under the control of the second scan signal Gate2 from the second scan signal terminal GATE2, the third transistor T3 is turned on under the control of the voltage of the first node N1, and the capacitor CST is written with the data signal Data from the data signal terminal DATA.

[0070] During the light-emitting stage P3, the fifth transistor T5 and the sixth transistor T6 are both turned on under the control of the enable signal Em at the enable signal terminal EM, and the third transistor T3 is turned on under the control of the first node N1 to output a drive current signal to the light-emitting device.

[0071] To reduce power consumption, the display panel 10 has a high-frequency driving mode and a low-frequency driving mode, where the low-frequency mode can be used for displaying static images. In the low-frequency driving mode, one low-frequency cycle includes one refresh frame and multiple hold frames. It should be noted that both a refresh frame and a hold frame can be one frame cycle as described above. Figure 7 The following example illustrates the concept of a refresh frame and a hold frame.

[0072] However, in low-frequency drive mode, the refresh rate of the display panel is reduced, making the human eye more sensitive to the flickering of the image displayed on the display panel, thus causing the human eye to perceive the flickering of the image displayed on the display panel.

[0073] Research has found that, see Figure 6 and Figure 7 The light emission delay time Td (the time difference between the start of the charging phase and the start of the light emission phase in one frame), the voltage VINT2 of the anode of the light-emitting device, and the holding voltage V received by the source of the driving transistor T3 from the data signal terminal in holding frame 1F (2) keep These parameters affect the flicker level of the screen. Specifically, to obtain a screen with lower flicker levels, different wiring arrangements of the display panel 10 (see...) Figure 2 The parameters required may not be exactly the same.

[0074] Here, as Figure 5 , Figure 6 and Figure 7 As shown, the light emission delay time Td is also the characteristic recovery time of the driving transistor T3. The length of this characteristic recovery time affects the state of the driving transistor T3, and thus affects the brightness of the light emitted by the light-emitting device 11. The voltage VINT2 of the anode of the light-emitting device 11 within a frame (including the initialization signal received by the light-emitting device 11 in refresh frame 1F (1), i.e., the first sub-initialization signal VINT) 2-1 The initialization signal received by the light-emitting device 11 in frame 1F (2), namely the second sub-initialization signal VINT. 2-2 All of these factors will affect the turn-on speed of the light-emitting device 11, and thus the final brightness of the light-emitting device 11. The holding voltage V received from the data signal terminal in holding frame 1F(2) keep This will also affect the state of the driving transistor T3, and thus affect the brightness of the light emitted by the light-emitting device 11.

[0075] Based on this, see Figure 8The display module 110 provided in this embodiment includes a driver chip 30 that stores a preferred light emission delay time PR Td. The driver chip 30 is configured to generate a light emission signal according to the preferred light emission delay time PR Td and transmit the light emission signal to the display panel 10 to drive the display panel 10 to emit light. In this case, the fluctuation of the brightness of the image displayed by the display panel 10 in the low-frequency driving mode can be reduced, thereby reducing the flicker value of the display panel 10 and improving the problem of flickering of the image displayed by the display panel 10 perceived by the human eye.

[0076] The preferred light emission delay time PR Td can be obtained according to the parameter adjustment method of the display module 110 provided in the embodiments of this disclosure, which can be referred to below for details, and will not be repeated here.

[0077] In some embodiments, the driver chip 30 also stores a preferred first sub-initialization signal PR VINT. 2-1 Preferred second sub-initialization signal PR VINT 2-2 and preferred data hold signal PRV keep At least one of them. For example, the driver chip 30 also stores a preferred first sub-initialization signal PR VINT. 2-1 Preferred second sub-initialization signal PR VINT 2-2 and preferred data hold signal PRV keep In this case, the driver chip 30 is configured to operate according to the preferred light emission delay time PRTd and the preferred first sub-initialization signal PR VINT. 2-1 Preferred second sub-initialization signal PR VINT 2-2 and preferred data hold signal PRV keep This generates a light emission signal, which is then transmitted to the display panel 10 to drive the display panel 10 to emit light. In this case, the preferred first sub-initialization signal PR VINT can be used. 2-1 Preferred second sub-initialization signal PR VINT 2-2 By controlling the turn-on speed of the light-emitting device 11, the brightness of the final light-emitting device 11 is adjusted to further reduce the flicker of the display panel 10 and improve the problem of flickering of the image displayed on the display panel 10 as perceived by the human eye. Furthermore, the preferred data holding signal PR V can be used... keep By controlling the voltage at the source of the driving transistor T3 and adjusting the state of the driving transistor T3, the brightness of the final light-emitting device 11 is adjusted, thereby further reducing the flicker of the display panel 10 and improving the problem of flickering of the image displayed on the display panel 10 as perceived by the human eye.

[0078] Among them, the preferred first sub-initialization signal PR VINT mentioned above 2-1 Preferred second sub-initialization signal PR VINT 2-2 and preferred data hold signal PRV keep All parameters can be obtained according to the parameter adjustment method of the display module 110 provided in the embodiments of this disclosure. For details, please refer to the following text, which will not be repeated here.

[0079] The parameter adjustment method of the display module 110 provided in some embodiments of this disclosure is described in the following references. Figure 7 and Figure 8 The display module 110 is capable of operating in a low-frequency drive mode, which includes multiple low-frequency cycles, one of which includes a refresh frame 1F (1) and at least one hold frame 1F (2).

[0080] Based on this, such as Figure 9 As shown, the parameter adjustment method includes S100~S400.

[0081] S100: Sets the initial value Td0 of the emission delay time and multiple specified gray levels 1~S.

[0082] In the above steps, S ≥ 1, and S is a positive integer. The initial value of the emission delay time Td0 can be 0 to 30 line scan periods. For example, the initial value of the emission delay time Td0 can be any one of 0 line scan periods, 10 line scan periods, and 30 line scan periods. Multiple specified gray levels 1 to S can be selected according to the actual situation, and this disclosure does not limit them. Figure 19 The diagram uses five specified gray levels for illustration.

[0083] It should be noted that one line scan period = 1 second ÷ refresh rate ÷ number of lines scanned. For example, if the refresh rate of the display panel is 120Hz and the number of lines scanned is 1000, then one line scan period is 0.0083ms.

[0084] S200: Based on the initial value Td0 of the emission delay time, the emission delay time Td is adjusted in steps until the adjusted emission delay time Td is reached. m If the emission delay time exceeds the preset range, multiple emission delay times Td0~Td are obtained within the preset range of emission delay time Td. m-1 .

[0085] In the above steps, m ≥ 1, and m is a positive integer. The preset range of the emission delay time Td is 0 to 30 line scan periods. The step-by-step adjustment of the emission delay time Td can be based on the initial value Td0 of the emission delay time, adjusting the emission delay time Td from low to high or from high to low with a first set step value Step1, so that each adjustment yields a emission delay time Td. m Here, the first set step value Step1 can be 1 h (line scan period) to 5 h. For example, the first set step value Step1 can be any one of 1 h, 2 h, 3 h, 4 h and 5 h.

[0086] For example, the initial value of the emission delay time Td0 is 0 line scan periods, and the first set step value Step1 is 1 hour. In this case, the emission delay time Td is adjusted from low to high, with each adjustment being 1 hour, until the adjusted emission delay time Td is reached. m The value is greater than 30h.

[0087] For example, the initial value of the emission delay time Td0 is 30 line scan periods, and the first set step value Step1 is 5 hours. In this case, the emission delay time Td is adjusted from high to low, with each adjustment being 5 hours, until the adjusted emission delay time Td is reached. m The value is less than 0h.

[0088] S300: In each emission delay time Td (Td0~Td) m-1 Under the condition of obtaining multiple flicker values ​​of more than 110 specified gray levels 1 to 2S in the display module, the flicker values ​​are obtained.

[0089] In the above steps, before each step adjustment of the light emission delay time Td, the display module 110 can obtain multiple flicker values ​​at multiple specified gray levels 1 to S under the light emission delay time Td before the adjustment.

[0090] In other words, during the step-by-step adjustment of the light emission delay time Td, multiple flicker values ​​of the corresponding light emission delay time Td before each adjustment are simultaneously acquired at multiple specified gray levels 1 to S, thereby obtaining multiple light emission delay times Td0 to Td0. m-1 Simultaneously, the emission delay time Td (Td0~Td) is obtained. m-1 Under the specified grayscale 1 to 2, the display module 110 displays multiple flicker values ​​at multiple specified grayscale 1 to 2.

[0091] The multiple flicker values ​​of the display module 110 under multiple specified gray levels 1 to S can be the initial value VINT of the first sub-initialization signal of the display module 110. 2-1.0 And multiple blink values ​​under multiple specified gray levels 1~S; or, the display module 110 can be initialized by multiple first sub-initialization signals VINT. 2-1And multiple blink values ​​under multiple specified gray levels 1~S, which can be referred to below for details, and will not be elaborated here. First sub-initialization signal VINT 2-1 This is the initialization signal received by the light-emitting device 11 during the refresh frame.

[0092] S400: Based on multiple emission delay times Td0~Td m-1 The corresponding multiple flicker values ​​range from multiple emission delay times Td0 to Td m-1 The optimal emission delay time PR Td is determined in the process.

[0093] In the above steps, the initial value VINT of the first sub-initialization signal of the display module 110 is obtained. 2-1.0 In the case of multiple flicker values ​​under multiple specified gray levels 1 to S, from multiple emission delay times Td0 to Td m-1 The method for determining the preferred light emission delay time PR Td is compared with the method for acquiring the display module 110 in multiple first sub-initialization signals VINT. 2-1 In the case of multiple flicker values ​​under multiple specified gray levels 1 to S, from multiple emission delay times Td0 to Td m-1 The methods for determining the optimal luminescence delay time PR Td are not the same, and the details can be found in the following text, which will not be elaborated here.

[0094] Here, the preferred light emission delay time PR Td can be stored in the driver chip 30. The driver chip 30 can generate a light emission signal according to the preferred light emission delay time PR Td and transmit the light emission signal to the display panel 10 to drive the display panel 10 to emit light. In this case, the brightness fluctuation of the image displayed by the display panel 10 in the low-frequency driving mode can be reduced, the flicker value of the display panel 10 can be reduced, and the problem of flickering of the image displayed by the display panel 10 perceived by the human eye can be improved.

[0095] In some embodiments, such as Figure 10 As shown, S300 includes S310 to S330.

[0096] S310: Set the initial value VINT of the first sub-initialization signal. 2-1.0 .

[0097] In the above steps, the first sub-initialization signal VINT 2-1 This refers to the initialization signal received by the light-emitting device during the refresh frame. The initial value of the first sub-initialization signal is VINT. 2-1.0 It can be -6V to -1V. For example, the initial value of the first sub-initialization signal is VINT. 2-1.0 It can be any of -1V, -3V, -5V, and -6V.

[0098] S320: Initial value VINT based on the first sub-initialization signal 2-1.0 Step-by-step adjustment of the first sub-initialization signal VINT 2-1 Until the adjusted first sub-initialization signal VINT 2-1.n Exceeding the first sub-initialization signal VINT 2-1 The preset range is obtained from the first sub-initialization signal VINT. 2-1 Multiple first sub-initialization signals VINT within the preset range 2-1.0 ~VINT 2-1.n-1 .

[0099] In the above steps, n ≥ 1, and n is a positive integer. Multiple emission delay times Td0 ~ Td m-1 The number is M, with multiple first sub-initialization signals VINT. 2-1.0 ~VINT 2-1.n-1 The quantity is N, and the emission delay time is M from Td0 to Td. m-1 and N first sub-initialization signals VINT 2-1.0 ~VINT 2-1.n-1 The system consists of M×N combinations of first parameters, each combination including a light emission delay time Td and a first sub-initialization signal VINT. 2-1 .

[0100] In addition, the first sub-initialization signal VINT 2-1 The preset range is -6V to -1V. Specifically, the first sub-initialization signal VINT is adjusted in steps. 2-1 This refers to the initial value VINT based on the first sub-initialization signal. 2-1.0 The first sub-initialization signal VINT is adjusted from low to high or from high to low using the second set step value Step2. 2-1 Each adjustment yields a first sub-initialization signal VINT. 2-1.n Here, the second set step value Step2 can be 0.1V to 0.5V. For example, the second set step value Step2 can be any one of 0.1V, 0.2V, 0.3V, 0.4V and 0.5V.

[0101] For example, the initial value of the first sub-initialization signal is VINT. 2-1.0 The initial voltage is -6V, and the second set step value Step2 is 0.1V. In this case, the first sub-initialization signal VINT is adjusted from low to high. 2-1 Adjust by 0.1V each time until the adjusted first sub-initialization signal VINT is reached. 2-1.n The value is greater than -1V.

[0102] For example, the initial value of the first sub-initialization signal is VINT. 2-1.0 The initial value is -1V, and the second set step value Step2 is 0.5V. In this case, the first sub-initialization signal VINT is adjusted from high to low. 2-1 Adjust by 0.5V each time until the adjusted first sub-initialization signal VINT is reached. 2-1.n The value is less than -6V.

[0103] S330: Under each of the M×N first parameter combinations, obtain multiple flicker values ​​of the display module 110 at multiple specified gray levels 1~S.

[0104] In the above steps, before each step adjustment of the light emission delay time Td, the light emission delay time Td before the adjustment can be obtained, and the display module 110 can be set to N first sub-initialization signals VINT. 2-1 And multiple flicker values ​​under multiple specified gray levels 1 to S.

[0105] In other words, during the step-by-step adjustment of the light emission delay time Td, before each adjustment of the light emission delay time Td, the first sub-initialization signal VINT is first adjusted in a step-by-step manner. 2-1 And adjust the first sub-initialization signal VINT in each step. 2-1 Previously, the first sub-initialization signal VINT before the adjustment was also obtained. 2-1 Below, the display module 110 displays multiple flicker values ​​at multiple specified gray levels 1 to 2, thereby obtaining multiple light emission delay times Td0 to Td0. m-1 At the same time, for each of the M×N combinations of first parameters, the display module 110 obtains multiple flicker values ​​at multiple specified gray levels 1 to S.

[0106] In this context, a set of multiple blink values ​​corresponding to a single first parameter combination constitutes a blink value group. Based on this, such as... Figure 11 As shown, S400 includes S410 to S430.

[0107] S410: From M emission delay times Td0~Td m-1 In this process, the first sub-initialization signal VINT is determined. 2-1 (VINT) 2-1.0 ~VINT 2-1.n-1 The corresponding target emission delay time AM Td.

[0108] In the above steps, the target emission delay time AM Td is the first sub-initialization signal VINT. 2-1 During M emission delay times Td0~Td m-1 The emission delay time Td corresponding to the group of flashing values ​​with the highest convergence in the M groups of flashing values ​​is given.

[0109] For example, such as Figure 19 As shown, the convergence of the flicker value group can be determined by the variance; the smaller the variance, the higher the convergence. For example, when the first sub-initialization signal is VINT... 2-1.0 In the case of +Step2×3, the corresponding target emission delay time AM Td is Td0+Step1×2. Here, Figure 19 The middle cross is VINT 2-1.0 +Step2×3 corresponds to the blinking value.

[0110] S420: From N first sub-initialization signals VINT 2-1.0 ~VINT 2-1.n-1 In the process, the preferred first sub-initialization signal PR VINT is determined. 2-1 .

[0111] In the above steps, the preferred first sub-initialization signal PR VINT is determined. 2-1 So that in S430, the preferred first sub-initialization signal PR VINT can be used. 2-1 The preferred emission delay time PR Td is determined. Specifically, the preferred first sub-initialization signal PR VINT is determined. 2-1 For details, please refer to the following text; this will not be elaborated upon here.

[0112] S430: This will be used in conjunction with the preferred first sub-initialization signal PR VINT. 2-1 The corresponding target emission delay time AM Td is determined to be the preferred emission delay time PR Td.

[0113] In the above steps, the first sub-initialization signal VINT obtained in S410 can be used as a reference. 2-1 Based on the corresponding target emission delay time AM Td, find the preferred first sub-initialization signal PR VINT. 2-1 The corresponding target emission delay time AM Td is used as the preferred emission delay time PR Td.

[0114] In some embodiments, such as Figure 12 As shown, S420 includes S421 to S423.

[0115] S421: Obtain multiple second sub-initialization signals VINT 2-2.0 ~VINT 2-2.k-1 And from this, the preferred second sub-initialization signal PR VINT is determined. 2-2 .

[0116] In the above steps, k ≥ 1, and k is a positive integer. The second sub-initialization signal VINT 2-2This is to maintain the initialization signal received by the frame-holding light-emitting device 11. Specifically, multiple second sub-initialization signals VINT are acquired. 2-2.0 ~VINT 2-1. k -1 And from this, the preferred second sub-initialization signal PR VINT is determined. 2-2 The process is detailed below and will not be elaborated upon here.

[0117] S422: Based on the preferred second sub-initialization signal PR VINT 2-2 Obtain N first sub-initialization signals VINT 2-1.0 ~VINT 2-1.n-1 The corresponding N flashing values ​​of the target grayscale.

[0118] In the above steps, the second sub-initialization signal VINT 2-2 To maintain the initialization signal received by the frame-emitting device 11, the target gray level is one of a plurality of specified gray levels 1 to S. Generally, the second sub-initialization signal PR VINT is preferred. 2-2 Under the condition that the flicker value of the target grayscale meets the requirements, the flicker values ​​of other grayscales among the multiple specified grayscales 1 to S also meet the requirements. Among them, the target grayscale may be different for different line layouts. Here, the target grayscale can be selected according to the actual line layout, can be set directly according to experience values, or can be judged based on multiple flicker values. For details, please refer to the following text, which will not be elaborated here.

[0119] Furthermore, the preferred second sub-initialization signal PR VINT 2-2 Below, N first sub-initialization signals VINT 2-1.0 ~VINT 2-1.n-1 The corresponding N flicker values ​​of the target grayscale can be found among the flicker values ​​acquired during process S4213, in the preferred second sub-initialization signal PR VINT. 2-2 Below, N first sub-initialization signals VINT 2-1.0 ~VINT 2-1.n-1 The corresponding target grayscale has N flashing values, which can be found in the following text and will not be elaborated upon here.

[0120] S423: Set the first sub-initialization signal VINT corresponding to the smallest flashing value among N flashing values. 2-1 The preferred first sub-initialization signal PR VINT is determined to be... 2-1 .

[0121] In the above steps, such as Figure 19 As shown, the preferred second sub-initialization signal PR VINT 2-2 For VINT 2-2.0In the case of + Step3×3, the preferred first sub-initialization signal PR VINT is preferred. 2-1 For VINT 2-1.0 + Step2×2.

[0122] In some embodiments, such as Figure 13 As shown, S421 includes S4211 to S4215.

[0123] S4211: Set the initial value VINT of the second sub-initialization signal. 2-2.0 .

[0124] In the above steps, the initial value VINT of the second sub-initialization signal 2-2.0 It can be -6V to -1V. For example, the initial value of the second sub-initialization signal is VINT. 2-2.0 It can be any of -1V, -3V, -5V, and -6V.

[0125] S4212: Initial value VINT based on the second sub-initialization signal 2-2.0 Step-by-step adjustment of the second sub-initialization signal VINT 2-2 Until the adjusted second sub-initialization signal VINT 2-2. k Exceeding the second sub-initialization signal VINT 2-2 The preset range is obtained by using the second sub-initialization signal VINT. 2-2 Multiple second sub-initialization signals VINT within the preset range 2-2.0 ~VINT 2-1. k -1 .

[0126] In the above steps, k ≥ 1, and k is a positive integer. Multiple first sub-initialization signals VINT. 2-1.0 ~ VINT 2-1.n-1 The number is N, with multiple second sub-initialization signals VINT. 2-2.0 ~VINT 2-1. k -1 The number is K, and there are N first sub-initialization signals VINT. 2-1.0 ~ VINT 2-1.n-1 and K second sub-initialization signals VINT 2-2.0 ~VINT 2-1. k -1 N×K combinations of second parameters are formed, and each combination of second parameters includes a first sub-initialization signal VINT. 2-1 and a second sub-initialization signal VINT 2-2 .

[0127] In addition, the second sub-initialization signal VINT 2-2 The preset range is -6V to -1V. The second sub-initialization signal VINT is adjusted in steps. 2-2This refers to the initial value VINT based on the second sub-initialization signal. 2-2.0 The second sub-initialization signal VINT is adjusted from low to high or from high to low using the third setting step value Step3. 2-2 Each adjustment yields a second sub-initialization signal VINT. 2-2.k Here, the third setting step value Step3 can be 0.1V ~ 0.5V. For example, the third setting step value Step3 can be any one of 0.1V, 0.2V, 0.3V, 0.4V and 0.5V.

[0128] For example, the initial value of the second sub-initialization signal is VINT. 2-2.0 The voltage is -6V, and the third step value, Step3, is 0.1V. In this case, the second sub-initialization signal VINT is adjusted from low to high. 2-2 Adjust by 0.1V each time until the adjusted second sub-initialization signal VINT is reached. 2-2.k The value is greater than -1V.

[0129] For example, the initial value of the second sub-initialization signal is VINT. 2-2.0 The initial value is -1V, and the third step value, Step3, is 0.5V. In this case, the second sub-initialization signal VINT is adjusted from high to low. 2-2 Adjust by 0.5V each time until the adjusted second sub-initialization signal VINT is reached. 2-2.k The value is less than -6V.

[0130] S4213: Under a target emission delay time AM Td and each of the N×K second parameter combinations, obtain multiple flicker values ​​of the display module 110 at multiple specified gray levels 1~S.

[0131] In the above steps, a target emission delay time AM Td can be N first sub-initialization signals VINT in step S410. 2-1 Any one of the N target emission delay times AM Td.

[0132] In addition, the second sub-initialization signal VINT can be adjusted in each step. 2-2 Previously, obtain the second sub-initialization signal VINT before the adjustment. 2-2 Below, the display module 110 displays N first sub-initialization signals VINT. 2-1.0 ~ VINT 2-1.n-1 And multiple flicker values ​​under multiple specified gray levels 1 to S.

[0133] In other words, the second sub-initialization signal VINT is adjusted in a step-by-step manner. 2-2During the process, each adjustment of the second sub-initialization signal VINT 2-2 Previously, the first sub-initialization signal VINT was adjusted in steps. 2-1 And adjust the first sub-initialization signal VINT in each step. 2-1 Previously, the first sub-initialization signal VINT before the adjustment was also obtained. 2-1 Below, the display module 110 displays multiple flicker values ​​at multiple specified gray levels 1 to 5, thereby obtaining multiple second sub-initialization signals VINT. 2-2.0 ~VINT 2-2.k-1 At the same time, for each of the N×K combinations of second parameters, the display module 110 displays multiple flicker values ​​at multiple specified gray levels 1 to S.

[0134] S4214: Select one specified gray level as the target gray level from multiple specified gray levels 1 to S.

[0135] In the above steps, the target grayscale is at any second sub-initialization signal VINT 2-2 (VINT 2-2.0 ~ VINT 2-2.k-1 The N first sub-initialization signals VINT corresponding to any one of them) 2-1.0 ~ VINT 2-1.n-1 The difference between the maximum and minimum flicker values ​​is within a first preset threshold range, which may be, for example, 10 dB to 15 dB, and / or, in any combination of second parameters, the flicker value is within a second preset threshold range, which may be, for example, -40 dB to -70 dB.

[0136] For example, such as Figure 21 As shown, the target gray level is the specified gray level 5.

[0137] S4215: From multiple second sub-initialization signals VINT 2-2.0 ~VINT 2-2.k-1 In the process, find the second sub-initialization signal VINT that has the largest range of flicker values ​​for display module 110 at the target grayscale. 2-2 PRVINT is the preferred second sub-initialization signal. 2-2 .

[0138] In the above steps, multiple second sub-initialization signals VINT are used. 2-2.0 ~VINT 2-2.k-1 In the process, find the second sub-initialization signal VINT that has the largest range of flicker values ​​for display module 110 at the target grayscale. 2-2 That is, in each second sub-initialization signal VINT 2-2 (VINT) 2-2.0 ~VINT2-2.k-1 Under the condition that the maximum and minimum flicker values ​​of the display module 110 at the target grayscale are calculated, the second sub-initialization signal VINT corresponding to the maximum difference is then used. 2-2 As the preferred second sub-initialization signal PR VINT 2-2 .

[0139] For example, such as Figure 21 As shown, when the target gray level is a specified gray level 5, the second sub-initialization signal PR VINT is preferred. 2-2 For VINT 2-1.0 + Step 3.

[0140] In other embodiments, such as Figure 14 As shown, S421 includes S4216 to S4219.

[0141] S4216: Set the initial value VINT of the second sub-initialization signal. 2-2.0 And select one specified gray level from multiple specified gray levels 1 to S as the target gray level.

[0142] In the above steps, the second sub-initialization signal VINT 2-2 The meaning of , the range of initial values, and the meaning of target grayscale can be found above, and will not be repeated here. Different line layouts may correspond to different target grayscales. The target grayscale can be selected based on the actual line layout, i.e., based on empirical values, a specific grayscale can be directly selected from multiple specified grayscales 1 to S as the target grayscale.

[0143] S4217: Initial value VINT based on the second sub-initialization signal 2-2.0 Step-by-step adjustment of the second sub-initialization signal VINT 2-2 Until the adjusted second sub-initialization signal VINT 2-2. k Exceeding the second sub-initialization signal VINT 2-2 The preset range is obtained by using the second sub-initialization signal VINT. 2-2 Multiple second sub-initialization signals VINT within the preset range 2-2.0 ~VINT 2-2. k -1 .

[0144] In the above steps, multiple first sub-initialization signals VINT 2-1.0 ~ VINT 2-1. n -1 The number is N, with multiple second sub-initialization signals VINT. 2-2.0 ~VINT 2-1. k -1 The number is K, and there are N first sub-initialization signals VINT. 2-1.0 ~VINT 2-1. n -1and K second sub-initialization signals VINT 2-2.0 ~VINT 2-1. k -1 N×K combinations of second parameters are formed, and each combination of second parameters includes a first sub-initialization signal VINT. 2-1 and a second sub-initialization signal VINT 2-2 .

[0145] Among them, the second sub-initialization signal VINT 2-2 The preset range can be found above. Additionally, the second sub-initialization signal VINT is adjusted in steps. 2-2 Until the adjusted second sub-initialization signal VINT 2-2.k Exceeding the second sub-initialization signal VINT 2-2 The process of setting the preset range can be referred to above, and will not be repeated here.

[0146] S4218: Based on a target emission delay time AM Td, obtain multiple flicker values ​​of the display module 110 under the target grayscale in each of the N×K second parameter combinations.

[0147] In the above steps, the second sub-initialization signal VINT can be adjusted in each step. 2-2 Previously, obtain the second sub-initialization signal VINT before the adjustment. 2-2 Below, the display module 110 displays N first sub-initialization signals VINT. 2-1.0 ~VINT 2-1.n-1 And multiple flicker values ​​under the target grayscale.

[0148] In other words, the second sub-initialization signal VINT is adjusted in a step-by-step manner. 2-2 During the process, each adjustment of the second sub-initialization signal VINT 2-2 Previously, the first sub-initialization signal VINT was adjusted in steps. 2-1 And adjust the first sub-initialization signal VINT in each step. 2-1 Previously, the first sub-initialization signal VINT before the adjustment was also obtained. 2-1 Below, the display module 110 shows multiple flicker values ​​at the target grayscale, thereby obtaining multiple second sub-initialization signals VINT. 2-2.0 ~ VINT 2-2.k-1 At the same time, multiple flicker values ​​of the display module 110 under the target grayscale are obtained for each of the N×K combinations of second parameters.

[0149] S4219: Initialization from multiple second sub-signals VINT 2-2.0 ~ VINT 2-2.k-1In the process, find the second sub-initialization signal VINT corresponding to the minimum flicker value of display module 110 at the target grayscale. 2-2 PRVINT is the preferred second sub-initialization signal. 2-2 .

[0150] In the above steps, such as Figure 22 As shown, when the target gray level is a specified gray level 5, the second sub-initialization signal PR VINT is preferred. 2-2 for Figure 22 The second sub-initialization signal VINT corresponds to the lowest point inside the middle circle. 2-2 VINT 2-2.0 +Step3×2.

[0151] In other embodiments, such as Figure 15 As shown, S400 includes S440 to S460.

[0152] S440: Multiple emission delay times Td0~Td m-1 The emission delay time Td corresponding to the minimum flicker value of the display module 110 at each specified gray level (1~S) is determined as the target emission delay time AM Td.

[0153] In the above steps, such as Figure 20 As shown, the target emission delay time AM Td corresponding to gray level 1 is specified as Td0+Step1×2; the target emission delay time AM Td corresponding to gray level 2 is specified as Td0+Step1×2; the target emission delay time AM Td corresponding to gray level 3 is specified as Td0+Step1×3; and the target emission delay time AM Td corresponding to gray level 4 is specified as Td0+Step1×2.

[0154] Specifically, if there is only one target emission delay time AM Td, execute S450; if there are multiple target emission delay times AM Td, execute S460.

[0155] S450: The target emission delay time AM Td is determined as the preferred emission delay time PR Td.

[0156] In the above steps, the minimum flicker value of all specified gray levels 1 to S is located under the same emission delay time Td, which is the target emission delay time AM Td, or the preferred emission delay time PR Td.

[0157] S460: Determine one of the multiple target emission delay times AM Td as the preferred emission delay time PR Td.

[0158] In the above steps, it is preferable that the number of minimum flicker values ​​corresponding to the emission delay time PR Td is greater than or equal to the number of minimum flicker values ​​corresponding to the emission delay time AM Td of other targets. For example Figure 20 As shown, the preferred emission delay time PRTd is Td0 + Step1 × 2.

[0159] Based on this, such as Figure 16 As shown, in some embodiments, the above parameter adjustment method further includes S500~S560.

[0160] S500: Set the initial value VINT of the first sub-initialization signal. 2-1.0 .

[0161] In the above steps, the first sub-initialization signal VINT 2-1 The meaning and range of initial values ​​can be found in the above text, and will not be repeated here.

[0162] S510: Initial value VINT based on the first sub-initialization signal 2-1.0 Step-by-step adjustment of the first sub-initialization signal VINT 2-1 Until the adjusted first sub-initialization signal VINT 2-1.n Exceeding the first sub-initialization signal VINT 2-1 The preset range is obtained from the first sub-initialization signal VINT. 2-1 Multiple first sub-initialization signals VINT within the preset range 2-1.0 ~VINT 2-1.n-1 .

[0163] In the above steps, multiple first sub-initialization signals VINT 2-1.0 ~VINT 2-1.n-1 The number is N. Among them, the first sub-initialization signal VINT 2-1 The preset range can be found above, and will not be repeated here. Furthermore, the first sub-initialization signal VINT is adjusted in steps. 2-1 Until the adjusted first sub-initialization signal VINT 2-1.n Exceeding the first sub-initialization signal VINT 2-1 The process of setting the preset range can be referred to in S320 above, and will not be repeated here.

[0164] S520: Set the initial value VINT of the second sub-initialization signal. 2-2.0 .

[0165] In the above steps, the second sub-initialization signal VINT 2-2 The meaning and range of initial values ​​can be found in the above text, and will not be repeated here.

[0166] S530: Initial value VINT based on the second sub-initialization signal 2-2.0 Step-by-step adjustment of the second sub-initialization signal VINT 2-2 Until the adjusted second sub-initialization signal VINT 2-2. k Exceeding the second sub-initialization signal VINT 2-2 The preset range is obtained by using the second sub-initialization signal VINT. 2-2 Multiple second sub-initialization signals VINT within the preset range 2-2.0 ~VINT 2-1. k -1 .

[0167] In the above steps, multiple first sub-initialization signals VINT 2-1.0 ~ VINT 2-1.n-1 The number is N, with multiple second sub-initialization signals VINT. 2-2.0 ~VINT 2-1. k -1 The number is K; N first sub-initialization signals VINT 2-1.0 ~VINT 2-1.n-1 and K second sub-initialization signals VINT 2-2.0 ~VINT 2-1. k -1 N×K combinations of second parameters are formed, and each combination of second parameters includes a first sub-initialization signal VINT. 2-1 and a second sub-initialization signal VINT 2-2 .

[0168] Among them, the second sub-initialization signal VINT 2-2 The preset range can be found above. Additionally, the second sub-initialization signal VINT is adjusted in steps. 2-2 Until the adjusted second sub-initialization signal VINT 2-2. k Exceeding the second sub-initialization signal VINT 2-2. The process of setting the preset range can be referred to above, and will not be repeated here.

[0169] S540: Under the preferred light emission delay time PR Td and each of the N×K second parameter combinations, obtain multiple flicker values ​​of the display module 110 at multiple specified gray levels 1~S.

[0170] In the above steps, the second sub-initialization signal VINT can be adjusted in each step. 2-2 Previously, obtain the second sub-initialization signal VINT before the adjustment. 2-2 Below, the display module 110 displays N first sub-initialization signals VINT. 2-1.0 ~VINT 2-1.n-1 And multiple flicker values ​​under multiple specified gray levels 1 to S.

[0171] In other words, the second sub-initialization signal VINT is adjusted in a step-by-step manner. 2-2 During the process, each adjustment of the second sub-initialization signal VINT 2-2 Previously, the first sub-initialization signal VINT was adjusted in steps. 2-1 And adjust the first sub-initialization signal VINT in each step. 2-1 Previously, the first sub-initialization signal VINT before the adjustment was also obtained. 2-1 Below, the display module 110 displays multiple flicker values ​​at multiple specified gray levels 1 to 5, thereby obtaining multiple second sub-initialization signals VINT. 2-2.0 ~VINT 2-2.k-1 At the same time, for each of the N×K combinations of second parameters, the display module 110 displays multiple flicker values ​​at multiple specified gray levels 1 to S.

[0172] S550: Select one specified gray level as the target gray level from multiple specified gray levels 1 to S.

[0173] In the above steps, the target grayscale is at any second sub-initialization signal VINT 2-2 (VINT 2-2.0 ~ VINT 2-2.k-1 The N first sub-initialization signals VINT corresponding to any one of them) 2-1.0 ~ VINT 2-1.n-1 The difference between the maximum and minimum flicker values ​​is within a first preset threshold range, which may be, for example, 10 dB to 15 dB, and / or, in any combination of second parameters, the flicker value is within a second preset threshold range, which may be, for example, -40 dB to -70 dB.

[0174] For example, such as Figure 21 As shown, the target gray level is the specified gray level 5.

[0175] S560: From multiple second sub-initialization signals VINT 2-2.0 ~VINT 2-2.k-1 In the process, find the second sub-initialization signal VINT that has the largest range of flicker values ​​for display module 110 at the target grayscale. 2-2 PRVINT is the preferred second sub-initialization signal. 2-2 .

[0176] In the above steps, multiple second sub-initialization signals VINT are used. 2-2.0 ~VINT 2-2.k-1 In the process, find the second sub-initialization signal VINT that has the largest range of flicker values ​​for display module 110 at the target grayscale. 2-2 That is, in each second sub-initialization signal VINT2-2 (VINT) 2-2.0 ~VINT 2-2.k-1 Under the condition that the maximum and minimum flicker values ​​of the display module 110 at the target grayscale are calculated, the second sub-initialization signal VINT corresponding to the maximum difference is then used. 2-2 As the preferred second sub-initialization signal PR VINT 2-2 .

[0177] For example, such as Figure 21 As shown, when the target gray level is a specified gray level 5, the second sub-initialization signal PR VINT is preferred. 2-2 For VINT 2-1.0 + Step 3.

[0178] In other embodiments, such as Figure 17 As shown, the above parameter adjustment method also includes S600~S650.

[0179] S600: Set the initial value VINT of the first sub-initialization signal. 2-1.0 .

[0180] In the above steps, the first sub-initialization signal VINT 2-1 The meaning of and the range of initial values ​​can be found in the above text, and will not be repeated here.

[0181] S610: Initial value VINT based on the first sub-initialization signal 2-1.0 Step-by-step adjustment of the first sub-initialization signal VINT 2-1 Until the adjusted first sub-initialization signal VINT 2-1.n Exceeding the first sub-initialization signal VINT 2-1 The preset range is obtained from the first sub-initialization signal VINT. 2-1 Multiple first sub-initialization signals VINT within the preset range 2-1.0 ~VINT 2-1.n-1 .

[0182] In the above steps, multiple first sub-initialization signals VINT 2-1.0 ~VINT 2-1.n-1 The number is N. Among them, the first sub-initialization signal VINT 2-1 The preset range can be found above. Additionally, the first sub-initialization signal VINT is adjusted in steps. 2-1 Until the adjusted first sub-initialization signal VINT 2-1.n Exceeding the first sub-initialization signal VINT 2-1 The process of setting the preset range can be referred to above, and will not be repeated here.

[0183] S620: Set the initial value VINT of the second sub-initialization signal. 2-2.0 And select one specified gray level from multiple specified gray levels 1 to S as the target gray level.

[0184] In the above steps, the second sub-initialization signal VINT 2-2 The meaning of , the range of initial values, and the meaning of target grayscale can be found above, and will not be repeated here. Different line layouts may correspond to different target grayscales. The target grayscale can be selected based on the actual line layout, i.e., based on empirical values, a specific grayscale can be directly selected from multiple specified grayscales 1 to S as the target grayscale.

[0185] S630: Initial value VINT based on the second sub-initialization signal 2-2.0 Step-by-step adjustment of the second sub-initialization signal VINT 2-2 Until the adjusted second sub-initialization signal VINT 2-2. k If the value exceeds the preset range of the second sub-initialization signal, it will be obtained in the second sub-initialization signal VINT. 2-2 Multiple second sub-initialization signals VINT within the preset range 2-2.0 ~VINT 2-2. k -1 .

[0186] In the above steps, multiple second sub-initialization signals VINT 2-2.0 ~VINT 2-2. k -1 The number is K; N first sub-initialization signals VINT 2-1.0 ~ VINT 2-1. n -1 and K second sub-initialization signals VINT 2-2.0 ~VINT 2-2. k -1 N×K combinations of second parameters are formed, and each combination of second parameters includes a first sub-initialization signal VINT. 2-1 and a second sub-initialization signal VINT 2-2 .

[0187] Among them, the second sub-initialization signal VINT 2-2 The preset range can be found above. Additionally, the second sub-initialization signal VINT is adjusted in steps. 2-2 Until the adjusted second sub-initialization signal VINT 2-2.k Exceeding the second sub-initialization signal VINT 2-2 The process of setting the preset range can be referred to above, and will not be repeated here.

[0188] S640: Under the preferred light emission delay time PR Td and each of the N×K second parameter combinations, obtain multiple flicker values ​​of the display module 110 at the target grayscale.

[0189] In the above steps, the second sub-initialization signal VINT can be adjusted in each step. 2-2 Previously, obtain the second sub-initialization signal VINT before the adjustment. 2-2 Below, the display module 110 displays N first sub-initialization signals VINT. 2-1.0 ~VINT 2-1. n -1 And multiple flicker values ​​under the target grayscale.

[0190] In other words, the second sub-initialization signal VINT is adjusted in a step-by-step manner. 2-2 During the process, each adjustment of the second sub-initialization signal VINT 2-2 Previously, the first sub-initialization signal VINT was adjusted in steps. 2-1 And adjust the first sub-initialization signal VINT in each step. 2-1 Previously, the first sub-initialization signal VINT before the adjustment was also obtained. 2-1 Below, the display module 110 shows multiple flicker values ​​at the target grayscale, thereby obtaining multiple second sub-initialization signals VINT. 2-2.0 ~VINT 2-2. k -1 At the same time, multiple flicker values ​​of the display module 110 under the target grayscale are obtained for each of the N×K combinations of second parameters.

[0191] S650: From multiple second sub-initialization signals VINT 2-2.0 ~VINT 2-2. k -1 In the process, find the second sub-initialization signal VINT corresponding to the minimum flicker value of display module 110 at the target grayscale. 2-2 PRVINT is the preferred second sub-initialization signal. 2-2 .

[0192] In the above steps, such as Figure 22 As shown, when the target gray level is a specified gray level 5, the second sub-initialization signal PR VINT is preferred. 2-2 for Figure 22 The second sub-initialization signal VINT corresponds to the lowest point inside the middle circle. 2-2 VINT 2-2.0 +Step3×2.

[0193] Based on this, such as Figure 17 As shown, the above parameter adjustment method also includes S700.

[0194] S700: Based on the preferred second sub-initialization signal PR VINT 2-2 The display module 110 will be initialized in multiple first sub-initialization signals VINT. 2-1.0 ~ VINT2-1. n -1 Below, the first sub-initialization signal VINT corresponding to the minimum flicker value of the target grayscale. 2-1 The preferred first sub-initialization signal PR VINT is determined to be... 2-1 .

[0195] In the above steps, such as Figure 22 As shown, the target gray level is the specified gray level 5, and the preferred second sub-initialization signal PRVINT is used. 2-2 For VINT 2-2.0 In the case of +Step3×2, the preferred first sub-initialization signal PR VINT is preferred. 2-1 For VINT 2-1 +Step2×3.

[0196] In some embodiments, such as Figure 18 As shown, the above parameter adjustment method also includes S800~S830.

[0197] S800: Sets the initial value V of the data hold signal. keep.0 .

[0198] In the above steps, the data hold signal V keep This refers to the data signal received at the data signal terminal of the pixel driving circuit 12 in the holding frame. The initial value V of the data holding signal is... keep.0 It can be 1V to 8V. For example, the initial value V of the data hold signal... keep.0 It can be any of 1V, 3V, 5V, and 8V.

[0199] S810: Initial value V based on the data hold signal keep.0 Step-by-step adjustment of data holding signal V keep Until the adjusted data hold signal V keep.x Exceeding the data hold signal V keep Within the preset range, the data hold signal V is obtained. keep Multiple data hold signals V within a preset range keep.0 ~V keep.x .

[0200] In the above steps, x ≥ 1, and x is a positive integer. Data hold signal V keep The preset range is 1V to 8V. The step-adjustment data hold signal V... keep It can be based on the initial value V of the data hold signal. keep.0 The fourth step value, Step4, is used to adjust the data hold signal V from low to high or from high to low. keep Each adjustment yields a data hold signal V. keep.xHere, the fourth setting step value Step4 can be 0.1V~0.5V. For example, the fourth setting step value Step4 can be any one of 0.1V, 0.2V, 0.3V, 0.4V and 0.5V.

[0201] For example, the initial value V of the data hold signal keep.0 The initial value is 1V, and the fourth step value is set to 0.1V. In this case, the data hold signal V is adjusted from low to high. keep Adjust by 0.1V each time until the adjusted data holds the signal V. keep.x The value is greater than 8V.

[0202] For example, the initial value V of the data hold signal keep.0 The voltage is set to 8V, and the fourth step value, Step 4, is set to 0.5V. In this case, the data hold signal V is adjusted from high to low. keep Adjust by 0.5V each time until the adjusted data holds the signal V. keep.x The value is less than 1V.

[0203] S820: Preferred emission delay time PR Td, preferred first sub-initialization signal PR VINT 2-1 And the preferred second sub-initialization signal PR VINT 2-2 and each data hold signal V keep (V) keep.0 ~V keep.x Under the condition of ), obtain the flicker value of display module 110 under the target grayscale.

[0204] In the above steps, the data hold signal V can be adjusted in each step. keep Previously, the data before the adjustment was acquired and held signal V. keep Below, the flicker value of module 110 at the target grayscale is displayed. That is, the flicker value of the data hold signal V is adjusted in a step-by-step manner. keep During the process, the data hold signal V corresponding to each adjustment is acquired simultaneously. keep The flicker value at the target gray level, thus obtaining multiple data hold signals V keep.0 ~V keep.x At the same time, obtain each data hold signal V keep (V) keep.0 ~V keep.x The display module 110 shows the flicker value at the target grayscale.

[0205] S830: Holds multiple data signals V keep.0 ~V keep.x Below, the data hold signal corresponding to the minimum flicker value of the target grayscale is used to determine the preferred data hold signal PRV. keep .

[0206] In the above steps, such as Figure 23 As shown, the preferred data hold signal is PR V. keep for Figure 23 The lowest point within the middle circle corresponds to the data hold signal V. keep V keep.0 +Step4×2.

[0207] Some embodiments of the present disclosure provide an electronic device including a processor and a memory, the memory storing computer program instructions that, when executed on the processor, cause the processor to perform one or more steps in the parameter adjustment method as described in any of the above embodiments.

[0208] like Figure 8 As shown, the parameter adjustment system 120 of the display module 110 provided in some embodiments of this disclosure includes a processor 40, a testing device 50, and a detection device 60.

[0209] The processor 40 is configured to perform one or more steps in the parameter adjustment method described in any of the above embodiments. For example, the processor 40 may be a display device 100 (see...). Figure 1 The processor 40 is located on the motherboard. A test device 50 is coupled to the processor 40 and is configured to, based on the emission delay time Td from the processor 40 and the first sub-initialization signal VINT... 2-1 Second sub-initialization signal VINT 2-2 and data hold signal V keep The test device 50 issues control commands to control the display module 110. For example, the test device 50 is a screen generator. The detection device 60 is coupled to the processor 40. The detection device 60 is configured to measure the flicker value when the display module 110 is displayed and send the flicker value to the processor 40. For example, the detection device 60 is a color analyzer.

[0210] Some embodiments of this disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium) storing computer program instructions that, when executed on a computer (e.g., a display device), cause the computer to perform the parameter adjustment method as described in any of the embodiments above.

[0211] Exemplary examples of computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., CDs (Compact Disks), DVDs (Digital Versatile Disks), etc.), smart cards, and flash memory devices (e.g., EPROMs (Erasable Programmable Read-Only Memory), cards, sticks, or key drives, etc.). The various computer-readable storage media described in this disclosure may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0212] The computer program product provided in some embodiments of this disclosure is stored on a non-transitory computer-readable storage medium. The computer program product includes computer program instructions that, when executed on a computer (e.g., a display device), cause the computer to perform the parameter adjustment method as described in the above embodiments.

[0213] Some embodiments of this disclosure also provide a computer program. When the computer program is executed on a computer (e.g., a display device), the computer program causes the computer to perform the parameter adjustment method as described in the above embodiments.

[0214] The beneficial effects of the aforementioned computer-readable storage medium, computer program product, and computer program are the same as the beneficial effects of the parameter adjustment methods described in some of the above embodiments, and will not be repeated here.

[0215] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A method for adjusting parameters of a display module, characterized in that, The display module can operate in a low-frequency drive mode, which includes multiple low-frequency cycles, and one low-frequency cycle includes a refresh frame and at least one hold frame. The parameter adjustment method includes: Set an initial value for the light emission delay time and multiple specified gray levels; the light emission delay time is the time difference between the start of the charging phase and the start of the light emission phase of a frame; Based on the initial value of the light emission delay time, the light emission delay time is adjusted step by step until the adjusted light emission delay time exceeds the preset range of the light emission delay time, thereby obtaining multiple light emission delay times within the preset range of the light emission delay time; At each of the light emission delay times, acquire multiple flicker values ​​of the display module at the multiple specified gray levels; Based on the multiple flicker values ​​corresponding to the multiple light emission delay times, a preferred light emission delay time is determined from the multiple light emission delay times.

2. The parameter adjustment method according to claim 1, characterized in that, The step of acquiring multiple flicker values ​​of the display module at the multiple specified gray levels at each of the light emission delay times includes: Set the initial value of the first sub-initialization signal; the first sub-initialization signal is the initialization signal received by the light-emitting device in the refresh frame; Based on the initial value of the first sub-initialization signal, the first sub-initialization signal is adjusted stepwise until the adjusted first sub-initialization signal exceeds the preset range of the first sub-initialization signal, resulting in multiple first sub-initialization signals within the preset range of the first sub-initialization signal; the number of the multiple light emission delay times is M, the number of the multiple first sub-initialization signals is N, and the M light emission delay times and N first sub-initialization signals form M×N first parameter combinations, with each first parameter combination including one light emission delay time and one first sub-initialization signal; Under each of the M×N first parameter combinations, the display module obtains multiple flicker values ​​at the multiple specified gray levels.

3. The parameter adjustment method according to claim 2, characterized in that, A set of multiple blink values ​​corresponding to a first parameter combination is a blink value; The step of determining a preferred light emission delay time from the plurality of light emission delay times based on the plurality of flicker values ​​corresponding to the plurality of light emission delay times includes: From the M emission delay times, determine the target emission delay time corresponding to each first sub-initialization signal to obtain multiple target emission delay times; The target emission delay time is the emission delay time corresponding to the group of flashing values ​​with the highest convergence among the M groups of flashing values ​​corresponding to the first sub-initialization signal under M emission delay times. A preferred first sub-initialization signal is determined; the preferred first sub-initialization signal is one of the N first sub-initialization signals. The target emission delay time corresponding to the preferred first sub-initialization signal is determined as the preferred emission delay time.

4. The parameter adjustment method according to claim 3, characterized in that, From N first sub-initialization signals, a preferred first sub-initialization signal is determined, including: A plurality of second sub-initialization signals are acquired, and one of the plurality of second sub-initialization signals is determined as the preferred second sub-initialization signal; the second sub-initialization signal is the initialization signal received by the holding frame light-emitting device; Based on the preferred second sub-initialization signal, N flicker values ​​of the target gray level corresponding to N first sub-initialization signals are obtained; the target gray level is one of multiple specified gray levels; The first sub-initialization signal corresponding to the smallest flashing value among the N flashing values ​​is determined as the preferred first sub-initialization signal.

5. The parameter adjustment method according to claim 4, characterized in that, The step of acquiring multiple second sub-initialization signals and determining one of the multiple second sub-initialization signals as the preferred second sub-initialization signal includes: Set the initial value of the second sub-initialization signal; Based on the initial value of the second sub-initialization signal, the second sub-initialization signal is adjusted stepwise until the adjusted second sub-initialization signal exceeds the preset range of the second sub-initialization signal, resulting in multiple second sub-initialization signals within the preset range of the second sub-initialization signal; the number of the multiple first sub-initialization signals is N, the number of the multiple second sub-initialization signals is K, and the N first sub-initialization signals and K second sub-initialization signals form N×K second parameter combinations, where each second parameter combination includes one first sub-initialization signal and one second sub-initialization signal; Under one of the multiple target emission delay times and under each of the N×K second parameter combinations, the display module obtains multiple flicker values ​​at the multiple specified gray levels; From the plurality of specified gray levels, one specified gray level is selected as the target gray level; the difference between the maximum flicker value and the minimum flicker value of the target gray level under any of the N first sub-initialization signals corresponding to any second sub-initialization signal is within a first preset threshold range; and / or, in any combination of second parameters, the flicker value is within a second preset threshold range; From the plurality of second sub-initialization signals, the second sub-initialization signal with the largest range of flicker values ​​of the display module at the target grayscale is selected as the preferred second sub-initialization signal.

6. The parameter adjustment method according to claim 4, characterized in that, The step of acquiring multiple second sub-initialization signals and determining one of the multiple second sub-initialization signals as the preferred second sub-initialization signal includes: Set the initial value of the second sub-initialization signal, and select one specified gray level from the plurality of specified gray levels as the target gray level; Based on the initial value of the second sub-initialization signal, the second sub-initialization signal is adjusted stepwise until the adjusted second sub-initialization signal exceeds the preset range of the second sub-initialization signal, resulting in multiple second sub-initialization signals within the preset range of the second sub-initialization signal; the number of the multiple first sub-initialization signals is N, the number of the multiple second sub-initialization signals is K, and the N first sub-initialization signals and K second sub-initialization signals form N×K second parameter combinations, where each second parameter combination includes one first sub-initialization signal and one second sub-initialization signal; Based on one of the multiple target emission delay times, under each of the N×K second parameter combinations, the display module obtains multiple flicker values ​​at the target grayscale. From the plurality of second sub-initialization signals, the second sub-initialization signal corresponding to the minimum flicker value of the display module at the target gray level is selected as the preferred second sub-initialization signal.

7. The parameter adjustment method according to claim 1, characterized in that, The step of determining a preferred light emission delay time from the plurality of light emission delay times based on the plurality of flicker values ​​corresponding to the plurality of light emission delay times includes: The light emission delay time corresponding to the minimum flicker value of the display module at each specified gray level under the multiple light emission delay times is determined as the target light emission delay time; When the target emission delay time is one, the target emission delay time is determined as the preferred emission delay time; When there are multiple target light emission delay times, one of the multiple target light emission delay times is determined as the preferred light emission delay time; the number of minimum flicker values ​​corresponding to the preferred light emission delay time is greater than or equal to the number of minimum flicker values ​​corresponding to other target light emission delay times.

8. The parameter adjustment method according to claim 7, characterized in that, Also includes: Set the initial value of the first sub-initialization signal; the first sub-initialization signal is the initialization signal received by the light-emitting device in the refresh frame; Based on the initial value of the first sub-initialization signal, the first sub-initialization signal is adjusted step by step until the adjusted first sub-initialization signal exceeds the preset range of the first sub-initialization signal, resulting in multiple first sub-initialization signals within the preset range of the first sub-initialization signal; the number of the multiple first sub-initialization signals is N. Set the initial value of the second sub-initialization signal; the second sub-initialization signal is the initialization signal received by the holding frame light-emitting device; Based on the initial value of the second sub-initialization signal, the second sub-initialization signal is adjusted stepwise until the adjusted second sub-initialization signal exceeds the preset range of the second sub-initialization signal, resulting in multiple second sub-initialization signals within the preset range of the second sub-initialization signal; the number of the multiple second sub-initialization signals is K; N first sub-initialization signals and K second sub-initialization signals form N×K second parameter combinations, and a second parameter combination includes one first sub-initialization signal and one second sub-initialization signal; Under the preferred light emission delay time and each of the N×K second parameter combinations, the display module obtains multiple flicker values ​​at the multiple specified gray levels; Select one specified gray level as the target gray level from the plurality of specified gray levels; The difference between the maximum and minimum flicker values ​​of the target grayscale under any of the N first sub-initialization signals corresponding to any second sub-initialization signal is within a first preset threshold range. And / or, in any combination of the second parameters, the flicker value is within the range of the second preset threshold; From the plurality of second sub-initialization signals, the second sub-initialization signal with the largest range of flicker values ​​of the display module at the target grayscale is selected as the preferred second sub-initialization signal.

9. The parameter adjustment method according to claim 5, characterized in that, The first preset threshold range is 10dB to 15dB; and / or, the second preset threshold range is -40dB to -70dB.

10. The parameter adjustment method according to claim 7, characterized in that, Also includes: Set the initial value of the first sub-initialization signal; the first sub-initialization signal is the initialization signal received by the light-emitting device in the refresh frame; Based on the initial value of the first sub-initialization signal, the first sub-initialization signal is adjusted step by step until the adjusted first sub-initialization signal exceeds the preset range of the first sub-initialization signal, resulting in multiple first sub-initialization signals within the preset range of the first sub-initialization signal; the number of the multiple first sub-initialization signals is N. The initial value of the second sub-initialization signal is set, and a specified gray level is selected from the plurality of specified gray levels as the target gray level; the second sub-initialization signal is the initialization signal received by the holding frame light-emitting device; Based on the initial value of the second sub-initialization signal, the second sub-initialization signal is adjusted stepwise until the adjusted second sub-initialization signal exceeds the preset range of the second sub-initialization signal, resulting in multiple second sub-initialization signals within the preset range of the second sub-initialization signal; the number of the multiple second sub-initialization signals is K; N first sub-initialization signals and K second sub-initialization signals form N×K second parameter combinations, and a second parameter combination includes one first sub-initialization signal and one second sub-initialization signal; Under the preferred light emission delay time and each of the N×K second parameter combinations, the display module obtains multiple flicker values ​​at the target grayscale. From the plurality of second sub-initialization signals, the second sub-initialization signal corresponding to the minimum flicker value of the display module at the target gray level is selected as the preferred second sub-initialization signal.

11. The parameter adjustment method according to claim 9, characterized in that, Also includes: Based on the preferred second sub-initialization signal, the first sub-initialization signal corresponding to the minimum flicker value of the target grayscale under the plurality of first sub-initialization signals of the display module is determined as the preferred first sub-initialization signal.

12. The parameter adjustment method according to any one of claims 4 to 6 and 11, characterized in that, Also includes: Set the initial value of the data hold signal; the data hold signal is the data signal received by the data signal terminal of the pixel driving circuit in the hold frame; Based on the initial value of the data hold signal, the data hold signal is adjusted step by step until the adjusted data hold signal exceeds the preset range of the data hold signal, thereby obtaining multiple data hold signals within the preset range of the data hold signal. Under the preferred light emission delay time, the preferred first sub-initialization signal, the preferred second sub-initialization signal, and each data hold signal, the flicker value of the display module at the target grayscale is obtained; The preferred data holding signal is determined by identifying the data holding signal corresponding to the minimum flicker value of the target grayscale under the multiple data holding signals.

13. The parameter adjustment method according to claim 2, characterized in that, The preset range of the first sub-initialization signal is -1V to -6V.

14. The parameter adjustment method according to claim 4, characterized in that, The preset range of the second sub-initialization signal is -1V to -6V.

15. The parameter adjustment method according to claim 12, characterized in that, The preset range of the data holding signal is 1V to 8V.

16. The parameter adjustment method according to claim 1, characterized in that, The preset range of the light emission delay time is 0 to 30 line scan periods.

17. An electronic device, characterized in that, It includes a processor and a memory, the memory storing computer program instructions that, when executed on the processor, cause the processor to perform one or more steps of the parameter adjustment method as described in any one of claims 1 to 16.

18. A parameter adjustment system for a display module, characterized in that, include: The processor is configured to perform one or more steps in the parameter adjustment method as described in any one of claims 1 to 16; A test device coupled to the processor; the test device is configured to issue control commands for controlling the display module based on the light emission delay time, a first sub-initialization signal, a second sub-initialization signal, and a data hold signal from the processor. A detection device is coupled to the processor; the detection device is configured to measure the flicker value when the display module is displayed and send the flicker value to the processor.

19. A display module, characterized in that, The device includes a display panel and a driver chip; the driver chip stores a preferred light emission delay time, which is obtained according to the parameter adjustment method according to any one of claims 1 to 16; the driver chip is configured to generate a light emission signal according to the preferred light emission delay time and transmit the light emission signal to the display panel.

20. The display module according to claim 19, characterized in that, The driver chip also stores at least one of a preferred first sub-initialization signal, a preferred second sub-initialization signal, and a preferred data holding signal; the preferred first sub-initialization signal is obtained according to the parameter adjustment method according to any one of claims 4-6, 11, and 12; the preferred second sub-initialization signal is obtained according to the parameter adjustment method according to any one of claims 4-6, 9-12; and the preferred data holding signal is obtained according to the parameter adjustment method according to claim 12.

21. A display device, characterized in that, Includes the display module as described in claim 19 or 20.

22. A computer-readable storage medium storing computer program instructions, characterized in that, When the computer program instructions are executed on the processor, the processor causes the processor to perform one or more steps in the parameter adjustment method as described in any one of claims 1 to 16.

23. A computer program product stored on a non-transitory computer-readable storage medium, characterized in that, The computer program product includes computer program instructions, which, when executed on a computer, cause the computer to perform the parameter adjustment method as described in any one of claims 1 to 16.

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