Display control method, apparatus and display driver circuit for display devices

Abstract

This invention discloses a display control method, apparatus, and display driving circuit for a display device. The method includes: acquiring a target frame to be processed by the display device; determining, while the display device is scanning the target frame, the target scan line group in which the current scan line of the display device belongs among multiple scan line groups, wherein each scan line group includes at least one scan line of the display device, different scan line groups correspond to different first subfield sequences, the first subfield sequence representing the sequence in which multiple subframes are arranged according to a first preset order when the target frame is divided into multiple subframes; determining, within the first subfield sequence corresponding to the target scan line group, at least one first target subframe to be opened by the display device to display the grayscale of the current scan line; and opening the first target subframe according to its opening time. This invention solves the technical problem that the refresh rate of display devices cannot be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of display devices, and more specifically, to a display control method, apparatus, and display driving circuit for a display device. Background Technology

[0002] Currently, light-emitting devices are increasingly widely used in display products. Among them, the light-emitting device can be a light-emitting diode (LED), and the display product can be a display device that uses the aforementioned LED.

[0003] The refresh rate of the aforementioned display device is one of the important indicators for measuring the quality of the display device. The improvement of the refresh rate depends not only on the number of subframes that a frame of the display device is divided into, but also on the refresh mechanism and grayscale processing capabilities of the display device itself.

[0004] Increasing the number of subframes will significantly reduce the display efficiency of the display device due to increased power consumption, reduced battery life, and increased complexity. Furthermore, if the display device is inefficient in processing low grayscale images, the refresh rate will not be effectively improved with the increase in the number of subframes, thus presenting a technical problem where the refresh rate of the display device cannot be effectively improved.

[0005] There is currently no effective solution to the technical problem that the refresh rate of the aforementioned display devices cannot be effectively improved. Summary of the Invention

[0006] This invention provides a display control method, apparatus, and display driving circuit for a display device, to at least solve the technical problem that the refresh rate of a display device cannot be effectively improved.

[0007] According to one aspect of the present invention, a display control method for a display device is provided. The method may include: acquiring a target frame to be processed by the display device; when the display device scans the target frame, determining the target scan line group in which the current scan line of the display device is located among multiple scan line groups of the display device, wherein each scan line group includes at least one scan line of the display device, each scan line group includes different scan lines, different scan line groups correspond to different first subfield sequences, the first subfield sequence representing a sequence in which multiple subframes are arranged according to a first preset order when the target frame is divided into multiple subframes; determining, in the first subfield sequence corresponding to the target scan line group, at least one first target subframe to be opened by the display device to display the grayscale of the current scan line, wherein the opening time of the first target subframe in different target scan line groups is different; and opening the first target subframe according to the opening time of the first target subframe.

[0008] According to one aspect of the present invention, a display control device for a display device is also provided. The device may include: an acquisition unit for acquiring a target frame to be processed by the display device; a first determination unit for determining, when the display device scans the target frame, a target scan line group in which the current scan line of the display device is located among multiple scan line groups of the display device, wherein each scan line group includes at least one scan line of the display device, each scan line group includes different scan lines, different scan line groups correspond to different first subfield sequences, the first subfield sequence representing a sequence in which multiple subframes are arranged according to a first preset order when the target frame is divided into multiple subframes; a second determination unit for determining, in the first subfield sequence corresponding to the target scan line group, at least one first target subframe to be opened by the display device to display the grayscale of the current scan line, wherein the opening time of the first target subframe in different target scan line groups is different; and an opening unit for opening the first target subframe according to the opening time of the first target subframe.

[0009] According to one aspect of the present invention, a display driving circuit is also provided. The driving circuit may include: a clock generating unit for providing a global clock signal; a storage unit connected to the clock generating unit for storing grayscale data corresponding to a target frame to be processed by the display device based on the global clock signal; and a pulse width modulation unit connected to the storage unit for generating a first subfield sequence corresponding to each of a plurality of scan line groups in the display device according to the grayscale data provided by the storage unit. Each scan line group includes at least one scan line of the display device, and each scan line group includes different scan lines. Different scan line groups correspond to different first subfield sequences, and the first subfield sequence is used to represent the process of dividing the target frame into multiple... In the case of subframes, multiple subframes are arranged in a first preset order; a channel driving current source, connected to a pulse width modulation unit, is used to drive at least one first light-emitting device to open at least one first target subframe according to the opening time of at least one first target subframe based on the current data used by at least one first target subframe in the multiple subframes. The first target subframe is the subframe that the display device needs to open to display the grayscale of the current scan line in the first subfield sequence corresponding to the target scan line group in the multiple scan line groups. The target scan line group includes the current scan line, and the opening time of the first target subframe in different target scan line groups is different.

[0010] According to one aspect of the present invention, a computer-readable storage medium is also provided. The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device where the computer-readable storage medium is located to perform the display control method of the display device according to the present invention.

[0011] According to one aspect of the present invention, a computer program product is also provided. This computer program product may include a computer program that, when executed by a processor, implements the display control method of the display device according to the embodiments of the present invention.

[0012] In this embodiment of the application, multiple scan lines of the display device are divided into multiple scan line groups. Different scan line groups correspond to different first subfield sequences. The first subfield sequence is used to represent the sequence in which multiple subframes are arranged in a first preset order when the target frame is divided into multiple subframes. Based on this, in multiple scan line groups, for the target scan line group where the current scan line of the display device belongs, at least one first target subframe that needs to be opened to display the grayscale of the current scan line can be determined in the first subfield sequence corresponding to the target scan line group. Thus, when the current scan line changes, the target scan line group to which the current scan line belongs can change. Since the opening time of the first target subframe in the first subfield sequence corresponding to different target scan line groups is different, the purpose of the first target subframe not opening at the same time in different target scan lines (also known as staggered display or subfield staggered display) is achieved. This is equivalent to increasing the number of times the display device turns on and off per frame, thereby improving the refresh rate of the display device without increasing the number of subframes. This avoids the significant reduction in display efficiency that would occur if the number of subframes is increased, and also avoids the situation where the refresh rate will not be effectively improved if the display device is inefficient when processing images with lower grayscale levels. This solves the technical problem that the refresh rate of the display device cannot be effectively improved, and thus achieves the technical effect of effectively improving the refresh rate of the display device. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0014] Figure 1 This is a flowchart of a display control method for a display device according to an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of a temporal subfield arrangement according to an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of another temporal subfield arrangement according to an embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of a first subfield sequence according to an embodiment of the present invention;

[0018] Figure 5This is a schematic diagram of an algorithmic subfield arrangement according to an embodiment of the present invention;

[0019] Figure 6 This is a schematic diagram of an algorithmic subfield corresponding to gray level 1 of a scan line according to an embodiment of the present invention;

[0020] Figure 7 This is a schematic diagram of an algorithmic subfield corresponding to two gray levels in a scan row according to an embodiment of the present invention;

[0021] Figure 8 This is a schematic diagram of an algorithmic subfield corresponding to 3 gray levels of a scan line according to an embodiment of the present invention;

[0022] Figure 9 This is a schematic diagram of two scan row groups according to an embodiment of the present invention;

[0023] Figure 10 This is a schematic diagram of a four-scan row group according to an embodiment of the present invention;

[0024] Figure 11 This is a schematic diagram illustrating the determination of the opening time of a first target subframe according to an embodiment of the present invention;

[0025] Figure 12 This is a schematic diagram of a light-emitting device that illuminates on a subframe according to an embodiment of the present invention;

[0026] Figure 13 This is a schematic diagram illustrating the determination of the opening time of a second target subframe according to an embodiment of the present invention;

[0027] Figure 14 This is a schematic diagram of a display driving circuit according to an embodiment of the present invention;

[0028] Figure 15 This is a schematic diagram of another display driving circuit according to an embodiment of the present invention;

[0029] Figure 16 This is a schematic diagram of a subfield arrangement operation circuit architecture according to an embodiment of the present invention;

[0030] Figure 17 It is a schematic diagram of a subfield arrangement based on related technologies;

[0031] Figure 18 This is a schematic diagram based on another subfield arrangement in related technologies;

[0032] Figure 19 This is a schematic diagram of a display control device for a display device according to an embodiment of the present invention. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0034] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0035] According to an embodiment of the present invention, an embodiment of a display control method for a display device is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0036] Figure 1 This is a flowchart of a display control method for a display device according to an embodiment of the present invention. Figure 1 As shown, the method may include the following steps:

[0037] Step S102: Obtain the target frame to be processed by the display device.

[0038] In the technical solution provided in step S102 of the present invention, the display device can be composed of multiple cabinets, wherein each cabinet can be composed of multiple modules, and each module can include several scanning rows (also called row scans) and several scanning columns (also called channels, columns). Optionally, the display device described in this embodiment can be a display system using LED lights, such as a large-screen LED display system, and the modules can be LED modules, without specific limitations here.

[0039] In this embodiment, a target frame to be processed by the display device is obtained. The target frame can be a basic unit of continuous frames in the video and animation displayed by the display device, and can contain a static frame. The target frame is the carrier of the frame displayed by the display device, and the frame is the representation of the target frame. Optionally, the target frame can be a frame to be processed by the display device, and the frame can be a low-grayscale frame defined by grayscale or brightness. No specific limitation is made here.

[0040] Step S104: When the display device scans the target frame, determine the target scan line group in which the current scan line of the display device is located among the multiple scan line groups of the display device.

[0041] In the technical solution provided by step S104 of the present invention, after obtaining the target frame to be processed by the display device, when the display device scans the target frame, the target scan line group in which the current scan line of the display device is located in the multiple scan line groups of the display device is determined. Each scan line group includes at least one scan line of the display device. Each scan line group includes different scan lines. Different scan line groups correspond to different first subfield sequences. The first subfield sequence is used to represent the sequence in which the multiple subframes are arranged in a first preset order when the target frame is divided into multiple subframes. This will be further described below.

[0042] In this embodiment, since each module of the display device can include several scan lines, the display device can perform line scanning on the target frame. Optionally, the display device in this embodiment can perform line-by-line scanning on the target frame, determine the scan line scanned by the display device at the current moment as the current scan line, and then determine the scan line group containing the current scan line among the multiple scan line groups of the display device, and determine the scan line group containing the current scan line as the aforementioned target scan line group.

[0043] Optionally, this embodiment divides the multiple scan lines of the display device into multiple scan line groups. Each scan line group may include at least one scan line from the multiple scan lines of the display device. The scan lines included in each scan line group are different; that is, the at least one scan line included in different scan line groups is not repeated. Optionally, the multiple scan lines of the display device may include a first scan, a second scan, ... an eighth scan, which can be divided into two scan groups. For example, the first scan, the third scan, the fifth scan, and the seventh scan can be divided into a first scan line group, and the second scan, the fourth scan, the sixth scan, and the eighth scan can be divided into a second scan line group. Alternatively, the first scan, the second scan, ... the eighth scan can be divided into four scan groups, with the first scan and the fifth scan in the first scan line group, the second scan and the sixth scan in the second scan line group, the third scan and the seventh scan in the third scan line group, and the fourth scan and the eighth scan in the fourth scan line group. It should be noted that the method of dividing multiple scan line groups here is only for illustrative purposes and is not a specific implementation.

[0044] In this embodiment, different scan row groups correspond to different first subfield sequences. These first subfield sequences represent the sequence in which the target frame is divided into multiple subframes when the display device scans the target frame, and these subframes are arranged in a first preset order. Specifically, when the display device module in this embodiment displays the target frame, it divides the display of the target frame into multiple subframes. These multiple subframes can be multiple subfields that divide the display time of the target frame. These subfields can be called temporal subfields; that is, the subframes are temporal subfields, and the target frame is composed of multiple temporal subfields. These temporal subfields correspond to the algorithmic subfields actually displayed by the display device. The temporal subfields and algorithmic subfields will be further explained below.

[0045] In this embodiment, the aforementioned temporal subfield is a subfield arrangement in the time dimension. That is, it can be a number of time periods that divide the time of the target frame in the time dimension, such as the first time period, the second time period, the third time period, etc. The arrangement sequence of the aforementioned time periods is the aforementioned first subfield sequence, which can be called temporal subfield arrangement or temporal subfield arrangement order. In the temporal subfield arrangement, the first arriving time period can be called the temporal first subfield, the second arriving time period can be called the temporal second subfield, and so on. Further examples are given below.

[0046] Figure 2 This is a schematic diagram of a time-domain subfield arrangement according to an embodiment of the present invention. Figure 2 As shown, the time period of the target frame (e.g., 1 frame) can be divided into 16 segments, and the resulting temporal subfield arrangement can be temporal subfield 1 to temporal subfield 16.

[0047] Figure 3This is a schematic diagram of another temporal subfield arrangement according to an embodiment of the present invention. For example... Figure 3 As shown, in the time-domain subfield arrangement which can be time-domain subfield 1 to time-domain subfield 16, the first arriving time-domain subfield can be called the first time-domain subfield, the second arriving time-domain subfield can be called the second time-domain subfield, and so on, the sixteenth arriving time-domain subfield can be called the sixteenth time-domain subfield.

[0048] The first subfield sequence in this embodiment can be used to represent the sequence of the above-mentioned multiple subframes arranged in a first preset order. Figure 4 This is a schematic diagram of a first subfield sequence according to an embodiment of the present invention. Figure 4 As shown, the temporal subfield arrangement includes temporal subfield 1 to temporal subfield 16. The above multiple subframes include temporal subfield 1 and temporal subfield 9. Therefore, the first subfield sequence can be the arrangement sequence of temporal subfield 1 and temporal subfield 9 in the temporal subfield arrangement.

[0049] In this embodiment, the aforementioned algorithm subfield refers to the subfield specifically displayed by the display device in relation to the grayscale (or grayscale data) of the scan line. Optionally, the subfield illuminated during the time period corresponding to the time-domain subfield is the algorithm subfield. For example, the algorithm subfield illuminated in the second time period can be the first algorithm subfield, and the algorithm subfield illuminated in the fourth time period can be the second algorithm subfield. Optionally, the number of algorithm subfields in this embodiment is 16. Figure 5 This is a schematic diagram of an algorithmic subfield arrangement according to an embodiment of the present invention. Figure 5 As shown, the algorithm subfield arrangement includes subfields 1' to 16' (where the subfields are also the algorithm subfields mentioned above), which can be sorted in the order of subfield 1', subfield 9', subfield 5', subfield 10', subfield 3', subfield 11', subfield 6', subfield 12', subfield 2', subfield 13', subfield 7', subfield 14', subfield 4', subfield 15', subfield 8', and subfield 16'.

[0050] It should be noted that the number of algorithm subfields of 16 mentioned above is only one example, and it can also be 64. The number of algorithm subfields can be flexibly set according to the actual application scenario of the display device, and there is no specific limit.

[0051] Step S106: In the first subfield sequence corresponding to the target scan line group, determine at least one first target subframe that the display device needs to open to display the grayscale of the current scan line.

[0052] In the technical solution provided by step S106 of the present invention, after determining the target scanning line group in which the current scanning line of the display device is located among the multiple scanning line groups of the display device, at least one first target subframe that needs to be opened for the display device to display the grayscale of the current scanning line can be determined in the first subfield sequence corresponding to the target scanning line group. The opening time of the first target subframe in different target scanning line groups is different. Opening the first target subframe is actually driving the light-emitting device on the current scanning line to display in the first target subframe, which will be further explained below.

[0053] In this embodiment, the grayscale of the scan line can be a range representing brightness levels in the image displayed by the display device, such as grayscale 1, grayscale 2, grayscale 3, etc., without limitation. The grayscale of the scan line can be the grayscale of the entire screen of the display device. In this embodiment, each time the grayscale increases, the new subframe that needs to be opened can correspond to which subfield of the algorithm. For example, grayscale 1 of the scan line corresponds to the first subfield of the algorithm, the new subfield added by grayscale 2 compared to grayscale 1 is called the second subfield of the algorithm, the new subfield added by grayscale 3 compared to grayscale 2 is called the third subfield of the algorithm, and so on. Further examples are provided below.

[0054] Figure 6 This is a schematic diagram of an algorithmic subfield corresponding to gray level 1 of a scan line according to an embodiment of the present invention. For example... Figure 6 As shown, when the display device displays 1 grayscale of the scan line, the subframe that needs to be opened can be the temporal subfield 1, which corresponds to the first subfield of the algorithm in the algorithm subfield arrangement. That is, the subfield that is lit in the temporal subfield 1 in the algorithm subfield arrangement is the first subfield of the algorithm.

[0055] Figure 7 This is a schematic diagram of an algorithmic subfield corresponding to two gray levels in a scan line according to an embodiment of the present invention. For example... Figure 7 As shown, when the display device displays 2 gray levels of the scan line, compared to the display device displaying 1 gray level of the scan line (such as...), Figure 6 As shown), the newly opened subframe can be time domain subfield 9, which corresponds to the second subfield of the algorithm in the algorithm subfield arrangement. That is, the subfield that is lit in time domain subfield 9 in the algorithm subfield arrangement is the second subfield of the algorithm.

[0056] Figure 8 This is a schematic diagram of an algorithmic subfield corresponding to 3 gray levels in a scan line according to an embodiment of the present invention. Figure 8 As shown, when the display device displays 3 gray levels of the scan line, compared to the display device displaying 2 gray levels of the scan line (such as...), Figure 7As shown), the newly opened subframe can be time domain subfield 5, which corresponds to the third subfield of the algorithm in the algorithm subfield arrangement. That is, the subfield that is lit in time domain subfield 5 in the algorithm subfield arrangement is the third subfield of the algorithm.

[0057] Optionally, in this embodiment, the number of temporal subfields corresponding to the grayscale X of the current scan line displayed by the display device is Y, and this Y is related to the setting information of the display device. Optionally, if the display device displays grayscale X of the current scan line, then Y can be the same as X, for example, as described above. Figure 6 A gray level of 1 corresponds to a time-domain subfield, that is, the first time-domain subfield. Figure 7 The grayscale value in the middle 2 corresponds to two temporal subfields, namely temporal subfield 1 and temporal subfield 9. Figure 8 The middle 3 gray levels correspond to three time-domain subfields, namely, time-domain subfield 1, time-domain subfield 9, and time-domain subfield 5. In addition, the relationship between Y and X can also be other relationships, such as Y being 1 / 2X or 1 / 4X, etc. This is just an example and no specific restrictions are imposed.

[0058] In this embodiment, since different scan row groups correspond to different first subfield sequences, when the scan row group is the aforementioned target scan row group, the first target subframe to be opened for the grayscale of the current scan row can be determined in the first subfield sequence corresponding to the target scan row group. Multiple subframes of the target frame include the aforementioned first target subframe, which can be the aforementioned temporal subfield. Opening the first target subframe can be achieved by driving the light-emitting devices on the current scan row to display within the first target subframe, for example, driving the lamps on the current scan row to emit light. That is, in this first target subframe, the light-emitting devices on the current scan row will light up. Optionally, the light-emitting devices can be driven by a driver chip to emit light at a specific time.

[0059] Step S108: Open the first target subframe according to the opening time of the first target subframe.

[0060] In the technical solution provided by step S108 of the present invention, after determining at least one first target subframe that needs to be opened for the display device to display the grayscale of the current scan line in the first subfield sequence corresponding to the target scan line group, the first target subframe can be opened according to the opening time of the first target subframe. That is, when the opening time of the first target subframe is reached, the light-emitting device on the current scan line is driven to display.

[0061] In this embodiment, the current scan line changes over time, and consequently, the target scan line group to which the current scan line belongs also changes. The opening time of the first target subframe differs in different target scan line groups, thus achieving the goal of the first target subframe not opening simultaneously in different target scan lines (also known as staggered display or subfield staggered display). This increases the number of on / off cycles per frame for the display device, improving the refresh rate and preventing subframes from opening simultaneously in different scan lines, which would result in a low refresh rate. Since this embodiment does not increase the refresh rate of the display device by increasing the number of subfields, it improves the refresh rate without increasing the number of subfields, thereby avoiding a decrease in display efficiency and solving the technical problem of the inability to effectively improve the refresh rate of the display device, ultimately achieving the technical effect of effectively improving the refresh rate of the display device.

[0062] In this embodiment, the refresh rate can be the visual refresh rate of the display device, which can be a high grayscale visual refresh rate (also known as a high grayscale refresh rate) or a low grayscale visual refresh rate (also known as a low grayscale refresh rate), and no specific limitation is made here.

[0063] In steps S102 to S108 of this application, multiple scan lines of the display device are divided into multiple scan line groups. Different scan line groups correspond to different first subfield sequences. The first subfield sequence is used to represent the sequence in which multiple subframes are arranged in a first preset order when the target frame is divided into multiple subframes. Based on this, in multiple scan line groups, for the target scan line group where the current scan line of the display device belongs, at least one first target subframe that needs to be opened for the display device to display the grayscale of the current scan line can be determined in the first subfield sequence corresponding to the target scan line group. Thus, when the current scan line changes, the target scan line group to which the current scan line belongs can change. Since the opening time of the first target subframe in the first subfield sequence corresponding to different target scan line groups is different, the purpose of the first target subframe being opened at different times in different target scan lines is achieved. This is equivalent to increasing the number of times the display device turns on and off per frame, thereby improving the refresh rate of the display device without increasing the number of subframes. This avoids the significant reduction in display efficiency that would occur if the number of subframes were increased, and also avoids the situation where the refresh rate would not be effectively improved if the display device is inefficient when processing images at lower grayscale levels. This solves the technical problem that the refresh rate of the display device cannot be effectively improved, and thus achieves the technical effect of effectively improving the refresh rate of the display device.

[0064] The method described in this embodiment will be further described below.

[0065] In this embodiment, when the multiple scan lines of the display device are divided into multiple scan line groups, two adjacent scan lines may belong to different scan line groups, thereby achieving the purpose of staggered display of the first target subframe in different target scan lines. This will be further explained below.

[0066] As an optional implementation, multiple scan line groups are obtained by dividing multiple scan lines of the display device, with each pair of adjacent scan lines belonging to different scan line groups.

[0067] In this embodiment, multiple scan lines of the display device can be divided. Adjacent scan lines can be grouped into different scan line groups, resulting in multiple scan line groups. This prevents the first target subframe from being simultaneously activated in adjacent target scan lines. Since simultaneous activation increases the number of on / off cycles per frame, the refresh rate of the display device is improved without increasing the number of subframes. Further examples are provided below.

[0068] Figure 9 This is a schematic diagram of two scan line groups according to an embodiment of the present invention. Figure 9 As shown, the multiple scan lines of the display device may include scan 1, scan 2... scan 8. These multiple scan lines can be divided into two scan groups. Optionally, scan 1, scan 3, scan 5, and scan 7 are divided into the first scan line group, and scan 2, scan 4, scan 6, and scan 8 are divided into the second scan line group. Each pair of adjacent scan lines belongs to different scan line groups. For example, scan 1 and scan 2 are adjacent, but scan 1 belongs to the first scan line group, and scan 2 belongs to the second scan line group. This achieves the purpose of staggering the subfield 1' in scan 1, scan 2... scan 8, avoiding the situation where subframes are opened at the same time in different scan lines, resulting in a low refresh rate of the display device. This solves the technical problem that the refresh rate of the display device cannot be effectively improved, thus achieving the technical effect of effectively improving the refresh rate of the display device. Figure 9 The sequences including subfield 1' to subfield 16' in each scan line are for illustrative purposes only and do not limit the embodiments of the present invention.

[0069] Figure 10 This is a schematic diagram of a four-scan row group according to an embodiment of the present invention. Figure 10As shown, the multiple scan lines of the display device can include scan 1, scan 2... scan 8, which can be divided into four scan groups. Scan 1 and scan 5 can be grouped into the first scan line group, scan 2 and scan 6 into the second scan line group, scan 3 and scan 7 into the third scan line group, and scan 4 and scan 8 into the fourth scan line group. Each pair of adjacent scan lines belongs to different scan line groups. For example, scan 1 and scan 2 are adjacent, but scan 1 belongs to the first scan line group and scan 2 belongs to the second scan line group; similarly, scan 2 and scan 3 are adjacent, but scan 2 belongs to the second scan line group and scan 3 belongs to the third scan line group, and so on. This achieves the purpose of staggering the subfield 1' in scan 1, scan 2... scan 8, avoiding the situation where subframes are opened at the same time in different scan lines, resulting in a low refresh rate of the display device. This solves the technical problem of the display device's refresh rate not being effectively improved, thus achieving the technical effect of effectively improving the refresh rate of the display device. Figure 10 The sequences including subfield 1' to subfield 16' in each scan line are for illustrative purposes only and do not limit the embodiments of the present invention.

[0070] In this embodiment, the number of scan line groups of the display device can be determined first, and the multiple scan lines of the display device can be divided into multiple scan line groups based on the number of groups, thereby increasing the refresh rate of the display device to a refresh rate corresponding to the number of groups. This will be further explained below.

[0071] As an optional implementation, the method further includes: obtaining the target refresh rate of the target frame displayed by the display device; determining the number of scan line groups of the display device based on the target refresh rate, and grouping the scan lines of the display device according to the number of groups; step S104, determining the target scan line group in which the current scan line of the display device is located among the multiple scan line groups of the display device, including: finding the target scan line group in which the current scan line is located among the grouped scan line groups.

[0072] In this embodiment, the refresh rate improvement requirement of the display device can be determined, that is, the target refresh rate that the display device needs to meet to display the target frame can be determined. This target refresh rate can be N times the initial refresh rate of the display device, where N can be an integer greater than or equal to 1. This embodiment can determine the number of scan line groups of the display device based on the target refresh rate. For example, if N needs to be 2, then the number of groups can be 2, thereby achieving the goal of increasing the refresh rate of the display device to twice the refresh rate through 2 scan line groups; if N needs to be 4, then the number of groups can be 4, without specific limitations. After determining the number of scan line groups of the display device, multiple scan lines of the display device can be grouped according to the number of groups, thereby achieving the goal of increasing the refresh rate of the display device to four times the refresh rate through 4 scan line groups. Optionally, this embodiment groups multiple scan lines of the display device according to the above-mentioned number of groups and the principle that two adjacent scan lines belong to different scan line groups, resulting in multiple scan line groups.

[0073] Furthermore, in this embodiment, when determining the target scan line group in which the current scan line of the display device belongs among multiple scan line groups of the display device, it can be done by searching for the scan line group in which the current scan line belongs among the multiple scan line groups in which the scan lines of the display device have been grouped according to the group number, and determining the scan line group in which the current scan line belongs as the target scan line group. Since the multiple scan line groups in this embodiment are pre-grouped according to the group number of the display device, in subsequent stages, when determining the current scan line, it is only necessary to search for the scan line group in which the current scan line belongs among these multiple scan line groups to determine the target scan line group, thereby improving the determination of the target scan line group. The efficiency of the row group can be improved, and at least one first target subframe that needs to be opened to display the grayscale of the current scan row can be determined in the first subfield sequence corresponding to the target scan row group. Since the opening time of the first target subframe in the first subfield sequence corresponding to different target scan rows is different, the purpose of opening the first target subframe at different times in different target scan rows is achieved. This improves the refresh rate of the display device without increasing the number of subframes, and avoids greatly reducing the display efficiency of the display device when increasing the number of subframes. This solves the technical problem that the refresh rate of the display device cannot be effectively improved, and thus achieves the technical effect of effectively improving the refresh rate of the display device.

[0074] In this embodiment, to enable the display device to correctly display the grayscale of the current scan line, the light-emitting device that needs to be driven can be determined. In the first subfield sequence corresponding to the target scan line group, the subframe in which the light-emitting device emits light can be identified as the target subframe. This achieves the purpose of determining the target subframe that needs to be displayed in a staggered manner, thereby increasing the number of times the screen lights up and off per frame, thus improving the refresh rate of the display device. This will be further explained below.

[0075] As an optional implementation, step S106, in the first subfield sequence corresponding to the target scan line group, determines at least one first target subframe that the display device needs to open to display the grayscale of the current scan line, including: determining at least one first light-emitting device that the display device needs to drive to display the grayscale of the current scan line; and determining the subframe in the first subfield sequence corresponding to the target scan line group where the first light-emitting device emits light as the first target subframe.

[0076] In this embodiment, when determining at least one first target subframe to be opened for the display device to display the grayscale of the current scan line in the first subfield sequence corresponding to the target scan line group, the grayscale of the current scan line can be determined first. This grayscale can be grayscale 1, grayscale 2, grayscale 3, etc., without specific limitations. After determining the grayscale of the current scan line, at least one first light-emitting device to be driven for the display device to display the grayscale of the current scan line can be determined. This first light-emitting device can be an LED. That is, driving at least one first light-emitting device can achieve the purpose of the display device displaying the grayscale of the current scan line.

[0077] Optionally, the relationship between the grayscale of the current scan line and the driven first light-emitting device can be flexibly determined based on the setting information of the display device. Optionally, this embodiment can determine the first light-emitting device based on the grayscale of the current scan line displayed by the display device and the setting information of the display device.

[0078] After identifying at least one first light-emitting device, the subframe corresponding to the first light-emitting device when it is emitting light can be determined as the first target subframe in the first subfield sequence corresponding to the target scan line group. Since there is a correspondence between the light-emitting device and the subframe in which it emits light, this embodiment of the application improves the accuracy of determining the first target subframe by identifying the first light-emitting device that needs to be driven to display the grayscale of the current scan line in the first subfield sequence. Further examples are provided below.

[0079] like Figure 6 As shown, it is determined that the grayscale of the current scan line displayed by the display device is grayscale 1. In the temporal subfield arrangement corresponding to the target scan line group, the temporal subfield 1 corresponding to the emission of the first light-emitting device is determined as the first target subframe; as shown... Figure 7 As shown, it is determined that the grayscale of the current scan line displayed by the display device is grayscale 2. In the temporal subfield arrangement corresponding to the target scan line group, temporal subfield 1 and temporal subfield 9 corresponding to the emission of the first light-emitting device are determined as two first target subframes; as shown Figure 8As shown, the grayscale of the current scan line displayed by the display device is determined to be grayscale 3. In the temporal subfield arrangement corresponding to the target scan line group, the temporal subfield 1, temporal subfield 9 and temporal subfield 5 corresponding to the first light-emitting device are determined as three first target subframes, thereby achieving the purpose of accurately determining the target subframes that need to be staggered (also known as subfield staggering). Since the opening time of the first target subframes in the first subfield sequence corresponding to different target scan line groups is different, the number of times the screen is turned on and off per frame is increased, thereby achieving the effect of improving the refresh rate of the display device.

[0080] In this embodiment, to achieve the goal of opening the first target subframe, it is necessary to determine the opening time of the first target subframe. This will be further described below.

[0081] As an optional implementation, the method further includes: determining the first arrangement position of the first target subframe in the first subfield sequence corresponding to the target scan row group; and determining the time corresponding to the first arrangement position as the opening time of the first target subframe during the scanning time period of the current scan row.

[0082] In this embodiment, after determining the target scan line group in which the current scan line of the display device belongs among the multiple scan line groups of the display device, the first subfield sequence corresponding to the target scan line group can be determined. Since the first subfield sequence is used to represent the sequence in which multiple subframes are arranged according to a first preset order when the target frame is divided into multiple subframes, the first arrangement position of the first target subframe in the first subfield sequence corresponding to the target scan line group can be determined. Since the first subfield sequence is used to represent the sequence in which multiple subframes are arranged according to a first preset order when the target frame is divided into multiple subframes, and the multiple subframes include the first target subframe, the first arrangement position of the first target subframe is the sorting position of the first target subframe after the multiple subframes arranged according to the first preset order, such as the first position, the second position, ... the last position, etc.

[0083] In this embodiment, the target scan line group containing the current scan line corresponds to a first subfield sequence, which includes multiple subframes. The current scan line has a scan time period, so different first arrangement positions of the multiple subframes can correspond to different times within the scan time period of the current scan line. These multiple subframes include a first target subframe. After determining the first arrangement position of the first target subframe in the first subfield sequence corresponding to the target scan line group, the time corresponding to the first arrangement position within the scan time period of the current scan line can be determined as the opening time of the first target subframe in this embodiment. Since different first arrangement positions in this embodiment correspond to different times, that is, there is a one-to-one correspondence between the first arrangement position and the time, determining the time corresponding to the first arrangement position as the opening time of the first target subframe can improve the accuracy of determining the opening time of the first target subframe. Further examples are provided below.

[0084] Figure 11 This is a schematic diagram illustrating the determination of the opening time of a first target subframe according to an embodiment of the present invention. Figure 11 As shown, the first target subframe is explained as temporal subfield 1. The current scan line is the first scan, and the target scan line group includes the first, third, fifth, and seventh scans. The corresponding algorithmic subfield arrangements are subfield 1', subfield 9', subfield 5', subfield 10', subfield 3', subfield 11', subfield 6', subfield 12', subfield 2', subfield 13', subfield 7', subfield 14', subfield 4', subfield 15', subfield 8', and subfield 16'. Therefore, the first position of temporal subfield 1' in the temporal subfield arrangement can be determined as the first position. During the scanning time period of the current scan line, the time corresponding to the first position is determined as the opening time of the first target subframe.

[0085] For example, let's take the first target subframe as temporal subfield 9. The current scan is the 2nd scan, and the target scan line group includes the 2nd, 4th, 6th, and 8th scans. The corresponding algorithmic subfield arrangements are subfield 2', subfield 13', subfield 7', subfield 14', subfield 4', subfield 15', subfield 8', subfield 16', subfield 1', subfield 9', subfield 5', subfield 10', subfield 3', subfield 11', subfield 6', and subfield 12'. Therefore, we can determine that the temporal subfield 9 corresponding to subfield 1' is positioned as the ninth position in the temporal subfield arrangement. During the scanning time of the current scan line, the time corresponding to the ninth position is determined as the opening time of the first target subframe.

[0086] In this embodiment, a mapping relationship between different scan row groups and different first subfield sequences can be pre-defined, and then this mapping relationship can be used to determine the first subfield sequence corresponding to the target scan row group. This will be further explained below.

[0087] As an optional implementation, a mapping relationship is established between the group identifier of different scan row groups and the sequence identifier of different first subfield sequences. The group identifier is used to identify the corresponding scan row group, and the sequence identifier is used to identify the corresponding first subfield sequence. The method further includes: determining the target group identifier of the target scan row group; mapping the target group identifier to the target sequence identifier in the sequence identifiers of different first subfield sequences according to the mapping relationship corresponding to the target group identifier; and determining the first subfield sequence corresponding to the target sequence identifier as the first subfield sequence corresponding to the target scan row group.

[0088] In this embodiment, different scan line groups have group identifiers, which can be used to uniquely identify the corresponding scan line group. For example, scan line group A, which includes the 1st scan, the 3rd scan, the 5th scan, and the 7th scan, can be used to identify the corresponding scan line group. Scan line group B, which includes the 2nd scan, the 4th scan, the 6th scan, and the 8th scan, can be used to identify the corresponding scan line group.

[0089] Optionally, the different first subfield sequences in this embodiment have sequence identifiers, which can be used to uniquely identify the corresponding first subfield sequence, such as first subfield sequence C, first subfield sequence D, etc.

[0090] In this embodiment, a mapping relationship is established between the group identifiers of different scan row groups and the sequence identifiers of different first subfield sequences. For example, there is a mapping relationship between scan row group A and first subfield sequence C, and a mapping relationship between scan row group B and first subfield sequence D. This embodiment can determine the corresponding first subfield sequence based on the group identifiers of the scan row groups and the mapping relationship.

[0091] Optionally, this embodiment can determine the target group identifier of the target scan row group to which the current scan row of the display device belongs, and determine the mapping relationship corresponding to the target group identifier. Then, in the sequence identifiers of different first subfield sequences, the target group identifier can be mapped to a target sequence identifier according to the mapping relationship corresponding to the target group identifier. The first subfield sequence identified by the target sequence identifier is determined as the first subfield sequence corresponding to the target scan row group. Since the mapping relationship can be predetermined, when the group identifier of the scan row group is determined, the group identifier of the scan row group can be directly mapped according to the mapping relationship, thereby achieving the technical effect of quickly determining the corresponding first subfield sequence.

[0092] In this embodiment, the different numbers of scan rows and the different numbers of subframes can determine different first subfield sequences, which will be further explained below.

[0093] As an optional implementation, the method further includes: determining different first subfield sequences corresponding to different scan line groups based on the number of groups of multiple scan line groups and the number of multiple subframes.

[0094] In this embodiment, the number of multiple scan line groups and the number of multiple subframes can be determined. Based on the number of groups and the number of subframes, the temporal subfields corresponding to the scan line groups are determined, thereby forming the first subfield sequence through the determined temporal subfields. Further examples are provided below.

[0095] like Figure 11 As shown, this embodiment can determine that the number of multiple scan line groups is 2, and the number of multiple subframes (temporal subfields) is 16. Based on these 2 groups and 16 subfields, the algorithmic subfield arrangement corresponding to the first scan line group is determined to be subfield 1', subfield 9', subfield 5', subfield 10', subfield 3', subfield 11', subfield 6', subfield 12', subfield 2', subfield 13', subfield 7', subfield 14', subfield 4', subfield 15', subfield 8', and subfield 16'. Field 1' corresponds to time domain subfield 1, and the first subfield sequence is formed through this time domain subfield 1; the algorithm subfield arrangement corresponding to the second scan row group is determined as subfield 2', subfield 13', subfield 7', subfield 14', subfield 4', subfield 15', subfield 8', subfield 16', subfield 1', subfield 9', subfield 5', subfield 10', subfield 3', subfield 11', subfield 6', and subfield 12', where subfield 1' corresponds to time domain subfield 9, and the first subfield sequence is formed through this time domain subfield 9.

[0096] As an optional implementation, step S108, opening the first target subframe according to the opening time of the first target subframe, includes: driving the first light-emitting device corresponding to the current scan line according to the opening time of the first target subframe, wherein the first light-emitting device corresponding to the first target subframe is different in different current scan lines.

[0097] In this embodiment, when the first target subframe is opened according to its opening time, since the first target subframe is the subframe in which the first light-emitting device emits light, meaning there is a correspondence between the first target subframe and the first light-emitting device, this embodiment can drive the first light-emitting device corresponding to the current scan line to emit light according to the opening time of the first target subframe. That is, in the first target subframe, the first light-emitting device corresponding to the current scan line will be lit. In this embodiment, the first light-emitting device corresponding to the first target subframe is different in different current scan lines. Further examples will be provided below.

[0098] Figure 12 This is a schematic diagram of a light-emitting device that illuminates on a subframe according to an embodiment of the present invention. Figure 12As shown, in the first target subframe, the light-emitting devices corresponding to the first scan to the eighth scan will light up, and the light-emitting devices corresponding to the first scan to the eighth scan can be different.

[0099] The above describes the display control method of the display device when the display device performs row scanning of the target frame according to an embodiment of the present invention, in order to solve the technical problem that the refresh rate of the display device cannot be effectively improved, and thus achieve the technical effect of effectively improving the refresh rate of the display device. The following describes the display control method of the display device when the display device performs column scanning of the target frame according to this embodiment, in order to solve the technical problem of severe inter-channel coupling in the display device.

[0100] As an optional implementation, the method further includes: when the display device scans the target frame in columns, determining the current scanning column of the display device among multiple scanning columns, wherein different scanning columns correspond to different second subfield sequences, and the second subfield sequence is used to represent the sequence in which multiple subframes are arranged in a second preset order when the target frame is divided into multiple subframes; in the second subfield sequence corresponding to the current scanning column, determining at least one second target subframe that the display device needs to open to display the grayscale of the current scanning column, wherein the opening time of the second target subframes in different current scanning columns is different; and opening the second target subframes according to the opening time of the second target subframes.

[0101] In this embodiment, since each module of the display device can include several channels (scanning columns), the display device can perform column scanning on the target frame. Optionally, the scanning column scanned by the display device at the current moment can be determined as the current scanning column.

[0102] In this embodiment, different scan columns correspond to different second subfield sequences. The second subfield sequence is used to represent the sequence in which the target frame is divided into multiple subframes when the display device scans the target frame in columns. The multiple subframes are arranged in a second preset order. This can be called temporal subfield arrangement, which is related to the number of multiple subframes and the number of multiple scan columns. It can be flexibly set according to the actual application scenario of the display device without specific limitations. Figure 13 This is a schematic diagram illustrating the determination of the opening time of a second target subframe according to an embodiment of the present invention. Figure 13As shown, taking a subframe as an example, the display device includes channels one through sixteen. For subfields 1' to 16' (i.e., algorithmic subfields 1 to 16), channel one corresponds to time-domain subfield 1, which is used to form the second subfield sequence. The algorithmic subfields can be arranged in the order of subfield 1', subfield 9', subfield 5', subfield 10', subfield 3', subfield 11', subfield 6', subfield 12', subfield 2', subfield 13', subfield 7', subfield 14', subfield 4', subfield 15', subfield 8', and subfield 16'. The time-domain subfields corresponding to other channels, and the order of the corresponding subfields 1' to 16', are only examples and do not limit the embodiments of the present invention.

[0103] After determining the current scan column of the display device among multiple scan columns, in the second subfield sequence corresponding to the current scan column, at least one second target subframe that needs to be opened by the display device to display the grayscale of the current scan column is determined, wherein the opening time of the second target subframe is different in different current scan columns. This will be further explained below.

[0104] In this embodiment, within the second subfield sequence corresponding to the current scan column, at least one second target subframe that needs to be opened for the grayscale of the current scan row is determined. The multiple subframes of the target frame include the aforementioned at least one second target subframe, which can be the aforementioned temporal subfield. Opening the second target subframe can mean driving the light-emitting device on the current scan column to display within the second target subframe; that is, determining to drive the light-emitting device to emit light.

[0105] After determining at least one second target subframe that needs to be opened to display the grayscale of the current scan column in the second subfield sequence corresponding to the current scan column, the light-emitting device on the current scan column can be driven to display according to the opening time of the second target subframe.

[0106] In this embodiment, an independent second subfield sequence can be set for each scan column. The opening time of the second target subframe in different current scan columns is different. For example, when the display device displays the grayscale of the current scan column, only one second target subframe is opened in each time domain subfield. That is, all scan columns will not be opened at the same time, but will be opened in a staggered manner. In this way, the coupling between the channels of the display device will be very weak, thereby solving the technical problem of severe coupling between the channels of the display device.

[0107] As an optional implementation, in the second subfield sequence corresponding to the current scan column, determining at least one second target subframe that the display device needs to turn on to display the grayscale of the current scan column includes: determining at least one second light-emitting device that the display device needs to drive to display the grayscale of the current scan column; and determining the subframe in the second subfield sequence corresponding to the current scan column where the second light-emitting device emits light as the second target subframe.

[0108] In this embodiment, when determining at least one second target subframe that needs to be turned on to display the grayscale of the current scan column in the second subfield sequence corresponding to the current scan column, the grayscale of the current scan column can be determined first. After determining the grayscale of the current scan column, at least one second light-emitting device that needs to be driven to display the grayscale of the current scan column can be determined. This second light-emitting device can be an LED. That is, driving at least one second light-emitting device can achieve the purpose of displaying the grayscale of the current scan column.

[0109] Optionally, the relationship between the grayscale of the currently scanned column and the driven second light-emitting device displayed by the display device can be flexibly determined based on the display device's setting information. Optionally, this embodiment can determine the second light-emitting device based on the grayscale of the currently scanned column displayed by the display device and the display device's setting information.

[0110] After identifying at least one second light-emitting device, the subframe in which the second light-emitting device emits light can be determined as the second target subframe in the second subfield sequence corresponding to the current scan column. Since there is a correspondence between the light-emitting device and the subframe in which it emits light, this embodiment of the application improves the accuracy of determining the second target subframe by identifying the second light-emitting device required to drive the grayscale of the current scan row through the display device and determining the second target subframe to be turned on in the second subfield sequence.

[0111] As an optional implementation, the method further includes: determining the second arrangement position of the second target subframe in the second subfield sequence corresponding to the current scan column; and determining the time corresponding to the second arrangement position as the opening time of the second target subframe during the scanning time period of the current scan column.

[0112] In this embodiment, after determining the current scan column of the display device, the second subfield sequence corresponding to the current scan column can be determined. Since the second subfield sequence represents the sequence in which multiple subframes are arranged according to a second preset order when the target frame is divided into multiple subframes, the second arrangement position of the second target subframe in the second subfield sequence corresponding to the current scan column can be determined. Because the second subfield sequence represents the sequence in which multiple subframes are arranged according to a second preset order when the target frame is divided into multiple subframes, and the multiple subframes include the second target subframe, the second arrangement position of the second target subframe is its sorting position after the multiple subframes arranged according to the second preset order, such as first position, second position, ... last position, etc.

[0113] In this embodiment, the current scan column corresponds to a second subfield sequence, which includes multiple subframes, including a second target subframe. The current scan row has a scan time period, so different second arrangement positions of the multiple subframes can correspond to different times within the scan time period of the current scan column. After determining the second arrangement position of the second target subframe in the second subfield sequence, the time corresponding to the aforementioned second arrangement position within the scan time period of the current scan column can be determined as the opening time of the second target subframe in this embodiment. Since different second arrangement positions in this embodiment correspond to different times—that is, there is a one-to-one correspondence between the second arrangement position and the time—determining the time corresponding to the aforementioned second arrangement position as the opening time of the second target subframe can improve the accuracy of determining the opening time of the second target subframe. Further examples are provided below.

[0114] like Figure 13 As shown, the second target subframe is time-domain subfield 1, and the current scan column is channel one. Its corresponding algorithmic subfield arrangement includes subfields 1', 9', 5', 10', 3', 11', 6', 12', 2', 13', 7', 14', 4', 15', 8', and 16'. Therefore, the second arrangement position of time-domain subfield 1 corresponding to subfield 1' in the time-domain subfield arrangement can be determined as the first position. During the scanning time period of the current scan column, the time corresponding to the first position is determined as the opening time of the second target subframe. The opening times of the second target subframes for other channels are merely examples and do not limit the embodiments of this invention.

[0115] As an optional implementation, the method further includes: determining different second subfield sequences corresponding to different scan columns based on the number of multiple scan columns and the number of multiple subframes.

[0116] In this embodiment, the number of multiple scan columns and the number of multiple subframes can be determined. Based on the number of columns and the number of subframes, the temporal subfields corresponding to the scan columns are determined, thereby constructing a second subfield sequence through the determined temporal subfields. Further examples are provided below.

[0117] like Figure 13 As shown, this embodiment can determine that the number of multiple scan columns is 16 (i.e., 16 channels) and the number of multiple subframes is 16. Based on these 16 channels and 16 subframes, the algorithm subfield arrangement corresponding to channel one is determined as subfield 1', subfield 9', subfield 5', subfield 10', subfield 3', subfield 11', subfield 6', subfield 12', subfield 2', subfield 13', subfield 7', subfield 14', subfield 4', subfield 15', subfield 8', and subfield 16'. Subfield 1' corresponds to temporal subfield 1, which forms the second subfield sequence. The second subfield sequences corresponding to other channels are similar and will not be described further here.

[0118] In this embodiment, different scan columns of the display device correspond to different second sub-field sequences. These second sub-field sequences represent the sequence in which multiple sub-frames are arranged according to a second preset order when the target frame is divided into multiple sub-frames. Based on this, at least one second target sub-frame that needs to be opened to display the grayscale of the current scan column can be determined from the second sub-field sequence corresponding to the current scan column. Thus, when the current scan column changes, the opening time of the second target sub-frames in different current scan columns differs, achieving the goal of the second target sub-frames not opening simultaneously in different current scan columns. This improves the refresh rate of the display device without increasing the number of sub-frames, avoiding a significant reduction in display efficiency due to increasing the number of sub-frames. Furthermore, it avoids all scan columns opening simultaneously, which would result in weak coupling between display device channels, thereby solving the technical problem of severe inter-channel coupling in the display device and reducing the degree of inter-channel coupling.

[0119] The above is an introduction to the display control method of the display device in the case where the display device performs column scanning of the target frame according to an embodiment of the present invention. The display driving circuit of the present invention embodiment is described below, wherein the driving circuit may be an LED display driving circuit. It can be used to execute the display control method of the display device according to the present invention embodiment.

[0120] Figure 14 This is a schematic diagram of a display driving circuit according to an embodiment of the present invention. Figure 14 As shown. The display driving circuit 140 may include: a clock generation unit 141, a storage unit 142, a pulse width modulation unit 143, and a channel driving current source 144.

[0121] Clock generation unit 141 is used to provide a global clock signal.

[0122] In this embodiment, the clock generation unit 141 can be used to generate a global clock signal. Optionally, the clock generation unit 141 can generate a global clock signal used by the driving circuit based on an external reference clock; or it can generate a global clock signal through a built-in oscillator.

[0123] Storage unit 142 is connected to clock generation unit 141 and is used to store grayscale data corresponding to the target frame to be processed by the display device based on the global clock signal.

[0124] In this embodiment, the storage unit 142 can be connected to the clock generation unit 141 to store grayscale data corresponding to the target frame to be processed by the display device based on the global clock signal.

[0125] The pulse width modulation unit 143, connected to the storage unit 142, is used to generate a first subfield sequence corresponding to each of the multiple scan line groups in the display device according to the grayscale data provided by the storage unit. Each scan line group includes at least one scan line of the display device, and the number of scan lines included in each scan line group is different. Different scan line groups correspond to different first subfield sequences. The first subfield sequence represents the sequence in which the multiple subframes are arranged according to a first preset order when the target frame is divided into multiple subframes. See step S104 for further details.

[0126] In this embodiment, the pulse width modulation unit 143 can be connected to the clock generation unit 141 and the storage unit 142, and can generate the first subfield sequence corresponding to each of the multiple scan row groups in the display device according to the grayscale data provided by the storage unit 142.

[0127] The channel driving current source 144 is connected to the pulse width modulation unit 143 and is used to drive at least one first light-emitting device to open at least one first target subframe according to the opening time of at least one first target subframe based on the current data used by at least one first target subframe in multiple subframes. The first target subframe is the subframe that the display device needs to open to display the grayscale of the current scan line in the first subfield sequence corresponding to the target scan line group in multiple scan line groups. The target scan line group includes the current scan line, and the opening time of the first target subframe in different target scan line groups is different.

[0128] In this embodiment, the channel driving current source 144 is connected to the pulse width modulation unit 143. Based on the current data used by at least one first target subframe among multiple subframes, it can drive at least one corresponding first light-emitting device to turn on at least one first target subframe according to the turn-on time of at least one first target subframe. The descriptions of steps S106 and S108 are provided here and will not be repeated.

[0129] In this embodiment, the storage unit, pulse width modulation unit, and channel drive current source in the display driving circuit can be configured with an independent subfield arrangement calculation circuit for each channel, so that the algorithm subfield arrangement order of different channels is different. In this way, the refresh rate of the display device is improved without increasing the number of subframes, avoiding the significant reduction in display efficiency of the display device when increasing the number of subframes, and avoiding the simultaneous opening of all scan columns, which would result in weak coupling between the channels of the display device. This solves the technical problem of severe inter-channel coupling in the display device and reduces the degree of inter-channel coupling in the display device.

[0130] Figure 15 This is a schematic diagram of another display driving circuit according to an embodiment of the present invention. Figure 15 As shown, the display driving circuit may include: a clock generation unit 151, an interface unit 152, a storage unit 153, a configuration register 154, a pulse width modulation unit 155, and a channel driving current source 156.

[0131] The clock generation unit 151 is used to generate a global clock signal for the drive circuit based on an external reference clock; or to generate a global clock signal through a built-in oscillator.

[0132] Interface unit 152 is connected to clock generation unit 151, configuration register 154 and storage unit 153. It is used to receive display data information through the port and write it into storage unit 153, and finally provide it to pulse width modulation unit 155. It can receive configuration information through the port and store it in configuration register 154.

[0133] The storage unit 153 is connected to the clock generation unit 151 and the pulse width modulation unit 155, and can be used to store and display grayscale data and current data; the storage unit 153 can be one or multiple units.

[0134] Configuration register 154, connected to clock generation unit 151 and pulse width modulation unit 155, can be used to store and provide drive circuit configuration information.

[0135] The pulse width modulation unit 155 is connected to the clock generation unit 151, the storage unit 153, the configuration register 154 and the pulse width compensation unit. It can be used to generate channel pulse width modulation signals to control the LED switch according to the display data provided by the storage unit 153, and can realize different sub-field arrangement order for different channels.

[0136] The channel drive current source 156 is connected to the configuration register 154. In this embodiment, the channel drive current source 156 can be controlled to turn on and off according to the compensated pulse width modulation signal output by the pulse width compensation unit.

[0137] Figure 16 This is a schematic diagram of a subfield arrangement computing circuit architecture according to an embodiment of the present invention. Figure 16 As shown, the display data storage unit (PWM_SRAM) is used to provide a storage interface to store display data.

[0138] The pulse width scattering algorithm circuits A1 to A16 (pulse width modulation units) can be used to set the number of channels and pulse width scattering algorithm circuits. Each scattering circuit is different from the others, so as to set different algorithm subfield arrangement order for each channel. The PWM_SRAM is connected to the above different pulse width scattering algorithm circuits through the corresponding pulse width modulation data line PWM_DATA. PWM_DATA can include PWM_DATA 1A′ to PWM_DATA 16A′.

[0139] The constant current drive circuits B1 to B16 (channel drive current sources) can be used to set the number of channels. The constant current drive circuits can turn on or off the corresponding channels according to the channel opening indication signal generated by the corresponding pulse width scattering algorithm circuit. Different constant current drive circuits and different pulse width scattering algorithm circuits are connected through the pulse width modulation enable signal line PWM_EN. PWM_EN can include PWM_EN 1b to PWM_EN 16b. The constant current drive circuits output data through the data channel CHN, which includes CHN 1a to CHN 16a.

[0140] In this embodiment, the display data storage unit can be connected to all pulse width scattering algorithm circuits. When the circuit operates, it reads the display data corresponding to each channel from the display data storage unit and sends it to the corresponding pulse width scattering algorithm circuit. Each pulse width scattering algorithm circuit can be connected to its corresponding constant current drive circuit. After receiving the display data, each pulse width scattering algorithm circuit generates a channel opening indication signal according to its corresponding subfield arrangement order and sends it to its corresponding constant current drive circuit. Upon receiving its corresponding channel opening indication signal, each constant current drive circuit can control the opening or closing of the corresponding channel.

[0141] In this embodiment, since the subfield arrangement order of each pulse width scattering algorithm circuit is different, the subfield staggering of each channel can be achieved, that is, the subfield arrangement order of each channel is different.

[0142] The technical solutions of the present invention will be illustrated below with reference to preferred embodiments.

[0143] In this embodiment, LED lights are increasingly widely used in large-screen display products such as LED displays and LED backlights. For example, a large-screen display product can be a large-screen LED display system, which can include the aforementioned display device. This system can be composed of multiple cabinets, each cabinet can be composed of multiple LED modules, and each LED module can contain several channels and several scan lines.

[0144] When an LED module is displaying a display, it divides one frame of the display into several subfields. The more subfields there are, the higher the refresh rate of the display device will be. However, increasing the number of subfields can only improve the high grayscale refresh rate, not the low grayscale refresh rate; at the same time, increasing the number of subfields will greatly reduce the display efficiency.

[0145] Furthermore, when an LED module is in operation, voltage changes in the channels cause coupling between them. The magnitude of this coupling is closely related to the number of channels that are simultaneously on or off. The more channels that are simultaneously on or off, the stronger the coupling between them; conversely, the fewer channels that are simultaneously on or off, the weaker the coupling. This coupling is particularly noticeable when the LED module displays low-grayscale images.

[0146] Figure 17 This is a schematic diagram based on a subfield arrangement in related technologies. For example... Figure 17 As shown, the subfield arrangement scheme is that all scan lines use the same subfield arrangement order. This will cause all scan pixels to be displayed in the same subfield when the display device displays grayscale 1, resulting in a very low visual refresh rate.

[0147] Figure 18 This is a schematic diagram based on another subfield arrangement in related technologies. For example... Figure 18 As shown, the subfield arrangement scheme causes all channels to use the same subfield arrangement order. This results in all channels being turned on simultaneously when the display device is displaying grayscale 1, leading to very high coupling between channels.

[0148] To address the aforementioned issue of low visual refresh rate for low grayscale, this embodiment of the application divides the multiple scan lines of the display device into two scan line groups, with different sub-field arrangements in different scan line groups. This allows the first target subframe of different scan line groups to be opened at different times when the display device displays a grayscale level, effectively doubling the visual refresh rate of the display device. This method improves the visual refresh rate for low grayscale without increasing the number of sub-fields or reducing the display efficiency of the device.

[0149] As another alternative example, this embodiment of the application can divide the multiple scan lines of the display device into 4 groups, and the subfield arrangement order of different scan line groups is different; when displaying 1 grayscale, the first target subframe of different scan line groups can be opened at different times, the visual refresh rate can be increased by 4 times, the visual refresh rate of low grayscale can be improved, and the number of subfields will not be increased, and the display efficiency will not be reduced.

[0150] In this embodiment, an independent subfield arrangement order can be set for each channel, with different subfield arrangement orders for different channels. When displaying a grayscale level of 1, only one channel in each subfield is open, thereby reducing the coupling between channels.

[0151] This invention also provides a display control device for a display device. This display control device can be used to execute the embodiments of this invention. Figure 1 The display control method of the display device shown.

[0152] Figure 19 This is a schematic diagram of a display control device for a display device according to an embodiment of the present invention. Figure 19 As shown, the display control device 190 of the display device may include: an acquisition unit 191, a first determination unit 192, a second determination unit 193, and an opening unit 194.

[0153] Acquisition unit 191 is used to acquire the target frame to be processed by the display device.

[0154] The first determining unit 192 is used to determine, when the display device scans the target frame, the target scan line group in which the current scan line of the display device is located among multiple scan line groups of the display device, wherein each scan line group includes at least one scan line of the display device, each scan line group includes different scan lines, and different scan line groups correspond to different first subfield sequences. The first subfield sequence is used to represent the sequence in which multiple subframes are arranged in a first preset order when the target frame is divided into multiple subframes.

[0155] The second determining unit 193 is used to determine, in the first subfield sequence corresponding to the target scan row group, at least one first target subframe that the display device needs to open to display the grayscale of the current scan row, wherein the opening time of the first target subframe is different in different target scan row groups.

[0156] The opening unit 194 is used to open the first target subframe according to the opening time of the first target subframe.

[0157] Optionally, the multiple scan line groups are obtained from multiple scan lines of the display device, and each pair of adjacent scan lines in the multiple scan lines belongs to different scan line groups.

[0158] Optionally, the device further includes: a first acquisition unit, configured to acquire the target refresh rate of the target frame displayed by the display device; a third determination unit, configured to determine the number of groups of the scan line groups of the display device based on the target refresh rate, and group the multiple scan lines of the display device according to the number of groups; the first determination unit 192 includes: a first determination module, configured to find the target scan line group in which the current scan line is located among the grouped scan line groups.

[0159] Optionally, the second determining unit 193 includes: a second determining module, used to determine at least one first light-emitting device that needs to be driven to display the grayscale of the current scan line of the display device; and a third determining module, used to determine the subframe in which the first light-emitting device emits light in the first subfield sequence corresponding to the target scan line group as the first target subframe.

[0160] Optionally, the device further includes: a fourth determining unit, configured to determine the first arrangement position of the first target subframe in the first subfield sequence corresponding to the target scan row group; and a fifth determining unit, configured to determine the time corresponding to the first arrangement position as the opening time of the first target subframe during the scanning time period of the current scan row.

[0161] Optionally, a mapping relationship is established between the group identifiers of different scan line groups and the sequence identifiers of different first subfield sequences. The group identifier is used to identify the corresponding scan line group, and the sequence identifier is used to identify the corresponding first subfield sequence. The device further includes: a fifth determining unit for determining the target group identifier of the target scan line group; a mapping unit for mapping the target group identifier to the target sequence identifier in the sequence identifiers of different first subfield sequences according to the mapping relationship corresponding to the target group identifier; and a sixth determining unit for determining the first subfield sequence corresponding to the target sequence identifier as the first subfield sequence corresponding to the target scan line group.

[0162] Optionally, the device further includes a seventh determining unit, configured to determine different first subfield sequences corresponding to different scan row groups based on the number of groups of multiple scan row groups and the number of multiple subframes.

[0163] Optionally, the opening unit 194 includes an opening module, configured to drive the first light-emitting device corresponding to the current scan line to emit light according to the opening time of the first target subframe, wherein the first light-emitting device corresponding to the first target subframe is different in different current scan lines.

[0164] Optionally, the device further includes: an eighth determining unit, configured to determine the current scanning column of the display device among multiple scanning columns when the display device scans the target frame in columns, wherein different scanning columns correspond to different second subfield sequences, and the second subfield sequence is used to represent the sequence in which multiple subframes are arranged in a second preset order when the target frame is divided into multiple subframes; a ninth determining unit, configured to determine, in the second subfield sequence corresponding to the current scanning column, at least one second target subframe that the display device needs to open to display the grayscale of the current scanning column, wherein the opening time of the second target subframes in different current scanning columns is different; and a first opening unit, configured to open the second target subframe according to the opening time of the second target subframe.

[0165] Optionally, the ninth determining unit includes: a fourth determining module, used to determine at least one second light-emitting device that needs to be driven for the display device to display the grayscale of the current scan column; and a fifth determining module, used to determine the subframe in the second subfield sequence corresponding to the current scan column where the second light-emitting device emits light as the second target subframe.

[0166] Optionally, the device further includes: a tenth determining unit, configured to determine the second arrangement position of the second target subframe in the second subfield sequence corresponding to the current scan column; and an eleventh determining unit, configured to determine the time corresponding to the second arrangement position as the opening time of the second target subframe during the scanning time period of the current scan column.

[0167] Optionally, the device further includes an eleventh determining unit, used to determine different second subfield sequences corresponding to different scan columns based on the number of columns of multiple scan columns and the number of multiple subframes.

[0168] In the display control device of the display device in this embodiment, the multiple scan lines of the display device are divided into multiple scan line groups. Different scan line groups correspond to different first subfield sequences. The first subfield sequence is used to represent the sequence in which multiple subframes are arranged in a first preset order when the target frame is divided into multiple subframes. Based on this, in multiple scan line groups, for the target scan line group where the current scan line of the display device belongs, at least one first target subframe that needs to be opened for the display device to display the grayscale of the current scan line can be determined in the first subfield sequence corresponding to the target scan line group. Thus, when the current scan line changes, the target scan line group to which the current scan line belongs can change. Since the opening time of the first target subframe in the first subfield sequence corresponding to different target scan line groups is different, the purpose of the first target subframe being opened at different times in different target scan lines is achieved. This is equivalent to increasing the number of times the display device turns on and off per frame, thereby improving the refresh rate of the display device without increasing the number of subframes. This avoids the significant reduction in display efficiency that would occur if the number of subframes were increased, and also avoids the situation where the refresh rate would not be effectively improved if the display device is inefficient when processing images at lower grayscale levels. This solves the technical problem that the refresh rate of the display device cannot be effectively improved, and thus achieves the technical effect of effectively improving the refresh rate of the display device.

[0169] According to embodiments of the present invention, a computer-readable storage medium is also provided. The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device where the computer-readable storage medium is located to perform the display control method of the display device according to embodiments of the present invention.

[0170] According to embodiments of the present invention, a computer program product is also provided. This computer and program product may include a computer program, which, when executed by a processor, implements the display control method of the display device according to embodiments of the present invention.

[0171] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0172] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0173] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0174] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0175] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0176] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0177] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A display control method for a display device, characterized in that, include: Obtain the target frame to be processed by the display device; When the display device scans the target frame, the target scan line group in which the current scan line of the display device is located among the multiple scan line groups of the display device is determined. Each scan line group includes at least one scan line of the display device. Each scan line group includes different scan lines. Different scan line groups correspond to different first subfield sequences. The first subfield sequence is used to represent the sequence in which the multiple subframes are arranged in a first preset order when the target frame is divided into multiple subframes. In the first subfield sequence corresponding to the target scan row group, at least one first target subframe that needs to be opened for the display device to display the grayscale of the current scan row is determined, wherein the opening time of the first target subframe is different in different target scan row groups; The first target subframe is opened according to the opening time of the first target subframe.

2. The method according to claim 1, characterized in that, The plurality of scan line groups are obtained by dividing the plurality of scan lines of the display device, and each pair of adjacent scan lines in the plurality of scan lines belongs to different scan line groups.

3. The method according to claim 1, characterized in that, The method further includes: Obtain the target refresh rate of the target frame displayed on the display device; Based on the target refresh rate, determine the number of groups for the scan lines of the display device, and group the multiple scan lines of the display device according to the number of groups; Determining the target scan line group in which the current scan line of the display device is located among the multiple scan line groups of the display device includes: finding the target scan line group in which the current scan line is located among the scan line groups that have been grouped.

4. The method according to claim 1, characterized in that, In the first subfield sequence corresponding to the target scan line group, determining at least one first target subframe that the display device needs to open to display the grayscale of the current scan line includes: Determine the grayscale of the current scan line to be displayed by the display device, and the at least one first light-emitting device to be driven. In the first subfield sequence corresponding to the target scan row group, the subframe in which the first light-emitting device emits light is determined as the first target subframe.

5. The method according to claim 1, characterized in that, The method further includes: Determine the first arrangement position of the first target subframe in the first subfield sequence corresponding to the target scan row group; During the scanning time period of the current scan row, the time corresponding to the first arrangement position is determined as the opening time of the first target subframe.

6. The method according to claim 1, characterized in that, A mapping relationship is established between the group identifiers of different scan row groups and the sequence identifiers of different first subfield sequences. The group identifier is used to identify the corresponding scan row group, and the sequence identifier is used to identify the corresponding first subfield sequence. The method further includes: Determine the target group identifier of the target scan row group; In the sequence identifiers of different first subfield sequences, the target group identifier is mapped to the target sequence identifier according to the mapping relationship corresponding to the target group identifier; The first subfield sequence corresponding to the target sequence identifier is determined as the first subfield sequence corresponding to the target scan row group.

7. The method according to claim 1, characterized in that, The method further includes: Based on the number of the multiple scan line groups and the number of the multiple subframes, different first subfield sequences corresponding to different scan line groups are determined.

8. The method according to claim 1, characterized in that, Opening the first target subframe according to the opening time of the first target subframe includes: According to the opening time of the first target subframe, the first light-emitting device corresponding to the current scan line is driven to emit light, wherein the first light-emitting device corresponding to the first target subframe is different in different current scan lines.

9. The method according to any one of claims 1 to 8, characterized in that, The method further includes: When the display device scans the target frame in columns, the current scanning column of the display device in multiple scanning columns is determined, wherein different scanning columns correspond to different second subfield sequences, and the second subfield sequence is used to represent the sequence in which the multiple subframes are arranged in a second preset order when the target frame is divided into multiple subframes; In the second subfield sequence corresponding to the current scan column, at least one second target subframe that the display device needs to open to display the grayscale of the current scan column is determined, wherein the opening time of the second target subframe is different in different current scan columns; The second target subframe is opened according to the opening time of the second target subframe.

10. The method according to claim 9, characterized in that, In the second subfield sequence corresponding to the current scan column, determining at least one second target subframe that the display device needs to open to display the grayscale of the current scan column includes: Determine at least one second light-emitting device that needs to be driven to display the grayscale of the currently scanned column; In the second subfield sequence corresponding to the current scan column, the subframe in which the second light-emitting device emits light is determined as the second target subframe.

11. The method according to claim 9, characterized in that, The method further includes: Determine the second arrangement position of the second target subframe in the second subfield sequence corresponding to the current scan column; During the scanning time period of the current scan column, the time corresponding to the second arrangement position is determined as the opening time of the second target subframe.

12. The method according to claim 9, characterized in that, The method further includes: Based on the number of columns in the plurality of scan columns and the number of subframes, different second subfield sequences corresponding to different scan columns are determined.

13. A display control device for a display equipment, characterized in that, include: The acquisition unit is used to acquire the target frame to be processed by the display device. The first determining unit is configured to, when the display device scans the target frame, determine the target scan line group in which the current scan line of the display device is located among the multiple scan line groups of the display device, wherein each scan line group includes at least one scan line of the display device, each scan line group includes different scan lines, and different scan line groups correspond to different first subfield sequences, the first subfield sequence being used to represent the sequence in which the multiple subframes are arranged according to a first preset order when the target frame is divided into multiple subframes; The second determining unit is configured to determine, in the first subfield sequence corresponding to the target scan row group, at least one first target subframe that the display device needs to open to display the grayscale of the current scan row, wherein the opening time of the first target subframe is different in different target scan row groups; An opening unit is configured to open the first target subframe according to the opening time of the first target subframe.

14. A display driving circuit, characterized in that, include: Clock generation unit, used to provide global clock signal; A storage unit, connected to the clock generation unit, is used to store grayscale data corresponding to the target frame to be processed by the display device based on the global clock signal; A pulse width modulation unit, connected to the storage unit, is used to generate a first subfield sequence corresponding to each of the multiple scan line groups in the display device according to the grayscale data provided by the storage unit. Each scan line group includes at least one scan line of the display device. The scan lines included in each scan line group are different. Different scan line groups correspond to different first subfield sequences. The first subfield sequence is used to represent the sequence in which the multiple subframes are arranged in a first preset order when the target frame is divided into multiple subframes. A channel driving current source, connected to the pulse width modulation unit, is used to drive at least one corresponding first light-emitting device to open at least one first target subframe according to the opening time of at least one first target subframe based on the current data used by at least one first target subframe among the plurality of subframes. The first target subframe is the subframe that the display device needs to open to display the grayscale of the current scan line in the first subfield sequence corresponding to the target scan line group among the plurality of scan line groups. The target scan line group includes the current scan line, and the opening time of the first target subframe is different in different target scan line groups.

15. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device on which the computer-readable storage medium is located to perform the method according to any one of claims 1 to 12.

16. A computer program product, characterized in that, It includes a computer program that, when executed by a processor, implements the method described in any one of claims 1 to 12.

Images