A display device, a driving method thereof, a computer readable storage medium, and a computer program product

Abstract

The application provides a display device and a driving method thereof, a computer readable storage medium and a computer program product; in the display device provided in the embodiment of the application, after detecting that the refresh rate is periodically changed, the compensation refresh rate can be output according to the real-time refresh rate, and the charging time is adjusted in time according to the compensation refresh rate, so that the charging rate difference of positive and negative frame display pictures is reduced, thereby improving the charge residue problem caused by the large charging time difference of positive and negative frames in the display panel, improving the afterimage in the display picture, and improving the display effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display device and a driving method thereof, a computer readable storage medium and a computer program product. BACKGROUND

[0002] With the development of display technology, the types of display products are gradually increasing, and the performance requirements are gradually increasing. For a variable refresh rate display device, when it is applied in an e-sports product, in the case where the game has not started, the refresh rate is periodically cycled at a plurality of fixed frequencies. At this time, due to the difference in refresh rate, the positive and negative frame display charging time is quite different, and the charge residual in the display panel in a short time is easy to cause liquid crystal polarization, thereby causing the problem of residual image. SUMMARY

[0003] Embodiments of the present application provide a display device and a driving method thereof, a computer readable storage medium and a computer program product. The display device can adjust the charging time in time after detecting that the refresh rate is periodically changed, thereby improving the charge residual problem in the display panel, improving the residual image in the display picture, and improving the display effect.

[0004] Embodiments of the present application adopt the following technical solutions:

[0005] In a first aspect, the embodiments of the present application provide a display device, comprising: a system chip, a circuit board, a driving board and a display panel, the system chip is electrically connected with the circuit board, the circuit board is electrically connected with the driving board, and the driving board is electrically connected with the display panel;

[0006] The system chip is configured to detect the real-time refresh rate of the display panel, and output a compensation refresh rate according to the real-time refresh rate after detecting that the real-time refresh rate is periodically changed;

[0007] The circuit board is configured to adjust the charging time of a sub-pixel in the display panel according to the compensation refresh rate, and generate a voltage control signal according to the charging time; and is further configured to store a preset relationship between refresh rate data and the charging time; the refresh rate data includes the real-time refresh rate and the compensation refresh rate;

[0008] The driving board is configured to generate a data signal according to the voltage control signal;

[0009] The display panel is configured to obtain a pixel voltage based on the data signal, and perform picture display according to the pixel voltage.

[0010] In the display device provided by some embodiments of the present application, the system chip includes a detection module, an information processing module and an output module,

[0011] The detection module is configured to detect the real-time refresh rate;

[0012] The information processing module, in electrical connection with the detection module, is configured to acquire the real-time refresh rate data, and after detecting that the real-time refresh rate data is periodically changed, to calculate a compensation refresh rate according to the real-time refresh rate;

[0013] The output module, in electrical connection with the information processing module and the circuit board respectively, is configured to output the compensation refresh rate to the circuit board.

[0014] In the display device provided in some embodiments of the present application, the information processing module comprises an inversion submodule configured to perform inversion processing on the real-time refresh rate according to the real-time refresh rate of an nth time period, and output the compensation refresh rate of an (n+1)th time period, the real-time refresh rate of the nth time period consuming a time greater than or equal to the time consumed by the compensation refresh rate of the (n+1)th time period.

[0015] n is an odd number, and the time period is at least one period of time consumed by the real-time refresh rate.

[0016] In the display device provided in some embodiments of the present application, the compensation refresh rate of the (n+1)th time period is configured to compensate for the real-time refresh rate of the nth time period.

[0017] In the display device provided in some embodiments of the present application, the real-time refresh rate of the nth time period and the compensation refresh rate of the (n+1)th time period consume the same time, and the real-time refresh rate of the nth time period and the compensation refresh rate of the (n+1)th time period have the same period and opposite phases.

[0018] In the display device provided in some embodiments of the present application, the information processing module comprises a copy submodule configured to perform selective copy processing according to the real-time refresh rate and output a compensation refresh rate with an unchanged refresh rate.

[0019] In the display device provided in some embodiments of the present application, one period of the real-time refresh rate comprises a first refresh rate and a second refresh rate, and the copy submodule is configured to selectively copy the first refresh rate and cover the second refresh rate; or the copy submodule is configured to selectively copy the second refresh rate and cover the first refresh rate.

[0020] In the display device provided in some embodiments of the present application, the information processing module comprises an interpolation submodule configured to insert at least one compensation refresh rate with a preset value between two adjacent real-time refresh rates according to the real-time refresh rate.

[0021] The real-time refresh rate of one period includes a first refresh rate and a second refresh rate, and the preset compensation refresh rate is between the values of the first refresh rate and the second refresh rate.

[0022] In the display device provided by some embodiments of the present application, the time period is less than or equal to the time consumed by the real-time refresh rate that is periodically changed.

[0023] In the display device provided by some embodiments of the present application, the display panel is a liquid crystal display panel, and the range of the real-time refresh rate of one period includes 48 Hz-120 Hz.

[0024] In a second aspect, embodiments of the present application provide a driving method of a display device, the display device including a system chip, a circuit board, a driving board and a display panel, the system chip being electrically connected with the circuit board, the circuit board being electrically connected with the driving board, and the driving board being electrically connected with the display panel.

[0025] The method includes:

[0026] The system chip detects a real-time refresh rate of a display panel in the display device.

[0027] In a case where the real-time refresh rate is periodically changed, the system chip outputs a compensation refresh rate according to the real-time refresh rate.

[0028] The circuit board adjusts a charging time of a sub-pixel in the display panel according to the compensation refresh rate, and generates a voltage control signal according to the charging time; wherein the circuit board has stored in advance a preset relationship between refresh rate data and the charging time, and the refresh rate data includes the real-time refresh rate and the compensation refresh rate.

[0029] The driving board generates a data signal according to the voltage control signal.

[0030] The display panel acquires a pixel voltage based on the data signal, and performs picture display according to the pixel voltage.

[0031] In the driving method provided by some embodiments of the present application, in the case where the real-time refresh rate is periodically changed, the step of outputting a compensation refresh rate according to the real-time refresh rate by the system chip specifically includes:

[0032] inverting the real-time refresh rate according to the real-time refresh rate of the nth time period to output the compensation refresh rate of the (n+1)th time period;

[0033] Wherein, n is an odd number, the time period is the time consumed by at least one period of real-time refresh rate; the real-time refresh rate of the nth time period and the compensation refresh rate of the n+1th time period consume the same time; the real-time refresh rate of the nth time period and the compensation refresh rate of the n+1th time period have the same period and opposite phases.

[0034] In the driving method provided by some embodiments of the present application, when the real-time refresh rate varies periodically, the step of outputting a compensation refresh rate according to the real-time refresh rate by the system chip specifically includes:

[0035] According to the real-time refresh rate, a compensation refresh rate with constant value is selected and outputted;

[0036] The real-time refresh rate of one period includes a first refresh rate and a second refresh rate; the compensation refresh rate with constant value is the first refresh rate or the second refresh rate.

[0037] In the driving method provided by some embodiments of the present application, when the real-time refresh rate varies periodically, the step of outputting a compensation refresh rate according to the real-time refresh rate by the system chip specifically includes:

[0038] According to the real-time refresh rate, at least one compensation refresh rate with preset value is inserted between two adjacent real-time refresh rates;

[0039] Wherein, the real-time refresh rate of one period includes a first refresh rate and a second refresh rate, and the compensation refresh rate with preset value is between the value of the first refresh rate and the value of the second refresh rate.

[0040] In the third aspect, the embodiments of the present application provide a computer readable storage medium, wherein instructions are stored in the computer readable storage medium, and when the instructions are run on the computer, the computer executes the driving method as any of the second aspect.

[0041] In the fourth aspect, the embodiments of the present application provide a computer program product containing instructions, and when the computer program product is run on the computer, the computer executes the driving method as any of the second aspect.

[0042] The embodiment of the present application provides a display device and a driving method thereof, a computer readable storage medium and a computer program product, the display device comprises: a system chip, a circuit board, a driving board and a display panel; the system chip is configured to detect a real-time refresh rate of the display panel, and output a compensation refresh rate according to the real-time refresh rate after detecting that the real-time refresh rate is periodically changed; the circuit board is configured to adjust a charging time of a sub-pixel in the display panel according to the compensation refresh rate, and generate a voltage control signal according to the charging time; the circuit board is further configured to store a preset relationship between refresh rate data and the charging time; the refresh rate data comprises the real-time refresh rate and the compensation refresh rate; the driving board is configured to generate a data signal according to the voltage control signal; and the display panel is configured to obtain a pixel voltage based on the data signal, and perform picture display according to the pixel voltage.

[0043] When the refresh rate of the display device periodically cycles at a plurality of fixed frequencies, at this time, due to the difference of the refresh rate, the charging time of positive and negative frame display pictures is quite different, the charge remains in the display panel in a short time, and liquid crystal polarization is easily caused; in the display device provided by the embodiment of the present application, after detecting that the refresh rate is periodically changed, the compensation refresh rate can be output according to the real-time refresh rate, and the charging time is adjusted in time according to the compensation refresh rate, so that the charging rate difference of positive and negative frame display pictures is reduced, thereby improving the charge remaining problem caused by the large charging time difference of positive and negative frames in the display panel, improving the afterimage in the display picture, and improving the display effect.

[0044] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, the content of the specification can be implemented, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0046] Figure 1 A connection structure schematic diagram between a display device and a control device provided by the embodiment of the present application;

[0047] Figure 2 A structure schematic diagram of a system chip in a display device provided by the embodiment of the present application;

[0048] Figure 3A 、 3BFig. 3C is a structural schematic diagram of three information processing modules in a system chip according to an embodiment of the present application;

[0049] Figure 4 Fig. 1 is a structural schematic diagram of a circuit board according to an embodiment of the present application;

[0050] Figure 5 Fig. 2 is a charging time and power analysis diagram of a real-time refresh rate according to an embodiment of the present application;

[0051] Figure 6 Fig. 3 is a charging time and power analysis diagram of a compensation refresh rate according to an embodiment of the present application. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0053] In the embodiments of the present application, the terms "first", "second", "third", "fourth" and the like are used to distinguish the same items or similar items with basically the same functions and effects, and are only for clearly describing the technical solutions in the embodiments of the present application, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features.

[0054] In the embodiments of the present application, the terms "upper", "lower" and the like indicate the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and thus cannot be understood as indicating or implying that the indicated devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as limiting the present application.

[0055] In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to indicate that the specific features, structures, materials or characteristics related to the embodiment or example are included in at least one embodiment or example of the present application. The illustrative representation of the above terms does not necessarily mean the same embodiment or example. In addition, the specific features, structures, materials or characteristics can be included in any one or more embodiments or examples in any appropriate manner.

[0056] In the embodiments of the present application, the meaning of "multiple" is two or more, and the meaning of "at least one" is one or more, unless otherwise explicitly and specifically limited.

[0057] The features of "parallel", "perpendicular" and "same" used in the embodiments of the present application include the strict sense of "parallel", "perpendicular", "same" and the case of containing a certain tolerance, which is considered to be within the acceptable deviation range of a specific value determined by a person skilled in the art in view of measurement and tolerance related to the measurement of a specific quantity (for example, the limitation of a measurement system). For example, "approximately" can mean within one or more standard deviations, or within 3% or 5% of the value.

[0058] Unless otherwise required by context, the term "comprises" in the specification and claims is to be construed as open, inclusive, meaning "including, but not limited to".

[0059] The polygons in the specification are not strictly in the sense that they can be approximate triangles, parallelograms, trapezoids, pentagons or hexagons, etc. There can be some small deformation caused by tolerance.

[0060] For a variable refresh rate display device, when it is applied in e-sports products, it can usually include a static mode and a dynamic mode; before the game starts, the display device displays in static mode, and after the game starts, the display device displays in dynamic mode. Among them, in the static mode, a plurality of (at least two) fixed refresh rates are periodically cycled; in the dynamic mode, the refresh rate changes randomly.

[0061] The refresh rate of the display device is different, and the charging time is different. Taking a 4K (4K resolution refers to a high-definition display standard with 4096 pixel points in the horizontal direction) display product as an example, the theoretical charging time of a pixel is 3.7 μs / frame when the refresh rate is 60 Hz, and the theoretical charging time of a pixel is 1.85 μs / frame when the refresh rate is 120 Hz. The polarity of the pixel in the display panel is changed every frame, so that the charging time of the pixel in the positive and negative frame pictures is different, and the positive and negative charges cannot be offset. In the case of large refresh rate jump, it is easy to cause liquid crystal polarization and generate image afterimage.

[0062] Based on this, the embodiments of the present application provide a display device and a driving method thereof to improve the problem of display image afterimage.

[0063] The embodiments of the present application provide a display device, as shown in Figure 1 The display device 100 includes a system chip 102, a circuit board 103, a driving board 104 and a display panel 105, the system chip 102 is electrically connected with the circuit board 103, the circuit board 103 is electrically connected with the driving board 104, and the driving board 104 is electrically connected with the display panel 105;

[0064] The system chip 102 is configured to detect the real-time refresh rate and output a compensation refresh rate based on the real-time refresh rate after detecting a periodic change in the real-time refresh rate.

[0065] Circuit board 103 is configured to adjust the charging time of the display panel according to the compensated refresh rate and generate a voltage control signal according to the charging time; it is also configured to store a preset relationship between refresh rate data and charging time; the refresh rate data includes real-time refresh rate and compensated refresh rate.

[0066] The driver board 104 is configured to generate a data signal based on a voltage control signal;

[0067] The display panel 105 is configured to acquire pixel voltages based on data signals and display images according to the pixel voltages.

[0068] in, Figure 1 The control device 101 can be a game console. The control device 101 is electrically connected to the system chip 102 to transmit control signals to the system chip 102.

[0069] The aforementioned display device is a variable refresh rate (VRR) display device.

[0070] In an exemplary embodiment, the system chip 102 can be a SOC chip. The aforementioned system-on-a-chip (SOC) refers to an integrated circuit chip, also known as a system-on-a-chip, meaning that it is a product, an integrated circuit with a specific purpose, which contains a complete system and all the content of embedded software.

[0071] In the embodiments of this application, the system chip 102 can monitor the refresh rate of the display device 100 in real time and identify the refresh rate data. When it determines that the real-time refresh rate of the display device 100 changes periodically, it starts to perform compensation calculation and refresh rate compensation.

[0072] Specifically, when the system chip 102 determines that the real-time refresh rate of the display device 100 changes periodically, the system chip 102 has detected at least two cycles of refresh rate change. Taking the system chip 102 detecting two cycles of refresh rate change as an example, compensation can begin from the refresh rate of the first detected cycle, or compensation can begin from the refresh rate of the second detected cycle.

[0073] For example, in the case of inverted compensation, the periodic refresh rate of two periods is A1, A2, A1, A2; starting from the detected refresh rate of the first period for compensation, the output refresh rate can be A1, A2, B1, B2, A1, A2, B1, B2; starting from the detected refresh rate of the second period for compensation, the output refresh rate can be A1, A2, A1, A2, B1, B2; wherein B1, B2 are the compensation refresh rates for the refresh rate of the second period.

[0074] For example, in the case of inverted compensation, B1=A2, B2=A1.

[0075] For example, in the case of inverted compensation, the periodic refresh rate of two periods is A1, A2, A1, A2; starting from the detected refresh rate of the first period for compensation, the output refresh rate can be A1, A2, B1, B2, A1, A2, B1, B2; starting from the detected refresh rate of the second period for compensation, the output refresh rate can be A1, A2, A1, A2, B1, B2; wherein B1, B2 are the compensation refresh rates for the refresh rate of the second period.

[0076] For example, in the case of inverted compensation, the periodic refresh rate of two periods is A1, A2, A1, A2; starting from the detected refresh rate of the first period for compensation, the output refresh rate can be A1, B, A2, B, A1, B, A2, B; starting from the detected refresh rate of the second period for compensation, the output refresh rate can be A1, A2, A1, B, A2, B, A1, B, A2, B; wherein B is a compensation refresh rate, and B includes at least one B1, the value of B1 is between A1 and A2.

[0077] In an exemplary embodiment, the circuit board 103 can be a PCBA board (Printed Circuit Board Assembly), also known as a PCB board.

[0078] In an exemplary embodiment, the circuit board 103 includes a timing controller TCON, which is the core circuit for controlling the timing action in the display panel. Its main function is to convert the LVDS or EDP type video signal (including at least one of RGB data signal, clock signal, and control signal) sent by the system chip SOC into a video signal (such as ISP type signal) that can drive the display panel after processing.

[0079] EDP ​​signal is a signal transmitted through the EDP interface; EDP (Embedded Display Port) interface is a fully digital interface based on the DisplayPort architecture and protocol, which can transmit high-resolution signals with simpler connectors and fewer pins, and can realize the simultaneous transmission of multiple data.

[0080] ISP (Image Signal Processing) primarily processes the output signal from the front end to match different display panel models. Essentially, the timing controller TCON in circuit board 103 processes and converts the video signal transmitted from system chip 102 (SOC) to obtain a signal recognizable by driver board 104, which then transmits it to display panel 105 for normal image display.

[0081] In an exemplary embodiment, such as Figure 4 As shown, the circuit board 103 includes not only a timing controller TCON, but may also include a memory C. The memory C stores a preset relationship between refresh rate data and charging time; for example, when the refresh rate is 120Hz, the charging time is 1.85µs / frame; when the refresh rate is 60Hz, the charging time is 3.7µs / frame. The timing controller TCON is electrically connected to the system chip 102 and the memory C, and determines the adjusted charging time based on the compensated refresh rate and the preset relationship between the refresh rate data (e.g., the compensated refresh rate) and the charging time. It then generates a voltage control signal with a specific timing based on the adjusted charging time.

[0082] For example, the timing controller TCON is also electrically connected to the driver board 104 to transmit voltage control signals with specific timing to the driver board 104 (e.g., a driver chip).

[0083] In an exemplary embodiment, the driver board 104 may be a driver chip.

[0084] Examples include SRIC (Source / Read-out IC) type driver chips, TDDIC (Touch with Display Driver IC) type driver chips, and LTDIIC (Large Touch with Display Driver IC) type driver chips. Among them, TDDIC chips integrate the touch driver chip and the display driver chip into a single chip; LTDIIC is a new technology developed based on TDDIC for use in large-size display panels to meet the needs of large screens.

[0085] The driving board 104 generates a data signal according to the voltage control signal and transmits the data signal to the display panel. The display panel 105 charges the sub-pixels according to the received data signal, so as to obtain a pixel voltage of each sub-pixel. Each sub-pixel in the display panel 105 displays a picture according to the pixel voltage.

[0086] The display panel 105 can be an LCD (Liquid Crystal Display) display panel. The LCD display panel can include a TN (Twisted Nematic) type, a VA (Vertical Alignment) type, an IPS (In-Plane Switching) type, or an ADS (Advanced Super Dimension Switch) type liquid crystal display panel.

[0087] In the related art, when the refresh rate of the display device periodically cycles at a plurality of fixed frequencies, due to the difference in refresh rate, the charging time of positive and negative frame display pictures is quite different, and the charge remains in the display panel for a short time, which easily causes liquid crystal polarization. In the display device provided in the embodiments of the present application, after detecting that the refresh rate periodically changes, the compensation refresh rate can be output according to the real-time refresh rate, and the charging time can be adjusted in time according to the compensation refresh rate, so as to reduce the difference in charging rate of positive and negative frame display pictures, thereby improving the charge remaining problem in the display panel due to the large difference in charging time of positive and negative frames, improving the afterimage in the display picture, and improving the display effect.

[0088] In some embodiments of the display device provided in the present application, as shown in Figure 2 The system chip 102 includes a detection module 1, an information processing module 2, and an output module 3.

[0089] The detection module 1 is configured to detect the real-time refresh rate.

[0090] The information processing module 2 is electrically connected with the detection module 1 and is configured to obtain real-time refresh rate data. After detecting that the real-time refresh rate data periodically changes, the compensation refresh rate is calculated according to the real-time refresh rate.

[0091] The output module 3 is electrically connected with the information processing module 2 and the circuit board 103, and is configured to output the compensation refresh rate to the circuit board 103.

[0092] Here, the specific circuit structure in the information processing module 2 is not limited, and can be set according to the way of calculating the compensation refresh rate.

[0093] In some embodiments, the information processing module 2 can perform an inversion calculation, an interpolation calculation, or a selection copy calculation.

[0094] In some embodiments of the display device provided in the present application, as shown in Figure 3A The information processing module 2 includes an inversion sub-module 21 configured to perform inversion processing on the real-time refresh rate according to the real-time refresh rate of the nth time period, output a compensation refresh rate of the (n+1)th time period, and the time consumed by the real-time refresh rate of the nth time period is greater than or equal to the time consumed by the compensation refresh rate of the (n+1)th time period; n is an odd number, and the time period is the time consumed by at least one period of real-time refresh rate.

[0095] For example, as shown in Figure 5 The real-time refresh rate output in the nth time period is 120Hz, 60Hz, 120Hz, 60Hz, 120Hz, and 60Hz; the nth time period is the time consumed by 6 frames of pictures, and the nth time period is also the time consumed by 3 periods of real-time refresh rate.

[0096] At this time, the compensation refresh rate of the (n+1)th time period can be obtained according to the real-time refresh rate output in the nth time period.

[0097] For example, the (n+1)th time period is the time consumed by one period of real-time refresh rate, and the output compensation refresh rate is 60Hz and 120Hz; it can be understood that the compensation refresh rate of the (n+1)th time period compensates one period of real-time refresh rate in the nth time period.

[0098] Real-time refresh rate: 120Hz, 60Hz, 120Hz, 60Hz, 120Hz, 60Hz;

[0099] Compensation refresh rate: 60Hz, 120Hz;

[0100] The refresh rate output data is: 120Hz, 60Hz, 120Hz, 60Hz, 120Hz, 60Hz, 60Hz, 120Hz.

[0101] For another example, the (n+1)th time period is the time consumed by two periods of real-time refresh rate, and the output compensation refresh rate is 60Hz, 120Hz, 60Hz, and 120Hz; it can be understood that the compensation refresh rate of the (n+1)th time period compensates two periods of real-time refresh rate in the nth time period.

[0102] Real-time refresh rate: 120Hz, 60Hz, 120Hz, 60Hz, 120Hz, 60Hz;

[0103] Compensation refresh rate: 60Hz, 120Hz, 60Hz, 120Hz;

[0104] The refresh rate output data is: 120Hz, 60Hz, 120Hz, 60Hz, 120Hz, 60Hz, 60Hz, 120Hz, 60Hz, 120Hz.

[0105] For example, if the (n+1)th time period is the time consumed by the real-time refresh rate for 3 cycles, then the output compensated refresh rate is 60Hz, 120Hz, 60Hz, 120Hz, 60Hz, 120Hz. It can be understood that the compensated refresh rate of the (n+1)th time period compensates for the real-time refresh rate of the three cycles in the nth time period.

[0106] Real-time refresh rate: 120Hz, 60Hz, 120Hz, 60Hz, 120Hz, 60Hz;

[0107] Compensated refresh rates: 60Hz, 120Hz, 60Hz, 120Hz, 60Hz, 120Hz;

[0108] The refresh rate output data is: 120Hz, 60Hz, 120Hz, 60Hz, 120Hz, 60Hz, 60Hz, 120Hz, 60Hz, 120Hz, 60Hz, 120Hz.

[0109] For example, when both the nth and n+1th time periods are the time consumed by 3 cycles of real-time refresh rate, combined with Figure 5 and Figure 6 As shown, when the refresh rate is as follows Figure 5 The two-frame cycle shown is: 120Hz, 60Hz, 120Hz, 60Hz, 120Hz, 60Hz. For example, if the charging time for a positive frame of a product is 1.85μs and the charging time for a negative frame is 3.7μs, taking a display at 255 grayscale (L255) as an example, then... Figure 5 As shown, every two frames generate a bias charge of 1.85μs, -L255, which, when accumulated, can easily cause liquid crystal polarization, resulting in image retention. When the compensated refresh rate is output after the (n+1)th time interval, as... Figure 6 As shown, every two frames generate a bias charge of 1.85μs + L255; the bias charge generated by the refresh rate compensation in the (n+1)th time period can be offset by the bias charge generated by the real-time refresh rate in the nth time period, thereby preventing the liquid crystal from polarizing.

[0110] In some embodiments of the display device provided in this application, the compensated refresh rate of the (n+1)th time period is configured to compensate for the real-time refresh rate of the nth time period;

[0111] The real-time refresh rate of the nth time period and the compensation refresh rate of the (n+1)th time period consume the same time; the real-time refresh rate of the nth time period and the compensation refresh rate of the (n+1)th time period have the same period and opposite phases.

[0112] For example, the nth time period consumes 6 frames of picture time, and the nth time period also consumes 3 periods of real-time refresh rate time, then the (n+1)th time period consumes 3 periods of real-time refresh rate time, at this time, the output compensation refresh rate is 60Hz, 120Hz, 60Hz, 120Hz, 60Hz, 120Hz; it can be understood that the compensation refresh rate of the (n+1)th time period compensates the real-time refresh rate of the three periods in the nth time period.

[0113] The "opposite phase" is explained as follows: for example, a period of real-time refresh rate includes refresh rate C1 and refresh rate C2; inverting the refresh rate C1 and the refresh rate C2, a period of compensation refresh rate C2 and compensation refresh rate C1 is obtained, and the two refresh rate data in a period can be exchanged to obtain refresh rate data with opposite phases.

[0114] The following specifically takes the compensation refresh rate of the (n+1)th time period compensating the real-time refresh rate of the three periods in the nth time period as an example to explain how to exchange the two refresh rate data in a period to obtain refresh rate data with opposite phases, as follows:

[0115] Combining Figure 5 and Figure 6 As shown in Figure 5 , when the refresh rate jumps in a cycle of two frames as shown in Figure 5 , for example, the charging time of a positive frame of a certain product is 1.85μs, and the charging time of a negative frame is 3.7μs, taking the display picture under 255 gray scale as an example (L255), then as shown in Figure 6 , every two frames of picture produce 1.85μs, -L255 bias electric quantity, and after accumulation, liquid crystal polarization problem is easily caused, causing ghosting. After outputting the compensation refresh rate (the two refresh rate data in a period can be exchanged to obtain refresh rate data with opposite phases) in the subsequent (n+1)th time period, as shown in

[0116] In some embodiments of the display device provided in the present application, the time period in the foregoing is less than or equal to the time consumed by the real-time refresh rate in which the periodic change is detected.

[0117] For example, the compensation refresh rate of the (n+1)th time period is configured to compensate for the real-time refresh rate of the nth time period. The time consumed by the nth time period and the (n+1)th time period can be set to be less than or equal to the time consumed by the real-time refresh rate in which the periodic change is detected. In this way, the periodic refresh rate can be compensated in time to avoid the situation that the periodic refresh rate has caused liquid crystal polarization after a large number of frames of display picture, and the compensation effect of the outputted compensation refresh rate on the power offset caused by the real-time refresh rate is not good, thereby improving the compensation effect of the refresh rate.

[0118] In some embodiments of the display device provided in the present application, as shown in Figure 3B The information processing module 2 includes a copying sub-module 22, which is configured to perform selective copying processing according to the real-time refresh rate and output a compensation refresh rate with an unchanged refresh rate.

[0119] In an exemplary embodiment, after detecting that the real-time refresh rate data is periodically changed, the copying sub-module 22 can forcibly selectively copy the refresh rate of the odd frame picture and cover it on the even frame picture, so that the periodically changed refresh rate data becomes a refresh rate with a constant value.

[0120] In an exemplary embodiment, after detecting that the real-time refresh rate data is periodically changed, the copying sub-module 22 can forcibly selectively copy the refresh rate of the even frame picture and cover it on the odd frame picture, so that the periodically changed refresh rate data becomes a refresh rate with a constant value.

[0121] In some embodiments of the display device provided in the present application, the real-time refresh rate of one period includes a first refresh rate and a second refresh rate, and the copying sub-module 22 is configured to selectively copy the first refresh rate and cover the second refresh rate; or the copying sub-module 22 is configured to selectively copy the second refresh rate and cover the first refresh rate.

[0122] For example, when the refresh rate periodically jumps in a two-frame cycle: 120Hz, 60Hz, 120Hz, 60Hz, 120Hz, 60Hz, the subsequent 60Hz (or the subsequent 120Hz) is forcibly and continuously outputted by the action of the copying sub-module 22 until the periodic refresh rate ends.

[0123] In some embodiments of the present application, when it is detected that the real-time refresh rate data is periodically changed, the first refresh rate can be selectively copied and the second refresh rate can be overwritten by the copying sub-module 22; or the second refresh rate can be selectively copied and the first refresh rate can be overwritten by the copying sub-module 22, so that the output refresh rate is a constant refresh rate until the periodic refresh rate ends, so that the positive and negative frame display images are as balanced as possible, the probability of liquid crystal polarization is reduced, and the residual image problem is improved, and the display effect is improved.

[0124] In some embodiments of the display device provided by the present application, as shown in Figure 3C The information processing module 2 includes an interpolation sub-module 23, which is configured to insert at least one preset value compensation refresh rate between the adjacent two real-time refresh rates according to the real-time refresh rate.

[0125] The real-time refresh rate of one period includes the first refresh rate and the second refresh rate, and the preset value compensation refresh rate is between the values of the first refresh rate and the second refresh rate.

[0126] For example, when the refresh rate periodically jumps in a two-frame cycle: 120Hz, 60Hz, 120Hz, 60Hz, 120Hz, 60Hz, at least one preset value compensation refresh rate can be inserted between the adjacent two real-time refresh rates (60Hz and 120Hz); at this time, the compensation refresh rate can be any value between 60Hz and 120Hz.

[0127] For example, when it is detected that the real-time refresh rate is periodically changed, after at least one preset value compensation refresh rate is inserted between the adjacent two real-time refresh rates, the output refresh rate is: 120Hz, 110Hz, 100Hz, 90Hz, 80Hz, 60Hz, 120Hz, 110Hz, 100Hz, 90Hz, 80Hz, 60Hz, 120Hz, 110Hz, 100Hz, 90Hz, 80Hz, 60Hz… until the periodic refresh rate ends, so that the charge amount of the pixel bias voltage can be reduced, the liquid crystal polarization time can be delayed, and the probability of liquid crystal polarization can be reduced, thereby improving the residual image problem and improving the display effect.

[0128] In some embodiments of the display device provided by the present application, the display panel 105 is a liquid crystal display panel, and the range of the real-time refresh rate of one period includes 48Hz-120Hz.

[0129] For example, the real-time refresh rate of the display panel 105 is 50Hz, 60Hz, 70Hz, 80Hz, 90Hz, 100Hz, 110Hz, or 120Hz.

[0130] Exemplarily, the liquid crystal display panel can include a TN (Twisted Nematic) type, a VA (Vertical Alignment) type, an IPS (In-Plane Switching) type, an ADS (Advanced Super Dimension Switch) type or the like. The liquid crystal display panel can include a color film substrate and an array substrate, and can further include a liquid crystal layer between the color film substrate and the array substrate, and can further include a driving circuit and the like. Here, only the structures related to the application points are introduced, and other structures of the display panel can be obtained according to related technologies or common knowledge, and will not be described here.

[0131] Embodiments of the present application provide a driving method of a display device, as shown in the accompanying drawings, the display device 100 includes a system chip 102, a circuit board 103, a driving board 104 and a display panel 105, the system chip 102 is electrically connected with the circuit board 103, the circuit board 103 is electrically connected with the driving board 104, and the driving board 104 is electrically connected with the display panel 105. Figure 1

[0132] The driving method includes:

[0133] S1, the system chip 102 detects the real-time refresh rate of the display panel 105 in the display device 100.

[0134] In embodiments of the present application, the system chip 102 can monitor the refresh rate of the display device 100 in real time, and identify the data of the refresh rate. When it judges that the real-time refresh rate of the display device 100 changes periodically, it starts to compensate and refresh the rate.

[0135] S2, in the case that the real-time refresh rate changes periodically, the system chip 102 outputs a compensated refresh rate according to the real-time refresh rate.

[0136] When the system chip 102 judges that the real-time refresh rate of the display device 100 changes periodically, the system chip 102 has detected that the refresh rate has changed for at least two cycles. Taking the case that the system chip 102 has detected that the refresh rate has changed periodically for two cycles as an example, compensation can be started from the detected refresh rate of the first cycle, or compensation can be started from the detected refresh rate of the second cycle.

[0137] S3, the circuit board 103 adjusts the charging time of the sub-pixels in the display panel 105 according to the compensated refresh rate, and generates a voltage control signal according to the charging time; wherein the circuit board 103 has stored in advance a preset relationship between refresh rate data and charging time, and the refresh rate data includes real-time refresh rate and compensated refresh rate.​

[0138] In the exemplary embodiment, the circuit board 103 comprises a timer control register (TCON) as a core circuit for controlling the timing action in the display panel, and a memory C storing preset relationships between refresh rate data and charging time, for example, when the refresh rate data is 120Hz, the charging time is 1.85us / frame; when the refresh rate data is 60Hz, the charging time is 3.7us / frame.

[0139] The timer control register TCON is electrically connected with the system chip 102 and the memory C, and determines the adjusted charging time according to the preset relationship between the compensated refresh rate and the refresh rate data (for example, the compensated refresh rate), and generates a voltage control signal with a specific timing according to the adjusted charging time.

[0140] S4, the drive board 104 generates a data signal according to the voltage control signal.

[0141] S5, the display panel 105 obtains a pixel voltage based on the data signal, and displays a picture according to the pixel voltage.

[0142] The drive board 104 generates a data signal according to the voltage control signal and transmits it to the display panel, and the display panel 105 charges the sub-pixels according to the received data signal, so as to obtain the pixel voltage of each sub-pixel, and each sub-pixel in the display panel 105 displays a picture according to the pixel voltage.

[0143] The display device described above is a variable refresh rate (VRR) display device.

[0144] In the related art, when the refresh rate of the display device periodically cycles at multiple fixed frequencies, due to the difference in refresh rate, the charging time of positive and negative frame display pictures differs greatly, and the charge remains in the display panel for a short time, which easily causes liquid crystal polarization;

[0145] In the driving method of the display device provided in the embodiments of the present application, after detecting that the refresh rate periodically changes, the display device can output a compensated refresh rate according to the real-time refresh rate, and adjust the charging time in time according to the compensated refresh rate, so as to reduce the difference in charging rate between positive and negative frame display pictures, thereby improving the problem of charge remaining in the display panel due to the large difference in charging time between positive and negative frames, improving the afterimage in the display picture, and improving the display effect.

[0146] In the driving method provided in some embodiments of the present application, in the case where the real-time refresh rate periodically changes, the step of outputting a compensation refresh rate according to the real-time refresh rate by the system chip 102 specifically includes:

[0147] S21, inverting the real-time refresh rate according to the real-time refresh rate of the nth time period, and outputting a compensation refresh rate of the (n+1)th time period; wherein n is an odd number, the time period is the time consumed by at least one period of the real-time refresh rate; the real-time refresh rate of the nth time period and the compensation refresh rate of the (n+1)th time period consume the same time; the real-time refresh rate of the nth time period and the compensation refresh rate of the (n+1)th time period have the same period and opposite phases.

[0148] The system chip 102 includes a detection module 1, an information processing module 2, and an output module 3; the information processing module 2 includes an inversion sub-module 21 configured to invert the real-time refresh rate according to the real-time refresh rate of the nth time period, and output a compensation refresh rate of the (n+1)th time period.

[0149] The step of S21, inverting the real-time refresh rate according to the real-time refresh rate of the nth time period, and outputting a compensation refresh rate of the (n+1)th time period; wherein n is an odd number, the time period is the time consumed by at least one period of the real-time refresh rate; the real-time refresh rate of the nth time period and the compensation refresh rate of the (n+1)th time period consume the same time; the real-time refresh rate of the nth time period and the compensation refresh rate of the (n+1)th time period have the same period and opposite phases, specifically can include:

[0150] Sub-step: when the real-time refresh rate output by the nth time period is 120Hz, 60Hz, 120Hz, 60Hz, 120Hz, 60Hz; the output compensation refresh rate is 60Hz, 120Hz, 60Hz, 120Hz, 60Hz, 120Hz; (the nth time period is the time consumed by 6 frames of pictures, that is, the time consumed by 3 periods of the real-time refresh rate; the (n+1)th time period is the time consumed by 3 periods of the real-time refresh rate.)

[0151] In the driving method provided in the embodiments of the present application, when the nth time period and the (n+1)th time period are both the time consumed by 3 periods of the real-time refresh rate (the times are equal), in combination with Figure 5 and Figure 6 As shown in Figure 5 , the refresh rate jumps in a two-frame cycle as shown in Figure 5 , for example, when the charging time of a positive frame of a certain product is 1.85μs, and the charging time of a negative frame is 3.7μs, taking a display picture under 255 gray scale (L255) as an example, as shown in Figure 5 , the refresh rate jumps in a two-frame cycle as shown in Figure 5 .As shown in FIG. 1, each two frames of pictures generate 1.85 μs, -L255 biasing electric quantity, and after accumulation, liquid crystal polarization problem is easily generated, causing residual image. When outputting compensation refresh rate in the n+1 time period, as shown in FIG. 2, each two frames of pictures generate 1.85 μs, +L255 biasing electric quantity; the biasing electric quantity generated by the n+1 time period compensation refresh rate can offset the biasing electric quantity generated by the n time period real-time refresh rate, thereby preventing liquid crystal from being polarized. Figure 6

[0152] In the driving method provided by some embodiments of the present application, in the case that the real-time refresh rate is periodically changed, the step of outputting the compensation refresh rate according to the real-time refresh rate by the system chip specifically includes:

[0153] S22, according to the real-time refresh rate, performing selective copying processing and outputting the compensation refresh rate with constant value; one cycle of the real-time refresh rate includes a first refresh rate and a second refresh rate; the compensation refresh rate with constant value is the first refresh rate or the second refresh rate.

[0154] The system chip 102 includes a detection module 1, an information processing module 2 and an output module 3; the information processing module 2 includes a copying sub-module 22.

[0155] Specifically, sub-step 1: when it is detected that the real-time refresh rate data is periodically changed, the first refresh rate can be selectively copied and the second refresh rate can be covered by the copying sub-module 22;

[0156] Or, sub-step 2: when it is detected that the real-time refresh rate data is periodically changed, the second refresh rate can be selectively copied and the first refresh rate can be covered by the copying sub-module 22.

[0157] In this way, through the sub-step 1 or the sub-step 2, the output refresh rate can be the constant refresh rate until the periodic refresh rate ends, so that the electric quantity bias of the positive frame display picture and the negative frame display picture can be balanced as much as possible, the probability of liquid crystal polarization can be reduced, the residual image problem can be improved, and the display effect can be improved.

[0158] In the driving method provided by some embodiments of the present application, in the case that the real-time refresh rate is periodically changed, the step of outputting the compensation refresh rate according to the real-time refresh rate by the system chip specifically includes:

[0159] S23, according to the real-time refresh rate, inserting at least one compensation refresh rate with preset value between two adjacent real-time refresh rates;

[0160] In the driving method provided by some embodiments of the present application, in the case that the real-time refresh rate is periodically changed, the step of outputting the compensation refresh rate according to the real-time refresh rate by the system chip specifically includes: In the driving method provided by some embodiments of the present application, in the case that the real-time refresh rate is periodically changed, the step of outputting the compensation refresh rate according to the real-time refresh rate by the system chip specifically includes:

[0161] The system chip 102 comprises a detection module 1, an information processing module 2 and an output module 3; the information processing module 2 comprises an interpolation submodule 23.

[0162] Specifically, when it is detected that the real-time refresh rate is periodically changed, at least one preset value of compensation refresh rate can be inserted between the adjacent two real-time refresh rates by the interpolation submodule 23.

[0163] For example, when the refresh rate is periodically changed in a two-frame cycle manner: 120Hz, 60Hz, 120Hz, 60Hz, 120Hz, 60Hz, at least one preset value of compensation refresh rate can be inserted between the adjacent two real-time refresh rates (60Hz and 120Hz); at this time, the compensation refresh rate can be any value between 60Hz and 120Hz.

[0164] For example, when it is detected that the real-time refresh rate is periodically changed, after at least one preset value of compensation refresh rate is inserted between the adjacent two real-time refresh rates, the output refresh rate is: 120Hz, 110Hz, 100Hz, 90Hz, 80Hz, 60Hz, 120Hz, 110Hz, 100Hz, 90Hz, 80Hz, 60Hz, 120Hz, 110Hz, 100Hz, 90Hz, 80Hz, 60Hz……until the periodic refresh rate ends, in this way, the charge amount of the pixel bias voltage can be reduced, the liquid crystal polarization time is delayed, the probability of liquid crystal polarization is reduced, thereby the residual image problem is improved and the display effect is improved.

[0165] Embodiments of the present application provide a computer readable storage medium, the computer readable storage medium stores instructions, when the instructions are executed on the computer, the computer executes the driving method as any of the preceding.

[0166] Embodiments of the present application provide a computer program product comprising instructions, when the computer program product is executed on the computer, the computer executes the driving method as any of the preceding.

[0167] The above is merely specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A display device, wherein, include: System chips, circuit boards, driver boards, and display panels; The system chip is configured to detect the real-time refresh rate, and after detecting that the real-time refresh rate changes periodically, output a compensation refresh rate based on the real-time refresh rate. The circuit board, electrically connected to the system chip, is configured to adjust the charging time of the display panel according to the compensated refresh rate, and generate a voltage control signal according to the charging time. It is also configured to store a preset relationship between refresh rate data and the charging time; The refresh rate data includes the real-time refresh rate and the compensated refresh rate; The driver board is electrically connected to the circuit board and is configured to generate a data signal according to the voltage control signal; The display panel is electrically connected to the driver board and is configured to acquire pixel voltages based on the data signal and display images according to the pixel voltages.

2. The display device according to claim 1, wherein, The system chip includes a detection module, an information processing module, and an output module; The detection module is configured to detect the real-time refresh rate; The information processing module is electrically connected to the detection module and is configured to acquire the real-time refresh rate data. After detecting that the real-time refresh rate data changes periodically, it calculates a compensation refresh rate based on the real-time refresh rate. The output module is electrically connected to the information processing module and the circuit board, respectively, and is configured to output the compensated refresh rate to the circuit board.

3. The display device according to claim 2, wherein, The information processing module includes an inversion submodule, which is configured to invert the real-time refresh rate according to the real-time refresh rate of the nth time period and output the compensation refresh rate of the (n+1)th time period. The time consumed by the real-time refresh rate of the nth time period is greater than or equal to the time consumed by the compensation refresh rate of the (n+1)th time period. n is an odd number, and the time period is the time consumed by at least one cycle of real-time refresh rate.

4. The display device according to claim 3, wherein, The compensated refresh rate for the (n+1)th time period is configured to compensate for the real-time refresh rate for the nth time period. The real-time refresh rate in the nth time period and the compensated refresh rate in the (n+1)th time period take the same amount of time; the real-time refresh rate in the nth time period and the compensated refresh rate in the (n+1)th time period have the same period but opposite phase.

5. The display device according to claim 2, wherein, The information processing module includes a copying submodule, which is configured to perform selective copying based on the real-time refresh rate and output a compensated refresh rate that does not change the refresh rate.

6. The display device according to claim 5, wherein, The real-time refresh rate for one cycle includes a first refresh rate and a second refresh rate, and the copy submodule is configured to select to copy the first refresh rate and override the second refresh rate; Alternatively, the copy submodule is configured to select to copy the second refresh rate and override the first refresh rate.

7. The display device according to claim 2, wherein, The information processing module includes an interpolation submodule, which is configured to insert at least one preset value of compensation refresh rate between two adjacent real-time refresh rates according to the real-time refresh rate. The real-time refresh rate for one cycle includes a first refresh rate and a second refresh rate, and the preset value of the compensated refresh rate is between the values ​​of the first refresh rate and the second refresh rate.

8. The display device according to claim 3 or 4, wherein, The time period is less than or equal to the time taken to detect the periodic change in the real-time refresh rate.

9. The display device according to any one of claims 1 to 7, wherein, The display panel is a liquid crystal display panel, and the real-time refresh rate in one cycle ranges from 48Hz to 120Hz.

10. A driving method for a display device, wherein, The display device includes a system chip, a circuit board, a driver board, and a display panel. The system chip is electrically connected to the circuit board, the circuit board is electrically connected to the driver board, and the driver board is electrically connected to the display panel. The method includes: The system chip detects the real-time refresh rate of the display panel in the display device; When the real-time refresh rate changes periodically, the system chip outputs a compensation refresh rate based on the real-time refresh rate. The circuit board adjusts the charging time of the sub-pixels in the display panel according to the compensated refresh rate, and generates a voltage control signal according to the charging time; wherein, the circuit board stores a preset relationship between refresh rate data and the charging time in advance, and the refresh rate data includes the real-time refresh rate and the compensated refresh rate; The driver board generates a data signal based on the voltage control signal; The display panel acquires pixel voltages based on the data signal and displays images according to the pixel voltages.

11. The driving method according to claim 10, wherein, The step of the system chip outputting a compensation refresh rate based on the real-time refresh rate when the real-time refresh rate changes periodically specifically includes: The real-time refresh rate is inverted based on the real-time refresh rate of the nth time period, and the compensated refresh rate of the (n+1)th time period is output. Wherein, n is an odd number, the time period is the time consumed by at least one cycle of real-time refresh rate; the real-time refresh rate in the nth time period and the compensated refresh rate in the (n+1)th time period have the same time consumed; the real-time refresh rate in the nth time period and the compensated refresh rate in the (n+1)th time period have the same period but opposite phase.

12. The driving method according to claim 10, wherein, The step of the system chip outputting a compensation refresh rate based on the real-time refresh rate when the real-time refresh rate changes periodically specifically includes: Based on the real-time refresh rate, a selective copying process is performed, and a compensated refresh rate that remains unchanged is output.

13. The driving method according to claim 10, wherein, The step of the system chip outputting a compensation refresh rate based on the real-time refresh rate when the real-time refresh rate changes periodically specifically includes: Based on the real-time refresh rate, at least one preset value of compensation refresh rate is inserted between two adjacent real-time refresh rates; The real-time refresh rate for one cycle includes a first refresh rate and a second refresh rate, and the preset compensation refresh rate is between the values ​​of the first refresh rate and the second refresh rate.

14. A computer-readable storage medium, wherein, The computer-readable storage medium stores instructions that, when executed on the computer, cause the computer to perform the driving method according to any one of claims 10 to 13.

15. A computer program product containing instructions, wherein, When the computer program product is run on a computer, it causes the computer to perform the driving method according to any one of claims 10 to 13.

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