Display device and driving method thereof

Abstract

This application discloses a display device and its driving method, relating to the field of display technology. The display device includes: in a first mode, at least one data writing cycle of the display device includes a first stage and a second stage. During the first stage, the backlight module of the display device is in a bright state; during the second stage, the backlight module of the display device is in a dark state. The second stage includes at least one of a first sub-stage and a second sub-stage. The start time of the first sub-stage is the start time of the data writing cycle, and the end time of the second sub-stage is the end time of the data writing cycle. The display panel provided according to the embodiments of this application helps to improve the flicker problem of the display device under low-frequency driving and improves the display effect of the display device.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a display device and its driving method. Background Technology

[0002] In recent years, with the widespread use of high refresh rate electronic devices such as mobile phones, the battery life of these devices has become increasingly poor. To improve battery life, reduce power consumption, and achieve a balance between high refresh rates and low power consumption, low-frequency drive technology has been developed.

[0003] However, in related technologies, when the display device is driven at low frequency, the screen display will exhibit flickering, which affects the display effect of the display device. Summary of the Invention

[0004] This application provides a display device and its driving method, which helps to improve the flickering problem of the display device under low-frequency driving and improve the display effect of the display device.

[0005] In a first aspect, embodiments of this application provide a display device, the display device comprising: in a first mode, at least one data writing cycle of the display device includes a first stage and a second stage, wherein in the first stage, the backlight module of the display device is in a bright state, and in the second stage, the backlight module of the display device is in a dark state, the second stage includes at least one of a first sub-stage and a second sub-stage, the start time of the first sub-stage is the start time of the data writing cycle, and the end time of the second sub-stage is the end time of the data writing cycle.

[0006] Based on the same inventive concept, in a second aspect, embodiments of this application provide a driving method for a display device, wherein at least one data writing cycle of the display device includes a first stage and a second stage, the second stage includes at least one of a first sub-stage and a second sub-stage, the start time of the first sub-stage is the start time of the data writing cycle, and the end time of the second sub-stage is the end time of the data writing cycle. The methods include: In the first stage, the backlight module of the control display device is in a bright state; in the second stage, the backlight module of the control display device is in a dark state.

[0007] According to the display device and driving method provided in the embodiments of this application, at least one data writing cycle of the display panel includes a first sub-stage and / or a second sub-stage. The start time of the first sub-stage is the start time of the data writing cycle, and the start time of the second sub-stage is the end time of the data writing cycle. Since the human eye can see the display screen when the backlight module is in a bright state and cannot see the display screen when the backlight module is in a dark state, by setting the backlight module of the display device to a dark state in the first sub-stage and / or the second sub-stage, the maximum voltage difference that the human eye can perceive is less than the voltage difference between the start and end times of the data writing cycle. That is, the voltage difference that causes the display brightness difference of the display device is reduced, and the display time that the human eye can perceive is reduced, thereby helping to improve the flicker problem of the display device under low-frequency driving and improving the display effect of the display device. Attached Figure Description

[0008] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals denote the same or similar features, and the drawings are not drawn to scale.

[0009] Figure 1 A timing diagram of a display device in the related art is shown; Figure 2 This illustration shows a schematic diagram of a display device provided in an embodiment of this application; Figure 3 This illustration shows a timing diagram of a display device provided in an embodiment of this application; Figure 4 This invention provides another timing diagram of a display device according to an embodiment of the present application. Figure 5 This illustrates yet another timing diagram of the display device provided in an embodiment of this application; Figure 6 This illustrates yet another timing diagram of the display device provided in an embodiment of this application; Figure 7 This illustrates yet another timing diagram of the display device provided in an embodiment of this application; Figure 8 This illustrates yet another timing diagram of the display device provided in an embodiment of this application; Figure 9 This illustrates yet another timing diagram of the display device provided in an embodiment of this application; Figure 10 This illustrates yet another timing diagram of the display device provided in an embodiment of this application; Figure 11 This illustration shows a flowchart of a driving method for a display device provided in an embodiment of this application. Detailed Implementation

[0010] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0011] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0012] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the implementation methods provided in the embodiments of this application can be combined with each other without contradiction.

[0013] Before describing the technical solutions provided in the embodiments of this application, in order to facilitate understanding of the embodiments of this application, this application first specifically explains the problems existing in the related technologies: In recent years, with the widespread use of high refresh rate electronic devices such as mobile phones, battery life has become increasingly poor. To improve the battery life of electronic devices, reducing the power consumption of display devices under non-gaming dynamic high refresh rate conditions has become an urgent problem to solve. Currently, low-frequency driving technology, which reduces the mainstream driving frequency of display panels from 144Hz to 15Hz, 10Hz, or 5Hz, is used to meet the requirements of both high refresh rates and low power consumption in display devices. Here, a driving frequency of 144Hz means scanning 144 frames per second; the low-frequency driving technology can be a driving frequency less than or equal to 15Hz.

[0014] Please see Figure 1 , Figure 1 This diagram illustrates a timing sequence of a display device in the related art. One data write cycle of the display panel in the display device includes a data write phase (Driving) and a hold phase (Holding). During the Driving phase, data signals on the data line are written to the pixel circuits in the display device; during the Hold phase, data signals on the data line are not written to the pixel circuits. The inventors have discovered that under low-frequency driving, the Hold phase is relatively long, increasing the leakage current time of the driving transistors in the display device. This results in a larger voltage difference (V1) between the pixel electrode voltage at the beginning and end of the data write cycle, leading to a larger brightness difference within the data write cycle and consequently causing flickering in the display device under low-frequency driving.

[0015] It should be noted that, Figures 1 to 10 The dotted lines in the diagram represent the changes in pixel electrode voltage in the display device. The dotted lines indicate the voltage value of the pixel electrodes during the data write cycle. The rate of decrease in pixel electrode voltage represented by the dotted lines is for illustrative purposes only and is not intended to define the rate of decrease of pixel electrode voltage at different stages.

[0016] To address the aforementioned problems, this application provides a display device and its driving method. The following description, in conjunction with the accompanying drawings, will illustrate various embodiments of the display device and its driving method.

[0017] This application provides a display device, which may be a liquid crystal display (LCD) display device.

[0018] like Figure 2 As shown, Figure 2 This illustration shows a structural schematic of a display device provided in an embodiment of this application. The display device 1000 provided in this application embodiment may include a display panel 100 and a backlight module 200. The backlight module 200 can be used to provide a backlight source with sufficient brightness and uniform distribution for the display panel 100. Exemplarily, the backlight module 200 may use an LED (Light-Emitting Diode) as the light source.

[0019] like Figure 3 As shown, in the first mode, at least one data write cycle of the display device may include a first phase a and a second phase b. Exemplarily, the first mode may be a low-frequency mode.

[0020] In the first stage a, the backlight module of the display device is in a bright state, meaning that the displayed image is visible to the human eye during the first stage a. In the second stage b, the backlight module of the display device is in a dark state, meaning that the displayed image is not visible to the human eye during the second stage b.

[0021] Phase 2b may include at least one of sub-phase 1b1 and sub-phase 2b2. That is, phase 2b may include only sub-phase 1b1, phase 2b may include only sub-phase 2b2, or phase 2b may include both sub-phase 1b1 and sub-phase 2b2. These three cases will be described in detail below.

[0022] The start time of the first sub-stage b1 can be the start time of the data write cycle. The end time of the second sub-stage b2 is the end time of the data write cycle. For example, when a data write cycle is one frame, the first sub-stage b1 may include the beginning of the frame, and the second sub-stage b2 may include the end of the frame.

[0023] According to the embodiment of this application, the display device includes a first sub-stage and / or a second sub-stage in at least one data writing cycle of the display panel. The start time of the first sub-stage is the start time of the data writing cycle, and the end time of the second sub-stage is the end time of the data writing cycle. Since the human eye can see the display screen when the backlight module is in a bright state and cannot see the display screen when the backlight module is in a dark state, by setting the backlight module of the display device to a dark state in the first sub-stage and / or the second sub-stage, the maximum voltage difference that the human eye can perceive is less than the voltage difference between the start and end times of the data writing cycle. That is, the voltage difference that causes the display brightness difference of the display device is reduced, and the display time that the human eye can perceive is reduced, thereby helping to improve the flicker problem of the display device under low-frequency drive and improve the display effect of the display device.

[0024] In some alternative implementations, in the second mode, the duration of the data write cycle of the display device is shorter than the duration of the data write cycle of the display device in the first mode.

[0025] For example, the second mode can be a high-frequency mode. The data writing cycle of the display device in the second mode may include a data writing phase and a holding phase, or the data writing cycle of the display device in the second mode may only include a data writing phase, which is not limited here.

[0026] Optionally, during the data writing cycle in the second mode, the backlight module of the display device is in an on state.

[0027] The inventors discovered that if the backlight module of a display device remains in a dark state for too long during the data writing cycle, the human eye will be unable to see the displayed image for an excessively long period, resulting in noticeable flickering during display. Conversely, if the backlight module remains in a dark state for too short a period, the improvement in flickering caused by leakage under low-frequency drive is less effective. Therefore, if... Figure 3 As shown, in some optional implementations, the duration of the data writing cycle is T, and the duration of the second stage b is T1, where T1 ≤ T / 4. Thus, by setting the duration T1 of the second stage b to be less than or equal to 1 / 4 of the data writing cycle duration T, it is beneficial to improve the flickering problem that is perceptible to the human eye caused by the backlight module being in a dark state for too long, and to further improve the flickering problem caused by leakage current under low-frequency driving, thereby further improving the display effect of the display device.

[0028] For example, if the duration T of the data writing cycle is 66.66 milliseconds, then the duration T1 of the second stage b can be less than or equal to 16.665 milliseconds. In this case, the duration of the second stage b can be 6.94 milliseconds, 10 milliseconds, etc. Correspondingly, the duration of the first stage a can be 59.72 milliseconds, 56.66 milliseconds, etc.

[0029] Optionally, the duration of the data write cycle T is ≥ 50 milliseconds.

[0030] In some alternative implementations, T / 4 ≤ T1 < T. That is, the duration T1 of the second stage b can be greater than 1 / 4 of the duration T of the data write cycle, but less than the duration T of the data write cycle.

[0031] In some alternative implementations, such as Figure 4 As shown, the second stage b may include a first sub-stage b1, the duration of the data writing cycle is T, and the duration of the first sub-stage b1 is T11, where T11 ≤ T / 4. Thus, by setting the duration T11 of the first sub-stage b1 to be less than or equal to 1 / 4 of the data writing cycle duration T, it is beneficial to improve the problem of flickering during display caused by the backlight module being in a dark state for too long, and to further improve the flickering problem of the display device under low-frequency driving, thereby further improving the display effect of the display device.

[0032] Still Figure 4As shown, when the display device only includes the first stage a, i.e., the backlight module is always on during the data writing cycle of the display device, the display duration that the human eye can perceive is the duration T of the entire data writing cycle. The voltage difference causing the difference in display brightness is V1, which is the voltage difference between the pixel electrode voltage at the beginning and end of the entire data writing cycle. When the display device includes a first sub-stage b1 with a duration of T11, the display duration that the human eye can perceive is T-T11. The voltage difference causing the difference in display brightness is V2, which is the voltage difference between the pixel electrode voltage at the end of the first sub-stage b1 and the pixel electrode voltage at the end of the entire data writing cycle. The value of voltage difference V1 is greater than the value of voltage difference V2, i.e., the voltage difference that the human eye can perceive is reduced, thereby reducing the brightness difference of the display image that the human eye can perceive. This helps to improve the flicker problem of the display device under low-frequency drive and improve the display effect of the display device.

[0033] For example, if the duration T of the data writing cycle is 66.66 milliseconds, then the duration T11 of the first sub-stage b1 can be less than or equal to 16.67 milliseconds. In this case, the duration of the first sub-stage b1 can be 5 milliseconds, 6.94 milliseconds, etc. Correspondingly, the duration of the first stage a can be 61.66 milliseconds, 59.72 milliseconds, etc.

[0034] In some alternative implementations, T11 > T / 4. That is, the duration T11 of the first sub-stage b1 can be greater than 1 / 4 of the duration T of the data write cycle.

[0035] Understandably, if the second stage b of the data writing cycle only includes the first sub-stage b1, the duration T1 of the second stage b is equal to the duration T11 of the first sub-stage b1, that is, T1=T11.

[0036] In some alternative implementations, it remains as follows Figure 4 As shown, the data writing cycle can include a data writing phase (Driving) and a holding phase (Holding). The duration of the data writing phase (Driving) is T2, where T2 ≤ T11 ≤ T / 4. Thus, by setting the duration T11 of the first sub-phase b1 to be greater than or equal to the duration T2 of the data writing phase (Driving) and less than or equal to 1 / 4 of the data writing cycle duration T, the display module is in a dark state during the data writing phase (Driving), making the image during this phase invisible to the human eye. This helps to further improve the flicker problem of the display device under low-frequency driving.

[0037] For example, the duration T of the data writing cycle is 66.66 milliseconds, the duration T2 of the data writing stage Driving is 6.94 milliseconds, the duration of the holding stage Holding is 59.72 milliseconds, and the duration T11 of the first sub-stage b1 can be 7 milliseconds, 8.94 milliseconds, etc.

[0038] Optionally, the duration T2 of the data writing phase Driving can satisfy the following formula: T2=1 / f, where f is the data writing frequency of the display device during the data writing phase Driving.

[0039] In some alternative implementations, T11 < T2. That is, the duration T11 of the first sub-stage b1 can be less than the duration T2 of the data writing stage (Driving). In the first sub-stage b1, by setting the backlight module of the display device to a dark state, the maximum voltage difference when the backlight module is in a bright state is less than the voltage difference between the start and end times of the data writing cycle. This reduces the voltage difference that causes differences in the display brightness of the display device, reduces the display duration that is perceptible to the human eye, and thus helps to improve the flicker problem of the display device under low-frequency driving and improve the display effect of the display device.

[0040] In some alternative implementations, such as Figure 5 As shown, the second stage b may include a second sub-stage b2. The duration of the data writing cycle is T, and the duration of the second sub-stage b2 is T12, where T12 ≤ T / 4. Thus, by setting the duration T12 of the second sub-stage b2 to be less than or equal to 1 / 4 of the data writing cycle duration T, it is beneficial to improve the problem of flickering during display caused by the backlight module being in a dark state for too long, and to further improve the flickering problem of the display device under low-frequency driving, thereby further improving the display effect of the display device.

[0041] Still Figure 5As shown, when the display device only includes the first stage a, i.e., the backlight module is always on during the data writing cycle, the display duration perceptible to the human eye is the duration T of the entire data writing cycle. The voltage difference causing the brightness difference in the display device is V1, which is the voltage difference between the pixel electrode voltage at the beginning and end of the entire data writing cycle. When the display device includes a second sub-stage b2 with a duration of T12, the display duration perceptible to the human eye is T-T12. The voltage difference causing the brightness difference in the display device is V2, which is the voltage difference between the pixel electrode voltage at the beginning of the entire data writing cycle and the pixel electrode voltage at the beginning of the second sub-stage b2. The value of voltage difference V1 is greater than the value of voltage difference V2, meaning the voltage difference perceptible to the human eye is reduced, thereby reducing the brightness difference of the displayed image perceptible to the human eye. This helps to improve the flicker problem of the display device under low-frequency driving and improves the display effect.

[0042] For example, if the duration T of the data writing cycle is 66.66 milliseconds, then the duration T12 of the second sub-stage b2 can be less than or equal to 16.67 milliseconds. In this case, the duration of the second sub-stage b2 can be 6 milliseconds, 6.94 milliseconds, etc. Correspondingly, the duration of the first stage a can be 60.66 milliseconds, 59.72 milliseconds, etc.

[0043] In some alternative implementations, T / 4 < T12 < T. That is, the duration T12 of the second sub-stage b2 can be greater than 1 / 4 of the duration T of the data write cycle, and less than or equal to the duration T of the data write cycle.

[0044] Understandably, if the second stage b of the data writing cycle only includes the second sub-stage b2, the duration T1 of the second stage b is equal to the duration T12 of the second sub-stage b2, that is, T1=T12.

[0045] In some alternative implementations, such as Figure 3 As shown, the second stage b may include a first sub-stage b1 and a second sub-stage b2. The duration of the data writing cycle is T, the duration of the first sub-stage b1 is T13, and the duration of the second sub-stage b2 is T14, where T13 + T14 ≤ T / 4. Thus, by setting the sum of the durations T13 of the first sub-stage b1 and T14 of the second sub-stage b2 to be less than or equal to 1 / 4 of the data writing cycle duration T, it is beneficial to improve the flickering problem caused by the backlight module being in a dark state for too long, and to further improve the flickering problem of the display device under low-frequency driving, thereby further improving the display effect of the display device.

[0046] Still Figure 3As shown, when the display device only includes the first stage a, i.e., the backlight module is always on during the data writing cycle of the display device, the display duration that the human eye can perceive is the duration T of the entire data writing cycle. The voltage difference causing the difference in display brightness is V1, which is the voltage difference between the pixel electrode voltage at the beginning and end of the entire data writing cycle. When the display device includes a first sub-stage b1 with a duration of T13 and a second sub-stage b2 with a duration of T14, the display duration that the human eye can perceive is T-T1-T2. The voltage difference causing the difference in display brightness is V2, which is the voltage difference between the pixel electrode voltage at the end of the first sub-stage b1 and the pixel electrode voltage at the beginning of the second sub-stage b2. The value of voltage difference V1 is greater than the value of voltage difference V2, i.e., the voltage difference that the human eye can perceive is reduced, thereby reducing the brightness difference of the display image that the human eye can perceive. This helps to improve the flicker problem of the display device under low-frequency driving and improve the display effect of the display device.

[0047] For example, if the duration T of the data writing cycle is 66.66 milliseconds, then the sum of the duration T13 of the first sub-stage b1 and the duration T14 of the second sub-stage b2 can be less than or equal to 16.67 milliseconds. In this case, the duration of the first sub-stage b2 can be 5 milliseconds, 10 milliseconds, etc., and the duration of the second sub-stage b2 can be 6 milliseconds, 6.94 milliseconds, etc. Correspondingly, the duration of the first stage a can be 55.66 milliseconds, 49.72 milliseconds, etc.

[0048] In some alternative implementations, T / 4 < T13 + T14 < T. That is, the sum of the duration T13 of the first sub-stage b1 and the duration T14 of the second sub-stage b2 can be greater than 1 / 4 of the data write cycle duration T1, but less than the data write cycle T.

[0049] Understandably, in the case that the second stage b of the data writing cycle includes the first sub-stage b1 and the second sub-stage b2, the duration T1 of the second stage b is equal to the sum of the duration T13 of the first sub-stage b1 and the duration T14 of the second sub-stage b2, that is, T1 = T13 + T14.

[0050] In some optional implementations, T13 < T / 4, T14 < T / 4. Thus, when the sum of the duration T13 of the first sub-stage b1 and the duration T14 of the second sub-stage b2 is less than 1 / 4 of the data write cycle duration T1, by setting the duration T13 of the first sub-stage b1 to be less than T / 4 and the duration T14 of the second sub-stage b2 to be less than T / 4, it is beneficial to improve the flickering problem that is perceptible to the human eye caused by the backlight module of the display device being in a dark state for too long, and it is also beneficial to further improve the flickering problem caused by leakage current under low-frequency drive, thereby further improving the display effect of the display device.

[0051] It should be noted that, in this embodiment, the duration T13 of the first sub-stage b1 may be greater than or equal to the duration T14 of the second sub-stage b2, or may be less than the duration T14 of the second sub-stage b2, and no limitation is made here.

[0052] In some optional implementations, the data writing cycle includes a data writing phase and a holding phase, with the duration of the data writing phase being T2, where T2 ≤ T13 < T / 4. Thus, by setting the duration T13 of the first sub-phase b1 to be greater than or equal to the duration T2 of the data writing phase (Driving), and less than or equal to 1 / 4 of the data writing cycle duration T, the display module is in a dark state during the data writing phase (Driving), making the image during this phase undetectable to the human eye. This further helps to improve the flickering problem of the display device under low-frequency driving.

[0053] For example, the duration T of the data writing cycle is 66.66 milliseconds, the duration T2 of the data writing stage Driving is 6.94 milliseconds, the duration of the holding stage Holding is 59.72 milliseconds, and the duration T13 of the first sub-stage b1 can be 6.94 milliseconds, 9 milliseconds, etc.

[0054] In some alternative implementations, such as Figure 6 As shown, each of the multiple data writing cycles of the display device includes a first stage a and a second stage b. Thus, by setting the second stage b in each of the multiple data writing cycles, the maximum voltage difference perceptible to the human eye in each data writing cycle is less than the voltage difference between the start and end times of the data writing cycle. This reduces the voltage difference that causes differences in display brightness, decreases the display duration perceptible to the human eye, and thus helps to improve the flicker problem of the display device under low-frequency drive, thereby improving the display effect.

[0055] It is understood that the multiple data write cycles of the display device can be a portion of the display device's data write cycles or all of the display device's data write cycles. These multiple data write cycles can include at least two consecutive data write cycles or multiple non-consecutive data write cycles, without limitation herein. For example, the display device may include 100 data write cycles, and the multiple data write cycles can be 2 data write cycles, 3 data write cycles, 50 data write cycles, 100 data write cycles, etc., out of the 100 data write cycles.

[0056] In some alternative implementations, such as Figure 6 , Figures 8 to 10 As shown, the duration of the second stage b in each data write cycle is equal. Therefore, by setting the duration of the second stage b in each data write cycle to be equal, it is beneficial to simplify the driving timing of the backlight module.

[0057] For example, multiple data write cycles are two data write cycles out of 100 data write cycles, and the duration of the second stage b in these two data write cycles is 10 milliseconds.

[0058] In some alternative implementations, such as Figure 7 As shown, the duration of the second stage b in the first data write cycle is T3, and the duration of the second stage b in all other data write cycles is T4, where T3 < T4. Thus, by setting the duration T3 of the second stage b in the first data write cycle to be shorter than the duration T4 of the second stage b in other data write cycles, the duration of the first data write cycle that is perceptible to the human eye is longer, which helps to compensate for the brightness of the display device during the first data write cycle.

[0059] For example, the duration T of the first data write cycle and the duration T of the second data write cycle are both 66.66 milliseconds. The duration T3 of the first sub-stage b1 in the first data write cycle can be 7 milliseconds, 8 milliseconds, etc., and the duration T4 of the first sub-stage b1 in the second data write cycle can be 9 milliseconds, 11 milliseconds, etc.

[0060] Figure 7The duration of the first and second data write cycles is T. V1 represents the voltage difference between the pixel electrode voltage at the start and end of each data write cycle. V2 represents the voltage difference between the pixel electrode voltage at the end of the first sub-stage b1 within the first data write cycle and the pixel electrode voltage at the end of the first data write cycle. V3 represents the voltage difference between the pixel electrode voltage at the end of the first sub-stage b1 within the second data write cycle and the pixel electrode voltage at the end of the second data write cycle. It is evident that both V2 and V3 are less than V1, meaning that the voltage difference perceptible to the human eye within each data write cycle is reduced. This, in turn, reduces the brightness difference of the displayed image perceptible to the human eye within each data write cycle, thereby helping to improve the flicker problem of the display device under low-frequency driving and enhancing the display effect.

[0061] In some alternative implementations, such as Figure 7 and Figure 8 As shown, the second stage b of each data writing cycle includes a first sub-stage b1. Thus, by setting a first sub-stage b1 in each data writing cycle, the maximum voltage difference perceptible to the human eye within each data writing cycle is less than the voltage difference between the start and end times of the data writing cycle. This reduces the voltage difference that causes differences in display brightness within each data writing cycle, thus reducing the perceptible display duration and improving the flicker problem of the display device under low-frequency drive, thereby enhancing the display effect.

[0062] like Figure 7 As shown, the duration of the first sub-stage b1 of the first data write cycle can be shorter than the duration of the first sub-stage b1 of the second data write cycle. For example... Figure 8 As shown, the duration of the first sub-stage b1 of the first data write cycle can be equal to the duration of the first sub-stage b1 of the second data write cycle. In some other embodiments, the duration of the first sub-stage b1 of the first data write cycle can also be greater than the duration of the first sub-stage b1 of the second data write cycle.

[0063] like Figure 8As shown, the duration T3 of the first sub-stage b1 of the first data write cycle is equal to the duration T4 of the first sub-stage b1 of the second data write cycle. Within both the first and second data write cycles, the visible display duration is T-T3. The voltage difference causing the brightness difference in the display device is V2, which is the voltage difference between the pixel electrode voltage at the end of the first sub-stage b1 and the pixel electrode voltage at the end of the data write cycle. Compared to the voltage difference V1 between the pixel electrode voltage at the beginning and end of each data write cycle, this reduces the voltage difference perceptible to the human eye, thereby reducing the visible brightness difference in the display image. This helps to improve the flicker problem of the display device under low-frequency drive and enhances the display effect.

[0064] In other alternative implementations, such as Figure 9 As shown, the second stage b of each data writing cycle includes a second sub-stage b2. Thus, by setting a second sub-stage b2 in each data writing cycle, the maximum voltage difference perceptible to the human eye within each data writing cycle is less than the voltage difference between the start and end times of the data writing cycle. This reduces the voltage difference that causes differences in display brightness within each data writing cycle, thus reducing the perceptible display duration and helping to improve the flicker problem of the display device under low-frequency drive, thereby enhancing the display effect.

[0065] It is understandable that the duration of the second sub-stage b2 of the first data write cycle can be less than or equal to the duration of the second sub-stage b2 of the second data write cycle, or it can be greater than the duration of the second sub-stage b2 of the second data write cycle, without any limitation here.

[0066] like Figure 9 As shown, the duration T3 of the second sub-stage b2 of the first data writing cycle is equal to the duration T4 of the second sub-stage b2 of the second data writing cycle. Within both the first and second data writing cycles, the perceptible display duration is T-T3. The voltage difference causing the brightness difference in the display device is V2, which is the voltage difference between the pixel electrode voltage at the start of each data writing cycle and the pixel electrode voltage at the start of the first sub-stage b1. Compared to the voltage difference V1 between the pixel electrode voltage at the start and end of each data writing cycle, this reduces the perceptible voltage difference, thereby reducing the perceptible brightness difference in the display image. This helps to improve the flicker problem of the display device under low-frequency drive and enhances the display effect.

[0067] In some alternative implementations, such as Figure 10As shown, the second stage b of each data writing cycle includes a first sub-stage b1 and a second sub-stage b2. Thus, by setting a first sub-stage b1 and a second sub-stage b2 in each data writing cycle, the maximum voltage difference perceptible to the human eye within each data writing cycle is less than the voltage difference between the start and end times of the data writing cycle. This reduces the voltage difference that causes differences in display brightness within each data writing cycle, thus reducing the display duration perceptible to the human eye. This helps to improve the flicker problem of the display device under low-frequency drive and enhances the display effect.

[0068] It is understandable that the duration of the first sub-stage b1 of the first data write cycle can be less than or equal to the duration of the first sub-stage b1 of the second data write cycle, or it can be greater than the duration of the second sub-stage b2 of the second data write cycle. The duration of the first sub-stage b1 of the first data write cycle can be less than or equal to the duration of the second sub-stage b2 of the second data write cycle, or it can be greater than the duration of the second sub-stage b2 of the second data write cycle. No limitation is made here.

[0069] like Figure 10 As shown, the duration T31 of the first sub-stage b1 of the first data writing cycle is equal to the duration T41 of the first sub-stage b1 of the second data writing cycle, and the duration T32 of the second sub-stage b2 of the first data writing cycle is equal to the duration T42 of the second sub-stage b2 of the second data writing cycle. Within both the first and second data writing cycles, the display duration perceptible to the human eye is T-T31--T32. The voltage difference causing the difference in display brightness is V2, which is the voltage difference between the pixel electrode at the end of the first sub-stage b1 and the pixel electrode at the beginning of the second sub-stage b2 within each data writing cycle. Compared to the voltage difference V1 between the pixel electrode at the beginning and end of each data writing cycle, the voltage difference perceptible to the human eye is reduced, thereby reducing the brightness difference of the display image perceptible to the human eye. This helps to improve the flicker problem of the display device under low-frequency drive and improve the display effect of the display device.

[0070] Understandably, T3 = T31 + T32, and T4 = T41 + T42. That is, for the first data write cycle, the duration T3 of the second stage b1 is equal to the sum of the duration T31 of the first sub-stage b1 and the duration T32 of the second sub-stage b2; for the second data write cycle, the duration T4 of the second stage b1 is equal to the sum of the duration T41 of the first sub-stage b1 and the duration T42 of the second sub-stage b2.

[0071] In some alternative implementations, the second phase of at least one of the plurality of data write cycles includes a first sub-phase, and the second phase of at least one of the plurality of data write cycles includes a second sub-phase.

[0072] As an example, the second stage of the i-th data write cycle includes the first sub-stage, and the second stage of the (i+j)-th data write cycle includes the second sub-stage. Here, i and j are both integers greater than or equal to 1.

[0073] As another example, the second stage of the nth data write cycle includes a first sub-stage and a second sub-stage, and the second stage of the mth data write cycle includes a first sub-stage. Here, n and m are both integers greater than or equal to 1.

[0074] As another example, the second stage of the p-th data write cycle includes a second sub-stage, and the second stage of the q-th data write cycle includes a first sub-stage and a second sub-stage. Here, p and q are both integers greater than or equal to 1.

[0075] Based on the same inventive concept, embodiments of this application also provide a driving method for a display device. At least one data writing cycle of the display device includes a first stage and a second stage, the second stage including at least one of a first sub-stage and a second sub-stage, the start time of the first sub-stage being the start time of the data writing cycle, and the end time of the second sub-stage being the end time of the data writing cycle.

[0076] like Figure 11 As shown, the driving method for the display device may include S1110.

[0077] S1110. In the first stage, the backlight module of the control display device is in a bright state, and in the second stage, the backlight module of the control display device is in a dark state.

[0078] According to the driving method of the display device provided in the embodiments of this application, in the second stage, the backlight module of the display device is controlled to be in a dark state. The start time of the first sub-stage is the start time of the data writing cycle, and the start time of the second sub-stage is the end time of the data writing cycle. This makes the maximum voltage difference that the human eye can perceive less than the voltage difference between the start and end times of the data writing cycle. In other words, it reduces the voltage difference that causes the display brightness difference of the display device and reduces the display time that the human eye can perceive. This helps to improve the flicker problem of the display device under low-frequency driving and improve the display effect of the display device.

[0079] For example, in the first stage, the backlight module of the display device is turned on to control the backlight module of the display device to be in a bright state; in the second stage, the backlight module of the display device is turned off to control the backlight module of the display device to be in a dark state.

[0080] Optionally, during the second stage, controlling the backlight module of the display device to be in a dark state may include: During the first sub-stage, the backlight module of the control display device is in a dark state; And / or, during the second sub-stage, the backlight module of the control display device is in a dark state.

[0081] The driving method for the display device provided in this application has the beneficial effects of the display device provided in this application. For details, please refer to the specific description of the display device in the above embodiments. This embodiment will not repeat the description here.

[0082] The embodiments described above are not exhaustive, nor do they limit the application to the specific embodiments described herein. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to effectively utilize this application and its modifications. This application is limited only by the claims and their full scope and equivalents.

Claims

1. A display device, characterized in that, In low-frequency driving mode, at least one data write cycle of the display device includes a first stage and a second stage. In the first stage, the backlight module of the display device is in a bright state, and in the second stage, the backlight module of the display device is in a dark state. The second stage includes at least one of a first sub-stage and a second sub-stage. The start time of the first sub-stage is the start time of the data write cycle, and the end time of the second sub-stage is the end time of the data write cycle. The data write cycle includes a data write stage and a hold stage. The first sub-stage at least covers the data write stage, and the start time of the second sub-stage is located in the hold stage.

2. The display device according to claim 1, characterized in that, The duration of the data writing cycle is T, and the duration of the second stage is T1, where T1 ≤ T / 4.

3. The display device according to claim 1, characterized in that, The second stage includes the first sub-stage, the duration of the data writing cycle is T, the duration of the first sub-stage is T11, and T11≤T / 4.

4. The display device according to claim 3, characterized in that, The duration of the data writing phase is T2, where T2 ≤ T11 ≤ T / 4.

5. The display device according to claim 1, characterized in that, The second stage includes the second sub-stage, the duration of the data writing cycle is T, the duration of the second sub-stage is T12, and T12≤T / 4.

6. The display device according to claim 1, characterized in that, The second stage includes the first sub-stage and the second sub-stage. The duration of the data writing cycle is T, the duration of the first sub-stage is T13, the duration of the second sub-stage is T14, and T13+T14≤T / 4.

7. The display device according to claim 6, characterized in that, T13 < T / 4, T14 < T / 4.

8. The display device according to claim 7, characterized in that, The data writing cycle includes a data writing phase and a holding phase. The duration of the data writing phase is T2, where T2 ≤ T13 < T / 4.

9. The display device according to claim 1, characterized in that, The multiple data writing cycles of the display device all include the first stage and the second stage.

10. The display device according to claim 9, characterized in that, The duration of the second phase in each of the aforementioned data writing cycles is equal.

11. The display device according to claim 9, characterized in that, The duration of the second stage in the first data write cycle is T3, and the duration of the second stage in all other data write cycles except the first data write cycle is T4, where T3 < T4.

12. The display device according to claim 9, characterized in that, The second stage of each of the aforementioned data writing cycles includes the first sub-stage.

13. The display device according to claim 9, characterized in that, The second stage of each of the data writing cycles includes the second sub-stage.

14. The display device according to claim 9, characterized in that, The second stage of each of the data writing cycles includes the first sub-stage and the second sub-stage.

15. A driving method for a display device, characterized in that, In low-frequency driving mode, at least one data write cycle of the display device includes a first stage and a second stage, the second stage including at least one of a first sub-stage and a second sub-stage, the start time of the first sub-stage being the start time of the data write cycle, and the end time of the second sub-stage being the end time of the data write cycle; the data write cycle includes a data write stage and a hold stage; the first sub-stage at least covers the data write stage, and the start time of the second sub-stage is located in the hold stage; The method includes: In the first stage, the backlight module of the display device is controlled to be in a bright state, and in the second stage, the backlight module of the display device is controlled to be in a dark state.

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