Driving method of display device, display device, electronic device, and storage medium

Abstract

The present disclosure provides a display device driving method, a display device, an electronic device and a storage medium, the display device comprising a liquid crystal display panel and a backlight module, the liquid crystal display panel comprising a plurality of display partitions, the backlight module comprising a plurality of backlight partitions, the plurality of display partitions corresponding to the plurality of backlight partitions one by one, the method comprising: in a first time period, sequentially scanning the plurality of display partitions; in a second time period, sequentially lighting up the plurality of backlight partitions; wherein the first time period comprises a first target time period corresponding to a target display partition in the plurality of display partitions, the second time period comprises a second target time period corresponding to a target backlight partition in the plurality of backlight partitions, the target display partition corresponding to the target backlight partition; the time interval of the first target time period and the second target time period is not less than the liquid crystal response time.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of display, and in particular, to a driving method of display device, display device, electronic equipment and storage medium. BACKGROUND

[0002] At present, the requirement of virtual reality (VR) products on display refresh rate is higher and higher, but under the limitation of liquid crystal response time and screen scanning time, high refresh rate has always been a bottleneck. Due to the particularity of VR products, if there is an overlap between the backlight on time and the liquid crystal response time, ghosting phenomenon will occur.

[0003] The inventors of the present disclosure find that in the related art, when a display device implements high refresh rate, ghosting phenomenon exists. SUMMARY

[0004] Therefore, the purpose of the present disclosure is to provide a driving method of display device, display device, electronic equipment and storage medium to solve or partially solve the above problems.

[0005] To achieve the above purpose, the first aspect of the present disclosure provides a driving method of display device, the display device comprising a liquid crystal display panel and a backlight module, the liquid crystal display panel comprising a plurality of display partitions, the backlight module comprising a plurality of backlight partitions, the plurality of display partitions corresponding to the plurality of backlight partitions one by one, comprising:

[0006] sequentially scanning the plurality of display partitions in a first time period;

[0007] sequentially lighting the plurality of backlight partitions in a second time period;

[0008] wherein the first time period comprises a first target time period corresponding to a target display partition in the plurality of display partitions, the second time period comprises a second target time period corresponding to a target backlight partition in the plurality of backlight partitions, the target display partition corresponding to the target backlight partition;

[0009] The time interval between the first target time period and the second target time period is not less than the liquid crystal response time.

[0010] Based on the same inventive concept, the second aspect of the present disclosure provides a display device, comprising:

[0011] a liquid crystal display panel comprising a plurality of display partitions;

[0012] a backlight module disposed on the backlight side of the liquid crystal display panel, comprising a plurality of backlight partitions, wherein the backlight partitions correspond to the display partitions one by one and are configured to provide backlight for the display partitions;

[0013] The control unit is electrically coupled with the liquid crystal display panel and the backlight module respectively, and is configured to execute the driving method of the display device.

[0014] Based on the same inventive concept, a third aspect of the present disclosure provides an electronic device comprising a memory, a processor, and a computer program stored on the memory and executable by the processor, wherein the processor implements the method described above when executing the computer program.

[0015] Based on the same inventive concept, a fourth aspect of the present disclosure provides a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute the method described above.

[0016] As can be seen from the above, the present disclosure provides a driving method of a display device and a display device, in which a plurality of display partitions are sequentially scanned in a first time period, and a plurality of backlight partitions are sequentially lit in a second time period, the first time period includes a first target time period corresponding to a target display partition in the plurality of display partitions, the second time period includes a second target time period corresponding to a target backlight partition in the plurality of backlight partitions, the target display partition corresponds to the target backlight partition, and the time interval between the first target time period and the second target time period is not less than the liquid crystal response time. The liquid crystal response time is left between the second time period in which the backlight partition is lit and the scanning time of the display partition. That is, the lighting time of the target backlight partition is calculated under the condition that the liquid crystal response time is sufficient, so as to avoid the overlap between the lighting time of the target backlight partition and the liquid crystal response time, and to avoid the generation of the ghosting phenomenon, thereby achieving the effect of neither generating the ghosting phenomenon nor guaranteeing the display refresh rate. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present disclosure or the related art, the following will briefly introduce the drawings needed to be used in the embodiments or the related art descriptions. Obviously, the drawings in the following description are only embodiments of the present disclosure, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0018] Figure 1A A flowchart of an exemplary method provided by the embodiments of the present disclosure is shown in the figure;

[0019] Figure 1B A timing diagram of an exemplary display device is shown in the figure;

[0020] Figure 1C A timing diagram of a backlight module of an embodiment of the present disclosure is shown in the figure;

[0021] Figure 1D A timing diagram of an abnormal display backlight module according to an embodiment of the present disclosure;

[0022] Figure 1E A timing diagram of a normal display backlight module according to an embodiment of the present disclosure;

[0023] Figure 2A A schematic diagram of an exemplary display device according to an embodiment of the present disclosure;

[0024] Figure 2B Another schematic diagram of an exemplary display device according to an embodiment of the present disclosure;

[0025] Figure 2C A partitioning diagram of a Mini LED backlight according to an embodiment of the present disclosure;

[0026] Figure 2D A circuit connection diagram in a backlight partition according to an embodiment of the present disclosure;

[0027] Figure 2E A Mini LED backlight diagram after being turned on according to an embodiment of the present disclosure;

[0028] Figure 3 A structural diagram of an exemplary electronic device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below with reference to specific embodiments and drawings.

[0030] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should be understood as the general meaning understood by those skilled in the art to which the present disclosure belongs. The terms "first", "second", and similar terms used in the embodiments of the present disclosure do not represent any order, number, or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "up", "down", "left", "right", and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may also change accordingly.

[0031] With the continuous development of display technology, there are currently various display technologies of different principles. One of the display devices is a liquid crystal display device.

[0032] Since liquid crystal display devices belong to passive display devices, a backlight module is usually needed to provide a backlight source. In order to realize dynamic adjustment of the backlight source, an implementation manner of a direct type backlight module is to use a light emitting substrate composed of array-arranged light emitting units to provide the backlight source. The light emitting unit can be a light emitting diode (LED), a sub-millimeter light emitting diode (MiniLED) or a micron light emitting diode (MicroLED). Among them, the MiniLED light emitting substrate refers to a backlight or display product with local dimming capability made of MiniLED chips or MiniLED packaged devices. With the continuous improvement and cost reduction of MiniLED technology, the MiniLED light emitting substrate has penetrated into display products including notebook computers, displays, televisions and the like due to its advantages of super-high brightness, contrast, super-wide color gamut, resolution and refresh rate, and has been paid more and more attention in recent years. Due to the superior performance of the display product with local dimming capability, it has also been widely used in VR products.

[0033] At present, the requirement of VR products on display refresh rate is higher and higher, but under the limitation of liquid crystal response time and screen scanning time, high refresh rate has always been a bottleneck. The time of VR display one frame at least contains three parts: screen scanning time, liquid crystal response time and backlight lighting time. Due to the particularity of VR products, the backlight frame time and the liquid crystal response time cannot overlap, otherwise the ghosting phenomenon will occur.

[0034] In the related art, in order to pursue high refresh rate, the one-frame time is shortened, and after removing the backlight frame time and the screen scanning time, the liquid crystal response time is insufficient, and the phenomenon that the backlight frame time and the liquid crystal response time overlap, that is, the ghosting phenomenon occurs.

[0035] Therefore, how to ensure high refresh rate while avoiding ghosting phenomenon has become an important research problem.

[0036] To this end, the present disclosure provides a driving method of a display device and the display device. In a first time period, a plurality of display partitions are sequentially scanned. In a second time period, a plurality of backlight partitions are sequentially lighted up. The first time period includes a first target time period corresponding to a target display partition in the plurality of display partitions. The second time period includes a second target time period corresponding to a target backlight partition in the plurality of backlight partitions. The time interval between the first target time period and the second target time period is not less than a liquid crystal response time. The liquid crystal response time is left between the second time period in which the backlight partition is lighted up and the scanning time of the display partition. That is, the light-up time of the target backlight partition is calculated under the condition that the liquid crystal response time is sufficient, so as to avoid the overlap between the light-up time of the target backlight partition and the liquid crystal response time, and to avoid the generation of the ghosting phenomenon. The display refresh rate effect can be ensured without the generation of the ghosting phenomenon.

[0037] The embodiments of the present application will be described below with reference to the accompanying drawings.

[0038] Figure 1A A flowchart of an exemplary method provided by an embodiment of the present disclosure is shown. The display device includes a liquid crystal display panel and a backlight module. The liquid crystal display panel includes a plurality of display partitions. The backlight module includes a plurality of backlight partitions. The plurality of display partitions correspond to the plurality of backlight partitions one by one. As shown in Figure 1A , the method includes:

[0039] Step 101, in a first time period, sequentially scanning the plurality of display partitions.

[0040] Step 102, in a second time period, sequentially light up the plurality of backlight partitions.

[0041] The first time period includes a first target time period corresponding to a target display partition in the plurality of display partitions. The second time period includes a second target time period corresponding to a target backlight partition in the plurality of backlight partitions. The target display partition corresponds to the target backlight partition.

[0042] The time interval between the first target time period and the second target time period is not less than a liquid crystal response time.

[0043] In a specific implementation, Figure 1B A timing diagram of an exemplary display device is shown. The display device is composed of a liquid crystal display panel and a backlight module (BLU). The backlight module is synchronized with the refresh frequency of the liquid crystal display panel, as shown in Figure 1B . After the start of a frame, the liquid crystal display panel starts to scan row by row. After scanning each row of pixels, the row of liquid crystal starts to respond. As shown in Figure 1BIn the middle, the TE (Tearing Effect Signal) signal is low when scanning, and the TE signal is high when the signal is in the non-scanning period. In order to eliminate the residual image, the backlight module 104 starts to light up after the liquid crystal response is completed. For the backlight module of the Mini Light Emitting Diode (Mini LED), taking the Lighting Emitting Diode driver (LED driver) with 8-way data selector (8 MUX) as an example, 8 MUX switches will start to light up the corresponding backlight sub-area in turn after the liquid crystal response is completed.

[0044] In the duration of the nth frame, the duration of the nth frame is divided into liquid crystal response time and backlight module lighting time. Since the liquid crystal response time is the inherent characteristic of the liquid crystal, its duration needs to meet certain duration requirements, thereby limiting the lighting time of the backlight module 104, so that the refresh frequency of the display module cannot be infinitely improved.

[0045] Exemplarily, taking the refresh rate of the liquid crystal display panel as 120Hz and the longitudinal resolution of the display sub-area of the liquid crystal display panel as 2304x2304, the frame time of the display device is 8.33ms, and if the scanning time of a row of driver IC is 1.8, the total scanning time in a frame time is 4.15ms. If the duty cycle of the pulse width modulation signal is 10%, the total backlight opening time of the display device is 0.83ms, and the calculation result is that the response time of the liquid crystal in a frame time is 3.35ms. The liquid crystal response time of the VR device is generally 4ms to 5ms, and at this time, the response time of the liquid crystal is insufficient to meet the normal liquid crystal response time, that is, at this time, if the refresh rate of 120Hz is to be met, the liquid crystal response time and the backlight lighting time will overlap, causing the ghosting phenomenon. If there is no ghosting phenomenon, the high refresh rate of 120Hz cannot be met.

[0046] In order to solve the above technical problems, the embodiment provides a driving method of a display device, the display device comprising a liquid crystal display panel and a backlight module, the liquid crystal display panel comprising a plurality of display sub-areas, and the backlight module comprising a plurality of backlight sub-areas, the display sub-area corresponding to the backlight sub-area, that is, the target backlight sub-area is used to provide backlight for the target display sub-area, that is, the target backlight sub-area and the target display sub-area are in the same projection.

[0047] Figure 1C The timing diagram of the backlight module of the embodiment of the present disclosure is shown.

[0048] Within a first time period, the plurality of display partitions are scanned sequentially, the first time period including the first target time period corresponding to the target display partition among the plurality of display partitions. Figure 1C In T2-1 to T2-8, the scan time is the total scan time for the number of rows corresponding to the target display partition. That is, the display partition corresponding to BLU_MUX1 is scanned in T2-1, the display partition corresponding to BLU_MUX2 is scanned in T2-2, and so on.

[0049] During the second time period, the plurality of backlight zones are sequentially illuminated. This second time period includes a second target time period corresponding to the target backlight zone among the plurality of backlight zones. The time interval between the first target time period and the second target time period is not less than the liquid crystal response time. That is, the illumination time of the target backlight zone is calculated under the condition of ensuring sufficient liquid crystal response time, avoiding overlap between the target backlight zone illumination time and the liquid crystal response time, thus preventing ghosting and achieving the effect of both eliminating ghosting and ensuring the display refresh rate.

[0050] In some embodiments, two adjacent frames include a first frame and a second frame in chronological order, and the second time period corresponding to the first frame partially overlaps with the first time period corresponding to the second frame.

[0051] In some embodiments, two adjacent frames include a first frame and a second frame in chronological order, and the second target time period of the first frame does not overlap with the first target time period of the second frame.

[0052] Figure 1D A timing diagram of an abnormal display backlight module according to an embodiment of the present disclosure is shown.

[0053] Because each MUX controls a fixed number of LED rows, the backlight illumination time of the backlight zone corresponding to the MUX in the previous frame (i.e., the first frame) cannot coincide with the scan time of the display zone corresponding to the same MUX in the next frame (i.e., the second frame). Otherwise, it will lead to display errors and abnormal display. Figure 1D As shown, MUX1 displays normally, while MUX2, MUX3, MUX4, MUX5, MUX6, MUX7, and MUX8 all exhibit abnormal display issues.

[0054] Figure 1E A timing diagram of a backlight module in normal display according to an embodiment of the present disclosure is shown.

[0055] To avoid display errors, the second time period corresponding to the first frame partially overlaps with the first time period corresponding to the second frame, such as... Figure 1EAs shown, the lighting times corresponding to BLU_MUX4 to BLU_MUX8 in the first frame partially overlap with the corresponding scanning times in the second frame. However, the lighting times corresponding to BLU_MUX1 to BLU_MUX8 in the first frame (i.e., the second time period) do not overlap with the scanning times corresponding to BLU_MUX1 to BLU_MUX8 in the second frame (i.e., the first time period). Specifically, the lighting time corresponding to BLU_MUX1 does not overlap with the scanning time corresponding to BLU_MUX1, and the lighting time corresponding to BLU_MUX2 does not overlap with the scanning time corresponding to BLU_MUX2.

[0056] In some embodiments, the first time period is determined based on the vertical resolution of the display device, and the second time period is determined based on the refresh rate of the display device, the first time period, and the liquid crystal response time.

[0057] Specifically, the order information corresponding to each backlight zone is determined, wherein the order information is the order of the 8 MUX switches, and the target coefficient corresponding to the target backlight zone is determined based on the order information corresponding to the target backlight zone.

[0058] For example, such as Figure 1E In the target coefficients, MUX1 corresponds to 1, MUX2 corresponds to 2, MUX3 corresponds to 3, MUX4 corresponds to 4, MUX5 corresponds to 5, MUX6 corresponds to 6, MUX7 corresponds to 7, and MUX8 corresponds to 8.

[0059] The vertical resolution of the display device and a preset unit scan time are obtained, wherein the unit scan time is the time corresponding to scanning one line. Based on the unit scan time, the vertical resolution, the target coefficient, and the number of backlight zones, the scan time of the target display zone corresponding to the target backlight zone is determined.

[0060] The refresh rate of the display device is obtained, which refers to the number of times the screen is refreshed per second. The higher the refresh rate, the better the stability of the displayed image, that is, the smoother and clearer the displayed image.

[0061] Based on the frame time, the scan time, and the liquid crystal response time ( Figure 1C In T5), the second time period corresponding to the target backlight partition is determined. Figure 1CIn the second time period (T4), the target backlight partition is illuminated within the illumination time. The illumination time of the target backlight partition is calculated under the condition of ensuring sufficient liquid crystal response time, so as to avoid the overlap between the illumination time of the target backlight partition and the liquid crystal response time, thus avoiding the generation of ghosting phenomenon. This achieves the effect of not generating ghosting phenomenon while ensuring the display refresh rate.

[0062] In some embodiments, the vertical resolution is greater than or equal to 2000; for example, the resolution is 2304×2304. The refresh rate is greater than or equal to 120Hz; for example, the refresh rate can be 120Hz or 144Hz.

[0063] In some embodiments, sequentially scanning the plurality of display partitions within a first time period further includes: scanning the target display partition within the first target time period. Sequentially illuminating the plurality of backlight partitions within a second time period further includes: starting to illuminate the target backlight partition after the illumination start time point within the second target time period, wherein the illumination start time point is the earliest time point after the frame time start time point, passing through the first target time period and the liquid crystal response time.

[0064] Specifically, the second target time period, i.e., the illumination time of the target backlight zone, is determined by the illumination start time. The process for determining the illumination start time is as follows:

[0065] The frame time is subtracted from the scan time and the liquid crystal response time to obtain the lighting start time point corresponding to the target backlight partition. The lighting start time point is the earliest time point at which the target backlight partition can be lit. That is, the target backlight partition cannot be lit earlier than the time corresponding to the lighting start time point to avoid overlapping with the liquid crystal response time and causing ghosting.

[0066] In some embodiments, sequentially illuminating the plurality of backlight zones during the second time period further includes: continuously illuminating the target backlight zone during the duration of the second target time period.

[0067] The total duration of the second time period is the product of the total frame time and the duty cycle of the pulse width modulation signal corresponding to the target backlight partition. The ratio of the total duration to the number of partitions of the multiple backlight partitions is the duration of the second target time period.

[0068] In some embodiments, the duration of the second target time period is determined based on the duty cycle of the pulse width modulation signal corresponding to the target backlight partition, the frame time, and the number of partitions of the plurality of backlight partitions.

[0069] Specifically, the initial lighting duration of the target backlight zone is determined. Based on the frame time and the initial lighting duration, the lighting end time point corresponding to the target backlight zone is determined. The lighting end time point is the time point at which the target backlight zone stops lighting. That is, the lighting end time point is the latest time point at which the target backlight zone can be lit. In other words, the lighting stop time cannot be later than the time corresponding to the lighting end time point to avoid abnormal display problems.

[0070] Specifically, such as Figure 1E As shown, BLU_MUX1 is high when the backlight is on and low when the backlight is off. The duty cycle of the pulse width modulation signal for the target backlight zone is obtained; the duty cycle represents the proportion of time corresponding to the high level to the total time. The duty cycle and the frame time are multiplied to calculate the total illumination duration of the backlight module, which is the sum of the illumination durations of all backlight zones included in the backlight module.

[0071] The ratio of the total illumination duration to the number of backlight zones is calculated to obtain the duration of the second target time period, which is the initial illumination duration of each backlight zone.

[0072] For example, with a duty cycle of 22.5% and a frame time of 8.33ms, the total lighting duration is calculated to be 1.87ms. The number of backlight zones is 8, and the initial lighting duration of each backlight zone is 1 / 8*1.87, which is 0.234ms.

[0073] In some embodiments, the illumination duration corresponding to the target backlight partition is determined based on the target coefficient and the initial illumination duration, and the illumination end time point corresponding to the target backlight partition is determined based on the frame time and the illumination duration.

[0074] Specifically, the illumination duration corresponding to the target backlight partition is determined based on the target coefficient and the initial illumination duration. Further, the illumination duration corresponding to the target backlight partition is the product of the difference between the target coefficient and 1, and the initial illumination duration. The frame time and the illumination duration are summed to obtain the illumination end time point corresponding to the target backlight partition.

[0075] For example, such as Figure 1EIn the embodiment, the MUX1 is a first-order MUX switch, and there is no other MUX before the MUX1, so the lighting duration corresponding to the MUX1 is 0. The MUX2 is turned on after the MUX1 is turned on, so the lighting duration corresponding to the MUX2 is (2-1)*initial lighting duration. The MUX3 is turned on after the MUX1 and the MUX2 are turned on, so the lighting duration corresponding to the MUX3 is (3-1)*initial lighting duration.

[0076] In the embodiment, the lighting end time point is delayed to the time corresponding to the second frame from the second-order MUX switch, so as to avoid the situation that all the MUX switches are turned on in the same frame time, and the actual response time of the liquid crystal is insufficient. In the embodiment, the high refresh rate is ensured, and the situation that the response time of the liquid crystal coincides with the lighting time of the backlight and causes the ghosting phenomenon is avoided.

[0077] In some embodiments, the frame time is a ratio of a unit time to the refresh rate of the display device.

[0078] Specifically, the frame time of the display device is determined according to the refresh rate, that is, the time (T1 in the formula) corresponding to one frame of picture refresh of the display device. Figure 1C For example, if the refresh rate is 120 Hz, the frame time is 1s / 120=8.33 ms.

[0079] It should be noted that the method of the embodiment of the disclosure can be executed by a single device, such as a computer or a server. The method of the embodiment can also be applied to a distributed scenario, and completed by multiple devices cooperating with each other. In the distributed scenario, one of the multiple devices can only execute one or more steps in the method of the embodiment of the disclosure, and the multiple devices can interact with each other to complete the method.

[0080] It should be noted that some embodiments of the disclosure are described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in a different order than the order described above and still achieve desirable results. In addition, the processes depicted in the figures do not necessarily require the particular order shown, or sequential order, to achieve the desired results. In some implementations, multitasking and parallel processing can be advantageous.

[0081] Based on the same inventive concept, another embodiment of the disclosure provides a display device, as shown in Figure 2A Figure 2A FIG. 1 shows a schematic diagram of an exemplary display device 100 provided by the embodiment of the disclosure.

[0082] As shown in FIG. 1, the display device 100 includes a backlight 110, a liquid crystal panel 120, a display driver 130, and a backlight driver 140.​Figure 2A As shown, the display device 100 can include a liquid crystal display panel 102, a backlight module 104, and a control unit 106. The liquid crystal display panel 102 includes a plurality of display partitions, the backlight module 104 is disposed at the backlight side of the liquid crystal display panel 102, and the backlight module 104 includes a plurality of backlight partitions corresponding to the display partitions one-to-one and configured to provide backlight for the display partitions. The control unit 106 is electrically coupled to the liquid crystal display panel 102 and the backlight module 104, respectively.

[0083] The display device 100 can be a display device 100 employing a local dimming technology. Further, the liquid crystal display panel 102 of the display device 100 employing the local dimming technology can be divided into a plurality of display partitions, and correspondingly, the backlight module 104 can be divided into a plurality of backlight partitions, and the display partitions and the backlight partitions correspond one-to-one.

[0084] The control unit 106 can determine the gray scale corresponding to each display partition and the brightness of the backlight partition corresponding to the display partition of each display partition according to the RGB data signal, and provide driving signals to each display partition and each backlight partition accordingly, so as to realize independent dimming of each partition and further realize high-contrast display. The backlight module 104 can employ a direct type backlight structure and can include a plurality of light emitting units (e.g., light emitting diodes, sub-millimeter light emitting diodes, micron light emitting diodes, etc.) arranged in an array, and each backlight partition can include at least one light emitting unit, so as to realize independent dimming of each backlight partition.

[0085] In some embodiments, the backlight module 104 includes light emitting units arranged in an array, and each backlight partition includes a plurality of light emitting units.

[0086] The backlight module 104 can include a plurality of light emitting units arranged in an array, which can be light emitting devices such as LEDs, miniLEDs, microLEDs, etc. In some embodiments, the light emitting units can be driven individually, that is, each light emitting unit corresponds to an independent driving signal. In other embodiments, the backlight module 104 can be divided into a plurality of backlight partitions, and each backlight partition includes a plurality of light emitting units.

[0087] Based on the partition mode of the backlight module 104, correspondingly, the display area of the liquid crystal display panel 102 can be divided into a plurality of display partitions. Each display partition can include a plurality of pixel points, and each pixel point can have a corresponding gray scale value in a frame of display picture, which is represented in the display data for driving the liquid crystal display panel 102. The display partitions and the backlight partitions correspond one-to-one, that is, the backlight partitions are used to provide backlight for the display partitions corresponding thereto.

[0088] Figure 2B Another schematic diagram of an example display device 100 is shown.

[0089] As shown in Figure 2B the display device 100 can include a liquid crystal display panel 102, a backlight module 104, and a control unit 106. The control unit 106 can further include one or more processors 1062, a memory 1064, an input / output interface 1066, a communication interface 1068, and a bus 1070. The processor 1062, the memory 1064, the input / output interface 1066, and the communication interface 1068 are communicatively connected to each other via the bus 1070.

[0090] The processor 1062 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits, etc., for executing related programs to implement the technical solutions provided by the embodiments of the present disclosure.

[0091] In some embodiments, the processor 1062 can include other processing modules for processing data in the display device 100, for example, a TCON (Timing Control Board). The TCON (not shown in the figure) can process LVDS image data input signals (which can include RGB data signals, clock signals, and control signals) and convert them into LVDS signals capable of driving the liquid crystal display panel 102, and then send the LVDS signals to the LVDS receiving chip of the liquid crystal display panel 102 to drive the liquid crystal display panel 102 based on the LVDS signals. Figure 2B

[0092] In some embodiments, the TCON can also provide driving signals for the backlight module 104 to control the backlight module 104 to be lit, thereby providing backlight for the liquid crystal display panel 102. The memory 1064 can be implemented by a ROM (Read Only Memory), a RAM (Random Access Memory), a static storage device, a dynamic storage device, etc. The memory 1064 can store an operating system and other application programs, and when the technical solutions provided by the embodiments of the present disclosure are implemented by software or firmware, the related program codes are stored in the memory 108 and are called and executed by the processor 1062.

[0093] ​The input / output interface 1066 is configured to connect an input / output module to realize information input and output. For example, the input / output interface 1066 can be electrically coupled with the liquid crystal display panel 102 and the backlight module 104 respectively to output the control instructions generated by the processor 1062 to the liquid crystal display panel 102 and the backlight module 104 correspondingly, so as to control the liquid crystal display panel 102 to display display data and control the backlight module 104 to light. The input / output module can be configured in the device (not shown in the figure) or externally connected to the device to provide corresponding functions. The input device can include a keyboard, a mouse, a touch screen, a microphone, various sensors and the like, and the output device can include a speaker, a vibrator, an indicator and the like.

[0094] The communication interface 1068 is configured to connect a communication module (not shown in the figure) to realize the communication interaction between the display device 100 and other devices. The communication module can realize communication through a wired manner (for example, a USB, a network cable and the like) or a wireless manner (for example, a mobile network, WIFI, Bluetooth and the like).

[0095] The bus 1070 includes a channel to transmit information between various components (for example, the processor 1062, the memory 1064, the input / output interface 1066 and the communication interface 1068) of the display device 100.

[0096] It should be noted that although the above display device 100 only shows the liquid crystal display panel 102, the backlight module 104 and the control unit 106, in the specific implementation process, the display device 100 can also include other components necessary for normal operation. In addition, those skilled in the art can understand that the display device 100 described above can also only include components necessary for the implementation of the embodiments of the present disclosure, and does not necessarily include all the components shown in the above display device 100. Figure 2B

[0097] Figure 2C A partitioned schematic diagram of a Mini LED backlight is shown.

[0098] As shown in Figure 2C , the number of partitions is 24x24, Figure 2C The dark gray part (such as 1 in Figure 2C ) indicates that there is no LED at the corner, and the white part (such as 2 in Figure 2C ) indicates that the light remains off.

[0099] Figure 2D A schematic diagram of circuit connection in the backlight partition is shown, and the Mini LED backlight controls the opening and closing of the light through the LED Driver IC. Taking 8 MUX switches and 72 channels as an example. ​

[0100] MUX1 controls the turning on and off of the lamps of the first to third rows, MUX2 controls the turning on and off of the lamps of the fourth to sixth rows, MUX3 controls the turning on and off of the lamps of the seventh to ninth rows, MUX4 controls the turning on and off of the lamps of the tenth to twelfth rows, MUX5 controls the turning on and off of the lamps of the thirteenth to fifteenth rows, MUX6 controls the turning on and off of the lamps of the sixteenth to eighteenth rows, MUX7 controls the turning on and off of the lamps of the nineteenth to twenty-first rows, and MUX8 controls the turning on and off of the lamps of the twenty-second to twenty-fourth rows.

[0101] Figure 2E A turned-on Mini LED backlight schematic diagram is shown.

[0102] As shown in Figure 2E , when MUX1 is charging, all the lamps controlled by MUX1 are turned on, that is, all the lamps of the first to third rows are turned on, Figure 2E The light gray part (such as 1 in Figure 2E ) indicates that the lamp is turned on, the dark gray part (such as 2 in Figure 2E ) indicates that the cut corner has no LED, and the white part (such as 3 in Figure 2E ) indicates that the lamp remains off.

[0103] In some embodiments, the display device 100 is a virtual reality device, that is, a VR device.

[0104] The display device 100 of the above embodiments can be used to implement the corresponding method in any of the above embodiments, and therefore the method embodiments have the beneficial effects of the corresponding device embodiments, which will not be described here.

[0105] Based on the same inventive concept, the present disclosure also provides an electronic device corresponding to the method of any of the above embodiments, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the driving method of the display device of any one of the above embodiments when executing the program.

[0106] Figure 3 A more specific hardware structure schematic diagram of an electronic device is shown, which can include a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040 are connected to each other through the bus 1050 for communication within the device.

[0107] The processor 1010 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits, etc., for executing relevant programs to implement the technical solutions provided by the embodiments of the present specification.

[0108] The memory 1020 can be implemented by a ROM (Read Only Memory), a RAM (Random Access Memory), a static storage device, a dynamic storage device, etc. The memory 1020 can store an operating system and other application programs, and when the technical solutions provided by the embodiments of the present specification are implemented by software or firmware, the relevant program codes are stored in the memory 1020 and called and executed by the processor 1010.

[0109] The input / output interface 1030 is configured to connect input / output modules to implement information input and output. The input / output modules can be configured as components in the device (not shown in the figure) or externally connected to the device to provide corresponding functions. The input devices can include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output devices can include a display, a speaker, a vibrator, an indicator light, etc.

[0110] The communication interface 1040 is configured to connect a communication module (not shown in the figure) to implement the communication interaction between the device and other devices. The communication module can realize communication through a wired manner (such as USB, network cable, etc.) or through a wireless manner (such as mobile network, WIFI, Bluetooth, etc.).

[0111] The bus 1050 includes a channel for transmitting information between various components (such as the processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040) of the device.

[0112] It should be noted that although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040, and the bus 1050, in the specific implementation process, the device can also include other components necessary for normal operation. In addition, those skilled in the art can understand that the above device can also only include the components necessary to implement the solutions of the embodiments of the present specification, and does not have to include all the components shown in the figure.

[0113] The electronic device of the above embodiment is used to implement the driving method of the display device in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0114] Based on the same inventive concept, the disclosure also provides a non-transitory computer-readable storage medium storing computer instructions for causing the computer to perform the driving method of the display device according to any of the above embodiments.

[0115] The computer-readable medium of the above embodiment includes permanent and non-permanent, removable and non-removable media, which can be implemented by any method or technology to store information. The information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information accessible by a computing device.

[0116] The storage medium of the above embodiment stores computer instructions for causing the computer to perform the driving method of the display device according to any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0117] Based on the same inventive concept, the disclosure also provides a vehicle including the in-vehicle voice interaction device of the above embodiment, the electronic device of the above embodiment, and the computer-readable storage medium of the above embodiment, and the vehicle device implements the driving method of the display device according to any of the above embodiments.

[0118] The vehicle of the above embodiment is used to implement the driving method of the display device according to any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0119] Those of ordinary skill in the art will realize that the foregoing discussion of any of the embodiments has been presented for the purpose of illustration and description and is not intended to be exhaustive or to limit the disclosure to the precise forms described, and that various alternatives, modifications, and variations can be employed without departing from the spirit or scope of the disclosure as set forth in the claims. Examples of such alternate, modified, and varying embodiments have been discussed above in conjunction with the material discussed above.

[0120] In addition, to simplify the description and discussion, and so as not to make the embodiments of the disclosure difficult to understand, the well-known power / ground connections to integrated circuit (IC) chips and other components can or can not be shown in the provided drawings. Further, devices can be shown in block diagram form in order to avoid making the embodiments of the disclosure difficult to understand, and this also takes into account the fact that details regarding implementation of these block diagram devices are highly dependent on the platform to which the embodiments of the disclosure are to be implemented (i.e., these details should be well within the understanding of one of ordinary skill in the art). Where specific details (e.g., circuitry) are set forth in order to describe an illustrative embodiment of the disclosure, it should be apparent to one of ordinary skill in the art that the embodiments of the disclosure can be practiced without or with variation of these specific details. Thus, these descriptions should not be construed as limiting, but merely as descriptive of illustrative embodiments of the disclosure.

[0121] While the disclosure has been described in connection with specific embodiments thereof, it will be understood that many modifications, variations and alternatives will be apparent to those skilled in the art as a result of the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) can use the embodiments discussed.

[0122] The embodiments of the disclosure are intended to cover all such alternatives, modifications, and variations as falling within the broad scope of the appended claims. Accordingly, any one of the steps of the embodiments of the disclosure can be performed in any order, and many of the steps can be performed in any order or in parallel, unless otherwise specified.

Claims

1. A driving method for a display device, characterized in that, The display device includes a liquid crystal display panel and a backlight module. The liquid crystal display panel includes multiple display zones, and the backlight module includes multiple backlight zones. The multiple display zones correspond one-to-one with the multiple backlight zones. The method includes: During the first time period, the plurality of display partitions are scanned sequentially; During the second time period, the multiple backlight zones are lit up sequentially; Wherein, the first time period includes a first target time period corresponding to the target display partition among the plurality of display partitions, and the second time period includes a second target time period corresponding to the target backlight partition among the plurality of backlight partitions, wherein the target display partition corresponds to the target backlight partition; The time interval between the first target time period and the second target time period is not less than the liquid crystal response time.

2. The method according to claim 1, characterized in that, Two adjacent frames, in chronological order, include a first frame and a second frame, and the second time period corresponding to the first frame partially overlaps with the first time period corresponding to the second frame.

3. The method according to claim 1, characterized in that, Two adjacent frames, in chronological order, include a first frame and a second frame, and the second target time period of the first frame does not overlap with the first target time period of the second frame.

4. The method according to claim 1, characterized in that, The first time period is determined based on the vertical resolution of the display device, and the second time period is determined based on the refresh rate of the display device, the first time period, and the liquid crystal response time.

5. The method according to claim 4, characterized in that, The vertical resolution is greater than or equal to 2000, and the refresh rate is greater than or equal to 120Hz.

6. The method according to claim 4, characterized in that, The step of sequentially scanning the plurality of display partitions within the first time period further includes: scanning the target display partition within the first target time period; The step of sequentially illuminating the plurality of backlight zones during the second time period further includes: illuminating the target backlight zone after the illumination start time point within the second target time period, wherein the illumination start time point is the earliest time point after the frame time start time point passes through the first target time period and the liquid crystal response time.

7. The method according to claim 4, characterized in that, The step of sequentially illuminating the plurality of backlight zones during the second time period further includes: continuously illuminating the target backlight zone during the duration of the second target time period. The total duration of the second time period is the product of the total frame time and the duty cycle of the pulse width modulation signal corresponding to the target backlight partition. The ratio of the total duration to the number of partitions of the multiple backlight partitions is the duration of the second target time period.

8. The method according to claim 6 or 7, characterized in that, The frame time is the ratio of unit time to the refresh rate of the display device.

9. A display device, characterized in that, include: The liquid crystal display panel includes multiple display zones; A backlight module is disposed on the backlight side of the liquid crystal display panel and includes multiple backlight zones, wherein each backlight zone corresponds to a display zone and is configured to provide backlight for the display zone. The control unit is electrically coupled to the liquid crystal display panel and the backlight module, respectively, and is configured to perform the method described in any one of claims 1-8.

10. The display device according to claim 9, characterized in that, The backlight module includes an array of light-emitting units, and each backlight zone includes multiple light-emitting units.

11. The display device according to claim 9, characterized in that, The display device is a virtual reality device.

12. An electronic device, characterized in that, It includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the program, implements the method as described in claims 1-8.

13. A non-transitory computer-readable storage medium, characterized in that, The non-transitory computer-readable storage medium stores computer instructions for causing a computer to perform the method described in claims 1-8.

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