Display control method and display apparatus

Abstract

Disclosed in the present application are a display control method and a display apparatus. The method comprises: under the control of a first synchronization signal, driving pixel unit rows on a display panel in a preset sequence; and under the control of a second synchronization signal, on the basis of local dimming data and the way in which backlight units are arranged on a backlight panel, controlling a target backlight partition row to emit backlight, wherein the trigger moment of the second synchronization signal is not earlier than the trigger moment of the first synchronization signal. By means of additionally configuring a synchronization signal during backlight control, and defining the timing for triggering two synchronization signals, the driving of pixel unit rows is almost synchronized with the emission of backlight of a target backlight partition row, and backlight partitions in the target backlight partition row are not affected by the different backlight units to which the backlight partitions belong, thereby improving the display performance of a display apparatus.

Description

A display control method and display device

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411927486.3, filed on December 25, 2024, entitled "A Display Control Method and Display Device", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of display technology, and in particular to a display control method and display device. Background Technology

[0004] In recent years, with the rapid development of image display technology, display devices have gradually moved towards larger sizes and higher performance to provide users with a better visual experience. In larger display devices, to match the larger display panel, the backlight panel is usually composed of multiple backlight units (BLUs) pieced together; furthermore, to ensure display quality...

[0005] The image displayed on the panel has good color contrast, and local dimming (LD) technology is usually used for backlight control on the backlight panel.

[0006] However, in the aforementioned large-scale display devices, when using local dimming technology to control multiple BLUs in the backlight panel, there is a significant time difference between the backlight illumination of multiple BLUs and the pixel display on the display panel. This results in a deterioration in the image display effect of the display device and seriously affects its display performance. Summary of the Invention

[0007] This application provides a display control method and display device to solve the problem of reduced display performance in existing multi-BLU display devices, which is caused by the need to control multiple BLUs and the asynchronous backlighting of multiple BLUs with the image display on the display panel.

[0008] In a first aspect, embodiments of this application provide a display control method, including:

[0009] Under the control of the first synchronization signal, the pixel unit rows on the display panel are driven according to the first display data and in a preset order, wherein the first display data is the display data corresponding to the first image frame;

[0010] Under the control of the second synchronization signal, the target backlight zone row on the backlight panel is controlled to turn on the backlight according to the local dimming data and the arrangement of the backlight units on the backlight panel.

[0011] The triggering time of the second synchronization signal is no earlier than the triggering time of the first synchronization signal.

[0012] The display control method provided in this application embodiment, under the control of the second synchronization signal, causes the target backlight partition row on the backlight panel to light up row by row in the driving order of the pixel unit row on the display panel. By setting the trigger time of the second synchronization signal to be no earlier than the trigger time of the first synchronization signal, the driving display of the pixel unit row is almost synchronized with the backlight lighting of its corresponding target backlight partition row. The backlight partitions in the target backlight partition row are not affected by the different backlight units to which they belong, thereby improving the display performance of the multi-backlight partition BLU display device.

[0013] In an optional embodiment, if the local dimming data is generated based on the first display data, the time difference between the triggering time of the second synchronization signal and the triggering time of the first synchronization signal is determined based on the generation delay of the local dimming data.

[0014] In one alternative embodiment, the local dimming data is generated in the following manner:

[0015] Based on the first display data and in accordance with the preset order, local dimming data corresponding to the target backlight partition row is generated sequentially.

[0016] The start time of the local dimming data generation is consistent with the trigger time of the first synchronization signal, and the end time of the local dimming data generation is consistent with the trigger time of the second synchronization signal.

[0017] In the above method, the local dimming data used to control the backlight brightness can be generated from the first display data of the first image frame. At this time, the time difference between the triggering time of the first synchronization signal used to control the display panel and the triggering time of the second synchronization signal used to control the backlight panel is the generation delay of the local dimming data. Since this generation delay is unavoidable in the display process, in this embodiment, by shortening the time difference between the driving display timing of the pixel unit row in the display panel and the backlight lighting timing of its corresponding target backlight partition row to be consistent with the generation delay, the maximum synchronization between the driving display of the pixel unit row and the backlight lighting of its corresponding target backlight partition row can be guaranteed, thereby improving the image display effect of the display device and enhancing the display performance of the display device.

[0018] In an optional embodiment, if the local dimming data is generated based on the second display data, the time difference between the triggering time of the second synchronization signal and the triggering time of the first synchronization signal is determined based on the backlight illumination delay of the dimmer.

[0019] Wherein, the second display data is display data corresponding to the second image frame, the second image frame is located before the first image frame, and the backlight partition includes the dimmer and the light-emitting unit electrically connected to the dimmer.

[0020] In one alternative embodiment, the local dimming data is generated in the following manner:

[0021] For any backlight unit on the backlight panel, local dimming data corresponding to each backlight partition row in the backlight unit is generated sequentially according to the second display data and the preset order.

[0022] The end time of the generation of the local dimming data is consistent with the trigger time of the first synchronization signal.

[0023] The aforementioned method utilizes local dimming data for controlling backlight brightness, generated from second display data of a second image frame. Since the second image frame precedes the first image frame, this local dimming data can be acquired by the backlight panel at the trigger moment of the first synchronization signal. In this case, the time difference between the trigger moment of the first synchronization signal for controlling the display panel and the trigger moment of the second synchronization signal for controlling the backlight panel is the backlight illumination delay of the dimmer in the backlight panel. Because this backlight illumination delay is necessary for the dimmer to process the local dimming data, by shortening the time difference between the driving display timing of the pixel unit row in the display panel and the backlight illumination timing of its corresponding target backlight partition row to match this backlight illumination delay, maximum synchronization between the driving display of the pixel unit row and the backlight illumination of its corresponding target backlight partition row can be ensured, thereby improving the image display effect and enhancing the display performance of the display device.

[0024] In one alternative embodiment, the target backlight partition row is composed of a plurality of backlight partitions corresponding to the driven pixel unit row, and each backlight partition in the target backlight partition row belongs to at least one of the backlight units.

[0025] The step of controlling the target backlight zone row on the backlight panel to turn on the backlight based on local dimming data and the arrangement of the backlight units on the backlight panel includes:

[0026] Based on the arrangement of the backlight units on the backlight panel, a target backlight unit is determined among the multiple backlight units provided on the backlight panel, wherein the backlight partitions included in the target backlight partition row belong to the target backlight unit.

[0027] Based on the local dimming data corresponding to the target backlight partition row, control each backlight partition in the target backlight unit that belongs to the target backlight partition row to turn on the backlight.

[0028] The above method determines a target backlight unit among the multiple backlight units based on their arrangement on the backlight panel. This target backlight unit can be one or more. The determined target backlight unit is then used to form a target backlight partition row, which consists of multiple backlight partitions corresponding to the currently driven pixel unit row. In this way, when performing backlight control, each backlight partition in the target backlight partition row will be controlled to turn on its backlight simultaneously, thereby avoiding the influence of different backlight units on the backlight partitions in the target backlight partition row and improving the display performance of multi-BLU display devices.

[0029] In one optional embodiment, the backlight units are arranged on the backlight panel in any one of the following ways: arranged along the row direction, arranged along the column direction, or arranged in an array.

[0030] If the multiple backlight units on the backlight panel are arranged along a column direction, then the target backlight unit includes one.

[0031] If the multiple backlight units on the backlight panel are arranged in a row or in an array, then the target backlight unit includes multiple units.

[0032] The above method allows for various arrangements of multiple backlight units on the backlight panel, which can be flexibly configured according to actual business needs. By setting multiple backlight units on the backlight panel, high color contrast of large-scale display devices can be guaranteed, improving the user's visual experience.

[0033] Secondly, embodiments of this application provide a display device, including a display panel and a backlight panel. The display panel has a plurality of pixel unit rows, and the backlight panel has a plurality of backlight units, each backlight unit including a plurality of backlight zones, wherein:

[0034] The display panel is used to drive the pixel unit rows according to the first display data and in a preset order under the control of the first synchronization signal, wherein the first display data is display data corresponding to the first image frame;

[0035] The backlight panel is used to control the target backlight zone row to turn on the backlight under the control of the second synchronization signal, based on local dimming data and the arrangement of the backlight units on the backlight panel.

[0036] The triggering time of the second synchronization signal is no earlier than the triggering time of the first synchronization signal.

[0037] In an optional embodiment, the display device further includes a timing controller and a dimming controller, wherein:

[0038] The timing controller is connected to the display panel, and the dimming controller is connected to both the timing controller and the backlight panel. The backlight zone includes a dimmer and a light-emitting unit connected to the dimmer.

[0039] The timing controller is configured to generate the local dimming data based on the first display data, and transmit the local dimming data to the dimmer via the dimming controller.

[0040] Generate the first synchronization signal and send the first synchronization signal to the display panel;

[0041] The dimmer is used to generate the second synchronization signal, and under the control of the second synchronization signal, generate a backlight control signal according to the local dimming data and the arrangement of the backlight units on the backlight panel, so as to control the light-emitting units connected to the dimmer to turn on the backlight.

[0042] The time difference between the moment when the dimmer generates the second synchronization signal and the moment when the timing controller generates the first synchronization signal is determined based on the generation delay generated by the timing controller when generating the local dimming data.

[0043] In an optional embodiment, the timing controller is specifically used to: generate local dimming data corresponding to the target backlight partition row according to the first display data and in the preset order, and transmit the local dimming data to the dimmer in the target backlight partition row through the dimming controller, wherein the start time of the generation of the local dimming data is consistent with the time when the timing controller generates the first synchronization signal;

[0044] The dimmer is specifically used to generate the second synchronization signal at the end of the local dimming data generation.

[0045] In an optional embodiment, the display device further includes a timing controller and a dimming controller, wherein:

[0046] The timing controller is connected to the display panel, and the dimming controller is connected to both the timing controller and the backlight panel. The backlight zone includes a dimmer and a light-emitting unit connected to the dimmer.

[0047] The timing controller is configured to generate the local dimming data based on the second display data, and send the local dimming data to the dimmer via the dimming controller.

[0048] The first synchronization signal is generated and sent to the display panel, wherein the second display data is display data corresponding to the second image frame, and the second image frame is located before the first image frame;

[0049] The dimmer is used to generate the second synchronization signal, and under the control of the second synchronization signal, generate a backlight control signal according to the local dimming data and the arrangement of the backlight units on the backlight panel, so as to control the light-emitting units connected to the dimmer to turn on the backlight.

[0050] The time difference between the moment when the dimmer generates the second synchronization signal and the moment when the timing controller generates the first synchronization signal is determined based on the backlight illumination delay of the dimmer.

[0051] In an optional embodiment, the timing controller is specifically used to: for any backlight unit on the backlight panel, generate local dimming data corresponding to each backlight partition row in the backlight unit according to the second display data and in the preset order, and transmit the local dimming data to the dimmer in the target backlight partition row through the dimming controller;

[0052] The dimmer is specifically used to generate the second synchronization signal when the backlight illumination delay of the dimmer arrives;

[0053] The end time of the local dimming data generation is consistent with the time when the timing controller generates the first synchronization signal.

[0054] In one alternative embodiment, the target backlight partition row is composed of a plurality of backlight partitions corresponding to the driven pixel unit row, and the backlight partitions in the target backlight partition row belong to at least one of the backlight units.

[0055] The dimmer is specifically used to: generate the backlight control signal based on the local dimming data corresponding to the target backlight partition row, and send the backlight control signal to the light-emitting unit connected to the dimmer and belonging to the target backlight partition row;

[0056] The target backlight partition row includes backlight partitions belonging to target backlight units, which are determined from the plurality of backlight units according to the arrangement of the backlight units on the backlight panel.

[0057] In one optional embodiment, the backlight units are arranged on the backlight panel in any one of the following ways: arranged along the row direction, arranged along the column direction, or arranged in an array.

[0058] If the multiple backlight units on the backlight panel are arranged along a column direction, then the target backlight unit includes one.

[0059] If the multiple backlight units on the backlight panel are arranged in a row or in an array, then the target backlight unit includes multiple units.

[0060] For the technical effects that the display device disclosed in the second aspect above may achieve, please refer to the above description of the technical effects that may be achieved with respect to the first aspect or the various possible solutions in the first aspect, which will not be repeated here. Attached Figure Description

[0061] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0062] Figure 1 is a schematic diagram of a display device provided by related technologies;

[0063] Figure 2 is a schematic diagram of the structure of a display panel provided by related technologies;

[0064] Figure 3 is a schematic diagram of a backlight panel provided by related technologies;

[0065] Figure 4 is a schematic diagram of the principle of a global dimming technology provided by related technologies;

[0066] Figure 5 is a schematic diagram of the principle of a local dimming technology provided by related technologies;

[0067] Figure 6 is a schematic diagram illustrating the principle of local dimming technology applied to a large-scale display device provided by related technologies;

[0068] Figure 7 is a schematic diagram of the structure of a display device provided in an embodiment of this application;

[0069] Figure 8 is a schematic diagram showing the correspondence between backlight partitions and pixel partitions provided in an embodiment of this application;

[0070] Figure 9A is a schematic diagram of the arrangement of a backlight unit on a backlight panel according to an embodiment of this application;

[0071] Figure 9B is a schematic diagram of another arrangement of backlight units on the backlight panel provided in the embodiment of this application;

[0072] Figure 9C is a schematic diagram of another arrangement of backlight units on a backlight panel provided in an embodiment of this application;

[0073] Figure 10 is a schematic diagram of the workflow of a display control method for a display device provided in an embodiment of this application;

[0074] Figure 11 is a schematic diagram of the display timing of a display device provided in an embodiment of this application;

[0075] Figure 12 is a schematic diagram of the display timing of another display device provided in an embodiment of this application;

[0076] Figure 13 is a schematic diagram of the display timing of another display device provided in an embodiment of this application;

[0077] Figure 14 is a schematic diagram of the display timing of another display device provided in an embodiment of this application;

[0078] Figure 15 is a schematic diagram of the display timing of another display device provided in an embodiment of this application;

[0079] Figure 16 is a schematic diagram of the display timing of another display device provided in an embodiment of this application. Detailed Implementation

[0080] 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. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0081] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0082] With the rapid development of image display technology, display devices are gradually moving towards larger size and higher performance in order to bring users a better visual experience. Figure 1 shows a schematic diagram of the structure of a display device. As shown in Figure 1, the display device 100 typically includes a timing controller (TCON) 110, a dimming controller 120, a display panel 130, and a backlight panel 140. The timing controller 110 is connected to the dimming controller 120 and the display panel 130, and the dimming controller 120 is also connected to the backlight panel 140. The display panel 130 is arranged opposite to the backlight panel 140, and the display panel 130 is located on the light-emitting side of the backlight panel 140.

[0083] As shown in Figure 1, the backlight panel 140 is provided with a dimmer 141 and a light-emitting unit 142. The dimmer 141 is electrically connected to the cathode of the light-emitting unit 142, and the anode of the light-emitting unit 142 is electrically connected to the power supply terminal VDD.

[0084] In practical applications, the timing controller 110 generates local dimming data based on the display data corresponding to an image frame, and sends the local dimming data to the dimming controller 120, as well as the display data to the display panel 130. The dimming controller 120 sends the received local dimming data to the backlight panel 140. The dimmer 141 in the backlight panel 140 generates PWM (Pulse-Width Modulation) local dimming data based on the received local dimming data, and sends the PWM local dimming data to the light-emitting unit 142 connected to it to control the light-emitting unit 142 to light up, thereby providing corresponding backlight for the display panel 130. The display panel 130 can display the image frame based on the received display data and the backlight provided by the backlight panel 140.

[0085] Figure 2 shows a schematic diagram of a display panel structure. As shown in Figure 2, the display panel 130 is provided with a pixel array composed of liquid crystal molecules, a source driver IC 131, and a gate driver IC 132. The pixel array can be divided into multiple pixel unit rows 133, and a pixel unit row 133 includes multiple pixel units arranged along the row direction. The source driver IC 131 is connected to each pixel unit through data lines, and the gate driver IC 132 is connected to each pixel unit through scan lines.

[0086] In practical applications, the timing controller 110 controls the source driver chip 131 to write display data into the corresponding pixel unit through the data line, and controls the gate driver chip 132 to send timing drive signals to each pixel unit row 133 through the scan line to drive the corresponding pixel unit row 133. Based on the display data received by each pixel unit in the pixel unit row 133, the image is displayed.

[0087] It should be noted that during the timing-driven process, the driving order (i.e., the preset order in the embodiments of this application) can be performed in a top-to-bottom order for forward scanning, or forward scanning can be performed first and then reverse scanning.

[0088] Figure 3 shows a schematic diagram of a backlight panel structure. As shown in Figure 3, the backlight panel 140 is provided with multiple dimmers 141 and multiple light-emitting units 142. One dimmer 141 is connected to at least one light-emitting unit 142. For example, in the backlight panel structure shown in Figure 3, one dimmer 141 is connected to two light-emitting units 142. Of course, one dimmer can also be connected to one, four or even other numbers of light-emitting units, which can be flexibly set according to actual business needs.

[0089] In practical applications, the light-emitting units 142 on the backlight panel 140 can be arranged in an array, and the number of light-emitting units 142 can be set according to the size of the display panel 130. The dimmer 141 can also be arranged in an array depending on the distribution of the light-emitting units 142; the dimmer 141 is used to control the brightness of the light-emitting units 142 connected to it according to the received local dimming data, thereby realizing the adjustment of the backlight brightness provided by the backlight panel 140.

[0090] There are generally two ways to adjust the backlight brightness of the backlight panel 140:

[0091] One method is to use global dimming technology: as shown in Figure 4, during the display cycle of an image frame, each light-emitting unit (not shown in the figure) in the backlight panel 140 is always lit and has the same brightness, so as to provide backlight for the display panel 130, ensuring that the display panel 130 can display images normally, so that the human eye can see the displayed image frame.

[0092] Another method utilizes local dimming technology: As shown in Figure 5, the backlight panel 140 is divided into multiple backlight zones 143. Each backlight zone may include one or more dimmers and multiple light-emitting units connected to the dimmers. The backlight brightness of each backlight zone is independent of each other; that is, the different fills in each backlight zone 143 in Figure 5 represent different backlight brightness. Through this dimming method, the image displayed on the display panel 130 can have better color contrast, and the display effect of the image frame perceived by the human eye will be better.

[0093] In display devices using global dimming technology, since all light-emitting units in the backlight panel 140 are always lit, there is no need to consider the synchronization between the backlight illumination of the backlight panel 140 and the image display on the display panel 130. However, in display devices using local dimming technology, there is a certain time difference between the illumination of the backlight zones in the backlight panel 140 and the image display on the display panel 130, which can affect the performance of the display device.

[0094] Especially in large-scale display devices, to match the large display panel, the backlight panel is usually composed of multiple backlight units (BLUs). As shown in Figure 6, the backlight panel 140 is composed of four backlight units 140A. This display device also uses local dimming technology to control the backlight of the display panel. In the large-scale display device shown in Figure 6, since the backlight panel 140 is no longer composed of a single backlight unit but of multiple backlight units, when using local dimming technology to control the multiple backlight units in the backlight panel, there will be a significant time difference between the backlight illumination of the multiple backlight units and the pixel display on the display panel. This will lead to a deterioration in the image display effect of the display device and seriously affect the display performance of the display device.

[0095] Based on this, embodiments of this application provide a display control method and a display device to achieve synchronization between the display driving at the display panel end and the backlight illumination at the backlight panel end, thereby improving the image display effect of the display device and enhancing the display performance of the display device.

[0096] The objectives, functional features, and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0097] The display control method provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings:

[0098] The display control method provided in this application embodiment can be applied to large-scale display devices. Figure 7 shows a schematic diagram of the structure of a display device provided in this application embodiment. As shown in Figure 7, the display device 70 typically includes a timing controller 71, a dimming controller 72, a display panel 73, and a backlight panel 74. The timing controller 71 is connected to the dimming controller 72 and the display panel 73, respectively. The dimming controller 72 is also connected to the backlight panel 74. The display panel 73 is disposed opposite to the backlight panel 74, and the display panel 73 is located on the light-emitting side of the backlight panel 74.

[0099] The display panel 73 has an array of multiple pixel units; the backlight panel 74 has multiple backlight units 741, each backlight unit 741 is divided into multiple backlight partitions 742, and each backlight partition 742 includes at least one dimmer 743 and a light-emitting unit 744 connected to the dimmer 743; and each backlight partition 742 corresponds to a pixel partition 731 on the display panel 73, which can be composed of i×j pixel units on the display panel 73, that is, a pixel partition 731 can include i pixel units along the row direction and j pixel units along the column direction, where i and j are both positive integers.

[0100] Figure 8 shows a schematic diagram of the correspondence between backlight partitions and pixel partitions in a display device provided in an embodiment of this application. As shown in Figure 8, the backlight partitions 742 and 731 located in the same position correspond one-to-one. That is, the backlight partition 742 located at the upper right corner of the backlight panel 74, as indicated in Figure 8, corresponds to the pixel partition 731 located at the upper right corner of the display panel 73. The backlight provided by the backlight partition 742, as indicated in Figure 8, is used for the display of the pixel partition 731, as indicated in Figure 8.

[0101] In this embodiment of the application, the display panel 73 may be a liquid crystal panel (LCP); the light-emitting unit 744 may be a direct-lit AM mini-LED (Active Matrix Mini Light Emitting Diode).

[0102] It should be noted that the number of backlight units 741 provided on the backlight panel 74 can be flexibly set according to actual business needs, and is related to the actual size of the display panel 73. This application embodiment does not impose any restrictions on this.

[0103] The arrangement of the backlight units 741 on the backlight panel 74 in this embodiment will be described in detail below with reference to the accompanying drawings:

[0104] In some embodiments, a plurality of backlight units 741 may be arranged in a row direction on a backlight panel 74.

[0105] Taking a backlight panel 74 with two backlight units (BLU) 741 as an example, as shown in FIG9A, the two backlight units 741 are arranged along the row direction on the backlight panel 74. For the convenience of describing the following embodiments, the backlight unit 741 on the left in FIG9A is designated as BLU 11 and the backlight unit 741 on the right is designated as BLU 12.

[0106] In some embodiments, a plurality of backlight units 741 may be arranged along the column direction on the backlight panel 74.

[0107] Taking the example of two backlight units 741 set on the backlight panel 74, as shown in Figure 9B, the two backlight units 741 are arranged along the column direction on the backlight panel 74. For the convenience of describing the following embodiments, the upper backlight unit 741 in Figure 9B is designated as BLU 21 and the lower backlight unit 741 is designated as BLU 22.

[0108] In some embodiments, the multiple backlight units 741 may be arranged in an array on the backlight panel 74.

[0109] Taking a backlight panel 74 with four backlight units 741 as an example, as shown in Figure 9C, the four backlight units 741 are arranged in a 2×2 array on the backlight panel 74, that is, two backlight units 741 are arranged along the row direction and two backlight units 741 are arranged along the column direction. For ease of description of the following embodiments, the backlight unit 741 in the upper left corner of Figure 9C is designated as BLU 31, the backlight unit 741 in the upper right corner is designated as BLU 32, the backlight unit 741 in the lower left corner is designated as BLU 33, and the backlight unit 741 in the lower right corner is designated as BLU 34.

[0110] Of course, the above-mentioned arrangement methods are only representative examples. In practical applications, the backlight units 741 can be arranged on the backlight panel 74 in other ways according to specific business needs, and this application embodiment does not impose any restrictions on this. In addition, the number of backlight units 741 on the backlight panel 74 can also be flexibly set, and this application embodiment does not impose any restrictions on this either. By setting multiple backlight units on the backlight panel, high color contrast of large-scale display devices can be ensured, improving the user's visual experience.

[0111] Based on the display device structure shown in Figure 7, and as shown in Figure 10, the display control method provided in this application embodiment may include the following steps:

[0112] Step S1001: Under the control of the first synchronization signal, the pixel unit row 732 on the display panel 73 is driven according to the first display data and in a preset order, wherein the first display data is the display data corresponding to the first image frame.

[0113] In some embodiments, the pixel units on the display panel 73 are driven in rows. As shown in FIG7, one or more rows of pixel units on the display panel 73 form a pixel unit row 732. Taking the preset driving order from top to bottom as an example, in the process of driving the display of the first image frame, the first pixel unit row 732 is driven to display first, then the second pixel unit row 732 is driven to display, and so on, until the last pixel unit row 732 is driven, thus realizing the display of the first image frame.

[0114] Furthermore, at the beginning of the display cycle of the first image frame, the timing controller 71 generates a first synchronization signal and sends the first synchronization signal to the display panel 73 to inform the display panel 73 to start displaying the first image frame. At this time, the display panel 73 receives the first display data from the timing controller 71 through the data line and writes the first display data into the corresponding pixel unit. At the same time, it receives the timing drive signal through the scan line to drive each pixel unit row 732 one by one in a preset order.

[0115] It should be noted that the first synchronization signal in the embodiments of this application can be either the vertical synchronization signal LCD Vsync or the horizontal synchronization signal LCD Hsync, and this application does not impose any restrictions on this.

[0116] Figure 11 shows a timing control schematic diagram of a display device provided in an embodiment of this application. As shown in Figure 11, after the display panel 73 receives the first synchronization signal, it will drive each pixel unit row 732 to display the image in a preset order from top to bottom until the end.

[0117] It should be noted that the above embodiment, which uses a top-to-bottom preset order to drive the pixel unit rows, is merely an example and should not impose any limitations on the embodiments of this application. In practical applications, the display device can use any possible scanning order for driving.

[0118] In step S1002, under the control of the second synchronization signal, the target backlight partition row 745 on the backlight panel 74 is controlled to turn on the backlight according to the local dimming data and the arrangement of the backlight unit 741 on the backlight panel 74. The triggering time of the second synchronization signal is not earlier than the triggering time of the first synchronization signal.

[0119] As shown in Figure 7, the target backlight partition row 745 controlled to turn on the backlight in step S1002 is composed of multiple backlight partitions 742 corresponding to the driven pixel unit row 732, and the backlight partitions 742 in the target backlight partition row 745 belong to at least one backlight unit 741.

[0120] It should be noted that the second synchronization signal in the embodiments of this application can be either the vertical synchronization signal BLU Vsync or the horizontal synchronization signal BLU Hsync, and this application does not impose any restrictions on this.

[0121] In a specific implementation, as shown in Figure 11, while the display panel 73 is driven by progressive scanning under the control of the first synchronization signal, the dimmer 743 on the backlight panel 74 generates a second synchronization signal to indicate the start of providing backlight brightness for the display of the first image frame. At this time, since the display panel 73 drives pixel units in rows, the backlight panel 74 also lights up the backlight partitions 742 in rows accordingly. However, since the backlight panel 74 of this embodiment is provided with multiple backlight units 741, a row of backlight partitions 742 that are lit up at the same time (i.e., the target backlight partition row 745) may belong to different backlight units 741, which requires that multiple backlight units 741 can operate simultaneously.

[0122] The display control method provided in this application is applied to large-scale display devices, in which the backlight panel is composed of multiple backlight units. In this display control method, under the control of a second synchronization signal, the target backlight partition row on the backlight panel is illuminated row by row, following the driving sequence of the pixel unit rows on the display panel. The multiple backlight partitions included in the target backlight partition row can belong to one backlight unit or multiple backlight units, depending on the arrangement of the backlight units on the backlight panel. By setting the trigger time of the second synchronization signal to be no earlier than the trigger time of the first synchronization signal, the driving display of the pixel unit row is nearly synchronized with the backlight illumination of its corresponding target backlight partition row. The backlight partitions in the target backlight partition row are not affected by the different backlight units to which they belong, thereby improving the display performance of multi-BLU display devices.

[0123] The display control method in this application embodiment has two possible implementations, which will be described in detail below with reference to the accompanying drawings:

[0124] In some embodiments, the timing controller 71 can generate local dimming data based on the first display data corresponding to the first image frame. Specifically, the timing controller 71 generates local dimming data corresponding to the target backlight partition row 745 sequentially according to the first display data and in a preset order.

[0125] Referring to Figure 11, the backlight panel 74 includes backlight units BLU 11 and BLU 12 arranged along the row direction as an example: As shown in Figure 11, in both BLU 11 and BLU 12, the dimmers 743 are arranged in a 4×4 array. That is, for any BLU, there are 4 dimmers 743 arranged along the row direction and 4 dimmers 743 arranged along the column direction. Therefore, the backlight panel 74 consists of 4 rows of dimmers 743, with 8 dimmers 743 in each row, and each dimmer 743 is connected to 2 light-emitting units 744.

[0126] For the backlight panel 74, if each BLU is divided into 4×2 backlight zones 742, then the entire backlight panel 74 includes 4×4 backlight zones 742. Each backlight zone 742 includes two dimmers 743 arranged along the row direction and four light-emitting units 744 arranged in a 2×2 array. Therefore, the backlight panel 74 includes a total of 4 backlight zone rows, and each backlight zone row includes 4 backlight zones 742. Of these 4 backlight zones 742, two backlight zones 742 belong to BLU 11, and the other two backlight zones 742 belong to BLU 12.

[0127] For ease of description, the backlight panel 74 includes four backlight partition rows, defined from top to bottom as the first backlight partition row to the fourth backlight partition row. Therefore, the timing controller 71 generates local dimming data corresponding to the first backlight partition row based on the first display data, and sends this local dimming data to the dimmer 743 in the first backlight partition row through the dimming controller 72. Then, it generates local dimming data corresponding to the second backlight partition row, and sends this local dimming data to the dimmer 743 in the second backlight partition row through the dimming controller 72, and so on, until the end.

[0128] Since the timing controller 71 needs to generate local dimming data based on the first display data corresponding to the first image frame, and the process of generating local dimming data based on the first display data inevitably takes a period of time, this period is the local dimming data generation delay, which is unavoidable. Therefore, the following processing is performed in this embodiment:

[0129] In some embodiments, the timing controller 71 generates local dimming data based on the first display data simultaneously with the generation of the first synchronization signal. The dimmer 743 on the backlight panel 73 generates a second synchronization signal at the end of the local dimming data generation. Therefore, the time difference between the triggering time of the second synchronization signal and the triggering time of the first synchronization signal is equal to the generation delay of the local dimming data.

[0130] In a specific implementation, after the dimmer 743 generates the second synchronization signal, it indicates that backlighting for the image display of the first image frame has begun. Referring to Figure 11, when the display panel 73 drives the first pixel unit row on it to display an image, the time difference between the backlight activation time of the first backlight partition row (i.e., the target backlight partition row) corresponding to the first pixel unit row is the generation delay of the local dimming data.

[0131] In some embodiments, the dimmer 743 is specifically used to: generate a backlight control signal based on the local dimming data corresponding to the target backlight partition row 745, and send the backlight control signal to the light-emitting unit 744 connected to the dimmer 743 and belonging to the target backlight partition row 745; wherein the backlight partition 742 included in the target backlight partition row 745 belongs to the target backlight unit, and the target backlight unit is determined from a plurality of backlight units 741 according to the arrangement of the backlight units 741 on the backlight panel 74.

[0132] As shown in Figure 11, since the backlight units (BLUs) are arranged along the row direction on the backlight panel 74, both BLU 11 and BLU 12 are used as target backlight units. When the display panel 73 drives the display of pixel unit rows, the dimmers 743 in the backlight partitions 742 corresponding to the pixel unit rows in BLU 11 and BLU 12 simultaneously control the light-emitting units 744 connected to them to emit light. Furthermore, as the pixel unit rows on the display panel 73 are driven row by row, the backlight partition rows on the backlight panel 74 also light up row by row, thereby achieving near-synchronous driving of the pixel unit rows and backlight illumination of the target backlight partition rows, improving the display performance of the display device.

[0133] Figure 12 shows a timing control schematic diagram of a display device provided in another embodiment of this application. As shown in Figure 12, the backlight panel 74 includes backlight units BLU 21 and BLU 22 arranged along the column direction. In BLU 21 and BLU 22, dimmers 743 are arranged in a 2×8 array, that is, for any BLU, there are 8 dimmers 743 arranged along the row direction and 2 dimmers 743 arranged along the column direction. Therefore, the backlight panel 74 includes a total of 4 rows of dimmers 743, each row includes 8 dimmers 743, and each dimmer 743 is connected to 2 light-emitting units 744.

[0134] For the backlight panel 74, if each BLU is divided into 2×4 backlight zones 742, then the entire backlight panel 74 includes 4×4 backlight zones 742. Each backlight zone 742 includes two dimmers 743 arranged along the row direction and four light-emitting units 744 arranged in a 2×2 array. Therefore, the backlight panel 74 includes a total of 4 backlight zone rows. For ease of description, these 4 backlight zone rows are defined from top to bottom as the first backlight zone row to the fourth backlight zone row. For the first and second backlight zone rows, the 4 backlight zones 742 they include all belong to BLU 21; for the third and fourth backlight zone rows, the 4 backlight zones 742 they include all belong to BLU 22.

[0135] Referring to Figure 12, when the display panel 73 drives the display of the first pixel unit row, it is only necessary to use BLU 21 as the target backlight unit. Therefore, the dimmer 743 in the first backlight partition row (the first backlight partition row corresponds to the first pixel unit row) of BLU 21 will control the light-emitting unit 744 connected to it to emit light.

[0136] Referring to Figure 12, when driving the display of the last pixel unit row on the display panel 73, only BLU 22 needs to be used as the target backlight unit. Therefore, the dimmer 743 in the fourth backlight partition row of BLU 22 (the fourth backlight partition row corresponds to the last pixel unit row) will control the light-emitting unit 744 connected to it to emit light. The driving method for other backlight partition rows is similar, so it will not be described in detail here.

[0137] Figure 13 shows a timing control schematic diagram of a display device provided in another embodiment of this application. As shown in Figure 13, the backlight panel 74 includes backlight units BLU 31, BLU 32, BLU 33 and BLU 34 arranged in a 2×2 array. In BLU 31-BLU 34, dimmers 743 are arranged in a 2×4 array, that is, for any BLU, there are 4 dimmers 743 arranged along the row direction and 2 dimmers 743 arranged along the column direction. Therefore, the backlight panel 74 includes a total of 4 rows of dimmers 743, each row includes 8 dimmers 743, and each dimmer 743 is connected to 2 light-emitting units 744.

[0138] For the backlight panel 74, if each BLU is divided into 2×2 backlight zones 742, then the entire backlight panel 74 includes 4×4 backlight zones 742. Each backlight zone 742 includes two dimmers 743 arranged along the row direction and four light-emitting units 744 arranged in a 2×2 array. Therefore, the backlight panel 74 includes a total of 4 backlight zone rows. For ease of description, these 4 backlight zone rows are defined from top to bottom as the first backlight zone row to the fourth backlight zone row. For the first and second backlight zone rows, of the 4 backlight zones 742 they include, two backlight zones 742 belong to BLU 31, and the other two backlight zones 742 belong to BLU 33. For the third and fourth backlight zone rows, of the 4 backlight zones 742 they include, two backlight zones 742 belong to BLU 33, and the other two backlight zones 742 belong to BLU 34.

[0139] Referring to Figure 13, when the display panel 73 drives the display of the first pixel unit row, BLU 31 and BLU 32 are used as target backlight units. Therefore, the dimmers 743 in the backlight partitions 742 of BLU 31 and BLU 32 corresponding to the first pixel unit row will simultaneously control the light-emitting units 744 connected to them to emit light.

[0140] Referring to Figure 13, when driving the display of the last pixel unit row on the display panel 73, BLU 33 and BLU 34 need to be used as target backlight units. Therefore, the dimmers 743 in the backlight partitions 742 corresponding to the last pixel unit row in BLU 33 and BLU 34 will simultaneously control the light-emitting units 744 connected to them to emit light. The driving method for other backlight partition rows is similar, so it will not be described in detail here.

[0141] In the above embodiments, the local dimming data used to control the backlight brightness can be generated from the first display data of the first image frame. At this time, the time difference between the triggering time of the first synchronization signal used to control the display panel and the triggering time of the second synchronization signal used to control the backlight panel is the generation delay of the local dimming data. Since this generation delay is unavoidable in the display process, in this embodiment, by shortening the time difference between the driving display timing of the pixel unit row in the display panel and the backlight lighting timing of its corresponding target backlight partition row to be consistent with the generation delay, the maximum synchronization between the driving display of the pixel unit row and the backlight lighting of its corresponding target backlight partition row can be guaranteed.

[0142] Furthermore, based on the arrangement of multiple backlight units on the backlight panel, a target backlight unit is identified among the multiple backlight units. This target backlight unit can be one or more. During backlight control, multiple backlight zones corresponding to the currently driven pixel unit row within the target backlight unit are simultaneously activated. This prevents the backlight zones in the target backlight zone row from being affected by the different backlight units they belong to, thereby improving the display performance of multi-BLU display devices.

[0143] In some embodiments, the timing controller 71 can generate local dimming data based on the second display data corresponding to the second image frame, wherein the second image frame is located before the first image frame. Specifically, for any backlight unit 741 on the backlight panel 74, local dimming data corresponding to each backlight partition row in the backlight unit 741 is generated sequentially according to the second display data and in a preset order.

[0144] In specific implementations, the second image frame can be the image frame preceding the first image frame, or the image frame preceding the first image frame. Of course, the closer the second image frame is to the first image frame, the more accurate its backlight display effect. For example, in a scenario displaying continuous motion, the display effect of the motion is formed by the continuous display of multiple image frames. Assuming that the fifth image frame in this scenario is taken as the first image frame in this embodiment, the fourth image frame can be taken as the second image frame in this embodiment, and the local dimming data corresponding to the fifth image frame can be predicted and determined based on the display data corresponding to the fourth image frame.

[0145] Since local dimming data can be generated based on historical cached display data (i.e., second display data), the timing controller 71 can generate local dimming data within the display cycle of the image frame preceding the first image frame without occupying the display time of the first image frame. Therefore, there is no delay in the generation of local dimming data in this case.

[0146] For ease of explanation, the following embodiments will use the second image frame as the frame preceding the first image frame as an example:

[0147] Figure 14 shows a timing control schematic diagram of a display device provided in another embodiment of this application. Since the structure of the display device shown in Figure 14 is the same as that of the display device shown in Figure 11, it will not be described again. Please refer to the description of the structure of the display device shown in Figure 11 in the above embodiments.

[0148] As shown in Figure 14, the dimmers 743 belonging to the first backlight zone row in backlight units BLU 11 and BLU 12 first receive local dimming data, followed by the dimmers 743 belonging to the second backlight zone row in BLU 11 and BLU 12 receiving local dimming data, and so on, until the end. Therefore, in this case, as shown in Figure 14, there will also be a transmission delay from the dimming controller 72.

[0149] In the display control method shown in Figure 14, since the local dimming data used for backlight control can be determined based on the second display data corresponding to the second image frame, the generation of the local dimming data does not require occupying the display time of the first image frame. Thus, during the display of the first image frame, the time difference between the driving display of the pixel unit row and the backlight illumination of its corresponding target backlight partition row can be further shortened, reducing this time difference to be equal to the backlight illumination delay of the dimmer 743. Since this backlight illumination delay is inevitable during the process of the dimmer 743 generating the PWM local dimming data for controlling the light-emitting unit 744 based on the local dimming data, and this backlight illumination delay is very short, the above-described timing control method can achieve maximum synchronization between the driving display of the pixel unit row and the backlight illumination of its corresponding target backlight partition row, improving the image display effect of the display device and enhancing its display performance.

[0150] Figure 15 shows a timing control schematic diagram of a display device provided in another embodiment of this application. As shown in Figure 15, since the structure of the display device shown in Figure 15 is the same as that of the display device shown in Figure 12, it will not be described again. Please refer to the description of the structure of the display device shown in Figure 12 in the above embodiments.

[0151] As shown in Figure 15, firstly, the dimmers 743 belonging to the first backlight zone row in backlight unit BLU 21 and the dimmers 743 belonging to the third backlight zone row in backlight unit BLU 22 simultaneously receive local dimming data. Then, the dimmers 743 belonging to the second backlight zone row in BLU 21 and the dimmers 743 belonging to the fourth backlight zone row in BLU 22 simultaneously receive local dimming data. At this point, the local dimming data transmission is complete. Therefore, in this scenario, as shown in Figure 15, there will still be a transmission delay from the dimming controller 72.

[0152] In the display control method shown in Figure 15, since the local dimming data is determined based on the second display data corresponding to the second image frame, and the second display data is historical cache data, in the process of determining the local dimming data corresponding to each backlight partition row, it is not necessary to determine the local dimming data sequentially according to the transmission order of the display data. That is, it is not necessary to first determine the local dimming data corresponding to the first backlight partition row based on the display data corresponding to the first pixel unit row, then determine the local dimming data corresponding to the second backlight partition row based on the display data corresponding to the second pixel unit row, and so on.

[0153] As shown in Figure 15, each backlight unit (BLU) can determine its own local dimming data. That is, in Figure 15, the local dimming data determined by the first row dimmer 743 in BLU 21 and the local dimming data determined by the first row dimmer 743 in BLU 22 can be performed simultaneously, which shortens the generation time of local dimming data.

[0154] Furthermore, in this scenario, the generation of local dimming data does not require the display time of the first image frame. Thus, during the display of the first image frame, the time difference between the driving display of the pixel unit row and the backlight illumination of its corresponding target backlight partition row can be further shortened to be equal to the backlight illumination delay of the dimmer. This achieves maximum synchronization between the driving display of the pixel unit row and the backlight illumination of its corresponding target backlight partition row, thereby achieving a superior image display effect on the display device.

[0155] Figure 16 shows a timing control schematic diagram of a display device provided in another embodiment of this application. As shown in Figure 16, since the structure of the display device shown in Figure 16 is the same as that of the display device shown in Figure 13, it will not be described again. Please refer to the description of the structure of the display device shown in Figure 13 in the above embodiments.

[0156] As shown in Figure 16, firstly, the dimmers 743 belonging to the first backlight zone row in backlight units BLU 31 and BLU 32, and the dimmers 743 belonging to the third backlight zone row in backlight units BLU 33 and BLU 34, simultaneously receive local dimming data. Next, the dimmers 743 belonging to the second backlight zone row in BLU 31 and BLU 32, and the dimmers 743 belonging to the fourth backlight zone row in BLU 33 and BLU 34, simultaneously receive local dimming data. At this point, the local dimming data transmission is complete. Therefore, in this scenario, as shown in Figure 16, there will still be a transmission delay from the dimming controller 72.

[0157] In the display control method shown in Figure 16, the local dimming data is also determined based on the second display data corresponding to the second image frame. Therefore, in the process of determining the local dimming data corresponding to each backlight partition row, it is not necessary to determine the local dimming data sequentially according to the transmission order of the display data. Each backlight unit (BLU) can determine its own corresponding local dimming data.

[0158] As shown in Figure 16, the first row dimmer 743 in BLUs 31, 32, 33, and 34 determines that local dimming data can be generated simultaneously, further shortening the local dimming data generation time. Furthermore, in this case, the generation of local dimming data does not require occupying the display time of the first image frame. Thus, during the display of the first image frame, the time difference between the driving display of the pixel unit row and the backlight illumination of its corresponding target backlight partition row can be further shortened to be equal to the backlight illumination delay of the dimmer, achieving maximum synchronization between the driving display of the pixel unit row and the backlight illumination of its corresponding target backlight partition row, effectively improving the image display effect.

[0159] After receiving local dimming data, dimmer 743 will perform the following operations:

[0160] In some embodiments, when the dimmer 743 detects that the backlight illumination delay has arrived, it generates a second synchronization signal, wherein the time difference between the triggering time of the second synchronization signal and the triggering time of the first synchronization signal is equal to the backlight illumination delay of the dimmer 743.

[0161] The following explanation is based on Figures 14-16:

[0162] Referring to Figure 14, since both BLU 11 and BLU 12 are used as target backlight units, the backlight illumination delay of the dimmers belonging to the same backlight zone row in BLU 11 and BLU 12 is consistent.

[0163] Referring to FIG15, BLU 21 is used as the target backlight unit in the first half of the display cycle of the first image frame; while BLU 22 is used as the target backlight unit in the second half of the display cycle of the first image frame. Therefore, as shown in FIG15, the backlight illumination delay of the first row dimmer 743 in BLU 21 is less than the backlight illumination delay of the first row dimmer 743 in BLU 22.

[0164] Referring to FIG16, in the first half of the display cycle of the first image frame, BLU 31 and BLU 32 are used as target backlight units; while in the second half of the display cycle of the first image frame, BLU 33 and BLU 34 are used as target backlight units. Therefore, as shown in FIG16, the backlight illumination delay of the first row dimmer 743 in BLU 31 and BLU 32 is less than the backlight illumination delay of the first row dimmer 743 in BLU 33 and BLU 34.

[0165] It should be noted that the backlight control method in the structure shown in Figures 14-16 is similar to that in Figures 11-13, so it will not be described again. Please refer to the relevant description of the backlight control of the backlight panel 74 in Figures 11-13 in the above embodiments.

[0166] Furthermore, the above embodiments are all described using the example of a backlight partition row consisting of one backlight partition. In practical applications, a backlight partition row may include multiple backlight partitions, and this application embodiment does not impose any restrictions on this. Of course, when a backlight partition row includes one backlight partition, its display effect is superior to that when a backlight partition row includes multiple backlight partitions.

[0167] In the above embodiments, the local dimming data used to control the backlight brightness can be generated from the second display data of the second image frame. Since the second image frame is an image frame preceding the first image frame, the local dimming data can be obtained by the backlight panel at the trigger time of the first synchronization signal. In this case, the time difference between the trigger time of the first synchronization signal used to control the display panel and the trigger time of the second synchronization signal used to control the backlight panel is the backlight illumination delay of the dimmer in the backlight panel. Since this backlight illumination delay is necessary for the dimmer to process the local dimming data, by shortening the time difference between the driving display timing of the pixel unit row in the display panel and the backlight illumination timing of its corresponding target backlight partition row to be consistent with the backlight illumination delay, the maximum synchronization between the driving display of the pixel unit row and the backlight illumination of its corresponding target backlight partition row can be ensured, thereby improving the image display effect of the display device and enhancing the display performance of the display device.

[0168] Based on the same concept, this application also provides a display device applicable to the display control method provided in any of the above embodiments. Since the display device is the same as the display control method in the embodiments of this application, and the principle of the display device in solving the problem is similar to that of the display control method, the implementation of the display device can refer to the implementation of the display control method, and the repeated parts will not be described again.

[0169] As shown in Figure 7, the display device 70 includes a display panel 73 and a backlight panel 74. The display panel 73 has multiple pixel unit rows 732, and the backlight panel 74 has multiple backlight units 741. Each backlight unit 741 includes multiple backlight zones 742, wherein:

[0170] The display panel 73 is used to drive the pixel unit rows according to the first display data and in a preset order under the control of the first synchronization signal, wherein the first display data is the display data corresponding to the first image frame;

[0171] The backlight panel 74 is used to control the target backlight partition row 745 to turn on the backlight under the control of the second synchronization signal, based on the local dimming data and the arrangement of the backlight unit 741 on the backlight panel 74.

[0172] The triggering time of the second synchronization signal is no earlier than the triggering time of the first synchronization signal.

[0173] In some embodiments, the display device 70 further includes a timing controller 71 and a dimming controller 72, wherein:

[0174] The timing controller 71 is connected to the display panel 73, and the dimming controller 72 is connected to the timing controller 71 and the backlight panel 74 respectively. The backlight zone 742 includes a dimmer 743 and a light-emitting unit 744 connected to the dimmer 743.

[0175] The timing controller 71 is used to generate local dimming data based on the first display data, and transmit the local dimming data to the dimmer 743 via the dimming controller 72.

[0176] A first synchronization signal is generated and sent to the display panel 73;

[0177] The dimmer 743 is used to generate a second synchronization signal, and under the control of the second synchronization signal, according to the local dimming data and the arrangement of the backlight unit 741 on the backlight panel 74, a backlight control signal is generated to control the light-emitting unit 744 connected to the dimmer 743 to turn on the backlight.

[0178] The time difference between the moment when the dimmer 743 generates the second synchronization signal and the moment when the timing controller 71 generates the first synchronization signal is determined based on the generation delay generated by the timing controller 71 in generating local dimming data.

[0179] In some embodiments, the timing controller 71 is specifically used to: generate local dimming data corresponding to the target backlight partition row 745 in sequence according to the first display data and in a preset order, and transmit the local dimming data to the dimmer 743 in the target backlight partition row 745 through the dimming controller 72, wherein the start time of the local dimming data generation is consistent with the time when the timing controller 71 generates the first synchronization signal.

[0180] The dimmer 743 is specifically used to generate a second synchronization signal at the end of the local dimming data generation.

[0181] In some embodiments, the display device 70 further includes a timing controller 71 and a dimming controller 72, wherein:

[0182] The timing controller 71 is connected to the display panel 73, and the dimming controller 72 is connected to the timing controller 71 and the backlight panel 74 respectively. The backlight zone 742 includes a dimmer 743 and a light-emitting unit 744 connected to the dimmer 743.

[0183] The timing controller 71 is used to generate local dimming data based on the second display data, and send the local dimming data to the dimmer 743 via the dimming controller 72.

[0184] A first synchronization signal is generated and sent to the display panel 73, wherein the second display data is the display data corresponding to the second image frame, and the second image frame is located before the first image frame;

[0185] The dimmer 743 is used to generate a second synchronization signal, and under the control of the second synchronization signal, according to the local dimming data and the arrangement of the backlight unit 741 on the backlight panel 74, a backlight control signal is generated to control the light-emitting unit 744 connected to the dimmer 743 to turn on the backlight.

[0186] The time difference between the moment when the dimmer 743 generates the second synchronization signal and the moment when the timing controller 71 generates the first synchronization signal is determined based on the backlight lighting delay of the dimmer 743.

[0187] In some embodiments, the timing controller 71 is specifically used to: for any backlight unit 741 on the backlight panel 74, generate local dimming data corresponding to each backlight partition 742 row in the backlight unit 741 according to the second display data and in a preset order, and transmit the local dimming data to the dimmer 743 in the target backlight partition row 745 through the dimming controller.

[0188] Specifically, the dimmer 743 is used to generate a second synchronization signal when the backlight illumination delay of the dimmer 743 is reached;

[0189] The end time of local dimming data generation coincides with the time when the timing controller 71 generates the first synchronization signal.

[0190] In some embodiments, the target backlight partition row 745 is composed of a plurality of backlight partitions 742 corresponding to the driven pixel unit row 732, and the backlight partitions 742 in the target backlight partition row 745 belong to at least one backlight unit 741.

[0191] The dimmer 743 is specifically used to: generate a backlight control signal based on the local dimming data corresponding to the target backlight partition row 745, and send the backlight control signal to the light-emitting unit 744 connected to the dimmer 743 and belonging to the target backlight partition row 745;

[0192] Among them, the backlight partitions 742 included in the target backlight partition row 745 belong to the target backlight unit. The target backlight unit is determined from multiple backlight units 741 according to the arrangement of the backlight units 741 on the backlight panel 74.

[0193] In some embodiments, the backlight units 741 are arranged on the backlight panel 74 in any one of the following arrangements: arranged along the row direction, arranged along the column direction, or arranged in an array.

[0194] If the multiple backlight units 741 on the backlight panel 74 are arranged along the column direction, then the target backlight unit includes one.

[0195] If the multiple backlight units 741 on the backlight panel 74 are arranged in a row direction or in an array, then the target backlight unit includes multiple units.

[0196] It should be noted that the other essential components of the display device are all those that should be understood by those skilled in the art, and will not be described in detail here, nor should they be construed as limitations on this application.

[0197] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0198] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A display control method characterized by comprising: include: Under the control of the first synchronization signal, the pixel unit rows on the display panel are driven according to the first display data and in a preset order, wherein the first display data is the display data corresponding to the first image frame; Under the control of the second synchronization signal, the target backlight zone row on the backlight panel is controlled to turn on the backlight according to the local dimming data and the arrangement of the backlight units on the backlight panel. The triggering time of the second synchronization signal is no earlier than the triggering time of the first synchronization signal.

2. The method of claim 1, wherein, If the local dimming data is generated based on the first display data, then the time difference between the triggering time of the second synchronization signal and the triggering time of the first synchronization signal is determined based on the generation delay of the local dimming data.

3. The method of claim 2, wherein, The local dimming data is generated in the following way: Based on the first display data and in accordance with the preset order, local dimming data corresponding to the target backlight partition row is generated sequentially. The start time of the local dimming data generation is consistent with the trigger time of the first synchronization signal, and the end time of the local dimming data generation is consistent with the trigger time of the second synchronization signal.

4. The method of claim 1, wherein, If the local dimming data is generated based on the second display data, then the time difference between the trigger time of the second synchronization signal and the trigger time of the first synchronization signal is determined based on the backlight illumination delay of the dimmer. Wherein, the second display data is display data corresponding to the second image frame, the second image frame is located before the first image frame, and the backlight partition includes the dimmer and the light-emitting unit electrically connected to the dimmer.

5. The method of claim 4, wherein, The local dimming data is generated in the following way: For any backlight unit on the backlight panel, local dimming data corresponding to each backlight partition row in the backlight unit is generated sequentially according to the second display data and the preset order. The end time of the generation of the local dimming data is consistent with the trigger time of the first synchronization signal.

6. The method of any one of claims 1-5, wherein, The target backlight partition row is composed of multiple backlight partitions corresponding to the driven pixel unit row, and each backlight partition in the target backlight partition row belongs to at least one of the backlight units. The step of controlling the target backlight zone row on the backlight panel to turn on the backlight based on local dimming data and the arrangement of the backlight units on the backlight panel includes: Based on the arrangement of the backlight units on the backlight panel, a target backlight unit is determined among the multiple backlight units provided on the backlight panel, wherein the backlight partitions included in the target backlight partition row belong to the target backlight unit. Based on the local dimming data corresponding to the target backlight partition row, control each backlight partition in the target backlight unit that belongs to the target backlight partition row to turn on the backlight.

7. The method of claim 6, wherein, The backlight units are arranged on the backlight panel in any one of the following ways: arranged along the row direction, arranged along the column direction, or arranged in an array. If the multiple backlight units on the backlight panel are arranged along a column direction, then the target backlight unit includes one. If the multiple backlight units on the backlight panel are arranged in a row or in an array, then the target backlight unit includes multiple units.

8. A display device, characterized by comprising: The display panel includes a display panel and a backlight panel. The display panel has multiple rows of pixel units, and the backlight panel has multiple backlight units. Each backlight unit includes multiple backlight zones, wherein: The display panel is used to drive the pixel unit rows according to the first display data and in a preset order under the control of the first synchronization signal, wherein the first display data is display data corresponding to the first image frame; The backlight panel is used to control the target backlight zone row to turn on the backlight under the control of the second synchronization signal, based on local dimming data and the arrangement of the backlight units on the backlight panel. The triggering time of the second synchronization signal is no earlier than the triggering time of the first synchronization signal.

9. The display device of claim 8, wherein, It also includes a timing controller and a dimming controller, wherein: The timing controller is connected to the display panel, and the dimming controller is connected to both the timing controller and the backlight panel. The backlight zone includes a dimmer and a light-emitting unit connected to the dimmer. The timing controller is configured to generate the local dimming data based on the first display data, and transmit the local dimming data to the dimmer via the dimming controller. Generate the first synchronization signal and send the first synchronization signal to the display panel; The dimmer is used to generate the second synchronization signal, and under the control of the second synchronization signal, generate a backlight control signal according to the local dimming data and the arrangement of the backlight units on the backlight panel, so as to control the light-emitting units connected to the dimmer to turn on the backlight. The time difference between the moment when the dimmer generates the second synchronization signal and the moment when the timing controller generates the first synchronization signal is determined based on the generation delay generated by the timing controller when generating the local dimming data.

10. The display device of claim 9, wherein, The timing controller is specifically used to: generate local dimming data corresponding to the target backlight partition row according to the first display data and the preset order, and transmit the local dimming data to the dimmer in the target backlight partition row through the dimming controller, wherein the start time of the generation of the local dimming data is consistent with the time when the timing controller generates the first synchronization signal; The dimmer is specifically used to generate the second synchronization signal at the end of the local dimming data generation.

11. The display device of claim 8, wherein, It also includes a timing controller and a dimming controller, wherein: The timing controller is connected to the display panel, and the dimming controller is connected to both the timing controller and the backlight panel. The backlight zone includes a dimmer and a light-emitting unit connected to the dimmer. The timing controller is configured to generate the local dimming data based on the second display data, and send the local dimming data to the dimmer via the dimming controller. The first synchronization signal is generated and sent to the display panel, wherein the second display data is display data corresponding to the second image frame, and the second image frame is located before the first image frame; The dimmer is used to generate the second synchronization signal, and under the control of the second synchronization signal, generate a backlight control signal according to the local dimming data and the arrangement of the backlight units on the backlight panel, so as to control the light-emitting units connected to the dimmer to turn on the backlight. The time difference between the moment when the dimmer generates the second synchronization signal and the moment when the timing controller generates the first synchronization signal is determined based on the backlight illumination delay of the dimmer.

12. The display device of claim 11, wherein, The timing controller is specifically used to: for any backlight unit on the backlight panel, generate local dimming data corresponding to each backlight partition row in the backlight unit according to the second display data and in the preset order, and transmit the local dimming data to the dimmer in the target backlight partition row through the dimming controller; The dimmer is specifically used to generate the second synchronization signal when the backlight illumination delay of the dimmer arrives; The end time of the local dimming data generation is consistent with the time when the timing controller generates the first synchronization signal.

13. A display device as claimed in any one of claims 9-12, characterized in that The target backlight partition row is composed of a plurality of backlight partitions corresponding to the driven pixel unit row, and each backlight partition in the target backlight partition row belongs to at least one of the backlight units. The dimmer is specifically used to: generate the backlight control signal based on the local dimming data corresponding to the target backlight partition row, and send the backlight control signal to the light-emitting unit connected to the dimmer and belonging to the target backlight partition row; The target backlight partition row includes backlight partitions belonging to target backlight units, which are determined from the plurality of backlight units according to the arrangement of the backlight units on the backlight panel.

14. The display device of claim 13, wherein, The backlight units are arranged on the backlight panel in any one of the following ways: arranged along the row direction, arranged along the column direction, or arranged in an array. If the multiple backlight units on the backlight panel are arranged along a column direction, then the target backlight unit includes one. If the multiple backlight units on the backlight panel are arranged in a row or in an array, then the target backlight unit includes multiple units.

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