Display control method and display device

Abstract

The present invention discloses a display control method and a display device, the method comprising: under the control of a first synchronization signal, driving a pixel unit row on a display panel in a preset order; under the control of a second synchronization signal, controlling a target backlight partition row to turn on the backlight according to local dimming data and the arrangement of the backlight unit on the backlight panel; the triggering time of the second synchronization signal is no earlier than the triggering time of the first synchronization signal. By also setting a synchronization signal in the backlight control and limiting the triggering timing of the two synchronization signals, the driving of the pixel unit row and the backlight lighting of the target backlight partition row are almost synchronized, and the backlight partitions in the target backlight partition row will not be affected by the different backlight units to which they belong, thereby improving the display performance of the display device.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display control method and a display device. Background Art

[0002] In recent years, with the rapid development of image display technology, in order to provide users with a better visual experience, display devices have gradually developed in the direction of large-scale and high-performance. In large-scale display devices, in order to match the larger display panel, its backlight panel is usually composed of multiple backlight units (BLU for short); in addition, in order to ensure that the image displayed on the display panel has a good color contrast, local dimming technology (LD for short) is usually used on the backlight panel to control the backlight.

[0003] However, in the above-mentioned large-scale display devices, when local dimming technology is used to control multiple BLUs in the backlight panel, there will be a relatively obvious time difference between the backlight lighting of multiple BLUs and the pixel display on the display panel end, which will cause the image display effect of the display device to deteriorate and seriously affect the display performance of the display device. Summary of the invention

[0004] The present invention provides a display control method and a display device, which are used to solve the problem of reduced display performance of the existing multi-BLU display device due to the need to control multiple BLUs and the asynchronism between backlight lighting of the multiple BLUs and image display on the display panel.

[0005] In a first aspect, an embodiment of the present invention provides a display control method, including:

[0006] Under the control of the first synchronization signal, driving the pixel unit rows on the display panel according to the first display data and in a preset order, wherein the first display data is display data corresponding to the first image frame;

[0007] Under the control of the second synchronization signal, according to the local dimming data and the arrangement of the backlight units on the backlight panel, the target backlight sub-rows on the backlight panel are controlled to turn on the backlight;

[0008] The triggering time of the second synchronization signal is not earlier than the triggering time of the first synchronization signal.

[0009] The display control method provided by the embodiment of the present invention, under the control of the second synchronization signal, makes the target backlight partition rows on the backlight panel follow the driving order of the pixel unit rows on the display panel and light up row by row, and by setting the triggering time of the second synchronization signal to be no earlier than the triggering time of the first synchronization signal, the driving display of the pixel unit row is almost synchronized with the backlight lighting of the corresponding target backlight partition rows, and the backlight partitions in the target backlight partition rows will not be affected by the different backlight units to which they belong, thereby improving the display performance of the multi-backlight partition BLU display device.

[0010] In an optional embodiment, if the local dimming data is generated according to the first display data, the time difference between the triggering moment of the second synchronization signal and the triggering moment of the first synchronization signal is determined according to the generation delay of the local dimming data.

[0011] In an optional embodiment, the local dimming data is generated in the following manner:

[0012] According to the first display data and in accordance with the preset order, sequentially generate local dimming data corresponding to the target backlight partition rows;

[0013] The start time of generating the local dimming data is consistent with the triggering time of the first synchronization signal, and the end time of generating the local dimming data is consistent with the triggering time of the second synchronization signal.

[0014] In the above method, local dimming data for controlling the backlight brightness can be generated by the first display data of the first image frame. At this time, the time difference between the triggering moment of the first synchronization signal for controlling the display panel and the triggering moment of the second synchronization signal for controlling the backlight panel is the generation delay of the local dimming data. Since the generation delay is unavoidable during the display process, in an embodiment of the present invention, 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 is shortened to be consistent with the generation delay, thereby ensuring the maximum synchronization between the driving display of the pixel unit row and the backlight lighting of its corresponding target backlight partition row, thereby improving the image display effect of the display device and enhancing the display performance of the display device.

[0015] In an optional embodiment, if the local dimming data is generated according to the second display data, the time difference between the triggering moment of the second synchronization signal and the triggering moment of the first synchronization signal is determined according to the backlight lighting delay of the dimmer;

[0016] The second display data is display data corresponding to a second image frame, the second image frame is located before the first image frame, and the backlight partition includes the dimmer and a light-emitting unit electrically connected to the dimmer.

[0017] In an optional embodiment, the local dimming data is generated in the following manner:

[0018] For any backlight unit on the backlight panel, based on the second display data and in accordance with the preset order, sequentially generate local dimming data corresponding to each backlight partition row in the backlight unit;

[0019] The end time of generating the local dimming data is consistent with the triggering time of the first synchronization signal.

[0020] In the above method, the local dimming data for controlling the backlight brightness can be generated by the second display data of the second image frame. Since the second image frame is the image frame before the first image frame, the local dimming data can be obtained from the backlight panel at the triggering moment of the first synchronization signal. In this case, the time difference between the triggering moment of the first synchronization signal for controlling the display panel and the triggering moment of the second synchronization signal for controlling the backlight panel is the backlight lighting delay of the dimmer in the backlight panel. Since the backlight lighting delay is necessary for the dimmer to process the local dimming data, the time difference between the driving display timing of the pixel unit row in the display panel and the backlight lighting timing of the corresponding target backlight partition row is shortened to be consistent with the backlight lighting delay, thereby ensuring the maximum synchronization between the driving display of the pixel unit row and the backlight lighting of the corresponding target backlight partition row, improving the image display effect of the display device, and enhancing the display performance of the display device.

[0021] In an optional 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;

[0022] The method of controlling a target backlight sub-row on the backlight panel to turn on the backlight according to the local dimming data and the arrangement of the backlight units on the backlight panel comprises:

[0023] Determine a target backlight unit among a plurality of backlight units provided on the backlight panel according to an arrangement of the backlight units on the backlight panel, wherein the backlight partitions included in the target backlight partition row belong to the target backlight unit;

[0024] According to the local dimming data corresponding to the target backlight partition row, each backlight partition in the target backlight unit belonging to the target backlight partition row is controlled to turn on the backlight.

[0025] The above method determines a target backlight unit among the multiple backlight units according to the arrangement of the multiple backlight units on the backlight panel, and the target backlight unit may be one or more; and the multiple backlight partitions corresponding to the currently driven pixel unit row in the determined target backlight unit are combined into a target backlight partition row. In this way, when performing backlight control, each backlight partition in the target backlight partition row will be controlled to turn on the backlight at the same time, thereby avoiding the backlight partitions in the target backlight partition row being affected by the different backlight units to which they belong, thereby improving the display performance of the multi-BLU display device.

[0026] In an optional embodiment, the backlight units are arranged on the backlight panel in any one of a row direction, a column direction, and an array direction;

[0027] If the arrangement of the plurality of backlight units on the backlight panel is along a column direction, the target backlight unit includes one;

[0028] If the plurality of backlight units on the backlight panel are arranged along a row direction or in an array, the target backlight unit includes a plurality of backlight units.

[0029] According to the above method, multiple backlight units can be arranged in a variety of ways on the backlight panel, which can be flexibly set 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, thereby improving the user's visual experience.

[0030] In a second aspect, an embodiment of the present invention provides a display device, including a display panel and a backlight panel, wherein the display panel is provided with a plurality of pixel unit rows, and the backlight panel is provided with a plurality of backlight units, wherein one backlight unit includes a plurality of backlight partitions, wherein:

[0031] The display panel is used to drive the pixel unit rows according to first display data and in a preset order under the control of a first synchronization signal, wherein the first display data is display data corresponding to a first image frame;

[0032] The backlight panel is used to control the target backlight partition row to turn on the backlight according to the local dimming data and the arrangement of the backlight units on the backlight panel under the control of the second synchronization signal;

[0033] The triggering time of the second synchronization signal is not earlier than the triggering time of the first synchronization signal.

[0034] In an optional embodiment, the display device further includes a timing controller and a dimming controller, wherein:

[0035] The timing controller is connected to the display panel, the dimming controller is connected to the timing controller and the backlight panel respectively, and the backlight partition includes a dimmer and a light-emitting unit connected to the dimmer;

[0036] The timing controller is used to generate the local dimming data according to the first display data, and transmit the local dimming data to the dimmer through the dimming controller, and

[0037] generating the first synchronization signal, and sending the first synchronization signal to the display panel;

[0038] The dimmer is used to generate the second synchronization signal, and under the control of the second synchronization signal, generates 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 unit connected to the dimmer to turn on the backlight;

[0039] The time difference between the time when the dimmer generates the second synchronization signal and the time when the timing controller generates the first synchronization signal is determined according to the generation delay generated by the timing controller generating the local dimming data.

[0040] In an optional embodiment, the timing controller is specifically used to: generate local dimming data corresponding to the target backlight partition row in sequence 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 generating the local dimming data is consistent with the time when the timing controller generates the first synchronization signal;

[0041] The dimmer is specifically configured to generate the second synchronization signal at the end time of generating the local dimming data.

[0042] In an optional embodiment, the display device further includes a timing controller and a dimming controller, wherein:

[0043] The timing controller is connected to the display panel, the dimming controller is connected to the timing controller and the backlight panel respectively, and the backlight partition includes a dimmer and a light-emitting unit connected to the dimmer;

[0044] The timing controller is used to generate the local dimming data according to the second display data, and send the local dimming data to the dimmer through the dimming controller, and

[0045] generating the first synchronization signal, and sending the first synchronization signal to the display panel, wherein the second display data is display data corresponding to a second image frame, and the second image frame is located before the first image frame;

[0046] The dimmer is used to generate the second synchronization signal, and under the control of the second synchronization signal, generates 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 unit connected to the dimmer to turn on the backlight;

[0047] The time difference between the time when the dimmer generates the second synchronization signal and the time when the timing controller generates the first synchronization signal is determined according to the backlight lighting delay of the dimmer.

[0048] 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;

[0049] The dimmer is specifically used to: generate the second synchronization signal when the backlight lighting delay of the dimmer arrives;

[0050] The end time of generating the local dimming data is consistent with the time when the timing controller generates the first synchronization signal.

[0051] In an optional embodiment, the target backlight partition row is composed of a plurality of the 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;

[0052] The dimmer is specifically used to: generate the backlight control signal according to 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;

[0053] The backlight partitions included in the target backlight partition row belong to a target backlight unit, and the target backlight unit is determined from the plurality of backlight units according to an arrangement of the backlight units on the backlight panel.

[0054] In an optional embodiment, the backlight units are arranged on the backlight panel in any one of a row direction, a column direction, and an array direction;

[0055] If the arrangement of the plurality of backlight units on the backlight panel is along a column direction, the target backlight unit includes one;

[0056] If the plurality of backlight units on the backlight panel are arranged along a row direction or in an array, the target backlight unit includes a plurality of backlight units.

[0057] For the technical effects that may be achieved by the display device disclosed in the second aspect, please refer to the technical effects that may be achieved by the first aspect or various possible solutions in the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0059] Figure 1 A schematic diagram of the structure of a display device provided for related technology;

[0060] Figure 2 A schematic diagram of the structure of a display panel provided for related technology;

[0061] Figure 3 A schematic diagram of the structure of a backlight panel provided for related technology;

[0062] Figure 4 A schematic diagram of the principle of a global dimming technology provided for related technologies;

[0063] Figure 5 A schematic diagram of the principle of a local dimming technology provided for related technologies;

[0064] Figure 6 A schematic diagram of the principle of applying local dimming technology to a large-scale display device provided in the related technology;

[0065] Figure 7 A schematic diagram of the structure of a display device provided by an embodiment of the present invention;

[0066] Figure 8 A schematic diagram of the correspondence between backlight partitions and pixel partitions provided in an embodiment of the present invention;

[0067] Fig.9A A schematic diagram of an arrangement of a backlight unit on a backlight panel provided by an embodiment of the present invention;

[0068] Fig. 9BA schematic diagram of another arrangement of backlight units on a backlight panel provided by an embodiment of the present invention;

[0069] Fig. 9C A schematic diagram of another arrangement of backlight units on a backlight panel provided by an embodiment of the present invention;

[0070] Fig.10 A schematic diagram of a working process of a display control method for a display device provided by an embodiment of the present invention;

[0071] Fig.11 A display timing diagram of a display device provided by an embodiment of the present invention;

[0072] Fig.12 A schematic diagram of display timing of another display device provided by an embodiment of the present invention;

[0073] Fig.13 A schematic diagram of display timing of another display device provided by an embodiment of the present invention;

[0074] Fig.14 A schematic diagram of display timing of another display device provided by an embodiment of the present invention;

[0075] Fig.15 A schematic diagram of display timing of another display device provided by an embodiment of the present invention;

[0076] Fig.16 A schematic diagram of display timing of another display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0077] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0078] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0079] With the rapid development of image display technology, in order to bring better visual experience to users, display devices are gradually developing in the direction of large-scale and high-performance. Figure 1 A schematic diagram of the structure of a display device is shown. Figure 1 As shown, the display device 100 generally 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 respectively, and the dimming controller 120 is also connected to the backlight panel 140; the display panel 130 and the backlight panel 140 are arranged opposite to each other, and the display panel 130 is located on the light emitting side of the backlight panel 140.

[0080] Among them, Figure 1 As shown, a dimmer 141 and a light emitting unit 142 are provided on the backlight panel 140 , wherein 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.

[0081] In actual applications, the timing controller 110 generates local dimming data (English: Local Dimming Data) according to the display data (English: DisplayData) corresponding to an image frame, and sends the local dimming data to the dimming controller 120, and sends 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 (English: Pulse-Width Modulation, Chinese: Pulse Width Modulation) local dimming data according to the received local dimming data, and sends the PWM local dimming data to the light-emitting unit 142 connected thereto to control the lighting of the light-emitting unit 142, thereby providing corresponding backlight for the display panel 130; the display panel 130 can display the image frame according to the received display data and using the backlight provided by the backlight panel 140.

[0082] Figure 2 A schematic diagram of the structure of a display panel is shown. Figure 2As shown, a pixel array composed of liquid crystal molecules, a source driver chip (English: Source Driver IC) 131 and a gate driver chip (English: Gate Driver IC) 132 are arranged on the display panel 130, wherein the pixel array can be divided into a plurality of pixel unit rows 133, and a pixel unit row 133 includes a plurality of pixel units arranged along a row direction; the source driver chip 131 is connected to each pixel unit through a data line, and the gate driver chip 132 is connected to each pixel unit through a scan line.

[0083] In actual 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 a timing drive signal to each pixel unit row 133 through the scan line to drive the corresponding pixel unit row 133, and display an image according to the display data received by each pixel unit in the pixel unit row 133.

[0084] It should be noted that, during the sequential driving process, the driving sequence (ie, the preset sequence in the embodiment of the present invention) can be a forward scanning drive from top to bottom, or a forward scanning drive can be performed first and then a reverse scanning drive.

[0085] Figure 3 A schematic diagram of the structure of a backlight panel is shown. Figure 3 As shown, a plurality of dimmers 141 and a plurality of light emitting units 142 are provided on the backlight panel 140, and one dimmer 141 is connected to at least one light emitting unit 142. Figure 3 In the backlight panel structure, 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, and can be flexibly set according to actual business needs.

[0086] In practical applications, the light emitting units 142 on the backlight panel 140 may be arranged in an array, and the number of the light emitting units 142 may be set accordingly according to the size of the display panel 130. The dimmers 141 may also be distributed in an array according to the distribution of the light emitting units 142; the dimmers 141 are used to control the brightness of the light emitting units 142 connected thereto according to the received local dimming data, thereby adjusting the backlight brightness provided by the backlight panel 140.

[0087] There are generally two ways to adjust the backlight brightness of the backlight panel 140:

[0088] One is to use global dimming technology: Figure 4As shown, within the display cycle of an image frame, each light-emitting unit (not shown in the figure) in the backlight panel 140 always remains in a lit state and has the same light brightness, so as to provide backlight for the display panel 130 and ensure that the display panel 130 displays images normally, so that the human eye can see the displayed image frame.

[0089] Another is to use local dimming technology: Figure 5 As shown, the backlight panel 140 is divided into a plurality of backlight partitions 143. A backlight partition may include one or more dimmers and a plurality of light emitting units connected to the dimmers. The backlight brightness of each backlight partition is independent of each other, that is, Figure 5 The different fillings in each backlight partition 143 represent different backlight brightness. Through this dimming method, the image displayed by the display panel 130 can have better color contrast, and the display effect of the image frame seen by the human eye will be better.

[0090] In a display device using global dimming technology, since each light-emitting unit in the backlight panel 140 is always in a lit state, there is no need to consider the synchronization between the backlight lighting of the backlight panel 140 and the image display of the display panel 130. However, in a display device using local dimming technology, there will be a certain time difference between the lighting of the backlight partitions in the backlight panel 140 and the image display of the display panel 130, which will affect the performance of the display device.

[0091] Especially in large-scale display devices, in order to match the larger display panel, the backlight panel is usually composed of multiple backlight units (BLUs). Figure 6 As shown, the backlight panel 140 is composed of four backlight units 140A, wherein the display device also uses local dimming technology to control the backlight of the display panel. Figure 6 In the large-scale display device shown, since the backlight panel 140 is no longer composed of a single backlight unit, but is composed of multiple backlight units, when local dimming technology is used to control the multiple backlight units in the backlight panel, there will be a relatively obvious time difference between the backlight lighting of the multiple backlight units and the pixel display on the display panel end, which will cause the image display effect of the display device to deteriorate and seriously affect the display performance of the display device.

[0092] Based on this, an embodiment of the present invention provides a display control method and a display device to achieve synchronization between display driving on the display panel side and backlight lighting on the backlight panel side, improve the image display effect of the display device, and enhance the display performance of the display device.

[0093] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0094] The display control method provided by the embodiment of the present invention is specifically introduced below with reference to the accompanying drawings:

[0095] The display control method provided by the embodiment of the present invention can be applied to large-scale display devices. Figure 7 A schematic diagram of the structure of a display device provided by an embodiment of the present invention is shown. Figure 7 As shown, the display device 70 generally includes a timing controller 71, a dimming controller 72, a display panel 73 and a backlight panel 74, wherein the timing controller 71 is connected to the dimming controller 72 and the display panel 73 respectively, and the dimming controller 72 is also connected to the backlight panel 74; the display panel 73 and the backlight panel 74 are arranged opposite to each other, and the display panel 73 is located on the light emitting side of the backlight panel 74.

[0096] Among them, a plurality of pixel units are arranged in an array on the display panel 73; a plurality of backlight units 741 are arranged on the backlight panel 74, one backlight unit 741 is divided into a plurality of backlight partitions 742, one backlight partition 742 includes at least one dimmer 743 and a light-emitting unit 744 connected to the dimmer 743; and one backlight partition 742 corresponds to one pixel partition 731 on the display panel 73, and the pixel partition 731 can be composed of i×j pixel units on the display panel 73, that is, one pixel partition 731 can include i pixel units along the row direction and j pixel units along the column direction, wherein i and j are both positive integers.

[0097] Figure 8 FIG. 4 shows a schematic diagram of the correspondence between backlight partitions and pixel partitions in a display device provided by an embodiment of the present invention. Figure 8 As shown, the backlight partition 742 and the pixel partition 731 at the same position correspond one to one, that is, Figure 8 The backlight partition 742 located at the upper right corner of the backlight panel 74 indicated in FIG. 7 corresponds to the pixel partition 731 located at the upper right corner of the display panel 73. Figure 8 The backlight provided by the backlight partition 742 indicated in Figure 8 . Display of pixel partition 731 indicated in FIG.

[0098] In the embodiment of the present invention, the display panel 73 may be a liquid crystal panel (LCP for short); the light-emitting unit 744 may be a direct-type AM mini-LED (Active Matrix MiniLight Emitting Diode).

[0099] 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, which is related to the actual size of the display panel 73, and the embodiment of the present invention does not impose any limitation on this.

[0100] The arrangement of the backlight units 741 on the backlight panel 74 in the embodiment of the present invention is described in detail below with reference to the accompanying drawings:

[0101] In some embodiments, a plurality of backlight units 741 may be arranged along a row direction on the backlight panel 74 .

[0102] For example, two backlight units (BLUs) 741 are provided on the backlight panel 74. Fig.9A As shown, two backlight units 741 are arranged along the row direction on the backlight panel 74. In order to facilitate the description of the subsequent embodiments, it is set Fig.9A The backlight unit 741 on the left is BLU 11 , and the backlight unit 741 on the right is BLU 12 .

[0103] In some embodiments, a plurality of backlight units 741 may be arranged along a column direction on the backlight panel 74 .

[0104] Still taking the case where two backlight units 741 are provided on the backlight panel 74 as an example, Fig. 9B As shown, two backlight units 741 are arranged along the column direction on the backlight panel 74. In order to facilitate the description of the subsequent embodiments, it is set Fig. 9B The backlight unit 741 at the upper middle side is the BLU 21 , and the backlight unit 741 at the lower side is the BLU 22 .

[0105] In some embodiments, a plurality of backlight units 741 may be arranged in an array on the backlight panel 74 .

[0106] For example, four backlight units 741 are provided on the backlight panel 74. Fig. 9C As shown, 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. Fig. 9CThe backlight unit 741 at the upper left corner is BLU31, the backlight unit 741 at the upper right corner is BLU32, the backlight unit 741 at the lower left corner is BLU33, and the backlight unit 741 at the lower right corner is BLU34.

[0107] Of course, the above-mentioned arrangements are only representative arrangements. In practical applications, according to specific business requirements, the backlight units 741 can also be arranged in other ways on the backlight panel 74, and the embodiment of the present invention 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 the embodiment of the present invention does not impose any restrictions on this. By setting multiple backlight units on the backlight panel, high color contrast of large-scale display devices can be guaranteed, and the user's visual experience can be improved.

[0108] Based on Figure 7 The display device structure shown in FIG. Fig.10 As shown, the display control method provided by the embodiment of the present invention may include the following steps:

[0109] Step S1001 , under the control of a first synchronization signal, driving the pixel unit row 732 on the display panel 73 according to first display data and in a preset order, wherein the first display data is display data corresponding to a first image frame.

[0110] In some embodiments, the pixel units on the display panel 73 are driven in rows. Figure 7 As shown, one or more rows of pixel units on the display panel 73 constitute a pixel unit row 732. Taking the preset order of driving from top to bottom as an example, during the display driving process of the first image frame, the first pixel unit row 732 will be driven for display first, and then the second pixel unit row 732 will be driven for display, and so on, until the last pixel unit row 732 is driven to display, and the display of the first image frame can be realized.

[0111] In addition, at the beginning of the display period 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, and at the same time receives the timing drive signal through the scan line to drive each pixel unit row 732 one by one according to a preset order.

[0112] It should be noted that the first synchronization signal in the embodiment of the present invention may be a vertical synchronization signal LCDVsync or a horizontal synchronization signal LCDHsync, and the present invention does not impose any limitation on this.

[0113] Fig.11 A timing control schematic diagram of a display device provided by an embodiment of the present invention is shown. Fig.11 As shown, after the display panel 73 receives the first synchronization signal, it will sequentially drive each pixel unit row 732 in a preset order from top to bottom to display an image until the end.

[0114] It should be noted that the above embodiment uses a preset order from top to bottom to drive the pixel unit row is only an example and should not impose any limitation on the embodiment of the present invention. In practical applications, the display device can be driven in any possible scanning order.

[0115] Step S1002, 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, the target backlight partition row 745 on the backlight panel 74 is controlled to turn on the backlight, wherein the triggering time of the second synchronization signal is not earlier than the triggering time of the first synchronization signal.

[0116] Among them, Figure 7 As shown, the target backlight partition row 745 for controlling the backlight to be turned on in step S1002 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 .

[0117] It should be noted that the second synchronization signal in the embodiment of the present invention may be a vertical synchronization signal BLUVsync or a horizontal synchronization signal BLUHsync, and the present invention does not impose any limitation on this.

[0118] In the specific implementation, Fig.11 As shown, while the display panel 73 is being driven for line-by-line 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 pixel units in the display panel 73 are driven in units of rows, the backlight partitions 742 on the backlight panel 74 are also lit in units of rows accordingly. However, since a plurality of backlight units 741 are provided on the backlight panel 74 of the embodiment of the present invention, a row of backlight partitions 742 (i.e., the target backlight partition row 745) that are lit at the same time may belong to different backlight units 741, which requires that the plurality of backlight units 741 can operate simultaneously.

[0119] The display control method provided by the embodiment of the present invention is applied in a large-scale display device. In this type of display device, the backlight panel is composed of multiple backlight units. In the display control method, under the control of a second synchronization signal, a target backlight partition row on the backlight panel is lit up row by row following the driving sequence of a pixel unit row on the display panel. The multiple backlight partitions included in the target backlight partition row may belong to one backlight unit or to multiple backlight units, which is related to the arrangement of the backlight units on the backlight panel. By setting the triggering moment of the second synchronization signal to be no earlier than the triggering moment of the first synchronization signal, the driving display of the pixel unit row is almost synchronized with the backlight lighting of the corresponding target backlight partition row. The backlight partitions in the target backlight partition row will not be affected by the different backlight units to which they belong, thereby improving the display performance of the multi-BLU display device.

[0120] There are two possible implementations of the display control method in the embodiment of the present invention, which are described in detail below with reference to the accompanying drawings:

[0121] In some embodiments, the timing controller 71 may generate local dimming data according to 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 in sequence according to the first display data and in a preset order.

[0122] Combination Fig.11 , the backlight panel 74 includes a backlight unit BLU 11 and a backlight unit BLU 12 arranged along a row direction as an example for explanation: Fig.11 As shown, in 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 are also arranged along the column direction. Therefore, the formed backlight panel 74 includes 4 rows of dimmers 743, each row includes 8 dimmers 743, and each dimmer 743 is connected to 2 light-emitting units 744.

[0123] For the backlight panel 74, if 4×2 backlight partitions 742 are divided in each BLU, the entire backlight panel 74 includes 4×4 backlight partitions 742, each backlight partition 742 includes 2 dimmers 743 arranged along the row direction, and 4 light-emitting units 744 arranged in a 2×2 array. Therefore, the backlight panel 74 includes 4 backlight partition rows, and one backlight partition row includes 4 backlight partitions 742. Among the 4 backlight partitions 742, two backlight partitions 742 belong to BLU 11, and the other two backlight partitions 742 belong to BLU 12.

[0124] For ease of description, the backlight panel 74 includes four backlight partition rows, which are defined as the first backlight partition row to the fourth backlight partition row from top to bottom. Therefore, the timing controller 71 will first generate local dimming data corresponding to the first backlight partition row according to the first display data, and send the local dimming data to the dimmer 743 in the first backlight partition row through the dimming controller 72, and then generate local dimming data corresponding to the second backlight partition row, and send the local dimming data to the dimmer 743 in the second backlight partition row through the dimming controller 72, and so on, until the end.

[0125] Since the timing controller 71 needs to generate local dimming data according to the first display data corresponding to the first image frame, and the process of generating local dimming data according to the first display data necessarily requires a period of time, this period of time is the generation delay of the local dimming data, and this period of time is unavoidable. Therefore, the following processing is performed in the embodiment of the present invention:

[0126] In some embodiments, the timing controller 71 starts to generate local dimming data according to the first display data while generating the first synchronization signal, and the dimmer 743 on the backlight panel 73 generates a second synchronization signal at the end of the generation of the local dimming data. 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.

[0127] In a specific implementation, after the dimmer 743 generates the second synchronization signal, it indicates that backlight starts to be provided for the image display of the first image frame. Fig.11 When the display panel 73 drives the first pixel unit row thereon to display an image, the time difference between the backlight turn-on moments of the first backlight partition row (that is, the target backlight partition row) corresponding to the first pixel unit row is the generation delay of the local dimming data.

[0128] In some embodiments, the dimmer 743 is specifically used to: generate a backlight control signal based on 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 multiple backlight units 741 based on the arrangement of the backlight units 741 on the backlight panel 74.

[0129] like Fig.11As shown, since the backlight units BLU are arranged along the row direction on the backlight panel 74, BLU 11 and BLU 12 are both used as target backlight units. When the display panel 73 drives and displays the pixel unit row, the dimmers 743 in the backlight partitions 742 corresponding to the pixel unit row in BLU 11 and BLU 12 will simultaneously control the light-emitting units 744 connected thereto to emit light. In addition, as the pixel unit rows on the display panel 73 are driven row by row, the backlight partition rows on the backlight panel 74 will also light up the backlight row by row, thereby achieving approximately synchronization between the driving display of the pixel unit row and the backlight lighting of the target backlight partition row, thereby improving the display performance of the display device.

[0130] Fig.12 Another timing control schematic diagram of a display device provided by an embodiment of the present invention is shown. Fig.12 As shown, the backlight panel 74 includes backlight units BLU 21 and BLU 22 arranged in the column direction. In BLU 21 and BLU 22, the dimmers 743 are arranged in a 2×8 array, that is, for any BLU, 8 dimmers 743 are arranged along the row direction and 2 dimmers 743 are arranged along the column direction. Therefore, the formed backlight panel 74 includes 4 rows of dimmers 743, each row includes 8 dimmers 743, and each dimmer 743 is connected to 2 light-emitting units 744.

[0131] For the backlight panel 74, if 2×4 backlight partitions 742 are divided in each BLU, the entire backlight panel 74 includes 4×4 backlight partitions 742, and each backlight partition 742 includes 2 dimmers 743 arranged along the row direction, and 4 light-emitting units 744 arranged in a 2×2 array. Therefore, the backlight panel 74 includes a total of 4 backlight partition rows. For the convenience of description, these 4 backlight partition rows are defined from top to bottom as the first backlight partition row to the fourth backlight partition row. For the first backlight partition row and the second backlight partition row, the 4 backlight partitions 742 they include all belong to BLU 21; for the third backlight partition row and the fourth backlight partition row, the 4 backlight partitions 742 they include all belong to BLU 22.

[0132] Reference Fig.12 When the display panel 73 drives and displays the first pixel unit row, only BLU 21 needs to be used 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) in BLU 21 will control the light-emitting unit 744 connected thereto to emit light.

[0133] Reference Fig.12When the display panel 73 drives and displays the last pixel unit row, it only needs to use BLU22 as the target backlight unit. Therefore, the dimmer 743 in the fourth backlight sub-row (the fourth backlight sub-row corresponds to the last pixel unit row) in BLU 22 will control the light-emitting unit 744 connected thereto to emit light. The driving methods of other backlight sub-rows are similar, so they will not be described in detail.

[0134] Fig.13 Another timing control schematic diagram of a display device provided by an embodiment of the present invention is shown. Fig.13 As shown, 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, the dimmers 743 are arranged in a 2×4 array, that is, for any BLU, 4 dimmers 743 are arranged along the row direction and 2 dimmers 743 are arranged along the column direction. Therefore, the backlight panel 74 includes 4 rows of dimmers 743, each row includes 8 dimmers 743, and each dimmer 743 is connected to 2 light-emitting units 744.

[0135] For the backlight panel 74, if 2×2 backlight partitions 742 are divided in each BLU, the entire backlight panel 74 includes 4×4 backlight partitions 742, and each backlight partition 742 includes 2 dimmers 743 arranged along the row direction, and 4 light-emitting units 744 arranged in a 2×2 array. Therefore, the backlight panel 74 includes a total of 4 backlight partition rows. For the convenience of description, these 4 backlight partition rows are defined as the first backlight partition row to the fourth backlight partition row from top to bottom. For the first backlight partition row and the second backlight partition row, of the 4 backlight partitions 742 included therein, two backlight partitions 742 belong to BLU 31, and the other two backlight partitions 742 belong to BLU 33; for the third backlight partition row and the fourth backlight partition row, of the 4 backlight partitions 742 included therein, two backlight partitions 742 belong to BLU 33, and the other two backlight partitions 742 belong to BLU34.

[0136] Reference Fig.13 When the display panel 73 drives and displays the first pixel unit row, BLU 31 and BLU 32 are used as target backlight units. Therefore, the dimmer 743 in the backlight partition 742 corresponding to the first pixel unit row in BLU 31 and BLU 32 will simultaneously control the light-emitting unit 744 connected thereto to emit light.

[0137] Reference Fig.13When the display panel 73 drives and displays the last pixel unit row, BLU 33 and BLU 34 need to be used as target backlight units. Therefore, the dimmer 743 in the backlight partition 742 corresponding to the last pixel unit row in BLU 33 and BLU 34 will simultaneously control the light-emitting unit 744 connected thereto to emit light. The driving method of other backlight partition rows is similar, so it will not be repeated.

[0138] In the above embodiment, the local dimming data for controlling the backlight brightness can be generated by the first display data of the first image frame. At this time, the time difference between the triggering moment of the first synchronization signal for controlling the display panel and the triggering moment of the second synchronization signal for controlling the backlight panel is the generation delay of the local dimming data. Since the generation delay is unavoidable in the display process, in the embodiment of the present invention, the time difference between the driving display timing of the pixel unit row in the display panel and the backlight lighting timing of the corresponding target backlight partition row is shortened to be consistent with the generation delay, thereby ensuring the maximum synchronization between the driving display of the pixel unit row and the backlight lighting of the corresponding target backlight partition row.

[0139] In addition, according to the arrangement of the multiple backlight units on the backlight panel, a target backlight unit is determined among the multiple backlight units, and the target backlight unit may be one or more. When performing backlight control, the multiple backlight partitions corresponding to the currently driven pixel unit row in the target backlight unit are controlled to turn on the backlight at the same time, thereby avoiding the backlight partitions in the target backlight partition row being affected by the different backlight units to which they belong, thereby improving the display performance of the multi-BLU display device.

[0140] In some embodiments, the timing controller 71 may generate local dimming data according to 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 in sequence according to the second display data and in a preset order.

[0141] In a specific implementation, the second image frame can be the previous image frame of the first image frame, or the previous image frame of the first image frame. Of course, the closer the second image frame is to the first image frame, the more accurate the backlight display effect is. For example, in a display scene of a continuous motion picture, the display effect of the motion picture is formed by the continuous display of multiple image frames. Assuming that the fifth image frame in this scene is used as the first image frame in the embodiment of the present invention, the fourth image frame can be used as the second image frame in the embodiment of the present invention, and based on the display data corresponding to the fourth image frame, the local dimming data corresponding to the fifth image frame is predicted and determined.

[0142] Since the local dimming data can be generated based on the historically cached display data (i.e., the second display data), the timing controller 71 can generate the local dimming data within the display period of the previous image frame of the first image frame without occupying the display time of the first image frame. Therefore, there will be no delay in the generation of the local dimming data in this case.

[0143] For ease of description, the following embodiments are described by taking the second image frame as the previous frame of the first image frame as an example:

[0144] Fig.14 Another timing control schematic diagram of a display device provided by an embodiment of the present invention is shown. Fig.14 The structure of the display device shown is Fig.11 The structure of the display device shown in FIG. 1 is the same as that of the display device shown in FIG. 1 , so it will not be described in detail. Fig.11 A structural description of the display device shown.

[0145] like Fig.14 As shown in FIG. 1 , each dimmer 743 belonging to the first backlight sub-row in the backlight unit BLU 11 and the backlight unit BLU 12 will first receive the local dimming data, followed by each dimmer 743 belonging to the second backlight sub-row in the BLU 11 and the BLU 12 receiving the local dimming data, and so on until the end. Therefore, in this case, if Fig.14 As shown, there will also be a transmission delay from the dimming controller 72.

[0146] exist Fig.14 In the display control method shown, since the local dimming data used for backlight control can be determined according to the second display data corresponding to the second image frame, the generation of the local dimming data does not need to occupy the display time of the first image frame. In this way, in the process of displaying the first image frame, the time difference between the drive display of the pixel unit row and the backlight lighting of the corresponding target backlight partition row can be further shortened, and the time difference is shortened to be equal to the backlight lighting delay of the dimmer 743. Since the backlight lighting delay is bound to exist in the process of the dimmer 743 generating the PWM local dimming data for controlling the light-emitting unit 744 according to the local dimming data, and the backlight lighting delay is a very short delay, therefore, the above-mentioned timing control method can achieve the maximum synchronization between the drive display of the pixel unit row and the backlight lighting of the corresponding target backlight partition row, improve the image display effect of the display device, and enhance the display performance of the display device.

[0147] Fig.15 Another timing control schematic diagram of a display device provided by an embodiment of the present invention is shown. Fig.15 As shown, due to Fig.15 The structure of the display device shown is Fig.12 The structure of the display device shown in FIG. 1 is the same as that of the display device shown in FIG. 1 , so it will not be described in detail. Fig.12 A structural description of the display device shown.

[0148] like Fig.15 As shown, first, each dimmer 743 belonging to the first backlight sub-row in the backlight unit BLU 21 and each dimmer 743 belonging to the third backlight sub-row in the backlight unit BLU 22 will receive the local dimming data at the same time; then, each dimmer 743 belonging to the second backlight sub-row in the BLU 21 and each dimmer 743 belonging to the fourth backlight sub-row in the BLU 22 will receive the local dimming data at the same time, and the local dimming data transmission is completed. Therefore, in this case, Fig.15 As shown, there will also be a transmission delay from the dimming controller 72.

[0149] exist Fig.15 In the display control method shown, 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, there is no need to determine the local dimming data in sequence according to the transmission order of the display data, that is, there is no need 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, and 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.

[0150] like Fig.15 As shown, each backlight unit BLU can determine its own corresponding local dimming data, that is, Fig.15 In the embodiment, the first row dimmer 743 in the BLU 21 determines the local dimming data, and the first row dimmer 743 in the BLU 22 determines the local dimming data at the same time, which shortens the generation time of the local dimming data.

[0151] And in this case, the generation of local dimming data does not need to occupy the display time of the first image frame. In this way, during the display of the first image frame, the time difference between the drive display of the pixel unit row and the backlight lighting of its corresponding target backlight partition row can be further shortened to be equal to the backlight lighting delay of the dimmer, thereby achieving maximum synchronization between the drive display of the pixel unit row and the backlight lighting of its corresponding target backlight partition row, thereby achieving a more excellent image display effect on the display device.

[0152] Fig.16Another timing control schematic diagram of a display device provided by an embodiment of the present invention is shown. Fig.16 As shown, due to Fig.16 The structure of the display device shown is Fig.13 The structure of the display device shown in FIG. 1 is the same as that of the display device shown in FIG. 1 , so it will not be described in detail. Fig.13 A structural description of the display device shown.

[0153] like Fig.16 As shown, first, each dimmer 743 belonging to the first backlight sub-row in backlight unit BLU 31 and backlight unit BLU 32, and each dimmer 743 belonging to the third backlight sub-row in backlight unit BLU 33 and backlight unit BLU 34, will receive local dimming data at the same time; then, each dimmer 743 belonging to the second backlight sub-row in BLU 31 and BLU 32, and each dimmer 743 belonging to the fourth backlight sub-row in BLU 33 and BLU 34, will receive local dimming data at the same time, and the local dimming data transmission is completed. Therefore, in this case, Fig.16 As shown, there will also be a transmission delay from the dimming controller 72.

[0154] exist Fig.16 In the display control method shown, 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, there is no need to determine the local dimming data in sequence according to the transmission order of the display data. Each backlight unit BLU can each determine its own corresponding local dimming data.

[0155] like Fig.16 As shown, the first row dimmers 743 in BLU 31, BLU 32, BLU 33 and BLU 34 determine that the local dimming data can be performed simultaneously, which further shortens the generation time of the local dimming data. In this case, the generation of the local dimming data does not need to occupy the display time of the first image frame. In this way, during the display of the first image frame, the time difference between the drive display of the pixel unit row and the backlight lighting of the corresponding target backlight partition row can be further shortened to be equal to the backlight lighting delay of the dimmer, so as to achieve the maximum synchronization between the drive display of the pixel unit row and the backlight lighting of the corresponding target backlight partition row, and effectively improve the image display effect.

[0156] After receiving the local dimming data, the dimmer 743 performs the following operations:

[0157] In some embodiments, when the dimmer 743 recognizes that the backlighting delay has arrived, it generates a second synchronization signal, wherein the time difference between the triggering moment of the second synchronization signal and the triggering moment of the first synchronization signal is equal to the backlighting delay of the dimmer 743 .

[0158] The following combination Figure 14-16 To explain in detail:

[0159] Reference Fig.14 Since both BLU 11 and BLU 12 are used as target backlight units, the backlight lighting delays of the dimmers belonging to one backlight partition row in BLU 11 and BLU 12 are consistent.

[0160] Reference Fig.15 In the first half of the display period of the first image frame, BLU 21 is used as the target backlight unit; and in the second half of the display period of the first image frame, BLU 22 is used as the target backlight unit. Fig.15 As shown, the backlight lighting delay of the first row of dimmers 743 in BLU21 is smaller than the backlight lighting delay of the first row of dimmers 743 in BLU22.

[0161] Reference Fig.16 In the first half of the display period of the first image frame, BLU 31 and BLU 32 are used as target backlight units; and in the second half of the display period of the first image frame, BLU 33 and BLU 34 are used as target backlight units. Fig.16 As shown, the backlight lighting delay of the first row of dimmers 743 in BLU 31 and BLU 32 is smaller than the backlight lighting delay of the first row of dimmers 743 in BLU 33 and BLU 34 .

[0162] It should be noted that in Figure 14-16 In the structure shown, the backlight control method is the same as Figure 11-13 Similar, so no further description is given, and reference can be made to the above embodiment regarding Figure 11-13 Related description of backlight control of backlight panel 74.

[0163] In addition, the above embodiments are all described by taking the case where the backlight partition row includes one row of backlight partitions as an example. In practical applications, the backlight partition row may include multiple rows of backlight partitions, and the embodiments of the present invention do not impose any restrictions on this. Of course, when the backlight partition row includes one row of backlight partitions, its display effect is better than the display effect when the backlight partition row includes multiple rows of backlight partitions.

[0164] In the above embodiment, the local dimming data for controlling the backlight brightness can be generated by the second display data of the second image frame. Since the second image frame is an image frame before the first image frame, the local dimming data can be obtained from the backlight panel at the triggering moment of the first synchronization signal. In this case, the time difference between the triggering moment of the first synchronization signal for controlling the display panel and the triggering moment of the second synchronization signal for controlling the backlight panel is the backlight lighting delay of the dimmer in the backlight panel. Since the backlight lighting delay is necessary for the dimmer to process the local dimming data, the time difference between the driving display timing of the pixel unit row in the display panel and the backlight lighting timing of the corresponding target backlight partition row is shortened to be consistent with the backlight lighting delay, thereby ensuring the maximum synchronization between the driving display of the pixel unit row and the backlight lighting of the corresponding target backlight partition row, improving the image display effect of the display device, and enhancing the display performance of the display device.

[0165] Based on the same concept, an embodiment of the present invention also provides a display device, which is applicable to the display control method provided in any of the above embodiments. Since the display device is the display device in the display control method in the embodiment of the present invention, and the principle of solving the problem by the display device 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 repeated.

[0166] like Figure 7 As shown, the display device 70 includes a display panel 73 and a backlight panel 74. The display panel 73 is provided with a plurality of pixel unit rows 732. The backlight panel 74 is provided with a plurality of backlight units 741. One backlight unit 741 includes a plurality of backlight partitions 742, wherein:

[0167] 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;

[0168] The backlight panel 74 is used to control the target backlight partition row 745 to turn on the backlight according to the local dimming data and the arrangement of the backlight units 741 on the backlight panel 74 under the control of the second synchronization signal;

[0169] The triggering time of the second synchronization signal is not earlier than the triggering time of the first synchronization signal.

[0170] In some embodiments, the display device 70 further includes a timing controller 71 and a dimming controller 72, wherein:

[0171] The timing controller 71 is connected to the display panel 73, the dimming controller 72 is connected to the timing controller 71 and the backlight panel 74 respectively, and the backlight partition 742 includes a dimmer 743 and a light emitting unit 744 connected to the dimmer 743;

[0172] The timing controller 71 is used to generate local dimming data according to the first display data, and transmit the local dimming data to the dimmer 743 through the dimming controller 72, and

[0173] Generate a first synchronization signal, and send the first synchronization signal to the display panel 73;

[0174] The dimmer 743 is used to generate a second synchronization signal, and under the control of the second synchronization signal, generates a backlight control signal according to the local dimming data and the arrangement of the backlight unit 741 on the backlight panel 74, so as to control the light-emitting unit 744 connected to the dimmer 743 to turn on the backlight;

[0175] The time difference between the time when the dimmer 743 generates the second synchronization signal and the time when the timing controller 71 generates the first synchronization signal is determined according to the generation delay caused by the timing controller 71 generating the local dimming data.

[0176] 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;

[0177] The dimmer 743 is specifically configured to generate a second synchronization signal at the end time of generating the local dimming data.

[0178] In some embodiments, the display device 70 further includes a timing controller 71 and a dimming controller 72, wherein:

[0179] The timing controller 71 is connected to the display panel 73, the dimming controller 72 is connected to the timing controller 71 and the backlight panel 74 respectively, and the backlight partition 742 includes a dimmer 743 and a light emitting unit 744 connected to the dimmer 743;

[0180] The timing controller 71 is used to generate local dimming data according to the second display data, and send the local dimming data to the dimmer 743 through the dimming controller 72, and

[0181] Generate a first synchronization signal, and send the first synchronization signal to the display panel 73, wherein the second display data is display data corresponding to a second image frame, and the second image frame is located before the first image frame;

[0182] The dimmer 743 is used to generate a second synchronization signal, and under the control of the second synchronization signal, generates a backlight control signal according to the local dimming data and the arrangement of the backlight unit 741 on the backlight panel 74, so as to control the light-emitting unit 744 connected to the dimmer 743 to turn on the backlight;

[0183] The time difference between the time when the dimmer 743 generates the second synchronization signal and the time when the timing controller 71 generates the first synchronization signal is determined according to the backlight lighting delay of the dimmer 743 .

[0184] 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 row 742 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;

[0185] The dimmer 743 is specifically used to: generate a second synchronization signal when the backlight lighting delay of the dimmer 743 arrives;

[0186] The end time of generating the local dimming data is consistent with the time when the timing controller 71 generates the first synchronization signal.

[0187] 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;

[0188] The dimmer 743 is specifically used to: generate a backlight control signal according to 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;

[0189] The backlight partitions 742 included in the target backlight partition row 745 belong to a 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 .

[0190] In some embodiments, the backlight units 741 are arranged on the backlight panel 74 in any one of a row direction, a column direction, and an array direction.

[0191] If the arrangement of the plurality of backlight units 741 on the backlight panel 74 is arranged along the column direction, the target backlight unit includes one;

[0192] If the arrangement of the plurality of backlight units 741 on the backlight panel 74 is along a row direction or in an array, the target backlight unit includes a plurality of backlight units.

[0193] It should be noted that other essential components of the display device are well understood by those skilled in the art and will not be described in detail herein and should not be construed as limiting the present invention.

[0194] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0195] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A display control method, characterized in that: include: Under the control of the first synchronization signal, driving the pixel unit rows on the display panel according to the first display data and in a preset order, wherein the first display data is display data corresponding to the first image frame; Under the control of the second synchronization signal, according to the local dimming data and the arrangement of the backlight units on the backlight panel, the target backlight partition row on the backlight panel is controlled to turn on the backlight, wherein the target backlight partition row is composed of a plurality of backlight partitions corresponding to the driven pixel unit row, each backlight partition in the target backlight partition row belongs to at least one of the backlight units, and the triggering time of the second synchronization signal is not earlier than the triggering time of the first synchronization signal; The method of controlling the target backlight sub-row on the backlight panel to turn on the backlight according to the local dimming data and the arrangement of the backlight units on the backlight panel includes: Determining a target backlight unit among a plurality of backlight units provided on the backlight panel according to an arrangement of the backlight units on the backlight panel; According to the local dimming data corresponding to the target backlight partition row, each backlight partition in the target backlight unit belonging to the target backlight partition row is controlled to turn on the backlight.

2. The method according to claim 1, characterized in that If the local dimming data is generated according to 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 according to the generation delay of the local dimming data.

3. The method according to claim 2, characterized in that The local dimming data is generated in the following manner: According to the first display data and in accordance with the preset order, sequentially generate local dimming data corresponding to the target backlight partition rows; The start time of generating the local dimming data is consistent with the triggering time of the first synchronization signal, and the end time of generating the local dimming data is consistent with the triggering time of the second synchronization signal.

4. The method according to claim 1, characterized in that If the local dimming data is generated according to the second display data, the time difference between the triggering moment of the second synchronization signal and the triggering moment of the first synchronization signal is determined according to the backlight lighting delay of the dimmer; The second display data is display data corresponding to a second image frame, the second image frame is located before the first image frame, and the backlight partition includes the dimmer and a light-emitting unit electrically connected to the dimmer.

5. The method according to claim 4, characterized in that The local dimming data is generated in the following manner: For any backlight unit on the backlight panel, based on the second display data and in accordance with the preset order, sequentially generate local dimming data corresponding to each backlight partition row in the backlight unit; The end time of generating the local dimming data is consistent with the triggering time of the first synchronization signal.

6. The method according to any one of claims 1 to 5, characterized in that The backlight units are arranged on the backlight panel in any one of a row direction, a column direction, and an array direction; If the arrangement of the plurality of backlight units on the backlight panel is along a column direction, the target backlight unit includes one; If the plurality of backlight units on the backlight panel are arranged along a row direction or in an array, the target backlight unit includes a plurality of backlight units.

7. A display device, characterized in that: It includes a display panel and a backlight panel, wherein the display panel is provided with a plurality of pixel unit rows, and the backlight panel is provided with a plurality of backlight units, and one backlight unit includes a plurality of backlight partitions, wherein: The display panel is used to drive the pixel unit rows according to first display data and in a preset order under the control of a first synchronization signal, wherein the first display data is display data corresponding to a first image frame; The backlight panel is used to control a target backlight partition row to turn on the backlight according to the local dimming data and the arrangement of the backlight units on the backlight panel under the control of a second synchronization signal, wherein the target backlight partition row is composed of a plurality of backlight partitions corresponding to the driven pixel unit row, each backlight partition in the target backlight partition row belongs to at least one of the backlight units, and a triggering time of the second synchronization signal is not earlier than a triggering time of the first synchronization signal; The backlight panel includes a dimmer and a light-emitting unit connected to the dimmer, and the dimmer is specifically used to: generate a backlight control signal according to 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 backlight partitions included in the target backlight partition row belong to a target backlight unit, and the target backlight unit is determined from a plurality of backlight units arranged on the backlight panel according to an arrangement of the backlight units on the backlight panel.

8. The display device according to claim 7, characterized in that: 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 the timing controller and the backlight panel respectively; The timing controller is used to generate the local dimming data according to the first display data, and transmit the local dimming data to the dimmer through the dimming controller, and generating the first synchronization signal, and sending 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, generates 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 unit connected to the dimmer to turn on the backlight; The time difference between the time when the dimmer generates the second synchronization signal and the time when the timing controller generates the first synchronization signal is determined according to the generation delay generated by the timing controller generating the local dimming data.

9. The display device according to claim 8, wherein: The timing controller is specifically used to: generate local dimming data corresponding to the target backlight partition row in sequence 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 generating the local dimming data is consistent with the time when the timing controller generates the first synchronization signal; The dimmer is specifically configured to generate the second synchronization signal at the end time of generating the local dimming data.

10. The display device according to claim 7, wherein: It also includes a timing controller and a dimming controller, wherein: The timing controller is connected to the display panel, the dimming controller is connected to the timing controller and the backlight panel respectively, and the backlight partition includes a dimmer and a light-emitting unit connected to the dimmer; The timing controller is used to generate the local dimming data according to the second display data, and send the local dimming data to the dimmer through the dimming controller, and generating the first synchronization signal, and sending the first synchronization signal to the display panel, wherein the second display data is display data corresponding to a 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, generates 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 unit connected to the dimmer to turn on the backlight; The time difference between the time when the dimmer generates the second synchronization signal and the time when the timing controller generates the first synchronization signal is determined according to the backlight lighting delay of the dimmer.

11. The display device according to claim 10, 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 lighting delay of the dimmer arrives; The end time of generating the local dimming data is consistent with the time when the timing controller generates the first synchronization signal.

12. The display device according to any one of claims 7 to 11, characterized in that: The backlight units are arranged on the backlight panel in any one of a row direction, a column direction, and an array direction; If the arrangement of the plurality of backlight units on the backlight panel is along a column direction, the target backlight unit includes one; If the plurality of backlight units on the backlight panel are arranged along a row direction or in an array, the target backlight unit includes a plurality of backlight units.

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