Black insertion processing method, backlight panel and backlight system

Abstract

The present invention discloses a black insertion processing method, a backlight panel and a backlight system, the method comprising: within a display cycle of a frame of an image, for any backlight source group, a target backlight driver parses a received dimming instruction to obtain a delay duration and black insertion data corresponding to the backlight source group; when the delay duration is reached, the target backlight driver generates a backlight control signal based on the black insertion data to drive the backlight source group to turn on the backlight; when the backlight on duration is reached, the target backlight driver controls the backlight source group to turn off the backlight, and generates a timing signal based on the black insertion data, and determines the end time of black insertion according to the timing signal. The target backlight driver flexibly sets and accurately controls the black insertion duration through the black insertion data to reduce the poor display phenomenon in the display picture; and by accurately controlling the time when the backlight source group turns on the backlight, the backlight source group and the corresponding liquid crystal pixel row are synchronously lit, thereby improving the overall display brightness and the display effect.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a black insertion processing method, a backlight panel and a backlight system. Background Art

[0002] In display products, each display screen is composed of a series of static image frames played at a specific rate. When the display screen involves fast-moving content, the human eye has a persistence effect, which will cause the user's image to appear blurry, seriously affecting the user's visual experience.

[0003] To solve the above problems, black frame insertion (BFI) technology has been introduced into display products to improve the display effect. The principle of BFI technology is to insert a black frame between two consecutive image frames, and use the short duration of the black frame to shorten the dwell time between frames, making the moving objects sharper visually, thereby reducing motion blur and improving image clarity and motion performance.

[0004] The current implementation of BFI technology adopts the method of inserting a black frame after each image frame, that is, the display device displays in the order of "image frame-black frame-image frame-black frame-image frame..." However, in actual applications, the above BFI implementation method will cause the display screen to have problems such as reduced brightness, jitter, flickering, blurring, and afterimage, affecting the display effect. Summary of the invention

[0005] The present invention provides a black insertion processing method, a backlight panel and a backlight system, which are used to solve the problem that the current BFI implementation method may cause poor display phenomena such as reduced brightness, jitter, flicker, blur, afterimage and the like on the display screen, thereby affecting the display effect.

[0006] In a first aspect, an embodiment of the present invention provides a black insertion processing method, which is applied to a backlight panel, wherein the backlight panel includes a backlight driver and a plurality of backlight source groups, wherein a backlight source group includes a plurality of backlight sources arranged along a row direction, and the method includes:

[0007] In a display cycle of a frame of image, for any backlight source group, the target backlight driver parses the received dimming instruction to obtain the delay duration and black insertion data corresponding to the backlight source group, wherein the dimming instruction is determined by the backlight controller according to the received dimming data signal, and the target backlight driver is the backlight driver corresponding to the backlight source group;

[0008] When the delay time is reached, the target backlight driver generates a backlight control signal based on the black insertion data to drive the backlight source group to turn on the backlight;

[0009] When the backlight on time is reached, the target backlight driver controls the backlight source group to turn off the backlight, generates a timing signal based on the black insertion data, and determines the black insertion end time according to the timing signal.

[0010] In the black insertion processing method provided by the embodiment of the present invention, the target backlight driver parses the dimming instruction to obtain the black insertion data corresponding to the backlight source group, and when the backlight on time is reached, controls the backlight source group to turn off the backlight and starts the black insertion processing. At the same time, a timing signal is generated according to the black insertion data, and the end time of the black insertion processing is determined according to the timing signal, that is, the target backlight driver inserts black one by one according to the backlight source group, and flexibly controls the black insertion time of each backlight source group, so as to reduce the display defects such as jitter, flicker, blur, afterimage, etc. in the display picture; in addition, the target backlight driver controls the time when the backlight source group turns on the backlight according to the delay time determined by the dimming instruction, so that the time when the backlight source group turns on the backlight is almost synchronized with the liquid crystal lighting time of the liquid crystal pixel row corresponding to the backlight source group, so that the backlight emitted by the backlight source can pass through the corresponding liquid crystal molecules more for imaging display, thereby reducing the loss of light energy, increasing the overall brightness of the display, and improving the display effect.

[0011] In an optional embodiment, the black insertion data includes a first frequency value, and the first frequency value is obtained by dividing a preset initial frequency value;

[0012] When the delay time is reached, the target backlight driver generates a backlight control signal based on the black insertion data to drive the backlight source group to turn on the backlight, including:

[0013] When the delay time is reached, for any backlight source in the backlight source group, the target backlight driver generates a backlight control signal corresponding to the backlight source based on the first frequency value included in the black insertion data and the brightness data corresponding to the backlight source, wherein the frequency value of the backlight control signal is the first frequency value;

[0014] Under the control of the backlight control signal, the target backlight driver drives the backlight sources in the backlight source group to turn on the backlight;

[0015] Among them, the delay duration is determined according to the liquid crystal response duration of the target liquid crystal pixel row, the target liquid crystal pixel row is the pixel row corresponding to the backlight source group on the display panel, and the brightness data corresponding to the backlight source is obtained after parsing the dimming instruction.

[0016] In the above method, when the delay time is reached, the target backlight driver generates a backlight brightness control signal corresponding to each backlight source according to the black insertion data and the brightness data corresponding to each backlight source. Under the control of the backlight brightness control signal, the corresponding backlight source emits the backlight corresponding to its brightness data, thereby realizing the backlight on control of the backlight source group. Since the delay time is determined according to the dimming instruction, the delay time is used to control the backlight on of the backlight source group. Therefore, by adjusting the delay time, the backlight on time of the backlight source group can be realized, which is almost synchronized with the liquid crystal lighting time of the liquid crystal pixel row corresponding to the backlight source group, thereby reducing the loss of light energy, improving the overall display brightness, and improving the display effect.

[0017] In an optional embodiment, when the backlight on time is reached, the target backlight driver controls the backlight source group to turn off the backlight, including:

[0018] When the backlight on time is reached, the target backlight driver stops sending the backlight control signal to the backlight sources in the backlight source group, wherein the backlight on time is determined according to the liquid crystal lighting time of the target liquid crystal pixel row.

[0019] In the above method, when the backlight on time is reached, the target backlight driver stops sending the backlight control signal to the backlight in the backlight source group, so that the backlight source group turns off the backlight and starts the black insertion process. Since the backlight on time is determined according to the liquid crystal lighting time of the liquid crystal pixel row corresponding to the backlight source group, it is possible to start the black insertion process for the backlight source group at the moment when the liquid crystal molecules in the liquid crystal pixel row corresponding to the backlight source group start to flip, thereby avoiding the time of the liquid crystal molecule flipping process that should not be displayed, so as to improve the display effect.

[0020] In an optional embodiment, the black insertion data further includes a second frequency value and a first quantity, and the second frequency value is obtained by dividing the initial frequency value;

[0021] The target backlight driver generates a timing signal based on the black insertion data, and determines a black insertion end time according to the timing signal, including:

[0022] The target backlight driver uses the second frequency value included in the black insertion data as the frequency value of the timing signal;

[0023] The target backlight driver identifies the number of the timing signals, and uses the end time of the first number of the timing signals as the black insertion end time.

[0024] In the above method, when the target backlight driver controls the backlight source group to turn off the backlight and starts the black insertion process, a timing signal with a second frequency value is generated according to the black insertion data, and based on the frequency value and number of the timing signal, the black insertion count is performed to determine the end time of the black insertion process, so that the black insertion time of each backlight source group can be flexibly controlled, thereby effectively reducing the display defects in the display screen and improving the display effect.

[0025] In an optional embodiment, the dimming instruction includes the black insertion data and brightness related information;

[0026] The target backlight driver parses the received dimming instruction to obtain the delay duration and black insertion data corresponding to the backlight source group, including:

[0027] The target backlight driver acquires the black insertion data corresponding to the backlight source group from the dimming instruction;

[0028] The target backlight driver selects a delay time corresponding to the address information from the brightness related information included in the dimming instruction according to its own address information, and uses the selected delay time as the delay time corresponding to the backlight source group.

[0029] In the above method, the target backlight driver parses the dimming instruction, obtains the black insertion data in the dimming instruction, and obtains the delay duration corresponding to the backlight source group according to the address information of the backlight driver corresponding to the backlight source group, so that the duration of the black insertion processing can be controlled according to the black insertion data obtained by the analysis, and the backlight lighting time of the backlight source group can be controlled according to the delay duration, thereby reducing the delay, increasing the display brightness, and improving the display effect.

[0030] In an optional embodiment, the time difference between the end time of the delay time corresponding to the backlight source group and the end time of the liquid crystal response time of the target liquid crystal pixel row is within a preset first time difference threshold range;

[0031] The time difference between the backlight on time corresponding to the backlight source group and the liquid crystal lighting time of the target liquid crystal pixel row is within a preset second time difference threshold range;

[0032] Among them, the target liquid crystal pixel row is the pixel row on the display panel corresponding to the backlight source group, the liquid crystal lighting duration is the duration for the liquid crystal molecules to maintain the target state, and the target state is the state of the liquid crystal molecules corresponding to the end moment of the liquid crystal response duration.

[0033] The above method makes the time difference between the end time of the delay duration corresponding to the backlight source group and the end time of the liquid crystal response duration of the liquid crystal pixel row corresponding to the backlight source not exceed a preset time difference threshold range, so that the backlight turn-on time of the backlight source group and the liquid crystal lighting time of the liquid crystal pixel row corresponding to the backlight source group are nearly synchronized, thereby reducing delays, reducing light energy loss, increasing display brightness, and improving display effects.

[0034] In a second aspect, an embodiment of the present invention provides a backlight panel, comprising a plurality of backlight drivers and a plurality of backlight source groups; one of the backlight source groups comprises a plurality of backlight sources arranged along a row direction; the plurality of backlight drivers are arranged in an array, and one of the backlight drivers is electrically connected to at least one of the backlight sources, wherein:

[0035] For any backlight source group, the backlight driver corresponding to the backlight source group is used to perform the following operations:

[0036] Within a display cycle of a frame of image, the received dimming instruction is parsed to obtain a delay duration and black insertion data corresponding to the backlight source group, wherein the dimming instruction is determined by the backlight controller according to the received dimming data signal;

[0037] When the delay time is reached, a backlight control signal is generated based on the black insertion data to drive the backlight source group to turn on the backlight;

[0038] When the backlight on time is reached, the backlight source group is controlled to turn off the backlight, and a timing signal is generated based on the black insertion data, and the black insertion end time is determined according to the timing signal.

[0039] In an optional embodiment, the backlight driver includes a logic processing module and a driving module, wherein:

[0040] The logic processing module is electrically connected to the driving module, the driving module includes at least one driving channel, and one driving channel is electrically connected to one backlight source;

[0041] Wherein, for the backlight driver corresponding to any backlight source in the backlight source group:

[0042] The logic processing module is used to identify the delay time and generate a first indication signal when it is identified that the delay time has been reached, wherein the delay time is determined according to the liquid crystal response time of a target liquid crystal pixel row, the target liquid crystal pixel row is a pixel row on a display panel corresponding to the backlight source group, and the display panel is arranged opposite to the backlight panel;

[0043] The driving module is used to generate a backlight control signal corresponding to the backlight source based on a first frequency value and brightness data corresponding to the backlight source under the control of the first indication signal, and output the backlight control signal through a driving channel electrically connected to the backlight source, wherein the black insertion data includes the first frequency value, the first frequency value is obtained by frequency-dividing the initial frequency value, the frequency value of the backlight control signal is the first frequency value, and the brightness data corresponding to the backlight source is obtained after parsing the dimming instruction;

[0044] The backlight source is used to receive the backlight control signal and turn on the backlight under the control of the backlight control signal.

[0045] In an optional embodiment, the logic processing module is further used to identify the backlight on time length, and generate a second indication signal when it is identified that the backlight on time length has been reached;

[0046] The driving module is further configured to stop outputting the backlight control signal under the control of the second indication signal;

[0047] The backlight source is further used to turn off the backlight when the backlight control signal is not received;

[0048] The backlight on time is determined according to the liquid crystal lighting time of the target liquid crystal pixel row.

[0049] In an optional embodiment, the backlight driver further includes an oscillator module, and the oscillator module is electrically connected to the logic processing module;

[0050] The oscillator module is used to generate an initial clock signal having the initial frequency value;

[0051] The logic processing module is further used to perform frequency division processing on the initial clock signal based on the second frequency value to obtain the timing signal; identify the number of the timing signals, and use the end time of the first number of the timing signals as the black insertion end time;

[0052] The black insertion data further includes the second frequency value and the first quantity, and the frequency value of the timing signal is the second frequency value.

[0053] In an optional embodiment, the backlight driver further includes an input / output module and a register module, wherein:

[0054] The input-output module is electrically connected to the logic processing module, and the register module is electrically connected to the logic processing module;

[0055] The input / output module is configured to receive the dimming instruction and obtain the black insertion data from the dimming instruction; select a delay time corresponding to the address information from the brightness related information according to the address information of the backlight driver itself, and use the selected delay time as the delay time corresponding to the backlight source group, wherein the dimming instruction includes the black insertion data and the brightness related information;

[0056] The register module is used to cache the black insertion data and the delay duration;

[0057] The logic processing module is further used to obtain the black insertion data and the delay time from the register module.

[0058] In an optional embodiment, a first time difference between an end time of the delay duration corresponding to the backlight source group and an end time of the liquid crystal response duration of the target liquid crystal pixel row is within a preset first time difference threshold range;

[0059] The time difference between the backlight on time corresponding to the backlight source group and the liquid crystal lighting time of the target liquid crystal pixel row is within a preset second time difference threshold range;

[0060] Among them, the target liquid crystal pixel row is the pixel row on the display panel corresponding to the backlight source group, the liquid crystal lighting duration is the duration for the liquid crystal molecules to maintain the target state, and the target state is the state of the liquid crystal molecules corresponding to the end moment of the liquid crystal response duration.

[0061] In a third aspect, an embodiment of the present invention provides a backlight system, comprising a backlight controller and a backlight panel as described in any one of the embodiments of the second aspect above;

[0062] The backlight controller is electrically connected to a plurality of backlight drivers on the backlight panel respectively;

[0063] The backlight controller is used to generate a dimming instruction according to the received dimming data signal, and send the dimming instruction to the backlight driver.

[0064] For the technical effects that may be achieved by the backlight panel disclosed in the second aspect and the backlight system disclosed in the third aspect, please refer to the technical effects that may be achieved by the first aspect or various possible solutions in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] 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.

[0066] Figure 1 A schematic diagram of an application scenario of a black insertion processing method provided by an embodiment of the present invention;

[0067] Figure 2 A schematic structural diagram of a backlight panel provided by an embodiment of the present invention;

[0068] Figure 3 A schematic diagram of the structure of a display device provided by an embodiment of the present invention;

[0069] Figure 4 A schematic structural diagram of a backlight system provided by an embodiment of the present invention;

[0070] Figure 5 A schematic diagram of a workflow of a black insertion processing method provided by an embodiment of the present invention;

[0071] Figure 6 A schematic diagram of the structure of a dimming instruction provided by an embodiment of the present invention;

[0072] Figure 7 A schematic diagram of the internal structure of a backlight driver provided by an embodiment of the present invention;

[0073] Figure 8 A schematic diagram of a writing sequence of pixel data in a display panel provided by an embodiment of the present invention;

[0074] Fig. 9 A schematic diagram of the lighting duration of an upper liquid crystal pixel row in a display panel provided by an embodiment of the present invention;

[0075] Fig.10 A schematic diagram of display timing of a display device provided by an embodiment of the present invention;

[0076] Fig.11 A schematic diagram of the working timing of a backlight source in a backlight source group provided by an embodiment of the present invention;

[0077] Fig.12 A waveform diagram of a timing signal within a black insertion duration provided by an embodiment of the present invention;

[0078] Fig.13 A schematic diagram of a complete workflow of a black insertion processing method provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0079] 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.

[0080] 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.

[0081] As mentioned above, current display products usually introduce black insertion technology, which inserts a black frame between two consecutive image frames to make moving objects visually sharper, thereby reducing motion blur and improving image clarity and motion performance. Therefore, black insertion technology is widely used in e-sports, movie playback, and other application scenarios that require high-quality display. By introducing black insertion technology, the clarity and details of the picture can be improved, making the user's viewing experience more realistic and smooth.

[0082] At present, there are two main ways to implement black insertion technology:

[0083] (1) Hardware implementation: The brightness and lighting duration of the backlight source are controlled by a pulse signal to insert a black frame after each image frame.

[0084] (2) Software implementation: Through the corresponding BFI software algorithm, a black frame is inserted after each image frame to simulate the hardware black insertion effect.

[0085] However, no matter which black insertion technology is used, the following problems will occur:

[0086] (1) Brightness loss: Since a black frame is inserted after each image frame, the brightness of the display screen may be reduced, affecting the user's viewing experience.

[0087] (2) Jitter or flicker: The insertion of black frames will cause rapid changes in the content displayed on the display screen, which can easily cause visual discomfort to users, such as jitter or flickering of the display screen. This problem is particularly prominent on display products with low refresh rates.

[0088] (3) Image blur or afterimage: The application of black insertion technology will cause the dynamic response time of the display to change, which will increase the time required for pixel state switching. When the display switches from one image frame to the next, the pixels do not have enough time to switch to the new state, which will cause the image to blur. In addition, if the pixel state is not switched in time, the previous image frame will affect the current image frame, causing a afterimage effect.

[0089] Based on this, the embodiments of the present invention provide a black insertion processing method, a backlight panel and a backlight system to reduce display defects such as jitter, flicker, blur, afterimage, etc. in the display image, increase the overall display brightness, and improve the display effect.

[0090] 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.

[0091] The following describes the application scenario of the black insertion processing method provided by the embodiment of the present invention in conjunction with the accompanying drawings:

[0092] Figure 1 A structural schematic diagram showing an application scenario of the black insertion processing method provided by an embodiment of the present invention.

[0093] The black insertion processing method provided by the embodiment of the present invention can be applied in the application scenario of computer display. Figure 1 As shown, the application scenario includes a display 10 and a server 20, and the display 10 and the server 20 are communicatively connected.

[0094] In a specific implementation, the server 20 sends multiple image frame data to the display 10. The display 10 displays the image frame based on the received image frame data using the black insertion processing method provided in the embodiment of the present invention, thereby reducing jitter, flicker, blur, afterimage and other display defects in the display screen, improving the overall display brightness, improving the display effect of the display 10, and enhancing the user's visual experience.

[0095] Of course, the device provided in the embodiment of the present invention is not limited to Figure 1 The application scenarios shown in the figure can also be used in other possible application scenarios, such as televisions, laptop computers, etc., which are not limited in the embodiments of the present invention. Figure 1The functions that can be realized by each part of the application scenario shown will be described in subsequent embodiments, and will not be described in detail here.

[0096] After introducing the application scenarios of the embodiments of the present invention, the preferred implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In addition, the embodiments of the present invention and the features in the embodiments may be combined with each other if there is no conflict.

[0097] The black insertion processing method provided by the embodiment of the present invention is specifically introduced below with reference to the accompanying drawings:

[0098] The black insertion processing method provided in the embodiment of the present invention is applied to a backlight panel. Therefore, the structure of the backlight panel provided in the embodiment of the present invention is firstly specifically introduced:

[0099] Figure 2 FIG. 2 shows a schematic diagram of the structure of a backlight panel provided by an embodiment of the present invention. Figure 2 As shown, the backlight panel 200 includes a plurality of backlight drivers 210 and a plurality of backlight source groups 220, wherein one backlight source group 220 includes a plurality of backlight sources 2201 arranged along a row direction; the plurality of backlight drivers 210 are arranged in an array, and one backlight driver 210 is electrically connected to at least one backlight source 2201 ( Figure 2 2. In the figure, a backlight driver 210 is electrically connected to two backlight sources 2201 as an example).

[0100] It should be noted that the backlight source 2201 in the embodiment of the present invention can adopt sub-millimeter light emitting diodes (English: Mini Light Emitting Diode, abbreviated as: Mini LED), micro light emitting diodes (English: Micro Light Emitting Diode, abbreviated as: Micro LED), etc. The embodiment of the present invention does not limit the type of the backlight source 2201.

[0101] In some embodiments, the backlight panel 200 may be disposed in a display device. Figure 3 A schematic diagram of the structure of a display device provided by an embodiment of the present invention is shown. Figure 3 As shown, the display device 300 includes a main processor 310, a timing controller 320, a display panel 330, a backlight controller 340 and a backlight panel 200, wherein:

[0102] The display panel 330 includes a pixel array composed of liquid crystal molecules, data lines and scan lines (not shown in the figure) connected to the pixel array, and the pixel array can be divided into a plurality of liquid crystal pixel rows, and a liquid crystal pixel row includes a plurality of liquid crystal pixels arranged along the row direction. The display panel 330 is arranged opposite to the backlight panel 200, and the display panel 330 is located on the light emitting side of the backlight panel 200; a backlight source group 220 on the backlight panel 200 corresponds to at least one liquid crystal pixel row on the display panel 330.

[0103] The main processor 310 is electrically connected to the timing controller 320 and the backlight controller 340 respectively. The timing controller 320 is electrically connected to the backlight controller 340 and the data lines and scan lines in the display panel 330 respectively. The backlight controller 340 is electrically connected to the backlight driver 210 in the backlight panel 200 .

[0104] Figure 4 FIG. 1 is a schematic diagram showing a connection relationship between a backlight controller and a backlight panel provided by an embodiment of the present invention. Figure 4 As shown, since the multiple backlight drivers 210 on the backlight panel 200 are arranged in an array, any column of the backlight drivers 210 is electrically connected to the backlight controller 340 in a serial manner, and the backlight controller 340 adopts a parallel control method for each column of the backlight drivers 210 connected in series. In addition, for each series of backlight drivers 210, each of the backlight drivers 210 has address information, and along the first direction, the address information of each backlight driver 210 increases step by step, wherein the first direction is the transmission direction of the data stream.

[0105] For example, taking the first column of backlight drivers 210 as an example, assuming that there are N backlight drivers connected in series in the first column, the address information of the backlight driver 210 closest to the backlight controller 340 is 0, and the address information of the next-level backlight driver 210 is 1, and so on. The address information of the backlight driver 210 farthest from the backlight controller 340 is N-1.

[0106] In a specific implementation, the main processor 310 sends the pixel data signals included in the image frame to be displayed to the timing controller 320 and the backlight controller 340. In a specific implementation, the main processor 310 can be a system on chip (SoC) or other electronic devices that can output image data, and the embodiment of the present invention does not impose any limitation on this.

[0107] After receiving the pixel data signal, the timing controller 320 transmits it to the subsequent display panel 330, and drives the data line and the scan line according to the display timing to write the pixel data to the liquid crystal pixel of the display panel 330. On the other hand, the pixel data signal is processed to generate a dimming data signal, and the obtained dimming data signal is sent to the backlight controller 340, wherein the dimming data signal can be an LD (high level active) signal. In a specific implementation, the timing controller 320 can use a device with a driving control function, such as a timing controller (English: Timing Controller, abbreviated as: TCON), a screen driving circuit, etc.

[0108] Of course, in some embodiments, the main processor 310 may also send the pixel data signals included in the image frame to be displayed to the timing controller 320, process the pixel data signals to obtain the dimming data signals, and send the pixel data signals and the obtained dimming data signals to the backlight controller 340. In practical applications, it can be flexibly set according to business needs.

[0109] After receiving the dimming data signal, the backlight controller 340 processes the dimming data signal, generates a dimming instruction, and sends the dimming instruction to the backlight driver 210 of the backlight panel 200. In a specific implementation, the backlight controller 340 can be a backlight controller (English: Backlight Controller, abbreviated: BCON).

[0110] Based on Figure 4 For the sake of convenience, the structure shown in the figure defines multiple backlight controllers 340 connected in series in the first direction as a first-stage backlight controller 340, a second-stage backlight controller 340, a third-stage backlight controller 340, and so on. Figure 4 The backlight controllers 340 in a row closest to the backlight controller 340 are all first-level backlight controllers 340 .

[0111] In a specific implementation, the backlight controller 340 processes the dimming data signal, generates a dimming instruction, and sends the dimming instruction in parallel to each first-level backlight driver 210. The first-level backlight driver 210 parses and processes the dimming instruction, obtains the relevant data corresponding to the backlight source electrically connected to itself, and then passes the dimming instruction to each second-level backlight driver 210. In the same way, it is passed to each backlight driver 210 step by step along the first direction until the end.

[0112] After receiving the dimming instruction, the backlight driver 210 executes the workflow of the black insertion method provided in the embodiment of the present invention. Figure 2 to Figure 4The hardware structure shown in the figure specifically introduces the workflow of the black insertion method provided by the embodiment of the present invention:

[0113] Figure 5 FIG. 2 shows a schematic diagram of a workflow of a black insertion processing method provided by an embodiment of the present invention. Figure 5 As shown, the black insertion processing method specifically includes the following steps:

[0114] Step S501, within the display cycle of a frame of image, for any backlight source group, the target backlight driver parses the received dimming instruction to obtain the delay duration and black insertion data corresponding to the backlight source group, wherein the dimming instruction is determined by the backlight controller according to the received dimming data signal, and the target backlight driver is the backlight driver corresponding to the backlight source group.

[0115] In some embodiments, Figure 6 As shown, the dimming command may consist of a frame header, a CMD function command, black insertion data, brightness related information, and return information, where:

[0116] The frame header includes an indicator mark, and different indicator marks can be used to distinguish different image frame data. The backlight controller 340 and the backlight driver 210 can determine the starting position of the image frame according to the indicator mark included in the frame header.

[0117] The CMD function instruction includes multiple sub-instructions for indicating the opening and closing of different functions. In a specific implementation, the CMD function instruction may include a delay function sub-instruction, a voltage fast feedback function sub-instruction, a black insertion function sub-instruction, an open circuit function sub-instruction, a short circuit function sub-instruction, etc. The number of bits (English: bit) occupied by each sub-instruction can be a preset fixed value, for example, 8bit, 16bit, etc., and can also be flexibly set according to actual business needs, and the embodiment of the present invention does not impose any restrictions on this.

[0118] The black insertion data includes a first frequency value, a second frequency value and a first quantity; the first frequency value is used to characterize the frequency value of the backlight control signal for driving the backlight source 2201 to emit light in the normal display stage; the second frequency value is used to characterize the frequency value of the timing signal for determining the black insertion duration in the black insertion display stage; the first quantity is used to characterize the number of timing signals.

[0119] The brightness related information includes address information (addr0 to addr(N-1)), brightness data (a0 to a(N-1)) and delay time (del_t0 to del_t(N-1)), wherein the brightness related information includes multiple information groups, one information group includes one address information, and brightness data and delay time corresponding to the address information. For example, the first information group includes address information addr0, brightness data a0 and delay time del_t0. In addition, the address information (addr0 to addr(N-1)) corresponds one to one to the address information of the N backlight drivers 210 connected in series.

[0120] In a specific implementation, the brightness data may include current value, amplitude and duty cycle data, etc., and the backlight control signal may be a pulse width modulation (English: Pulse-Width Modulation, referred to as: PWM) signal. The backlight driver 210 may use the current value in the brightness data obtained by itself as the working current of the backlight source 2201 electrically connected thereto, and generate a PWM signal for driving the backlight source 2201 to emit light according to the amplitude and duty cycle data in the brightness data. That is, the control of the luminous brightness of the backlight source 2201 is achieved through the current + PWM hybrid control mode. In addition, the control of the luminous brightness of the backlight source 2201 may also be achieved through the current control mode, and the embodiment of the present invention does not impose any restrictions on this.

[0121] The feedback information is used to notify the corresponding backlight driver 210 to feedback the abnormal state monitored by itself. For example, if the feedback information in the dimming command received by one backlight driver 210 is 1, the backlight driver 210 will feedback the abnormal state monitored by itself to the backlight controller 340; if the feedback information in the dimming command received by another backlight driver 210 is 0, the backlight driver 210 will not feedback the abnormal state monitored by itself.

[0122] Before introducing the specific workflow of the target backlight driver parsing the dimming command, the internal structure of the backlight driver 210 provided by the embodiment of the present invention is first introduced, wherein the backlight driver 210 can exist in the form of an integrated circuit (English: Integrated Crcuit, referred to as: IC).

[0123] Figure 7 FIG. 2 shows a schematic diagram of the internal structure of a backlight driver provided by an embodiment of the present invention. Figure 7 As shown, the backlight driver 210 includes a logic processing module 2101, a driving module 2102, an oscillator module 2103, an input and output module 2104, a register module 2105, a feedback function module 2106 and a power module 2107, wherein:

[0124] The power supply module 2107 is electrically connected to the logic processing module 2101 and the driving module 2102 respectively. The logic processing module 2101 is also electrically connected to the oscillator module 2103, the input-output module 2104, the register module 2105, the driving module 2102 and the feedback function module 2106 respectively. The feedback function module 2106 is also electrically connected to the input-output module 2104 and the driving module 2102 respectively. The register module 2105 is also electrically connected to the input-output module 2104.

[0125] The power module 2107 is used to receive an external power supply voltage VDD and perform voltage conversion processing on the power supply voltage VDD to generate the working voltage of the logic processing module 2101 and the working voltage of the driving module 2102. In a specific implementation, the power module 2107 can adopt a low-dropout linear regulator (LDO), a buck converter circuit, etc.

[0126] The oscillator module 2103 is used to generate a clock signal with an initial frequency value, and send the clock signal to the logic processing module 2101 .

[0127] The input-output module 2104 is used to receive dimming instructions, obtain black insertion data in the dimming data, and obtain brightness data and delay duration corresponding to its own address information in the brightness-related information of the dimming instruction based on its own address information; and after the above data is obtained, the dimming instruction is sent to the input-output module 2104 of the next-level backlight driver 210.

[0128] The register module 2105 includes a plurality of registers, each register being used to cache the black insertion data, brightness data and delay duration acquired by the input and output module 2104 .

[0129] The logic processing module 2101 is used to obtain black insertion data, brightness data and delay time from the register module 2105 to execute the relevant process of black insertion processing, and control the opening and closing of different functions according to the CMD function instruction in the dimming instruction.

[0130] The driving module 2102 includes a plurality of driving channels (CH1 to CHk), one driving channel is electrically connected to one backlight source 2201; the driving module 2102 is used to drive the corresponding backlight source 2201 to emit light through the driving channel, or control the corresponding backlight source 2201 to turn off the backlight.

[0131] The feedback function module 2106 includes an overheating check unit 710, a backlight open circuit check unit 720, a backlight short circuit check unit 730, a drive channel voltage check unit 740, etc.; the feedback function module 2106 is used to feed back the abnormal information to the front-end backlight controller 320 through the input and output module 2104 based on the feedback information in the dimming instruction when an abnormality is detected.

[0132] Specifically, the overheating check unit 710 is used to detect the temperature of the backlight driver 220 itself to prevent the backlight driver 220 from overheating and extend the service life of the device; the backlight source open circuit check unit 720 is used to perform open circuit detection on the backlight source 2201 connected to the backlight driver 220 to ensure the safety of the backlight source 2201; the backlight source short circuit check unit 730 is used to perform short circuit detection on the backlight source 2201 connected to the backlight driver 220 to ensure the safety of the backlight source 2201; the drive channel voltage check unit 740 is used to detect the voltage of each drive channel in the drive module 2102 and feedback the voltage status.

[0133] In some embodiments, based on Figure 7 The structure of the backlight driver shown in the figure, the target backlight driver can parse the dimming instruction in the following way to obtain the black insertion data and the delay time:

[0134] The target backlight driver obtains the black insertion data corresponding to the backlight source group 220 from the dimming instruction through the input-output module 2104, and stores the black insertion data in its own register module 2105; and selects the delay duration and brightness data corresponding to its own address information from the brightness-related information included in the dimming instruction through the input-output module 2104 according to its own address information, and uses the delay duration as the delay duration corresponding to the backlight source group 220, and uses the brightness data as the brightness data corresponding to the backlight source 2201 in the backlight source group 220, and at the same time, the delay duration and brightness data are also stored in its own register module 2105.

[0135] For example, the backlight source group is Figure 4 Taking the first row of backlight sources on the backlight panel 200 as an example, the target backlight driver is the first row of backlight drivers on the backlight panel 200, and taking the leftmost backlight driver in the first row of backlight drivers as an example, the address information of the backlight driver is N-1, then the backlight driver selects the delay duration del_t(N-1) and brightness data a(N-1) corresponding to the address information N-1 in the dimming instruction it receives, and uses them as its own corresponding delay duration and brightness data. The way other target drivers determine the delay duration and brightness data is similar to that of the backlight driver, so it is not repeated here.

[0136] In the above method, the target backlight driver parses the dimming instruction, obtains the black insertion data in the dimming instruction, and obtains the delay duration corresponding to the backlight source group according to the address information of the backlight driver corresponding to the backlight source group, so that the duration of the black insertion processing can be controlled according to the black insertion data obtained by the analysis, and the backlight lighting time of the backlight source group can be controlled according to the delay duration, thereby reducing the delay, increasing the display brightness, and improving the display effect.

[0137] Step S502: When the delay time is reached, the target backlight driver generates a backlight control signal based on the black insertion data to drive the backlight source group to turn on the backlight.

[0138] In a specific implementation, the display of an image frame requires the cooperation of the backlight panel 200 and the display panel 330. Figure 3 In the structure shown, the timing controller 320 writes the pixel data in the image frame to be displayed into the corresponding liquid crystal pixel rows on the display panel 330 row by row according to the display timing.

[0139] Figure 8 FIG. 2 shows a schematic diagram of a writing sequence of pixel data provided by an embodiment of the present invention. Figure 8 As shown, pixel data can be written to the display panel 330 in a "Z"-shaped order, that is, from left to right and from top to bottom. Each time the display panel 330 receives a row of pixel data, it controls the liquid crystal molecules in the corresponding liquid crystal pixel row to start responding; when the liquid crystal molecules complete the response, the liquid crystal molecules flip from the initial state to the target state, and the liquid crystal molecules in the row are lit at this time; when the liquid crystal lighting time of the row is reached, the liquid crystal molecules are controlled to flip again, that is, flip from the target state to the initial state, and the pixel data of the row is displayed. By scanning line by line and taking advantage of the inertia effect of the human eye, a complete image frame can be presented on the display panel 330.

[0140] Fig. 9 FIG. 1 is a schematic diagram showing the lighting duration of a liquid crystal pixel row on a display panel provided by an embodiment of the present invention. Fig. 9 As shown, when the first liquid crystal pixel row receives the corresponding pixel data, the liquid crystal molecules in this row are illuminated; when the second liquid crystal pixel row receives the corresponding pixel data, the liquid crystal molecules in this row are illuminated, and so on, until the pixel data of the image frame to be displayed is sent.

[0141] In some embodiments, the target backlight driver can specifically drive the backlight source group to turn on the backlight in the following manner:

[0142] In the target backlight driver, the logic processing module 2101 obtains the delay duration, black insertion data and brightness data cached in the register module 2105, and identifies the delay duration; when it is identified that the end time of the delay duration has arrived, the logic processing module 2101 generates a backlight control signal according to the first frequency value included in the brightness data and the black insertion data, and sends the generated backlight control signal to the driving module 2102; the driving module 2102 sends the backlight control signal to the corresponding backlight source through the driving channel to drive the backlight source to turn on the backlight, wherein the frequency value of the generated backlight control signal is the first frequency value.

[0143] In some embodiments, the delay duration is determined according to the liquid crystal response duration of the target liquid crystal pixel row, wherein the target liquid crystal pixel row is a pixel row on the display panel 330 corresponding to the backlight source group 220. Specifically, the time difference between the end time of the delay duration corresponding to the backlight source group and the end time of the liquid crystal response duration of the target liquid crystal pixel row can be set to be within a preset first time difference threshold range.

[0144] Preferably, the end time of the delay time is consistent with the end time of the liquid crystal response time of the target liquid crystal pixel row. It should be noted that when the time difference between the end time of the delay time and the end time of the liquid crystal response time of the target liquid crystal pixel row is within the first time difference threshold range, it can be considered that the backlight of the backlight source group is turned on and the liquid crystal of the target liquid crystal pixel row is lit up almost synchronously. Therefore, the first time difference threshold range can be flexibly set according to actual business needs, and the embodiment of the present invention does not impose any restrictions on this.

[0145] Fig.10 FIG. 2 shows a display timing diagram of a display device provided by an embodiment of the present invention. Fig.10 As shown, when the first liquid crystal pixel row on the display panel 330 is illuminated, the first backlight source group on the backlight panel 200 is also turned on accordingly; when the second liquid crystal pixel row on the display panel 330 is illuminated, the second backlight source group on the backlight panel 200 is also turned on accordingly, and so on, thereby achieving that the backlight-on time of each backlight source group is synchronized with the lighting time of its corresponding liquid crystal pixel row.

[0146] In the above embodiment, since the delay duration is determined according to the dimming instruction, the delay duration is used to control the backlight of the backlight source group to turn on. Therefore, the delay duration can be adjusted through the dimming instruction to achieve the backlight turn-on moment of the backlight source group, which is almost synchronized with the liquid crystal lighting moment of the liquid crystal pixel row corresponding to the backlight source group, so that the backlight emitted by the backlight source can pass through the corresponding liquid crystal molecules more for imaging display, reducing the loss of light energy, increasing the overall display brightness, and improving the display effect.

[0147] Step S503, when the backlight on time is reached, the target backlight driver controls the backlight source group to turn off the backlight, generates a timing signal based on the black insertion data, and determines the black insertion end time according to the timing signal.

[0148] In some embodiments, the target backlight driver can specifically control the backlight source group to turn off the backlight in the following manner:

[0149] In the target backlight driver, when the backlight is turned on, the logic processing module 2101 starts to identify the backlight on time; when it is identified that the end time of the backlight on time has arrived, the logic processing module 2101 stops generating the backlight control signal, and accordingly, the driving module 2102 stops outputting the backlight control signal to the corresponding backlight source, and the backlight source turns off the backlight and starts black insertion.

[0150] In some embodiments, the backlight on time is determined according to the liquid crystal lighting time of the target liquid crystal pixel row. Specifically, the time difference between the backlight on time corresponding to the backlight source group and the liquid crystal lighting time of the target liquid crystal pixel row can be set to be within a preset second time difference threshold range, wherein the liquid crystal lighting time is the time for the liquid crystal molecules to maintain the target state, and the target state is the state of the liquid crystal molecules corresponding to the end of the liquid crystal response time.

[0151] Preferably, the backlight on duration corresponding to the backlight source group is set to be equal to the liquid crystal lighting duration of the target liquid crystal pixel row. It should be noted that when the time difference between the backlight on duration and the liquid crystal lighting duration of the target liquid crystal pixel row is within the preset second time difference threshold range, it can be considered that the black insertion on time of the backlight source group and the flipping time of the liquid crystal molecules in the target liquid crystal pixel row are nearly synchronized. Therefore, the second time difference threshold range can be flexibly set according to actual business needs, and the embodiment of the present invention does not impose any restrictions on this.

[0152] In a specific implementation, when the response of the liquid crystal pixel row ends and starts to light up, the target backlight driver controls the corresponding backlight source group to synchronously turn on the backlight; when the liquid crystal lighting duration of the liquid crystal pixel row ends and the liquid crystal molecules begin to flip, the target backlight driver controls the corresponding backlight source group to synchronously turn off the backlight and start black insertion.

[0153] like Fig.10 As shown, when the liquid crystal lighting duration of the first liquid crystal pixel row on the display panel 330 is reached, the liquid crystal molecules in this row begin to flip, and at this time the backlight of the first backlight source group on the backlight panel 200 is turned off, and the black insertion process begins; when the liquid crystal lighting duration of the second liquid crystal pixel row on the display panel 330 is reached, the liquid crystal molecules in this row begin to flip, and at this time the backlight of the second backlight source group on the backlight panel 200 is turned off, and the black insertion process begins, and so on.

[0154] In the above embodiment, when the backlight on time is reached, the target backlight driver stops sending the backlight control signal to the backlight in the backlight source group, so that the backlight source group turns off the backlight and starts the black insertion process. Since the backlight on time is equal to the liquid crystal lighting time of the liquid crystal pixel row corresponding to the backlight source group, when the liquid crystal molecules in the liquid crystal pixel row corresponding to the backlight source group begin to flip, the backlight source group begins to be black inserted, thereby avoiding the liquid crystal molecule flipping process, which is a period of time that should not be displayed, effectively reducing the ghosting phenomenon and improving the display effect.

[0155] In a specific implementation, the logic processing module 2101 in the target backlight driver generates a timing signal based on the black insertion data at the start of the black insertion process to time the black insertion duration, thereby accurately controlling the black insertion duration and reducing the display defects caused by the black insertion process, as follows:

[0156] In the specific implementation, Fig.11 FIG. 4 shows a schematic diagram of the working timing of a backlight source in a backlight source group provided by an embodiment of the present invention. Fig.11 As shown, during the backlight on time, the backlight source will continue to receive the backlight control signal and, under the control of the backlight control signal, continue to light up to provide backlight; when the backlight on time ends, the backlight source stops receiving the backlight control signal, thereby turning off the backlight and starting the black insertion time.

[0157] In some embodiments, the backlight control signal may be obtained by the logic processing module 2101 dividing the clock signal with the initial frequency value generated by the oscillator module 2103 according to the first frequency value included in the black insertion data.

[0158] In some embodiments, the target backlight driver may specifically determine the black insertion end time in the following manner:

[0159] When the black insertion process begins, the logic processing module 2101 in the target backlight driver performs frequency division processing on the clock signal with the initial frequency value generated by the oscillator module 2103 according to the second frequency value included in the black insertion data, and obtains a clock signal with a second frequency value, which is the timing signal; and identifies the number of timing signals, and takes the end time of the first number of timing signals as the end time of black insertion.

[0160] For example, assuming that the initial frequency value of the clock signal generated by the oscillator module 2103 is 31.456 MHz, a series of frequency values ​​can be obtained by frequency division processing using a frequency divider with any frequency division number, for example: 60 Hz, 61 Hz, ..., 120 Hz, 121 Hz, ..., 3840 Hz, ..., 31.456 MHz. Therefore, a series of frequency value gears can be set for flexible selection.

[0161] In a specific implementation, a period of time, namely, the black insertion time, can be determined according to the second frequency value and the first number of the timing signal, thereby realizing precise control over the black insertion time. For example, if a 4ms black insertion effect is to be achieved, the second frequency value can be set to 250Hz, and the first number can be set to 1. The logic processing module 2101 can generate a clock signal with a frequency of 250Hz based on the above data, and end the black insertion at the end time of the clock signal. Of course, the second frequency value can also be set to 500Hz, and the first number can be set to 2; the second frequency value can also be set to 1000Hz, and the first number can be set to 4, etc. Specifically, the more frequency value gears are set, the wider the selection range of the second frequency value is, thereby realizing flexible setting and precise control over the black insertion time.

[0162] Fig.12 FIG. 4 shows a waveform diagram of a timing signal generated by a logic processing module provided in an embodiment of the present invention. Fig.12 As shown, within the black insertion time, the logic processing module 2101 internally generates a timing signal for black insertion timing, the frequency of the timing signal is the second frequency value, and the number of the timing signals is the first number.

[0163] In the above embodiment, when the target backlight driver controls the backlight source group to turn off the backlight and starts the black insertion process, a timing signal with a second frequency value is generated according to the black insertion data, and based on the frequency value and number of the timing signal, a black insertion count is performed to determine the end time of the black insertion process, so that the black insertion time of each backlight source group can be flexibly controlled, thereby effectively reducing the display defects in the display screen and improving the display effect.

[0164] In the black insertion processing method provided by the embodiment of the present invention, the target backlight driver parses the dimming instruction to obtain the black insertion data corresponding to the backlight source group, and when the backlight on time is reached, controls the backlight source group to turn off the backlight and starts the black insertion processing. At the same time, a timing signal is generated according to the black insertion data, and the end time of the black insertion processing is determined according to the timing signal. That is, the target backlight driver inserts black one by one according to the backlight source group, and flexibly controls the black insertion time of each backlight source group, thereby reducing jitter, flickering, blurring, afterimage and other display defects in the display screen.

[0165] In addition, the target backlight driver controls the moment when the backlight source group turns on the backlight according to the delay duration determined by the dimming instruction, so that the moment when the backlight source group turns on the backlight is almost synchronized with the moment when the liquid crystal of the liquid crystal pixel row corresponding to the backlight source group is lit up, so that the backlight emitted by the backlight source can pass through the corresponding liquid crystal molecules more for imaging display, reducing the loss of light energy, increasing the overall brightness of the display, and improving the display effect.

[0166] Fig.13A complete flowchart of the black insertion processing method provided by an embodiment of the present invention is shown in FIG. Fig.13 As shown, the following steps may be specifically included:

[0167] Step S1301, the display device is turned on;

[0168] Step S1302, the main processor sends pixel data signals to the timing controller and the backlight controller respectively;

[0169] Step S1303, the timing controller generates a dimming data signal according to the pixel data signal, and sends the dimming data signal to the backlight controller;

[0170] Step S1304, the backlight controller generates a dimming instruction according to the dimming data signal, and sends the dimming instruction to the backlight driver on the backlight panel;

[0171] Step S1305, the backlight driver receives the dimming instruction, and parses the dimming instruction to obtain black insertion data, dimming data and delay time;

[0172] Step S1306, the timing controller writes pixel data to a liquid crystal pixel row to control the liquid crystal molecules to light up;

[0173] Step S1307, the backlight driver drives the backlight source group corresponding to the liquid crystal pixel row to turn on the backlight and perform black insertion processing;

[0174] Step S1308, displaying the image frame.

[0175] Based on the same concept, an embodiment of the present invention further provides a backlight panel. Since the backlight panel is the backlight panel used in the black insertion processing method in the embodiment of the present invention, and the principle of solving the problem by the backlight panel is similar to that of the black insertion processing method, the implementation of the backlight panel can refer to the implementation of the black insertion processing method, and the repeated parts will not be repeated.

[0176] like Figure 2 As shown, the backlight panel 200 includes a plurality of backlight drivers 210 and a plurality of backlight source groups 220; one backlight source group 220 includes a plurality of backlight sources 2201 arranged along a row direction; the plurality of backlight drivers 210 are arranged in an array, and one backlight driver 210 is electrically connected to at least one backlight source 2201, wherein:

[0177] For any backlight source group 220, the backlight driver 210 corresponding to the backlight source group 220 is used to perform the following operations:

[0178] In a display cycle of a frame of image, the received dimming instruction is parsed to obtain the delay duration and black insertion data corresponding to the backlight source group, wherein the dimming instruction is determined by the backlight controller according to the received dimming data signal;

[0179] When the delay time is reached, a backlight control signal is generated based on the black insertion data to drive the backlight source group 220 to turn on the backlight;

[0180] When the backlight on time is reached, the backlight source group 220 is controlled to turn off the backlight, and a timing signal is generated based on the black insertion data, and the black insertion end time is determined according to the timing signal.

[0181] In some embodiments, Figure 7 As shown, the backlight driver 210 includes a logic processing module 2101 and a driving module 2102, wherein:

[0182] The logic processing module 2101 is electrically connected to the driving module 2102. The driving module 2102 includes at least one driving channel, and one driving channel is electrically connected to one backlight source 2201.

[0183] Wherein, for the backlight driver 210 corresponding to any backlight source 2201 in the backlight source group 220:

[0184] The logic processing module 2101 is used to identify the delay time and generate a first indication signal when it is identified that the delay time has arrived, wherein the delay time is determined according to the liquid crystal response time of the target liquid crystal pixel row, the target liquid crystal pixel row is a pixel row on the display panel corresponding to the backlight source group 220, and the display panel is arranged opposite to the backlight panel 200;

[0185] The driving module 2102 is used to generate a backlight control signal corresponding to the backlight source 2201 based on the first frequency value and the brightness data corresponding to the backlight source 2201 under the control of the first indication signal, and output the backlight control signal through a driving channel electrically connected to the backlight source 2201, wherein the black insertion data includes the first frequency value, the first frequency value is obtained by frequency division processing of the initial frequency value, the frequency value of the backlight control signal is the first frequency value, and the brightness data corresponding to the backlight source is obtained after parsing the dimming instruction;

[0186] The backlight source 2201 is used to receive a backlight control signal and turn on the backlight under the control of the backlight control signal.

[0187] In some embodiments, the logic processing module 2101 is further used to identify the backlight on time, and generate a second indication signal when it is identified that the backlight on time has been reached;

[0188] The driving module 2102 is further used to stop outputting the backlight control signal under the control of the second indication signal;

[0189] The backlight source 2201 is also used to turn off the backlight when no backlight control signal is received;

[0190] The backlight on time is determined according to the liquid crystal lighting time of the target liquid crystal pixel row.

[0191] In some embodiments, the backlight driver 210 further includes an oscillator module 2103 , which is electrically connected to the logic processing module 2101 ;

[0192] An oscillator module 2103, used to generate an initial clock signal having an initial frequency value;

[0193] The logic processing module 2101 is further used to perform frequency division processing on the initial clock signal based on the second frequency value to obtain a timing signal; identify the number of timing signals, and use the end time of the first number of timing signals as the black insertion end time;

[0194] The black insertion data further includes a second frequency value and a first quantity, and the frequency value of the timing signal is the second frequency value.

[0195] In some embodiments, the backlight driver 210 further includes an input / output module 2104 and a register module 2105, wherein:

[0196] The input-output module 2104 is electrically connected to the logic processing module 2101, and the register module 2105 is electrically connected to the logic processing module 2101;

[0197] The input / output module 2104 is used to receive a dimming instruction and obtain black insertion data from the dimming instruction; select a delay time corresponding to the address information from the brightness related information according to the address information of the backlight driver 210 itself, and use the selected delay time as the delay time corresponding to the backlight source group 220, wherein the dimming instruction includes the black insertion data and the brightness related information;

[0198] The register module 2015 is used to cache black insertion data and delay duration;

[0199] The logic processing module 2101 is also used to obtain black insertion data and delay time from the register module 2105 .

[0200] In some embodiments, a first time difference between the end time of the delay duration corresponding to the backlight source group 220 and the end time of the liquid crystal response duration of the target liquid crystal pixel row is within a preset first time difference threshold range.

[0201] The time difference between the backlight on time corresponding to the backlight source group and the liquid crystal lighting time of the target liquid crystal pixel row is within a preset second time difference threshold range;

[0202] Among them, the target liquid crystal pixel row is the pixel row corresponding to the backlight source group on the display panel, the liquid crystal lighting duration is the duration for the liquid crystal molecules to maintain the target state, and the target state is the state of the liquid crystal molecules corresponding to the end of the liquid crystal response duration.

[0203] Based on the same concept, Figure 4 As shown, an embodiment of the present invention further provides a backlight system, including a backlight controller 340 and a backlight panel 200 provided in any of the above embodiments, wherein:

[0204] The backlight controller 340 is electrically connected to the plurality of backlight drivers 210 on the backlight panel 200 ;

[0205] The backlight controller 340 is used to generate a dimming instruction according to the received dimming data signal, and send the dimming instruction to the backlight driver 210 .

[0206] It should be noted that the principle of solving the problem by the backlight system is similar to that of the aforementioned backlight panel, so the implementation of the backlight system can refer to the implementation of the aforementioned backlight panel, and the repeated parts will not be repeated.

[0207] Based on the same concept, Figure 3 As shown, an embodiment of the present invention further provides a display device 300, including a display panel 330 and a backlight system provided in any of the above embodiments, wherein:

[0208] The display panel 330 is arranged opposite to the backlight panel in the backlight system; the display panel 330 includes a plurality of liquid crystal pixel rows, one liquid crystal pixel row includes a plurality of liquid crystal pixels arranged along the row direction, and one backlight source group 220 corresponds to at least one liquid crystal pixel row.

[0209] It should be noted that the principle of solving the problem by the display device is similar to that of the aforementioned backlight system, so the implementation of the display device can refer to the implementation of the aforementioned backlight system, and the repeated parts will not be repeated.

[0210] In a specific implementation, the display device in the embodiment of the present invention can be a smart terminal, a smart mobile terminal, a tablet computer, a laptop computer, a smart handheld device, a personal computer (English: Personal Computer, abbreviated as: PC), a computer, a smart screen, a display device, a vehicle-mounted device, various wearable devices, a personal digital assistant (English: Personal Digital Assistant, abbreviated as: PDA), etc.; among them, wearable devices such as virtual reality (English: Virtual Reality, abbreviated as: VR) devices, augmented reality (English: Augmented Reality, abbreviated as: AR) devices, etc.

[0211] In addition, other essential components of the display device should be understood by those skilled in the art and will not be described in detail herein, nor should they be used as limitations to the present invention.

[0212] 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.

[0213] 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 black insertion processing method, characterized in that: Applied to a backlight panel, the backlight panel includes a backlight driver and a plurality of backlight source groups, one backlight source group includes a plurality of backlight sources arranged along a row direction, the method includes: In a display cycle of a frame of image, for any backlight source group, the target backlight driver parses the received dimming instruction to obtain the delay duration and black insertion data corresponding to the backlight source group, wherein the dimming instruction is determined by the backlight controller according to the received dimming data signal, the target backlight driver is the backlight driver corresponding to the backlight source group, and the dimming instruction includes the black insertion data and brightness related information; When the delay time is reached, the target backlight driver generates a backlight control signal based on the first frequency value included in the black insertion data and the brightness data included in the brightness related information, and drives the backlight source group to turn on the backlight; When the backlight on time is reached, the target backlight driver controls the backlight source group to turn off the backlight, generates a timing signal based on the black insertion data, and determines the black insertion end time according to the timing signal.

2. The method according to claim 1, characterized in that The first frequency value included in the black insertion data is obtained by dividing a preset initial frequency value; When the delay time is reached, the target backlight driver generates a backlight control signal based on the black insertion data to drive the backlight source group to turn on the backlight, including: When the delay time is reached, for any backlight source in the backlight source group, the target backlight driver generates a backlight control signal corresponding to the backlight source based on the first frequency value included in the black insertion data and the brightness data corresponding to the backlight source, wherein the frequency value of the backlight control signal is the first frequency value; Under the control of the backlight control signal, the target backlight driver drives the backlight sources in the backlight source group to turn on the backlight; Among them, the delay duration is determined according to the liquid crystal response duration of the target liquid crystal pixel row, the target liquid crystal pixel row is the pixel row corresponding to the backlight source group on the display panel, and the brightness data corresponding to the backlight source is obtained after parsing the dimming instruction.

3. The method according to claim 2, characterized in that When the backlight on time is reached, the target backlight driver controls the backlight source group to turn off the backlight, comprising: When the backlight on time is reached, the target backlight driver stops sending the backlight control signal to the backlight sources in the backlight source group, wherein the backlight on time is determined according to the liquid crystal lighting time of the target liquid crystal pixel row.

4. The method according to claim 2, characterized in that The black insertion data further includes a second frequency value and a first quantity, wherein the second frequency value is obtained by dividing the initial frequency value; The target backlight driver generates a timing signal based on the black insertion data, and determines a black insertion end time according to the timing signal, including: The target backlight driver uses the second frequency value included in the black insertion data as the frequency value of the timing signal; The target backlight driver identifies the number of the timing signals, and uses the end time of the first number of the timing signals as the black insertion end time.

5. The method according to claim 1, characterized in that The target backlight driver parses the received dimming instruction to obtain the delay duration and black insertion data corresponding to the backlight source group, including: The target backlight driver acquires the black insertion data corresponding to the backlight source group from the dimming instruction; The target backlight driver selects a delay time corresponding to the address information from the brightness related information included in the dimming instruction according to its own address information, and uses the selected delay time as the delay time corresponding to the backlight source group.

6. The method according to any one of claims 1 to 5, characterized in that The time difference between the end time of the delay time corresponding to the backlight source group and the end time of the liquid crystal response time of the target liquid crystal pixel row is within a preset first time difference threshold range; The time difference between the backlight on time corresponding to the backlight source group and the liquid crystal lighting time of the target liquid crystal pixel row is within a preset second time difference threshold range; Among them, the target liquid crystal pixel row is the pixel row on the display panel corresponding to the backlight source group, the liquid crystal lighting duration is the duration for the liquid crystal molecules to maintain the target state, and the target state is the state of the liquid crystal molecules corresponding to the end moment of the liquid crystal response duration.

7. A backlight panel, characterized in that: It comprises a plurality of backlight drivers and a plurality of backlight source groups; one of the backlight source groups comprises a plurality of backlight sources arranged along a row direction; the plurality of backlight drivers are arranged in an array, and one of the backlight drivers is electrically connected to at least one of the backlight sources, wherein: For any backlight source group, the backlight driver corresponding to the backlight source group is used to perform the following operations: Within a display cycle of a frame of image, the received dimming instruction is parsed to obtain a delay duration and black insertion data corresponding to the backlight source group, wherein the dimming instruction is determined by the backlight controller according to the received dimming data signal, and the dimming instruction includes the black insertion data and brightness related information; When the delay time is reached, based on the first frequency value included in the black insertion data and the brightness data included in the brightness related information, a backlight control signal is generated to drive the backlight source group to turn on the backlight; When the backlight on time is reached, the backlight source group is controlled to turn off the backlight, and a timing signal is generated based on the black insertion data, and the black insertion end time is determined according to the timing signal.

8. The backlight panel according to claim 7, wherein: The backlight driver comprises a logic processing module and a driving module, wherein: The logic processing module is electrically connected to the driving module, the driving module includes at least one driving channel, and one driving channel is electrically connected to one backlight source; Wherein, for the backlight driver corresponding to any backlight source in the backlight source group: The logic processing module is used to identify the delay time and generate a first indication signal when it is identified that the delay time has been reached, wherein the delay time is determined according to the liquid crystal response time of a target liquid crystal pixel row, the target liquid crystal pixel row is a pixel row on a display panel corresponding to the backlight source group, and the display panel is arranged opposite to the backlight panel; The driving module is used to generate a backlight control signal corresponding to the backlight source based on the first frequency value and the brightness data corresponding to the backlight source under the control of the first indication signal, and output the backlight control signal through a driving channel electrically connected to the backlight source, wherein the first frequency value included in the black insertion data is obtained by frequency-dividing the initial frequency value, the frequency value of the backlight control signal is the first frequency value, and the brightness data corresponding to the backlight source is obtained after parsing the dimming instruction; The backlight source is used to receive the backlight control signal and turn on the backlight under the control of the backlight control signal.

9. The backlight panel according to claim 8, wherein: The logic processing module is further used to identify the backlight on time and generate a second indication signal when it is identified that the backlight on time has been reached; The driving module is further configured to stop outputting the backlight control signal under the control of the second indication signal; The backlight source is further used to turn off the backlight when the backlight control signal is not received; The backlight on time is determined according to the liquid crystal lighting time of the target liquid crystal pixel row.

10. The backlight panel according to claim 8, wherein: The backlight driver further comprises an oscillator module, and the oscillator module is electrically connected to the logic processing module; The oscillator module is used to generate an initial clock signal having the initial frequency value; The logic processing module is further used to perform frequency division processing on the initial clock signal based on the second frequency value to obtain the timing signal; identify the number of the timing signals, and use the end time of the first number of the timing signals as the black insertion end time; The black insertion data further includes the second frequency value and the first quantity, and the frequency value of the timing signal is the second frequency value.

11. The backlight panel according to claim 8, wherein: The backlight driver further comprises an input / output module and a register module, wherein: The input-output module is electrically connected to the logic processing module, and the register module is electrically connected to the logic processing module; The input / output module is configured to receive the dimming instruction and obtain the black insertion data from the dimming instruction; select a delay time corresponding to the address information from brightness related information according to the address information of the backlight driver itself, and use the selected delay time as the delay time corresponding to the backlight source group; The register module is used to cache the black insertion data and the delay duration; The logic processing module is further used to obtain the black insertion data and the delay time from the register module.

12. The backlight panel according to any one of claims 7 to 11, wherein: The time difference between the end time of the delay time corresponding to the backlight source group and the end time of the liquid crystal response time of the target liquid crystal pixel row is within a preset first time difference threshold range; The time difference between the backlight on time corresponding to the backlight source group and the liquid crystal lighting time of the target liquid crystal pixel row is within a preset second time difference threshold range; Among them, the target liquid crystal pixel row is the pixel row on the display panel corresponding to the backlight source group, the liquid crystal lighting duration is the duration for the liquid crystal molecules to maintain the target state, and the target state is the state of the liquid crystal molecules corresponding to the end moment of the liquid crystal response duration.

13. A backlight system, characterized in that: A backlight controller comprising a backlight panel as claimed in any one of claims 7 to 12; The backlight controller is electrically connected to a plurality of backlight drivers on the backlight panel respectively; The backlight controller is used to generate a dimming instruction according to the received dimming data signal, and send the dimming instruction to the backlight driver.

Images