CN112397032B - Dynamic backlight driving module, method and display driving module - Google Patents

Dynamic backlight driving module, method and display driving module Download PDF

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Publication number
CN112397032B
CN112397032B CN201910764410.6A CN201910764410A CN112397032B CN 112397032 B CN112397032 B CN 112397032B CN 201910764410 A CN201910764410 A CN 201910764410A CN 112397032 B CN112397032 B CN 112397032B
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backlight
signal distribution
module
electrically connected
distribution module
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CN112397032A (en
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林智远
谢相伟
闫晓林
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TCL Technology Group Co Ltd
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TCL Technology Group Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix

Abstract

The invention is applicable to the technical field of display, and provides a dynamic backlight driving module, a method and a display driving module. The embodiment of the invention adopts a dynamic backlight driving module comprising a master control board and m control boards, wherein a backlight power supply signal is generated through a power supply board of a display device, a backlight image signal is generated through an image processing unit of the display device, and the backlight power supply signal and the backlight image signal are distributed to the m control boards through the master control board; the distributed backlight power supply signal and backlight image signal are distributed to at least one backlight lamp of the ith backboard in the m backboards of the display equipment through the ith control board so as to drive and light the at least one backlight lamp of the ith backboard, and the independent control of the backlight lamp of each backboard can be realized, so that the dynamic backlight effect is realized.

Description

Dynamic backlight driving module, method and display driving module
Technical Field
The invention belongs to the technical field of display, and particularly relates to a dynamic backlight driving module, a method and a display driving module.
Background
With the continuous development of Display technologies, various Display devices based on LCD (Liquid Crystal Display), LED (Light Emitting diode), OLED (Organic electroluminescent Display), and QLED (Quantum Dot Light Emitting diode) Display technologies come into being, which brings great convenience to daily production and life of people. The liquid crystal display device adopting the traditional normally-bright backlight module has a simpler control mode on the backlight module, and the liquid crystal display device adopting the dynamic backlight driving module needs to specially design a power supply signal and a control signal of the dynamic backlight driving module.
Disclosure of Invention
In view of this, embodiments of the present invention provide a dynamic backlight driving module, a method and a display driving module, which can implement effective control of the dynamic backlight driving module by specially designing a power supply signal and a control signal of the dynamic backlight driving module.
The first aspect of the embodiment of the invention provides a dynamic backlight driving module, which is applied to display equipment, wherein the display equipment comprises a power panel, an image processing unit and m back panels, the dynamic backlight driving module comprises a master control panel and m control panels, and the m back panels are spliced in an array form to form a backlight panel array;
the master control board is electrically connected with the m control boards, the ith control board in the m control boards is used for being electrically connected with the ith backboard in the m backboards, and the master control board is used for being electrically connected with the power supply board and the image processing unit;
the power panel is used for generating backlight power signals, the image processing unit is used for generating backlight image signals, and the master control panel is used for distributing the backlight power signals and the backlight image signals to the m control panels; the ith control board is used for distributing the distributed backlight power supply signal and backlight image signal to at least one backlight lamp of the ith back plate so as to drive and light the at least one backlight lamp of the ith back plate;
wherein m is not less than 2, i is 1, 2, …, m and i are integers.
In one embodiment, the control board includes a power signal distribution module and an image signal distribution module;
the master control board is electrically connected with the m control boards respectively, and the power signal distribution module and the image signal distribution module are electrically connected with the master control board;
the power signal distribution module of the ith control board is used for distributing the distributed backlight power signals to at least one backlight lamp of the ith back plate, and the image signal distribution module of the ith control board is used for distributing the distributed backlight image signals to at least one backlight lamp of the ith back plate so as to drive and light at least one backlight lamp of the ith back plate.
In one embodiment, at least one backlight lamp arranged on the back plate is a monochrome backlight lamp, the power panel comprises a power conversion module, and the total control panel comprises a total power signal distribution module and a total image signal distribution module;
the total power signal distribution module is used for being electrically connected with the power conversion module, and the total image signal distribution module is used for being electrically connected with the image processing unit;
the total control board is respectively and electrically connected with the m control boards, the total power signal distribution module is electrically connected with the power signal distribution module, and the total image signal distribution module is electrically connected with the image signal distribution module;
the power conversion module is used for generating the backlight power signals, the total power signal distribution module is used for distributing the backlight power signals to the m control boards, and the total image signal distribution module is used for distributing the backlight image signals to the m control boards.
In one embodiment, the control board includes a power signal distribution module and an image signal distribution module;
the master control board is electrically connected with one control board, the m control boards are electrically connected end to end in sequence, the master control board is electrically connected with the power signal distribution module and the image signal distribution module of one control board, the power signal distribution modules of the m control boards are electrically connected end to end in sequence, and the image signal distribution modules of the m control boards are electrically connected end to end in sequence;
the power signal distribution module of the ith control board is used for distributing the distributed backlight power signals to at least one backlight lamp of the ith back board, and the image signal distribution module of the ith control board is used for distributing the distributed backlight image signals to at least one backlight lamp of the ith back board so as to drive and light at least one backlight lamp of the ith back board.
In one embodiment, at least one backlight lamp arranged on the back plate is a monochrome backlight lamp, the power panel comprises a power conversion module, and the total control panel comprises a total power signal distribution module and a total image signal distribution module;
the total power signal distribution module is electrically connected with the power conversion module, and the total image signal distribution module is electrically connected with the image processing unit;
the total control board is electrically connected with one control board, the m control boards are sequentially and electrically connected end to end, and the total power signal distribution module and the total image signal distribution module are respectively and correspondingly electrically connected with the power signal distribution module and the image signal distribution module of one control board one by one;
the power conversion module is used for generating the backlight power signals, the total power signal distribution module is used for distributing the backlight power signals to the m control boards, and the total image signal distribution module is used for distributing the backlight image signals to the m control boards.
In one embodiment, the control board includes a power signal distribution module and an image signal distribution module; the m control panels are divided into at least two groups, the master control panel is electrically connected with one control panel in each group, when all the control panels in each group are electrically connected end to end in sequence, the master control panel is electrically connected with the power signal distribution module and the image signal distribution module of one control panel in each group, the power signal distribution modules of all the control panels in each group are electrically connected end to end in sequence, and the image signal distribution modules of all the control panels in each group are electrically connected end to end in sequence;
the power signal distribution module of the ith control board is used for distributing the distributed backlight power signals to at least one backlight lamp of the ith back plate, and the image signal distribution module of the ith control board is used for distributing the distributed backlight image signals to at least one backlight lamp of the ith back plate so as to drive and light at least one backlight lamp of the ith back plate.
In one embodiment, at least one backlight lamp arranged on the back plate is a monochrome backlight lamp, the power panel comprises a power conversion module, and the total control panel comprises a total power signal distribution module and a total image signal distribution module;
the total power signal distribution module is used for being electrically connected with the power conversion module, and the total image signal distribution module is used for being electrically connected with the image processing unit;
the m control panels are divided into at least two groups, the master control panel is electrically connected with one control panel in each group of control panels, all the control panels in each group of control panels are electrically connected end to end in sequence, and the master power signal distribution module and the master image signal distribution module are respectively and correspondingly electrically connected with the power signal distribution module and the image signal distribution module of one control panel in each group of control panels one by one;
the power conversion module is used for generating the backlight power signals, the total power signal distribution module is used for distributing the backlight power signals to the m control boards, and the total image signal distribution module is used for distributing the backlight image signals to the m control boards.
In one embodiment, the at least one backlight lamp disposed on the back plate includes RGB three-primary-color backlight lamps, the power panel includes a first power conversion module, a second power conversion module and a third power conversion module, the general control panel includes a first general power signal distribution module, a second general power signal distribution module, a third general power signal distribution module and a general image signal distribution module, and the control panel includes a first power signal distribution module, a second power distribution module, a third power distribution module and an image signal distribution module;
the first total power signal distribution module, the second total power signal distribution module and the third total power signal distribution module are respectively used for being electrically connected with the first power conversion module, the second power conversion module and the third power conversion module in a one-to-one correspondence manner, and the total image signal distribution module is used for being electrically connected with the image processing unit;
the total control board is respectively electrically connected with the m control boards, and the first total power signal distribution module, the second total power signal distribution module, the third total power signal distribution module and the total image signal distribution module are respectively and correspondingly electrically connected with the first power signal distribution module, the second power distribution module, the third power distribution module and the image signal distribution module one to one.
In one embodiment, the at least one backlight lamp disposed on the back plate includes RGB three-primary-color backlight lamps, the power panel includes a first power conversion module, a second power conversion module and a third power conversion module, the general control panel includes a first general power signal distribution module, a second general power signal distribution module, a third general power signal distribution module and a general image signal distribution module, and the control panel includes a first power signal distribution module, a second power distribution module, a third power distribution module and an image signal distribution module;
the first total power signal distribution module, the second total power signal distribution module and the third total power signal distribution module are respectively used for being electrically connected with the first power conversion module, the second power conversion module and the third power conversion module in a one-to-one correspondence manner, and the total image signal distribution module is used for being electrically connected with the image processing unit; the utility model discloses a control panel, including m control panels, master control panel, m control panels, second power signal distribution module, image signal distribution module, first total power signal distribution module, second total power signal distribution module, third total power signal distribution module and total image signal distribution module respectively with one the first power signal distribution module, second power distribution module, third power distribution module and the image signal distribution module one-to-one electricity of control panel are connected, the first power signal distribution module head and the tail of m control panels are connected electrically in proper order, the second power signal distribution module head and the tail of m control panels are connected electrically in proper order, the third power signal distribution module head and the tail of m control panels are connected electrically in proper order, the image signal distribution module head and the tail of m control panels are connected electrically in proper order.
In one embodiment, the at least one backlight lamp disposed on the back plate includes RGB three-primary-color backlight lamps, the power panel includes a first power conversion module, a second power conversion module and a third power conversion module, the general control panel includes a first general power signal distribution module, a second general power signal distribution module, a third general power signal distribution module and a general image signal distribution module, and the control panel includes a first power signal distribution module, a second power distribution module, a third power distribution module and an image signal distribution module;
the first total power signal distribution module, the second total power signal distribution module and the third total power signal distribution module are respectively used for being electrically connected with the first power conversion module, the second power conversion module and the third power conversion module in a one-to-one correspondence manner, and the total image signal distribution module is used for being electrically connected with the image processing unit;
the m control panels are divided into at least two groups, the master control panel is electrically connected with one control panel in each group of control panels, all the control panels in each group of control panels are electrically connected end to end in sequence, the first total power signal distribution module, the second total power signal distribution module, the third total power signal distribution module and the total image signal distribution module are respectively electrically connected with one of each group of control panels in a one-to-one correspondence manner, all the first power signal distribution modules in each group of control panels are electrically connected in sequence from head to tail, all the second power signal distribution modules in each group of control panels are electrically connected in sequence from head to tail, all the third power signal distribution modules in each group of control panels are electrically connected in sequence from head to tail, and all the image signal distribution modules in each group of control panels are electrically connected in sequence from head to tail.
In one embodiment, the at least one backlight lamp disposed on the back plate comprises RGB three-primary-color backlight lamps, the power panel comprises a power conversion module, the general control panel comprises a general power signal distribution module and a general image signal distribution module, and the control panel comprises a first voltage conversion module, a second voltage conversion module, a third voltage conversion module and an image signal distribution module;
the total power signal distribution module is used for being electrically connected with the power conversion module, and the total image signal distribution module is used for being electrically connected with the image processing unit;
the master control board is respectively electrically connected with the m control boards, the master power signal distribution module is electrically connected with the first voltage conversion module, the second voltage conversion module and the third voltage conversion module, and the master image signal distribution module is electrically connected with the image signal distribution module.
In one embodiment, the at least one backlight lamp disposed on the back plate comprises RGB three-primary-color backlight lamps, the power panel comprises a power conversion module, the general control panel comprises a general power signal distribution module and a general image signal distribution module, and the control panel comprises a first voltage conversion module, a second voltage conversion module, a third voltage conversion module and an image signal distribution module;
the total power signal distribution module is used for being electrically connected with the power conversion module, and the total image signal distribution module is used for being electrically connected with the image processing unit; total control panel and one the control panel electricity is connected, m individual control panel end to end electricity is connected in proper order, total power signal distribution module and one the first voltage conversion module, second voltage conversion module and the third voltage conversion module electricity of control panel are connected, total image signal distribution module and one the image signal distribution module electricity of control panel is connected, the first voltage conversion module end to end electricity of m individual control panel is connected in proper order, the second voltage conversion module end to end electricity of m individual control panel is connected in proper order, the third voltage conversion module end to end electricity of m individual control panel is connected in proper order, the image signal distribution module end to end electricity of m individual control panel is connected in proper order.
In one embodiment, the at least one backlight lamp disposed on the back plate comprises RGB three-primary-color backlight lamps, the power panel comprises a power conversion module, the general control panel comprises a general power signal distribution module and a general image signal distribution module, and the control panel comprises a first voltage conversion module, a second voltage conversion module, a third voltage conversion module and an image signal distribution module;
the total power signal distribution module is used for being electrically connected with the power conversion module, and the total image signal distribution module is used for being electrically connected with the image processing unit; the m control panels are divided into at least two groups, the master control panel is electrically connected with one control panel in each group of control panels, and when all control panels in each group of control panels are electrically connected in sequence, the master power signal distribution module is electrically connected with one control panel in each group of control panels, the first voltage conversion module, the second voltage conversion module and the third voltage conversion module of each control panel are electrically connected, the master image signal distribution module is electrically connected with one control panel in each group of control panels, all first voltage conversion modules in each group of control panels are electrically connected in sequence, all second voltage conversion modules in each group of control panels are electrically connected in sequence, all third voltage conversion modules in each group of control panels are electrically connected in sequence, and all image signal distribution modules in each group of control panels are electrically connected in sequence.
A second aspect of the embodiment of the present invention provides a display driving module, which is applied to a display device, and the display driving module includes the dynamic backlight driving module, the power board, and the image processing unit, which are provided by the first aspect of the embodiment of the present invention.
In one embodiment, the display device further comprises a liquid crystal screen, the display driving module further comprises a video signal interface and a liquid crystal control panel, and the image processing unit comprises an image processing module;
the image processing module is electrically connected with the master control board, the video signal interface and the liquid crystal control board, and the liquid crystal control board is used for being electrically connected with the liquid crystal screen;
the image processing module is used for inputting a video signal through the video signal interface and generating a backlight image signal and a liquid crystal image signal according to the video signal;
the liquid crystal control panel is used for generating scanning signals and data signals according to the liquid crystal image signals so as to drive the liquid crystal screen to display liquid crystal images.
In one embodiment, the image processing module comprises a backlight image generation module and a liquid crystal image compensation module;
the backlight image generation module is electrically connected with the video signal interface, the liquid crystal image compensation module and the master control board, and the liquid crystal image compensation module is electrically connected with the video signal interface and the liquid crystal control board;
the backlight image generation module is used for inputting a video signal through the video signal interface and generating the backlight image signal according to the video signal;
the liquid crystal image compensation module is used for inputting the backlight image signal and inputting a video signal through the video signal interface so as to generate a liquid crystal image signal according to the video signal and the backlight image signal.
In one embodiment, the image processing unit further comprises a video signal transmission interface;
the liquid crystal image compensation module is electrically connected with the liquid crystal control panel through the video signal transmission interface.
A third aspect of the embodiments of the present invention provides a dynamic backlight driving method, which is implemented based on the dynamic backlight driving module provided in the first aspect of the embodiments of the present invention or the display driving module provided in the second aspect of the embodiments of the present invention, and the dynamic backlight driving method includes:
distributing the backlight power supply signal and the backlight image signal to the m control panels through the master control panel;
distributing the distributed backlight power supply signal and backlight image signal to at least one backlight lamp of the ith back plate through the ith control board so as to drive and light at least one backlight lamp of the ith back plate.
The embodiment of the invention provides a dynamic backlight driving module comprising a master control board and m control boards, wherein a backlight power supply signal is generated through a power supply board of a display device, a backlight image signal is generated through an image processing unit of the display device, and the backlight power supply signal and the backlight image signal are distributed to the m control boards through the master control board; the distributed backlight power supply signal and backlight image signal are distributed to at least one backlight lamp of the ith backboard in the m backboards of the display equipment through the ith control board so as to drive and light the at least one backlight lamp of the ith backboard, and the independent control of the backlight lamp of each backboard can be realized, so that the dynamic backlight effect is realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a dynamic backlight driving module according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of a dynamic backlight driving module according to an embodiment of the invention;
fig. 3 is a schematic structural diagram of a dynamic backlight driving module according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of a backlight panel array according to an embodiment of the invention;
fig. 5 is a schematic structural diagram of a dynamic backlight driving module according to a second embodiment of the present invention;
fig. 6 is another schematic structural diagram of a dynamic backlight driving module according to a second embodiment of the present invention;
fig. 7 is a schematic structural diagram of a dynamic backlight driving module according to a third embodiment of the present invention;
fig. 8 is a schematic structural diagram of a dynamic backlight driving module according to a fourth embodiment of the present invention;
fig. 9 is a schematic structural diagram of a display driving module according to a fifth embodiment of the present invention;
fig. 10 is another schematic structural diagram of a display driving module according to a fifth embodiment of the present invention;
fig. 11 is a flowchart illustrating a dynamic backlight driving method according to a sixth embodiment of the present invention;
fig. 12 is a schematic structural diagram of a display device according to a seventh embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "comprises" and "comprising," and any variations thereof, in the description and claims of this invention and the above-described drawings are intended to cover non-exclusive inclusions. For example, a process, method, or system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," and "third," etc. are used to distinguish between different objects and are not used to describe a particular order.
Example one
As shown in fig. 1, fig. 2 or fig. 3, the present embodiment provides a dynamic backlight driving module 3 applied to a display device, where the dynamic backlight driving module 3 includes a general control board 30 and m control boards (respectively denoted as 41, 42, … and 4 m);
the master control board 30 is electrically connected with the m control boards 41-4 m, an ith control board 4i of the m control boards 41-4 m is used for being electrically connected with an ith backboard of m backplates (respectively represented as 51, 52, … and 5m) of the display equipment (namely, the control board 41 is electrically connected with the backboard 51, the control board 42 is electrically connected with the backboard 52, … and the control board 4m is electrically connected with the backboard 5m), the master control board 30 is used for being electrically connected with the power supply board 1 and the image processing unit 2 of the display equipment, and the m backplates 51-5 m are spliced in an array form to form a backlight board array; wherein m is not less than 2, i is 1, 2, …, m and i are integers.
In specific application, each back plate is provided with at least one backlight lamp which is regularly arranged, the numerical value of m and the arrangement mode of the backlight plate array can be set according to actual needs, and each control plate is used for correspondingly and electrically connecting one back plate.
As shown in fig. 4, the exemplary backlight array is shown as m1 rows by m2 columns; wherein m1 × m2 ═ m, and m1 and m2 are integers.
In specific application, each control board can be independently and electrically connected with the master control board, namely m control boards are connected in parallel; the m control panels can also be electrically connected with the master control panel after being sequentially connected end to end, namely the m control panels are connected in series; the m control panels can also be connected in series and parallel and then electrically connected with the master control panel, namely at least two control panels in the m control panels are electrically connected with the master control panel, and the other control panels are electrically connected with one control panel in the at least two control panels after being sequentially connected in an end-to-end mode.
As shown in FIG. 1, the master control board 30 is exemplarily shown to be electrically connected to m control boards 41-4 m, i.e., the m control boards 41-4 m are connected in parallel; wherein m is more than or equal to n and more than or equal to 1, and n is an integer.
In specific application, each control board is separately and electrically connected to the master control board, so that each control board has the same circuit connection structure and mechanical connection structure, and circuit design and assembly of the dynamic backlight driving module are facilitated.
In specific applications, the back plate may be a glass back plate, or a light-transmitting back plate made of other materials, for example, an acrylic back plate.
In a Specific Application, the main control board and the control board may be implemented by a chip or a Circuit having a power Signal and an image control Signal transmission function, and may specifically be a Central Processing Unit (CPU), another general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or a transistor logic device, a discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
As shown in fig. 2, the general control board 30 is exemplarily shown to be electrically connected to one control board 41, and m control boards 41 to 4m are electrically connected end to end in sequence, that is, the m control boards 41 to 4m are connected in series.
In concrete application, through making m control panels through the electricity of series connection mode connect to total control panel, can effectively shorten m control panels to total line length of walking of total control panel, walk line simple structure.
As shown in fig. 3, the exemplary m control boards 41-4 m are divided into three groups, the main control board 30 is electrically connected to the control boards 41 in the first group of control boards, the control boards 4n in the second group of control boards, and the control boards 4m-1 in the third group of control boards, all the control boards in each group of control boards are electrically connected end to end in sequence, that is, at least two control boards in the m control boards are electrically connected to the main control board, and the other control boards are electrically connected end to end in sequence and then are electrically connected to one control board in the at least two control boards.
In specific application, the number of groups of control panels and the number of control panels in each group of control panels can be set according to actual needs, and the number of control panels in different groups of control panels can be the same or different. Through making m control panels adopt the mode electricity of cluster and mixing to link to be connected to total control panel, both be convenient for carry out circuit design and equipment to dynamic backlight drive module, also shortened always walk line length to a certain extent, walk the line mode nimble, the group number of control panel is less, always walk line length short, can design according to actual need.
The working principle of the display device provided by the embodiment is as follows:
the power panel 1 is used for generating backlight power signals, the image processing unit 2 is used for generating backlight image signals, and the master control panel 30 is used for distributing the backlight power signals and the backlight image signals to m control panels 41-4 m; the ith control board is used for distributing the distributed backlight power supply signal and the backlight image signal to at least one backlight lamp of the ith back plate so as to drive and light the at least one backlight lamp of the ith back plate. In a specific application, the backlight power supply signal is used for supplying power to the backlight lamp to enable the backlight lamp to be lightened; the backlight image signal is used for controlling the brightness of the backlight lamps, so that all the backlight lamps on each back plate display the backlight image together.
In the present embodiment, the electrical connection means a connection for transmitting a current signal, a voltage signal, or a pulse signal through a cable line, a data line, or the like. The electric connecting lines between the master control board and the control board and between the control board and the back board comprise a transmission channel for transmitting backlight power signals and a transmission channel for transmitting backlight image signals.
In the embodiment, only the backlight plate array, the power panel and the image processing unit which are electrically connected with the dynamic backlight module in the display device are introduced, in practical application, the display device can be specifically a liquid crystal display device, an LED, an OLED or a QLED display device, and when the display device is a liquid crystal display device, the display device can further comprise a liquid crystal control panel and a video signal interface which are electrically connected with the image processing unit, and a liquid crystal screen which is electrically connected with the liquid crystal control panel; when the display device is an LED, OLED or QLED display device, the dynamic backlight driving module can be directly used as a display screen of the display device, and all backlight lamps of the m back plates are arranged into an LED, OLED or QLED array.
The embodiment provides a dynamic backlight driving module comprising a master control board and m control boards, wherein the master control board distributes backlight power signals and backlight image signals to the m control boards, and each control board distributes the distributed backlight power signals and backlight image signals to at least one backlight of one back board so as to independently drive and light at least one backlight of each back board, thereby realizing a dynamic backlight effect.
Example two
In the present embodiment, each control board includes a power signal distribution module and an image signal distribution module.
Based on the embodiment corresponding to fig. 1, when the master control board is electrically connected to the m control boards, each power signal distribution module and each image signal distribution module are electrically connected to the master control board and one backplane.
In specific application, each control panel is electrically connected with one backboard through one first connecting wire, the master control panel is electrically connected with m control panels through m second connecting wires respectively, and the first connecting wire and the second connecting wire comprise power signal transmission channels and image signal transmission channels. The power signal distribution module and the image signal distribution module of each control board are electrically connected with a back board through the same first connecting line, wherein the power signal distribution module is electrically connected with the back board through a power signal transmission channel of the first connecting line, and the image signal distribution module is electrically connected with the back board through an image signal transmission channel of the first connecting line. The power signal distribution module and the image signal distribution module of each control panel are electrically connected with the master control panel through the same second connecting line, wherein the power signal distribution module is electrically connected with the master power signal distribution module through a power signal transmission channel of the second connecting line, and the image signal distribution module is electrically connected with the master image signal distribution module through an image signal transmission channel of the second connecting line.
Based on the embodiment corresponding to fig. 2, when the master control board is electrically connected with one control board and the m control boards are electrically connected end to end in sequence, the master control board is electrically connected with the power signal distribution module and the image signal distribution module of one control board, the power signal distribution modules of the m control boards are electrically connected end to end in sequence, and the image signal distribution modules of the m control boards are electrically connected end to end in sequence.
In specific application, each control panel is electrically connected with a backboard through a first connecting line, the master control panel is electrically connected with one control panel through a second connecting line, the m control panels are sequentially and electrically connected end to end through m-1 third connecting lines, and the first connecting line, the second connecting line and the third connecting line respectively comprise a power signal transmission channel and an image signal transmission channel. The power signal distribution module and the image signal distribution module of each control board are electrically connected with a back board through the same first connecting line, wherein the power signal distribution module is electrically connected with the back board through a power signal transmission channel of the first connecting line, and the image signal distribution module is electrically connected with the back board through an image signal transmission channel of the first connecting line. The power signal distribution module and the image signal distribution module of one control panel are electrically connected with the master control panel through the same second connecting line, wherein the power signal distribution module is electrically connected with the master power signal distribution module through a power signal transmission channel of the second connecting line, and the image signal distribution module is electrically connected with the master image signal distribution module through an image signal transmission channel of the second connecting line. Any two adjacent control panels are electrically connected through a third connecting wire, wherein the power signal distribution modules of the two adjacent control panels are electrically connected through a power signal transmission channel of the third connecting wire, and the image signal distribution modules of the two adjacent control panels are electrically connected through an image signal transmission channel of the third connecting wire. Based on the embodiment that fig. 3 corresponds, when m control panels are divided into at least two groups, the master control panel is electrically connected with one control panel in each group of control panels, and when all control panels in each group of control panels are electrically connected end to end in sequence, the master control panel is electrically connected with the power signal distribution module and the image signal distribution module of one control panel in each group of control panels in a communication manner, the power signal distribution modules of all control panels in each group of control panels are electrically connected end to end in sequence, and the image signal distribution modules of all control panels in each group of control panels are electrically connected end to end in sequence.
In specific application, each control panel is electrically connected with a back plate through a first connecting line, the master control panel is electrically connected with one control panel in each group of control panels through a plurality of second connecting lines respectively, all the control panels in each group of control panels are electrically connected end to end through a plurality of third connecting lines in sequence, and the first connecting lines, the second connecting lines and the third connecting lines all comprise power signal transmission channels and image signal transmission channels. The power signal distribution module and the image signal distribution module of each control board are electrically connected with a back board through the same first connecting line, wherein the power signal distribution module is electrically connected with the back board through a power signal transmission channel of the first connecting line, and the image signal distribution module is electrically connected with the back board through an image signal transmission channel of the first connecting line. The power signal distribution module and the image signal distribution module of one control panel in each group of control panels are electrically connected with the main control panel through the same second connecting line, wherein the power signal distribution module is electrically connected with the main power signal distribution module through a power signal transmission channel of the second connecting line, and the image signal distribution module is electrically connected with the main image signal distribution module through an image signal transmission channel of the second connecting line. In each group of control panels, any two adjacent control panels are electrically connected through a third connecting wire, wherein the power signal distribution modules of the two adjacent control panels are electrically connected through a power signal transmission channel of the third connecting wire, and the image signal distribution modules of the two adjacent control panels are electrically connected through an image signal transmission channel of the third connecting wire.
For convenience of illustration in fig. 5, the control board 4i is only exemplarily shown to include a power signal distribution module 4i1 and an image signal distribution module 4i2, the power signal distribution module 4i1 is electrically connected to the backplane 5i through a power signal transmission channel of one first connection line 01i, the image signal distribution module 4i2 is electrically connected to the backplane 5i through an image signal transmission channel of the first connection line 01i, the power signal distribution module 4i1 is electrically connected to the main control board 30 through a power signal transmission channel of a second connection line 02i, and the image signal distribution module 4i2 is electrically connected to the main control board 30 through an image signal transmission channel of the second connection line 02 i.
The working principle of the embodiment corresponding to fig. 5 is as follows:
the power supply signal distribution module of the ith control board is used for distributing the distributed backlight power supply signal to at least one backlight lamp of the ith back plate, and the image signal distribution module of the ith control board is used for distributing the distributed backlight image signal to at least one backlight lamp of the ith back plate so as to drive and light at least one backlight lamp of the ith back plate.
In a specific application, the power signal distribution module may be implemented by a power management device and/or a voltage regulator device, and the image signal distribution module may be implemented by an image processing device.
As shown in fig. 6, on the basis of fig. 5, the power panel 1 includes a power conversion module 11, and the general control panel 30 includes a general power signal distribution module 31 and a general image signal distribution module 32;
the total power signal distribution module 31 is used for being electrically connected with the power conversion module 11, and the total image signal distribution module 32 is used for being electrically connected with the image processing unit 2;
based on the embodiment corresponding to fig. 1, when the main control board 30 is electrically connected to the m control boards, the main power signal distribution module 31 is electrically connected to each power signal distribution module through the power signal transmission channels of the m second connection lines, and the main image signal distribution module 32 is electrically connected to each image signal distribution module through the image signal transmission channels of the m second connection lines;
based on the embodiment corresponding to fig. 2, when the main control board 30 is electrically connected to one control board, and the m control boards are electrically connected end to end in sequence, the main power signal distribution module 31 is electrically connected to the power signal distribution module of one control board through the power signal transmission channel of one second connection line, and the main image signal distribution module 32 is electrically connected to the image signal distribution module of one control board through the image signal transmission channel of one second connection line, respectively;
based on the embodiment corresponding to fig. 3, when m control boards are divided into at least two groups, the main control board 30 is electrically connected to one control board in each group of control boards, and all control boards in each group of control boards are electrically connected end to end in sequence, the main power signal distribution module 31 is electrically connected to the power signal distribution module of one control board in each group of control boards in a one-to-one correspondence manner through the power signal transmission channels of the plurality of second connection lines, and the main image signal distribution module 32 is electrically connected to the image signal distribution module of one control board in each group of control boards in a one-to-one correspondence manner through the image signal transmission channels of the plurality of second connection lines.
The working principle of the embodiment corresponding to fig. 6 is as follows:
the power conversion module 11 is configured to generate a backlight power signal, the total power signal distribution module 31 is configured to distribute the backlight power signal to the m control boards, and the total image signal distribution module 32 is configured to distribute the backlight image signal to the m control boards.
In a specific application, the power conversion module may be implemented by a power conversion device, for example, a dc-to-dc device, an ac-to-dc device, and/or a rectifier device; the total power signal distribution module may be specifically implemented by a power management device and/or a voltage regulator device, and the total image signal distribution module may be implemented by an image processing device.
The structure provided by this embodiment is suitable for use in cases where each back plate comprises a monochrome, two-color or multi-color (e.g., RGB three primary colors) backlight, and is particularly suitable for use in cases where the backlight for each back plate is a monochrome backlight.
EXAMPLE III
As shown in fig. 7, in this embodiment, at least one backlight disposed on each back panel includes RGB three-primary-color backlights, the power panel 1 includes a first power conversion module 11, a second power conversion module 12, and a third power conversion module 13, the total control panel 30 includes a first total power signal distribution module 31, a second total power signal distribution module 32, a third total power signal distribution module 33, and a total image signal distribution module 34, and each control panel includes a first power signal distribution module, a second power distribution module, a third power distribution module, and an image signal distribution module;
the first total power signal distribution module 31, the second total power signal distribution module 32, and the third total power signal distribution module 33 are respectively used for being electrically connected with the first power conversion module 11, the second power conversion module 12, and the third power conversion module 13 in a one-to-one correspondence manner, and the total image signal distribution module 34 is used for being electrically connected with the image processing unit 2.
Based on the embodiment corresponding to fig. 1, when the total control board 30 is electrically connected to the m control boards, the first total power signal distribution module 31, the second total power signal distribution module 32, the third total power signal distribution module 33, and the total image signal distribution module 34 are electrically connected to each first power signal distribution module, each second power distribution module, each third power distribution module, and each image signal distribution module in a one-to-one correspondence.
In specific application, each control panel is electrically connected with a back panel through a first connecting line, the master control panel is electrically connected with m control panels through m second connecting lines respectively, the power panel is electrically connected with the master control panel through a fourth connecting line, the first connecting line and the fourth connecting line respectively comprise a first power signal transmission channel, a second power signal transmission channel and a third power signal transmission channel, and the first connecting line and the second connecting line respectively comprise image signal transmission channels. The first power signal distribution module, the second power signal distribution module, the third power signal distribution module and the image signal distribution module of each control panel are electrically connected with a back plate through the same first connecting wire, wherein the first power signal distribution module is electrically connected with the back plate through a first power signal transmission channel of the first connecting wire, the second power signal distribution module is electrically connected with the back plate through a second power signal transmission channel of the first connecting wire, the third power signal distribution module is electrically connected with the back plate through a third power signal transmission channel of the first connecting wire, and the image signal distribution module is electrically connected with the back plate through an image signal transmission channel of the first connecting wire. The first power signal distribution module, the second power signal distribution module, the third power signal distribution module and the image signal distribution module of each control panel are electrically connected with the master control panel through the same second connecting line, wherein the first power signal distribution module is electrically connected with the first master power signal distribution module through a first power signal transmission channel of the second connecting line, the second power signal distribution module is electrically connected with the second master power signal distribution module through a second power signal transmission channel of the second connecting line, the third power signal distribution module is electrically connected with the third master power signal distribution module through a third power signal transmission channel of the second connecting line, and the image signal distribution module is electrically connected with the master image signal distribution module through an image signal transmission channel of the second connecting line. The first power supply conversion module is electrically connected with the first total power supply signal distribution module through a first power supply signal transmission channel of a fourth connecting wire, the second power supply conversion module is electrically connected with the second total power supply signal distribution module through a second power supply signal transmission channel of the fourth connecting wire, and the third power supply conversion module is electrically connected with the third total power supply signal distribution module through a third power supply signal transmission channel of the fourth connecting wire. Based on the embodiment corresponding to fig. 2, when the master control board 30 is electrically connected to one control board and the m control boards are electrically connected end to end in sequence, the first total power signal distribution module 31, the second total power signal distribution module 32, the third total power signal distribution module 33 and the total image signal distribution module 34 are respectively electrically connected to the first power signal distribution module, the second power distribution module, the third power distribution module and the image signal distribution module of one control board in a one-to-one correspondence manner, the first power signal distribution modules of the m control boards are electrically connected end to end in sequence, the second power signal distribution modules of the m control boards are electrically connected end to end in sequence, the third power signal distribution modules of the m control boards are electrically connected end to end in sequence, and the image signal distribution modules of the m control boards are electrically connected end to end in sequence.
In the specific application, each control panel is electrically connected with a back panel through a first connecting line, the master control panel is electrically connected with one control panel through a second connecting line, the m control panels are sequentially and electrically connected end to end through m-1 third connecting lines, the power panel is electrically connected with the master control panel through a fourth connecting line, the first connecting line, the second connecting line and the third connecting line respectively comprise a first power signal transmission channel, a second power signal transmission channel, a third power signal transmission channel and an image signal transmission channel, and the fourth connecting line comprises a first power signal transmission channel, a second power signal transmission channel and a third power signal transmission channel. The first power signal distribution module, the second power signal distribution module, the third power signal distribution module and the image signal distribution module of each control panel are electrically connected with a back plate through the same first connecting wire, wherein the first power signal distribution module is electrically connected with the back plate through a first power signal transmission channel of the first connecting wire, the second power signal distribution module is electrically connected with the back plate through a second power signal transmission channel of the first connecting wire, the third power signal distribution module is electrically connected with the back plate through a third power signal transmission channel of the first connecting wire, and the image signal distribution module is electrically connected with the back plate through an image signal transmission channel of the first connecting wire. The first power signal distribution module, the second power signal distribution module, the third power signal distribution module and the image signal distribution module of one control panel are electrically connected with the master control panel through the same second connecting wire, wherein the first power signal distribution module is electrically connected with the first master power signal distribution module through a first power signal transmission channel of the second connecting wire, the second power signal distribution module is electrically connected with the second master power signal distribution module through a second power signal transmission channel of the second connecting wire, the third power signal distribution module is electrically connected with the third master power signal distribution module through a third power signal transmission channel of the second connecting wire, and the image signal distribution module is electrically connected with the master control panel through an image signal transmission channel of the second connecting wire. Any two adjacent control panels are electrically connected through a third connecting wire, wherein the first power signal distribution modules of the two adjacent control panels are electrically connected through a first power signal transmission channel of the third connecting wire, the second power signal distribution modules of the two adjacent control panels are electrically connected through a second power signal transmission channel of the third connecting wire, the third power signal distribution modules of the two adjacent control panels are electrically connected through a third power signal transmission channel of the third connecting wire, and the image signal distribution modules of the two adjacent control panels are electrically connected through image signal transmission channels of the third connecting wire.
Based on the embodiment corresponding to fig. 3, when m control boards are divided into at least two groups, the master control board 30 is electrically connected with one control board in each group of control boards, and all the control boards in each group of control boards are electrically connected end to end, the first total power signal distribution module 31, the second total power signal distribution module 32, the third total power signal distribution module 33 and the total image signal distribution module 34 are respectively and electrically connected with the first power signal distribution module, the second power distribution module, the third power distribution module and the image signal distribution module of one control board in each group of control boards in a one-to-one correspondence manner, all the first power signal distribution modules in each group of control boards are electrically connected end to end in sequence, all the second power signal distribution modules in each group of control boards are electrically connected end to end in sequence, and all the third power signal distribution modules in each group of control boards are electrically connected end to end in sequence, all the image signal distribution modules in each group of control boards are electrically connected end to end in sequence.
In the concrete application, each control panel is electrically connected with a backboard through a first connecting line, the master control panel is electrically connected with one control panel in each group of control panels through a plurality of second connecting lines respectively, all the control panels in each group of control panels are electrically connected end to end through a plurality of third connecting lines in sequence, the power panel is electrically connected with the master control panel through a fourth connecting line, the first connecting line, the second connecting line and the third connecting line all comprise a first power signal transmission channel, a second power signal transmission channel, a third power signal transmission channel and an image signal transmission channel, and the fourth connecting line comprises a first power signal transmission channel, a second power signal transmission channel and a third power signal transmission channel. The first power signal distribution module, the second power signal distribution module, the third power signal distribution module and the image signal distribution module of each control panel are electrically connected with a back plate through the same first connecting wire, wherein the first power signal distribution module is electrically connected with the back plate through a first power signal transmission channel of the first connecting wire, the second power signal distribution module is electrically connected with the back plate through a second power signal transmission channel of the first connecting wire, the third power signal distribution module is electrically connected with the back plate through a third power signal transmission channel of the first connecting wire, and the image signal distribution module is electrically connected with the back plate through an image signal transmission channel of the first connecting wire. The first power signal distribution module, the second power signal distribution module, the third power signal distribution module and the image signal distribution module of one control panel in each group of control panels are electrically connected with the master control panel through the same second connecting line, wherein the first power signal distribution module is electrically connected with the first master power signal distribution module through a first power signal transmission channel of the second connecting line, the second power signal distribution module is electrically connected with the second master power signal distribution module through a second power signal transmission channel of the second connecting line, the third power signal distribution module is electrically connected with the third master power signal distribution module through a third power signal transmission channel of the second connecting line, and the image signal distribution module is electrically connected with the master control panel through an image signal transmission channel of the second connecting line. In each group of control panels, any two adjacent control panels are electrically connected through a third connecting line, wherein the first power signal distribution modules of the two adjacent control panels are electrically connected through the first power signal transmission channel of the third connecting line, the second power signal distribution modules of the two adjacent control panels are electrically connected through the second power signal transmission channel of the third connecting line, the third power signal distribution modules of the two adjacent control panels are electrically connected through the third power signal transmission channel of the third connecting line, and the image signal distribution modules of the two adjacent control panels are electrically connected through the image signal transmission channel of the third connecting line.
For convenience of illustration in fig. 7, when the control board 4i includes the first power signal distribution module 4i1, the second power distribution module 4i2, the third power distribution module 4i3 and the image signal distribution module 4i4, the first power signal distribution module 4i1 is electrically connected to the backplane 5i through the first power signal transmission channel of one first connection line 01i, the second power signal distribution module 4i2 is electrically connected to the backplane 5i through the second power signal transmission channel of the first connection line 01i, the third power signal distribution module 4i3 is electrically connected to the backplane 5i through the third power signal transmission channel of the first connection line 01i, and the image signal distribution module 4i4 is electrically connected to the backplane 5i through the image signal transmission channel of the first connection line 01 i; the first power signal distribution module 4i1 is electrically connected to the first total power signal distribution module 31 through the first power signal transmission channel of the second connection line 02i, the second power signal distribution module 4i2 is electrically connected to the second total power signal distribution module 32 through the second power signal transmission channel of the second connection line 02i, the third power signal distribution module 4i3 is electrically connected to the third total power signal distribution module 33 through the third power signal transmission channel of the second connection line 02i, and the image signal distribution module 4i4 is electrically connected to the total image signal distribution module 34 through the image signal transmission channel of the second connection line 02 i; the first total power signal distribution module 31 is electrically connected to the first power conversion module 11 through a first power signal transmission channel of the fourth connection line 04i, the second total power signal distribution module 32 is electrically connected to the second power conversion module 12 through a second power signal transmission channel of the fourth connection line 04i, and the third total power signal distribution module 33 is electrically connected to the third power conversion module 13 through a third power signal transmission channel of the fourth connection line 04 i. The working principle of the embodiment corresponding to fig. 7 is as follows:
the first power conversion module 11 is configured to generate a first backlight power signal;
the second power conversion module 12 is configured to generate a second backlight power signal;
the third power conversion module 13 is configured to generate a third backlight power signal;
the first total power signal distribution module 31 is used for distributing the first backlight power signal to the first power signal distribution module of the m control boards, and the first power signal distribution module 4i1 of the ith control board 4i is used for distributing the distributed backlight power signal to the R primary color backlight of the ith back board 5 i;
the second total power signal distribution module 32 is a second power signal distribution module for distributing the second backlight power signal to the m control boards, and the second power signal distribution module 4i2 of the ith control board 4i is used for distributing the distributed backlight power signal to the G primary color backlight of the ith back plate 5 i;
the third total power signal distribution module 33 is used for distributing the third backlight power signal to the third power signal distribution module of the m control boards, and the third power signal distribution module 4i3 of the ith control board 4i is used for distributing the distributed backlight power signal to the B-primary color backlight of the ith back plate 5 i;
the total image signal distribution module 34 is an image signal distribution module for distributing the backlight image signals to the m control boards;
the image signal distribution module 4i4 of the ith control board 4i is used for distributing the distributed backlight image signal to at least one backlight of the ith back plate 5i so as to drive and light the at least one backlight of the ith back plate 5 i.
In a specific application, the first power conversion module, the second power conversion module, and the third power conversion module may be implemented by a power conversion device, for example, a dc-to-dc device, an ac-to-dc device, and/or a rectifier device; the first total power signal distribution module, the second total power signal distribution module, the third total power signal distribution module, the first power signal distribution module, the second power signal distribution module and the third power signal distribution module can be realized by a power management device and/or a voltage stabilizing device, and the total image signal distribution module and the image signal distribution module can be realized by an image processing device.
The structure provided by the embodiment is suitable for the case that each back plate comprises RGB three-primary-color backlight lamps, and can realize independent control of each color backlight lamp on each back plate.
Example four
As shown in fig. 8, in the present embodiment, at least one backlight disposed on each back panel includes RGB three-primary-color backlights, the power panel 1 includes a power conversion module 11, the general control panel 30 includes a general power signal distribution module 31 and a general image signal distribution module 32, and each control panel includes a first voltage conversion module, a second voltage conversion module, a third voltage conversion module and an image signal distribution module;
the total power signal distribution module 31 is used for being electrically connected with the power conversion module 11, and the total image signal distribution module 32 is electrically connected with the image processing unit 2;
based on the embodiment corresponding to fig. 1, when the total control board 30 is electrically connected to the m control boards, the total power signal distribution module 31 is electrically connected to each first voltage conversion module, each second voltage conversion module, and each third voltage conversion module, and the total image signal distribution module 32 is electrically connected to each image signal distribution module.
In specific application, each control panel is electrically connected with one backboard through one first connecting wire, the master control panel is electrically connected with m control panels through m second connecting wires respectively, and the first connecting wire and the second connecting wire respectively comprise a power signal transmission channel, a second power signal transmission channel, a third power signal transmission channel and an image signal transmission channel. The first voltage conversion module, the second voltage conversion module, the third voltage conversion module and the image signal distribution module of each control panel are electrically connected with a backboard through the same first connecting wire, wherein the first voltage conversion module is electrically connected with the backboard through a first power signal transmission channel of the first connecting wire, the second voltage conversion module is electrically connected with the backboard through a second power signal transmission channel of the first connecting wire, the third voltage conversion module is electrically connected with the backboard through a third power signal transmission channel of the first connecting wire, and the image signal distribution module is electrically connected with the backboard through an image signal transmission channel of the first connecting wire. The first voltage conversion module, the second voltage conversion module, the third voltage conversion module and the image signal distribution module of each control panel are electrically connected with the master control panel through the same second connecting wire, wherein the first voltage conversion module is electrically connected with the master power signal distribution module through the first power signal transmission channel of the second connecting wire, the second voltage conversion module is electrically connected with the master power signal distribution module through the second power signal transmission channel of the second connecting wire, the third voltage conversion module is electrically connected with the master power signal distribution module through the third power signal transmission channel of the second connecting wire, and the image signal distribution module is electrically connected with the master control panel through the image signal transmission channel of the second connecting wire.
Based on the embodiment corresponding to fig. 2, when the master control board 30 is electrically connected to one control board and the m control boards are electrically connected end to end in sequence, the master power signal distribution module 31 is electrically connected to the first voltage conversion module, the second voltage conversion module and the third voltage conversion module of one control board, the master image signal distribution module 32 is electrically connected to the image signal distribution module of one control board, the first voltage conversion modules of the m control boards are electrically connected end to end in sequence, the second voltage conversion modules of the m control boards are electrically connected end to end in sequence, the third voltage conversion modules of the m control boards are electrically connected end to end in sequence, and the image signal distribution modules of the m control boards are electrically connected end to end in sequence.
In specific application, each control panel is electrically connected with a backboard through a first connecting line, the master control panel is electrically connected with one control panel through a second connecting line, the m control panels are sequentially and electrically connected end to end through m-1 third connecting lines, and the first connecting line, the second connecting line and the third connecting line respectively comprise a first power signal transmission channel, a second power signal transmission channel, a third power signal transmission channel and an image signal transmission channel. The first voltage conversion module, the second voltage conversion module, the third voltage conversion module and the image signal distribution module of each control panel are electrically connected with a backboard through the same first connecting wire, wherein the first voltage conversion module is electrically connected with the backboard through a first power signal transmission channel of the first connecting wire, the second voltage conversion module is electrically connected with the backboard through a second power signal transmission channel of the first connecting wire, the third voltage conversion module is electrically connected with the backboard through a third power signal transmission channel of the first connecting wire, and the image signal distribution module is electrically connected with the backboard through an image signal transmission channel of the first connecting wire. The first voltage conversion module, the second voltage conversion module, the third voltage conversion module and the image signal distribution module of one control panel are electrically connected with the master control panel through the same second connecting wire, wherein the first voltage conversion module is electrically connected with the master power signal distribution module through the first power signal transmission channel of the second connecting wire, the second voltage conversion module is electrically connected with the master power signal distribution module through the second power signal transmission channel of the second connecting wire, the third voltage conversion module is electrically connected with the master power signal distribution module through the third power signal transmission channel of the second connecting wire, and the image signal distribution module is electrically connected with the master control panel through the image signal transmission channel of the second connecting wire. The first voltage conversion modules of the two adjacent control panels are electrically connected through a first power signal transmission channel of the third connecting line, the second voltage conversion modules of the two adjacent control panels are electrically connected through a second power signal transmission channel of the third connecting line, the third voltage conversion modules of the two adjacent control panels are electrically connected through a third power signal transmission channel of the third connecting line, and the image signal distribution modules of the two adjacent control panels are electrically connected through an image signal transmission channel of the third connecting line.
Based on the embodiment corresponding to fig. 3, when the m control boards are divided into at least two groups, the general control board 30 is electrically connected with one control board in each group of control boards, all the control boards in each group of control boards are electrically connected end to end in sequence, the total power signal distribution module 31 is electrically connected with the first voltage conversion module, the second voltage conversion module and the third voltage conversion module of one control panel in each group of control panels, the total image signal distribution module 32 is electrically connected with the image signal distribution module of one control panel in each group of control panels, all the first voltage conversion modules in each group of control panels are electrically connected end to end in sequence, all the second voltage conversion modules in each group of control panels are electrically connected end to end in sequence, all the third voltage conversion modules in each group of control panels are electrically connected end to end in sequence, and all the image signal distribution modules in each group of control panels are electrically connected end to end in sequence.
In specific application, each control panel is electrically connected with a backboard through a first connecting line, the master control panel is electrically connected with one control panel in each group of control panels through a plurality of second connecting lines respectively, all the control panels in each group of control panels are electrically connected end to end through a plurality of third connecting lines in sequence, and the first connecting line, the second connecting line and the third connecting line respectively comprise a first power signal transmission channel, a second power signal transmission channel, a third power signal transmission channel and an image signal transmission channel. The first voltage conversion module, the second voltage conversion module, the third voltage conversion module and the image signal distribution module of each control panel are electrically connected with a backboard through the same first connecting wire, wherein the first voltage conversion module is electrically connected with the backboard through a first power signal transmission channel of the first connecting wire, the second voltage conversion module is electrically connected with the backboard through a second power signal transmission channel of the first connecting wire, the third voltage conversion module is electrically connected with the backboard through a third power signal transmission channel of the first connecting wire, and the image signal distribution module is electrically connected with the backboard through an image signal transmission channel of the first connecting wire. The first voltage conversion module, the second voltage conversion module, the third voltage conversion module and the image signal distribution module of one control panel in each group of control panels are electrically connected with the master control panel through the same second connecting line, wherein the first voltage conversion module is electrically connected with the master power signal distribution module through the first power signal transmission channel of the second connecting line, the second voltage conversion module is electrically connected with the master power signal distribution module through the second power signal transmission channel of the second connecting line, the third voltage conversion module is electrically connected with the master power signal distribution module through the third power signal transmission channel of the second connecting line, and the image signal distribution module is electrically connected with the master image signal distribution module through the image signal transmission channel of the second connecting line. In each group of control panels, any two adjacent control panels are electrically connected through a third connecting line, wherein the first voltage conversion modules of the two adjacent control panels are electrically connected through a first power signal transmission channel of the third connecting line, the second voltage conversion modules of the two adjacent control panels are electrically connected through a second power signal transmission channel of the third connecting line, the third voltage conversion modules of the two adjacent control panels are electrically connected through a third power signal transmission channel of the third connecting line, and the image signal distribution modules of the two adjacent control panels are electrically connected through image signal transmission channels of the third connecting line.
For convenience of illustration in fig. 8, when the control board 4i includes the first voltage conversion module 4i1, the second voltage conversion module 4i2, the third voltage conversion module 4i3 and the image signal distribution module 4i4, the first voltage conversion module 4i1 is electrically connected to the backplane 5i through the first power signal transmission channel of one first connection line 01i, the second voltage conversion module 4i2 is electrically connected to the backplane 5i through the second power signal transmission channel of the first connection line 01i, the third voltage conversion module 4i3 is electrically connected to the backplane 5i through the third power signal transmission channel of the first connection line 01i, and the image signal distribution module 4i4 is electrically connected to the backplane 5i through the image signal transmission channel of the first connection line 01 i; the first voltage conversion module 4i1 is electrically connected to the main power signal distribution module 31 through the first power signal transmission channel of the second connection line 02i, the second voltage conversion module 4i2 is electrically connected to the main power signal distribution module 31 through the second power signal transmission channel of the second connection line 02i, the third voltage conversion module 4i3 is electrically connected to the main power signal distribution module 31 through the third power signal transmission channel of the second connection line 02i, and the image signal distribution module 4i4 is electrically connected to the main image signal distribution module 32 through the image signal transmission channel of the second connection line 02 i.
The working principle of the embodiment corresponding to fig. 8 is as follows:
the power conversion module 11 is used for generating a backlight power signal;
the total power signal distribution module 31 is used for distributing the backlight power signal to a first voltage conversion module, a second voltage conversion module and a third voltage conversion module of the m control boards;
the first voltage conversion module 4i1 of the ith control board 4i is used for converting the distributed backlight power supply signal into a driving voltage suitable for the R primary color backlight of the ith back plate 5 i;
the second voltage conversion module 4i2 of the ith control board 4i is used for converting the distributed backlight power supply signal into a driving voltage suitable for the G-primary color backlight of the ith back plate 5 i;
the third voltage conversion module 4i3 of the ith control board 4i is used for converting the distributed backlight power supply signal into a driving voltage suitable for the B-primary color backlight of the ith back plate 5 i;
the total image signal distribution module 32 is an image signal distribution module for distributing the backlight image signals to the m control boards;
the image signal distribution module 4i4 of the ith control board 4i is used for distributing the distributed backlight image signal to at least one backlight of the ith back plate 5i so as to drive and light the at least one backlight of the ith back plate 5 i.
In a specific application, the power conversion module may be implemented by a power conversion device, for example, a dc-to-dc device, an ac-to-dc device, and/or a rectifier device; the total power signal distribution module may be implemented by a power management device and/or a voltage regulator device, the total image signal distribution module and the image signal distribution module may be implemented by an image processing device, and the first voltage conversion module, the second voltage conversion module, and the third voltage conversion module may be implemented by a voltage conversion device.
The structure provided by the embodiment is suitable for the case that each back plate comprises RGB three-primary-color backlight lamps, and can realize independent control of each color backlight lamp on each back plate.
EXAMPLE five
The present embodiment provides a display driving module applied to a display device, including the power panel 1, the image processing unit 2, and the dynamic backlight driving module 3 in any one of the first to fourth embodiments.
As shown in fig. 9, in this embodiment, the display driving module further includes a video signal interface 6 and a liquid crystal control panel 7, the display device further includes a liquid crystal screen 8, and the image processing unit 2 includes an image processing module 21;
the image processing module 21 is electrically connected with a general image signal distribution module (not shown in the figure), the video signal interface 6 and the liquid crystal control panel 7 of the general control panel 30, and the liquid crystal control panel 7 is used for being electrically connected with the liquid crystal screen 8.
The working principle of the display driving module provided by the embodiment is as follows:
the image processing module 21 is configured to input a video signal through the video signal interface 6 and generate a backlight image signal and a liquid crystal image signal according to the video signal;
the liquid crystal control board 7 is used for generating scanning signals and data signals according to liquid crystal image signals so as to drive the liquid crystal screen to display 8 liquid crystal images.
In a specific application, the video signal processing interface may include an HDMI interface, a VGA interface, a DVI interface, and the like. The image processing module may specifically be an image processing chip, for example, a scaler chip. The liquid crystal Control panel includes a screen image processing unit (TCON), a gamma (gamma) chip, a source driving chip, a gate driving chip, and the like.
As shown in fig. 10, in the present embodiment, the image processing module 21 includes a backlight image generation module 211 and a liquid crystal image compensation module 212;
the backlight image generating module 211 is electrically connected with the video signal interface 6, the liquid crystal image compensating module 212 and the master control board 30, and the liquid crystal image compensating module 312 is electrically connected with the video signal interface 6 and the liquid crystal control board 7;
the backlight image generating module 211 is configured to input a video signal through the video signal interface 6, and generate a backlight image signal according to the video signal;
the liquid crystal image compensation module 212 is configured to input the backlight image signal and input a video signal through the video signal interface 6, so as to generate a liquid crystal image signal according to the video signal and the backlight image signal.
In a specific application, the backlight image generation module and the liquid crystal image compensation module can be both software program modules in the image processing module, and can also be hardware function partitions in the image processing module.
As shown in fig. 10, in the present embodiment, the image processing unit 2 further includes a video signal transmission interface 22;
the liquid crystal image compensation module 212 is electrically connected to the liquid crystal control board 7 through the video signal transmission interface 22.
In one embodiment, the video signal transmission interface is an LVDS interface or an VBY1 interface.
In the embodiment, the video signal is processed into the backlight image signal by the backlight image generation module to drive and control the backlight lamp, the video signal and the backlight image signal are processed into the scanning signal and the data signal by the liquid crystal image compensation module and then transmitted to the liquid crystal control panel through the video signal transmission interface to drive the liquid crystal screen to display the liquid crystal image, so that the backlight lamp and the liquid crystal screen can be synchronously controlled, the backlight image of the back plate and the liquid crystal image of the liquid crystal screen are kept synchronous, and the dynamic display effect of the display device is improved.
EXAMPLE six
As shown in fig. 11, the present embodiment provides a dynamic backlight driving method implemented based on the dynamic backlight driving module in any one of the first to fourth embodiments or the display driving module in the fifth embodiment, where the dynamic backlight driving method includes:
step S101, distributing the backlight power supply signal and the backlight image signal to the m control panels through the master control panel;
step S102, distributing the distributed backlight power signal and backlight image signal to at least one backlight of the ith back plate through the ith control board, so as to drive the at least one backlight of the ith back plate to display a backlight image.
In a specific application, step S101 may be executed by the general control board, executed by a logic circuit structure or device in the general control board, or executed by the general control board controlled by the processor of the display device; step S102 may be performed by the control board, by a logic circuit structure or device in the control board, or by the control board being controlled by a processor of the display apparatus.
In a particular application, the processor of the display device may be a central processing unit, but may also be other general purpose processors, digital signal processors, application specific integrated circuits, field programmable gate arrays or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The processor may also be a logic circuit structure or device in a liquid crystal control panel of the display apparatus, for example, a screen image processing unit.
In one embodiment, each control board includes a power signal distribution module and an image signal distribution module;
step S102 includes:
distributing the distributed backlight power supply signal to at least one backlight lamp of the ith back plate through a power supply signal distribution module of the ith control plate;
the image signal distribution module of the ith control board is used for distributing the distributed backlight image signals to at least one backlight lamp of the ith back plate so as to drive and light the at least one backlight lamp of the ith back plate.
In one embodiment, the master control board comprises a master power signal distribution module and a master image signal distribution module;
the step S101 includes:
distributing the backlight power supply signals to the m control panels through a total power supply signal distribution module;
and distributing the backlight image signals to the m control panels through the total image signal distribution module.
In one embodiment, the master control board comprises a first master power signal distribution module, a second master power signal distribution module, a third master power signal distribution module and a master image signal distribution module, and each control board comprises a first power signal distribution module, a second power distribution module, a third power distribution module and an image signal distribution module;
step S101 includes:
the first backlight power supply signal is distributed to the first power supply signal distribution modules of the m control panels through the first total power supply signal distribution module;
a second power signal distribution module for distributing the second backlight power signal to the m control panels through a second main power signal distribution module;
a third power signal distribution module for distributing the third backlight power signal to the m control panels through the third main power signal distribution module;
the image signal distribution module distributes the backlight image signals to the m control panels through the total image signal distribution module;
the step S102 includes:
distributing the distributed backlight power supply signals to R primary color backlight lamps of an ith back plate through a first power supply signal distribution module of the ith control plate;
distributing the distributed backlight power supply signals to G primary color backlight lamps of an ith back plate through a second power supply signal distribution module of the ith control plate;
distributing the distributed backlight power supply signals to the B primary color backlight lamps of the ith back plate through a third power supply signal distribution module of the ith control plate;
the image signal distribution module of the ith control board distributes the distributed backlight image signals to at least one backlight lamp of the ith back plate so as to drive and light the at least one backlight lamp of the ith back plate.
In one embodiment, the master control board comprises a master power signal distribution module and a master image signal distribution module, and each control board comprises a first voltage conversion module, a second voltage conversion module, a third voltage conversion module and an image signal distribution module;
step S101 includes:
distributing the backlight power supply signal to a first voltage conversion module, a second voltage conversion module and a third voltage conversion module of the m control panels through a total power supply signal distribution module;
the image signal distribution module distributes the backlight image signals to the m control panels through the total image signal distribution module;
step S102 includes:
converting the distributed backlight power supply signal into a driving voltage suitable for an R primary color backlight lamp of an ith back plate through a first voltage conversion module of the ith control plate;
converting the distributed backlight power supply signal into a driving voltage suitable for a G primary color backlight lamp of an ith back plate through a second voltage conversion module of the ith control plate;
converting the distributed backlight power supply signal into a driving voltage suitable for a B primary color backlight lamp of an ith back plate through a third voltage conversion module of the ith control plate;
and distributing the distributed backlight image signal to at least one backlight lamp of the ith back plate through the image signal distribution module of the ith control plate so as to drive and light the at least one backlight lamp of the ith back plate.
In this embodiment, the total control board distributes the backlight power signal and the backlight image signal to m control boards, and each control board distributes the distributed backlight power signal and the distributed backlight image signal to at least one backlight of one backplane to individually drive and light at least one backlight of each backplane, thereby achieving a dynamic backlight effect.
EXAMPLE seven
As shown in fig. 12, the present embodiment provides a display device 100, which includes the display driving module in the fifth embodiment, m backplates 51 to 5m and a liquid crystal panel 8 which are spliced in an array form to form a backlight array.
Fig. 12 only shows an exemplary structure of the display device 100 implemented based on the structure of the dynamic backlight driving module 3 in the embodiment corresponding to fig. 1.
In a specific application, the structure of the display device may be implemented based on the structure of the dynamic backlight module in any one of the first to fourth embodiments.
The embodiment provides a display device comprising a display driving module, m back plates spliced in an array form to form a backlight plate array and a liquid crystal screen, wherein each control plate in the display driving module distributes distributed backlight power signals and backlight image signals to at least one backlight of one back plate so as to independently drive and light at least one backlight of each back plate, so that a dynamic backlight effect can be realized; the video signal is processed into a backlight image signal through the backlight image generation module to drive and control the backlight lamp, the video signal and the backlight image signal are processed into a scanning signal and a data signal through the liquid crystal image compensation module of the display driving module, and the scanning signal and the data signal are transmitted to the liquid crystal control panel through the video signal transmission interface to drive the liquid crystal screen to display a liquid crystal image.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims (10)

1. A dynamic backlight driving module is characterized by being applied to display equipment, wherein the display equipment comprises a power panel, an image processing unit and m back panels, the dynamic backlight driving module comprises a master control panel and m control panels, and the m back panels are spliced in an array form to form a backlight panel array;
the m control panels are divided into at least two groups, the master control panel is electrically connected with one control panel in each group of control panels, all the control panels in each group of control panels are electrically connected end to end in sequence, the ith control panel in the m control panels is used for being electrically connected with the ith backboard in the m backboards, and the master control panel is used for being electrically connected with the power panel and the image processing unit;
the power panel is used for generating backlight power signals, the image processing unit is used for generating backlight image signals, and the master control panel is used for distributing the backlight power signals and the backlight image signals to the m control panels; the ith control board is used for distributing the distributed backlight power supply signal and backlight image signal to at least one backlight lamp of the ith back plate so as to drive and light the at least one backlight lamp of the ith back plate; the backlight power supply signal is used for supplying power to the backlight lamp to enable the backlight lamp to be lightened; the backlight image signal is used for controlling the brightness of the backlight lamps, so that all the backlight lamps on each back plate display backlight images together;
wherein m is not less than 2, i =1, 2, …, m and i are integers.
2. The dynamic backlight driving module of claim 1, wherein the control board comprises a power signal distribution module and an image signal distribution module; the master control board is in communication and electric connection with the power signal distribution module and the image signal distribution module of one control board in each group of control boards, the power signal distribution modules of all the control boards in each group of control boards are in head-tail electric connection in sequence, and the image signal distribution modules of all the control boards in each group of control boards are in head-tail electric connection in sequence;
the power signal distribution module of the ith control board is used for distributing the distributed backlight power signals to at least one backlight lamp of the ith back board, and the image signal distribution module of the ith control board is used for distributing the distributed backlight image signals to at least one backlight lamp of the ith back board so as to drive and light at least one backlight lamp of the ith back board.
3. The dynamic backlight driving module according to claim 2, wherein at least one backlight lamp disposed on the back plate is a monochrome backlight lamp, the power board comprises a power conversion module, and the total control board comprises a total power signal distribution module and a total image signal distribution module;
the total power signal distribution module is used for being electrically connected with the power conversion module, and the total image signal distribution module is used for being electrically connected with the image processing unit;
the total power signal distribution module and the total image signal distribution module are respectively and correspondingly electrically connected with the power signal distribution module and the image signal distribution module of one control board in each group of control boards one by one;
the power conversion module is used for generating the backlight power signals, the total power signal distribution module is used for distributing the backlight power signals to the m control boards, and the total image signal distribution module is used for distributing the backlight image signals to the m control boards.
4. The dynamic backlight driving module according to claim 1, wherein the at least one backlight disposed on the back plate comprises RGB three-primary-color backlights, the power board comprises a first power conversion module, a second power conversion module and a third power conversion module, the total control board comprises a first total power signal distribution module, a second total power signal distribution module, a third total power signal distribution module and a total image signal distribution module, and the control board comprises a first power signal distribution module, a second power signal distribution module, a third power signal distribution module and an image signal distribution module;
the first total power signal distribution module, the second total power signal distribution module and the third total power signal distribution module are respectively used for being electrically connected with the first power conversion module, the second power conversion module and the third power conversion module in a one-to-one correspondence manner, and the total image signal distribution module is used for being electrically connected with the image processing unit;
the first total power signal distribution module, the second total power signal distribution module, the third total power signal distribution module and the total image signal distribution module are respectively and electrically connected with one of each group of control panels in a one-to-one correspondence manner, all the first power signal distribution modules in each group of control panels are electrically connected in sequence from head to tail, all the second power signal distribution modules in each group of control panels are electrically connected in sequence from head to tail, all the third power signal distribution modules in each group of control panels are electrically connected in sequence from head to tail, and all the image signal distribution modules in each group of control panels are electrically connected in sequence from head to tail.
5. The dynamic backlight driving module according to claim 1, wherein the at least one backlight lamp disposed on the back plate comprises RGB three-primary-color backlight lamps, the power board comprises a power conversion module, the general control board comprises a general power signal distribution module and a general image signal distribution module, and the control board comprises a first voltage conversion module, a second voltage conversion module, a third voltage conversion module and an image signal distribution module;
the total power signal distribution module is used for being electrically connected with the power conversion module, and the total image signal distribution module is used for being electrically connected with the image processing unit; the total power signal distribution module is electrically connected with one of each group of control panels, the first voltage conversion module, the second voltage conversion module and the third voltage conversion module of each control panel are electrically connected, the total image signal distribution module is electrically connected with one of each group of control panels, all the first voltage conversion modules in each group of control panels are electrically connected in sequence from head to tail, all the second voltage conversion modules in each group of control panels are electrically connected in sequence from head to tail, all the third voltage conversion modules in each group of control panels are electrically connected in sequence from head to tail, and all the image signal distribution modules in each group of control panels are electrically connected in sequence from head to tail.
6. A display driving module applied to a display device, the display driving module comprising the dynamic backlight driving module as claimed in any one of claims 1 to 5, the power board and the image processing unit.
7. The display driving module of claim 6, wherein the display device further comprises a liquid crystal screen, the display driving module further comprises a video signal interface and a liquid crystal control panel, and the image processing unit comprises an image processing module;
the image processing module is electrically connected with the master control board, the video signal interface and the liquid crystal control board, and the liquid crystal control board is used for being electrically connected with the liquid crystal screen;
the image processing module is used for inputting a video signal through the video signal interface and generating a backlight image signal and a liquid crystal image signal according to the video signal;
the liquid crystal control panel is used for generating scanning signals and data signals according to the liquid crystal image signals so as to drive the liquid crystal screen to display liquid crystal images.
8. The display driving module of claim 7, wherein the image processing module comprises a backlight image generation module and a liquid crystal image compensation module;
the backlight image generation module is electrically connected with the video signal interface, the liquid crystal image compensation module and the master control board, and the liquid crystal image compensation module is electrically connected with the video signal interface and the liquid crystal control board;
the backlight image generation module is used for inputting a video signal through the video signal interface and generating the backlight image signal according to the video signal;
the liquid crystal image compensation module is used for inputting the backlight image signal and inputting a video signal through the video signal interface so as to generate a liquid crystal image signal according to the video signal and the backlight image signal.
9. The display driving module of claim 8, wherein the image processing unit further comprises a video signal transmission interface;
the liquid crystal image compensation module is electrically connected with the liquid crystal control panel through the video signal transmission interface.
10. A dynamic backlight driving method, which is implemented based on the dynamic backlight driving module set of any one of claims 1 to 5 or the display driving module set of any one of claims 6 to 9, the dynamic backlight driving method comprising:
distributing the backlight power supply signal and the backlight image signal to the m control panels through the master control panel;
distributing the distributed backlight power supply signal and backlight image signal to at least one backlight lamp of the ith back plate through the ith control board so as to drive and light the at least one backlight lamp of the ith back plate.
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