CN111063317B - Display control system, display module and display control card - Google Patents

Abstract

The embodiment of the invention discloses a display control system, which comprises: a frame; the display control card is fixed on the frame and is provided with a first board-to-board connector; and the display module is provided with a second plate-to-plate connector and a structural member. The display module is connected with the display control card through the second connector and the first connector in an inserting mode to form electrical connection, and the display module is installed and fixed on the frame through the structural part. The embodiment of the invention can reduce the number of data signal lines between the display module and the display control card, improve the convenience of disassembly, assembly and connection of the display module, and improve the signal stability and the anti-interference performance. In addition, the embodiment of the invention provides a structure of a display module and a display control card suitable for the display control system.

Description

Display control system, display module and display control card

Technical Field

The invention relates to the technical field of display, in particular to a display control system, a display module and a display control card.

Background

In the prior art, a scanning card is used for dot screen, and dot screen signals are parallel driving signals and are used for driving a driving circuit of a display screen. If the existing display control card outputs a plurality of groups of display data and display control signals, at least hundreds of transmission lines with TTL levels are connected with the display module. The cascade between the display module assembly is also multistage cascade through TTL signal, connect through two winding displacement and double connector between every display module assembly and the display control card for the connecting wire quantity between display module assembly and the display control card is huge, leads to the dismouting of display module assembly and connecting wire to maintain very difficultly, and signal transmission's stability is low simultaneously, and the interference killing feature is weak.

Disclosure of Invention

The embodiment of the invention provides a display control system, a display module and a display control card, which can reduce the number of data signal lines between the display module and the display control card, improve the convenience of disassembly, assembly and connection of the display module and/or improve the stability and anti-interference of signals.

Specifically, an embodiment of the present invention provides a display control system, including: a frame; the display control card is fixed on the frame and is provided with a first board-to-board connector; and the display module is provided with a second plate-to-plate connector and a structural member. The display module is connected with the display control card through the second connector and the first connector in an inserting mode to form electrical connection, and the display module is installed and fixed on the frame through the structural part.

In one embodiment of the invention, the structural member includes a magnet, and the display module is fixed on the frame by magnetic attraction of the structural member.

In an embodiment of the invention, the magnet is disposed on a side surface of the display module, a protrusion is disposed on a side surface of the frame, the protrusion has a metal portion, and the display module and the frame are fixed by magnetic attraction between the magnet and the metal portion.

In one embodiment of the invention, the structural member comprises a groove-shaped seat and a pushing and withdrawing mechanism positioned in the groove-shaped seat, the frame is provided with a protruding structure, and the display module and the frame are fixedly installed through the clamping of the pushing and withdrawing mechanism in the groove-shaped seat and the protruding structure; or the structural part comprises a protruding structure, the frame is provided with a groove-shaped seat and a pushing and withdrawing mechanism positioned in the groove-shaped seat, and the display module and the frame are fixedly installed through the protruding structure and the pushing and withdrawing mechanism in the groove-shaped seat in a clamping mode.

In an embodiment of the invention, the structural member includes a threaded connector, a through hole is formed in the display module, a screw hole is formed in the frame, and the threaded connector penetrates through the through hole and is in threaded coupling with the screw hole to mount and fix the display module on the frame.

In one embodiment of the present invention, each of the first board-to-board connector and the second board-to-board connector includes serial differential signal transmission pins for transmitting serial display driving data including a plurality of sets of display data and display control signals and power signal transmission pins for transmitting power signals.

In one embodiment of the present invention, the first board-to-board connector includes a first connection seat and a plurality of pins located in the first connection seat, the second board-to-board connector includes a second connection seat, a plurality of springs and a plurality of pins, the second connection seat has a plurality of through holes, the plurality of springs are respectively located in the plurality of through holes, each pin has a first end and an opposite second end, the first end contacts with a corresponding one of the plurality of springs, and the second end extends out of a corresponding one of the plurality of through holes to contact with a corresponding one of the plurality of pins of the first board-to-board connector; or first board to board connector includes first connecting seat, a plurality of spring and a plurality of thimble, be provided with a plurality of through-holes on the first connecting seat, a plurality of springs are located respectively in a plurality of through-holes, each the thimble has first end and relative second end, first end with a corresponding spring contact in a plurality of springs, second board to board connector includes the second connecting seat and is located a plurality of stitches in the second connecting seat, the second end stretch out a corresponding through-hole in a plurality of through-holes with the second board is to the board connector a corresponding stitch contact in a plurality of stitches.

In an embodiment of the present invention, the display control card includes a programmable device, and the programmable device is configured to perform image processing and compression coding processing on input image data to obtain serial display driving data, and output the serial display driving data to the second board-to-board connector through the first board-to-board connector.

In an embodiment of the present invention, the display control card includes a programmable device and a signal converter connected to the programmable device and the first board-to-board connector, the programmable device is configured to perform image processing on input image data to obtain multiple sets of display data and generate a display control signal, and the signal converter is configured to perform compression coding on part or all of the sets of display data and the display control signal to obtain serial display driving data, and output the serial display driving data to the second board-to-board connector through the first board-to-board connector.

In addition, an embodiment of the present invention provides a display module, including: the display driving circuit is connected between the signal processor and the pixel unit; a board-to-board connector disposed on the circuit board and connecting the signal processor and the display driving circuit, wherein the board-to-board connector is configured to receive serial display driving data and a power signal to provide the serial display driving data and the power signal to the signal processor and the power signal to the display driving circuit; and the structural part is arranged on the circuit board and used for installing and fixing the display module on a target object.

In one embodiment of the present invention, the board-to-board connector includes a connection socket and a plurality of pins in the connection socket, a part of the plurality of pins serving as serial differential signal transmission pins for transmitting the serial display driving data, and another part of the plurality of pins serving as power signal transmission pins for transmitting the power signal; or the board-to-board connector includes a connecting seat, a plurality of springs and a plurality of thimbles, be provided with a plurality of through-holes on the connecting seat, a plurality of springs are located respectively in a plurality of through-holes, each thimble has first end and relative second end, first end with a corresponding spring contact in a plurality of springs, the second end stretches out a corresponding through-hole in a plurality of through-holes, some thimbles in a plurality of thimbles are used for transmitting as serial differential signal transmission stitch serial display drive data, and another part thimble is used for transmitting as power signal transmission stitch power signal.

In one embodiment of the invention, the structural member comprises a magnet, or a groove-shaped seat and a pushing and withdrawing mechanism positioned in the groove-shaped seat, or a protruding structure which can be clamped with the pushing and withdrawing mechanism, or a threaded connecting piece.

In addition, an embodiment of the present invention provides a display control card, including: a programmable device; the board-to-board connector is connected with the programmable device and comprises a serial differential signal transmission pin and a power signal transmission pin; the serial differential signal transmission pin is used for transmitting serial display driving data containing multiple groups of display data and display control signals, and the power signal transmission pin is used for transmitting power signals.

In an embodiment of the present invention, the programmable device is configured to perform image processing on input image data to obtain multiple sets of display data and locally generate the display control signal, and perform compression coding on the multiple sets of display data and the display control signal to obtain serial display driving data, and transmit the serial display driving data to the serial differential signal transmission pins of the board-to-board connector.

In one embodiment of the present invention, the display control card further comprises a signal converter connected between the programmable device and the board-to-board connector; the programmable device is used for carrying out image processing on input image data to obtain a plurality of groups of display data, generating the display control signals and the control clock, and outputting the plurality of groups of display data, the display control signals and the control clock in a parallel signal form; the signal converter receives the control of the control clock, and performs compression coding processing on part or all of the groups of display data and the display time sequence control signal to obtain the serial display driving data, and the serial display driving data is transmitted to the serial differential signal transmission pins of the board-to-board connector.

In one embodiment of the present invention, the board-to-board connector includes a connection socket and a plurality of pins located in the connection socket, a part of the plurality of pins being the serial differential signal transmission pins, and another part of the plurality of pins being the power signal transmission pins; or the board-to-board connector comprises a connecting seat, a plurality of springs and a plurality of ejector pins, wherein the connecting seat is provided with a plurality of through holes, the plurality of springs are respectively positioned in the plurality of through holes, each ejector pin is provided with a first end and a second end opposite to the first end, the first end is in contact with one corresponding spring in the plurality of springs, the second end extends out of one corresponding through hole in the plurality of through holes, one part of the ejector pins in the plurality of ejector pins serve as the serial differential signal transmission pins, and the other part of the ejector pins serve as the power signal transmission pins.

The above technical solution may have one or more of the following advantages: according to the embodiment of the invention, the display module can be quickly installed and fixed on the frame by arranging the structural member. The connector which can be directly inserted is arranged between the display module and the display control card, so that the convenience of disassembly, assembly and connection of the display module is improved. The display control card and the display module adopt serial differential data transmission, so that the number of transmission signal lines can be reduced, and the stability and the anti-interference performance of signals are improved. Moreover, the number of transmission signal lines can be reduced, the design size of a connector is reduced, the maintenance and the disassembly and the assembly are convenient, the stability and the anti-interference performance of signals are improved, and the EMC performance and the bandwidth utilization rate are improved by redesigning the internal structure of the display control card.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced 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 based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a display control system according to an embodiment of the present invention;

FIG. 2 is a block diagram of a portion of the structure of the display control system of FIG. 1;

FIG. 3 is a schematic diagram of another structure of a display control card of the display control system of FIG. 1;

FIG. 4a is a schematic diagram illustrating the connection relationship and structure of the pair of connectors in the control system shown in FIG. 1;

FIG. 4b is a schematic diagram illustrating the connection relationship between the pairs of connectors in the control system shown in FIG. 1 and another configuration;

FIG. 5 is a schematic diagram illustrating a relative position relationship among a display control card, a display module and a frame of a display control system according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a display control card according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of another display control card according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a display control card according to another embodiment of the present invention;

fig. 9 is a schematic structural diagram of another display control system according to an embodiment of the present invention.

[ description of main element symbols ]:

10. 90: display control system

100. 60, 70, 80, 95: display control card

200. 93: display module

300: frame structure

130. 210: connector with a locking member

250: structural member

110. 61, 711, 811: programmable device

220: signal processor

230: display driving circuit

240: pixel unit

131. 211: connecting seat

132. 212, and (3): stitch pin

211. 131: connecting seat

212. 132: spring

213. 133: thimble

2131. 1331: first end

2132. 1332: second end

214. 134: through hole

A: front side

B: back side of the panel

63. 733, 833: signal converter

65. 731, 831, 931, 951: board-to-board connector

71. 81: scanning card

73. 83: switching card

735. 835: connecting piece

91: front-end controller

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.

First embodiment

Referring to fig. 1, fig. 2 and fig. 4a, fig. 1 is a schematic structural diagram of a display control system according to a first embodiment of the present invention, fig. 2 is a schematic diagram of a part of structural modules of the display control system in fig. 1, and fig. 4a is a schematic structural diagram and a connection relationship between paired connectors in the display control system in fig. 1. The display control system 10 of the present embodiment includes: a display control card 100, a display module 200 and a frame 300.

Specifically, display control card 100 is fixed to frame 300. Display control card 100 includes, for example, programmable device 110 and connector 130. The programmable device 110 is implemented, for example, by an internal algorithm logic, and is configured to perform image processing on input image data to obtain multiple sets of display data and locally generate a display control signal, perform compression coding on the multiple sets of display data and the display control signal to obtain serial display driving data, and output the serial display driving data through the connector 130.

The input image data may be image data received by the programmable device 110 and transmitted by a display controller (e.g., a transmission card) via an upper computer. The image processing is, for example, processing of performing Gamma (Gamma) conversion, gradation extraction, and even correction such as luminance or luminance-chrominance correction on image data. Here, the gradation extraction is, for example, an operation such as Bit separation, that is, the gradation extraction is typically a manner in which gradation data after correction processing is subjected to a separation operation per Bit to convert the gradation data into a manner in which different implementation weights are given to different bits. The display control signal includes, for example, a line scan signal, a clock signal, a latch signal, and an enable control signal (embodiments of the present invention are not limited thereto, and other display control signals, such as a line blank signal, may be generated as needed). The plurality of sets of display data may include, for example, a plurality of sets of RGB data (for example, 32 sets of RGB data, 16 sets of RGB data, or 8 sets of RGB data), or other display data, and are set according to the display requirements of the display module 200, for example, RGBY data and RGBW data.

The connector 130 includes, for example, a serial differential signal transmission pin and a power signal transmission pin; the serial differential signal transmission pin is used for transmitting serial display driving data, and the power signal transmission pin is used for transmitting a power signal. Specifically, as shown in fig. 4a, the connector 130 includes a connection holder 131 and a plurality of pins 132 located in the connection holder 131, a part of the pins 132 being serial differential signal transmission pins, and a part of the pins 132 being power signal transmission pins.

In addition, as shown in fig. 3, there may be a plurality of connectors 130 disposed on the display control card 100, and the display modules 200 are plugged into some or all of the connectors 130 in a one-to-one correspondence. For example, the number of the connectors 130 may be 8, and the number of the display modules 200 may be any natural number greater than or equal to 1 and less than or equal to 8. When the number of the display modules 200 is n and n is less than 8, the n display modules 200 are respectively in one-to-one corresponding insertion connection with the n connectors 130, that is, part of the display modules are in one-to-one corresponding insertion connection; when the number of the display modules 200 is 8, the 8 display modules 200 are respectively plugged with the 8 connectors 130 one by one, that is, all the display modules are plugged one by one. Here, the programmable device 110 is implemented, for example, by an internal arithmetic logic, for performing image processing on input image data to obtain a plurality of sets of display data and locally generate a display control signal, and performing compression coding processing on the plurality of sets of display data and the display control signal to obtain a plurality of paths of serial display driving data, and outputting the plurality of paths of serial display driving data through the plurality of connectors 130, respectively. It should be noted here that, based on the difference in the number of pairs of serial differential signal transmission pins in the connector 130, the connector 130 may output only one path of serial display driving data, or may output two or more paths of serial display driving data.

As shown in fig. 1 and 2, the display module 200 includes, for example, a connector 210, a signal processor 220, a display driving circuit 230, a pixel unit 240, a structural member 250, and a circuit board. The connector 210, the signal processor 220, the display driving circuit 230, the pixel unit 240, and the structural member 250 are disposed on a circuit board.

The connector 210 connects the signal processor 220 and the display driving circuit 230. The connector 210 is directly plugged with the connector 130 on the display control card 100 to electrically connect the display module 200 with the display control card 100 so as to obtain the serial display driving data and the power signal from the display control card 100; in short, the display control card 100 and the display module 200 are connected in a board-to-board manner. The structure of the connector 210 matches the structure of the connector 130, which also includes a serial differential signal transmission pin and a power signal transmission pin for receiving serial display driving data and a power signal, respectively. The connector 210 connects the signal processor 220 to provide the signal processor 220 with serial display driving data and to supply power to the signal processor 220; the connector 210 connects the display driving circuit 230 to supply power to the display driving circuit 230, that is, to supply a power supply signal. The connector 210 and the connector 130 are arranged in pairs and can be directly plugged; specifically, for example, as shown in fig. 4a, the connector 210 is a pogo pin connector, which includes a connection seat 211, a plurality of springs 212 and a plurality of ejector pins 213, wherein the connection seat 211 is provided with a plurality of through holes 214. A plurality of springs 212 are respectively disposed within the plurality of through holes 214, each thimble 213 having a first end 2131 and an opposite second end 2132, the first end 2131 contacting a corresponding one of the plurality of springs 212, the second end 2132 extending through a corresponding one of the plurality of through holes 214 to contact a corresponding one of the plurality of pins 132 of the connector 130 to form an electrical connection.

The signal processor 220 is connected between the connector 210 and the display driving circuit 230, and is configured to perform deserialization on the received serial display driving data to obtain multiple sets of parallel display data and display control signals, and transmit the display data and display control signals to the display driving circuit 230. The signal processor 220 includes, for example, a DS92LV2422 deserializer chip, but the embodiment of the invention is not limited thereto.

The display drive circuit 230 includes, for example, a row decoder circuit and a column driver circuit, and even a row discharge circuit. Wherein, the row decoding circuit comprises row decoders such as 3-8 decoders and a row selection switch array; the column driving circuit includes, for example, a plurality of constant current source driving chips like MBI5025 series chips and the like; the row discharge circuit is used to discharge the parasitic capacitance on the row lines. The display driving circuit 230 drives and controls the plurality of pixel units 240 according to the parallel sets of display data and display control signals.

The pixel units 240 are connected to the display driving circuit 230, and the number of the pixel units is usually plural. Each pixel cell 240 includes at least one light emitting element, such as an LED. Specifically, each pixel unit 240 may include, for example, a combination of light emitting elements of any one or more colors of a red light emitting element, a green light emitting element, and a blue light emitting element, and of course, the colors of the respective light emitting elements are not limited to the three primary colors of RGB, but may be four primary colors such as RGBY, or other multiple colors. More specifically, the pixel units 240 are arranged in rows and columns, for example, and are connected to the row decoding circuit via row lines and the column driving circuit via column lines, and the row discharging circuit is connected to the row lines, for example, to discharge parasitic capacitances on the row lines.

The structural member 250 is disposed on the circuit board of the display module 200. The display module 200 is fixed to a target object such as a frame 300 by a structural member 250. The structural member 250 includes a magnet, for example, so that the display module 200 is attached and fixed to the frame 300 by magnetic force of the magnet. Typically, the number of the magnets may be four, and the magnets are distributed at four corners of the display module 200; of course, the present invention is not limited thereto, and the number of the magnets may be flexibly set according to actual needs, as long as the purpose of mechanically fixing the display module 200 to the frame 300 can be achieved.

The frame 300 is used for supporting and fixing the display control card 100 and the display module 200. The material of the frame 300 is, for example, steel, plastic, or other material. The position of the frame 300 corresponding to the magnet is a metal part so that the structural member 250 can attach, mount and fix the display module 200 to the frame 300 by magnetic force. When the structural member 250 adsorbs, installs and fixes the display module 200 on the frame 300, the connector 130 and the connector 210 are in a plugging state; when the display module 200 is detached from the frame 300, the connector 130 and the connector 210 are in an unplugged state. In short, in the present embodiment, the display module 200 in the display control system 10 is electrically connected to the display control card 100 via a board-to-board connection manner, and is fixed to the frame 300 via the structural member 250.

It should be noted that, in other embodiments of the present invention, the structural member 250 may also be disposed on the frame 300, and a metal portion is disposed on the display module 200 at a position corresponding to the magnet, so that the structural member 250 can attach, mount and fix the display module 200 on the frame 300 by magnetic force.

In addition, in other embodiments of the present invention, the display module 200 and the frame 300 can be fixed by a screw connection. The frame 300 is provided with screw holes, the display module 200 is provided with through holes, and the display module 200 is fixed to the frame 300 by using threaded connectors such as screws, bolts and the like through the through holes and the screw holes, so that the display module 200 and the frame 300 are fixed. It should be noted that the mounting and fixing between the frame 300 and the display module 200 is not limited to the magnetic attraction method using the structural member 250, or the connection method using the screw connector such as the screw/bolt and the screw hole, and may be realized by snap-fitting other suitable structural members.

In summary, in the embodiment of the invention, the frame 300 and the display module 200 are fixedly installed through the structural member 250, and the display module 200 and the display control card 100 form an electrical connection through the connectors 130 and 210 which are directly inserted, so that the installation, fixation and electrical connection are separately designed, and the convenience of the disassembly, assembly and connection of the display module 200 is improved; in addition, the serial display driving data between the display control card 100 and the display module 200 is transmitted in a serial differential signal mode, which can reduce the number of transmission signal lines and improve the stability and anti-interference of signals.

Second embodiment

Referring to fig. 1, 2 and 4b, fig. 4b is a schematic view showing a connection relationship between the pair of connectors in the control system shown in fig. 1 and another structure. The display control system 10 of the present embodiment includes: a display control card 100, a display module 200 and a frame 300.

Specifically, display control card 100 is fixed to frame 300. Display control card 100 includes, for example, programmable device 110 and connector 130. The programmable device 110 is implemented, for example, by an internal algorithm logic, and is configured to perform image processing on input image data to obtain multiple sets of display data and locally generate a display control signal, perform compression coding on the multiple sets of display data and the display control signal to obtain serial display driving data, and output the serial display driving data through the connector 130.

The input image data may be image data received by the programmable device 110 and transmitted by a display controller (e.g., a transmission card) via an upper computer. The image processing is, for example, processing of performing gamma conversion, gradation extraction, and even correction such as luminance or luminance-chrominance correction on image data. Here, the gradation extraction is, for example, an operation such as Bit separation, that is, the gradation extraction is typically a manner in which gradation data after correction processing is subjected to a separation operation per Bit to convert the gradation data into a manner of giving different implementation weights in accordance with different bits. The display control signal includes, for example, a line scan signal, a clock signal, a latch signal, and an enable control signal (embodiments of the present invention are not limited thereto, and other display control signals, such as a line blank signal, may be generated as needed). The plurality of sets of display data may include, for example, a plurality of sets of RGB data (for example, 32 sets of RGB data, 16 sets of RGB data, or 8 sets of RGB data), or other display data, and are set according to the display requirements of the display module 200, for example, RGBY data and RGBW data.

The connector 130 includes, for example, a serial differential signal transmission pin and a power signal transmission pin; the serial differential signal transmission pin is used for transmitting serial display driving data, and the power signal transmission pin is used for transmitting a power signal. Specifically, as shown in fig. 4b, the connector 130 is, for example, a pogo pin connector, which includes a connecting seat 131, a plurality of springs 132 and a plurality of ejector pins 133, wherein the connecting seat 131 is provided with a plurality of through holes 134. The plurality of springs 132 are respectively disposed in the plurality of through holes 134, each of the thimble 133 has a first end 1331 and an opposite second end 1332, the first end 1331 contacts a corresponding one of the plurality of springs 132, and the second end 1332 extends out of the corresponding one of the plurality of through holes 134. A part of the plurality of pins 133 serves as a serial differential signal transmission pin, and a part thereof serves as a power signal transmission pin.

In addition, as shown in fig. 3, there may be a plurality of connectors 130 disposed on the display control card 100, and the display modules 200 are plugged into some or all of the connectors 130 in a one-to-one correspondence. For example, the number of the connectors 130 may be 8, and the number of the display modules 200 may be any natural number greater than or equal to 1 and less than or equal to 8. When the number of the display modules 200 is n and n is less than 8, the n display modules 200 are respectively in one-to-one corresponding insertion connection with the n connectors 130, that is, part of the display modules are in one-to-one corresponding insertion connection; when the number of the display modules 200 is 8, the 8 display modules 200 are respectively plugged with the 8 connectors 130 one by one, that is, all the display modules are plugged one by one. Here, the programmable device 110 is implemented, for example, by an internal arithmetic logic, for performing image processing on input image data to obtain a plurality of sets of display data and locally generate a display control signal, and performing compression coding processing on the plurality of sets of display data and the display control signal to obtain a plurality of paths of serial display driving data, and outputting the plurality of paths of serial display driving data through the plurality of connectors 130, respectively. It should be noted here that, based on the difference in the number of pairs of serial differential signal transmission pins in the connector 130, the connector 130 may output only one path of serial display driving data, or may output two or more paths of serial display driving data.

As shown in fig. 1 and 2, the display module 200 includes, for example, a connector 210, a signal processor 220, a display driving circuit 230, a pixel unit 240, a structural member 250, and a circuit board. The connector 210, the signal processor 220, the display driving circuit 230, the pixel unit 240, and the structural member 250 are disposed on a circuit board.

The connector 210 connects the signal processor 220 and the display driving circuit 230. The connector 210 is directly plugged with the connector 130 on the display control card 100 to electrically connect the display module 200 with the display control card 100 so as to obtain the serial display driving data and the power signal from the display control card 100; in short, the display control card 100 and the display module 200 are connected in a board-to-board manner. The structure of the connector 210 matches the structure of the connector 130, which also includes a serial differential signal transmission pin and a power signal transmission pin for receiving serial display driving data and a power signal, respectively. The connector 210 connects the signal processor 220 to transmit the serial display driving data to the signal processor 220 and supply power to the signal processor 220; the connector 210 is connected to the display driving circuit 230 to supply power to the display driving circuit 230, that is, to supply a power signal. The connector 210 and the connector 130 are arranged in pairs and can be directly plugged; specifically, as shown in fig. 4b, the connector 210 includes a connecting seat 211 and a plurality of pins 212 located in the connecting seat 211. The second end 1332 of the connector 130 extends through a corresponding one of the plurality of through holes 134 to contact a corresponding one of the plurality of pins 212 of the connector 210 to form an electrical connection.

The signal processor 220 is connected between the connector 210 and the display driving circuit 230, and is configured to perform deserialization on the received serial display driving data to obtain multiple sets of parallel display data and display control signals, and transmit the display data and display control signals to the display driving circuit 230. The signal processor 220 includes, for example, a DS92LV2422 deserializer chip, but the embodiment of the invention is not limited thereto.

The display drive circuit 230 includes, for example, a row decoder circuit and a column driver circuit, and even a row discharge circuit. Wherein, the row decoding circuit comprises row decoders such as 3-8 decoders and a row selection switch array; the column driving circuit includes, for example, a plurality of constant current source driving chips like MBI5025 series chips and the like; the row discharge circuit is used to discharge the parasitic capacitance on the row lines. The display driving circuit 230 drives and controls the plurality of pixel units 240 according to the parallel sets of display data and display control signals.

The pixel units 240 are connected to the display driving circuit 230, and the number of the pixel units is usually plural. Each pixel cell 240 includes at least one light emitting element. Specifically, each pixel unit 240 may include, for example, a combination of light emitting elements of any one or more colors of a red light emitting element, a green light emitting element, and a blue light emitting element, and of course, the colors of the respective light emitting elements are not limited to the three primary colors of RGB, but may be four primary colors such as RGBY, or other multiple colors. More specifically, the pixel units 240 are arranged in rows and columns, for example, and are connected to the row decoding circuit via row lines and the column driving circuit via column lines, and the row discharging circuit is connected to the row lines, for example, to discharge parasitic capacitances on the row lines.

The structural member 250 is disposed on the circuit board of the display module 200. The display module 200 is fixed to a target object such as a frame 300 by a structural member 250. The structure 250 is provided with, for example, a groove-shaped seat, inside which a PUSH-pull mechanism is provided, and the frame 300 is correspondingly provided with a raised structure, typically a sheet-like or plate-like raised structure, which is matched with the groove-shaped seat, and the thickness of the sheet-like or plate-like raised structure can be set according to the required mechanical strength. The protruding structure is inserted into the groove-shaped seat by pressing the display module 200, the groove-shaped seat is clamped by the PUSH-PUSH mechanism to fix the display module 200 on the frame 300, and then the display module 200 is pressed to release the protruding structure from the groove-shaped seat to detach the display module 200 from the frame 300. Typically, the number of the groove-shaped seats is four, and the groove-shaped seats are distributed at four corners of the display module 200; of course, the present invention is not limited thereto, and the number of the groove-shaped seats can be flexibly set according to actual needs, as long as the purpose of mechanically fixing the display module 200 on the frame 300 can be achieved.

The frame 300 is used for supporting and fixing the display control card 100 and the display module 200. The material of the frame 300 is, for example, steel, plastic, or other material. When the structural member 250 fixes the display module 200 on the frame 300, the connector 130 and the connector 210 are in a plugging state; when the display module 200 is detached from the frame 300, the connector 130 and the connector 210 are in an unplugged state. In short, in the present embodiment, the display module 200 in the display control system 10 is electrically connected to the display control card 100 via a board-to-board connection manner, and is fixed to the frame 300 via the structural member 250.

It should be noted that, in other embodiments of the present invention, the groove-shaped seat (with the PUSH-PUSH mechanism) may also be disposed on the frame 300 for installing and fixing the display module 200, and accordingly, the display module 200 is provided with a protruding structure, typically a sheet-shaped or plate-shaped protruding structure, which is matched with the groove-shaped seat, and the thickness of the sheet-shaped or plate-shaped protruding structure may be set according to the required mechanical strength.

In summary, in the embodiment of the present invention, the structural member 250 is disposed on the display module to enable the display module 200 to be mounted and fixed on the frame 300 by the fastening of the PUSH-PUSH mechanism, and the connectors 130 and 210 directly inserted and connected are disposed on the display module 200 and the display control card 100 to form an electrical connection, so that the mounting, fixing, connecting and electrical connection are separated, thereby improving the convenience of the display module in dismounting and connecting wire maintenance; in addition, the serial display driving data between the display control card 100 and the display module 200 is transmitted in a serial differential signal mode, which can reduce the number of transmission signal lines and improve the stability and anti-interference of signals.

Third embodiment

Referring to fig. 5, a third embodiment of the present invention provides a display control system 10 including: a display control card 100, a plurality of display modules 200 (four display modules 200 are taken as an example in the embodiment, but the invention is not limited thereto), and a frame 300. The frame 300 is disposed between the display control card 100 and the display modules 200 for mechanically fixing the display control card 100 and each display module 200.

The frame 300 includes a front surface a and a rear surface B opposite to the front surface a. The display control card 100 is fixed to the back side B of the frame 300 by a connection means such as a screw connection. The display modules 200 are fixed to the front surface a of the frame 300 through the structural members 250, and the connectors 210 of the display modules 200 are directly plugged with the connectors 130 of the display control card 100 to form electrical connections. Of course, in other embodiments of the present invention, the display control card 100 and the display module 200 can be disposed on the front side a of the frame 300 at the same time, and the display control card 100 is disposed between the display module 200 and the frame 300.

The structural member 250 may be a connector such as a screw or a bolt, and each display module 200 may be fixed to the front surface a of the frame 300 by screwing.

It is worth mentioning that the structural member 250, such as a magnet, is disposed at the side of the display module 200, and a protrusion is disposed on the side (the surface between the front surface a and the back surface B) of the frame 300, and a metal portion is disposed on the protrusion, so that the display module 200 is fixed from the side of the frame 300 by a magnetic force.

In addition, in other embodiments of the present invention, the display module 200 may be fixed from the side of the frame 300 by providing screw holes on the side of the display module 200, providing a protrusion on the side of the frame 300, providing a through hole on the protrusion, and using screw connectors such as screws and bolts to fix the display module 200 from the side of the frame 300 through the through hole and the screw holes.

In addition, the technical solution of the present invention is not limited to the serial differential signal transmission mode adopted in the foregoing embodiments of the present invention, and may also be replaced by a serial transmission mode adopting a single-ended signal, and the function of high-speed serial data transmission may also be realized.

Fourth embodiment

As shown in fig. 6, a display control card 60 according to a fourth embodiment of the present invention includes: programmable device 61, signal converter 63, and board-to-board connector 65. The programmable device 61 is configured to perform image processing on input image data to obtain a plurality of groups of display data, generate a display control signal and a control clock, and output the plurality of groups of display data, the display control signal, and the control clock in the form of parallel signals. The signal converter 63 is connected to the programmable device 61 and is connected to the board-to-board connectors 65 in a one-to-one correspondence manner, and the signal converter 613 is controlled by the control clock to perform compression coding on the sets of display data and the display control signal to obtain a path of serial display driving data, and transmit the path of serial display driving data to the board-to-board connectors 65 connected to the signal converter 63 for output, for example, output in a serial differential signal form. The signal converter 63 includes, for example, a serializer chip having a parallel-to-serial conversion function, such as a DS92LV2421 chip. In addition, it should be noted that the number of the signal converters 63 may be plural, and correspondingly, the board-to-board connectors 65 connected to the signal converters in a one-to-one correspondence may also be provided in plural; each of the signal converters 63 serializes a part of the sets of display data and display control signals supplied from the programmable device 61. Taking the programmable device 61 to output 32 sets of display data as an example, if the display data processing capability of the signal converter 63 is 4 sets, the display control card 60 may be configured with eight signal converters 63 and corresponding eight board-to-board connectors 65; if the display data processing capability of the signal converters 63 is 8 sets, the display control card 60 may be provided with four signal converters 63 and corresponding four board-to-board connectors 65, and so on. As for the board-to-board connector 65, it may employ the aforementioned connector 130 in fig. 4a or the connector 130 in fig. 4 b.

The present embodiment implements parallel-to-serial conversion of multiple sets of display data and display control signals by a dedicated signal converter 63, which can simplify the software programming design of the programmable device 61.

Fifth embodiment

As shown in fig. 7, a fifth embodiment of the present invention provides a display control card 70, including: a scanning card 71 and an adapter card 73. The scan card 71 includes, for example, a programmable device 711, and the adapter card 73 includes, for example, a board-to-board connector 731, a signal converter 733, and a connector 735.

Specifically, the scan card 71 is fixed to the adapter card 73 by a connecting member 735, for example, so that the programmable device 711 is connected to the adapter card 73 by the connecting member 735, and the signal converter 733 is connected between the board-to-board connector 731 and the connecting member 735.

The programmable device 711 is configured to perform image processing on input image data to obtain a plurality of sets of display data, such as 4 sets or 6 sets of RGB display data, generate a display control signal and a control clock, and output the plurality of sets of display data, the display control signal, and the control clock in the form of parallel signals. The signal converter 733 receives the control of the control clock to perform compression coding on the plurality of sets of display data and the display control signal to obtain a channel of serial display driving data, and the channel of serial display driving data is transmitted to the board-to-board connector 731 connected to the signal converter 733 for output, for example, in the form of serial differential signals.

Specifically, the input image data may be image data received by the programmable device 711 and transmitted by a front-end controller such as a transmission card via an upper computer. The image processing is, for example, gamma conversion, gray extraction or even correction such as luminance or luminance correction, etc., performed on the image data, and here, the gray extraction is, for example, an operation such as Bit separation, that is, the gray extraction is typically a manner in which the gray data after the correction processing is subjected to a separation operation per Bit to convert the gray data into a manner in which different implementation weights are given according to different bits. The display control signals are locally generated, for example, and include a line scan signal, a clock signal, a latch signal, an enable control signal, and a line blank signal, for example. The plurality of sets of display data may also be other display data, such as RGBY data, RGBW data, and the like.

The board-to-board connector 731 may be, for example, the connector 130 of fig. 4a or the connector 130 of fig. 4b described above.

The signal converter 733 outputs, for example, a pair of first ground signals to the board-to-board connector 731 connected to the signal converter 733; the board-to-board connector 731 also receives an input pair of power signals and a pair of second ground signals for output, for example, and the board-to-board connector 731 is an 8-pin connector, for example.

In the present embodiment, the serial display driving data, the power signal and the ground signal are introduced into the same board-to-board connector, which simplifies the connection between the display control card 70 and the display module.

Sixth embodiment

As shown in fig. 8, a display control card 80 according to a sixth embodiment of the present invention includes: a scan card 81 and an adapter card 83. Scan card 81 includes, for example, programmable device 811, and adapter card 83 includes, for example, a plurality of board-to-board connectors 831, a plurality of signal converters 833, and connectors 835.

Specifically, the scan card 81 is fixed on the adapter card 83 by a connector 835, for example, so that the programmable device 811 is connected to the adapter card 83 by the connector 835, and the plurality of signal converters 833 are respectively connected between the plurality of board-to-board connectors 831 and the connector 835. The signal converters 833 are connected to the board-to-board connectors 831 in a one-to-one correspondence.

The programmable device 811 is used, for example, for performing image processing on input image data to obtain a plurality of sets of display data, generating a display control signal and a control clock, and outputting the plurality of sets of display data, the display control signal, and the control clock in the form of parallel signals. Each of the signal converters 833, under the control of the control clock, performs compression coding on a part of the sets of display data, for example, 4 sets or 6 sets of display data, and the display control signal to obtain a channel of serial display driving data, and transmits the channel of serial display driving data to the board-to-board connector 831 connected to the signal converter 833 for output, for example, in the form of serial differential signals.

For example, taking the programmable device 811 as an example to perform image processing on input image data to obtain 24 sets of RGB display data, the number of the signal converters 833 may be six, each signal converter 833 is responsible for compression coding, such as serialization, of 4 sets of RGB display data and the display control signal to obtain one path of serial display driving data, and the number of the corresponding floor-to-board connectors 831 may also be set to six; alternatively, the number of the signal converters 833 may be four, each signal converter 833 is responsible for performing compression coding, for example, serialization, on the 6 sets of RGB display data and the display control signal to obtain one channel of serial display driving data, and the number of the corresponding floor-to-board connectors 831 may also be four.

As described above, the input image data may be image data received by the programmable device 711 and transmitted from a front-end controller such as a transmission card via an upper computer. The image processing is, for example, gamma conversion, gray extraction or even correction such as luminance or luminance correction, etc., performed on the image data, and here, the gray extraction is, for example, an operation such as Bit separation, that is, the gray extraction is typically a manner in which the gray data after the correction processing is subjected to a separation operation per Bit to convert the gray data into a manner in which different implementation weights are given according to different bits. The display control signals are locally generated, for example, and include a line scan signal, a clock signal, a latch signal, an enable control signal, and a line blank signal, for example. The plurality of sets of display data may also be other display data, such as RGBY data, RGBW data, and the like.

The plurality of board-to-board connectors 831 employ, for example, the aforementioned connector 130 of fig. 4a and/or the connector 130 of fig. 4 b.

Each of the plurality of signal converters 833 further outputs, for example, a pair of first ground signals to the board-to-board connector 831 connected thereto. The riser card 83 is further provided with, for example, a plurality of power signal lines and a plurality of ground signal lines for supplying power signals and ground signals, respectively, to the respective board-to-board connectors 831 for output. Each of the plurality of board-to-board connectors 831 is, for example, an 8-pin connector, and also receives for output a pair of power signals and a pair of second ground signals that are input (e.g., provided by the riser card 83 via the plurality of power signal lines and the plurality of ground signal lines).

In this embodiment, the multiple sets of display data and display control signals output by the programmable device 811 are transmitted to the multiple signal converters 833 for compression and encoding to obtain the multiple paths of serial display driving data, which can improve the loading capability of the display control card 80. Furthermore, by introducing the serial display driving data and the power signal and the ground signal into the same board-to-board connector, the connection between the display control card 80 and the display module can be simplified.

Seventh embodiment

As shown in fig. 9, a display control system 90 according to a seventh embodiment of the present invention includes: a front-end controller 91, a display module 93 (only one display module 93 is shown in fig. 9 as an example, which may also be a plurality of display modules 93), and a display control card 95. For a detailed structural and functional description of the display control card 45, reference may be made to the related descriptions of the display control card 60, 70, or 80 of the fourth, fifth, or sixth embodiment, which are not repeated herein.

The front-end controller 91 is, for example, configured to receive a video signal, perform video processing on the video signal, and output image data to the display control card 95, and has, for example, a function of sending a card. Each display module 93 includes, for example, a board-to-board connector 931 and is connected to a board-to-board connector 951 of the display control card 95 through the board-to-board connector 931 (only one board-to-board connector is shown in fig. 9 as an example, which may also be a plurality of board-to-board connectors as shown in fig. 8) to receive a channel of serial display driving data obtained by a signal converter connected to the board-to-board connector 951. Each display module 93 also receives, for example, a pair of power signals for dot screen, which are supplied from the display control card 95 through the board-to-board connector 931 and output through the board-to-board connector 951 provided thereon. After receiving one path of serial display driving data, the display module 93 may decode and recover original sets of display data and display control signals, and then, for example, perform level conversion to convert the display data and the display control signals into TTL levels for dot screen display.

Specifically, if the display control card 95 includes a plurality of, for example, N board-to-board connectors 951, it may be connected to no more than N display modules 93, and each board-to-board connector 951 is connected to, for example, one display module 93. The board-to-board connector 951 and the board-to-board connector 931 employ, for example, the connectors 130 and 210 of fig. 4a, respectively, or the connectors 130 and 210 of fig. 4b, respectively.

The display module 93 includes, for example, a display driving circuit including, for example, a row decoder circuit and a column driving circuit, and even a row discharge circuit. Wherein, the row decoding circuit comprises row decoders such as 3-8 decoders and a row selection switch array; the column driving circuit includes, for example, a plurality of constant current source driving chips like MBI5025 series chips and the like; the row discharge circuit is used for discharging the parasitic capacitance on the row line.

In this embodiment, parallel groups of display data and display control signals output by the programmable device are compressed and encoded into one or more paths of serial display driving data and output in a serial differential signal form under the control of the control clock by the signal converter on the display control card 95, each path of serial display driving data and a power signal for pointing the screen are sent to the corresponding display module 93 through the same board-to-board connector 951 such as an 8-pin connector, and the display module 93 receives one path of serial display driving data and a power signal for pointing the screen through the board-to-board connector 931 arranged on the display module 93 and displays the screen on the point screen. The embodiment can reduce the number of transmission signal lines, reduce the design size of the connector, facilitate maintenance and disassembly, improve the stability and anti-interference performance of signals, and improve the EMC performance and the bandwidth utilization rate.

Finally, it is worth mentioning that the programmable devices 61, 711 and 811 in the fourth to sixth embodiments may be in the form of a single programmable device such as an FPGA, or may be in the form of a programmable device group formed by two or more programmable devices such as FPGAs. Further, the display control cards 70 and 80 in the fifth and sixth embodiments are not limited to a multi-circuit board structure formed by separate parts such as a scan card and an adapter card, and may be a single-circuit board structure in which all components on the scan card and all components on the adapter card are integrated on the same circuit board. In addition, the scanning card can be connected with a connecting piece on the adapter card through a golden finger structure.

In addition, it should be understood that the foregoing embodiments are merely exemplary illustrations of the present application, and technical solutions of the embodiments can be arbitrarily combined and used in combination without conflict, contradiction, or conflict with the purpose of the present application.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and/or method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units/modules is only one logical division, and there may be other divisions in actual implementation, for example, multiple units or modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units/modules described as separate parts may or may not be physically separate, and parts displayed as units/modules may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units/modules may be selected according to actual needs to achieve the purpose of the technical solution of the present invention.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will 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; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (15)

1. A display control system, comprising:

a frame;

the display control card is fixed on the frame and is provided with a first board-to-board connector;

the display module is provided with a second plate-to-plate connector and a structural member arranged at an interval with the second plate-to-plate connector; the display module is directly plugged with the display control card through the second board-to-board connector and the first board-to-board connector to form board-to-board electrical connection with the display control card, and is fixedly installed on the frame through the structural part so that the display module and the display control card form mechanical connection;

each of the first board-to-board connector and the second board-to-board connector comprises a serial differential signal transmission pin and a power signal transmission pin, so that the serial differential signal transmission pin and the power signal transmission pin are located in the same connector, the serial differential signal transmission pin is used for transmitting serial display driving data containing multiple groups of display data and display control signals, and the power signal transmission pin is used for transmitting power signals.

2. The display control system of claim 1, wherein the structural member comprises a magnet, and the display module is fixed to the frame by magnetic attraction of the structural member.

3. The display control system according to claim 2, wherein the magnet is disposed on a side surface of the display module, a side surface of the frame is provided with a protrusion, the protrusion has a metal portion, and the display module and the frame are fixed by magnetic attraction between the magnet and the metal portion.

4. The display control system according to claim 1, wherein the structural member comprises a groove-shaped seat and a pushing and withdrawing mechanism located in the groove-shaped seat, the frame is provided with a protruding structure, and the display module and the frame are fixedly mounted by the clamping of the pushing and withdrawing mechanism located in the groove-shaped seat and the protruding structure; or

The structural part comprises a protruding structure, the frame is provided with a groove-shaped seat and a pushing and withdrawing mechanism located in the groove-shaped seat, and the display module and the frame are fixedly installed through the protruding structure and the pushing and withdrawing mechanism located in the groove-shaped seat in a clamping mode.

5. The display control system of claim 1, wherein the structural member comprises a threaded connector, the display module has a through hole, the frame has a screw hole, and the threaded connector passes through the through hole and is threadedly coupled with the screw hole to fixedly mount the display module to the frame.

6. The display control system of claim 1, wherein the first board-to-board connector includes a first connector receptacle and a plurality of pins in the first connector receptacle, the second board-to-board connector includes a second connector receptacle having a plurality of through holes disposed therein, a plurality of springs respectively disposed in the plurality of through holes, each of the pins having a first end in contact with a corresponding one of the plurality of springs and an opposite second end extending out of a corresponding one of the plurality of through holes for contact with a corresponding one of the plurality of pins of the first board-to-board connector; or

The first board is to board connector includes first connecting seat, a plurality of spring and a plurality of thimble, be provided with a plurality of through-holes on the first connecting seat, a plurality of springs are located respectively in a plurality of through-holes, each the thimble has first end and relative second end, first end with a corresponding spring contact in a plurality of springs, the second board is to the board connector includes the second connecting seat and is located a plurality of stitches in the second connecting seat, the second end stretch out a corresponding through-hole in a plurality of through-holes with the second board is to the board connector a corresponding stitch contact in a plurality of stitches.

7. The display control system of claim 1, wherein the display control card comprises a programmable device configured to perform image processing and compression coding on input image data to obtain serial display driving data, and output the serial display driving data to the second board-to-board connector through the first board-to-board connector.

8. The display control system according to claim 1, wherein the display control card includes a programmable device and a signal converter connected to the programmable device and the first board-to-board connector, the programmable device is configured to perform image processing on input image data to obtain a plurality of sets of display data and generate a display control signal, the signal converter is configured to perform compression coding on some or all sets of display data in the plurality of sets of display data and the display control signal to obtain serial display driving data, and output the serial display driving data to the second board-to-board connector through the first board-to-board connector; the signal converter is also used for outputting a pair of first ground signals to the first board-to-board connector; the first board-to-board connector also receives an input pair of second ground signals for output and a pair of power signals through the power signal transmission pins for output.

9. A display module is suitable for forming electrical connection with a display control card and comprises:

the display driving circuit is connected between the signal processor and the pixel unit;

the board-to-board connector is used for being directly plugged with the display control card to form the electrical connection, is arranged on the circuit board and is connected with the signal processor and the display driving circuit, and comprises serial differential signal transmission pins and power signal transmission pins, so that the serial differential signal transmission pins and the power signal transmission pins are positioned in the same connector, the serial differential signal transmission pins are used for receiving serial display driving data containing multiple groups of display data and display control signals, and the power signal transmission pins are used for receiving power signals so as to provide the serial display driving data and the power signals for the signal processor and the power signals for the display driving circuit; and

the structural part is arranged on the circuit board so as to be arranged on the same circuit board at intervals with the board-to-board connector, and the structural part is used for installing and fixing the display module on a target object so as to form mechanical connection with the display control card fixed on the target object.

10. The display module of claim 9, wherein the board-to-board connector comprises a connection socket and a plurality of pins in the connection socket, a portion of the pins being the serial differential signal transmission pins for transmitting the serial display driving data, and another portion of the pins being the power signal transmission pins for transmitting the power signal; or

The board-to-board connector comprises a connecting seat, a plurality of springs and a plurality of ejector pins, wherein the connecting seat is provided with a plurality of through holes, the springs are respectively located in the through holes, each ejector pin is provided with a first end and a second end opposite to the first end, the first end is in contact with one corresponding spring in the springs, the second end extends out of one corresponding through hole in the through holes, one part of the ejector pins in the ejector pins serve as serial differential signal transmission pins to be used for transmitting serial display driving data, and the other part of the ejector pins serve as power signal transmission pins to be used for transmitting power signals.

11. The display module according to claim 9, wherein the structural member comprises a magnet, or a groove-shaped seat and a pushing and withdrawing mechanism located in the groove-shaped seat, or a protruding structure capable of being engaged with the pushing and withdrawing mechanism, or a threaded connector.

12. A display control card adapted to be electrically connected to a display module and mechanically connected to a target object by being mechanically fixed to the target object, the display control card comprising:

a programmable device;

the board-to-board connector is used for being directly plugged with the display module to form electrical connection and being connected with the programmable device and comprises a serial differential signal transmission pin and a power signal transmission pin, so that the serial differential signal transmission pin and the power signal transmission pin are positioned in the same connector;

the serial differential signal transmission pin is used for transmitting serial display driving data containing multiple groups of display data and display control signals, and the power signal transmission pin is used for transmitting power signals.

13. The display controller card of claim 12, wherein the programmable device is configured to perform image processing on input image data to obtain multiple sets of display data and locally generate the display control signal, and perform compression coding on the multiple sets of display data and the display control signal to obtain serial display driving data, and transmit the serial display driving data to the serial differential signal transmission pins of the board-to-board connector.

14. The display controller card of claim 12, wherein said display controller card further comprises a signal converter connected between said programmable device and said board-to-board connector; the programmable device is used for carrying out image processing on input image data to obtain a plurality of groups of display data, generating the display control signals and the control clock, and outputting the plurality of groups of display data, the display control signals and the control clock in a parallel signal form; the signal converter receives the control of the control clock, and performs compression coding processing on part or all of the groups of display data and the display control signals to obtain the serial display driving data, and the serial display driving data is transmitted to the serial differential signal transmission pins of the board-to-board connector.

15. The display control card of claim 12, wherein the board-to-board connector comprises a connection socket and a plurality of pins in the connection socket, a portion of the plurality of pins being the serial differential signal transmission pins and another portion of the plurality of pins being the power signal transmission pins; or

The board-to-board connector comprises a connecting seat, a plurality of springs and a plurality of ejector pins, wherein the connecting seat is provided with a plurality of through holes, the springs are respectively located in the through holes, each ejector pin is provided with a first end and a second end opposite to the first end, the first end is in contact with one corresponding spring in the springs, the second end extends out of one corresponding through hole in the through holes, one part of the ejector pins in the ejector pins serve as the serial differential signal transmission pins, and the other part of the ejector pins serve as the power signal transmission pins.

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