Tiled display apparatus, tiled display control method, and non-transitory computer-readable storage medium

A tiled display apparatus includes a main display driving board and display modules. Each display module includes a system board. The main display driving board is coupled to a first stage system board. The main display driving board is configured to receive a display signal, acquire a main screen region display signal, and transmit the main screen region display signal to the first stage system board. The system board is configured to receive the main screen region display signal, and extract a group of main screen region display data corresponding thereto from the main screen region display signal to control a display module to which the system board belongs to display an image according to the main screen region display data. Except for a last stage system board, remaining system boards are each further configured to transmit the received main screen region display signal to a next stage system board.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present disclosure is a national phase entry under 35 USC 371 of International Patent Application No. PCT/CN2021/086022 filed on Apr. 8, 2021, which claims priority to Chinese Patent Application No. 202010415373.0, filed on May 15, 2020, which are incorporated herein by reference in their entirety.

TECHNICAL FIELD

The present disclosure relates to the field of display technologies, and in particular, to a tiled display apparatus, a tiled display control method and a non-transitory computer-readable storage medium.

BACKGROUND

At present, tiled display apparatus are widely used in various industries. The existing tiled display apparatus includes a plurality of display modules that are tiled together, and each display module needs to be separately provided with a display driving board. When the tiled display apparatus works, a signal source sends a display signal to the display driving board corresponding to each display module at the same time, and each display driving board controls the display module corresponding thereto to display an image according to the received display signal, so that the entire tiled display apparatus displays a complete image.

The tiled display apparatus described above requires a large number of display driving boards, resulting in high costs. In addition, a plurality of display driving boards need to be provided with respective data lines to connect the signal source thereto, which causes the wiring to be messy and difficult to install.

SUMMARY

In one aspect, a tiled display apparatus is provided. The tiled display apparatus includes a main display driving board, and a plurality of display modules that are tiled together. Each display module includes a system board, and system boards of all display modules are cascaded in sequence. The main display driving board is coupled to a first stage system board among the system boards cascaded in sequence.

The main display driving board is configured to receive a display signal, acquire a main screen region display signal according to the display signal, and transmit the main screen region display signal to the first stage system board. The main screen region display signal includes a plurality of groups of main screen region display data, and a group of main screen region display data is display data required for a display module to display an image. The system board is configured to receive the main screen region display signal, extract a group of main screen region display data corresponding to the system board from the main screen region display signal to control a display module to which the system board belongs to display an image according to the extracted main screen region display data. Except for a last stage system board, remaining system boards are each further configured to transmit the received main screen region display signal to a next stage system board.

In some embodiments, the main display driving board is further configured to divide the display signal according to a number of the plurality of system boards, so as to obtain the main screen region display signal including the plurality of groups of main screen region display data.

In some embodiments, the tiled display apparatus further includes a plurality of seam display units. Each seam display unit is disposed between two adjacent display modules. The plurality of seam display units include at least one first seam display unit. The main display driving board is coupled to the at least one first seam display unit. The main display driving board is further configured to acquire at least one first seam region display signal according to the display signal, and transmit the at least one first seam region display signal to the at least one first seam display unit, respectively. Each first seam region display signal includes a group of first seam region display data, and a group of first seam region display data is display data required for a first seam display unit to display an image. Each first seam display unit is configured to receive a first seam region display signal to display an image according to a group of first seam region display data included in the first seam region display signal.

In some embodiments, the plurality of seam display units further include at least one second seam display unit. The tiled display apparatus further includes at least one secondary display driving board. The at least one secondary display driving board is coupled to the main display driving board, and each secondary display driving board is coupled to one or more second seam display units.

The main display driving board is further configured to acquire at least one second seam region display signal according to the display signal, and transmit the at least one second seam region display signal to the at least one secondary display driving board, respectively. Each second seam region display signal includes at least one group of second seam region display data, and a group of second seam region display data is display data required for a second seam display unit to display an image. Each secondary display driving board is configured to receive a second seam region display signal and transmit at least one group of second seam region display data included in the second seam region display signal to one or more second seam display units coupled thereto, respectively. Each second seam display unit is configured to receive a group of second seam region display signal to display an image according to the group of second seam region display data.

In some embodiments, the first seam display unit is closer to the main display driving board than the second seam display unit.

In some embodiments, a number of first seam display units is less than or equal to seven. A number of second seam display units coupled to the secondary display driving board is less than or equal to seven.

In some embodiments, the seam display units are mini light-emitting diode (LED) display units.

In some embodiments, the main display driving board is disposed on a display module to which the first stage system board belongs.

In some embodiments, the tiled display apparatus further includes at least one secondary display driving board, and each secondary display driving board is disposed on any one of display modules adjacent to at least one second seam display unit, which is coupled to the secondary display driving board.

In some embodiments, the main display driving board includes a display signal input interface, and a first output interface that is coupled to the first stage system board. The display signal input interface is configured to receive the display signal. The first output interface is configured to transmit the main screen region display signal acquired according to the display signal to the first stage system board.

In some embodiments, the tiled display apparatus further includes at least one first seam display unit, at least one second seam display unit and at least one secondary display driving board, and the main display driving board further includes at least one second output interface and at least one third output interface. The at least one second output interface is respectively coupled to the at least one first seam display unit. A second output interface is configured to transmit a first seam region display signal acquired according to the display signal to a first seam display unit coupled thereto. The at least one third output interface is respectively coupled to the at least one secondary display driving board. A third output interface is configured to transmit a second seam region display signal acquired according to the display signal to a secondary display driving board coupled thereto.

In some embodiments, each display module further includes a timing controller. The timing controller is coupled to the system board. The system board is configured to output a timing control signal and a red-green-blue (RGB) data signal according to the extracted main screen region display data. The timing controller is configured to receive the timing control signal and the RGB data signal, and control the display module to display an image according to the timing control signal and the RGB data signal.

In some embodiments, the tiled display apparatus further includes a first power circuit. The first power circuit is coupled to the main display driving board, and the first power circuit is configured to provide power to the main display driving board.

In some embodiments, each display module further includes a second power circuit. The second power circuit is coupled to the system board, and the second power circuit is configured to provide power to the system board coupled thereto.

In some embodiments, the tiled display apparatus further includes at least one secondary display driving board, and the tiled display apparatus further includes at least one third power circuit. The at least one third power circuit is respectively coupled to the at least one secondary display driving board, and a third power circuit is configured to provide power to a secondary display driving board coupled thereto.

In another aspect, a tiled display control method applied to the tiled display apparatus as described above is provided. The tiled display control method includes: receiving, by the main display driving board of the tiled display apparatus, the display signal; acquiring, by the main display driving board, the main screen region display signal according to the display signal; and transmitting, by the main display driving board, the main screen region display signal to the first stage system board among system boards of display modules of the tiled display apparatus, the main screen region display signal including the plurality of groups of main screen region display data, and the group of main screen region display data being display data required for the display module to display an image; receiving, by the first stage system board, the main screen region display signal transmitted by the main display driving board; transmitting, by each of remaining system boards except for a last stage system board, the received main screen region display signal to a next stage system board; receiving, by each of remaining system boards except for the first stage system board, the main screen region display signal transmitted by a previous stage system board; and extracting, by each system board, a group of main screen region display data corresponding to the system board from the received main screen region display signal, respectively to control a corresponding display module to display an image according to the extracted group of main screen region display data.

In some embodiments, the tiled display apparatus further includes a plurality of seam display units. The plurality of seam display units include at least one first seam display unit. The tiled display control method further includes: acquiring, by the main display driving board, at least one first seam region display signal according to the display signal; and transmitting, by the main display driving board, the at least one first seam region display signal to the at least one first seam display unit coupled thereto, respectively, each first seam region display signal including a group of first seam region display data, and a group of first seam region display data being display data required for a first seam display unit to display an image; receiving, by each first seam display unit, a first seam region display signal to display an image according to a group of first seam region display data included in the first seam region display signal.

In some embodiments, the plurality of seam display units further include at least one second seam display unit, and the tiled display apparatus further includes at least one secondary display driving board. The tiled display control method further includes: acquiring, by the main display driving board, at least one second seam region display signal according to the display signal; and transmitting, by the main display driving board, the at least one second seam region display signal to the at least one secondary display driving board, respectively, each second seam region display signal including at least one group of second seam region display data, and a group of second seam region display data being display data required for a second seam display unit to display an image; receiving, by each secondary display driving board, a second seam region display signal; and transmitting, by the secondary display driving board, at least one group of second seam region display data included in the second seam region display signal to at least one second seam display unit coupled thereto, respectively; and receiving, by each second seam display unit, a group of second seam region display data to display an image according to the group of second seam region display data.

In some embodiments, acquiring, by the main display driving board, the main screen region display signal according to the display signal, includes: dividing, by the main display driving board, the display signal according to the number of the plurality of system boards, so as to obtain the main screen region display signal including the plurality of groups of main screen region display data.

In yet another aspect, a non-transitory computer-readable storage medium is provided. The computer-readable storage medium has stored thereon computer program instructions that, when executed on a processor, cause the processor to perform one or more steps of the tiled display control method according to any of the above embodiments.

DETAILED DESCRIPTION

The use of “applicable to” or “configured to” herein indicates an open and inclusive expression, which does not exclude devices applicable to or configured to perform additional tasks or steps.

In the related art, a tiled display apparatus includes a plurality of display driving boards and a plurality of display modules. The plurality of display modules are tiled together, and each display module needs to be separately provided with a display driving board. When the tiled display apparatus works, a signal source sends a display signal to the display driving board corresponding to each display module at the same time, and each display driving board extracts corresponding display data according to the received display signal, and controls the display module corresponding thereto to display an image, so that the entire tiled display apparatus displays a complete image.

In the tiled display apparatus described above, each display module corresponds to a single display driving board. In a case where the tiled display apparatus includes a large number of display modules (for example, the plurality of display modules form a 3*3 or 4*4 display module array), the tiled display apparatus requires a large number of display driving boards, resulting in high costs. In addition, the display driving boards need to be coupled to the signal source through respective data lines, which causes the wiring to be messy and difficult to install.

In the plurality of display modules tiled together included in the tiled display apparatus, due to the existence of frames, there will be a seam between two adjacent display modules. As a result, when the tiled display apparatus displays an image, there will be seams on the entire image displayed, causing the image to be discontinuous. For example, the displayed image is shown inFIG.7A, and it may be seen that the black seams are quite obvious on the entire image displayed.

In the related art, light-emitting diode (LED) display units are used to block the seams, and each display driving board drives the LED display unit coupled thereto to display an image at the same time, so as to achieve a purpose of blocking the seams. However, since the pixel spacing of the display module does not match that of the LED display unit (for example, in a case where the display module is a liquid crystal display module, the pixel spacing of the LED display unit is greater than the pixel spacing of the liquid crystal display module), and the visual effects, such as brightness and color, of the images displayed by different types of display units are different, there may be problems such as inaccurate alignment and inconsistent visual effects when the display module and the LED display unit display images. Consequently, there may be significant visual differences in the seams of the entire image displayed, which affects the display effect.

As shown inFIGS.1to3, some embodiments of the present disclosure provide a tiled display apparatus, which includes a main display driving board2and a plurality of display modules1that are tiled together.

Each display module1includes a system board11. System boards11of all display modules1are cascaded in sequence.

As shown inFIG.1, the tiled display apparatus includes four display modules1that are tiled together, which are numbered “A”, “B”, “C” and “D” in sequence. The system boards11of the display modules1are cascaded in sequence in the order from A to D.

The main display driving board2is coupled to a first stage system board11among a plurality of system boards11cascaded in sequence. As shown inFIG.1, the main display driving board2is coupled to the system board11included in the display module1numbered “A”.

The main display driving board2is configured to receive a display signal, acquire a main screen region display signal according to the display signal, and transmit the main screen region display signal to the system board11coupled thereto. The main screen region display signal includes a plurality of groups of main screen region display to data, and a group of main screen region display data is display data required for a display module to display an image.

In the tiled display apparatus, the main display driving board2has functions of signal reception and signal distribution. The main display driving board2receives the display signal from a signal source, acquires the main screen region display signal according to the display signal, and transmits the main screen region display signal to the system board11coupled thereto. In some embodiments, the main display driving board2is configured to divide the display signal according to the number of the plurality of system boards11, so as to obtain the main screen region display signal including the plurality of groups of main screen region display data.

For example, the main display driving board2is a field-programmable gate array (FPGA) driving board. A tiling processing unit is integrated on the FPGA driving board, so that the tiling processing unit may divide a display signal into the main screen region display signal according to the number of the plurality of display modules1. The main screen region display signal includes a plurality of groups of main screen region display data, and a group of display data correspondingly controls a display module1to display an image.

For example, the signal source is a 4K player or a computer, which outputs a corresponding display signal according to a video or image that needs to be displayed. For example, the display signal is a high-definition multimedia interface (HDMI)-4K video signal.

The system board11is configured to receive the main screen region display signal, extract a group of main screen region display data corresponding to the system board11from the main screen region display signal to control the display module1to which the system board11belongs to display an image according to the extracted main screen region display data. Except for a last stage system board11, remaining system boards11are each further configured to transmit the received main screen region display signal to a next stage system board11.

For example, the system board11is a system-on-chip (SOC) development board, and the system board11includes an application-specific integrated circuit (ASIC). With a complete system and all content of embedded software, the ASIC may be able to extract the main screen region display data corresponding to the system board11from the main screen region display signal to control the display module1to which the system board11belongs to display an image according to the extracted main screen region display data.

The system board11has the functions of extracting corresponding main screen region display data and transmitting the main screen region display signal. After receiving the main screen region display signal, each stage system board11controls the display module1to which it belongs to display an image according to the extracted main screen region display data. It will be noted that the rate at which the main screen region display signal is sequentially transmitted through the plurality of stages of system boards11is high enough that signal delay is negligible. That is to say, the plurality of display modules1display images simultaneously.

In the tiled display apparatus provided by some embodiments of the present disclosure, by connecting the system boards11included in all display modules1in cascade, and coupling the main display driving board2to the first stage system board11, it may be possible to realize transmission of the main screen region display signal to the plurality of display modules1in sequence. In addition, the main display driving board2has the function of dividing the display signal, and the system board11has the function of extracting corresponding main screen region display data. As a result, each system board11controls the display module1to which it belongs to display an image according to the extracted main screen region display data, thereby realizing the display of a complete image. Therefore, in the tiled display apparatus of the embodiments of the present disclosure, the plurality of display modules1that are tiled together only need to be equipped with a single main display driving board2. The system boards1transmit the main screen region display signal stage by stage and extract the corresponding main screen region display data under the control of the main display driving board2, and each display module1displays an image under the control of the system board11, thereby realizing image display on an entire tiled screen of the tiled display apparatus. In this way, the number of the main display driving boards2may be reduced, and thus the cost of the tiled display apparatus may be reduced.

In some embodiments, as shown inFIG.4, the main display driving board2includes a display signal input interface21and a first output interface22.

The display signal input interface21is coupled to the signal source and is configured to receive the display signal. For example, the display signal input interface21is a HDMI.

The first output interface22is coupled to the first stage system board11. The first output interface22is configured to transmit the main screen region display signal acquired according to the display signal to the first stage system board11. For example, the first output interface is a HDMI.

In some embodiments, the system board11includes a main screen region display signal input interface. Except for the last stage system board11, remaining system boards11each further includes a main screen region display signal output interface. The main screen region display signal input interface of the first stage system board11is coupled to the first output interface of the main display driving board2, and the main screen region display signal input interface of the remaining system board11are each coupled to the main screen region output interface of a previous stage system board11. The main screen region display signal output interface of the remaining system board11except for the last stage system board11is coupled to the main screen region display signal input interface of a next stage system board11. For example, the main screen region display signal input interface and the main screen region display signal output interface are both HDMIs.

In some embodiments, as shown inFIGS.1to3, the tiled display apparatus further includes a plurality of seam display units3. Each seam display unit3is disposed between two adjacent display modules1.

In order to block the seam between two adjacent display modules1, the seam display unit3is disposed at the position of the seam, so as to achieve the purpose of improving the display effect. For example, in a case where the display module1is the liquid crystal display module, the display module1has a rather narrow frame, and there is a height difference between the frame and the display screen; in this case, the seam display unit is disposed at the position of the frames of two adjacent display modules. In this way, the surface of the display screen of the display module1and a surface of a display screen of the seam display unit are of the same height, so that the visual effect is good.

The plurality of seam display units3include at least one first seam display unit3a. The main display driving board1is coupled to the at least one first seam display unit3a.

As shown inFIG.1, the plurality of seam display units3are all first seam display units3a, and the tiled display apparatus includes four first seam display units3a.

The main display driving board2further configured to acquire at least one first seam region display signal according to the display signal, and transmit the at least one first seam region display signal to the at least one first seam display unit3acoupled thereto, respectively. Each first seam region display signal includes a group of first seam region display data, and the group of first seam region display data is display data required for a single first seam display unit3ato display an image.

For example, the main display driving board2is further configured to divide the display signal according to the number of the plurality of first seam display units3a, so as to obtain the at least one first seam region display signal.

Each first seam display unit3ais configured to receive a first seam region display signal to display an image according to a group of first seam region display data included in the first seam region display signal.

The tiled display apparatus provided by the embodiments of the present disclosure further includes the at least one first seam display unit. The main display driving board2acquires the main screen region display signal and the at least one first seam region display signal simultaneously according to the display signal, and transmits the main screen region display signal to the first stage system board11and transmits the at least one first seam region display signal to the at least one first seam display unit3acoupled thereto, respectively, at the same time. In this way, the plurality of display modules1and the at least one first seam display unit may display images simultaneously, thereby displaying an image at the tiled position of two adjacent display modules1, realizing the display of a complete image on the entire tiled screen, and optimizing the display effect.

In some embodiments, the plurality of seam display units further include at least one second seam display unit3b.

For example, as shown inFIG.2, the number of display modules1included in the tiled display apparatus is nine. Therefore, the number of the plurality of seam display units3is twelve. The twelve seam display units3include six first seam display units3aand six second seam display units3b.

In this case, the tiled display apparatus further includes at least one secondary display driving board4. The at least one secondary display driving board4is coupled to the main display driving board2, and each secondary display driving board4is coupled to one or more second seam display units3b.

In the above embodiments, in a case where the tiled display apparatus includes a large number of display modules1and seam display units3(for example, the tiled display apparatus includes more than six display modules1and more than seven seam display units), at least one secondary display driving board4may be provided in the tiled display apparatus, and the plurality of seam display units may be divided into a plurality of groups, and each group of seam display units respectively coupled to different display driving boards (including the main display driving board2and the secondary display driving board4).

In some embodiments, as shown inFIGS.2and3, among the plurality of seam display units3included in the tiled display apparatus, seam display units3coupled to the main display driving board2are grouped into a group, and are as first seam display units31; the remaining seam display units are all used as second seam display units32, and the second seam display units32are divided into at least one group, and each group of second seam display units32coupled to a single secondary display driving board4. This arrangement enables allocation of a reasonable number of transmission interfaces to each display driving board, and allocation of a reasonable signal processing burden and signal transmission burden to each display driving board, thereby ensuring the normal operation of the tiled display apparatus.

For example, as shown inFIG.2, in the case where the number of display modules1included in the tiled display apparatus is nine, and the number of the plurality of seam display units is twelve, the tiled display apparatus further includes a secondary display driving board4, which is coupled to the main display driving board2. The twelve seam display units include six first seam display units3aand six second seam display units3b. The six first seam display units3aare grouped into a group, and are all coupled to the main display driving board2; the six second seam display units3bare grouped into a group, and are all coupled to the secondary display driving board4.

For example, as shown inFIG.3, in a case where the number of display modules1included in the tiled display apparatus is twelve, and the number of the plurality of seam display units is seventeen, the tiled display apparatus further includes two secondary display driving boards4, which are both coupled to the main display driving board2. The seventeen seam display units include six first seam display units3aand eleven second seam display units3b. The six first seam display units3aare grouped into a group, and are all coupled to the main display driving board2. In the eleven second seam display units3b, six second seam display units3bare grouped into a group, and are all coupled to a secondary display driving board4(which is located at the display module1numbered “C”); the remaining five second seam display units3bare grouped into a group, and are all coupled to another secondary display driving board4(which is located at the display module1numbered “I”).

The above are only two examples of the division mode of the plurality of first seam display units3aand the plurality of second seam display units3bin the tiled display apparatus, and the coupling relationship between the seam display units and the main display driving board2or the secondary display driving board4. In practical applications, corresponding arrangements may be made according to specific requirements, which are not limited to the above two manners, and the present disclosure is not limited thereto.

The main display driving board2is further configured to acquire at least one second seam region display signal according to the display signal, and transmit the at least one second seam region display signal to the at least one secondary display driving board4, respectively. Each second seam region display signal includes at least one group of second seam region display data, and a group of second seam region display data is display data required for a second seam display unit3bto display an image.

Each secondary display driving board4is configured to receive a second seam region display signal and transmit at least one group of second seam region display data included in the second seam region display signal to one or more second seam display units3bcoupled thereto, respectively.

For example, the secondary display driving board4is a FPGA driving board. The FPGA driving board is integrated with a data allocation unit, so that the data allocation unit may transmit the at least one group of second seam region display data included in the received second seam region display signal to the at least one second seam region display unit3bcoupled to FPGA driving board, respectively.

Each second seam display unit3bis configured to receive a group of second seam region display data to display an image according to the group of second seam region display data.

In some embodiments, as shown inFIG.2, in the case where the number of display modules1included in the tiled display apparatus is nine, the tiled display apparatus includes one main display driving board2and one secondary display driving board4. The secondary display driving board4is coupled to the main display driving board2, and is further coupled to six second seam display units3b.

In the tiled display apparatus, the main display driving board2acquires a second seam region display signal according to the display signal, and transmits the second seam region display signal to the secondary display driving board4. The second seam region display signal includes six groups of second seam region display data, and a single group of second seam region display data is display data required for a single second seam display unit3bto display an image. The secondary display driving board4receives the second seam region display signal, and transmits the six groups of second seam region display data included in the second seam region display signal to the six seam display units3bcoupled thereto, respectively. The second seam display unit3breceives the second seam region display data to display an image according to the second seam region display data.

In some other embodiments, as shown inFIG.3, in the case where the number of display modules1included in the tiled display apparatus is twelve, the tiled display apparatus includes one main display driving board2and two secondary display driving boards4. The two secondary display driving boards4are coupled to the main display driving board2; of the two secondary display driving boards4, one secondary display driving board4(located at the display module1numbered “C”) is further coupled to six second seam display units3b, and the other secondary display driving board4(located at the display module1numbered “I”) is further coupled to the remaining five second seam display units3b.

In the tiled display apparatus, the main display driving board2acquires two second seam region display signals according to the display signal, and transmits the two second seam region display signals to the two secondary display driving boards4, respectively. Of the two second seam region display signals, one second seam region display signal includes six groups of second seam region display data, and the other second seam region display signal includes five groups of second seam region display data, a single group of second seam region display data being display data required for a single second seam display unit3bto display an image. Of the two secondary display driving boards4, one secondary display driving board4(located at the display module1numbered “C”) receives the second seam region display signal including the six groups of second seam region display data, and transmits the six groups of second seam region display data included in the second seam region display signal to the six seam display units3bcoupled thereto, respectively; the other secondary display driving board4(located at the display module1number “I”) receives the second seam region display signal including the five groups of second seam region display data, and transmits the five groups of second seam region display data included in the second seam region display signal to the five seam display units3bcoupled thereto, respectively. The second seam display unit3breceives the second seam region display data to display an image according to the second seam region display data.

The tiled display apparatus provided by the embodiments of the present disclosure includes a plurality of display modules1and a plurality of seam display units3. In this case, the main display driving board2acquires the main screen region display signal, the at least one first seam region display signal and the at least one second seam region display signal simultaneously according to the display signal, and transmits the main screen region display signal to the first stage system board11, transmits the at least one first seam region display signal to the at least one first seam display unit3a, respectively, and transmits the at least one second seam region display signal to the at least one secondary display driving board4coupled thereto, respectively, at the same time; and then, the secondary display driving board4transmits the respective second seam region display data to the second seam display units3bcoupled thereto. In this way, the plurality of display modules1and the plurality of seam display units (the first seam display units3aand the second seam display units3b) may display images simultaneously, thereby displaying an image at the tiled position of two adjacent display modules1, realizing the display of a complete image on the entire tiled screen, and optimizing the display effect.

In a case where the number of the display modules1included in the tiled display apparatus is large, for example, in a case where the number of display modules1is greater than six, the number of the seam display units included is also large. In the above embodiments, by providing at least one secondary display driving board4, and by arranging that the second seam region display signal is transmitted to the secondary display driving board4, and then the secondary display driving board4transmits the groups of seam region display data to the second seam display units3bcoupled thereto respectively, it may be possible to lower the signal processing and signal transmission burden of the main display driving board2, and reduce the number of transmission interfaces required on the main display driving board2. As such, the normal display of the tiled display apparatus may be ensured, and the cost may be reduced.

In some embodiments, the number of seam display units controlled by the main display driving board2and the number of seam display units controlled by each secondary display driving board4need to be configured in a way that the signal processing burden is reasonably allocated among the display driving boards and the number of interfaces required on each display driving board is reasonable. For example, the number of the first seam display units3ais less than or equal to seven, and the number of the second seam display units3bcoupled to a single secondary display driving board4is less than or equal to seven. With this arrangement, the number of seam display units controlled by the main display driving board2and the number of seam display units controlled by each secondary display driving board4may be reasonably set, so that the signal processing burdens of the main display driving board2and each secondary display driving board4are all within a reasonable range. In addition, the number of interfaces required on the main display driving board2and the secondary display driving board4are relatively reasonable. As a result, the normal operation of the main display driving board2and the secondary display driving board4may be ensured, and the cost may be saved.

In some embodiments, the first seam display unit(s)3aare closer to the main display driving board2than the second seam display unit(s)3b.

That is, the main display driving board2is coupled to the at least one first seam display unit3aproximate to the main display driving board2among the plurality of seam display units. In this way, a length of the coupling wire may be reduced, and the regularity of a plurality of coupling wires may be improved, which may facilitate the coupling of the main display driving board2to the first seam display units3a, and reduce the difficulty of assembling the tiled display apparatus.

In some embodiments, each secondary display driving board4is coupled to at least one second seam display unit3bproximate to the secondary display driving board4among the second seam display units3b. In this way, the length of the coupling wire may be reduced, which may prevent the plurality of coupling wires from being too long and messy, and reduce the assembling difficulty.

In some embodiments, the main display driving board2is disposed on the display module1to which the first stage system board11, which is coupled to the main display driving board2, belongs. Each secondary display driving board4is disposed on any one of the display modules1adjacent to the at least one second seam display unit3b, which is coupled to the secondary display driving board4.

For example, as shown inFIGS.1to3, the main display driving board2is disposed on the display module1numbered “A” to which the first stage system board11belongs. As shown inFIG.2, the secondary display driving board4is provided on the display module1numbered “C”, and the display module1is the display module1adjacent to the six second seam display units3bthat are coupled to the secondary display driving board4.

By arranging the positions of the main display driving board2and the secondary display driving board4in the above manner, it may be more convenient to couple the main display driving board2to the first stage system board11, and couple the secondary display driving board4to the second seam display units3bcontrolled by the secondary display driving board4. Moreover, the length of the coupling wire may be reduced, and the assembly difficulty may be reduced.

In some embodiments, the seam display units3are mini light-emitting diode (mini LED) display units.

In some examples, as shown inFIGS.5and6, the seam display unit3includes a light plate31. For example, a width d1of the light plate31is 3.9 mm and a thickness d4of the light plate31is 0.8 mm. The light plate31includes a plurality of pixels311, and the plurality of pixels311are arranged in an array. For example, inFIG.1, the light plate31of the seam display unit3arranged horizontally includes three rows of pixels311, and the number of pixels311included therein is (960×3), which equals to 2,880. The light plate31of the seam display unit3arranged vertically includes three columns of pixels311, and the number of pixels311included therein is (543×3), which equals to 1,629.

As shown inFIG.5, each pixel311includes three mini LED chips3111, which are configured to emit red, green, and blue light (i. e. RGB), respectively. For example, as shown inFIGS.5and6, the size of a single pixel311is: 1 mm×1 mm×0.65 mm. That is, a length d5and a width d5of the pixel311are both 1 mm, and a height d6thereof is 0.65 mm. A distance between two adjacent pixels311at the same position thereof is 1.26 mm, and a distance d3between the outermost pixel311and the edge of the light plate31is 0.2 mm.

The mini LED display unit has a small pixel spacing and a small pixel size. In a case where the display module1is a liquid crystal display module, the difference between the pixel spacing of the mini LED display unit and the pixel spacing of the liquid crystal display module is small (as shown inFIG.6, the display module1includes a plurality of pixels311, and each pixel311includes three sub-pixels); therefore, the pixel alignment accuracy at the boundary between the mini LED display unit and the liquid crystal display module is very high, and the problem of inaccurate alignment is unlikely to occur, making the displayed image more complete. In addition, corresponding signals of the plurality of seam display units3and the display modules1are all divided and controlled by the main display driving board2, so that the main display driving board2may be able to adjust the display effect at the boundaries between the display modules1and the seam display units. For example, the main display driving board2may blur the edges of the images, so as to weaken the boundaries between the display modules1and the seam display units. In this way, the seams in the image displayed by the entire tiled screen may be less obvious to the human eye, thereby improving the display effect. For example, the display effect of the tiled display apparatus provided by the present disclosure may be as shown inFIG.7B, from which it can be seen that the seams are not obvious in the entire image, and the displayed image is more complete with a good visual effect.

In some examples, the main display driving board2is further configured to, according to a resolution of the display module1, a resolution of the seam display unit, and the main screen region display signal and seam region display signal acquired according to the display signal, match the resolution of an image characterized by the main screen region display data included in the main screen region display signal with the resolution of the display module1, and match the resolution of an image characterized by the seam region display data included in the seam region display signal with the resolution of the seam display unit, so as to optimize the display effect.

In the seam display units provided by some embodiments of the present disclosure, the plurality of display modules1, the plurality of first seam display units3aand the plurality of second seam display units3bare all controlled by the main display driving board2(in a direct or indirect manner) to display images. In some embodiments, the main display driving board2is further configured to set the display parameters of the display modules1, the plurality of first seam display units3a, and the plurality of second seam display units3b, so that the display modules1and the plurality of seam display units have similar visual effects or the same visual effect. For example, the display parameters include brightness, chromaticity, contrast and the like. In this way, the image displayed by the entire tiled screen may have a display effect of uniform brightness and uniform chromaticity in all the regions.

In some embodiments, the seam display unit further includes a driving board. The driving board is configured to drive the light plate to display an image. For example, the driving board is connected to the light plate by a flexible printed circuit (FPC). As for the first seam display unit3a, the driving board thereof is coupled to the main display driving board2, and is configured to receive the first seam region display signal transmitted by the main display driving board2, and control the light plate to display an image according to the first seam region display signal. Alternatively, as for the second seam display unit3b, the driving board thereof is coupled to the secondary display driving board4, and is configured to receive the second seam region display signal transmitted by the secondary display driving board4, and control the light plate to display an image according to the second seam region display signal.

In some embodiments, as for the tiled display apparatus as shown inFIGS.2and3, that is, in a case where the tiled display apparatus further includes at least one first seam display unit3a, at least one second seam display unit3band at least one secondary display driving board4, as shown inFIG.4, the main display driving board2further includes at least one second output interface23and at least one third output interface24.

The at least one second output interface23is respectively coupled to the at least one first seam display unit3a. The second output interface23is configured to transmit the first seam region display signal acquired according to the display signal to the first seam display unit3acoupled thereto. For example, the second output interface23is a serial peripheral interface (SPI).

The at least one third output interface24is respectively coupled to the at least one secondary display driving board4. The third output interface24is configured to transmit the second seam region display signal acquired according to the display signal to the secondary display driving board4coupled thereto. The third output interface24is a HDMI.

In some embodiments, the secondary display driving board4includes a seam display signal input interface and at least one seam display data output interface.

The seam display signal input interface of the secondary display driving board4is coupled to the third output interface24of the main display driving board2, and the seam display signal input interface is configured to receive the second seam region display signal transmitted by the main display driving board2. For example, the seam display signal input interface is a HDMI.

The at least one seam display data output interface is respectively coupled to the at least one second seam display unit3b, and the seam display data output interface is configured to transmit the at least one group of second seam region display data included in the second seam region display signal to the second seam display unit3bcoupled thereto, respectively. For example, the second output interface is a SPI.

In some embodiments, as shown inFIGS.1to3, each display module1further includes a timing controller12. The timing controller12is coupled to the system board11.

The system board11is further configured to output a timing control signal and a RGB data signal according to the extracted main screen region display data. In some examples, the system board11includes a data output interface. The data output interface is configured to transmit the timing control signal and the RGB data signal to a timing controller12. For example, the data output interface is a low-voltage differential signaling (LVDS) interface.

The timing controller is configured to receive the timing control signal and the RGB data signal, and control the display module to display an image according to the timing control signal and the RGB data signal.

For example, the display module1further includes a gate driving circuit and a data driving circuit. The gate driving circuit is coupled to the timing controller12, and is further coupled to gate lines in the display screen. The data driving circuit is coupled to the timing controller12, and is further coupled to data lines in the display screen. The timing controller is configured to receive the timing control signal and the RGB data signal, and output signals to control the gate driving circuit and the data driving circuit to input certain voltages to the display screen at a certain time according to the timing control signal and the RGB data signal, so as to control the display screen to display the image.

In some embodiments, as shown inFIGS.1to3, the tiled display apparatus further includes a first power circuit5. The first power circuit5is coupled to the main display driving board2. The first power circuit5is configured to provide power to the main display driving board2.

In some embodiments, as shown inFIGS.1to3, each display module1further includes a second power circuit13. The second power circuit13is coupled to the system board11. The second power circuit13is configured to provide power to the system board11coupled thereto.

The system board11achieves the extraction of the main screen region display data and the transmission of the main screen region display signal according to a received power, and transmits the received power to other electronic components in the display module1, such as the timing controller12, so as to provide power for the other electronic components to ensure normal operation.

In some embodiments, as shown inFIGS.1to3, in the case where the tiled display apparatus further includes at least one secondary display driving board4, the tiled display apparatus further includes at least one third power circuit6. The at least one third power circuit6is respectively coupled to the at least one secondary display driving board4. The third power circuit6is configured to provide power to the secondary display driving board4coupled thereto.

In some examples, the first power circuit5is further coupled to the at least one first seam display unit3a, such that the first power circuit5provides power to the at least one first seam display unit3a. Each third power circuit6is further coupled to at least one second seam display unit3b, which is controlled by the secondary display driving board4coupled to the third power circuit6, so that the third power circuit6provides power to the at least one second seam display unit3b.

Some embodiments of the present disclosure further provides a tiled display control method applied to the tiled display apparatus as provided by the embodiments of the present disclosure. As shown inFIGS.8and9, the tiled display control method includes steps as followings.

In S1, the main display driving board2of the tiled display apparatus receives the display signal.

In S2, the main display driving board2acquires the main screen region display signal according to the display signal, and transmits the main screen region display signal to the first stage system board11among the system boards11of the display modules1of the tiled display apparatus. The main screen region display signal includes a plurality of groups of main screen region display data, and a group of main screen region display data is display data required for a display module to display an image.

In some embodiments, acquiring, by the main display driving board2, the main screen region display signal according to the display signal, includes: dividing, by the main display driving board2, the display signal according to the number of the plurality of system boards11, so as to obtain the main screen region display signal including the plurality of groups of main screen region display data.

In S3, the first stage system board11receives the main screen region display signal transmitted by the main display driving board2; except for the last stage system board11, remaining system boards each transmits the received main screen region display signal to the next stage system board11; and

except for the first stage system board11, remaining system boards11each receives the main screen region display signal transmitted by a previous stage system board11.

In S4, each stage system board11extracts a group of main screen region display data corresponding to the system board from the received main screen region display signal to control a corresponding display module1to display an image according to the extracted group of main screen region display data.

In S5, each display module displays an image according to the group of main screen region display data.

In the above tiled display control method, the main display driving board2acquires a main screen region display signal according to the display signal, and transmits the main screen region display signal to the first stage system board11. Through transmission of the main screen region display signal from the first stage system board11to the penultimate stage system board11, the transmission of the main screen region display signal among the system boards11from stage to stage is realized. In addition, each stage system board11extracts corresponding main screen region display data from the received main screen region display signal to control a corresponding display module1to display an image according to the extracted main screen region display data. As a result, all the display modules1included in the tiled display apparatus display corresponding sub-images, thereby allowing the entire tiled screen to form a complete image.

In some embodiments, as shown inFIGS.2and3, in a case where the tiled display apparatus further includes a plurality of seam display units3, and the plurality of seam display units3include at least one first seam display unit3a, as shown inFIGS.8and9, the tiled display control method further includes steps as followings.

In S2′, the main display driving board2acquires at least one first seam region display signal according to the display signal, and transmits the at least one first seam region display signal to the at least one first seam display unit3acoupled thereto, respectively. Each first seam region display signal includes a group of first seam region display data, and a group of first seam region display data is display data required for a first seam display unit3ato display an image.

In S3′, each first seam display unit receives a first seam region display signal to display an image according to a group of first seam region display data included in the first seam region display signal.

In a case where the tiled display apparatus provided by the embodiments of the present disclosure further includes a plurality of seam display units3a, the main display driving board2acquires the main screen region display signal and the at least one first seam region display signal simultaneously according to the display signal, and transmits the main screen region display signal to the first stage system board11and transmits the at least one first seam region display signal to the at least one first seam display unit3acoupled thereto, respectively, at the same time. In this way, the plurality of display modules1and the plurality of seam display units may display images simultaneously, thereby displaying an image at the tiled position of two adjacent display modules1, realizing the display of a complete image on the entire tiled screen, and optimizing the display effect.

In some embodiments, as shown inFIG.3, the plurality of seam display units further include at least one second seam display unit3b, and the tiled display apparatus further includes at least one secondary display driving board4. As shown inFIG.9, the tiled display control method further includes steps as followings.

In S2″, the main display driving board2acquires at least one second seam region display signal according to the display signal, and transmits the at least one second seam region display signal to the at least one secondary display driving board4, respectively. Each second seam region display signal includes at least one group of second seam region display data, and a group of second seam region display data is display data required for a second seam display unit3bto display an image.

In S3″, each secondary display driving board4receives a second seam region display signal, and transmits at least one group of second seam region display data included in the second seam region display signal to at least one second seam display unit3bcoupled thereto, respectively.

In S4″, each second seam display unit3breceives a group of second seam region display data to display an image according to the group of second seam region display data.

In a case where the tiled display apparatus provided by the embodiments of the present disclosure further includes a plurality of seam display units, and the plurality of seam display units include the first seam display unit(s)3aand the second seam display unit(s)3b, the main display driving board2acquires the main screen region display signal, the at least one first seam region display signal and the at least one second seam region display signal simultaneously according to the display signal, and transmits the main screen region display signal to the first stage system board11, transmits the at least one first seam region display signal to the at least one first seam display unit3a, respectively, and transmits the at least one second seam region display signal to the at least one secondary display driving board4coupled thereto, respectively, at the same time; and then, the secondary display driving board4transmits groups of the second seam region display data to the second seam display units3bcoupled thereto, respectively. In this way, the plurality of display modules1and the plurality of seam display units (the first seam display unit(s)3aand the second seam display unit(s)3b) may display images simultaneously, thereby displaying an image at the tiled position of two adjacent display modules1, realizing the display of a complete image on the entire tiled screen, and optimizing the display effect.

In some embodiments, the tiled display control method further includes: setting, by the main display driving board2, display parameters of the display modules1, the plurality of first seam display units3a, and the plurality of second seam display units3b, so that the display modules1and the plurality of seam display units have similar visual effects or a same visual effect. For example, the display parameters include brightness, chromaticity, contrast and the like. In this way, the image displayed by the entire tiled screen may have a display effect of uniform brightness and uniform chromaticity in all the regions.

Some embodiments of the present disclosure further provide a computer-readable storage medium. The computer-readable storage medium has stored thereon computer program instructions that, when executed on a processor, cause the processor to perform one or more steps of the tiled display control method provided by the embodiments of the present disclosure.

For example, the computer-readable storage medium includes, but is not limited to, a magnetic storage device (e.g., a hard disk, a floppy disk or a magnetic tape), an optical disk (e.g., a compact disk (CD) or a digital versatile disk (DVD)), a smart card, a flash memory device (e.g., an erasable programmable read-only memory (EPROM), a card, a stick or a key driver). Various computer-readable storage media described in the embodiments of the present disclosure may represent one or more devices and/or other machine-readable storage media for storing information. The term “machine-readable storage media” include, but are not limited to, wireless channels and various other media capable of storing, containing and/or carrying instructions and/or data.

Some embodiments of the present disclosure further provide a computer program product. The computer program product includes computer program instructions that, when executed on a computer, cause the computer to perform one or more steps in the tiled display control method provided by the embodiments of the present disclosure.

Some embodiments of the present disclosure further provide a computer program. When executed on a computer, the computer program causes the computer to perform one or more steps in the tiled display control method provided by the embodiments of the present disclosure.

The computer-readable storage medium, the computer program product and the computer program have the same beneficial effects as the tiled display control method provided in the embodiments of the present disclosure, and details will not be repeated here.