Display module and combined display module

Abstract

This invention discloses a display module and a combined display module, comprising a controller and a plurality of display devices arranged in an m x n array. The controller is connected to the plurality of display devices, and adjacent columns of display devices in the same row are interconnected. Each display device includes two or more bidirectional control signal ports. The bidirectional control signal ports on the second side of the back surface of the carrier of the display device in the first column of the same row, the bidirectional control signal ports on the second side of the back surface of the carrier of the display device in the second column, the bidirectional control signal ports on the first side of the back surface of the carrier of the display device in the third column, and the bidirectional control signal ports on the first side of the back surface of the carrier of the display device in the fourth column are interconnected. The display module of this invention adopts a four-pin display device structure, is compatible with bidirectional transmission of control signals, and can realize the function of resuming interrupted transmission.

Description

Technical Field

[0001] This invention relates to the field of display module technology, and more particularly to a display module and a combined display module. Background Technology

[0002] Currently, display devices used in display modules typically employ a structure with built-in driver IC chips. These devices are connected in series, and a controller connects to the driver IC chip to transmit control signals, thereby controlling the electrical display of the corresponding devices. However, existing display devices are only connected to adjacent devices. When one device in a row malfunctions or is damaged, the control signal is blocked in that faulty device, causing the entire row to malfunction and affecting the overall display effect of the display module. Furthermore, with the limitation of smaller device sizes, the number of pins on the device ports cannot be too high, otherwise the manufacturing process becomes very difficult. Therefore, how to simultaneously achieve small-sized devices and power-off resume transmission becomes a challenge. Additionally, when the display screen is large and uses a large number of display devices, if only single-sided control signal transmission from the left or right side is used, significant signal transmission delays will occur in large-area displays. The first solution is to use a combined display module that drives both the left and right sides simultaneously. However, if this combination uses display devices with completely identical structures, two sets of complex long-distance signal lines need to be laid on the carrier, making the circuit design very difficult. The second solution is to use a combination of left and right display modules, but this requires the left and right display modules to use devices with different structures. That is, the functions of the port pins in the display devices need to be adjusted to adapt to the control signal transmission of the left side and the control signal transmission of the right side, which further increases the variety of display devices and increases the manufacturing cost. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides a display module with a four-pin display device structure, which is compatible with bidirectional transmission of control signals and can realize the function of resuming interrupted transmission.

[0004] This invention provides a display module, which includes a controller and a plurality of display devices arranged in m rows. The array is arranged in n columns, and the controller is connected to the plurality of display devices. The display devices in adjacent columns within the same row are interconnected.

[0005] Where m is a positive integer, n is a positive integer, and n is a multiple of 2, n > 3; Any of the display devices includes two or more bidirectional control signal ports, at least one bidirectional control signal port is disposed on a first side of the back surface of the carrier of the display device, and at least one bidirectional control signal port is disposed on a second side of the back surface of the carrier of the display device, wherein the first side and the second side of the back surface of the carrier are disposed opposite to each other. The bidirectional control signal port on the first side of the back of the carrier of the display device in the first column of the same row is connected to the bidirectional control signal port on the first side of the back of the carrier of the display device in the second column. The bidirectional control signal ports on the second side of the back of the carrier of the display device in the first column of the same row, the bidirectional control signal ports on the second side of the back of the carrier of the display device in the second column, the bidirectional control signal ports on the first side of the back of the carrier of the display device in the third column, and the bidirectional control signal ports on the first side of the back of the carrier of the display device in the fourth column are interconnected. The bidirectional control signal ports on the second side of the back of the carrier of the display device in the same row (j-3), the bidirectional control signal ports on the second side of the back of the carrier of the display device in the same row (j-2), the bidirectional control signal ports on the first side of the back of the carrier of the display device in the same row (j-1), and the bidirectional control signal ports on the first side of the back of the carrier of the display device in the same row (j-1) are interconnected. The bidirectional control signal port on the second side of the back of the carrier of the display device in the same row (j-1) is connected to the bidirectional control signal port on the second side of the back of the carrier of the display device in the j-th column. The controller's control signal port is connected to the bidirectional control signal port on the first side of the back of the carrier of the display device in the i-th row and 1-th column and the bidirectional control signal port on the first side of the back of the carrier of the display device in the i-th row and 2-th column. Alternatively, the control signal port of the controller can be connected to the bidirectional control signal port on the second side of the back of the carrier of the display device in the i-th row and n-th column and the bidirectional control signal port on the second side of the back of the carrier of the display device in the i-th row and n-1-th column. Where 1≤i≤m, 3<j≤n, and i and j are both positive integers.

[0006] Furthermore, the display device includes a first bidirectional control signal port and a second bidirectional control signal port, wherein the first bidirectional control signal port is disposed on a first side of the back surface of the carrier of the display device, and the second bidirectional control signal port is disposed on a second side of the back surface of the carrier of the display device. The first bidirectional control signal port on the first side of the back of the carrier of the display device in the first column of the same row is connected to the first bidirectional control signal port on the first side of the back of the carrier of the display device in the second column. The second bidirectional control signal port on the second side of the back of the carrier of the display device in the first column of the same row, the second bidirectional control signal port on the second side of the back of the carrier of the display device in the second column, the first bidirectional control signal port on the first side of the back of the carrier of the display device in the third column, and the first bidirectional control signal port on the first side of the back of the carrier of the display device in the fourth column are interconnected. The second bidirectional control signal port on the second side of the back of the carrier of the display device in the same row (j-3), the second bidirectional control signal port on the second side of the back of the carrier of the display device in the same row (j-2), the first bidirectional control signal port on the first side of the back of the carrier of the display device in the same row (j-1), and the first bidirectional control signal port on the first side of the back of the carrier of the display device in the same row (j-1) are interconnected. The second bidirectional control signal port on the second side of the back of the carrier of the display device in the same row (j-1) is connected to the second bidirectional control signal port on the second side of the back of the carrier of the display device in column j.

[0007] Furthermore, the controller is disposed on the left side of the plurality of display devices, and the control signal port of the controller is connected to the first bidirectional control signal port on the first side of the back of the carrier of the display device in the i-th row and the 1-th column and the first bidirectional control signal port on the first side of the back of the carrier of the display device in the i-th row and the 2-th column.

[0008] Furthermore, the controller is located on the right side of the plurality of display devices, and the control signal port of the controller is connected to the second bidirectional control signal port on the second side of the back of the carrier of the display device in the i-th row and n-th column and the second bidirectional control signal port on the second side of the back of the carrier of the display device in the i-th row and n-1-th column.

[0009] Furthermore, the display device also includes bidirectional control signal pads, which are disposed on the front side of the carrier of the display device. The number of bidirectional control signal pads is the same as the number of bidirectional control signal ports, and the bidirectional control signal pads are electrically connected to the bidirectional control signal ports one-to-one.

[0010] Furthermore, the display device also includes a power port and a ground port, which are disposed on the back of the carrier of the display device. The power ports of the display devices in the same row are connected in series and electrically connected to the power control port of the controller. The ground port of the display device is grounded. The display device further includes a power pad and a ground pad, which are disposed on the front side of the carrier of the display device. The power pad is electrically connected to the power port, and the ground pad is electrically connected to the ground port.

[0011] Furthermore, a driver IC chip and an LED chip are also disposed on the front side of the carrier of the display device. The driver IC chip is electrically connected to the bidirectional control signal pad, the power pad and the ground pad, and the LED chip is electrically connected to the driver IC chip and the power pad.

[0012] Furthermore, the logic state of the storage bit of the driver IC chip in the display device in the i-th row and j-1-th column is different from the logic state of the storage bit of the driver IC chip in the display device in the i-th row and j-th column. Where i is a positive integer, and 3 < i ≤ n.

[0013] The present invention also provides a combined display module, the combined display module including a first display module and a second display module, the first display module being the display module described above, the second display module being the display module described above, the right side of the first display module and the left side of the second display module being spliced ​​together, the first display module and the second display module being combined and spliced ​​together to form the combined display module.

[0014] Furthermore, the controller in the first display module is located on the left side of all display devices in the first display module; The controller in the second display module is located on the right side of all display devices in the second display module.

[0015] This invention provides a display module and a combined display module. The display devices arranged in an array within the display module employ a port configuration structure with bidirectional control signal ports respectively located on both sides of the back of the carrier. A special connection method is used, with two display devices in the same row forming a group. The second bidirectional control signal ports of the two display devices in the first group are connected in parallel and then connected to the first bidirectional control signal ports of the two display devices in the second group, which are also connected in parallel. In other words, four display devices are simultaneously interconnected, forming a 2... The control signal transmission line of the 2-pin array enables multi-channel transmission of control signals, with multiple control signals serving as backups for each other, achieving breakpoint resume functionality. This effectively prevents the overall display effect of the display module from being affected by the failure of a single display device, thus improving display efficiency. The display device adopts a four-port pin scheme, which reduces the difficulty of the manufacturing process. Furthermore, the control signal ports on the display device are all bidirectional control signal ports, simultaneously adapting to left and right control signal transmission, achieving the effect of transmission from both sides. This bidirectional transmission of control signals reduces manufacturing costs, making it suitable for large-screen display module splicing scenarios, with stronger applicability and better display effects. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the display module structure connection in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the back of the display device structure in Embodiment 1 of the present invention; Figure 3 This is a front view of the display device structure in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the display module structure connection in Embodiment 2 of the present invention; Figure 5 This is a schematic diagram of the combined display module structure connection in Embodiment 3 of the present invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In this invention, it should be understood that terms such as “comprising” or “having” are intended to indicate the presence of features, figures, steps, behaviors, components, portions or combinations thereof disclosed in this specification, and are not intended to exclude the possibility that one or more other features, figures, steps, behaviors, components, portions or combinations thereof are present or added.

[0020] It should also be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Example 1 Embodiment 1 of the present invention provides a display module, the display module including a controller and a plurality of display devices, the plurality of display devices being arranged in m rows. The array is arranged in n columns, and the controller is connected to the plurality of display devices. The display devices in adjacent columns within the same row are interconnected. Where m is a positive integer, n is a positive integer, and n is a multiple of 2, n > 3; Any of the display devices includes two or more bidirectional control signal ports, at least one bidirectional control signal port is disposed on a first side of the back surface of the carrier of the display device, and at least one bidirectional control signal port is disposed on a second side of the back surface of the carrier of the display device, wherein the first side and the second side of the back surface of the carrier are disposed opposite to each other. The bidirectional control signal port on the first side of the back of the carrier of the display device in the first column of the same row is connected to the bidirectional control signal port on the first side of the back of the carrier of the display device in the second column. The bidirectional control signal ports on the second side of the back of the carrier of the display device in the first column of the same row, the bidirectional control signal ports on the second side of the back of the carrier of the display device in the second column, the bidirectional control signal ports on the first side of the back of the carrier of the display device in the third column, and the bidirectional control signal ports on the first side of the back of the carrier of the display device in the fourth column are interconnected. The bidirectional control signal ports on the second side of the back of the carrier of the display device in the same row (j-3), the bidirectional control signal ports on the second side of the back of the carrier of the display device in the same row (j-2), the bidirectional control signal ports on the first side of the back of the carrier of the display device in the same row (j-1), and the bidirectional control signal ports on the first side of the back of the carrier of the display device in the same row (j-1) are interconnected. The bidirectional control signal port on the second side of the back of the carrier of the display device in the same row (j-1) is connected to the bidirectional control signal port on the second side of the back of the carrier of the display device in the j-th column. The controller's control signal port is connected to the bidirectional control signal port on the first side of the back of the carrier of the display device in the i-th row and 1-th column and the bidirectional control signal port on the first side of the back of the carrier of the display device in the i-th row and 2-th column. Alternatively, the control signal port of the controller can be connected to the bidirectional control signal port on the second side of the back of the carrier of the display device in the i-th row and n-th column and the bidirectional control signal port on the second side of the back of the carrier of the display device in the i-th row and n-1-th column. Where 1≤i≤m, 3<j≤n, and i and j are both positive integers.

[0022] In one optional implementation of this embodiment, such as Figure 1 As shown, Figure 1 A schematic diagram of the display module structure connection in Embodiment 1 of the present invention is shown. The display module includes a controller 1 and display devices arranged in a 1x4 array, including a first display device 21 in the first row and first column, a second display device 22 in the first row and second column, a third display device 23 in the first row and third column, and a fourth display device 24 in the first row and fourth column, wherein the first display device 21, the second display device 22, the third display device 23, and the fourth display device 24 are interconnected.

[0023] Furthermore, it can be viewed that the display devices are grouped in pairs, with the two display devices in the same group connected in parallel, and the display devices between groups connected in series. That is, the first display device 21 and the second display device 22 form the first group, and the third display device 23 and the fourth display device 24 form the second group. The first display device 21 and the second display device 22 in the first group are connected in parallel, and the third display device 23 and the fourth display device 24 in the second group are connected in parallel. The first group and the second group are connected in series.

[0024] In one optional implementation of this embodiment, such as Figure 2 As shown, Figure 2 A schematic diagram of the back side of the display device structure in Embodiment 1 of the present invention is shown. The display device includes a carrier 3 and two bidirectional control signal ports, including a first bidirectional control signal port 41 and a second bidirectional control signal port 42. The first bidirectional control signal port 41 is disposed on the first side of the back side of the carrier 3, that is, on the left side of the back side of the carrier 3, and the second bidirectional control signal port 42 is disposed on the second side of the back side of the carrier 3, that is, on the right side of the back side of the carrier 3.

[0025] Specifically, in this embodiment, the first bidirectional control signal port 41 is used to receive input control signals and thereby control the display effect of the display device, and the second bidirectional control signal port 42 is used to transmit output control signals to the next display device.

[0026] Furthermore, the carrier 3 can be a cup holder or a substrate, depending on the actual design requirements.

[0027] In an optional implementation of this embodiment, the controller is disposed on the left side of the plurality of display devices, and the control signal port of the controller is connected to the first bidirectional control signal port on the first side of the back of the carrier of the display device in the i-th row and the 1-th column and the first bidirectional control signal port on the first side of the back of the carrier of the display device in the i-th row and the 2-th column.

[0028] Specifically, the controller 1 is located on the left side of the first display device 21, the second display device 22, the third display device 23 and the fourth display device 24, that is, the controller 1 is located on the left side of all display devices, and the display module adopts the left-side control signal transmission method.

[0029] In an optional implementation of this embodiment, the first bidirectional control signal port on the first side of the back surface of the carrier of the display device in the first column of the same row is connected to the first bidirectional control signal port on the first side of the back surface of the carrier of the display device in the second column. The second bidirectional control signal port on the second side of the back of the carrier of the display device in the first column of the same row, the second bidirectional control signal port on the second side of the back of the carrier of the display device in the second column, the first bidirectional control signal port on the first side of the back of the carrier of the display device in the third column, and the first bidirectional control signal port on the first side of the back of the carrier of the display device in the fourth column are interconnected. The second bidirectional control signal port on the second side of the back of the carrier of the display device in the same row (j-3), the second bidirectional control signal port on the second side of the back of the carrier of the display device in the same row (j-2), the first bidirectional control signal port on the first side of the back of the carrier of the display device in the same row (j-1), and the first bidirectional control signal port on the first side of the back of the carrier of the display device in the same row (j-1) are interconnected. The second bidirectional control signal port on the second side of the back of the carrier of the display device in the same row (j-1) is connected to the second bidirectional control signal port on the second side of the back of the carrier of the display device in column j.

[0030] Specifically, such as Figure 1 As shown, in the display module, the connection method of the first display device 21, the second display device 22, the third display device 23, and the fourth display device 24 in the same row, as well as the controller 1, is as follows: When the controller 1 is located to the left of the first display device 21, the second display device 22, the third display device 23 and the fourth display device 24, the control signal port D of the controller 1 is connected to the first bidirectional control signal port D1 of the first display device 21 and the first bidirectional control signal port D3 of the second display device 22. The second bidirectional control signal port D2 of the first display device 21, the second bidirectional control signal port D4 of the second display device 22, the first bidirectional control signal port D5 of the third display device 23, and the first bidirectional control signal port D7 of the fourth display device 24 are interconnected.

[0031] Specifically, the controller 1 outputs a control signal from its control signal port D, which is transmitted to the first bidirectional control signal port D1 of the first display device 21 and simultaneously to the first bidirectional control signal port D3 of the second display device 22. The second bidirectional control signal ports D2 of the first display device 21 and D4 of the second display device 22 simultaneously output control signals, which are then transmitted to the first bidirectional control signal port D5 of the third display device 23 and the first bidirectional control signal port D7 of the fourth display device 24, forming a 2... 2. The control signal transmission line realizes the multi-channel transmission of control signals, and the multiple control signals serve as backups for each other; This can be viewed as follows: the second bidirectional control signal port D2 of the first display device 21 and the second bidirectional control signal port D4 of the second display device 22 are interconnected; the first bidirectional control signal port D5 of the third display device 23 and the first bidirectional control signal port D7 of the fourth display device 24 are interconnected; and the connection end of the second bidirectional control signal port D2 of the first display device 21 and the second bidirectional control signal port D4 of the second display device 22 is connected to the connection end of the first bidirectional control signal port D5 of the third display device 23 and the first bidirectional control signal port D7 of the fourth display device 24.

[0032] Furthermore, when one of the first display device 21, the second display device 22, the third display device 23, and the fourth display device 24 fails, such as when the second display device 22 fails, the control signal output by the controller 1 can still be input through the first bidirectional control signal port D1 of the first display device 21 and output from the second bidirectional control signal port D2 of the first display device 21 to the first bidirectional control signal port D5 of the third display device 23 and the first bidirectional control signal port D7 of the fourth display device 24. The third display device 23 and the fourth display device 24 can still receive control signals normally and will not be affected by the failure of the second display device 22, realizing the function of resuming interrupted transmission. This effectively prevents the overall display effect of the display module from being affected by the failure of a single display device and improves display efficiency.

[0033] Furthermore, when the second display device 22 and the third display device 23 simultaneously fail among the first display device 21, the second display device 22, the third display device 23, and the fourth display device 24, the control signal output by the controller 1 can still be input through the first bidirectional control signal port D1 of the first display device 21 and output from the second bidirectional control signal port D2 of the first display device 21 to the first bidirectional control signal port D7 of the fourth display device 24. The fourth display device 24 can still receive control signals normally and will not be affected by the failure of the second display device 22 and the third display device 23, thus realizing the function of resuming interrupted transmission.

[0034] In one optional implementation of this embodiment, such as Figure 3 As shown, Figure 3A front view of the display device structure in Embodiment 1 of the present invention is shown. The display device further includes a first bidirectional control signal pad 51 and a second bidirectional control signal pad 52. The first bidirectional control signal pad 51 and the second bidirectional control signal pad 52 are disposed on the front side of the carrier 3 of the display device. The first bidirectional control signal pad 51 is electrically connected to the first bidirectional control signal port 41, and the second bidirectional control signal pad 52 is electrically connected to the second bidirectional control signal port 42.

[0035] Specifically, the first bidirectional control signal pad 51 is electrically connected to the first bidirectional control signal port 41 based on the metal line provided on the carrier 3, and the second bidirectional control signal pad 52 is electrically connected to the second bidirectional control signal port 42 based on the metal line provided on the carrier 3.

[0036] In an optional implementation of this embodiment, the display device further includes a power port 43 and a ground port 44, which are disposed on the back side of the carrier 3. The power ports VDD of the first display device 21, the second display device 22, the third display device 23, and the fourth display device 24 are connected in series and electrically connected to the power control port VDD of the controller 1. The ground ports GND of the first display device 21, the second display device 22, the third display device 23, and the fourth display device 24, as well as the ground control port GND of the controller 1, are grounded.

[0037] In an optional implementation of this embodiment, the display device further includes a power pad 53 and a ground pad 54, which are disposed on the front side of the carrier 3 of the display device. The power pad 53 is electrically connected to the power port 43, and the ground pad 54 is electrically connected to the ground port 44.

[0038] Specifically, the power pad 53 is electrically connected to the power port 43 based on the metal lines disposed on the carrier 3, and the ground pad 54 is electrically connected to the ground port 44 based on the metal lines disposed on the carrier 3.

[0039] In an optional implementation of this embodiment, a driver IC chip 6 is further disposed on the front side of the carrier 3 of the display device. The driver IC chip 6 is electrically connected to the first bidirectional control signal pad 51, the second bidirectional control signal pad 52, the power pad 53, and the ground pad 54.

[0040] Specifically, the driver IC chip 6 is electrically connected to the first bidirectional control signal pad 51, the second bidirectional control signal pad 52, the power pad 53, and the ground pad 54 based on wire bonding, solder paste soldering, and metal lines disposed on the carrier 3.

[0041] In an optional implementation of this embodiment, the driver IC chip 6 is a standard chip or a flip chip.

[0042] Specifically, in this embodiment, the driver IC chip 6 is a standard chip.

[0043] In an optional implementation of this embodiment, an LED chip 7 is further disposed on the front side of the carrier 3 of the display device, and the LED chip 7 is electrically connected to the driver IC chip 6 and the power pad 53.

[0044] Specifically, the LED chip 7 is electrically connected to the driver IC chip 6 and the power pad 53 based on wire bonding, solder paste welding and metal lines disposed on the carrier 3.

[0045] In an optional implementation of this embodiment, the LED chip 7 is a standard chip or a flip chip.

[0046] Specifically, in this embodiment, the LED chip 7 is a standard chip.

[0047] Furthermore, the number of LED chips 7 is three, including a red LED chip, a green LED chip, and a blue LED chip.

[0048] In one optional implementation of this embodiment, the logic state of the storage bit of the driver IC chip in the display device in row i and column j-1 is different from the logic state of the storage bit of the driver IC chip in the display device in row i and column j.

[0049] Specifically, in this embodiment, the logic state of the storage bit of the driver IC chip of the display device in the first row and first column, i.e., the first display device 21, is different from the logic state of the storage bit of the driver IC chip of the display device in the first row and second column, i.e., the second display device 22. The logic state of the storage bit of the driver IC chip of the display device in the first row and third column, i.e., the third display device 23, is different from the logic state of the storage bit of the driver IC chip of the display device in the first row and fourth column, i.e., the fourth display device 24.

[0050] More importantly, the logic states of the storage bits of the driver IC chips of two display devices within the same group are different.

[0051] Furthermore, the difference between the two display devices in the same group lies in the programming state of their internal driver IC chips. Taking the first display device 21 and the second display device 22 as examples, after the display devices are manufactured, they are tested. During the test, the address is programmed into the driver IC chip of one of the display devices. The two display devices in the same group are distinguished by the programmed and unprogrammed states. This can be understood as the logical states of the storage bits of the driver IC chips of the two display devices being different. For example, when programming the address of the second display device 22, both the first display device 21 and the second display device 22 work normally during driving. When the control signal is transmitted to the display devices in the group, since the address signals of the first display device 21 and the second display device 22 are different, they respectively intercept their own control signals and perform corresponding display work. Therefore, the connection method in which the first bidirectional control signal port, which acts as the input control signal port, and the second bidirectional control signal port, which acts as the output control signal port, are connected will not cause the two display devices in the same group to malfunction.

[0052] In an optional implementation of this embodiment, the size range of the display device is: the length range is less than or equal to 3mm, and the width range is less than or equal to 3mm.

[0053] Preferably, the length is 2.2mm and the width is 2.2mm.

[0054] In summary, Embodiment 1 of the present invention provides a display module in which the display devices arranged in an array adopt a port configuration structure with bidirectional control signal ports respectively disposed on both sides of the back of the carrier, and employ a special connection method. Two display devices in the same row form a group, with the second bidirectional control signal ports of the two display devices in the first group connected in parallel, and connected to the first bidirectional control signal ports of the two display devices in the second group connected in parallel. That is, four display devices are simultaneously connected to each other, forming a 2 The control signal transmission line of the 2-pin array enables multi-channel transmission of control signals, with multiple control signals serving as backups for each other, achieving breakpoint resume functionality. This effectively prevents the overall display effect of the display module from being affected by the failure of a single display device, thus improving display efficiency. The display device adopts a four-port pin scheme, which reduces the difficulty of the manufacturing process. Furthermore, the control signal ports on the display device are all bidirectional control signal ports, simultaneously adapting to left and right control signal transmission, achieving the effect of transmission from both sides. This bidirectional transmission of control signals reduces manufacturing costs, making it suitable for large-screen display module splicing scenarios, with stronger applicability and better display effects.

[0055] Example 2 Embodiment 2 of the present invention provides a display module, the display module including a controller and a plurality of display devices, the plurality of display devices being arranged in m rows. The array is arranged in n columns, and the controller is connected to the plurality of display devices. The display devices in adjacent columns within the same row are interconnected. Where m is a positive integer, n is a positive integer, and n is a multiple of 2, n > 3; Any of the display devices includes two or more bidirectional control signal ports, at least one bidirectional control signal port is disposed on a first side of the back surface of the carrier of the display device, and at least one bidirectional control signal port is disposed on a second side of the back surface of the carrier of the display device, wherein the first side and the second side of the back surface of the carrier are disposed opposite to each other. The bidirectional control signal port on the first side of the back of the carrier of the display device in the first column of the same row is connected to the bidirectional control signal port on the first side of the back of the carrier of the display device in the second column. The bidirectional control signal ports on the second side of the back of the carrier of the display device in the first column of the same row, the bidirectional control signal ports on the second side of the back of the carrier of the display device in the second column, the bidirectional control signal ports on the first side of the back of the carrier of the display device in the third column, and the bidirectional control signal ports on the first side of the back of the carrier of the display device in the fourth column are interconnected. The bidirectional control signal ports on the second side of the back of the carrier of the display device in the same row (j-3), the bidirectional control signal ports on the second side of the back of the carrier of the display device in the same row (j-2), the bidirectional control signal ports on the first side of the back of the carrier of the display device in the same row (j-1), and the bidirectional control signal ports on the first side of the back of the carrier of the display device in the same row (j-1) are interconnected. The bidirectional control signal port on the second side of the back of the carrier of the display device in the same row (j-1) is connected to the bidirectional control signal port on the second side of the back of the carrier of the display device in the j-th column. The controller's control signal port is connected to the bidirectional control signal port on the first side of the back of the carrier of the display device in the i-th row and 1-th column and the bidirectional control signal port on the first side of the back of the carrier of the display device in the i-th row and 2-th column. Alternatively, the control signal port of the controller can be connected to the bidirectional control signal port on the second side of the back of the carrier of the display device in the i-th row and n-th column and the bidirectional control signal port on the second side of the back of the carrier of the display device in the i-th row and n-1-th column. Where 1≤i≤m, 3<j≤n, and i and j are both positive integers.

[0056] It should be noted that the structure of the display module provided in Embodiment 2 is basically the same as that of the display module provided in Embodiment 1, except that: In an optional implementation of this embodiment, the controller 1 is located to the right of the first display device 21, the second display device 22, the third display device 23, and the fourth display device 24.

[0057] Specifically, in this embodiment, the controller 1 is located on the right side of all display devices, and the display module adopts a right-side control signal transmission method.

[0058] In one optional implementation of this embodiment, such as Figure 4 As shown, Figure 4 A schematic diagram of the display module structure connection in Embodiment 2 of the present invention is shown. In the display module, the connection method of the first display device 21, the second display device 22, the third display device 23 and the fourth display device 24 in the same row, and the controller 1 is as follows: When the controller 1 is located to the right of the first display device 21, the second display device 22, the third display device 23 and the fourth display device 24, the control signal port D of the controller 1 is connected to the second bidirectional control signal port D8 of the fourth display device 24 and the second bidirectional control signal port D6 of the third display device 23. The connection relationships between the first display device 21, the second display device 22, the third display device 23, and the fourth display device 24 are the same as those in Embodiment 1.

[0059] Specifically, the controller 1 outputs a control signal from its control signal port D, which is transmitted to the second bidirectional control signal port D8 of the fourth display device 24 and simultaneously to the second bidirectional control signal port D6 of the third display device 23. The first bidirectional control signal port D7 of the fourth display device 24 and the first bidirectional control signal port D5 of the third display device 23 simultaneously output control signals, which are then simultaneously transmitted to the second bidirectional control signal port D4 of the second display device 22 and the second bidirectional control signal port D2 of the first display device 21, forming a 2... The control signal transmission line 2 enables multiple transmission of control signals, with multiple control signals serving as backups for each other.

[0060] Furthermore, in Embodiment 1, the controller 1 of the display module is located on the left side, and in Embodiment 2, the controller 1 of the display module is located on the right side. With the connection relationship between the first display device 21, the second display device 22, the third display device 23, and the fourth display device 24 remaining unchanged, in Embodiment 1, the first bidirectional control signal port 41 of the display device of the display module acts as the input control signal port, and the second bidirectional control signal port 42 acts as the output control signal port. The control signal output by the controller 1 is transmitted from the first display device 21 to the second display device 22, the third display device 23, and the fourth display device 24 in sequence. In Embodiment 2, the second bidirectional control signal port 42 of the display device of the display module acts as the input control signal port, and the first bidirectional control signal port 41 acts as the output control signal port. The control signal output by the controller 1 is transmitted from the fourth display device 24 to the third display device 23, the second display device 22 and the first display device 21 in sequence. In this way, regardless of whether the controller 1 is on the left or right, the control signal can be transmitted normally, achieving the effect of transmission from both sides, realizing bidirectional transmission of the control signal, reducing production costs, adapting to splicing scenarios of large screen display modules, making it more applicable and providing better display effects.

[0061] In summary, Embodiment 2 of the present invention provides a display module. The display devices arranged in an array within the module employ a port configuration structure with bidirectional control signal ports respectively located on both sides of the back of the carrier. A special connection method is used, with two display devices in the same row forming a group. The second bidirectional control signal ports of the two display devices in the first group are connected in parallel and then connected to the first bidirectional control signal ports of the two display devices in the second group, which are also connected in parallel. That is, four display devices are simultaneously interconnected, forming a 2... The control signal transmission line of the 2-pin array enables multi-channel transmission of control signals, with multiple control signals serving as backups for each other, achieving breakpoint resume functionality. This effectively prevents the overall display effect of the display module from being affected by the failure of a single display device, thus improving display efficiency. The display device adopts a four-port pin scheme, which reduces the difficulty of the manufacturing process. Furthermore, the control signal ports on the display device are all bidirectional control signal ports, simultaneously adapting to left and right control signal transmission, achieving the effect of transmission from both sides. This bidirectional transmission of control signals reduces manufacturing costs, making it suitable for large-screen display module splicing scenarios, with stronger applicability and better display effects.

[0062] Example 3 Embodiment 3 of the present invention provides a combined display module, which includes a first display module and a second display module. The first display module is the display module in Embodiment 1, and the second display module is the display module in Embodiment 2. The right side of the first display module and the left side of the second display module are spliced ​​together, and the first display module and the second display module are combined to form the combined display module.

[0063] In one optional implementation of this embodiment, such as Figure 5 As shown, Figure 5 A schematic diagram of the combined display module structure in Embodiment 3 of the present invention is shown. The combined display module includes a first display module 61 and a second display module 62. The right side of the first display module 61 is spliced ​​with the left side of the second display module 62. The first display module 61 and the second display module 62 are combined and spliced ​​to form the combined display module.

[0064] Furthermore, the controller in the first display module 61 is located on the left side of all display devices in the first display module 61; The controller in the second display module 62 is located on the right side of all display devices in the second display module 62.

[0065] Specifically, in this embodiment, the combined display module is spliced ​​together by combining the first display module 61 and the second display module 62. The first display module 61 is the type from Embodiment 1, where the controller is located on the left side of the display device and the control signal is transmitted from the left. The second display module 62 is the type from Embodiment 2, where the controller is located on the right side of the display device and the control signal is transmitted from the right. Both the first display module 61 and the second display module 62 use the same structure of display device, i.e., a structure with bidirectional control signal ports, which is compatible with both left and right control signal transmission. This solves the problem that using a combined display module driven by both sides simultaneously requires two sets of complex long-distance signal lines on the carrier, making the circuit design very difficult. It also solves the problem that when using a combination of left and right display modules, the left and right display modules need to use devices with inconsistent structures, i.e., the functions of the port pins in the display devices need to be adjusted, which further increases the types of display devices and increases the manufacturing cost.

[0066] In summary, Embodiment 3 of the present invention provides a combined display module, including the display module in Embodiment 1 and the display module in Embodiment 2. The display devices arranged in an array within the display module employ a port configuration structure with bidirectional control signal ports respectively located on both sides of the back of the carrier. A special connection method is used, with two display devices in the same row forming a group. The second bidirectional control signal ports of the two display devices in the first group are connected in parallel and then connected to the first bidirectional control signal ports of the two display devices in the second group, which are also connected in parallel. That is, four display devices are simultaneously connected to each other, forming a 2... The control signal transmission line of the 2-pin array enables multi-channel transmission of control signals, with multiple control signals serving as backups for each other, achieving breakpoint resume functionality. This effectively prevents the overall display effect of the display module from being affected by the failure of a single display device, thus improving display efficiency. The display device adopts a four-port pin scheme, which reduces the difficulty of the manufacturing process. Furthermore, the control signal ports on the display device are all bidirectional control signal ports, simultaneously adapting to left and right control signal transmission, achieving the effect of transmission from both sides. This bidirectional transmission of control signals reduces manufacturing costs, making it suitable for large-screen display module splicing scenarios, with stronger applicability and better display effects.

[0067] The above provides a detailed description of a display module and a combined display module provided by the present invention. Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, which may include: read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.

[0068] Furthermore, the embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A display module, characterized in that, The display module comprises a controller and a plurality of display devices arranged in m rows n columns, the controller being connected to the plurality of display devices, and display devices in the same row and adjacent columns being connected to each other. Where m is a positive integer, n is a positive integer, and n is a multiple of 2, n > 3; Any of the display devices includes two or more bidirectional control signal ports, at least one bidirectional control signal port is disposed on a first side of the back surface of the carrier of the display device, and at least one bidirectional control signal port is disposed on a second side of the back surface of the carrier of the display device, wherein the first side and the second side of the back surface of the carrier are disposed opposite to each other. The bidirectional control signal port on the first side of the back of the carrier of the display device in the first column of the same row is connected to the bidirectional control signal port on the first side of the back of the carrier of the display device in the second column. The bidirectional control signal ports on the second side of the back of the carrier of the display device in the first column of the same row, the bidirectional control signal ports on the second side of the back of the carrier of the display device in the second column, the bidirectional control signal ports on the first side of the back of the carrier of the display device in the third column, and the bidirectional control signal ports on the first side of the back of the carrier of the display device in the fourth column are interconnected. The bidirectional control signal ports on the second side of the back of the carrier of the display device in the same row (j-3), the bidirectional control signal ports on the second side of the back of the carrier of the display device in the same row (j-2), the bidirectional control signal ports on the first side of the back of the carrier of the display device in the same row (j-1), and the bidirectional control signal ports on the first side of the back of the carrier of the display device in the same row (j-1) are interconnected. The bidirectional control signal port on the second side of the back of the carrier of the display device in the same row (j-1) is connected to the bidirectional control signal port on the second side of the back of the carrier of the display device in the j-th column. The controller's control signal port is connected to the bidirectional control signal port on the first side of the back of the carrier of the display device in the i-th row and 1-th column and the bidirectional control signal port on the first side of the back of the carrier of the display device in the i-th row and 2-th column. Alternatively, the control signal port of the controller can be connected to the bidirectional control signal port on the second side of the back of the carrier of the display device in the i-th row and n-th column and the bidirectional control signal port on the second side of the back of the carrier of the display device in the i-th row and n-1-th column. Where 1≤i≤m, 3<j≤n, and i and j are both positive integers.

2. The display module as described in claim 1, characterized in that, The display device includes a first bidirectional control signal port and a second bidirectional control signal port, wherein the first bidirectional control signal port is disposed on a first side of the back surface of the carrier of the display device, and the second bidirectional control signal port is disposed on a second side of the back surface of the carrier of the display device. The first bidirectional control signal port on the first side of the back of the carrier of the display device in the first column of the same row is connected to the first bidirectional control signal port on the first side of the back of the carrier of the display device in the second column. The second bidirectional control signal port on the second side of the back of the carrier of the display device in the first column of the same row, the second bidirectional control signal port on the second side of the back of the carrier of the display device in the second column, the first bidirectional control signal port on the first side of the back of the carrier of the display device in the third column, and the first bidirectional control signal port on the first side of the back of the carrier of the display device in the fourth column are interconnected. The second bidirectional control signal port on the second side of the back of the carrier of the display device in the same row (j-3), the second bidirectional control signal port on the second side of the back of the carrier of the display device in the same row (j-2), the first bidirectional control signal port on the first side of the back of the carrier of the display device in the same row (j-1), and the first bidirectional control signal port on the first side of the back of the carrier of the display device in the same row (j-1) are interconnected. The second bidirectional control signal port on the second side of the back of the carrier of the display device in the same row (j-1) is connected to the second bidirectional control signal port on the second side of the back of the carrier of the display device in column j.

3. The display module as described in claim 2, characterized in that, The controller is located on the left side of the plurality of display devices, and the control signal port of the controller is connected to the first bidirectional control signal port on the first side of the back of the carrier of the display device in the i-th row and the 1-th column and the first bidirectional control signal port on the first side of the back of the carrier of the display device in the i-th row and the 2-th column.

4. The display module as described in claim 2, characterized in that, The controller is located on the right side of the plurality of display devices, and the control signal port of the controller is connected to the second bidirectional control signal port on the second side of the back of the carrier of the display device in the i-th row and n-th column and the second bidirectional control signal port on the second side of the back of the carrier of the display device in the i-th row and n-1-th column.

5. The display module as described in claim 1, characterized in that, The display device further includes bidirectional control signal pads, which are disposed on the front side of the carrier of the display device. The number of bidirectional control signal pads is the same as the number of bidirectional control signal ports, and the bidirectional control signal pads are electrically connected to the bidirectional control signal ports one-to-one.

6. The display module as described in claim 1, characterized in that, The display device further includes a power port and a ground port, which are disposed on the back of the carrier of the display device. The power ports of the display devices in the same row are connected in series and electrically connected to the power control port of the controller. The ground port of the display device is grounded. The display device further includes a power pad and a ground pad, which are disposed on the front side of the carrier of the display device. The power pad is electrically connected to the power port, and the ground pad is electrically connected to the ground port.

7. The display module as described in claim 1, characterized in that, The display device's carrier also has a driver IC chip and an LED chip on its front side. The driver IC chip is electrically connected to the bidirectional control signal pad, the power pad, and the ground pad, and the LED chip is electrically connected to the driver IC chip and the power pad.

8. The display module as described in claim 7, characterized in that, The logic state of the storage bit of the driver IC chip in the display device in row i and column j-1 is different from the logic state of the storage bit of the driver IC chip in the display device in row i and column j.

9. A combined display module, characterized in that, The combined display module includes a first display module and a second display module. The first display module is the display module according to any one of claims 1-8, and the second display module is the display module according to any one of claims 1-8. The right side of the first display module is spliced ​​with the left side of the second display module, and the first display module and the second display module are combined to form the combined display module.

10. The combined display module as described in claim 9, characterized in that, The controller in the first display module is located on the left side of all display devices in the first display module; The controller in the second display module is located on the right side of all display devices in the second display module.

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