Display module and display device

Abstract

The invention provides a display module and a display device, and relates to the technical field of display, the display module comprises a bearing carrier plate, a display panel, an electric visbreaking layer, a first electrode and a second electrode, the display panel is arranged on the surface of one side of the bearing carrier plate; the electric visbreaking layer is located between the bearing carrier plate and the display panel; in the thickness direction of the display module, the first electrode and the second electrode are located on the two sides of the electric visbreaking layer respectively, and the first electrode, the second electrode and the electric visbreaking layer are overlapped. According to the display module provided by the embodiment of the invention, a controlled electrical sandwich structure is constructed, and a traditional static bonding process is converted into a dynamic controllable connection process. According to the display panel and the display device, under the condition that relevant voltage is applied to the first electrode and the second electrode to form a voltage difference, the viscosity of the electric visbreaking layer can be reduced, panel breakage or carrier plate scratching possibly caused by mechanical disassembly is avoided, and independent and lossless rework of the display panel is achieved.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a display module and display device. Background Technology

[0002] In recent years, video wall display technology has been widely used in commercial displays, digital shop windows, and automotive displays. Current video wall display devices typically consist of multiple display units bonded together on a large transparent video wall carrier using an adhesive layer.

[0003] In existing technologies, splicing display products primarily use a single layer of optical adhesive or resin to bond multiple display panels together. However, this bonding method has significant limitations: once cured, the adhesive becomes extremely sticky, resulting in a lack of reworkability for the display panels during production, installation, or subsequent maintenance. When one display panel malfunctions and needs replacement, the use of optical adhesive or resin can cause panel breakage or scratches to the carrier board during removal. Summary of the Invention

[0004] To address the aforementioned technical issues, this disclosure provides a display module and display device, aiming to enable independent and non-destructive rework of the display panel.

[0005] In a first aspect, this disclosure provides a display module, including a carrier plate, a display panel, an electro-adhesive layer, a first electrode, and a second electrode, wherein the display panel is disposed on one side surface of the carrier plate; the electro-adhesive layer is located between the carrier plate and the display panel; along the thickness direction of the display module, the first electrode and the second electrode are respectively located on both sides of the electro-adhesive layer, and the first electrode, the second electrode, and the electro-adhesive layer overlap.

[0006] Optionally, the display panel includes a first electrode layer, with the first electrode located on the first electrode layer; and a second electrode located between the electro-adhesive layer and the carrier plate.

[0007] Optionally, the first electrode is located between the display panel and the electro-adhesive layer, and the second electrode is located between the electro-adhesive layer and the carrier plate.

[0008] Optionally, the display module includes at least two display panels and at least two first electrodes, wherein the first electrodes are disposed corresponding to the display panels and the different first electrodes are insulated from each other.

[0009] Optionally, different display panels may correspond to the same second electrode.

[0010] Optionally, different display panels correspond to different second electrodes, and the different second electrodes are electrically connected; or, the different second electrodes are insulated from each other.

[0011] Optionally, the display panel includes a first state and a second state. In the first state, the first electrode and the second electrode are configured to receive the same electrical signal, or the first electrode and the second electrode are configured to float. In the second state, the first electrode and the second electrode are configured to receive different electrical signals.

[0012] Optionally, in the first state, when the first electrode and the second electrode are configured to receive the same electrical signal, the electrical signal is a ground signal.

[0013] Optionally, in the second state, the first electrode is configured to receive a first voltage signal, the second electrode is configured to receive a second voltage signal, and the voltage difference between the first voltage signal and the second voltage signal is greater than or equal to a preset value.

[0014] Optionally, one of the first voltage signal and the second voltage signal is a positive voltage signal, and the other is a negative voltage signal.

[0015] Optionally, the first electrode includes a first main body portion and a first extension portion connected to the first main body portion. Along the thickness direction of the display module, the first main body portion overlaps with the electro-adhesive layer, while the first extension portion does not overlap with the electro-adhesive layer. The first electrode is configured to acquire signals through the first extension portion.

[0016] Optionally, the second electrode includes a second main body and a second extension connected to the second main body. Along the thickness direction of the display module, the second main body overlaps with the electro-adhesive layer, while the second extension does not overlap with the electro-adhesive layer. The second electrode is configured to acquire signals through the second extension.

[0017] Optionally, the first extension and the second extension are located on different sides of the electro-adhesive layer along a direction parallel to the light-emitting surface of the display module.

[0018] Optionally, the first extension and the second extension have different shapes; and / or, the first extension and the second extension have different areas.

[0019] Optionally, the surface of the carrier plate facing the display panel includes a first signal terminal and a second signal terminal. The first signal terminal is disposed corresponding to the first electrode. The first signal terminal is electrically connected to the first electrode through a connecting part, and the second signal terminal is electrically connected to the second electrode. The first electrode obtains an electrical signal through the first signal terminal, and the second electrode obtains an electrical signal through the second signal terminal.

[0020] Optionally, the connecting portion includes a first connecting portion and a second connecting portion, wherein the first connecting portion is disposed in the same layer as the second electrode, and the second connecting portion is located between the first connecting portion and the first electrode.

[0021] Optionally, along a direction parallel to the light-emitting surface of the display module, at least two first signal terminals are located on the same side of the electro-adhesive.

[0022] Optionally, the first signal terminal located on the same side as the electro-tack reduction layer is electrically connected to the control module, and the control module obtains the electrical signal.

[0023] Optionally, the display panel includes a bonding area, which includes multiple bonding pads; along a direction parallel to the light-emitting surface of the display module, the first signal terminal and the bonding area are located on the same side of the electro-adhesive layer, or the first signal terminal and the bonding area are located on opposite sides of the electro-adhesive layer.

[0024] Optionally, along a direction parallel to the light-emitting surface of the display module, at least a portion of the first signal terminal and at least one second signal terminal are located on the same side of the electro-adhesion layer; on the same side of the electro-adhesion layer, the first signal terminal and the second signal terminal are arranged along a first direction, and along the first direction, the second signal terminal is located on the side of the first signal terminal near the edge of the display module.

[0025] Optionally, the second signal terminal is electrically connected to the second electrode through a third connecting portion. Along the second direction, the third connecting portion is located between the second electrode and the second signal terminal. The second direction is parallel to the light-emitting surface of the display module and intersects with the first direction. Along the first direction, a plurality of first connecting portions are located between two third connecting portions.

[0026] Optionally, the second signal terminal, the third connection portion, and the second electrode are disposed in the same layer.

[0027] Optionally, the first connecting part and the second electrode are disposed in the same layer.

[0028] Optionally, the same first electrode is electrically connected to at least two first signal terminals, and along a direction parallel to the light-emitting surface of the display module, the at least two first signal terminals electrically connected to the same first electrode are located on opposite sides of the electro-adhesive layer.

[0029] Optionally, the same second electrode is electrically connected to at least two second signal terminals, and along a direction parallel to the light-emitting surface of the display module, the at least two second signal terminals electrically connected to the same second electrode are respectively located on opposite sides of the electro-adhesive layer.

[0030] Optionally, the display module includes a first display panel and a second display panel, the area of ​​the first display panel is larger than the area of ​​the second display panel, the area of ​​the electro-adhesive layer corresponding to the first display panel is larger than the area of ​​the electro-adhesive layer corresponding to the second display panel, and the number of first signal terminals electrically connected to the first electrode corresponding to the first display panel is greater than the number of first signal terminals electrically connected to the first electrode corresponding to the second display panel.

[0031] Optionally, the display module includes a first display panel and a second display panel, wherein the area of ​​the first display panel is larger than the area of ​​the second display panel, the area of ​​the electro-adhesive layer corresponding to the first display panel is larger than the area of ​​the electro-adhesive layer corresponding to the second display panel, and the area of ​​the first signal terminal electrically connected to the first electrode corresponding to the first display panel is larger than the area of ​​the first signal terminal electrically connected to the first electrode corresponding to the second display panel.

[0032] Optionally, the display module includes a first display panel and a second display panel, the area of ​​the first display panel is different from that of the second display panel, the first display panel and the second display panel correspond to different second electrodes, and the different second electrodes are insulated from each other.

[0033] Optionally, the display panel includes a first area and a second area, with the second area surrounding the first area; the electro-adhesive layer includes a first electro-adhesive portion, which overlaps with the second area but does not overlap with the first area along the thickness direction of the display module.

[0034] Optionally, along the thickness direction of the display module, the first electrode covers the first electro-adhesive portion.

[0035] Optionally, the electro-adhesive layer further includes a second electro-adhesive portion, which overlaps with a portion of the first region along the thickness direction of the display module, and the first electrode covers the second electro-adhesive portion.

[0036] Optionally, the outer contour shape of the second area is adapted to the outer contour shape of the display panel.

[0037] Optionally, the first electro-adhesive portion overlapping the second region is a continuous structure, or the first electro-adhesive portion overlapping the second region includes multiple electro-adhesive sub-parts, which are spaced apart.

[0038] Optionally, the carrier plate has a planar structure; or, the carrier plate includes a planar portion and a protrusion, the protrusion is disposed around the planar portion and is located on the side surface of the planar portion on which the display panel is disposed; the display panel and the electro-adhesive layer are located in the space formed by the planar portion and the protrusion.

[0039] In a second aspect, this disclosure provides a display device, including the display panel provided in the first aspect.

[0040] The technical solution provided in this disclosure has the following advantages compared with the prior art: The display module provided in this disclosure constructs a controlled electrical sandwich structure, transforming the traditional static bonding process into a dynamically controllable connection process. Specifically, an electro-adhesive layer is introduced into the display module, with a first electrode and a second electrode disposed on both sides of the electro-adhesive layer. When no voltage difference is formed between the first and second electrodes, the electro-adhesive layer possesses sufficient shear strength to ensure a firm bond between the display panel and the carrier plate, meeting the structural reliability requirements for daily use. When a voltage is applied to the first and second electrodes to create a voltage difference, the adhesiveness of the electro-adhesive layer decreases. Actual testing shows that, under energized conditions, the adhesiveness of the electro-adhesive layer can decrease by 70% or more. Compared to traditional methods using strong adhesives such as optical glue or optical resin, the embodiments of this disclosure allow the display panel to be easily peeled off under specific conditions, avoiding panel breakage or carrier plate scratches that may occur during mechanical disassembly. Moreover, the de-adhesion process is more controllable. The de-adhesion process only occurs when the first electrode and the second electrode are energized to form a voltage difference, which enables independent and non-destructive rework of the display panel. Furthermore, the degree and time of de-adhesion can be manually and dynamically intervened by adjusting the voltage difference, thereby making the maintenance process more controllable. Attached Figure Description

[0041] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0042] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 The figure shown is a plan view of a display module provided in an embodiment of this disclosure; Figure 2 As shown Figure 1 A cross-sectional view of the display module along the AA direction; Figure 3 As shown Figure 1 Another AA-axis cross-sectional view of the display module; Figure 4 The figure shown is a plan view of a display module provided in an embodiment of this disclosure; Figure 5 As shown Figure 4 A BB-direction cross-sectional view of the display module; Figure 6 The figure shown is a planar schematic diagram of a second electrode on a carrier plate in a display module provided in an embodiment of this disclosure; Figure 7The figure shown is another planar schematic diagram of the second electrode on the carrier plate in the display module provided in the embodiment of this disclosure; Figure 8 As shown Figure 4 Another BB-direction cross-sectional view of the display module; Figure 9 As shown Figure 4 A C-axis cross-sectional view of the display module; Figure 10 The image shows a planar schematic diagram of the first electrode corresponding to a display panel in a display module; Figure 11 The image shows a planar schematic diagram of the second electrode in a display module; Figure 12 The image shown is another planar schematic diagram of the first electrode in the display module; Figure 13 The image shown is another planar schematic diagram of the second electrode in the display module; Figure 14 The figure shown is a planar schematic diagram of the second electrode and the electro-reducing adhesive layer in a display module provided in an embodiment of this disclosure; Figure 15 As shown Figure 14 A DD-direction cross-sectional view of the display module; Figure 16 The diagram shown is a schematic representation of a connection between the first signal terminal and the second signal terminal and the flexible circuit board provided in an embodiment of this disclosure. Figure 17 The diagram shown is a schematic representation of the connection between the flexible circuit board for display and the display panel in a display module provided in this embodiment of the present disclosure. Figure 18 The diagram shown illustrates another connection between the flexible circuit board for display and the display panel in the display module provided in this embodiment of the present disclosure. Figure 19 The figure shown is another planar schematic diagram of the display module provided in the embodiment of this disclosure; Figure 20 The figure shown is another planar schematic diagram of the display module provided in the embodiment of this disclosure; Figure 21 The figure shown is another planar schematic diagram of the display module provided in the embodiment of this disclosure; Figure 22 The figure shown is another planar schematic diagram of the display module provided in the embodiment of this disclosure; Figure 23 The figure shown is another planar schematic diagram of the display module provided in the embodiment of this disclosure; Figure 24 The figure shown is another planar schematic diagram of the display module provided in the embodiment of this disclosure; Figure 25 The figure shown is another planar schematic diagram of the display module provided in the embodiment of this disclosure; Figure 26 The diagram shows a relative positional relationship between the electro-adhesive layer and the first electrode. Figure 27 The diagram shows another relative positional relationship between the electro-adhesive layer and the first electrode. Figure 28 The figure shown is another planar schematic diagram of the display module provided in the embodiment of this disclosure; Figure 29 The figure shown is another planar schematic diagram of the display module provided in the embodiment of this disclosure; Figure 30 The figure shown is another planar schematic diagram of the display module provided in the embodiment of this disclosure; Figure 31 The figure shown is another planar schematic diagram of the display module provided in the embodiment of this disclosure; Figure 32 As shown Figure 4 Another BB-direction cross-sectional view of the display panel; Figure 33 The diagram shown is a structural schematic of a display device provided in an embodiment of this disclosure; Figure 34 The diagram shown is another structural schematic of the display device provided in an embodiment of this disclosure. Detailed Implementation

[0044] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0045] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0046] Figure 1 The diagram shown is a planar schematic of a display module provided in an embodiment of this disclosure. The display module includes a plurality of light-emitting units D. Figure 2 As shown Figure 1 The image shows a cross-sectional view of the display module along the AA direction. It should be noted that... Figure 1 The shape of the display module is illustrated using only a rectangular structure as an example, but it is not limited to this. In other embodiments of this disclosure, the display module may also be a non-rectangular irregular structure. Figure 1The number, shape, and arrangement of the light-emitting units shown are for illustrative purposes only, and this disclosure is not intended to limit them. Optionally, the display module includes light-emitting units that emit red, green, and blue light.

[0047] Please refer to Figure 1 and Figure 2 This disclosure provides a display module 100, including a carrier plate 00, a display panel 10, an electro-adhesive layer 20, a first electrode 30, and a second electrode 40. The display panel 10 is disposed on one side surface of the carrier plate 00; the electro-adhesive layer 20 is located between the carrier plate 00 and the display panel 10; along the thickness direction of the display module, the first electrode 30 and the second electrode 40 are respectively located on both sides of the electro-adhesive layer 20, and the first electrode 30, the second electrode 40, and the electro-adhesive layer 20 overlap. The carrier plate 00 is, for example, glass or a transparent substrate.

[0048] The display module provided in this embodiment constructs a controlled electrical sandwich structure, transforming the traditional static bonding process into a dynamically controllable connection process. Specifically, a display panel 10 is disposed on one side of a carrier plate 00, and an electro-adhesive layer 20 is sandwiched between the carrier plate 00 and the display panel 10. The electro-adhesive layer 20 is in the form of a pure adhesive film. A first electrode 30 and a second electrode 40 are respectively located on both sides of the electro-adhesive layer 20, and the first electrode 30, the electro-adhesive layer 20, and the second electrode 40 overlap in the thickness direction of the display module.

[0049] This embodiment introduces an electro-adhesive layer 20 into the display module. When no voltage difference is formed between the first electrode 30 and the second electrode 40, the electro-adhesive layer 20 possesses sufficient shear strength to ensure a firm bond between the display panel 10 and the carrier plate, meeting the structural reliability requirements for daily use. When a voltage difference is formed by applying a relevant voltage to the first electrode 30 and the second electrode 40, the adhesiveness of the electro-adhesive layer 20 decreases. Actual testing shows that the adhesiveness of the electro-adhesive layer 20 can decrease by 70% or more under energized conditions. Compared to traditional methods using strong adhesives such as optical glue or optical resin, this embodiment allows the display panel 10 to be easily peeled off under specific conditions, avoiding panel breakage or carrier plate scratches that may occur during mechanical disassembly. Furthermore, the de-adhesion process is more controllable, occurring only when an energized voltage difference is formed between the first electrode 30 and the second electrode 40. The degree and time of de-adhesion can be dynamically intervened by adjusting the voltage difference, making the maintenance process more controllable.

[0050] When the structure of this embodiment is applied to a splicing display product, the electro-adhesive layer 20 corresponding to different display panels 10 can be independently controlled by the first electrode 30 and the second electrode 40. In actual application, only the faulty panel can be de-adhesive and removed, while the adjacent normal panels remain in a non-de-adhesive state. This completely solves the problem of damaging adjacent display panels 10 or the carrier board in the traditional method of using optical glue or optical resin for bonding, and realizes independent and non-destructive rework of different display panels 10 in the splicing product.

[0051] It should be noted that the embodiments disclosed herein do not limit the type of display panel 10 included in the display module. The display panel 10 may be any form of display panel, such as a liquid crystal display panel, an organic light-emitting display panel, or an inorganic light-emitting display panel.

[0052] Figure 3 As shown Figure 1 Another AA-direction cross-sectional view of the display module is shown. In an optional embodiment of this disclosure, the display panel 10 includes a first electrode layer 11, with a first electrode 30 located on the first electrode layer 11; a second electrode 40 is located between the electro-adhesive layer 20 and the carrier plate 00. In this embodiment, the first electrode 30 reuses the film layer structure (first electrode layer 11) on the display panel 10 and is integrated on the back side of the display panel 10. This eliminates the need to introduce additional thick metal layers or complex mechanical fasteners into the display module, which helps to reduce the overall thickness of the display module.

[0053] Since the first electrode 30 is integrated on the back of the display panel 10, power-on control can be applied to a specific display panel 10. This allows for independent, controllable, and efficient de-adhesion treatment of each display panel 10 during display module maintenance without interfering with other display panels 10, thereby improving the success rate of rework.

[0054] When the first electrode 30 reuses the first electrode layer 11 on the display panel 10, if the display module is a transparent display structure, the first electrode layer 11 can be made of a high-transmittance conductive material such as ITO or graphene. If the display module is a non-transparent display structure, the first electrode 30 can also be made of a metal material with good conductivity. The second electrode 40 is located between the carrier plate 00 and the display panel 10, and the second electrode 40 can be formed on the carrier plate 00 by means of a coating.

[0055] The above embodiments illustrate a scheme where the first electrode 30 reuses the film layer structure in the display module, but this disclosure is not limited thereto. For example, in some other embodiments, the first electrode 30 may be independent of the display panel 10. For example, please refer to... Figure 2In one optional embodiment of this disclosure, the first electrode 30 is located between the display panel 10 and the electro-adhesive layer 20, and the second electrode 40 is located between the electro-adhesive layer 20 and the carrier plate 00.

[0056] In this embodiment, since the first electrode 30 does not reuse the internal circuitry of the panel, the voltage signal required for electro-adhesion reduction is physically completely isolated from the display signal. This avoids potential electrical performance damage to the display pixels or display driver chip caused by the voltage signal applied during the adhesion reduction process. Moreover, the first electrode 30 adopts an independent electrode layer, which can be optimized according to the characteristics of the adhesion reduction material (e.g., optimization of the coverage area of ​​the electro-adhesion reduction layer 20), ensuring a more uniform electric field distribution and thus achieving a more efficient adhesion reduction effect.

[0057] Figure 4 The figure shown is a plan view of a display module provided in an embodiment of this disclosure. Figure 5 As shown Figure 4 Please refer to the BB-direction cross-sectional view of the display module. Figure 4 and Figure 5 In one optional embodiment of this disclosure, the display module includes at least two display panels 10 and at least two first electrodes 30. The first electrodes 30 are correspondingly disposed with respect to the display panels 10, and different first electrodes 30 are mutually insulated, that is, the first electrodes 30 corresponding to different display panels 10 are physically and electrically completely disconnected and mutually insulated. This embodiment is described using a display module including three display panels 10 and three first electrodes 30 as an example, but it is not limited thereto.

[0058] Since the first electrodes 30 corresponding to different display panels 10 are mutually insulated, when a display panel 10 needs repair or replacement, the system only needs to apply voltage to the first electrode 30 corresponding to that display panel 10, while the first electrodes 30 of other display panels 10 remain open or are subjected to non-adhesion-reducing voltage. This solves the problem that traditional adhesion-reducing schemes cannot reliably reduce adhesion for a single display panel 10, and effectively avoids displacement or damage to adjacent normal display panels 10 due to simultaneous decrease in adhesion during rework.

[0059] In this embodiment, since the first electrodes 30 are independent of each other, the voltage difference applied to each can be adjusted independently according to the specific size or position of each panel, thereby precisely controlling the de-adhesion speed of each panel and ensuring a smooth and efficient disassembly process.

[0060] In practical applications, the first electrode layer 11 can be made of highly transparent materials such as ITO or graphene. Therefore, when the display module is a transparent display module, even if the first electrode layer 11 is independent, the display module will not have a visual gap due to the transparency of the first electrode layer 11. In the absence of power or when there is no pressure difference between the first electrode 30 and the second electrode 40, each independent first electrode 30 can still maintain a high-strength mechanical connection with the electro-adhesive layer 20, which helps to ensure the reliability of the overall structure of the display module.

[0061] Please continue to refer to this. Figure 5 When each display panel 10 corresponds to a different first electrode 30, in an optional embodiment of this disclosure, different display panels 10 correspond to the same second electrode 40, and the second electrode 40 can serve as a common electrode. In this case, the second electrode 40 can serve as a complete conductive layer covering the surface of the carrier plate 00.

[0062] When the second electrode 40 is shared, it is not necessary to lay complex conductive traces for each display panel 10 separately on the carrier plate 00 side; only a single or large-area common conductive layer needs to be prepared. This reduces the precision requirements for electrode patterning on the carrier plate side and lowers the production defect rate due to conductive layer breakage or short circuits. The second electrode 40, as a common electrode, can provide a stable reference potential. Combined with the targeted energization of the first electrode 30, it can ensure that the electric field lines pass perpendicularly through the electro-adhesive layer, making the anti-adhesion effect more uniform and greatly facilitating rework operations.

[0063] Since the first electrode 30 of each display panel 10 is independent, by applying a voltage difference between the first electrode 30 corresponding to a specific display panel 10 and the common second electrode 40, the electro-adhesive layer 20 can be de-adhesive only in that area of ​​the display panel 10. During localized repairs, although the common electrode runs through the entire area, the areas of the display panel 10 where no corresponding voltage is applied to the first electrode 30 will not experience an de-adhesive reaction, thus ensuring that adjacent normal display panels remain firmly attached to the carrier.

[0064] When different display panels 10 correspond to the same second electrode 40, the second electrode 40 is set as a whole surface structure. The whole surface second electrode 40 avoids the visual texture caused by electrode gaps, and ensures that the splicing module has excellent transparency and light path consistency in the display state.

[0065] The above embodiments illustrate the scheme of different display panels 10 corresponding to the same second electrode 40, but this disclosure is not limited thereto. In an optional embodiment of this disclosure, different display panels 10 may also correspond to different second electrodes 40, for example, please refer to Figures 6 to 8 ,in, Figure 6In the illustrated embodiment, different second electrodes 40 are electrically connected; or, Figure 7 In the illustrated embodiment, the different second electrodes 40 are insulated from each other. Figure 6 The figure shown is a plan view of the second electrode 40 on the carrier plate 00 in the display module provided in this embodiment of the present disclosure. Figure 7 The diagram shown is another planar schematic of the second electrode 40 on the carrier plate 00 in the display module provided in this embodiment of the present disclosure. Figure 8 As shown Figure 4 Another BB-direction cross-sectional view of the display module is shown in the image.

[0066] Please refer to Figure 6 and Figure 8 When different display panels 10 correspond to different second electrodes 40, and the different second electrodes 40 are electrically connected, on the carrier plate 00 side, independent block-shaped second electrodes 40 (rather than a continuous electrode across an entire surface) are respectively set at the position corresponding to each display panel 10. These dispersed second electrode blocks 40 are electrically connected through wires, traces, or external connectors to form a common potential. Since the electrode layer on the carrier plate side is physically cut into multiple small blocks, the internal stress generated by large-area coatings (such as a whole surface of ITO) under thermal shock can be effectively alleviated, improving the structural reliability of large-size splicing carrier plates. Although electrically connected, the physical segmentation allows gaps to be left between the electrode blocks. In the electrically connected state, this scheme retains the characteristic of the second electrode 40 as a common electrode, requiring only one access point to provide a reference potential for all panels, simplifying the design of the driving circuit.

[0067] Please refer to Figure 7 and Figure 8When different display panels 10 correspond to different second electrodes 40, and the different second electrodes 40 are mutually insulated, each display panel 10 not only has an independent first electrode 30, but its corresponding carrier-side second electrode 40 is also completely independent and electrically insulated. Each splicing unit forms a completely independent closed electrical circuit (independent first electrode 30 and independent second electrode 40). Since the second electrodes 40 are also mutually insulated, false triggering or leakage current caused by common terminal coupling is completely eliminated. Even in complex large systems, it can be ensured that the power-on de-adhesion action is 100% confined to the target panel area. This design allows for the application of completely different voltage parameters to different areas of the module. For example, for panels at the edge and center of the carrier, line voltage drop can be compensated by setting different reference voltages for the second electrodes 40 in different areas, achieving consistency in the de-adhesion speed of the entire screen. If a manufacturing defect (such as a short circuit or breakdown) occurs in a certain second electrode 40 layer, the fault will be locked within the current single display unit and will not spread through the common circuit to affect other panels of the entire display module, greatly improving the production yield of large splicing products. This solution can support differentiated operations on multiple different panels simultaneously (such as displaying some panels normally while reducing adhesion on others), providing the highest degree of freedom in system control.

[0068] Please refer to Figure 5 and Figure 8 In one optional embodiment of this disclosure, the display panel 10 includes a first state and a second state. In the first state, the first electrode 30 and the second electrode 40 are configured to receive the same electrical signal, or the first electrode 30 and the second electrode 40 are configured to float. In the second state, the first electrode 30 and the second electrode 40 are configured to receive different electrical signals.

[0069] The first state mentioned in this disclosure is, for example, a stable holding state, in which the display panel 10 needs to be fixed to the carrier plate 00 by the electro-adhesive layer 20. To achieve the first state, the first electrode 30 and the second electrode 40 are configured to have no voltage difference. Specifically, this is achieved by both receiving the same electrical signal, or both being suspended, i.e., not receiving any electrical signal. The anti-adhesive properties of the electro-adhesive layer material are typically driven by an electrochemical reaction excited by an electric field. When there is no voltage difference between the two electrodes or they are in a suspended state, no electric field is generated inside the electro-adhesive layer 20, and the adhesive maintains its initial high tack state. During normal display or transportation of the display module, this configuration ensures the mechanical strength between the display panel 10 and the carrier plate 00. Experiments have verified that in this state, the shear strength can reach 0.9MPa~1.1MPa, which is sufficient to withstand environmental vibration and daily use forces. When the first electrode 30 and the second electrode 40 receive the same electrical signal, accidental anti-adhesion due to circuit board noise or static electricity accumulation can be effectively avoided, improving the environmental adaptability of the product.

[0070] The second state mentioned in this disclosure, for example, is a de-adhesion rework state, which can be used for maintenance or disassembly of the display panel 10. In this state, the first electrode 30 and the second electrode 40 are configured to receive different electrical signals, thereby creating a controlled voltage difference between the two electrodes. An electric field acts on the electro-de-adhesion layer 20, inducing electrochemical reactions at its interface (such as ion migration or changes in interfacial impedance), causing a rapid decrease in adhesion between the adhesive layer and the electrode interface. Experimental data show that adhesion can be reduced by 70% or more in this state. Operators can easily remove the display panel 10 from the carrier without causing physical damage to the expensive display panel or carrier. The de-adhesion speed can be manually controlled by changing the voltage difference between the first electrode 30 and the second electrode 40. The greater the voltage difference, the shorter the time required for de-adhesion, thereby improving rework efficiency on the production line.

[0071] This solution completely decouples the "adhesion" and "anti-adhesion" functions in the time dimension. The display module only enters the second state during specific periods requiring rework, remaining in the first state at other times, thus balancing product durability and maintainability. Since anti-adhesion occurs only momentarily in the second state, the first state (equipotential or floating) consumes no electrical energy and does not cause electrical interference to the driving circuit of the display panel 10. This control logic is independent of specific display technologies; whether it is a liquid crystal display panel, an organic light-emitting display panel, or an inorganic light-emitting display panel, as long as it has the corresponding first electrode 30 and second electrode 40, this logic can be used to achieve intelligent disassembly.

[0072] In practical applications, the first electrode 30 and the second electrode 40 can be electrically connected in the first state to achieve equipotential between them.

[0073] Please continue to refer to this. Figure 5 and Figure 8 In one optional embodiment of this disclosure, in a first state, when the first electrode 30 and the second electrode 40 are configured to receive the same electrical signal, the electrical signal is a ground signal.

[0074] During normal display or storage of the display module, the control circuit (such as an external drive circuit) simultaneously connects the first electrode 30 and the second electrode 40 located on both sides of the electro-adhesive layer 20 to the system's reference ground. At this time, the potential difference between the two electrodes is 0V. Considering that the electro-adhesive layer 20 is extremely sensitive to electric fields, in practical application environments, accumulated static electricity or parasitic charges on the circuit board may cause a small voltage difference between the electrodes. By forcibly grounding, all residual charges can be neutralized, ensuring that the electric field strength inside the electro-adhesive layer 20 is zero. In this state, the molecular chain structure of the electro-adhesive remains stable, and no electrochemical reaction occurs. The module can exert its initial maximum adhesive strength, ensuring that the display panel 10 will not shift or detach under conditions such as vibration and impact.

[0075] When both conductive layers (first electrode 30 and second electrode 40) are grounded, they form a double-layer electrostatic shielding structure to a certain extent. This helps protect the electrostatic de-adhesion layer 20 and the sensitive circuitry inside the display panel 10 from external electromagnetic interference. The grounding signal is an extremely stable reference signal. Compared to the "floating" state (where the electrodes may induce a floating potential), grounding ensures 100% that the de-adhesion logic will not be accidentally triggered due to circuit jitter, surges, or induced current, avoiding the risk of misoperation during production and maintenance.

[0076] Furthermore, in large display systems such as video wall displays, all electrodes of the display panels 10 are grounded uniformly, which simplifies the logic design of the controller. When it is necessary to switch from "use state" to "re-operation state," only one electrode needs to be switched from the ground terminal to the high / low level signal terminal. The grounded state does not require continuous power supply, which is beneficial for achieving the low power consumption design requirements of the display module.

[0077] Furthermore, considering that the transparent conductive layer (first electrode 30 or second electrode 40) may undergo slow electrochemical corrosion or ion migration under long-term exposure to minute pressure differences, grounding the first electrode 30 and the second electrode 40 ensures that there is no ion flow at the interface, greatly extending the service life of the first electrode 30, the second electrode 40, and the electro-adhesive reducing material.

[0078] Please continue to refer to this. Figure 5 and Figure 8 In one optional embodiment of this disclosure, in the second state, the first electrode 30 is configured to receive a first voltage signal, the second electrode 40 is configured to receive a second voltage signal, and the voltage difference between the first voltage signal and the second voltage signal is greater than or equal to a preset value.

[0079] The physical / chemical properties of electro-tack reducing materials (such as interfacial charge accumulation, ion migration, or chemical bond breaking) depend on the electric field strength. This approach establishes a potential difference across the electro-tack reducing layer 20 by applying different voltages to the first electrode 30 and the second electrode 40. By setting the voltage difference between the first and second voltage signals to be greater than or equal to a preset value, it is ensured that the generated electric field strength is sufficient to overcome the intermolecular forces within the adhesive material, triggering the tack reduction reaction. In practical applications, this preset value is typically set based on the material properties and thickness of the electro-tack reducing adhesive, as well as the impedance of the electrode materials (such as ITO or graphene).

[0080] Electro-adhesion reduction reactions typically have an activation energy. In the second state, the voltage difference between the first and second voltage signals is greater than or equal to a preset value, ensuring sufficient energy to penetrate the adhesive interface and cause a sharp drop in adhesion. Within a certain range, the larger the voltage difference, the faster the electrochemical reaction. By ensuring the voltage difference reaches or exceeds the preset value, the waiting time for adhesion reduction can be significantly shortened, thereby improving the efficiency of production line maintenance or after-sales replacement. This embodiment allows adjustment of the voltage signal according to actual needs. For example, for panels with large bonding areas, the voltage difference can be appropriately increased (making it much greater than the preset value) to accelerate the peeling process of large-area interfaces.

[0081] By setting the aforementioned preset values, engineers only need to apply just enough voltage, without needing to increase the voltage indefinitely to pursue a reduced adhesion effect, thus protecting the delicate drive circuitry inside the display panel 10 from electrical breakdown. Due to the significant reduction in adhesion and peeling force, panel breakage or carrier board scratches caused by forced mechanical disassembly are avoided.

[0082] In practical applications, the viscosity reduction effect can be achieved simply by setting the voltage difference between the first voltage signal and the second voltage signal to be greater than or equal to a preset value; the actual voltage values ​​of the first and second voltage signals are not limited. For example, both can be positive voltages simultaneously, or both can be negative voltages simultaneously, or one can be positive while the other is 0, or one can be negative while the other is 0. Of course, in an optional embodiment of this disclosure, one of the first voltage signal and the second voltage signal can also be set to be a positive voltage signal and the other to be a negative voltage signal.

[0083] When the first and second voltage signals are applied to voltage signals of opposite polarity, due to their positive and negative polarities respectively, this scheme can easily achieve a voltage difference twice that of unipolar power supply under the same power swing. For example, to obtain a 10V voltage difference, using a combination of +5V and -5V requires less insulation from surrounding circuits than applying 10V on one side, reducing the risk of tip discharge or electrical breakdown at the edges of the first electrode 30 or the second electrode 40. The molecular polarization or interfacial electrochemical reaction of electro-adhesives is closely related to the electric field strength. The combination of positive and negative voltage signals can generate a stronger directional electric field, accelerating the directional migration of ions within the electro-adhesive material. Experiments show that some high-performance electro-adhesive materials require a higher voltage difference to break the chemical bonds or van der Waals forces between molecules. The positive and negative voltage scheme can quickly reach and exceed the preset value corresponding to the voltage difference, stabilizing the viscosity reduction at 70% or more, ensuring a smoother reprocessing process.

[0084] Electro-adhesives typically exhibit polarity bias (e.g., "negative-polarity de-adhesion," meaning the decrease in adhesion primarily occurs at the negatively charged electrode interface). This instance allows for precise control over whether the de-adhesion action occurs on the "panel side" or the "carrier side" by flexibly configuring which electrode is connected to negative voltage and which to positive voltage. If the electro-adhesive is negative-polarity de-adhesion, a negative voltage signal can be applied to the first electrode 30 (panel side) to remove the display panel. This allows the panel to detach instantly from the adhesive layer, while the adhesive layer may still remain firmly attached to the carrier, preventing adhesive residue from contaminating the precision display panel.

[0085] Figure 9 As shown Figure 4 A cross-sectional view of the display module along the CC direction. Figure 10 The diagram shown is a planar schematic of a first electrode 30 corresponding to a display panel 10 in a display module. Please refer to it. Figure 9 and Figure 10 In one optional embodiment of this disclosure, the first electrode 30 includes a first main body portion 31 and a first extension portion 32 connected to the first main body portion 31. Along the thickness direction of the display module, the first main body portion 31 overlaps with the electro-adhesive layer 20, while the first extension portion 32 does not overlap with the electro-adhesive layer 20. The first electrode 30 is configured to acquire signals through the first extension portion 32.

[0086] In this embodiment, the first main body 31 is located directly on the back of the display panel 10, for example, overlapping with the electro-adhesive layer 20 in the thickness direction. The first main body 31 is used to generate a uniform electric field at the interface of the electro-adhesive layer 20 in a powered state, triggering an anti-adhesion reaction. The first extension 32 extends outward from the first main body 31, exceeding the coverage area of ​​the electro-adhesive layer 20. The first extension 32 serves as a physical contact point for connecting an external power source, flexible circuit board, or conductive clamp. The first extension 32 does not overlap with the electro-adhesive layer 20, meaning that no adhesive material is needed to cover the contact area, ensuring direct exposure or easy contact of the conductive medium.

[0087] If the electrodes are completely covered by the electro-adhesive layer 20, it is necessary to pierce the adhesive layer or use a special penetration process when connecting the electrodes. By setting up "non-overlapping" extensions, a clear, independent, and adhesive-free physical space is provided for external connection, improving the efficiency of connection on the production line. The mechanical pressure or heat generated during connection is confined to the first extension 32, avoiding damage to the electro-adhesive layer 20 below the main body and the internal precision structure of the display panel 10.

[0088] In practical applications, the first main body 31 can be located at a position corresponding to the display area and can be made of transparent conductive material so that it is not visible in the display area. The first extension 32 can extend to the non-display area of ​​the display panel 10 (such as the bezel), thereby "hiding" opaque or semi-transparent structures such as power contacts and leads under the bezel, ensuring the visual neatness and transparency of the transparent module.

[0089] It should be noted that the area of ​​the first extension 32 can be increased as needed, thereby reducing the contact resistance when an external power source is connected. This ensures that current can be injected into the first main body 31 quickly and stably under heavy-duty conditions, thus guaranteeing the rapid triggering of the de-sticking reaction.

[0090] Figure 11 The image shown is a planar schematic diagram of the second electrode 40 in the display module. Please refer to it. Figure 9 and Figure 11 In one optional embodiment of this disclosure, the second electrode 40 includes a second main body portion 41 and a second extension portion 42 connected to the second main body portion 41. Along the thickness direction of the display module, the second main body portion 41 overlaps with the electro-adhesive layer 20, while the second extension portion 42 does not overlap with the electro-adhesive layer 20. The second electrode 40 is configured to acquire signals through the second extension portion 42.

[0091] The second main body portion 41 of the second electrode 40 is located on the surface of the carrier plate 00, and its outline overlaps with the electro-adhesion reducing layer 20 and the display panel 10 in the thickness direction. The second electrode 40 acts as an electrode in the electric field, working together with the first electrode 30 on the opposite side to form a uniform electric field in the electro-adhesion reducing layer 20, triggering the de-adhesion reaction. The second extension portion 42 extends from the second main body portion 41 beyond the edge of the electro-adhesion reducing layer 20, and is in a state without adhesive coverage. The second extension portion 42 is used to provide physical contact pads. Because it is not obstructed by the electro-adhesion reducing layer 20, it can directly contact external drive circuits, conductive fixtures, or probes.

[0092] If the contact point is covered by the anti-adhesion layer 20, residual adhesive needs to be cleaned before connection. This solution extends the contact point to a "non-overlapping area" via an extension, ensuring a clean contact interface and improving connection stability and conductivity. In multi-panel splicing, the second extension 42 can be uniformly directed to the non-display edge of the carrier board, facilitating centralized wiring without affecting the front visual effect. The second extension 42 can expand the contact area as needed, reducing contact impedance during power connection and ensuring sufficient voltage difference on large-size carrier boards. When rapid de-adhesion is required, the enlarged extension area can withstand higher instantaneous current, ensuring the potential quickly fills the entire second main body 41, achieving instantaneous and overall adhesive reduction.

[0093] Please continue to refer to this. Figure 9In one alternative embodiment of this disclosure, the first extension 32 and the second extension 42 are located on different sides of the electro-adhesive layer 20 along a direction parallel to the light-emitting surface of the display module.

[0094] Complete decoupling is achieved in physical space by placing the two contact areas on "different sides" of the electro-adhesion layer 20. Along a direction parallel to the screen (i.e., the horizontal plane), the first extension 32 and the second extension 42 are located on different sides of the electro-adhesion layer 20. For example, the first extension 32 is located on the left side, and the second extension 42 is located on the right side; or the first extension 32 is on the top side, and the second extension 42 is on the bottom side. This arrangement ensures that the contact points on the panel side and the contact points on the carrier board side are completely offset in vertical projection and do not obstruct each other.

[0095] If the first extension 32 and the second extension 42 are located on the same side of the electro-adhesive layer 20, external electrical connection devices (such as metal clamps, FPCs, or probes) are prone to collisions or accidental contact during operation, leading to short circuits between the positive and negative terminals. Placing the two connection areas on different sides physically increases the distance between the potential difference connection points, providing a safe and reliable electrical insulation environment for applying "positive and negative voltage" or "high voltage difference," thus preventing damage to the precision display components.

[0096] During heavy-duty maintenance, operators can access power signals from both sides of the module. This "left-right" or "top-bottom" approach avoids tool congestion in the same small area, making clamping, welding, or probing operations smoother. The different side layout makes the connection points of the first electrode 30 (panel side) and the second electrode 40 (carrier board side) clearly distinguishable, reducing the probability of incorrect wiring in complex splicing wall systems.

[0097] Furthermore, introducing the anti-adhesion signal from different sides allows for a more uniform distribution of charge in the first electrode 30 and the second electrode 40. Due to the dispersed contact points, localized heat generation (heat generated by current passing through resistance) is also dispersed, helping to protect the chemical stability of the anti-adhesion adhesive. In the case of multiple display panels 10 laid out flat, this off-side design allows panel control lines and common terminal traces to be routed to two different edges of the splicing unit, thus achieving more orderly wiring management. The extensions can be flexibly arranged according to the specific bezel configuration of the module. For example, the first extension 32 can be hidden on the bonding side (the side with the drive circuit), and the second extension 42 can be hidden on the opposite decorative bezel side, thereby achieving rework functionality while maximizing the visual effect of the ultra-narrow bezel of the transparent splicing screen.

[0098] Figure 12 The image shown is another planar schematic diagram of the first electrode 30 in the display module. Figure 13 The image shown is another planar schematic diagram of the second electrode 40 in the display module. Please refer to it. Figures 10 to 13In one optional embodiment of this disclosure, the first extension 32 and the second extension 42 have different shapes; and / or, the first extension 32 and the second extension 42 have different areas. By differentiating by shape or area, this solution provides extremely high recognizability and electrical compatibility in engineering practice.

[0099] For example, the first extension 32 (panel side) is designed as a semi-circle or elongated shape, while the second extension 42 (carrier board side) is designed as a square or trapezoidal shape. Alternatively, depending on current carrying requirements or space constraints, the area of ​​one extension may be significantly larger than the other. This asymmetrical design makes the two connection terminals visually distinct.

[0100] Under heavy-duty conditions, a specific voltage difference (such as one positive and one negative, or one high and one low) needs to be applied. By distinguishing between the shapes and areas, operators or automated equipment (such as automatic probe stations) can instantly identify which is the panel electrode and which is the carrier electrode. Due to the different shapes or areas, the matching electrical clamps or probes can be designed with corresponding physical interfaces. If the shapes do not match, they cannot be connected, thus physically preventing electrical debonding failure or circuit damage that may be caused by reverse polarity connection.

[0101] Typically, the second electrode 40 (carrier side) serves as a common electrode and may need to support the current loops of multiple display panels 10. Designing its extension (area) to be larger effectively reduces contact resistance, minimizes localized heating under high current, and ensures potential stability. A larger extension area provides more space for soldering or bonding. For the second extension 42, which requires long-term fixed wiring, the large area design enhances the adhesion or soldering strength between the leads and the carrier, preventing leads from detaching during rework disassembly. The first extension 32 (panel side) is often constrained by the panel frame and has limited space. By shaping it (e.g., by creating a slender extension), the conductive area can be maximized within the limited space, ensuring that the voltage difference reaches the display area sufficiently.

[0102] Figure 14 The figure shown is a planar schematic diagram of the second electrode 40 and the electro-reducing adhesive layer in a display module provided in this embodiment of the present disclosure. Figure 15 As shown Figure 14 Please refer to the DD-direction cross-sectional view of the display module. Figure 14 and Figure 15In one optional embodiment of this disclosure, the surface of the carrier plate 00 facing the display panel 10 includes a first signal terminal 61 and a second signal terminal 62. The first signal terminal 61 is correspondingly disposed with the first electrode 30. The first signal terminal 61 is electrically connected to the first electrode 30 through the connecting part 70, and the second signal terminal 62 is electrically connected to the second electrode 40. The first electrode 30 obtains an electrical signal through the first signal terminal 61, and the second electrode 40 obtains an electrical signal through the second signal terminal 62.

[0103] In this embodiment, conductive contacts, namely a first signal terminal 61 and a second signal terminal 62, are pre-fabricated on the bonding surface of the carrier plate 00 facing the display panel 10, forming a dual-channel signal path. The first channel is a cross-layer connection, where the first electrode 30 (panel side) is connected downwards to the first signal terminal 61 on the carrier plate through a dedicated connecting part 70 (which may include conductive adhesive, anisotropic conductive film ACF, silver paste, or metal support pillars, etc.). The second channel is a same-layer connection, where the second electrode 40 (carrier plate side) is directly connected to the second signal terminal 62 on the carrier plate (both may be on the same conductive film layer). The external driving signals of the first electrode 30 and the second electrode 40 are ultimately obtained from the signal terminals on the surface of the carrier plate.

[0104] This solution uses the "connection part 70" to bring the signal from the panel side down to the carrier board, allowing all power-on operations to be completed on the carrier board side. The external power supply only needs to connect to the first signal terminal 61 and the second signal terminal 62 on the carrier board, eliminating the need to find the floating back electrode of the panel, which greatly simplifies the operation of automated probes or bonding equipment.

[0105] The display panel 10 is typically thin, and directly soldering leads to the back of the panel can easily cause damage. By using signal terminals on a carrier board for switching, the mechanical stress and thermal load are transferred to a more robust carrier board (such as glass or acrylic glass), protecting the delicate display panel 10. The introduction of the connector 70 (such as using a mature ACF process) can provide stable interlayer conductivity, ensuring that the voltage difference can be accurately applied to both sides of the electro-adhesive layer 20 under heavy-duty conditions.

[0106] Please continue to refer to this. Figure 14 and Figure 15 In one optional embodiment of this disclosure, the connecting portion 70 includes a first connecting portion 71 and a second connecting portion 72. The first connecting portion 71 is disposed in the same layer as the second electrode 40, and the second connecting portion 72 is located between the first connecting portion 71 and the first electrode 30.

[0107] In this embodiment, the first connecting portion 71 is located on the surface of the receiving substrate 00, at the same physical level as the second electrode 40 (substrate-side electrode). It can be fabricated simultaneously with the second electrode 40, for example, through the same ITO or graphene coating and patterning process, which helps reduce processing steps on the substrate side and improves production efficiency. The second connecting portion 72 is physically located between the first connecting portion 71 and the upper first electrode 30 (panel-side electrode). The second connecting portion 72 may include, for example, conductive adhesive, anisotropic conductive film (ACF), silver paste, etc. As a "gap filler" or "bridging" component, the second connecting portion 72 penetrates the electro-adhesive layer 20 or its edge gaps in the thickness direction, introducing signals from the first electrode 30 into the first connecting portion 71. Since the first connecting portion 71 and the second electrode 40 are on the same layer, a standard electrical contact plane is formed on the substrate surface. Regardless of how the height of the upper display panel 10 is finely adjusted, only the thickness of the second connecting portion 72 needs to be adjusted to achieve a match.

[0108] The first connecting portion 71 adheres tightly to the carrier plate, providing robust mechanical support. The second connecting portion 72, upon contact with it, has a large contact area and good adhesion. The second connecting portion 72 (which can be made of conductive adhesive, silver paste, or anisotropic conductive material) has a certain deformation capacity, absorbing tolerances generated during the bonding of the display panel 10 and the carrier plate, ensuring uninterrupted electrical connection between the first electrode 30 and the signal terminal of the carrier plate during long-term use. Through this segmented structure, the signal from the first electrode 30 is precisely introduced to a predetermined point on the carrier plate side. This allows the voltage acting on both sides of the electro-adhesive layer 20 to originate from two relatively parallel planes under heavy-duty conditions, thereby generating a uniformly distributed electric field throughout the bonding interface and achieving reliable de-adhesion.

[0109] This structure allows the first signal terminal 61 to extend to the edge of the carrier plate via the first connection portion 71. During rework, maintenance personnel only need to apply voltage to a fixed point on the edge plane of the carrier plate to transmit the electrical signal to the first electrode 30 on the back of the panel via the second connection portion 72, truly achieving efficient operation of de-sticking without touching the panel.

[0110] Figure 16 The diagram shown illustrates a connection between the first signal terminal 61 and the second signal terminal 62 provided in this embodiment and a flexible circuit board. Please refer to the provided diagram. Figure 16In one optional embodiment of this disclosure, at least two first signal terminals 61 are located on the same side of the electro-adhesive along a direction parallel to the light-emitting surface of the display module. Thus, in the dimension parallel to the light-emitting surface of the screen (i.e., the horizontal direction), the multiple first signal terminals 61 originally corresponding to different display panels 10 are no longer dispersed, but are uniformly arranged on the same edge side of the electro-adhesive (and the display area). The signals of the first electrodes 30 of each panel can be aggregated using traces on the carrier board surface to form a set of parallel pad arrays. This set of signal terminals is typically located at the border of the non-display area, facilitating centralized insertion and connection with the flexible circuit board 80 or external wiring harness. A single flexible circuit board 80 or integrated wiring harness interface can simultaneously provide anti-adhesion control signals to multiple display panels 10. This avoids wiring everywhere on the four sides of the splicing carrier board, reducing the space occupied on the back of the module. The flexible circuit board controlling anti-adhesion can be centrally mounted on one side of the module. This "single-sided wiring" mode significantly reduces cable length and lowers the risk of electromagnetic interference.

[0111] When heavy-duty maintenance is required, technicians only need to connect a control signal to one side of the carrier board to control multiple display panels. This eliminates the need for frequent fixture movements or changes in electrical connection points, improving operational continuity. For automated production lines, the probe station only needs to probe along one edge of the module to complete electrical testing or de-adhesion triggering for all splicing units, significantly improving production cycle time.

[0112] Because all the first signal terminals 61 are clustered to the same side (e.g., the bottom), the remaining three sides of the module can achieve a physically borderless design. This is crucial for realizing a large-area, seamless transparent video wall, ensuring that there are no extra conductive contacts or leads at the seams that would interfere with the visual experience. Centralized wiring confines opaque metal traces to one edge of the carrier board, allowing most areas to maintain high transmittance and enhancing the overall aesthetic value.

[0113] Furthermore, when the signal terminals are located on the same side, engineers can more easily design traces of equal length or impedance matching to ensure that the voltage signal (first voltage signal) applied to each panel attenuates consistently. This guarantees that the debonding speed of each panel is synchronized under heavy-duty conditions, preventing difficulties in peeling off local panels.

[0114] Please continue to refer to this. Figure 16In one optional embodiment of this disclosure, the first signal terminal 61 located on the same side as the electro-adhesion layer 20 is electrically connected to the control module 81, and the control module 81 acquires electrical signals. In this scheme, the control module 81 acts as the "brain" of the entire heavy industry system, responsible for receiving instructions and accurately distributing current / voltage. Although all signal terminals are physically concentrated on the same side, the control module 81 can logically address each signal terminal. Maintenance personnel can select "panel A" or "panel B" through the software interface, and the control module will only power the signal terminals of the target panel. Compared to manually using probes to find electrodes, the control module, through fixed program control, ensures that voltage is only applied to the selected signal terminals, avoiding de-adhesion or circuit damage in non-target areas.

[0115] In large-scale splicing products, there may be impedance differences between panels at different locations. The control module can detect the current of each circuit in real time and dynamically adjust the output first voltage signal to ensure that the voltage difference across each panel can stably reach the "preset value". The control module can achieve a smooth voltage rise, avoiding charge damage to the film layer or display chip where the first electrode 30 and the second electrode 40 are located by instantaneous high voltage surges, thus extending the electrical life of the module.

[0116] Furthermore, the control module 81 can monitor current changes during the de-adhesion process (impedance typically changes as the electrochemical reaction of the adhesive layer proceeds), thereby determining whether de-adhesion is complete and sending a "removable" signal to the operator. Through the integration of the control module, only one main power supply and control bus are required externally, eliminating the need for independent switches for each panel and significantly reducing the size of electronic components on the back of the display unit. When the display module is operating normally (first state), the control module can force all signal terminals to "ground signal" or "floating," locking the de-adhesion function and ensuring mechanical stability during daily use.

[0117] In practical applications, the control module 81 can be a separate PCB board or a driver IC, while the control module 82 can be integrated on the flexible circuit board 81 or directly bound to the carrier board.

[0118] Figure 17 The diagram shown is a schematic representation of a connection between the flexible circuit board 80 for display and the display panel 10 in a display module provided in this embodiment. Figure 18 The diagram shown illustrates another connection between the flexible circuit board 80 for display and the display panel 10 in the display module provided in this embodiment. Please refer to [link / reference]. Figure 17 and Figure 18In one optional embodiment of this disclosure, the display panel 10 includes a bonding area Q0, which includes a plurality of bonding pads P0; the bonding pads P0 are used for electrical connection with the flexible circuit board 80 for display. Along a direction parallel to the light-emitting surface of the display module, the first signal terminal 61 and the bonding area Q0 are located on the same side of the electro-adhesive layer 20, for example, please refer to... Figure 17 Alternatively, the first signal terminal 61 and the bonding area Q0 are located on opposite sides of the electro-adhesive layer 20, for example, please refer to Figure 18 .

[0119] This embodiment describes the relative positional relationship between the first signal terminal 61 (electro-adhesion control interface) and the bonding area Q0 (the area for providing display signals) of the display panel 10. Please refer to... Figure 17 When the display drive signal input terminal (binding area Q0) and the heavy-duty control signal input terminal (first signal terminal 61) are all concentrated at the bottom edge (or top edge) of the module, the left, right, and top edges of the module can achieve a physical "zero border". When splicing in 1×N (1 row N columns), adjacent panels can be seamlessly connected.

[0120] Please refer to Figure 18 When the first signal terminal 61 and the bonding area Q0 are located on opposite sides of the electro-adhesive layer 20, the bonding area Q0 transmits high-frequency display data signals, while the first signal terminal 61 transmits high-voltage electro-adhesive signals during rework. Separating them on opposite sides (e.g., one above the other) can completely isolate electromagnetic interference physically, improving display stability. When a single side cannot accommodate too many pads and traces, distributing the signal terminals to opposite sides can reduce the width pressure on a single side bezel, achieving a symmetrical visual effect. In some complex mechanical structures, the opposite-side layout allows for access to test probes or flexible circuit boards from two directions, reducing the wiring density at the connectors.

[0121] Figure 19 The diagram shown is another planar schematic of the display module provided in this embodiment. Please refer to [the diagram]. Figure 19 In one optional embodiment of this disclosure, at least a portion of the first signal terminal 61 and at least one second signal terminal 62 are located on the same side of the electro-adhesion layer 20 along a direction parallel to the light-emitting surface of the display module; on the same side of the electro-adhesion layer 20, the first signal terminal 61 and the second signal terminal 62 are arranged along a first direction D1, and along the first direction D1, the second signal terminal 62 is located on the side of the first signal terminal 61 near the edge of the display module.

[0122] This embodiment describes the specific arrangement of the first signal terminal 61 (interface of the first electrode 30) and the second signal terminal 62 (interface of the second electrode 40) at the edge of the carrier board 00. All interfaces required for controlling de-adhesion are uniformly placed on the same edge of the electro-adhesive. The first signal terminal 61 is arranged near the center of the display, and the second signal terminal 62 is arranged near the outermost edge of the display module. Since the second signal terminal 62 is typically on the same layer as the carrier board, while the first signal terminal 61 needs to be bridged upwards to the panel via the connector 70, placing the second signal terminal 62 at the outermost edge allows the external FPC or clamp to be smoothly fixed at the edge, coplanar with the carrier board, before crossing inwards to connect to the first signal terminal 61. This "from far to near" layout ensures that the common loop on the carrier board (the trace of the second electrode 40) can be directly led to the edge without crossing the lead of the first signal terminal 61. This simplifies the circuit topology on the carrier board surface and reduces the risk of interlayer short circuits.

[0123] The outermost part is the common terminal (second signal terminal 62), and the innermost part is the independent control terminal (first signal terminal 61). When powering on, maintenance personnel can quickly locate the common electrode based on the physical characteristic of being "near the edge." Placing the second signal terminal 62 (usually used as a common reference terminal, constantly grounded) on the outermost side provides a certain electrical barrier. During operation, if external scratches or electrostatic discharge occur, the outermost second signal terminal 62 can preferentially absorb the charge, protecting the more precise independent control signal terminal (first signal terminal 61) and the display area on the inner side.

[0124] In this embodiment, all interfaces are clustered to one side and arranged in a high-density, orderly manner within this side. This ensures that the splicing screen has no electrical interference in the other three directions, achieving true three-sided seamless splicing. The linear arrangement along the first direction D1 (from the inside out) saves more area on the edge of the carrier board than a scattered distribution, which is beneficial for further reducing the width of the non-display area.

[0125] Please continue to refer to this. Figure 19 In one optional embodiment of this disclosure, the second signal terminal 62 is electrically connected to the second electrode 40 through the third connection portion 63. Along the second direction D2, the third connection portion 63 is located between the second electrode 40 and the second signal terminal 62. The second direction D2 is parallel to the light-emitting surface of the display module and intersects with the first direction D1. Along the first direction D1, a plurality of first connection portions 71 are located between two third connection portions 63.

[0126] In this embodiment, in a plane parallel to the screen, the third connection portion 63 is located between the second electrode 40 (main functional area) and the second signal terminal 62 (external access point). The third connection portion 63 extends along the "second direction D2," which intersects (e.g., perpendicularly) the first direction D1 where the signal terminals are arranged. Thus, the signal is introduced laterally and then extends to the edge. Along the first direction D1 where the signal terminals are arranged, multiple first connection portions 71 (panel-side paths) are positioned between two third connection portions 63 (carrier-side paths). By connecting the second electrode 40 with two third connection portions 63 on both sides, a "dual-path parallel" power supply or return structure can be formed. This significantly reduces the impedance of the large-area electrode on the carrier side. During rework debonding, current is injected uniformly from both sides. This ensures that the voltage difference between the multiple first electrodes 30 located in the middle area and the common second electrode 40 is highly consistent, avoiding uneven panel stress caused by "fast debonding at the near end and slow debonding at the far end."

[0127] Within the extremely limited non-display area (bezel) at the edge of the carrier board, the paths of the second electrode 40 are positioned on both sides, while the multiple paths of the first electrode 30 are concentrated in the middle. This design maximizes the use of the width in the first direction D1. The third connection portion 63, serving as a common reference ground or stable potential for the carrier board, is distributed on both sides and can provide a certain degree of electromagnetic shielding for the multiple first connection portions 71 in the middle, reducing the risk of signal coupling interference.

[0128] The second electrode 40 (carrier side) is, for example, a continuous large-area film layer. Placing the connectors 70 on both sides makes the stress center of the entire module more stable. Even if one of the third connectors 63 develops micro-cracks or poor contact during assembly or long-term use, the other third connector 63 can still maintain the potential of the second electrode 40, ensuring the reliability of the rework function. This arrangement allows each display module's interface to present a standard form with common terminals on both sides and a control terminal in the middle. This symmetry greatly facilitates the design of flexible circuit boards, enabling the use of symmetrical structures and reducing production and inventory costs.

[0129] Please continue to refer to this. Figure 19In one optional embodiment of this disclosure, the second signal terminal 62, the third connection portion 63, and the second electrode 40 are disposed on the same layer. Thus, on the surface of the carrier substrate 00, the second signal terminal 62, the third connection portion 63, and the second electrode 40 are simultaneously formed through a single film deposition and patterning process (such as ITO / metal mesh etching). There are no physical interfaces or cross-layer connections between the three, and the current flows directly from the signal terminal to the main electrode via the connection portion 70 within the same physical plane. Multiple photolithography or film deposition processes are unnecessary, as are complex interlayer drilling or vertical interconnections. This not only shortens the production cycle but also significantly improves the yield of carrier substrate production. Because they are disposed on the same layer, no additional insulating layer or support structure is needed between the second electrode 40 and the second signal terminal 62, reducing material costs.

[0130] When the second signal terminal 62, the third connection portion 63, and the second electrode 40 are disposed on the same layer, the path of the second electrode 40 is integrated. This completely eliminates the contact resistance that may occur at the interlayer connection points. In the second state (anti-adhesion), due to the extremely low impedance, the electrical signal can be transmitted to the second electrode 40 with almost zero loss. This ensures that the voltage difference can quickly and accurately reach the preset value throughout the entire display area, achieving instantaneous anti-adhesion. Moreover, the integrated design structure is robust and there is no interface peeling problem, greatly improving the service life of the rework system. As a common electrode, the second electrode 40 needs to carry all the current returning from the panel. The same-layer design allows for the use of wider, thicker, and continuous conductive paths, avoiding overheating at the connection points due to current overload.

[0131] Please continue to refer to this. Figure 19 In one optional embodiment of this disclosure, the first connecting portion 71 and the second electrode 40 are disposed on the same layer. The first connecting portion 71 and the second electrode 40 are on the same plane on the receiving carrier 00 and are made of the same material. Although they are on the same layer, they are independent in planar layout, with an insulating gap between them to ensure that the electrical signals of the first electrode 30 and the second electrode 40 do not short-circuit. Because they are on the same layer, the manufacturer can simultaneously pattern the second electrode 40 (functional area) and the first connecting portion 71 (electrical contact base) in a single coating and photolithography / etching process. This reduces the need for repeated coating and alignment steps, lowering process complexity. For large-size splicing carriers, this can significantly reduce production costs and improve shipment yield.

[0132] The first connecting part 71, serving as the first station for signal transfer, provides a low-resistance contact interface due to its being on the same layer as the second electrode 40 and made of superior material. This ensures that during the rework phase, the voltage signal applied to the first electrode 30 can pass through the subsequent vertical connecting section without loss. The same-layer arrangement makes the heat distribution on the carrier plate surface more uniform, avoiding localized thermal stress generated during the electro-adhesion reduction process of the multi-layer stacked structure.

[0133] Figure 20 The diagram shown is another planar schematic of the display module provided in this embodiment. Please refer to [the diagram]. Figure 20 In one optional embodiment of this disclosure, the same first electrode 30 is electrically connected to at least two first signal terminals 61. Along the direction parallel to the light-emitting surface of the display module, the at least two first signal terminals 61 electrically connected to the same first electrode 30 are respectively located on opposite sides of the electro-adhesive layer 20.

[0134] In this embodiment, for the first electrode 30 corresponding to the same display panel 10, the electrical signal is no longer supplied from only one side, but is simultaneously powered through at least two first signal terminals 61 located on opposite sides of the electro-adhesion layer 20, either "left / right" or "top / bottom". The anti-adhesion electrical signal is split into two or more paths and injected into the first electrode 30 from signal terminals in different spatial orientations, so that it is rapidly charged from the edge to the center.

[0135] The conductive material corresponding to the first electrode 30 typically has a certain sheet resistance. When power is applied to one side, the potential builds up more slowly in the area far from the signal end. Powering both ends causes the charge to "counteract" from both sides to the middle, halving the longest path for current transmission, thus achieving instantaneous release and full charging of the charge. This design can significantly shorten the physical waiting time from "power-on command issuance" to "complete interface de-adhesion," which is beneficial for enabling rapid rework of large-size display panels 10.

[0136] On large-area electrodes, single-sided power supply results in a significant voltage drop, leading to thorough debonding at the near end and insufficient debonding at the far end. Power supply from both sides effectively compensates for the voltage drop, ensuring a highly consistent potential across the entire surface of the first electrode 30. This ensures uniform force during panel peeling, preventing warping, cracking, or damage to the precision panel during disassembly due to excessive localized adhesive force.

[0137] Furthermore, since the first electrode 30 is connected through two connection points, even if one of the signal terminals or connection parts 70 (such as silver paste or conductive adhesive) experiences poor contact due to vibration, thermal expansion and contraction, or assembly tolerances, the other signal terminal can still maintain operation. Charge is diverted from the two interfaces, reducing the current density of individual signal terminals and connection parts 70, effectively preventing localized heating and electrochemical ablation at the connection points caused by excessive instantaneous current.

[0138] Please refer to Figure 20 In one optional embodiment of this disclosure, the same second electrode 40 is electrically connected to at least two second signal terminals 62. Along the direction parallel to the light-emitting surface of the display module, the at least two second signal terminals 62 electrically connected to the same second electrode 40 are respectively located on opposite sides of the electro-adhesive layer 20.

[0139] In this embodiment, the second electrode 40 (typically a large-area transparent conductive layer covering the entire carrier plate or cell area) no longer receives signals from only one side, but is simultaneously connected through two (or more) second signal terminals 62 located on opposite sides of the "left / right" or "top / bottom". Current is injected into the second electrode 40 simultaneously from both opposite edges. This design physically forms a parallel current loop, effectively reducing the overall impedance of the rectifier circuit.

[0140] For large-size splicing screens, the second electrode 40 typically uses materials with a certain sheet resistance, such as ITO. Applying power to only one side can cause voltage attenuation at points far from the interface. Dual-end connection ensures that the potential at the center and edge of the electrode is almost identical, solving the "edge effect" during large-area de-adhesion. This guarantees that in the second state, the voltage difference at all points on the de-adhesion layer 20 can stably exceed a preset value, thereby achieving synchronous de-adhesion of the entire panel and avoiding disassembly difficulties caused by localized adhesion.

[0141] Electro-thickening processes (especially in the initial stage) involve rapid ion migration or electrochemical reactions, requiring a large instantaneous current. Dual-ended connection allows current to fill the electrode surface more quickly, significantly shortening the thickening response time. Current shunting from both sides reduces the current density at individual signal terminals and their connections 70. This effectively reduces localized heating at the connection points under high voltage differentials, preventing oxidation or performance degradation of the first and second electrodes due to overheating.

[0142] Furthermore, in the complex environment of large-scale splicing display products, a contact point on the edge of the carrier board may experience poor contact due to mechanical stress, oxidation, or obstruction by foreign objects. The redundant design on both sides ensures that even if one side fails, the other side can still provide sufficient reference potential, greatly improving the success rate of rework operations.

[0143] When both the first electrode 30 and the second electrode 40 are connected at both ends, the electric field lines inside the electro-adhesive layer 20 will exhibit a highly vertical and uniform distribution, rather than extending obliquely from one side. This uniform electric field across the entire plane is the physical prerequisite for achieving "second-level non-destructive peeling" and can effectively protect delicate display panels such as Micro LEDs from damage caused by lateral shear stress.

[0144] It should be noted that when both the first electrode 30 and the second electrode 40 are connected at both ends, the display module may include multiple display panels 10 arranged in a row, i.e., 1×N display panels 10, for example... Figure 20 As shown. However, this disclosure is not limited thereto. In some other embodiments of this disclosure, when both the first electrode 30 and the second electrode 40 are connected at both ends, the display module may further include multiple display panels 10 arranged in two rows, i.e., 2×N display panels 10, such as... Figure 21 As shown, where, Figure 21The diagram shown is another planar schematic of the display module provided in this embodiment. The first signal terminal 61 corresponding to the display panel 10 in the first row is located on one side of the electro-adhesion layer 20, and the first signal terminal 61 corresponding to the display panel 10 in the second row is located on the other side of the electro-adhesion layer 20.

[0145] Figure 22 The diagram shown is another planar schematic of the display module provided in this embodiment. Please refer to [the diagram]. Figure 22 In one optional embodiment of this disclosure, the display module includes a first display panel 11 and a second display panel 12. The area of ​​the first display panel 11 is larger than the area of ​​the second display panel 12. The area of ​​the electro-adhesive layer 20 corresponding to the first display panel 11 is larger than the area of ​​the electro-adhesive layer 20 corresponding to the second display panel 12. The number of first signal terminals 61 electrically connected to the first electrode 30 corresponding to the first display panel 11 is greater than the number of first signal terminals 61 electrically connected to the first electrode 30 corresponding to the second display panel 12.

[0146] This embodiment describes a scenario involving non-uniformly sized panels. The number of signal terminals is positively correlated with the area of ​​the display panel 10. The first display panel 11 has a larger area, corresponding to larger areas of electrodes and electro-adhesive layer 20, thus requiring more first signal terminals 61. Conversely, the second display panel 12 has a smaller area and relatively lower electrical load, thus requiring fewer first signal terminals 61.

[0147] Large-area first electrodes 30 (such as the first display panel 11) often face more severe resistance voltage drops. If only a single signal terminal is used, it takes longer for the charge to diffuse from the edge to the center, resulting in uneven debonding. Increasing the number of signal terminals (multi-point feeding) can significantly reduce the effect of electrode surface resistance, enabling rapid synchronization of potentials throughout the large panel. By increasing the number of feeding points, it is ensured that the voltage difference in the central area of ​​the large panel also meets the requirements, avoiding problems such as damage to the panel or residual adhesive during peeling due to "insufficient debonding in the center".

[0148] In splicing systems, if all panels, regardless of size, are given the same number of contact points, small panels will de-adhere instantly, while large panels may require a much longer wait. By increasing the number of signal terminals on large panels, their charge release speed is accelerated, allowing the first and second panels to reach the peeling state with nearly identical response times, greatly facilitating the unified operation of automated heavy industry equipment. Large-area panels generate a significant current during the de-adhesion process. Increasing the number of signal terminals distributes the total current across multiple contacts, preventing electromigration or ablation at a single signal terminal due to excessive current density.

[0149] For small-area panels, blindly configuring too many signal terminals can lead to crowded wiring around the substrate edges and increased costs for flexible circuit boards. This solution, through "on-demand allocation," saves space around the small panel while ensuring functionality, leaving room for narrow bezel designs in the modules.

[0150] It should be noted that the number of first signal terminals 61 corresponding to different display panels shown in this embodiment is only an example and does not limit the actual number.

[0151] Figure 23 The diagram shown is another planar schematic of the display module provided in this embodiment. Please refer to [the diagram]. Figure 23 In one optional embodiment of this disclosure, the display module includes a first display panel 11 and a second display panel 12. The area of ​​the first display panel 11 is larger than the area of ​​the second display panel 12. The area of ​​the electro-adhesive layer 20 corresponding to the first display panel 11 is larger than the area of ​​the electro-adhesive layer 20 corresponding to the second display panel 12. The area of ​​the first signal terminal 61 electrically connected to the first electrode 30 corresponding to the first display panel 11 is larger than the area of ​​the first signal terminal 61 electrically connected to the first electrode 30 corresponding to the second display panel 12.

[0152] In this embodiment, a larger first signal terminal 61 is configured for the larger first display panel 11, and a smaller first signal terminal 61 is configured for the smaller second display panel 12. The effective contact area of ​​the first signal terminal 61 is positively correlated with the area of ​​the display panel 10.

[0153] Electro-adhesion reduction requires a significant amount of charge to initiate the reaction. Larger panels have higher capacitive loads; increasing the signal terminal area effectively reduces the contact resistance between the external probe or flexible circuit board and the signal terminal. Large panels draw a large current during adhesion reduction; if the signal terminal area is too small, the excessively high current density can lead to Joule heating at the contact points. Increasing the area helps distribute the heat load, preventing localized high temperatures from damaging the electrodes or burning out the flexible circuit board circuitry.

[0154] In a splicing display module, if the interface specifications of the large and small panels are the same, the large panel will have a slower charge charging speed due to its relatively larger "current resistance". Increasing the area of ​​the first signal terminal 61 is equivalent to widening the current channel, ensuring that the large-area first display panel 11 can reach the preset voltage difference with the small-area panel at the same time, realizing global synchronous de-adhesion and improving rework efficiency.

[0155] Larger panels generate greater mechanical vibration and stress during peeling. The larger signal terminal area provides more bonding space for conductive connecting materials (such as conductive adhesive and silver paste), resulting in a more robust electrical connection.

[0156] Figure 24The diagram shown is another planar schematic of the display module provided in this embodiment. Please refer to [the diagram]. Figure 24 In one optional embodiment of this disclosure, the display module 100 includes a first display panel 11 and a second display panel 12. The area of ​​the first display panel 11 is different from that of the second display panel 12. The first display panel 11 and the second display panel 12 correspond to different second electrodes 40, and the different second electrodes 40 are insulated from each other.

[0157] In this embodiment, the second electrode 40 on the carrier plate 00 is no longer a single continuous plane, but is cut into two or more independent regions according to the outline and position of the upper display panel 10 (first display panel 11, second display panel 12). Insulating gaps exist between the different second electrodes 40, so the electric field applied below the first display panel 11 will not be conducted to the second display panel 12 through the carrier plate side electrode. Since the display panels 10 have different areas, the corresponding areas of the second electrodes 40 are also adjusted accordingly, ensuring that each electrode precisely overlaps with the electro-adhesive layer 20 above it in the vertical projection.

[0158] In a splicing display module, if only one damaged panel (such as the first display panel) needs to be replaced, the independently insulated second electrode 40 allows the control module to energize only that specific area. Continuous electrodes would cause an electric field to be generated across the entire carrier board when energized. This design ensures that the electrodes under non-target panels (such as the second display panel) are not energized, thereby maintaining their adhesive stability and preventing other normal panels from loosening or falling off during maintenance.

[0159] Due to their different areas, the first and second display panels have significantly different electrical loads (capacitance and resistance). By physically dividing the second electrode 40, the control module can provide optimal current and voltage parameters for the larger and smaller first electrode 30 respectively, ensuring that the de-adhesion speed and effect of both are optimized without mutual interference. If one of the display units experiences a short circuit or electrical fault, the fault will be confined to a single partition because the second electrodes 40 are mutually insulated, and will not affect the entire display module or system through the common electrode layer. During operation (first state), the mutually insulated electrodes can reduce electrical signal crosstalk between different display units through the substrate, helping to maintain the purity of the image.

[0160] Figure 25 The diagram shown is another planar schematic of the display module provided in this embodiment. The description uses a display module including a display panel 10 as an example, but is not limited thereto. Please refer to... Figure 25In one optional embodiment of this disclosure, the display panel 10 includes a first region A1 and a second region A2, with the second region A2 surrounding the first region A1; the electro-adhesive layer 20 includes a first electro-adhesive portion 21, which overlaps with the second region A2 along the thickness direction of the display module, but does not overlap with the first region A1.

[0161] In this embodiment, the first electro-adhesive layer 21 is only arranged in the second region A2. In the thickness direction of the display module, the adhesive layer only overlaps with the second region A2 at the edge of the panel, and a cavity is formed below the first region A1 or filled with other non-adhesive media. Since the adhesive layer is only distributed in the second region A2 at the edge, the actual area that needs to fail through electrochemical reaction is greatly reduced. This means that under the same current conditions, the de-adhesion reaction is completed faster. The peel force is proportional to the bonding area. Since there is no adhesive in the central first region A1, once the de-adhesion in the second region A2 at the edge is completed, the entire panel can be easily removed from the carrier, greatly reducing mechanical stress damage to the structure of the precision display panel 10.

[0162] The shrinkage stress generated during the curing process of the adhesive often affects the flatness of the display panel 10. Confining the adhesive layer to the edges can prevent visual distortion or color shift caused by stress compression in the central display area (first area A1). For transparent displays, even highly transparent adhesives have a slightly different refractive index than air or glass. Leaving the central area uncoated reduces the number of times light passes through the interface, making the central visual area clearer, and the measured transparency closer to the substrate's limit.

[0163] Furthermore, the center of the display panel 10 often integrates the most sophisticated thin-film transistors (TFTs) and light-emitting units. While the electro-adhesive reaction involves ion migration, completely avoiding the central region further reduces the potential risk of electrical signal interference to the central display components. In addition, by placing the first electro-adhesive portion 21 only in the second region A2, the amount of electro-adhesive used is significantly reduced, which helps to reduce production costs. Moreover, this layout facilitates the removal of air bubbles during the bonding process, avoiding the central air bubble residue problem that easily occurs during full-planar bonding, thus improving the reliability of the encapsulation.

[0164] Figure 26 The diagram shows a relative positional relationship between the electro-adhesive layer 20 and the first electrode 30. In an optional embodiment of this disclosure, the first electrode 30 covers the first electro-adhesive portion 21 along the thickness direction of the display module.

[0165] The electro-adhesion reduction reaction relies on the electric field generated between the electrodes. If the first electrode 30 fails to cover the adhesive layer, some adhesive will be in an electric field dead zone and unable to undergo chemical degradation. This solution ensures that the adhesive along the entire bonding path undergoes an electro-adhesion reduction reaction simultaneously and synchronously. If local electro-adhesion reduction is incomplete, unreacted residual adhesive will generate local stress when peeling off the panel, potentially causing physical tearing of the expensive display panel.

[0166] The direct overlap between the electrode and the adhesive layer means the shortest path for ion migration and chemical bond breaking. This significantly shortens the transition time from applying electricity to the disappearance of viscosity, achieving a response time in seconds. Because the electrode precisely covers the adhesive region, energy is concentrated on the "target material".

[0167] In practical applications, the first electrode 30 can adopt a planar layout, for example... Figure 26 As shown. However, this disclosure is not limited to this; for example, please refer to [reference needed]. Figure 27 In transparent splicing screens, the first electrode 30 (even if it's ITO) and the adhesive layer can slightly affect light. Therefore, the first electrode 30 can be designed in a ring-shaped layout similar to the electro-adhesive layer 20, ensuring that the display core area (first area A1) at the center of the module remains physically unobstructed. The second electrode can also be placed only in the second area A2. The central area has neither electrodes nor adhesive layers, thus ensuring that light can penetrate the display screen in its purest state, achieving an ultra-high-definition, transparent visual effect. Figure 27 The diagram shows another relative positional relationship between the electro-adhesion layer 20 and the first electrode 30.

[0168] Figure 28 The diagram shown is another planar schematic of the display module provided in this embodiment. Please refer to [the diagram]. Figure 28 In one optional embodiment of this disclosure, the electro-adhesive layer 20 further includes a second electro-adhesive portion 22. Along the thickness direction of the display module, the second electro-adhesive portion 22 overlaps with a portion of the first region A1, and the first electrode covers the second electro-adhesive portion 22.

[0169] In this embodiment, the electro-adhesive layer 20 includes a first electro-adhesive portion 21 and a second electro-adhesive portion 22. The first electro-adhesive portion 21 is located in the second edge region A2, providing primary edge support and fixation. The second electro-adhesive portion 22 is located in the first region A1, overlapping with a portion of the display area in the thickness direction. The first electrode 30 not only covers the first electro-adhesive portion 21 at the edge but also extends to cover the second electro-adhesive portion 22 located in the central region.

[0170] For ultra-large or ultra-thin display panels 10, relying solely on the first electro-adhesive portion 21 at the edges may cause deformation of the central area due to gravity or mechanical vibration. The second electro-adhesive portion 22 acts as a "central support," ensuring the overall flatness of the panel. This increases the bonding area and improves the module's peel strength and mechanical robustness during transportation and use.

[0171] Although the second electro-adhesive portion 22 enters the first region A1, it only overlaps with a "part" of the first region A1. Compared to full-plane adhesive application, this "dot matrix" or "local" design significantly reduces the total bonding area and lowers the charge requirement during rework. It should be noted that each area with electro-adhesive has a corresponding first and second electrode. When electricity is applied, the adhesive at the center can undergo an electrochemical reaction simultaneously with the edges. There are no dead zones in the reaction, ensuring that no tensile resistance is generated in the center area during peeling. During rework peeling, if only the edges are de-adhesive, the residual physical force in the center area may cause the panel to break brittlely. This solution, by setting an electrically controllable de-adhesive "support position" at the center, achieves simultaneous loosening across the entire plane from the inside out, greatly protecting the fragile components in the display panel.

[0172] In this embodiment, the second electro-adhesive portion 22 occupies only a small portion of the space in the first region A1. By rationally designing the shape of these "support positions" (such as strip structures), their impact on the transparent display effect can be minimized, thereby maintaining a very high overall transparency while ensuring mechanical strength.

[0173] Figure 29 The diagram shown is another planar schematic of the display module provided in this embodiment. Please refer to [the diagram]. Figure 25 In one optional embodiment of this disclosure, the first electro-adhesive portion 21 overlapping with the second region A2 has a continuous structure; or, please refer to... Figure 29 The first electro-adhesive overlapping with the second zone A2 includes a plurality of electro-adhesive sub-parts 210, which are spaced apart.

[0174] When the first electro-adhesive layer 21 overlapping with the second zone A2 is a continuous structure, the first electro-adhesive layer 21 forms a closed and complete ring along the edge of the panel. The continuous adhesive layer acts like a "sealing ring," completely preventing external moisture, oxygen, and dust from entering the display module. For environmentally sensitive components such as Micro LEDs, this helps ensure their long-term stability. Moreover, the continuous adhesive layer ensures very uniform stress on the edges, eliminating weak points and effectively preventing local warping or edge chipping of the panel when subjected to lateral impacts. During heavy-duty power-up, the current can be distributed along the continuous adhesive layer path, resulting in a relatively stable chemical reaction, suitable for precision modules requiring extremely high peel smoothness.

[0175] When the first electro-adhesive portion 21 overlapping with the second zone A2 includes multiple spaced electro-adhesive sub-portions 210, the "tearing force" during peeling is dispersed into multiple independent lattice resistances because the adhesive is no longer a continuous long chain. This makes the panel easier to remove under the same electrical conditions, further reducing the physical load on the carrier board and the panel during rework. In the production bonding process, the gaps between different electro-adhesive sub-portions 210 can act as "venting channels," preventing air from being trapped inside the adhesive layer and forming bubbles, thereby improving the flatness and visual quality of the bond. Engineers can precisely fine-tune the bonding strength of the module by adjusting the number, size, and spacing of the sub-portions.

[0176] Figures 25 to 29 This explanation uses a display module consisting of one display panel 10 as an example. When the display module includes two or more display panels 10, the electro-adhesive layer 20 can also be implemented as... Figures 25 to 29 The structure shown in any embodiment, for example, please refer to Figure 30 , Figure 30 The diagram shows another planar schematic of the display module provided in this embodiment. This embodiment uses a display module comprising a larger first display panel 11 and a smaller second display panel 12 as an example. The electro-adhesive layer 20 corresponding to the first display panel 11 may include a first electro-adhesive portion 21 disposed in the second region A2 and a second electro-adhesive portion 22 disposed in the first region A1, thereby improving the fixing ability of the electro-adhesive layer 20 to the larger first display panel 11. The electro-adhesive layer 20 corresponding to the second display panel 12 may only include the first electro-adhesive portion 21 disposed in the second region A2, thereby ensuring the fixing ability of the electro-adhesive layer 20 to the second display panel 12 while reducing the overall material usage of the electro-adhesive layer 20, saving costs, and facilitating the de-adhesion operation.

[0177] Please refer to Figure 30 and Figure 31 In one optional embodiment of this disclosure, the outer contour shape of the second region A2 is adapted to the outer contour shape of the display panel 10. Regardless of whether the display panel 10 is a conventional rectangle or a special circle, sector, or other irregular shape, the outer contour of the second region A2 (adhesive ring) will scale or deform synchronously with it. In this way, the distance between the outer edge of the electro-adhesive and the physical edge of the panel remains constant, or even completely coincides, ensuring that the adhesive force reaches the outermost edge of the panel. Figure 31 The diagram shown is another planar schematic of the display module provided in an embodiment of this disclosure.

[0178] Because the outer contour of the adhesive layer conforms to the outer contour of the panel, it avoids the extra frame space occupied by adhesive layer protrusions or irregular shapes. When the contour of the adhesive layer is consistent with the contour of the panel, mechanical stress can be evenly distributed along the edge of the panel, avoiding stress concentration caused by too much or too little glue in some areas, thereby reducing the risk of the panel breaking during transportation or operation.

[0179] In the second state (electro-assisted de-adhesion), because the edge of the adhesive layer is similar to the contour of the panel edge, the peeling action can begin from a regular edge. This ensures that the vector direction of the peeling force is perpendicular to the panel edge, preventing "tear points" or "adhesive residue" caused by abrupt changes in the shape of the adhesive. The edges of the display panel 10 are usually the most vulnerable parts. The conformal design ensures that the de-adhesion electric field can precisely cover every millimeter of the edge, ensuring damage-free separation at the edge.

[0180] It should be noted that, Figure 31 The illustration uses only a fan-shaped display module as an example, but is not limited thereto. In other embodiments of this disclosure, the display module may also be embodied in other irregular shapes.

[0181] In one alternative embodiment of this disclosure, please refer to Figure 5 or Figure 15 The supporting plate 00 is a planar structure; or, please refer to... Figure 32 The carrier plate 00 includes a flat portion 01 and a protruding portion 02. The protruding portion 02 is disposed around the flat portion 01 and is located on the side surface of the flat portion 01 on which the display panel 10 is disposed. The display panel 10 and the electro-adhesive layer 20 are located in the space formed by the flat portion 01 and the protruding portion 02. Figure 32 As shown Figure 4 Another BB-direction cross-sectional view of the display panel 10.

[0182] When the carrier plate 00 is a planar structure, its surface is completely flat and without any undulations. The carrier plate 00 has a simple structure and low processing cost. The display panel 10 and the electro-adhesive layer 20 can be directly stacked on the smooth carrier plate 00.

[0183] When the carrier plate 00 includes a flat portion 01 and a raised portion 02, a ring of raised portions 02 is designed around the display area on the carrier plate, thus forming a relatively recessed "groove" at the center. The display panel 10 and the electro-adhesive layer 20 are "embedded" into this accommodating space formed by the flat portion 01 and the raised portion 02. The raised portion 02 acts like a "protective wall," and its height is usually the same as or slightly higher than the total thickness of the display panel 10 and the adhesive layer. This effectively prevents external hard objects from directly impacting the side of the panel (the side is the most vulnerable part of the Micro LED module), greatly reducing the risk of screen breakage. During vibration or transportation, the raised portion 02 provides physical restraint, preventing the panel from lateral displacement on the carrier plate and ensuring the long-term stability of the splicing gap.

[0184] During the bonding process, the electro-adhesive (especially liquid or semi-solid adhesive) is confined within the dam. The protrusion 02 effectively prevents adhesive overflow, avoiding contamination of electrical contacts in non-bonded areas or affecting visual edges. Furthermore, the protrusion 02 provides a physical reference for the placement of the display panel 10. During mechanical assembly or manual maintenance, the panel can be directly "dropped" into the slot for rapid positioning, greatly improving alignment accuracy during large-area splicing. The protrusion 02 can be made of black matrix (BM) material or light-absorbing material to shield lateral stray light, enhancing the contrast of the display module and the visual integration at the splicing points.

[0185] Based on the same inventive concept, this disclosure also provides a display device. Figure 33 The diagram shown is a structural schematic of a display device 200 provided in an embodiment of this disclosure. Please refer to it. Figure 33 The display device 200 includes at least one display panel 100 as described in any of the above embodiments. Figure 33 The illustrated embodiment is only used as an example where the display device includes one display panel. In some other embodiments of this disclosure, the display device 200 may also include at least two display panels 100, for example, please refer to [reference needed]. Figure 34 , Figure 34 The diagram shown illustrates another structural design of the display device 200 provided in this embodiment. This embodiment uses four arrayed display panels 100 as an example for illustration, but does not limit the actual number of display panels included. Because the display panels provided in this embodiment can achieve extremely narrow bezels, when at least two such display panels are joined together, the entire display device can present a highly coherent and unified image, significantly reducing or eliminating the "black lines" or "disjointed feel" caused by traditional thick bezels, effectively improving the display effect of large-screen display devices.

[0186] The display device 200 provided in this embodiment can be any electronic device with display function, such as a touch screen, mobile phone, tablet computer, laptop computer, e-reader, or television, or it can be a large-size display device such as a giant advertisement, a command center screen, or a video wall. The display device 200 provided in this embodiment has the beneficial effects of the display panel provided in this embodiment. For details, please refer to the specific descriptions of the display panel in the above embodiments, which will not be repeated here.

[0187] Understandable, Figure 33 and Figure 34 The figure illustrates only one shape of the display device 200 using a rectangular structure as an example. In some other embodiments of this disclosure, the display device 200 may also be circular, elliptical, fan-shaped or any other feasible shape, and this disclosure does not specifically limit it in this regard.

[0188] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0189] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display module, characterized in that, include: Support plate; A display panel is disposed on one side surface of the support plate; An electro-adhesive layer is located between the carrier plate and the display panel; The first electrode and the second electrode are located on opposite sides of the electro-adhesion reducing layer along the thickness direction of the display module, and the first electrode, the second electrode and the electro-adhesion reducing layer overlap.

2. The display module according to claim 1, characterized in that, The display panel includes a first electrode layer, with the first electrode located on the first electrode layer; the second electrode is located between the electro-adhesive layer and the carrier plate.

3. The display module according to claim 1, characterized in that, The first electrode is located between the display panel and the electro-adhesion layer, and the second electrode is located between the electro-adhesion layer and the carrier plate.

4. The display module according to claim 1, characterized in that, The display module includes at least two display panels and at least two first electrodes, wherein the first electrodes are disposed corresponding to the display panels and the different first electrodes are insulated from each other.

5. The display module according to claim 4, characterized in that, Different display panels correspond to the same second electrode.

6. The display module according to claim 4, characterized in that, Different display panels correspond to different second electrodes, and the different second electrodes are electrically connected; or, the different second electrodes are insulated from each other.

7. The display module according to claim 1, characterized in that, The display panel includes a first state and a second state. In the first state, the first electrode and the second electrode are configured to receive the same electrical signal, or the first electrode and the second electrode are configured to float. In the second state, the first electrode and the second electrode are configured to receive different electrical signals.

8. The display module according to claim 7, characterized in that, In the first state, when the first electrode and the second electrode are configured to receive the same electrical signal, the electrical signal is a ground signal.

9. The display module according to claim 7, characterized in that, In the second state, the first electrode is configured to receive a first voltage signal, the second electrode is configured to receive a second voltage signal, and the voltage difference between the first voltage signal and the second voltage signal is greater than or equal to a preset value.

10. The display module according to claim 9, characterized in that, One of the first voltage signal and the second voltage signal is a positive voltage signal, and the other is a negative voltage signal.

11. The display module according to claim 1, characterized in that, The first electrode includes a first main body portion and a first extension portion connected to the first main body portion. Along the thickness direction of the display module, the first main body portion overlaps with the electro-adhesive layer, and the first extension portion does not overlap with the electro-adhesive layer. The first electrode is configured to acquire a signal through the first extension portion.

12. The display module according to claim 11, characterized in that, The second electrode includes a second main body portion and a second extension portion connected to the second main body portion. Along the thickness direction of the display module, the second main body portion overlaps with the electro-adhesive layer, while the second extension portion does not overlap with the electro-adhesive layer. The second electrode is configured to acquire signals through the second extension portion.

13. The display module according to claim 12, characterized in that, Along a direction parallel to the light-emitting surface of the display module, the first extension and the second extension are located on different sides of the electro-adhesive layer.

14. The display module according to claim 12, characterized in that, The first extension and the second extension have different shapes; and / or the first extension and the second extension have different areas.

15. The display module according to claim 1, characterized in that, The surface of the carrier plate facing the display panel includes a first signal terminal and a second signal terminal. The first signal terminal is disposed corresponding to the first electrode. The first signal terminal is electrically connected to the first electrode through a connecting part, and the second signal terminal is electrically connected to the second electrode. The first electrode obtains an electrical signal through the first signal terminal, and the second electrode obtains an electrical signal through the second signal terminal.

16. The display module according to claim 15, characterized in that, The connecting portion includes a first connecting portion and a second connecting portion. The first connecting portion is disposed in the same layer as the second electrode, and the second connecting portion is located between the first connecting portion and the first electrode.

17. The display module according to claim 15, characterized in that, Along a direction parallel to the light-emitting surface of the display module, at least two of the first signal terminals are located on the same side of the electro-adhesive.

18. The display module according to claim 17, characterized in that, The first signal terminal, located on the same side as the electro-adhesive layer, is electrically connected to the control module, and obtains electrical signals through the control module.

19. The display module according to claim 15, characterized in that, The display panel includes a bonding area, which includes multiple bonding pads; along a direction parallel to the light-emitting surface of the display module, the first signal terminal and the bonding area are located on the same side of the electro-adhesive layer, or the first signal terminal and the bonding area are located on opposite sides of the electro-adhesive layer.

20. The display module according to claim 16, characterized in that, Along a direction parallel to the light-emitting surface of the display module, at least a portion of the first signal terminal and at least one second signal terminal are located on the same side of the electro-adhesion layer; on the same side of the electro-adhesion layer, the first signal terminal and the second signal terminal are arranged along a first direction, and along the first direction, the second signal terminal is located on the side of the first signal terminal near the edge of the display module.

21. The display module according to claim 20, characterized in that, The second signal terminal is electrically connected to the second electrode through a third connection portion. Along the second direction, the third connection portion is located between the second electrode and the second signal terminal. The second direction is parallel to the light-emitting surface of the display module and intersects with the first direction. Along the first direction, a plurality of first connection portions are located between two third connection portions.

22. The display module according to claim 21, characterized in that, The second signal terminal and the third connection portion are disposed in the same layer as the second electrode.

23. The display module according to claim 22, characterized in that, The first connecting portion is disposed in the same layer as the second electrode.

24. The display module according to claim 15, characterized in that, The same first electrode is electrically connected to at least two first signal terminals. Along the direction parallel to the light-emitting surface of the display module, the at least two first signal terminals electrically connected to the same first electrode are respectively located on opposite sides of the electro-adhesive layer.

25. The display module according to claim 15, characterized in that, The same second electrode is electrically connected to at least two second signal terminals. Along the direction parallel to the light-emitting surface of the display module, the at least two second signal terminals electrically connected to the same second electrode are respectively located on opposite sides of the electro-adhesive layer.

26. The display module according to claim 1, characterized in that, The display module includes a first display panel and a second display panel. The area of ​​the first display panel is larger than the area of ​​the second display panel. The area of ​​the electro-adhesive layer corresponding to the first display panel is larger than the area of ​​the electro-adhesive layer corresponding to the second display panel. The number of first signal terminals electrically connected to the first electrode corresponding to the first display panel is greater than the number of first signal terminals electrically connected to the first electrode corresponding to the second display panel.

27. The display module according to claim 1, characterized in that, The display module includes a first display panel and a second display panel. The area of ​​the first display panel is larger than the area of ​​the second display panel. The area of ​​the electro-adhesive layer corresponding to the first display panel is larger than the area of ​​the electro-adhesive layer corresponding to the second display panel. The area of ​​the first signal terminal electrically connected to the first electrode corresponding to the first display panel is larger than the area of ​​the first signal terminal electrically connected to the first electrode corresponding to the second display panel.

28. The display module according to claim 1, characterized in that, The display module includes a first display panel and a second display panel. The area of ​​the first display panel is different from that of the second display panel. The first display panel and the second display panel correspond to different second electrodes, and the different second electrodes are insulated from each other.

29. The display module according to claim 1, characterized in that, The display panel includes a first area and a second area, with the second area surrounding the first area; the electro-adhesive layer includes a first electro-adhesive portion, which overlaps with the second area but does not overlap with the first area along the thickness direction of the display module.

30. The display module according to claim 29, characterized in that, Along the thickness direction of the display module, the first electrode covers the first electro-adhesive portion.

31. The display module according to claim 29, characterized in that, The electro-adhesive layer further includes a second electro-adhesive portion. Along the thickness direction of the display module, the second electro-adhesive portion overlaps with a portion of the first area, and the first electrode covers the second electro-adhesive portion.

32. The display module according to claim 29, characterized in that, The outer contour shape of the second area is adapted to the outer contour shape of the display panel.

33. The display module according to claim 29, characterized in that, The first electro-adhesive portion overlapping with the second region is a continuous structure, or the first electro-adhesive portion overlapping with the second region includes multiple electro-adhesive sub-parts, which are spaced apart.

34. The display module according to claim 1, characterized in that, The carrier plate has a planar structure; or, the carrier plate includes a planar portion and a protruding portion, the protruding portion is arranged around the planar portion, and the protruding portion is located on the side surface of the planar portion on which the display panel is arranged; the display panel and the electro-adhesive layer are located in the space formed by the planar portion and the protruding portion.

35. A display device, characterized in that, Includes the display module described in any one of claims 1 to 34.

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