Display screen module, preparation method and display device

Abstract

The embodiment of the present application provides a display screen module, a preparation method and a display device, wherein the display screen module comprises a display area and a wiring circuit board area; the wiring circuit board area comprises a first main body area, a blocking area and a second main body area; a first direction of the wiring circuit board area is a direction from the first main body area to the second main body area; a second direction of the wiring circuit board area is perpendicular to the first direction; the first main body area is arranged on one side of the wiring circuit board area close to the display area; the blocking area is arranged on one side of the first main body area away from the display area; the second main body area is arranged on one side of the blocking area away from the first main body area; the blocking area comprises a blocking structure and a blocking groove, the blocking structure is arranged on one side close to the first main body area, and the blocking groove is arranged on one side of the blocking structure close to the second main body area; wherein the blocking structure and the blocking groove are used for blocking an inkjet printing layer flowing from the first main body area to the second main body area.

Description

Technical Field

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

[0002] Currently, in order to solve the HIAA waviness (water ripple and bump defects in the hole area) problem, after the TOC (top organic layer) process is completed, a 2nd IJP (Ink Jet Printing, IJP) process is added to the display module to improve the bump defects under light in the hole area.

[0003] However, due to the high fluidity of IJP, the flow of liquid coating on the display module can cause overflow problems. When the liquid coating flows into the bending area, peeling will occur during the MDL bending process. Summary of the Invention

[0004] The purpose of this invention is to provide a display module, a manufacturing method, and a display device to improve the anti-arching phenomenon of the film layer. The specific technical solution is as follows:

[0005] This application provides a display module, which includes a display area and a wiring circuit board area;

[0006] The wiring circuit board area includes a first main area, a blocking area, and a second main area;

[0007] The first direction of the wiring circuit board area is the direction from the first main body area toward the second main body area;

[0008] The second direction of the wiring circuit board area is perpendicular to the first direction;

[0009] The first main body area is located on the side of the wiring circuit board area closer to the display area; the blocking area is located on the side of the first main body area away from the display area; the second main body area is located on the side of the blocking area away from the first main body area.

[0010] The blocking area includes a blocking structure and a blocking groove. The blocking structure is disposed on the side close to the first main body area, and the blocking groove is disposed on the side of the blocking structure close to the second main body area.

[0011] The blocking structure and the blocking groove are used to block the inkjet printing layer flowing from the first main body area to the second main body area.

[0012] In some embodiments of this application, the trace circuit board area further includes:

[0013] Protective layer, interlayer insulating layer, bottom insulating layer, first touch metal layer, second touch metal layer, source and drain layers, and inkjet printing layer;

[0014] The first touch metal layer is disposed on one side of the bottom insulating layer, the interlayer insulating layer is disposed on the side of the first touch metal layer away from the bottom insulating layer, the second touch metal layer is disposed on the side of the interlayer insulating layer away from the bottom insulating layer, the protective layer is disposed on the side of the second touch metal layer away from the bottom insulating layer, and the inkjet printing layer is disposed on the side of the protective layer away from the bottom insulating layer.

[0015] The blocking structure and blocking groove are disposed in the protective layer of the blocking area.

[0016] In some embodiments of this application, the second touch metal layer is isolated in the blocking region, and the protective layer in the blocking region is in contact with the interlayer insulating layer; the interlayer insulating layer in the first body region and the second body region is provided with through holes, the first touch metal layer and the second touch metal layer are electrically connected through the through holes, and the second touch metal layer is electrically connected to the source and drain layers through the through holes.

[0017] In some embodiments of this application, the source-drain layer is embedded in the bottom insulating layer of the second main body region. The bottom insulating layer in the second main body region has an opening structure. The first touch metal layer extends into the second main body region and is cut off at the opening structure. The source-drain layer contacts the interlayer insulating layer at the opening structure. The second touch metal layer is electrically connected to the source-drain through the through hole in the opening structure.

[0018] In some embodiments of this application, the through hole includes: a first through hole, a second through hole, and a third through hole;

[0019] The first through-hole is located in the interlayer insulation layer of the first main body area on the side near the blocking area;

[0020] The second through hole is located in the interlayer insulation layer of the second main body area near the blocking area;

[0021] The third through hole is located at the position of the interlayer insulating layer in the opening structure, and is located on the side of the second through hole away from the display area;

[0022] The first touch metal layer in the first main body region is electrically connected to the second touch metal layer in the first main body region through the first through-hole; the first touch metal layer in the second main body region is electrically connected to the second touch metal layer in the second main body region through the second through-hole, and the second touch metal layer in the second main body region is electrically connected to the source and drain layers in the second main body region through the third through-hole.

[0023] In some embodiments of this application, the blocking structure of the blocking area is a cylindrical recessed structure.

[0024] In some embodiments of this application, multiple cylindrical recessed structures are arranged at intervals along a first direction to form multiple rows of cylindrical recessed structures, and the cylindrical recessed structures between two adjacent rows of cylindrical recessed structures are staggered in a second direction.

[0025] In some embodiments of this application, the length of the cylindrical recessed structure in the first direction is not less than the gap between two adjacent cylindrical recessed structures in the same row of cylindrical recesses.

[0026] In two adjacent rows of cylindrical recesses, the midline of the cylindrical recess structure in one row is collinear with the midline of the gap between two adjacent cylindrical recess structures in the other row.

[0027] In some embodiments of this application, the blocking structure is a drainage channel that penetrates the sidewall of the protective layer and is arranged along a first direction; the drainage channel is arc-shaped.

[0028] In some embodiments of this application, the center of the drainage groove is located in the second main body area.

[0029] This application also provides a method for manufacturing a display module, the method comprising: obtaining a pre-processed display module, the pre-processed display module comprising: a bottom insulating layer, an interlayer insulating layer, a first touch metal layer, a second touch metal layer, a source-drain layer, and a protective layer;

[0030] The protective layer in the blocking area of ​​the trace circuit board area is etched to form a blocking structure and a blocking groove.

[0031] An inkjet-printed layer is formed on the side of the protective layer away from the bottom insulating layer;

[0032] Perform subsequent preparation processes.

[0033] In some embodiments of this application, the blocking structure of the blocking area is a columnar recessed structure, and multiple columnar recessed structures are arranged at intervals along a first direction to form multiple rows of columnar recessed structures. The columnar recessed structures between two adjacent rows of columnar recessed structures are staggered in a second direction.

[0034] In some embodiments of this application, the blocking structure is a drainage channel that penetrates the sidewall of the protective layer and is arranged along a first direction; the drainage channel is arc-shaped.

[0035] This application also provides a display device, including the display module described in any of the above embodiments.

[0036] Beneficial effects of the embodiments of the present invention:

[0037] This invention provides a display module, a manufacturing method, and a display device. The display module includes a display area and a wiring circuit board area. The wiring circuit board area includes a first main body area, a blocking area, and a second main body area. The blocking area includes a blocking structure and a blocking groove. The blocking area is located between the first and second main body areas. During inkjet printing, the flowing liquid coating flows from the first main body area to the second main body area. When the liquid coating passes through the blocking area, the blocking structure and blocking groove block and hold the liquid, changing the flow direction of the liquid coating and forming a double blockage. This slows down the flow speed of the liquid coating and changes its flow direction, further reducing the amount of liquid coating flowing into the second main body area and improving the film layer arching phenomenon in the module bending process.

[0038] Of course, implementing any product or method of the present invention does not necessarily require achieving all of the advantages described above at the same time. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these drawings.

[0040] Figure 1 This is a cross-sectional schematic diagram of the wiring circuit board area of ​​a display module in the prior art.

[0041] Figure 2 for Figure 1 A top view of the display module in the middle;

[0042] Figure 3 This is an overall top view of the display module provided in the first embodiment of this application;

[0043] Figure 4 A cross-sectional schematic diagram of the wiring circuit board area of ​​the display module provided in the first embodiment of this application;

[0044] Figure 5 for Figure 4 A top view of the display module in the middle;

[0045] Figure 6 A cross-sectional schematic diagram of the wiring circuit board area of ​​the display module provided in the second embodiment of this application;

[0046] Figure 7 for Figure 6 A top view of the display module.

[0047] Figure label:

[0048] First main area A, blocking area B, second main area C, first direction X, second direction Y;

[0049] 1. Protective layer (OC, protective layer made of acrylic resin and epoxy resin), 11. Barrier structure 11, columnar recessed structure 111, drainage groove 112, columnar recessed row 113, barrier groove 12, gap between two adjacent columnar recessed structures 13, center line of columnar recessed structure 141, center line of gap between two adjacent columnar recessed structures 142.

[0050] First touch metal layer (TMA) 21, second touch metal layer (TMB) 22, source-drain layer (SD) 23;

[0051] Interlayer insulating layer (TLD) 3, through hole 31, first through hole 311, second through hole 312, third through hole 313;

[0052] Bottom insulating layer 4, inkjet printing layer 5, module cutting channel 6, display area a, IC pad (soldering pad) electrode 7, wiring circuit board area b. Detailed Implementation

[0053] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art based on this application are within the scope of protection of the present invention.

[0054] In related technologies, such as Figure 1 and Figure 2 As shown, Figure 1 This is a cross-sectional schematic diagram of the wiring circuit board area of ​​a display module in the prior art. Figure 2 for Figure 1 A top view of the display module. For ease of observation, Figure 2 The protective layer 1 covering the second touch metal layer 22 on the side away from the bottom insulating layer 4 is not shown.

[0055] In related technologies, to prevent the inkjet printed layer 5 from flowing from the first main body area A to the second main body area C, a blocking groove 12 is provided in the blocking area B between the first main body area A and the second main body area C to accommodate the inkjet printed layer 5 overflowing from the first main body area A. However, under this design, although the blocking groove 12 serves to accommodate the inkjet printed layer 5, given the fluidity of the inkjet printed layer 5, it is prone to overflow and flow into the second main body area C, ultimately leading to a peeling phenomenon during the MDL bending process.

[0056] To address the aforementioned technical problems, this application provides a display module, such as... Figure 3 and Figure 4 As shown, Figure 3 This is an overall top view of the display module provided in the first embodiment of this application. Figure 4 This is a cross-sectional schematic diagram of the wiring circuit board area of ​​the display module provided in the first embodiment of this application. For ease of observation, Figure 3 The protective layer 1 covering the second touch metal layer 22 on the side away from the bottom insulating layer 4 is not shown. The display module includes: a display area a and a wiring circuit board area b; the wiring circuit board area b includes a first main area A, a blocking area B, and a second main area C; the first direction X of the wiring circuit board area b is the direction from the first main area A to the second main area C; the second direction Y of the wiring circuit board area b is perpendicular to the first direction X; the first main area A is located on the side of the wiring circuit board area b closest to the display area a; the blocking area B is located on the side of the first main area A away from the display area a; the second main area C is located on the side of the blocking area B away from the first main area A; the blocking area B includes a blocking structure 11 and a blocking groove 12, the blocking structure 11 is located on the side of the blocking structure 11 closest to the first main area A, and the blocking groove 12 is located on the side of the blocking structure 11 closest to the second main area C; wherein, the blocking structure 11 and the blocking groove 12 are used to block the inkjet printing layer 5 flowing from the first main area A to the second main area C.

[0057] In this embodiment, the display module includes a display area a and a wiring circuit board area b. The wiring circuit board area b includes a first main area A, a blocking area B, and a second main area C. The first main area A is connected to the display area a, and the second main area C is a bending area. The blocking area B is located between the first main area A and the second main area C. The blocking area B includes a blocking structure 11 and a blocking groove 12. The blocking groove 12 is used to accommodate the inkjet printing layer 5 and needs to have a certain depth. In one example, the blocking groove 12 can penetrate through the protective layer 1 along the thickness direction of the protective layer 1. In some possible embodiments, the blocking groove 12 can also penetrate through the sidewall of the protective layer 1 along the first direction X, thereby enabling the inkjet printing layer 5 flowing into the blocking groove 12 to be discharged. During the secondary inkjet printing process, the flowing liquid coating flows from the first main area A to the second main area C. When the liquid coating passes through the blocking area B, the blocking structure 11 blocks and places the liquid, and changes the flow direction of the liquid coating, forming a double block with the blocking groove 12, thereby slowing down the flow speed of the liquid coating and changing the flow direction, further improving the problem of film layer arching caused by the liquid coating flowing to the second main body area C in the module bending process.

[0058] The following will use the first embodiment of the display module provided in this application as an example to introduce the display module provided in this application.

[0059] In the first embodiment of this application, as Figures 3 to 5 As shown, Figure 5 for Figure 4 A top view of the display module. For ease of observation, Figure 5 The protective layer 1 covering the second touch metal layer 22 on the side away from the bottom insulating layer 4 is not shown. The blocking structure 11 is a drainage channel 112 arranged along the first direction X, penetrating the sidewall of the protective layer 1; the drainage channel 112 is arc-shaped. The center of the drainage channel 112 is located in the second main body area C.

[0060] In this embodiment, the blocking structure 11 is an arc-shaped drainage channel 112, with its center on the side of the second main body area C. When the inkjet printed layer 5 flows to the blocking structure 11, it flows along the through direction of the drainage channel 112 in the first direction X towards the outside of the module cutting channel 6, thereby accommodating the inkjet printed layer 5 and guiding it to an area with less or no harm. Furthermore, a blocking channel 12 is also provided on the side of the drainage channel 112 near the second main body area C as a second layer of protection, more effectively preventing the overflow of the inkjet printed layer 5 and the resulting flow of liquid coating into the second main body area C, which could lead to film arching during the module bending process.

[0061] In this embodiment, the more drainage channels 112 there are, the lower the probability of product overflow risk. The number of drainage channels 112 can be one, two, three, or more, specifically set according to the actual width of the blocking area B. The width of the drainage channel 112 can be the same as the width of the blocking channel 12, or slightly larger or smaller than the width of the blocking channel 12. To ensure the strength of the wiring circuit board area b, the drainage channel 112 should not be designed too wide. In one example, the width of the drainage channel 112 is 0.5-3 mm. It is understood that since different products have different wiring circuit board areas b, the size of the blocking structure 11 in this application is only an example and is not intended to limit the protection scope of this application. In actual scenarios, the size of the blocking structure 11 can be set according to the actual product size. In actual production, different numbers, widths, and curvatures of drainage channels can be set according to actual needs, as long as the blocking effect on the inkjet printing layer 5 can be achieved. The width of the blocking channel 12 can refer to the width of the blocking channel 12 in related technologies, and is not specifically limited in this application.

[0062] In some embodiments of this application, such as Figure 4 and Figure 5 As shown, the trace circuit board area b includes: a protective layer 1, an interlayer insulating layer 3, a bottom insulating layer 4, a first touch metal layer 21, a second touch metal layer 22, a source-drain layer 23, and an inkjet printing layer 5; the first touch metal layer 21 is disposed on one side of the bottom insulating layer 4, the interlayer insulating layer 3 is disposed on the side of the first touch metal layer 21 away from the bottom insulating layer 4, the second touch metal layer 22 is disposed on the side of the interlayer insulating layer 3 away from the bottom insulating layer 4, the protective layer 1 is disposed on the side of the second touch metal layer 22 away from the bottom insulating layer 4, and the inkjet printing layer 5 is disposed on the side of the protective layer 1 away from the bottom insulating layer 4; the blocking structure 11 and the blocking groove 12 are disposed in the protective layer 1 of the blocking area B. The second touch metal layer 22 is isolated in the blocking area B, and the protective layer 1 in the blocking area B is in contact with the interlayer insulating layer 3; the interlayer insulating layer 3 in the first main body area A and the second main body area C has through holes 31, the first touch metal layer 21 and the second touch metal layer 22 are electrically connected through the through holes 31, and the second touch metal layer 22 is electrically connected to the source and drain layers 23 through the through holes 31.

[0063] The source-drain layer 23 is embedded in the bottom insulating layer 4 of the second main body region C. The bottom insulating layer 4 in the second main body region C has an opening structure. The first touch metal layer 21 extends into the second main body region C and is cut off at the opening structure. The source-drain layer 23 contacts the interlayer insulating layer 3 at the opening structure. The second touch metal layer is electrically connected to the source-drain electrode through the through hole in the opening structure.

[0064] In this embodiment, the second touch metal layer 22 is isolated in the blocking region B. Therefore, the protective layer 1 and the interlayer insulating layer 3 in the blocking region B are in direct contact, avoiding the problem of metal corrosion caused by the second metal layer 22 being directly exposed to air due to the blocking structure 11 penetrating through the protective layer 1 along its thickness direction in the blocking region B. Since the first touch metal layer 21 and the second touch metal layer 22 are isolated from each other and from the second touch metal layer 22 and the source / drain layer 23 by the interlayer insulating layer 3, through-holes 31 are provided on the interlayer insulating layer 3 so that electrical connections can be achieved between the first touch metal layer 21 and the second touch metal layer 22 and between the second touch metal layer 22 and the source / drain layer 23 through the through-holes 31.

[0065] In some embodiments of this application, such as Figure 4 and Figure 5 As shown, the through-hole 31 includes: a first through-hole 311, a second through-hole 312, and a third through-hole 313; the first through-hole 311 is disposed at the position of the interlayer insulating layer 3 of the first main body region A near the blocking region B; the second through-hole 312 is disposed at the position of the interlayer insulating layer 3 of the second main body region C near the blocking region B; the third through-hole 313 is disposed at the position of the interlayer insulating layer 3 in the open structure, and is located on the side of the second through-hole 312 away from the display area a; the first touch metal layer 21 in the first main body region A and the second touch metal layer 22 in the first main body region A are electrically connected through the first through-hole 311; the first touch metal layer 21 in the second main body region C is electrically connected to the second touch metal layer 22 in the second main body region C through the second through-hole 312, and the second touch metal layer 22 in the second main body region C is electrically connected to the source-drain layer 23 in the second main body region C through the third through-hole 313.

[0066] In this embodiment, the interlayer insulating layer 3 has three through-holes 31: a first through-hole 311, a second through-hole 312, and a third through-hole 313. The first through-hole 311 is located on the side of the interlayer insulating layer 3 in the first main body region A near the blocking region B. The second through-hole 312 is located on the side of the interlayer insulating layer 3 in the second main body region C near the blocking region B. The third through-hole 313 is located on the interlayer insulating layer 3 in the open structure. The second touch metal layer 22 in the first main body region A is electrically connected to the first touch metal layer 21 near the blocking region B through the first through-hole 311. Simultaneously, the second touch metal layer 22 in the second main body region C is electrically connected to the first touch metal layer 21 near the blocking region B through the second through-hole 312, ensuring electrical connection between the first and second touch metal layers 21 and 22. The second touch metal layer 22 in the second main body region C is also electrically connected to the source / drain layer 23 through the third through-hole 313. During this process, the second touch metal layer 22 forms a barrier at the blocking area B, which avoids metal corrosion caused by contact with air while ensuring the electrical connection between circuits.

[0067] In the second embodiment of this application, as Figure 6 and Figure 7 As shown, Figure 6 This is a cross-sectional schematic diagram of the wiring circuit board area of ​​the display module provided in the second embodiment of this application. Figure 7 for Figure 6 A top view of the display module. For ease of observation, Figure 7 The protective layer 1 covering the second touch metal layer 22 on the side away from the bottom insulating layer 4 is not shown.

[0068] The blocking structure 11 of the blocking area B is a cylindrical recessed structure 111. Multiple cylindrical recessed structures 111 are arranged at intervals along the first direction X, forming multiple rows of cylindrical recessed structures 113. The cylindrical recessed structures 111 in adjacent rows of cylindrical recessed structures 113 are staggered along the second direction Y. The length of the cylindrical recessed structure 111 in the first direction is not less than the gap 13 between two adjacent cylindrical recessed structures in the same row of cylindrical recessed structures 113. In two adjacent rows of cylindrical recessed structures 113, the midpoint 141 of one row is collinear with the midpoint 142 of the gap between two adjacent cylindrical recessed structures in the other row.

[0069] In this embodiment, the blocking structure 11 is a columnar recessed structure 111. When the inkjet printing layer 5 flows to the blocking structure 11, a portion of the inkjet printing layer 5 flows into the columnar recessed structure 111 and is blocked and contained by it. Simultaneously, another portion of the inkjet printing layer 5 is blocked by the staggered walls formed by the rows of columnar recesses 113, thereby changing the flow direction and slowing down the flow rate of the inkjet printing layer 5. It can be understood that the staggered arrangement of the columnar recessed structures 111 between adjacent rows of columnar recesses 113 in the second direction Y in this embodiment means that, in the column direction, the columnar recessed structures 111 of one row of columnar recesses 113 are aligned with the gaps in the columnar recessed structures 111 of another row of columnar recesses 113, for example... Figure 7 As shown. Furthermore, a blocking groove 12 is provided on the side of the cylindrical recessed structure 111 near the second main body area C, forming a second layer of protection. This more effectively prevents the liquid coating from overflowing from the inkjet printing layer 5 and flowing into the second main body area C, thus preventing the film layer from arching during the module bending process. Moreover, compared to the drainage groove 112, when the blocking structure 11 adopts the cylindrical recessed structure 111, the strength of the wiring circuit board area b is higher, effectively reducing the possibility of breakage in the blocking area B due to bending in the bending area.

[0070] Simultaneously, as the liquid coating flows in a straight line through the first row of cylindrical recesses 113 and into the second row of cylindrical recesses 113, since the length of the cylindrical recess structure 111 in the first direction is not less than the gap 13 between two adjacent cylindrical recesses in the same row of cylindrical recesses 113; and in two adjacent rows of cylindrical recesses 113, the midpoint 141 of the cylindrical recess structure in one row is collinear with the midpoint 142 of the gap between two adjacent cylindrical recesses in the other row, the liquid coating will inevitably collide with the wall of the cylindrical recess structure 111 in the second row of cylindrical recesses 113, thereby achieving the deceleration and wave-damping effect on the liquid coating.

[0071] In this embodiment, the more cylindrical recessed structures 111 there are, the lower the probability of product overflow risk. The width of the cylindrical recessed structures 111 is 0.5-3 mm. It is understood that since different products have different wiring circuit board areas b, the size of the blocking structure 11 in this application is only an example and is not intended to limit the protection scope of this application. In actual scenarios, the size of the blocking structure 11 can be set according to the actual product size. At the same time, the cylindrical recessed structures 111 can also adopt different shapes, such as triangular or circular cylindrical structures. In actual production, different numbers, widths and shapes can be set according to actual needs, as long as the blocking effect on the inkjet printing layer 5 can be achieved.

[0072] The display module in this embodiment is also applicable to the technical solutions in the foregoing embodiments, and the technical effects achieved are the same, so it will not be elaborated further here.

[0073] This application also provides a method for manufacturing a display module, used to manufacture the display module described in any of the above embodiments. The method includes: obtaining a pre-processed display module, the pre-processed display module including: a bottom insulating layer 4, an interlayer insulating layer 3, a first touch metal layer 21, a second touch metal layer 22, a source-drain layer 23, and a protective layer 1; etching the protective layer 1 in the blocking area B of the trace circuit board area b to form a blocking structure 11 and a blocking groove 12; forming an inkjet printing layer 5 on the side of the protective layer 1 away from the bottom insulating layer 4; and performing subsequent manufacturing processes.

[0074] In this embodiment, a blocking area B with a blocking structure 11 and a blocking groove 12 is formed on the protective layer 1. When the liquid coating passes through the blocking area B, the blocking structure 11 and the blocking groove 12 are used to block and place the liquid, and change the flow direction of the liquid coating to form a double block, thereby slowing down the flow speed of the liquid coating and changing the flow direction, further improving the problem of film layer arching caused by the liquid coating flowing to the second main body area C in the module bending process.

[0075] In some embodiments of this application, the blocking structure 11 of the blocking area B is a cylindrical recessed structure 111. Multiple cylindrical recessed structures 111 are arranged at intervals along the first direction X to form multiple rows of cylindrical recessed rows 113. The cylindrical recessed structures 111 between two adjacent rows of cylindrical recessed rows 113 are staggered in the second direction Y. Alternatively, the blocking structure 11 is a drainage groove 112 that penetrates the sidewall of the protective layer 1 and is arranged along the first direction X; the drainage groove 112 is arc-shaped.

[0076] The cylindrical recessed structure 111 and the drainage groove 112 in this embodiment have the same function as those in the previous embodiment, and will not be described in detail here.

[0077] This application also provides a display device, including the display module described in any of the above embodiments, wherein the Ic pad electrode 7 of the display area a extends to the wiring circuit board area b.

[0078] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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.

[0079] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0080] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A display module, characterized in that, include: Display area and wiring circuit board area; The wiring circuit board area includes a first main area, a blocking area, and a second main area; The first direction of the wiring circuit board area is the direction from the first main body area toward the second main body area; The second direction of the wiring circuit board area is perpendicular to the first direction; The first main body area is located on the side of the wiring circuit board area closer to the display area; the blocking area is located on the side of the first main body area away from the display area; the second main body area is located on the side of the blocking area away from the first main body area. The blocking area includes a blocking structure and a blocking groove. The blocking structure is disposed on the side close to the first main body area, and the blocking groove is disposed on the side of the blocking structure close to the second main body area. The blocking structure and the blocking groove are used to block the inkjet printing layer flowing from the first main body area to the second main body area; The wiring circuit board area also includes: a protective layer, an interlayer insulating layer, a bottom insulating layer, a first touch metal layer, a second touch metal layer, a source-drain layer, and an inkjet printing layer; The first touch metal layer is disposed on one side of the bottom insulating layer, the interlayer insulating layer is disposed on the side of the first touch metal layer away from the bottom insulating layer, the second touch metal layer is disposed on the side of the interlayer insulating layer away from the bottom insulating layer, the protective layer is disposed on the side of the second touch metal layer away from the bottom insulating layer, and the inkjet printing layer is disposed on the side of the protective layer away from the bottom insulating layer. The blocking structure and blocking groove are disposed in the protective layer of the blocking area.

2. The display module according to claim 1, characterized in that, The second touch metal layer is isolated in the blocking area, and the protective layer in the blocking area is in contact with the interlayer insulating layer; The interlayer insulating layer in the first main body region and the second main body region has through holes, the first touch metal layer and the second touch metal layer are electrically connected through the through holes, and the second touch metal layer and the source and drain layers are electrically connected through the through holes.

3. The display module according to claim 2, characterized in that, The source and drain layers are embedded in the bottom insulating layer of the second main body region. The bottom insulating layer in the second main body region has an opening structure. The first touch metal layer extends into the second main body region and is cut off at the opening structure. The source and drain layers contact the interlayer insulating layer at the opening structure. The second touch metal layer is electrically connected to the source and drain through the through hole in the opening structure.

4. The display module according to claim 3, characterized in that, The through hole includes: a first through hole, a second through hole, and a third through hole; The first through-hole is located in the interlayer insulation layer of the first main body area on the side near the blocking area; The second through hole is located in the interlayer insulation layer of the second main body area near the blocking area; The third through hole is located at the position of the interlayer insulating layer in the opening structure, and is located on the side of the second through hole away from the display area; The first touch metal layer in the first main body region is electrically connected to the second touch metal layer in the first main body region through the first through-hole; the first touch metal layer in the second main body region is electrically connected to the second touch metal layer in the second main body region through the second through-hole, and the second touch metal layer in the second main body region is electrically connected to the source and drain layers in the second main body region through the third through-hole.

5. The display module according to claim 1, characterized in that, The blocking structure of the blocking area is a cylindrical recessed structure.

6. The display module according to claim 5, characterized in that, Multiple cylindrical recessed structures are arranged at intervals along a first direction to form multiple rows of cylindrical recessed structures, and the cylindrical recessed structures between two adjacent rows of cylindrical recessed structures are staggered in a second direction.

7. The display module according to claim 6, characterized in that, The length of the cylindrical recessed structure in the first direction is not less than the gap between two adjacent cylindrical recessed structures in the same row of cylindrical recesses. In two adjacent rows of cylindrical recesses, the midline of the cylindrical recess structure in one row is collinear with the midline of the gap between two adjacent cylindrical recess structures in the other row.

8. The display module according to claim 1, characterized in that, The blocking structure is a drainage channel that runs through the sidewall of the protective layer along the first direction; the drainage channel is arc-shaped.

9. The display module according to claim 8, characterized in that, The center of the drainage channel is located in the second main body area.

10. A method for manufacturing a display module according to any one of claims 1-9, characterized in that, include: A pre-processed display module is obtained, the pre-processed display module comprising: a bottom insulating layer, an interlayer insulating layer, a first touch metal layer, a second touch metal layer, a source-drain layer, and a protective layer; The protective layer in the blocking area of ​​the trace circuit board area is etched to form a blocking structure and a blocking groove. An inkjet-printed layer is formed on the side of the protective layer away from the bottom insulating layer; Perform subsequent preparation processes.

11. The preparation method according to claim 10, characterized in that, The blocking structure of the blocking area is a columnar recessed structure. Multiple columnar recessed structures are arranged at intervals along the first direction to form multiple rows of columnar recessed structures. The columnar recessed structures between two adjacent rows of columnar recessed structures are staggered in the second direction.

12. The preparation method according to claim 10, characterized in that, The blocking structure is a drainage channel that runs through the sidewall of the protective layer along the first direction; the drainage channel is arc-shaped.

13. A display device, characterized in that, The display module includes any one of claims 1 to 9.

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