Display module, display device and manufacturing method

Abstract

The application discloses a display module, a display device and a manufacturing method. The display module of one embodiment comprises: an array substrate, the array substrate comprises a first wiring end and a second wiring end located at opposite edge portions of a non-light outcoupling side surface; a first circuit board located on the non-light outcoupling side surface, the first circuit board is located on a side close to the first wiring end; a second circuit board located on the non-light outcoupling side surface, the second circuit board comprises a first connecting portion, a second connecting portion connected with the first wiring end, and a third connecting portion connecting the first connecting portion and the second connecting portion; a connector with a transmission interface, a connecting terminal located at an end portion of the first connecting portion is matched with the transmission interface; and an auxiliary plug-in part, a starting fixed position of the auxiliary plug-in part is located at an edge position of an end portion of the first connecting portion away from the connecting terminal, and an ending fixed position is located at an edge position of a side of the third connecting portion close to the first connecting portion.

Description

Technical Field

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

[0002] For medium and large-sized OLED (organic light-emitting diode) products, such as display products larger than 10 inches, a dual-end routing method with upper and lower routing ends is used. The routing ends of the upper and lower routing ends need to be converged to one side, which may cause problems such as poor insertion or connector damage during assembly. Summary of the Invention

[0003] The purpose of this invention is to provide a display module, a display device, and a manufacturing method to solve at least one of the problems existing in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The first aspect of the present invention provides a display module, the display module comprising:

[0006] An array substrate, the array substrate including a first trace terminal and a second trace terminal located at opposite edges of the non-light-emitting side surface;

[0007] A first circuit board located on the non-light-emitting side surface, the first circuit board being located on the side close to the first trace end;

[0008] The second circuit board located on the non-light-emitting side surface includes a first connecting portion, a second connecting portion connected to the first trace end, and a third connecting portion connecting the first connecting portion and the second connecting portion;

[0009] A connector having a transmission interface, wherein a connection terminal located at the end of the first connection portion is configured to mate with the transmission interface; and

[0010] An auxiliary connector is provided, wherein the initial fixing position of the auxiliary connector is located at the end edge of the first connecting part away from the connecting terminal, and the final fixing position is located at the edge of the third connecting part near the first connecting part.

[0011] Optionally, the auxiliary connector includes:

[0012] A fixing part, the fixing part being located on the surface of the second circuit board away from the non-light-emitting side surface, and the orthographic projection of the end of the fixing part on the non-light-emitting side surface not coinciding with the orthographic projection of the transmission interface on the non-light-emitting side surface; and

[0013] The clamping part located on the side of the fixing part away from the transmission interface gradually increases the distance from the non-light-emitting side surface in the direction from the first trace end to the second trace end.

[0014] Optionally, the second circuit board includes a substrate.

[0015] The first connection portion includes a connection terminal located on a first surface of the substrate, the first surface being close to the non-light-emitting side surface;

[0016] The auxiliary connector is disposed on the second surface of the substrate on the side away from the non-light-emitting side surface;

[0017] The orthographic projection of the end of the connection terminal on the side away from the transmission interface onto the first surface lies within the orthographic projection of the fixing part onto the first surface.

[0018] The orthographic projection of the end of the fixing part near the transmission interface on the first surface lies within the orthographic projection of the connecting terminal on the first surface.

[0019] Optionally, the first connecting portion further includes an auxiliary fixing layer located on the second surface.

[0020] The auxiliary fixing layer is disposed at a position between the two ends of the fixing part and the connecting terminal on the side near the transmission interface, between the orthographic projections of the second surface.

[0021] The top surface of the auxiliary fixing layer away from the second surface and the top surface of the fixing part away from the second surface are located on the same surface.

[0022] Optionally, a first adhesive layer is provided between the fixing part and the second surface, and the first adhesive layer has different adhesiveness under light irradiation of different intensities;

[0023] A second adhesive layer is provided between the auxiliary fixing layer and the second surface, and the material of the second adhesive layer is different from that of the first adhesive layer.

[0024] Optionally, the second connecting portion extends along the first direction.

[0025] The third connecting portion extends along a second direction intersecting the first direction.

[0026] The number of the first connecting parts is multiple, and the third connecting part includes sub-extended connecting parts that correspond one-to-one with the first connecting parts. The orthographic projections of each sub-extended connecting part on the non-light-emitting side surface do not overlap.

[0027] Optionally, the sub-extension connection includes:

[0028] The connection area connected to the first connection part, wherein the orthographic projection of the connection area on the non-light-emitting side surface includes a rectangular projection;

[0029] The extension area connected to the connection area has a plurality of bent projections in its orthographic projection onto the non-light-emitting side surface.

[0030] Optionally, the second connection portion includes a bonding metal wire bonded to the first trace end, and first shielding layers respectively disposed on the bonding metal wire near the non-light-emitting side surface and away from the non-light-emitting side surface;

[0031] The sub-extension connection includes:

[0032] A signal transmission line, one end of which is connected to the connection terminal, and the other end of which is connected to the bonding metal wire; the orthographic projection of the signal transmission line onto the non-light-emitting side surface includes a mesh structure; and

[0033] A second shielding layer is disposed on the side of the signal transmission line that is close to or away from the non-light-emitting side surface.

[0034] Optionally, the first circuit board includes alignment portions disposed on a surface away from the non-light-emitting side surface, the alignment portions corresponding one-to-one with the sub-extension connection portions.

[0035] The projection boundary of the first connecting part on the non-light-emitting side surface and the projection boundary of the alignment part on the non-light-emitting side surface at least partially overlap.

[0036] Optionally, the orthographic projection of the sub-extension connection on the non-light-emitting side surface is offset from the center line of the orthographic projection of the first connection on the non-light-emitting side surface, and the center line is parallel to the second direction.

[0037] A second aspect of the present invention provides a display device, including the display module described in the first aspect of the present invention.

[0038] A third aspect of the present invention provides a method for manufacturing the display module described in the first aspect of the present invention, the method further comprising:

[0039] Bind the first circuit board and the first trace end;

[0040] Bind the second connection part and the second trace end of the second circuit board;

[0041] The connecting terminals of the first connecting part are inserted into the transmission interface of the connector using an auxiliary connector.

[0042] Optionally, the method further includes:

[0043] The display module was subjected to electrical testing;

[0044] The clamping portion of the auxiliary connector is irradiated with ultraviolet light, and then the auxiliary connector is removed.

[0045] The beneficial effects of this invention are as follows:

[0046] In this embodiment of the invention, the auxiliary connector is designed to be fixed at a position on the second circuit board near the first trace end (i.e., at a position fixed to a portion of the first connection part and a portion of the third connection part). The auxiliary connector is used for insertion to reduce the proportion of poor insertion, lower the risk of poor device insertion, and improve product yield. Attached Figure Description

[0047] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0048] Figure 1 This invention illustrates the structural design of a display module with dual-sided wiring terminals according to an embodiment of the present invention;

[0049] Figure 2 This diagram illustrates an assembly schematic of a display module near the first trace end according to an embodiment of the present invention.

[0050] Figure 3 Show Figure 2 A top view of the structure at the indicated location;

[0051] Figure 4 Show Figure 2 A schematic diagram of the layer structure at the location shown;

[0052] Figure 5 This diagram illustrates the structure of a first circuit board according to an optional embodiment of the present invention.

[0053] Figure 6 This diagram illustrates the structure of a first circuit board according to an optional embodiment of the present invention.

[0054] Figure 7 A schematic diagram of the structure corresponding to the first connection portion of the first circuit board according to an embodiment of the present invention is shown.

[0055] Figure 8 A schematic diagram of the structure of a display module related to the technology is shown. Detailed Implementation

[0056] To more clearly illustrate the present invention, the following description, in conjunction with embodiments and accompanying drawings, further explains the invention. Similar components in the drawings are indicated by the same reference numerals. Those skilled in the art should understand that the specific description below is illustrative rather than restrictive and should not be construed as limiting the scope of protection of the present invention.

[0057] Figure 8 The display module with dual-sided trace design shown in the related technology requires the upper traces of the top and bottom output products to converge onto the first circuit board 11 for unified signal processing and output. For example, as... Figure 8 As shown, the second wiring terminal 132 is connected to the first circuit board 11 through the second circuit board 12. The second circuit board 12 is generally connected and fixed to the first circuit board 11 using a ZIF (zero insertion force) connector 15.

[0058] Since there are generally many signal lines on the upper side of the display module, multiple ZIF connectors are required. The second wiring end 132 is for binding and fixing, and adhesive backing is usually added for fixing. The insertion end position of the first wiring end 131 is fixed. Therefore, since both the upper output end and the lower receiving end are fixed on the product, the insertion process is difficult to operate and is very easy to cause insufficient insertion or damage to the connector.

[0059] Therefore, embodiments of the present invention provide a display module, a display device, and a manufacturing method to solve the above-mentioned problems.

[0060] like Figures 1 to 7 As shown, the first embodiment of the present invention proposes a display module, the display module 10 comprising:

[0061] The array substrate 13 includes a first trace terminal 131 and a second trace terminal 132 located on opposite sides of the non-light-emitting side surface.

[0062] The first circuit board 11 is located on the non-light-emitting side surface, and the first circuit board 11 is located on the side close to the first trace end 131;

[0063] The second circuit board 12 is located on the non-light-emitting side surface. The second circuit board 12 includes a first connection portion 121 connected to the first trace end 131, a second connection portion 122 connected to the second trace end 132, and a third connection portion 123 connecting the first connection portion 121 and the second connection portion 122.

[0064] A connector 14 having a transmission interface 141, wherein a connection terminal 1211 located at the end of the first connection portion 121 is configured to mate with the transmission interface 141; and

[0065] The auxiliary connector 15 has its initial fixing position located at the end edge of the first connecting portion 121 away from the connecting terminal 1211, and its final fixing position located at the edge of the third connecting portion 123 near the first connecting portion 121. In a specific example, the auxiliary connector 15 is located at the junction of the first connecting portion 121 and the third connecting portion 123, that is, partially located in the first connecting portion 121 and partially located in the third connecting portion 123. It has a certain strength, facilitates handling during assembly, and avoids damage to the second circuit board 12.

[0066] In this embodiment of the invention, the auxiliary connector 15 is designed to be fixed at a position on the second circuit board 12 near the first trace end 131 (i.e., at a position fixed to a portion of the first connection portion 121 and a portion of the third connection portion 123). The auxiliary connector 15 is used for insertion to reduce the proportion of poor insertion, reduce the risk of poor device insertion, and improve product yield.

[0067] The display module of this invention is applied to medium-to-large-sized touch display products, such as those larger than 10 inches. The larger the size of the display module, the higher the resolution requirement, and the more pins of the display driver need to be bonded. Furthermore, for display modules integrating touch functionality, the number of touch pins for transmitting touch signals and display pins for transmitting drive signals further increases, increasing the probability of bonding process defects.

[0068] In an optional embodiment, the first trace terminal 131 includes a display pin connected to a display trace for transmitting display driving signals, and the second trace terminal 132 includes a touch pin connected to a touch trace for transmitting touch driving signals. This embodiment, by configuring the display module to have both the second trace terminal 132 and the first trace terminal 131 as common exit points, and distributing touch pins and driving pins with different functions across the trace terminals on both sides, mitigates the risk of poor bonding caused by a large number of pins required for the trace terminals in touch display products, further improving the manufacturing yield of the display product.

[0069] In one optional embodiment, the first circuit board 11 is a display driver board and the second circuit board 12 is a touch driver board. In one specific example, the second circuit board 12 is a flexible circuit board, i.e., an FPC, which has good bending performance and facilitates wiring between the first wiring end 131 and the second wiring end 132 through the third connection part 123. In another example, the first circuit board 11 is a rigid circuit board, which makes the circuit structure formed on the first circuit board more stable.

[0070] In an optional embodiment of the present invention, the first circuit board 11 is connected to the first trace terminal 131 by bonding with a third circuit board 16. The third circuit board 16 includes a plurality of bonding portions respectively bonded to the third circuit board, and each bonding portion is provided with a display driver chip fixed on the third circuit board 16 using COF (Chip On Film) technology for outputting display driving signals. Exemplarily, the third circuit board is a flexible circuit board with good bending performance.

[0071] In an optional embodiment, both the first trace terminal 131 and the second trace terminal 132 include power pins connected to power signal lines that transmit power signals (ELVSS / ELVDD). This configuration enables dual-sided power signal transmission, which can increase the display uniformity of the display module. Under high brightness conditions, the brightness uniformity (LRU) can be improved by 3%.

[0072] In another optional embodiment, the first trace terminal 131 also includes a touch pin connected to the touch trace that transmits the touch driving signal. That is, the first trace terminal 131 can also transmit the touch signal, thereby realizing the dual-sided transmission of the touch signal through the second trace terminal 132 and the first trace terminal 131. This setting can reduce the impedance of the touch trace and greatly improve the touch performance of the product.

[0073] like Figure 1 As shown, the second circuit board 12 includes three structures. The second connecting part 122 of this embodiment extends laterally along the first direction. The first connecting part 121 is a plug-in area connected to the transmission interface 141. Since the first connecting part 121 and the second connecting part 122 are located at the upper and lower ends respectively, this embodiment uses the third connecting part 123 extending along the second direction intersecting the first direction for wiring design. The overall second circuit board 12 has an L-shaped structure, realizing the convergence of the wiring at both the upper and lower ends.

[0074] In an optional embodiment, such as Figures 2-4 As shown, the auxiliary connector 15 includes a fixing part 151 and a clamping part 152, and the second circuit board 12 includes a base 124.

[0075] The first connection portion 121 includes a connection terminal 1211 located on the first surface of the substrate 124. The first surface is close to the non-light-emitting side surface. That is, in this embodiment of the invention, the connection terminal 1211 of the first connection portion 121 is closer to the non-light-emitting side surface than the substrate 124, so as to protect the connection terminal 1211.

[0076] In an optional embodiment, the fixing part 151 is located on the surface of the second circuit board 12 away from the non-light-emitting side surface. In one embodiment, the auxiliary connector 15 is disposed on the second surface of the substrate 124 away from the non-light-emitting side surface, such as... Figure 4 As shown, in the stacking direction, the fixing part 151 is located above the first connecting part 121 and the third connecting part 123 of the second circuit board 12. From the light-emitting surface to the non-light-emitting surface, each structure includes: a connecting terminal 1211, a substrate 124, and an auxiliary connector 15. This arrangement makes it easier to handle the auxiliary connector 15 during assembly and protects the connecting terminal 1211.

[0077] In an optional embodiment, the orthographic projection of the end of the fixing part 151 on the non-light-emitting side surface does not coincide with the orthographic projection of the transmission interface 141 on the non-light-emitting side surface. In terms of projection relationship, the end of the fixing part 151 is a certain distance from the connecting terminal 1211 to avoid the fixing part 151 affecting the insertion when the connecting terminal 1211 and the transmission interface 141 are inserted.

[0078] In an optional embodiment, such as Figure 4 As shown, the orthographic projection of the end of the connecting terminal 1211 on the side away from the transmission interface 141 onto the first surface lies within the orthographic projection of the fixing part 151 onto the first surface, and the orthographic projection of the end of the fixing part 151 on the side closer to the transmission interface 141 onto the first surface lies within the orthographic projection of the connecting terminal 1211 onto the first surface. That is, in terms of projection relationship, the connecting terminal 1211 and the fixing part 151 on the side away from the transmission interface 141 in this embodiment of the invention form an overlapping relationship, as shown... Figure 4 As shown, the fixing part 151 not only covers the connecting terminal 1211 of the part, but also covers the third connecting part 123 of the part. With this arrangement, the fixing part 151 is fixed to the connecting parts of the two areas, and has a certain connection strength, which facilitates handling during the assembly process and avoids damage to the second circuit board 12.

[0079] Optionally, in one embodiment, the clamping portion 152 is located on the side of the fixing portion 151 away from the transmission interface 141, and the distance of the clamping portion 152 from the non-light-emitting side surface gradually increases in the direction from the first trace end 131 to the second trace end 132. For example... Figure 4 As shown, the clamping part 152 has an upward tilting structure, which makes it easy to pick up and improves assembly efficiency.

[0080] like Figures 2 to 4As shown, the auxiliary connector 15 of this embodiment of the invention is a contour-following design. Its orthographic projection on the non-light-emitting side surface is similar to or the same as the orthographic projection of the first connecting portion 121 or the third connecting portion 123 on the non-light-emitting side surface at the corresponding position, so as to protect the first connecting portion 121 and the third connecting portion 123 at the corresponding position by means of the auxiliary connector 15.

[0081] In an optional embodiment, such as Figure 4 As shown, the first connecting portion 121 further includes an auxiliary fixing layer 1212 located on the second surface. The auxiliary fixing layer 1212 is disposed between the orthographic projection of the two ends of the fixing portion 151 and the connecting terminal 1211 on the side near the transmission interface 141 on the second surface. In this embodiment, the ends of the fixing portion 151 and the connecting terminal 1211 facing the transmission interface 141 are not aligned to avoid the fixing portion 151 affecting the insertion of the connecting terminal 1211 and the transmission interface 141.

[0082] Since an auxiliary fixing layer 1212 is provided on the connection terminal 1211, in order to avoid the thickness of the auxiliary fixing layer 1212 affecting the insertion of the connection terminal 1211 and the transmission interface 141, the distance between the surface of the auxiliary fixing layer 1212 away from the substrate 124 and the surface of the connection terminal 1211 away from the substrate 124 is less than the diameter height of the transmission interface 141, so as to ensure the insertion performance.

[0083] In an optional embodiment, the top surface of the auxiliary fixing layer 1212 away from the second surface and the top surface of the fixing part 151 away from the second surface are located on the same surface. The auxiliary fixing layer 1212 is used to compensate for the discontinuity position between the connecting terminal 1211 and the fixing part 151. To ensure the stability of the overall structure, the top surfaces of the auxiliary fixing layer and the fixing part 151 are located on the same horizontal plane.

[0084] In an optional embodiment, such as Figure 4 As shown, a first adhesive layer 1213 is provided between the fixing part 151 and the second surface. The first adhesive layer 1213 has different adhesiveness under different intensities of light. With this setting, after the connecting terminal 1211 of the first connecting part 121 is inserted into the transmission interface 141 using the auxiliary plug 15 and the whole machine is assembled, the light-changing characteristics of the first adhesive layer 1213 can be used to irradiate the position of the first adhesive layer 1213 of the fixing part 151 to release the adhesiveness.

[0085] In a specific example, UV light is used to irradiate the fixing part 151 and the attachment position of the second surface of the auxiliary connector 15, so that the viscosity of the first adhesive layer 1213 at the attachment position is reduced and loses its stickiness. For example, the viscosity of the first adhesive layer 1213 before irradiation is ≥2000gf / inch, and after UV irradiation, the viscosity of the first adhesive layer 1213 is ≤10gf / inch, so that the auxiliary connector 15 can be removed from the first connecting part 121, thereby saving space in the assembly of the whole machine.

[0086] Optionally, in this embodiment, a second adhesive layer 1214 is provided between the auxiliary fixing layer 1212 and the second surface. The second adhesive layer 1214 is made of a different material than the first adhesive layer 1213. Based on the aforementioned design of the auxiliary fixing layer 1212, in this embodiment, the auxiliary fixing layer 1212 and the second surface are bonded and fixed with a film layer different from the first adhesive layer 1213. The adhesiveness of the first adhesive layer 1213 in this embodiment has photosensitive properties, while the second adhesiveness does not. This avoids protecting the auxiliary fixing layer 1212, which has already been inserted into the transmission interface 141, during the process of using ultraviolet light to irradiate the fixing part 151 to reduce adhesiveness and remove the auxiliary connector 15. This invention designs the auxiliary connector 15 based on the display module 10 of the aforementioned embodiment, reducing poor insertion and improving assembly yield. Optionally, this embodiment also designs the structure of the second circuit board 12.

[0087] In an optional embodiment, such as Figure 5 and Figure 6 As shown, the second circuit board 12 includes a first connection portion 121 connected to the first trace terminal 131, a second connection portion 122 connected to the second trace terminal 132, and a third connection portion 123 connecting the first connection portion 121 and the second connection portion 122; as Figure 5 and Figure 6 As shown, the second connecting part 122 is bound to the upper second wiring end 132, and the second connecting part 122 extends laterally along the first direction.

[0088] In an optional embodiment, the second connection portion 122 includes a bonding metal wire (not shown) bonded to the first trace end 131, and first shielding layers (not shown) respectively disposed on the bonding metal wire near the non-light-emitting side surface and away from the non-light-emitting side surface. That is, in the stacking direction, the second connection portion 122 of this embodiment includes a first shielding layer, a bonding metal wire, and another first shielding layer from bottom to top. By setting up a double shielding layer, the signal shielding performance at the second connection portion 122 can be increased. In a specific example, the first shielding layer includes materials such as polyimide or polyester film.

[0089] Optionally, in this embodiment of the invention, the third connecting portion 123 is designed to extend along a second direction intersecting the first direction, for example... Figure 6 The vertical extension shown connects the first connecting portion 121 located on the lower side and the second connecting portion 122 located on the upper side.

[0090] In an optional embodiment, such as Figure 1 As shown, there are multiple first connecting portions 121, and the third connecting portion 123 includes fewer sub-extended connecting portions 1231 than the number of first connecting portions 121, for example, Figure 1 As shown, there are two first connecting portions 121 and one sub-extension connecting portion 1231. In an optional embodiment of the present invention, the ends of at least two of the plurality of first connecting portions 121 located away from the first circuit board are connected to the same sub-extension connecting portion 1231, for example, as shown in the figure. Figure 1 As shown, one end of each of the two first connecting parts 121 is connected to a different connector 15, while the other end is connected to the same sub-extension connecting part 1231. This arrangement reduces the risk of poor insertion of each first connecting part.

[0091] It is worth noting that the embodiments of the present invention Figure 1 The number of first connecting portions, the number of sub-extended connecting portions of the third connecting portion, and the number of first connecting portions connected to each sub-extended portion shown are illustrative examples. Those skilled in the art can design according to actual applications.

[0092] In another alternative embodiment, such as Figure 5 As shown, there are multiple first connecting portions 121, and the third connecting portion 123 includes sub-extended connecting portions 1231 that correspond one-to-one with the first connecting portions 121. The orthographic projections of each sub-extended connecting portion 1231 on the non-light-emitting side surface do not overlap.

[0093] In other words, such as Figure 5 As shown, the third connecting part 123 in this embodiment of the invention has a forked structure. Each sub-extended connecting part 1231 extends from the second connecting part 122, and each first connecting part 121 and each sub-extended connecting part 1231 are connected one by one to form multiple plug-in areas. That is, under this design, multiple transmission interfaces 141 are provided along the first direction, and each transmission interface 141 corresponds one-to-one with the first connecting part 121 to realize independent plug-in in the wiring design.

[0094] In an optional embodiment, such as Figure 6As shown, the sub-extension connection portion 1231 includes a connection area 12311 connected to the first connection portion 121 and an extension area 12312 connected to the connection area 12311.

[0095] In this embodiment, the orthographic projection of the extension region 12312 on the non-light-emitting side surface includes multiple bent projections. The structure of the bent projections at the bent positions includes arc-shaped, linear, or hybrid structures composed of arc-shaped and linear structures. For example, Figure 6 As shown, the multiple bends of the sub-extension connecting part 1231 on the non-light-emitting side surface are all arc-shaped structures at the bends, and the multiple bends are connected in sequence, extending in the second direction to form a continuous wave-shaped structure.

[0096] In another example, multiple folded projections can also be linear structures at the bends, such as the shape of "<". In this structure, the folded projection is two line segment projections with a certain angle, and multiple line segment projections are connected in sequence, extending in the second direction to form a continuous folded structure.

[0097] In another embodiment, the multiple folded projections can also be a hybrid structure of folded projections with an arc shape and folded projections with an included angle. When the folded projection is as follows... Figure 6 When the curved structure is shown, the curvature of the bending projection is determined by those skilled in the art based on the actual application. When the bending projection is a line segment structure with an angle, the angle of the bending projection is determined by those skilled in the art based on the actual application, and will not be elaborated here.

[0098] Considering the precision errors in the manufacturing process of the display module 10, such as the bending Y-axis tolerance of the second connecting part 122 on the upper and lower sides, the Y-axis tolerance of the upper and lower side bonding, and the Y-axis tolerance of the shape of the second circuit board 12, by setting the extension area 12312 to include multiple bending projections, the redundancy of the first connecting part 121 and the transmission break can be increased, and the poor insertion caused by the processing error can be improved.

[0099] In an optional embodiment, the sub-extension connection portion 1231 includes a signal transmission line (not shown) and a second shielding layer (not shown). In this embodiment, one end of the signal transmission line is connected to the connection terminal 1211 to achieve signal transmission with the first trace terminal 131, and the other end is connected to the bonding metal wire 1221 of the second connection portion 122 to achieve signal transmission with the second trace terminal 132. The orthographic projection of the signal transmission line on the non-light-emitting side surface includes a grid structure, and the second shielding layer is disposed on the side of the signal transmission line near or away from the non-light-emitting side surface. This embodiment of the invention combines signal shielding functionality by setting the extension region 12312 as a single-sided shielding layer structure and the signal transmission line as a grid structure, and also increases the flexibility of the extension region 12312 and increases redundant deformation.

[0100] Optional, such as Figure 6 As shown, this embodiment also designs the connection area 12311. The orthographic projection of the connection area 12311 on the non-light-emitting side surface includes a rectangular projection. That is, based on the bending extension design of the extension area 12312 in the second direction, the connection area 12311 connected to the connection terminal 1211 is set to be perpendicular to the first circuit board 11 so as to facilitate the insertion of the transmission interface 141 of the connector 14 and the connection terminal 1211.

[0101] It is worth noting that, such as Figure 1 As shown, when there are multiple first connecting parts 121, there are also multiple connectors 14. The position of the connectors 14 is set to correspond to the first connecting parts 121 to improve the insertion performance.

[0102] Optionally, in this embodiment, the first connecting portion 121 is connected to the lower first trace end 131. The first connecting portion 121 is a plug-in area connected to the transmission interface 141. To further ensure plug-in yield, in an optional embodiment, such as... Figure 3 and Figure 7 As shown, the first circuit board 11 includes an alignment portion 112 disposed on a surface away from the non-light-emitting side surface. The alignment portion 112 corresponds one-to-one with the sub-extension connection portion 1231. The projection boundary of the orthographic projection of the first connection portion 121 on the non-light-emitting side surface and the projection boundary of the orthographic projection of the alignment portion 112 on the non-light-emitting side surface at least partially overlap.

[0103] In this embodiment, an external alignment structure is designed on the first circuit board 11. By matching the alignment part 112 and the first connecting part 121, it is possible to quickly determine whether the insertion is complete.

[0104] Compared to the alignment part 112 formed by the screen printing alignment process, this process will accumulate the tolerance between the shape of the first circuit board 11 and the screen printing position, and its process accuracy is about 0.15mm. The alignment part 112 design in this embodiment has higher screen printing accuracy than the related technology. For example, the alignment part 112 can be made by etching process, which has an etching accuracy of less than 0.01mm, which is more accurate and makes the insertion matching effect better.

[0105] In an optional embodiment, such as Figure 7 As shown, the orthographic projection of the sub-extension connection 1231 on the non-light-emitting side surface is offset from the center line of the orthographic projection of the first connection 121 on the non-light-emitting side surface, and the center line is parallel to the second direction.

[0106] In this embodiment, based on the design of the connection area 12311 as a straight boundary, the position of the connection area 12311 connected to the first connection part 121 is designed as an eccentric structure. That is, the connection area 12311 is not set at the center of the first connection part 121, but is close to one side, so that the distribution of the signal transmission lines 12313 connected to the connection terminal 1211 is more concentrated, reducing the space occupied by the second connection part 122.

[0107] In an optional embodiment, the connecting terminal 1211 includes a first terminal 12111 and a second terminal 12112 arranged alternately along a first direction. The first terminal 12111 and the second terminal 12112 have different lengths in the second direction. The ends of the first terminal 12111 and the second terminal 12112 near the second connecting portion 122 are both located on the same straight line. Through the structural design of the staggered arrangement of the first terminal 12111 and the second terminal 12112, the size of the connecting area 12311 in the first direction is reduced, and the size of the connector 14 in the first direction is further reduced, thereby saving the space occupied by the first connecting portion 121 and the connector 14.

[0108] Another embodiment of the present invention provides a display device, which includes the display module 10 of the above embodiments of the present invention. The display device can be any product or component with display function, such as electronic paper, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, navigator, etc., and this embodiment does not limit it.

[0109] Another embodiment of the present invention provides a method for manufacturing the display module 10 of the above embodiments, the method further comprising:

[0110] Bind the first circuit board 11 and the first trace terminal 131;

[0111] Bind the second connection portion 122 and the second trace end 132 of the second circuit board 12;

[0112] The connecting terminal of the first connecting part 121 is inserted into the transmission interface 141 of the connector 14 using the auxiliary plug 15.

[0113] Based on the aforementioned embodiments, during the assembly process, auxiliary connectors 15 are used for insertion to reduce the proportion of defective insertions, lower the risk of defective device insertions, and improve product yield.

[0114] In an optional embodiment, based on the foregoing embodiments, the auxiliary connector 15 further includes a fixing portion 151 and a clamping portion 152, wherein a first station layer with photosensitive adhesive properties is provided at the position of the clamping portion 152, and the method further includes:

[0115] The display module 10 was subjected to electrical testing;

[0116] By irradiating the clamping portion 152 of the auxiliary connector 15 with ultraviolet light and removing the auxiliary connector 15, the space occupied by the auxiliary connector 15 on the first circuit board 11 is reduced.

[0117] It is worth noting that specific embodiments of the manufacturing method of the display module in this invention can be found in the display module of the foregoing embodiments, and will not be repeated here.

[0118] In the description of this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying 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 limitation, 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.

[0119] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A display module, characterized in that, The display module includes: An array substrate, the array substrate including a first trace terminal and a second trace terminal located at opposite edges of the non-light-emitting side surface; A first circuit board located on the non-light-emitting side surface, the first circuit board being located on the side close to the first trace end; The second circuit board located on the non-light-emitting side surface includes a first connecting portion, a second connecting portion connected to the first trace end, and a third connecting portion connecting the first connecting portion and the second connecting portion; A connector having a transmission interface, wherein a connection terminal located at the end of the first connection portion is configured to mate with the transmission interface; and An auxiliary connector, wherein the initial fixing position of the auxiliary connector is located at the end edge of the first connecting part away from the connecting terminal, and the final fixing position is located at the edge of the third connecting part close to the first connecting part. Both the first and second trace terminals include power pins that connect to power signal lines that transmit power signals.

2. The display module according to claim 1, characterized in that, The auxiliary connector includes: A fixing part, the fixing part being located on the surface of the second circuit board away from the non-light-emitting side surface, and the orthographic projection of the end of the fixing part on the non-light-emitting side surface not coinciding with the orthographic projection of the transmission interface on the non-light-emitting side surface; and The clamping part located on the side of the fixing part away from the transmission interface gradually increases the distance from the non-light-emitting side surface in the direction from the first trace end to the second trace end.

3. The display module according to claim 2, characterized in that, The second circuit board includes a substrate, The first connection portion includes a connection terminal located on a first surface of the substrate, the first surface being close to the non-light-emitting side surface; The auxiliary connector is disposed on the second surface of the substrate on the side away from the non-light-emitting side surface; The orthographic projection of the end of the connection terminal on the side away from the transmission interface onto the first surface lies within the orthographic projection of the fixing part onto the first surface. The orthographic projection of the end of the fixing part near the transmission interface on the first surface lies within the orthographic projection of the connecting terminal on the first surface.

4. The display module according to claim 3, characterized in that, The first connecting portion further includes an auxiliary fixing layer located on the second surface. The auxiliary fixing layer is disposed at a position between the two ends of the fixing part and the connecting terminal on the side near the transmission interface, between the orthographic projections of the second surface. The top surface of the auxiliary fixing layer away from the second surface and the top surface of the fixing part away from the second surface are located on the same surface.

5. The display module according to claim 4, characterized in that, A first adhesive layer is provided between the fixing part and the second surface, and the first adhesive layer has different adhesiveness under different intensities of light irradiation; A second adhesive layer is provided between the auxiliary fixing layer and the second surface, and the material of the second adhesive layer is different from that of the first adhesive layer.

6. The display module according to claim 1, characterized in that, The second connecting portion extends along the first direction. The third connecting portion extends along a second direction intersecting the first direction. The number of the first connecting parts is multiple, and the third connecting part includes sub-extended connecting parts that correspond one-to-one with the first connecting parts. The orthographic projections of each sub-extended connecting part on the non-light-emitting side surface do not overlap.

7. The display module according to claim 6, characterized in that, The sub-extension connection includes: The connection area connected to the first connection part, wherein the orthographic projection of the connection area on the non-light-emitting side surface includes a rectangular projection; The extension area connected to the connection area has a plurality of bent projections in its orthographic projection onto the non-light-emitting side surface.

8. The display module according to claim 6, characterized in that, The second connection portion includes a bonding metal wire bonded to the first trace end, and first shielding layers respectively disposed on the bonding metal wire near the non-light-emitting side surface and away from the non-light-emitting side surface; The sub-extension connection includes: A signal transmission line, one end of which is connected to the connection terminal, and the other end of which is connected to the bonding metal wire; the orthographic projection of the signal transmission line onto the non-light-emitting side surface includes a mesh structure; and A second shielding layer is disposed on the side of the signal transmission line that is close to or away from the non-light-emitting side surface.

9. The display module according to claim 6, characterized in that, The first circuit board includes alignment portions disposed on a surface away from the non-light-emitting side surface, and the alignment portions correspond one-to-one with the sub-extension connection portions. The projection boundary of the first connecting part on the non-light-emitting side surface and the projection boundary of the alignment part on the non-light-emitting side surface at least partially overlap.

10. The display module according to claim 6, characterized in that, The orthographic projection of the sub-extension connection on the non-light-emitting side surface is offset from the center line of the orthographic projection of the first connection on the non-light-emitting side surface, and the center line is parallel to the second direction.

11. A display device, characterized in that, The display device includes the display module as described in any one of claims 1 to 10.

12. A method for manufacturing a display module according to any one of claims 1 to 10, characterized in that, The method further includes: Bind the first circuit board and the first trace end; Bind the second connection part and the second trace end of the second circuit board; The connecting terminals of the first connecting part are inserted into the transmission interface of the connector using an auxiliary connector.

13. The method according to claim 12, characterized in that, The method further includes: The display module was subjected to electrical testing; The clamping portion of the auxiliary connector is irradiated with ultraviolet light, and then the auxiliary connector is removed.

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