Flexible adhesive tape and display module

Abstract

The application provides a flexible adhesive tape and a display module; the flexible adhesive tape is connected with a first terminal and a second terminal through a metal wire, and the flexible adhesive tape can protect the metal wire and the terminals, without needing to set a side sealing glue, thereby improving the preparation efficiency of the display module; and by making the first line width less than the difference between the second line distance and the alignment deviation, and the first line distance less than the difference between the second line width and the alignment deviation, even if the metal wire deviates, the metal wire cannot be connected with two first terminals, the metal wire cannot be connected with two second terminals, and the metal wire cannot be connected with the first terminal and the second terminal which do not correspond, so that short circuit between adjacent first terminals and second terminals can be avoided, and when the metal wire deviates, at least one metal wire can be connected with the first terminal and the second terminal, so that the first terminal and the second terminal can be normally connected, the display module can work normally, and the yield of the display module is improved.

Description

Technical Field

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

[0002] Mini-LED (sub-millimeter light-emitting diode) and micro-LED (micro-light-emitting diode) display devices are widely used due to their advantages such as self-illumination, high brightness, high contrast, high resolution and color saturation, long lifespan, fast response speed, and low power consumption. To achieve seamless splicing, existing glass-based Mini-LED and micro-LED display panels typically employ back-binding technology to reduce the splicing width. Specifically, connection terminals are placed on both sides of the glass substrate, and then front, side, and back conductors are used to connect these terminals. However, the front, side, and back conductors of existing display devices require three etching processes, which are complex. Furthermore, during the laser etching of the side conductors, insufficient alignment accuracy can cause misalignment, resulting in short circuits between adjacent front and back conductors connected by the side conductors, thus affecting the yield of the display device.

[0003] Therefore, existing display devices suffer from technical problems such as complex side conductor manufacturing processes and insufficient alignment accuracy of side conductors leading to short circuits between adjacent conductors. Summary of the Invention

[0004] This application provides a flexible tape and a display module to solve the technical problems of complex side conductor manufacturing processes and insufficient alignment accuracy of side conductors in existing display devices, which leads to short circuits between adjacent conductors.

[0005] This application embodiment provides a flexible tape for connecting a first terminal on a first surface and a second terminal on a second surface of a display panel that are disposed opposite to each other. The flexible tape includes:

[0006] Flexible substrate;

[0007] Metal traces are disposed on one side of the flexible substrate, and at least a portion of the metal traces are used to connect the first terminal and the second terminal;

[0008] Wherein, the maximum line width of the metal trace is the first line width, the maximum line spacing between two adjacent metal traces is the first line spacing, the minimum line width of the first terminal is the second line width, the minimum line spacing of the first terminal is the second line spacing, there is a misalignment between the first terminal and the second terminal, the first line width is less than the difference between the second line spacing and the misalignment, and the first line spacing is less than the difference between the second line width and the misalignment.

[0009] In some embodiments, any two metal traces have the same line width, and any two adjacent metal traces have the same line spacing.

[0010] In some embodiments, the flexible tape further includes a water-blocking layer disposed between the flexible substrate and the metal trace, or the water-blocking layer is disposed on the side of the flexible substrate away from the metal trace.

[0011] Meanwhile, this application provides a display module, which includes a flexible tape and a display panel as described in any of the above embodiments;

[0012] The display panel includes a substrate, a first terminal, and a second terminal. The substrate includes a first surface and a second surface disposed opposite to each other, and a side surface connecting the first surface and the second surface. The first terminal is disposed on the first surface of the substrate, and the second terminal is disposed on the second surface of the substrate. The second terminal is disposed corresponding to the first terminal.

[0013] The flexible tape is disposed along the first surface, the side surface to the second surface, and the metal traces are disposed on the side of the flexible substrate close to the substrate, and at least a portion of the metal traces connect the first terminal and the second terminal;

[0014] On the first surface side, the metal trace is disposed between the first terminal and the flexible substrate; on the second surface side, the metal trace is disposed between the second terminal and the flexible substrate.

[0015] In some embodiments, the alignment deviation between the first terminal and the second terminal is 0, and the projection of the first terminal on the substrate coincides with the projection of the second terminal on the substrate.

[0016] In some embodiments, a portion of the metal traces are insulated from the first terminal, and the metal traces insulated from the first terminal are insulated from the second terminal.

[0017] In some embodiments, the metal trace includes a first metal trace, the contact area between the first metal trace and the first terminal is equal to the product of the linewidth of the first metal trace and the line length of the first terminal, and the contact area between the first metal trace and the second terminal is less than or equal to the product of the linewidth of the first metal trace and the line length of the second terminal; and / or the metal trace includes a second metal trace, the contact area between the second metal trace and the first terminal is less than the product of the linewidth of the second metal trace and the line length of the first terminal, and the contact area between the second metal trace and the second terminal is less than the product of the linewidth of the second metal trace and the line length of the second terminal.

[0018] In some embodiments, the first terminal includes a first sub-terminal and a second sub-terminal;

[0019] The second terminal includes a third sub-terminal and a fourth sub-terminal, wherein the third sub-terminal is configured corresponding to the first sub-terminal and the fourth sub-terminal is configured corresponding to the second terminal;

[0020] Wherein, the line width of the first sub-terminal is equal to the line width of the third sub-terminal, the line width of the second sub-terminal is equal to the line width of the fourth sub-terminal, the line width of the second sub-terminal is greater than the line width of the first sub-terminal, and the number of metal traces connecting the first sub-terminal and the third sub-terminal is less than or equal to the number of metal traces connecting the second sub-terminal and the fourth sub-terminal.

[0021] In some embodiments, the line width of the first sub-terminal is less than the sum of the line width of the corresponding metal trace and the line spacing of the corresponding metal trace, and the first sub-terminal is connected to the third sub-terminal through a metal trace; and / or the line width of the second sub-terminal is greater than twice the line width of the corresponding metal trace and the sum of the line spacing of the corresponding metal trace, and the second sub-terminal is connected to the fourth sub-terminal through two or more metal traces.

[0022] In some embodiments, the flexible tape further includes an insulating adhesive, which is disposed at least between adjacent metal traces. In the region corresponding to the first terminal, the metal trace is in direct contact with the first terminal, and in the region corresponding to the second terminal, the metal trace is in direct contact with the second terminal. Alternatively, the display panel may further include anisotropic conductive adhesive, which is disposed between the first terminal and the metal traces, and between the second terminal and the metal traces.

[0023] Beneficial effects: This application provides a flexible tape and a display module; the flexible tape connects the first terminal and the second terminal through metal traces, eliminating the need for separate front, side, and back conductors, thus improving the manufacturing efficiency of the display module. Furthermore, the flexible tape protects the metal traces and terminals, eliminating the need for side sealing, further improving manufacturing efficiency. By ensuring that the first line width is less than the difference between the second line spacing and the alignment deviation, and the first line spacing is less than the difference between the second line width and the alignment deviation, even if the metal traces are misaligned, they cannot connect to two first terminals or two second terminals. Moreover, the metal traces will not connect to mismatched first and second terminals, thus preventing short circuits between adjacent first and second terminals. Even when the metal traces are misaligned, at least one metal trace can connect to both the first and second terminals, ensuring proper connection and normal operation of the display module, thereby improving the yield rate of the display module. Attached Figure Description

[0024] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of an existing display device.

[0026] Figure 2 This is a schematic diagram of the flexible tape provided in an embodiment of this application.

[0027] Figure 3 This is a first schematic diagram of a display module provided in an embodiment of this application.

[0028] Figure 4 This is a second schematic diagram of a display module provided in an embodiment of this application.

[0029] Figure 5 for Figure 3 An exploded view of the display panel.

[0030] Figure 6 This is a third schematic diagram of a display module provided in an embodiment of this application.

[0031] Figure 7 This is a fourth schematic diagram of a display module provided in an embodiment of this application.

[0032] Figure 8 This is a fifth schematic diagram of a display module provided in an embodiment of this application.

[0033] Figure 9 This is a sixth schematic diagram of a display module provided in an embodiment of this application.

[0034] Figure 10This is a schematic diagram of a display device provided in an embodiment of this application. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0036] like Figure 1 As shown, Figure 1 (a) in the figure is a cross-sectional schematic diagram of an existing display device. Figure 1 (b) is a first schematic diagram of the wire 14 in an existing display device. Figure 1 (c) is a second schematic diagram of the wire 14 in an existing display device.

[0037] like Figure 1 As shown, existing mini-LED / micro-LED display devices employ back-bonding technology to reduce splicing seams. Specifically, existing mini-LED / micro-LED display devices have a front terminal 12 on the front side of the glass substrate 11, which is connected to the mini-LED / micro-LED light-emitting unit. A back terminal 13 is provided on the back side of the glass substrate 11, which is connected to the driver chip. Then, the front terminal 12 and the back terminal 13 are connected through wires 14 to realize the display function of the mini-LED / micro-LED display device. Existing methods for fabricating the conductive lines 14 include laser etching. This method requires etching the front conductive lines 141, side conductive lines 142, and back conductive lines 143 separately. For example, a common process involves: first, fabricating a metal layer near the edge of the glass substrate 11 using methods such as printing, physical vapor deposition, electroplating, or electroless plating; then, patterning the metal traces using laser etching. Since the metal traces involve three surfaces—front, side, and back—laser etching is required in three stages. Finally, the traces are encapsulated for protection to improve their resistance to water vapor intrusion and mechanical shock. This process is quite complex. Furthermore, because traditional alignment terminals cannot be used for alignment when fabricating the side metal traces, insufficient alignment accuracy occurs during etching of the side metal of the glass substrate 11, leading to left-right misalignment of the side conductive lines. Specifically, for example... Figure 1 As shown in (b), ideally, the side guide 142 is aligned with the front guide 141 and the back guide 143. However, due to misalignment during the etching process of the side guide 142, the actual alignment is as follows: Figure 1As shown in (c) of , the side conductive wires 142 connect adjacent front conductive wires 141 and back conductive wires 143, resulting in a short circuit of the conductive wires 14 and reducing the yield of the display device. Therefore, the existing display device has the technical problems that the process steps of the side conductive wires are complicated, and insufficient alignment accuracy of the side conductive wires causes a short circuit between adjacent conductive wires.

[0038] In view of the above technical problems, embodiments of the present application provide a flexible adhesive tape and a display device, so as to solve the above technical problems.

[0039] Figure 2 which is a schematic diagram of the flexible adhesive tape provided in an embodiment of the present application; Figure 3 which is a first schematic diagram of a display module provided in an embodiment of the present application; Figure 4 which is a second schematic diagram of a display module provided in an embodiment of the present application; Figure 5 is Figure 4 an exploded view of the display module in , wherein Figure 5 (a) in is a schematic diagram of a first terminal 22, Figure 5 (b) in is a schematic diagram of a second terminal 23, Figure 5 (c) in is a schematic diagram of a metal trace 24, Figure 5 (d) in is a schematic diagram of a flexible substrate 25; Figure 6 which is a third schematic diagram of a display module provided in an embodiment of the present application.

[0040] As shown in Figures 2 to 6 , an embodiment of the present application provides a flexible adhesive tape, the flexible adhesive tape 20 is used to connect the first terminal 22 on the first surface 211 and the second terminal 23 on the second surface 212 which are oppositely arranged on the display panel 30, the flexible adhesive tape 20 comprises:

[0041] a flexible substrate 25;

[0042] metal traces 24 arranged on one side of the flexible substrate 25, at least part of the metal traces 24 are used for connecting the first terminal 22 and the second terminal 23;

[0043] wherein, the maximum line width of the metal traces 24 is a first line width L1, the maximum line spacing between two adjacent metal traces 24 is a first line spacing K1, the minimum line width of the first terminal 22 is a second line width (for example, the line width L2 of the first sub-terminal 221), the minimum line spacing of the first terminal 22 is a second line spacing K2, there is an alignment deviation L6 between the first terminal 22 and the second terminal 23, the first line width L1 is smaller than the difference between the second line spacing K2 and the alignment deviation L6 (that is, L1<K2-L6), and the first line spacing K1 is smaller than the difference between the second line width and the alignment deviation L6 (that is, K1<L2-L6).

[0044] This application provides a flexible tape that connects the first and second terminals via metal traces. This eliminates the need for separate front, side, and back conductors, improving the manufacturing efficiency of the display module. The flexible tape also protects the metal traces and terminals, eliminating the need for side sealing, further enhancing manufacturing efficiency. Furthermore, by ensuring the first line width is less than the difference between the second line spacing and the alignment deviation, and the first line spacing is less than the difference between the second line width and the alignment deviation, even if the metal traces are misaligned, they cannot connect to two first terminals or two second terminals. The metal traces also prevent mismatched first and second terminals from connecting, thus avoiding short circuits between adjacent first and second terminals. Even when the metal traces are misaligned, at least one metal trace can connect to both the first and second terminals, ensuring proper connection and normal operation of the display module, thereby improving the yield rate.

[0045] It should be noted that the first surface 211 and the second surface 212 are two surfaces arranged opposite to each other. The first surface 211 and the second surface 212 can be the front and back of the display panel, respectively. For example, the first surface 211 is the side where the light-emitting unit is set, and the second surface 212 is the side where the driver chip is bonded.

[0046] It should be noted that the corresponding arrangement of the first and second terminals means that when the metal traces connect the first and second terminals, each first terminal corresponds to one second terminal. The line widths of the corresponding first and second terminals can be equal, and the line spacing between two adjacent second terminals is equal to the line spacing between the corresponding two first terminals. The offset distance between the projections of the corresponding first and second terminals onto the substrate is the alignment deviation between the first and second terminals. For example, in... Figure 4 In this configuration, each first terminal 22 is correspondingly paired with a second terminal 23. Figure 6 In the above, the offset distance between the first terminal 22 and the corresponding second terminal 23 is the alignment deviation L6 between the first terminal 22 and the second terminal.

[0047] It should be noted that the maximum linewidth of the metal trace 24 refers to the following: when the linewidths of the metal traces 24 are unequal, the linewidth of the metal trace 24 with the largest linewidth is the maximum linewidth of the metal trace 24, that is, the linewidth of the metal trace 24 with the largest linewidth is the first linewidth; when the linewidths of the metal traces 24 are equal, the linewidth of any metal trace 24 is the maximum linewidth of the metal trace 24, that is, the linewidth of any metal trace 24 is the first linewidth. In the accompanying drawings of the embodiments of this application, the linewidths of the metal traces 24 are shown to be the same; therefore, the linewidth of the metal traces 24 on each side is the first linewidth L1.

[0048] It should be noted that the maximum spacing between two adjacent metal traces 24 refers to the following: when there is a gap between any two adjacent metal traces 24, and the gaps between two adjacent metal traces 24 are unequal, the maximum spacing between two adjacent metal traces 24 is the spacing between the two metal traces 24 with the largest spacing; when the gaps between any two metal traces 24 are equal, the spacing between any two adjacent metal traces 24 is the maximum spacing between two adjacent metal traces 24. In the accompanying drawings of this application embodiment, the same spacing is used to illustrate that any two adjacent metal traces 24 have the same spacing; therefore, the spacing between any two adjacent metal traces 24 is the first spacing K1.

[0049] It should be noted that, as Figure 6 As shown, the first terminal 22 includes a first sub-terminal 221 and a second sub-terminal 222. The line width L2 of the first sub-terminal 221 is smaller than the line width L3 of the second sub-terminal 222. Therefore, the minimum line width of the first terminal 22 is L2. It is understandable that... Figure 6 Only two line widths of the first terminal are shown. When the display panel includes first terminals with multiple line widths, the minimum line width of the first terminal is the line width of the first terminal with the smallest line width.

[0050] It should be noted that, as Figure 6 As shown, the wire spacing K2 between the second sub-terminal 222 and the second sub-terminal 222 is less than the wire spacing K3 between the first sub-terminal 221 and the second sub-terminal. Therefore, the minimum wire spacing of the first terminal 22 is K2. It can be understood that... Figure 6 Only two line spacings for the first terminal are shown. When the first terminal of the display panel includes multiple different line spacings, the minimum line spacing of the first terminal is the line spacing between the two first terminals with the smallest line spacing. Similarly, if the line spacing K4 between the fourth sub-terminal 232 and the third sub-terminal 231 is less than the line spacing K5 between the fourth sub-terminal 232 and the third sub-terminal 231, then the minimum line spacing of the second terminal is K4.

[0051] It should be noted that, Figure 6 The example given is that the distance between the second sub-terminal and the second sub-terminal is less than the distance between the first sub-terminal and the second sub-terminal. However, the embodiments of this application are not limited to this. For example, the distance between the first sub-terminal and the second sub-terminal may be less than the distance between the second sub-terminal and the second sub-terminal, or the distance between the first sub-terminal and the second sub-terminal may be less than the distance between the first sub-terminal and the first sub-terminal. Similarly, the arrangement of the third sub-terminal and the fourth sub-terminal can be referred to the arrangement of the first sub-terminal and the second sub-terminal.

[0052] Specifically, Figure 6The illustration shows the second sub-terminal being arranged adjacent to the first sub-terminal, but the embodiments of this application are not limited to this. For example, the second sub-terminal may be arranged adjacent to the first sub-terminal, and the first sub-terminal may be arranged adjacent to the first sub-terminal. Similarly, the arrangement of the third and fourth sub-terminals can be referred to the arrangement of the first and second sub-terminals.

[0053] It should be noted that the alignment deviation of the first and second terminals refers to the slight deviation that may occur between the first and second terminals during their fabrication due to the influence of alignment accuracy. For example... Figure 6 The second terminal 23 is offset to the left relative to the first terminal 22 by L6, so the alignment deviation between the first and second terminals is L6. It can be understood that the alignment deviation between any two corresponding first and second terminals is L6.

[0054] In one embodiment, at least some of the metal traces have different line widths. For example, some metal traces have a line width greater than other metal traces.

[0055] In one embodiment, at least some of the adjacent metal traces have different line spacing. For example, some of the adjacent metal traces have a first line spacing, while the line spacing of other adjacent metal traces is less than the first line spacing.

[0056] This addresses the issue that unequal trace widths in metal traces result in a smaller number of traces and a higher total impedance for the metal traces connecting the first and second terminals. In one embodiment, such as... Figure 4 As shown, the linewidths of any two metal traces 24 are equal, meaning the linewidth of each metal trace 24 is the first linewidth L1. By making the linewidths of all metal traces equal, more metal traces can be set up with the same width. Consequently, the bus width of the metal trace between any set of first terminals and corresponding second terminals is closer to the linewidth of the first or second terminal it connects to. At the same time, the lengths of the contact portions between the metal traces and the first and second terminals are the line lengths of the first and second terminals, respectively, resulting in a larger contact area between the metal traces and the first and second terminals. This helps to avoid problems such as excessive voltage drop and trace melting during signal transmission, thereby improving the yield of the display panel.

[0057] This addresses the issue that unequal spacing between metal traces leads to a smaller number of metal traces and a higher total impedance of the metal traces connecting the first and second terminals. In one embodiment, such as... Figure 4As shown, the spacing between any two adjacent metal traces 24 is the same, that is, the spacing between any two adjacent metal traces 24 is the first spacing K1. By making the spacing between any two adjacent metal traces the same, more metal traces can be set with the same width. Correspondingly, the bus width of the metal trace between any set of first terminals and corresponding second terminals is closer to the line width of the first or second terminal it connects to. At the same time, the length of the contact portion between the metal trace and the first and second terminals is the line length of the first and second terminals, respectively, so that the contact area between the metal trace and the first and second terminals is larger. This can avoid problems such as excessive voltage drop and trace melting during signal transmission, thereby improving the yield of the display panel.

[0058] The above embodiments are illustrated using examples of any two metal traces having equal line widths and any two adjacent metal traces having the same line spacing. However, the embodiments of this application are not limited to these. For example, if any two metal traces have equal line widths and any two adjacent metal traces have the same line spacing, the maximum number of metal traces can be set for the same width. Consequently, the bus width of the metal trace between any group of first terminals and corresponding second terminals is closer to the line width of the first or second terminal it connects to. This can avoid problems such as excessive voltage drop and trace melting during signal transmission, thereby improving the yield of the display panel.

[0059] To address the issue of insufficient water and oxygen barrier properties of flexible tapes, which could lead to water and oxygen intrusion, in one embodiment, such as... Figure 9 As shown, the flexible tape 20 further includes a water-blocking layer 29, which is disposed between the flexible substrate 25 and the metal trace 24, or on the side of the flexible substrate 25 away from the metal trace 24. By providing the water-blocking layer, the water-blocking layer can further protect the metal trace and terminals, preventing water and oxygen intrusion and mechanical impact, thereby improving the yield of the display panel.

[0060] Specifically, when setting the water-blocking layer 29, the projected area of ​​the water-blocking layer 29 on the flexible substrate 25 is equal to the area of ​​the flexible substrate 25. By making the water-blocking layer cover the entire flexible substrate, the water-blocking layer can seal the flexible tape, thereby preventing water and oxygen intrusion.

[0061] Specifically, Figure 9 The example described is that the water-blocking layer 29 is disposed on the side of the flexible substrate 25 away from the metal trace 24. However, the embodiments of this application are not limited to this. For example, the water-blocking layer can be disposed between the flexible substrate and the metal trace.

[0062] Specifically, the materials used in the water-blocking layer include, but are not limited to, inorganic materials, epoxy resin, and fluorocarbon resin.

[0063] Meanwhile, embodiments of the present application provide a display module, which comprises the flexible adhesive tape according to any one of the above embodiments and a display panel.

[0064] As Figures 3 to 6 illustrated, an embodiment of the present application provides a display module, the display module 2 comprises a flexible adhesive tape 20 and a display panel 30;

[0065] the display panel 30 comprises a substrate 21, a first terminal 22 and a second terminal 23, the substrate 21 comprises a oppositely disposed first surface 211, a second surface 212, and a side surface 213 connecting the first surface 211 and the second surface 212; the first terminal 22 is disposed on the first surface 211 of the substrate 21; the second terminal 23 is disposed on the second surface 212 of the substrate 21, and the second terminal 23 is disposed corresponding to the first terminal 22;

[0066] the flexible adhesive tape 20 is disposed along the first surface 211, the side surface 213 to the second surface 212, the flexible adhesive tape 20 comprises a flexible substrate 25 and metal traces 24, the metal traces 24 are disposed on a side of the flexible substrate 25 close to the substrate 21, and at least part of the metal traces 24 connect the first terminal 22 and the second terminal 23;

[0067] wherein, on a side of the first surface 211, the metal traces 24 are disposed between the first terminal 22 and the flexible substrate 25; on a side of the second surface 212, the metal traces 24 are disposed between the second terminal 23 and the flexible substrate 25; a maximum line width of the metal traces 24 is a first line width L1, a maximum line spacing between two adjacent metal traces 24 is a first line spacing K1, a minimum line width of the first terminal 22 is a second line width (for example, the line width L2 of a first sub-terminal 221), a minimum line spacing of the first terminal 22 is a second line spacing K2, there is an alignment deviation L6 between the first terminal 22 and the second terminal 23, the first line width L1 is smaller than a difference between the second line spacing K2 and the alignment deviation L6 (that is, L1<K2-L6), and the first line spacing K1 is smaller than a difference between the second line width and the alignment deviation L6 (that is, K1<L2-L6).

[0068] This application provides a display module that uses metal traces on a flexible tape to connect the first and second terminals, eliminating the need for separate front, side, and back conductors. This improves the manufacturing efficiency of the display module. The flexible tape also protects the metal traces and terminals, eliminating the need for side sealing, further enhancing manufacturing efficiency. By ensuring the first line width is smaller than the difference between the second line spacing and the alignment deviation, and the first line spacing is smaller than the difference between the second line width and the alignment deviation, even if the metal traces are misaligned, they cannot connect to two first terminals or two second terminals. Furthermore, the metal traces will not connect to mismatched first and second terminals, thus preventing short circuits between adjacent first and second terminals. Even when metal traces are misaligned, at least one metal trace can connect to both the first and second terminals, ensuring proper connection and normal operation of the display module, thereby improving its yield.

[0069] Specifically, such as Figure 3 , Figure 4 As shown, this application attaches flexible tape 20 to both sides of the substrate. Metal traces 24 in the flexible tape 20 connect the first terminal 22 and the second terminal 23. The metal traces 24 are formed on the flexible substrate 25. When forming the metal traces 24, it is not necessary to form the front conductor, side conductor, and back conductor separately three times. The metal layer can be directly etched to form the metal traces 24, reducing the process flow of the display module and improving its manufacturing efficiency. Furthermore, since the portions of the metal traces corresponding to the first terminal, the second terminal, and the side of the display panel are multiple parts of a single metal trace, there is no misalignment issue, avoiding short circuits caused by misalignment between the side conductors and the front and back conductors. Simultaneously, the flexible tape 20 can protect the metal traces 24, the first terminal 22, and the second terminal 23 without the need for additional side sealing, further reducing the process flow of the display module and improving its manufacturing efficiency.

[0070] At the same time, such as Figures 3 to 6As shown, in this embodiment of the application, by making the first line width L1 smaller than the difference between the second line spacing K2 and the alignment deviation L6, a metal trace 24 can only contact one of the adjacent first terminals 22 at most, and will not contact a non-corresponding second terminal 23, thereby avoiding short circuits between adjacent first terminals and second terminals. By making the first line spacing K1 smaller than the difference between the second line width and the alignment deviation L6, there must be at least one metal trace 24 between the first and corresponding second terminals 23, so that the first terminal 22 and the second terminal 23 can be properly connected, the display panel can work normally, and short circuits between first terminals, between second terminals, and between first terminals and non-corresponding second terminals are avoided, thus improving the yield of the display module. When applying the tape, this effect can be achieved without left-right alignment, improving the manufacturing efficiency of the display module.

[0071] Meanwhile, compared to setting side conductors, which requires laser etching and has lower precision, this application uses a more mature and precise process to form metal traces on a flexible substrate. This allows for further reduction in the linewidth and spacing of the metal traces, while increasing their thickness, thereby reducing voltage drop and minimizing signal loss between the first and second terminals, thus improving the yield of the display module. Furthermore, with smaller linewidths and spacings, a single flexible tape can be applied to terminals with varying spacings, making it suitable for various display panels. The flexible tape is also easy to manufacture into rolls and cut to different sizes for convenient transportation, making it suitable for a variety of products.

[0072] This addresses the issue that a misalignment between the first and second terminals exceeding the width of the metal trace could prevent a connection between them. In one embodiment, such as... Figure 6 As shown, the linewidth of the metal trace 24 is greater than the alignment deviation L6 between the first terminal 22 and the second terminal 23. By making the linewidth of the metal trace greater than the alignment deviation between the first terminal and the second terminal, the metal trace can be connected to the first terminal and the second terminal, avoiding signal transmission failure due to the first terminal and the second terminal not being connected, thus improving the yield of the display module.

[0073] In one embodiment, the line width of the metal trace can be made less than or equal to the alignment deviation between the first terminal and the second terminal.

[0074] In one embodiment, such as Figure 3 , Figure 4As shown, the alignment deviation between the first terminal 22 and the second terminal 23 is 0, and the projection of the first terminal 22 on the substrate 21 coincides with the projection of the second terminal 23 on the substrate 21. By making the alignment deviation between the first terminal and the second terminal 0, and ensuring that the projections of the first terminal on the substrate and the second terminal on the substrate coincide, the line width and / or spacing of the metal traces can be set larger during the fabrication of the metal traces. This avoids problems such as open circuits or excessive impedance caused by excessively small line widths of the metal traces, and also avoids problems such as short circuits caused by excessively small line spacings of the metal traces. Alternatively, more metal traces can be set, thereby avoiding problems such as excessive voltage drop and trace melting during signal transmission, and improving the yield of the display module.

[0075] Specifically, for example, if the alignment deviation between the first terminal and the second terminal is 1 micrometer and the minimum line spacing of the first terminal is 6 micrometers, then the line width of the metal trace needs to be less than 5 micrometers. If the alignment deviation between the first terminal and the second terminal is 0 and the minimum line spacing of the first terminal is 6 micrometers, then the line width of the metal trace only needs to be less than 6 micrometers. The line width of the metal trace can be increased. Similarly, the line spacing of the metal trace and the number of metal traces can be increased.

[0076] In one embodiment, the alignment deviation between the first terminal and the second terminal is less than or equal to 5 micrometers. Specifically, when using a laser alignment machine, there will be a certain alignment accuracy deviation, which will lead to an alignment deviation between the first terminal and the second terminal. Making the alignment deviation between the first terminal and the second terminal less than or equal to 5 micrometers can avoid the alignment deviation between the first terminal and the second terminal being too large, which would prevent the metal traces from connecting to the corresponding first terminal and second terminal, thereby improving the yield of the display module.

[0077] In one embodiment, such as Figure 4 As shown, a portion of the metal trace 24 is insulated from the first terminal 22, and the metal trace 24 insulated from the first terminal 22 is also insulated from the second terminal 23. By insulating the metal trace from the first terminal and the second terminal, the metal trace is prevented from conducting between adjacent first and second terminals, thereby improving the yield of the display module.

[0078] Specifically, such as Figure 4As shown, compared to current display devices, side traces located between two adjacent front traces can conduct to adjacent front and rear traces, causing short circuits and resulting in low yield. This embodiment addresses this by making the first line width smaller than the difference between the second line spacing and the alignment deviation. This ensures that when metal traces are misaligned, the metal traces between two adjacent first terminals will be suspended, preventing them from connecting to either the first or second terminal. This avoids conducting to adjacent first and / or second terminals, thereby improving the yield of the display module.

[0079] In one embodiment, such as Figures 3 to 6 As shown, the metal trace 24 includes a first metal trace 241. The contact area between the first metal trace 241 and the first terminal 22 is equal to the product of the line width L1 of the first metal trace 241 and the line length h1 of the first terminal 22, L1*h1. The contact area between the first metal trace 241 and the second terminal 23 is less than or equal to the product of the line width L1 of the first metal trace 241 and the line length h2 of the second terminal 23, L1*h2. By ensuring that the contact area between the first metal trace and the first terminal is the maximum overlap area between them, and the contact area between the first metal trace and the second terminal is also the maximum overlap area between them, the connection between the first metal trace and the first terminal and the second terminal is improved. This avoids poor signal transmission due to poor connection between the first terminal and the second terminal, thus improving the yield of the display module. By making the contact area between the first metal trace and the first terminal the maximum overlap area between the first metal trace and the first terminal, the first metal trace can contact the second terminal, enabling the first metal trace to connect the first terminal and the second terminal, thus achieving normal operation of the display module.

[0080] Specifically, since the embodiments of this application do not limit the orientation of the first surface and the second surface, nor the specific location of the first terminal and the second terminal, the first terminal can be a terminal connected to a bonding terminal on the display panel side, and the second terminal can be a terminal connected to a bonding terminal on the driver chip side, or the second terminal can be a terminal connected to a bonding terminal on the display panel side, and the first terminal can be a terminal connected to a bonding terminal on the driver chip side. It can be understood that the design of the first terminal can be applied to the second terminal, and vice versa. For example, the contact area between the first metal trace 241 and the first terminal 22 is less than or equal to the product L1 of the linewidth L1 of the first metal trace 241 and the line length h1 of the first terminal 22, L1*h1, and the contact area between the first metal trace 241 and the second terminal 23 is equal to the product L1 of the linewidth L1 of the first metal trace 241 and the line length h2 of the second terminal 23, L1*h2. The design can also be based on the above description in the following embodiments, and will not be repeated in the following embodiments.

[0081] Specifically, such as Figure 4 As shown, the area of ​​the overlapping portion of the projection of the first metal trace 241 on the flexible substrate 25 and the projection of the first terminal 22 on the flexible substrate 25 is the product of the linewidth L1 of the first metal trace 241 and the line length h1 of the first terminal 22. Similarly, the area of ​​the overlapping portion of the projection of the first metal trace 241 on the flexible substrate 25 and the projection of the second terminal 23 on the flexible substrate 25 is the product of the linewidth L1 of the first metal trace 241 and the line length h2 of the second terminal 23, thus maximizing the contact area between the first metal trace 241 and the first terminal 22 and the second terminal 23. Figure 6 As shown, the area of ​​the overlapping portion of the projection of the first metal trace 241 on the flexible substrate 25 and the projection of the first terminal 22 on the flexible substrate 25 is the product of the linewidth L1 of the first metal trace 241 and the line length h1 of the first terminal 22. The area of ​​the overlapping portion of the projection of the first metal trace 241 on the flexible substrate 25 and the projection of the second terminal 23 on the flexible substrate 25 is less than the product of the linewidth L1 of the first metal trace 241 and the line length h2 of the second terminal 23, so that the first metal trace 241 can connect the first terminal 22 and the second terminal 23.

[0082] Specifically, when the alignment deviation between the first and second terminals is 0, the contact area between a portion of the metal trace and the first terminal can be equal to the product of the trace width and the terminal length, and the contact area between the metal trace and the second terminal can also be equal to the product of the trace width and the terminal length. When the alignment deviation between the first and second terminals is greater than 0, the contact area between a portion of the metal trace and the first terminal can be equal to the product of the trace width and the terminal length, and the contact area between the metal trace and the second terminal can also be equal to the product of the trace width and the terminal length; alternatively, the contact area between a portion of the metal trace and the first terminal can be equal to the product of the trace width and the terminal length, and the contact area between the metal trace and the second terminal can be less than the product of the trace width and the terminal length.

[0083] In one embodiment, such as Figures 3 to 6 As shown, the metal trace 24 includes a second metal trace 242. The contact area between the second metal trace 242 and the first terminal 22 is less than the product of the line width L1 of the second metal trace 242 and the line length h1 of the first terminal 22, L1*h1. Similarly, the contact area between the second metal trace 242 and the second terminal 23 is less than the product of the line width L1 of the second metal trace 242 and the line length h2 of the second terminal 23, L1*h2. By making the contact area between the second metal trace and the first terminal less than the maximum overlap area between them, and the contact area between the second metal trace and the second terminal less than the maximum overlap area between them, the second metal trace can still connect normally to the first terminal when they are misaligned. Simultaneously, the second metal trace will not connect to adjacent first terminals, avoiding short circuits between terminals in the display panel and improving the yield rate of the display module.

[0084] Specifically, when the contact area between the metal trace and the first terminal is less than the product of the trace width and the first terminal length, the contact area between the metal trace and the first terminal can be made equal to the contact area between the metal trace and the second terminal. Alternatively, the contact area between the metal trace and the first terminal can be greater than the contact area between the metal trace and the second terminal. For example, the metal trace can be in contact with the first terminal, but the metal trace is insulated from the second terminal. Furthermore, the contact area between the metal trace and the first terminal can be less than the contact area between the metal trace and the second terminal. Figure 6 As shown.

[0085] In one embodiment, such as Figure 6 As shown, the first terminal 22 includes a first sub-terminal 221 and a second sub-terminal 222;

[0086] The second terminal 23 includes a third sub-terminal 231 and a fourth sub-terminal 232, wherein the third sub-terminal 231 is correspondingly disposed to the first sub-terminal 221, and the fourth sub-terminal 232 is correspondingly disposed to the second sub-terminal 222;

[0087] In this configuration, the linewidth L2 of the first sub-terminal 221 is equal to the linewidth L4 of the third sub-terminal 231, the linewidth L3 of the second sub-terminal 222 is equal to the linewidth L5 of the fourth sub-terminal 232, and the linewidth L3 of the second sub-terminal 222 is greater than the linewidth L2 of the first sub-terminal 221. The number of metal traces 24 connecting the first sub-terminal 221 and the third sub-terminal 231 is less than or equal to the number of metal traces 24 connecting the second sub-terminal 222 and the fourth sub-terminal 232. By including first and second sub-terminals of different widths in the first terminal, and correspondingly including third and fourth sub-terminals of different widths in the second terminal, when metal traces connect the first and third sub-terminals and the second and fourth sub-terminals, the wider second and fourth sub-terminals can be connected by more metal traces. This avoids problems such as excessive current between the second and fourth sub-terminals causing metal traces to melt, thus improving the yield of the display module.

[0088] Specifically, when setting the first and second terminals, since the signals input to different signal lines in the display panel are different—for example, some signal lines have a larger input voltage and some signal lines have a smaller input voltage—it is necessary to adjust the line width and spacing of the signal lines accordingly. This will result in different line widths and spacings at the terminals connecting the signal lines.

[0089] To address the different line widths of the first terminals, this embodiment of the application can make the line widths of all metal traces equal and the line spacing of adjacent metal traces the same. This ensures that when metal traces are connected to first and second sub-terminals of different widths, the total contact area between the metal traces and the first terminal of any group of first terminals and the corresponding second terminal is closer to the cross-sectional area of ​​the first terminal to which it is connected, and the total contact area between the metal traces and the second terminal of any group of first terminals and the corresponding second terminal is closer to the cross-sectional area of ​​the second terminal to which it is connected. This can avoid problems such as excessive voltage drop and trace melting during signal transmission, thereby improving the yield of the display panel.

[0090] Specifically, since this application forms metal traces on a flexible substrate, the fabrication precision of the metal traces is higher, which can further reduce the line width and line spacing of the metal traces, and increase the thickness of the metal traces, further increasing the number of metal traces between the first terminal and the second terminal, avoiding problems such as excessive voltage drop and trace melting during signal transmission, and improving the yield of the display panel.

[0091] Specifically, the total contact area between the metal trace and the first terminal refers to the sum of the contact areas of each metal trace and the first terminal, and the total contact area between the metal trace and the second terminal refers to the sum of the contact areas of each metal trace and the second terminal.

[0092] Specifically, such as Figure 6 As shown, the number of metal traces 24 connecting the first sub-terminal 221 and the third sub-terminal 231 can be 1 or 2, and the number of metal traces 24 connecting the second sub-terminal 222 and the fourth sub-terminal 232 is 3. This allows the total width of the metal traces connecting the second and fourth sub-terminals to be larger when the width of the second and fourth sub-terminals 222 and the fourth sub-terminal 232 is larger. This results in a larger total contact area between the second and fourth sub-terminals and the metal traces, avoiding problems such as excessive voltage drop and trace melting during signal transmission, reducing signal transmission loss, lowering the power consumption of the display panel, and improving the yield of the display module.

[0093] Specifically, the total contact area between the metal traces of any set of first terminals and the corresponding second terminals and the first terminals can be one-half to nine-tenths of the cross-sectional area of ​​the first terminals, and the total contact area between the metal traces of any set of first terminals and the corresponding second terminals and the second terminals can be one-half to nine-tenths of the cross-sectional area of ​​the second terminals.

[0094] Specifically, the contact area between the metal trace and the first and second terminals can be increased by increasing the trace width. For example, the trace width can be made one-quarter to one-half the trace width of the first terminal. This increases the contact area between the metal trace and the first and second terminals and reduces the impedance of the metal trace and the risk of open circuit.

[0095] Specifically, the spacing between adjacent metal traces can be reduced, for example, by making the spacing between the metal traces half to one-tenth of the minimum spacing of the first terminal. This increases the density of the metal traces, increases the contact area between the metal traces and the first and second terminals, and reduces the loss of electrical signals from the first terminal to the second terminal.

[0096] Specifically, the line width and spacing of the metal traces can be reduced simultaneously to make them as small as possible, resulting in a higher density of metal traces. The total contact area between any group of metal traces between the first and second terminals and the first terminal is closer to the cross-sectional area of ​​the first terminal, and the total contact area between any group of metal traces between the first and second terminals and the second terminal is closer to the cross-sectional area of ​​the second terminal. This reduces the total impedance of the metal traces connecting the first and second terminals, lowers the risk of metal trace breakage, reduces signal loss, and improves the yield of the display panel.

[0097] Specifically, Figure 6 The example given is that the number of metal traces connecting the first and third sub-terminals is less than the number of metal traces connecting the second and fourth sub-terminals. However, the embodiments of this application are not limited to this. For example, the number of metal traces connecting the first and third sub-terminals may be equal to the number of metal traces connecting the second and fourth sub-terminals.

[0098] In one embodiment, such as Figure 7 As shown, the line width L2 of the first sub-terminal 221 is less than the sum of the line width L1 and the spacing K1 of the corresponding metal trace 24, i.e., L2 is less than L1 + K1. The first sub-terminal 221 and the third sub-terminal 231 are connected through a metal trace 24. By making the line width of the first sub-terminal less than the sum of the line width and spacing of the corresponding metal trace, only one metal trace can be connected to both the first and third sub-terminals, thus avoiding the problem of short circuits between adjacent terminals caused by metal traces connecting adjacent first sub-terminals.

[0099] Specifically, the above embodiments are described in detail with the example that the line width of the first sub-terminal is less than the sum of the line width and the line spacing of the metal trace. However, the embodiments of this application are not limited to this. For example, the line width of the first sub-terminal may be greater than or equal to the sum of the line width and the line spacing of the metal trace.

[0100] In one embodiment, such as Figure 7 As shown, the linewidth L3 of the second sub-terminal 222 is greater than twice the linewidth L1 of the corresponding metal trace 24 plus the sum of the line spacing K1 of the corresponding metal trace 24. The second sub-terminal 222 and the fourth sub-terminal 232 are connected through two or more metal traces 24. By making the linewidth of the second sub-terminal greater than twice the linewidth of the corresponding metal trace plus the sum of the line spacing of the corresponding metal trace, the second and fourth sub-terminals can be connected through two or more metal traces. This avoids excessive voltage drop across the metal traces, which could lead to high power consumption, and also prevents the metal traces from melting due to excessive current. This reduces the power consumption of the display module and improves its yield.

[0101] Specifically, the above embodiments are described in detail with the example that the line width of the second sub-terminal is greater than twice the line width of the metal trace and the sum of the line spacing of the corresponding metal trace. However, the embodiments of this application are not limited to this. For example, the line width of the second sub-terminal is greater than the sum of the line width of the metal trace and the line spacing of the metal trace, and the line width of the second sub-terminal is less than or equal to twice the line width of the metal trace and the sum of the line spacing of the corresponding metal trace.

[0102] In one embodiment, such as Figure 6As shown, some of the first sub-terminals 221 and the third sub-terminals 231 are connected by a metal trace 24, and some of the first sub-terminals 221 and the third sub-terminals 231 are connected by multiple metal traces 24.

[0103] In one embodiment, some of the second sub-terminals and the fourth sub-terminals are connected by a metal trace, and some of the second sub-terminals and the fourth sub-terminals are connected by multiple metal traces.

[0104] In one embodiment, the line width of the first terminal is equal to the line width of the corresponding second terminal, and the line spacing between two adjacent first terminals is equal to the line spacing between two corresponding second terminals. By making the line width of the first terminal equal to the line width of the corresponding second terminal, and the line spacing between two adjacent first terminals equal to the line spacing between two corresponding second terminals, the first terminals and the second terminals are configured correspondingly to transmit various signals.

[0105] This addresses the issue that small spacing between metal traces can lead to short circuits. In one embodiment, such as... Figure 8 As shown, the flexible tape 20 also includes insulating adhesive 28, which is at least disposed between adjacent metal traces 24. In the region corresponding to the first terminal 22, the metal trace 24 is in direct contact with the first terminal 22; in the region corresponding to the second terminal 23, the metal trace 24 is in direct contact with the second terminal 23. By providing insulating adhesive, which is at least disposed between adjacent metal traces, short circuits between the metal traces are prevented. Furthermore, the metal traces can contact the first terminal and directly contact the second terminal, allowing the metal traces to conduct electricity between the first and second terminals, thus enabling the display panel to function normally.

[0106] Specifically, this application provides insulating adhesive on the flexible tape, enabling the flexible tape to adhere stably to the substrate and preventing it from falling off. Furthermore, to avoid short circuits between metal traces, the adhesive material is made insulating, thereby improving the yield of the display panel.

[0107] Specifically, the flexible tape has insulating adhesive on all four edges. By providing insulating adhesive on all four edges of the flexible tape, the area under the flexible tape is sealed after it is bonded to the substrate, preventing moisture intrusion and eliminating the need for side sealing, thus improving the manufacturing efficiency of the display panel.

[0108] Specifically, such as Figure 8 As shown, Figure 8The example described uses insulating adhesive 28 placed between adjacent metal traces 24, but the embodiments of this application are not limited to this. For example, the insulating adhesive can be placed on the flexible substrate and the metal traces. When the flexible tape is bonded to the substrate, a hot pressing process is used at the position where the metal traces overlap with the first terminal and the second terminal, so that there is no insulating adhesive at the position where the metal traces 24 are connected to the first terminal and the second terminal, and the metal traces can directly contact the first terminal and the second terminal, so that the display panel can work normally.

[0109] Specifically, the materials used in insulating adhesives include, but are not limited to, polyacrylate, acrylic resin, and epoxy resin.

[0110] In one embodiment, the display module further includes anisotropic conductive adhesive, which is disposed between the first terminal and the metal trace, and between the second terminal and the metal trace. By using anisotropic conductive adhesive, the overlap yield between the metal trace and the first and second terminals is higher, thereby improving the yield of the display module.

[0111] In one embodiment, along the direction from the first surface, the side surface to the second surface, the length of the metal trace is greater than the sum of the lengths of the first terminal, the second terminal, and the spacing between the first and second terminals. By making the length of the metal trace greater than the sum of the lengths of the first and second terminals, the metal trace can completely overlap the first and second terminals, increasing the contact area between the metal trace and the first and second terminals. This avoids problems such as excessive voltage drop and trace melting during signal transmission, thereby improving the yield of the display panel.

[0112] In one embodiment, the linewidth of the metal trace ranges from 2 micrometers to 50 micrometers, and the line spacing of the metal trace ranges from 2 micrometers to 50 micrometers.

[0113] In one embodiment, the linewidth of the first terminal ranges from 5 micrometers to 500 micrometers, and the line spacing of the first terminal ranges from 5 micrometers to 51 micrometers.

[0114] In one embodiment, the substrate material includes glass. When the substrate material includes glass, the first terminal and the second terminal can be aligned using the same marking, so that the first terminal and the second terminal can be aligned within the alignment deviation range.

[0115] In one embodiment, the flexible substrate is made of one of polyethylene terephthalate, polyimide, and polyethylene naphthalate.

[0116] In one embodiment, the material of the metal trace includes one of copper and aluminum.

[0117] In one embodiment, such as Figure 3 As shown, the display panel also includes a light-emitting unit 27, which includes a mini-LED light-emitting unit and a micro-LED light-emitting unit.

[0118] The above embodiments have described in detail the alignment deviation of the first terminal and the second terminal, the contact method between the metal trace and the first terminal and the second terminal, and the connection method between the first sub-terminal, the second sub-terminal, the third sub-terminal, the fourth sub-terminal and the metal trace. However, the embodiments of this application are not limited thereto. When the embodiments do not conflict, they can be combined. For example, when the alignment deviation between the first terminal and the second terminal is 0, some of the metal traces can be insulated from the first terminal, and the metal traces insulated from the first terminal can be insulated from the second terminal. For example, the line width of the first terminal is in the range of 5 micrometers to 500 micrometers, the line spacing of the first terminal is in the range of 5 to 51 micrometers, the line width of the first terminal is equal to the line width of the corresponding second terminal, and the line spacing of two adjacent first terminals is equal to the line spacing of two corresponding second terminals.

[0119] Meanwhile, this application provides a method for manufacturing a display module, which manufactures a display module as described in any of the above embodiments. The method includes:

[0120] Metal traces are fabricated on a flexible substrate to obtain a flexible tape;

[0121] Provides a display panel; the display panel includes a substrate;

[0122] Flexible tape is attached to the side of the substrate and bent to connect the metal traces to the first and second terminals.

[0123] Specifically, the steps of fabricating metal traces on a flexible substrate to obtain flexible tape also include coating insulating adhesive on the metal traces.

[0124] Specifically, when applying adhesive insulating adhesive, the insulating adhesive can be applied between metal traces, or it can be applied to areas where the metal traces contact the terminals. Alternatively, the entire surface can be coated with insulating adhesive. When applying insulating adhesive to the entire surface, the flexible tape can be attached to the substrate by hot pressing, so that the insulating adhesive on the metal traces is avoided, and the metal traces make normal contact with the first and second terminals, thereby improving the yield of the display module.

[0125] Meanwhile, this application provides a display device, which includes a display module and a driver chip as described in any of the above embodiments.

[0126] Specifically, such as Figure 9As shown, the display module also includes a fan-out line 31 and a bonding terminal 32. The fan-out line 31 is connected to the bonding terminal 32 and the second terminal 23. The bonding terminal 32 is connected to the driver chip 41.

[0127] As can be seen from the above embodiments:

[0128] This application provides a flexible tape and a display module. The flexible tape connects the first and second terminals via metal traces, eliminating the need for separate front, side, and back conductors, thus improving the manufacturing efficiency of the display module. Furthermore, the flexible tape protects the metal traces and terminals, eliminating the need for side sealing, further enhancing manufacturing efficiency. By ensuring that the first line width is less than the difference between the second line spacing and the alignment deviation, and the first line spacing is less than the difference between the second line width and the alignment deviation, even if the metal traces are misaligned, they cannot connect to two first terminals or two second terminals. Moreover, the metal traces will not connect to mismatched first and second terminals, preventing short circuits between adjacent first and second terminals. Even when the metal traces are misaligned, at least one metal trace can connect to both the first and second terminals, ensuring proper connection and normal operation of the display module, thereby improving the yield rate of the display module.

[0129] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0130] The above provides a detailed description of a flexible tape and display module provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A flexible adhesive tape, characterized in that, The flexible tape, used for connecting a first terminal on a first surface and a second terminal on a second surface of a display panel that are disposed opposite to each other, comprises: Flexible substrate; Metal traces are disposed on one side of the flexible substrate, and at least a portion of the metal traces are used to connect the first terminal and the second terminal; Wherein, the maximum line width of the metal trace is the first line width, the maximum line spacing between two adjacent metal traces is the first line spacing, the minimum line width of the first terminal is the second line width, the minimum line spacing of the first terminal is the second line spacing, there is a misalignment between the first terminal and the second terminal, the first line width is less than the difference between the second line spacing and the misalignment, and the first line spacing is less than the difference between the second line width and the misalignment. The line width of the metal trace is greater than the alignment deviation between the first terminal and the second terminal, and the metal trace connects the first terminal and the second terminal.

2. The flexible tape as described in claim 1, characterized in that, Any two of the metal traces have the same line width, and any two adjacent metal traces have the same line spacing.

3. The flexible tape as described in claim 1, characterized in that, The flexible tape further includes a water-blocking layer, which is disposed between the flexible substrate and the metal trace, or on the side of the flexible substrate away from the metal trace.

4. A display module, characterized in that, Includes the flexible tape and display panel as described in any one of claims 1 to 3; The display panel includes a substrate, a first terminal, and a second terminal. The substrate includes a first surface and a second surface disposed opposite to each other, and a side surface connecting the first surface and the second surface. The first terminal is disposed on the first surface of the substrate, and the second terminal is disposed on the second surface of the substrate. The second terminal is disposed corresponding to the first terminal. The flexible tape is disposed along the first surface, the side surface to the second surface, and the metal traces are disposed on the side of the flexible substrate close to the substrate, and at least a portion of the metal traces connect the first terminal and the second terminal; On the first surface side, the metal trace is disposed between the first terminal and the flexible substrate; on the second surface side, the metal trace is disposed between the second terminal and the flexible substrate.

5. The display module as described in claim 4, characterized in that, The alignment deviation between the first terminal and the second terminal is 0, and the projection of the first terminal on the substrate coincides with the projection of the second terminal on the substrate.

6. The display module as described in claim 4, characterized in that, Some of the metal traces are insulated from the first terminal, and the metal traces insulated from the first terminal are insulated from the second terminal.

7. The display module as described in claim 4, characterized in that, The metal trace includes a first metal trace, the contact area between the first metal trace and the first terminal is equal to the product of the line width of the first metal trace and the line length of the first terminal, and the contact area between the first metal trace and the second terminal is less than or equal to the product of the line width of the first metal trace and the line length of the second terminal; and / or the metal trace includes a second metal trace, the contact area between the second metal trace and the first terminal is less than the product of the line width of the second metal trace and the line length of the first terminal, and the contact area between the second metal trace and the second terminal is less than the product of the line width of the second metal trace and the line length of the second terminal.

8. The display module as described in claim 4, characterized in that, The first terminal includes a first sub-terminal and a second sub-terminal; The second terminal includes a third sub-terminal and a fourth sub-terminal, wherein the third sub-terminal is configured corresponding to the first sub-terminal and the fourth sub-terminal is configured corresponding to the second terminal; Wherein, the line width of the first sub-terminal is equal to the line width of the third sub-terminal, the line width of the second sub-terminal is equal to the line width of the fourth sub-terminal, the line width of the second sub-terminal is greater than the line width of the first sub-terminal, and the number of metal traces connecting the first sub-terminal and the third sub-terminal is less than or equal to the number of metal traces connecting the second sub-terminal and the fourth sub-terminal.

9. The display module as described in claim 8, characterized in that, The first sub-terminal has a line width less than the sum of the line width and the spacing of the corresponding metal trace, and the first sub-terminal is connected to the third sub-terminal via a metal trace; and / or the second sub-terminal has a line width greater than twice the sum of the line width and the spacing of the corresponding metal trace, and the second sub-terminal is connected to the fourth sub-terminal via two or more metal traces.

10. The display module as described in claim 4, characterized in that, The flexible tape further includes an insulating adhesive, which is disposed at least between adjacent metal traces. In the region corresponding to the first terminal, the metal trace is in direct contact with the first terminal, and in the region corresponding to the second terminal, the metal trace is in direct contact with the second terminal. Alternatively, the display module further includes anisotropic conductive adhesive, which is disposed between the first terminal and the metal trace, and between the second terminal and the metal trace.

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