Display module and display device

Abstract

The application relates to a display module and a display device. The display module has a display area and a non-display area located on at least one side of the display area. The non-display area comprises a bending area and a binding area located on the side of the bending area away from the display area. The display module comprises a substrate, a driving chip, a touch wire and a shielding structure. The driving chip is located on one side of the substrate and in the binding area. The touch wire and the driving chip are located on the same side of the substrate. The touch wire comprises a touch connection line and a touch signal line. The touch signal line is located in the binding area and electrically connected with the driving chip. The touch connection line extends from the display area to the binding area and is electrically connected with the touch signal line. The shielding structure and the touch wire are located on the same side of the substrate. The shielding structure forms a shielding opening. The orthographic projection of the touch signal line on the substrate is located in the orthographic projection of the shielding opening on the substrate. The shielding structure is electrically connected with a fixed potential end.

Description

Technical Field

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

[0002] Organic light-emitting diodes (OLEDs) and flat panel displays based on light-emitting diodes (LEDs) are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body and wide range of applications, becoming the mainstream of display devices.

[0003] However, the performance of current OLED display products needs to be improved. Summary of the Invention

[0004] This application provides a display module and display device, which aims to improve the electromagnetic shielding effect of touch signal lines.

[0005] An embodiment of the first aspect of this application provides a display module having a display area and a non-display area located on at least one side of the display area. The non-display area includes a bending area and a bonding area located on the side of the bending area away from the display area. The display module includes a substrate, a driver chip, touch traces, and a shielding structure. The driver chip is located on one side of the substrate and in the bonding area. The touch traces are located on the same side of the substrate as the driver chip. The touch traces include touch connection lines and touch signal lines. The touch signal lines are located in the bonding area and electrically connected to the driver chip. The touch connection lines extend from the display area to the bonding area and are electrically connected to the touch signal lines. The shielding structure is located on the same side of the substrate as the touch traces. The shielding structure is located on at least one side of the area where the touch signal lines are located and is electrically connected to a fixed potential terminal.

[0006] According to an embodiment of the first aspect of this application, the shielding structure encloses and forms a shielding opening, and the orthographic projection of the touch signal line on the substrate is located within the orthographic projection of the shielding opening on the substrate.

[0007] According to the first aspect of this application, the bonding area is provided with multiple independent touch signal lines, and the orthographic projection of the multiple touch signal lines on the substrate is located within the orthographic projection of the shielding opening on the substrate.

[0008] According to the first aspect of this application, a touch structure is provided in the display area, and multiple touch connection lines correspond one-to-one with multiple touch signal lines and are all electrically connected to the touch structure.

[0009] According to an embodiment of the first aspect of this application, the shielding structure includes: two first shielding lines, which are respectively located on both sides of the touch signal line in the first direction, and the ends of the two first shielding lines facing away from the display area are electrically connected to a fixed potential terminal. The connection direction between the display area and the bonding area intersects the thickness direction of the display module and the first direction in pairs; and a second shielding line, located on the side of the touch signal line facing the display area, and the ends of the two first shielding lines facing the display area are electrically connected through the second shielding line.

[0010] According to the embodiment of the first aspect of this application, the fixed potential terminal is a ground terminal or a power signal input terminal.

[0011] According to an embodiment of the first aspect of this application, two first shielding lines are connected to the same fixed potential terminal.

[0012] According to an embodiment of the first aspect of this application, the display module further includes: a first metal layer located on one side of the substrate; a second metal layer located between the first metal layer and the substrate; wherein the touch signal line includes a first touch sub-line and a second touch sub-line connected in sequence, the first touch sub-line being located on the first metal layer, the second touch sub-line being located on the second metal layer, and the touch connection line being electrically connected to the driver chip through the first touch sub-line and the second touch sub-line.

[0013] According to an embodiment of the first aspect of this application, the display module further includes a first insulating layer, which is located between a first metal layer and a second metal layer, and the first touch sub-wire and the second touch sub-wire are electrically connected through a via on the first insulating layer.

[0014] According to an embodiment of the first aspect of this application, the first shielding line includes a first shielding sub-line located on at least one side of the first touch sub-line in a first direction.

[0015] According to an embodiment of the first aspect of this application, the first shielding sub-wire is located in the first metal layer;

[0016] According to an embodiment of the first aspect of this application, the first shielding sub-wire and the first touch sub-wire are located on different layers.

[0017] According to an embodiment of the first aspect of this application, the first shielding sub-lines located on both sides of the first touch sub-line in the first direction are disposed in the same layer.

[0018] According to an embodiment of the first aspect of this application, the display module further includes: a third metal layer located between the second metal layer and the substrate, and a driver chip located on the third metal layer; and a second insulating layer located between the second metal layer and the third metal layer.

[0019] According to an embodiment of the first aspect of this application, the second touch sub-line is electrically connected to the driver chip through a via on the second insulating layer.

[0020] According to an embodiment of the first aspect of this application, the touch signal line further includes a third touch sub-line located in the third metal layer. The third touch sub-line connects the second touch sub-line and the driver chip, and the third touch sub-line and the second touch sub-line are electrically connected through a via on the second insulating layer.

[0021] According to the first aspect of this application, the shielding structure further includes: two third shielding lines, which are respectively connected to two second shielding lines and a fixed potential terminal.

[0022] According to an embodiment of the first aspect of this application, the third shielding line and the driver chip are located on different layers.

[0023] According to the first aspect of this application, the third shielding line is disposed on the same layer as the driver chip, and the driver chip is provided with an insulating channel extending along the connection direction between the display area and the bonding area, and at least a portion of the third shielding line passes through the driver chip through the insulating channel.

[0024] According to an embodiment of the first aspect of this application, a first pin is provided on the fixed potential terminal, and the first pin is located on the side of the driver chip away from the display area; the shielding structure also includes a lead located in the bonding area, and two third shielding lines are electrically connected to the first pin through the same lead.

[0025] According to an embodiment of the first aspect of this application, the driver chip is provided with a second pin and a third pin, the second pin being electrically connected to a touch signal line; the display module also includes a drive signal line extending from the display area to the bonding area, the drive signal line being electrically connected to the third pin.

[0026] The second aspect of this application also provides a display device, including the display module provided in any of the first aspect embodiments described above.

[0027] The display module provided in this application embodiment has a shielding structure electrically connected to a fixed potential terminal, and the shielding structure is located on at least one side of the area where the touch signal line is located. The shielding structure with a fixed potential isolates the touch signal line from other surrounding signal lines, improves the electromagnetic shielding effect of the touch signal line, reduces the interference of other signal lines in the bonding area to the touch signal line, and thus improves the touch accuracy and performance of the display module. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a top view structural diagram of a display module provided in an embodiment of this application.

[0030] Figure 2 An example is shown. Figure 1 A magnified view of the display module at position A.

[0031] Figure 3 An example is shown. Figure 2 A cross-sectional view from the perspective of a BB (Black-White) camera.

[0032] Figure 4 An example is shown. Figure 2 A cross-sectional view from a mid-CC perspective.

[0033] Figure 5 An example is shown. Figure 2 A cross-sectional view from the perspective of the middle DD.

[0034] Figure 6 Another example is shown Figure 2 A cross-sectional view from the perspective of the middle DD.

[0035] Figure 7 An example is shown. Figure 2 A cross-sectional view from the perspective of the EE.

[0036] Figure 8 Another example is shown Figure 2 A cross-sectional view from the perspective of the EE.

[0037] Figure 9 Another example is shown Figure 1 A magnified view of the display module at position A.

[0038] Explanation of reference numerals in the attached figures:

[0039] 10. Display module; 101. First metal layer; 102. Second metal layer; 103. Third metal layer; 104. Touch metal layer; 105. First insulating layer; 106. Second insulating layer;

[0040] 100. Substrate;

[0041] 200, driver chip; 210, second pin; 220, third pin;

[0042] 300. Touch control trace; 310. Touch signal line; 311. First touch sub-line; 312. Second touch sub-line; 313. Third touch sub-line; 320. Touch connection line;

[0043] 400, Shielding structure; 401, Shielding opening; 410, First shielding wire; 411, First shielding sub-wire; 420, Second shielding wire; 430, Third shielding wire; 440, Lead wire;

[0044] 500, Fixed potential terminal; 510, First pin;

[0045] 600. Drive signal line;

[0046] 700, Touch structure; 710, First touch electrode; 720, Second touch electrode;

[0047] AA, Display area; NA, Non-display area; BA1, Bending area; BA2, Binding area;

[0048] x, first direction; z, second direction; z, thickness direction. Detailed Implementation

[0049] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0050] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "second", "first", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0051] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0052] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0053] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher height than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower height than the second feature.

[0054] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "first," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0055] To better understand this application, the following will be combined with... Figures 1 to 9 The display module and display device according to embodiments of this application will be described in detail. In the accompanying drawings, the x-direction is a first direction, the y-direction is a second direction, and the z-direction is the thickness direction of the display module. For ease of drawing, the dimensions in the drawings are not necessarily proportional to the actual dimensions.

[0056] Please see Figure 1 and Figure 2 , Figure 1 This is a top view structural diagram of a display module provided in an embodiment of this application. Figure 2 An example is shown. Figure 1 A magnified view of the display module at position A.

[0057] like Figure 1 and Figure 2As shown, an embodiment of the first aspect of this application provides a display module 10. The display module 10 has a display area AA and a non-display area NA located on at least one side of the display area AA. The non-display area NA includes a bending area BA1 and a bonding area BA2 located on the side of the bending area BA1 opposite to the display area AA. The display module 10 includes a substrate 100, a driver chip 200, a touch trace 300, and a shielding structure 400. The driver chip 200 is located on one side of the substrate 100 and in the bonding area BA2. The touch trace 300 is located on the same side of the substrate 100 as the driver chip 200. The touch trace 300 includes a touch connection line 320 and a touch signal line 310. The touch signal line 310 is located in the bonding area BA2 and is electrically connected to the driver chip 200. The touch connection line 320 extends from the display area AA to the bonding area BA2 and is electrically connected to the touch signal line 310. The shielding structure 400 and the touch trace 300 are located on the same side of the substrate 100. The shielding structure is located on at least one side of the area where the touch signal line is located. The shielding structure 400 is electrically connected to the fixed potential terminal 500.

[0058] Optionally, the material of the substrate 100 includes at least one of polyimide (PI) and glass.

[0059] Optionally, the display area AA is completely or partially enclosed by the non-display area NA. In this embodiment, the non-display area NA completely encloses the display area AA as an example, that is, the display area AA is provided with non-display areas NA on the top and bottom sides and the left and right sides.

[0060] The display module 10 provided in this application has a display area AA and a non-display area NA located on at least one side of the display area AA. The non-display area NA includes a bending area BA1 and a bonding area BA2 located on the side of the bending area BA1 opposite to the display area AA. The display module 10 includes a substrate 100, a driver chip 200, a touch trace 300, and a shielding structure 400. The driver chip 200 is located on one side of the substrate 100 and in the bonding area BA2. The touch trace 300 is located on the same side of the substrate 100 as the driver chip 200. The touch trace 300 includes a touch connection line 320 and a touch signal line 310. The touch signal line 310 is located in the bonding area BA2 and is electrically connected to the driver chip 200. The touch connection line 320 extends from the display area AA to the bonding area BA2 and is electrically connected to the touch signal line 310. The shielding structure 400 and the touch trace 300 are located on the same side of the substrate 100. The shielding structure is located on at least one side of the area where the touch signal line is located, and the shielding structure 400 is electrically connected to the fixed potential terminal 500. By setting the shielding structure 400, which is electrically connected to the fixed potential terminal 500, and placing the shielding structure 400 on at least one side of the area where the touch signal line 310 is located, this application utilizes the shielding structure 400 with a fixed potential to isolate the touch signal line 310 from other surrounding signal lines, thereby improving the electromagnetic shielding effect of the touch signal line 310, reducing interference from other signal lines in the bonding area BA2 to the touch signal line 310, and thus improving the touch accuracy and performance of the display module 10.

[0061] In some alternative embodiments, the shielding structure 400 encloses a shielding opening 401, and the orthographic projection of the touch signal line 310 onto the substrate 100 lies within the orthographic projection of the shielding opening 401 onto the substrate 100.

[0062] Optionally, the shielding opening 401 is completely or partially enclosed by the shielding structure 400.

[0063] The display module 10 provided in this application, by setting a shielding structure 400 electrically connected to a fixed potential terminal 500, and by ensuring that the orthogonal projection of the touch signal line 310 located in the bonding area BA2 onto the substrate 100 is within the orthogonal projection of the shielding opening 401 onto the substrate 100, utilizes the shielding structure 400 with a fixed potential to isolate the touch signal line 310 from other surrounding signal lines, thereby improving the electromagnetic shielding effect of the touch signal line 310, reducing the interference of other signal lines in the bonding area BA2 on the touch signal line 310, and thus improving the touch accuracy and performance of the display module 10.

[0064] In some optional embodiments, the driver chip 200 is provided with a second pin 210 and a third pin 220, with the second pin 210 electrically connected to the touch signal line 310. The display module 10 also includes a drive signal line 600 extending from the display area AA to the bonding area BA2, with the drive signal line 600 electrically connected to the third pin 220.

[0065] The driver chip 200 is a Touch and Display Driver Integration (TDDI) chip. The TDDI chip is connected to the touch signal line 310 and the drive signal line 600 via pins 210 and 220, respectively. However, since the touch signal line 310 is connected to the TDDI chip, compared to traditional chips, it cannot be directly electrically connected to the ground terminal. Furthermore, because the drive signal line 600 and the touch signal line 310 are very close in the bonding area, their electromagnetic shielding performance is poor, making the touch signal susceptible to interference from the drive signal. Therefore, this embodiment improves its electromagnetic shielding performance by setting a shielding structure 400.

[0066] Optionally, the orthographic projection of the drive signal line 600 onto the substrate 100 is located outside the orthographic projection of the shielding opening 401 onto the substrate 100.

[0067] Optionally, the orthographic projection of the drive signal line 600 onto the substrate 100 does not overlap with the orthographic projection of the shielding structure 400 onto the substrate 100.

[0068] The display module 10 provided in this application, by employing a TDDI chip for display and touch driving control, facilitates the thinning and lightening of the display module 10, simplifies the manufacturing process of the display module 10, reduces costs, and improves the performance of the display module 10. By setting a shielding structure 400, and ensuring that the orthogonal projection of the driving signal line 600 onto the substrate 100 is outside the orthogonal projection of the shielding opening 401 onto the substrate 100, the shielding structure 400 with a fixed potential isolates the touch signal line 310 from the adjacent driving signal line 600, improving the electromagnetic shielding effect of the touch signal line 310, reducing interference from the driving signal line 600 in the bonding area BA2 to the touch signal line 310, and thereby improving the touch accuracy and performance of the display module 10.

[0069] Please refer to Figures 2 to 4 , Figure 3 An example is shown. Figure 2 A cross-sectional view from the perspective of a BB (Black-White) camera. Figure 4 An example is shown. Figure 2 A cross-sectional view from a mid-CC perspective.

[0070] like Figures 2 to 4As shown, in some optional embodiments, the shielding structure 400 includes a first shielding line 410 and a second shielding line 420. There are two first shielding lines 410, located on opposite sides of the touch signal line 310 in the first direction (x-direction in the figure). The ends of both first shielding lines 410 facing away from the display area AA are electrically connected to the fixed potential terminal 500. The connection direction of the display area AA and the bonding area BA2 (y-direction in the figure) intersects the thickness direction of the display module 10 (z-direction in the figure) and the first direction x in pairs. The second shielding line 420 is located on the side of the touch signal line 310 facing the display area AA, and the ends of the two first shielding lines 410 facing the display area AA are electrically connected via the second shielding line 420. In this embodiment, the connection direction of the display area AA and the bonding area BA2 can be defined as the second direction y.

[0071] Optionally, the fixed potential terminal 500 can be a ground terminal (GND) or a power signal input terminal, wherein the power signal input terminal includes a source voltage signal input terminal (VSS) or a lost voltage signal input terminal (VDD).

[0072] Optionally, the two first shielding wires 410 are electrically connected to the same fixed potential terminal 500, so that the entire shielding structure 400 is at the same potential.

[0073] Optionally, the display module 10 further includes a first metal layer 101, a second metal layer 102, a third metal layer 103, and a touch metal layer 104. The first metal layer 101 is located on one side of the substrate 100, the second metal layer 102 is located between the first metal layer 101 and the substrate 100, the third metal layer 103 is located between the second metal layer 102 and the substrate 100, and the touch metal layer 104 is located on the side of the first metal layer 101 facing away from the substrate 100. An insulating layer is provided between adjacent metal layers. Each metal layer and insulating layer extends from the display area AA to the non-display area NA. A driving device layer is provided on the substrate 100 side of the display area AA. A pixel driving circuit is disposed within the driving device layer, and the pixel driving circuit includes a transistor and a storage capacitor. The transistor includes a semiconductor, a gate, a source, and a drain. The storage capacitor includes a first electrode and a second electrode. As an example, the gate and the first electrode can be located on the third metal layer, the second electrode can be located on the second metal layer, and the source and drain can be located on the first metal layer.

[0074] Optionally, at least a portion of the touch connection line 320 is located in the touch metal layer 104, and at least a portion of the end of the touch signal line 310 facing the touch connection line 320 is located in the first metal layer 101. The touch signal line 310 and the touch connection line 320 are connected through vias in the insulating layer.

[0075] Optionally, the second shielding line 420 is located in the first metal layer 101 and the second shielding line 420 is located in the bonding area BA2. That is, the shielding structure 400 is only located in the bonding area BA2 and does not extend into the bending area BA1, but the shielding structure 400 still surrounds the touch signal line 310.

[0076] The display module 10 provided in this application uses a fixed potential terminal 500 as a ground terminal (GND) or a power signal input terminal to make the shielding structure 400 carry a fixed potential, thereby achieving the shielding function of the shielding structure 400 for the touch signal line 310. By including two first shielding lines 410 located on both sides of the touch signal line 310 in the first direction x and a second shielding line 420 located on the side of the touch signal line 310 facing the display area AA, the first shielding lines 410 and the second shielding lines 420 can together form a shielding opening 401.

[0077] In another embodiment, the second shielding line 420 is located in the bending region BA1, and two first shielding lines 410 extend from the bending region BA1 to the bonding region BA2. At least a portion of the touch connection line 320's orthographic projection on the substrate 100 overlaps with the orthographic projection of the shielding opening 401 on the substrate 100. In this embodiment, by placing the second shielding line 420 within the bending region BA1, the coverage area of ​​the shielding opening 401 is increased, which also improves the electromagnetic shielding performance of a portion of the touch connection line 320.

[0078] In another embodiment, the second shielding line 420 may also be located in the second metal layer 102, the third metal layer 103, or the touch metal layer 104. The second shielding line 420 and the first shielding line 410 can be electrically connected through vias or other connecting wires. In this embodiment, arranging the second shielding line 420 in other metal layers allows for the wiring of the shielding line when wiring in the first metal layer 101 at the bending area BA1 and the bonding area BA2 is difficult. This enables the shielding structure 400 to achieve the electromagnetic shielding function of the touch signal line 310.

[0079] Please refer to Figure 2 , Figure 5 and Figure 6 , Figure 5 An example is shown. Figure 2 A cross-sectional view from the perspective of the middle DD. Figure 6 Another example is shown Figure 2 A cross-sectional view from the perspective of the middle DD.

[0080] In some optional embodiments, the touch signal line 310 includes a first touch sub-line 311 and a second touch sub-line 312 connected in sequence. The first touch sub-line 311 is located in the first metal layer 101, and the second touch sub-line 312 is located in the second metal layer 102. The touch connection line 320 is electrically connected to the driver chip 200 through the first touch sub-line 311 and the second touch sub-line 312.

[0081] Optionally, the display module 10 further includes a first insulating layer 105 and a second insulating layer 106. The first insulating layer 105 is located between the first metal layer 101 and the second metal layer 102, and the second insulating layer 106 is located between the second metal layer 102 and the third metal layer 103. The first touch sub-line 311 and the second touch sub-line 312 are electrically connected through vias on the first insulating layer 105.

[0082] Optionally, the first touch sub-line 311 is located on the side of the second touch sub-line 312 facing the display area AA.

[0083] Optional, such as Figure 5 As shown, the driver chip 200 is located on the third metal layer 103, and the second touch sub-line 312 is electrically connected to the driver chip 200 through a via on the second insulating layer 106.

[0084] Optional, such as Figure 6 As shown, the driver chip 200 is located in the third metal layer 103, and the touch signal line 310 also includes a third touch sub-line 313 located in the third metal layer 103. The third touch sub-line 313 connects the second touch sub-line 312 and the driver chip 200. The third touch sub-line 313 and the second touch sub-line 312 are electrically connected through vias on the second insulating layer 106.

[0085] The display module 10 provided in this application, by setting touch signal lines 310 that cross multiple metal layers step by step, enables the touch signal lines 310 to connect the touch connection line 320 located on the first metal layer 101 and the driver chip 200 located on the third metal layer 103.

[0086] Of course, in other embodiments, the touch connection line 320 and the driver chip 200 can also be set on other metal layers as needed, and the touch signal line 310 can also be adjusted according to the actual wiring situation.

[0087] Please refer to Figure 2 and Figure 7 , Figure 7 An example is shown. Figure 2 A cross-sectional view from the perspective of the EE.

[0088] like Figure 2 and Figure 7As shown, in some alternative embodiments, the first shielding line 410 includes a first shielding sub-line 411 located on at least one side of the first touch sub-line 311 in the first direction x.

[0089] Optionally, the first shielding sub-wire 411 is located in the first metal layer 101.

[0090] Optionally, the first touch sub-line 311 is provided with a first shielding sub-line 411 on both sides of the first touch sub-line in the first direction x, and the first shielding sub-lines 411 located on both sides of the first touch sub-line in the first direction x are arranged in the same layer.

[0091] Optionally, the first shielding line 410 may also include a second shielding sub-line (not shown) located on at least one side of the second touch sub-line 312 in the first direction x. The second shielding sub-line is located in the second metal layer 102, and the first shielding sub-line 411 and the second shielding sub-line are connected through a via on the first insulating layer 105.

[0092] Optionally, the first shielding line 410 also includes a third shielding sub-line (not shown) located on at least one side of the third touch sub-line 313 in the first direction x. The third shielding sub-line is located in the third metal layer 103, and the second shielding sub-line and the third shielding sub-line are connected through a via on the second insulating layer 106.

[0093] Optionally, the orthographic projection of the first shielding sub-line 411 on the substrate 100 is aligned with the two ends of the orthographic projection of the first touch sub-line 311 on the substrate 100 in the second direction y along the first direction x. Similarly, the orthographic projection of the second shielding sub-line on the substrate 100 is aligned with the two ends of the orthographic projection of the second touch sub-line 312 on the substrate 100 in the second direction y along the first direction x, and the orthographic projection of the third shielding sub-line on the substrate 100 is aligned with the two ends of the orthographic projection of the third touch sub-line 313 on the substrate 100 in the second direction y along the first direction x.

[0094] The display module 10 provided in this application improves the electromagnetic shielding effect of the shielding sub-wires on the touch sub-wires by setting the shielding sub-wires on both sides of the touch sub-wires in the same layer as the corresponding touch sub-wires, thereby reducing the interference of other signal lines in the bonding area BA2 on the touch signal line 310, and thus improving the touch accuracy and performance of the display module 10.

[0095] Please refer to Figure 2 and Figure 8 , Figure 8 Another example is shown Figure 2 A cross-sectional view from the perspective of the EE.

[0096] like Figure 2 and Figure 8As shown, in some optional embodiments, the first shielding sub-line 411 and the first touch sub-line are located on different layers. For example, the first shielding sub-line 411 is located on the second metal layer 102 or the third metal layer 103.

[0097] Similarly, the second shielding sub-wire can also be located on a different layer from the second touch sub-wire 312, and the third shielding sub-wire can be located on a different layer from the third touch sub-wire 313.

[0098] The display module 10 provided in this application sets the shielding sub-wires located on both sides of the touch sub-wires on different layers from the corresponding touch sub-wires. When encountering wiring difficulties or other wiring interference, the shielding sub-wires can also be arranged across layers, which can achieve the shielding function of the shielding structure 400. It can also reduce the overall wiring difficulty of the bonding area BA2 and improve the applicability of the shielding structure 400.

[0099] In other embodiments, the first shielding sub-lines 411 located on both sides of the first touch sub-line 311 in the first direction x are not located on the same metal layer. Similarly, the second shielding sub-lines located on both sides of the second touch sub-line 312 in the first direction x may also not be located on the same metal layer, and the third shielding sub-lines located on both sides of the third touch sub-line 313 in the first direction x may also not be located on the same metal layer, further reducing the overall wiring difficulty of the bonding area BA2.

[0100] Please refer to Figure 2 and Figure 9 , Figure 9 Another example is shown Figure 1 A magnified view of the display module at position A.

[0101] In some optional embodiments, the shielding structure 400 further includes two third shielding lines 430, which are respectively connected to two second shielding lines 420 and a fixed potential terminal 500. The third shielding lines 430 are located on the side of the touch signal line 310 away from the display area AA.

[0102] Optionally, the third shielding line 430 and the driver chip 200 are located on different layers. For example, the third shielding line 430 is located on the second metal layer 102, so that the third shielding line 430 can cross the driver chip 200 via the second metal layer 102 and then connect to the fixed potential terminal 500.

[0103] Optionally, the third shielding line 430 is disposed on the same layer as the driver chip 200. The driver chip 200 has an insulating channel (not shown) extending along the second direction y. At least a portion of the third shielding line 430 passes through the driver chip 200 through the insulating channel. In this embodiment, the third shielding line 430 passes through the driver chip 200 using the gap on the driver chip 200 and then connects to the fixed potential terminal 500, eliminating the need for wiring across metal layers.

[0104] Optional, such as Figure 2 As shown, a first pin 510 is provided on the fixed potential terminal 500, and the first pin 510 is located on the side of the driver chip 200 away from the display area AA. Two third shielding lines 430 are electrically connected to the two first pins 510 on the fixed potential terminal 500, respectively.

[0105] Optional, such as Figure 9 As shown, the shielding structure 400 also includes a lead 440 located in the bonding area BA2, and two third shielding lines 430 are electrically connected to the first pin 510 on the fixed potential terminal 500 through the same lead 440.

[0106] like Figures 1 to 9 As shown, in some optional embodiments, the bonding area BA2 is provided with multiple independent touch signal lines 310, and the orthographic projections of the multiple touch signal lines 310 onto the substrate 100 are all located within the orthographic projection of the shielding opening 401 onto the substrate 100. This can be understood as... Figure 2 , Figure 9 The touch signal line 310 is a collection of multiple touch connection lines 320, and each touch signal line 310 is insulated from each other and independent.

[0107] Optionally, the display area AA is provided with a touch structure 700, and multiple touch connection lines 320 and multiple touch signal lines 310 correspond one-to-one and are electrically connected to the touch structure 700.

[0108] Optionally, the touch structure 700 can be a mutual capacitance structure. Specifically, the touch structure 700 includes a plurality of first touch electrodes 710 and a plurality of second touch electrodes 720. The first touch electrodes 710 are spaced apart along a first direction x, and the second touch electrodes 720 are spaced apart along a second direction y. The touch structure 700 also includes a first connecting portion (not shown) and a second connecting portion (not shown). The first connecting portion connects adjacent first touch electrodes 710, and the second connecting portion connects adjacent second touch electrodes 720. That is, a row of first touch electrodes 710 is connected by the first connecting portion to form a first touch unit (not shown), and the display area AA has a plurality of first touch units spaced apart along the second direction y. Similarly, a column of second touch electrodes 720 is connected by the second connecting portion to form a second touch unit (not shown), and the display area AA has a plurality of second touch units spaced apart along the first direction x. A portion of the touch connection lines 320 are electrically connected to each of the first touch units and are divided into two groups, extending from the non-display areas NA on both sides of the display area AA in the first direction x, and finally passing through the bending area BA1 to the bonding area BA2, where they are electrically connected to each touch signal line 310. Another portion of the touch connection lines are electrically connected to each of the second touch units and are directly led from the display area AA towards the bending area BA1, similarly extending through the bending area BA1 to the bonding area BA2, where they are electrically connected to another portion of the touch signal lines 310. The orthographic projections of the first touch electrode 710 and the second touch electrode 720 on the substrate 100 do not overlap, while the orthographic projections of the first connection portion and the second connection portion on the substrate 100 at least partially overlap. The first touch electrode 710, the second touch electrode 720, and the first connecting portion are located on the same metal layer, while the second connecting portion and the first touch electrode 710 are located on different metal layers. An insulating layer is provided between the two metal layers, and two adjacent second touch electrodes 720 are electrically connected to the second connecting portion through vias in the insulating layer. When a user's finger touches the display area AA, the first touch unit and the second touch unit at the corresponding position of the finger generate signals, which are transmitted to the driver chip 200 through the corresponding two touch connection lines 320 and two touch signal lines 310. Since the touch traces 300 correspond one-to-one with the touch units, the specific position of the user's finger touch can be determined based on the unique horizontal and vertical coordinates, thus realizing the touch function of the display module 10.

[0109] Optionally, the first touch electrode 710 can be a driving electrode, while the second touch electrode 720 can be a sensing electrode. Alternatively, the first touch electrode 710 can be a sensing electrode, while the second touch electrode 720 is a driving electrode.

[0110] Optionally, the first touch electrode 710 and the second touch electrode 720 can be in the form of transparent conductive electrodes. For example, the first touch electrode 710 and the second touch electrode 720 can be a metal mesh, which is formed by multiple interwoven metal wires. The metal mesh includes multiple mesh patterns, and each mesh pattern is a polygon composed of multiple metal wires. The metal mesh-type first touch electrode 710 and the second touch electrode 720 have advantages such as low resistance, small thickness, and fast response speed.

[0111] In summary, the display module 10 provided in this application has a display area AA and a non-display area NA located on at least one side of the display area AA. The non-display area NA includes a bending area BA1 and a bonding area BA2 located on the side of the bending area BA1 opposite to the display area AA. The display module 10 includes a substrate 100, a driver chip 200, a touch trace 300, and a shielding structure 400. The driver chip 200 is located on one side of the substrate 100 and in the bonding area BA2. The touch trace 300 is located on the same side of the substrate 100 as the driver chip 200. The touch trace 300 includes a touch connection line 320 and a touch signal line 310. The touch signal line 310 is located in the bonding area BA2 and is electrically connected to the driver chip 200. The touch connection line 320 extends from the display area AA to the bonding area BA2 and is electrically connected to the touch signal line 310. The shielding structure 400 and the touch trace 300 are located on the same side of the substrate 100. The shielding structure 400 encloses and forms a shielding opening 401. The orthographic projection of the touch signal line 310 onto the substrate 100 lies within the orthographic projection of the shielding opening 401 onto the substrate 100. The shielding structure 400 is electrically connected to the fixed potential terminal 500. This application, by setting a shielding structure 400 electrically connected to the fixed potential terminal 500, and ensuring that the orthographic projection of the touch signal line 310 located in the bonding area BA2 onto the substrate 100 lies within the orthographic projection of the shielding opening 401 onto the substrate 100, utilizes the fixed potential shielding structure 400 to isolate the touch signal line 310 from other surrounding signal lines, thereby improving the electromagnetic shielding effect of the touch signal line 310, reducing interference from other signal lines in the bonding area BA2 to the touch signal line 310, and thus improving the touch accuracy and performance of the display module 10.

[0112] The second aspect of this application also provides a display device, including the display module 10 of any of the first aspect embodiments described above. Since the display device provided in the second aspect of this application includes the display module 10 of any of the above embodiments, it possesses the beneficial effects of the display module 10 of any of the above embodiments, which will not be elaborated further here.

[0113] The display devices in this application include, but are not limited to, mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, control consoles, and other devices with display functions.

[0114] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0115] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A display module, characterized in that, The display module has a display area and a non-display area located on at least one side of the display area. The non-display area includes a bending area and a bonding area located on the side of the bending area opposite to the display area. The display module includes: Substrate; The driver chip is located on one side of the substrate and in the bonding region; The touch traces are located on the same side of the substrate as the driver chip. The touch traces include touch connection lines and touch signal lines. The touch signal lines are located in the bonding area and are electrically connected to the driver chip. The touch connection lines extend from the display area to the bonding area and are electrically connected to the touch signal lines. A shielding structure is located on the same side of the substrate as the touch trace, the shielding structure is located on at least one side of the area where the touch signal line is located, and the shielding structure is electrically connected to a fixed potential terminal.

2. The display module according to claim 1, characterized in that, The shielding structure encloses and forms a shielding opening, and the orthographic projection of the touch signal line on the substrate is located within the orthographic projection of the shielding opening on the substrate; Preferably, the bonding area is provided with multiple independent touch signal lines, and the orthographic projection of the multiple touch signal lines on the substrate is located within the orthographic projection of the shielding opening on the substrate; Preferably, the display area is provided with a touch structure, and multiple touch connection lines correspond one-to-one with multiple touch signal lines and are all electrically connected to the touch structure.

3. The display module according to claim 1, characterized in that, The shielding structure includes: There are two first shielding lines, which are located on both sides of the touch signal line in the first direction. The ends of the two first shielding lines away from the display area are electrically connected to the fixed potential terminal. The connection direction of the display area and the bonding area intersects the thickness direction of the display module and the first direction in pairs. The second shielding wire is located on the side of the touch signal line facing the display area, and the two ends of the first shielding wires facing the display area are electrically connected through the second shielding wire. Preferably, the fixed potential terminal is a ground terminal or a power signal input terminal; Preferably, the two first shielding wires are connected to the same fixed potential terminal.

4. The display module according to claim 3, characterized in that, The display module also includes: A first metal layer is located on one side of the substrate; A second metal layer is located between the first metal layer and the substrate; The touch signal line includes a first touch sub-line and a second touch sub-line connected in sequence. The first touch sub-line is located in the first metal layer, and the second touch sub-line is located in the second metal layer. The touch connection line is electrically connected to the driver chip through the first touch sub-line and the second touch sub-line. Preferably, the display module further includes a first insulating layer, which is located between the first metal layer and the second metal layer, and the first touch sub-wire and the second touch sub-wire are electrically connected through a via on the first insulating layer.

5. The display module according to claim 4, characterized in that, The first shielding line includes a first shielding sub-line located on at least one side of the first touch sub-line in the first direction; Preferably, the first shielding sub-wire is located in the first metal layer; Preferably, the first shielding sub-wire and the first touch sub-wire are located on different layers; Preferably, the first shielding sub-lines located on both sides of the first touch sub-line in the first direction are arranged in the same layer.

6. The display module according to claim 4, characterized in that, The display module also includes: A third metal layer is located between the second metal layer and the substrate, and the driver chip is located on the third metal layer; A second insulating layer is located between the second metal layer and the third metal layer; Preferably, the second touch sub-line is electrically connected to the driver chip through a via on the second insulating layer; Preferably, the touch signal line further includes a third touch sub-line located on the third metal layer, the third touch sub-line connecting the second touch sub-line and the driver chip, and the third touch sub-line and the second touch sub-line being electrically connected through a via on the second insulating layer.

7. The display module according to claim 3, characterized in that, The shielding structure also includes: There are two third shielding wires, and the two third shielding wires are respectively connected to the two second shielding wires and the fixed potential terminal; Preferably, the third shielding line is located on a different layer from the driver chip; Preferably, the third shielding line is disposed on the same layer as the driver chip, and the driver chip is provided with an insulating channel extending along the line connecting the display area and the bonding area, and at least a portion of the third shielding line passes through the driver chip through the insulating channel.

8. The display module according to claim 7, characterized in that, The fixed potential terminal is provided with a first pin, and the first pin is located on the side of the driver chip away from the display area; The shielding structure also includes a lead located in the bonding area, and the two third shielding wires are electrically connected to the first pin through the same lead.

9. The display module according to claim 1, characterized in that, The driver chip has a second pin and a third pin, and the second pin is electrically connected to the touch signal line. The display module also includes a drive signal line extending from the display area to the bonding area, and the drive signal line is electrically connected to the third pin.

10. A display device, characterized in that, Includes the display module as described in any one of claims 1 to 9.

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