Display panel and display device

Abstract

The present disclosure provides a display panel and a display device, wherein the display panel includes a flexible substrate, the flexible substrate includes a display unit and a bending unit connected to the display unit and capable of being bent to the back of the display unit, the bending unit includes a multiplexer, a chip and a flexible circuit board arranged in sequence in a downward direction away from the bending position, the flexible circuit board includes a ground terminal capable of providing a ground signal, a metal shielding layer is arranged on the surface of the multiplexer away from the flexible substrate, and an insulating layer for insulation isolation is arranged between the metal shielding layer and the multiplexer, and the metal shielding layer is connected to the ground terminal to shield signal interference. The display panel and the display device provided by the present disclosure can shield electromagnetic signal interference, improve performance, and reduce or eliminate the application of absorbing materials, thereby reducing costs.

Description

Technical Field

[0001] This disclosure relates to the field of displays, and more particularly to a display panel and a display device. Background Technology

[0002] With the development of the display industry, full-screen displays are gradually becoming the trend. Panel technology is shifting from COF (Chip On Flex or Chip On Film, often called flip-chip film, a chip-on-film packaging technology that fixes the driver IC chip on a flexible circuit board, using a flexible additional circuit board as the chip carrier to bond the chip to the flexible substrate circuit) to COP (Chip On Pi, the back panel of flexible OLED screens is not the glass unique to LCDs, but uses materials similar to FPC flexible boards, which are flexible and can be rolled up at will. Therefore, COP-packaged screens can directly fold the back panel backward on the basis of COF, thereby minimizing the space occupied by the screen module on the "chin"), which can effectively narrow the bottom bezel of the panel. Among them, the COF process transfers the IC chip from the panel to the ribbon cable, and the IC can be bent to the back with the ribbon cable, but this process is more expensive. With the development of OLED flexible screens, the flexibility of the display makes COP technology possible. Flexible materials allow the IC to be folded directly backward, thereby achieving a narrower bezel and realizing a full-screen display.

[0003] After the module section is assembled, the IC driver is activated, and the multiplexer signal interferes with the antenna signal at the rear of the assembly, causing adverse effects. Although this adverse effect can be slightly mitigated by applying absorbing material at the bending points, it also increases the product cost. Summary of the Invention

[0004] The purpose of this disclosure is to overcome the problems of signal interference and high product cost in related technologies, and to provide a display panel that can shield electromagnetic interference, improve performance, and replace absorbing materials, thereby reducing costs.

[0005] Another object of this disclosure is to provide a display device including the above-described display panel.

[0006] To achieve the above objectives, this disclosure provides a display panel including a flexible substrate. The flexible substrate includes a display unit and a bending unit connected to the display unit and capable of being bent to the back of the display unit. The bending unit includes a multiplexer, a chip, and a flexible circuit board arranged sequentially in a direction away from the bending position. The flexible circuit board includes a ground terminal capable of providing a ground signal. A metal shielding layer is disposed on the surface of the multiplexer away from the flexible substrate, and an insulating layer for insulation and isolation is disposed between the metal shielding layer and the multiplexer. The metal shielding layer is connected to the ground terminal to shield signal interference.

[0007] In some embodiments, the area of ​​the metal shielding layer projected onto the flexible substrate is larger than the area of ​​the multiplexer projected onto the flexible substrate and covers the projected area of ​​the multiplexer onto the flexible substrate.

[0008] In some embodiments, the metal shielding layer is electrically connected to the grounding terminal via a conductive wire.

[0009] In some embodiments, the metal shielding layer is formed of a metal coating layer, and a planarization layer is present between the metal shielding layer and the multiplexer.

[0010] In some embodiments, the display panel includes a first source-drain metal layer and a second source-drain metal layer, the first source-drain metal layer and the second source-drain metal layer are connected in parallel, and the metal shielding layer has a passivation layer and a planarization layer between it and the multiplexer, the metal shielding layer being a portion of the second source-drain metal layer.

[0011] In some embodiments, a touch metal layer disposed on the flexible substrate and connected to the ground terminal is further included, wherein the metal shielding layer is a metal layer of the touch metal layer.

[0012] In some embodiments, the metal shielding layer is a first touch metal layer, and the film layer between the first touch metal layer and the multiplexer includes a first insulating layer, an encapsulation layer, and an interlayer dielectric layer.

[0013] In some embodiments, the metal shielding layer is a second touch metal layer, and the film layer between the second touch metal layer and the multiplexer includes a first insulating layer, a second insulating layer, an encapsulation layer, and an interlayer dielectric layer.

[0014] In some embodiments, the multiplexer includes a first source-drain metal layer.

[0015] In some embodiments, the multiplexer further includes an active layer and a gate layer, wherein the first source-drain metal layer is electrically connected to the active layer.

[0016] In some embodiments, a test structure is provided on the bending unit, the test structure is disposed between the bending position and the metal shielding layer, and the test structure is electrically connected to the display unit for testing the display unit.

[0017] A second aspect of this disclosure provides a display device including the display panel described above.

[0018] Compared with the prior art, the beneficial effects of this disclosure are as follows:

[0019] 1. The bending unit of the display panel described in this embodiment includes a metal shielding layer disposed on the surface of the multiplexer away from the flexible substrate and an insulating layer disposed between the metal shielding layer and the multiplexer for insulation and isolation. The metal shielding layer is connected to the ground terminal to shield signal interference, thereby realizing the shielding function and avoiding the problem of mutual interference between the multiplexer and the module antenna signal.

[0020] 2. The display panel described in this embodiment solves the electromagnetic signal interference problem through a metal shielding layer and an insulating isolation layer, improves the performance of the product, and reduces or eliminates the need for absorbing materials, thereby reducing costs.

[0021] 3. The display panel described in this embodiment adopts a dual SD structure, which has good anti-interference ability, reduces signal attenuation during transmission, and ensures good uniformity of image display.

[0022] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0023] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar components in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar components. The accompanying drawings generally illustrate various embodiments by way of example and not limitation, and together with the description and claims, serve to illustrate the disclosed embodiments. Where appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive of the embodiments of the present apparatus or method.

[0024] Figure 1 This is a partial structural diagram of the display panel disclosed herein.

[0025] Figure 2 This is a schematic diagram of another partial structure of the display panel disclosed herein.

[0026] Figure 3(a) is a schematic diagram of the specific film layer between the metal shielding layer and the multiplexer of the display panel in Embodiment 1 of this disclosure.

[0027] Figure 3(b) is a schematic diagram of the specific film layer between the metal shielding layer and the multiplexer of the display panel in Embodiment 2 of this disclosure.

[0028] Figure 3(c) is a schematic diagram of the specific film layer between the metal shielding layer and the multiplexer of the display panel in Embodiment 3 of this disclosure.

[0029] Figure 3(d) is a schematic diagram of the specific film layer between the metal shielding layer and the multiplexer of the display panel in Embodiment 4 of this disclosure.

[0030] Figure label:

[0031] 1-Display unit; 2-Bending unit; 3-Grounding terminal; 4-Tracking signal terminal; 5-Touch grounding terminal; P-Bending position; 21-Multiple choice; 22-Chip; 23-Flexible circuit board; 24-Test structure; 25-Metal shielding layer; 26-First insulating layer; 27-Touch metal layer; 28-Second insulating layer; 29-Encapsulation layer; 30-Interlayer dielectric layer. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solutions of this disclosure, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and specific examples, but this is not intended to limit this disclosure.

[0033] The terms "first," "second," and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0034] In this disclosure, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may be not directly connected to the other devices but have an intermediary device.

[0035] All terms (including technical or scientific terms) used in this disclosure have the same meaning as those understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined herein.

[0036] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0037] This disclosure provides a display panel including a flexible substrate. The flexible substrate includes a display unit 1 and a bending unit 2 connected to the display unit 1 and capable of being bent to the back of the display unit 1. The bending unit 2 includes a multiplexer 21, a chip 22, and a flexible circuit board 23 arranged sequentially in a direction below the bending position P. Pins extending from the display unit 1 are connected to corresponding pins of the chip 22 via the multiplexer 21. The flexible circuit board 23 includes a ground terminal 3 capable of providing a ground signal, and an internal operating voltage VDD and a common ground voltage VSS are connected to the flexible circuit board 23. A metal shielding layer 25 is disposed on the surface of the multiplexer 21 away from the flexible substrate, and a first insulating layer 26 for insulation and isolation is disposed between the metal shielding layer 25 and the multiplexer 21. The metal shielding layer 25 is connected to the ground terminal 3 to shield signal interference. In some embodiments, the insulating layer includes a passivation layer PVX and / or a planarization layer PLN, etc.

[0038] In the above technical solution, a metal shielding layer 25 is provided on the surface of the multiplexer 21 away from the flexible substrate, and a first insulating layer 26 for insulation and isolation is provided between the metal shielding layer 25 and the multiplexer 21. The metal shielding layer 25 is connected to the grounding terminal 3 through a wire, thereby realizing the shielding function, avoiding the problem of mutual interference between the multiplexer 21 and the module antenna signal, improving the performance of the product, and replacing the absorbing material, thereby reducing the cost.

[0039] To achieve better shielding, in some embodiments, the area of ​​the metal shielding layer 25 projected onto the flexible substrate is larger than the area of ​​the multiplexer 1 projected onto the flexible substrate and covers the projected area of ​​the multiplexer 1 onto the flexible substrate.

[0040] Example 1

[0041] like Figure 1As shown, in Embodiment 1 of this disclosure, the multiplexer 21 is positioned below the bending position P, adjacent to the IC chip 22. By positioning the multiplexer 21 below the bending position P, it is folded to the back of the panel after bending, resulting in a more compact size design while maintaining a larger screen-to-body ratio. Furthermore, positioning the multiplexer 21 adjacent to the IC chip 22 reduces interference during signal transmission, lowers output impedance, reduces signal attenuation, and improves signal clarity.

[0042] The multiplexer 21 is composed of a first source-drain metal layer SD1, etc.; the first source-drain metal layer SD1 has a Ti-Al-Ti structure; it has good conductivity and low impedance; it can reduce power consumption and signal attenuation during signal transmission; the multiplexer 21 also includes an active layer source and a gate layer gate, with a gate insulating layer GI between the active layer source and the gate layer gate, and the first source-drain metal layer SD1 is electrically connected to the active layer source.

[0043] The first source-drain metal layer SD1 serves as a signal line running through the entire panel, including a Data signal line, a Goa signal line, an internal operating voltage VDD signal line, or a common ground voltage VSS signal line. The first source-drain metal layer SD1 is covered by a first insulating layer 26 on its surface away from the flexible substrate. The first insulating layer 26 is typically a PLN planarization layer, which is an insulating material. The PLN planarization layer is used to isolate the first source-drain metal layer SD1 and the metal shielding layer 25, preventing short circuits between them. An LG metal coating layer is used as the metal shielding layer 25, which covers the insulating layer. Figure 3(a) shows a schematic diagram of the specific film layers between the metal shielding layer 25 and the multiplexer 21 in the above embodiment of this disclosure.

[0044] like Figure 1 As shown, the flexible circuit board 23 (FPC) connects the internal operating voltage VDD and the common ground voltage VSS of the display unit 1, and provides the pin (GND) of the ground terminal 3; the metal shielding layer 25 is connected to the flexible circuit board 23 through the pin of the ground terminal 3 (GND), and shares the same ground with the flexible circuit board 23, which can effectively prevent signal distortion and disorder caused by noise interference caused by ground potential difference.

[0045] The area of ​​the LG-coated metal layer projected onto the flexible substrate is larger than the area of ​​the multiplexer 1 projected onto the flexible substrate and covers the projected area of ​​the multiplexer 1 onto the flexible substrate. The LG-coated metal layer forms a shielding layer above the multiplexer 21, and the entire area of ​​the LG-coated metal layer is grounded, which can absorb and shield the signal interference of the module antenna signal to the multiplexer 21.

[0046] A test unit 24 is set between the multiplexer 21 and the bending position P. The test unit 24 is used to test whether the display unit 1 can work normally. The multiplexer 21 and the test unit 24 are designed in the bending unit and are folded to the back of the panel after bending. This makes the size design more compact and the screen ratio larger. As a result, the distance between the IC (chip) of the mobile terminal screen and the mobile terminal antenna is relatively close, which can realize a full screen to a greater extent.

[0047] After the display panel of this disclosure is assembled into a module, it can input a GND signal when the power is turned on, which can shield the signal interference between the multiplexer 21 and the module antenna.

[0048] Example 2

[0049] like Figure 1 As shown, in Embodiment 2 of this disclosure, the multiplexer 21 is disposed below the bending position P, adjacent to the IC chip 22; the multiplexer 21 includes a first source-drain metal layer SD1 covering the surface; the multiplexer SD1 also includes an active layer source and a gate layer gate, with a gate insulating layer GI between the active layer source and the gate layer gate, and the first source-drain metal layer SD1 is electrically connected to the active layer source.

[0050] The first source-drain metal layer SD1 has a Ti-Al-Ti structure; the first source-drain metal layer SD1 serves as a signal line that runs through the entire display panel, including Data signal lines, Goa signal lines, internal working voltage VDD signal lines, or common ground voltage VSS signal lines; a passivation layer and a planarization layer are covered on top of the first source-drain metal layer SD1 as a first insulating layer 26; the first insulating layer 26 is typically made of an insulating flexible material.

[0051] Figure 3(b) shows a schematic diagram of the specific film layers between the metal shielding layer 25 and the multiplexer 21 in the above-described embodiment of the present disclosure. The difference from Embodiment 1 is that a second source-drain metal layer SD2 covers the first insulating layer 26, and the metal shielding layer 25 is formed by the second source-drain metal layer SD2.

[0052] like Figure 1 As shown, the area of ​​the metal shielding layer 25 projected onto the flexible substrate is larger than the area of ​​the multiplexer 21 projected onto the flexible substrate and covers the projected area of ​​the multiplexer 21 onto the flexible substrate.

[0053] The flexible printed circuit board 23 (FPC) connects to the internal operating voltage VDD and the common ground voltage VSS of the display unit, providing a ground terminal 3 pin (GND). The second source-drain metal layer SD2 is connected to the pin (GND) of the flexible printed circuit board 23 through the ground terminal 3, sharing a common ground with the flexible printed circuit board 23. The second source-drain metal layer SD2 covers the entire multiplexer 21, serving as a signal line that runs through the entire display panel, including Data signal lines, GOA signal lines, internal operating voltage VDD signal lines, or common ground voltage VSS signal lines. The second source-drain metal layer SD2 is connected in parallel with the first source-drain metal layer SD1.

[0054] A test unit 24 is provided between the multiplexer 21 and the bending position P. The test unit 24 is used to test whether the display unit 1 can work normally.

[0055] After the display panel of this disclosure is assembled into a module, it can input a GND signal when the power is turned on, which can shield the signal interference between the multiplexer 21 and the module antenna.

[0056] With the advent of full-screen displays, the bezels of display panels are made very narrow. This narrows the internal operating voltage VDD signal line, increasing its impedance. During transmission from the bottom to the top of the display panel, the increased impedance causes power loss and voltage drop, affecting the uniformity of the displayed image. Embodiment 2 of this disclosure uses a parallel connection between the second source-drain metal layer SD2 and the first source-drain metal layer SD1 to widen the internal operating voltage VDD signal line. This reduces impedance and voltage drop during transmission of the internal operating voltage VDD signal from the bottom to the top of the display panel, ensuring uniformity of the displayed image.

[0057] Example 3

[0058] like Figure 2 As shown, Embodiment 3 of this disclosure includes a multilayer flexible metal layer disposed on the flexible substrate and capable of conducting signals. The multilayer flexible metal layer includes at least one touch metal layer 27 connected to the FMLOC touch ground terminal 5. The metal shielding layer 25 is a portion of the at least one touch metal layer 27. The formation method of the at least one touch metal layer 27 in this embodiment is suitable for bendable display panel products with a single source / drain metal layer and containing an FMLOC flexible metal layer. The specific structure is as follows:

[0059] As previously described, the multiplexer 21 is positioned below the bend position P, adjacent to the IC chip 22. The multiplexer 21 includes a first source-drain metal layer SD1. The first source-drain metal layer SD1 has a Ti-Al-Ti structure. The first source-drain metal layer SD1 serves as a signal line that runs through the entire panel, including a Data signal line, a Goa signal line, an internal working voltage VDD signal line, and a common ground voltage VSS signal line. The first source-drain metal layer SD1 is sequentially covered by a first insulating layer 26, a TFE encapsulation layer 29, and a TLD interlayer dielectric layer 30. The first insulating layer 26 includes a PLN planarization layer. The interlayer dielectric layer 30 includes an FMLOC Barrier flexible shielding layer. The first insulating layer 26 is typically made of an inorganic insulating material.

[0060] The interlayer dielectric layer 30 is covered by a metal shielding layer 25; the metal shielding layer 25 is the first touch metal layer among at least one touch metal layer 27, and the first touch metal layer is made of flexible metal TSP Metal A, abbreviated as TMA; Figure 3(c) shows a schematic diagram of the specific film layer between the metal shielding layer 25 and the multiplexer 21 in the above-described embodiment of the present disclosure.

[0061] like Figure 2 As shown, the flexible circuit board 23 (FPC) connects the internal operating voltage VDD and common ground voltage VSS of the display unit 1, the FMLOC Trace Signal terminal 4 and the FMLOC GND Signal touch ground terminal 5.

[0062] The first touch metal layer TMA is connected to the touch ground terminal 5 via a conductive line, which can effectively prevent signal distortion and disorder caused by noise interference due to ground potential difference; and reduce the number of pins of the flexible circuit board 23 (FPC).

[0063] The area of ​​the first touch metal layer TMA projected onto the flexible substrate is larger than the area of ​​the multiplexer 21 projected onto the flexible substrate, and it covers the projected area of ​​the multiplexer 21 onto the flexible substrate. The first touch metal layer TMA forms a shielding layer above the multiplexer 21. The first touch metal layer TMA is connected to the FMLOC GND Signal touch ground terminal 5, which can absorb and shield the signal interference of the module antenna signal to the multiplexer 21.

[0064] After the display panel of this disclosure is assembled into a module, it can input a GND signal when the power is turned on, which can shield the signal interference between the multiplexer 21 and the module antenna.

[0065] Example 4

[0066] like Figure 2 As shown, the display panel of this embodiment uses a second touch metal layer as a metal shielding layer 25, based on embodiment 3. The metal shielding layer 25 is formed in a manner suitable for panel products containing FMLOC (Flexible, Bendable Panel Technology) that simultaneously have a first source-drain metal layer SD1 and a second source-drain metal layer SD2. The specific structure is as follows:

[0067] As previously described, the multiplexer 21 is positioned below the bend position P, adjacent to the IC chip 22. The multiplexer 21 includes a first source-drain metal layer SD1 covering the surface. The first source-drain metal layer SD1 has a Ti-Al-Ti structure. The first source-drain metal layer SD1 serves as a signal line that runs through the entire panel, including Data signal lines, Goa signal lines, internal operating voltage VDD signal lines, or common ground voltage VSS signal lines. A PLN planarization layer is covered above the first source-drain metal layer SD1. In some embodiments, an additional layer is covered on top of the PLN planarization layer. A PVX inorganic passivation layer, the PLN planarization layer and / or the PVX inorganic passivation layer serve as a first insulating layer 26; a second source-drain metal layer SD2 is covered above the first insulating layer 26; a second insulating layer 28 is disposed on the second source-drain metal layer SD2, the second insulating layer 28 is also typically made of insulating material, and sequentially includes a PVX inorganic passivation layer, a PLN1 first planarization layer and a PLN2 second planarization layer; a TFE encapsulation layer 29 is covered above the second insulating layer 28; a TLD interlayer dielectric layer 30 is disposed above the encapsulation layer 29; the TLD interlayer dielectric 30 includes an FMLOC Barrier flexible shielding layer and an FMLOC ILD flexible dielectric; a metal shielding layer 25 is covered above the interlayer dielectric layer 30, the metal shielding layer 25 is a second touch metal layer, the second touch metal layer is a flexible metal TSP Metal B, abbreviated as TMB; Figure 3(d) shows a schematic diagram of the specific film layers between the metal shielding layer 25 and the multiplexer 21 in the above embodiment of the present disclosure.

[0068] like Figure 2 As shown, the second touch metal layer TMB covers the entire multiplexer 21. The area of ​​the second touch metal layer TMB projected onto the flexible substrate is larger than the area of ​​the multiplexer 21 projected onto the flexible substrate, and it covers the projected area of ​​the multiplexer 21 onto the flexible substrate. The second touch metal layer TMB forms a shielding layer above the multiplexer 21.

[0069] The flexible circuit board 23 (FPC) connects the internal operating voltage VDD and common ground voltage VSS of the display unit 1, the FMLOC Trace Signal terminal 4, and the FMLOC GND Signal touch ground terminal 5.

[0070] The second touch metal layer TMB is connected to the FMLOC GND Signal touch ground terminal 5 in close proximity, which can effectively prevent signal distortion and disorder caused by noise interference due to ground potential difference; and reduce the number of pins on the flexible circuit board 23 (FPC). The connection of the second touch metal layer TMB to the FMLOC GND Signal touch ground terminal 5 can absorb and shield the signal interference of the module antenna signal to the multiplexer 21, effectively preventing interference between signals, and therefore the parasitic capacitance between the metal layers is smaller compared to embodiments 1-3.

[0071] To ensure the proper functioning of the display unit 1, in some embodiments, the bending unit 2 includes a test structure 24. The test structure 24 is disposed between the bending position P and the metal shielding layer 25, and is connected to the display unit 1 for testing the display unit 1. By incorporating the panel's test structure, multiplexer 21, etc., into the bending unit, which is then folded to the back of the panel after bending, the size design becomes more compact, while maintaining a larger screen-to-body ratio. This results in a closer proximity between the mobile terminal's IC (chip) and antenna, enabling a more comprehensive full-screen display.

[0072] After the display panel of this disclosure is assembled into a module section, the input of the GND signal can shield the signal interference between the multiplexer 21 and the module antenna.

[0073] A second aspect of this disclosure provides a display device including the display panel of embodiments 1-4 described above. In some embodiments, the display device includes a mobile phone, computer, tablet, and television, etc. Since the display device includes the aforementioned display panel, it has at least or some of the beneficial effects of the aforementioned display panel.

[0074] Furthermore, although exemplary embodiments have been described herein, their scope includes any and all embodiments based on this disclosure that have equivalent elements, modifications, omissions, combinations (e.g., schemes involving intersections of various embodiments), adaptations, or alterations. Elements in the claims will be interpreted broadly based on the language used in the claims and are not limited to the examples described in this specification or during the implementation of this application, and such examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered illustrative only, and the true scope and spirit are indicated by the full scope of the following claims and their equivalents.

[0075] The above description is intended to be illustrative and not restrictive. For example, the above examples (or one or more thereof) can be used in combination with each other. Other embodiments may be used by those skilled in the art upon reading the above description. Furthermore, in the above detailed description, various features may be grouped together to simplify the disclosure. This should not be construed as an intention that a feature of the disclosure that is not claimed is necessary for any claim. Rather, the subject matter of this disclosure may be less than all the features of a particular disclosed embodiment. Thus, the following claims are incorporated herein by reference as examples or embodiments, wherein each claim is independently considered as a separate embodiment, and these embodiments are contemplated to be combined or arranged in various ways. The scope of this disclosure should be determined by reference to the appended claims and the full scope of their equivalents.

[0076] The above embodiments are merely exemplary embodiments of this disclosure and are not intended to limit this disclosure. The scope of protection of this disclosure is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this disclosure within its substance and scope, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this disclosure.

Claims

1. A display panel, characterized in that: The flexible substrate includes a display unit, a bending unit connected to the display unit and capable of being bent to the back of the display unit, a multiplexer, a chip and a flexible circuit board are sequentially arranged on the bending unit in a direction away from the bending position, the flexible circuit board includes a ground terminal capable of providing a ground terminal signal, a metal shielding layer is arranged on a surface of the multiplexer away from the flexible substrate, and an insulating layer for insulation isolation is arranged between the metal shielding layer and the multiplexer, and the metal shielding layer is connected to the ground terminal to shield signal interference; The metal shielding layer is electrically connected to the ground terminal through a conductive wire; The display panel comprises a first source-drain metal layer and a second source-drain metal layer, the first source-drain metal layer and the second source-drain metal layer are connected in parallel, a passivation layer and a flat layer are provided between the metal shielding layer and the multiplexer, and the metal shielding layer is part of the second source-drain metal layer; The metal shielding layer is connected to the flexible circuit board through the grounding pin and shares a common ground with the flexible circuit board.

2. The display panel according to claim 1, wherein: The area of ​​the orthographic projection of the metal shielding layer on the flexible substrate is larger than the area of ​​the orthographic projection of the multiplexer on the flexible substrate and covers the orthographic projection of the multiplexer on the flexible substrate.

3. The display panel according to claim 1, wherein: The metal shielding layer is formed by a metal coating layer, and a flat layer is provided between the metal shielding layer and the multiplexer.

4. The display panel according to claim 1, wherein: The multiplexer includes a first source-drain metal layer.

5. The display panel according to claim 4, wherein: The multiplexer further includes an active layer and a gate layer, and the first source-drain metal layer is electrically connected to the active layer.

6. The display panel according to any one of claims 1 to 5, characterized in that: A test structure is arranged on the bending unit, the test structure is arranged between the bending position and the metal shielding layer, and the test structure is electrically connected to the display unit for testing the display unit.

7. A display device, characterized in that: The invention comprises a display panel according to any one of claims 1 to 6.

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