Display panel and display apparatus

Abstract

A display panel and a display apparatus. One end of a first signal transmission part (21) is connected to a binding part (12), and the other end thereof is bent towards the side of the binding part (12) away from the display part (11) and is connected to a second signal transmission part (22), the orthographic projection of the second signal transmission part (22) on the display part (11) at least partially overlapping with the orthographic projection of the binding part (12) on the display part (11). The second signal transmission part (22) comprises a connection surface (220) connected to the first signal transmission part (21), and the first signal transmission part (21) is connected to the side of the connection surface (220) close to the binding part (12).

Description

Display panel and display device Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] Organic Light Emitting Display (OLED) devices are considered to be an emerging application technology for the next generation of flat-panel displays due to their excellent characteristics, including self-luminescence, no need for a backlight, high contrast, thinness, wide viewing angle, fast response, compatibility with flexible panels, wide operating temperature range, and relatively simple structure and process.

[0003] Typically, after the flexible circuit board is bound to the display panel, the bound portion needs to be bent to the back side of the display panel. However, the flexible circuit board still occupies a large space in the direction parallel to the display panel, greatly reducing the usable space for other devices or structures. SUMMARY OF THE INVENTION

[0004] Embodiments of the present application provide a display panel and a display device, which can reduce the space occupied by a flexible circuit board in a direction parallel to a display portion, thereby improving the space utilization of the display panel.

[0005] The present invention further provides a display panel, comprising:

[0006] The panel body includes a display portion, a bending portion, and a binding portion, wherein the binding portion is provided on one side of the display portion, one end of the bending portion is connected to the display portion, and the other end is bent toward a side of the display portion close to the binding portion and connected to the binding portion;

[0007] a flexible circuit board connected to the binding portion and comprising a first signal transmission portion and a second signal transmission portion connected thereto;

[0008] Among them, one end of the first signal transmission part is connected to the binding part, and the other end is bent toward the side of the binding part away from the display part, and is connected to the second signal transmission part. The orthographic projection of the second signal transmission part on the display part at least partially overlaps with the orthographic projection of the binding part on the display part. The second signal transmission part includes a connecting surface connected to the first signal transmission part, and the first signal transmission part is connected to the side of the connecting surface close to the binding part.

[0009] According to the above-mentioned purpose of the present application, an embodiment of the present application further provides a display device, wherein the display device includes a display panel and a functional component;

[0010] The display panel includes:

[0011] The panel body includes a display portion, a bending portion, and a binding portion, wherein the binding portion is provided on one side of the display portion, one end of the bending portion is connected to the display portion, and the other end is bent toward a side of the display portion close to the binding portion and connected to the binding portion;

[0012] a flexible circuit board connected to the binding portion and comprising a first signal transmission portion and a second signal transmission portion connected thereto;

[0013] wherein one end of the first signal transmission portion is connected to the binding portion, and the other end is bent toward a side of the binding portion away from the display portion and connected to the second signal transmission portion, an orthographic projection of the second signal transmission portion on the display portion at least partially overlaps with an orthographic projection of the binding portion on the display portion, the second signal transmission portion includes a connecting surface connected to the first signal transmission portion, and the first signal transmission portion is connected to a side of the connecting surface close to the binding portion;

[0014] The functional component is arranged on a side of the display portion close to the binding portion and located on a side of the binding portion away from the bending portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG1 is a schematic structural diagram of a display panel provided in an embodiment;

[0016] FIG2 is a schematic diagram of a back plane structure of a display panel provided in an embodiment;

[0017] FIG3 is a schematic structural diagram of a display panel provided in an embodiment of the present application;

[0018] FIG4 is a schematic diagram of a back plane structure of a display panel provided in an embodiment of the present application;

[0019] FIG5 is a schematic structural diagram of a flexible circuit board in an unbent state in a display panel provided by an embodiment of the present application;

[0020] FIG6 is a schematic structural diagram of a display device provided in an embodiment of the present application. Modes for Carrying Out the Invention

[0021] In the following detailed description, only certain embodiments of the present application are shown and described simply by way of illustration. As will be appreciated by those skilled in the art, the embodiments described herein may be modified in various ways without departing from the spirit or scope of the present application.

[0022] In the drawings, the thickness of layers, films, panels, regions, etc. may be exaggerated for clarity, better understanding, and ease of description. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present.

[0023] In addition, unless explicitly described to the contrary, the word "comprise" and its variations such as "comprising" or "containing" will be understood to imply the inclusion of the elements discussed but not necessarily the exclusion of other elements. Further, in the specification, the word "on..." refers to placement above or below an object part, and does not necessarily mean placement on the upper side of the object part based on the direction of gravity.

[0024] It will be understood that although the terms "first", "second", etc. may be used herein to describe various components, these components should not be limited by these terms. These terms are only used to distinguish one component from another.

[0025] As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0026] It will also be understood that the terms “comprises” and / or “comprising” used herein specify the presence of stated features or components, but do not preclude the presence or addition of one or more other features or components.

[0027] It will be understood that when a layer, region or component is referred to as being “formed on” another layer, region or component, it can be directly or indirectly formed on the other layer, region or component. For example, intervening layers, regions or components may be present.

[0028] In the following examples, the x-axis, y-axis, and z-axis are not limited to the three axes of the rectangular coordinate system and can be interpreted in a broader sense. For example, the x-axis, y-axis, and z-axis can be perpendicular to each other or can represent different directions that are not perpendicular to each other.

[0029] Please refer to Figures 1 and 2. After the panel body 1 in the display panel is bound with the flexible circuit board 2 and the driver chip 3, the bound part of the panel body 1 is often bent to the back side of the panel body 1. After the flexible circuit board 2 is bent to the back side along with the panel body 1, the flexible circuit board 2 will extend along the horizontal direction X and be attached to the back side of the panel body 1 through the adhesive layer 4. The size of the flexible circuit board 2 along the horizontal direction X is not small, which will occupy a large space on the back side of the panel body 1, greatly reducing the usable space for other devices or structures. In particular, in some embodiments, the panel body 1 is often bent along the simulated bending line 5 to obtain a foldable display panel, while other devices or structures on the back side of the panel body 1 cannot be bent, which will cause the available space on the back side of the panel body 1 to be further reduced. Therefore, the problem of the flexible circuit board 2 occupying a large space is particularly serious in the foldable display panel.

[0030] As described above, an embodiment of the present application provides a display panel. Referring to FIG. 3 , the display panel includes a panel body 10 and a flexible circuit board 20 .

[0031] Among them, the panel body 10 includes a display part 11, a bending part 13 and a binding part 12, and the binding part 12 is arranged on one side of the display part 11, one end of the bending part 13 is connected to the display part 11, and the other end is bent toward the side of the display part 11 close to the binding part 12, and is connected to the binding part 12; the flexible circuit board 20 is connected to the binding part 12, and includes a first signal transmission part 21 and a second signal transmission part 22 connected to each other.

[0032] Among them, one end of the first signal transmission part 21 is connected to the binding part 12, and the other end is bent toward the side of the binding part 12 away from the display part 11, and is connected to the second signal transmission part 22. The orthographic projection of the second signal transmission part 22 on the display part 11 at least partially overlaps with the orthographic projection of the binding part 12 on the display part 11. The second signal transmission part 22 includes a connecting surface 220 connected to the first signal transmission part 21, and the first signal transmission part 21 is connected to the side of the connecting surface 220 close to the binding part 12.

[0033] During the implementation and application process, the embodiment of the present application bends a part of the flexible circuit board 20 to the side of the binding part 12 away from the display part 11 after the flexible circuit board 20 is bound and connected and the panel body 10 is bent, so that the second signal transmission part 22 of the flexible circuit board 20 at least partially overlaps with the binding part 12, thereby reducing the space occupied by the flexible circuit board 20 in the direction parallel to the display part 11, saving space for the display panel and improving the space utilization of the display panel; in addition, the embodiment of the present application designs the connection position of the first signal transmission part 21 and the second signal transmission part 22, which can effectively reduce the bending radius of the first signal transmission part 21, avoid the part where the first signal transmission part 21 and the binding part 12 are connected due to the excessive bending radius of the first signal transmission part 21, and avoid the first signal transmission part 21 and the binding part 12 from being detached.

[0034] In one embodiment of the present application, the first signal transmission part includes a first sub-part and a second sub-part, the first sub-part is connected to the binding part, one end of the second sub-part is connected to the first sub-part, and the other end is bent toward the side of the first sub-part away from the binding part and connected to the second signal transmission part, one end of the second signal transmission part is connected to the second sub-part, and the other end extends along the first direction, and the first direction is the direction of the binding part close to the bent part.

[0035] In one embodiment of the present application, the display panel further includes a first glue layer and a second glue layer, the first glue layer is arranged between the second signal transmission portion and the binding portion, and the second glue layer is arranged between the second signal transmission portion and the first sub-portion.

[0036] In one embodiment of the present application, the display panel further includes a driving chip connected to the binding portion, the driving chip being located between the binding portion and the second signal transmission portion, and between the first sub-portion and the first adhesive layer;

[0037] The driving chip is spaced apart from the second signal transmission portion, the driving chip is spaced apart from the first sub-portion, and the driving chip is spaced apart from the first adhesive layer.

[0038] In one embodiment of the present application, the display panel further includes a first composite functional layer, a second composite functional layer, and a third adhesive layer, which are arranged on a side of the display portion close to the binding portion, wherein the first composite functional layer is arranged between the display portion and the second composite functional layer, and the second composite functional layer is arranged between the first composite functional layer and the binding portion.

[0039] The third adhesive layer is arranged between the first sub-part and the first composite functional layer, and is located on a side of the second composite functional layer and the binding part away from the bending part. The third adhesive layer is spaced apart from the side of the binding part away from the bending part.

[0040] In one embodiment of the present application, the first signal transmission portion includes at least one first routing layer, the second signal transmission portion includes a plurality of second routing layers, the first routing layer includes a first routing line connected to the binding portion, and the second routing layer includes a second routing line connected to the first routing line;

[0041] The number of the second routing layers is greater than the number of the first routing layers.

[0042] In one embodiment of the present application, the flexible circuit board further includes electronic components, which are arranged on a side of the second signal transmission portion close to the binding portion and connected to the second trace.

[0043] In one embodiment of the present application, the thickness of the second signal transmission portion along the second direction is greater than the thickness of the first signal transmission portion along the second direction, and the second direction is the direction in which the display portion approaches the binding portion.

[0044] In one embodiment of the present application, the display portion further includes a pseudo-bending line, and the display panel switches between a first state and a second state. In the first state, the display portion is straight, and in the second state, the display portion is bent along the pseudo-bending line.

[0045] Specifically, referring to FIG. 3 , the display panel provided in the embodiment of the present application includes a panel body 10 , a flexible circuit board 20 , a glue layer, a driving chip 40 , and a composite functional layer for supporting the panel body 10 .

[0046] In one embodiment, the panel body 10 may be an organic light emitting diode display panel, which may include a substrate, and a thin film transistor array layer, an organic light emitting functional layer, a touch layer, and an encapsulation layer disposed on the substrate.

[0047] The panel body 10 may include a display portion 11 for displaying an image and a binding portion 12 for binding the flexible circuit board 20 and the driver chip 40. In addition, one end of the panel body 10 provided with the binding portion 12 may be bent toward the back side to reduce the width of the frame of the display panel. The panel body 10 may further include a bending portion 13 connected between the display portion 11 and the binding portion 12. That is, the binding portion 12 is provided on one side of the display portion 11, which may be the back side of the display portion 11 away from the display surface, and one end of the bending portion 13 is connected to the display portion 11, and the other end is bent toward the side of the display portion 11 close to the binding portion 12 and connected to the binding portion 12.

[0048] The composite functional layer may be disposed between the display portion 11 and the binding portion 12 to support the display portion 11 and the binding portion 12 .

[0049] In one embodiment, the composite functional layer includes a first composite functional layer 51 disposed on the side of the display portion 11 close to the binding portion 12, and a second composite functional layer 52 disposed on the side of the binding portion 12 close to the display portion 11. The first composite functional layer 51 may include a first back plate 511, a heat dissipation buffer layer 512, and a support layer 513, which are sequentially disposed on the side of the display portion 11 close to the binding portion 12, and the second composite functional layer 52 may include a second back plate 521 and a support member 522, which are sequentially disposed on the side of the binding portion 12 close to the display portion 11.

[0050] Among them, the material of the first backplane 511 and the second backplane 521 may include an organic resin material, the material of the heat dissipation buffer layer 512 may include a polyimide material, the material of the support layer 513 may include a metal material, and the material of the support member 522 may include a substrate and a glue layer located on the substrate. For example, the substrate may be a metal material, foam, or polyethylene terephthalate (PET).

[0051] In one embodiment, the heat dissipation buffer layer 512 may include a heat dissipation layer, a mechanical reinforcement layer, a buffer layer, a light-shielding layer, etc. For example, the heat dissipation layer may include a graphite layer, the mechanical reinforcement layer may include a polyimide layer, the buffer layer may include a foam layer, and the light-shielding layer may include a light-shielding glue layer.

[0052] In addition, the display panel further includes a protective adhesive layer 60 attached to a side of the bent portion 13 away from the display portion 11 and the binding portion 12 , so as to protect the outer portion of the bent portion 13 .

[0053] In one embodiment, the driver chip 40 is bound and connected to the side of the binding portion 12 away from the display portion 11, and the flexible circuit board 20 is bound and connected to the side of the binding portion 12 away from the display portion 11, and the binding position of the flexible circuit board 20 is located on the side of the driver chip 40 away from the bending portion 13.

[0054] In the embodiment of the present application, the direction in which the display portion 11 is close to the bending portion 13 is set as the first direction N, and the direction in which the display portion 11 is close to the binding portion 12 is set as the second direction M. The flexible circuit board 20 includes a first signal transmission portion 21 and a second signal transmission portion 22. The first signal transmission portion 21 is bound and connected to the binding portion 12, and the second signal transmission portion 22 is connected to the first signal transmission portion 21. Among them, one end of the first signal transmission part 21 is connected to the binding part 12, and the other end is bent toward the side of the binding part 12 away from the display part 11, and is connected to the second signal transmission part 22, and the second signal transmission part 22 and the binding part 12 at least partially overlap along the second direction M, that is, the embodiment of the present application bends the flexible circuit board 20 so that the second signal transmission part 22 is bent to the side of the binding part 12 away from the display part 11, and then relative to the flexible circuit board 2 in Figures 1 and 2 extending along the horizontal direction X, the embodiment of the present application can reduce the space occupied by the flexible circuit board 20 along the first direction N, can effectively save the back space of the panel body 10, and provide more layout space for other devices and structures on the back side of the panel body 10.

[0055] Referring to Figures 3 and 4 , in the embodiment of the present application, the display portion 11 includes a bending region 111 and a pseudo-bending line 112 located within the bending region 111, and the display panel can switch between a first state and a second state. When the display panel is in the first state, the display portion 11 is in a straight state, and when the display panel is in the second state, the display portion 11 is bent along the pseudo-bending line 112. In other words, the binding structure of the flexible circuit board 20 provided in the embodiment of the present application can be applied to a foldable display panel to provide more layout space for the foldable display panel, thereby alleviating the problem of limited layout space in the foldable display panel due to the inability of other devices and structures on the back side of the foldable display panel to bend.

[0056] It is understandable that the pseudo-bending line 112 is not a physical structure existing in the display portion 11 , but a virtual line set for the convenience of description in the implementation of this application.

[0057] It should be noted that the first signal transmission part 21 includes at least one first routing layer, the second signal transmission part 22 includes multiple second routing layers, and the first routing layer includes a first routing, the second routing layer includes a second routing, and the flexible circuit board 20 also includes an electronic component 23 arranged on the second signal transmission part 22; wherein the first routing is connected to the binding part 12, the second routing is connected to the first routing, and the electronic component 23 is connected to the second routing.

[0058] In one embodiment, the electronic component 23 is arranged on the side of the second signal transmission part 22 close to the binding part 12, and is arranged on the side of the driving chip 40 close to the bending part 13 along the first direction N; that is, the electronic component 23 is arranged between the second signal transmission part 22 and the binding part 12, which can reduce the thickness of the display panel along the second direction M, save space on the display panel along the second direction M, and reduce the probability of interference between the display panel and other components in the second direction M.

[0059] The display panel may further include an adhesive layer 73 disposed between the electronic component 23 and the binding portion 12 , that is, the electronic component 23 is connected to the binding portion 12 via the adhesive layer 73 to further fix the electronic component 23 .

[0060] Optionally, the adhesive layer 73 may be a PSA pressure-sensitive adhesive.

[0061] In one embodiment, the flexible circuit board 20 needs to transmit multiple signals, such as display signals, touch signals, fingerprint recognition signals, and other signals. That is, the second traces located in different second trace layers can transmit different signals and transmit them to the electronic components 23 or transmit them from the electronic components 23. At the same time, the multiple signals are collected in the first trace layer and bound and connected to the binding portion 12 via the first signal transmission portion 21 to realize the input and output of multiple signals. The number of second trace layers is greater than the number of first trace layers. For example, the number of second trace layers can be four or six layers, while the number of first trace layers can be one or two layers, etc.

[0062] Optionally, the electronic components 23 may include but are not limited to display driver components and touch driver components.

[0063] Among them, the thickness of the second signal transmission part 22 along the second direction M is greater than the thickness of the first signal transmission part 21 along the second direction M, that is, the thickness of the first signal transmission part 21 is smaller, and thus the bending stress it is subjected to during the bending process is smaller, making it easier to bend, thereby improving the yield and stability of the display panel.

[0064] In one embodiment, the first signal transmission portion 21 includes a first sub-portion 211 and a second sub-portion 212 connected to each other, wherein the first sub-portion 211 is connected to the binding portion 12, one end of the second sub-portion 212 is connected to the first sub-portion 211, and the other end is bent toward the side of the first sub-portion 211 away from the binding portion 12 and connected to the second signal transmission portion 22, one end of the second signal transmission portion 22 is connected to the second sub-portion 212, and the other end extends along the first direction N.

[0065] In one embodiment, the second signal transmission portion 22 includes a connecting surface 220 connected to the first signal transmission portion 21, and the first signal transmission portion 21 is connected to the side of the connecting surface 220 close to the binding portion 12, thereby effectively reducing the bending radius of the second sub-portion 212, avoiding excessive tension in the second direction M on the first sub-portion 211 due to the excessive bending radius of the second sub-portion 212, thereby avoiding separation between the first sub-portion 211 and the binding portion 12.

[0066] Furthermore, the embodiment of the present application fixes the flexible circuit board 20 by setting an adhesive layer. Specifically, the adhesive layer includes a first adhesive layer 31, a second adhesive layer 32 and a third adhesive layer 33, wherein the first adhesive layer 31 is arranged between the second signal transmission part 22 and the binding part 12, the second adhesive layer 32 is arranged between the second signal transmission part 22 and the first sub-part 211, and the third adhesive layer 33 is arranged between the first sub-part 211 and the first composite functional layer 51, thereby effectively fixing the first signal transmission part 21 and the second signal transmission part 22, thereby improving the yield and stability of the display panel.

[0067] Optionally, the first adhesive layer 31 , the second adhesive layer 32 and the third adhesive layer 33 may all include double-sided adhesive tape.

[0068] Further, please continue to refer to Figure 3. The driver chip 40 is located between the second signal transmission part 22 and the binding part 12, and is also located between the first sub-part 211 and the first adhesive layer 31; in the embodiment of the present application, the driver chip 40 is spaced apart from the second signal transmission part 22, the driver chip 40 is spaced apart from the first sub-part 211, and the driver chip 40 is spaced apart from the first adhesive layer 31; that is, in the embodiment of the present application, the driver chip 40 can be covered by the flexible circuit board 20 and the first adhesive layer 31 to protect the driver chip 40. At the same time, the driver chip 40 is spaced apart from the first adhesive layer 31, the second signal transmission part 22 and the first sub-part 211, which can avoid interference between the driver chip 40, the first adhesive layer 31, the second signal transmission part 22 and the first sub-part 211, and can effectively improve the heat dissipation effect of the driver chip 40.

[0069] In one embodiment, in order to avoid extrusion or collision between the driver chip 40 and the first sub-portion 211, which affects the binding accuracy of the first sub-portion 211, and reduce signal interference, the distance L1 between the driver chip 40 and the first sub-portion 211 along the first direction N is greater than or equal to 0.4 mm. At the same time, in order to avoid the distance between the driver chip 40 and the first sub-portion 211 being too large, resulting in an increase in the occupied space of the flexible circuit board 20 along the first direction N, the distance L1 is less than or equal to 2 mm.

[0070] In one embodiment, to prevent the close distance between the driver chip 40 and the first adhesive layer 31 from affecting the coating accuracy of the first adhesive layer 31, the distance L2 between the driver chip 40 and the first adhesive layer 31 along the first direction N is greater than or equal to 0.3 mm. At the same time, to prevent the distance between the driver chip 40 and the first adhesive layer 31 from being too large, which would increase the space occupied by the flexible circuit board 20 along the first direction N, the distance L2 is less than or equal to 10 mm.

[0071] In addition, please refer to Figure 5, which shows the structure of the flexible circuit board 20 before it is bent. During the manufacturing process, the second sub-portion 212 can be bent along the side of the first sub-portion 211 away from the binding portion 12 to obtain the structure shown in Figure 3. In Figure 5, since the minimum bending radius of the first signal transmission portion 21 is 0.2 mm, the length L3 of the second sub-portion 212 along the first direction N in Figure 5 must be greater than or equal to πR, where R is 0.2 mm, that is, the length L3 must be greater than or equal to 0.628 mm. At the same time, to effectively reduce the space occupied by the flexible circuit board 20 along the first direction N, the length L3 must also be less than or equal to 10 mm.

[0072] Furthermore, in the embodiment of the present application, the third adhesive layer 33 is spaced apart from the side of the binding portion 12 away from the bending portion 13 to avoid interference, extrusion and other adverse phenomena between the third adhesive layer 33 and the panel body 10.

[0073] In one embodiment, the display panel further includes a first sealing glue 71 and a second sealing glue 72. The first sealing glue 71 is arranged between the third adhesive layer 33 and the binding portion 12, and covers the side surface of the binding portion 12 away from the bending portion 13, and the connection between the flexible circuit board 20 and the binding portion 12; the second sealing glue 72 is arranged on the side of the flexible circuit board 20 close to the driving chip 40, and covers the side surface of the flexible circuit board 20 close to the driving chip 40, and the connection between the flexible circuit board 20 and the binding portion 12. The first sealing glue 71 and the second sealing glue 72 can encapsulate and protect the binding portion 12, the flexible circuit board 20, and the connection between the binding portion 12 and the flexible circuit board 20 to prevent water vapor from intruding.

[0074] Optionally, the first sealing glue 71 and the second sealing glue 72 may be UV glue.

[0075] To summarize, in the embodiment of the present application, after the flexible circuit board 20 is bound and connected and the panel body 10 is bent, a portion of the flexible circuit board 20 is bent to the side of the binding portion 12 away from the display portion 11, so that the second signal transmission portion 22 of the flexible circuit board 20 at least partially overlaps with the binding portion 12, thereby reducing the space occupied by the flexible circuit board 20 in a direction parallel to the display portion 11, saving space for the display panel and improving the space utilization of the display panel.

[0076] In addition, an embodiment of the present application also provides a display device, referring to Figure 6, the display device includes a display panel and a functional component 80, and the functional component 80 is arranged on a side of the display portion 11 close to the binding portion 12, and is arranged on a side of the flexible circuit board 20 along a direction parallel to the display portion 11, that is, it is arranged on one side of the flexible circuit board 20 along the first direction N.

[0077] In the display device provided in the embodiment of the present application, the display panel is the display panel described in the above embodiment, that is, by bending a portion of the flexible circuit board 20 to a side away from the binding portion 12, so that the second signal transmission portion 22 of the flexible circuit board 20 at least partially overlaps with the binding portion 12, thereby reducing the space occupied by the flexible circuit board 20 in a direction parallel to the display portion 11, thereby saving more space for setting up the functional component 80.

[0078] Optionally, the functional component 80 may include a battery and / or a camera, etc., so that a larger space can be provided for arranging the battery and / or the camera to increase the battery capacity and / or improve the camera pixel.

[0079] In addition, the display device provided in the embodiment of the present application can be a folding display device to improve the phenomenon that the layout space is limited due to the inability to bend the functional component 80 on the back side of the folding display device, and further improve the performance of the functional component 80, such as increasing the battery capacity and the camera's photo and video effects.

[0080] In one embodiment, the display device may include but is not limited to display devices such as mobile phones, computers, televisions, and tablets.

[0081] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0082] The above is a detailed introduction to a display panel and a display device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display panel, comprising: The panel body comprises a display portion, a bending portion and a binding portion, wherein the binding portion is arranged at one side of the display portion, one end of the bending portion is connected to the display portion, and the other end is bent toward a side of the display portion close to the binding portion and connected to the binding portion; A flexible circuit board, connected to the binding portion, and comprising a first signal transmission portion and a second signal transmission portion connected to each other; Among them, one end of the first signal transmission part is connected to the binding part, and the other end is bent toward the side of the binding part away from the display part, and connected to the second signal transmission part, the orthographic projection of the second signal transmission part on the display part and the orthographic projection of the binding part on the display part at least partially overlap, the second signal transmission part includes a connecting surface connected to the first signal transmission part, and the first signal transmission part is connected to the side of the connecting surface close to the binding part.

2. The display panel according to claim 1, wherein: The first signal transmission part includes a first sub-part and a second sub-part, the first sub-part is connected to the binding part, one end of the second sub-part is connected to the first sub-part, and the other end is bent toward the side of the first sub-part away from the binding part and connected to the second signal transmission part, one end of the second signal transmission part is connected to the second sub-part, and the other end extends along a first direction, and the first direction is the direction of the binding part close to the bent part.

3. The display panel according to claim 2, wherein: The display panel further includes a first glue layer and a second glue layer, wherein the first glue layer is disposed between the second signal transmission portion and the binding portion, and the second glue layer is disposed between the second signal transmission portion and the first sub-portion.

4. The display panel according to claim 3, wherein: The display panel further includes a driving chip connected to the binding portion, wherein the driving chip is located between the binding portion and the second signal transmission portion, and between the first sub-portion and the first glue layer; The driving chip is spaced apart from the second signal transmission portion, the driving chip is spaced apart from the first sub-portion, and the driving chip is spaced apart from the first adhesive layer.

5. The display panel according to claim 2, wherein: The display panel further includes a first composite functional layer, a second composite functional layer, and a third adhesive layer, which are arranged on a side of the display portion close to the binding portion, wherein the first composite functional layer is arranged between the display portion and the second composite functional layer, and the second composite functional layer is arranged between the first composite functional layer and the binding portion; The third adhesive layer is arranged between the first sub-portion and the first composite functional layer, and is located on a side where both the second composite functional layer and the binding portion are away from the bending portion, and the third adhesive layer is spaced apart from the side of the binding portion away from the bending portion.

6. The display panel according to claim 1, wherein: The first signal transmission portion includes at least one first routing layer, the second signal transmission portion includes a plurality of second routing layers, the first routing layer includes a first routing connected to the binding portion, and the second routing layer includes a second routing connected to the first routing; The number of the second routing layers is greater than the number of the first routing layers.

7. The display panel according to claim 6, wherein: The flexible circuit board further includes electronic components, which are arranged on a side of the second signal transmission portion close to the binding portion and connected to the second trace.

8. The display panel according to claim 1, wherein: The thickness of the second signal transmission portion along a second direction is greater than the thickness of the first signal transmission portion along the second direction, and the second direction is a direction in which the display portion approaches the binding portion.

9. The display panel according to claim 1, wherein: The display portion further includes a pseudo-bending line, and the display panel switches between a first state and a second state. In the first state, the display portion is straight, and in the second state, the display portion is bent along the pseudo-bending line.

10. A display device, comprising a display panel and a functional component; The display panel comprises: The panel body comprises a display portion, a bending portion and a binding portion, wherein the binding portion is arranged at one side of the display portion, one end of the bending portion is connected to the display portion, and the other end is bent toward a side of the display portion close to the binding portion and connected to the binding portion; A flexible circuit board, connected to the binding portion, and comprising a first signal transmission portion and a second signal transmission portion connected to each other; Wherein, one end of the first signal transmission part is connected to the binding part, and the other end is bent toward a side of the binding part away from the display part and connected to the second signal transmission part, the orthographic projection of the second signal transmission part on the display part at least partially overlaps with the orthographic projection of the binding part on the display part, the second signal transmission part includes a connection surface connected to the first signal transmission part, and the first signal transmission part is connected to a side of the connection surface close to the binding part; The functional component is arranged on a side of the display portion close to the binding portion, and is located on a side of the binding portion away from the bending portion.

11. The display device according to claim 10, wherein: The first signal transmission part includes a first sub-part and a second sub-part, the first sub-part is connected to the binding part, one end of the second sub-part is connected to the first sub-part, and the other end is bent toward the side of the first sub-part away from the binding part and connected to the second signal transmission part, one end of the second signal transmission part is connected to the second sub-part, and the other end extends along a first direction, and the first direction is the direction of the binding part close to the bent part.

12. The display device according to claim 11, wherein: The display panel further includes a first glue layer and a second glue layer, wherein the first glue layer is disposed between the second signal transmission portion and the binding portion, and the second glue layer is disposed between the second signal transmission portion and the first sub-portion.

13. The display device according to claim 12, wherein: The display panel further includes a driving chip connected to the binding portion, wherein the driving chip is located between the binding portion and the second signal transmission portion, and between the first sub-portion and the first glue layer; The driving chip is spaced apart from the second signal transmission portion, the driving chip is spaced apart from the first sub-portion, and the driving chip is spaced apart from the first adhesive layer.

14. The display device according to claim 11, wherein: The display panel further includes a first composite functional layer, a second composite functional layer, and a third adhesive layer, which are arranged on a side of the display portion close to the binding portion, wherein the first composite functional layer is arranged between the display portion and the second composite functional layer, and the second composite functional layer is arranged between the first composite functional layer and the binding portion; The third adhesive layer is arranged between the first sub-portion and the first composite functional layer, and is located on a side where both the second composite functional layer and the binding portion are away from the bending portion, and the third adhesive layer is spaced apart from the side of the binding portion away from the bending portion.

15. The display device according to claim 10, wherein: The first signal transmission portion includes at least one first routing layer, the second signal transmission portion includes a plurality of second routing layers, the first routing layer includes a first routing connected to the binding portion, and the second routing layer includes a second routing connected to the first routing; The number of the second routing layers is greater than the number of the first routing layers.

16. The display device according to claim 15, wherein: The flexible circuit board further includes electronic components, which are arranged on a side of the second signal transmission portion close to the binding portion and connected to the second trace.

17. The display device according to claim 10, wherein: The thickness of the second signal transmission portion along a second direction is greater than the thickness of the first signal transmission portion along the second direction, and the second direction is a direction in which the display portion approaches the binding portion.

18. The display device according to claim 10, wherein: The display portion further includes a pseudo-bending line, and the display panel switches between a first state and a second state. In the first state, the display portion is straight, and in the second state, the display portion is bent along the pseudo-bending line.

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