Display panel and display device

Abstract

The present application relates to a display panel and a display device. The display panel includes a substrate and a circuit board arranged relative to each other. The substrate has a fan-out region on the side facing the circuit board, and multiple first traces are arranged in the fan-out region. The lengths of the multiple first traces gradually increase from the center to the sides of the fan-out region. The circuit board has multiple second traces on the side facing the substrate. A resistance adjustment control is provided between the first traces and the second traces, and the resistance adjustment control is electrically connected to the first traces and the second traces. The contact resistance between the resistance adjustment control and the first traces and the second traces gradually decreases from the center to the sides of the fan-out region. This display panel solves the problem of uneven display caused by differences in the resistance values ​​of multiple fan-shaped traces.

Description

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] In a display panel, to achieve different display images, a source driver chip typically provides data voltages to the data lines for different display screens. When the display panel's resolution is higher, the display area controlled by the same source driver chip increases. This causes the fan-shaped traces within the fan-shaped area connected to the source driver chip (the fan-shaped area is the trace area between the data line and the source driver chip, so-called because the entire trace area is shaped like a fan) to have varying lengths. This means that the resistance values ​​of the multiple fan-shaped traces vary, resulting in different voltage drops in the data signal voltage output from the source driver chip, causing uneven display on the display panel. Summary of the Invention

[0003] The present application provides a display panel and a display device to solve the problem of uneven display on the display panel caused by differences in resistance values ​​of multiple fan-shaped traces.

[0004] In a first aspect, the present application provides a display panel, comprising:

[0005] The substrate and circuit board are arranged opposite to each other.

[0006] The substrate has a fan-out area on one side facing the circuit board, and a plurality of first traces are arranged in the fan-out area; the lengths of the plurality of first traces gradually increase from the middle to both sides of the fan-out area;

[0007] The circuit board has a plurality of second traces on one side facing the substrate.

[0008] The resistance adjustment component is located between the first routing line and the second routing line and is electrically connected to the first routing line and the second routing line. In the direction from the middle to both sides of the fan-out area, the contact resistance between the resistance adjustment component and the first routing line and the second routing line gradually decreases.

[0009] In a possible implementation, the resistance adjustment component has a connection portion in contact with the first trace, and the cross-sectional shapes of the connection portions are different so that the contact resistance between the resistance adjustment component and the first trace gradually decreases from the middle to both sides.

[0010] In one possible implementation, the resistance adjustment controls have different shapes; and / or the first trace located in the central area is provided with a raised portion on a side away from the substrate, and an orthographic projection area of ​​an end portion of the raised portion based on the substrate is smaller than an orthographic projection area of ​​an end portion of the first trace based on the substrate.

[0011] In a possible implementation, the resistance adjustment component includes a binding glue, and the binding glue electrically connects the first trace and the second trace.

[0012] In one possible implementation, the thickness of each first trace gradually increases from the middle to both sides, the binding glue includes conductive particles and an insulating colloid arranged on the outer layer of the conductive particles, and the substrate and the circuit board are pressed together to break the insulating colloid, so that the conductive particles electrically connect the first trace and the second trace.

[0013] In one possible implementation, each of the resistance adjustment controls includes multiple first adjustment controls and multiple second adjustment controls, each of the first traces located in the central area is connected to each of the first adjustment controls, and each of the first traces located in the edge areas on both sides is connected to each of the second adjustment controls, and the conductivity of the first adjustment controls is less than the conductivity of the second adjustment controls.

[0014] In a possible implementation, the facing area between the first routing line and the second routing line gradually increases from the middle to both sides, and the number of the resistance adjustment components between the first routing line and the second routing line gradually increases.

[0015] In a possible implementation, the first routing line is staggered relative to the second routing line; or the second routing line is staggered relative to the first routing line.

[0016] In a possible implementation, the width of each of the first routing lines gradually increases from the middle to both sides; or the width of each of the second routing lines gradually increases from the middle to both sides.

[0017] In a second aspect, the present application provides a display device, comprising: a display panel as described in the first aspect.

[0018] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0019] The display panel provided in this embodiment uses multiple resistance adjustment controls to adjust the resistance of each first trace, ensuring consistent impedance across the first traces, thereby ensuring a consistent display quality after reconnecting the data lines. This application does not modify the first traces, retaining the original state of the first traces as straight lines of varying lengths. Additional resistance adjustment controls are used to increase the resistance of the first traces, providing resistance compensation for shorter first traces. This ensures that the sum of the resistance of each first trace and the resistance of the corresponding resistance adjustment control are equal, thereby preventing varying degrees of signal attenuation in the data signal voltage output from the circuit board, which could ultimately lead to uneven display on the display panel.

[0020] Moreover, since the shape of the first routing line is not changed and remains straight, the problem of the first routing line occupying a large amount of non-display area due to being a curved or serpentine routing line, resulting in the lower frame of the display being too wide, will not occur; nor will the problem of the first routing line being curved or serpentine routing increasing the blocking effect on the signal and reducing the display effect, will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0024] Figure 1 It is a wiring structure of a fan-out area of ​​a display panel in the prior art;

[0025] Figure 2 The improved fan-out area wiring structure of the display panel in the prior art;

[0026] Figure 3 Schematic diagram of the overall structure of a display panel provided in an embodiment of the present application

[0027] Figure 4 A top view of an embodiment of a display panel provided in this application;

[0028] Figure 5 for Figure 4 Side view of

[0029] Figure 6 A side view showing a raised portion;

[0030] Figure 7 A top view of another embodiment of a display panel provided by the present application;

[0031] Figure 8 for Figure 7 Side view of

[0032] Figure 9 A top view of another embodiment of a display panel provided in the present application;

[0033] Figure 10 for Figure 9 Side view of

[0034] Figure 11 A top view of another embodiment of a display panel provided by the present application;

[0035] Figure 12 for Figure 11 side view.

[0036] Description of reference numerals:

[0037] 1. Substrate; 2. Circuit board; 3. Second trace; 4. First trace; 41. Raised portion; 5. Data line; 6. Resistance adjustment control; 61. First adjustment control; 62. Second adjustment control; 7. Binding area; 8. Fan-out area. DETAILED DESCRIPTION

[0038] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0039] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, these are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0040] For ease of description, spatially relative terms may be used herein to describe the relative position or movement of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," "above," "front," "back," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figures undergoes a positional flip or a change in posture or a change in motion, then these directional indications will also change accordingly. For example, an element described as "below" or "below" another element or feature will subsequently be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein will be interpreted accordingly.

[0041] In order to solve the problem in the prior art that the area of ​​the display area controlled by the same source driver chip increases, resulting in the fan-shaped lines in the fan-shaped area connected to the source driver chip presenting a structure of different lengths, the different lengths of multiple fan-shaped lines lead to different impedances of each fan-shaped line, and the data signal voltage output from the source driver chip produces different voltage drops, resulting in uneven display of the display panel; the present application provides a display panel, which adjusts the resistance of the fan-shaped line through a resistance adjustment control, so that the resistance of multiple fan-shaped lines is the same and the impedance is consistent, thereby ensuring uniform display of the display panel.

[0042] Example 1

[0043] Reference Figure 3-Figure 5 , an embodiment of the present application provides a display panel, comprising:

[0044] A substrate 1 and a circuit board 2 are arranged opposite to each other;

[0045] The substrate 1 has a fan-out area 8 on one side facing the circuit board 2, and a plurality of first traces 3 are arranged in the fan-out area 8; the lengths of the plurality of first traces 3 gradually increase from the middle to both sides of the fan-out area 8;

[0046] The circuit board 2 has a plurality of first traces 4 on a side facing the substrate 1;

[0047] The resistance adjustment component 6 is located between the first routing line 3 and the first routing line 4 and is electrically connected to the two. In the direction from the middle to the two sides of the fan-out area 8, the contact resistance between the resistance adjustment component 6 and the first routing line 3 and the second routing line 4 gradually decreases.

[0048] The resistance of each first trace 4 is adjusted by a plurality of resistance adjustment controls 6, so that the impedance of the first trace 4 is consistent, thereby ensuring the display effect after reconnecting the data line 5. The present application does not modify the first trace 4, retaining the original state of the first trace 4 as straight lines with different lengths. The resistance of the first trace 4 is increased by the additional resistance adjustment controls 6, and the resistance of the shorter first trace 4 is compensated. This ensures that the sum of the resistance of each first trace 4 and the resistance of the corresponding resistance adjustment control 6 is equal, thereby avoiding the problem of different degrees of signal attenuation of the data signal voltage output from the circuit board 2, which ultimately causes uneven display on the display panel.

[0049] Moreover, since the shape of the first routing line 4 is not changed and remains straight, the problem of the first routing line 4 occupying a large amount of non-display area due to being a curved or serpentine routing line, resulting in the lower frame of the display being too wide, will not occur; nor will the problem of the first routing line 4 being curved or serpentine routing increasing the blocking effect on the signal and reducing the display effect, will not occur.

[0050] The substrate 1 includes a glass substrate, the circuit board 2 includes a rigid circuit board or a flexible circuit board. In this application, the circuit board 2 is described as a flexible circuit board, and the second trace 3 is printed on the flexible circuit board.

[0051] One end of the first trace 4 is connected to the second trace 3, and the other end of the first trace 4 is connected to the data line 5; a driver chip is provided on the circuit board 2, and the driver chip is connected to the data line 5 through the first trace 4. In this case, the first trace 4 is a fan-out trace. Of course, the first trace 4 also includes a first connecting line and a second connecting line. The circuit board 2 is electrically connected to the driver chip through the first connecting line, and the driver chip is electrically connected to the data line 5 through the second connecting line. In this case, the resistance adjustment control 6 can be provided on the second connecting line to adjust the resistance value corresponding to the first trace 4, or the resistance adjustment control 6 is provided on the first connecting line to adjust the resistance value corresponding to the first trace 4. In this embodiment, a detailed description is given by taking the example that the driver chip is provided on the circuit board 2, the first trace 4 connects the driver chip and the data line 5, and the first trace 4 is a fan-out trace.

[0052] Since the present application solves the problem of inconsistent impedance of each first trace 4 from the perspective of changing the contact resistance of the first trace 4, it can also consume excess current in the circuit, thereby greatly reducing the current carried by the driver chip and improving the problem of the driver chip being prone to heat.

[0053] Reference Figure 1In the field of display panel design, since the width of the driver chip is smaller than the width of all the data lines 5 in the corresponding area on the display panel, the wiring connecting the data lines 5 and the driver chip will form a fan-out area 8. The inconsistent wiring length in the fan-out area 8 will lead to inconsistent wiring impedance, thus affecting display uniformity. Figure 2 Currently, to address the issue of poor display consistency, wiring methods such as wire wrapping are used to ensure consistent wire lengths at different locations. However, due to the trend toward narrower bezels and chins, wire wrapping occupies a significant area, making it difficult to apply to existing displays. This application achieves consistent impedance across all wires without increasing the layout area of ​​the fan-out area.

[0054] Reference Figure 3-Figure 6 The resistance adjustment component 6 connects the first trace 4 and the second trace 3, and the contact area between the resistance adjustment component 6 and the connected first trace 4 gradually increases from the middle to the sides; by adjusting the contact resistance between the input end of the first trace 4 and the electrical connection component, the impedance of the output end of the first trace 4 is adjusted, and the impedance difference between the multiple first traces 4 is compensated to achieve complementarity, thereby ensuring the consistency of the trace impedance of the fan-out area 8. It is worth noting that Figure 3-Figure 6 The second trace 3 on the circuit board 2 is not shown.

[0055] The resistance adjustment control 6 has a connection portion that contacts the first trace 4. Specifically, the portion of the resistance adjustment control 6 that contacts the first trace 4 is defined as the connection portion. The cross-sectional shapes of the connection portions are different, so that the contact resistance between the resistance adjustment control 6 and the first trace 4 gradually decreases from the center toward the sides. By varying the cross-sectional shapes of the connection portions of the resistance adjustment control 6, the contact resistance between the resistance adjustment control 6 and the first trace 4 is varied, thereby compensating for impedance differences between the first traces 4 and ensuring a good display quality. The initial shapes of the resistance adjustment controls 6 can be the same, and the shapes of the resistance adjustment controls 6 can be varied during the display panel manufacturing process to compensate for the impedance of the first trace 4. Alternatively, the resistance adjustment controls 6 can have different initial shapes. By varying the shapes of the resistance adjustment controls 6, the area of ​​contact between the resistance adjustment control 6 and the first trace 4 can be adjusted. In other words, by varying the manufacturing process for the resistance adjustment controls 6, resistance adjustment controls 6 with different shapes can be obtained.

[0056] Of course, the area of ​​contact between the resistance adjustment member 6 and the first traces 4 can be adjusted by changing the shape of each first trace 4. Alternatively, the shapes of the resistance adjustment member 6 and the first traces 4 can be changed simultaneously.

[0057] For example, to simplify the manufacturing process, multiple resistance-adjusting components 6 of the same shape and size can be prepared. The resistance-adjusting components 6 can be made of a material with a certain degree of elasticity. By varying the shape of each first trace 4, the pressure exerted on the resistance-adjusting component 6 by each first trace 4 varies, causing the resistance-adjusting component 6 to deform differently. This results in different contact areas between the first trace 4 and the resistance-adjusting component 6, thereby generating different contact resistances.

[0058] Reference Figure 6 The first trace 4 located in the central region is provided with a raised portion 41 on a side away from the substrate 1. The orthographic projection area of ​​the end of the raised portion 41 based on the substrate 1 is smaller than the orthographic projection area of ​​the end of the first trace 4 based on the substrate 1. By providing the raised portion 41 on the first trace 4, the end of the raised portion 41 of the first trace 4 is used to connect to the resistance adjuster 6. Because the end area of ​​the raised portion 41 is smaller than the end area of ​​the first trace 4 used for connection to the resistance adjuster 6, the contact area between the first trace 4 located in the central region and the resistance adjuster 6 is smaller than the contact area between the first trace 4 located at the two side edges and the resistance adjuster 6, thereby achieving consistent impedance among the first traces 4.

[0059] For example, the protrusion 41 may be in the shape of a pyramid, a prism, a cuboid, a cube, a cylinder or a hemisphere. Figure 6 In this application, the hemispherical shape of the raised portion 41 is used as an example. The first trace 4 is formed on the glass substrate 1. The raised portion 41 on the first trace 4 can be formed into a thick middle and ultra-thin edge shape using photoresist. When etching, a portion of the first trace 4 can be etched to the edge, thereby forming the raised portion 41.

[0060] Each resistance adjustment member 6 can be made of different materials and connected to the first trace 4. Of course, each resistance adjustment member 6 can also be made of the same material, and the shape of each resistance adjustment member 6 can be adjusted during the manufacturing process to achieve different contact areas between each resistance adjustment member 6 and each first trace 4.

[0061] Reference Figure 4 and Figure 5 It is worth noting that Figure 4 and Figure 5 The second trace 3 on the circuit board 2 is not shown. The resistance adjustment component 6 includes a bonding adhesive that electrically connects the first trace 4 and the second trace 3. The bonding adhesive achieves an electrical connection between the first trace 4 and the second trace 3, while also ensuring stability and reliability of the connection.

[0062] The thickness of each first trace 4 gradually increases from the middle to both sides. The binding glue includes conductive particles and an insulating colloid arranged on the outer layer of the conductive particles. The substrate 1 and the circuit board 2 are pressed together to crush the insulating colloid, so that the conductive particles electrically connect the first trace 4 and the second trace 3. Since the thickness of each first trace 4 is variable, the distance between the first trace 4 and the circuit board 2 is also variable. The resistance adjustment control 6 is arranged between the first trace 4 and the circuit board 2 and is used to connect the first trace 4 and the second trace 3 on the circuit board 2. Therefore, during the pressing process of the substrate 1 and the circuit board 2, due to the different distances between the first trace 4 and the circuit board 2, the forces acting on each resistance adjustment control 6 are different. When the pressing force is constant, the smaller the distance between the first trace 4 and the circuit board 2, the greater the pressure on the resistance adjustment component 6 thereon, and the greater its deformation, which makes the contact area between it and the first trace 4 larger; conversely, the greater the distance between the first trace 4 and the circuit board 2, the smaller the pressure on the resistance adjustment component 6 thereon, and the smaller its deformation, which makes the contact area between it and the first trace 4 smaller.

[0063] Combine Figure 3 The binding glue includes conductive particles and an insulating colloid disposed on the outer layer of the conductive particles. The substrate 1 and the circuit board 2 are pressed together to break the insulating colloid, so that the conductive particles are electrically connected to the first trace 4 and the second trace 3. The display panel fan-out trace is bound to the circuit board 2 in the binding area 7. Through the setting of the binding glue, during the pressing process of the substrate 1 and the circuit board 2, the upper and lower sides of the insulating colloid are pressed, exposing the conductive particles inside. The first trace 4 on the substrate 1 and the second trace 3 on the circuit board 2 are electrically connected through the conductive particles. The compressed insulating colloid also acts as an adhesive, thereby bonding the substrate 1 and the circuit board 2 together. In addition, since the heights of the first traces 4 are different, the same binding glue is used to connect each first trace 4 separately. During the pressing process of the substrate 1 and the circuit board 2, the conductive particles are squeezed to different degrees, and ultimately undergo different deformations, thereby achieving different contact areas between each first trace 4 and the connected conductive particles. The contact area between the first routing line 4 located in the middle and the corresponding conductive particles is smaller than the contact area between the first routing lines 4 located at the edges on both sides and the corresponding conductive particles. The contact impedance of the first routing line 4 located in the middle is larger, and the contact impedance of the first routing lines 4 located at the edges on both sides is smaller, thereby compensating for the impedance of the first routing line 4 itself, achieving consistency in the impedance of each fan-out routing line, and ensuring the display effect.

[0064] Reference Figure 7 and Figure 8 It is worth noting that Figure 7 and Figure 8The second traces 3 are not shown. Each resistance adjustment element 6 may further include multiple first adjustment elements 61 and multiple second adjustment elements 62. Each first trace 4 located in the central region is connected to each first adjustment element 61, and each first trace 4 located in the side edge regions is connected to each second adjustment element 62. The conductivity of the first adjustment element 61 is lower than that of the second adjustment element 62. In this case, each first trace 4 is located at the same height on the substrate 1. The first trace 4 and the second trace 3 are connected via the resistance adjustment element 6. By adjusting the resistance of the resistance adjustment element 6, the resistance difference of the first trace 4 can be compensated, thereby achieving consistent fan-out trace impedance.

[0065] When the resistance adjustment element 6 is a bonding adhesive, the resistance of the conductive particles affects the bonding impedance. By adjusting the resistance of the conductive particles and the impedance difference of the first trace 4, compensation is achieved, and the difference between the two is used to complement each other to ensure consistent fan-out trace impedance. Each resistance adjustment element 6 may further include multiple first adjustment elements 61 and multiple second adjustment elements 62. Each first trace 4 located in the central region is connected to a first adjustment element 61, and each first trace 4 located in the side edge regions is connected to a second adjustment element 62. The conductivity of the first adjustment element 61 is lower than that of the second adjustment element 62. The first trace 4 located in the central region is coated with the first adjustment element 61, and the first trace 4 located in the side edge regions is coated with the second adjustment element 62. The first adjustment element 61 and the second adjustment element 62 are formed of two bonding adhesives with different conductivities, and the conductivity of the first adjustment element 61 is lower than that of the second adjustment element 62. This compensates for the impedance difference of the first trace 4.

[0066] Reference Figures 9-12 , Figures 9-12 The resistance adjuster 6 between the first and second traces 4 and 3 is not shown. The area of ​​the first and second traces 4 and 3 facing each other gradually increases from the center toward the sides, and the number of resistance adjusters 6 between the first and second traces 4 and 3 increases. In other words, the areas facing each other from the center toward the sides can accommodate more resistance adjusters 6, thereby changing the contact resistance between the resistance adjusters 6 and the two traces, thereby ensuring consistent impedance across the fan-out traces.

[0067] Reference Figure 9 and Figure 10, wherein the first trace 4 is staggered relative to the second trace 3; or, the second trace 3 is staggered relative to the first trace 4. When the first trace 4 is staggered relative to the second trace 3, the structure of the second trace 3 on the circuit board 2 remains unchanged, and the structure of the first trace 4 is adjusted according to the structure of the second trace 3 on the circuit board 2, that is, the first trace 4 located at the edges of both sides has the largest facing area with the corresponding second trace 3, and the first trace 4 located in the middle has the smallest facing area with the corresponding second trace 3. On the orthographic projection surface of the first trace 4 based on the circuit board 2, the first trace 4 located at the edges of both sides can completely overlap with the corresponding second trace 3, and the remaining first traces 4 can all be offset in the same direction relative to the second trace 3, and the remaining first traces 4 can all be offset to the right or to the left relative to the circuit direction. Of course, the remaining first traces 4 can also be offset in two different directions relative to the second trace 3; that is, the first trace 4 on the left side can be offset to the left relative to the second trace 3, and the first trace 4 on the right side can be offset to the right relative to the second trace 3. However, the first trace 4 on the left side can also be offset to the right relative to the second trace 3, and the first trace 4 on the right side can be offset to the left relative to the second trace 3. Similarly, when the second trace 3 is offset relative to the first trace 4, the structure of the first trace 4 on the substrate 1 remains unchanged, and the structure of the second trace 3 on the circuit board 2 is adjusted based on the structure of the first trace 4 on the substrate 1. The specific adjustment method is as described in the above example and is not further described.

[0068] It should be noted that Figure 9 and Figure 11 The second routing line 3 and the first routing line 4 are misaligned in the upper and lower directions for easier understanding of the solution provided in this embodiment. In actual applications, the second routing line 3 and the first routing line 4 are overlapped in the upper and lower directions in the figure.

[0069] Reference Figure 11 and Figure 12 The above solution adjusts the contact area between the first and second traces 4 and 3 by shifting their relative positions in the width direction, without changing the widths of the first and second traces 3. Of course, without changing the relative positions of the first and second traces 4 and 3, the contact area between them can also be adjusted to further adjust the bonding impedance by adjusting the widths of the first and second traces 4 and / or 3. Specifically, the width of each first trace 4 gradually increases from the center toward the sides, or the width of each second trace 3 gradually increases from the center toward the sides.

[0070] Combine Figure 3Of course, since the first trace 4 and the second trace 3 are connected by binding glue, after the width of the contact between the first trace 4 and the second trace 3 is reduced, the number of conductive particles connecting the corresponding first trace 4 and the second trace 3 is also reduced, affecting the binding impedance.

[0071] It should be noted that the various solutions provided in this application can also be combined. For example, each first trace 4 located in the central area is connected to each first adjustment control 6, and each first trace 4 located in the edge areas on both sides is connected to each second adjustment control 6. The conductivity of the first adjustment control 61 is less than the conductivity of the second adjustment control 62. At the same time, the first trace 4 in the central area is provided with a protrusion 41 on the side away from the substrate 1, and the orthographic projection area of ​​the end of the protrusion 41 based on the substrate 1 is smaller than the orthographic projection area of ​​the end of the first trace 4 based on the substrate 1. The above combination scheme is only an example, and this application is not limited thereto. It is sufficient to ensure that the contact resistance between the resistance adjustment control 6 and the first trace 4 and the second trace 3 gradually decreases in the direction from the middle to the two sides of the fan-out area 8.

[0072] In summary, the display panel provided in this application can ensure consistent routing impedance without increasing the layout area of ​​the fan-out area 8, and can meet the development trend of narrow chin and narrow frame of the display.

[0073] Example 2

[0074] Reference Figures 1-12 The present application also provides a display device, which includes the display panel described in the aforementioned embodiment. The technical features of the display panel can be found in the previous description and will not be elaborated on here. Since the display device disclosed in the present application includes the display panel provided in the aforementioned embodiment, the display device including the display panel also has all the aforementioned technical effects, which will not be elaborated on here.

[0075] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0076] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0077] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A display panel, characterized in that: include: The substrate and circuit board are arranged opposite to each other. The substrate has a fan-out area on one side facing the circuit board, and a plurality of first traces are arranged in the fan-out area; the lengths of the plurality of first traces gradually increase from the middle to both sides of the fan-out area; The circuit board has a plurality of second traces on a side facing the substrate; a resistance adjustment component located between the first routing line and the second routing line and electrically connected to the first routing line and the second routing line, wherein the contact resistance between the resistance adjustment component and the first routing line and the second routing line gradually decreases in a direction from the middle to both sides of the fan-out area; The resistance adjustment component includes a binding glue, and the binding glue electrically connects the first trace and the second trace; The thickness of each first trace gradually increases from the middle to both sides, the binding glue includes conductive particles and an insulating colloid arranged on the outer layer of the conductive particles, the substrate and the circuit board are pressed together to crush the insulating colloid, so that the conductive particles electrically connect the first trace and the second trace, and the pressing makes the cross-sectional shape of the conductive particles different so that the contact resistance between the resistance adjustment control and the first trace gradually decreases from the middle to both sides.

2. The display panel according to claim 1, wherein: The first trace located in the middle area is provided with a protrusion on a side away from the substrate, and an orthographic projection area of ​​an end of the protrusion based on the substrate is smaller than an orthographic projection area of ​​the first trace based on the substrate.

3. The display panel according to claim 1, wherein: Each of the resistance adjustment controls includes multiple first adjustment controls and multiple second adjustment controls. Each of the first routing lines located in the central area is connected to each of the first adjustment controls, and each of the first routing lines located in the edge areas on both sides is connected to each of the second adjustment controls. The conductivity of the first adjustment control is less than that of the second adjustment control.

4. The display panel according to claim 1, wherein: The facing area between the first routing line and the second routing line gradually increases from the middle to both sides, and the number of the conductive particles between the first routing line and the second routing line gradually increases.

5. The display panel according to claim 4, wherein: The first routing line is staggered relative to the second routing line; or the second routing line is staggered relative to the first routing line.

6. The display panel according to claim 4, wherein: The width of each of the first routing lines gradually increases from the middle to both sides; or the width of each of the second routing lines gradually increases from the middle to both sides.

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

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