A display panel and display device

Abstract

This application provides a display panel and a display device. The display panel includes: a target wiring area, a set of wiring inflection points, and multiple signal lines. The set of wiring inflection points includes at least: a first set of wiring inflection points and a second set of wiring inflection points. The first set of wiring inflection points is used to divide the target wiring area into a first wiring area and a second wiring area, the horizontal width of the first wiring area being greater than the horizontal width of the second wiring area. Multiple signal lines respectively pass through the first wiring area and the second wiring area. The interval between two adjacent signal lines in the first wiring area is greater than the interval between two adjacent signal lines in the second wiring area. The second set of wiring inflection points is distributed on the multiple signal lines in the second wiring area. Thus, this application reduces the horizontal width required for wiring arrangement by utilizing inflection points for signal line routing, thereby meeting the horizontal wiring requirements of the display panel.

Description

Technical Field

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

[0002] Traditional display panels have relatively wide bending areas, and the distance from the touchscreen terminals to Chemical Vapor Deposition (CVD) is not a limiting factor. Therefore, current display panels use straight-line wiring for their cabling.

[0003] Currently, the wiring space in the X-axis direction of the bending area of ​​display panels is being gradually compressed. Therefore, there is an urgent need for a wiring method for display panels. Summary of the Invention

[0004] In view of this, this application provides a display panel and a display device to improve the efficiency of parameter usage.

[0005] To solve the above problems, the technical solution provided in this application is as follows: In a first aspect, this application provides a display panel, the display panel comprising: a target wiring area, a set of wiring inflection points, and multiple signal lines; The set of cabling inflection points includes at least: a first set of cabling inflection points and a second set of cabling inflection points; The first set of wiring inflection points is used to divide the target wiring area into a first wiring area and a second wiring area, wherein the horizontal width of the first wiring area is greater than the horizontal width of the second wiring area; the multiple signal lines respectively pass through the first wiring area and the second wiring area; The spacing between two adjacent signal lines in the first wiring area is greater than the spacing between two adjacent signal lines in the second wiring area. The second set of routing inflection points is distributed across multiple signal lines in the second routing region. In one possible implementation, the multiple signal lines in the second routing region are arranged within the PVEE electrode region of the second routing region. or, Multiple signal lines in the second wiring area are arranged in the PVDD electrode area of ​​the second wiring area.

[0006] In one possible implementation, each of the plurality of signal lines is connected to a terminal corresponding to each signal line. In one possible implementation, the first set of wiring inflection points includes: a first subset of inflection points. Multiple first inflection points in the first inflection point subset are on the same horizontal straight line.

[0007] In one possible implementation, the first wiring area includes: the encapsulation area of ​​the display panel, wherein the distance between the boundary line of the encapsulation area and the straight line where the plurality of first inflection points are located, perpendicular to the display panel, is not less than a preset first distance threshold.

[0008] In one possible implementation, the second wiring area includes: a terminal boundary line; The distance between the boundary line of the encapsulation area and the boundary line of the terminal in the direction perpendicular to the display panel is not less than a preset second distance threshold, and the preset first distance threshold is less than the preset second distance threshold.

[0009] In one possible implementation, the second wiring region further includes a third set of wiring inflection points; the third set of wiring inflection points is located between the second set of wiring inflection points and the terminal boundary line; the signal line spacing of the plurality of signal lines on the third set of wiring inflection points is smaller than the signal line spacing of the plurality of signal lines on the second set of wiring inflection points. In one possible implementation, the second set of routing inflection points includes: a second subset of inflection points and a third subset of inflection points. The angle between the straight lines containing multiple second inflection points in the second inflection point subset and the straight lines containing multiple third inflection points in the third inflection point subset is greater than 90 degrees.

[0010] In one possible implementation, the number of second inflection points in the second inflection point subset is greater than the number of third inflection points in the third inflection point subset.

[0011] In one possible implementation, a display device includes the display panel described in the first aspect.

[0012] Therefore, this application has the following beneficial effects: This application provides a display panel, comprising: a target wiring area, a set of wiring inflection points, and multiple signal lines; the set of wiring inflection points includes at least: a first set of wiring inflection points and a second set of wiring inflection points; the first set of wiring inflection points is used to divide the target wiring area into a first wiring area and a second wiring area, the horizontal width of the first wiring area being greater than the horizontal width of the second wiring area; the multiple signal lines respectively penetrate the first wiring area and the second wiring area; the interval between two adjacent signal lines in the first wiring area is greater than the interval between two adjacent signal lines in the second wiring area; the second set of wiring inflection points is distributed on the multiple signal lines in the second wiring area. Thus, this application reduces the horizontal width required for wiring by utilizing inflection points for wiring arrangement, thereby meeting the horizontal wiring requirements of the display panel. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application; Figure 2 This is a schematic diagram of another display panel structure provided in an embodiment of this application; Figure 3 This is a schematic diagram of another display panel structure provided in an embodiment of this application; Figure 4 This is a schematic diagram of another display panel structure provided in an embodiment of this application; Figure 5 This is a schematic diagram of another display panel structure provided in an embodiment of this application; Figure 6 This is a schematic diagram of another display panel structure provided in an embodiment of this application; Figure 7 This is a schematic diagram of another display panel structure provided in an embodiment of this application; Figure 8 This is a schematic diagram of another display panel structure provided in an embodiment of this application; Figure 9 This is a schematic diagram of the structure of a display device provided in an embodiment of this application. Detailed Implementation

[0015] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0016] Secondly, this application provides a detailed description in conjunction with schematic diagrams. When detailing the embodiments of this application, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this application. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0017] To facilitate understanding of the technical solutions provided in this application, the background technology involved in this application will be explained below.

[0018] Traditional display panels have relatively wide bending areas, and the distance from the touchscreen terminals to Chemical Vapor Deposition (CVD) is not a limiting factor. Therefore, current display panels use straight-line wiring for their cabling.

[0019] Currently, the wiring space in the X-axis direction of the bending area of ​​display panels in wearable devices and other projects is being gradually compressed. Therefore, there is an urgent need for a wiring method for display panels.

[0020] To meet current customer needs, the X-direction width of the bending area is being gradually reduced. This means customers currently require a reduction in the X-direction width of the bending area traces. This is especially true for the perimeter of circular products, where the X-direction width of the bending area needs further compression. Therefore, the pitch of the bending area traces is also being gradually reduced. However, at the cross-bank (first barrier of the flexible package) location, metal residue and broken wires are placed, resulting in a larger TP trace pitch (cycle time) than the bending area trace pitch. In other words, with current technology, due to the limited space in the X-direction of the bending area, the trace pitch at the bending point is smaller than the cross-bank pitch. This will lead to a mismatch between the bending and bank trace pitches.

[0021] Therefore, to address the aforementioned problems, this application provides a display panel and a display device. The display panel includes: a target wiring area, a set of wiring inflection points, and multiple signal lines. The set of wiring inflection points includes at least: a first set of wiring inflection points and a second set of wiring inflection points. The first set of wiring inflection points is used to divide the target wiring area into a first wiring area and a second wiring area, wherein the horizontal width of the first wiring area is greater than the horizontal width of the second wiring area. The multiple signal lines respectively penetrate the first wiring area and the second wiring area. The interval between two adjacent signal lines in the first wiring area is greater than the interval between two adjacent signal lines in the second wiring area. The second set of wiring inflection points is distributed on the multiple signal lines in the second wiring area. Thus, this application reduces the horizontal width required for signal line routing by utilizing inflection points, thereby meeting the horizontal wiring requirements of the display panel.

[0022] To better understand the technical solution and effects of this application, the specific embodiments will be described in detail below with reference to the accompanying drawings.

[0023] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application.

[0024] This application provides a display panel, which includes: a target wiring area, a set of wiring inflection points, and multiple signal lines.

[0025] The set of wiring inflection points includes at least: a first set of wiring inflection points and a second set of wiring inflection points, such as... Figure 1 As shown, the set of wiring inflection points includes Figure 1 The first wiring inflection point set 101 and the second wiring inflection point set 102 are shown in the figure.

[0026] A first set of cabling inflection points 101 is used to divide the target cabling area into a first cabling area 103 and a second cabling area 104. The horizontal width of the first cabling area is greater than the horizontal width of the second cabling area. Multiple signal lines pass through the first cabling area 103 and the second cabling area 104 respectively. It is understood that each of the multiple signal lines has a corresponding inflection point in the first set of inflection points, and each signal line bends after passing through its corresponding inflection point.

[0027] In the first wiring area, the spacing between two adjacent signal lines is greater than the spacing between two adjacent signal lines in the second wiring area. For example: Figure 1As shown, the interval A between any two signal lines in the first wiring area is greater than the interval B between any two signal lines in the second wiring area.

[0028] The second wiring inflection point set 102 is distributed across multiple signal lines in the second wiring area. It is understood that each signal line in the second inflection point set has a corresponding inflection point, and each signal line bends after passing its corresponding inflection point.

[0029] Therefore, this application addresses situations where there is insufficient space in the X-direction, i.e., insufficient space for horizontal wiring. When X-direction space is insufficient, the wiring cycle is limited by the limited X-direction space, resulting in a shorter wiring cycle. The technical solution in this application addresses this by setting wiring inflection points and segmenting the wiring in the vertical (Y-direction) direction based on these inflection points. This reduces the wiring cycle of signal lines passing through the inflection points, thereby compressing the X-direction space and gradually achieving the reduced horizontal space. In other words, when X-direction space is insufficient, signal line arrangement based on wiring inflection points enables personalized wiring of the display panel, improving customer satisfaction. For one possible implementation, please refer to [link to relevant documentation]. Figure 2 , Figure 2 This is a schematic diagram of another display panel structure provided in an embodiment of this application.

[0030] Multiple signal lines in the second wiring area are arranged in the PVEE electrode area of ​​the second wiring area, for example, in Figure 2 In the PVEE-a part, the PVEE fanout is relatively small (specifically as follows). Figure 2 As shown in PVEE-a), in Figure 2 In the PVEE-b part, PVEE fanout is relatively large (specifically as follows). Figure 2 As shown in PVEE-b), it should be noted that the amount of PVEE fanout can be adjusted according to the boundary of the signal line.

[0031] Alternatively, in another possible implementation, multiple signal lines of the second wiring area can be arranged in the PVDD electrode area of ​​the second wiring area. It should be noted that the PVDD electrode area will have a relative position to the PVEE in the X direction (horizontal direction).

[0032] It should be noted that when display and TP are performed simultaneously, i.e., when real-time interaction is achieved between the touchscreen (TP) and the displayed content, crosstalk can occur between the TP and TFT signals. In this case, a fixed-point signal is needed to isolate the two and prevent mutual interference. If the signal line is not arranged on the PVDD or PVEE electrode area, crosstalk will occur between the display panel signal and the TFT signal, affecting display and touch control. Therefore, in this embodiment, the signal line is arranged on the PVDD or PVEE electrode area, using the PVEE or PVDD electrode area for interference shielding, avoiding crosstalk between the TP signal and the TFT side signal, and reducing the impact of signal crosstalk on display and touch control.

[0033] In one possible implementation, please see Figure 3 , Figure 3 This is a schematic diagram of another display panel structure provided in an embodiment of this application. For example... Figure 3 Each of the multiple signal lines shown is connected to its corresponding terminal 301. It should be noted that the terminal is a via connecting the touchscreen signal line in the bend area to the TFT trace. The terminal ensures that the spacing, curvature, direction, and shape of the touchscreen signal line in the bend area are consistent, thus ensuring uniform stress. In other words, in the display screen, the terminal is a via connecting the touchscreen signal line and the TFT trace, used for signal transmission and connection. When the touchscreen signal line transitions from the bend area to the TFT trace via, a terminal is needed for transition. By using terminals, the stress on the touchscreen signal line and the TFT trace is made consistent at the connection point, avoiding problems such as poor signal transmission or connector damage due to uneven stress, ensuring the stability and reliability of signal transmission. Furthermore, the terminal also provides a certain degree of buffering, reducing the impact of external stress and vibration on signal transmission, improving the stability and durability of the display screen.

[0034] In one possible implementation, please see Figure 4 , Figure 4 This is a schematic diagram of another display panel structure provided in an embodiment of this application.

[0035] like Figure 4 As shown, the first set of wiring inflection points 401 may include a first subset of inflection points 402, where multiple inflection points in the first subset of inflection points 402 lie on the same horizontal straight line. That is, the first set of inflection points 402 includes multiple inflection points, and these inflection points are all on the same horizontal straight line. Thus, because the inflection points are all on the same horizontal straight line, the spacing between signal lines is ensured to be the same as the spacing between inflection points. It should be noted that the multiple inflection points included in the first set of inflection points 402 may not lie on the same horizontal straight line. Figure 4 It is only one of the possible arrangements of the multiple inflection points included in the first inflection point set 402.

[0036] In one possible implementation, please see Figure 5 , Figure 5 This is a schematic diagram of another display panel structure provided in an embodiment of this application.

[0037] like Figure 5 The first wiring area shown includes the encapsulation area of ​​the display panel. The distance between the boundary line 501 of the encapsulation area and the straight line 502 containing multiple first inflection points in the first inflection point subset, perpendicular to the display panel, is not less than a preset first distance threshold 503. It should be noted that the preset first distance threshold 503 is mainly related to the process. If the preset first distance threshold 503 is 0, a short circuit problem may occur in the signal line due to residual upper metal. Therefore, the preset first distance threshold 503 needs to satisfy the value after the overlay and loss of the process.

[0038] It should be noted that each of the multiple signal lines corresponds to a first inflection point, and each signal line bends after passing its corresponding first inflection point. If the multiple first inflection points are set too close to the boundary line 501 of the package area, then after each signal line bends at its corresponding inflection point, the protrusion around the boundary line of the package area will cause a short circuit or open circuit in the signal line. Based on this, by setting a preset first distance threshold 503, multiple first inflection points in the set first inflection point subset can be prevented from being too close to the boundary line of the package area, and the occurrence of open circuits or short circuits in the signal lines caused by excessive protrusion of the package area can be minimized.

[0039] In one possible implementation, please see Figure 6 , Figure 6 This is a schematic diagram of another display panel structure provided in an embodiment of this application.

[0040] like Figure 6 The display panel structure shown includes: a boundary line 601 of the encapsulation area, a straight line 602 containing multiple first inflection points in the first inflection point subset, a preset first distance threshold 603, a first wiring area 604, a second wiring area 605, a preset second distance threshold 606, and a terminal boundary line 607.

[0041] Based on the above regarding Figure 5 As can be seen from the embodiments, the first wiring area 604 includes: the encapsulation area of ​​the display panel, and the distance between the boundary line 601 of the encapsulation area of ​​the display panel and the straight line 602 where the multiple first inflection points in the first inflection point subset are located in the direction perpendicular to the display panel is not less than a preset first distance threshold 603.

[0042] The second wiring area 605 includes: terminal boundary line 607.

[0043] The distance between the boundary line 601 of the encapsulation area and the boundary line 607 of the terminal, perpendicular to the display panel, is not less than a preset second distance threshold 606, wherein the preset first distance threshold 603 is less than the preset second distance threshold 606.

[0044] It should be noted that the sum of the preset first distance threshold 603 and the preset second distance threshold 606 is the distance between the boundary line 601 of the packaging area and the terminal boundary line 607. Since the preset first distance threshold 603 is smaller than the preset second distance threshold 606, multiple second inflection points can be arranged in the second wiring area 605, and multiple signal lines can be arranged using the second inflection points, reducing the horizontal width required for signal line routing and meeting the horizontal wiring requirements of the display panel.

[0045] In one possible implementation, please see Figure 7 , Figure 7 This is a schematic diagram of another display panel structure provided in an embodiment of this application.

[0046] like Figure 7 The second wiring area also includes a third wiring inflection point set 702, which is located between the second wiring inflection point set 701 and the terminal boundary line 703. The spacing between multiple signal lines on the third wiring inflection point set is smaller than the spacing between multiple signal lines on the second wiring inflection point set. Thus, by utilizing the wiring inflection points in the third wiring inflection point set for signal line arrangement, the horizontal width required for signal line routing can be reduced, meeting the horizontal wiring requirements of the display panel.

[0047] In one possible implementation, please see Figure 8 , Figure 8 This is a schematic diagram of another display panel structure provided in an embodiment of this application.

[0048] like Figure 8 The second wiring inflection point set 801 shown includes a second inflection point subset 802 and a third inflection point subset 803. The angle 804 formed by the straight lines containing multiple second inflection points in the second inflection point subset and the straight lines containing multiple third inflection points in the third inflection point subset is greater than 90 degrees. If the angle 804 is less than 90 degrees, the vertical space occupied by the wiring will increase. In other words, if the angle 804 is less than 90 degrees, the space required for the wiring arrangement in the Y direction (vertical direction) will increase. Therefore, the angle 804 needs to be set to greater than 90 degrees to reduce the vertical space required for the wiring arrangement of the signal lines.

[0049] like Figure 8 As shown, the number of second inflection points in the second inflection point subset 802 can be greater than the number of third inflection points in the third inflection point subset 803. In this case, the wiring area is mostly located on the right side of the display panel. In one possible implementation, if the wiring area is mostly located on the left side of the display panel, the number of second inflection points will be less than the number of third inflection points. When the wiring area of ​​the display panel is located in the middle of the display panel, the number of second inflection points is the same as the number of third inflection points, and the second and third inflection points are symmetrically distributed. In this embodiment, the distribution of the number of inflection points can be determined according to the direction of the wiring area offset required by the user. Based on the set inflection points, the signal lines are arranged, which reduces the horizontal width required for the signal line routing while meeting the personalized requirements for the wiring area of ​​the display panel.

[0050] In any of the above embodiments, the signal line layout can be adjusted in terms of line width and spacing according to the available space. It is important to note that bends in the signal lines (break points) should ideally avoid locations with inclines. If a signal line has both an incline and a bend (break point), there is a risk of wire breakage or short circuit. Therefore, by placing the signal line, specifically the bend point, in a location without inclines, the risk of wire breakage or short circuit can be reduced.

[0051] This application embodiment also provides a display device 900, see [link]. Figure 9 The display device includes the features described above. Figures 1 to 8 The display panel is any one of the above embodiments. That is, the display device 900 specifically includes the display panel described in any of the above embodiments. The display device provided in this application embodiment can be other display devices with display functions, such as mobile phones, computers, televisions, and vehicle-mounted display devices; this application embodiment does not specifically limit the scope. The display device provided in this application embodiment has the beneficial effects of the display panel described in any of the above embodiments. For details, please refer to the specific descriptions of the display panel in the above embodiments; these descriptions will not be repeated here.

[0052] For the foregoing embodiments, in order to simplify the description, they are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, because according to this application, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0053] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0054] The above description of the disclosed embodiments enables those skilled in the art to make or use this 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 this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0055] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A display panel, characterized in that, The display panel includes: a target wiring area, a set of wiring inflection points, and multiple signal lines; The set of cabling inflection points includes at least: a first set of cabling inflection points and a second set of cabling inflection points; The first set of wiring inflection points is used to divide the target wiring area into a first wiring area and a second wiring area, wherein the horizontal width of the first wiring area is greater than the horizontal width of the second wiring area; the multiple signal lines respectively pass through the first wiring area and the second wiring area; The spacing between two adjacent signal lines in the first wiring area is greater than the spacing between two adjacent signal lines in the second wiring area. The second set of wiring inflection points is distributed across multiple signal lines in the second wiring area; The first set of wiring inflection points includes: a first subset of inflection points. Multiple first inflection points in the first inflection point subset are on the same horizontal straight line; The first wiring area includes: the encapsulation area of ​​the display panel, wherein the distance between the boundary line of the encapsulation area and the straight line where the plurality of first inflection points are located, perpendicular to the display panel, is not less than a preset first distance threshold. The second wiring area includes: terminal boundary lines; The distance between the boundary line of the encapsulation area and the boundary line of the terminal in the direction perpendicular to the display panel is not less than a preset second distance threshold, and the preset first distance threshold is less than the preset second distance threshold; The second wiring region also includes a third set of wiring inflection points; The third set of wiring inflection points is located between the second set of wiring inflection points and the terminal boundary line; The signal line spacing of the plurality of signal lines on the third wiring inflection point set is smaller than the signal line spacing of the plurality of signal lines on the second wiring inflection point set.

2. The display panel according to claim 1, characterized in that, Multiple signal lines in the second wiring area are arranged in the PVEE electrode area of ​​the second wiring area; or, Multiple signal lines in the second wiring area are arranged in the PVDD electrode area of ​​the second wiring area.

3. The display panel according to claim 1, characterized in that, Each of the multiple signal lines is connected to a terminal corresponding to each signal line.

4. The display panel according to claim 1, characterized in that, The second set of wiring inflection points includes: a second subset of inflection points and a third subset of inflection points. The angle between the straight lines containing multiple second inflection points in the second inflection point subset and the straight lines containing multiple third inflection points in the third inflection point subset is greater than 90 degrees.

5. The display panel according to claim 4, characterized in that, The number of second inflection points in the second inflection point subset is greater than the number of third inflection points in the third inflection point subset.

6. A display device, characterized in that, Includes the display panel as described in any one of claims 1-5.

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