Display panel and display device

Abstract

The present invention discloses a display panel and a display device. Adjacent sub-binding areas of the display panel are respectively a first sub-binding area and a second sub-binding area; a fan-out line electrically connected to a binding pad closest to the second sub-binding area in the first sub-binding area is an i-th fan-out line; a fan-out line electrically connected to a binding pad closest to the first sub-binding area in the second sub-binding area is a j-th fan-out line; the j-th fan-out line includes a j-th straight line segment; the i-th fan-out line includes an i-th folded line segment; the angle between the first portion of the i-th folded line segment and the j-th straight line segment is less than a first angle threshold, and the difference between the angle between the second portion of the i-th folded line segment and the second direction and the angle between the j-th straight line segment and the second direction is less than a second angle threshold; the difference between the lengths of the j-th straight line segment and the i-th folded line segment is less than a preset length value; and along the direction away from the second sub-binding area, the angle between the first portion and the second portion of each fan-out line, including the first portion and the second portion, gradually increases.

Description

[0001] This application is a divisional application of application number 202011384842.3, application date November 30, 2020, and invention name “A display panel and display device”. Technical Field

[0002] Embodiments of the present invention relate to the field of display technology, and in particular to a display panel and a display device. Background Art

[0003] In a conventional display device, a driver chip needs to provide a signal to a display area of a display panel through a fan-out line to drive the display panel to perform display.

[0004] Due to the positioning of the driver chip and the display area signal lines, the fan-out lines from the driver chip's output pins to the display area signal lines have varying lengths. Especially when multiple driver chips are used, the impedance of the fan-out lines corresponding to the same driver chip may vary slightly. However, the impedance of adjacent fan-out lines from adjacent driver chips may differ significantly, resulting in a sudden impedance shift. This can severely distort the transmitted signal waveform, leading to issues such as split-screen display on the display panel, and negatively impacting image quality. Summary of the Invention

[0005] Embodiments of the present invention provide a display panel and a display device, which solve the problem in the prior art that the impedance difference between some adjacent fan-out lines is large, resulting in a split screen problem in the display panel.

[0006] In a first aspect, an embodiment of the present invention provides a display panel, comprising a display area and a non-display area, wherein the non-display area comprises a fan-out area and a binding area, wherein the display area, the fan-out area, and the binding area are sequentially arranged along a first direction; along a second direction, the binding area comprises at least two sub-binding areas, with a gap between adjacent sub-binding areas; and the first direction intersects the second direction.

[0007] The fan-out area is provided with a plurality of fan-out lines; the binding area is provided with a plurality of binding pads; the plurality of fan-out lines are electrically connected to the plurality of binding pads in a one-to-one correspondence; the adjacent sub-binding areas are respectively a first sub-binding area and a second sub-binding area;

[0008] Along a direction away from the second sub-binding area, at least a continuous portion of the fan-out lines electrically connected to the binding pads of the first sub-binding area in a one-to-one correspondence are folded line segments including a first portion and a second portion;

[0009] The fan-out line electrically connected to the bonding pad closest to the second sub-bonding area in the first sub-bonding area is the i-th fan-out line; the fan-out line electrically connected to the bonding pad closest to the first sub-bonding area in the second sub-bonding area is the j-th fan-out line;

[0010] The j-th fan-out line includes the j-th straight line segment; the i-th fan-out line includes the i-th fold line segment; the angle between the first portion of the i-th fold line segment and the j-th straight line segment is less than a first angle threshold; the difference between the angle between the second portion of the i-th fold line segment and the second direction and the angle between the j-th straight line segment and the second direction is less than a second angle threshold; the difference in length between the j-th straight line segment and the i-th fold line segment is less than a preset length value;

[0011] Along the direction away from the second sub-binding area, the angle between the first portion and the second portion of each fan-out line including the first portion and the second portion gradually increases, so that the resistance difference between two adjacent fan-out lines is less than a preset resistance value.

[0012] In a second aspect, an embodiment of the present invention further provides a display device, which includes: the display panel described in the first aspect.

[0013] In a display panel and a display device provided by embodiments of the present invention, adjacent sub-binding regions are respectively a first sub-binding region and a second sub-binding region. In a direction away from the second sub-binding region, at least a continuous portion of the fan-out lines electrically connected to the bonding pads of the first sub-binding region in a one-to-one correspondence are configured to be zigzag segments including a first portion and a second portion. The fan-out line electrically connected to the bonding pad closest to the second sub-binding area in the first sub-binding area is the i-th fan-out line; the fan-out line electrically connected to the bonding pad closest to the first sub-binding area in the second sub-binding area is the j-th fan-out line; the j-th fan-out line includes the j-th straight line segment; the i-th fan-out line includes the i-th zigzag line segment; the angle between the first portion of the i-th zigzag line segment and the j-th straight line segment is less than a first angle threshold; the difference between the angle between the second portion of the i-th zigzag line segment and the second direction and the angle between the j-th straight line segment and the second direction is less than a second angle threshold; the length difference between the j-th straight line segment and the i-th zigzag line segment is less than a preset length value; and the angle between the first portion and the second portion of each fan-out line, including the first portion and the second portion, gradually increases in a direction away from the second sub-binding area, so that the resistance difference between two adjacent fan-out lines is less than a preset resistance value. Through the above configuration, the length difference between the j-th fan-out line and the i-th fan-out line is reduced, thereby avoiding a sudden impedance change between the j-th fan-out line and the i-th fan-out line. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0015] Figure 1 This is a schematic structural diagram of a display panel in the prior art;

[0016] Figure 2 Schematic diagram of impedance change of fan-out line in the prior art;

[0017] Figure 3 is a structural schematic diagram of a display panel provided by an embodiment of the present invention;

[0018] Figure 4 for Figure 3 Schematic diagram of the AA area in FIG;

[0019] Figure 5 is a structural diagram of another display panel provided by an embodiment of the present invention;

[0020] Figure 6 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0021] Figure 7 A schematic structural diagram of a circular display panel provided for the implementation of the present invention;

[0022] Figure 8 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0023] Figure 9 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0024] Figure 10 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0025] Figure 11 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0026] Figure 12 is a schematic structural diagram of a display device provided by an embodiment of the present invention;

[0027] Figure 13 is a structural schematic diagram of another display device provided by an embodiment of the present invention;

[0028] Figure 14 This is a structural diagram of another display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be fully described below in conjunction with the accompanying drawings of the embodiments of the present invention through specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] Figure 1 FIG. 1 is a schematic diagram of the structure of a display panel in the prior art. Figure 1 As shown, it includes multiple driver chips, Figure 1 In the exemplary embodiment, two driver chips are set, namely driver chip IC1 and driver chip IC2. Driver chip IC1 and driver chip IC2 are adjacent. Each signal line of the display area needs to be electrically connected to each port of the driver chip through a fan-out line. Each fan-out line corresponding to the driver chip IC1 and the two adjacent fan-out lines electrically connected to different driver chips in the driver chip IC are respectively Figure 1 Since there is a gap between the driver chip IC1 and the driver chip IC2, the length difference between the nth fan-out line and the n+1th fan-out line is large, and therefore the impedance difference between the nth fan-out line and the n+1th fan-out line is also large. Figure 2 This is a schematic diagram of the impedance change of the fan-out line, see Figure 2 , the impedance between the nth fan-out line and the n+1th fan-out line suddenly changes. Due to the large impedance difference between the nth fan-out line and the n+1th fan-out line, the transmitted signal is severely distorted, which can easily cause the display panel to appear split-screen, affecting the display effect.

[0031] In view of this, an embodiment of the present invention provides a display panel. Figure 3 is a structural diagram of a display panel provided by an embodiment of the present invention, such as Figure 3 As shown, the display panel provided by an embodiment of the present invention includes a display area 10 and a non-display area 20. The non-display area 20 includes a fan-out area 21 and a binding area 22. The display area 10, the fan-out area 21, and the binding area 22 are arranged sequentially along a first direction X. Along a second direction Y, the binding area 22 includes at least two sub-binding areas, with gaps between adjacent sub-binding areas. The first direction X intersects the second direction Y. Figure 3 Two sub-binding regions are exemplarily provided. For ease of description, the adjacent sub-binding regions are labeled as a first sub-binding region 221A and a second sub-binding region 221B. The fan-out region 21 is provided with a plurality of fan-out lines 211. The binding region 22 is provided with a plurality of bonding pads 222; the plurality of fan-out lines 211 are electrically connected to the plurality of bonding pads 222 in a one-to-one correspondence. The driver chip bound to the sub-binding region can transmit the required signals to the various signal lines in the display area 10 via each fan-out line 211.

[0032] It should be noted that, in the embodiment of the present invention, each fan-out line may include, for example, a fan-out line providing a data signal, a fan-out line providing a gate scan signal, a fan-out line providing a clock signal, a fan-out line providing a power signal, etc.

[0033] Figure 4 for Figure 3 AA area in ( Figure 3In the direction away from the second sub-binding area 221B, at least a continuous portion of the fan-out lines electrically connected to the bonding pads of the first sub-binding area 221A in a one-to-one correspondence are folded line segments including the first portion 211A and the second portion 211B.

[0034] The fan-out line electrically connected to the bonding pad closest to the second sub-bonding area 221B in the first sub-bonding area 221A is the i-th fan-out line. The fan-out line electrically connected to the bonding pad closest to the first sub-bonding area 221A in the second sub-bonding area 221B is the j-th fan-out line.

[0035] The j-th fan-out line includes the j-th straight line segment, the i-th fan-out line includes the i-th fold line segment, and the angle between the first portion 211A of the i-th fold line segment and the j-th straight line segment is less than a first angle threshold. In this embodiment of the present invention, the first portion 211A of the i-th fold line segment is set to be as parallel as possible to the j-th straight line segment. That is, when the angle between the first portion 211A of the i-th fold line segment and the j-th straight line segment is less than the first angle threshold, the first portion 211A of the i-th fold line segment can be approximately considered to be parallel to the j-th straight line segment.

[0036] The difference between the angle θ1 between the second portion 211B of the i-th fold line segment and the second direction Y and the angle θ2 between the j-th straight line segment and the second direction Y is less than a second angle threshold. In this embodiment of the present invention, the angle θ1 between the second portion 211B of the i-th fold line segment and the second direction Y and the angle θ2 between the j-th straight line segment and the second direction Y are set to be as equal as possible. If the difference between the angle θ1 between the second portion 211B of the i-th fold line segment and the second direction Y and the angle θ2 between the j-th straight line segment and the second direction Y is less than the second angle threshold, it can be approximately considered that the angle θ1 between the second portion 211B of the i-th fold line segment and the second direction Y and the angle θ2 between the j-th straight line segment and the second direction Y are equal.

[0037] When the length difference between the i-th fan-out line and the j-th fan-out line in the prior art is too large, the j-th fan-out line, which is the longer line, is kept straight, that is, the j-th fan-out line includes the j-th straight line segment. The i-th fan-out line is designed to include the i-th folded line segment. Among them, the first portion 211A pulled out from the display area 10 in the i-th folded line segment basically remains parallel to the j-th straight line segment. The length of the j-th straight line segment is L1, and the length of the first portion 211A in the i-th folded line segment is L2. The angle θ1 between the second portion 211B in the i-th folded line segment and the second direction Y is basically consistent with the angle θ2 between the j-th straight line segment and the second direction Y, that is, θ1=θ2. The length of the second portion 211B in the i-th folded line segment is L3. This setting can ensure that the length of the j-th straight line segment is basically the same as the length of the i-th folded line segment, that is, L1≈L2+L3. Therefore, the impedance mutation between the j-th fan-out line and the i-th fan-out line in two adjacent self-binding areas can be avoided. The fact that the length of the j-th straight line segment is substantially the same as the length of the i-th broken line segment mentioned in the embodiment of the present invention means that the length difference between the j-th straight line segment and the i-th broken line segment is smaller than the tolerance range allowed by the product. For example, a preset length value is set. If the length difference between the j-th straight line segment and the i-th broken line segment is smaller than the preset length value, the problem of excessive impedance difference between the j-th fan-out line and the i-th fan-out line can be avoided.

[0038] Figure 3 as well as Figure 4 In the exemplary configuration, ten consecutive fan-out lines electrically connected to the bonding pads of the first sub-binding area 221A in a direction away from the second sub-binding area 221B are configured as zigzag lines comprising a first portion 211A and a second portion 211B. The angle β between the first and second portions of each fan-out line, including both the first and second portions, gradually increases in the direction away from the second sub-binding area 221B, such that the resistance difference between two adjacent fan-out lines is less than a predetermined resistance value. Starting with the i-th fan-out line and including the ends of the zigzag lines, the angle β between the first and second portions of each fan-out line electrically connected to the bonding pads of the first sub-binding area 221A in a direction away from the second sub-binding area 221B gradually increases until the fan-out line transforms from a zigzag line segment into a straight line segment.

[0039] In this embodiment of the present invention, the i-th fan-out line in adjacent sub-binding areas is configured to include the i-th zigzag line segment, and the j-th fan-out line is configured to include the j-th straight line segment. The angle between the first portion of the i-th zigzag line segment and the j-th straight line segment is set to be less than a first angle threshold, and the difference between the angle between the second portion of the i-th zigzag line segment and the second direction and the angle between the j-th straight line segment and the second direction is set to be less than a second angle threshold. This ensures that the length difference between the j-th straight line segment and the i-th zigzag line segment is less than a preset length value, thereby avoiding the problem of screen splitting caused by a large impedance difference between the i-th and j-th fan-out lines. Furthermore, this embodiment of the present invention further configures the angle between the first and second portions of each fan-out line, including the first and second portions, to gradually increase in a direction away from the second sub-binding area, so that the resistance difference between two adjacent fan-out lines is less than a preset resistance value, thus avoiding large impedance differences between fan-out lines within the same sub-binding area. Ultimately, this embodiment of the present invention ensures that the impedance of each fan-out line in the entire binding area changes continuously and smoothly, avoiding signal distortion and display quality issues caused by large impedance differences between adjacent fan-out lines. Furthermore, in the embodiments of the present invention, each fan-out line is substantially straight or zigzag, eliminating the need for complex wiring, resulting in a simple design and strong feasibility. This avoids parasitic capacitance with other circuits in the non-display area.

[0040] Based on the above embodiment, optionally, the first direction is perpendicular to the second direction. For example, the first direction is the extending direction of each data line in the display area, and the second direction is the extending direction of each scan line in the display area.

[0041] Optionally, the preset resistance value in each of the above embodiments is 500Ω. In the embodiment of the present invention, the resistance difference between adjacent fan-out lines in the first and second parts along the direction away from the second sub-binding area is set to be less than the above preset resistance value. The resistance difference between any adjacent fan-out lines in the entire binding area can also be set to be less than the above preset resistance value, so that the impedance of each fan-out line in the entire binding area changes continuously and smoothly.

[0042] Optionally, the first angle threshold can be set to 3°, that is, when the angle between the first portion 211A of the i-th fold line segment and the j-th straight line segment is less than 3°, it can be approximately considered that the first portion 211A of the i-th fold line segment is parallel to the j-th straight line segment.

[0043] Optionally, the second angle threshold may be set to 5°. When the difference between the angle θ1 between the second portion 211B of the i-th fold line segment and the second direction Y and the angle θ2 between the j-th straight line segment and the second direction Y is less than 5°, the angle θ1 between the second portion 211B of the i-th fold line segment and the second direction Y and the angle θ2 between the j-th straight line segment and the second direction Y can be approximately considered equal.

[0044] Optionally, the angle between the first and second portions of the same fan-out line is set to be greater than 90°. If the first and second portions are too small, the connection between the first and second portions is prone to breakage. Therefore, the present invention implements the angle between the first and second portions of the same fan-out line to be greater than 90° to prevent breakage.

[0045] In other embodiments, if the angle between the first and second parts of the same fan-out line is less than or equal to 90°, the first and second parts may be connected by a third part. The third part is a straight line segment, and the angle between the first and third parts and the angle between the second and third parts are greater than 90°. Figure 5 As shown, if the angle β between the first portion 211A and the second portion 211B of the same fan-out line is less than 90°, then the first portion 211A is connected to the second portion 211B through the third portion 211C, the third portion 211C is a straight line segment, and the angle α1 between the first portion 211A and the third portion 211C and the angle α2 between the second portion 211B and the third portion 211C are both greater than 90°.

[0046] In other embodiments, Figure 6 As shown, the third part can also be set as an arc. Furthermore, the tangent line at the connection between the first part 211A and the third part 211C is parallel to the first part 211A, and the tangent line at the connection between the second part 211B and the third part 211C is parallel to the second part 211B. It should be noted that in the embodiment of the present invention, the tangent line at the connection between the first part 211A and the third part 211C is parallel to the first part 211A, and the tangent line at the connection between the second part 211B and the third part 211C is parallel to the second part 211B, which means that within the product tolerance range, the tangent line at the connection between the first part 211A and the third part 211C is basically parallel to the first part 211A, and the tangent line at the connection between the second part 211B and the third part 211C is basically parallel to the second part 211B.

[0047] When the angle between the first and second parts of the same fan-out line is less than or equal to 90°, the embodiment of the present invention can avoid the problem of the fan-out line being easily broken due to the angle between the first and second parts being too small by setting a third part between the first and second parts. Since the third part is a transition connecting line connecting the first and second parts, the length of the third part is very short and almost negligible, so the effects of the above-mentioned embodiments can also be achieved, that is, the length difference between the j-th straight line segment and the i-th broken line segment is less than the preset length value, avoiding the problem of screen splitting caused by the impedance difference between the i-th fan-out line and the j-th fan-out line being too large. The resistance difference between the two adjacent fan-out lines corresponding to the same sub-binding area is less than the preset resistance value, and the impedance of each fan-out line in the entire binding area changes continuously and smoothly.

[0048] It should be noted that the display panel described in the embodiment of the present invention may be a display panel of a conventional shape, such as a rectangular or circular shape, or may be a special-shaped display panel. Figure 7 The present invention provides a structural schematic diagram of a circular display panel. Figure 7 The configuration of the fan-out lines corresponding to the sub-binding areas can be found in the description of the above embodiments, which will not be elaborated herein in detail.

[0049] Figure 8 A schematic structural diagram of another display panel provided by an embodiment of the present invention. Figure 8 The display panel includes an opening area 30, and the opening area 30 is located between adjacent sub-binding areas. Figure 8 The opening area 30 is located between the first sub-binding area 221A and the second sub-binding area 221B. For display panels used in the automotive field, if space needs to be made for other devices, it is generally necessary to set an opening area on the display panel to form a special shape. For example, Figure 8 The opening area 30 of the display panel is provided with components such as vehicle buttons.

[0050] Optionally, the fan-out region 21 may include a first fan-out region 212 and a second fan-out region 213. The first fan-out region 212 is located between the display region 10 and the opening region 30. The second fan-out region 213 is located within the opening region 30, the sub-binding region, and the area surrounding the first fan-out region 212. The first portion 211A and the second portion 211B are located in the first fan-out region 212. The fan-out line further includes a fourth portion 211D, which is located within the second fan-out region 213; the extension direction of the fourth portion 211D is parallel to the first direction X.

[0051] Since the display panel has an opening area 30 between adjacent sub-binding areas, the fan-out lines extending from the binding pads of each binding area need to first be pulled upward along the first direction X in the second fan-out area 213 for a certain distance to form the fourth part 211D. When the fan-out line extends to the first fan-out area 212, part of the fan-out line is designed as a broken line segment.

[0052] In other embodiments, the fourth portion may also be provided with a certain angle with the first direction, for example, Figure 9 The angle between the extension direction of the fourth portion 211D and the first direction is greater than 0° and less than 90°. The angle γ1 between the fourth portion of the i-th fan-out line and the second direction Y is the same as the angle γ2 between the fourth portion of the j-th fan-out line and the second direction.

[0053] For the convenience of comparison, the two situations where the fourth portion is parallel to the first direction and the angle between the extending direction of the fourth portion and the first direction is greater than 0° and less than 90° are shown in FIG. Figure 10 See Figure 10, taking the j-th straight line segment as an example for introduction, since the positions of the signal lines connected by the j-th straight line segment in the display area remain unchanged, a certain angle is set between the fourth part 211D and the first direction X. Compared with the case where the fourth part 211D is parallel to the first direction X (for convenient comparison, in the case where the fourth part 211D is parallel to the first direction X, the fourth part and the j-th straight line segment are set as dashed lines), the projection length of the j-th straight line segment in the first direction X becomes smaller. As Figure 10 , when the included angle between the extending direction of the fourth part and the first direction is greater than 0° and less than 90°, the projection length of the j-th straight line segment in the first direction X is S2. When the fourth part is parallel to the first direction, the projection length of the j-th straight line segment in the first direction X is S1, and S2 < S1. Therefore, when the included angle between the extending direction of the fourth part and the first direction is greater than 0° and less than 90°, the length of the first fan-out area 212 in the first direction X decreases, and thus the length of the fan-out area 21 in the first direction X decreases, which can reduce the border of the display panel.

[0054] Based on the above embodiments, refer to Figure 9 , the corner of the side edge of the opening area 30 adjacent to the display area 10 and adjacent to the second sub-bonding area 221B is M, and the direction of the line connecting the bonding pad closest to the first sub-bonding area 221A in the second sub-bonding area 221B and the corner M is the third direction Z. The fourth part 211D of the i-th fan-out line is parallel to the third direction Z. Setting the fourth part 211D of the i-th fan-out line parallel to the third direction Z can minimize the length of the first fan-out area in the first direction to reduce the lower border of the display panel.

[0055] Optionally, the embodiments of the present invention can be applied to the case where the fan-out area is bent. Figure 11 This is a schematic structural diagram of another display panel provided by an embodiment of the present invention. As Figure 11 shown, the fan-out area 21 of the display panel provided by the embodiment of the present invention may further include a bending area 214. The fan-out line 211 further includes a fifth part 211E, and the fifth part 211E is parallel to the first direction X. The fifth part 211E is located in the bending area 214, the first part 211A and the second part 211B are located in the fan-out area between the bending area 214 and the bonding area 22, and the bending axis P of the bending area 214 is perpendicular to the first direction X. Since the bending stress generated when the bending area 214 is bent easily causes the fan-out line to break, it is necessary to minimize the length of the fan-out line in the bending area 214 as much as possible. Therefore, in the embodiment of the present invention, the fan-out lines located in the bending area 214 are set parallel to the first direction X so that the fan-out lines in the bending area 214 are the shortest. After the fan-out line extends out of the bending area, some of the fan-out lines are set as broken line segments including the first part and the second part, or set as oblique pull lines having a certain angle with the first direction.

[0056] Based on the same inventive concept, an embodiment of the present invention further provides a display device. The display device includes the display panel described in any embodiment of the present invention. Therefore, the display device provided by the embodiment of the present invention has the corresponding beneficial effects of the display panel provided by the embodiment of the present invention, which will not be described in detail here. Exemplarily, the display device can be an electronic device such as a mobile phone, a computer, a smart wearable device (e.g., a smart watch), and an in-vehicle display device, which is not limited in the embodiment of the present invention.

[0057] For example, Figure 12 FIG. 1 is a schematic diagram of the structure of a display device provided by an embodiment of the present invention. Figure 12 As shown, the display device 100 includes the display panel 101 in the above embodiment.

[0058] It should be noted that the display device provided by the embodiment of the present invention may include at least one driver chip. If the display device includes multiple driver chips, the multiple driver chips are bound to the multiple sub-binding areas in a one-to-one correspondence.

[0059] In other embodiments, the driver chip may further include a reference circuit setting area. The reference circuit setting area generally sets important circuits such as a reference voltage source and a reference current source. To prevent differences in the signals transmitted by the reference voltage source, reference current source, etc. to the various signal terminals of the driver chip, the reference circuit setting area is generally set in the center area of the driver chip, and signal terminal setting areas are set on the left and right sides of the reference circuit setting area, and each signal terminal setting area is set with a signal terminal. Therefore, in an embodiment of the present invention, the signal terminal setting area can also correspond one-to-one with the sub-binding area.

[0060] In addition, for medium-to-large-sized display panels, multiple driver chips are generally provided, and the multiple driver chips are bound to multiple sub-binding areas of the display panel in a one-to-one correspondence.

[0061] Figure 13 FIG. 1 is a structural diagram of another display device provided by an embodiment of the present invention. Figure 13 As shown, the exemplary display device includes four driver chips, namely driver chip IC1, driver chip IC2, driver chip IC3 and driver chip IC4.

[0062] Especially for those display devices that need to reserve space for mechanism avoidance, the sub-binding area needs to be shifted. Figure 13 As shown in the figure, due to the mechanism avoidance at the lower left side, the driver chip originally located in the middle of the non-display area below the display area needs to be moved to the right side. Figure 14As shown, for medium and large-sized display panels, multiple driver chips are generally provided, and the multiple driver chips are bound one by one to multiple sub-binding areas of the display panel. Due to the avoidance of the entire machine mechanism, the two outermost driver chips, namely driver chip IC1 and driver chip IC4, need to be shifted toward the internal driver chip. Driver chip IC1 shifts toward driver chip IC2, from the original position of the dotted box to the current position. Driver chip IC4 shifts toward driver chip IC3, from the original position of the dotted box to the current position. Due to the avoidance of the mechanism, the resistance difference between the i-th fan-out line and the j-th fan-out line corresponding to the adjacent driver chips will be further increased, causing a split-screen display problem. Therefore, the embodiment of the present invention can significantly improve the problem of excessive difference in fan-out line impedance caused by the movement of the driver chip due to the avoidance of the mechanism.

[0063] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel comprising a display area and a non-display area, characterized in that: The non-display area includes a fan-out area and a binding area, and the display area, the fan-out area, and the binding area are arranged in sequence along a first direction; the display area includes a plurality of data lines arranged along a second direction; along the second direction, the binding area includes at least two sub-binding areas, with a gap between adjacent sub-binding areas; the first direction intersects the second direction; The fan-out area is provided with a plurality of fan-out lines; the binding area is provided with a plurality of binding pads; one end of the plurality of fan-out lines is electrically connected to the plurality of binding pads in a one-to-one correspondence, and the other end of the fan-out line is electrically connected to the data line in a one-to-one correspondence; the adjacent sub-binding areas are respectively a first sub-binding area and a second sub-binding area; along a direction away from the second sub-binding area, among the fan-out lines electrically connected to the binding pads of the first sub-binding area in a one-to-one correspondence, at least a continuous portion of the fan-out lines is a broken line segment including a first portion and a second portion; The fan-out line electrically connected to the bonding pad closest to the second sub-bonding area in the first sub-bonding area is the i-th fan-out line; the fan-out line electrically connected to the bonding pad closest to the first sub-bonding area in the second sub-bonding area is the j-th fan-out line; The j-th fan-out line includes the j-th straight line segment; the i-th fan-out line includes the i-th fold line segment; the angle between the first portion of the i-th fold line segment and the j-th straight line segment is less than a first angle threshold, and the difference between the angle between the second portion of the i-th fold line segment and the second direction and the angle between the j-th straight line segment and the second direction is less than a second angle threshold; the difference between the lengths of the j-th straight line segment and the i-th fold line segment is less than a preset length value; wherein the first angle threshold is 3°, and the second angle threshold is 5°; Along a direction away from the second sub-binding area, an angle between the first portion and the second portion of each fan-out line including the first portion and the second portion gradually increases, so that a resistance difference between two adjacent fan-out lines is less than a preset resistance value; Along the first direction, in a region from an end of the first portion close to the display area to an end of the second portion away from the display area, the j-th fan-out line is a straight line segment.

2. The display panel according to claim 1, wherein: The first direction is perpendicular to the second direction.

3. The display panel according to claim 1, wherein: The preset resistance value is 500Ω.

4. The display panel according to claim 1, wherein: An angle between the first portion and the second portion of the same fan-out line is greater than 90°.

5. The display panel according to claim 1, wherein: The angle between the first portion and the second portion of the same fan-out line is less than or equal to 90°; The first portion and the second portion are connected by a third portion; the third portion is a straight line segment; and the angle between the first portion and the third portion and the angle between the second portion and the third portion are greater than 90°.

6. The display panel according to claim 1, wherein: The angle between the first portion and the second portion of the same fan-out line is less than or equal to 90°; The first portion and the second portion are connected by a third portion; the third portion is an arc.

7. The display panel according to claim 6, wherein: A tangent line at a connection point between the first portion and the third portion is parallel to the first portion, and a tangent line at a connection point between the second portion and the third portion is parallel to the second portion.

8. The display panel according to claim 1, wherein: The display panel includes an opening area; the opening area is located between adjacent sub-binding areas.

9. The display panel according to claim 8, wherein: The fan-out area includes a first fan-out area and a second fan-out area; the first fan-out area is located between the display area and the opening area; the second fan-out area is located in the opening area, the sub-binding area and the area surrounding the first fan-out area; the first portion and the second portion are located in the first fan-out area; The fan-out line further includes a fourth portion, and the fourth portion is located in the second fan-out area; an extending direction of the fourth portion is parallel to the first direction.

10. The display panel according to claim 8, wherein The fan-out area includes a first fan-out area and a second fan-out area; the first fan-out area is located between the display area and the opening area; the second fan-out area is located in the opening area, the sub-binding area and the area surrounding the first fan-out area; the first portion and the second portion are located in the first fan-out area; The fan-out line further includes a fourth portion, and the fourth portion is located in the second fan-out area; The included angle between the extending direction of the fourth portion and the first direction is greater than 0° and less than 90°; An angle between the fourth portion of the i-th fan-out line and the second direction is the same as an angle between the fourth portion of the j-th fan-out line and the second direction.

11. The display panel according to claim 10, wherein: The direction of the line connecting the binding pad in the second sub-binding area that is closest to the first sub-binding area and the corner of the opening area adjacent to the side edge of the display area and adjacent to the second sub-binding area is a third direction; the fourth portion of the i-th fan-out line is parallel to the third direction.

12. The display panel according to claim 1, wherein The fan-out region includes a bending region; the fan-out line further includes a fifth portion; the fifth portion is parallel to the first direction; The fifth portion is located in the bending area; the first portion and the second portion are located in the fan-out area between the bending area and the binding area; and the bending axis of the bending area is perpendicular to the first direction.

13. The display panel according to claim 1, wherein The display area includes an irregular-shaped border.

14. The display panel according to claim 1, wherein The non-display area includes an irregular-shaped border.

15. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 14.

16. The display device according to claim 15, wherein: It comprises a plurality of driving chips; the plurality of driving chips are bound to the plurality of sub-binding areas in a one-to-one correspondence.

17. The display device according to claim 15, wherein: including at least one driver chip; The driving chip includes a reference circuit setting area and signal terminal setting areas located on both sides of the reference circuit setting area; the signal terminal setting areas correspond to the sub-binding areas in a one-to-one manner.

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