Display panel and display device

Abstract

The present invention discloses a display panel and a display device. The display panel includes multiple data lines and multiple conversion lines located in a display area. Each conversion line is connected to a data line. The multiple conversion lines include a first type of conversion line and a second type of conversion line. The first type of conversion line overlaps with at least one data line, and the second type of conversion line does not overlap with any data line. At least the data lines in the area close to the display panel frame are connected to the first type of conversion line. The conversion lines are used to electrically connect the data lines to connection ports with the same arrangement order according to the arrangement order of the data lines. In this way, under the premise of ensuring a one-to-one correspondence between the data lines and the connection ports, the distance between the display area and the driver chip can be further compressed, which is conducive to narrowing the lower frame.

Description

Technical Field

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

[0002] With the development of display technology, users have higher and higher requirements for the screen-to-body ratio of display devices, and narrow-frame design has become a major development trend of display devices.

[0003] See also Figure 1 , Figure 1 The structure of the display panel 100 in the prior art is schematically shown. The display panel has a display area AA and a non-display area NA. Generally, the length of the display area AA is greater than the length of the driver chip 60, resulting in the need for the data lines 10 connected to the area near the frame of the display panel 100 to be electrically connected to the driver chip 60 by using an oblique wiring method, such as Figure 1 The wiring within the rectangular dotted box in FIG. 1A causes the distance between the display area AA and the driver chip 60 to be unable to be further compressed, and the bottom frame of the display panel 100 cannot be narrowed. Summary of the Invention

[0004] Embodiments of the present invention provide a display panel and a display device to solve the technical problem that the existing display panel and display device cannot narrow the bottom frame of the display panel.

[0005] To solve the above problems, the present invention provides the following technical solutions:

[0006] The present invention provides a display panel, comprising a display area and a non-display area surrounding the display area;

[0007] The display panel further includes:

[0008] a plurality of data lines located in the display area and extending along the first direction and arranged along the second direction;

[0009] a plurality of conversion lines located in the display area, each of the conversion lines connected to one of the data lines, the plurality of conversion lines including a first type of conversion line and a second type of conversion line, the first type of conversion line overlapping with at least one of the data lines, the second type of conversion line not overlapping with any of the data lines, and at least a portion of the data lines close to the display panel border being connected to the first type of conversion line; and

[0010] a plurality of connection ports, located in the non-display area and electrically connected to the driver chip;

[0011] The conversion lines are used to connect the data lines to the connection ports with the same arrangement order in a one-to-one correspondence according to the arrangement order of the data lines.

[0012] According to the display panel provided by the present invention, the plurality of data lines include a plurality of first data lines and a plurality of second data lines, the first data lines extend to a corner between two adjacent sides of the display area, and the second data lines extend to the side of the display area;

[0013] Each of the first data lines is connected to the first-type conversion line, and each of the second-type conversion lines is connected to the second data line.

[0014] According to the display panel provided by the present invention, a portion of the plurality of second data lines are connected to the first type conversion line; wherein, the second data line connected to the first type conversion line is located between the first data line and the second data line connected to the second type conversion line.

[0015] According to the display panel provided by the present invention, a portion of the plurality of second data lines are not connected to the conversion lines; wherein, the second data lines connected to the second type of conversion lines are located between the second data lines not connected to the conversion lines and the second data lines connected to the first type of conversion lines.

[0016] According to the display panel provided by the present invention, each of the conversion lines includes a first conversion line sub-segment and a second conversion line sub-segment connected to each other, the first conversion line sub-segment extending along the second direction and arranged along the first direction, and the second conversion line sub-segment extending along the first direction and arranged along the second direction;

[0017] The first conversion line sub-segment is correspondingly connected to the data line, and an end of the second conversion line sub-segment away from the connection port is connected to the first conversion line sub-segment.

[0018] According to the display panel provided by the present invention, the first conversion line subsegment of the first type conversion line connected to the first data line corresponds to part of the corner and part of the side, and the first conversion line subsegment of the second type conversion line connected to the second data line corresponds to part of the side.

[0019] According to the display panel provided by the present invention, the display panel further comprises a plurality of high-level voltage signal lines extending along the first direction;

[0020] On the plane where the high-level voltage signal line is located, the orthographic projection of the second conversion line sub-segment is located within the region where the high-level voltage signal line is located.

[0021] According to the display panel provided by the present invention, the data line connected to the first-type conversion line includes a first data sub-segment and a second data sub-segment, the second data sub-segment is located at an end of the first data sub-segment close to the driver chip, and the first-type conversion line is connected to the first data sub-segment; wherein, in the plane direction of the data line, the orthographic projection of the second conversion line sub-segment is located in the area where the second data sub-segment is located.

[0022] According to the display panel provided by the present invention, on the plane where the data lines are located, the orthographic projection of the second conversion line sub-segment is located between two adjacent data lines.

[0023] According to the display panel provided by the present invention, the conversion line and the data line are located in different metal layers, and the conversion line is connected to the corresponding data line through a via hole.

[0024] According to the display panel provided by the present invention, the display panel further includes:

[0025] substrate;

[0026] A driving circuit layer is provided on one side of the substrate, and the driving circuit layer includes:

[0027] a first source and drain metal layer;

[0028] a first passivation layer, covering a side of the first source and drain metal layer away from the substrate;

[0029] a second source-drain metal layer, disposed on a side of the first passivation layer away from the substrate;

[0030] a second passivation layer, covering a side of the second source and drain metal layer away from the substrate;

[0031] a third source-drain metal layer, disposed on a side of the second passivation layer away from the substrate; and

[0032] a third passivation layer, covering a side of the third source and drain metal layer away from the substrate;

[0033] The data line is located in the first source-drain metal layer or the second source-drain metal layer, and the first-type conversion line and the second-type conversion line are located in the third source-drain metal layer.

[0034] According to the display panel provided by the present invention, the driving circuit layer further includes:

[0035] a fourth source-drain metal layer, disposed on a side of the third passivation layer away from the substrate; and

[0036] a fourth passivation layer, covering a side of the fourth source and drain metal layer away from the substrate;

[0037] The first conversion line sub-segment is located in the third source-drain metal layer, the second conversion line sub-segment is located in the fourth source-drain metal layer, and the first conversion line sub-segment is connected to the second conversion line sub-segment through a via penetrating the third passivation layer.

[0038] According to the display panel provided by the present invention, the non-display area further includes a connection area located on one side of the display area, and the display area and the connection area are arranged along the first direction;

[0039] The connection area is provided with a plurality of connection lines, and the connection lines are electrically connected to the conversion lines or the data lines.

[0040] According to the display panel provided by the present invention, the connecting lines extend along the first direction and are arranged along the second direction.

[0041] According to the display panel provided by the present invention, the non-display area further includes a bending area, a fan-out area and a binding area, the fan-out area is located between the bending area and the binding area, and the connection area is located between the display area and the bending area.

[0042] The present invention provides a display device including the above-mentioned display panel.

[0043] The beneficial effects of the present invention are as follows: the display panel and display device provided by the present invention, the display panel includes multiple data lines and multiple conversion lines located in the display area, each conversion line is connected to a data line, the multiple conversion lines include a first type of conversion line and a second type of conversion line, the first type of conversion line overlaps with at least one data line, the second type of conversion line does not overlap with any data line, at least the data line in the area close to the display panel frame is connected to the first type of conversion line, the conversion line is used to electrically connect the data line to the connection port with the same arrangement order according to the arrangement order of the data lines, so that, under the premise of ensuring a one-to-one correspondence between the data line and the connection port, since the end of the first type of conversion line close to the lower frame is closer to the driver chip in the second direction than the end of the data line close to the lower frame, it is equivalent to the end close to the lower frame moving toward the middle of the display area, so that the distance between the display area and the driver chip is further compressed, which is conducive to narrowing the lower frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0045] Figure 1 It is a schematic structural diagram of a display panel in the prior art;

[0046] Figure 2 This is a schematic diagram of a first planar structure of a display panel provided by an embodiment of the present invention;

[0047] Figure 3 is a schematic diagram of a second planar structure of a display panel provided by an embodiment of the present invention;

[0048] Figure 4A This is a schematic diagram of a local wiring structure of a display panel provided by an embodiment of the present invention;

[0049] Figure 4B is a schematic diagram of another local wiring structure of a display panel provided by an embodiment of the present invention;

[0050] Figure 5A is a schematic diagram of a cross-sectional structure of a display panel provided by an embodiment of the present invention;

[0051] Figure 5B is another schematic cross-sectional structure diagram of a display panel provided by an embodiment of the present invention;

[0052] Figure 6 is a schematic diagram of a third planar structure of a display panel provided by an embodiment of the present invention;

[0053] Figure 7 This is a schematic diagram of a fourth planar structure of a display panel provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0055] See also Figure 2 An embodiment of the present invention provides a display panel 100 , which includes a display area AA and a non-display area NA.

[0056] The display area AA is used to implement the display function of the display panel 100. A pixel driving circuit composed of thin-film transistors and pixel units arranged in an array are disposed within the display area AA. The pixel units are arranged in a multi-row, multi-column array. The pixel driving circuit is used to drive the pixel units to emit light to achieve image display. The non-display area is the frame of the display panel 100, including the bottom frame.

[0057] The display panel 100 further includes a plurality of data lines 10, a plurality of conversion lines 11, and a plurality of connection ports. The plurality of data lines 10 and the plurality of conversion lines 11 are located in the display area AA, and the plurality of connection ports are located in the non-display area NA. The connection ports are electrically connected to a driver chip 60 located in the non-display area NA for providing external signals.

[0058] It should be noted that the display panel 100 includes display panels of various sizes. According to the different sizes of the display panel 100 , the number of the driving chips 60 can be set to one or more, which is not limited here.

[0059] The plurality of data lines 10 extend along the first direction and are arranged along the second direction. The data lines 10 are used to provide data signals to the pixel units. Of course, the display panel 100 also includes a plurality of other signal lines, such as a plurality of scan lines for providing scan signals to the pixel units. The plurality of scan lines are arranged to intersect with the plurality of data lines 10. The plurality of scan lines extend along the second direction and are arranged along the first direction. This is prior art and will not be described in detail here.

[0060] The first direction and the second direction are different and may be at an angle. In some examples, the first direction and the second direction are perpendicular to each other. In some examples, the first direction may be a column direction of pixel units in the display area AA, and the second direction may be a row direction of pixel units in the display area AA.

[0061] Each conversion line 20 is connected to one of the data lines 10. The plurality of conversion lines 20 include a first-type conversion line 21 and a second-type conversion line 22. The first-type conversion line 21 overlaps with at least one of the data lines 10, and the second-type conversion line 22 does not overlap with any of the data lines 10. At least a portion of the data lines 10 near the border of the display panel 100 is connected to the first-type conversion line 21. The conversion lines 20 are used to electrically connect the data lines 10 to the connection ports in the same arrangement order as the data lines 10.

[0062] The connection port is a pad of the display panel 100 , and is electrically connected to an output pin on the driver chip 60 , so as to transmit an external signal to the data line 10 through the output pin and the connection port in sequence.

[0063] It can be understood that, since the arrangement order of the connection ports is consistent with the arrangement order of the pins of the driver chip 60, the present invention provides the first-type conversion line 21 and the second-type conversion line 22. The end of the first-type conversion line 21 close to the lower frame is closer to the driver chip 60 in the second direction than the end of the data line 10 close to the lower frame connected to it. This is equivalent to moving the end of the data line 10 close to the lower frame in the area close to the frame of the display panel 100 toward the middle of the display area NA. Under the premise of ensuring a one-to-one correspondence between the data line 10 and the connection port, the distance between the display area AA and the driver chip 60 can be further compressed, which is conducive to narrowing the lower frame. For example, Figure 2 The distance d2 between the display area AA and the driving chip 60 is less than Figure 1 The distance d1 between the display area AA and the driving chip 60 is d1.

[0064] The arrangement of the first type conversion line 21 and the second type conversion line 22 makes the arrangement order of the data lines 10 the same as the arrangement order of the connection ports and is connected one-to-one, so that the data signal can be transmitted to the correct data line 10, which is beneficial to avoid poor display caused by disordered signal transmission. There is no need to change the original arrangement order of the connection ports, nor is there any need to develop and replace a new driver chip 60, which avoids the increase in the cost of the array substrate, display panel and display device, and conventional wiring operations can be performed.

[0065] In the present invention, the second type conversion line 22 can be the data line 10 in the area close to the frame of the display panel 100, or the data line 10 in the area away from the frame of the display panel 100 (that is, the data line 10 located in the middle of the display panel 100). For example, Figure 2 As shown, a portion of the data line 10 in an area close to the border of the display panel 100 is connected to the first-type conversion line 21, and another portion of the data line 10 in an area close to the border of the display panel 100 is connected to the second-type conversion line 22, wherein the data line 10 connected to the first-type conversion line 21 or the second-type conversion line 22 is arranged adjacent to each other, and the second-type conversion line 22 is farther away from the left and right borders of the display panel 100 than the first-type conversion line 21.

[0066] At this time, the sum of the number of the first-type conversion lines 21 and the second-type conversion lines 22 is equal to the number of the first data lines 11 .

[0067] Further, in one embodiment, see Figure 3 A corner A1 is defined between two adjacent sides A2 of the display area 100. The plurality of data lines 10 include a plurality of first data lines 11 and a plurality of second data lines 12. The first data lines 11 extend to the corner A1, and the second data lines 12 extend to one of the two adjacent sides A2, which is closer to the bottom frame. As described in the background art, in conventional technology, the first data lines 11 must be directly connected to the corresponding connection ports using an oblique routing method. This results in the inability to further reduce the distance between the display area AA and the driver chip 60, thereby preventing the narrowing of the bottom frame.

[0068] The difference is that the present invention provides the first type conversion line 21 and the second type conversion line 22, and each of the first data lines 11 is connected to the first type conversion line 21, and the second type conversion line 22 is connected to the second data line 12, which can ensure that the end of all the first data lines 11 close to the driver chip 60 is moved from the corner A1 to the side A2, so that all the first data lines 11 do not need to be connected to the connection port in an oblique wiring manner, so that the distance between the display area NA and the driver chip 60 is further compressed, which is conducive to further narrowing the lower frame. For example, Figure 3 The distance d3 between the display area AA and the driving chip 60 is less than Figure 2 The distance d2 between the display area AA and the driver chip 60 is denoted as d2. Furthermore, the effective line segment of the first data line 11 does not need to extend to the corner A1, so that the total lengths of the first data line 11 and the second data line 12 are consistent, which can reduce the difference in resistance and capacitance loads between the two and improve display uniformity.

[0069] In addition, in order to ensure that the multiple data lines 10 are connected to the connection ports in the correct order, the first data line 11 in the prior art generally adopts a line switching design, while the second data line 12 does not adopt a line switching design, specifically including the following two methods. The first is to adopt a single-layer routing design for the conversion line used to connect the connection port and the first data line 11. However, due to the overlapping of the conversion lines, it is easy to cause a short circuit in the same layer routing; the second is to adopt a multi-layer routing design for the conversion line used to connect the connection port and the first data line 11. This will cause multi-layer capacitance to be generated between the multi-layer routings, thereby resulting in poor signal transmission effect of the data line 10 and reduced display effect.

[0070] In the present invention, since at least part of the second data lines 12 also adopts a line-switching design, the first-type conversion lines 21 connected to the first data lines 11 will not overlap, thereby avoiding short circuits on the same layer and the generation of multi-layer capacitors.

[0071] Specifically, in Figure 3 In the embodiment, some of the plurality of second data lines 12 are connected to the second-type conversion lines 22, while the remaining second data lines 12 are connected neither to the first-type conversion lines 21 nor to the second-type conversion lines 22. Simply put, some of the plurality of second data lines 12 utilize a line-switching method, while the remaining second data lines 12 do not. In this case, the number of the first-type conversion lines 21 is the same as the number of the first data lines 11, while the number of the second-type conversion lines 22 is less than the number of the second data lines 12.

[0072] It should be noted that, to facilitate description of the technical solutions provided by the present invention, the numbers of the first data lines 11 and the second data lines 12 in the accompanying drawings are for illustration only. In actual practice, the number of first data lines 11 may be greater, and the number of second data lines 12 may be greater. As the resolution increases, the number of data lines 10 in the display area AA also increases rapidly. For example, at a resolution of 1080*2340, the number of first data lines 11 may be 720, and the number of second data lines 12 may be 1440.

[0073] Specifically, each of the conversion lines 20 includes a first conversion line sub-segment 201 and a second conversion line sub-segment 202 connected to each other, the first conversion line sub-segment 201 extending along the second direction and arranged along the first direction, the second conversion line sub-segment 202 extending along the first direction and arranged along the second direction; the first conversion line sub-segment 201 is correspondingly connected to the data line 10, and the second conversion line sub-segment 202 is connected to the first conversion line sub-segment 201 at one end away from the connection port.

[0074] In the present invention, the first conversion line sub-segment 201 of the first type conversion line 21 overlaps with at least one data line 10 , and the first conversion line sub-segment 201 of the second type conversion line 22 does not overlap with any data line 10 .

[0075] Specifically, the first conversion line sub-segment 201 of the first type of conversion line 21 connected to the first data line 11 corresponds to a part of the corner A1 and a part of the side A2, and the first conversion line sub-segment 201 of the second type of conversion line 22 connected to the second data line 12 corresponds to a part of the side A2, that is, the first conversion line sub-segment 201 of the first type of conversion line 21 connected to the first data line 11 extends from the edge of the display area AA to the middle of the display area AA.

[0076] Likewise, the first conversion line sub-segment 201 of the first-type conversion line 21 connected to the second data line 12 corresponds to a portion of the side A2 .

[0077] It should be noted that the conversion line 20 can be bent once or multiple times in the display area AA. The meaning of "bending once" is to bend once or multiple times. Figure 3 For example, each of the conversion lines 20 includes a horizontal part and a vertical part. Jumping from the horizontal part to the vertical part can be regarded as a bend. The horizontal part and the vertical part can be located in the same metal layer or in two different metal layers; "multiple bends" means that each of the conversion lines 20 can include multiple horizontal parts and multiple vertical parts.

[0078] Since the resistance and capacitance of the conversion line 20 are positively correlated with its length, excessively large resistance and capacitance may affect the display effect. To reduce the resistance and capacitance of the conversion line 20, the number of bends of the conversion line 20 must be minimized to shorten its length. Therefore, in an embodiment of the present invention, the conversion line 20 is bent once in the display area AA.

[0079] Specifically, multiple first-type conversion lines 21 are symmetrically distributed relative to the central axis of the display area AA, and multiple second-type conversion lines 22 are symmetrically distributed relative to the central axis of the display area AA. Specifically, the first conversion line sub-segments 201 of multiple first-type conversion lines 21 are symmetrically distributed relative to the central axis of the display area AA, and the second conversion line sub-segments 202 of multiple first-type conversion lines 21 are symmetrically distributed relative to the central axis of the display area AA. The first conversion line sub-segments 201 of multiple second conversion line sub-segments 202 are symmetrically distributed relative to the central axis of the display area AA, and the second conversion line sub-segments 202 of multiple second conversion line sub-segments 202 are symmetrically distributed relative to the central axis of the display area AA, so as to ensure the uniformity of resistance, capacitance, etc. of the first data line 11 and the conversion line 20, and the second data line 12 and the conversion line 20, and to ensure the display effect of the display panel 100.

[0080] On the plane where the data lines 10 are located, the second conversion line sub-segment 202 is located between two adjacent data lines 10 . The number of the second conversion line sub-segments located between the two adjacent data lines may be one or more.

[0081] Further, see Figure 4A The display panel 100 further includes a plurality of high-level voltage signal lines 40 extending along the first direction. The plurality of high-level voltage signal lines 40 are arranged at intervals along the second direction and are used to transmit external voltage signals to the pixel driving circuit of the display panel 100. In one embodiment, on the plane where the high-level voltage signal lines 40 are located, the orthographic projection of the second conversion line sub-segment 202 is located in the area where the high-level voltage signal lines 40 are located, thereby avoiding the generation of capacitance between the second conversion line sub-segment 202 and other metal traces in the display panel 100. Figure 4A The dotted frame portion in represents the overlapping portion of the orthographic projection of the second conversion line sub-segment 202 and the high-level voltage signal line 40 .

[0082] Specifically, the high-level voltage signal line 40 is in a zigzag shape, so the second conversion line sub-segment 202 in this embodiment is also in a zigzag shape.

[0083] In one embodiment, see Figure 2 and Figure 4B , the data line 10 connected to the first type conversion line 21 includes a first data sub-segment 101 and a second data sub-segment 102, the second data sub-segment 102 is located at the end of the first data sub-segment 101 close to the driver chip 60, and the first type conversion line 21 is connected to the first data sub-segment 101. The first data sub-segment 101 is the electrical portion of the data line 10, and the second data sub-segment 102 is the non-electrical portion of the data line. Wherein, in the plane direction of the data line 10, the orthographic projection of the second conversion sub-segment 22 is located in the area where the second data sub-segment 102 is located, which can avoid the generation of capacitance between the second conversion line sub-segment 202 and other metal traces in the display panel 100. Wherein, Figure 4B The dotted box portion in represents the overlapping portion of the orthographic projection of the second conversion subsegment 22 and the second data subsegment 102 .

[0084] Specifically, see Figure 5A and Figure 5B The first-type conversion line 21 and the data line 10 are located in different metal layers, and the first-type conversion line 21 is connected to the corresponding data line 10 through a via; the second-type conversion line 22 and the data line 10 are located in different metal layers, and the second-type conversion line 22 is connected to the corresponding data line 10 through a via.

[0085] In the embodiment of the present invention, Figure 5A As shown, the display panel 100 includes a substrate 101 and a driving circuit layer disposed on one side of the substrate 101. The driving circuit layer includes a first source-drain metal layer 111, a first passivation layer 112, a second source-drain metal layer 113, a second passivation layer 114, a third source-drain metal layer 115, and a third passivation layer 116. The first passivation layer 112 covers the side of the first source-drain metal layer 111 away from the substrate 101, the second source-drain metal layer 113 is disposed on the side of the first passivation layer 112 away from the substrate 101, the second passivation layer 114 covers the side of the second source-drain metal layer 113 away from the substrate 101, the third source-drain metal layer 115 is disposed on the side of the second passivation layer 114 away from the substrate 101, and the third passivation layer 116 covers the side of the third source-drain metal layer 115 away from the substrate 101. The data line 10 is located in the first source-drain metal layer 111 or the second source-drain metal layer 113 , and the conversion line 20 is located in the third source-drain metal layer 115 . Figure 5A The following description will be made by taking an example where the data line 10 is located in the second source-drain metal layer 113 and the conversion line 20 is located in the third source-drain metal layer 115 .

[0086] Furthermore, since the conversion line in the embodiment of the present invention adopts a single-bend design, the conversion line can adopt a double-layer wiring method. Specifically, Figure 5B As shown, the driving circuit layer further includes a fourth source-drain metal layer 117 and a fourth passivation layer 118. The fourth source-drain metal layer 117 is disposed on the side of the third passivation layer 116 away from the substrate 101, and the fourth passivation layer 118 covers the side of the fourth source-drain metal layer 117 away from the substrate 101. The first conversion line sub-segment 201 is located in the third source-drain metal layer 115, and the second conversion line sub-segment 202 is located in the fourth source-drain metal layer 118. The second conversion line sub-segment 202 is connected to the first conversion line sub-segment 201 via a via penetrating the third passivation layer 116.

[0087] Of course, if the conversion line 20 adopts a design of multiple bends, then correspondingly, the conversion line 20 can also adopt a multi-layer wiring method, which will not be described in detail here.

[0088] Furthermore, the driving circuit layer may further include at least one metal layer between the substrate 101 and the first source-drain metal layer 111. Figure 5A and Figure 5BTaking the display panel in FIG. 1 as an example, three metal layers are provided between the substrate 101 and the first source-drain metal layer 111. The three metal layers may include a light shielding layer 103, a first gate metal layer 107, and a second gate metal layer 109. The conversion line 20 may be provided in any one, two, or three of the light shielding layer 103, the first gate metal layer 107, and the second gate metal layer 109. Of course, one, two, or even more metal layers may be additionally provided between the substrate 101 and the first source-drain metal layer 111. The conversion line 20 may be provided in any one, two, or even more metal layers.

[0089] Specifically, the display panel 100 further includes a buffer layer 102, a barrier layer 104, a semiconductor layer 105, a first gate insulating layer 106, a second gate insulating layer 108 and an interlayer dielectric layer 110, wherein the buffer layer 102 is arranged on one side of the substrate 101, the light shielding layer 103 is arranged on the side of the buffer layer 102 away from the substrate 101, the barrier layer 104 covers the side of the light shielding layer 103 away from the substrate 101, the semiconductor layer 105 is arranged on the side of the barrier layer 104 away from the substrate 101, the first gate insulating layer 106 covers the side of the semiconductor layer 105 away from the substrate 101, and the first gate insulating layer 106 covers the side of the semiconductor layer 105 away from the substrate 101. On one side of the substrate 101, the first gate metal layer 107 is located on the side of the first gate insulating layer 106 away from the substrate 101, the second gate insulating layer 108 covers the side of the first gate metal layer 107 away from the substrate 101, the second gate metal layer 109 is located on the side of the second gate insulating layer 108 away from the substrate, the interlayer dielectric layer 110 covers the side of the second gate insulating layer 108 away from the substrate 101, and the first source and drain metal layer 111 is located on the side of the interlayer dielectric layer 110 away from the substrate 101. Since this is the existing technology, it will not be described in detail here.

[0090] Furthermore, there are multiple arrangements of the first-type conversion lines 21 and the second-type conversion lines 22 , which will be described one by one below.

[0091] In one embodiment, see Figure 6 and Figure 7 , a portion of the plurality of second data lines 12 are connected to the first type conversion line 21; wherein, the second data line 12 connected to the first type conversion line 21 is located between the first data line 11 and the second data line 12 connected to the second type conversion line 22.

[0092] The first case, such as Figure 6 As shown, Figure 6 and Figure 3The difference is that some of the second data lines 12 are not connected to the conversion lines 20; the second data lines 12 connected to the second-type conversion lines 22 are located between the second data lines 12 not connected to the conversion lines 20 and the second data lines 12 connected to the first-type conversion lines 21. Simply put, in this case, some of the second data lines 12 do not use a line switching design, and no conversion lines 20 are arranged between two adjacent second data lines 12 in this part, thereby saving space, which can be used to arrange other lines.

[0093] At this time, the sum of the number of the first-type conversion lines 21 and the second-type conversion lines 22 is less than the sum of the number of the first data lines 11 and the second data lines 12 .

[0094] The second case, such as Figure 7 As shown, Figure 7 and Figure 6 The difference is that some of the multiple second data lines 12 are connected to the first-type conversion lines 21, while the remaining second data lines 12 are connected to the second-type conversion lines 22. Simply put, in this case, each first data line 11 and second data line 12 adopts a line-switching design, which can improve the uniformity of the resistance and capacitance of the data lines 10 and the conversion lines 20 in the display area AA. In this embodiment, the second conversion line sub-segments 202 of all first-type conversion lines 21 are arranged between two adjacent data lines 10.

[0095] Please continue reading Figure 2-Figure 3 、 Figure 6-Figure 7 The non-display area NA also includes a connection area CA located on one side of the display area AA, and the display area AA and the connection area CA are arranged along the first direction; the connection area CA is provided with a plurality of connection lines 30, and the connection lines 30 are electrically connected to the conversion line 20 or the data line 10.

[0096] Furthermore, if Figure 3 、 Figure 6 and Figure 7Since the second conversion line sub-segment 202 extends along the first direction, the connection lines connected to the second conversion line sub-segment 202 can also extend along the first direction and be arranged in the second direction. That is, the extension direction of the plurality of connection lines 30 is consistent with the extension direction of the data line 10. In other words, the connection lines 30 enter the display area AA through the connection area CA. The connection lines 30 do not need to be arranged in an oblique manner in the connection area CA, which can greatly reduce the width of the connection area CA, thereby reducing the width of the lower frame of the display panel 100, which is conducive to achieving a narrow lower frame of the display panel 100.

[0097] Furthermore, the non-display area NA also includes a bending area BA1, a fan-out area FA and a binding area BA2. The fan-out area FA is located between the bending area BA1 and the binding area BA2, and the connection area CA is located between the display area AA and the bending area BA1. By setting the fan-out area FA between the bending area BA1 and the binding area BA2, the bending area BA1 is set between the connection area CA and the display area AA, and by setting the fan-out area FA on the back of the display area AA, the lower frame can be further reduced, which is conducive to achieving an extremely narrow frame.

[0098] The fan-out area FA includes a plurality of fan-out traces 50, one end of each fan-out trace 50 is electrically connected to the connection line 30, and the other end of each fan-out trace 50 is electrically connected to the connection port. Figure 7 The conversion line 20 in the fan-out area 50 needs to be arranged in an oblique manner to connect to the corresponding connection port. Since the fan-out area FA is bent to the back of the display area AA, the width of the fan-out area FA does not affect the bottom frame of the display panel 100.

[0099] An embodiment of the present invention further provides a display device. The display device includes the display panel 100 of the above embodiment. The display device can be a device with a display function, such as a mobile phone, a computer, a tablet computer, a television, or an electronic paper, but is not limited to this.

[0100] The beneficial effects are as follows: the display panel and display device provided by the present invention, the display panel and display device provided by the present invention, the display panel includes multiple data lines and multiple conversion lines located in the display area, each conversion line is connected to a data line, the multiple conversion lines include a first type of conversion line and a second type of conversion line, the first type of conversion line overlaps with at least one data line, the second type of conversion line does not overlap with any data line, at least the data line in the area close to the display panel frame is connected to the first type of conversion line, the conversion line is used to electrically connect the data line to the connection port with the same arrangement order through the conversion line according to the arrangement order of the data line. In this way, under the premise of ensuring a one-to-one correspondence between the data line and the connection port, since the end of the first type of conversion line close to the lower frame is closer to the driver chip in the second direction than the end of the data line close to the lower frame, it is equivalent to the end close to the lower frame moving toward the middle of the display area, so that the distance between the display area and the driver chip is further compressed, which is conducive to narrowing the lower frame.

Claims

1. A display panel, characterized in that: comprising a display area and a non-display area surrounding the display area, wherein the non-display area comprises a lower frame located on one side of the display area; The display panel further includes: a plurality of data lines located in the display area and extending along a first direction and arranged along a second direction; a plurality of conversion lines located in the display area, each of the conversion lines connected to one of the data lines, the plurality of conversion lines including a first type of conversion line and a second type of conversion line, the first type of conversion line overlapping with at least one of the data lines, the second type of conversion line not overlapping with any of the data lines, and at least a portion of the data lines close to the display panel border being connected to the first type of conversion line; and a plurality of connection ports, located in the non-display area and electrically connected to the driver chip; The conversion lines are used to connect the data lines to the connection ports having the same arrangement order in a one-to-one correspondence according to the arrangement order of the data lines, and in the second direction, the arrangement order of the ends of the first-type conversion lines and the second-type conversion lines close to the lower frame is the same as the arrangement order of the data lines to which the first-type conversion lines and the second-type conversion lines are connected; The plurality of data lines include a plurality of first data lines and a plurality of second data lines, the first data lines extending to a corner between two adjacent sides of the display area, and the second data lines extending to the side of the display area; Each of the first data lines is connected to the first type conversion line, and each of the second type conversion lines is connected to the second data line; Each of the conversion lines comprises a first conversion line sub-segment and a second conversion line sub-segment connected to each other, the first conversion line sub-segment extending along the second direction and arranged along the first direction, and the second conversion line sub-segment extending along the first direction and arranged along the second direction; The first conversion line sub-segment is connected to the data line correspondingly, and the end of the second conversion line sub-segment away from the connection port is connected to the first conversion line sub-segment; The data line connected to the first-type conversion line includes a first data sub-segment and a second data sub-segment, the second data sub-segment is located at an end of the first data sub-segment close to the driver chip, and the first-type conversion line is connected to the first data sub-segment; wherein, in the plane direction of the data line, the orthographic projection of the second conversion line sub-segment is located in the area where the second data sub-segment is located; The first data sub-segment is an electrical portion of the data line, and the second data sub-segment is a non-electrical portion of the data line.

2. The display panel according to claim 1, wherein: A portion of the plurality of second data lines is connected to the first type conversion line; wherein the second data line connected to the first type conversion line is located between the first data line and the second data line connected to the second type conversion line.

3. The display panel according to claim 2, wherein: A portion of the plurality of second data lines are not connected to the conversion line; wherein the second data lines connected to the second type of conversion lines are located between the second data lines not connected to the conversion line and the second data lines connected to the first type of conversion lines.

4. The display panel according to claim 1, wherein: The first conversion line subsegment of the first type conversion line connected to the first data line corresponds to part of the corner and part of the side, and the first conversion line subsegment of the second type conversion line connected to the second data line corresponds to part of the side.

5. The display panel according to claim 1, wherein: The display panel further includes a plurality of high-level voltage signal lines extending along the first direction; On the plane where the high-level voltage signal line is located, the orthographic projection of the second conversion line sub-segment is located within the region where the high-level voltage signal line is located.

6. The display panel according to claim 2, wherein: On the plane where the data lines are located, the orthographic projection of the second conversion line sub-segment is located between two adjacent data lines.

7. The display panel according to claim 1, wherein: The conversion line and the data line are located in different metal layers, and the conversion line is connected to the corresponding data line through a via hole.

8. The display panel according to claim 7, wherein: The display panel further includes: substrate; A driving circuit layer is provided on one side of the substrate, and the driving circuit layer includes: a first source and drain metal layer; a first passivation layer, covering a side of the first source and drain metal layer away from the substrate; a second source-drain metal layer, disposed on a side of the first passivation layer away from the substrate; a second passivation layer, covering a side of the second source and drain metal layer away from the substrate; a third source-drain metal layer, disposed on a side of the second passivation layer away from the substrate; and a third passivation layer, covering a side of the third source and drain metal layer away from the substrate; The data line is located in the first source-drain metal layer or the second source-drain metal layer, and the first-type conversion line and the second-type conversion line are located in the third source-drain metal layer.

9. The display panel according to claim 8, wherein: The driving circuit layer further includes: a fourth source-drain metal layer, disposed on a side of the third passivation layer away from the substrate; and a fourth passivation layer, covering a side of the fourth source and drain metal layer away from the substrate; The first conversion line sub-segment is located in the third source-drain metal layer, the second conversion line sub-segment is located in the fourth source-drain metal layer, and the first conversion line sub-segment is connected to the second conversion line sub-segment through a via penetrating the third passivation layer.

10. The display panel according to claim 1, wherein The non-display area further includes a connection area located on one side of the display area, and the display area and the connection area are arranged along the first direction; The connection area is provided with a plurality of connection lines, and the connection lines are electrically connected to the conversion lines or the data lines.

11. The display panel according to claim 10, wherein: The connecting lines extend along the first direction and are arranged along the second direction.

12. The display panel according to claim 11, wherein: The non-display area further includes a bending area, a fan-out area and a binding area. The fan-out area is located between the bending area and the binding area, and the connection area is located between the display area and the bending area.

13. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 12.

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