Display panel and display device

Abstract

The embodiments of the present application disclose a display panel and a display device. The display panel includes a display area and a non-display area. The display area has a plurality of electrodes. The non-display area surrounds the display area. The non-display area has a plurality of wirings, and each wiring is connected to a corresponding electrode. The average thickness of the wiring with a longer length is greater than the average thickness of the wiring with a shorter length. This can reduce the resistance difference between the wiring with a longer length and the wiring with a shorter length. There is no need to increase the width of the wiring with a longer length, which is more conducive to the narrow frame design of the display panel.

Description

Technical Field

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

[0002] As the organic light-emitting diode (OLED) display technology continues to mature, the packaged touch integrated structure (DOT, Direct on-cell touch) in which the touch structure is directly made on a thin film packaging layer has also been widely used.

[0003] At present, in order to reduce the impedance difference between multiple touch lines, the line width of the touch line is improved according to the length of the touch line. The resistance of the touch line is inversely proportional to the width. In order to reduce the resistance of the longer touch line, the line width of the longer touch line is widened, thereby reducing the impedance difference between the multiple touch lines. However, the above method will increase the width of the frame of the display panel, which is not conducive to the narrow frame design. Summary of the invention

[0004] The embodiments of the present application provide a display panel and a display device, which can solve the technical problem of a large width of a border of the display panel.

[0005] An embodiment of the present application provides a display panel, including:

[0006] A display area having a plurality of electrodes;

[0007] A non-display area, at least arranged on one side of the display area, the non-display area having a plurality of wirings, each of the wirings being connected to a corresponding electrode;

[0008] Among any two of the routing lines, the average thickness of the routing line with a longer length is greater than the average thickness of the routing line with a shorter length.

[0009] Optionally, in some embodiments of the present application, the routing includes a base conductive layer;

[0010] Some of the traces further include an additional conductive layer superimposed on the base conductive layer;

[0011] In the routing line provided with the additional conductive layer, the longer the routing line is, the longer the additional conductive layer of the routing line is.

[0012] Optionally, in some embodiments of the present application, the base conductive layer includes one or more first sub-conductive layers.

[0013] Optionally, in some embodiments of the present application, the additional conductive layer includes one or more than two second sub-conductive layers.

[0014] Optionally, in some embodiments of the present application, the routing is a single conductive layer.

[0015] Optionally, in some embodiments of the present application, the electrode includes a plurality of rows of first electrodes;

[0016] The plurality of routing lines include a first routing line and a second routing line. The first routing line is arranged around one side of the display area and connected to the first electrodes of odd rows. The second routing line is arranged around the other side of the display area and connected to the first electrodes of even rows.

[0017] Optionally, in some embodiments of the present application, a plurality of first routing lines are sequentially arranged on one side of the display area, and among two adjacent first routing lines, the length of the first routing line located at the periphery is greater than the length of the first routing line located at the inner periphery, and the average thickness of the first routing line located at the periphery is greater than the average thickness of the first routing line located at the inner periphery; and / or,

[0018] Optionally, in some embodiments of the present application, multiple second routing lines are sequentially arranged on a side of the display area away from the first routing line, and among two adjacent second routing lines, the length of the second routing line located on the periphery is greater than the length of the second routing line located on the inner periphery, and the average thickness of the second routing line located on the periphery is greater than the average thickness of the second routing line located on the inner periphery.

[0019] Optionally, in some embodiments of the present application, the electrode includes multiple columns of second electrodes, the first electrode and the second electrode are arranged at intervals, the routing also includes a third routing, the third routing is arranged between the first routing and the second routing, and the third routing is connected to the second electrode.

[0020] Optionally, in some embodiments of the present application, the lengths of the first routing line and the second routing line are both greater than the length of the third routing line, the multiple third routing lines are symmetrically arranged about the central axis of the display area, and among two adjacent third routing lines, the length of the third routing line located on the periphery is greater than the length of the third routing line located on the inner periphery, and the average thickness of the third routing line located on the periphery is greater than the average thickness of the third routing line located on the inner periphery.

[0021] An embodiment of the present application further provides a display device, comprising a housing and a display panel, wherein the housing is fixed outside the display panel, and the display panel is the display panel as described above.

[0022] The embodiments of the present application adopt a display panel and a display device. By making the average thickness of the longer wiring greater than the average thickness of the shorter wiring, the resistance of the wiring is inversely proportional to the thickness of the wiring, so that the resistance difference between the longer wiring and the shorter wiring can be reduced. There is no need to increase the width of the longer wiring, which is more conducive to the narrow frame design of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a wiring diagram of the first display panel provided in the comparative embodiment of the present application;

[0025] Figure 2 is a wiring diagram of a second display panel provided in a comparative embodiment of the present application;

[0026] Figure 3 This is a wiring diagram of a third display panel provided in an embodiment of the present application;

[0027] Figure 4 For along Figure 3 Schematic diagram of the cross-sectional structure in the AA direction Figure 1 ;

[0028] Figure 5 For along Figure 3 Schematic diagram of the cross-sectional structure in the AA direction Figure 2 ;

[0029] Figure 6 This is a wiring diagram of a fourth display panel provided in an embodiment of the present application;

[0030] Figure 7 For along Figure 6 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0031] Figure 8 It is a schematic diagram of the structure of the display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the directional words such as "upper" and "lower" used 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.

[0033] The embodiments of the present application provide a display panel and a display device. The following are detailed descriptions of each. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.

[0034] See also Figure 1 and Figure 2 The display panel of the comparative embodiment of the present application includes a display area 11 and a non-display area 12, wherein the non-display area 12 surrounds the display area 11, the display area 11 is provided with a plurality of electrodes 13, and the non-display area 12 is provided with a plurality of wirings 14, wherein the wirings 14 located at the periphery are longer in length, and the wirings 14 located at the inner periphery are shorter in length. In order to achieve equal resistance design of wirings 14 of different lengths, the width of the outermost wirings 14 can be made the largest, and as it gets closer to the display area 11, the width of the wirings 14 gradually narrows, and in this way, all wirings 14 can be made equal in resistance.

[0035] However, Figure 1 and Figure 2 The design method of the routing 14 has the following disadvantages: (1) Since the width of the routing 14 gradually increases, this will cause the border width of the display panel to be larger, which is not conducive to a narrow border design; (2) Since the widths of different routings 14 are different, there is only a slight difference in the widths of different routings 14. In the actual manufacturing process, due to process deviations, the changes in the widths of different routings 14 are inconsistent, and it is difficult to predict the difference between the design value and the actual value, resulting in the inability to match the actual product with the design difference, causing great trouble and inaccuracy in the design and manufacturing process.

[0036] To solve the above problems, see Figure 3 and Figure 4The embodiment of the present application provides a display panel 100, including a display area 110 and a non-display area 120, wherein the non-display area 120 is disposed at least on one side of the display area 110. In the present embodiment, the non-display area 120 is disposed around the display area 110. Of course, the positional relationship between the display area 110 and the non-display area 120 can be appropriately modified according to the actual situation and specific requirements, as long as the non-display area 120 is disposed at least on one side of the display area 110. The display area 110 has a plurality of electrodes 130, and the non-display area 120 has a plurality of wirings 140, each of which is connected to a corresponding electrode 130; wherein, of any two wirings 140, the average thickness of the wiring 140 with a longer length is greater than the average thickness of the wiring 140 with a shorter length.

[0037] In the embodiment of the present application, by making the average thickness of the longer routing 140 greater than the average thickness of the shorter routing 140, the resistance of the routing 140 is inversely proportional to the thickness of the routing 140, thereby reducing the resistance difference between the longer routing 140 and the shorter routing 140. There is no need to increase the width of the longer routing 140, which is more conducive to the narrow frame design of the display panel 100.

[0038] Specifically, in the display panel 100 of the embodiment of the present application, the calculation formula of the resistance of the wiring 140 is:

[0039]

[0040] Wherein, ρ is the resistivity of the routing 140, L is the length of the routing 140, H is the thickness of the routing 140, and W is the width of the routing 140. By means of the above formula, the equivalent resistance of the routing 140 can be calculated, so that the equivalent resistances of different routings 140 are equal or within a certain error range. In this embodiment, the widths of different routings 140 can be made the same.

[0041] Specifically, Figure 4 As shown, all the traces 140 include a basic conductive layer 141. In addition, some traces 140 also include an additional conductive layer 142 superimposed on the basic conductive layer 141. That is, the present application increases the local thickness of some traces 140 by adding a layer structure, thereby increasing the average thickness of some traces 140.

[0042] In this embodiment, compared to Figure 1 and Figure 2As for the equal resistance design method of achieving different routings 140 by changing the width of routing 140, the present application changes the thickness of routing 140 by changing the number of conductive layers included in routing 140. The thickness of routing 140 is easier to control. Therefore, routing 140 can effectively reduce the resistance by increasing the number of conductive layers. Therefore, by adjusting the number of conductive layers included in routing 140 for equal resistance wiring, the design of routing 140 with equal resistance and equal line width can be effectively achieved, while bringing the feasibility of more precise process adjustment to the production, effectively saving the production debugging cost.

[0043] Specifically, Figure 3 and Figure 4 As shown, in the routing line 140 provided with the additional conductive layer 142, the longer the routing line 140 is, the longer the additional conductive layer 142 of the routing line 140 is. Figure 3 As shown, for a longer base conductive layer 141 , its equivalent resistance is larger. In order to reduce the equivalent resistance of a longer wire, the length of the additional conductive layer 142 superimposed on the base conductive layer 141 can be changed to adjust the equivalent resistance of the routing 140 , thereby reducing the difference in equivalent resistance of different routings 140 .

[0044] Specifically, Figure 4 and Figure 5 As shown, the basic conductive layer 141 may include one or more first sub-conductive layers 1411. This configuration is more conducive to reducing the equivalent resistance of the trace 140. Figure 4 In the illustrated embodiment, the basic conductive layer 141 includes a first sub-conductive layer 1411, that is, the basic conductive layer 141 is a single-layer structure; Figure 5 In the illustrated embodiment, the basic conductive layer 141 includes three first sub-conductive layers 1411. Of course, the number of first sub-conductive layers 1411 included in the basic conductive layer 141 can be appropriately adjusted according to actual conditions and specific requirements, and is not limited here.

[0045] Specifically, the material of the first sub-conductive layer 1411 can be selected from one or more of molybdenum, aluminum, copper and titanium. Of course, according to the actual situation and specific requirements, the material of the first sub-conductive layer 1411 can be appropriately modified and is not limited here.

[0046] Specifically, Figure 4 and Figure 5 As shown, the additional conductive layer 142 may include one or more second sub-conductive layers 1421. This configuration is more conducive to reducing the equivalent resistance of the trace 140. Figure 4 In the embodiment shown, the additional conductive layer 142 includes a second sub-conductive layer 1421, that is, the additional conductive layer 142 is a single-layer structure; Figure 5In the illustrated embodiment, the additional conductive layer 142 includes three second sub-conductive layers 1421. Of course, the number of second sub-conductive layers 1421 included in the additional conductive layer 142 can be appropriately adjusted according to actual selection and specific requirements, and is not limited here.

[0047] Specifically, the material of the second sub-conductive layer 1421 can be selected from one or more of molybdenum, aluminum, copper and titanium. Of course, according to the actual situation and specific requirements, the material of the second sub-conductive layer 1421 can be appropriately modified and is not limited here.

[0048] Specifically, Figure 6 and Figure 7 As shown, the trace 140 is a single-layer conductive layer, and the average thickness of the trace 140 with a longer length is greater than the average thickness of the trace 140 with a shorter length. In this embodiment, the average thickness of the trace 140 is adjusted by changing the local thickness of the trace 140, so that the average thickness of the trace 140 with a longer length is greater than the average thickness of the trace 140 with a shorter length. In this embodiment, the material of the trace 140 is selected from one or more of molybdenum, aluminum, copper and titanium. Of course, according to the actual selection and specific requirements, the material of the trace 140 can be appropriately modified, and is not limited here.

[0049] Specifically, in the display panel 100 of the embodiment of the present application, the electrodes 130 include multiple rows of first electrodes 131, and the multiple wirings 140 include first wirings 150 and second wirings 160. The first wirings 150 are arranged around one side of the display area 110 and connected to the first electrodes 131 of the odd rows, and the second wirings 160 are arranged around the other side of the display area 110 and connected to the first electrodes 131 of the even rows. Under this arrangement, the wirings 140 on the opposite sides of the display area 110 are symmetrical, which is conducive to the narrow frame design of the display panel 100.

[0050] Specifically, multiple first routing lines 150 are sequentially arranged on one side of the display area 110. Among two adjacent first routing lines 150, the length of the first routing line 150 located on the periphery is greater than the length of the first routing line 150 located on the inner periphery, and the average thickness of the first routing line 150 located on the periphery is greater than the average thickness of the first routing line 150 located on the inner periphery.

[0051] Specifically, among two adjacent first routing lines 150, the length of the basic conductive layer 141 of the first routing line 150 located on the periphery is greater than the length of the basic conductive layer 141 of the first routing line 150 located on the inner periphery, and the length of the additional conductive layer 142 of the first routing line 150 located on the periphery is greater than the length of the additional conductive layer 142 of the first routing line 150 located on the inner periphery.

[0052] Specifically, multiple second wirings 160 are sequentially arranged on a side of the display area 110 away from the first wiring 150. Among two adjacent second wirings 160, the length of the second wiring 160 located on the periphery is greater than the length of the second wiring 160 located on the inner periphery, and the average thickness of the second wiring 160 located on the periphery is greater than the average thickness of the second wiring 160 located on the inner periphery.

[0053] Specifically, among two adjacent second routing lines 160, the length of the basic conductive layer 141 of the second routing line 160 located on the periphery is greater than the length of the basic conductive layer 141 of the second routing line 160 located on the inner periphery, and the length of the additional conductive layer 142 of the second routing line 160 located on the periphery is greater than the length of the additional conductive layer 142 of the second routing line 160 located on the inner periphery.

[0054] Specifically, the first electrode 131 includes a plurality of first block electrodes 1311 connected in sequence along the column direction. The shape of the first block electrode 1311 may be a rhombus. Of course, according to the actual situation and specific needs, the shape of the first block electrode 1311 may also be a circle, an ellipse, a triangle, a rectangle or a pentagon, etc., which is not limited here.

[0055] Specifically, the electrode 130 includes a plurality of columns of second electrodes 132, the first electrodes 131 and the second electrodes 132 are arranged at intervals, and the wiring 140 further includes a third wiring 170, the third wiring 170 is arranged between the first wiring 150 and the second wiring 160, and the third wiring 170 is connected to the second electrode 132. Under this arrangement, the wiring of the non-display area 120 can be reasonably allocated, which is conducive to the narrow frame design of the display panel 100.

[0056] Specifically, the lengths of the first routing line 150 and the second routing line 160 are both greater than the length of the third routing line 170, and the plurality of third routing lines 170 are symmetrically arranged about the central axis of the display area 110. Among two adjacent third routing lines 170, the length of the third routing line 170 located at the periphery is greater than the length of the third routing line 170 located at the inner periphery, and the average thickness of the third routing line 170 located at the periphery is greater than the average thickness of the third routing line 170 located at the inner periphery.

[0057] Specifically, among two adjacent third routings 170, the length of the basic conductive layer 141 of the third routing 170 located on the periphery is greater than the length of the basic conductive layer 141 of the third routing 170 located on the inner periphery, and the length of the additional conductive layer 142 of the third routing 170 located on the periphery is greater than the length of the additional conductive layer 142 of the third routing 170 located on the inner periphery.

[0058] Specifically, the second electrode 132 includes a plurality of second block electrodes 1321 connected in sequence along the row direction. The shape of the second block electrodes 1321 can be a rhombus. Of course, according to the actual situation and specific needs, the shape of the second block electrodes 1321 can also be circular, elliptical, triangular, rectangular or pentagonal, etc., which is not limited here.

[0059] Specifically, in the display panel 100 of the embodiment of the present application, mutual capacitance is formed at the first electrode 131 and the second electrode 132, that is, the first electrode 131 and the second electrode 132 respectively constitute the two poles of the mutual capacitance. When a finger touches the display panel 100, since the human body is also a conductor, a capacitor will be formed with the display panel 100, and this capacitor will affect the coupling between the first electrode 131 and the second electrode 132 near the touch point, thereby changing the capacitance between the first electrode 131 and the second electrode 132. When detecting the size of the mutual capacitance, one of the first electrode 131 and the second electrode 132 sends an excitation signal, and the other of the first electrode 131 and the second electrode 132 receives the signal. In this way, the size of the capacitance value of the intersection of the first electrode 131 and the second electrode 132 can be obtained, and the coordinates of the touch point can be determined according to the two-dimensional capacitance change data of the display panel 100.

[0060] Specifically, the first electrode 131 is a sensing electrode, the first wiring 150 and the second wiring 160 are sensing wirings, the second electrode 132 is a driving electrode, and the third wiring 170 is a driving wiring.

[0061] Specifically, the first electrode 131 is a driving electrode, the first wiring 150 and the second wiring 160 are driving wirings, the second electrode 132 is a sensing electrode, and the third wiring 170 is a sensing wiring.

[0062] See also Figure 8 The embodiment of the present application further provides a display device, including a housing 200 and a display panel 100 , wherein the housing 200 is fixed outside the display panel 100 , and the display panel 100 is the display panel 100 as described above.

[0063] The above is a detailed introduction to a display panel and a display device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A display panel, characterized in that: include: A display area having a plurality of electrodes; A non-display area, at least arranged on one side of the display area, the non-display area having a plurality of wirings, each of the wirings being connected to a corresponding electrode; A thin film encapsulation layer, the wiring is arranged on the thin film encapsulation layer, and a surface of the thin film encapsulation layer close to the wiring is a flat surface; Among any two of the routing lines, the average thickness of the routing line with a longer length is greater than the average thickness of the routing line with a shorter length; The routing line comprises a basic conductive layer, the material of the basic conductive layer is selected from one or more of molybdenum, aluminum, copper and titanium, and the basic conductive layer is arranged on the flat surface; Some of the traces further include an additional conductive layer superimposed on the basic conductive layer, the material of the additional conductive layer is selected from one or more of molybdenum, aluminum, copper and titanium, and the additional conductive layer is arranged on a side of the basic conductive layer away from the flat surface; In the routing line provided with the additional conductive layer, the longer the routing line is, the longer the additional conductive layer of the routing line is.

2. The display panel according to claim 1, wherein: The base conductive layer includes one or more first sub-conductive layers.

3. The display panel according to claim 1, wherein: The additional conductive layer includes one or more than two second sub-conductive layers.

4. The display panel according to any one of claims 1 to 3, characterized in that: The electrodes include a plurality of rows of first electrodes; The plurality of routing lines include a first routing line and a second routing line. The first routing line is arranged around one side of the display area and connected to the first electrodes of odd rows. The second routing line is arranged around the other side of the display area and connected to the first electrodes of even rows.

5. The display panel according to claim 4, wherein: A plurality of first routing lines are sequentially arranged on one side of the display area, and among two adjacent first routing lines, the length of the first routing line located at the periphery is greater than the length of the first routing line located at the inner periphery, and the average thickness of the first routing line located at the periphery is greater than the average thickness of the first routing line located at the inner periphery; and / or, Multiple second routing lines are sequentially arranged on a side of the display area away from the first routing line. Among two adjacent second routing lines, the length of the second routing line located on the periphery is greater than the length of the second routing line located on the inner periphery, and the average thickness of the second routing line located on the periphery is greater than the average thickness of the second routing line located on the inner periphery.

6. The display panel according to claim 4, wherein: The electrodes include a plurality of columns of second electrodes, the first electrodes and the second electrodes are arranged at intervals, the routing lines also include a third routing line, the third routing line is arranged between the first routing line and the second routing line, and the third routing line is connected to the second electrodes.

7. The display panel according to claim 6, wherein: The lengths of the first and second lines are both greater than the length of the third line, and the plurality of third lines are symmetrically arranged about the central axis of the display area. Among two adjacent third lines, the length of the third line located at the periphery is greater than the length of the third line located at the inner periphery, and the average thickness of the third line located at the periphery is greater than the average thickness of the third line located at the inner periphery.

8. A display device, characterized in that: It comprises a housing and a display panel, wherein the housing is fixed outside the display panel, and the display panel is the display panel according to any one of claims 1 to 7.

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