Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device, relates to the technical field of display, and aims to solve the problem that the screen-to-body ratio of the display panel is large due to the fact that many data lines are arranged in a transition area in the related technology. The display panel is provided with a light-transmitting area, a display area and a transition area located between the light-transmitting area and the display area, the display panel comprises a plurality of first data lines and a plurality of second data lines which are located in the display area, each first data line comprises two first main body parts which are oppositely arranged, and each second data line comprises two second main body parts which are oppositely arranged; a first connecting part is connected between the two first main body parts, and the first connecting part is located in the transition area; the second data line comprises two second main body parts which are oppositely arranged, a second connecting part is connected between the two second main body parts, and the second connecting part is located in the display area.

Description

Technical Field

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

[0002] In order to meet the functional requirements of the display device, holes are usually dug on the display panel to form a light-transmitting area, and then functional devices such as cameras, fingerprint recognition elements, and infrared sensing elements are placed in the light-transmitting area to enable the functional devices to play corresponding roles.

[0003] In the related art, a display panel is usually provided with a transition area around the light-transmitting area for the routing of signal lines such as data lines. The transition area eventually becomes the border area of ​​the light-transmitting area and does not participate in the display of the picture. When a large number of data lines are arranged in the transition area, the area of ​​the border area will increase, affecting the screen-to-body ratio of the display panel. Summary of the invention

[0004] The embodiments of the present application provide a display panel and a display device, which are used to solve the problem in the related art that the screen-to-body ratio of the display panel is large due to the large number of data lines arranged in the transition region.

[0005] On the one hand, an embodiment of the present application provides a display panel, which has a light-transmitting area, a display area, and a transition area located between the light-transmitting area and the display area, the display panel includes a plurality of first data lines and a plurality of second data lines located in the display area, the first data line includes two first main body portions arranged opposite to each other, a first connection portion is connected between the two first main body portions, and the first connection portion is located in the transition area; the second data line includes two second main body portions arranged opposite to each other, a second connection portion is connected between the two second main body portions, and the second connection portion is located in the display area.

[0006] In some embodiments, the number of the first data lines is less than or equal to the number of the second data lines.

[0007] In some embodiments, the second connecting portion includes two first connecting segments extending along a first direction and a second connecting segment connecting the two first connecting segments; the second main body portion extends along a second direction, and the second direction intersects with the first direction; the first connecting segment and the second main body portion are respectively located in different film layers of the display panel.

[0008] In some embodiments, the display panel further includes a plurality of third data lines located in the display area, the extension direction of the third data lines avoids the transition area, and the third data lines and the second connecting segments are respectively located in different film layers of the display panel.

[0009] In some embodiments, the plurality of second connection portions are located on both sides of the light-transmitting area and are symmetrical about an axis of the display panel passing through a geometric center of the light-transmitting area.

[0010] In some embodiments, the plurality of second data lines are arranged side by side and include a first data line group located in a first region and a second data line group located in a second region, and the plurality of first data lines are located between the first region and the second region.

[0011] In some embodiments, the first data line group and the second data line group are symmetrical about an axis of the display panel passing through the geometric center of the light-transmitting area; the plurality of first data lines include a third data line group and a fourth data line group, the third data line group and the fourth data line group are symmetrical about the axis, and the number of the first data lines in the third data line group is equal to the number of the second data lines in the first data line group.

[0012] In some embodiments, the first connection portion and the first main body portion are respectively located in different film layers of the display panel.

[0013] In some embodiments, the first connection portion and the second connection portion are located on a same film layer of the display panel.

[0014] On the other hand, an embodiment of the present application further provides a display device, which includes the display panel as described in any of the above embodiments.

[0015] For the display panel provided in the embodiment of the present application, since the second connection part is arranged in the display area, the second connection part is wound from the display area and the second data line is turned on, which can effectively reduce the number of the first data line and the first connection part, thereby reducing the area of ​​the transition area occupied by the first connection part, thereby improving the screen ratio of the display panel. In addition, since the first connection part is located in the transition area, the first connection part is wound in the transition area and used for the conduction of the first data line, which can also avoid the excessive number of second connection parts in the display area affecting the picture display in the area where they are located. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 is a schematic diagram of the structure of a display panel provided in some embodiments of the present application;

[0018] Figure 2 yes Figure 1 A magnified structural diagram of the middle A area;

[0019] Figure 3 yes Figure 2 A magnified structural diagram of the middle B area;

[0020] Figure 4 yes Figure 2 The enlarged structure of the middle C area;

[0021] Figure 5 is a cross-sectional view of a display panel provided in some embodiments of the present application;

[0022] Figure 6 It is a schematic diagram of the structure of a display device provided in some embodiments of the present application. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. The described technical solutions are only used to explain and illustrate the ideas of the present application and should not be regarded as limiting the scope of protection of the present application.

[0024] In the description of this application, it should be understood that the terms "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different technical features. The term "plurality" and similar words mean two or more, unless otherwise clearly defined.

[0025] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0026] In this application, the word "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present application.

[0027] The various embodiments of the present application are similar, and features in different embodiments and / or different examples may be combined with each other.

[0028] Some embodiments of the present application provide a display panel, such as Figure 1As shown, the display panel 100 has a light-transmitting area 101, a display area 103, and a transition area 102 located between the light-transmitting area 101 and the display area 103. For example, the transition area 102 can surround the light-transmitting area 101, and the display area 103 surrounds the transition area 102. Among them, the display area 103 is an area where pixels are set, and the screen display of the display panel 100 can be realized by driving the pixel switches. The transition area 102 can provide space for signal routing and winding such as data lines and gate signal lines to ensure signal transmission. No pixels are set in the light-transmitting area 101, so that it has a higher light transmittance. Functional devices including at least one of a camera, a fingerprint recognition element, an infrared sensing element and a handset can be set in the light-transmitting area 101, so that the display device used by the display panel 100 can realize the functions corresponding to the corresponding functional devices.

[0029] like Figures 2 to 4 As shown, the display panel 100 includes a plurality of first data lines 11 and a plurality of second data lines 12 located in the display area 103. The first data line 11 includes two first main body portions 111 disposed opposite to each other, a first connection portion 21 is connected between the two first main body portions 111, and the first connection portion 21 is located in the transition area 102. The second data line 12 includes two second main body portions 121 disposed opposite to each other, a second connection portion 22 is connected between the two second main body portions 121, and the second connection portion 22 is located in the display area 103.

[0030] In this case, since the second connection portion 22 is disposed in the display area 103, the second connection portion 22 is wound from the display area 103 and the second data line 12 is turned on, which can effectively reduce the number of the first data line 11 and the first connection portion 21, thereby reducing the area of ​​the transition area 102 occupied by the first connection portion 21, thereby improving the screen ratio of the display panel 100. In addition, since the first connection portion 21 is located in the transition area 102, the first connection portion 21 is wound in the transition area 102 and used for the conduction of the first data line 11, which can also avoid the excessive number of the second connection portions 22 in the display area 103 affecting the picture display in the area where they are located.

[0031] It is worth noting that after a plurality of second connection parts 22 are provided in the display area 103, the plurality of second connection parts 22 are evenly arranged in the display area 103, so that slits are easily formed and grating diffraction phenomenon is generated, resulting in the display screen of the display panel 100 being affected. For a display panel 100 having a light-transmitting area 101 of the same size, the total amount of the first data lines 11 and the second data lines 12 is certain. Since the first data lines 11 occupy a certain amount, the number of the second data lines 12 is relatively small, and therefore the number of the second connection parts 22 is also relatively small. In this way, by increasing the spacing between adjacent second connection parts 22, on the one hand, slits can be avoided between the second connection parts 22, and on the other hand, signal crosstalk that is easily generated between adjacent second connection parts 22 can be alleviated, thereby improving the display quality of the display panel 100.

[0032] In some examples, the two first main bodies 111 of each first data line 11 are located on the same straight line, and the straight line passes through the transition region 102. Both ends of the first connection portion 21 are respectively connected to the two first main bodies 111, so that the first data line 11 is connected.

[0033] In some examples, the two second main bodies 121 of each second data line 12 are located on the same straight line, and the straight line passes through the transition area 102. Both ends of the second connection portion 22 are respectively connected to the two second main bodies 121, so that the second data line 12 is connected.

[0034] As an example, a plurality of first data lines 11 and a plurality of second data lines 12 may be arranged side by side.

[0035] In some examples, the display panel 100 further includes a plurality of third data lines 13, and the extension direction of the third data lines 13 avoids the transition area 102. That is, the third data lines 13 do not pass through the transition area 102. The first data lines 11, the second data lines 12, and the third data lines 13 can input data signals to pixels in the display area 103 of the display panel 100, thereby driving the display panel 100 to display a picture.

[0036] In some examples, the light-transmitting area 101 may be in a circular, elliptical, rectangular, or rounded rectangular shape, etc. The embodiment of the present application does not limit the shape of the light-transmitting area 101 .

[0037] In some embodiments, Figure 2 As shown, the number of the first data lines 11 is less than or equal to the number of the second data lines 12. This arrangement can make the number of the second connection parts 22 wound in the display area 103 relatively more, and the number of the first connection parts 21 wound in the transition area 102 relatively less, which is beneficial to reduce the screen ratio of the display panel 100.

[0038] As an implementation manner, the number of the first data lines 11 is less than the number of the second data lines 12 .

[0039] As another implementation manner, the number of the first data lines 11 is equal to the number of the second data lines 12 .

[0040] It is worth noting that the relationship between the number of the first data lines 11 and the number of the second data lines 12 can be set according to the size of the light-transmitting area 101. In the case where the light-transmitting area 101 has a smaller size, the total number of the first data lines 11 and the second data lines 12 is relatively small. At this time, more second data lines 12 can be set so that more second connection parts 22 are wound from the display area 103, thereby reducing the area of ​​the transition area 102. In the case where the light-transmitting area 101 has a relatively large size, the total number of the first data lines 11 and the second data lines 12 is relatively large. At this time, if a larger number of second data lines 12 are set, the area occupied by the second data lines 12 will be larger, thereby affecting the picture display in the area where it is located. Therefore, the embodiment of the present application sets the number of the first data lines 11 to be equal to the number of the second data lines 12, thereby effectively reducing the screen ratio of the display panel 100 while ensuring that the display panel 100 has a better picture display effect.

[0041] In some embodiments, Figure 2 and Figure 3 As shown, the second connecting portion 22 includes two first connecting segments 221 extending along the first direction X and a second connecting segment 222 connecting the two first connecting segments 221; the second main body 121 extends along the second direction Y, and the second direction Y intersects the first direction X. For example, the second direction Y and the first direction X are perpendicular to each other.

[0042] The first connection segment 221 and the second main body 121 are respectively located in different film layers of the display panel 100. This arrangement can effectively prevent the first connection segment 221 from short-circuiting with the second main body 121 during the wiring process, thereby ensuring that different second data lines 12 can effectively transmit signals.

[0043] It is worth noting that, since the first connection segment 221 and the second main body 121 are located in different film layers (eg, metal layers), the first connection segment 221 and the second main body 121 may be connected through a via in the insulating layer between the two metal layers.

[0044] In some examples, the extension direction of the second connection segment 222 is consistent with the extension direction of the second main body portion 121 , which is beneficial to the wiring of the second connection segment 222 .

[0045] As an example, for the plurality of second connection segments 222, the length of the second connection segment 222 close to the transition zone 102 is less than the length of the second connection segment 222 away from the transition zone 102. For example, for the plurality of second connection segments 222, the length of the second connection segment 222 gradually increases in a direction away from the transition zone 102. This facilitates wiring of the second connection segment 222, so that the second connection portion 22 can be connected to the corresponding two second main body portions 121.

[0046] In some examples, the length of the first connecting segment 221 connected to the second connecting segment 222 gradually increases in a direction away from the transition zone 102 , which is beneficial to achieve the connection between the first connecting segment 221 and the second connecting segment 222 .

[0047] In some embodiments, the display panel 100 includes a plurality of third data lines 13 extending in a direction avoiding the transition region 102 , and the third data lines 13 and the second connecting segments 222 are respectively located in different film layers of the display panel 100 .

[0048] The third data line 13 and the second connection segment 222 extend in substantially the same direction. By disposing the third data line 13 and the second connection segment 222 in different film layers, it is helpful to reduce the coupling capacitance formed between adjacent lines in the same film layer, thereby helping to improve the crosstalk problem between the above lines, thereby improving the display effect of the display panel 100.

[0049] In some examples, the second connecting segment 222 and the first connecting segment 221 may be located in the same film layer or in different film layers, which is not limited in the embodiments of the present application.

[0050] In some embodiments, Figure 2 and Figure 3 As shown, the plurality of second connection portions 22 are located on both sides of the light-transmitting area 101, and the plurality of second connection portions 22 are symmetrical about an axis P of the display panel 100 passing through the geometric center of the light-transmitting area 101. That is, each second connection portion 22 located on one side of the light-transmitting area 101 is symmetrical about the axis P with a corresponding second connection portion 22 located on the other side of the light-transmitting area 101.

[0051] This arrangement can effectively utilize the space on both sides of the light-transmitting area 101 for wiring the second connection parts 22. Since the plurality of second connection parts 22 are symmetrical about the axis P, this can also improve the uniformity of the arrangement of the second connection parts 22, thereby improving the display effect of the display panel 100.

[0052] In some embodiments, Figure 2As shown, the plurality of second data lines 12 are arranged side by side and include a first data line group 141 located in the first area and a second data line group 142 located in the second area, and the plurality of first data lines 11 are located between the first area and the second area.

[0053] Such an arrangement enables a plurality of first data lines 11 to be centrally arranged in one area, which is beneficial to the arrangement of the first connection parts 21 for realizing data transmission of the first data lines 11 .

[0054] In some examples, the plurality of first connection portions 21 are located on both sides of the light-transmitting area 101, and the plurality of first connection portions 21 are symmetrical about the axis P of the display panel 100. That is, each first connection portion 21 located on one side of the light-transmitting area 101 is symmetrical about the axis P with a corresponding first connection portion 21 located on the other side of the light-transmitting area 101. With such an arrangement, the space located on both sides of the light-transmitting area 101 in the transition area 102 can be effectively utilized for the wiring of the first connection portions 21. Since the plurality of first connection portions 21 are symmetrical about the axis P, the uniformity of the arrangement of the first connection portions 21 can be improved, thereby improving the display effect of the display panel 100.

[0055] In some examples, the first data line group 141 and the second data line group 142 are symmetrical about the axis P; the multiple first data lines 11 include a third data line group 143 and a fourth data line group 144, the third data line group 143 and the fourth data line group 144 are symmetrical about the axis P, and the number of first data lines 11 in the third data line group 143 is equal to the number of second data lines 12 in the first data line group 141.

[0056] As an example, the number of the second data lines 12 in the first data line group 141, the number of the second data lines 12 in the second data line group 142, the number of the first data lines 11 in the third data line group 143, and the number of the first data lines 11 in the fourth data line group 144 can be equal, so that the total number of the first data lines 11 is equal to the total number of the second data lines 12. In this way, the screen-to-body ratio of the display panel 100 is effectively reduced while ensuring that the display panel 100 has a better picture display effect.

[0057] In some embodiments, the first connection portion 21 and the first main body portion 111 are respectively located in different film layers of the display panel 100 .

[0058] Since the lengths of the first main body 111 at different positions are different, the resistance values ​​of different first data lines 11 are different, which easily leads to abnormal images of the display panel. By arranging the first main body 111 and the first connecting portion 21 in different film layers, the first main body 111 and the first connecting portion 21 can be made of different materials, which is conducive to ensuring that the resistance values ​​of the first data lines 11 are substantially the same, thereby improving the display effect of the display panel 100.

[0059] In some examples, the plurality of first connection portions 21 may be located in a plurality of film layers, so that the spacing between the first connection portions 21 can be increased, thereby reducing the coupling capacitance formed between adjacent first connection portions 21 in the same film layer. In addition, since the plurality of first connection portions 21 are located in a plurality of film layers, this is also beneficial in reducing the area of ​​the transition region 102 occupied by the first connection portions 21, thereby increasing the screen-to-body ratio of the display panel 100.

[0060] In some examples, the first connection portion 21 and the second connection portion 22 are located in the same film layer of the display panel 100 .

[0061] This arrangement can avoid the first connection portion 21 and the second connection portion 22 being located in different film layers, thereby preventing the number of film layers in the display panel 100 from increasing, thereby reducing the thickness of the display panel 100 and lowering the manufacturing cost of the display panel 100 .

[0062] It should be noted that, when the plurality of first connection portions 21 are located in a plurality of film layers, and the second connection portions 22 are located in a plurality of film layers, the film layer used to arrange the first connection portions 21 is also used to arrange the second connection portions 22. In this way, the existing film layer can be effectively used to arrange the first connection portions 21 and the second connection portions 22, thereby reducing the thickness of the display panel 100 and reducing the manufacturing cost of the display panel 100.

[0063] In order to better explain the positions of the first main body 111 and the second main body 121 in the embodiment of the present application, the following is combined with Figure 5 The film layers of the display panel 100 are described.

[0064] like Figure 5As shown, the display panel 100 includes: a first base substrate 1011, a first buffer layer 1012, a second base substrate 1013, a second buffer layer 1014, an active layer 1015, a first gate insulating layer 1016, a first gate layer 1017, a second gate insulating layer 1018, a second gate layer 1019, an interlayer insulating layer 1020, a first source and drain layer 1021, a first flat layer 1022, a first metal layer 1023, a second flat layer 1024, a second metal layer 1025, a third flat layer 1026, an anode layer 1027, and a pixel definition layer 1028, wherein the pixel definition layer 1028 has a plurality of openings for accommodating a light-emitting layer, and a cathode layer is provided on the side of the light-emitting layer away from the anode layer 1027. An encapsulation layer may be further provided on the side of the cathode layer away from the light-emitting layer, and the encapsulation layer may seal the light-emitting element composed of the anode layer 1027, the light-emitting layer, and the cathode layer to prevent external moisture and oxygen from penetrating into the light-emitting element and the driving circuit for driving the light-emitting element and causing damage to the device. For example, the encapsulation layer may include an organic film or a structure including an organic film and an inorganic film alternately stacked.

[0065] In some examples, the first body portion 111 , the second body portion 121 , and the third data line 13 may be located within the first metal layer 1023 .

[0066] In some examples, the first connection segment 221 in the second connection portion 22 may be located in the second metal layer 1025, and the second connection segment 222 may be located in the first metal layer 1023, the second metal layer 1025 or other metal layers, which is not limited in this embodiment of the present application.

[0067] In some examples, the gate signal line connected to the pixel may include a connection line located in the transition region 102, thereby implementing the winding of the gate signal line. The connection line may be located in the first gate layer 1017 or the second gate layer 1019, which is not limited in the present embodiment.

[0068] In some embodiments, Figure 2 As shown, the display panel 100 further includes a virtual electrode 31, and the virtual electrode 31 does not carry an electrical signal. As an example, the virtual electrode 31 is at least partially arranged around the light-transmitting area 101 and is closest to the light-transmitting area 101 compared to other wirings, that is, no wiring is arranged on the side of the virtual electrode 31 close to the light-transmitting area 101. The virtual electrode 31 can shield the interference of the photoelectric signal in the light-transmitting area 101 with the electrical signal on the signal line in the display area 103 and the transition area 102.

[0069] In some examples, the light-transmitting area 101 is configured to allow light from the display side of the display substrate to be transmitted to the opposite side of the display side for sensing, for example, the light is visible light or infrared light. The virtual electrode 31 can shield the light passing through the light-transmitting area 101 from interfering with the electrical signal outside the virtual electrode. As an example, the virtual electrode 31 can be annular and surround the light-transmitting area 101.

[0070] In some examples, the virtual electrode 31 and the third data line 13 are located in the same film layer, which can shorten the distance between the virtual electrode 31 and the third data line 13 and protect the data signal in the third data line 13 from interference. In other examples, the virtual electrode 31 can also be located in other film layers of the display panel 100.

[0071] Some embodiments of the present application also provide a display device, such as Figure 6 As shown, the display device 200 includes the display panel 100 described in any one of the above embodiments.

[0072] Since the display device 200 includes the display panel 100 , the display device 200 has the technical effects of the display panel 100 , which will not be described in detail here.

[0073] In some examples, the display device further includes a sensor 201. For example, the sensor 201 is disposed corresponding to the light-transmitting area 101 of the display panel 100 and is disposed on the backlight side (the other side opposite to the display side) of the display panel 100. The sensor 201 is, for example, a photoelectric sensor, and the sensor 201 is configured to receive light from the display side of the display panel 100 and convert the light into an electrical signal for forming an image. For example, the light reaches the sensor 201 from the display side through the light-transmitting area 101.

[0074] In some examples, the display device 200 further includes a cover plate disposed on the display panel 100 . The cover plate is made of, for example, glass material to effectively protect the display panel 100 .

[0075] In some examples, the display device 200 may be a digital photo frame, a smart bracelet, a smart watch, a mobile phone, a tablet computer, a display, a laptop computer, a navigator, or other product or component with any display function.

[0076] The embodiments of the present application are introduced in detail above. Specific examples are used in this article 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 and core idea of ​​the present application. 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 method 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: The display panel has a light-transmitting area, a display area, and a transition area between the light-transmitting area and the display area, and includes: a plurality of first data lines located in the display area, the first data lines comprising two first main body portions arranged opposite to each other, a first connecting portion connected between the two first main body portions, and the first connecting portion being located in the transition area; and A plurality of second data lines are located in the display area, wherein the second data lines include two second main body portions that are arranged opposite to each other, a second connecting portion is connected between the two second main body portions, and the second connecting portion is located in the display area.

2. The display panel according to claim 1, characterized in that: The number of the first data lines is less than or equal to the number of the second data lines.

3. The display panel according to claim 1, characterized in that: The second connecting portion includes two first connecting segments extending along a first direction and a second connecting segment connecting the two first connecting segments; the second main body portion extends along a second direction, and the second direction intersects with the first direction; the first connecting segment and the second main body portion are respectively located in different film layers of the display panel.

4. The display panel according to claim 3, characterized in that: The display panel further includes a plurality of third data lines located in the display area. The extension direction of the third data lines avoids the transition area. The third data lines and the second connecting segments are respectively located in different film layers of the display panel.

5. The display panel according to any one of claims 1 to 4, characterized in that: The plurality of second connection portions are located on both sides of the light-transmitting area and are symmetrical with respect to an axis of the display panel passing through a geometric center of the light-transmitting area.

6. The display panel according to any one of claims 1 to 4, characterized in that: The plurality of second data lines are arranged side by side and include a first data line group located in the first area and a second data line group located in the second area. The plurality of first data lines are located between the first area and the second area.

7. The display panel according to claim 6, characterized in that: The first data line group and the second data line group are symmetrical about an axis of the display panel passing through the geometric center of the light-transmitting area; the plurality of first data lines include a third data line group and a fourth data line group, the third data line group and the fourth data line group are symmetrical about the axis, and the number of the first data lines in the third data line group is equal to the number of the second data lines in the first data line group.

8. The display panel according to any one of claims 1 to 4, characterized in that: The first connecting portion and the first main body are respectively located in different film layers of the display panel.

9. The display panel according to claim 8, characterized in that: The first connection portion and the second connection portion are located in a same film layer of the display panel.

10. A display device, characterized in that: include: A display panel as claimed in any one of claims 1 to 9.

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