Display panel and display device

Abstract

The application relates to the technical field of display, and discloses a display panel and a display device, the display panel comprising: a touch area and a non-touch area surrounding the touch area; the touch area comprising a plurality of first touch electrodes extending along a first direction and a plurality of second touch electrodes extending along a second direction, the first touch electrodes comprising a plurality of first touch electrode blocks, the first touch electrode blocks being electrically connected through body connecting parts, the second touch electrodes comprising a plurality of second touch electrode blocks, adjacent second touch electrode blocks being electrically connected through functional bridges, and the body connecting parts being located between the adjacent second touch electrode blocks, and the functional bridges crossing the body connecting parts, wherein the first direction and the second direction intersect; the non-touch area comprising an electrostatic discharge module, the electrostatic discharge module comprising a first conductive part and a plurality of virtual bridges electrically connected with the first conductive part. The application is beneficial to improving the yield of the display panel.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more specifically, to a display panel and a display device. Background Technology

[0002] With the continuous development of display technology, consumers' demands for display panels are constantly increasing. Various types of display panels have emerged and developed rapidly, such as liquid crystal display panels and organic light-emitting diode (OLED) display panels. Based on this, display technologies such as 3D display, touch display technology, curved display, ultra-high resolution display, and privacy-protected display are constantly emerging to meet consumer needs. Touch functionality is now essentially an essential feature of displays, and its implementation and structure are diverse, including self-capacitive and mutual-capacitive touch methods, and built-in, external, or add-on touch structures.

[0003] During the manufacturing process of touch panels, the presence of static electricity can cause conductors to discharge into each other, damaging the touch panel. Existing touch display panels include functional bridges between the touch electrodes; these bridges are easily damaged by electrostatic discharge, leading to touch panel failure and significantly impacting the yield rate. Summary of the Invention

[0004] In view of this, the present invention provides a display panel and a display device, which is beneficial to improving the yield of the display panel.

[0005] The present invention provides a display panel, comprising: a touch area and a non-touch area surrounding the touch area; the touch area includes a plurality of first touch electrodes extending along a first direction and a plurality of second touch electrodes extending along a second direction, the first touch electrodes including a plurality of first touch electrode blocks electrically connected through a body connecting portion, the second touch electrodes including a plurality of second touch electrode blocks, adjacent second touch electrode blocks electrically connected through a functional bridge, and the body connecting portion being located between adjacent second touch electrode blocks, the functional bridge spanning the body connecting portion, wherein the first direction and the second direction intersect; the non-touch area includes an electrostatic discharge module, the electrostatic discharge module including a first conductive portion and a plurality of dummy bridges electrically connected to the first conductive portion.

[0006] Based on the same idea, the present invention also provides a display device, including the display panel provided by the present invention.

[0007] Compared with the prior art, the display panel and display device provided by the present invention achieve at least the following beneficial effects:

[0008] The display panel provided by this invention includes an electrostatic discharge module in the non-touch area. The electrostatic discharge module comprises a first conductive part and multiple dummy bridges electrically connected to the first conductive part. Specifically, the electrostatic discharge module is located within the non-touch area, and these dummy bridges can be used to release static electricity. The static electricity can be further released through the first conductive part, which is electrically connected to the dummy bridges. This reduces the risk of damage to functional bridges and other components in the touch area, thus improving the yield rate of the display panel. Furthermore, because the dummy bridges and the first conductive part are electrically connected, the impedance of the electrostatic discharge module is reduced, making it easier for the module to attract static electricity, further reducing the risk of damage to functional bridges and other components in the touch area. Simultaneously, the electrostatic discharge module is located within the non-touch area, so its placement does not affect the placement of components within the touch area.

[0009] Of course, any product implementing this invention need not necessarily achieve all of the technical effects described above at the same time.

[0010] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0011] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0012] Figure 1 This is a plan view of a display panel provided by the present invention;

[0013] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the aforementioned display panel;

[0014] Figure 3 This is a plan view of an electrostatic discharge module provided by the present invention;

[0015] Figure 4 This is a plan view of another display panel provided by the present invention;

[0016] Figure 5 This is a plan view of another electrostatic discharge module provided by the present invention;

[0017] Figure 6 yes Figure 3 A cross-sectional view of the electrostatic discharge module along line A-A';

[0018] Figure 7 This is a plan view of another electrostatic discharge module provided by the present invention;

[0019] Figure 8 yes Figure 7 A cross-sectional view of the electrostatic discharge module along B-B';

[0020] Figure 9 This is a plan view of another electrostatic discharge module provided by the present invention;

[0021] Figure 10 This is a plan view of another display panel provided by the present invention;

[0022] Figure 11 yes Figure 10 A cross-sectional view of the display panel along C-C';

[0023] Figure 12 This is a plan view of another display panel provided by the present invention;

[0024] Figure 13 This is a plan view of a display device provided by the present invention. Detailed Implementation

[0025] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0026] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0027] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0028] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0030] Figure 1 This is a plan view of a display panel provided by the present invention. Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the aforementioned display panel. Figure 3 This is a plan view of an electrostatic discharge module provided by the present invention, for reference. Figures 1-3This embodiment provides a display panel, which includes a touch area Q and a non-touch area NQ surrounding the touch area Q.

[0031] The touch area Q includes multiple first touch electrodes 10 extending along a first direction X and second touch electrodes 20 extending along a second direction Y. The first touch electrodes 10 extend along the first direction X and include multiple first touch electrode blocks 11 arranged along the first direction X. Adjacent first touch electrode blocks 11 are electrically connected via a body connection portion 12, thus the first touch electrodes 10 extend along the first direction X and are arranged along the second direction Y. The second touch electrodes 20 include multiple second touch electrode blocks 21, and adjacent second touch electrode blocks 21 are electrically connected via a functional bridge 22, thus the second touch electrodes 20 extend along the second direction Y and are arranged along the first direction X. The first direction X and the second direction Y intersect. Optionally, the first direction X and the second direction Y are perpendicular. The body connection portion 12 is located between adjacent second touch electrode blocks 21, and the functional bridge 22 spans the body connection portion 12, so that the first touch electrode 10 and the second touch electrode 20 are insulated from each other, and the intersecting first touch electrode 10 and the second touch electrode 20 can achieve mutual capacitive touch detection.

[0032] During reliability testing or actual use, static electricity may exist on the display panel. Due to the low resistance and narrow width of the functional bridge 22, it is easily damaged by electrostatic discharge. When the functional bridge 22 is damaged by electrostatic discharge, its resistance will increase, resulting in decreased touch accuracy or touch failure. If the functional bridge 22 is broken by electrostatic discharge, it will cause the second touch electrode blocks 21 in the second touch electrode 20 to disconnect, resulting in a broken touch and touch failure.

[0033] In the display panel provided in this embodiment, the non-touch area NQ includes an electrostatic discharge module 30. The electrostatic discharge module 30 includes a first conductive part 31 and multiple dummy bridges 32 electrically connected to the first conductive part 31. That is, the electrostatic discharge module 30 is disposed within the non-touch area NQ, and the electrostatic discharge module 30 contains multiple dummy bridges 32. The dummy bridges 32 can be used to release static electricity, and the static electricity can be further released through the first conductive part 31 electrically connected to the dummy bridges 32. This reduces the risk of damage to the functional bridges 22 and other components in the touch area Q, which is beneficial to improving the yield of the display panel. Furthermore, since the dummy bridges 32 and the first conductive part 31 are electrically connected, the impedance of the electrostatic discharge module 30 is reduced, making it easier for the electrostatic discharge module 30 to attract static electricity, further reducing the risk of damage to the functional bridges 22 and other components in the touch area Q. Simultaneously, the electrostatic discharge module 30 is disposed within the non-touch area NQ, so its placement does not affect the placement of the components in the touch area Q.

[0034] It should be noted that, Figure 1 An exemplary embodiment shows one placement of the electrostatic discharge module 30 in the non-touch area NQ. The electrostatic discharge module 30 is rectangular. In other embodiments of the present invention, the electrostatic discharge module 30 may also be placed in other positions in the non-touch area NQ, and the electrostatic discharge module 30 may also be other shapes. These will not be described in detail here.

[0035] Optionally, the attraction of the electrostatic discharge module 30 to static electricity can be increased by increasing the unit density of the dummy bridges 32 within the electrostatic discharge module 30, thereby further reducing the risk of damage to the functional bridges 22 and other components within the touch area Q.

[0036] Figure 4 This is a plan view of another display panel provided by the present invention. Figure 5 This is a plan view of another electrostatic discharge module provided by the present invention, for reference. Figure 4 and Figure 5 In some optional embodiments, the display panel is an irregularly shaped display panel. The non-touch area NQ in the display panel includes at least one irregularly shaped area NQ1 and a bonding area NQ2. The bonding area NQ2 is bonded with multiple pads 40. The irregularly shaped area NQ1 is located on one side of the bonding area NQ2 along a first direction X. The irregularly shaped area NQ1 includes an irregularly shaped edge S1 located on the side of the irregularly shaped area NQ1 closest to the touch area NQ2. The extension direction of the irregularly shaped edge S1 intersects both the first direction X and the second direction Y. That is, the irregularly shaped area NQ1 is located on one side of the bonding area NQ2 along the first direction X, meaning the irregularly shaped area NQ1 is located in the corner area of ​​the display panel on the side closest to the bonding area NQ2. Typically, a portion of the corner area of ​​the display panel on the side closest to the bonding area NQ2 is not provided with traces.

[0037] The electrostatic discharge module 30 is located in the irregular area NQ1. Since there are some areas in the irregular area NQ1 where no wiring is installed, this area of ​​the irregular area NQ1 can be used to install the electrostatic discharge module 30, which is beneficial to achieving a narrow bezel. Moreover, the installation of the electrostatic discharge module 30 will not affect the installation of other components in the display panel.

[0038] It should be noted that when the electrostatic discharge module 30 is set in the irregular region NQ1, the shape of the electrostatic discharge module 30 can match the shape of the irregular region NQ1. Figure 4 The electrostatic discharge module 30 is shown to have a triangular shape as an example. In other embodiments of the present invention, the electrostatic discharge module 30 may also adopt other shapes, which will not be described in detail here.

[0039] It should be noted that, Figure 4The example shown is an irregularly shaped display panel where the irregular edge S1 is an arc-shaped edge. In other embodiments of the present invention, the irregular edge S1 can also be a straight edge, a broken line edge, or other irregularly shaped edges. Figure 4 The exemplary display panel shows irregularly shaped edges S1 distributed at the four corners of the panel, all of which are curved boundaries. Of course, in other embodiments of the present invention, the irregularly shaped edges S1 in the display panel may take other forms, and this application does not impose specific limitations on them. Furthermore, the number of irregularly shaped edges S1 in the display panel provided by the present invention is not specifically limited.

[0040] Figure 6 yes Figure 3 A cross-sectional view of the electrostatic discharge module along line A-A', for reference. Figures 1-3 and Figure 6 In some alternative embodiments, the first conductive part 31 and the dummy bridge 32 are in direct contact. This direct contact between the first conductive part 31 and the dummy bridge 32 enables electrical connection between them, reducing the impedance of the electrostatic discharge module 30. This makes the electrostatic discharge module 30 more likely to attract static electricity, thus reducing the risk of damage to the functional bridge 22 and other components within the touch area Q.

[0041] Meanwhile, since the first conductive part 31 and the dummy bridge 32 are in direct contact, the electrical connection between the first conductive part 31 and the dummy bridge 32 is simple, which is conducive to increasing the unit density of the dummy bridge 32 in the electrostatic discharge module 30. Thus, by increasing the unit density of the dummy bridge 32 in the electrostatic discharge module 30, the attraction of the electrostatic discharge module 30 to static electricity can be increased.

[0042] Optionally, the spacing between adjacent dummy bridges 32 within the electrostatic discharge module 30 can be set with reference to the spacing between pixels in the display panel. This can increase the unit density of dummy bridges 32 within the electrostatic discharge module 30, while avoiding the increased manufacturing difficulty due to small spacing between adjacent dummy bridges 32 within the electrostatic discharge module 30.

[0043] Figure 7 This is a plan view of another electrostatic discharge module provided by the present invention. Figure 8 yes Figure 7 A cross-sectional view of the electrostatic discharge module along B-B', see reference. Figure 1 , Figure 2 , Figure 7 and Figure 8In some alternative embodiments, the first conductive part 31 and the dummy bridge 32 are connected through a via 50. That is, the first conductive part 31 and the dummy bridge 32 can be electrically connected through the via 50, which can reduce the impedance of the electrostatic discharge module 30, making it easier for the electrostatic discharge module 30 to attract static electricity, thereby reducing the risk of damage to the functional bridge 22 and other components in the touch area Q.

[0044] Meanwhile, due to the setting of the via 50, electrostatic coupling occurs in the part of the first conductive part 31 located between the vias 50, which makes it easy for this part to attract static electricity. Thus, the first conductive part 31 and the dummy bridge 32 are connected through the via 50, effectively reducing the risk of damage to the functional bridge 22 and other components in the touch area Q.

[0045] Optionally, each dummy bridge 32 and the first conductive part 31 are connected by at least two vias 50, so that the area between the vias 50 corresponding to a dummy bridge 32 in the first conductive part 31 is narrow. This part has electrostatic coupling, so this part can easily attract static electricity, effectively reducing the risk of damage to the functional bridge 22 and other components in the touch area Q.

[0046] It should be noted that, Figure 7 The example shows that each dummy bridge 32 and the first conductive part 31 are connected by two vias 50. In other embodiments of the present invention, the dummy bridge 32 and the first conductive part 31 can also be connected by other numbers of vias 50, and each dummy bridge 32 and the first conductive part 31 can also be connected by different numbers of vias 50. These will not be described in detail here.

[0047] refer to Figure 1 , Figure 2 , Figure 7 and Figure 8 In some optional embodiments, the dummy bridge 32 and the functional bridge 22 are arranged on the same layer, that is, the dummy bridge 32 in the electrostatic discharge module 30 can be arranged on the same layer as the functional bridge 22 in the touch area Q, that is, the dummy bridge 32 and the functional bridge 22 are made of the same material. Since the functional bridge 22 easily attracts static electricity, the corresponding dummy bridge 32 also easily attracts static electricity. Optionally, the materials of the dummy bridge 32 and the functional bridge 22 are metallic materials.

[0048] It should be noted that in other embodiments of the present invention, the dummy bridge 32 may also be made of a material that is more likely to attract static electricity than the functional bridge 22, thereby making the static discharge module 30 more likely to attract static electricity and reducing the risk of damage to the functional bridge 22 and other components in the touch area Q.

[0049] Figure 9 This is a plan view of another electrostatic discharge module provided by the present invention, for reference. Figure 1 , Figure 2 and Figure 9 In some optional embodiments, the dummy bridge 32 and the functional bridge 22 are arranged in the same way, that is, the dummy bridge 32 and the functional bridge 22 can be made of the same material in the same mask process, which effectively reduces the process and production costs.

[0050] Figure 10 This is a plan view of another display panel provided by the present invention, for reference. Figure 5 and Figure 10 In some alternative embodiments, the non-touch area NQ also includes a ground signal line GND, which at least partially surrounds the touch area Q.

[0051] The non-touch area NQ also includes a package structure 60, which is located on the side of the ground signal line GND away from the touch area Q and surrounds the touch area Q.

[0052] The ground signal line GND is the outermost trace of the non-touch area NQ, and the package structure 60 is the outermost structure of the non-touch area NQ, which can prevent external moisture from entering the display panel. At least part of the electrostatic discharge module 30 is located between the ground signal line GND and the package structure 60, so the setting of the electrostatic discharge module 30 will not affect the arrangement of traces in the non-touch area NQ.

[0053] It should be noted that when the unit density of the dummy bridges 32 in the electrostatic discharge module 30 is low, the electrostatic discharge module 30 can partially overlap with the encapsulation structure 60 along the direction perpendicular to the plane of the display panel. That is, part of the electrostatic discharge module 30 can be placed within the area of ​​the encapsulation structure 60, thereby increasing the installation area of ​​the electrostatic discharge module 30. When the unit density of the dummy bridges 32 in the electrostatic discharge module 30 is high, the electrostatic discharge module 30 and the encapsulation structure 60 do not overlap along the direction perpendicular to the plane of the display panel. This avoids the electrostatic discharge module 30's placement affecting the curing effect of the encapsulation structure 60 and thus affecting the sealing performance.

[0054] Figure 11 yes Figure 10 A cross-sectional view of the display panel along C-C', see reference. Figure 5 , Figure 10 and Figure 11In some optional embodiments, the first conductive part 31 is electrically connected to the ground signal line GND. Thus, when electrostatic discharge (ESD) is transmitted to the dummy bridge 32 in the ESD release module 30, the ESD can be transmitted to the first conductive part 31, which is electrically connected to the dummy bridge 32. Furthermore, the ESD can be released through the ground signal line GND, which is electrically connected to the first conductive part 31. This prevents functional bridges and other components within the display panel from being damaged by ESD, thus improving the yield rate of the display panel. Moreover, the ground signal line GND is the outermost trace of the non-touch area NQ. Releasing ESD through the ground signal line GND reduces the risk of damage to functional bridges and other components within the touch area Q.

[0055] Continue to refer to Figure 5 , Figure 10 and Figure 11 In some alternative embodiments, the ground signal line GND includes a first metal part 71 and a second conductive part 72 connected in parallel. The first conductive part 71 and the second conductive part 72 are disposed on the same layer and are connected to each other.

[0056] Specifically, the ground signal line GND includes a first metal part 71 and a second conductive part 72 connected in parallel, which can reduce the impedance of the ground signal line GND, thereby making it easier to attract static electricity from the ground signal line GND and reduce the risk of damage to the functional bridge and other components in the touch area Q.

[0057] Since the grounding signal line GND includes a first metal part 71 and a second conductive part 72 connected in parallel, the first conductive part 31 and the second conductive part 72 can be disposed on the same layer and connected to each other, thereby achieving an electrical connection between the first conductive part 31 and the grounding signal line GND. Simultaneously, the first conductive part 31 and the second conductive part 72 can be manufactured using the same material and in the same process, which helps to reduce the number of manufacturing processes and lower production costs.

[0058] Figure 12 This is a plan view of another display panel provided by the present invention, for reference. Figure 5 and Figure 12 In some alternative embodiments, the display panel includes a plurality of pads 40, and the pads 40 include dummy pads 41.

[0059] The first conductive part 31 is insulated from the ground signal line GND, and the first conductive part 31 is electrically connected to the dummy pad 41.

[0060] Specifically, the first conductive part 31 is insulated from the ground signal line GND, and the first conductive part 31 is electrically connected to the dummy pad 41. Thus, a low potential signal can be transmitted to the first conductive part 31 through the dummy pad 41, so that static electricity can be transmitted to the first conductive part 31 for release. This can prevent functional bridges and other components in the display panel from being damaged by static electricity, which is beneficial to improving the yield of the display panel.

[0061] In some alternative embodiments, please refer to Figure 13 , Figure 13 This is a plan view of a display device provided by the present invention. The display device 1000 provided in this embodiment includes the display panel 100 provided in the above embodiment of the present invention. Figure 13 This embodiment uses a mobile phone as an example to illustrate the display device 1000. It is understood that the display device 1000 provided in this embodiment can also be other display devices 1000 with display functions, such as computers, televisions, and in-vehicle display devices. This invention does not impose specific limitations on these. The display device 1000 provided in this embodiment has the beneficial effects of the display panel 100 provided in this embodiment. For details, please refer to the specific descriptions of the display panel 100 in the above embodiments; these will not be repeated here.

[0062] As can be seen from the above embodiments, the display panel and display device provided by the present invention achieve at least the following beneficial effects:

[0063] The display panel provided by this invention includes an electrostatic discharge module in the non-touch area. The electrostatic discharge module comprises a first conductive part and multiple dummy bridges electrically connected to the first conductive part. Specifically, the electrostatic discharge module is located within the non-touch area, and these dummy bridges can be used to release static electricity. The static electricity can be further released through the first conductive part, which is electrically connected to the dummy bridges. This reduces the risk of damage to functional bridges and other components in the touch area, thus improving the yield rate of the display panel. Furthermore, because the dummy bridges and the first conductive part are electrically connected, the impedance of the electrostatic discharge module is reduced, making it easier for the module to attract static electricity, further reducing the risk of damage to functional bridges and other components in the touch area. Simultaneously, the electrostatic discharge module is located within the non-touch area, so its placement does not affect the placement of components within the touch area.

[0064] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A display panel, characterized in that, include: The touch area and the non-touch area surrounding the touch area; The touch area includes a plurality of first touch electrodes extending along a first direction and a second touch electrode extending along a second direction. The first touch electrode includes a plurality of first touch electrode blocks, which are electrically connected through a body connecting portion. The second touch electrode includes a plurality of second touch electrode blocks, which are electrically connected through a functional bridge. The body connecting portion is located between adjacent second touch electrode blocks, and the functional bridge spans the body connecting portion. The first direction and the second direction intersect. The non-touch area includes an electrostatic discharge module, which includes a first conductive part and multiple dummy bridges electrically connected to the first conductive part. The non-touch area also includes a ground signal line, which at least partially surrounds the touch area; The non-touch area also includes an encapsulation structure, which is located on the side of the ground signal line away from the touch area and surrounds the touch area; At least a portion of the electrostatic discharge module is located between the grounding signal line and the encapsulation structure; When the unit density of the dummy bridge in the electrostatic discharge module is small, the electrostatic discharge module partially overlaps with the encapsulation structure along the direction perpendicular to the plane of the display panel; or, when the unit density of the dummy bridge in the electrostatic discharge module is large, the electrostatic discharge module does not overlap with the encapsulation structure along the direction perpendicular to the plane of the display panel.

2. The display panel according to claim 1, characterized in that, The first conductive part and the dummy bridge are in direct contact.

3. The display panel according to claim 1, characterized in that, The first conductive part and the dummy bridge are connected by a via.

4. The display panel according to claim 1, characterized in that, The virtual bridge is set on the same level as the functional bridge.

5. The display panel according to claim 4, characterized in that, The arrangement of the virtual bridge is the same as that of the functional bridge.

6. The display panel according to claim 1, characterized in that, The first conductive part is electrically connected to the ground signal line.

7. The display panel according to claim 6, characterized in that, The grounding signal line includes a first metal part and a second conductive part connected in parallel. The first conductive part and the second conductive part are disposed on the same layer and are connected to each other.

8. The display panel according to claim 1, characterized in that, The display panel includes multiple pads, including dummy pads; The first conductive part is insulated from the grounding signal line, and the first conductive part is electrically connected to the dummy pad.

9. The display panel according to claim 1, characterized in that, The non-touch area includes at least one irregularly shaped area and a binding area. The irregularly shaped area is located on one side of the binding area along the first direction. The irregularly shaped area includes an irregularly shaped edge, which is located on the side of the irregularly shaped area closer to the touch area. The extension direction of the irregularly shaped edge intersects both the first direction and the second direction. The bonding area is bonded to multiple pads; The electrostatic discharge module is located in the irregular area.

10. A display device, characterized in that, The display device includes the display panel as described in any one of claims 1-9.

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