CN116648109A - Display panel and display device - Google Patents

Abstract

The invention relates to a display panel and a display device, wherein the display panel comprises a display area and a non-display area surrounding the display area, and the non-display area comprises a first frame area, a second frame area and a bending area; the first frame area and the second frame area are positioned at different sides of the display area; the bending area is positioned at one side of the second frame area far away from the display area; the display panel comprises a display substrate and a touch control layer, and the touch control layer is arranged on one side of the display substrate along the thickness direction of the display substrate; the touch layer comprises a first touch electrode, a first touch wire and a first terminal area; the first terminal area is positioned in the first frame area and comprises a first line changing hole; according to the display panel provided by the invention, at least a part of the touch terminal area is arranged in the first frame area, so that the display panel provided by the invention is beneficial to the size reduction of the second frame area, and meanwhile, the disconnection risk of the first touch lead can be reduced, and the realization of a narrower bending area W1 is facilitated.

Description

Display panel and display device

Technical Field

The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.

Background

Along with development of display technology, requirements of users on display equipment are higher and higher, display effects of display devices are improved continuously, display screen sizes are larger and larger, and high-screen-ratio display devices are favored by users. The high-screen-ratio display device not only has good appearance, but also has higher screen utilization rate, can display more screen contents, brings great impact to the vision of a user, and greatly improves the user experience effect.

The display panel generally includes a display area and a non-display area, the non-display area mainly includes a frame area surrounding the display area, and the smaller the area of the frame area is, the larger the screen occupation ratio is, so that the requirement of users for a narrow frame is higher.

Disclosure of Invention

In view of this, the present invention provides a display panel and a display device, which aim to further reduce the area of the frame area of the display panel, thereby being beneficial to improving the overall display quality of the product.

The technical scheme of the invention is as follows:

in a first aspect, the present invention provides a display panel, including a display area and a non-display area surrounding the display area, wherein the non-display area includes a first frame area, a second frame area, and a bending area; the first frame area and the second frame area are positioned on different sides of the display area; the bending area is positioned at one side of the second frame area away from the display area;

The display panel comprises a display substrate and a touch layer, and the touch layer is arranged on one side of the display substrate along the thickness direction of the display substrate;

the display substrate comprises a first touch lead and a second touch lead, and the second touch lead is positioned in the bending area;

the touch layer comprises a first touch electrode, a first touch wire and a first terminal area; the first terminal area is located in the first frame area and comprises a first line changing hole;

one end of the first touch control wire is connected with the first touch control electrode, the other end of the first touch control wire is connected with one end of a first touch control lead wire positioned on the display substrate through the first wire changing hole, and the other end of the first touch control lead wire is connected with a second touch control lead wire of the bending area.

In a second aspect, the present invention also provides a display device, including the display panel according to the above-mentioned invention.

Compared with the related art, the display panel and the display device provided by the invention have the advantages that at least the following effects are realized:

according to the display panel provided by the invention, the traditional arrangement mode of the touch terminal area is broken, at least a part of the touch terminal area is arranged in the first frame area, so that the number of line replacement holes in the second frame area is reduced or even no line replacement holes are arranged; the reduction of the number of line changing holes in the second frame region may bring convenience in several aspects, on the one hand, the reduction of the number of line changing holes may reduce the width of the second frame region along the first direction X; on the other hand, as the number of the line changing holes in the second frame area is reduced, the space is saved, and the width or the line distance of the first touch lead can be properly increased by utilizing the partial space, so that the line breakage risk of the first touch lead is reduced; in the third aspect, the number of the line changing holes in the second frame area is reduced, and space is released, so that when the first touch leads and the second touch leads are connected in one-to-one correspondence, the dislocation degree in the first direction X is reduced, the matching of the first touch leads and the second touch leads is facilitated, and meanwhile, the shortening of the distance of the second frame area in the Y direction and the realization of a narrower bending area are facilitated; the display panel provided by the invention can reduce the width of the second frame area in the first direction and the second direction, thereby reducing the area of the frame area of the display panel, being beneficial to realizing high screen occupation ratio and improving the overall display quality of products.

Of course, it is not necessary for any one product embodying the invention to achieve all of the technical effects described above at the same time.

Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a schematic diagram of a display panel according to the related art;

fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the invention;

FIG. 3 is a partial schematic view of the second frame area of FIG. 1;

fig. 4 is a schematic structural diagram of a capacitive touch display panel according to an embodiment of the present invention;

FIG. 5 is an enlarged view of a portion of the second rim area of FIG. 2;

FIG. 6 is an enlarged view of a portion of the second rim area of FIG. 2;

fig. 7 is a schematic structural diagram of a display panel according to an embodiment of the invention;

FIG. 8 is a schematic diagram illustrating a portion of signal lines according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of another layout of a portion of signal lines according to an embodiment of the present invention;

Fig. 10 is a schematic structural diagram of a display device according to an embodiment of the invention.

Detailed Description

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

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims (the claims) and their equivalents. The embodiments provided by the embodiments of the present invention may be combined with each other without contradiction.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

The invention provides a display panel, which comprises a display area and a non-display area surrounding the display area, wherein the non-display area comprises a first frame area, a second frame area and a bending area; the first frame area and the second frame area are positioned at different sides of the display area; the bending area is positioned at one side of the second frame area far away from the display area; the display panel comprises a display substrate and a touch control layer, and the touch control layer is arranged on one side of the display substrate along the thickness direction of the display substrate; the display substrate comprises a first touch lead and a second touch lead, and the second touch lead is positioned in the bending area; the touch layer comprises a first touch electrode, a first touch wire and a first terminal area; the first terminal area is positioned in the first frame area and comprises a first line changing hole; one end of the first touch control wire is connected with the first touch control electrode, the other end of the first touch control wire is connected with one end of a first touch control lead wire positioned on the display substrate through a first wire changing hole, and the other end of the first touch control lead wire is connected with a second touch control lead wire of the bending area. According to the display panel provided by the invention, the traditional arrangement mode of the touch terminal area is broken, at least a part of the touch terminal area is arranged in the first frame area, so that the number of line replacement holes in the second frame area is reduced or even no line replacement holes are arranged; the reduction of the number of the line changing holes in the second frame region can reduce the width of the second frame region to a certain extent; in addition, the touch control lead wire of the bending area can be matched with the touch control lead wire of the bending area; in addition, as the number of the line changing holes in the second frame area is reduced, the space is saved, and the width or the line distance of the first touch lead can be properly increased by utilizing the part of space, so that the line breakage risk of the first touch lead is reduced.

The foregoing is the core idea of the present invention, and the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments that may be obtained by a person of ordinary skill in the art without making any inventive effort are within the scope of the embodiments of the present invention.

Fig. 1 is a schematic structural diagram of a display panel in the related art, please refer to fig. 1, wherein the display panel includes a display area and a non-display area surrounding the display area, the non-display area includes a second frame area B2 'and a bending area W1'; the bending area W1 'is positioned at one side of the second frame area B1' away from the display area; the display panel 1 includes a display substrate 1' and a touch layer 2', the touch layer 2' includes a touch electrode 21', a touch trace 22' and a touch terminal area 23', the touch electrode 21' is located in a display area, the touch trace 22' and the touch terminal area 23' are located in a non-display area, and the touch terminal area 23' is located in a first frame area B1' of the non-display area.

With continued reference to fig. 1, the display panel includes a display substrate 1 'and a touch layer 2', the display substrate 1 'generally includes a substrate, a driving layer, a light emitting layer, and a packaging layer, wherein the driving layer is disposed on one side of the substrate, the light emitting layer is disposed between the driving layer and the packaging layer, and the touch layer 2' is directly formed on the surface of the packaging layer by using a Flexible multilayer (Flexible MultilayerOnCell, FMLOC) technology.

With continued reference to fig. 1, to achieve a high screen duty cycle, it is desirable to compress the second bezel area B2' in the first direction X and the second direction Y; however, as shown in fig. 1, in the second direction Y, in order to prevent the touch terminal area 23 'from being affected by the residual organic encapsulation layer and not being etched, the touch terminal area 23' cannot be too close to the display area in the second direction Y; in addition, the width of the bending region W1 'is further compressed along the first direction X, especially the periphery of the circular product, and thus, the width of the touch lead 24' on the display substrate 1 'located in the bending region W1' is gradually compressed; generally, the touch traces 22' and the touch leads 24' need to be connected in a one-to-one correspondence, but since the width of the line changing hole in the touch terminal area 23' is larger than that of the touch leads 24' in the bending area W1', the distance from the touch terminal area 23' to the bending area W1' needs to have a certain slope, and when the distance from the touch terminal area 23' to the bending area W1' is further compressed, the design of the position will be a bottleneck point.

Aiming at the design bottleneck point, the invention provides a solution by comprehensively analyzing the structure of the display panel.

Fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention, referring to fig. 2, the display panel of the present invention includes a display area and a non-display area surrounding the display area, wherein the non-display area includes a first frame area B1, a second frame area B2 and a bending area W1; the first frame area B1 and the second frame area B1 are positioned at different sides of the display area; the bending area W1 is positioned at one side of the second frame area B1 far away from the display area; the display panel comprises a display substrate 1 and a touch control layer 2, wherein the touch control layer 2 is arranged on one side of the display substrate 1 along the thickness direction of the display substrate; the display substrate 1 comprises a first touch lead 11 and a second touch lead 12, and the second touch lead 12 is positioned in the bending area W1; the touch layer 2 includes a first touch electrode 21, a first touch trace 22, and a first terminal area 23; the first terminal area 23 is located in the first frame area B1, and the first terminal area 23 includes a first wire exchanging hole 231; one end of the first touch trace 22 is connected to the first touch electrode 21, the other end of the first touch trace 22 is connected to one end of the first touch lead 12 located on the display substrate 1 through the first wire exchanging hole 231, and the other end of the first touch lead 12 is connected to the second touch lead 12 in the bending area W1.

With continued reference to fig. 2, the display panel of the present invention includes a binding area BD, wherein the binding area BD is connected to the bending area W1 and is located at a side of the bending area W1 away from the second frame area B2, the binding area BD is provided with a touch driving IC, the touch driving IC is configured to send a touch driving signal to the touch layer 2 and receive an induction signal returned by the touch layer 2, and the touch driving IC is disposed on the display substrate 1.

The touch layer 2 of the present invention includes a first touch electrode 21 and a first touch trace 22; the display substrate 1 includes a first touch lead 11, a second touch lead 12 and a touch driving IC, so that a first wire exchanging hole 231 needs to be provided in the thickness direction of the display panel, the first touch electrode 21 of the touch layer 2 is electrically connected with the touch driving IC of the display substrate 1 by using the first wire exchanging hole 231, specifically, the first touch electrode 21 is electrically connected with one end of the first touch lead 22, the other end of the first touch lead 22 is electrically connected with one end of the first touch lead 11 in the display substrate by a conductor in the first wire exchanging hole 231, and the other end of the first touch lead 11 is electrically connected with the touch driving IC by the second touch lead 12, so as to realize the touch function of the display panel.

Referring to fig. 1 and 2, in the structure shown in fig. 1, the touch terminal area 23' is only located in the second frame area B2', and all the touch traces 22' are electrically connected to the touch leads 24' disposed in the display substrate 1' through the corresponding plurality of line exchanging holes 231' disposed in the touch terminal area 23 '. According to the display panel provided by the invention, the traditional arrangement mode of the touch terminal area 23' is broken, and at least a part of the touch terminal area is arranged in the first frame area B1, so that the number of line changing holes in the second frame area B2 is reduced; the reduction of the number of the line changing holes in the second frame area B2 may bring convenience in several aspects, on the one hand, the reduction of the number of the line changing holes may reduce the width of the second frame area B2 along the first direction X; on the other hand, as the number of the wire changing holes in the second frame area B2 is reduced, space is saved, and by utilizing the partial space, the width of the first touch lead 11 can be properly increased, so that the wire breakage risk of the first touch lead 11 is reduced; in the third aspect, the number of the wire-changing holes in the second frame area is reduced, and the routing period of the first touch lead 11 in the second frame area B2 is relatively smaller and can be matched with the routing period of the bending area W1 smaller, so that when the first touch lead 11 and the second touch lead 12 are connected in one-to-one correspondence, the dislocation degree in the first direction X is reduced, which is conducive to matching of the first touch lead and the second touch lead; in addition, referring to fig. 3, fig. 3 is a partial schematic diagram of the second frame area in fig. 1, in fig. 3, the misalignment degree of the touch trace 22 'and the touch lead 24' in the X direction is higher, and only the connection can be made by means of the diagonal line segment, and the higher the misalignment degree, the larger the slope of the diagonal line segment is generally, and the easier the diagonal line segment of the connection portion enters the bending area, the more the slope of the diagonal line segment entering the bending area is, the more likely the disconnection occurs during bending, so if the slope of the diagonal line segment is to be reduced, the distance in the Y direction needs to be increased to avoid the diagonal line segment entering the bending area; therefore, the reduction of the number of loop holes in the second frame region B2 also contributes to the reduction of the distance of the second frame region B2 in the Y direction and the realization of a narrower bending region. The wiring period mentioned above and below refers to the sum of the line width of the wiring and the distance between two adjacent wirings.

In summary, the first terminal area 23 is disposed in the first frame area B1, and the first touch electrode 21 is electrically connected to the first terminal area 23 at the first frame area B1 through the first touch trace 22, so that an electrical signal of the first touch electrode 21 is changed to the display substrate 1 through the first frame area B1, so that the number of line changing holes at the second frame area B2 of the display panel is reduced, the space at the second frame area B2 is released, the size of the second frame area B2 along the first direction X and the second direction Y is reduced, the breakage risk of the first touch lead 11 can be reduced, the routing period of the first touch lead 11 at the second frame area B2 can be relatively smaller, the routing period of the first touch lead 11 can be matched with the smaller routing period of the bending area W1, and the implementation of the narrower bending area W1 is facilitated.

With continued reference to fig. 2, in some alternative embodiments of the present invention, the display substrate 1 further includes a third touch lead 13 and a fourth touch lead 14; the fourth touch lead 14 is located in the bending area W1; the touch layer 2 further includes a second touch electrode 24, a second touch trace 25, and a second terminal area 26; the second terminal area 26 is located in the second frame area B2, and the second terminal area 26 includes a second line changing hole 261; one end of the second touch trace 25 is connected with the second touch electrode 24, the other end of the second touch trace 25 is connected with one end of a third touch lead 13 located on the display substrate 1 through a second wire changing hole 261, and the other end of the third touch lead 13 is connected with a fourth touch lead 14 in the bending area W1.

Specifically, referring to fig. 2, the display panel of the present invention further includes a bonding area BD, the bonding area BD is connected to the bending area W1 and is located at a side of the bending area W1 away from the second frame area B2, and the second terminal area 26 is disposed in the second frame area B2, so that the second touch electrode 24 of the touch layer 2 can be electrically connected to the second wire exchanging hole 261 of the second terminal area 26 through the second touch wire 25, and electrically connected to the third touch lead 13 and the fourth touch lead 14 disposed at the display substrate side through the electrical conductor in the second wire exchanging hole 261, and the fourth touch lead 14 is electrically connected to the touch driving IC, so that the electrical connection between the second touch electrode 24 and the touch driving IC is realized.

With continued reference to fig. 2, in the display panel shown in fig. 2, terminal areas are disposed in the first frame area B1 and the second frame area B2, so that the touch electrodes in the touch layer 2 can change lines through the terminal areas located in different frame areas, so that the pressure of changing lines independently in the second frame area B2 can be reduced, the release of the second frame area B2 space is facilitated, and the size of the second frame area B2 along the first direction X and the second direction Y can be reduced to a certain extent based on the similar reasons, and the increase of the widths or the pitches of the second touch trace 25 and the third touch trace 13 is facilitated, so that the occurrence of the disconnection risk is avoided; and because the number of the wire changing holes in the second frame area B2 is reduced, the wiring period of the first touch lead 11 in the second frame area B2 can be relatively smaller, and can be matched with the wiring period of the bending area W1 smaller, the dislocation degree of the first touch lead 11 and the second touch lead 12 in the first direction X is reduced, the connection of the first touch lead 11 and the second touch lead 12 in a one-to-one correspondence is facilitated, and the realization of the narrower bending area W1 is facilitated.

It should be noted that, fig. 2 only illustrates the distribution of the first frame area B1, the second frame area B2 and the bending area W1 by taking the display panel with a rounded rectangular structure as an example, and the actual shape of the display panel is not limited, and in some other embodiments of the present invention, the shape of the display panel may also be other shapes, such as a circle.

It should be further noted that fig. 2 only shows a schematic view of the display substrate, which is intended to illustrate that the terminal area of the touch electrode of the present invention may be disposed in the first frame area B1, so as to release the space of the second frame area B2; the position of the first frame area B1 may be a position opposite to the second frame area B2, such as an upper frame, or may be a left frame or a right frame.

In addition, it should be noted that fig. 2 shows a schematic structural diagram of the terminal area in the first frame area B1 and the second frame area B2; in practical situations, under the condition that the first frame area has enough space, the terminal area for connecting the touch control layer and the display substrate can be only arranged in the first frame area B1, so that the space of the second frame area B2 can be released to the greatest extent, the reduction of the size of the second frame area B2 is facilitated, the increase of the touch control wiring width is facilitated, and the disconnection is avoided; and the routing period of the first touch lead 11 in the second frame area B2 can be relatively smaller, and can be matched with the routing period of the bending area W1 smaller.

Fig. 4 is a schematic diagram of a display panel according to an embodiment of the invention, referring to fig. 4, in some alternative embodiments of the invention, the first touch electrode 21 is a touch sensing electrode, and the second touch electrode 24 is a touch driving electrode.

Specifically, the display panel of the present invention can be used for both a mutual capacitive touch display panel and a self-capacitive touch display panel, and the display panel shown in fig. 2 is a self-capacitive touch display panel structure, and the display panel shown in fig. 4 is a mutual capacitive touch display panel structure.

With continued reference to fig. 4, in the capacitive touch display panel, the first touch electrode 21 is preferably a touch sensing electrode, and the second touch electrode 24 is a touch driving electrode. Specifically, in the mutual capacitive touch display panel, the touch layer 2 includes a driving electrode array and a sensing electrode array, the driving electrode array includes a plurality of driving electrode columns arranged along the first direction X, each driving electrode column includes a plurality of second touch electrodes 24 arranged along the second direction Y, and the plurality of second touch electrodes 24 located in the same column are connected in series; the sensing electrode array comprises a plurality of sensing electrode rows arranged along the second direction Y, each sensing electrode row comprises a plurality of first touch electrodes 21 arranged along the first direction X, and the first touch electrodes 21 positioned in the same column are connected in series; the second touch electrodes 24 in the driving electrode array and the first touch electrodes 21 in the sensing electrode array are staggered with each other and insulated from each other.

With continued reference to fig. 4, in the mutual capacitive display panel, the line-changing holes of the driving electrode rows are preferably disposed in the second frame area B2; since the plurality of second touch electrodes 24 in the plurality of driving electrode columns are connected in series, only the second touch electrode 24 closest to the second frame area B2 in each driving electrode column needs to be provided with a second touch trace 25, and the second touch trace 25 is electrically connected to the second wire exchanging hole 261 of the second terminal area 26; the plurality of first touch electrodes 21 in the plurality of sensing electrode rows are connected in series with each other, so only the first touch electrode 21 closest to the frame area in each row needs to be provided with a first touch trace 22, and the first touch trace 22 is routed in the frame area and electrically connected with the first wire exchanging hole 231 of the first terminal area 23 located in the first frame area B1.

With continued reference to fig. 4, as apparent from fig. 4, since the second frame area B2 is adjacent to the bending area W1 and the touch driving IC is located in the binding area BD, the binding area BD is adjacent to the bending area W1, and therefore, in general, the distance between the first frame area B1 and the touch driving IC is greater than the distance between the second frame area B2 and the touch driving IC.

With continued reference to fig. 4, in the capacitive display panel, the touch driving IC needs to charge the touch driving electrode, and receives a time change of the released charge on the sensing electrode, and determines whether the surface of the display panel is touched, so as to obtain the touch position.

In order to improve the touch sensitivity of the mutual capacitance type touch display panel, the touch driving voltage is ensured at first, and the sensing signal can be obtained effectively under the proper touch driving voltage; based on this, the second touch electrode 24 is used as a touch driving electrode, the second touch electrode 24 is used for changing wires through the second terminal area 26 positioned at the second frame area B2, and is electrically connected with the touch driving CI through the third touch lead 13 and the fourth touch lead 14; because the length of the signal connection line required between the touch drive IC and each drive electrode row is shorter than the length of the signal connection line required between the touch drive IC and each sense electrode row; therefore, the second touch electrode 24 is used as the touch driving electrode, so that attenuation generated in the transmission process of the touch driving signal can be reduced to a certain extent, and the touch sensitivity of the mutual capacitance type touch display panel is improved.

It should be noted that fig. 4 only shows a schematic structural diagram of the mutual capacitive touch display panel, and from the schematic view, the second frame area B2 is a lower frame area, and the first frame area B1 is an upper frame area; however, the structure shown in fig. 4 cannot be used as a limitation of the mutual capacitive touch display panel, and different panel structures can be generated by different application environments or application requirements, and the second frame area B2 of the present invention generally refers to a frame area close to the bending area W1 and the touch driving IC; taking a rectangular display panel as an example, if the touch driving IC is located on the upper side of the display panel, the second frame area B2 is the upper frame of the display panel.

Fig. 5 is a partial enlarged view of the second frame area in fig. 2, in some alternative embodiments of the present invention, the first touch lead 11 includes a first connection sub-segment 111, the first connection sub-segment 111 is located in the second frame area B2, the first connection sub-segment 111 is directly connected to the second touch lead 12, and the first connection sub-segment 111 and the second touch lead 12 are disposed in the same direction; the third touch lead 13 includes a second connection sub-segment 131, where the second connection sub-segment 131 is located in the second frame area B2, the second connection sub-segment 131 is directly connected to the fourth touch lead 14, and the setting directions of the second connection sub-segment 131 and the fourth touch lead 14 are the same.

Referring to fig. 2 and 5, in the display panel provided by the present invention, since the first touch electrode 21 is connected to the display substrate 1 through the first line changing hole 231 in the first terminal area 23 located at the first frame area B1, the number of the second line changing holes 261 required to be provided in the second frame area B2 is reduced; in addition, since the width of the first touch lead 11 is generally smaller than the width of the second wire changing hole 261, when the first touch lead 11 passes through the second frame area B2, the first touch lead 11 may be closer to the corresponding second touch lead 12 located in the bending area W1 along the first direction X, so that the slope of the buffer section at the connection between the first touch lead 11 and the second touch lead 12 may be reduced, and the first connection sub-section 111 consistent with the routing direction of the second touch lead 12 may be disposed therein.

Based on the above, the first connection subsection 111 which is consistent with the routing direction of the second touch lead 12 is arranged at the connection position of the first touch lead 11 and the second touch lead 12, so that in the bending state, the routing direction of the first subsection 111 connected with the first touch lead 12 is the same as that of the second touch lead 12, and the disconnection risk caused by uneven stress after bending can be reduced.

With continued reference to FIG. 2, in some alternative embodiments of the present invention, the non-display region further includes an isolation dam region GB; the isolation dam area GB is disposed around the display area, and the first terminal area 23 and the second terminal area 26 are disposed on a side of the isolation dam area GB away from the display area.

With continued reference to fig. 2, in general, the isolation dam GB serves to block the organic encapsulation layer and prevent the organic encapsulation layer from crossing the isolation dam, so the thickness of the isolation dam GB is generally thicker. In the invention, the first terminal area 23 and the second terminal area 26 are arranged across the isolation dam area GB, the substrate 1 is shown to lack the coverage of an organic layer packaging layer, the thickness of the film layer is thinned, and the first line changing hole 231 and the second line changing hole 232 are more conveniently arranged.

FIG. 6 is an enlarged view of a portion of the second rim area of FIG. 2; in some alternative embodiments of the present invention, the first touch lead 11 and the second touch trace 25 do not overlap in the area between the isolation dam area GB and the inflection area W1.

Specifically, as shown in fig. 6, along the thickness direction of the display panel, the first touch lead 11 and the second touch trace 25 are located at different layers of the display panel, wherein the first touch lead 11 is located at the display substrate, and the second touch trace 25 is located at the driving layer, so that the first touch lead 11 and the second touch trace 25 may overlap in a projection manner in a direction perpendicular to the plane of the display panel, or may be staggered from each other; the invention takes the isolation dam area GB as a boundary, the thickness between the driving layer and the first touch lead 11 wiring layer is thicker due to the existence of the organic packaging layer, and the signal influence between the first touch lead 11 and the second touch lead 25 is smaller, so that the first touch lead 11 and the second touch lead 25 which are wired between the display area and the isolation dam area GB can overlap, thereby reducing the signal wiring area; however, in the position between the isolation dam area GB and the bending area W1, the thickness between the driving layer and the wiring layer of the first touch lead 11 is thinner, so as to avoid the mutual influence of the transmission signals between the first touch lead 11 and the second touch lead 25, and in the area between the isolation dam area GB and the bending area W1, the first touch lead 11 and the second touch lead 25 do not overlap.

With continued reference to fig. 2 and 4, in some alternative embodiments of the present invention, a portion of the first touch lead 11 is located between the isolation dam GB and the display area.

With continued reference to fig. 2 and 4, the isolation dam area GB is disposed around the display area, the first terminal area 23 and the second terminal area 26 are disposed on a side of the isolation dam area GB away from the display area, and a portion of the first touch lead 11 is located between the isolation dam area GB and the display area; specifically, in the display substrate 1, some idle areas are arranged between the isolation dam area GB and the display area, and the invention sets partial sections of the first touch lead 11 between the isolation dam area GB and the display area, so that the idle areas between the isolation dam area GB and the display area can be effectively utilized, and the phenomenon that the frame area is too wide due to the fact that the first touch lead 11 is routed by additionally adding the areas is avoided as much as possible; in addition, compared with the situation that the first touch lead 11 is arranged on one side of the isolation dam GB, which is far away from the display area, the first touch lead 11 is far away from the edge of the display area, so that the first touch lead 11 can be prevented from being influenced by static electricity or cracks generated by cutting of the display panel as much as possible, and the interference of the static electricity or the cracks on the transmission signals of the first touch lead 11 is reduced.

Further, in some embodiments of the present invention, along the second direction Y, the first frame area B1 and the second frame area B2 are an upper frame and a lower frame of the display panel, respectively; along the first direction X, the display panel further comprises a left frame and a right frame which are positioned at two sides of the display area, the isolation dam area GB comprises a first side isolation dam, a second side isolation dam, a third side isolation dam and a fourth side isolation dam, the first side isolation dam and the second side isolation dam are respectively positioned at a first frame area B1 and a second frame area B2 of the display area, and the third side isolation dam and the fourth side isolation dam are respectively positioned at an upper frame and a lower frame. In general, the left frame and the right frame of the display panel are arranged with peripheral control circuits, and the first terminal area is set in the first frame area B1 in the invention to avoid affecting the functional circuit as much as possible; further, the first touch lead 11 connected to the first terminal area 23 needs to be routed to the second frame area B2 so as to be electrically connected to the second touch lead 12 in the bending area W1, for similar reasons as described above, in order to prevent static electricity and crack effects and to minimize the width of the left and right frames, a portion of the first touch lead of the present invention may be routed to the second frame area B2 via the area between the third side isolation dam and the display area or routed to the second frame area B2 via the area between the fourth side isolation dam and the display area; further, in order to avoid the risk of short circuit caused by too close wiring or too much wiring, the first touch lead 11 of the present invention is routed from the first frame area B1 to the second frame area B2 via the area between the third side isolation dam and the display area, and the first touch lead 11 is routed from the first frame area B1 to the second frame area B2 via the area between the fourth side isolation dam and the display area. In summary, according to the invention, the partial section of the first touch lead 11 is arranged between the isolation dam area GB and the display area, so that the idle area between the isolation dam area GB and the display area can be effectively utilized, and the phenomenon that the frame area is too wide due to the fact that the first touch lead 11 is routed by additionally adding the area is avoided as much as possible; secondly, the first touch lead 11 can be prevented from being affected by static electricity generated when the display panel is cut as much as possible, and interference of the static electricity on signal transmission of the first touch lead 11 is reduced.

Fig. 7 is a schematic structural diagram of a display panel according to an embodiment of the present invention, and referring to fig. 7, in some alternative embodiments of the present invention, in a thickness direction of the display panel, a projection of a first touch lead 11 partially segment overlaps a projection of a barrier region GB.

Referring to fig. 7, the first terminal area 23 and the second terminal area 26 are located in the first frame area B1 and the second frame area B2; along the second direction Y, the first frame area B1 and the second frame area B2 are located at opposite sides of the display area; the isolation dam region comprises a first side isolation dam, a second side isolation dam, a third side isolation dam and a fourth side isolation dam, the first side isolation dam and the second side isolation dam are respectively located at two opposite sides of the display region along the second direction Y, the third side isolation dam and the fourth side isolation dam are located at two opposite sides of the display region along the first direction X, part of the first touch lead 11 is routed from the first frame region B1 to the second frame region B2 through the lower part of the third side isolation dam, and part of the first touch lead 11 is routed from the first frame region B1 to the second frame region B2 through the lower part of the fourth side isolation dam.

In the invention, the projection of the first touch lead 11 part section overlaps with the projection of the isolation dam area GB along the thickness direction of the display panel, so that the frame area where the third side isolation dam and the fourth side isolation dam are positioned can be free from additionally arranging the wiring space of the first touch lead 11, the width of the frame area where the third side isolation dam and the fourth side isolation dam are positioned can be not increased to a certain extent, and the realization of the narrow frame structure of the display panel is facilitated. In addition, for similar reasons, the present invention is more advantageous for realizing the narrow frame structure of the display panel when a part of the first touch lead 11 is routed from the first frame area B1 to the second frame area B2 via the lower portion of the third side isolation dam, and a part of the first touch lead 11 is routed from the first frame area B1 to the second frame area B2 via the lower portion of the fourth side isolation dam.

Fig. 8 is a schematic layout diagram of a portion of signal lines provided by an embodiment of the present invention, referring to fig. 8, in some alternative embodiments of the present invention, the display substrate 1 further includes a power voltage signal line, and the first touch lead 11 is located at a side of the power voltage signal line away from the display area.

Specifically, referring to fig. 2 and 8, the first touch lead 11 is routed in the frame area; generally, the frame area of the display panel also has a signal line L1 of the peripheral driving circuit and a negative power supply voltage signal line PVEE, and since the first touch lead 11 transmits an ac signal, the signal transmitted by the signal line of the peripheral driving circuit is also an ac signal, and if the distance between the two ac signals is too short, an interference phenomenon is easily generated; therefore, in order to avoid signal crosstalk between the first touch lead 11 and the signal trace of the peripheral driving circuit, the first touch lead 11 is disposed on the side of the power supply voltage signal line PVEE far away from the display area, and the signal trace L1 of the peripheral driving circuit is disposed on the side of the power supply voltage signal line PVEE near the display area.

Fig. 9 is another schematic layout diagram of a portion of signal lines provided in an embodiment of the present invention, referring to fig. 9, in some alternative embodiments of the present invention, the display substrate 1 further includes a power voltage signal line, the power voltage signal line includes a first portion of power voltage signal line and a second portion of power voltage signal line, and the first touch lead is located between the first portion of power voltage signal line and the second portion of power voltage signal line.

Referring to fig. 2 and 9, for the same reason as described above, in order to avoid signal crosstalk between the first touch lead 11 and the signal trace L1 of the peripheral driving circuit, the power supply voltage signal line PVEE is divided into two parts, including a first part of power supply voltage signal line and a second part of power supply voltage signal line, and the first touch lead 11 is disposed between the first part of power supply voltage signal line and the second part of power supply voltage signal line, so that the first part of power supply voltage signal line and the second part of power supply voltage signal line can play a shielding role on the ac signal transmitted by the first touch lead 11, and reduce the crosstalk between the ac signals.

With continued reference to fig. 2, in some alternative embodiments of the present invention, the first touch electrode 21 and the second touch electrode 24 are self-capacitance touch electrodes.

Specifically, for the self-capacitance touch display panel, each touch electrode needs to be connected with a touch drive IC through a signal line so as to charge and detect, therefore, the touch leads of the self-capacitance touch electrode are more, if only the terminal area is arranged in the second frame area B2, the width of the second frame area B2 required in the first direction X is difficult to be reduced, and the pressure of arranging the terminal area on one side to change the lines is relieved to a great extent by arranging the terminal areas in the first frame area B1 and the second frame area B2; meanwhile, based on the utilization similar to the above, the width of the second frame area B2 in the first direction X and the second direction Y is reduced, the width and the interval of the touch leads can be increased, and the broken wires are reduced; and facilitates the one-to-one connection of the first touch lead 11 and the second touch lead 12, and facilitates the realization of the narrower bending region W1.

In some embodiments of the invention, the display panel may be an AM-OLED, and may also be a PM-OLED.

Based on the same inventive concept, the present invention also provides a display device, please refer to fig. 10, fig. 10 is a schematic structural diagram of a display device provided in an embodiment of the present invention, and the display device 200 provided in the embodiment includes the display panel 100 provided in any of the above embodiments of the present invention.

It should be understood that the display device 200 provided in the embodiment of the present invention may be a computer, a mobile phone, a tablet, or other display devices with display functions, which is not limited in this way. The display device provided by the embodiment of the present invention has the beneficial effects of the display panel provided by the embodiment of the present invention, and the specific description of the display panel in the above embodiments may be referred to specifically, and this embodiment is not repeated here.

In summary, the display panel and the display device provided by the invention at least realize the following beneficial effects:

according to the display panel provided by the invention, the traditional arrangement mode of the touch terminal area is broken, at least a part of the touch terminal area is arranged in the first frame area B1, so that the number of line changing holes in the second frame area B2 is reduced; the reduction of the number of the line changing holes in the second frame area B2 may bring convenience in several aspects, on the one hand, the reduction of the number of the line changing holes may reduce the width of the second frame area B2 along the first direction X; on the other hand, as the number of the wire changing holes in the second frame area B2 is reduced, space is saved, and by utilizing the partial space, the width of the first touch lead 11 can be properly increased, so that the wire breakage risk of the first touch lead 11 is reduced; in the third aspect, the number of the wire changing holes is reduced, the routing period of the first touch lead 11 in the second frame area B2 may be relatively smaller, and may be matched with the smaller routing period of the bending area W1, so that the dislocation degree of the first touch lead 11 and the second touch lead 12 in the first direction X is reduced, which is conducive to one-to-one connection of the first touch lead 11 and the second touch lead 12, and is conducive to realization of the narrower bending area W1, and is conducive to shortening of the distance of the second frame area B2 in the Y direction; furthermore, the terminal areas are arranged in the first frame area B1 and the second frame area B2, so that the touch electrode in the touch layer 2 can change wires through the terminal areas positioned in different frame areas, the pressure of changing wires independently in the second frame area B2 can be reduced, the release of the second frame area B2 space is facilitated, the size reduction of the second frame area B2 along the first direction X and the second direction Y can be realized to a certain extent due to the similar reasons, the increase of the widths or the intervals of the second touch routing 25 and the third touch leads 13 is facilitated, the generation of wire breakage risks is avoided, and the realization of the smaller bending area W1 is facilitated; in addition, the second touch electrode 24 is used as a touch driving electrode, so that attenuation generated in the transmission process of a touch driving signal can be reduced to a certain extent, and the touch sensitivity of the mutual capacitance type touch display panel is improved; in the invention, the first connection subsection 111 which is consistent with the wiring direction of the second touch lead 12 is arranged at the connection part of the first touch lead 11 and the second touch lead 12, so that in the bending state, the wiring direction of the first connection subsection 111 connected with the first touch lead 12 is the same as that of the second touch lead 12, and the disconnection risk caused by uneven stress after bending can be reduced; thirdly, the partial section of the first touch lead 11 is positioned between the isolation dam area GB and the display area or overlapped with the projection of the isolation dam area GB in the thickness direction of the display panel, so that the phenomenon that the frame area is too wide due to the fact that the first touch lead 11 is routed in an additional area can be avoided as much as possible; finally, the first touch lead 11 is located at one side of the power supply voltage signal line far away from the display area or located between the first part of power supply voltage signal line and the second part of power supply voltage signal line, so that interference between different alternating current signals in the frame area can be avoided as much as possible.

While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may 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 (12)

1. The display panel is characterized by comprising a display area and a non-display area surrounding the display area, wherein the non-display area comprises a first frame area, a second frame area and a bending area; the first frame area and the second frame area are positioned on different sides of the display area; the bending area is positioned at one side of the second frame area away from the display area;

the display panel comprises a display substrate and a touch layer, and the touch layer is arranged on one side of the display substrate along the thickness direction of the display substrate;

the display substrate comprises a first touch lead and a second touch lead, and the second touch lead is positioned in the bending area;

the touch layer comprises a first touch electrode, a first touch wire and a first terminal area; the first terminal area is located in the first frame area and comprises a first line changing hole;

One end of the first touch control wire is connected with the first touch control electrode, the other end of the first touch control wire is connected with one end of a first touch control lead wire positioned on the display substrate through the first wire changing hole, and the other end of the first touch control lead wire is connected with a second touch control lead wire of the bending area.

2. The display panel of claim 1, wherein the display substrate further comprises a third touch lead and a fourth touch lead; the fourth touch lead is positioned in the bending area;

the touch layer further comprises a second touch electrode, a second touch wire and a second terminal area; the second terminal area is located in the second frame area, and the second terminal area comprises a second line changing hole;

one end of the second touch control wire is connected with the second touch control electrode, the other end of the second touch control wire is connected with one end of a third touch control lead wire positioned on the display substrate through the second wire changing hole, and the other end of the third touch control lead wire is connected with a fourth touch control lead wire of the bending area.

3. The display panel of claim 2, wherein the first touch electrode is a touch sensing electrode; the second touch electrode is a touch driving electrode.

4. The display panel of claim 2, wherein the first touch lead comprises a first connection sub-segment, the first connection sub-segment is located in the second frame area, the first connection sub-segment is directly connected to the second touch lead, and the first connection sub-segment and the second touch lead are arranged in the same direction;

the third touch lead comprises a second connection sub-section, the second connection sub-section is located in a second frame area, the second connection sub-section is directly connected with the fourth touch lead, and the setting direction of the second connection sub-section is the same as that of the fourth touch lead.

5. The display panel of claim 2, wherein the non-display region further comprises an isolation dam region;

the isolation dam region is arranged around the display region, and the first terminal region and the second terminal region are arranged on one side, far away from the display region, of the isolation dam region.

6. The display panel of claim 5, wherein the first touch lead and the second touch trace do not overlap in a region between the barrier region and the inflection region.

7. The display panel of claim 5, wherein a portion of the first touch lead is located between the barrier region and the display region.

8. The display panel of claim 5, wherein in a thickness direction of the display panel, a projection of the first touch lead portion segment overlaps a projection of the barrier rib region.

9. The display panel of claim 7 or 8, comprising a supply voltage signal line, wherein the first touch lead is located on a side of the supply voltage signal line away from the display area.

10. The display panel of claim 7 or 8, comprising a power supply voltage signal line comprising a first portion of the power supply voltage signal line and a second portion of the power supply voltage signal line, the first touch lead being located between the first portion of the power supply voltage signal line and the second portion of the power supply voltage signal line.

11. The display panel of claim 1 or 3, wherein the first touch electrode and the second touch electrode are self-contained touch electrodes.

12. A display device comprising the display panel according to any one of claims 1 to 11.