Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device.The display panel comprises a display area and a non-display area at least partially surrounding the display area; the display panel comprises a substrate, a metal layer and a touch layer, wherein the metal layer and the touch layer are arranged on the substrate, and the touch layer comprises a plurality of touch electrodes; the display panel is further provided with first touch signal lines electrically connected with the touch electrodes. The first touch signal lines at least partially located in the display area are arranged on the metal layer, and the first touch signal lines extend to the non-display area. According to the technical method, the first touch signal lines electrically connected with the touch electrodes are arranged on the metal layer, at least part of the first touch signal lines are located in the display area, and the first touch signal lines extend to the non-display area, so that wiring in the non-display area is reduced, the width of the non-display area is reduced to a certain extent, and the display effect is improved. Therefore, the width of the display area is increased to a certain extent, the display effect is improved, and the user experience is improved.

Description

Technical Field

[0001] The embodiments in this specification relate to the field of display technology, and specifically to a display panel and a display device. Background Art

[0002] With the development of science and technology, various electronic products have become an indispensable part of our lives, playing a vital role in people's work and study, information communication, daily life and other fields. With the continuous iteration and development of products, people gradually require electronic products to have better display effects.

[0003] As people's demand for display effects continues to increase, full-screen display has become a new display technology, which is loved by more people because of its wide display area. Full-screen display has a very high visual experience, bringing users a more novel visual experience. The application of full-screen display in multiple fields has made it continue to integrate into our lives. However, at present, an aesthetically unattractive border area will be formed around the periphery of the display, resulting in the phenomenon that the border affects the full-screen display, thereby affecting the full-screen display effect. Summary of the invention

[0004] In view of this, multiple embodiments of the present specification are directed to providing a display panel and a display device, so as to narrow the frame to a certain extent and improve the display effect of the display panel.

[0005] In order to achieve the above-mentioned purpose, an embodiment of the present specification provides a display panel, which includes a display area and a non-display area at least partially surrounding the display area; the display panel includes a substrate, and a metal layer and a touch layer arranged on the substrate, and the touch layer includes a plurality of touch electrodes; the display panel is also provided with a first touch signal line electrically connected to the touch electrode; the first touch signal line at least partially located in the display area is arranged in the metal layer, and the first touch signal line extends to the non-display area.

[0006] An embodiment of the present specification provides a display device, which includes any of the above-mentioned display panels.

[0007] Compared with the related art, the display panel provided in this specification has the following beneficial effects: by electrically connecting the first touch signal line and the touch electrode, at least part of the first touch signal line is located in the display area, the first touch signal line of this part is arranged in the metal layer, and the first touch signal line extends to the non-display area. The first touch signal line is at least partly located in the display area, so as to reduce the wiring of the non-display area, reduce the width of the non-display area to a certain extent, thereby increasing the width of the display area to a certain extent, thereby improving the display effect and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings are used to provide a further understanding of the embodiments of the specification and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present specification but do not constitute a limitation on the embodiments of the present specification.

[0009] Figure 1 This is one of the structural schematic diagrams of a display panel provided in one embodiment of this specification.

[0010] Figure 2 The second structural schematic diagram of a display panel provided for one embodiment of the present specification.

[0011] Figure 3 The third structural schematic diagram of a display panel provided for one embodiment of the present specification.

[0012] Figure 4 A fourth structural schematic diagram of a display panel provided for one embodiment of the present specification.

[0013] Figure 5 The fifth structural schematic diagram of a display panel provided for one embodiment of the present specification.

[0014] Figure 6 The sixth structural schematic diagram of a display panel provided for one embodiment of the present specification.

[0015] Figure 7 FIG. 7 is a structural schematic diagram of a display panel provided for one embodiment of the present specification.

[0016] Figure 8 The eighth structural schematic diagram of a display panel provided for one embodiment of the present specification.

[0017] Fig. 9 A ninth structural diagram of a display panel provided for one embodiment of the present specification.

[0018] Fig.10 The tenth structural diagram of a display panel provided for one embodiment of the present specification. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of this specification will be described clearly and completely below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] It should be noted that in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "includes..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.

[0021] The features and embodiments of various aspects of this specification will be described in detail below.In addition, the features, structures or characteristics described in this specification may be combined in any suitable manner in one or more embodiments.

[0022] See also Figure 1 and Figure 2 An embodiment of the present invention provides a display panel 10, the display panel 10 may include a display area 110 and a non-display area 120 at least partially surrounding the display area 110; the display panel 10 includes a substrate 210, and a metal layer 220 and a touch layer 230 disposed on the substrate 210, the touch layer 230 including a plurality of touch electrodes 111; the display panel 10 is further provided with a first touch signal line 140 electrically connected to the touch electrode 111; the first touch signal line 140 at least partially located in the display area 110 is disposed in the metal layer 220, and the first touch signal line 140 extends to the non-display area 120.

[0023] See also Figure 3 and Figure 6 In this embodiment, the display panel 10 may be an OLED (Organic Light-Emitting Diode) display panel 10. Of course, other types of display panels 10 may also be used. The display panel 10 may include a display area 110 and a non-display area 120, and at least part of the non-display area 120 is arranged around the periphery of the display area 110. A light-transmitting area is also arranged in the display area 110. The light-transmitting area may be rectangular, circular or irregular in shape, and the display area 110 may be arranged to surround the light-transmitting area, or the display area 110 may be arranged to semi-surround the light-transmitting area.

[0024] In this embodiment, the display panel 10 may include a substrate 210 and a metal layer 220 disposed on the substrate. The substrate 210 may be used to support other film layers, and the metal layer 220 may be a film layer for setting metal wiring. The metal layer 220 may be disposed between the touch layer 230 and the substrate 210.

[0025] See also Figure 3 and Figure 6 In some embodiments, one or more sides of the non-display area 120 may include components and areas that can implement certain functions. Specifically, for example, the touch driving circuit 122 is located in the non-display area 120 .

[0026] In this embodiment, the display panel 10 may include a touch layer 230 disposed in the display area 110, and the touch layer 230 may include a plurality of touch electrodes 111. The plurality of touch electrodes 111 are electrically connected to a touch drive circuit 122 located in the non-display area 120 through a first touch signal line 140, and the touch drive circuit 122 interacts with the first touch signal line 140 to achieve accurate positioning of the touch position. Specifically, for example, the touch drive circuit 122 sends a first touch drive signal to the touch signal line 140 to reach the touch electrode 111, and then transmits the touch sensing signal back to the touch drive circuit 122 through the first touch signal line 140. Among them, the touch sensing signal may be a signal such as a voltage or current on the touch electrode 111 collected by the first touch signal line 140 when a hand or other component touches the touch electrode 111, and the touch position may be determined according to a linear relationship between the capacitance formed between the finger and the touch electrode 111. The maximum width of the touch electrode 111 may be less than or equal to the width of a finger, so as to reduce misjudgment of the touch position.

[0027] In this embodiment, part of the first touch signal line 140 is located in the display area 110, part of the first touch signal line 140 located in the display area 110 is located in the metal layer 220, and the first touch signal line 140 extends from the display area 110 to the non-display area 120. By setting part of the first touch signal line 140 in the metal layer 220 of the display area 110, the routing of the non-display area 110 is reduced, thereby reducing the frame of the non-display area 120.

[0028] See also Figure 4 In some embodiments, the display panel 10 may further include a first electrode layer 240 , and the first electrode layer 240 is multiplexed as the touch control layer 230 .

[0029] In this embodiment, the display panel 10 may further include a first electrode layer 240, which may be an anode layer or a cathode layer. The first electrode layer 240 also serves as the touch layer 230, which may reduce the manufacturing process of the display panel 10, improve the manufacturing efficiency, and reduce the thickness of the display panel 10.

[0030] In some embodiments, the metal layer 220 may be a second electrode layer 250 .

[0031] In this embodiment, the metal layer 220 may be a second electrode layer 250, and the second electrode layer 250 corresponds to the first electrode layer 240. Specifically, for example, if the first electrode layer 240 is an anode layer, the second electrode layer 250 is a cathode layer. Alternatively, the first electrode layer 240 may be a cathode layer, and the second electrode layer 250 may be an anode layer. The first electrode layer 240 and the second electrode layer 250 work together to provide power to the display device, so that the display panel 10 displays images.

[0032] In some embodiments, the display panel 10 is further provided with a second touch signal line, at least one of the touch electrodes 111 is electrically connected to the second touch signal line, and at least part of the second touch signal is located in the display area 110; wherein, the second touch signal line and the first touch signal line 140 are arranged in a different layer, and the second touch signal line and the first touch signal line 140 are connected through a first through hole; or, at least part of the second touch signal line and at least part of the first touch signal line 140 are arranged in the metal layer 220, wherein the first touch signal line 140 and the second touch signal line are electrically connected.

[0033] In this embodiment, the display panel 10 may further include a second touch signal line, at least one touch electrode 111 is electrically connected to the second touch signal line, and at least part of the second touch signal line is located in the display area 110, which can reduce the routing of the non-display area 120 and reduce the width of the non-display area 120.

[0034] In this embodiment, the first touch signal line 140 and the second touch signal line are electrically connected, and the first touch signal line 140 and the second touch signal line are connected in parallel, so as to reduce the impedance of the display panel 10 .

[0035] In this embodiment, the second touch signal line and the first touch signal line 140 are arranged in different layers, and the first touch signal line 140 and the second touch signal line are electrically connected through a first through hole. The first through hole can be arranged in the display area 110, and of course, the second through hole can be arranged in the non-display area 120.

[0036] See also Figure 4 and Figure 5In some embodiments, the display panel 10 may include a plurality of sub-pixels 112 ; and the orthographic projection of the first touch signal line 140 on the substrate 210 and the orthographic projection of the sub-pixel 112 on the substrate 210 do not overlap.

[0037] In this embodiment, the display area 110 of the display panel 10 may have a light-emitting feature, so that pictures can be displayed, which is mainly achieved by combining multiple sub-pixels 112 of the display area 10 to form multiple pixel units. Specifically, for example, the sub-pixel 112 may be a plurality of R, G, and B sub-pixels, and the plurality of sub-pixels are arranged according to a certain rule, so as to realize the display function of the display area 110.

[0038] In this embodiment, the orthographic projections of all sub-pixels 112 on the substrate 210 and the orthographic projections of the first touch signal line 140 on the substrate 210 do not overlap, and the first touch signal line 140 does not affect the light emitting effect of the sub-pixel 112, thereby avoiding the first touch signal line 140 affecting the display effect.

[0039] In some embodiments, the orthographic projection of the first sub-touch signal line 130 of the touch electrode 111 on the substrate 210 and the orthographic projection of the sub-pixel 112 on the substrate 210 do not overlap, thereby preventing the first sub-touch signal line 130 from blocking the sub-pixel and affecting the display effect.

[0040] See also Figure 6 , Figure 4 , Figure 7 and Figure 8 In some embodiments, the first touch signal line 140 may include a connecting portion 141, an extending portion 142, and a first sub-touch signal line 130; wherein the first sub-touch signal line 130 is electrically connected to the touch electrode 111; the connecting portion 141 is connected to the first sub-touch signal line 130 through the second through hole 121, and extends to the inside of the display area 110 in a direction close to the display area 110.

[0041] In this embodiment, the first touch signal line 130 may include a connecting portion 141, an extending portion 142, and a first sub-touch signal line 130. The first sub-touch signal line 130 is disposed in the same layer as the touch electrode 111, and the first sub-touch signal line 130 is electrically connected to the touch electrode 111. The touch electrode 111 and the first sub-touch signal line 130 are processed together, which simplifies the process of the first sub-touch signal line 130 and reduces the cost of the first sub-touch signal line 130.

[0042] In this embodiment, the connecting portion 141 is electrically connected to the first sub-touch signal line 130 through the second through hole 121, and the extending portion 142 is electrically connected to the connecting portion 141. The extending portion extends from the display area 110 to the non-display area 120, and is electrically connected to the touch driving circuit 122 in the non-display area 120, so that the touch electrode 111 can operate normally.

[0043] In some embodiments, the second through hole 121 is located in the non-display area 120 .

[0044] In this embodiment, the second through hole 121 is located in the non-display area 120, and the first sub-touch signal line 130 extends from the display area 110 to the non-display area 120, and is electrically connected to the connection portion 140 through the second through hole 121. The connection portion 141 extends in a direction close to the display area 110 and extends to the inside of the display area 110, thereby ensuring that at least part of the first touch signal line 140 is located in the display area 110, and the space occupied by the first touch signal line 140 in the non-display area 120 can be reduced, thereby reducing the width of the non-display area 120, thereby improving the display effect.

[0045] See also Figure 6 In some embodiments, the extension portion 142 may include at least one first extension portion 1421 and at least one second extension portion 1422; the first extension portion 1421 and the connecting portion 141 extend in the same first direction, and the second extension portion 1422 extends along the second direction; wherein the first extension portion 1421 is located in the display area 110, and at least part of the second extension portion 1422 is located in the display area 110.

[0046] In this embodiment, the extending portion 142 of the first touch signal line 140 may include at least one first extending portion 1421 and at least one second extending portion 1422 . The first extending portion 1421 and the connecting portion 141 extend in the first direction, and the second extending portion 1422 extends along the second direction.

[0047] In some embodiments, the first direction and the second direction are approximately perpendicular to each other.

[0048] In this embodiment, the first direction and the second direction are nearly perpendicular to each other, and the first extension portion 1421 and the second extension portion 1422 are nearly perpendicular to each other, so that the routing length of the first touch signal line 140 is reduced and the cost is reduced.

[0049] In some embodiments, the first extending portion 1421 is located in the display area 110 , and at least part of the second extending portion 1422 is located in the display area 110 .

[0050] In this embodiment, the first extension portion 1421 is located in the display area 110, at least part of the second extension portion 1422 is located in the display area 110, and part of the second extension portion 1422 is located in the non-display area 120 for electrically connecting the first touch signal line 140 with the touch drive circuit 122, which can reduce the space occupied by the first touch signal line 140 in the non-display area 120, thereby reducing the width of the non-display area 120, thereby improving the display effect.

[0051] See also Figure 3 and Figure 4 In some embodiments, the touch electrode 111 of the display panel includes a plurality of touch patterns 1111 ; and the orthographic projection of the first touch signal line 140 on the substrate 210 does not overlap with the orthographic projection of the touch pattern 1111 on the substrate 210 .

[0052] In this embodiment, the touch layer 230 of the display panel 10 may include a touch electrode 111, which includes a plurality of touch patterns 1111 formed by graphical processing. The orthographic projection of the first touch signal line 140 on the substrate 210 does not overlap with the orthographic projection of the touch pattern 1111 on the substrate 210, which can reduce the capacitive load between the touch signal line 140 and the touch pattern 1111, thereby improving the accuracy of the touch signal transmitted to the touch drive circuit 122.

[0053] In some embodiments, the touch layer includes the touch electrode 111 and the first touch signal line 130 , and the orthographic projection of the touch electrode 111 on the substrate 210 does not overlap with the orthographic projection of the first sub-touch signal line 130 on the substrate 210 .

[0054] In this embodiment, the touch electrode 111 and the first sub-touch signal line 130 are located in the touch layer 230, and the orthographic projection of the touch electrode on the substrate 210 does not overlap with the orthographic projection of the first sub-touch signal line 130 on the substrate 210, thereby preventing the first sub-touch signal line 130 from affecting the touch signal generated by the touch electrode, thereby improving the accuracy of touch.

[0055] See also Figure 7 In some embodiments, the display panel 10 may include a pixel definition layer 260, and a first functional layer 270 is disposed on the side of the second electrode layer 221 and the pixel definition layer 260 facing the substrate 210; wherein a planar layer 280 is disposed between the first functional layer 270 and the second electrode layer 220 and the pixel definition layer 260; the first functional layer 270 includes a power signal line 271; and the orthographic projection of the first touch signal line 140 on the substrate 210 is within the orthographic projection of the power signal line 271 on the substrate 210.

[0056] In this embodiment, the display panel 10 may further include a first functional layer 270, which is located on the side of the second electrode layer 220 and the pixel definition layer 260 facing the substrate 210. A flat layer 280 is arranged between the first functional layer 270 and the second electrode layer 220 and the pixel definition layer 260. The first functional layer 270 includes a power signal line 271, which provides a power signal for driving the display panel 10 to display. The orthographic projection of the first touch signal line 140 on the substrate 210 is within the orthographic projection of the power signal line 271 on the substrate 210, thereby avoiding the power signal transmitted by the power signal line 271 from interfering with the touch signal transmitted by the first touch signal line 140, thereby improving the touch accuracy.

[0057] In some embodiments, the first functional layer 270 may also include a Vref line, a data line, and other lines. Of course, a functional layer including other lines may be provided between the first functional layer 270 and the substrate 210. Specifically, for example, the functional layer may include a scan line and an EM line. The first functional layer 270 where the power signal line 271 is located may serve as a signal shielding layer for other lines to prevent signals from other lines from interfering with the touch signal transmitted by the first touch signal line 140.

[0058] See also Figure 8 and Figure 6 In some embodiments, an orthographic projection of a portion of the power signal line 271 on the substrate 210 overlaps with an orthographic projection of a portion of the first touch signal line 140 on the substrate 210 .

[0059] In this embodiment, the orthographic projection of part of the power signal line 271 on the substrate 210 overlaps with the orthographic projection of part of the first touch signal line 140 on the substrate 210, which can reduce the load of the first touch signal line 140 and improve the accuracy of the touch signal transmitted by the first touch signal line 140, thereby improving the touch accuracy.

[0060] See also Fig. 9 and Figure 6 In some embodiments, the orthographic projection of the power signal line 251 on the substrate 210 does not overlap with the orthographic projection of the first touch signal line 140 on the substrate 210 .

[0061] In this embodiment, the orthographic projection of the power signal line 251 on the substrate 210 does not overlap with the orthographic projection of the first touch signal line 140 on the substrate 210, which further reduces the load of the first touch signal line 140 and improves the accuracy of the touch signal transmitted by the first touch signal line 140, thereby improving the touch accuracy.

[0062] See also Fig.10 and Figure 6 In some embodiments, the power signal line 271 and part of the first touch signal line 140 may be disposed in the same layer; wherein the power signal line 271 and the first touch signal line 140 are electrically isolated.

[0063] In this embodiment, the power signal line 271 and part of the first touch signal line 140 can be arranged in the same layer of the first functional layer 270, the power signal line 271 and the first touch signal line 140 are electrically isolated, and part of the first touch signal line can be the extension part 142 and the connection part 141. The power signal line 271 and the first touch signal line 140 can be directly formed on the conductive layer by etching or other methods, eliminating the need for an insulating layer or other layer structure between the power signal line 271 and the first touch signal line 140, thereby reducing the number of manufacturing steps and reducing the manufacturing cost.

[0064] An embodiment of the present specification provides a display device, characterized in that the display device may include any of the above-mentioned display panels.

[0065] The multiple embodiments in this specification emphasize the parts that are different from other embodiments, and the various embodiments can be explained in comparison with each other. Any combination of the multiple embodiments in this specification by technicians in the relevant field based on general technical knowledge is included in the disclosure scope of this specification.

[0066] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above descriptions are only some of the implementation methods in this specification and are not intended to limit this specification. Any modifications, equivalent substitutions, etc. made within the spirit and principles of this specification should be included in the scope of disclosure of this specification.

Claims

1. A display panel, characterized in that: The display panel includes a display area and a non-display area at least partially surrounding the display area; the display panel includes a substrate, and a metal layer and a touch layer disposed on the substrate, the touch layer including a plurality of touch electrodes; The display panel is further provided with a first touch signal line electrically connected to the touch electrode; the first touch signal line at least partially located in the display area is provided in the metal layer, and the first touch signal line extends to the non-display area.

2. The display panel according to claim 1, characterized in that: The display panel further includes a first electrode layer, and the first electrode layer is reused as the touch control layer; Preferably, the metal layer is a second electrode layer.

3. The display panel according to claim 1, characterized in that: The display panel is further provided with a second touch signal line, at least one of the touch electrodes is electrically connected to the second touch signal line, and at least part of the second touch signal is located in the display area; Wherein, the second touch signal line and the first touch signal line are arranged in different layers, and the second touch signal line and the first touch signal line are connected through a first through hole; or, At least a portion of the second touch signal line and at least a portion of the first touch signal line are disposed in the metal layer; wherein the first touch signal line and the second touch signal line are electrically connected.

4. The display panel according to claim 1, characterized in that: The first touch signal line includes a connecting portion, an extending portion and a first sub-touch signal line; wherein the first sub-touch signal line is electrically connected to the touch electrode; the connecting portion is connected to the first sub-touch signal line through a second through hole, and extends to the inside of the display area in a direction close to the display area.

5. The display panel according to claim 4, characterized in that: The second through hole is located in the non-display area.

6. The display panel according to claim 4, characterized in that: The extension portion includes at least one first extension portion and at least one second extension portion; the first extension portion and the connecting portion extend in the same first direction, and the second extension portion extends along the second direction; Preferably, the first direction and the second direction are nearly perpendicular; Preferably, the first extension portion is located in the display area, and at least part of the second extension portion is located in the display area.

7. The display panel according to claim 1, characterized in that: The touch electrode includes a plurality of touch patterns; an orthographic projection of the first touch signal line on the substrate does not overlap with an orthographic projection of the touch pattern on the substrate.

8. The display panel according to claim 7, characterized in that: The touch layer includes a first sub-touch signal line, and an orthographic projection of the touch electrode on the substrate does not overlap with an orthographic projection of the first sub-touch signal line on the substrate.

9. The display panel according to claim 2, characterized in that: The display panel comprises a pixel definition layer, and a first functional layer is disposed on a side of the second electrode layer and the pixel definition layer facing the substrate; wherein a planar layer is disposed between the first functional layer, the second electrode layer and the pixel definition layer; The first functional layer includes a power signal line; the orthographic projection of the first touch signal line on the substrate is within the orthographic projection of the power signal line on the substrate; Preferably, orthographic projections of part of the power signal lines on the substrate overlap with orthographic projections of part of the first touch signal lines on the substrate; Preferably, the orthographic projection of the power signal line on the substrate does not overlap with the orthographic projection of the first touch signal line on the substrate; Preferably, the power signal line and the first touch signal line are arranged in the same layer; wherein the power signal line and the first touch signal line are electrically isolated.

10. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 9.

Images