Display panel, display device and manufacturing method of display panel

Abstract

The application discloses a display panel, a display device and a manufacturing method of the display panel. The display panel substrate; the light-emitting functional layer is arranged on one side of the substrate; the light-emitting functional layer comprises a plurality of pixels; the touch functional layer is arranged on the side, away from the substrate, of the light-emitting functional layer; the touch functional layer comprises a touch signal line, a first encapsulation layer and a metal shielding layer; the first encapsulation layer is arranged between the touch signal line and the metal shielding layer; the touch signal line is provided with a plurality of notches; the metal shielding layer comprises a plurality of metal shielding portions; the orthographic projection of at least one metal shielding portion on the plane of the substrate overlaps the orthographic projection of at least one notch on the plane of the substrate; the reflectivity of the metal shielding portion is greater than the reflectivity of the first encapsulation layer; and the reflectivity of the touch signal line is greater than the reflectivity of the first encapsulation layer. The display panel, the display device and the manufacturing method of the display panel disclosed by the application reduce the visibility of the screen of death.

Description

Technical Field

[0001] This application relates to the field of touch technology, and more particularly to a display panel, a display device, and a method for manufacturing the display panel. Background Technology

[0002] The touch signal lines within the touch display panel are used to transmit touch signals. To reduce the impact of parasitic capacitance generated by the touch signal lines on the touch signal, notches are created in the touch signal lines. When the touch display panel is off, if the ambient brightness is high, the notches will produce noticeable lines, affecting the observer's viewing experience. Summary of the Invention

[0003] This application provides a display panel, a display device, and a method for manufacturing the display panel, reducing the visibility of textures when the screen is off.

[0004] In a first aspect, embodiments of this application provide a display panel, comprising: a substrate; a light-emitting functional layer disposed on one side of the substrate; the light-emitting functional layer including a plurality of pixels; a touch functional layer disposed on the side of the light-emitting functional layer opposite to the substrate; the touch functional layer including touch signal lines, a first encapsulation layer, and a metal shielding layer; the first encapsulation layer being disposed between the touch signal lines and the metal shielding layer; the orthographic projection of the touch signal lines onto the plane of the substrate and the orthographic projection of the pixels onto the plane of the substrate being spaced apart, and the orthographic projection of the metal shielding layer onto the plane of the substrate and the orthographic projection of the pixels onto the plane of the substrate being spaced apart; the touch signal lines having a plurality of notches, the metal shielding layer including a plurality of metal shielding portions, at least one metal shielding portion overlapping the orthographic projection of at least one notch onto the plane of the substrate; the reflectivity of the metal shielding portion being greater than the reflectivity of the first encapsulation layer, and the reflectivity of the touch signal lines being greater than the reflectivity of the first encapsulation layer.

[0005] According to an embodiment of the first aspect of this application, the reflectivity of the touch signal line is R1, and the reflectivity of the metal shielding part is R2, wherein |R1-R2|≤K·R1, and K is a preset error ratio.

[0006] According to an embodiment of the first aspect of this application, K = 5%.

[0007] According to an embodiment of the first aspect of this application, R1 = R2.

[0008] According to an embodiment of the first aspect of this application, the material of the touch signal line is the same as the material of the metal shield.

[0009] According to an embodiment of the first aspect of this application, the orthographic projection of the metal shielding portion onto the plane where the substrate is located covers the orthographic projection of the notch onto the plane where the substrate is located.

[0010] According to an embodiment of the first aspect of this application, the orthographic projection of the metal shielding portion onto the plane of the substrate and the orthographic projection of the touch signal line onto the plane of the substrate at least partially overlap.

[0011] According to an embodiment of the first aspect of this application, the outline of the metal shielding portion projected onto the plane of the substrate coincides with the outline of the projected onto the plane of the substrate.

[0012] According to an embodiment of the first aspect of this application, the width of the touch signal line is D1, and the width of the metal shielding part is D2, wherein |D1-D2|≤K·D1, and K is a preset error ratio.

[0013] According to an embodiment of the first aspect of this application, K = 5%.

[0014] According to an embodiment of the first aspect of this application, D1 = D2.

[0015] According to an embodiment of the first aspect of this application, a metal shielding layer is disposed on the side of the touch signal line away from the substrate; or, the metal shielding layer is disposed on the side of the touch signal line facing the substrate.

[0016] According to an embodiment of the first aspect of this application, the number of metal shielding portions is equal to the number of notches; or, the orthographic projection of at least one metal shielding portion onto the plane where the substrate is located covers the orthographic projection of multiple notches onto the plane where the substrate is located.

[0017] Secondly, embodiments of this application provide a display device, including the display panel of the first aspect of this application.

[0018] Thirdly, this application provides a method for manufacturing a display panel, which is used to manufacture the display panel of the first aspect embodiment of this application. The method for manufacturing the display panel includes: providing a substrate; fabricating a light-emitting functional layer on one side of the substrate, the light-emitting functional layer including a plurality of pixels; and fabricating a touch functional layer on the side of the light-emitting functional layer opposite to the substrate.

[0019] According to an embodiment of the third aspect of this application, the step of fabricating a touch functional layer includes: fabricating touch signal lines on the side of the light-emitting functional layer away from the substrate; fabricating a first encapsulation layer on the side of the touch signal lines away from the substrate; and fabricating a metal shielding layer on the side of the first encapsulation layer away from the substrate.

[0020] According to an embodiment of the third aspect of this application, the step of fabricating a touch functional layer includes: fabricating a metal shielding layer on the side of the light-emitting functional layer away from the substrate; fabricating a first encapsulation layer on the side of the metal shielding layer away from the substrate; and fabricating touch signal lines on the side of the first encapsulation layer away from the substrate.

[0021] In the display panel, display device, and display panel manufacturing method provided in this application embodiment, a substrate, a light-emitting functional layer, and a touch functional layer are sequentially stacked. Touch signal lines are used to transmit touch signals. The touch signal lines have multiple notches to reduce the impact of parasitic capacitance caused by the touch signal lines on the accuracy of the touch signals. The metal shielding layer includes multiple metal shielding portions. The orthographic projection of at least one metal shielding portion onto the plane of the substrate overlaps with the orthographic projection of at least one notch onto the plane of the substrate, allowing the metal shielding portion to shield the notch. This makes the reflectivity of the display panel at the notch in this application embodiment close to the reflectivity at the touch signal line, reducing the difference in reflectivity to ambient light, thereby weakening the reflective patterns caused by the difference in reflectivity and reducing the visibility of reflective patterns when the display panel is off, thus improving the visual effect of the display panel in this application embodiment. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a display panel according to an embodiment of this application.

[0024] Figure 2 for Figure 1 A partial enlarged view of the display panel in region S of an embodiment of this application.

[0025] Figure 3 for Figure 1 The image shows a partial enlarged view of the S region of the display panel in this embodiment of the application after the metal shielding layer has been removed.

[0026] Figure 4 for Figure 2 A cross-sectional view of the display panel in an embodiment of this application at section AA.

[0027] Figure 5 for Figure 2 A cross-sectional view of the display panel in the embodiment of this application at section BB.

[0028] Figure 6 for Figure 2 Another cross-sectional view of the display panel in the embodiment of this application in section BB.

[0029] Figure 7 for Figure 1Another enlarged view of the display panel in region S of the embodiment of this application.

[0030] Figure 8 for Figure 1 Another enlarged view of the S region of the display panel in the embodiment of this application after the metal shielding layer is hidden.

[0031] Figure 9 for Figure 2 Another cross-sectional view of the display panel in the embodiment of this application in section BB.

[0032] Figure 10 for Figure 1 Another enlarged view of the display panel in region S of the embodiment of this application.

[0033] Figure 11 for Figure 1 Another enlarged view of the display panel in region S of the embodiment of this application.

[0034] Figure 12 for Figure 1 Another enlarged view of the S region of the display panel in the embodiment of this application after the metal shielding layer is hidden.

[0035] Figure 13 This is a schematic diagram of the structure of a display panel according to an embodiment of this application.

[0036] Figure 14 This is a schematic flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application.

[0037] Figure 15 This is a flowchart illustrating step S3 of the method for manufacturing a display panel according to an embodiment of this application.

[0038] Figure 16 This is a flowchart illustrating step S3 of the method for manufacturing a display panel according to an embodiment of this application.

[0039] Figure label:

[0040] 1. Substrate;

[0041] 2. Light-emitting functional layer; 21. Pixel; 22. Array layer; 221. Thin-film transistor;

[0042] 3. Touch function layer; 31. Touch signal line; 311. Notch; 32. First encapsulation layer; 33. Metal shielding layer; 331. Metal shielding part;

[0043] 100. Display device; 200. Display panel;

[0044] A. Pixel group area; DF1, First direction; DF2, Second direction; DD1, First reference direction; DD2, Second reference direction. Detailed Implementation

[0045] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description in order to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples thereof.

[0046] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The embodiments will now be described in detail with reference to the accompanying drawings.

[0047] Relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0048] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0049] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0050] It should be understood that in the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0051] The applicant discovered that in touch-enabled display panels, touch lines are used to transmit touch signals. To reduce obstruction of the light-emitting devices, the touch signal lines are arranged in a grid pattern to allow space for them. However, the grid-like touch signal lines generate parasitic capacitance with the touch electrodes and common electrodes, thus affecting the accuracy of the touch signal. To reduce parasitic capacitance, notches are added to the grid-like touch signal lines to partially interrupt them. When the display panel is off, if the ambient light is high, the display panel will reflect ambient light. Since the reflectivity of the touch signal lines is significantly greater than that of the encapsulation layer, observers will see a texture caused by the difference in reflectivity between the notched ends of the touch signal lines and the encapsulation layer. Considering that multiple notches are arranged in a straight line, observers will see an "I"-shaped texture, affecting their visual perception.

[0052] Based on the above analysis, the applicant proposes a display panel, a display device, and a method for manufacturing the display panel. The display panel includes a substrate, a light-emitting functional layer, and a touch functional layer. The substrate, the light-emitting functional layer, and the touch functional layer are stacked sequentially. Touch signal lines are used to transmit touch signals. The touch signal lines have multiple notches to reduce the impact of parasitic capacitance caused by the touch signal lines on the accuracy of the touch signals. A metal shielding layer includes multiple metal shielding portions. The orthographic projection of at least one metal shielding portion onto the plane of the substrate overlaps with the orthographic projection of at least one notch onto the plane of the substrate, allowing the metal shielding portion to shield the notch. This makes the reflectivity of the display panel at the notch in this embodiment of the application close to the reflectivity at the touch signal line, reducing the difference in reflectivity to ambient light, thereby weakening the reflective patterns caused by the difference in reflectivity and reducing the visibility of reflective patterns when the display panel is off, thus improving the visual effect of the display panel in this embodiment of the application.

[0053] Figure 1 This is a schematic diagram of the structure of a display panel according to an embodiment of this application. Figure 2 for Figure 1 A partial enlarged view of the display panel in region S of an embodiment of this application. Figure 3 for Figure 1 The image shows a partial enlarged view of the S region of the display panel in this embodiment of the application after the metal shielding layer has been removed.

[0054] Figure 4 for Figure 2A cross-sectional view of the display panel in an embodiment of this application at section AA. Figure 5 for Figure 2 A cross-sectional view of the display panel in the embodiment of this application at section BB.

[0055] Please see Figures 1 to 5 This application provides a display panel, including: a substrate 1; a light-emitting functional layer 2 disposed on one side of the substrate 1; the light-emitting functional layer 2 including a plurality of pixels 21; and a touch functional layer 3 disposed on the side of the light-emitting functional layer 2 opposite to the substrate 1; the touch functional layer 3 including touch signal lines 31, a first encapsulation layer 32, and a metal shielding layer 33; the first encapsulation layer 32 is disposed between the touch signal lines 31 and the metal shielding layer 33; the orthographic projection of the touch signal lines 31 onto the plane of the substrate 1 and the orthographic projection of the pixels 21 onto the plane of the substrate 1 are... The metal shielding layer 33 is spaced apart from the orthographic projection of the pixel 21 on the plane of the substrate 1. The touch signal line 31 is provided with a plurality of notches 311. The metal shielding layer 33 includes a plurality of metal shielding portions 331. The orthographic projection of at least one metal shielding portion 331 on the plane of the substrate 1 overlaps with the orthographic projection of at least one notch 311 on the plane of the substrate 1. The reflectivity of the metal shielding portion 331 is greater than that of the first encapsulation layer 32. The reflectivity of the touch signal line 31 is greater than that of the first encapsulation layer 32.

[0056] It should be noted that the display panel in this embodiment of the application, in addition to being used for display and illumination, also has a touch function.

[0057] The substrate 1 can be formed from polymeric materials such as glass, polyimide (PI), polycarbonate (PC), polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyaryl compounds (PAR), or glass fiber reinforced plastic (FRP). The substrate 1 can be transparent, translucent, or opaque. In embodiments of this application, the substrate 1 can also be a flexible substrate 1, formed from a thin polymer, such as polyimide.

[0058] A light-emitting functional layer 2 is disposed on one side of the substrate 1 for displaying light emission. The light-emitting functional layer 2 includes multiple pixels 21, each of which can emit light independently. The multiple pixels 21 are combined to realize the display light emission of the display panel in this embodiment. In this embodiment, the light-emitting functional layer 2 includes a light-emitting device, which corresponds to a pixel 21. The light-emitting device can be an organic light-emitting diode (OLED), a micro-LED, or a mini-LED. For ease of explanation, this embodiment uses an organic light-emitting diode as an example. The light-emitting device includes an anode, a pixel 21 definition layer covering the anode, an organic light-emitting layer, and a cathode. The anode, organic light-emitting layer, and cathode are arranged sequentially along the direction away from the substrate 1.

[0059] It is understood that the light-emitting functional layer 2 also includes an array layer 22, which includes multiple thin-film transistors 221 (TFTs). These TFTs constitute a pixel 21 circuit for controlling the light emission of the light-emitting device. This application embodiment uses a top-gate type TFT 221 as an example for structural description. The TFT 221 includes an active layer, comprising a source region and a drain region formed by doping with N-type or P-type impurity ions, and a channel region between the source and drain regions; a gate insulating layer located on the active layer; and the gate of the TFT 221 located on the gate insulating layer.

[0060] The touch function layer 3 is disposed on the side of the light-emitting function layer 2 facing away from the substrate 1 and is used for touch detection. It is understood that the touch function layer 3 includes touch electrodes in addition to the touch signal line 31. The touch signal line 31 is electrically connected to the touch electrodes to conduct touch signals. The touch signal line 31 has an opening, and the orthographic projection of the pixel 21 onto the plane of the substrate 1 lies within the orthographic projection of the opening onto the plane of the substrate 1. That is, the orthographic projection of the touch signal line 31 onto the plane of the substrate 1 and the orthographic projection of the pixel 21 onto the plane of the substrate 1 are spaced apart, so that the touch signal line 31 obstructs the pixel 21 less, thereby enabling the display panel of this embodiment to have good brightness.

[0061] The touch signal line 31 is used to conduct touch signals. The touch signal line 31 has multiple notches 311 to reduce the influence of parasitic capacitance caused by the touch signal line 31 on the touch signal. Given that the reflectivity of the display panel to external light at the touch signal line 31 is approximately equal to the reflectivity of the touch signal line 31, and at the notches 311, the reflectivity of the display panel to external light is approximately equal to the reflectivity of the first encapsulation layer 32. The touch signal line 31 is typically made of metal, and the reflectivity of the metal shielding portion 331 is greater than the reflectivity of the first encapsulation layer 32. Therefore, the reflectivity of the display panel at the notches 311 is less than the reflectivity at the touch signal line 31, resulting in a reflective pattern on the display panel of this embodiment.

[0062] The first encapsulation layer 32 is disposed between the touch signal line 31 and the metal shielding layer 33 to isolate the electrical connection between the touch signal line 31 and the metal shielding layer 33. The touch signal line 31 can be located on the side of the metal shielding layer 33 close to the substrate 1, or on the side of the metal shielding layer 33 away from the substrate 1.

[0063] In this embodiment, the touch function layer 3 further includes a metal shielding layer 33. The orthographic projection of the metal shielding layer 33 onto the plane of the substrate 1 and the orthographic projection of the pixel 21 onto the plane of the substrate 1 are spaced apart, thereby reducing the occlusion of the pixel 21 by the metal shielding layer 33, thus enabling the display panel of this embodiment to have sufficient brightness. The orthographic projection of the metal shielding portion 331 onto the plane of the substrate 1 overlaps with the orthographic projection of the notch 311 onto the plane of the substrate 1. Since the metal shielding portion 331 is made of metal, its reflectivity is generally greater than that of the first encapsulation layer 32. Therefore, the reflectivity of the display panel at the notch 311 in this embodiment is approximately equal to the reflectivity of the metal shielding portion 331. Since both the metal shielding part 331 and the touch signal line 31 are made of metal, the reflectivity of the metal shielding part 331 is close to that of the touch signal line 31. This reduces the difference between the reflectivity of the display panel at the notch 311 and the reflectivity at the touch signal line 31 in this embodiment of the application. Consequently, it reduces the difference in the ability to reflect ambient light, thereby weakening the reflective patterns caused by the difference in reflectivity and reducing the visibility of the reflective patterns of the display panel when the screen is off, thus improving the visual effect of the display panel in this embodiment of the application.

[0064] It should be noted that, in this embodiment, the material of the metal shielding layer 33 and the material of the touch signal line 31 can be the same metal material. In this case, the reflectivity of the metal shielding part 331 is equal to the reflectivity of the touch signal line 31. Alternatively, the material of the metal shielding layer 33 and the material of the touch signal line 31 can be different metal materials. In this case, the reflectivity of the metal shielding part 331 and the reflectivity of the touch signal line 31 can be unequal or equal.

[0065] In this embodiment, a metal shielding portion 331 may be provided at at least a portion of the notches 311. When a metal shielding portion 331 is provided at a portion of the notches 311, there may be notches 311 without a metal shielding portion 331. Because there are notches 311 with metal shielding portions 331, the visibility of reflective patterns on the display panel of this embodiment can be reduced when the screen is off, thereby improving the visual effect of the display panel of this embodiment. In this embodiment, metal shielding portions 331 may also be provided at all the notches 311. By reducing the difference in reflectivity caused by each notch 311, the visibility of reflective patterns on the display panel of this embodiment when the screen is off can be further reduced. For ease of explanation, this embodiment will be described using the example of providing a metal shielding portion 331 at each notch 311.

[0066] Figure 6 for Figure 2 Another cross-sectional view of the display panel in the embodiment of this application in section BB.

[0067] Further, please refer to Figure 6 and combined Figure 5 The metal shielding layer 33 is disposed on the side of the touch signal line 31 away from the substrate 1; or, the metal shielding layer 33 is disposed on the side of the touch signal line 31 facing the substrate 1.

[0068] In this embodiment, the metal shielding layer 33 is disposed on the side of the touch signal line 31 away from the substrate 1. When manufacturing the display panel of this embodiment, the touch signal line 31 is manufactured first, then the first insulating layer is manufactured, and then the metal shielding layer 33 is manufactured.

[0069] Alternatively, the metal shielding layer 33 is disposed on the side of the touch signal line 31 facing the substrate 1. When manufacturing the display panel of this embodiment, the metal shielding layer 33 is manufactured first, then the first insulating layer is manufactured, and then the touch signal line 31 is manufactured.

[0070] Further, continue to participate Figure 2 and Figure 3 The display panel in this embodiment further includes: a plurality of pixel group areas A arranged in an array, wherein a plurality of pixels 21 are located in a pixel group area A; within the pixel group area A, a plurality of notches 311 are arranged along a first direction DF1.

[0071] Multiple pixels 21 are located within a pixel group area A. The colors of the pixels 21 within the same pixel group area A can be different, and they are used together for display illumination in this embodiment. The arrangement of pixels 21 within different pixel group areas A can be the same. For ease of explanation, this embodiment uses a pixel group A comprising red, green, and blue pixels as an example. In this case, one red pixel 21, one blue pixel 21, and two green pixels 21 are located within the same pixel group area A, and the four pixels 21 are arranged in an array along the first reference direction DD1 and the second reference direction DD2. Multiple notches 311 are located within the same pixel group area A and are arranged in a column along the first direction DF1. The first direction DF1 intersects the first reference direction DD1 and also intersects the second reference direction DD2. In this case, within a pixel group area A, the multiple notches 311 are arranged in a line; that is, the display panel in this embodiment adopts a single-line notch 311 form.

[0072] Figure 7 for Figure 1 Another enlarged view of the display panel in region S of the embodiment of this application. Figure 8 for Figure 1 Another enlarged view of the S region of the display panel in the embodiment of this application after the metal shielding layer is hidden.

[0073] Optionally, please refer to Figure 7 and Figure 8 The display panel of this application embodiment further includes: a plurality of pixel group areas A arranged in an array, and a plurality of pixels 21 located in a pixel group area A; within the pixel group area A, a portion of the notches 311 are arranged along a first direction DF1 to form a column of notches 311, the number of columns of notches 311 is two, the two columns of notches 311 are arranged along a second direction DF2, the first direction DF1 and the second direction DF2 intersect, and the orthographic projection of the metal shielding part 331 on the plane where the substrate 1 is located covers the orthographic projection of the notches 311 on the plane where the substrate 1 is located.

[0074] Multiple pixels 21 are located within a pixel group area A. The colors of the multiple pixels 21 within the same pixel group area A can be different, and they are used together for display illumination in this embodiment. The arrangement of pixels 21 within different pixel group areas A can be the same. For ease of explanation, this embodiment uses a pixel group A comprising red, green, and blue pixels as an example. In this case, one red pixel 21, one blue pixel 21, and two green pixels 21 are located within the same pixel group area A, and the four pixels 21 are arranged in an array along the first reference direction DD1 and the second reference direction DD2. Multiple notches 311 are located within the same pixel group area A and are arranged in a column of notches 311 along the first direction DF1. The first direction DF1 intersects with the first reference direction DD1 and also with the second reference direction DD2. There are two columns of notches 311, arranged along the second direction DF2. The second direction DF2 is perpendicular to the first square and intersects with both the first and second reference directions DD1 and DD2. At this time, within a pixel group area A, multiple notches 311 are arranged in a line, that is, the display panel of this embodiment adopts the form of double-line notches 311. Further, the reflectivity of the touch signal line 31 is R1, and the reflectivity of the metal shielding part 331 is R2, where |R1-R2|≤K·R1, and K is a preset error ratio.

[0075] The difference between the reflectivity R1 of the touch signal line 31 and the reflectivity R2 of the metal shielding portion 331 reflects the difference in reflectivity of the display panel in this embodiment between the area corresponding to the touch signal line 31 and the area corresponding to the notch 311, thereby reflecting the difference in the ability of the display panel to reflect external light between the area corresponding to the touch signal line 31 and the area corresponding to the notch 311. In this embodiment, the absolute value of the difference between the reflectivity R1 of the touch signal line 31 and the reflectivity R2 of the metal shielding portion 331 is less than or equal to a certain proportion of the reflectivity R1 of the touch signal line 31, which is a preset error proportion K. At this time, it is considered that the difference in reflectivity of the display panel in this embodiment between the area corresponding to the touch signal line 31 and the area corresponding to the notch 311 is small enough, and the ability to reflect external light is close enough. This can weaken the reflective patterns caused by the difference in reflectivity, reduce the visibility of the reflective patterns of the display panel when the screen is off, and improve the visual effect of the display panel in this embodiment.

[0076] Further reading Figure 2 and Figure 3The preset error ratio K = 5%, that is, the absolute value of the difference between the reflectivity R1 of the touch signal line 31 and the reflectivity R2 of the metal shielding part 331 is less than or equal to 5% of the reflectivity R1 of the touch signal line 31. It can be considered that the difference in reflectivity between the display panel of this embodiment and the area corresponding to the touch signal line 31 and the area corresponding to the notch 311 is small enough, and the reflectivity of the external light is close enough that the observer can hardly perceive the reflective texture caused by the difference in reflectivity, which significantly improves the visual effect of the display panel of this embodiment.

[0077] Further reading Figure 2 and Figure 3 The reflectivity R1 of the touch signal line 31 is equal to the reflectivity R2 of the metal shielding portion 331. In this embodiment, the reflectivity of the display panel in the area corresponding to the touch signal line 31 and the area corresponding to the notch 311 is almost identical, and the display panel in this embodiment produces almost no noticeable reflective patterns when the screen is off. It is understood that the equal reflectivity R1 of the touch signal line 31 and the reflectivity R2 of the metal shielding portion 331 does not mean that the material of the touch signal line 31 is the same as the material of the metal shielding portion 331; different materials can also have equal reflectivity.

[0078] Further reading Figure 2 and Figure 3 The material of the touch signal line 31 is the same as that of the metal shielding part 331. Therefore, the reflectivity R1 of the touch signal line 31 is equal to the reflectivity R2 of the metal shielding part 331. In this embodiment, the reflectivity of the display panel in the area corresponding to the touch signal line 31 and in the area corresponding to the notch 311 is almost not significantly different. The display panel in this embodiment will hardly produce obvious reflective patterns when the screen is off.

[0079] Further reading Figures 2 to 5 The orthographic projection of the metal shielding portion 331 onto the plane of the substrate 1 covers the orthographic projection of the notch 311 onto the plane of the substrate 1. In other words, the metal shielding portion 331 blocks the entire notch 311, so that the reflectivity of the display panel in this embodiment of the present application at various locations within the area corresponding to the notch 311 can be approximated by the reflectivity of the metal shielding portion 331. Therefore, by reducing the difference between the reflectivity R1 of the touch signal line 31 and the reflectivity R2 of the metal shielding portion 331, the difference in the reflectivity of the display panel in this embodiment of the present application to external light within the area corresponding to the touch signal line 31 and within the area corresponding to the notch 311 can be reduced. This weakens the reflective patterns caused by the difference in reflectivity, reducing the visibility of the reflective patterns of the display panel in this embodiment of the present application when the screen is off.

[0080] Further reading Figures 2 to 5 The orthographic projection of the metal shielding portion 331 onto the plane of the substrate 1 at least partially overlaps with the orthographic projection of the touch signal line 31 onto the plane of the substrate 1. In other words, the metal shielding portion 331 must shield a portion of the touch signal line 31. When fabricating the metal shielding layer 33, the portion of the metal shielding portion 331 that shields the touch signal line 31 can be used as redundancy to reduce the possibility that the metal shielding portion 331 may not completely shield the gap 311 due to process errors.

[0081] Figure 9 for Figure 2 Another cross-sectional view of the display panel in the embodiment of this application in section BB.

[0082] Please see Figure 9 It should be noted that in this embodiment, the notch 311 is equivalent to cutting a certain section of the touch signal line 31 into two parts. The metal shielding part 331 should not be electrically connected to both parts. That is to say, the metal shielding part 331 may not be electrically connected to both parts of the touch signal line 31 at the same time, or the metal shielding part may be electrically connected to one part of the touch signal line 31.

[0083] Further reading Figures 2 to 5 The outline of the notch 311, projected onto the plane of the substrate 1 by the metal shielding portion 331, coincides with the outline of the notch 311 projected onto the plane of the substrate 1. That is, the metal shielding portion 331 just covers the notch 311, and a portion of the edge of the metal shielding portion 331 is aligned with the edge of the notch 311. When the patterning accuracy of the metal shielding layer 33 is high enough, the edge of the metal shielding portion 331 can be aligned with the edge of the notch 311, thereby reducing the material used in the metal shielding portion 331 and reducing the cost of the display panel in this embodiment.

[0084] Figure 10 for Figure 1 Another enlarged view of the display panel in region S of the embodiment of this application.

[0085] Further, please refer to Figure 10 The width of the touch signal line 31 is D1, and the width of the metal shielding part 331 is D2, where |D1-D2|≤K·D1, and K is a preset error ratio.

[0086] In this embodiment, the absolute value of the difference between the width D1 of the touch signal line 31 and the width D2 of the metal shielding portion 331 is less than or equal to a certain proportion of the width D1 of the touch signal line 31, which is a preset error proportion K. At this time, it is considered that the width D1 of the touch signal line 31 and the width D2 of the metal shielding portion 331 are sufficiently close. Considering that the reflectivity R1 of the touch signal line 31 and the reflectivity R2 of the metal shielding portion 331 are close, the reflected light flux of the display panel in this embodiment is similar in the area corresponding to the touch signal line 31 and in the area corresponding to the notch 311. In other words, the reflectivity of the display panel in this embodiment is similar in the area corresponding to the touch signal line 31 and in the area corresponding to the notch 311, which can weaken the reflective texture caused by the difference in reflectivity and reduce the visibility of the reflective texture when the display panel is off, thereby improving the visual effect of the display panel in this embodiment.

[0087] Further reading Figure 10 The preset error ratio K = 5%, that is, the absolute value of the difference between the width D1 of the touch signal line 31 and the width D2 of the metal shielding part 331 is less than or equal to 5% of the reflectivity R1 of the touch signal line 31. It can be considered that the difference in the reflectivity of the display panel of this embodiment to external light in the area corresponding to the touch signal line 31 and the area corresponding to the notch 311 is small enough that the observer can hardly perceive the reflective texture caused by the difference in reflectivity, which significantly improves the visual effect of the display panel of this embodiment.

[0088] Further reading Figure 10 The width D1 of the touch signal line 31 is equal to the width D2 of the metal shielding part 331. In this embodiment, the display panel has almost no significant difference in the ability to reflect external light in the area corresponding to the touch signal line 31 and the area corresponding to the notch 311. The display panel of this embodiment will hardly produce obvious reflective patterns when the screen is off.

[0089] Figure 11 for Figure 1 Another enlarged view of the display panel in region S of the embodiment of this application. Figure 12 for Figure 1 Another enlarged view of the S region of the display panel in the embodiment of this application after the metal shielding layer is hidden.

[0090] Further, please refer to Figure 11 and Figure 12 and combined Figure 2 and Figure 3The number of metal blocking portions 331 is equal to the number of notches 311; or, the orthographic projection of at least one metal blocking portion 331 onto the plane of the substrate 1 covers the orthographic projection of multiple notches 311 onto the plane of the substrate 1.

[0091] In this embodiment, the number of metal blocking portions 331 is equal to the number of notches 311, meaning that each metal blocking portion 331 blocks one notch 311. When the reflectivity R1 of the touch signal line 31 is close to the reflectivity R2 of the metal blocking portion 331, the difference in reflectivity between the display panel in the area corresponding to the touch signal line 31 and the area corresponding to the notch 311 is sufficiently small, and the reflectivity of external light is sufficiently similar. This weakens the reflective patterns caused by the difference in reflectivity, reduces the visibility of reflective patterns when the display panel is off, and improves the visual effect of the display panel. Therefore, when the reflectivity R1 of the touch signal line 31 is close to the reflectivity R2 of the metal blocking portion 331, each metal blocking portion 331 can block one notch 311.

[0092] In this embodiment, the orthographic projection of at least one metal shielding portion 331 onto the plane of the substrate 1 covers the orthographic projection of multiple notches 311 onto the plane of the substrate 1. That is, one metal shielding portion 331 shields multiple notches 311, and the shielded portion includes the touch signal lines 31. When the reflectivity R1 of the touch signal lines 31 is slightly less than the reflectivity R2 of the metal shielding portion 331, the difference in reflectivity between the area corresponding to the touch signal lines 31 and the area corresponding to the notches 311 in the display panel of this embodiment is sufficiently small, and the reflectivity of external light is sufficiently similar. This weakens the reflective patterns caused by the difference in reflectivity, reduces the visibility of reflective patterns when the display panel is off, and improves the visual effect of the display panel. Therefore, when the reflectivity R1 of the touch signal lines 31 is slightly less than the reflectivity R2 of the metal shielding portion 331, one metal shielding portion 331 can shield multiple notches 311.

[0093] Figure 13 This is a schematic diagram of the structure of a display panel according to an embodiment of this application.

[0094] Please see Figure 13 This application also provides a display device 100, including the display panel 200 of the foregoing embodiments of this application. The display device 100 provided in this application can be any product or component with display functionality, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator. It is understood that the display device 100 in this application, in addition to its display and light emission functions, also has touch functionality.

[0095] Figure 14 This is a schematic flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application.

[0096] Please see Figure 14 This application also provides a method for manufacturing a display panel 200, which is used to manufacture the display panel 200 of the aforementioned embodiments of this application.

[0097] The method for manufacturing the display panel 200 according to this application embodiment includes:

[0098] Step S1: Provide substrate 1.

[0099] The finished product of substrate 1 can be obtained directly, or substrate 1 can be manufactured directly.

[0100] Step S2: Create the luminescent functional layer 2.

[0101] A light-emitting functional layer 2 is fabricated on one side of the substrate 1. It is understood that the light-emitting functional layer 2 includes an array layer 22 and multiple pixels 21. Each pixel 21 can emit light independently. The multiple pixels 21 are combined to realize the display light emission of the display panel 200 in this embodiment of the application. The array layer 22 includes multiple thin film transistors 221. The multiple thin film transistors 221 constitute the pixel 21 circuit and are used to control the light emission of the light-emitting device.

[0102] Step S3: Create the touch function layer 3.

[0103] A touch function layer 3 is formed on the side of the light-emitting functional layer 2 facing away from the substrate 1. In addition to touch signal lines 31, the touch function layer 3 also includes touch electrodes. The touch signal lines 31 are electrically connected to the touch electrodes to conduct touch signals. The touch signal lines 31 have openings, and the orthographic projection of the pixel 21 onto the plane of the substrate 1 lies within the orthographic projection of the opening onto the plane of the substrate 1. The touch function layer 3 also includes a metal shielding layer 33. The orthographic projection of the metal shielding layer 33 onto the plane of the substrate 1 and the orthographic projection of the pixel 21 onto the plane of the substrate 1 are spaced apart to reduce the occlusion of the pixel 21 by the metal shielding layer 33. The orthographic projection of the metal shielding portion 331 onto the plane of the substrate 1 overlaps with the orthographic projection of the notch 311 onto the plane of the substrate 1 to shield the notch 311, thereby reducing the visibility of the reflective texture of the display panel 200 in this embodiment when the screen is off. The touch function layer 3 also includes a first encapsulation layer 32, which is disposed between the touch signal line 31 and the metal shielding layer 33 to isolate the electrical connection between the touch signal line 31 and the metal shielding layer 33.

[0104] Figure 15 This is a flowchart illustrating step S3 of the method for manufacturing a display panel according to an embodiment of this application.

[0105] Further, please refer to Figure 15Step S3 includes:

[0106] Step S3.1: Make touch signal line 31.

[0107] A packaging layer can be fabricated first by chemical vapor deposition (CVD), and then the touch signal line 31 can be fabricated. The touch signal line 31 has multiple notches 311.

[0108] Step S3.2: Create the first encapsulation layer 32.

[0109] On the side of the touch signal line 31 away from the substrate 1, an encapsulation layer is formed by chemical vapor deposition to form the first encapsulation layer 32.

[0110] Step S3.3: Create a metal shielding layer 33.

[0111] On the side of the first encapsulation layer 32 facing away from the substrate 1, a metal shielding layer 33 is formed, and a metal shielding portion 331 is patterned such that the orthographic projection of the metal shielding portion 331 onto the plane of the substrate 1 overlaps with the orthographic projection of the notch 311 onto the plane of the substrate 1. In other words, the metal shielding portion 331 shields the notch 311. It is understood that on the side of the metal shielding layer 33 facing away from the substrate 1, another encapsulation layer can be formed by chemical vapor deposition. In this embodiment, the metal shielding layer 33 is disposed on the side of the touch signal line 31 facing away from the substrate 1.

[0112] Figure 16 This is a flowchart illustrating step S3 of the method for manufacturing a display panel according to an embodiment of this application.

[0113] Further, please refer to Figure 16 Step S3 includes:

[0114] Step S3.1: Fabricate the metal shielding layer 33. Touch signal line 31.

[0115] A metal shielding layer 33 is fabricated and patterned to form a metal shielding part 331.

[0116] Step S3.2: Create the first encapsulation layer 32.

[0117] On the side of the touch signal line 31 away from the substrate 1, an encapsulation layer is formed by chemical vapor deposition to form the first encapsulation layer 32.

[0118] Step S3.3: Make touch signal line 31.

[0119] On the side of the first encapsulation layer 32 facing away from the substrate 1, a touch signal line 31 is fabricated. The touch signal line 31 has multiple notches 311 so that the orthographic projection of the metal shielding portion 331 on the plane of the substrate 1 overlaps with the orthographic projection of the notch 311 on the plane of the substrate 1. In other words, the metal shielding portion 331 shields the notch 311. In this embodiment, the metal shielding layer 33 is disposed on the side of the touch signal line 31 facing away from the substrate 1.

[0120] In summary, this application provides a display panel, a display device, and a method for manufacturing the display panel. The display panel includes a substrate, a light-emitting functional layer, and a touch functional layer. The substrate, the light-emitting functional layer, and the touch functional layer are stacked sequentially. Touch signal lines are used to transmit touch signals. The touch signal lines have multiple notches to reduce the impact of parasitic capacitance caused by the touch signal lines on the accuracy of the touch signals. The metal shielding layer includes multiple metal shielding portions. The orthographic projection of at least one metal shielding portion on the plane of the substrate overlaps with the orthographic projection of at least one notch on the plane of the substrate, so that the metal shielding portion can shield the notch. This makes the reflectivity of the display panel at the notch in this application embodiment close to the reflectivity at the touch signal line, reducing the difference in reflectivity to ambient light, thereby weakening the reflective patterns caused by the difference in reflectivity, reducing the visibility of reflective patterns when the display panel is off, and improving the visual effect of the display panel in this application embodiment.

[0121] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A display panel, characterized in that, include: Substrate, and; A light-emitting functional layer is disposed on one side of the substrate; the light-emitting functional layer includes a plurality of pixels; A touch function layer is disposed on the side of the light-emitting function layer opposite to the substrate. The touch function layer includes touch signal lines, a first encapsulation layer, and a metal shielding layer. The first encapsulation layer is disposed between the touch signal lines and the metal shielding layer. The orthographic projection of the touch signal lines onto the plane of the substrate and the orthographic projection of the pixels onto the plane of the substrate are spaced apart. The orthographic projection of the metal shielding layer onto the plane of the substrate and the orthographic projection of the pixels onto the plane of the substrate are also spaced apart. The touch signal lines have multiple notches, and the metal shielding layer includes multiple metal shielding portions. The orthographic projection of at least one metal shielding portion onto the plane of the substrate overlaps with the orthographic projection of at least one notch onto the plane of the substrate. The reflectivity of the metal shielding portion is greater than the reflectivity of the first encapsulation layer, and the reflectivity of the touch signal lines is greater than the reflectivity of the first encapsulation layer.

2. The display panel according to claim 1, characterized in that, The reflectivity of the touch signal line is R1, and the reflectivity of the metal shielding part is R2, where |R1-R2|≤K·R1, and K is a preset error ratio; Preferably, K = 5%; Preferably, R1 = R2; Preferably, the material of the touch signal line is the same as the material of the metal shield.

3. The display panel according to claim 1, characterized in that, The orthographic projection of the metal shielding portion onto the plane where the substrate is located covers the orthographic projection of the notch onto the plane where the substrate is located; Preferably, the orthographic projection of the metal shielding portion onto the plane of the substrate and the orthographic projection of the touch signal line onto the plane of the substrate at least partially overlap; Preferably, the outline of the metal shielding portion projected onto the plane of the substrate coincides with the outline of the notch projected onto the plane of the substrate.

4. The display panel according to claim 1, characterized in that, The width of the touch signal line is D1, and the width of the metal shielding part is D2, wherein |D1-D2|≤K·D1, and K is a preset error ratio; Preferably, K = 5%; Preferably, D1 = D2.

5. The display panel according to claim 1, characterized in that, The metal shielding layer is disposed on the side of the touch signal line away from the substrate; Alternatively, the metal shielding layer may be disposed on the side of the touch signal line facing the substrate.

6. The display panel according to claim 1, characterized in that, The number of the metal blocking portions is equal to the number of the notches; Alternatively, the orthographic projection of at least one of the metal shielding portions onto the plane where the substrate is located covers the orthographic projection of the plurality of the notches onto the plane where the substrate is located.

7. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 6.

8. A method for manufacturing a display panel, characterized in that, The method for manufacturing the display panel is used to manufacture the display panel according to any one of claims 1 to 6; The method for manufacturing the display panel includes: Provide the substrate; On one side of the substrate, the light-emitting functional layer is fabricated, and the light-emitting functional layer includes a plurality of pixels; The touch function layer is fabricated on the side of the light-emitting functional layer that faces away from the substrate.

9. The method for manufacturing a display panel according to claim 8, characterized in that, The steps for creating the touch function layer include: The touch signal line is fabricated on the side of the light-emitting functional layer opposite to the substrate; The first encapsulation layer is formed on the side of the touch signal line opposite to the substrate; The metal shielding layer is formed on the side of the first encapsulation layer opposite to the substrate.

10. The method for manufacturing a display panel according to claim 8, characterized in that, The steps for creating the touch function layer include: The metal shielding layer is fabricated on the side of the light-emitting functional layer that is opposite to the substrate; The first encapsulation layer is formed on the side of the metal shielding layer that faces away from the substrate; The touch signal line is fabricated on the side of the first encapsulation layer opposite to the substrate.

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