Display panel, display device and touch function layer

Abstract

The application discloses a display panel, a display device and a touch function layer. The display panel comprises a substrate, a light-emitting function layer arranged on one side of the substrate and comprising pixels, and a touch function layer arranged on a side of the light-emitting function layer away from the substrate. The touch function layer comprises a touch signal line, a high-reflection film and an encapsulation layer. The touch signal line is arranged at intervals between the orthographic projection of the substrate and the orthographic projection of the pixels. The touch signal line is provided with a notch. The high-reflection film is located on a side of the touch signal line away from the substrate and comprises a high-reflection part. The high-reflection part is arranged at intervals between the orthographic projection of the substrate and the orthographic projection of the pixels, and the orthographic projection of the high-reflection part on the substrate at least partially overlaps the orthographic projection of the notch on the substrate. The high-reflection part is insulatively connected with the touch signal line. The encapsulation layer is arranged on a side of the high-reflection film away from the substrate, and the reflectivity of the encapsulation layer is smaller than that of the high-reflection film. The application can reduce the visibility of lines when the screen is turned off and improve the visual effect.

Description

Technical Field

[0001] This application relates to the field of touch technology, and in particular to a display panel, a display device, and a touch function layer. 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 touch function layer that can reduce the visibility of textures when the screen is off.

[0004] A first aspect provides a display panel, comprising: a substrate; and: 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 high-reflectivity film, and an encapsulation layer, wherein 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 touch signal lines are provided with a plurality of notches; at least a portion of the high-reflectivity film is located on the side of the touch signal lines opposite to the substrate; the high-reflectivity film includes at least one high-reflectivity portion, wherein the orthographic projection of the high-reflectivity portion onto the plane of the substrate and the orthographic projection of the pixels onto the plane of the substrate are spaced apart, and the orthographic projection of the at least one high-reflectivity portion onto the plane of the substrate and the orthographic projection of the at least one notch onto the plane of the substrate at least partially overlap; the high-reflectivity portion is insulated from the touch signal lines; the encapsulation layer is disposed on the side of the high-reflectivity film opposite to the substrate, and the reflectivity of the encapsulation layer is less than the reflectivity of the high-reflectivity film.

[0005] According to an embodiment of the first aspect of this application, the touch signal line includes a plurality of touch sub-segments, a notch is located in the touch sub-segments, and the extension direction of the high reflectivity portion is parallel to the extension direction of the touch sub-segments.

[0006] According to an embodiment of the first aspect of this application, the width of the high reflectivity portion is greater than or equal to the width of the touch sub-segment.

[0007] According to an embodiment of the first aspect of this application, the number of notches is the same as the number of high reflectivity portions, and they correspond one-to-one.

[0008] According to an embodiment of the first aspect of this application, the reflectivity of the high reflectivity film is R1, the reflectivity of the touch signal line is R2, the width of the high reflectivity section is D1, and the width of the touch sub-segment is D2. R1 / R2 is negatively correlated with D1 / D2. Ideally, D1*R1 = D2*R2, thus achieving an equivalent unit area reflectivity.

[0009] According to an embodiment of the first aspect of this application, the width of the high reflectivity film is D1, and the width of the touch signal line is D2, wherein 2 / 3 ≤ D1 / D2 ≤ 2.

[0010] According to an embodiment of the first aspect of this application, 0.8 ≤ D1 / D2 ≤ 1.25.

[0011] According to an embodiment of the first aspect of this application, the orthographic projection of a plurality of notches onto the plane of the substrate lies within the orthographic projection of a high reflectivity portion onto the plane of the substrate.

[0012] According to an embodiment of the first aspect of this application, the number of high reflectivity portions is one, and the orthographic projection of the touch signal line on the plane of the substrate and the orthographic projection of the multiple notches on the plane of the substrate are both located within the orthographic projection of the high reflectivity portion on the plane of the substrate.

[0013] According to an embodiment of the first aspect of this application, the reflectivity of the high reflectivity film is R1, and the reflectivity of the touch signal line is R2, wherein 0.4≤R1≤1 and 0.4≤R2≤1.

[0014] According to an embodiment of the first aspect of this application, 0.8 ≤ R1 / R2 ≤ 1.25.

[0015] According to an embodiment of the first aspect of this application, it further includes: a plurality of pixel group regions arranged in an array, wherein a plurality of pixels are located in a pixel group region; within the pixel group region, a plurality of notches are arranged along a first direction, wherein the orthographic projection of the high reflectivity portion on the plane where the substrate is located covers the orthographic projection of the notches on the plane where the substrate is located.

[0016] According to an embodiment of the first aspect of this application, it further includes: a plurality of pixel group regions arranged in an array, wherein a plurality of pixels are located in a pixel group region; within the pixel group region, a portion of the notches are arranged along a first direction to form a notch column, the number of notch columns is two, the two notch columns are arranged along a second direction, the first direction and the second direction intersect, and the orthographic projection of the high reflectivity portion on the plane where the substrate is located covers the orthographic projection of the notch on the plane where the substrate is located.

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

[0018] Thirdly, embodiments of this application provide a touch function layer, which is used in the display panel of the first aspect of this application.

[0019] In the display panel, display device, and touch function layer provided in this application embodiment, the substrate, light-emitting function layer, and touch function layer are stacked sequentially. Touch signal lines are used to transmit touch signals, and 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 high-reflectivity portion of the high-reflectivity film covers the notches of the touch signal lines, and an encapsulation layer covers both the high-reflectivity film and the touch signal lines. The reflectivity of the encapsulation layer is lower than that of the high-reflectivity film, thereby enabling the high-reflectivity portion to block the notches of the touch signal lines. At the notches, the difference in reflectivity between the encapsulation layer and the touch signal lines is compensated, thereby weakening the reflective patterns caused by the reflectivity difference and reducing the visibility of reflective patterns in the display panel of this application embodiment when the screen is off, thus improving the visual effect of the display panel of this application embodiment. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a schematic diagram of a display panel according to an embodiment of this application.

[0022] Figure 2 for Figure 1 A partial enlarged view of region S of the display panel in an embodiment of this application.

[0023] Figure 3 for Figure 2 This is a partial enlarged view of the S region of the display panel in an embodiment of this application, after the high reflectivity portion has been hidden.

[0024] Figure 4 for Figure 2 A cross-sectional view of the display panel in an embodiment of this application.

[0025] Figure 5 for Figure 2 A cross-sectional view of the BB section of the display panel in an embodiment of this application.

[0026] Figure 6 for Figure 1 Another enlarged view of region S of the display panel in an embodiment of this application.

[0027] Figure 7 for Figure 6 This is a partial enlarged view of the S region of the display panel in an embodiment of this application, after the high reflectivity portion has been hidden.

[0028] Figure 8 for Figure 1 Another enlarged view of region S of the display panel in an embodiment of this application.

[0029] Figure 9 for Figure 1 Another enlarged view of region S of the display panel in an embodiment of this application.

[0030] Figure 10 for Figure 9 This is a partial enlarged view of the S region of the display panel in an embodiment of this application, after the high reflectivity portion has been hidden.

[0031] Figure 11 for Figure 1 Another enlarged view of region S of the display panel in an embodiment of this application.

[0032] Figure 12 for Figure 11 This is a partial enlarged view of the S region of the display panel in an embodiment of this application, after the high reflectivity portion has been hidden.

[0033] Figure 13 This is a schematic diagram of a display device according to an embodiment of this application.

[0034] Figure label:

[0035] 1. Substrate;

[0036] 2. Light-emitting functional layer; 21. Pixel; 22. Array layer; 221. Thin-film transistor;

[0037] 3. Touch function layer; 31. Touch signal line; 311. Notch; 312. Touch sub-segment; 32. High reflectivity film; 321. High reflectivity section; 33. Encapsulation layer;

[0038] 100. Display device; 200. Display panel;

[0039] A. Pixel group area; DF1, First direction; DF2, Second direction; DD1, First reference direction; DD2, Second reference direction. Detailed Implementation

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] Based on the above analysis, the applicant proposes a display panel, a display device, and a touch functional layer, including 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, and 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 high-reflectivity portion of a high-reflectivity film covers the notches of the touch signal lines, and an encapsulation layer covers the high-reflectivity film and the touch signal lines. The reflectivity of the encapsulation layer is lower than that of the high-reflectivity film, thereby enabling the high-reflectivity portion to block the notches of the touch signal lines. At the notches, the difference in reflectivity between the encapsulation layer and the touch signal lines is compensated, thereby weakening the reflective patterns caused by the reflectivity difference and reducing the visibility of reflective patterns in the display panel of this application embodiment when the screen is off, thus improving the visual effect of the display panel of this application embodiment.

[0048] Figure 1 This is a schematic diagram of a display panel according to an embodiment of this application. Figure 2 for Figure 1 A partial enlarged view of region S of the display panel in an embodiment of this application. Figure 3 for Figure 2 This is a partial enlarged view of the S region of the display panel in an embodiment of this application, after the high reflectivity portion has been hidden. Figure 4 for Figure 2 A cross-sectional view of the display panel in an embodiment of this application. Figure 5 for Figure 2 A cross-sectional view of the BB section of the display panel in an embodiment of this application.

[0049] Please see Figures 1 to 5This 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 facing away from the substrate 1; the touch functional layer 3 includes touch signal lines 31, a high reflectivity film 32, and an encapsulation layer 33, wherein 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 spaced apart; the touch signal lines 31 are provided with a plurality of notches 311; at least a portion of the high reflectivity film 32 is located on the touch signal lines 31. The side facing away from the substrate 1; the high reflectivity film 32 includes at least one high reflectivity portion 321, the orthographic projection of the high reflectivity portion 321 on the plane of the substrate 1 and the orthographic projection of the pixel 21 on the plane of the substrate 1 are spaced apart, the orthographic projection of at least one high reflectivity portion 321 on the plane of the substrate 1 and the orthographic projection of at least one notch 311 on the plane of the substrate 1 at least partially overlap; the high reflectivity portion 321 is insulated from the touch signal line 31; the encapsulation layer 33 is disposed on the side of the high reflectivity film 32 facing away from the substrate 1, and the reflectivity of the encapsulation layer 33 is less than the reflectivity of the high reflectivity film 32.

[0050] 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.

[0051] 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.

[0052] A light-emitting functional layer 2 is disposed on one side of the substrate 1 and is used for displaying light emission. The light-emitting functional layer 2 includes multiple pixels 21, each pixel 21 can emit light independently, and the multiple pixels 21 combine 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 the 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 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.

[0053] 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 thin-film transistor as an example for structural description. The thin-film transistor includes an active layer, which includes 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 thin-film transistor located on the gate insulating layer.

[0054] 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.

[0055] The touch signal line 31 has multiple notches 311 to reduce the impact of parasitic capacitance caused by the touch signal line 31 on the touch signal. Considering that the material of the touch signal line 31 usually has a high reflectivity, the reflectivity of the display panel of this application embodiment to external light in the area of ​​the touch signal line 31 excluding the notches 311 can be approximately equal to the reflectivity of the material used for the touch signal line.

[0056] The high-reflectivity portion 321 of the high-reflectivity film 32 is disposed on the side of the touch signal line 31 facing away from the substrate 1. The orthographic projection of the high-reflectivity portion 321 onto the plane of the substrate 1 is spaced apart from the orthographic projection of the pixel 21 onto the plane of the substrate 1. The high-reflectivity portion 321 can make room for the position of the pixel 21, so that the high-reflectivity portion 321 blocks the pixel 21 less, thereby enabling the display panel of this embodiment to have good brightness. The encapsulation layer 33 is disposed on the side of the high-reflectivity film 32 facing away from the substrate 1, covering the high-reflectivity film 32 and the touch signal line 31, and is used to encapsulate the touch signal line 31.

[0057] In related technologies, the reflectivity of the encapsulation layer 33 is usually significantly lower than that of the touch signal line 31. The reflectivity of the display panel of this application embodiment to external light can be regarded as approximately the reflectivity of the encapsulation layer 33 to external light. Therefore, the reflectivity of the multi-layer superposition at the notch 311 is also significantly lower than that of the touch signal line 31. Thus, there is a significant difference in reflectivity at the edge of the notch 311 (the end face of the touch signal line 31), which will cause the display panel of the application embodiment to exhibit reflective patterns when the screen is off. At least one high reflectivity portion 321 has its orthographic projection on the plane of substrate 1 at least partially overlapping with the orthographic projection of at least one notch 311 on the plane of substrate 1. That is, the high reflectivity portion 321 can cover a portion of the notch 311, thereby covering at least a portion of the end face of the touch signal line 31 at the notch 311. This weakens the difference in reflectivity between the end of the covered touch signal line 31 and the high reflectivity portion 321 to ambient light. When an observer views the display panel of this embodiment, it makes it difficult for the observer to perceive the reflective patterns formed by the reflection of ambient light by the display panel of this embodiment, reducing the visibility of the reflective patterns of the display panel of this embodiment and improving the observer's visual experience.

[0058] It should be noted that when the reflectivity of the high-reflectivity portion 321 is greater than that of the touch signal line 31, the high-reflectivity portion will block the end of the touch signal line 31, making it difficult for reflective patterns to form at the edge of the notch 311 (the end face of the touch signal line 31). When the reflectivity of the high-reflectivity portion 321 is less than that of the touch signal line 31, the reflectivity of the multi-layer superimposed film at the notch 311 can be considered equal to the reflectivity of the high-reflectivity portion 321, and the difference in reflectivity at the edge of the notch 311 (the end face of the touch signal line 31) becomes smaller, thereby reducing the visibility of reflective patterns on the display panel of this embodiment. The reflectivity of the high-reflectivity portion 321 can be greater than that of the touch signal line 31, or it can be less than that of the touch signal line 31. Therefore, when the reflectivity of the high reflectivity portion 321 is greater than that of the encapsulation layer 33, the display panels of the present application embodiments can reduce the reflective texture in the screen-off state and improve the visual experience of the observer.

[0059] Further reading 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, and the orthographic projection of the high reflectivity portion 321 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.

[0060] 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, but 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 with the first reference direction DD1 and also with the second reference direction DD2. In this case, within a pixel group area A, multiple notches 311 are arranged in a line. That is, the display panel in this embodiment adopts a single-line notch 311 form, which reduces the design difficulty of the touch signal line 31, thereby reducing the manufacturing difficulty and cost of the display panel in this embodiment. It should be noted that within a pixel group area A, the high reflectivity portion 321 covers at least one gap 311. That is, there may be gaps 311 that are not covered by the high reflectivity portion 321, and all gaps 311 may also be covered by the high reflectivity portion 321.

[0061] Figure 6 for Figure 1 Another enlarged view of region S of the display panel in an embodiment of this application. Figure 7 for Figure 6 This is a partial enlarged view of the S region of the display panel in an embodiment of this application, after the high reflectivity portion has been hidden.

[0062] Optionally, please refer to Figure 6 and Figure 7 The display panel of this application 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 portion of the notches 311 are arranged along a first direction DF1 to form a notch column, the number of notch columns is two, the two notch columns are arranged along a second direction DF2, the first direction DF1 and the second direction DF2 intersect, and the orthographic projection of the high reflectivity portion 321 on the plane where the substrate 1 is located covers the orthographic projection of the notch 311 on the plane where the substrate 1 is located.

[0063] 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 notch column along the first direction DF1. The first direction DF1 intersects the first reference direction DD1 and also intersects the second reference direction DD2. There are two notch columns, arranged along the second direction DF2. The second direction DF2 is perpendicular to the first square and intersects the first reference direction DD1 and the second reference direction 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 a single-line notch 311, which can reduce the design difficulty of the touch signal line 31, thereby reducing the manufacturing difficulty and cost of the display panel of this embodiment. It should be noted that within a pixel group area A, the high reflectivity part 321 covers at least one notch 311. That is, there can be notches 311 that are not covered by the high reflectivity part 321, and all notches 311 can also be covered by the high reflectivity part 321.

[0064] Figure 8 for Figure 1 Another enlarged view of region S of the display panel in an embodiment of this application.

[0065] Further, please refer to Figure 8 The touch signal line 31 includes multiple touch sub-segments 312, with a notch 311 located in the touch sub-segment 312, and the extension direction of the high reflectivity portion 321 is parallel to the extension direction of the touch sub-segment 312.

[0066] In this embodiment, the high reflectivity portion 321 covers a portion of the touch signal line 31, meaning that a portion of the touch signal line 31 is not covered by the high reflectivity portion 321. Considering that the touch signal line 31 is generally grid-like, it can be considered as multiple touch sub-segments 312 connected to form the touch signal line 31. The notch 311 is located in the touch sub-segment 312, but not all touch sub-segments 312 have a notch 311. When a certain touch sub-segment 312 has a notch 311, the extension direction of the high reflectivity portion 321 covering the notch 311 is parallel to the extension direction of the touch sub-segment 312. Given that the area of ​​the high reflectivity portion 321 is fixed, the high reflectivity portion 321 can reduce the area it occupies outside the touch sub-segment 312, thereby reducing the impact of the high reflectivity portion 321 on the brightness of the light emitted by the pixel 21, so that the display brightness of the display panel in this embodiment can meet the brightness requirements.

[0067] Further reading Figure 8 The width of the high reflectivity portion 321 is greater than or equal to the width of the touch sub-segment 312, so that the high reflectivity portion 321 can cover the end face of the touch sub-segment 312 at the notch 311, thereby reducing the difference in reflectivity between the two sides of the end face of the touch sub-segment 312, thereby reducing the visibility of the reflective texture of the display panel in this embodiment and improving the visual experience of the observer.

[0068] Further reading Figure 8 The number of notches 311 is the same as the number of high reflectivity portions 321, and they correspond one-to-one. There are multiple high reflectivity portions 321, and each high reflectivity portion 321 covers a notch 311. This reduces the difference in reflectivity on both sides of the end face of the touch sub-segment 312 at all notches 311, thereby reducing the visibility of the reflective texture of the display panel in this embodiment and improving the visual experience of the observer.

[0069] Further reading Figure 8 The reflectivity of the high reflectivity film 32 is R1, the reflectivity of the touch signal line 31 is R2, the width of the high reflectivity part 321 is D1, and the width of the touch sub-segment 312 is D2. R1 / R2 is negatively correlated with D1 / D2.

[0070] The ratio of the reflectivity R1 of the high reflectivity film 32 to the reflectivity R2 of the touch signal line 31 is negatively correlated with the ratio of the width D1 of the high reflectivity portion 321 to the width D2 of the touch sub-segment 312. In other words, given that the reflectivity R2 and width D2 of the touch signal line 31 are determined, the reflectivity R1 of the high reflectivity film 32 can be appropriately reduced to reduce the cost of the high reflectivity portion 321. At the same time, the width D1 of the high reflectivity portion 321 can be increased to increase its area. This makes the reflectivity of the film 321 reflect external light as close as that of the touch signal line 31 to external light, thereby reducing the visibility of the reflective texture of the display panel in this embodiment and improving the viewer's visual experience. Ideally, R1 / R2 is inversely proportional to D1 / D2. For example, D1*R1 = D2*R2, which makes the reflectivity per unit area of ​​the high reflectivity portion 321 equal to that of the touch signal line 31, which is equivalent to equal reflectivity per unit area. This makes it so that when the display panel of this embodiment reflects external light in the screen-off state, it will hardly produce obvious reflective patterns.

[0071] Further reading Figure 8 The width of the high-reflectivity film 32 is D1, and the width of the touch signal line 31 is D2, where 2 / 3 ≤ D1 / D2 ≤ 2. In this embodiment, the high-reflectivity portion 321 reduces the difference in reflectivity at the edge of the notch 311 (the end face of the touch signal line 31), thereby reducing the visibility of reflective patterns on the display panel. Therefore, the reflectivity R1 of the high-reflectivity film 32 and the reflectivity R2 of the touch signal line 31 should be sufficiently close. Considering that R1 / R2 is negatively correlated with D1 / D2, in this embodiment, 2 / 3 ≤ D1 / D2 ≤ 2 is ensured to reduce the visibility of reflective patterns on the display panel and improve the viewer's visual experience. Furthermore, the reflectivity R1 of the high-reflectivity film 32 should not be too large. If the reflectivity R1 of the high-reflectivity film 32 is too large, the high-reflectivity film 32 will reflect too much external light when the display panel is in display mode, affecting the display effect of the display panel.

[0072] Further reading Figure 8The width of the high-reflectivity film 32 is D1, and the width of the touch signal line 31 is D2, wherein 0.8 ≤ D1 / D2 ≤ 1.25. This further reduces the difference in reflectivity at the edge of the notch 311 (at the end face of the touch signal line 31), further reducing the visibility of reflective patterns on the display panel of this embodiment and further improving the viewer's visual experience. Furthermore, the reflectivity R1 of the high-reflectivity portion 321 and the reflectivity R2 of the touch sub-segment 312 can be made approximately equal, i.e., the width D1 of the high-reflectivity portion 321 and the width D2 of the touch signal line 31 are equal, thereby reducing the material used in the high-reflectivity portion 321 and lowering the manufacturing cost of the display panel of this embodiment.

[0073] Figure 9 for Figure 1 Another enlarged view of region S of the display panel in an embodiment of this application. Figure 10 for Figure 9 This is a partial enlarged view of the S region of the display panel in an embodiment of this application, after the high reflectivity portion has been hidden.

[0074] Further, please refer to Figure 9 and Figure 10 The orthographic projections of multiple notches 311 onto the plane of substrate 1 lie within the orthographic projection of a high-reflectivity portion 321 onto the plane of substrate 1. In other words, a single high-reflectivity portion 321 can cover multiple notches 311, thereby reducing the total number of high-reflectivity portions 321 and lowering the patterning difficulty of the high-reflectivity portions 321. It is understandable that the high-reflectivity portion 321 will cover more touch signal lines 31, while simultaneously, the high-reflectivity portion 321 should not obstruct the pixels 21.

[0075] Figure 11 for Figure 1 Another enlarged view of region S of the display panel in an embodiment of this application. Figure 12 for Figure 11 This is a partial enlarged view of the S region of the display panel in an embodiment of this application, after the high reflectivity portion has been hidden.

[0076] Further, please refer to Figure 11 and Figure 12 The number of high reflectivity portions 321 is one. The orthographic projection of the touch signal line 31 on the plane of the substrate 1 and the orthographic projection of the multiple notches 311 on the plane of the substrate 1 are both located within the orthographic projection of the high reflectivity portion 321 on the plane of the substrate 1. One high reflectivity portion 321, as a whole, covers all the notches 311 and also covers the touch signal line 31. This can further reduce the patterning difficulty of the high reflectivity portion 321 and reduce the manufacturing cost of the display panel of the present application embodiment.

[0077] Further reading Figures 8 to 12The reflectivity of the high-reflectivity film 32 is R1, and the reflectivity of the touch signal line 31 is R2, where 0.4 ≤ R1 ≤ 1 and 0.4 ≤ R2 ≤ 1. This means that the reflectivity R2 of the touch signal line 31 is close to the reflectivity R1 of the high-reflectivity film 32. When the reflectivity R1 of the high-reflectivity film 32 is greater than the reflectivity R2 of the touch signal line 31, at the notch 311, the reflectivity of multiple film layers can be considered close to the reflectivity R1 of the high-reflectivity film 32, and at the touch signal line 31, the reflectivity of multiple film layers can also be considered close to the reflectivity R1 of the high-reflectivity film 32. Therefore, the reflectivity at the edge of the notch 311 (at the end face of the touch signal line 31) is close, thereby significantly reducing the visibility of the reflective texture of the display panel in this embodiment and improving the observer's visual experience. Furthermore, the reflectivity R1 of the high reflectivity film 32 should not be too large. If the reflectivity R1 of the high reflectivity film 32 is too large, the high reflectivity film 32 will reflect too much external light when the display panel of this embodiment is in display mode, which will affect the display effect of the display panel of this embodiment.

[0078] Further reading Figures 8 to 12 The reflectivity of the high reflectivity film 32 is R1, and the reflectivity of the touch signal line 31 is R2, wherein 0.8≤R1 / R2≤1.25, which makes the reflectivity R1 of the high reflectivity film 32 slightly greater than the reflectivity R2 of the touch signal line 31, thereby further improving the ability of the display panel of this application embodiment to reflect external light when the screen is on, and thus improving the display effect of the display panel of this application embodiment.

[0079] Figure 13 This is a schematic diagram of a display device according to an embodiment of this application.

[0080] 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 function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator. When the display panel 200 of the display device 100 in this application embodiment is in a screen-off state, the display device 100 can reduce the reflection ripples formed by reflecting ambient light, thereby improving the visual experience for the observer when viewing the display device 100. It should be emphasized that the display panel 200 in this application embodiment has touch functionality; therefore, the display device 100 in this application embodiment should also have touch functionality.

[0081] Continue reading Figures 1 to 5This application embodiment also provides a touch function layer 3. The touch function layer 3 includes a touch signal line 31, a high reflectivity film 32, and an encapsulation layer 33. The orthographic projection of the touch signal line 31 onto the plane of the touch function layer 3 is spaced apart from the orthographic projection of the pixel 21 onto the plane of the touch function layer 3. The touch signal line 31 has multiple notches 311. At least a portion of the high reflectivity film 32 is located on the side of the touch signal line 31 away from the substrate 1. The high reflectivity film 32 includes at least one high reflectivity portion 321. The orthographic projection of the high reflectivity portion 321 onto the plane of the touch function layer 3 is spaced apart from the orthographic projection of the pixel 21 onto the plane of the touch function layer 3. The orthographic projection of the at least one high reflectivity portion 321 onto the plane of the touch function layer 3 at least partially overlaps with the orthographic projection of the at least one notch 311 onto the plane of the touch function layer 3. The high reflectivity portion 321 is insulated from the touch signal line 31. The encapsulation layer 33 is disposed on the side of the high reflectivity film 32 away from the substrate 1, and the reflectivity of the encapsulation layer 33 is less than the reflectivity of the high reflectivity film 32.

[0082] The touch function layer 3 is used for touch detection. It is understood that, in addition to the touch signal line 31, the touch function layer 3 also includes touch electrodes. The touch signal line 31 is electrically connected to the touch electrodes to conduct touch signals.

[0083] When fabricating a display panel using the touch function layer 3 of this application embodiment, the touch function layer 3 of this application embodiment can be directly disposed on the side of the light-emitting function layer 2 facing away from the substrate. The touch signal line 31 has an opening, and the orthographic projection of the pixel 21 on the plane where the touch function layer 3 is located is located within the orthographic projection of the opening on the plane where the touch function layer 3 is located. That is, the orthographic projection of the touch signal line 31 on the plane where the touch function layer 3 is located and the orthographic projection of the pixel 21 on the plane where the touch function layer 3 is located are spaced apart, so that the touch signal line 31 blocks the pixel 21 less, thereby enabling the display panel of this application embodiment to have good brightness.

[0084] The touch signal line 31 has multiple notches 311 to reduce the impact of parasitic capacitance caused by the touch signal line 31 on the touch signal. An encapsulation layer 33 is disposed on the side of the high reflectivity film 32 facing away from the substrate 1, covering the high reflectivity film 32 and the touch signal line 31, for encapsulating the touch signal line 31. The orthographic projection of at least one high reflectivity portion 321 onto the plane of the touch functional layer 3 at least partially overlaps with the orthographic projection of at least one notch 311 onto the plane of the touch functional layer 3. That is, the high reflectivity portion 321 can cover a portion of the notch 311, thereby covering at least a portion of the end face of the touch signal line 31 at the notch 311, weakening the difference in reflectivity between the covered end of the touch signal line 31 and the high reflectivity portion 321 to ambient light, and thus reducing the visibility of the reflective texture of the display panel in this embodiment.

[0085] In summary, this application provides a display panel, a display device, and a touch functional layer, including 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, and 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 high-reflectivity portion of the high-reflectivity film covers the notches of the touch signal lines, and an encapsulation layer covers the high-reflectivity film and the touch signal lines. The reflectivity of the encapsulation layer is lower than that of the high-reflectivity film, thereby enabling the high-reflectivity portion to block the notches of the touch signal lines. At the notches, the difference in reflectivity between the encapsulation layer and the touch signal lines is compensated, thereby weakening the reflective patterns caused by the reflectivity difference and reducing the visibility of reflective patterns in the display panel of this application embodiment when the screen is off, thus improving the visual effect of the display panel of this application embodiment.

[0086] 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 facing away from the substrate. The touch function layer includes touch signal lines, a high-reflectivity film, and an encapsulation layer. The orthographic projection of the touch signal lines onto the plane of the substrate is spaced apart from the orthographic projection of the pixels onto the plane of the substrate. The touch signal lines have multiple notched touch signal lines. At least a portion of the high-reflectivity film is located on the side of the touch signal lines facing away from the substrate. The high-reflectivity film includes at least one high-reflectivity portion. The orthographic projection of the high-reflectivity portion onto the plane of the substrate is spaced apart from the orthographic projection of the pixels onto the plane of the substrate. The orthographic projection of at least one high-reflectivity portion onto the plane of the substrate at least partially overlaps with the orthographic projection of at least one notch onto the plane of the substrate. The high-reflectivity portion is insulated from the touch signal lines. The encapsulation layer is disposed on the side of the high-reflectivity film facing away from the substrate, and the reflectivity of the encapsulation layer is less than the reflectivity of the high-reflectivity film.

2. The display panel according to claim 1, characterized in that, The touch signal line includes multiple touch sub-segments, the notch is located in the touch sub-segment, and the extension direction of the high reflectivity portion is parallel to the extension direction of the touch sub-segment; Preferably, the width of the high reflectivity portion is greater than or equal to the width of the touch sub-segment; Preferably, the number of the notches is the same as the number of the high reflectivity portions, and they correspond one-to-one.

3. The display panel according to claim 2, characterized in that, The reflectivity of the high reflectivity film is R1, the reflectivity of the touch signal line is R2, the width of the high reflectivity section is D1, and the width of the touch sub-segment is D2, wherein R1 / R2 is negatively correlated with D1 / D2.

4. The display panel according to claim 2, characterized in that, The width of the high reflectivity film is D1, and the width of the touch signal line is D2, wherein 2 / 3 ≤ D1 / D2 ≤ 2; Preferably, 0.8 ≤ D1 / D2 ≤ 1.

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5. The display panel according to claim 1, characterized in that, The orthographic projection of the plurality of notches onto the plane of the substrate lies within the orthographic projection of one of the high reflectivity portions onto the plane of the substrate. Preferably, the number of the high reflectivity portion is one, and the orthographic projection of the touch signal line on the plane of the substrate and the orthographic projection of the plurality of notches on the plane of the substrate are both located within the orthographic projection of the high reflectivity portion on the plane of the substrate.

6. The display panel according to claim 1, characterized in that, The reflectivity of the high-reflectivity film is R1, and the reflectivity of the touch signal line is R2, wherein 0.4≤R1≤1 and 0.4≤R2≤1; Preferably, 0.8 ≤ R1 / R2 ≤ 1.

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7. The display panel according to claim 1, characterized in that, Also includes: Multiple pixel groups arranged in an array, wherein multiple pixels are located within one pixel group; Within the pixel group area, a plurality of the notches are arranged along a first direction, and the orthographic projection of the high reflectivity portion onto the plane where the substrate is located covers the orthographic projection of the notches onto the plane where the substrate is located.

8. The display panel according to claim 1, characterized in that, Also includes: Multiple pixel groups arranged in an array, wherein multiple pixels are located within one pixel group; Within the pixel group region, some of the notches are arranged along a first direction to form a notch column. There are two notch columns, and the two notch columns are arranged along a second direction. The first direction and the second direction intersect. The orthographic projection of the high reflectivity portion onto the plane where the substrate is located covers the orthographic projection of the notch onto the plane where the substrate is located.

9. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 8.

10. A touch function layer, characterized in that, The touch function layer is used in the display panel according to any one of claims 1 to 8.

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