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 comprises a substrate, a light-emitting functional layer arranged on one side of the substrate, the light-emitting functional layer comprising a plurality of pixels, a touch functional layer arranged on the side of the light-emitting functional layer away from the substrate, the touch functional layer comprising a conductive functional layer and an encapsulation layer, the conductive functional layer being used for transmitting a touch signal, the conductive functional layer being provided with a plurality of openings, the conductive functional layer being provided with a plurality of notches, at least part of the encapsulation layer being arranged on the side of the conductive functional layer away from the substrate, the conductive functional layer comprising an optical sublayer, and the reflectivity of the encapsulation layer being greater than or equal to the reflectivity of the optical sublayer. The display panel, the display device and the manufacturing method of the display panel disclosed by the application can reduce the visibility of reflection lines when the display panel is turned off. The display panel, the display device and the manufacturing method of the display panel disclosed by the application can reduce the visibility of lines when the display panel is turned off.

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; 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 a conductive functional layer and an encapsulation layer; the conductive functional layer being used to transmit touch signals; the conductive functional layer having a plurality of openings, at least one pixel having its orthographic projection onto the plane of the substrate located within the orthographic projection of one opening onto the plane of the substrate, the orthographic projection of the conductive functional layer onto the plane of the substrate being spaced apart from the orthographic projection of the pixel onto the plane of the substrate; the conductive functional layer having a plurality of notches; at least a portion of the encapsulation layer being disposed on the side of the conductive functional layer opposite to the substrate; the conductive functional layer including an optical sublayer; the reflectivity of the encapsulation layer being greater than or equal to the reflectivity of the optical sublayer.

[0005] According to an embodiment of the first aspect of this application, the reflectivity of the encapsulation layer is R1, and the reflectivity of the optical sublayer is R2, wherein R1-R2 is less than or equal to a preset difference.

[0006] According to an embodiment of the first aspect of this application, the preset difference is less than or equal to 20%.

[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 optical sublayer includes one or more of graphene, carbon powder, and conductive polymers.

[0009] According to an embodiment of the first aspect of this application, the conductivity of the optical sublayer is greater than a preset conductivity, so that the optical sublayer transmits touch signals.

[0010] According to an embodiment of the first aspect of this application, the conductive functional layer further includes a conductive sublayer for transmitting touch signals; at least a portion of the optical sublayer is disposed on the side of the conductive sublayer facing away from the substrate; the orthographic projection of the conductive sublayer onto the plane of the substrate is located within the orthographic projection of the optical sublayer onto the plane of the substrate.

[0011] According to an embodiment of the first aspect of this application, the reflectivity of the conductive layer is greater than that of the encapsulation layer.

[0012] According to an embodiment of the first aspect of this application, the conductive sublayer includes a first surface and a sidewall surface. The first surface is a side surface of the conductive sublayer that is away from the substrate along the thickness direction of the substrate, and the sidewall surface is parallel to the thickness direction of the substrate. The optical sublayer covers the first surface, and the sidewall surface is exposed relative to the optical sublayer.

[0013] According to an embodiment of the first aspect of this application, the conductive sublayer includes a first surface and a sidewall surface. The first surface is a side surface of the conductive sublayer that faces away from the substrate along the thickness direction of the substrate, and the sidewall surface is parallel to the thickness direction of the substrate. The optical sublayer covers the first surface and the sidewall surface.

[0014] 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; wherein the ratio of the area of ​​the optical sublayer projected onto the plane of the substrate to the area of ​​the pixel group region projected onto the plane of the substrate in the plurality of pixel group regions is equal.

[0015] Secondly, embodiments of this application provide a display device, including the display panel of the first aspect of this application.

[0016] Thirdly, embodiments of this application provide 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; fabricating a touch functional layer on the side of the light-emitting functional layer opposite to the substrate; the touch functional layer including a conductive functional layer and an encapsulation layer; at least a portion of the encapsulation layer is disposed on the side of the conductive functional layer opposite to the substrate; the conductive functional layer includes an optical sublayer; the reflectivity of the encapsulation layer is greater than or equal to the reflectivity of the optical sublayer.

[0017] According to an embodiment of the third aspect of this application, a method for fabricating a touch functional layer includes: fabricating a conductive sublayer on the side of the light-emitting functional layer away from the substrate; the conductive sublayer includes a first surface, the first surface being the side surface of the conductive sublayer away from the substrate along the thickness direction of the substrate; and fabricating an optical sublayer to cover the first surface.

[0018] 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. The conductive functional layer is used to transmit touch signals. The conductive functional layer has multiple notches to reduce the impact of parasitic capacitance caused by the conductive functional layer on the accuracy of the touch signals. The reflectivity of the encapsulation layer is greater than or equal to the reflectivity of the optical sublayer of the conductive functional layer, which is equivalent to reducing the reflectivity of the light-emitting functional layer, making the reflectivity of the light-emitting functional layer close to that of the encapsulation layer. Therefore, when the display panel of this application embodiment is in a screen-off state, the difference between the reflectivity of the display panel at the conductive functional layer and the reflectivity at the notches is reduced, thereby weakening the reflective patterns caused by the difference in reflectivity and reducing the visibility of the reflective patterns when the display panel of this application embodiment is off, thus improving the visual effect of the display panel of this application embodiment. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a schematic diagram of the structure of a display panel according to an embodiment of this application.

[0021] Figure 2 for Figure 1 A partial enlarged view of the display panel in region S of an embodiment of this application.

[0022] Figure 3 for Figure 2 A cross-sectional view of the display panel in an embodiment of this application at section AA.

[0023] Figure 4 for Figure 1 Another enlarged view of the display panel in region S of the embodiment of this application.

[0024] Figure 5 for Figure 1 Another cross-sectional view of the display panel in the embodiment of this application in section AA.

[0025] Figure 6 for Figure 1 Another cross-sectional view of the display panel in the embodiment of this application in section AA.

[0026] Figure 7 This is a schematic diagram of the structure of a display device according to an embodiment of this application.

[0027] Figure 8 This is a schematic flowchart illustrating a method for manufacturing a display device according to an embodiment of this application.

[0028] Figure 9 This is a flowchart illustrating step S3 of a method for manufacturing a display device according to an embodiment of this application.

[0029] Figure label:

[0030] 1. Substrate;

[0031] 2. Light-emitting functional layer; 21. Pixel; 22. Array layer; 221. Thin-film transistor;

[0032] 3. Touch function layer; 31. Conductive function layer; 311. Notch; 312. Conductive sub-layer; 313. Optical sub-layer; 33. Encapsulation layer;

[0033] 100. Display device; 200. Display panel;

[0034] A. Pixel group area; DF1, First direction; DF2, Second direction; DD1, First reference direction; DD2, Second reference direction. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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, which are sequentially stacked. A conductive functional layer is used to transmit touch signals. The conductive functional layer has multiple notches to reduce the impact of parasitic capacitance caused by the conductive functional layer on the accuracy of the touch signals. The reflectivity of the encapsulation layer is greater than or equal to the reflectivity of the optical sublayer of the conductive functional layer, which effectively reduces the reflectivity of the light-emitting functional layer, making the reflectivity of the light-emitting functional layer close to that of the encapsulation layer. Therefore, when the display panel of this embodiment is in a screen-off state, the difference in reflectivity between the conductive functional layer and the notches is reduced, thereby weakening the reflective patterns caused by the difference in reflectivity between the conductive functional layer and the notches, reducing the visibility of the reflective patterns when the display panel is off, and improving the visual effect of the display panel.

[0043] 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 2 A cross-sectional view of the display panel in an embodiment of this application at section AA.

[0044] Please see Figures 1 to 3 This application provides a display panel 200, 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; a touch functional layer 3 disposed on the side of the light-emitting functional layer 2 away from the substrate 1; the touch functional layer 3 including a conductive functional layer 31 and an encapsulation layer 33; the conductive functional layer 31 is used to transmit touch signals; the conductive functional layer 31 has a plurality of openings, at least one pixel 21 having its orthographic projection on the plane of the substrate 1 located within the orthographic projection of an opening on the plane of the substrate 1, the orthographic projection of the conductive functional layer 31 on the plane of the substrate 1 being spaced apart from the orthographic projection of the pixel 21 on the plane of the substrate 1; the conductive functional layer 31 has a plurality of notches 311; at least a portion of the encapsulation layer 33 is disposed on the side of the conductive functional layer 31 away from the substrate 1; the conductive functional layer 31 includes an optical sublayer 313; the reflectivity of the encapsulation layer 33 is greater than or equal to the reflectivity of the optical sublayer 313.

[0045] It should be noted that the display panel 200 in this embodiment of the application, in addition to being used for display and light emission, also has a touch function.

[0046] 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.

[0047] 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 pixel 21 can emit light independently, and the multiple pixels 21 combine to realize the display light emission of the display panel 200 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 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.

[0048] 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.

[0049] A 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 conductive function layer 31. The conductive function layer 31 is electrically connected to the touch electrodes to conduct touch signals. The conductive function layer 31 has multiple openings, and the orthographic projection of at least one pixel 21 onto the plane of the substrate 1 is located within the orthographic projection of one of the openings onto the plane of the substrate 1. That is, the orthographic projection of the conductive function layer 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 conductive function layer 31 obstructs the pixel 21 less, thereby enabling the display panel 200 of this embodiment to have good brightness. An encapsulation layer 33 covers the conductive function layer 31 to encapsulate the conductive function layer 31, reducing the influence of external moisture on the conductive function layer 31, thereby protecting the conductive function layer 31 and extending the service life of the display panel 200 of this embodiment.

[0050] The conductive functional layer 31 is used to transmit touch signals. The conductive functional layer 31 has multiple notches 311 to reduce the impact of parasitic capacitance caused by the conductive functional layer 31 on the touch signals. The conductive functional layer 31 includes an optical sublayer 313. At the location of the conductive functional layer 31, the reflectivity of the display panel 200 in this embodiment can be approximately equal to the reflectivity of the conductive functional layer. At the location of the notches 311, the reflectivity of the display panel 200 in this embodiment can be approximately equal to the reflectivity of the encapsulation layer 33. It should be emphasized that the encapsulation layer 33 is a light-transmitting material; therefore, at the location of the notches 311, the reflectivity of the display panel 200 in this embodiment can be approximately equal to the reflectivity of the encapsulation layer 33. The optical sublayer 313 is a low-light-transmitting material; therefore, at the location of the conductive functional layer 31, the reflectivity of the display panel 200 in this embodiment can be approximately equal to the reflectivity of the conductive functional layer.

[0051] Because the reflectivity of the encapsulation layer 33 is low, and the reflectivity of the encapsulation layer 33 is greater than or equal to the reflectivity of the optical sublayer 313, the reflectivity of the display panel 200 at the notch 311 position in this embodiment is greater than or equal to the reflectivity at the optical sublayer 313 position. It is understood that when the reflectivity of the display panel 200 in this embodiment is low enough, its ability to reflect external light is low enough that even if there is a difference in reflectivity between the optical sublayer 313 position and the notch 311 position, the reflection pattern of the display panel 200 is difficult to observe. Therefore, the visibility of the reflection pattern of the display panel 200 when the screen is off can be reduced, thereby improving the visual effect of the display panel 200. For example, when the reflectivity of the encapsulation layer 33 is less than 20% and the reflectivity of the optical sublayer 313 is less than or equal to the reflectivity of the encapsulation layer 33, it can be considered that there is a difference between the reflectivity of the display panel 200 at the notch 311 position and the reflectivity of the display panel 200 at the optical sublayer 313 position in this embodiment of the application. However, the difference in reflectivity between the display panel 200 at the optical sublayer 313 position and the notch 311 position causes the reflective texture of the display panel 200 to external light to be indistinct and difficult to be perceived by the human eye of the observer. That is, the visibility of the reflective texture of the display panel 200 when the screen is off is reduced, and the visual effect of the display panel 200 in this embodiment of the application is improved.

[0052] Further reading Figure 2 The display panel 200 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.

[0053] Multiple pixels 21 are located within a pixel group area A. The colors of the multiple pixels 21 located within the same pixel group area A may be different, and they are used together for display illumination in this embodiment of the application. The arrangement of pixels 21 in different pixel group areas A may be the same. For ease of explanation, this embodiment of the application takes as an example that the pixels 21 include red pixels 21, green pixels 21, and blue pixels 21. 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.

[0054] Within a pixel group region A, multiple notches 311 are arranged in a line; that is, the display panel 200 of this embodiment adopts a single-line notch 311 form. It should be noted that within a pixel group region A, all conductive functional layers 31 include optical sublayers 313. Therefore, within a pixel group region, the reflectivity of the display panel 200 of this embodiment at various points within the corresponding areas of the conductive functional layers 31 is approximately the same as the reflectivity of the conductive functional layers 31.

[0055] Figure 4 for Figure 1 Another enlarged view of the display panel in region S of the embodiment of this application.

[0056] Optionally, please refer to Figure 4 The display panel 200 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, some of the gaps 311 are arranged along a first direction DF1 to form a column of gaps 311, the number of columns of gaps 311 is two, the two columns of gaps 311 are arranged along a second direction DF2, and the first direction DF1 and the second direction DF2 intersect.

[0057] Multiple pixels 21 are located within a pixel group area A. The colors of the multiple pixels 21 located within the same pixel group area A may be different, and they are used together for display illumination in this embodiment of the application. The arrangement of pixels 21 in different pixel group areas A may be the same. For ease of explanation, this embodiment of the application takes as an example that the pixels 21 include red pixels 21, green pixels 21, and blue pixels 21. 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.

[0058] Two columns of notches 311 are provided, 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 200 of this embodiment adopts a single-line notch 311 form. It should be noted that within a pixel group area A, all conductive functional layers 31 include optical sublayers 313. Therefore, within a pixel group area, the reflectivity of the display panel 200 of this embodiment at various points in the corresponding area of ​​the conductive functional layer 31 is approximately the reflectivity of the conductive functional layer 31.

[0059] Further reading Figure 2 or Figure 4The reflectivity of the encapsulation layer 33 is R1, and the reflectivity of the optical sublayer 313 is R2, wherein R1-R2 is less than or equal to a preset difference. Given that the material of the encapsulation layer 33 is fixed, the reflectivity R1 of the encapsulation layer 33 can be considered a fixed value. When the difference between the reflectivity R1 of the encapsulation layer 33 and the reflectivity R2 of the optical sublayer 313 is less than or equal to the preset difference, it can be considered that both the reflectivity R1 of the encapsulation layer 33 and the reflectivity R2 of the optical sublayer 313 are sufficiently small. Even if there is a difference in reflectivity between the display panel 200 at the optical sublayer 313 position and at the notch 311 position, the reflection pattern of the display panel 200 to external light is difficult to observe. That is, the visibility of the reflection pattern of the display panel 200 when the screen is off is reduced, and the visual effect presented by the display panel 200 when the screen is off is improved.

[0060] Further reading Figure 2 or Figure 4 The preset difference is less than or equal to 20%, meaning that the difference between the reflectivity R1 of the encapsulation layer 33 and the reflectivity R2 of the optical sublayer 313 is less than or equal to 20%. In this case, it can be considered that both the reflectivity R1 of the encapsulation layer 33 and the reflectivity R2 of the optical sublayer 313 are sufficiently small. Even if there is a difference in reflectivity between the display panel 200 at the optical sublayer 313 position and at the notch 311 position, the reflection pattern of the display panel 200 to external light is difficult to observe, thus reducing the visibility of the reflection pattern when the display panel 200 is off and improving the visual effect when the display panel 200 is off.

[0061] Further reading Figure 2 or Figure 4 The reflectivity R1 of the encapsulation layer 33 and the reflectivity R2 of the optical sublayer 313 are equal. In this embodiment, the reflectivity of the display panel 200 in the area corresponding to the conductive functional layer 31 and the area corresponding to the notch 311 shows almost no significant difference, and the display panel 200 in this embodiment produces almost no noticeable reflective patterns when the screen is off. It is understood that the equal reflectivity R1 of the encapsulation layer 33 and the reflectivity R2 of the optical sublayer 313 does not mean that the materials of the encapsulation layer 33 and the optical sublayer 313 are the same; different materials can also have equal reflectivity. It is understood that the encapsulation layer 33 uses a light-transmitting material to ensure sufficient brightness in the display panel 200 of this embodiment, while the optical sublayer 313 uses an opaque material to reduce the reflection of external light by absorbing it.

[0062] Further reading Figure 2 or Figure 4The optical sublayer 313 has a conductivity greater than a preset conductivity to enable it to transmit touch signals. In this embodiment, the optical sublayer 313 needs to have both low reflectivity and high conductivity. In this case, the optical sublayer 313 not only reduces the reflective texture of the display panel 200 to external light, but also serves as a touch signal line to transmit touch signals. Therefore, the material of the optical sublayer 313 simultaneously possesses low reflectivity and high conductivity. When the conductivity of the optical sublayer 313 is greater than a preset conductivity, it can be considered that the optical sublayer 313 can be used to transmit touch signals. For example, the preset conductivity can be 10. 5 S / m, when the conductivity of optical sublayer 313 is greater than 10 5 The conductivity of the optical sublayer (S / m) is sufficient to meet the transmission requirements of touch signals, thereby realizing the touch function of the display panel 200 in this embodiment.

[0063] Further reading Figure 2 or Figure 4 The optical sublayer 313 is made of one or more of graphene, carbon powder, and conductive polymers. Therefore, the optical sublayer 313 has both low reflectivity and high conductivity, which can reduce the visibility of the reflective texture of the display panel 200 of this embodiment to external light, and at the same time, it can transmit touch signals to realize the touch function of the display panel 200 of this embodiment.

[0064] Figure 5 for Figure 1 Another cross-sectional view of the display panel in the embodiment of this application in section AA.

[0065] Further, please refer to Figure 5 The conductive functional layer 31 also includes a conductive sublayer 312, which is used to transmit touch signals; at least a portion of the optical sublayer 313 is disposed on the side of the conductive sublayer 312 away from the substrate 1; the orthographic projection of the conductive sublayer 312 onto the plane of the substrate 1 is located within the orthographic projection of the optical sublayer 313 onto the plane of the substrate 1.

[0066] In this embodiment, the conductive functional layer 31 is composed of a conductive sublayer 312 and an optical sublayer 313. The conductive sublayer 312 has high conductivity and can transmit touch signals to realize the touch function of the display panel 200 in this embodiment. The optical sublayer 313 has low reflectivity and can reduce the visibility of the reflection texture of the display panel 200 to external light. The orthographic projection of the conductive sublayer 312 onto the plane of the substrate 1 lies within the orthographic projection of the optical sublayer 313 onto the plane of the substrate 1. That is, the optical sublayer 313 covers the conductive sublayer 312, reducing the influence of the conductive sublayer 312 on the reflectivity of the display panel 200 in the corresponding area of ​​the conductive functional layer 31 in this embodiment, making the reflectivity of the display panel 200 in the corresponding area of ​​the conductive functional layer 31 and the reflectivity of the optical sublayer 313 closer.

[0067] Further reading Figure 5 The reflectivity of the conductive sublayer 312 is greater than that of the encapsulation layer 33. The conductive sublayer 312 can be made of a metallic material, thus possessing high reflectivity. Since the optical sublayer 313 uses a material with low light transmittance and low reflectivity, most of the external light is absorbed by it. Therefore, the reflectivity of the display panel 200 in the region corresponding to the conductive functional layer 31 in this embodiment is equivalent to the reflectivity of the optical sublayer 313. Because the reflectivity of the optical sublayer 313 is sufficiently low, the reflectivity of the display panel 200 in the region corresponding to the conductive functional layer 31 in this embodiment is also sufficiently low, making it difficult for an observer to perceive the reflective texture of the display panel 200 towards external light; that is, reducing the visibility of the reflective texture of the display panel 200 towards external light.

[0068] Further reading Figure 5 The conductive sublayer 312 includes a first surface and a sidewall surface. The first surface is the side surface of the conductive sublayer 312 that is away from the substrate 1 along the thickness direction of the substrate 1, and the sidewall surface is parallel to the thickness direction of the substrate 1. The optical sublayer 313 covers the first surface, and the sidewall surface is exposed relative to the optical sublayer 313.

[0069] In this embodiment, the conductive sublayer 312 is fabricated first, followed by the optical sublayer 313. After the conductive sublayer 312 is fabricated, it has a first surface facing away from the substrate 1 along the thickness direction of the substrate 1, and a sidewall surface parallel to the thickness direction of the substrate 1. The optical sublayer 313 covers the first surface, and the sidewall surface is exposed relative to the optical sublayer 313; that is, the optical sublayer 313 only covers the first surface of the conductive sublayer 312. At this time, the orthographic projection of the optical sublayer 313 onto the plane of the substrate 1 coincides with the orthographic projection of the conductive sublayer 312 onto the plane of the substrate 1.

[0070] Figure 6 for Figure 1 Another cross-sectional view of the display panel in the embodiment of this application in section AA.

[0071] Further, please refer to Figure 6 The conductive sublayer 312 includes a first surface and a sidewall surface. The first surface is the side surface of the conductive sublayer 312 that is away from the substrate 1 along the thickness direction of the substrate 1, and the sidewall surface is parallel to the thickness direction of the substrate 1. The optical sublayer 313 covers the first surface and the sidewall surface.

[0072] In this embodiment, the conductive sublayer 312 is fabricated first, followed by the optical sublayer 313. After the conductive sublayer 312 is fabricated, it has a first surface facing away from the substrate 1 along the thickness direction of the substrate 1, and a sidewall surface parallel to the thickness direction of the substrate 1. The optical sublayer 313 covers both the first surface and the sidewall surface. The orthographic projection of the optical sublayer 313 onto the plane of the substrate 1 overlaps with the orthographic projection of the conductive sublayer 312 onto the plane of the substrate 1. That is, the orthographic projection of the optical sublayer 313 onto the plane of the substrate 1 is slightly larger than the orthographic projection of the conductive sublayer 312 onto the plane of the substrate 1, so that the reflectivity of the display panel 200 at the conductive functional layer 31 in this embodiment can be approximately equal to the reflectivity of the optical sublayer 313.

[0073] Further reading Figure 2 and Figure 4 The display panel 200 in this embodiment further includes: a plurality of pixel group regions A arranged in an array, wherein a plurality of pixels 21 are located in a pixel group region A; within the plurality of pixel group regions A, the ratio of the area of ​​the optical sublayer 313 projected onto the plane of the substrate 1 to the area of ​​the pixel group region A projected onto the plane of the substrate 1 is equal.

[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 may be different, but they are used together for display illumination in this embodiment. The arrangement of pixels 21 within different pixel group areas A may 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, which intersects with both the first reference direction DD1 and the second reference direction DD2.

[0075] Within different pixel group regions A, the ratio of the area of ​​the optical sublayer 313 projected onto the plane of substrate 1 to the area of ​​pixel group region A projected onto the plane of substrate 1 is equal. This means that within different pixel group regions A, the reflected luminous flux of the display panel 200 in this embodiment is the same. Therefore, the reflectivity of the display panel 200 in different pixel group regions A is almost identical. Considering the size of a single pixel 21, the size of the pixel group region A corresponding to multiple pixels 21 is usually close to the smallest size that the human eye can perceive. Therefore, when the reflectivity of the display panel 200 in any embodiment of this application is almost identical within different pixel group regions A, the human eye cannot directly observe the reflection ripples caused by the reflection of external light by the display panel 200 in this embodiment.

[0076] Figure 7 This is a schematic diagram of the structure of a display device according to an embodiment of this application.

[0077] Please see Figure 7 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 should be noted that the display device 100 in this application embodiment has touch functionality.

[0078] Figure 8 This is a schematic flowchart illustrating a method for manufacturing a display device according to an embodiment of this application.

[0079] Please see Figure 8 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.

[0080] The method for manufacturing the display panel 200 according to this application embodiment includes:

[0081] Continue reading Figure 8 Step S1: Provide substrate 1.

[0082] The finished product of substrate 1 can be obtained directly, or substrate 1 can be manufactured directly.

[0083] Continue reading Figure 8 Step S2: Create the luminescent functional layer 2.

[0084] 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.

[0085] Continue reading Figure 8 Step S3: Create the touch function layer 3.

[0086] 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 the conductive functional layer 31, the touch function layer 3 also includes touch electrodes. The conductive functional layer 31 is electrically connected to the touch electrodes to conduct touch signals. The conductive functional layer 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. The touch function layer 3 also includes an encapsulation layer 32, which covers the conductive functional layer 31 and encapsulates the conductive functional layer 31, reducing the influence of external moisture on the conductive functional layer 31, thereby protecting the conductive functional layer 31 and extending the lifespan of the display panel 200 of the present invention.

[0087] Figure 9 This is a flowchart illustrating step S3 of a method for manufacturing a display device according to an embodiment of this application.

[0088] Further, please refer to Figure 9 and combined Figure 2 and Figure 4 In this embodiment of the application, the conductive functional layer 31 further includes a conductive sublayer 312, which is used to transmit touch signals; at least a portion of the optical sublayer 313 is disposed on the side of the conductive sublayer 312 away from the substrate 1; the orthographic projection of the conductive sublayer 312 onto the plane of the substrate 1 is located within the orthographic projection of the optical sublayer 313 onto the plane of the substrate 1.

[0089] In this embodiment of the application, step S3 includes:

[0090] Continue reading Figure 9 Step S3.1: Fabricate conductive layer 312.

[0091] On the side of the light-emitting functional layer 2 away from the substrate 1, a conductive sublayer 312 is formed. The conductive sublayer 312 includes a first surface, which is the surface of the conductive sublayer 312 away from the substrate 1 along the thickness direction of the substrate 1.

[0092] Continue reading Figure 9 Step S3.2: Fabricate optical sublayer 313.

[0093] The optical sublayer 313 is fabricated by vapor deposition, such that the optical sublayer 313 covers the first surface. The optical sublayer 313 may or may not cover the sidewalls of the conductive sublayer 312. The conductive sublayer 312 and the optical sublayer 313, which at least partially covers the conductive sublayer 312, form a conductive functional layer 31.

[0094] 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, which are sequentially stacked. A conductive functional layer is used to transmit touch signals. The conductive functional layer has multiple notches to reduce the impact of parasitic capacitance caused by the conductive functional layer on the accuracy of the touch signals. The reflectivity of the encapsulation layer is greater than or equal to the reflectivity of the optical sublayer of the conductive functional layer, which effectively reduces the reflectivity of the light-emitting functional layer, making the reflectivity of the light-emitting functional layer close to that of the encapsulation layer. Therefore, when the display panel of this application is in a screen-off state, the difference between the reflectivity of the display panel at the conductive functional layer and the reflectivity at the notches is reduced, thereby weakening the reflective patterns caused by the difference in reflectivity and reducing the visibility of the reflective patterns when the display panel is off, thus improving the visual effect of the display panel of this application.

[0095] 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 a conductive function layer and an encapsulation layer; the conductive function layer is used to transmit touch signals; the conductive function layer has multiple openings, and the orthographic projection of at least one pixel on the plane of the substrate is located within the orthographic projection of one of the openings on the plane of the substrate, and the orthographic projection of the conductive function layer on the plane of the substrate and the orthographic projection of the pixel on the plane of the substrate are spaced apart; the conductive function layer has multiple notches; at least a portion of the encapsulation layer is disposed on the side of the conductive function layer facing away from the substrate; the conductive function layer includes an optical sublayer; the reflectivity of the encapsulation layer is greater than or equal to the reflectivity of the optical sublayer.

2. The display panel according to claim 1, characterized in that, The reflectivity of the encapsulation layer is R1, and the reflectivity of the optical sublayer is R2, wherein R1-R2 is less than or equal to a preset difference; Preferably, the preset difference is less than or equal to 20%; Preferably, R1 = R2; Preferably, the material of the optical sublayer includes one or more of graphene, carbon powder, and conductive polymers.

3. The display panel according to claim 1, characterized in that, The conductivity of the optical sublayer is greater than a preset conductivity, so that the optical sublayer can transmit touch signals; Preferably, the material of the optical sublayer includes one or more of graphene, carbon powder, and conductive polymers.

4. The display panel according to claim 1, characterized in that, The conductive functional layer further includes a conductive sublayer for transmitting touch signals; at least a portion of the optical sublayer is disposed on the side of the conductive sublayer facing away from the substrate; the orthographic projection of the conductive sublayer onto the plane of the substrate is located within the orthographic projection of the optical sublayer onto the plane of the substrate. Preferably, the reflectivity of the conductive sublayer is greater than that of the encapsulation layer.

5. The display panel according to claim 4, characterized in that, The conductive sublayer includes a first surface and a sidewall surface. The first surface is a side surface of the conductive sublayer that faces away from the substrate along the thickness direction of the substrate. The sidewall surface is parallel to the thickness direction of the substrate. The optical sublayer covers the first surface, and the sidewall surface is exposed relative to the optical sublayer.

6. The display panel according to claim 4, characterized in that, The conductive sublayer includes a first surface and a sidewall surface. The first surface is a side surface of the conductive sublayer that faces away from the substrate along the thickness direction of the substrate. The sidewall surface is parallel to the thickness direction of the substrate. The optical sublayer covers the first surface and the sidewall surface.

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 plurality of pixel groups, the ratio of the area of ​​the optical sublayer projected onto the plane of the substrate to the area of ​​the pixel group region projected onto the plane of the substrate is equal.

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

9. 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 7; The method for manufacturing the display panel includes: Provide substrate; A light-emitting functional layer is fabricated on one side of the substrate, the light-emitting functional layer including a plurality of pixels; A touch function layer is formed on the side of the light-emitting functional layer facing away from the substrate; the touch function layer includes a conductive functional layer and an encapsulation layer; at least a portion of the encapsulation layer is disposed on the side of the conductive functional layer facing away from the substrate; the conductive functional layer includes an optical sublayer; the reflectivity of the encapsulation layer is greater than or equal to the reflectivity of the optical sublayer.

10. The method for manufacturing a display panel according to claim 9, characterized in that, The method for creating the touch function layer includes: A conductive sublayer is fabricated on the side of the light-emitting functional layer that is away from the substrate; the conductive sublayer includes a first surface, which is the surface of the conductive sublayer that is away from the substrate along the thickness direction of the substrate. An optical sublayer is fabricated to cover the first surface.

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