Display panel and display device for reducing screen line visibility in screen-off state

Abstract

The application discloses a display panel and a display device for reducing the visibility of screen lines when the screen is turned off. The display panel for reducing the visibility of screen lines when the screen is turned off comprises a substrate, a light-emitting functional layer arranged on one side of the substrate, and a touch functional layer arranged on the side of the light-emitting functional layer away from the substrate. The touch functional layer comprises a touch signal line and an encapsulation layer. At least part of the encapsulation layer is arranged on the side of the touch signal line away from the substrate, and the reflectivity of the encapsulation layer is less than that of the touch signal line. The touch signal line comprises a plurality of first signal line segments and a plurality of second signal line segments, and the first signal line segments and the second signal line segments are electrically connected. The first signal line segments are provided with notches, and the width of at least one first signal line segment is greater than that of the second signal line segments. The display panel and the display device for reducing the visibility of screen lines when the screen is turned off can reduce the visibility of the reflection lines of the display panel when the screen is turned off.

Description

Technical Field

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

[0004] In a first aspect, embodiments of this application provide a display panel for reducing the visibility of textures when the screen is off, 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 and an encapsulation layer; at least a portion of the encapsulation layer is disposed on the side of the touch signal lines opposite to the substrate, and the reflectivity of the encapsulation layer is less than the reflectivity of the touch signal lines; the touch signal lines include a plurality of first signal line segments and a plurality of second signal line segments, the first signal line segments and the second signal line segments are electrically connected, the orthographic projection of the first signal line segment on the plane of the substrate is spaced apart from the orthographic projection of the pixel on the plane of the substrate, and the orthographic projection of the second signal line segment on the plane of the substrate is spaced apart from the orthographic projection of the pixel on the plane of the substrate; the first signal line segments have notches, and the width of at least one first signal line segment is greater than the width of the second signal line segment.

[0005] According to an embodiment of the first aspect of this application, the width of the first signal segment is D1, the width of the second signal segment is D2, and the length of the gap along the extension direction of the first signal segment is L0, wherein D1 / D2 is positively correlated with L0.

[0006] According to an embodiment of the first aspect of this application, 0.2μm≤D1-D2≤0.25μm.

[0007] According to an embodiment of the first aspect of this application, the first signal segment includes a first sub-segment, and the second signal segment includes a second sub-segment. The length L1 of the first sub-segment and the length L2 of the second sub-segment are equal. The width of the first sub-segment is d1, the width of the second sub-segment is d2, and the length of the gap along the extension direction of the first sub-segment is L0. Wherein, |(L1-L0)·d1-L2·d2|≤K·(L2·d2), and K is a preset error ratio.

[0008] According to an embodiment of the first aspect of this application, K = 5%.

[0009] According to an embodiment of the first aspect of this application, (L1-L0)·d1=L2·d2.

[0010] According to an embodiment of the first aspect of this application, the first signal segment includes a third sub-segment, the second signal segment includes a fourth sub-segment, the length L3 of the third sub-segment and the length L4 of the fourth sub-segment are equal; the width of the third sub-segment is d3, the width of the fourth sub-segment is d4, and the length of the gap along the extension direction of the third sub-segment is L0; wherein, |(L3-L0)·d3-L4·d4|≤K·(L4·d4), and K is a preset error ratio.

[0011] According to an embodiment of the first aspect of this application, K = 5%.

[0012] According to an embodiment of the first aspect of this application, (L3-L0)·d3=L4·d4.

[0013] 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 touch signal line 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.

[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; and within the plurality of pixel group regions, the number of first signal lines with a width greater than the width of the second signal line segment is equal.

[0015] According to an embodiment of the first aspect of this application, the width of at least one first signal segment is equal to the width of the second signal segment.

[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; and within the pixel group region, a plurality of notches are arranged along a first direction.

[0017] 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 gaps are arranged along a first direction to form a gap column, the number of gap columns is two, the two gap columns are arranged along a second direction, and the first direction and the second direction intersect.

[0018] Secondly, embodiments of this application provide a display device, including a display panel that reduces the visibility of textures when the screen is off, as described in the first aspect of this application.

[0019] In the display panel and display device for reducing the visibility of textures when the screen is off, provided in this application embodiment, a substrate, a light-emitting functional layer, and a touch functional layer are stacked sequentially. A first signal segment and a second signal segment of the touch signal line are electrically connected for transmitting touch signals. The first signal segment has multiple notches to reduce the impact of parasitic capacitance caused by the touch signal line on the accuracy of the touch signal. At least one first signal segment has a width greater than the width of the second signal segment, effectively increasing the width of the first signal segment and thus increasing its area, thereby reducing the area difference between the first and second signal segments. Therefore, when the display panel of this application embodiment is in a screen-off state, the difference in the reflectivity of the first signal segment with notches and the second signal segment to external light is reduced, thereby weakening the reflective textures caused by the difference in reflectivity and reducing the visibility of reflective textures 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

[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 for reducing the visibility of textures when the screen is off, according to an embodiment of this application.

[0022] Figure 2 for Figure 1 A magnified view of a display panel in region S in an embodiment of this application that reduces the visibility of textures when the screen is off.

[0023] Figure 3 for Figure 2 A cross-sectional view of the display panel in the embodiment of this application, which reduces the visibility of textures when the screen is off, in section AA.

[0024] Figure 4 for Figure 2 A cross-sectional view of the display panel in the BB section of this application embodiment, which reduces the visibility of textures when the screen is off.

[0025] Figure 5 for Figure 1 Another enlarged view of the display panel in region S, which reduces the visibility of textures when the screen is off, according to an embodiment of this application.

[0026] Figure 6 for Figure 2A magnified view of a display panel in the pixel group area that reduces the visibility of textures when the screen is off, according to an embodiment of this application.

[0027] Figure 7 for Figure 2 Another magnified view of the pixel group area of ​​the display panel in the embodiment of this application, which reduces the visibility of textures when the screen is off.

[0028] Figure 8 for Figure 1 Another enlarged view of the display panel in region S, which reduces the visibility of textures when the screen is off, according to an embodiment of this application.

[0029] Figure 9 This is a schematic diagram of the structure of a display device according to an embodiment of this application.

[0030] Figure label:

[0031] 1. Substrate;

[0032] 2. Light-emitting functional layer; 21. Pixel; 22. Array layer; 221. Thin-film transistor;

[0033] 3. Touch function layer; 31. Touch signal line; 311. Notch; 312. First signal segment; 312a. First sub-segment; 312b. Third sub-segment; 313. Second signal segment; 313a. Second sub-segment; 313b. Fourth sub-segment; 33. Encapsulation layer;

[0034] 100. Display device; 200. Display panel;

[0035] A. Pixel group area; DF1, First direction; DF2, Second direction; DD1, First reference direction; DD2, Second reference direction. Detailed Implementation

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] Based on the above analysis, the applicant proposes a display panel and display device for reducing the visibility of textures when the screen is off. The display panel for reducing the visibility of textures when the screen is off includes a substrate, a light-emitting layer, and a touch-sensitive layer. The substrate, the light-emitting layer, and the touch-sensitive layer are stacked sequentially. A first signal segment and a second signal segment of a touch signal line are electrically connected for transmitting touch signals. The first signal segment has multiple notches to reduce the impact of parasitic capacitance caused by the touch signal line on the accuracy of the touch signal. At least one first signal segment has a width greater than the width of the second signal segment, which is equivalent to increasing the width of the first signal segment, thereby increasing the area of ​​the first signal segment and reducing the area difference between the first and second signal segments. Therefore, when the display panel of this embodiment is in a screen-off state, the difference in the reflectivity of the first signal segment with notches and the second signal segment to reflect external light is reduced, thereby weakening the reflective textures caused by the difference in reflectivity, reducing the visibility of reflective textures when the display panel of this embodiment is off, and improving the visual effect of the display panel of this embodiment.

[0044] Figure 1 This is a schematic diagram of a display panel for reducing the visibility of textures when the screen is off, according to an embodiment of this application. Figure 2 for Figure 1 A magnified view of a display panel in region S in an embodiment of this application that reduces the visibility of textures when the screen is off. Figure 3 for Figure 2 A cross-sectional view of the display panel in the embodiment of this application, which reduces the visibility of textures when the screen is off, in section AA. Figure 4 for Figure 2 A cross-sectional view of the display panel in the BB section of this application embodiment, which reduces the visibility of textures when the screen is off.

[0045] Please see Figures 1 to 4This application provides a display panel for reducing the visibility of textures when the screen is off, comprising: 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 opposite to the substrate 1; the touch functional layer 3 including touch signal lines 31 and an encapsulation layer 33; at least a portion of the encapsulation layer 33 is disposed on the side of the touch signal lines 31 opposite to the substrate 1, and the reflectivity of the encapsulation layer 33 is less than the reflectivity of the touch signal lines 31; the touch signal lines 31 include a plurality of pixels 21. A first signal line segment 312 and a plurality of second signal line segments 313 are electrically connected. The orthographic projection of the first signal line segment 312 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 orthographic projection of the second signal line segment 313 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 first signal line segment 312 is provided with a notch 311, and the width of at least one first signal line segment 312 is greater than the width of the second signal line segment 313.

[0046] 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.

[0047] 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.

[0048] A light-emitting functional layer 2 is disposed on one side of the substrate 1 for displaying light emission. The light-emitting functional layer 2 includes multiple pixels 21, each of which can emit light independently. The multiple pixels 21 are combined to realize the display light emission of the display panel in this embodiment. In this embodiment, the light-emitting functional layer 2 includes a light-emitting device, which corresponds to a pixel 21. The light-emitting device can be an organic light-emitting diode (OLED), a micro-LED, or a mini-LED. For ease of explanation, this embodiment uses an organic light-emitting diode as an example. The light-emitting device includes an anode, a pixel 21 definition layer covering the anode, an organic light-emitting layer, and a cathode. The anode, organic light-emitting layer, and cathode are arranged sequentially along the direction away from the substrate 1.

[0049] 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.

[0050] 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 is located 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. The encapsulation layer 33 covers the touch signal line 31 to encapsulate the touch signal line 31, reducing the influence of external moisture on the touch signal line 31, thereby protecting the touch signal line 31 and extending the lifespan of the display panel of this embodiment with reduced visibility of textures when the screen is off.

[0051] The first signal segment 312 and the second signal segment 313 of the touch signal line 31 are connected to conduct touch signals. The first signal segment 312 has multiple notches 311 to reduce the influence of parasitic capacitance caused by the touch signal line 31 on the touch signal. Considering that the materials of the first signal segment 312 and the second signal segment 313 are usually the same, that is, the reflectivity of the first signal segment 312 and the second signal segment 313 are equal, the reflectivity of the display panel of this embodiment to external light at the first signal segment 312 and the second signal segment 313 can be approximately equal to the reflectivity of the touch signal line 31. At the notches 311, the reflectivity of the display panel of this embodiment to external light can be approximately equal to the reflectivity of the encapsulation layer 33. Since the reflectivity of the encapsulation layer 33 is less than the reflectivity of the touch signal line 31, the reflectivity of the display panel of this embodiment at the notches 311 is less than the reflectivity at the first signal segment 312 and the second signal segment 313. Within the region corresponding to the first signal segment 312, the reflectivity of the first signal segment 312 and the reflectivity corresponding to the notch 311 affect the reflectivity of the display panel in this embodiment to external light within the region corresponding to the first signal segment 312. The reflectivity will be lower than the reflectivity of the first signal segment 312 itself. Within the region corresponding to the second signal segment 313, the reflectivity of the display panel in this embodiment to external light is equal to the reflectivity of the second signal segment 313 itself. Therefore, the reflectivity of the display panel in this embodiment to external light within the region corresponding to the first signal segment 312 is less than the reflectivity of the display panel in the region corresponding to the second signal segment 313.

[0052] It should be noted that the area corresponding to the first signal segment 312 includes the area where the first signal segment 312 is located, as well as the area where the gap 311 of the first signal segment 312 is located; the area corresponding to the second signal segment 313 includes the area where the second signal segment 313 is located.

[0053] The width of the first signal segment 312 is greater than the width of the second signal segment 313. That is, in this embodiment, the width of the first signal segment 312 is increased. Given that the lengths of the first and second signal segments 312 and 313 are fixed, this is equivalent to increasing the area of ​​the first signal segment 312. Within the area corresponding to the first signal segment 312, due to the increased area of ​​the first signal segment 312, the display panel of this embodiment can reflect more external light, thereby improving the reflectivity of the display panel in the area corresponding to the first signal segment 312. Therefore, the difference in reflectivity between the display panel in the area corresponding to the first signal segment 312 and the area corresponding to the second signal segment 313 can be 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 in this embodiment.

[0054] It is understandable that the width of a portion of the first signal line segment 312 can be increased. When the width of a portion of the first signal line segment 312 is increased, the width of at least one first signal line segment 312 is equal to the width of the second signal line segment 313. Due to the presence of the increased width of the first signal line segment 312, the visibility of the reflective texture of the display panel in this embodiment of the application is reduced when the screen is off, thereby improving the visual effect of the display panel in this embodiment of the application. In this embodiment of the application, the width of all the first signal line segments 312 can also be increased to weaken the difference in reflectivity caused by each notch 311, which can further reduce the visibility of the reflective texture of the display panel in this embodiment of the application when the screen is off. For ease of explanation, in this embodiment of the application, the example is given where the width of each first signal line segment 312 with a notch 311 is greater than the width of the second signal line segment 313.

[0055] Further reading Figure 2 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.

[0056] 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.

[0057] Within a pixel group area A, multiple notches 311 are arranged in a line, that is, the display panel of this embodiment adopts the form of a single-line notch 311. It should be noted that within a pixel group area A, the width of at least one first signal line segment 312 with a notch 311 is increased, that is, there may be first signal line segments 312 whose width is not increased.

[0058] Figure 5 for Figure 1 Another enlarged view of the display panel in region S, which reduces the visibility of textures when the screen is off, according to an embodiment of this application.

[0059] Optionally, please refer to Figure 5 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 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, and the first direction DF1 and the second direction DF2 intersect.

[0060] The structure of pixel group region A has been described in the previous embodiments and will not be repeated here.

[0061] Two notch columns 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 of this embodiment adopts a single-line notch 311 form. It should be noted that within a pixel group area A, the width of at least one first signal line segment 312 with a notch 311 is increased; that is, a first signal line segment 312 with an unincreased width can exist.

[0062] Figure 6 for Figure 2 A magnified view of a display panel in the pixel group area that reduces the visibility of textures when the screen is off, according to an embodiment of this application.

[0063] Further, please refer to Figure 6 The width of the first signal segment 312 is D1, the width of the second signal segment 313 is D2, and the length of the gap 311 along the extension direction of the first signal segment 312 is L0, wherein D1 / D2 is positively correlated with L0.

[0064] The ratio of the width D1 of the first signal segment 312 to the width D2 of the second signal segment 313 is positively correlated with the length L0 of the gap 311 along the extension direction of the first signal segment 312. In other words, the increase in the width D1 of the first signal segment 312 relative to the width D2 of the second signal segment 313 is positively correlated with the length L0 of the gap 311 along the extension direction of the first signal segment 312. When the width D2 of the second signal segment 313 is a fixed value, it can be considered that the width D1 of the first signal segment 312 is positively correlated with the length L0 of the gap 311 along the extension direction of the first signal segment 312. The larger the length L0 of the notch 311 along the extension direction of the first signal line segment 312, the larger the notch 311 is. In order to reduce the change in the reflected light flux of the external light reflected by the display panel in the area corresponding to the first signal line segment 312 in this embodiment of the application, the width D1 of the first signal line segment 312 is increased, thereby increasing the area of ​​the first signal line segment 312 and reducing the difference in the ability of the display panel in this embodiment of the application to reflect external light in the area corresponding to the first signal line segment 312 and the area corresponding to the second signal line segment 313.

[0065] It should be noted that increasing the width D1 of the first signal segment 312 to be greater than the width D2 of the second signal segment 313 aims to increase the area of ​​the first signal segment 312 and decrease the areas of the first signal segment 312 and the second signal segment 313. This results in the display panel of this embodiment having similar reflectivity to external light in the areas corresponding to the first signal segment 312 and the second signal segment 313. During the widening of the first signal segment 312, its width gradually decreases along the direction away from the notch 311 until it is equal to the width of the second signal segment 313. In other words, the first signal segment 312 can be considered as two trapezoids separated by the notch 311, allowing more material of the first signal segment 312 to be closer to the notch 311, thereby reducing reflective patterns caused by the difference in reflectivity at the notch 311.

[0066] For ease of explanation, this embodiment uses the example of the first signal line segment 312 having equal width at all points.

[0067] Further reading Figure 6Considering that the length of the first signal segment 312 and the second signal segment 313 is typically tens of micrometers and the width is typically a few micrometers, the length of the notch 311 along the extension direction of the first signal segment 312 is also typically a few micrometers. When 0.2μm≤D1-D2≤0.25μm, the area of ​​the first signal segment 312 and the area of ​​the second signal segment 313 can be made similar, thereby making the reflectivity of the display panel of this embodiment to external light similar in the area corresponding to the first signal segment 312 and the area corresponding to the second signal segment 313. This significantly reduces the visibility of the reflective texture of the display panel of this embodiment when the screen is off, thereby improving the visual effect of the display panel of this embodiment.

[0068] Figure 7 for Figure 2 Another magnified view of the pixel group area of ​​the display panel in the embodiment of this application, which reduces the visibility of textures when the screen is off.

[0069] Further, please refer to Figure 7 The first signal segment 312 includes a first sub-segment 312a, and the second signal segment 313 includes a second sub-segment 313a. The length L1 of the first sub-segment 312a and the length L2 of the second sub-segment 313a are equal. The width of the first sub-segment 312a is d1, the width of the second sub-segment 313a is d2, and the length of the gap 311 along the extension direction of the first sub-segment 312a is L0. Wherein, |(L1-L0)·d1-L2·d2|≤K·(L2·d2), and K is a preset error ratio.

[0070] Considering that the opening of the touch signal line 31 allows space for the pixel 21, and that the size of pixels 21 of different colors may vary, the lengths of multiple first signal line segments 312 may not be exactly the same. The first sub-segments 312a of the first signal line segment 312 are all of equal length. For signal line segments of the same length, there must be some without notches 311, namely the second sub-segments 313a of the second signal line segment 313. Therefore, the length L1 of the first sub-segment 312a and the length L2 of the second sub-segment 313a are equal.

[0071] (L1-L0)·d1 is the area of ​​the first sub-segment 312a, and L2·d2 is the area of ​​the second sub-segment 313a. Since |(L1-L0)·d1-L2·d2|≤K·(L2·d2), the absolute value of the difference between the area of ​​the first sub-segment 312a and the area of ​​the second sub-segment 313a is less than the product of the area of ​​the second sub-segment 313a and the preset error ratio. In other words, the ratio of the absolute value of the difference between the area of ​​the first sub-segment 312a and the area of ​​the second sub-segment 313a to the area of ​​the second sub-segment 313a is less than the preset error ratio. At this time, the area of ​​the first sub-segment 312a and the area of ​​the second sub-segment 313a are equal. The area difference between the two sub-segments 313a is small enough that the area of ​​the first sub-segment 312a and the area of ​​the second sub-segment 313a can be considered close. Therefore, the reflected light flux of the external light reflected by the display panel of this embodiment is close in the area corresponding to the first signal segment 312 and the area corresponding to the second signal segment 313. Thus, the difference between the reflectivity of the first signal segment 312 and the reflectivity of the second signal segment 313 can be ignored, thereby making the reflective texture of the display panel of this embodiment almost invisible when the screen is off, greatly improving the visual effect of the display panel of this embodiment.

[0072] For example, the length L1 of the first sub-segment 312a and the length L2 of the second sub-segment 313a can both be equal to 41.8 μm, the width d1 of the first sub-segment 312a can be equal to 3.4 μm, the width d2 of the second sub-segment 313a can be equal to 3 μm, and the length L0 of the notch 311 along the extension direction of the first sub-segment 312a can be equal to 5 μm.

[0073] Further reading Figure 7 The preset error ratio K is equal to 5%, which means that the difference between the area of ​​the first sub-segment 312a and the area of ​​the second sub-segment 313a does not exceed 5% of the area of ​​the second sub-segment 313a. It can be considered that the difference between the area of ​​the first sub-segment 312a and the area of ​​the second sub-segment 313a is small enough that the human eye can hardly perceive the reflective texture of the display panel of this embodiment when the screen is off, thereby improving the visual effect of the display panel of this embodiment.

[0074] Further reading Figure 7 (L1-L0)·d1=L2·d2, that is, the area of ​​the first sub-segment 312a is equal to the area of ​​the second sub-segment 313a. Therefore, the reflected light flux of the external light reflected by the display panel of this embodiment is equal in the area corresponding to the first signal segment 312 and the area corresponding to the second signal segment 313. Thus, the reflective texture of the display panel of this embodiment is almost invisible when the screen is off, which greatly improves the visual effect of the display panel of this embodiment.

[0075] Optionally, continue reading Figure 7 The first signal segment 312 includes a third sub-segment 312b, and the second signal segment 313 includes a fourth sub-segment 313b. The length L3 of the third sub-segment 312b and the length L4 of the fourth sub-segment 313b are equal. The width of the third sub-segment 312b is d3, the width of the fourth sub-segment 313b is d4, and the length of the gap 311 along the extension direction of the third sub-segment 312b is L0. Wherein, |(L3-L0)·d3-L4·d4|≤K·(L4·d4), and K is a preset error ratio.

[0076] Considering that the opening in the touch signal line 31 allows space for the pixel 21, and that pixels 21 of different colors may have different sizes, the lengths of multiple first signal line segments 312 may not be exactly the same. The lengths of the third sub-segments 312b of the first signal line segment 312 are all equal, but not equal to the length of the first sub-segment 312a. For signal line segments of the same length, there must be some without a notch 311, namely the fourth sub-segment 313b of the second signal line segment 313. Therefore, the length L3 of the third sub-segment 312b and the length L4 of the fourth sub-segment 313b are equal.

[0077] (L3-L0)·d3 is the area of ​​the third sub-segment 312b, and L4·d4 is the area of ​​the fourth sub-segment 313b. Since |(L3-L0)·d3-L4·d4|≤K·(L4·d4), the absolute value of the difference between the area of ​​the third sub-segment 312b and the area of ​​the fourth sub-segment 313b is less than the product of the area of ​​the fourth sub-segment 313b and the preset error ratio. In other words, the ratio of the absolute value of the difference between the area of ​​the third sub-segment 312b and the area of ​​the fourth sub-segment 313b to the area of ​​the fourth sub-segment 313b is less than the preset error ratio. At this time, the area of ​​the third sub-segment 312b and the area of ​​the fourth sub-segment 313b are equal. The area difference of the four sub-segments 313b is small enough that the area of ​​the third sub-segment 312b is considered to be close to the area of ​​the fourth sub-segment 313b. Therefore, the reflected light flux of the external light reflected by the display panel of this embodiment is close in the area corresponding to the first signal segment 312 and the area corresponding to the second signal segment 313. Thus, the difference between the reflectivity of the first signal segment 312 and the reflectivity of the second signal segment 313 can be ignored, thereby making the reflective texture of the display panel of this embodiment almost invisible when the screen is off, greatly improving the visual effect of the display panel of this embodiment.

[0078] For example, the length L3 of the third sub-segment 312b and the length L4 of the fourth sub-segment 313b can both be equal to 33.95 μm, the width d3 of the third sub-segment 312b can be equal to 3.5 μm, the width d2 of the fourth sub-segment 313b can be equal to 3 μm, and the length L0 of the notch 311 along the extension direction of the third sub-segment 312b can be equal to 5 μm.

[0079] Further reading Figure 7 The preset error ratio K is equal to 5%, which means that the difference between the area of ​​the third sub-segment 312b and the area of ​​the fourth sub-segment 313b does not exceed 5% of the area of ​​the fourth sub-segment 313b. It can be considered that the difference between the area of ​​the third sub-segment 312b and the area of ​​the fourth sub-segment 313b is small enough that the human eye can hardly perceive the reflective texture of the display panel of this application embodiment when the screen is off, thereby improving the visual effect of the display panel of this application embodiment.

[0080] Further reading Figure 7 (L3-L0)·d3=L4·d4, meaning that the area of ​​the third sub-segment 312b is equal to the area of ​​the fourth sub-segment 313b. Therefore, the reflected light flux of the external light reflected by the display panel of this embodiment is equal in the area corresponding to the first signal segment 312 and the area corresponding to the second signal segment 313. Thus, the reflective texture of the display panel of this embodiment is almost invisible when the screen is off, greatly improving the visual effect of the display panel of this embodiment.

[0081] Figure 8 for Figure 1 Another enlarged view of the display panel in region S, which reduces the visibility of textures when the screen is off, according to an embodiment of this application.

[0082] Further, please refer to Figure 8 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 plurality of pixel group areas A, the ratio of the area of ​​the touch signal line 31 projected onto the plane of the substrate 1 to the area of ​​the pixel group area A projected onto the plane of the substrate 1 is equal.

[0083] 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.

[0084] In different pixel group areas A, the ratio of the area of ​​the touch signal line 31 projected onto the plane of the substrate 1 to the area of ​​the pixel group area A projected onto the plane of the substrate 1 is equal. This means that different pixel group areas A have the same reflected light flux. Therefore, the display panel of this embodiment has almost the same reflectivity of external light in different pixel group areas A. Considering the size of a single pixel 21, the size of the pixel group area 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 of any embodiment of this application is almost the same in different pixel group areas A, the human eye cannot directly observe the reflection ripples caused by the reflection of external light by the display panel of this embodiment. It should be noted that the positions of the first signal line segment 312 with notches 311 in different pixel group areas A can be the same or different. For ease of explanation, this embodiment uses the example of the first signal line segment 312 with notches 311 in different pixel group areas A having the same position.

[0085] Further reading Figure 8 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; and within the plurality of pixel group areas A, the number of first signal segments 312 whose width is greater than the width of the second signal segment 313 is equal.

[0086] The structure of pixel group region A has been described in the previous embodiments and will not be repeated here.

[0087] In different pixel group areas A, the number of first signal segments 312 with a width greater than the width of the second signal segment 313 is equal. This means that different pixel group areas A have the same reflected light flux. Therefore, the display panel of this embodiment has almost the same reflective ability to external light in different pixel group areas A. Considering the size of a single pixel 21, the size of the pixel group area A corresponding to multiple pixels 21 is usually close to the smallest size that the human eye can perceive. Therefore, when the reflective ability of the display panel of any embodiment of this application to external light is almost the same in different pixel group areas A, the human eye cannot directly observe the reflection ripples caused by the reflection of external light by the display panel of this embodiment. It should be noted that the positions of the first signal segments 312 with notches 311 in different pixel group areas A can be the same or different. For ease of explanation, this embodiment uses the example of the first signal segments 312 with notches 311 in different pixel group areas A having the same position.

[0088] It should be emphasized that, given that the human eye can hardly observe the difference in the reflected light flux of different positions within a certain pixel group area A, there may be a first signal line segment 312 that has not been widened within the same pixel group area A, but the number of widened signal line segments should be equal.

[0089] Figure 9 This is a schematic diagram of the structure of a display device according to an embodiment of this application.

[0090] Please see Figure 9 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.

[0091] This application provides a display panel and display device for reducing the visibility of textures when the screen is off. The display panel for reducing the visibility of textures when the screen is off includes a substrate, a light-emitting layer, and a touch-sensitive layer. The substrate, the light-emitting layer, and the touch-sensitive layer are stacked sequentially. A first signal segment and a second signal segment of a touch signal line are electrically connected for transmitting touch signals. The first signal segment has multiple notches to reduce the impact of parasitic capacitance caused by the touch signal line on the accuracy of the touch signal. At least one first signal segment has a width greater than the width of the second signal segment, which is equivalent to increasing the width of the first signal segment and thus increasing its area, thereby reducing the area difference between the first and second signal segments. Therefore, when the display panel of this application is in a screen-off state, the difference in the reflectivity of the first signal segment with notches and the second signal segment to reflect external light is reduced, thereby weakening the reflective textures caused by the difference in reflectivity and reducing the visibility of reflective textures when the screen is off, thus improving the visual effect of the display panel of this application.

[0092] 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 that reduces the visibility of textures when the screen is off, 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 and an encapsulation layer; at least a portion of the encapsulation layer is disposed on the side of the touch signal lines facing away from the substrate, and the reflectivity of the encapsulation layer is less than the reflectivity of the touch signal lines; the touch signal lines include a plurality of first signal segments and a plurality of second signal segments, the first signal segments and the second signal segments are electrically connected, the orthographic projection of the first signal segments on the plane of the substrate is spaced apart from the orthographic projection of the pixel on the plane of the substrate, and the orthographic projection of the second signal segments on the plane of the substrate is spaced apart from the orthographic projection of the pixel on the plane of the substrate; the first signal segments have notches, and the width of at least one first signal segment is greater than the width of the second signal segment.

2. The display panel for reducing the visibility of textures when the screen is off, as described in claim 1, is characterized in that, The width of the first signal line segment is D1, the width of the second signal line segment is D2, and the length of the gap along the extension direction of the first signal line segment is L0, wherein D1 / D2 is positively correlated with L0; Preferably, 0.2μm≤D1-D2≤0.25μm.

3. The display panel for reducing the visibility of textures when the screen is off, as described in claim 1, is characterized in that... The first signal segment includes a first sub-segment, and the second signal segment includes a second sub-segment. The length L1 of the first sub-segment and the length L2 of the second sub-segment are equal. The width of the first sub-segment is d1, the width of the second sub-segment is d2, and the length of the notch along the extension direction of the first sub-segment is L0. Where, |(L1-L0)·d1-L2·d2|≤K·(L2·d2), K is the preset error ratio; Preferred, K = 5%; Preferably, (L1-L0)·d1=L2·d2.

4. The display panel for reducing the visibility of textures when the screen is off, as described in claim 1, is characterized in that, The first signal segment includes a third sub-segment, and the second signal segment includes a fourth sub-segment. The length L3 of the third sub-segment and the length L4 of the fourth sub-segment are equal. The width of the third sub-segment is d3, the width of the fourth sub-segment is d4, and the length of the gap along the extension direction of the third sub-segment is L0. Where, |(L3-L0)·d3-L4·d4|≤K·(L4·d4), K is the preset error ratio; Preferred, K = 5%; Preferably, (L3-L0)·d3=L4·d4.

5. The display panel for reducing the visibility of textures when the screen is off, as described in claim 1, is 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 touch signal line projected onto the plane of the substrate to the area of ​​the pixel group area projected onto the plane of the substrate is equal.

6. The display panel for reducing the visibility of textures when the screen is off, as described in claim 1, is 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 number of first signal segments whose width is greater than the width of the second signal segment is equal.

7. The display panel for reducing the visibility of textures when the screen is off, as described in claim 1, is characterized in that, At least one of the widths of the first signal segment is equal to the width of the second signal segment.

8. The display panel for reducing the visibility of textures when the screen is off, as described in claim 1, is 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, multiple notches are arranged along a first direction.

9. The display panel for reducing the visibility of textures when the screen is off, as described in claim 1, is 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, some of the gaps are arranged along a first direction to form a gap column, and the number of gap columns is two. The two gap columns are arranged along a second direction, and the first direction and the second direction intersect.

10. A display device, characterized in that, The display panel that reduces the visibility of textures when the screen is off, as described in any one of claims 1 to 9.

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