Display panel, display screen and electronic device

Abstract

The application provides a display panel, a display screen and an electronic device, and relates to the technical field of display screens. The display panel provided by the application comprises a first region, a second region and a third region, the second region is located between the first region and the third region, the first region is used for display, the third region is used for connecting with a screen cover plate, a plurality of first wires are arranged in the second region, a spacing is arranged between adjacent first wires, each first wire comprises a plurality of metal wires, and the metal wires are cross-connected to form a grid wire. By arranging a plurality of first wires in the second region, the first wires adopt the grid wires formed by cross-connection of a plurality of metal wires, the reflectivity and visibility of the entire grid wire can be reduced while reducing the resistance of the first wire, the user can avoid directly seeing the first wire in the OLED screen, and the use experience of the user is improved.

Description

Technical Field

[0001] This application belongs to the field of display technology, and more specifically, relates to a display panel, display screen and electronic device. Background Technology

[0002] In recent years, with the rapid development of OLED screens, they have been widely used in electronic products such as smartphones, tablets, laptops, televisions, and monitors. An OLED screen consists of a display panel and a cover glass. To protect the display panel, a cover glass is attached to the surface of the OLED screen.

[0003] OLED screens consist of an emitting area, primarily used for displaying images. The cover glass consists of a translucent area; when the cover glass is attached to the OLED screen, the content displayed by the emitting area can be shown to the outside world through the translucent area. However, due to bonding precision requirements, the translucent area of ​​the cover glass is generally slightly larger than the emitting area of ​​the OLED screen to avoid obstructing it.

[0004] OLED screens typically also feature metal traces, which are usually positioned along the edges of the light-emitting area. To reduce the resistance of these traces, their linewidth is generally quite wide. Because the light-transmitting area is larger than the light-emitting area, users can easily see the traces surrounding the light-emitting area through the light-transmitting area. Furthermore, since metal traces are generally reflective, the metal traces positioned at the edges of the light-emitting area can create a bright line, negatively impacting the user experience. Summary of the Invention

[0005] The purpose of this application is to provide a display panel, display screen, and electronic device to solve the technical problem in the prior art where the traces arranged around the light-emitting area of ​​an OLED screen may form a bright line that is easily seen by the user and affects the user experience.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] In a first aspect, this application provides a display panel, including a first region, a second region, and a third region. The first region is the display area of ​​the display panel, and the second regions are located on both sides of the first region. The third region is an annular region outside the first region, with the second regions located between the first and third regions. The third region is an ink area of ​​the display panel. A touch electrode is provided in the first region, multiple first traces are provided in the second region, and second traces are provided in the third region. The first traces are connected to the touch electrode, and the second traces are connected to the first traces. A gap is provided between any two adjacent first traces. Each first trace includes multiple metal lines, which are interlaced to form a grid trace. The width of the metal lines is the same as the width of the touch electrode, and the width of the grid trace is the same as the width of the second trace.

[0008] Building upon this, the display panel of this application incorporates multiple first traces in the second region. These first traces are formed by interlacing multiple metal wires to create a grid pattern. The grid pattern has a certain width, ensuring that the resistance of the first traces is not affected, thus allowing them to meet the relevant usage requirements. Furthermore, due to the use of a grid pattern, the metal wires within the grid can be relatively fine, and the grid formed between the metal wires is hollow. This reduces the reflectivity and visibility of the entire grid pattern, preventing users from directly seeing the first traces on the OLED screen and improving the user experience.

[0009] In one possible design approach of the first aspect, the linewidth of the metal wire is less than or equal to 3 μm.

[0010] Based on this, by setting the linewidth of the metal lines to be less than or equal to 3μm, the linewidth of the metal lines is made smaller, resulting in thinner overall metal lines and reduced reflectivity, thereby reducing the overall reflectivity of the mesh traces. This avoids the formation of bright bars around the first area of ​​the mesh traces, which would negatively impact the user experience.

[0011] In one possible design approach of the first aspect, the area of ​​the metal wire in the first trace accounts for less than 30%.

[0012] Based on this, this application controls the visibility of the first trace by controlling the area ratio of the metal wires in the first trace. When the area ratio of the metal wires in the first trace is low, the user is less likely to see the grid traces formed by the metal wires, that is, the first trace set on the display panel is less likely to be seen. This application achieves the above objective by controlling the area ratio of the metal wires in the first trace to be less than 30%. Of course, in practical applications, the area ratio of the metal wires in the first trace can be controlled according to specific needs, so that the user is less likely to see the first trace.

[0013] In one possible design of the first aspect, the spacing between two adjacent first traces is 3 μm to 5 μm.

[0014] Based on this, this application provides multiple first traces in the second region, with different first traces used to connect different ports. To prevent short circuits caused by contact between multiple first traces, a spacing is provided between adjacent first traces. Simultaneously, to accommodate as many first traces as possible in the second region, the spacing between the first traces needs to be controlled. In this application, the spacing between adjacent first traces is set to 3μm to 5μm, which ensures sufficient spacing between the two first traces while maximizing the number of first traces and maintaining the uniformity of the first traces in the second region.

[0015] In one possible design approach of the first aspect, the shape of the grid formed between the multiple metal wires is rectangular, square, or rhomboid.

[0016] Based on this, in this application, the first trace is a grid trace formed by multiple metal lines. Using a grid trace can reduce the resistance of the first trace and simultaneously reduce its visibility. The shape of the grid formed by the metal lines can be rectangular, square, or rhomboid. Of course, it can also be other shapes, such as parallelograms, polygons, or other irregular shapes. This application does not limit the specific shape of the grid formed by the metal lines.

[0017] In one possible design approach of the first aspect, the mesh shape of each first trace is the same.

[0018] Based on this, since multiple first traces are set in the second area, and each first trace adopts a grid trace form, multiple first traces can use the same grid trace specification for ease of processing and manufacturing. That is, the grid shape of each first trace is the same. Of course, in one design of this application, the grid shapes of multiple first traces can also be different. In specific applications, the principle is to not affect the performance of the first traces and not affect their visibility.

[0019] In one possible design approach of the first aspect, the spacing between two adjacent first traces is the same.

[0020] Based on this, by setting the spacing between two adjacent first lines to be the same, multiple first lines can maintain a uniform spacing, thereby maintaining the uniformity of the first lines in the second area.

[0021] In one possible design of the first aspect, a touch electrode is provided in the first region, the touch electrode is in the form of a grid, and the grid shape of the first trace is the same as the grid shape of the touch electrode.

[0022] Based on this, since the first area is the display area of ​​the display panel, multiple traces, referred to as touch electrodes in this application, are generally provided within the first area. The touch electrodes are generally arranged in a grid pattern, and since the first traces are also located on the display panel, both are grid-shaped. Therefore, the grid shape of the first traces can be set to be the same as the grid shape of the touch electrodes.

[0023] Secondly, this application provides a display screen, including a screen cover and a display panel provided by the first aspect and any possible design thereof. The screen cover is attached to the display side of the display panel. The screen cover includes a light-transmitting area and a light-blocking area. The orthographic projection of the light-transmitting area on the display panel covers the first area, and the orthographic projection of the light-blocking area on the display panel overlaps with the second area and the third area.

[0024] Thirdly, this application provides an electronic device, including a body and a display screen provided by the second aspect and any possible design thereof, the display screen being fixedly connected to the body.

[0025] It is understood that the beneficial effects achieved by the display screen provided in the second aspect and the electronic device provided in the third aspect can be referred to as the beneficial effects in the first aspect and any of its possible design embodiments, which will not be repeated here.

[0026] The beneficial effects of the display panel provided in this application are as follows: Compared with the prior art, the display panel of this application sets multiple first traces in the second area. The first traces adopt a grid trace formed by multiple metal wires interlaced and connected. The grid trace has a certain width, which can ensure that the resistance of the first traces is not affected, so that the first traces can meet the corresponding usage requirements. At the same time, because a grid trace is used, the metal wires in the grid trace can be relatively fine, and the grid formed between the metal wires is hollow, which can reduce the reflectivity and visibility of the entire grid trace, prevent users from directly seeing the first traces in the OLED screen, and improve the user experience. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art 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.

[0028] Figure 1 A schematic diagram of the structure of a display screen provided in an embodiment of this application;

[0029] Figure 2 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application;

[0030] Figure 3 for Figure 2 A partial structural diagram at point A in the middle;

[0031] Figure 4 This is a schematic diagram of the structure of a first trace in a display panel provided in an embodiment of this application.

[0032] The following are the labeling elements in the figure:

[0033] 100 - Display panel; 200 - Screen cover; 110 - First area; 120 - Second area; 130 - Third area; 140 - First trace; 141 - Metal line; 142 - Grid. Detailed Implementation

[0034] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0035] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0036] It should be understood that the terminology used in the description of the various examples herein is for the purpose of describing the particular examples only and is not intended to be restrictive. As used in the description of the various examples, the singular forms “a” and “the” are intended to include the plural forms as well, unless the context explicitly indicates otherwise.

[0037] In the embodiments of this application, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be a single item or multiple items.

[0038] It should also be understood that, in this application, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a sliding connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0039] It should also be understood that the term “comprising” (also referred to as “includes”, “including”, “comprises” and / or “comprising”) as used in this specification specifies the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0040] It should be understood that the terms "an embodiment," "another embodiment," and "a possible design" used throughout the specification mean that a specific feature, structure, or characteristic related to an embodiment or implementation is included in at least one embodiment of this application. Therefore, phrases such as "in one embodiment of this application," "in another embodiment of this application," and "a possible design" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0041] This application provides an electronic device. This electronic device is a terminal device with an OLED screen. Exemplarily, the electronic device can be a mobile phone, tablet computer, laptop computer, or other terminal device. This application does not impose any special limitations on the specific form of the aforementioned electronic device. In this application, a mobile phone is used as an example for illustration.

[0042] The following is an example of an OLED screen. Please refer to... Figure 1 , Figure 1 This is a schematic diagram of a display screen provided in an embodiment of this application. The display screen in this embodiment is an OLED screen.

[0043] OLED screens are used to display images, videos, etc. For example... Figure 1 As shown, an OLED screen may include a display panel 100 and a screen cover 200. The screen cover 200 may be connected to the display panel 100 by adhesive bonding, and the screen cover 200 is connected to the display side of the display panel 100.

[0044] The screen cover 200 is mainly used to protect the display panel 100 and to provide dust and water protection. The screen cover 200 is generally made of transparent glass, but it can also be made of other light-transmitting materials.

[0045] The display panel 100 includes a display area for displaying text, images, videos, etc., and a wiring area for arranging wiring is provided outside the display area. By arranging multiple wirings in the wiring area, the electronic components in the display area can be connected to other electronic components, and wirings for testing can also be arranged.

[0046] The area between the outer edge of the wiring area and the edge of the display panel 100 is generally called the ink area. The ink area is printed with an ink layer, the main function of which is to shield the light emitted from the display substrate and prevent light leakage from the screen edges, thereby improving the display effect and visual experience. In some cases, there may be a certain gap between the ink layer of the ink area and the screen cover 200. The optical adhesive (such as OCA adhesive) filling the gap between the display panel 100 and the screen cover 200 can fill the gap, making the screen structure smoother.

[0047] The display panel 100 includes a display area, primarily used for displaying images. The screen cover 200 includes a light-transmitting area. When the screen cover 200 is attached to the display panel 100, the content displayed in the display area of ​​the display panel 100 can be displayed to the outside through the light-transmitting area. However, due to the bonding precision requirements, the light-transmitting area of ​​the screen cover 200 is generally slightly larger than the display area of ​​the display panel 100 to prevent the corresponding ink area on the screen cover 200 from obstructing the display area of ​​the display panel 100.

[0048] Since metal traces are also arranged in the wiring area on the display panel 100, these metal traces are typically arranged along the edge of the display area. To reduce the resistance of the traces, the line width of the metal traces is generally set relatively wide. Because the metal traces are relatively wide and generally have reflective properties, the wide metal traces located at the edge of the display area will form a bright line when reflected light. Furthermore, because the light-transmitting area is larger than the display area, when the metal traces reflect light, users can easily see the traces arranged around the display area through the light-transmitting area, affecting the user experience.

[0049] To address the aforementioned problems, this application provides a display panel 100. (See reference...) Figure 2 Figure 3 and Figure 4 , Figure 2 This is a schematic diagram of the structure of a display panel 100 provided in an embodiment of this application. Figure 3 for Figure 2 A partial structural diagram at point A is shown in Figure 4. Figure 4 is a structural diagram of the first trace 140 in a display panel 100 provided in an embodiment of this application.

[0050] In one embodiment of this application, a display panel 100 is provided, such as... Figure 2As shown, the display panel 100100 includes a first region 110, a second region 120 and a third region 130. The first region 110 is the display area of ​​the display panel 100. The second regions 120 are provided on both sides of the first region 110. The third region 130 is an annular area outside the first region 110. The second region 120 is located between the first region 110 and the third region 130. The third region 130 is the ink area of ​​the display panel 100.

[0051] The two sides of the first region 110 can refer to the top and bottom sides of the first region 110, or the left and right sides of the first region 110. In this embodiment, the second region 120 is generally referred to as the wiring area of ​​the display panel 100. It should be noted that, in addition to the second region 120, other regions may also have wiring.

[0052] A touch electrode (not shown in the figure) is provided in the first region 110, multiple first traces 140 are provided in the second region 120, and a second trace (not shown in the figure) is provided in the third region 130. The first traces 140 are connected to the touch electrode, and the second traces are connected to the first traces 140. Figure 3 As shown, a spacing is provided between any two adjacent first traces 140. Figure 4 As shown, each first trace 140 includes multiple metal lines 141, which are interlaced to form a grid trace. The width of the metal lines 141 is the same as the width of the touch electrode, and the width of the grid trace is the same as the width of the second trace. The touch electrode is a key component for implementing touch functionality on a touchscreen. It can sense the user's touch actions and convert information such as the touch position into electrical signals, thereby enabling the device to make corresponding responses, such as swiping the screen and clicking icons on a mobile phone, and performing handwriting input on a tablet computer. The first trace 140 is connected to the touch electrode, and the second trace is connected to the first trace 140. The first trace 140 and the second trace are used to transmit touch signals to the corresponding electronic components.

[0053] By setting the width of the metal line 141 in the first trace 140 to be the same as the width of the touch electrode, and since the touch electrode is located in the first region 110 and the first trace 140 is located in the second region 120, this arrangement ensures that the display effect of the second region 120 is as consistent as possible with that of the first region 110, avoiding any impact on the overall display effect of the display panel 100. Similarly, setting the width of the grid trace (first trace 140) to be the same as the width of the second trace also has a similar effect, ensuring that the display effects of the second region 120 and the third region 130 are as consistent as possible.

[0054] It should be noted that, in this embodiment, the first region 110, the second region 120, and the third region 130 are all partial regions on the display panel 100, and the entirety formed by the first region 110, the second region 120, and the third region 130 constitutes the area where the display side of the display panel 100 is located. Among them, the second region 120 is located between the first region 110 and the third region 130.

[0055] In this embodiment, the second trace in the third region 130 can be a grid trace like the first trace 140, or it can be a metal trace made of a wider metal line 141. This is because the second trace is located in the third region 130, which is an ink area. Even though the metal trace is more reflective than the grid trace, the ink layer in the third region 130 makes it difficult for the user to see the metal trace (second trace). Therefore, using a metal trace for the second trace does not affect the display effect of the display panel 100.

[0056] It should be noted that, in this embodiment, since the first trace 140 and the second trace are connected, in practical applications, the first trace 140 and the second trace may be a single unit. The first trace 140 uses a mesh trace, while the second trace can use either a mesh trace or a metal trace. Therefore, in practical applications, when the first trace 140 and the second trace are a single unit, it is sufficient to ensure that the portion of the trace located in the second region 120 is a mesh trace, and the portion located in the third region 130 is either a mesh trace or a metal trace, to achieve the requirements of this embodiment.

[0057] In this embodiment of the application, by setting multiple first traces 140 in the second region 120, the first traces 140 adopt a grid trace formed by multiple metal wires 141 interlaced and connected. The grid trace can be set to a grid trace with a certain width as needed, thereby reducing the resistance of the first traces 140 and enabling the first traces 140 to meet the corresponding usage requirements.

[0058] For example, the width of the mesh trace can be the same as, slightly wider than, or slightly narrower than the width of the existing metal trace. This is to ensure that the first trace 140 meets the relevant resistance requirements when in use. In this embodiment, the specific width of the mesh trace is not limited. In specific applications, the width of the mesh trace can be designed according to its performance and corresponding trace resistance requirements, so that the mesh trace can achieve the desired performance.

[0059] In this embodiment of the application, the first trace in the OLED display panel is set as a grid trace, which has the following advantages:

[0060] Mesh routing allows current to be distributed more evenly to each pixel, ensuring a stable and consistent current supply to each pixel. This results in a more uniform light emission effect, reduces brightness differences and color deviations on the screen, and improves display quality. It also achieves uniform current distribution and improves electrical performance.

[0061] Compared to other wiring methods, mesh wiring can effectively reduce line resistance, reduce energy loss and heat generation during current transmission, improve power utilization efficiency, and extend the lifespan of the screen.

[0062] The mesh structure has good flexibility and tensile strength, which can evenly distribute stress throughout the mesh when the screen is subjected to external impact or bending, reduce the risk of local stress concentration, reduce the possibility of line breakage or screen damage caused by stress, improve the mechanical reliability of the screen, and enhance mechanical stability.

[0063] For flexible OLED screens, the grid wiring can better adapt to bending, folding and other deformation operations of the screen, maintain good electrical connection performance, and ensure normal display under different usage conditions.

[0064] The layout of the grid traces is relatively regular and simple, making it easier to perform photolithography, etching and other processes during manufacturing, which helps to improve production efficiency and yield, and reduce manufacturing costs.

[0065] The regular grid structure facilitates electrical testing and troubleshooting during production. Once a problem occurs, it is easier to locate and repair the fault point, thus improving the maintainability of the product.

[0066] Mesh wiring typically uses thinner lines and a reasonable layout, which can reduce the obstruction of the pixel light-emitting area, improve the screen's light transmittance and aperture ratio, and make the screen display brighter, clearer, and more vibrant in color.

[0067] A well-designed grid pattern can avoid optical diffraction and scattering, reduce optical interference to the displayed image, and improve image contrast and clarity.

[0068] In the embodiments of this application, such as Figure 4As shown, since multiple metal wires 141 are interconnected to form a grid trace, the width of each metal wire 141 is smaller than the width of the grid trace. In practical applications, thinner metal wires 141 can be used to interconnect to form the grid trace. Because the metal wires 141 are thinner, their reflectivity is lower than that of metal wires 141 with the same width as the grid trace, which helps to reduce the visibility of the entire grid trace. Furthermore, since the grid 142 formed between the metal wires 141 is hollow, the hollow grid 142 does not produce reflection. This further reduces the reflectivity of the grid trace, thereby reducing its visibility.

[0069] In summary, by using a grid of interconnected metal wires 141 to form the first trace 140, the reflectivity of the first trace 140 can be greatly reduced while ensuring its resistivity, thus reducing its visibility and preventing users from directly seeing the first trace 140 in the OLED screen through the light-transmitting area of ​​the screen cover 200, thereby improving the user experience.

[0070] In one embodiment of this application, the linewidth of the metal lines 141 in the first trace 140 is less than or equal to 3 μm. In this embodiment, the fine metal lines 141 are used to form a grid of traces as the first trace 140 in the display panel 100. The fine metal lines 141 help reduce reflectivity. In practical applications, the specific width range of the metal lines 141 can be set to minimize the visibility of the metal lines 141.

[0071] Typically, the linewidth of the grid traces in an OLED display panel is not a fixed value and is affected by a variety of factors. For example, it is affected by the display panel's resolution, current carrying capacity requirements, and manufacturing process level.

[0072] In high-resolution OLED display panels with high pixel density, the linewidth of the grid traces is typically designed to be finer to ensure sufficient space for pixel electrodes and other components. For example, in some high-resolution OLED screens used in mobile phones, the grid trace width may be a few micrometers or even smaller. Conversely, for display panels with lower resolution and larger pixel sizes, the linewidth can be appropriately wider.

[0073] In OLED display panels, if a large current needs to be transmitted to drive the pixels to emit light, the traces need to have a sufficient cross-sectional area to reduce resistance and prevent the traces from overheating or even being damaged due to excessive current. In this case, the linewidth will be relatively wider.

[0074] In addition, advanced manufacturing processes such as photolithography enable finer processing, allowing for the creation of finer traces.

[0075] The finer the metal wire, the smaller the display area occupied by the trace, and the higher the pixel aperture ratio (the ratio of the pixel's light-emitting area to the total pixel area). A high aperture ratio means more light can pass through the pixel area, making the display panel brighter and the colors more vibrant. When displaying images, it can present higher contrast and richer color details, enhancing the user's visual experience.

[0076] The use of thin metal lines allows for the arrangement of more pixels and circuitry within a limited panel space, resulting in higher pixel density and resolution. This is crucial for devices requiring high-definition displays, such as smartphones, tablets, and high-definition monitors. For example, on a mobile phone screen, high resolution makes text appear sharper and clearer, and images and videos richer in detail.

[0077] The relatively large spacing between finer grid traces effectively reduces capacitive coupling and electromagnetic interference between traces, improving the stability and reliability of signal transmission. This helps reduce abnormal phenomena such as flickering and color shift in the display panel, ensuring consistent display quality.

[0078] However, wider traces in the metal wiring result in lower resistance, enabling more efficient current transmission and reducing current loss and voltage drop during transmission. This is especially important for OLED panels that need to drive large pixels or high-brightness displays. In large-size OLED TVs, wider grid traces ensure that each pixel receives sufficient current, achieving a uniform light emission effect.

[0079] The use of wider metal lines makes the mesh wiring easier to control during manufacturing and allows it to withstand greater mechanical and thermal stresses. This reduces the risk of wiring breakage or damage caused by external factors, improving the reliability and lifespan of the display panel. Therefore, in practical applications, the specific line width can be selected according to requirements.

[0080] In this embodiment, the line width of the metal line 141 is set to be less than or equal to 3μm. Metal lines 141 with a width of less than 3μm are relatively small, making the overall metal line 141 quite thin. This minimizes the reflectivity of the metal line 141, thereby reducing the overall reflectivity of the mesh wiring. This prevents the mesh wiring from forming bright stripes around the first area 110, which would negatively impact the user experience.

[0081] In one embodiment of this application, as Figure 4 As shown, the area ratio of the metal line 141 in the first trace 140 is less than 30%.

[0082] There is no fixed standard value for the area ratio of metal lines in the grid traces of an OLED display panel. It is affected by a variety of factors, such as the resolution of the display panel, the area where the grid traces are located, the driving method and circuit design, and the level of manufacturing process.

[0083] For example, in high-resolution OLED display panels with high pixel density, the metal traces are designed to be more delicate in order to drive more pixels within a limited space. The area occupied by the metal traces is relatively low, perhaps around 5%-10%. For instance, some high-resolution OLED screens used in mobile phones can reach hundreds of pixels per inch (ppi), and their metal trace area ratio is relatively low to ensure display performance and aperture ratio under high pixel density. Conversely, for low-resolution OLED display panels with larger pixel sizes, the metal traces are relatively thicker, and their area ratio may reach around 10%-15%.

[0084] The location of the mesh traces also affects the proportion of metal lines in the display panel. In non-display areas such as the bezel, where pixel emission and aperture ratio are not a concern, the metal traces can be thicker to meet electrical performance and mechanical strength requirements, resulting in a relatively high area ratio for the metal lines. In the display area, to improve light transmittance and pixel aperture ratio, the metal traces are kept as thin and sparse as possible, resulting in a relatively low area ratio. For example, in some OLED panels with narrow bezel designs, the metal trace area in the bezel region can reach 20%-30%, while the area in the display region is controlled at around 5%-10%.

[0085] Furthermore, advanced manufacturing processes enable finer metal trace processing, thereby reducing the width and spacing of metal lines and decreasing the area occupied by metal lines. With continuous advancements in semiconductor manufacturing processes, such as the increasing resolution of photolithography, OLED display panels can achieve even smaller metal line widths and spacings, allowing the metal line area ratio to be kept low. For example, OLED panels using advanced photolithography can achieve metal line widths at the micrometer or even sub-micrometer level, effectively reducing the metal line area ratio to approximately 5%-10%. In some specialized OLED display technologies, such as under-display camera technology, the area ratio of metal traces is minimized to increase the light transmittance in the camera area.

[0086] Since the reflectivity of a mesh trace is largely related to the proportion of metal lines 141 within the entire mesh trace, the proportion of the total area of ​​metal lines 141 in the mesh trace also has a significant impact on its reflectivity. That is, for mesh traces of the same size, the higher the mesh density, the larger the area proportion of metal lines 141, and the stronger the reflectivity of the mesh trace; conversely, the lower the mesh density, the smaller the area proportion of metal lines 141, and the weaker the reflectivity of the mesh trace.

[0087] This application embodiment controls the visibility of the first trace 140 by controlling the area ratio of the metal lines 141 in the first trace 140. When the area ratio of the metal lines 141 in the first trace 140 is low, the user is less likely to see the grid trace formed by the metal lines 141, that is, the first trace 140 disposed on the display panel 100 is less likely to be seen. Specifically, by controlling the area ratio of the metal lines 141 in the first trace 140 to be less than 30%, the reflectivity of the entire grid trace is weak, making it less likely to be seen by the user, thereby achieving the purpose of reducing the visibility of the grid trace.

[0088] It should be noted that the area ratio of the metal wires 141 in the first trace 140 refers to the ratio between the total area of ​​all metal wires 141 on the plane containing the length and width of the grid trace and the area of ​​the grid trace on that plane. Of course, in practical applications, the area ratio of the metal wires 141 in the first trace 140 can be controlled according to specific needs. For example, in this embodiment, the area ratio of the metal wires 141 in the first trace 140 can be set to 25%, 20%, 15%, etc. Setting a lower area ratio of the metal wires 141 in the first trace 140 helps to further reduce the visibility of the first trace 140. The specific area ratio of the metal wires 141 in the first trace 140 should be such that the user cannot easily see the first trace 140. Of course, the conductivity of the first conductor should also be considered, for example, keeping the resistance of the first trace 140 within a reasonable range.

[0089] In one embodiment of this application, the spacing between two adjacent first traces 140 is 3μm to 5μm. In this embodiment, since multiple first traces 140 are provided in the second region 120, different first traces 140 are used to connect different ports. To avoid short circuits caused by contact between multiple first traces 140, a spacing is provided between adjacent first traces 140. Simultaneously, to arrange as many first traces 140 as possible in the second region 120 and improve the trace arrangement rate in the second region 120, the spacing between the first traces 140 needs to be controlled.

[0090] In one embodiment of this application, the spacing between two adjacent first traces 140 is set to 3μm to 5μm, which not only ensures the spacing between the two first traces 140, but also allows for the arrangement of as many first traces 140 as possible, and helps to maintain the uniformity of the first traces 140 within the second region 120.

[0091] The spacing between two adjacent first traces 140 is set to 3μm, 3.5μm, 4μm, 4.5μm, or 5μm. Of course, the spacing can also be set according to actual needs. For example, it can be set based on the number of first traces 140 to be arranged in the second area 120. When the number of first traces 140 to be arranged is large, the spacing between two adjacent first traces 140 can be appropriately reduced. When the number of first traces 140 to be arranged is small, the spacing between two adjacent first traces 140 can be appropriately increased.

[0092] In one embodiment of this application, as Figure 4 As shown, the grid 142 formed between multiple metal wires 141 is rectangular, square, or rhomboid in shape.

[0093] It should be noted that the specific shape of the grid 142 formed by the metal wires 141 is not limited in this embodiment. In this embodiment, the first trace 140 is a grid trace formed by multiple metal wires 141. Regardless of the shape of the grid 142 in the grid trace, the goal is to reduce the resistance of the first trace 140 and reduce its visibility. In practical applications, for ease of production and processing, the shape of the grid trace is generally set to a regular shape. For example, the shape of the grid 142 formed by the metal wires 141 can be a rectangle, square, or rhombus. It can also be other shapes, such as parallelograms, polygons, or other regular shapes. Of course, the shape of the grid trace can also be set to other irregular shapes.

[0094] In one embodiment of this application, as Figure 3 As shown, each first trace 140 has the same grid shape. Since multiple first traces 140 are provided in the second region 120, and each first trace 140 uses a grid pattern, for ease of manufacturing, multiple first traces 140 can use the same grid pattern. That is, each first trace 140 has the same grid shape.

[0095] Of course, in this embodiment, the mesh shapes of multiple first traces 140 may be different. In specific applications, the criteria are that the performance of the first trace 140 is not affected (for example, the resistance of the first trace 140 can meet the corresponding requirements) and its visibility is not affected.

[0096] In one embodiment of this application, as Figure 3 As shown, the spacing between two adjacent first traces 140 is the same.

[0097] When multiple first routing lines 140 are arranged in the second area 120, the spacing between two adjacent first routing lines 140 is set to be the same, so that multiple first routing lines 140 can maintain a uniform spacing, thereby maintaining the uniformity of the first routing lines 140 in the second area 120.

[0098] In one embodiment of this application, a touch electrode is provided in the first region 110. The touch electrode is in the shape of a grid, and the grid shape of the first trace 140 is the same as the grid shape of the touch electrode.

[0099] Since the first region 110 is the display area of ​​the display panel 100, multiple traces are generally provided within the first region 110. For ease of description in this embodiment, these are referred to as touch electrodes. The touch electrodes in the first region 110 generally form a grid shape. Since both the first trace 140 and the touch electrodes are disposed on the display panel 100, and both are grid-shaped, the grid shape of the first trace 140 can be set to be the same as the grid shape of the touch electrodes. That is, the first trace 140 and the touch electrodes can use traces of the same specifications, which helps reduce production costs. Simultaneously, it maintains consistent display effects between the first region 110 and the second region 120.

[0100] In one embodiment of this application, a display screen is also provided, comprising a screen cover 200 and a display panel 100 provided in any of the above embodiments, wherein the screen cover 200 is attached to the display side of the display panel 100. Specifically, the screen cover 200 can be connected to the display panel 100 by adhesive, generally using a light-transmitting optical adhesive to bond the screen cover 200 and the display panel 100. The screen cover 200 includes a light-transmitting area and a non-light-transmitting area. The orthogonal projection of the light-transmitting area onto the display panel 100 covers a first area 110. That is, when the screen cover 200 is attached to the display panel, the light-transmitting area of ​​the screen cover 200 is directly opposite to the first area 110 of the display panel 100, and the light-transmitting area of ​​the screen cover 200 is the same size as the first area 110 of the display panel 100, or the light-transmitting area of ​​the screen cover 200 is slightly larger than the first area 110 of the display panel 100. The orthographic projection of the non-transparent area on the display panel 100 overlaps with the second region 120 and the third region 130. The non-transparent area is used to block the light emitted by the display substrate and prevent light leakage at the edge of the display screen.

[0101] In one embodiment of this application, an electronic device is also provided, comprising a body and a display screen provided in the above embodiments, wherein the display screen is fixedly connected to the body. Taking a mobile phone as an example, the body may include a mid-frame and a back cover, wherein the display screen is fixedly connected to one side of the mid-frame and the back cover is fixedly connected to the other side of the mid-frame.

[0102] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

[0103] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0104] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the scope of protection of this application includes the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of this application.

[0105] This document uses specific examples to illustrate the working principle and implementation method of the display panel, display screen and electronic device of this application. The above description of the embodiments is only for the purpose of helping to understand the specific settings and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation method and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

[0106] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions within the technical scope disclosed in this application should be included 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, It includes a first area, a second area and a third area. The first area is the display area of ​​the display panel. The second area is provided on both sides of the first area. The third area is an annular area outside the first area. The second area is located between the first area and the third area. The third area is the ink area of ​​the display panel. The first region is provided with a touch electrode, the second region is provided with multiple first traces, and the third region is provided with a second trace. The first traces are connected to the touch electrode, and the second traces are connected to the first traces. A gap is provided between any two adjacent first traces, and each first trace includes multiple metal wires, which are interwoven to form a grid trace; The width of the metal line is the same as the width of the touch electrode, and the width of the grid trace is the same as the width of the second trace.

2. The display panel as described in claim 1, characterized in that: The linewidth of the metal wire is less than or equal to 3 μm.

3. The display panel as described in claim 1 or 2, characterized in that: The area of ​​the metal wire in the first trace is less than 30%.

4. The display panel as described in claim 3, characterized in that: The spacing between two adjacent first traces is 3μm to 5μm.

5. The display panel as described in claim 1, characterized in that: The mesh formed between the multiple metal wires is rectangular, square, or rhomboid in shape.

6. The display panel as described in claim 5, characterized in that: The mesh shape is the same for each of the first traces.

7. The display panel as described in claim 6, characterized in that: The spacing between two adjacent first traces is the same.

8. The display panel as described in claim 1, characterized in that: The first region is provided with touch electrodes, which are in the form of a grid, and the grid shape of the first trace is the same as the grid shape of the touch electrodes.

9. A display screen, comprising a screen cover and a display panel as described in any one of claims 1 to 8, characterized in that: The screen cover is attached to the display side of the display panel. The screen cover includes a light-transmitting area and a non-light-transmitting area. The orthographic projection of the light-transmitting area on the display panel covers the first area, and the orthographic projection of the non-light-transmitting area on the display panel overlaps with the second area and the third area.

10. An electronic device, characterized in that, It includes a body and a display screen as described in claim 9, wherein the display screen is fixedly connected to the body.

Images