Display panel and display device

Abstract

The present application provides a display panel and a display device, wherein the display panel has a display area and a non-display area, wherein the non-display area includes a first frame area and a second frame area; the display panel includes: a substrate, a power signal line and a drive signal line; a metal shielding layer, which is arranged in the substrate substrate, and covers the orthographic projection of the drive signal line on the substrate substrate; the metal shielding layer at least partially surrounds the display area in the second frame area, and at least partially is electrically connected to the power signal line in the first frame area; the present application can enhance the toughness of the periphery of the display panel by setting the metal shielding layer, and prevent cracks from extending toward the display area; at the same time, the metal shielding layer can shield the drive signal line in the second frame area, and is electrically connected to the power signal line to form a shielding electric field, thereby reducing the influence of light on the performance of the drive signal line, and can also shield the charge inside the display panel, which is beneficial to ensuring the product quality and performance of the display panel.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] The display panel is a key component of flexible AMOLED (Active-Matrix Organic Light Emitting Diode) products. During the production of these display panels, an inorganic film layer is typically used to form a dam structure in the non-display area of ​​the display panel. This serves to encapsulate and isolate the periphery of the display panel, thereby improving the overall quality of the product. However, due to the low toughness and poor adhesion between the inorganic film layers, the dam structure formed by the inorganic film layers is unable to effectively block the stress acting on the edge of the display panel. This can easily cause cracks to appear in the non-display area of ​​the display panel. In severe cases, the cracks may even extend into the display area of ​​the display panel, damaging the integrity of the product and affecting its overall quality and performance. Summary of the Invention

[0003] In view of this, the purpose of this application is to provide a display panel and a display device to solve some or all of the technical problems mentioned above.

[0004] Based on the above objectives, the present application provides a display panel having a display area and a non-display area, wherein the non-display area includes a first frame area located on one side of the display area, and a second frame area at least partially surrounding the display area, wherein the first frame area and the second frame area are connected to surround the display area; the display panel includes:

[0005] substrate;

[0006] A power signal line and a driving signal line, wherein the power signal line and the driving signal line are located on one side of the base substrate; the driving signal line is located in the second frame area;

[0007] A metal shielding layer is arranged in the base substrate; the orthographic projection of the metal shielding layer on the base substrate covers the orthographic projection of the driving signal line on the base substrate; the metal shielding layer is located in at least a portion of the second frame area surrounding the display area, and at least a portion of the metal shielding layer located in the first frame area is electrically connected to the power signal line.

[0008] Based on the same inventive concept, the present application also provides a display device, including the display panel as described above.

[0009] From the above, it can be seen that the display panel and display device provided by the present application can enhance the toughness and stress resistance of the periphery of the display panel by adding a metal blocking layer to the base substrate and arranging at least part of the metal blocking layer continuously in the second frame area, thereby reducing the probability of cracks in the display panel and preventing the cracks from extending toward the display area; at the same time, the metal blocking layer can block the driving signal line in the second frame area, and can be electrically connected to the power signal line in the first frame area so that the metal blocking layer forms a shielding electric field. At this time, it can block the light during the test and reduce the impact on the performance of the driving signal line during the test, and can use the shielding electric field to shield the charge in the display panel, reducing the interference and impact of the charge on the internal components of the display panel, which is beneficial to ensuring the product quality and display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in this application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are merely embodiments of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0011] Figure 1 is a cross-sectional schematic diagram of a display panel in this application;

[0012] Figure 2 is a cross-sectional schematic diagram of another display panel in this application;

[0013] Figure 3 A schematic diagram of a metal backplate provided on the backlight side of a display panel in this application;

[0014] Figure 4 A schematic diagram of the voltage threshold structure of the display panel with or without a metal backplane in this application;

[0015] Figure 5 This is a schematic diagram of the electrical connection relationship between the metal shielding layer and the power signal line in this application;

[0016] Figure 6 This is a schematic diagram of the distribution of power signal lines in this application;

[0017] Figure 7 This is a schematic diagram of the position of the metal shielding layer in this application;

[0018] Figure 8 Schematic diagram of the connection relationship between the metal shielding layer and the blocking structure in this application;

[0019] Figure 9 Schematic diagram of the positional relationship between the metal shielding layer and the first sub-power line in this application;

[0020] Figure 10 Schematic diagram of the positional relationship between the metal shielding layer and the second sub-power line in this application;

[0021] Figure 11 Schematic diagram of the connection relationship between the blocking structure and the grounding structure in this application.

[0022] Description of reference numerals:

[0023] AA, display area; NA, non-display area; 10, first border area; 11, bonding area; 20, second border area;

[0024] 100. Base substrate;

[0025] 200, power signal line; 211, first power supply unit; 212, first sub-power line; 220, second sub-power line;

[0026] 300, driving signal line;

[0027] 400, metal shielding layer;

[0028] 500, blocking structure; 510, first blocking substructure; 520, second blocking substructure;

[0029] 600, grounding structure;

[0030] 710, barrier portion; 720, Dam structure; 730, metal back plate;

[0031] 810 , first metal layer; 820 , planarization layer; 830 , second metal layer; 840 , insulation layer; 850 , touch metal layer. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of this application more clear, this application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0033] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the usual meanings understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in the embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0034] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0035] In the field of modern display technology, flexible AMOLED display panels are widely used in high-end mobile devices and wearable technologies due to their lightness, bendability and high contrast. For any display panel, the display panel can be divided into a display area AA and a non-display area NA. As for the display area AA, the display area AA is the visual information transmission area of ​​the display panel, which is used to present visual information such as images, text and videos, so that users can intuitively obtain the visual content displayed by the display device; as for the non-display area NA, the non-display area NA is continuously arranged around the display area AA, that is, the peripheral part of the display panel, which is used to cover the periphery of the display panel, play a role in encapsulating and protecting the display panel, avoiding problems such as light leakage of the display panel, and at the same time can also shield the periphery of the display panel, thereby improving the overall aesthetics of the display panel.

[0036] During the display panel manufacturing process, an inorganic film layer is typically used to form a Dam structure 720 in the non-display area NA to enhance the encapsulation effect around the display panel. Typically, the Dam structure 720 is a raised structure formed by stacking multiple inorganic film layers. This prevents external environmental factors (such as moisture and oxygen) from penetrating the display area AA, while also inhibiting the diffusion of materials within the display panel, thereby maintaining display quality. However, due to the physical properties of the inorganic film layer, the Dam structure 720 fabricated from this inorganic film layer lacks sufficient toughness. When the periphery of the display panel is subjected to external stress, it can easily cause cracks to form. Furthermore, due to the weak adhesion between the inorganic film layers, the Dam structure 720 is prone to failure when subjected to mechanical stress, resulting in cracks extending from the non-display area NA toward the display area AA, increasing the risk of damage to the display panel and affecting its integrity and normal display function.

[0037] In addition, the base substrate 100 of the display panel is typically formed of materials such as PI (Polyimide), which can provide the display panel with good flexibility and thermal stability, thereby facilitating the flexibility of the display panel. However, the base substrate 100 formed of PI material also has relatively obvious inherent defects, which can easily cause the base substrate 100 to attract and accumulate charge. Since the display panel includes a large number of TFTs (Thin Film Transistors) and serves as the pixel driving circuit of the display panel, and the TFTs are electrically connected to the drive signal lines 300, such as the GOA (scan drive signal lines), arranged in the non-display area NA through the gate drive circuit, the display panel is powered on during pre-shipment testing or application. In particular, when voltage is applied to the TFTs, the charge accumulated in the base substrate 100 gains sufficient energy and undergoes transition, interfering with the normal operation of the TFTs in the display panel, affecting the stability and response speed of the pixels in the display panel, and resulting in a decline in the display effect and overall product quality of the display panel.

[0038] In view of this, the present application provides a display panel having a display area AA and a non-display area NA, the non-display area AA including a first border area 10 located on one side of the display area AA, and a second border area 20 at least partially surrounding the display area AA, the first border area 10 and the second border area 20 being connected to surround the display area AA; the display panel includes: a base substrate 100, a power signal line 200 and a drive signal line 300, the power signal line 200 and the drive signal line 300 are located on one side of the base substrate 100; the drive signal line 300 is located in the second border area 20; it also includes a metal shielding layer 400, which is arranged in the base substrate 100; the orthographic projection of the metal shielding layer 400 on the base substrate 100 covers the orthographic projection of the drive signal line 300 on the base substrate 100; the metal shielding layer 400 is located in at least a portion of the second border area 20 surrounding the display area AA, and is at least partially located in the first border area 10 electrically connected to the power signal line 200.

[0039] like Figures 1-11As shown, the present application provides a display panel that can enhance the overall toughness and stress resistance of the display panel, and can stabilize the mobile charges in the display panel after power is applied, reduce the impact of light on the driving signal line 300 in the display panel during the display panel test, and ensure the product quality and display effect of the display panel; specifically, the display panel includes a first frame area 10 located on one side of the display area AA and a second frame area 20 that at least partially surrounds the display area AA, and the first frame area 10 and the second frame area 20 are connected to surround the display area AA; wherein, the first frame area 10 can be used as a wiring area for establishing an electrical connection between the display panel and an external circuit, and is used to provide an electrical connection position for external circuits such as flexible circuit boards, so that the display panel can establish a communication relationship with components such as a driver chip and transmit signals.

[0040] Among them, such as Figure 1 and Figure 2 As shown, the display panel includes a base substrate 100, and a power signal line 200 and a drive signal line 300 jointly arranged on one side of the base substrate 100; the base substrate 100 can serve as the carrier of the display panel, and is used to support and protect the power signal line 200, the drive signal line 300, other film layers and components; the power signal line 200 and the drive signal line 300 are both arranged on one side of the base substrate 100. As for the power signal line 200, the power signal line 200 can provide the necessary operating voltage for the TFT in the display panel, which is conducive to accurately controlling the opening and closing of the pixels in the display panel to achieve the purpose of controlling the pixel luminous intensity; it is also used to assist in maintaining the stability and signal integrity of the driving circuit in the display panel, adjust the current delivered to the pixels in the display panel, ensure image quality and uniformity, and ensure that the display panel can accurately display the image to maintain the electrical balance of the entire display panel.

[0041] As for the driving signal line 300, the driving signal line 300 is located in the second border area 20 of the non-display area NA. The driving signal line 300 can be set in the same layer as the power signal line 200, or in a different film layer; wherein, the driving signal line 300 can be electrically connected to multiple TFTs through the gate driving circuit, reducing the number of peripheral circuits arranged in the display panel, reducing the hardware requirements of the display panel, and is conducive to optimizing the refresh rate of TFT-controlled pixels, improving the display uniformity and response speed; it can also simplify the manufacturing process of the driving signal line 300 in the display panel, reduce production costs, and improve production efficiency.

[0042] The display panel provided in this application further includes a metal shielding layer 400; specifically, Figure 1 and Figure 2As shown, the metal shielding layer 400 is arranged in the base substrate 100, which can isolate other signal lines in the display panel from the metal shielding layer 400 to prevent short circuits inside the display panel; as for the metal shielding layer 400, the orthographic projection of the metal shielding layer 400 on the base substrate 100 covers the orthographic projection of the drive signal line 300 on the base substrate 100, and the metal shielding layer 400 is located in the second frame area 20 and is continuously arranged around at least part of the display area AA; for example, when the display panel is tested, the metal shielding layer 400 shields and covers the drive signal line 300, which can block the light during the test so that the light cannot be irradiated on the drive signal line 300. The surface is protected from light that affects the performance of the driving signal line 300, thereby ensuring the display effect of the display panel. At the same time, the metal blocking layer 400 can form a reinforcement structure in the second frame area 20 of the non-display area NA, which can increase the strength of the periphery of the display panel. At the same time, due to the good toughness of the metal blocking layer 400, the resistance of the periphery of the display panel to stresses such as shear force can be improved. If cracks appear around the display panel, the metal blocking layer 400 in the base substrate 100 can block the cracks and prevent them from extending further toward the display area AA, thereby reducing the risk of damage to the display panel and ensuring the integrity and display function of the display panel.

[0043] As for the metal blocking layer 400, the metal blocking layer 400 is electrically connected to the power signal line 200 in at least a portion of the first frame area 10 of the display panel; when the display panel is powered on, the metal blocking layer 400 is turned on through the power signal line 200 to make the metal blocking layer 400 charged. Since at least a portion of the metal blocking layer 400 is located in the second frame area 20 and is arranged around the display area AA, a shielding electric field can be formed around the display area AA. Under the action of the shielding electric field, the mobile charges distributed in and near the base substrate 100 can be shielded to prevent the charges from undergoing energy transitions, which is beneficial to reducing the degree of interference of the charges on the TFT and improving the stability of the TFT, thereby ensuring the display effect of the display panel.

[0044] Since the metal blocking layer 400 is arranged in the base substrate 100 of the display panel, during the preparation of the display panel, the metal blocking layer 400 can be formed in the BP (Back Plate) preparation process; in the BSM Mask (Barrier Seal Mask) formation process, the process of removing the edge mask of the display panel can be omitted, and the metal layer in the edge area of ​​the base substrate is retained in the base substrate to serve as the metal blocking layer 400 of the display panel; therefore, when preparing the metal blocking layer 400, there is no need to add an additional preparation process for the metal blocking layer 400, and there is no need to make complex adjustments to the BP preparation process to obtain the display panel provided in this application, thereby effectively controlling the production cost of the display panel.

[0045] It should be noted that the metal blocking layer 400 can be formed of molybdenum or its alloy materials; for example, since molybdenum has good physical properties and stable chemical properties, it can improve the heat resistance and tear resistance of the edge of the display panel while not affecting the properties of other film layers, thereby improving the overall quality of the display panel.

[0046] In addition, since the metal blocking layer 400 is formed of molybdenum or its alloy material, it has good thermal conductivity and heat dissipation properties. When the metal blocking layer 400 is arranged in the non-display area NA and continuously arranged around the display area AA, it can form an annular heat dissipation belt around the display panel. When the temperature of the display panel rises, the metal blocking layer 400 can dissipate the heat inside the display panel to the external environment, thereby improving the heat dissipation efficiency of the display panel, avoiding heat accumulation in the display panel, and improving the working environment of the display panel.

[0047] In some embodiments, a metal backplate 730 is further provided on the backlight side of the display panel, so that the display panel and the metal backplate 730 constitute a display module; in the display module, the metal backplate 730 is provided on the side of the base substrate 100 away from the power signal line 200; the orthographic projection of the metal backplate 730 on the base substrate 100 is located within the base substrate 100, so that the metal shielding layer 400 surrounds the metal backplate 730.

[0048] like Figure 1-Figure 3 As shown, with respect to the metal backplate 730, the metal backplate 730 can be closely arranged with respect to the base substrate 100, so that the display panel and the metal backplate 730 have sufficient contact area, so that the heat of the display panel can be dissipated through the metal backplate 730; specifically, a large amount of heat is generated after the display panel is turned on, and at this time, the heat of the display panel can be transferred to the metal backplate 730. Since the metal backplate 730 has good thermal conductivity and heat dissipation performance, the heat can be dissipated through the metal backplate 730, thereby improving the heat dissipation capacity of the display panel; illustratively, the metal backplate 730 can be formed of materials such as copper, silver, aluminum and their alloys; in addition, the orthographic projection of the metal backplate 730 on the base substrate 100 is located within the base substrate 100, that is, the area of ​​the metal backplate 730 is smaller than that of the base substrate 100, and the metal backplate 730 can be bonded to the base substrate 100 using a shrinking process, thereby reducing the difficulty of attaching the metal backplate 730 and improving the adaptability between the display panel assembly and the display device.

[0049] In addition, the metal back plate 730 can not only improve the heat dissipation efficiency of the display panel, but also shield the TFT in the display panel during the test process to prevent the semiconductor components in the TFT from being exposed to light and thus damaging their performance during the test process. Since the metal back plate 730 is formed by the shrinking process, it cannot effectively shield the driving signal lines 300 in the non-display area NA. Moreover, when the metal back plate 730 is attached to the backlight side of the display panel, it is difficult to ensure the accuracy of its attachment position, and it is difficult to fully cover the effective semiconductor components in the display panel. Specifically, Figure 3 As shown, when performing an aging test, an exposure test, a material test or an optical performance test on the display panel, a test light such as UV (Ultraviolet Rays) light can be used to irradiate the display panel. Since part of the structure in the TFT in the display panel and the driving signal line 300 set in the second frame area 20 are at least partially formed by semiconductor materials, if the UV light is irradiated on the TFT or the driving signal line, it will affect the display effect and overall performance of the display panel.

[0050] Similarly, the driving signal line 300 is distributed in the non-display area NA and is electrically connected to the gate driving line. The driving signal line 300 is also formed of a semiconductor material. Taking the driving signal line 300 as an example, if the GOA is exposed to UV light, its overall performance will be affected, thereby affecting the display effect of the display panel. Figure 4 As shown, if the backlight side of the display panel has a metal backplate 730 and a metal shielding layer 400 is provided in the base substrate 100, the metal backplate 730 can shield the TFT in the display panel, and the metal shielding layer 400 can shield the GOA in the non-display area NA. During the test, since UV light does not irradiate the TFT and GOA, the negative bias of the Vth (threshold voltage) of the GOA formed by the semiconductor material is small. Specifically, Figure 4 As shown in the sequence numbers 1-5 in the figure, it will not affect the GOA output effect; if the backlight side of the display panel has a metal backplane 730 and the base substrate 100 is not provided with a metal shielding layer 400, during the test, since the UV light will not irradiate the TFT, but can irradiate the GOA in the non-display area NA, the Vth of the GOA formed by the semiconductor material will produce a large negative bias, as shown in FIG. Figure 4 As shown in the sequence numbers 6-10, it means that there is an abnormality in the GOA output, which causes abnormal problems such as uneven brightness or greening of the display panel; therefore, by setting a metal blocking layer 400 in the base substrate 100, it is beneficial to improve the overall performance of the display panel.

[0051] In addition, since the metal blocking layer 400 is arranged in the base substrate 100, the orthographic projection of the metal back plate 730 on the base substrate 100 is located in the base substrate 100, so that the orthographic projection of the metal blocking layer 400 on the side of the base substrate 100 surrounds the metal back plate 730; at this time, the metal blocking layer 400 can also block the TFTs set in the non-display area NA, reducing the problem of performance degradation of semiconductor components caused by inaccurate attachment position of the metal back plate 730; since some TFTs in this area are still in the on state, the influence of the UV light of the display panel on the performance of this part of the TFT can be reduced, so as to ensure the display effect of the display panel.

[0052] In some embodiments, the display panel also includes a blocking structure 500, which is arranged on the base substrate 100 and at least partially surrounds the display area AA; the blocking structure 500 is located on the side of the power signal line 200 away from the display area AA, and the blocking structure 500 is electrically connected to the metal blocking layer 400 in the second frame area 20.

[0053] like Figure 2 and Figure 5 As shown, with respect to the display panel, the blocking structure 500 is arranged on one side of the base substrate 100 and is at least partially arranged around the display area AA, and a blocking wall structure can be formed in the non-display area NA of the display panel, which is beneficial to enhancing the strength of the periphery of the display panel, thereby further improving the toughness and resistance to cracks of the periphery of the display panel, and also avoiding blocking the display area AA to ensure the display effect of the display panel; at the same time, the metal blocking layer 400 is arranged inside the base substrate 100, and the blocking structure 500 can be electrically connected to the metal blocking layer 400 in the second frame area 20; therefore, when the charge in the base substrate 100 flows into the blocking structure 500 through the metal blocking layer 400, the blocking structure 500 located in the second frame area 20 can serve as an electrostatic discharge path to extract and release the charge. For example, an electrostatic release circuit can be set inside the display panel, or connected to an external electrostatic release circuit to avoid the problem of electrostatic accumulation in the display panel.

[0054] In some embodiments, the blocking structure 500 includes a first blocking substructure 510, which is arranged on one side of the base substrate 100; at least a portion of the first blocking substructure 510 is located in the second border area 20 and surrounds the display area AA; the base substrate 100 has a first opening (not marked in the figure) in the second border area 20, and the first blocking substructure 510 is electrically connected to the metal blocking layer 400 through the first opening.

[0055] like Figure 2 and Figure 5As shown, with regard to the blocking structure 500, the blocking structure 500 may include a first blocking substructure 510, and at least a portion of the first blocking substructure 510 is located in the second border area 20 and is continuously arranged around the display area AA. At this time, the first blocking substructure 510 can be used to form a metal blocking wall in the non-display area NA, which can enhance the ability of the non-display area NA to resist cracks and ensure the overall quality of the display panel.

[0056] In addition, since the first blocking substructure 510 and the power signal line 200 are arranged on the same side, and at least a part of the first blocking substructure 510 is located in the second frame area 20 and is continuously arranged around the display area AA; the base substrate 100 has a first opening in the first frame area 10, and the first blocking substructure 510 is electrically connected to the metal shielding layer 400 through the first opening; specifically, since the first blocking substructure 510 in the blocking structure 500 is electrically connected to the metal shielding layer 400 in the second frame area 20, when the display panel is powered on, the power signal line 200 is connected to the metal shielding layer 400 in the first frame area 10, so that the metal shielding layer 400 is charged and A shielding electric field is formed in the base substrate 100 to electromagnetically shield the charges in the base substrate 100, stabilize the charges in the display panel, prevent energy transition of the charges, and reduce the interference of the charges on the TFTs in the display panel; since the first blocking substructure 510 passes through the first opening and the metal blocking layer 400 in the second frame area, the metal blocking layer 400 can transfer the charges to the first blocking substructure 510 through the first opening in the second frame area 20, and enable the part of the first blocking substructure 510 located in the second frame area 20 to receive the charges flowing out of the metal blocking layer 400, so that the charges can be extracted and released through the first blocking substructure 510.

[0057] The first barrier substructure 510 is further described in conjunction with the above embodiment. Since the metal barrier layer 400 is disposed within the base substrate 100, the metal barrier layer 400 and the first barrier substructure 510 are respectively located at different film layers. Therefore, a first opening can be provided in the base substrate 100 between the metal barrier layer 400 and the first barrier substructure 510, and a first connecting portion (not labeled in the figure) can be formed within the first opening through a deposition process. That is, the first connecting portion is formed on a side of the first barrier substructure 510 close to the metal barrier layer 400, thereby connecting the first barrier substructure 510 and the metal barrier layer 400. In addition, since the first barrier substructure 510 is connected to the power signal line 200, in order to reduce the manufacturing cost of the display panel, the first barrier substructure 510 can be simultaneously formed in the non-display area NA when the source electrode or drain electrode of the display panel is prepared, so that the first barrier structure 510 is electrically connected to the metal barrier layer 400 through the first opening. This eliminates the need for an additional manufacturing process for the first barrier substructure 510, thereby helping to control the manufacturing cost of the display panel.

[0058] In some embodiments, the blocking structure 500 also includes a second blocking substructure 520, which is arranged on a side of the first blocking substructure 510 away from the base substrate 100; at least a portion of the second blocking substructure 520 is located in the second border area 20 and surrounds the display area AA; a flat layer 820 is arranged between the second blocking substructure 520 and the first blocking substructure 510, and the flat layer 820 has a second opening (not marked in the figure) in the second border area 20, and the second blocking substructure 520 is electrically connected to the first blocking substructure 510 through the second opening.

[0059] like Figure 2 and Figure 8 As shown, the blocking structure 500 includes not only the first blocking substructure 510 but also the second blocking substructure 520, and the second blocking substructure 520 is arranged on the side of the first blocking substructure 510 away from the base substrate 100, and at least a portion of the second blocking substructure 520 is located in the second border area 20 and is continuously arranged around the display area AA. At this time, by utilizing the second blocking substructure 520, another metal blocking wall can be formed in the non-display area NA, which can further enhance the ability of the non-display area NA to resist cracks and improve the overall quality of the display panel.

[0060] The second blocking substructure 520 is arranged on a side of the first blocking substructure 510 away from the base substrate 100, and at least a portion of the second blocking substructure 520 is located in the second frame area 20 and is continuously arranged around the display area AA. Due to the influence of material defects in the base substrate 100, when the display panel is powered on, charges are easily accumulated in the base substrate 100, and the accumulated charges are easily subject to energy transition. Since the second blocking substructure 520 and the first blocking substructure 510 are electrically connected through the second opening in the second frame area 20, when a large amount of charges are accumulated around the display panel, under the action of the shielding electric field, the charges in the base substrate 100 can flow into the second blocking structure 520 located in the second frame area 20 through the metal shielding layer 400 and the first blocking substructure 510, and the charges inside the display panel are guided into the grounding structure 600 by the second blocking substructure 520, so that the charges are guided out of the display panel through the grounding structure 600, which is beneficial to reducing the influence of the charges on the TFTs in the display panel, avoiding the problem of uneven brightness on the display panel, and ensuring that the display panel has a good display effect.

[0061] The second barrier substructure 520 is further described in conjunction with the above embodiment. Since the first barrier substructure 510 and the second barrier substructure 520 are respectively arranged in different film layers of the display panel, at least one flat layer 820 can be provided between the first barrier substructure 510 and the second barrier substructure 520 so that the first barrier substructure 510 and the second barrier substructure 520 are arranged in layers. At this time, by etching a second opening in the flat layer 820 and forming a second connecting portion (not marked in the figure) in the second opening using a deposition process, the first barrier substructure 510 and the second barrier substructure 520 can be electrically connected through the second connecting portion. In addition, in order to achieve electrical connection between the second barrier substructure 520 and the first barrier substructure 510 and reduce the manufacturing cost of the display panel, when preparing the touch layer structure of the display panel, the second barrier substructure 520 is simultaneously formed in the non-display area NA, without adding a preparation process for the second barrier substructure 520, which is beneficial to controlling the manufacturing cost of the display panel.

[0062] In some embodiments, the display panel also includes a grounding structure 600, which is disposed on the base substrate 100; at least a portion of the grounding structure 600 is located in the second border area 20 and surrounds the display area AA; the grounding structure 600 is electrically connected to the blocking structure 500 in the first border area 10, and the distance between the grounding structure 600 and the display area AA is less than the distance between the blocking structure 500 and the display area AA.

[0063] like Figure 11 As shown, a grounding structure 600 is provided in the display panel. At least a portion of the grounding structure 600 is located in the second frame region 20 and is disposed around the display area AA. The distance between the grounding structure 600 and the display area AA is less than the distance between the blocking structure 500 and the display area AA. The grounding structure 600 can be electrically connected to the blocking structure 500 in the first frame region 10 to conduct mobile charges received by the blocking structure 500 out of the display panel, thereby reducing interference with the TFTs in the display area AA during the charge conduction process of the grounding structure 600.

[0064] Exemplarily, the grounding structure 600 can adopt a GND (grounding trace) set around the display area AA. When a large amount of charge is accumulated around the display panel, the charge in the base substrate 100 is introduced into the first blocking substructure 510 in the second frame area 20 by the metal blocking layer 400, and then introduced into the second blocking substructure 520 in the second frame area 20 by the first blocking substructure 510, so that the transmitted charge is introduced into the grounding structure 600 in the first frame area 10 through the second blocking substructure 520, and the charge in the display panel can be exported through the grounding structure 600; wherein, the grounding structure 600 can introduce the exported charge into the metal backplate 730 set on its backlight side through the electrostatic discharge circuit, or it can be an external circuit connected to the grounding structure 600 in the first frame area 10, which is conducive to the rapid export of charge, and will not be repeated here.

[0065] In some embodiments, the first border area 10 is provided with a bonding area 11, and a pad is provided in the bonding area 11; Figure 11 As shown, the pads provided in the bonding area 11 of the first frame area 10 can provide wiring positions, so that the display panel can establish an electrical connection with the external circuit and realize signal transmission; as for the display panel, the display panel also includes a flexible circuit board (not marked in the figure), and the flexible circuit board is provided with solder contacts (not marked in the figure). The flexible circuit board can serve as part of the external circuit, and the flexible circuit board is electrically connected to the pads in the bonding area 11 through the solder contacts; specifically, the flexible circuit board can be provided with a printed circuit and solder contacts, and the flexible circuit board can be connected to the solder pads in the bonding area 11 through the solder contacts and the printed circuit; in the second frame area 20 of the display panel, in addition to the blocking structure 500, at least part of the signal lines in the display panel, such as the power signal line 200 and the drive signal line 300, are also electrically connected to the bonding area 11. By establishing an electrical connection with the external components through the flexible circuit board, signals and instructions can be transmitted to ensure that the display panel can have the corresponding display function.

[0066] In some embodiments, the display panel further includes a first metal layer 810, a planarization layer 820, a second metal layer 830, an insulating layer 840, and a touch metal layer 850 stacked in sequence; the first metal layer 810 is disposed on one side of the base substrate 100 and is covered by the planarization layer 820, and the first metal layer 810 is disposed on the same layer as the power signal line 200; the orthographic projection of the planarization layer 820 on the base substrate 100 covers the orthographic projections of the power signal line 200 and the drive signal line 300 on the base substrate 100 respectively; the planarization layer 820 is provided with a third opening (not marked in the figure), the second metal layer 830 is connected to the power signal line 200 through the third opening, and the second metal layer 830 is disposed on the same layer as the first blocking substructure 510; the touch metal layer 850 is disposed on a side of the insulating layer 840 away from the base substrate 100 and is disposed on the same layer as the second blocking substructure 520; the touch metal layer 850 is electrically connected to the first metal layer 810, and the touch metal layer 850 surrounds the display area AA in at least a portion of the second frame area 20.

[0067] like Figure 1 and Figure 2 As shown, as for the display panel, the display panel also includes a first metal layer 810, a flat layer 820, a second metal layer 830 and an insulating layer 840 stacked in sequence; wherein the first metal layer 810 is arranged on one side of the base substrate 100 and is covered by the flat layer 820, and can be used as a source electrode in the TFT to control the opening and closing of the pixels in the display panel; and the first metal layer 810 and the power signal line 200 are arranged on the same layer, which optimizes the utilization rate of the internal space of the display panel and is conducive to the lightweight design of the display panel; the orthographic projection of the flat layer 820 on the base substrate 100 covers the orthographic projection of the power signal line 200 and the drive signal line 300 on the base substrate 100 respectively, and can cover the power signal line 200 and the drive signal line 300 to implement electrical insulation and surface flattening treatment for both; the flat layer 820 A third opening (not marked in the figure) is provided, and the second metal layer 830 is connected to the power signal line 200 through the third opening, and the second metal layer 830 is provided on the same layer as the first blocking substructure 510. The second metal layer 830 and the first blocking substructure 510 can be prepared simultaneously during the preparation process of the display panel, which is beneficial to simplify the preparation process of the display panel and reduce the preparation cost of the display panel. In addition, the second metal layer 830 can also serve as the drain electrode in the TFT to cooperate with the source electrode to drive the pixel to light up and extinguish; the insulating layer 840 can be located between the second metal layer 830 and the touch metal layer 850, which can play a good electrical insulation effect. Otherwise, a short circuit occurs between the two and affects the display effect of the display panel; in addition, the display panel can also include at least one of the film layers such as a dielectric layer, a passivation layer and a buffer layer, which will not be repeated here.

[0068] In addition, the touch metal layer 850 is arranged on the side of the insulating layer 840 away from the base substrate 100 and is arranged in the same layer as the second blocking substructure 520, and the touch metal layer surrounds the display area AA in at least part of the second frame area 20; specifically, since the touch metal layer 850 surrounds the display area AA in at least part of the second frame area 20, the touch metal layer 850 arranged in the second frame area 20 may not have a touch function, and the touch metal layer 850 may form an auxiliary retaining wall structure in the non-display area NA, which can further enhance the strength and toughness of the periphery of the display panel, so that the display panel has stronger crack resistance and stress resistance; in addition, the touch metal layer 850 can be set to at least two or more, which is conducive to improving the ability of the formed auxiliary retaining wall structure to resist cracks.

[0069] The touch metal layer 850 is further described in conjunction with the above embodiments. When preparing the touch metal layer 850 of the display panel, at least one touch metal layer 850 can be simultaneously formed in the non-display area NA, and the touch metal layer 850 can be distributed on the side of the insulating layer 840 away from the base substrate 100. Since the touch metal layer 850 is located in the non-display area NA, it will not interfere with the touch function of the display area AA, and is beneficial to controlling the preparation cost of the display panel. In addition, to improve the reliability of the touch metal layer 850, the touch metal layer 850 can be connected to one of the source electrode or the drain electrode in the non-display area NA through a via, thereby enhancing the firmness of the touch metal layer 850 and improving the crack blocking effect of the area where the touch metal layer 850 is located.

[0070] In some embodiments, the power signal line 200 includes a first power supply unit 211 and multiple first sub-power lines 212; the first power supply unit 211 is arranged on one side of the base substrate 100 and is located in the first border area 10; multiple first sub-power lines 212 are arranged on one side of the base substrate 100 and are located in the display area AA, and the multiple first sub-power lines 212 are electrically connected to the first power supply unit 211; the first power supply unit 211 is electrically connected to the metal blocking layer 400 in the first border area 10.

[0071] like Figure 6 、 Figure 7 and Figure 9As shown, the power signal line 200 of the display panel is electrically connected to the metal blocking layer 400 in the first frame area 10, and can be conductive with the metal blocking layer 400 and charge it, so that the metal blocking layer 400 forms a shielding electric field. The shielding electric field can shield the charge in the display panel, reduce the interference of the charge on the TFT in the display area AA, and is conducive to maintaining the stability of the TFT and ensuring the display effect of the display panel; as for the power signal line 200, the power signal line 200 may include a first power supply unit 211 and a plurality of first sub-power lines 212, the first power supply unit 211 is arranged on one side of the base substrate 100 and is located in the first frame area 10, the plurality of first sub-power lines 212 are located in the display area AA, and the ends of the plurality of first power signals pass through a common first power supply unit 211 Electrical connection, the first power supply unit 211 is located in the first border area 10 of the non-display area NA, and can be connected to the metal blocking layer 400 in the first border area 10; more specifically, when the display panel is powered on, the power signal line 200 of the display panel transmits the electrical signal through the current, and the multiple first sub-power lines 212 are electrically connected to the metal blocking layer 400 through the first power supply unit 211 in the first border area 10. Therefore, the first sub-power lines 212 can be used to introduce current into the metal blocking layer 400 to charge the metal blocking layer 400 and form a corresponding shielding electric field in the base substrate 100. Under the action of the electric field force of the shielding electric field, the energy distribution of the electron energy level can be changed, and the probability of charge transition is reduced, which is beneficial to maintaining the stability of the TFT in the display panel and ensuring the display effect of the display panel.

[0072] The first sub-power line 212 is further described in conjunction with the above embodiment. Since the first sub-power line 212 is arranged in the display area AA, the first sub-power line 212 can utilize the VDD (Voltage Drain Driver, high level of the driving circuit) routing of the display panel. The VDD routing can provide an operating voltage, i.e., a positive power supply voltage, for the TFT and other components of the display panel. Therefore, for the display panel, the VDD routing can control the on or off of the pixel to achieve control of the pixel working state. When the metal blocking layer 400 is electrically connected to the first sub-power line 212 through the first power supply unit 211, the metal blocking layer 400 can be turned on and charged, thereby forming a shielding electric field in the base substrate 100. In addition, by utilizing the VDD routing in the related art, the first sub-power line 212 does not require the addition of other power signal lines 200, nor does it require additional preparation steps, which is beneficial to reducing the production cost of the display panel.

[0073] In some embodiments, the power signal line 200 includes a second sub-power line 220, which is arranged on one side of the base substrate 100; the second sub-power line 220 is located in the second border area 20 and surrounds the display area AA, and the second sub-power line 220 is electrically connected to the metal shielding layer 400 in the first border area 10.

[0074] like Figure 6 、 Figure 7 and Figure 10 As shown, with regard to the power signal line 200, the power signal line 200 may include a second sub-power line 220, the second sub-power line 220 is arranged on one side of the base substrate 100, and the part of the second sub-power line 220 located in the second border area 20 is continuously arranged around the display area AA; more specifically, when the display panel is turned on, the display panel transmits the electrical signal in the power signal line 200 through the current, and the part of the second sub-power line 220 in the first border area 10, that is, the end of the second sub-power line 220, is electrically connected to the metal blocking layer 400, so that the second sub-power line 220 and the metal blocking layer 400 can be mutually conductive and the metal blocking layer 400 can be charged, thereby forming a shielding electric field in the base substrate 100, which is beneficial to maintaining the stability of the display panel TFT and ensuring that the display panel has a good display effect.

[0075] The second sub-power line 220 is further explained in combination with the above embodiment; since the second sub-power line 220 is arranged in the non-display area NA, the second sub-power line 220 can utilize the VSS (Voltage Supply Slave, low level of the driving circuit) routing in the display panel; wherein the VSS routing can provide a low-level reference voltage, that is, a negative power supply voltage, for the TFT and other components, so that the TFT and other components in the display panel can operate stably; more specifically, when the metal blocking layer 400 is electrically connected to the second sub-power line 220, the metal blocking layer 400 can be turned on and charged and form a shielding electric field in the base substrate 100, thereby confining the charge in the display panel; it should be noted that the second sub-power line 220 utilizes the VSS routing in the related technology, without the need to add other power signal lines 200, nor the need for additional preparation processes, which is beneficial to reducing the production cost of the display panel.

[0076] It should be noted that if Figure 5As shown, since one of the first sub-power line 212 and the second sub-power line 220 is connected to the metal shielding layer 400, at this time, the base substrate 100 can be provided with a transfer hole (not marked in the figure). As for the first sub-power line 212 or the second sub-power line 220, a transfer portion (not marked in the figure) is protruded on the side close to the metal shielding layer 400, and the transfer portion is located in the transfer hole, so that the first sub-power line 212 or the second sub-power line 220 is electrically connected to the metal shielding layer 400 through the transfer portion, shortening the connection path between the metal shielding layer 400 and the first power signal, so that the metal shielding layer 400 forms a corresponding shielding electric field in the base substrate 100.

[0077] In some embodiments, the display panel further includes a plurality of blocking portions 710, which are disposed on the base substrate 100 and located in the second border area 20; the blocking portions 710 are recessed toward the direction close to the metal blocking layer 400, and the blocking structure 500 is located between two adjacent blocking portions 710; a flat layer is disposed on one side of the base substrate 100, and the orthographic projection of the flat layer on the base substrate 100 covers the orthographic projection of the blocking portion 710 on the base substrate 100.

[0078] like Figure 1 and Figure 2 As shown, with respect to the display panel, the display panel further includes a blocking portion 710 and a flat layer 820; wherein the blocking portion 710 is arranged on the base substrate 100 and is located in the non-display area NA, and is continuously arranged in the second frame area 20 in the non-display area NA, and the blocking portion 710 is recessed in the direction close to the metal blocking layer 400. By arranging the blocking portion 710 in the second frame area 20 of the non-display area NA, the influence of the uneven area formed by the blocking portion 710 on the light emitting effect can be prevented, and the recessed setting of the blocking portion 710 in the base substrate 100 can increase the contact area and bonding degree between the base substrate 100 and the flat layer 820, which is conducive to improving the display quality. The high packaging effect on the periphery of the display panel and the barrier ability of the display panel to moisture and water vapor can avoid the problem of film separation when the display panel is bent; in addition, the flat layer 820 is arranged on the base substrate 100; the flat layer 820 covers the power signal line 200 and the blocking portion 710 respectively. As far as the display panel is concerned, the flat layer 820 is arranged on the base substrate 100, which can cover the power signal line 200, the blocking portion 710 and the TFT arranged on the base substrate 100, thereby realizing the packaging and protection of the display panel, and the surface of the base substrate 100 can be flattened to provide a preparation area with good flatness for the preparation of other film layers.

[0079] like Figure 1 and Figure 2As shown, with respect to the blocking portion 710, the blocking portion 710 is arranged in the non-display area NA, which can enhance the contact area between the base substrate 100 and the flat layer 820, thereby increasing the bonding effect between the two, which is beneficial to improving the packaging effect around the display panel; wherein, one blocking portion 710 can be provided, or more than two blocking portions 710 can be provided. When more than two blocking portions 710 are provided, the bonding effect between the base substrate 100 and the flat layer 820 can be further enhanced; and along the non-display area NA, the blocking portions 710 can be provided continuously in the non-display area NA, or can be provided at intervals, and the extension directions of different blocking portions 710 can be parallel to each other, so as to reduce the difficulty of preparing the blocking portions 710 and improve the bonding effect between the film layers.

[0080] In addition, since the blocking structure 500 is located between two adjacent blocking portions 710, the encapsulation effect of the planar layer 820 on the blocking structure 500 can be improved under the action of the plurality of blocking portions 710; Figure 2 As shown, due to the small size of the blocking structure, the blocking structure 500 can also increase the unevenness of the display panel in the non-display area NA, thereby further increasing the bonding degree between the flat layer 820 and the base substrate 100, which is beneficial to improving the packaging effect of the non-display area NA.

[0081] Based on the same inventive concept, the present application also provides a display device, which includes the display panel as described above; since the display device uses the display panel described above, it has all the advantages and beneficial effects of the display panel; illustratively, the display device can be a mobile phone with display function, a computer, a self-service inquiry service desk, a movie screen, and a car display, etc., which have interactive function display devices and will not be repeated here.

[0082] It should be noted that the method of the embodiment of the present application can be performed by a single device, such as a computer or server. The method of this embodiment can also be applied in a distributed scenario and performed by multiple devices working together. In such a distributed scenario, one of the multiple devices may only perform one or more steps of the method of the embodiment of the present application, and the multiple devices will interact with each other to complete the method.

[0083] It should be noted that the above description is limited to some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in an order different from that described in the above embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the specific order or sequential order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0084] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. Within the scope of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0085] In addition, to simplify the description and discussion, and in order not to obscure the embodiments of the present application, known power / ground connections to the various components may or may not be shown in the provided figures. In addition, the devices may be shown in the form of block diagrams to avoid obscuring the embodiments of the present application, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform on which the embodiments of the present application will be implemented (i.e., these details should be fully within the scope of understanding of those skilled in the art). Where specific details are set forth to describe exemplary embodiments of the present application, it will be apparent to those skilled in the art that the embodiments of the present application may be implemented without these specific details or with variations in these specific details. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0086] While the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0087] The embodiments of the present application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of this application.

Claims

1. A display panel, characterized in that: The device comprises a display area and a non-display area, wherein the non-display area includes a first frame area located on one side of the display area and a second frame area at least partially surrounding the display area, wherein the first frame area and the second frame area are connected to surround the display area; The display panel includes: substrate; A power signal line and a driving signal line, wherein the power signal line and the driving signal line are located on one side of the base substrate; the driving signal line is located in the second frame area; A metal shielding layer is arranged in the base substrate; the orthographic projection of the metal shielding layer on the base substrate covers the orthographic projection of the driving signal line on the base substrate; the metal shielding layer is located in at least a portion of the second frame area surrounding the display area, and at least a portion of the metal shielding layer located in the first frame area is electrically connected to the power signal line.

2. The display panel according to claim 1, wherein: Also includes: a blocking structure, disposed on the base substrate and at least partially surrounding the display area; The blocking structure is located on a side of the power signal line away from the display area, and the blocking structure is electrically connected to the metal shielding layer in the second frame area.

3. The display panel according to claim 2, wherein: The blocking structure comprises: A first blocking substructure is arranged on one side of the base substrate; at least a portion of the first blocking substructure is located in the second frame area and surrounds the display area; the base substrate has a first opening in the second frame area, and the first blocking substructure is electrically connected to the metal shielding layer through the first opening.

4. The display panel according to claim 3, wherein: The blocking structure further includes: A second blocking substructure is arranged on a side of the first blocking substructure away from the base substrate; at least a portion of the second blocking substructure is located in the second border area and surrounds the display area; a flat layer is arranged between the second blocking substructure and the first blocking substructure, the flat layer has a second opening in the second border area, and the second blocking substructure is electrically connected to the first blocking substructure through the second opening.

5. The display panel according to claim 4, wherein: Also includes: A grounding structure, provided on the base substrate; At least a portion of the grounding structure is located in the second frame area and surrounds the display area; The grounding structure is electrically connected to the blocking structure in the first frame area, and a distance between the grounding structure and the display area is smaller than a distance between the blocking structure and the display area.

6. The display panel according to claim 4, wherein: It also includes a first metal layer, the flat layer, a second metal layer, an insulating layer and a touch metal layer stacked in sequence; The first metal layer is provided on one side of the base substrate and is covered by the planar layer, and the first metal layer and the power signal line are provided on the same layer; The orthographic projection of the planar layer on the base substrate respectively covers the orthographic projection of the power signal line and the orthographic projection of the driving signal line on the base substrate; The planar layer is provided with a third opening, the second metal layer is electrically connected to the power signal line through the third opening, and the second metal layer and the first blocking substructure are provided on the same layer; The touch metal layer is disposed on a side of the insulating layer away from the base substrate and is disposed in the same layer as the second blocking substructure. At least a portion of the touch metal layer surrounds the display area in the second frame region.

7. The display panel according to claim 1, wherein: The power signal line includes: A first power supply unit is provided on one side of the base substrate and is located in the first frame area; a plurality of first sub-power lines, provided on one side of the base substrate and located in the display area, wherein the plurality of first sub-power lines are electrically connected to the first power supply unit; The first power supply unit is electrically connected to the metal shielding layer in the first frame area.

8. The display panel according to claim 2, wherein: The power signal line includes: The second sub-power line is arranged on one side of the base substrate; the second sub-power line is located in the second frame area and surrounds the display area. The second sub-power line is electrically connected to the metal shielding layer in the first frame area.

9. The display panel according to claim 2, wherein: Also includes: Multiple blocking parts are arranged on the base substrate and located in the second border area; the blocking parts are recessed in the direction close to the metal blocking layer, and the blocking structure is located between two adjacent blocking parts; a flat layer is provided on one side of the base substrate, and the flat layer covers the orthographic projection of the blocking part on the base substrate.

10. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 9.

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