Display module and display device

Abstract

The application provides a display module and a display device, wherein the display module comprises a backlight module, the backlight module comprises a back plate, an upper prism and a rubber frame, the upper prism is arranged on one side of the back plate, the rubber frame is connected to the back plate and arranged around the upper prism, in the direction perpendicular to the back plate, there is a height difference between the surface of the rubber frame away from the back plate and the surface of the upper prism away from the back plate, a light shielding tape is connected to the surface of the rubber frame away from the back plate, the light shielding tape partially overlaps the upper prism in the projection of the back plate to form an overlapping area, and a compensation pad is arranged between the light shielding tape and the upper prism in the overlapping area, and the light shielding tape is connected to the upper prism through the compensation pad.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display module and a display device. Background Technology

[0002] In recent years, with the intensification of competition in the mobile consumer electronics market, the overall design of the device has gradually shown a trend towards lower cost. The proportion of plastic in the casing material has been increasing, the thickness of the middle shell has been becoming thinner and softer, and the application of stamped parts has increased, resulting in a decrease in the overall structural rigidity.

[0003] Meanwhile, the widespread adoption of full-screen designs has driven the continuous evolution of mobile phone bezels towards narrower and ultra-narrower bezels, further compressing the space available for module bezels. During module assembly, to ensure precise device bonding, a white area for light-shielding tape is typically reserved on the surface of the BLU frame, significantly increasing the reliability requirements for module structural design and manufacturing processes. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a display module and a display device.

[0005] For the purposes described above, this application provides a display module, including: A backlight module includes: a back plate, an upper prism, and a frame. The upper prism is disposed on one side of the back plate, and the frame is connected to the back plate and surrounds the upper prism. In a direction perpendicular to the back plate, there is a height difference between the surface of the frame away from the back plate and the surface of the upper prism away from the back plate. A light-shielding tape is attached to the surface of the frame away from the back panel. The orthographic projection of the light-shielding tape onto the back panel coincides with the orthographic projection of the upper prism onto the back panel to form an overlapping area. In the overlapping area, a compensation pad is provided between the light-shielding tape and the upper prism to compensate for the height difference; the light-shielding tape is connected to the upper prism through the compensation pad.

[0006] Optionally, the thickness of the compensation pad is adapted to the height of the height difference.

[0007] Optionally, the orthographic projection of the compensation pad in a direction perpendicular to the back plate surrounds the circumference of the upper prism.

[0008] Optionally, the light-shielding tape has multiple outwardly extending lug structures, and the multiple lug structures are evenly distributed around the upper prism in the orthographic projection of the upper prism; the outwardly extending portion of the lug structure at least covers the adhesive frame; Each of the aforementioned lug structures is provided with a hollow area, the orthographic projection of the hollow area on the frame at least partially coincides with the frame, and the exposed frame forms a blank area.

[0009] Optionally, the outward extension length of the lug structure is at least greater than 1 / 2 of the height of the frame in the direction perpendicular to the back plate, and the outward extension portion of the lug structure is bent along the direction perpendicular to the back plate and fixed to at least the periphery of the frame, forming a folded edge.

[0010] Optionally, the outward extension length of the lug structure is greater than the height of the frame in the direction perpendicular to the back panel, and the portion of the folded edge extending beyond the frame is bent and covered on the back panel.

[0011] Optionally, the distance between the inner and outer edges of the blank area is 0.05-0.15 mm.

[0012] Optionally, the opening of the hollow area is a hexagonal opening, which is composed of a rectangle and a trapezoid with their bottom edges joined together, and the trapezoidal part corresponds to the blank area.

[0013] Optionally, a protective housing is also included, disposed on the side of the back plate away from the upper prism; A buffer structure is provided between the back plate and the protective shell, and the orthographic projection of the buffer structure on the back plate is located at least on opposite sides of the back plate.

[0014] Optionally, there are multiple buffer structures, and the buffer structures are evenly distributed on the outer periphery of their respective back plates.

[0015] Optionally, there are two buffer structures, which are arranged opposite to each other on both sides of the back plate.

[0016] Based on the same concept, this application also provides a display device, including the display module as described above.

[0017] As can be seen from the above description, the display module and display device provided in this application include: a backlight module, the backlight module including a back plate, an upper prism, and a frame, the upper prism being disposed on one side of the back plate, and the frame being connected to the back plate and surrounding the upper prism; in a direction perpendicular to the back plate, there is a height difference between the surface of the frame away from the back plate and the surface of the upper prism away from the back plate; a light-shielding tape is connected to the surface of the frame away from the back plate, the orthographic projection of the light-shielding tape on the back plate coincides with the orthographic projection of the upper prism on the back plate, forming an overlapping area; wherein, in the overlapping area, a compensation pad is provided between the light-shielding tape and the upper prism; the light-shielding tape is connected to the upper prism through the compensation pad. This application adds a compensation pad between the light-shielding tape and the upper prism in the overlapping area to at least partially compensate for the height difference between the frame height and the stacked film height of the upper prism and other materials. This allows the light-shielding tape to maintain a relatively flat fit with both the frame and the upper prism during application, avoiding the problems of insufficient pressure support and loose adhesion on the upper prism side in related technologies. In addition, during the pressure holding process, the light-shielding tape, compensation pad, and upper prism can be pressed together as a whole, improving the bonding strength at the interface. When the entire device is subjected to a drop impact, the compensation pad can further provide additional cushioning and support, effectively inhibiting the peeling of the light-shielding tape and the upper prism under localized stress, thereby reducing the risk of edge delamination and light leakage in the display area and significantly improving the structural reliability of the module and the impact resistance of the entire device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a display module structure in related technologies; Figure 2A This is a schematic diagram of the pressure-holding function of the light-shielding tape in the relevant structure; Figure 2B This is a schematic diagram of the backlight module assembly in the finished state of the relevant structure, showing the light-shielding tape. Figure 2C This is a schematic diagram of the light-shielding tape when the module is in its finished state in the relevant structure; Figure 3 This is a schematic diagram of the display module structure according to an embodiment of this application; Figure 4A This is a top view schematic diagram of the display module according to an embodiment of this application; Figure 4B This is a partially enlarged top view of the display module according to an embodiment of this application; Figure 5A This is a top view of the light-shielding tape structure of a display module in related technologies. Figure 5B A top view of the structure of a display module after the frame is covered with light-shielding tape in the related technology; Figure 6A This is a top view of the light-shielding tape structure of the display module according to an embodiment of this application; Figure 6B This is a top view of the display module after the light-shielding tape covers the frame, according to an embodiment of this application. Figure 6C This is a schematic diagram of the display module lug structure bent to the back plate according to an embodiment of this application; Figure 7 This is a schematic diagram of the overall structure of a display module in related technologies; Figure 8 This is a schematic diagram of the overall structure of the display module according to an embodiment of this application; Figure 9A This is a schematic diagram of the display module buffer structure with opposite sides as shown in an embodiment of this application; Figure 9B This is a schematic diagram of the surrounding arrangement of the display module buffer structure according to an embodiment of this application.

[0020] Explanation of reference numerals in the attached figures: 100. Backlight module; 110. Backplate; 120. Reflective sheet; 130. Light guide plate; 140. Diffuser; 150. Lower prism; 160. Upper prism; 170. Frame; 171. Blank area; 180. Air gap; 200. Light-shielding tape; 210. Lug structure; 211. Cutout area; 300. Display panel; 310. Lower polarizer; 320. Drive circuit layer; 330. Color filter layer; 340. Upper polarizer; 350. Optical transparent adhesive layer; 360. Cover plate; 400. Buffer structure; 500. Compensation pad; 600. Pressure holding fixture; 700. Protective housing; 710. Sealing adhesive; 800. Rear shell of the whole machine; 900. Z-axis GAP. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0022] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" 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.

[0023] As described in the background section, with the increasing competition in the mobile consumer electronics market, the design of mobile devices is gradually evolving towards lower costs. In terms of casing structure, the proportion of plastic used is constantly increasing, the thickness of the mid-shell is becoming thinner and softer, and the proportion of stamped parts is increasing, resulting in a decrease in overall mechanical strength and rigidity. Consequently, drop defects caused by changes in casing structure are becoming more frequent. Drop defects include white spots, broken screens, and black spots, all closely related to insufficient cushioning and support capabilities of the casing. Meanwhile, the LCD display module, as the core display component of the entire device, has also exhibited a new type of defect under drop impact, such as localized light leakage, further increasing the difficulty of product design and verification.

[0024] Specifically, this type of light leakage problem differs from the overall detachment of the light-shielding tape 200 or the peeling of the frame 170 in the backlight module 100BLU. Instead, it is mainly concentrated at the edge of the BLU's display area. Due to the deformation of the casing under drop impact, the significant impact force is transmitted to the display module structure, causing localized tearing between the light-shielding tape 200 and the upper prism 160, resulting in localized detachment. Tiny gaps form at the detachment points, allowing light to escape from inside the BLU, manifesting as slight light leakage defects at the edges of the LCD display area. While this type of defect is not as significant as a completely shattered screen or white spots, it is still unacceptable in terms of visual experience and quality certification. Furthermore, under environmental stress, it may gradually expand, eventually evolving into a serious light leakage problem.

[0025] Figure 1 A schematic diagram of the structure of a display module in a related technology is shown.

[0026] The following analysis examines the aforementioned localized light leakage problem in conjunction with the display module structure in related technologies. (Reference) Figure 1As shown, the display module in the related technology consists of two main parts stacked sequentially: a backlight module 100 and a display panel 300, which are connected and fixed by a light-shielding tape 200. The backlight module 100 provides a stable and uniform light source, while the display panel 300 modulates the light and performs imaging. The two complement each other, ensuring the overall performance of the module in terms of optical performance and mechanical stability.

[0027] In the backlight module 100, a backplate 110 (support plate) is located at the bottom, which mainly provides mechanical support and structural stability for the entire module, and also serves as a basic layer for heat conduction and dissipation. A reflector 120 is located above the backplate 110 to reflect light scattered below or behind the light guide plate 130 back into the light guide plate 130, thereby improving light utilization and reducing energy loss. The light guide plate 130 is positioned close to the reflector 120, and through its internal optical structure, converts point or line light generated by the light source into surface light and uniformly guides it out. Above the light guide plate 130, a diffuser 140, a lower prism 150, and an upper prism 160 are arranged sequentially. The diffuser 140 mixes and homogenizes the light emitted from the light guide plate 130, avoiding bright spots or dark areas; the lower prism 150 and upper prism 160 respectively converge and correct the direction of light, enabling the light to exit perpendicularly, improving brightness and contrast, and ultimately forming a uniform light-emitting surface.

[0028] In the display panel 300, the bottom layer is the lower polarizer 310, which filters and defines the polarization direction of light, providing conditions for subsequent liquid crystal modulation. The driving circuit layer 320 (thin-film transistor layer, TFT layer) immediately above it handles the independent driving and control of the liquid crystal pixels, forming the core circuit for image display. The color filter layer (CF layer) 330, located above the TFT layer, decomposes the transmitted light into red, green, and blue primary colors, thus achieving color image presentation. Above this, the upper polarizer 340, in conjunction with the lower polarizer 310, further controls the light after the liquid crystal molecules rotate, ensuring image clarity and contrast. The optically clear adhesive layer (OCA layer) 350 serves as an adhesive and optical coupling layer, ensuring tight bonding between the layers within the display panel 300 while reducing interface reflection and optical loss. The outermost layer is the cover plate 360, typically made of glass or transparent composite material, providing mechanical protection against external impacts and scratches, and ensuring visual light transmission in the display area.

[0029] In addition, a light-shielding tape 200 is provided between the backlight module 100 and the display panel 300. This structure serves two purposes: firstly, to firmly bond the two parts together, ensuring the overall structural stability of the module; and secondly, to shield excess light from the edges, preventing light leakage and thus improving the visual consistency of the displayed image. The layers are stacked and matched sequentially according to strict optical and mechanical functional requirements, forming a complete display module system that can stably emit light and achieve high-quality image display.

[0030] It should be noted that the backplate 110, the upper prism 160, and the light-shielding tape 200 are important layers that together constitute the backlight module 100 (BLU). Specifically, the backlight module 100 also has a frame 170, which surrounds the backplate 110 in its normal projection. The upper prism 160 and other layers are located within the frame 170 surrounding the backplate 110, and the height of the frame 170 is higher than the total stacking height of the internal film materials of the backlight module 100 when stacked from the backplate 110 to the upper prism 160. This results in a height difference between the top of the frame 170 and the top of the upper prism 160. The layer structure corresponding to this height difference can be called an air gap 180. Specifically, this height difference can effectively prevent direct adsorption between the upper prism 160 and the lower polarizer 310, preventing the Newton's rings phenomenon. The light-blocking tape 200 covers the entire surface of the frame 170, with a portion of it directly attached to the surface of the frame 170 and another portion attached to the surface of the upper prism 160, thus achieving effective light blocking and fixation at the junction of the frame 170 and the upper prism 160.

[0031] Regarding the above structure, the inventors of this application have discovered that, due to the existence of the height difference, the adhesive portion of the light-shielding tape 200 to the adhesive frame 170 and the surface of the upper prism 160 is not sufficiently compacted, resulting in a relatively weak adhesive effect.

[0032] Specifically, refer to Figure 2A-2C The diagram shows the morphological changes of the light-shielding tape 200 and the upper prism 160. During the pressure-holding stage of the BLU process, the pressure-holding fixture 600 presses the frame 170 and the light-shielding tape 200 together under cylinder pressure. Since the frame 170 is higher than the internal film stacking height, the pressure is mainly borne by the frame 170, resulting in a tight bond between the light-shielding tape 200 and the surface of the frame 170. However, the portion of the light-shielding tape 200 bonded to the surface of the upper prism 160 is not sufficiently compacted, resulting in a relatively weak adhesion. After the pressure-holding process, the light-shielding tape 200, in the finished BLU state, is bent from the surface of the frame 170 towards the backplate 110 and adheres to the surface of the upper prism 160. The bending height corresponds to the aforementioned height difference.

[0033] In the finished product state after module assembly (at which point the display panel 300 and backlight module 100 (BLU) have been stacked and installed), the upper surface of the light-shielding tape 200 is entirely attached to the lower surface of the display panel 300. Since the surface of the display panel 300 is planar, the light-shielding tape 200, after being attached to it, causes the edges of the upper prism 160 to lift upwards, forming a suspended area between it and the lower prism 150. This suspended area is also the value of the height difference. This leads to two disadvantages: firstly, the light-shielding tape 200 and the upper prism 160 are not sufficiently compacted during the pressure-holding process, resulting in an inherently weak bonding interface; secondly, the edges of the upper prism 160 are lifted upwards by the light-shielding tape 200 after assembly, creating a gap below, which allows it a certain degree of deformation freedom in the direction perpendicular to the backplate 110. Furthermore, when the overall strength of the casing is insufficient, the impact of a drop will amplify the deformation space of the module as a whole, so that the internal structure of the module is prone to relative displacement at the moment of drop. During the deformation process, the weak bonding interface between the edge of the upper prism 160 and the light-shielding tape 200 will peel off first, resulting in the phenomenon of glue separation and light leakage at the edge of the display area of ​​the backlight module, namely the aforementioned local light leakage phenomenon.

[0034] To address the aforementioned localized light leakage issue, related technologies primarily employ process-level improvements. A typical measure involves strengthening the bonding process between the light-shielding tape 200 and the upper prism 160 during the production of the backlight module 100. This can be achieved by increasing the holding temperature, extending the holding time, or increasing the holding pressure to enhance adhesion strength and stability. The principle behind this is that by optimizing process parameters, the light-shielding tape 200 achieves a tighter bond between module layers, thereby enhancing its resistance to drop and tearing.

[0035] However, practice has shown that this approach has limited effectiveness. On the one hand, the improved adhesive strength resulting from process optimization is still insufficient to prevent delamination when subjected to high-energy drop impacts; on the other hand, excessive process enhancement may introduce new risks such as material deformation, indentation, or residual stress at the interface, leading to a decrease in the overall yield of the module.

[0036] Therefore, simply relying on related process strengthening methods cannot fundamentally solve the problem.

[0037] To address the aforementioned issues, the inventors of this application propose a solution. Based on the display module structure in related technologies, since the orthographic projection of the light-shielding tape 200 onto the back plate 110 coincides with the orthographic projection of the upper prism 160 onto the back plate 110, an overlapping area is formed. In the overlapping area, a compensation pad 500 is added between the light-shielding tape 200 and the upper prism 160 to reduce or even eliminate the adverse effects caused by the height difference between the frame 170 and the upper prism 160. This ensures that the light-shielding tape 200 can achieve sufficient pressure retention and compaction during the bonding process, avoiding localized loose bonding problems caused by height differences.

[0038] Specifically, in some embodiments, such as Figure 3 As shown, this application provides a display module, including: A backlight module 100 includes a back plate 110, an upper prism 160, and a frame 170. The upper prism 160 is disposed on one side of the back plate 110, and the frame 170 is connected to the back plate 110 and surrounds the upper prism 160. In a direction perpendicular to the back plate 110, there is a height difference between the surface of the frame 170 away from the back plate 110 and the surface of the upper prism 160 away from the back plate 110. A light-shielding tape 200 is attached to the surface of the frame 170 away from the back plate 110. The orthographic projection of the light-shielding tape 200 on the back plate 110 coincides with the orthographic projection of the upper prism 160 on the back plate 110, forming an overlapping area. In the overlapping area, a compensation pad 500 is provided between the light-shielding tape 200 and the upper prism 160 to compensate for the height difference; the light-shielding tape 200 is connected to the upper prism 160 through the compensation pad 500.

[0039] Specifically, the display module of this embodiment includes a backlight module 100, a light-shielding tape 200, and a compensation pad 500. The backlight module 100 is composed of a back plate 110, an upper prism 160, and a frame 170. The frame 170 is connected to the edge of the back plate 110 and extends upward around the perimeter to limit and support the upper prism 160 in the circumference. The upper prism 160 is placed on one side of the back plate 110 and is fixed around it by the frame 170, thereby preventing it from shifting in the horizontal direction.

[0040] The light-shielding tape 200 is applied to the upper surface of the frame 170 away from the back plate 110, and completely covers the surface of the frame 170. In its placement, a portion of the light-shielding tape 200 is directly adhered to the frame 170, while another portion overlaps with the upper prism 160 within the orthographic projection area of ​​the back plate 110, forming an overlapping area. Within this overlapping area, in the direction perpendicular to the back plate, because the frame 170 is higher than the upper prism 160, there is a height difference between the two. This results in a height difference between the surface of the light-shielding tape 200 near the back plate 110 and the surface of the upper prism 160 away from the back plate 110 when not pressed together; that is, there is a gap space corresponding to the height difference between them.

[0041] Due to the aforementioned height difference, after the pressing operation, the light-blocking tape 200 will cause the edges of the upper prism 160 to curl upwards, resulting in poor adhesion.

[0042] To address the issue of incomplete adhesion caused by the aforementioned height difference, this embodiment introduces a compensation pad 500 between the light-shielding tape 200 and the upper prism 160 in the overlapping area. Exemplarily, the compensation pad 500 can be pre-laminated with the light-shielding tape 200 and die-cut into a ring-shaped structure consistent with the edge of the display area, ensuring it fits tightly against the lower surface of the light-shielding tape 200. During module assembly, it at least fills part of the space (i.e., gap space) in the projected overlapping area between the frame 170 and the upper prism 160 to compensate for the height difference. This structure at least partially compensates for the height difference, allowing the light-shielding tape 200 to maintain a relatively flat and consistent fit with both the frame 170 and the upper prism 160 during application, avoiding the lack of pressure-holding support on the upper prism 160 side in the relevant structure.

[0043] In the subsequent pressure-holding process, the light-shielding tape 200, due to its relatively flat upper surface, can withstand uniform pressure under the action of the fixture, thereby ensuring effective compaction between the light-shielding tape 200 and the compensating pad 500, and between the compensating pad 500 and the upper prism 160, significantly improving the bonding strength of the interface. Furthermore, when the entire unit experiences a drop impact, the compensating pad 500 provides additional cushioning and support, effectively preventing localized peeling of the light-shielding tape 200 from the upper prism 160, reducing the risk of edge delamination and light leakage in the display area.

[0044] For example, in a specific design, the compensation pad 500 can use the same black double-sided adhesive material as the light-shielding tape 200 to maintain consistency in light-shielding performance and die-cutting process. Its thickness needs to match the height difference as closely as possible to ensure that the gap is at least partially filled, while avoiding additional warping stress on the upper prism 160. In terms of assembly process, a rigid pressure-holding fixture 600 is used to achieve full-width pressure holding, ensuring stable compaction of the multi-layer structure interface. The width of the compensation pad 500 can also be matched to the width of the light-shielding tape 200 in the bonding area of ​​the upper prism 160 to achieve full-coverage support, and the thickness and hardness can be fine-tuned according to the structural strength requirements of different products.

[0045] The following description of this embodiment is based on a comparison with structures in related technologies.

[0046] In related technologies, the light-shielding tape 200 of the LCD display module is directly applied to the surface of the frame 170, with a portion extending to the surface of the upper prism 160. Since the height of the frame 170 is greater than the stacking height of the upper prism 160, the light-shielding tape 200 and the frame 170 can be effectively compressed during the pressure-holding process. However, the portion covering the surface of the upper prism 160 is not sufficiently compressed, resulting in a weak interface with localized poor adhesion. When the overall casing is relatively soft or experiences a significant drop impact, this weak interface is prone to localized delamination, leading to slight light leakage at the edge of the display area. Related technologies primarily address this issue by strengthening the pressure-holding parameters at the process end, but this still cannot completely eliminate the risk of delamination caused by poor adhesion.

[0047] Compared to the structure in related technologies, this embodiment introduces a compensation pad 500 between the light-shielding tape 200 and the upper prism 160. In the overlapping area, the compensation pad 500 at least partially fills the gap space between the light-shielding tape 200 and the upper prism 160 to compensate for or even eliminate the height difference, ensuring that the light-shielding tape 200 adheres tightly to the adhesive frame 170 and remains flat and fitted to the upper prism 160 during application. During the pressure-holding stage, the rigid pressure-holding fixture 600 can act evenly on the surface of the light-shielding tape 200, fully compacting the interface between the compensation pad 500 and the upper prism 160, thereby eliminating the original weak interface. Through this structural design and process coordination, this solution significantly improves the adhesion between the light-shielding tape 200 and the upper prism 160, effectively suppressing the phenomenon of glue separation and light leakage under the impact of the whole machine falling, while maintaining the integrity of the edge of the BLU display area and the uniformity of the display. In addition, by adjusting the thickness of the compensation pad 500, the problem of the upper prism 160 being lifted and suspended in the air when the display module is assembled due to the height difference between the upper prism 160 and the frame 170 can be further improved or solved.

[0048] In summary, by setting the compensation pad 500, this application creates a tight composite bonding interface between the light-shielding tape 200 and the upper prism 160, which not only ensures the compaction effect during assembly but also improves the bonding reliability under harsh environments such as drop impacts. This effectively reduces the risk of adhesive failure and light leakage, and significantly improves the edge display quality of the LCD display module and the drop reliability of the entire unit.

[0049] This embodiment provides a display module, including a backlight module 100. The backlight module 100 includes a back plate 110, an upper prism 160, and a frame 170. The upper prism 160 is disposed on one side of the back plate 110, and the frame 170 is connected to the back plate 110 and surrounds the upper prism 160. In a direction perpendicular to the back plate 110, the surface of the frame 170 away from the back plate 110 and the surface of the upper prism 160 away from the back plate 110 are parallel to each other. There is a height difference between them; a light-shielding tape 200 is connected to the surface of the frame 170 away from the back plate 110, and the orthographic projection of the light-shielding tape 200 on the back plate 110 coincides with the orthographic projection of the upper prism 160 on the back plate 110 to form an overlapping area; wherein, in the overlapping area, a compensation pad 500 is provided between the light-shielding tape 200 and the upper prism 160; the light-shielding tape 200 is connected to the upper prism 160 through the compensation pad 500. In this embodiment, a compensation pad 500 is added between the light-shielding tape 200 and the upper prism 160 in the overlapping area to at least partially compensate for the height difference between the frame 170 and the film layer height of the upper prism 160, etc. This allows the light-shielding tape 200 to maintain a relatively flat adhesion with both the frame 170 and the upper prism 160 during the application process, avoiding the problems of insufficient pressure support and loose adhesion on the upper prism 160 side in related technologies. In addition, during the pressure holding stage, the light-shielding tape 200, the compensation pad 500, and the upper prism 160 can be pressed together as a whole, improving the bonding strength of the interface. When the whole machine is subjected to a drop impact, the compensation pad 500 can further play an additional buffering and supporting role, effectively inhibiting the peeling of the light-shielding tape 200 and the upper prism 160 under local stress, thereby reducing the risk of edge delamination and light leakage in the display area, and significantly improving the structural reliability of the module and the impact resistance of the whole machine.

[0050] The embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0051] In some embodiments, such as Figure 3 As shown, the thickness of the compensation pad 500 is adapted to the height of the height difference.

[0052] Specifically, the thickness of the compensation pad 500 is adapted to the height of the height difference, including but not limited to the fact that the thickness of the compensation pad 500 is the same as the height of the height difference, or the thickness of the compensation pad 500 is set to 90%-100% of the height of the height difference.

[0053] For example, taking the case where the thickness of the compensation pad 500 is the same as the height difference as the height difference, the backlight module 100 includes a back plate 110, a frame 170, and an upper prism 160. The frame 170 is arranged around the periphery of the back plate 110 and is higher than the upper prism 160, thus creating a height difference between the top surface of the frame 170 and the outer edge of the upper prism 160. A light-shielding tape 200 is applied to the side of the frame 170 away from the back plate 110, and partially overlaps with the upper prism 160 within the orthographic projection range of the back plate 110. A gap space corresponding to the height difference exists between the overlapping area and the upper prism 160. The compensation pad 500 is disposed in this gap space. Optionally, the compensation pad 500 is an annular or near-annular strip structure, located between the light-shielding tape 200 and the upper prism 160, and the thickness of the compensation pad 500 is the same as the height difference, for achieving equal thickness filling.

[0054] Specifically, the compensation pad 500 and the light-shielding tape 200 can be pre-laminated. The compensation pad 500 is attached to the lower surface of the light-shielding tape 200, and the two are die-cut into a ring-shaped outline consistent with the edge of the display area, ensuring that the inner and outer edges are concentrically arranged. During assembly, the laminated "light-shielding tape 200 / compensation pad 500" assembly is applied to the top surface of the frame 170. The compensation pad 500 extends beyond the frame 170 and is directly attached to the surface of the upper prism 160, while the portion of the light-shielding tape 200 not covered by the compensation pad 500 is directly bonded to the top surface of the frame 170 (the side of the frame 170 away from the back panel 110). The thickness of the compensation pad 500 is consistent with the height difference, thus ensuring a smooth transition of the light-shielding tape 200 between the frame 170 segment and the upper prism 160 segment.

[0055] Furthermore, after the compensation pads 500 are filled to the same thickness, the light-shielding tape 200 achieves approximately the same reference plane on the frame 170 and the upper prism 160. When the pressure-holding fixture 600 applies force, it can form uniform pressure on the entire surface of the light-shielding tape 200, which is effectively transferred to the surface of the upper prism 160 through the compensation pads 500. The frame 170 provides circumferential limiting and main support, and the outer edge of the upper prism 160 obtains surface contact support under the action of the compensation pads 500, avoiding suspension. The light-shielding tape 200, as a continuous surface adhesive layer, forms a stable composite interface between the frame 170, the compensation pads 500, and the upper prism 160. After the entire structure is installed into the display panel 300, this level structure avoids the springback or upward pulling effect caused by bending of the light-shielding tape 200 when connecting the structure.

[0056] For example, the compensation pad 500 can be made of an acrylic black double-sided adhesive substrate with micro-compression properties, achieving 0 to slight compression while ensuring that the thickness and height difference are matched, so as to improve the interface adhesion. Its edges should preferably be chamfered or rounded, and the end face should be cleanly cut to avoid burrs; the bonding area of ​​the upper prism 160 can also be surface treated (such as plasma, flame or primer treatment) to improve the adhesion performance.

[0057] This embodiment, by setting a compensation pad 500 with a thickness adapted to the height difference, ensures that the light-shielding tape 200 maintains a flat and consistent fit with both the frame 170 and the upper prism 160 during application. This results in uniform stress distribution during the pressure-holding process, and the upper prism 160 side receives sufficient compaction support, eliminating the problem of "lack of pressure-holding support and weak interface on the upper prism 160 side" in related solutions. Simultaneously, in the event of a drop impact, the compensation pad 500 provides additional support and cushioning, significantly suppressing localized peeling and warping, reducing the risk of adhesive failure and light leakage at the display area edges, and avoiding stress concentration caused by bending across steps. This effectively improves the structural stability of the module edge area and the overall reliability of the device.

[0058] In some embodiments, such as Figure 4A and Figure 4B As shown, the orthographic projection of the compensation pad 500 in a direction perpendicular to the back plate 110 surrounds the upper prism 160 circumferentially.

[0059] For example, the display module includes a backlight module 100, a light-shielding tape 200, and a compensation pad 500. The backlight module 100 consists of a back plate 110, a frame 170, and an upper prism 160. The back plate 110 serves as a supporting substrate, and the frame 170 is connected to the back plate 110 and extends upwards along its perimeter to form a stepped structure for limiting the upper prism 160. Since the height of the frame 170 is relatively higher than the internal film layers such as the upper prism 160, there is a height difference between the top surface of the frame 170 and the outer edge of the upper prism 160. The light-shielding tape 200 is laid on the top surface of the frame 170, and its orthographic projection area coincides with the orthographic projection area of ​​the upper prism 160 within the orthographic projection area of ​​the back plate 110. Within this overlapping area, there is a gap space between the frame 170 and the upper prism 160 corresponding to the height difference. To reduce or even eliminate the height difference, a compensation pad 500 is provided in the gap space, located between the light-shielding tape 200 and the upper prism 160, to achieve at least partial filling. In this embodiment, the compensation pad 500 surrounds the upper prism 160 circumferentially in the orthographic projection perpendicular to the back plate 110, and optionally forms a closed or near-closed annular distribution in the planar projection.

[0060] Specifically, the compensation pad 500 can be pre-attached to the lower surface of the light-shielding tape 200. After the two are combined, they are positioned and die-cut based on the upper prism 160 or the boundary of the display area, so that the compensation pad 500 surrounds the upper prism 160 circumferentially in the planar projection. Optionally, the compensation pad 500 forms a continuous closed loop; however, if there is interference from structures such as positioning pillars, it can also be looped in equidistant segments, but each segment still needs to cover the outer edge area of ​​the upper prism 160 to form a near-closed ring structure.

[0061] Furthermore, the edge of the compensation pad 500 is arranged adjacent to the outer edge of the upper prism 160 or the boundary of the display area, maintaining concentricity or equidistant positioning. Rounded corners can be provided at corners to reduce stress concentration and the risk of edge warping. For example, its circumferential width can be substantially consistent with the coverage width of the light-shielding tape 200 on the upper prism 160 side to ensure consistent pressure transmission and light-shielding effect, avoiding intrusion into the effective light-emitting area. It should be noted that the edges of the compensation pad 500 should preferably be cleanly cut and chamfered to avoid burrs affecting the optical and bonding effects; if necessary, small relief lines can be provided to prevent exposed areas or intrusion into the light-emitting area.

[0062] In this embodiment, by circumferentially surrounding the upper prism 160 with compensation pads 500, the compensation pads 500 form a continuous or near-continuous annular support band, achieving filling of the height difference and uniform circumferential pressure. This ensures that the light-shielding tape 200 remains flat and adhered to the frame 170 and the upper prism 160 during application and pressure maintenance, thus solving the problem of insufficient pressure-maintaining support on the upper prism 160 side. Under drop impact and environmental stress, this annular support effectively suppresses local peeling and lifting, reducing the risk of adhesive failure and light leakage at the display area edge. Furthermore, its surrounding shape is consistent with the display area edge, maintaining the neatness of the optical boundary and the consistency of light shielding, which helps improve module reliability and adapt to narrow bezel design requirements.

[0063] In some embodiments, such as Figures 5A-5B , Figures 6A-6C As shown, the light-blocking tape 200 is provided with a plurality of outwardly extending lug structures 210, and the plurality of lug structures 210 are evenly distributed around the upper prism 160 in the orthographic projection of the upper prism 160; the outwardly extending portion of the lug structure 210 at least covers the adhesive frame 170. Each of the aforementioned lug structures 210 is provided with a hollow area 211. The orthographic projection of the hollow area 211 on the frame 170 at least partially coincides with the frame 170, thus exposing the frame 170 to form a blank area 171.

[0064] It should be noted that with the development of full-screen displays, the space around the phone's bezels is constantly shrinking, further reducing the effective bonding area of ​​the backlight module 100BLU's frame 170 and the light-shielding tape 200. However, during module assembly, to ensure device alignment accuracy, a blank area 171 for the light-shielding tape 200 needs to be reserved on the edge of the frame 170 surface to identify the BLU's outer contour. This blank area design results in a small bonding area in some local areas (see reference). Figure 5A and Figure 5B This makes the bonding interface extremely sensitive to environmental stress and process fluctuations. Even without reliability testing, some modules may still exhibit light leakage issues in the 171 white area during final inspection. Under long-term environmental stress, the delamination area will gradually expand, exacerbating the light leakage range and becoming a major hidden danger to the reliability of the display module.

[0065] To address the aforementioned issues, this embodiment provides a display module including a backlight module 100 (BLU), a frame 170, an upper prism 160, and light-shielding tape 200. In the backlight module 100, the frame 170 is fixed to a backplate 110 and surrounds the outer periphery of the upper prism 160, serving to limit the position of the upper prism 160. The light-shielding tape 200 is laid on the side of the frame 170 away from the backplate 110, partially covering the upper prism 160 and the frame 170 under the projection of the backplate 110 in the normal direction (perpendicular to the backplate 110). Since the module assembly equipment needs to perform alignment identification through the boundary of the frame 170, a blank area (blank area 171) needs to be reserved on the surface of the frame 170, and the light-shielding tape 200 cannot completely cover the outer contour. To this end, multiple outwardly extending lug structures 210 (lugs) are designed on the edge of the light-blocking tape 200. The lugs are distributed around the orthographic projection of the upper prism 160, and the outward extension of each lug at least covers the surface of the frame 170. At the same time, a cutout area 211 is opened inside the lug. This cutout area 211 corresponds to the surface of the frame 170 in the planar projection, so that part of the frame 170 is exposed, forming the blank window (blank area 171) required for identification.

[0066] Specifically, in terms of connection, the light-shielding tape 200 is tightly fitted to the top surface of the frame 170, and the lug structure 210 extends partially across the outer edge of the frame 170, forming an additional widened bonding surface, thereby providing enhanced bonding area around the blank area 171. The central cutout area 211 of each lug corresponds to the blank area 171 formed by the frame 170, ensuring that the automatic assembly equipment can accurately identify the module boundary. In addition, to ensure that the identification window is fully exposed, the size of the cutout area 211 is slightly larger than the corresponding area of ​​the frame 170 within the assembly tolerance range, avoiding coverage due to positional deviation.

[0067] Optionally, the lug structure 210 can be rectangular, trapezoidal, or arc-shaped, extending parallel to the edge of the adhesive frame 170 to increase the effective bonding area. The cutout area 211 can be a U-shaped or elongated structure, ensuring the clarity of the blank window while retaining the tape skeleton to maintain the mechanical strength of the lug. To further enhance the fixing force, after the front is applied, the lug can be folded back to cover the outer side wall or back plate 110 of the adhesive frame 170, forming an anchoring effect in different directions. Specifically, the surface of the adhesive frame 170 of the display module can be designed with 6 blank areas 171 (4 on the long side and 2 on the short side), and the lug structure 210 and the cutout area 211 can be distributed in this number to meet the identification and fixing requirements.

[0068] For example, in this embodiment, the main body of the light-shielding tape 200 ensures continuous light blocking around the entire circle, the protruding portion of the lug structure 210 provides additional adhesive support, and the cutout area 211 overlaps with the blank portion of the adhesive frame 170, enabling the device to easily identify the module boundary. Furthermore, the folded-back cover of the lug forms additional fixing clamps with the back plate 110 and the periphery of the adhesive frame 170, thereby mechanically strengthening the fixing effect and preventing peeling expansion due to insufficient adhesive area.

[0069] For example, in practical applications, the light-shielding tape 200 and the lug can be made of one-piece die-cut black double-sided tape, which has high light-shielding rate, low reflection and good weather resistance. Meanwhile, the cut-out edge of the cut-out area 211 must be smooth and free of burrs to ensure recognition accuracy. The thickness of the light-shielding tape 200 should match the step height of the frame 170 to avoid suspension or curling edges. In addition, the lug and the cut-out area 211 need to be accurately positioned through high-precision die-cutting. Optionally, the opening size of the cut-out area 211 is 0.1~0.2 mm larger than the blank area 171 to compensate for assembly tolerances.

[0070] This embodiment, by setting lugs and a hollow area 211 on the light-shielding tape 200, not only ensures the blank area 171 required for alignment recognition, but also increases the effective adhesive area around the blank area 171, thereby ensuring that the light-shielding tape 200 firmly covers the frame 170. At the same time, during the pressing process, the protruding part of the lug can evenly transmit pressure, avoiding stress concentration in the blank area 171 due to insufficient adhesion. In addition, when the whole machine is subjected to drop impact or long-term environmental stress, the lug structure 210 and the anti-folding anchor further enhance the adhesion, suppress local delamination and peeling expansion, effectively reduce the risk of light leakage, and improve the reliability of the module, which is particularly suitable for the process requirements of narrow or ultra-narrow bezel products.

[0071] In some embodiments, such as Figures 6A-6CAs shown, the outward extension length of the lug structure 210 is at least greater than 1 / 2 of the height of the frame 170 in the direction perpendicular to the back plate 110, and the outward extension portion of the lug structure 210 is bent along the direction perpendicular to the back plate 110 and fixed to the periphery of the frame 170, forming a folded edge.

[0072] Exemplarily, the display module includes a backlight module 100 (BLU), a frame 170, an upper prism 160, and light-shielding tape 200 thereon. The frame 170 is disposed on one side of the back plate 110 and surrounds the upper prism 160, and has a height H in the normal direction. The light-shielding tape 200 is applied along the top surface of the frame 170, and multiple outwardly extending lug structures 210 are provided on the edge. These lugs are distributed around the upper prism 160, which both increase mechanical fixing support and do not obstruct the blank area 171 of the tooling alignment and recognition window.

[0073] For example, the outward extension length L of each lug structure 210 along the outer side of the frame 170 is designed to be L≥1 / 2H. The outward extension of the lug is bent along the normal direction, crossing the outer edge of the frame 170 and at least fixed to the periphery of the frame 170, forming a continuous or near-continuous folded edge, and may also extend further towards the back panel 110. The light-shielding tape 200 is mainly bonded to the top surface of the frame 170, and the folded edge of the lug provides additional mechanical fixation on the outer side or back. Furthermore, the lug is provided with a cutout area 211, the projection of which at least partially overlaps with the frame 170 to form a blank area 171, ensuring device alignment and recognition.

[0074] For example, taking a lug structure 210 with a diameter of 0.7H as an example, the lug structure 210 is bent at a 90° angle to fold to the side wall. Optionally, a half-break line or indentation line can be set at the lug as a bending reference to ensure consistent bending in mass production. In addition, the lug can also be arranged in equidistant segments to avoid obstacles such as positioning posts or openings. Furthermore, if used with a compensation pad 500, the main body area of ​​the lug and the compensation pad 500 together support the light-shielding tape 200, making the top surface flat with the side of the upper prism 160, and the folded edge provides outer edge mechanical locking.

[0075] Specifically, the main body of the light-shielding tape 200 provides surface adhesion strength on the top surface of the frame 170. The folded edge folds down the free edge and adheres it to the outer wall or outer edge of the frame 170, forming an L-shaped or U-shaped wrapping to improve the overall peel resistance. At the same time, the blank area 171 formed by the hollow area 211 on the frame 170 ensures visual recognition of the machine, while the two sides of the lug provide circumferential reinforcement to suppress the expansion of adhesive separation in the blank area 171. The inner side is supported at the same height and with uniform pressure by the compensation pad 500, while the outer folded edge provides mechanical anchoring, realizing dual-path fixation inside and outside.

[0076] For example, the light-shielding tape 200 and the lug can be integrally die-cut and selected as black acrylic pressure-sensitive adhesive (PSA). At the same time, it can be combined with polyethylene terephthalate (PET) or micro-foamed substrate to meet the requirements of high light-shielding, low reflection and good weather resistance, and be compatible with the material of the frame 170 / upper prism 160 to avoid migration and adhesive overflow.

[0077] This embodiment upgrades the single-interface bonding, which was originally only located on the top normal surface of the frame 170, to a double-interface anchoring on both the top and outer surfaces through the extension length design of the lug structure 210 and the folded edge fixing design. This effectively increases the equivalent bonding area and the anti-peeling path length. At the same time, this structure maintains bonding stability under drop, thermal shock, and humid and hot environments, and suppresses the expansion of adhesive separation in the blank area 171 along the long side.

[0078] In some embodiments, such as Figures 6A-6C As shown, the length of the lug structure extending outward is greater than the height of the frame 170 in the direction perpendicular to the back plate 110, and the portion of the folded edge that extends beyond the frame 170 is bent and covered on the back plate 110.

[0079] Exemplarily, the display module includes a backlight module 100, a frame 170, an upper prism 160, and a light-shielding tape 200. The light-shielding tape 200 has multiple lug structures distributed around the circumference of the upper prism 160. The length of each lug structure extending outward in the horizontal direction is greater than the height of the frame 170 in the direction perpendicular to the back plate 110. During assembly, the extended portion of the lug is bent vertically to form a folded edge. This folded edge extends beyond the frame 170 and covers the surface of the back plate 110, thereby forming an additional mechanical fixation between the light-shielding tape 200 and the frame 170.

[0080] In practical applications, the folded edge of the lug area structure can be completed through die-cutting pre-forming and composite pressing processes. When applying the light-shielding tape 200, the folded edge of the lug is bent to cover the back plate 110, ensuring that the lug area forms multi-faceted contact with the frame 170 and the back plate 110, thereby enhancing the fixing strength of the light-shielding tape 200 in the blank area 171. The bending angle and thickness of the folded edge can be matched according to the height of the frame 170 and the height difference dimension, so that the light-shielding tape 200 can maintain a flat fit with the frame 170 and the upper prism 160 during the application process, avoiding local delamination on the side of the upper prism 160.

[0081] This embodiment uses a design where the folded edge extends beyond the frame 170 and is bent over the back plate 110. This upgrades the original single-interface bonding, which was only located on the normal top surface of the frame 170, to a three-interface anchoring of the top surface of the frame 170, the outer side surface of the frame 170, and the back plate 110. When the entire device is dropped or impacted, the folded edge of the lug can provide support and cushioning, sharing the stress between the light-shielding tape 200 and the frame 170. This effectively suppresses the light-shielding tape 200 from coming off in the blank area 171 and reduces the risk of light leakage at the edge of the display module.

[0082] In some embodiments, such as Figures 6A-6C As shown, the distance between the inner and outer edges of the blank area 171 is 0.05-0.15mm.

[0083] For example, in the lug structure 210 of the light-shielding tape 200, a cutout area 211 is formed near the edge of the frame 170 to create a blank area 171 on the frame 170, keeping the frame 170 exposed in this area. The distance between the inner and outer edges of the blank area 171 is controlled within the range of 0.05-0.15mm. This distance refers to the width between the inner edge of the blank area 171 and the corresponding side edge of the frame 170 when projected in a direction perpendicular to the back plate 110. The lug structure 210 of the light-shielding tape 200 provides surrounding support for the frame 170 by being applied to the surface of the frame 170 and partially bent and fixed to the periphery of the frame 170 or the back plate 110, while the blank area 171 keeps the outer contour of the frame 170 visible.

[0084] Specifically, during assembly, the lug area structure is in close contact with the back plate 110 through folding and edge binding. The opening of the blank area 171 precisely corresponds to the outer contour of the frame 170, so that the frame 170 is both exposed and supported by the light-shielding tape 200 in the blank area 171. The inner and outer edge distances are between 0.05-0.15mm, ensuring that the blank area 171 meets the requirements of module assembly for BLU outer contour recognition, and also provides sufficient contact area to support the light-shielding tape 200, avoiding delamination due to insufficient adhesive area.

[0085] In this embodiment, by controlling the width of the blank area 171 to be between 0.05 and 0.15 mm, it can be ensured that during module assembly, the lug structure 210 can accurately cover the edge of the frame 170 without obstructing the recognition area. At the same time, when the whole machine is dropped or subjected to vibration and impact, the bending and anchoring effect of the lug structure 210 can be combined to evenly distribute the stress, effectively preventing the blank area 171 from coming off and reducing the risk of light leakage at the edge.

[0086] In some embodiments, such as Figures 6A-6C As shown, the opening of the hollow area 211 is a hexagonal opening, which is composed of a rectangle and a trapezoid spliced ​​together at the bottom edge, and the trapezoidal part corresponds to the blank area.

[0087] For example, the hollow area 211 of the lug structure 210 of the light-shielding tape 200 is a hexagonal opening, used to form an exposed area on the outer contour of the frame 170. The hexagonal opening is located along the lug near the edge of the frame 170, and its size matches part of the outer contour of the frame 170, so that after assembly, the light-shielding tape 200 can both cover the surface of the frame 170 and maintain the partial visibility of the blank area 171 to the surface of the frame 170. The hexagonal opening is composed of a rectangle and a trapezoid with their bottom edges joined together, and the trapezoidal portion corresponds to the blank area.

[0088] Specifically, the lug structure 210 of the light-shielding tape 200 is fixed to the surface of the back plate 110 by folding and pressing. The trapezoidal opening corresponds exactly to the original blank position of the frame 170, ensuring the assembly accuracy and positioning reliability of the module. In addition, the edge design of the opening needs to take into account the elasticity and process tolerance of the light-shielding tape 200, so that the opening will not cause material stretching or cracking during assembly and subsequent pressure holding.

[0089] This embodiment sets a hexagonal opening in the hollow area 211, which can not only meet the alignment and recognition requirements of the blank area 171 of the module, but also ensure that the lug structure 210 provides sufficient support when dropped or subjected to vibration and impact, and prevent the light-blocking tape 200 from coming off and leaking light in the blank area 171.

[0090] In some embodiments, such as Figure 7 and Figure 8 As shown, it also includes a protective housing 700, which is disposed on the side of the back plate 110 away from the upper prism 160; A buffer structure 400 is provided between the back plate 110 and the protective housing 700, and the orthographic projection of the buffer structure 400 on the back plate 110 is located at least on opposite sides of the back plate 110.

[0091] For example, refer to Figure 7 The overall stacked structure of the device consists of three layers: the top layer is the display panel 300, which can be considered the front shell of the device; the middle layer is the mid-shell, which provides the main structural support for the device, with the display module placed on top and the battery, motherboard, sub-board, and other components placed below; the bottom layer is the rear shell 800, which mainly protects and encapsulates the components below the mid-shell through sealing. Optionally, the display panel 300 and the mid-shell can be fixed together by a ring of sealing adhesive 710; the mid-shell and the rear shell can be connected by a sealing strip.

[0092] Furthermore, to avoid defects caused by compression during assembly and stress, X / Y / Z-direction gaps are reserved between the display module and the main casing. The Z-direction gap 900 is controlled between 0.2mm and 0.35mm to prevent direct compression of the display module's display area by casing deformation during drops, which could cause defects such as white spots, yellow spots, or color spots. However, when the main casing's strength is insufficient or its structure is too soft, this Z-direction gap 900 may actually cause significant deformation of the display module under impact, exacerbating the separation tendency between the light-shielding tape 200 and the upper prism 160, thereby further increasing the risk of localized delamination and light leakage from the outer edges.

[0093] To solve the above problems, refer to Figure 8 In this embodiment, a buffer structure 400 is provided between the back plate 110 of the display module and the middle shell of the whole machine (protective shell 700) to fill the gap (Z-direction gap 900) between the back plate 110 and the middle shell of the whole machine. During the drop of the whole machine, the deformation of the display module is avoided. In particular, the deformation of the frame 170 of the backlight module 100 in the four directions or normal direction is limited, and the separation of the light-shielding tape 200 and the frame 170 is avoided.

[0094] Specifically, the display module includes a backlight module 100, a backplate 110, and a protective housing 700. The protective housing 700 is disposed on the side of the backplate 110 away from the upper prism 160, providing additional mechanical protection for the backlight module 100 and the backplate 110. A buffer structure 400 is provided between the backplate 110 and the protective housing 700, and the orthographic projection of the buffer structure 400 on the backplate 110 covers at least both opposite sides of the backplate 110, thereby forming an effective buffer area between the protective housing 700 and the backplate 110.

[0095] In practical applications, the buffer structure 400 can be made of elastic material or flexible silicone pads, specifically, a support strip with a certain degree of hardness. The thickness and hardness of the buffer structure 400 can be designed according to the size of the backlight module 100 and drop protection requirements to ensure that the buffer structure 400 can absorb and disperse the impact force when the entire device is dropped or impacted, reducing the stress in the stress concentration areas of the back plate 110 and the upper prism 160. In addition, the buffer structure 400 can be fixed to the protective shell 700 by adhesive or mechanical snap-fit, while maintaining a stable distance from the back plate 110 to ensure consistent buffering effect.

[0096] In this embodiment, by setting a buffer structure 400 between the protective housing 700 and the back plate 110, the deformation of the backlight module 100 under stress can be significantly reduced when the whole machine is dropped or subjected to vibration and impact. This reduces the risk of partial peeling between the light-shielding tape 200 and the upper prism 160, thereby effectively suppressing the peeling and light leakage at the edge of the display area and improving the overall reliability of the display module.

[0097] In some embodiments, such as Figure 9B As shown, there are multiple buffer structures 400, and the buffer structures 400 are evenly distributed on the outer periphery of their respective back plates 110.

[0098] For example, the display module includes a backlight module 100, a backplate 110, and a protective housing 700. The protective housing 700 is disposed on the side of the backplate 110 away from the upper prism 160, and is used to provide mechanical protection for the backlight module 100. A plurality of buffer structures 400 are provided between the backplate 110 and the protective housing 700. These buffer structures 400 are evenly distributed along the outer periphery of the backplate 110, and their orthographic projection on the backplate 110 covers the opposite sides and surrounding areas of the backplate 110, thereby forming a surrounding buffer support layout.

[0099] Specifically, each buffer structure 400 can be made of elastic materials such as silicone, foam, or soft polyurethane, with its height and rigidity precisely designed to absorb impact force and disperse stress when the entire device is dropped or impacted, preventing localized stress concentration. The evenly distributed design allows the back panel 110 to maintain overall stability under stress, avoiding localized warping or deformation, while ensuring that the backlight module 100 and the upper prism 160 are supported from all directions.

[0100] This embodiment uses a design with multiple buffer structures 400, which are evenly distributed around the outer periphery of their respective back plates 110. When the entire unit is subjected to a drop impact, the multiple evenly distributed buffer structures 400 can work together to effectively reduce the impact force transmission between the back plate 110 and the protective shell 700, reduce the risk of the light-shielding tape 200 and the upper prism 160 coming unglued and light leakage, thereby improving the drop resistance and overall reliability of the display module.

[0101] In some embodiments, such as Figure 9A As shown, there are two buffer structures 400, which are arranged opposite to each other on both sides of the back plate 110.

[0102] Exemplarily, the display module includes a backlight module 100, a backplate 110, and a protective housing 700. The protective housing 700 is disposed on the side of the backplate 110 away from the upper prism 160, providing additional mechanical protection for the backlight module 100. Two buffer structures 400 are provided between the backplate 110 and the protective housing 700, respectively disposed on opposite sides of the backplate 110, so that the backplate 110 obtains balanced support in the horizontal direction.

[0103] Specifically, each buffer structure 400 is made of elastic material, and its thickness, hardness, and elasticity are designed to absorb impact force and disperse stress during the drop or impact of the entire device. The two buffer structures 400 are arranged opposite each other to keep the back plate 110 stable as a whole when subjected to force, preventing local warping or tilting, while ensuring that the structure of the backlight module 100 and the upper prism 160 is not affected by impact.

[0104] This embodiment uses two buffer structures 400, which are arranged opposite to each other on both sides of the back plate 110. When the whole machine is dropped or vibrated, the two oppositely arranged buffer structures 400 can work together to effectively reduce the transmission of impact force on the back plate 110, reduce the risk of partial peeling and light leakage between the light-shielding tape 200 and the upper prism 160, and thus improve the drop resistance and overall reliability of the display module.

[0105] Based on the same concept, this application also provides a display device, including the display module as described above.

[0106] The beneficial effects of this display device are the same as those of the display module in the above embodiments, and will not be repeated here.

[0107] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in the details for the sake of brevity.

[0108] Additionally, to simplify the description and discussion, and to avoid obscuring the embodiments of this application, the well-known power / ground connections to integrated circuit (IC) chips and other components may or may not be shown in the provided drawings. Furthermore, the apparatus may be shown in block diagram form to avoid obscuring the embodiments of this application, and this also takes into account the fact that the details of the implementation of these block diagram apparatuses are highly dependent on the platform on which the embodiments of this application will be implemented (i.e., these details should be fully understood by those skilled in the art). While specific details (e.g., circuits) have been set forth to describe exemplary embodiments of this application, it will be apparent to those skilled in the art that the embodiments of this application can be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0109] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications, and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may be used with the embodiments discussed.

[0110] The embodiments of this 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 this application should be included within the protection scope of this application.

Claims

1. A display module, characterized in that, include: A backlight module includes: a back plate, an upper prism, and a frame. The upper prism is disposed on one side of the back plate, and the frame is connected to the back plate and surrounds the upper prism. In a direction perpendicular to the back plate, there is a height difference between the surface of the frame away from the back plate and the surface of the upper prism away from the back plate. A light-shielding tape is attached to the surface of the frame away from the back panel. The orthographic projection of the light-shielding tape onto the back panel coincides with the orthographic projection of the upper prism onto the back panel to form an overlapping area. In the overlapping area, a compensation pad is provided between the light-shielding tape and the upper prism to compensate for the height difference; the light-shielding tape is connected to the upper prism through the compensation pad.

2. The display module according to claim 1, characterized in that, The thickness of the compensation pad is adapted to the height of the height difference.

3. The display module according to claim 2, characterized in that, The orthographic projection of the compensation pad in a direction perpendicular to the back plate surrounds the circumference of the upper prism.

4. The display module according to claim 1, characterized in that, The light-shielding tape has multiple outwardly extending lug structures, and the multiple lug structures are evenly distributed around the upper prism in the orthographic projection of the upper prism; the outwardly extending portion of the lug structure at least covers the adhesive frame. Each of the aforementioned lug structures is provided with a hollow area, the orthographic projection of the hollow area on the frame at least partially coincides with the frame, and the exposed frame forms a blank area.

5. The display module according to claim 4, characterized in that, The outward extension length of the lug structure is at least greater than 1 / 2 of the height of the frame in the direction perpendicular to the back plate, and the outward extension portion of the lug structure is bent along the direction perpendicular to the back plate and fixed to the periphery of the frame, forming a folded edge.

6. The display module according to claim 5, characterized in that, The length of the lug structure extending outward is greater than the height of the frame in the direction perpendicular to the back panel, and the portion of the folded edge that extends beyond the frame is bent and covered on the back panel.

7. The display module according to claim 4, characterized in that, The distance between the inner and outer edges of the blank area is 0.05-0.15mm.

8. The display module according to claim 4, characterized in that, The opening of the hollow area is a hexagonal opening, which is composed of a rectangle and a trapezoid joined together at the bottom edge, and the trapezoidal part corresponds to the blank area.

9. The display module according to any one of claims 1-8, characterized in that, It also includes a protective housing, disposed on the side of the back plate away from the upper prism; A buffer structure is provided between the back plate and the protective shell, and the orthographic projection of the buffer structure on the back plate is located at least on opposite sides of the back plate.

10. The display module according to claim 9, characterized in that, There are multiple buffer structures, and the buffer structures are evenly distributed on the outer periphery of their respective back plates.

11. The display module according to claim 9, characterized in that, There are two buffer structures, which are arranged opposite each other on both sides of the back plate.

12. A display device, characterized in that, Includes the display module as described in any one of claims 1-11.

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