Display module and display device

Abstract

This utility model provides a display module and display device. The display module of this utility model includes a display panel, a raised block, a flexible circuit board, and a driving circuit. The display panel has a light-emitting side and a backlight side disposed opposite to each other along its thickness direction. One end of the flexible circuit board is connected to the light-emitting side of the display panel, and the other end of the flexible circuit board is bent and extended toward the backlight side of the display panel, and the other end of the flexible circuit board is connected to the second side of the raised block. A locking portion is provided on one of the flexible circuit board and the raised block, and a mating portion is provided on the other of the flexible circuit board and the raised block. The locking portion and the mating portion engage. Therefore, the display module according to this utility model can solve the problem of the flexible circuit board rebounding and warping.

Description

Technical Field

[0001] This utility model relates to the field of display technology, specifically to a display module and a display device having the display module. Background Technology

[0002] Display devices generally include a display panel, a back panel, and a circuit board. In related technologies, to meet the requirement of narrow bezels in display devices, the circuit board is usually bent to the side of the back panel away from the display panel and can be bonded to the back panel and the printed circuit board. However, the flexible circuit board has a large rebound force after being bent, which makes it easy for the flexible circuit board to bounce up after being heated or used for a period of time, causing display failure. Utility Model Content

[0003] In view of this, the present invention aims to provide a display module and display device to solve the problem in the prior art where insufficient adhesive strength between the shim and the flexible circuit board causes the flexible circuit board to bounce and lift, resulting in display failure.

[0004] This utility model provides a display module.

[0005] Another aspect of this utility model provides a display device.

[0006] The display module of this utility model embodiment includes a display panel, a raised block, a flexible circuit board, and a driving circuit.

[0007] The display panel has a light-emitting side and a backlight side disposed opposite to each other along its thickness direction. The light-emitting side includes a display area and a non-display area extending outward from the outer periphery of the display area. The non-display area is disposed in a receiving cavity of the middle frame. The shim has a first side and a second side disposed opposite to each other along the thickness direction of the display panel. The first side of the shim is connected to the backlight side. One end of the flexible circuit board is connected to the non-display area of ​​the light-emitting side of the display panel. The driving circuit is connected between the display panel and the flexible circuit board. The other end of the flexible circuit board is bent toward the backlight side of the display panel, and the other end of the flexible circuit board is connected to the second side of the shim. The backlight module is disposed opposite to the backlight side of the display panel. A locking part is provided on one of the flexible circuit board and the shim, and a mating part is provided on the other of the flexible circuit board and the shim. The locking part and the mating part engage.

[0008] The display module of this utility model connects a flexible circuit board to the light-emitting side of the display panel and a raised block located on the backlight side of the display panel after bending the flexible circuit board. The flexible circuit board and the raised block are reinforced by locking and mating parts, increasing the rigidity and stability of the overall structure. This reduces the risk of deformation or damage caused by external stress and avoids problems such as screen flicker, image distortion, and touch function failure caused by insufficient adhesive or excessive rebound force in the bending area of ​​the flexible circuit board, leading to reliability issues, contact point detachment or poor contact between the flexible circuit board and the raised block on the display panel or the driving circuit, and signal transmission interruption or instability. The locking structure between the flexible circuit board and the raised block effectively improves the service life and image quality of the display device equipped with this display module.

[0009] In addition, the locking and mating parts provided between the flexible circuit board and the shim block also play a role in mechanical positioning during the assembly process, reducing human error and cumulative error during assembly, ensuring precise alignment between the drive circuit and the display panel, improving image quality and response speed, and improving overall assembly accuracy and efficiency.

[0010] Therefore, the display module of this utility model effectively avoids the screen display failure caused by the rebound and warping of the flexible circuit board. This not only improves the stability and service life of the display device, but also improves the accuracy and efficiency of the display module assembly.

[0011] In one embodiment, the shim includes a shim body and a limiting protrusion. The shim body is stacked on the backlight side of the display panel. The limiting protrusion extends from one side of the shim body in the thickness direction toward a direction away from the display panel to protrude from the shim body to form the locking portion. A mating hole is provided on the flexible circuit board, and the limiting protrusion passes through the mating hole.

[0012] In one embodiment, there are multiple locking parts and multiple engaging parts, and the multiple locking parts engage with the multiple engaging parts in a one-to-one correspondence.

[0013] In one embodiment, the flexible circuit board includes a bonding section, a bending section, and a fixing section connected in sequence. The bonding section is connected to the light-emitting side of the display panel, the fixing section is connected to the second side of the raised body, and the bending section and / or the fixing section are provided with the mating hole.

[0014] In one embodiment, the length of the binding segment is 0.41mm-0.65mm.

[0015] In one embodiment, the length of the bent segment is 1.2mm-2mm.

[0016] In one embodiment, the length of the fixed segment is 4mm-8mm.

[0017] In one embodiment, the thickness of the flexible circuit board is 0.049mm-0.059mm.

[0018] In one embodiment, the mating hole is located in the region of the bent section near the fixed section.

[0019] In one embodiment, there is a gap between the edge of the display panel and the bent segment.

[0020] In one embodiment, the display module further includes an anti-detachment component, one end of the limiting protrusion extending out of the mating hole, and the anti-detachment component stopping the end of the limiting protrusion extending out of the mating hole.

[0021] In one embodiment, the anti-detachment component has a groove, and one end of the limiting protrusion is disposed in the groove.

[0022] In one embodiment, the height of the limiting protrusion protruding from the flexible circuit board is 0.06mm-0.15mm.

[0023] In one embodiment, the anti-detachment component is foam adhesive or flexible silicone.

[0024] In one embodiment, the anti-detachment component is in contact with the flexible circuit board.

[0025] In one embodiment, the plurality of mating holes are spaced apart along the width direction of the display panel.

[0026] In one embodiment, the diameter of the mating hole is 0.5mm-1.0mm.

[0027] In one embodiment, the thickness of the raised body is 0.25mm-0.3mm.

[0028] In one embodiment, the cross-section of the limiting protrusion is one of a circle, a square, a plum blossom shape, a pentagon, or a hexagon, and the cross-sectional area of ​​the mating hole is adapted to the shape and size of the cross-section of the limiting protrusion.

[0029] In one embodiment, the anti-detachment component is in contact with the flexible circuit board, and the overlap area between the anti-detachment component and the flexible circuit board is ≥1mm. 2 .

[0030] In one embodiment, the height of the limiting protrusion is equal to the thickness of the flexible circuit board plus H, where H is 0.1mm-0.5mm.

[0031] In one embodiment, the raised body includes a main body, a constricted portion, and a limiting portion connected in sequence, the limiting portion having a limiting groove, and the driving circuit being disposed within the limiting groove.

[0032] The display device of this utility model embodiment includes the display module as described in any one of the above-described embodiments. Attached Figure Description

[0033] Figure 1 This is a partial structural schematic diagram of the display module according to an embodiment of the present utility model.

[0034] Figure 2 This is a cross-sectional view of the anti-detachment component according to an embodiment of the present utility model.

[0035] Figure 3 This is a schematic diagram of the flexible circuit board in the display module of this utility model before it is bent.

[0036] Figure 4 This is a schematic diagram of the flexible circuit board in the display module of this utility model after bending.

[0037] Figure 5 This is a schematic diagram of the structure of the shim block according to an embodiment of the present invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] Display panel 1;

[0040] Elevating block 2; Elevating body 21; Main body 211; Narrowing part 212; Limiting part 213; Limiting groove 214; Limiting protrusion 22;

[0041] Flexible circuit board 3; bonding section 31; bending section 32; fixing section 33; mating hole 34;

[0042] Drive circuit 4;

[0043] Anti-detachment component 5. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0045] In the display field, integrated circuit (IC) packaging technologies typically include chip-on-film (COF), chip-on-glass (COG), and chip-on-pi (COP). Taking COF as an example, COF fixes the integrated circuit onto a flexible circuit substrate 3, which is then used to fix the display panel 1. COF is also known as a backlight gold finger. This flexible circuit substrate 3 is usually a thin film made of polyimide. In OLED displays, COF is used to connect the display panel 1 and the driver IC. Exemplarily, the display panel 1 can be any of the following self-emissive display panels: organic light-emitting diode (OLED) display panel 1, quantum dot light-emitting diode (QLED) display panel 1, and miniLED or microLED display panel 1; it can also be a liquid crystal display (LCD) panel. This disclosure does not impose excessive limitations on this.

[0046] The following is for reference. Figures 1-5 The following describes the display module and display device according to embodiments of the present utility model.

[0047] The display module of this utility model embodiment includes a middle frame, a backlight module, a display panel 1, a raised block 2, a flexible circuit board 3, and a driving circuit 4.

[0048] The mid-frame has an open receiving cavity. The display panel 1 has a light-emitting side and a backlight side arranged opposite each other along its thickness direction. The light-emitting side includes a display area and a non-display area extending outward from the outer periphery of the display area (the non-display area further includes a sealing area, a fan-out area, and a bonding area). The non-display area is located in the receiving cavity of the mid-frame. The pad 2 has a first side and a second side arranged opposite each other along the thickness direction of the display panel 1. The first side of the pad 2 is connected to the backlight side. One end of the flexible circuit board 3 is connected to the non-display area of ​​the light-emitting side of the display panel 1. The driving circuit 4 is connected between the display panel 1 and the flexible circuit board 3. The other end of the flexible circuit board 3 is bent toward the backlight side of the display panel 1, and the other end of the flexible circuit board 3 is connected to the second side of the pad 2. The backlight module is arranged opposite to the backlight side of the display panel 1. It can be understood that after the flexible circuit board 3 is bent, it is connected to the light-emitting side of the display panel 1 and the pad 2 located on the backlight side of the display panel 1.

[0049] One of the flexible circuit board 3 and the raised block 2 is provided with a locking part, and the other of the flexible circuit board 3 and the raised block 2 is provided with a mating part, and the locking part and the mating part are engaged. In other words, the flexible circuit board 3 is provided with a locking part, and the raised block 2 is provided with a mating part; or, the raised block 2 is provided with a locking part, and the flexible circuit board 3 is provided with a mating part.

[0050] The display module of this utility model, by bending a flexible circuit board 3 and connecting it to the light-emitting side of the display panel 1 and the raised block 2 located on the backlight side of the display panel 1 respectively, and the flexible circuit board 3 and the raised block 2 are reinforced by locking and mating parts, increases the rigidity and stability of the overall structure, reduces the risk of deformation or damage caused by external stress, and avoids problems such as screen flickering, image distortion, and touch function failure caused by insufficient adhesive or weak adhesion between the flexible circuit board 3 and the raised block 2, or excessive rebound force in the bending area of ​​the flexible circuit board 3 (e.g., COF) leading to abnormal reliability, detachment or poor contact between the flexible circuit board 3 and the display panel 1 or driving circuit 4, and contact failure at the contact points. The locking structure between the flexible circuit board 3 and the raised block 2 effectively improves the service life and image quality of the display device with this display module.

[0051] In addition, the locking and mating parts provided between the flexible circuit board 3 and the raised block 2 also play a role in mechanical positioning during the assembly process, reducing human error and cumulative error during the assembly process, ensuring precise alignment between the drive circuit 4 (drive IC) and the display panel 1, improving image quality and response speed, and improving overall assembly accuracy and efficiency.

[0052] Therefore, the display module of this utility model embodiment effectively avoids the screen display failure caused by the rebound and warping of the flexible circuit board 3. This not only improves the stability and service life of the display device, but also improves the accuracy and efficiency of the display module assembly.

[0053] Optionally, the display panel 1 can be a rectangular display panel 1. For example, the outer periphery shape of both the display area and the non-display area can be rectangular. In other embodiments of this application, the display panel 1 can also be a circular display panel 1, with the display area in the display panel 1 being circular (for example, a display panel 1 used in a watch).

[0054] Exemplarily, the display module may further include a polarizing layer, a touch layer, a cover glass, and optical sensors (not shown). The polarizing layer may be disposed on the side of the light-emitting surface of the display panel 1, and is configured to mitigate the adverse effects of ambient light incident and reflected on the display effect of the display module. The touch layer may employ on-cell touch technology, in-cell touch technology, or external touch technology. The cover glass is disposed on the top layer of the display module to protect other structures within the display module. The optical sensor may be a texture sensor and / or an image sensor. The texture sensor is used for texture recognition to improve usability, and the image sensor is configured to acquire images. Furthermore, the optical sensor used in this display module may be an under-display optical sensor, allowing the area of ​​the display panel 1 corresponding to the optical sensor to still achieve normal display, thereby meeting consumers' demand for full-screen displays.

[0055] The shim block 2 includes a shim body 21 and a limiting protrusion 22. The shim body 21 is stacked on the backlight side of the display panel 1. The limiting protrusion 22 extends from one side of the thickness direction of the shim body 21 toward a direction away from the display panel 1 to protrude from the shim body 21 to form a locking part. The flexible circuit board 3 has a mating hole, and the limiting protrusion 22 passes through the mating hole.

[0056] Specifically, the flexible circuit board 3 is stacked on the side of the raised block 2 facing the backlight module, and the limiting protrusion 22 extends towards the side closer to the backlight module and protrudes from the raised body 21. The flexible circuit board 3 is provided with a through hole, and the limiting protrusion 22 passes through the mating hole. For example, Figure 1 As shown, the flexible circuit board 3 is stacked on the upper surface of the pad block 2, the limiting protrusion 22 protrudes upward from the pad body 21, the flexible circuit board 3 is provided with a through hole, and the limiting protrusion 22 passes through the mating hole.

[0057] The display module of this embodiment of the utility model divides the raising block 2 into a raising body 21 and a limiting protrusion 22, and provides mating holes on the flexible circuit board 3. The structure of the limiting protrusion 22 and the holes is relatively easy to process, and during installation, the limiting protrusion 22 can be inserted into the mating hole first, and then the rest of the flexible circuit board 3 can be fixed, thereby achieving a good positioning effect. This improves the ease of assembly of the display module. Therefore, the display module of this embodiment of the utility model has the advantages of simple structure and high ease of processing and assembly.

[0058] Optionally, the raised body 21 and the limiting protrusion 22 can be a single integrated structure. The integrated raised block 2 has the advantages of good integrity and high structural stability. Furthermore, the cross-section of the limiting protrusion 22 can be designed in various shapes such as circular, square, plum blossom-shaped, pentagonal, or hexagonal. In specific implementations, a square, plum blossom-shaped, pentagonal, or hexagonal shape is preferred. This structure avoids the problem of the flexible circuit board 3 being stretched due to rotation around the limiting protrusion 22, thus affecting normal display.

[0059] Furthermore, both locking portions and mating portions are multiple, with each locking portion engaging with a corresponding mating portion. It is understood that both locking portions and mating holes are multiple, with multiple limiting protrusions 22 correspondingly passing through multiple mating holes. This further enhances the connection strength between the flexible circuit board 3 and the display panel 1. For example, as... Figure 3 and Figure 4 As shown, multiple locking parts are arranged along the width direction of the display panel 1 (e.g., ...). Figure 4 The left and right directions shown are spaced apart.

[0060] Furthermore, the diameter of the mating hole is 0.5mm-1.0mm. Optionally, the diameter of the mating hole is 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm and 1.0mm.

[0061] The display module of this embodiment, by limiting the diameter range of the mating holes on the flexible circuit board 3, avoids the problem that excessively large hole diameters would significantly weaken the structural strength of the flexible circuit board 3, especially under frequent bending or external force, which could easily lead to fatigue or even breakage of the flexible circuit board 3. At the same time, excessively large hole diameters can also change the stress distribution, causing stress to concentrate in the edge area of ​​the hole, thereby further increasing the risk of cracking or damage to the flexible circuit board 3. Moreover, excessively large hole diameters occupy more space, which may make signal line layout difficult, especially in high-density wiring applications, potentially failing to meet electrical connection requirements and affecting signal transmission quality. Furthermore, excessively large hole diameters on the flexible circuit board 3 can also result in insufficient tightness in the fit with limiting posts or other components, reducing assembly accuracy and increasing the risk of positional misalignment.

[0062] On the other hand, this avoids the problem of the limiting protrusion 22 being unable to be smoothly inserted due to an excessively small diameter of the mating hole. This requires higher operational precision, increases the complexity of manual or automated production, increases assembly difficulty, and may even prevent precise alignment. Increased assembly difficulty may lead to a higher assembly failure rate, thereby increasing rework costs.

[0063] like Figure 1As shown, the flexible circuit board 3 includes a bonding section 31, a bending section 32, and a fixing section 33 connected in sequence. The bonding section 31 is connected to the light-emitting side of the display panel 1, and the fixing section 33 is connected to the second side of the raised body 21. The bending section 32 and / or the fixing section 33 are provided with mating holes. It can be understood that the mating holes are provided on the bending section 32; or, the mating holes are provided on the fixing section 33; or, the mating holes are provided on both the bending section 32 and the fixing section 33. For example, Figure 1 As shown, the mating hole is only located on the bent section 32 and is fixedly connected to the raised body 21 via the fixing section 33.

[0064] The display module of this embodiment of the utility model is designed by dividing the flexible circuit board 3 into a bonding section 31, a bending section 32, and a fixing section 33 connected in sequence. The bending section 32 allows bending within a limited space to adapt to the internal structure of devices of different shapes and sizes, making full use of three-dimensional space. This not only improves integration and space utilization, but also enhances reliability, simplifies the assembly process, and improves the user experience.

[0065] Optionally, the fixing segment 33 can be attached to the backlight surface and can be fixed to the backlight surface by adhesive, welding or other means. The fixing segment 33 can also be a flexible structure. For example, the fixing segment 33 may include a flexible substrate of polyimide or other flexible materials.

[0066] In some embodiments, the length of the bonding segment 31 is controlled between 0.41mm and 0.65mm. It is understood that the connection length between the flexible circuit board 3 and the light-emitting side of the display panel 1 is 0.41mm-0.65mm.

[0067] The display module of this utility model, by limiting the length range of the binding segment 31, avoids the binding segment 31 from being too long. An excessively long binding segment 31 would occupy more edge space, making it difficult to achieve a narrow bezel or bezel-less design. An excessively long connection length may also increase the overall size of the device, which is not conducive to miniaturization design. At the same time, a longer connection segment is more prone to fatigue damage during frequent bending, especially when the device is frequently opened, closed, or folded, which may lead to breakage or other mechanical failures.

[0068] On the other hand, it avoids the problem of the bonding segment 31 being too short. An excessively short connection length would pose a significant challenge to the assembly process, as limited operating space would increase assembly difficulty and time, potentially leading to a higher rework rate. A shorter connection segment might also fail to effectively dissipate the heat generated by the driver IC and other components, resulting in excessively high local temperatures and affecting the lifespan and stability of electronic components.

[0069] Therefore, the display module of this utility model embodiment has the advantages of miniaturization and convenient installation.

[0070] Optionally, the length of the binding segment 31 is 0.41mm, 0.42mm, 0.43mm, 0.44mm, 0.45mm, 0.46mm, 0.47mm, 0.48mm, 0.49mm, 0.50mm, 0.51mm, 0.52mm, 0.53mm, 0.54mm, 0.55mm, 0.56mm, 0.57mm, 0.58mm, 0.59mm, 0.60mm, 0.61mm, 0.62mm, 0.63mm, 0.64mm, and 0.65mm.

[0071] The length of the bending segment 32 is 1.2mm-2mm. Specifically, the bending segment 32 in the flip-chip film refers to the part of the circuit board that allows bending when connecting the display panel 1 to the driver IC or other components.

[0072] The display module of this embodiment, by limiting the length range of the bending segment 32, avoids two problems. Firstly, it prevents the bending segment 32 from being too long, which would occupy more edge space and potentially increase the overall size of the device, hindering miniaturization. Therefore, the display module of this embodiment is beneficial for achieving device miniaturization. Secondly, it avoids the bending segment 32 being too short, which would pose significant challenges to the assembly process. Due to limited operating space, this would increase assembly difficulty and time, leading to a higher rework rate. A bending segment 32 that is too short would result in an excessively large bending angle, which increases the risk of material fatigue damage. Therefore, the display module of this embodiment has the advantages of miniaturization and ease of installation.

[0073] Optionally, the length of the bent segment 32 is 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm and 2.0mm.

[0074] The length of the fixing segment 33 is 4mm-8mm. The fixing segment 33 refers to the segment used when connecting the backlight side of the display panel 1 to the driver IC or other components.

[0075] The display module of this embodiment, by limiting the length range of the fixed segment 33, avoids two problems: firstly, the fixed segment 33 being too long, which might affect the assembly of the middle frame; secondly, the fixed segment 33 being too short, which would reduce the connection area with the shim block 2 and the backlight side of the display panel 1, and also would limit the layout of other drives if the fixed segment 33 were too short. Therefore, the display module of this embodiment has the advantages of miniaturization and convenient installation.

[0076] Optionally, the length of the fixed segment 33 is 4mm, 5mm, 6mm, 7mm and 8mm.

[0077] The thickness of the flexible circuit board 3 is 0.049mm-0.059mm.

[0078] The display module of this embodiment, by limiting the thickness range of the flexible circuit board 3, avoids the following: Firstly, excessive thickness of the flexible circuit board 3 would significantly reduce its flexibility, making it prone to breakage or damage in applications requiring frequent bending. Secondly, an excessively thick flexible circuit board 3 would have excessive rebound force after bending, easily causing it to warp and leading to reliability issues. Therefore, the display module of this embodiment, by reasonably setting the thickness of the flexible circuit board 3, further avoids screen display failures caused by the warping of the flexible circuit board 3.

[0079] On the other hand, it also avoids the problem of the flexible circuit board 3 being too thin. An excessively thin flexible circuit board 3 lacks sufficient mechanical strength and is prone to physical damage such as tearing and breakage during assembly and use. Because an excessively thin flexible circuit board 3 may not provide sufficient current carrying capacity, especially in high-power applications, it can easily cause overheating or even burnout, as well as problems such as the flexible circuit board 3 rebounding and warping. Therefore, the display module of this embodiment further improves the stability and service life of the display module.

[0080] Optionally, the thickness of the flexible circuit board 3 is 0.049 mm, 0.050 mm, 0.051 mm, 0.052 mm, 0.053 mm, 0.054 mm, 0.055 mm, 0.056 mm, 0.057 mm, 0.058 mm and 0.059 mm.

[0081] In some embodiments, it is necessary to simultaneously control the length of the binding segment 31 to be 0.41mm-0.65mm; the length of the bending segment 32 to be 1.2mm-2mm; the length of the fixing segment 33 to be 4mm-8mm; and the thickness of the flexible circuit board 3 to be 0.049mm-0.059mm. When the flexible circuit board 3 of the display module in this embodiment of the present invention meets these ranges, the display module of this embodiment of the present invention has the advantages of miniaturization and convenient installation.

[0082] like Figure 1 As shown, the mating hole is located on the area of ​​the bent section 32 near the fixed section 33.

[0083] The display module of this embodiment, by having mating holes located on the bending section 32 near the fixing section 33, ensures precise alignment of the flexible circuit board 3 at critical positions. Since cracking typically occurs from the bending section towards the fixing section 33, the mating holes on the bending section 32 near the fixing section 33 provide a fixing effect, preventing cracking of the fixing section 33. This significantly improves assembly accuracy, mechanical stability, and reliability. Furthermore, the design of the mating holes and the limiting protrusion 22 not only improves assembly accuracy but also enhances the stability and reliability of the touch panel. Therefore, the display module of this embodiment further enhances the assembly accuracy of the display module and significantly improves the assembly precision.

[0084] like Figure 1 As shown, there is a gap between the edge of the display panel 1 and the bent section 32.

[0085] The display module of this embodiment, through the gap between the edge of the display panel 1 and the bent section 32, addresses the issue that when the bent section 32 is tightly attached to the edge of the display panel 1, the bending point tends to concentrate in a certain area, easily forming a stress concentration point. By setting a gap, the bending points can be distributed more evenly, thereby dispersing mechanical stress and reducing the risk of localized stress concentration. This dispersed stress distribution helps reduce material fatigue damage and extends the overall service life of the flexible circuit board 3 and the display panel 1. Furthermore, maintaining a certain gap provides more operating space during assembly, facilitating precise alignment and adjustment, especially on automated production lines. Therefore, the display module of this embodiment further improves the assembly efficiency and accuracy of the display module.

[0086] Meanwhile, the gap allows air to flow between the display panel 1 and the bent section 32, which helps with heat dissipation. Especially in high-power applications, good airflow can effectively reduce temperature and prevent overheating that could cause the flexible circuit board 3 to peel off and warp. Furthermore, since the bent section 32 may rub against the edge of the display panel 1 during use, causing wear or scratches, the gap design effectively prevents wear or scratches on the flexible circuit board 3. Therefore, the display module of this embodiment improves assembly efficiency and precision, as well as extends its service life.

[0087] like Figure 1 As shown, the mating hole is located on the area of ​​the bent section 32 near the fixed section 33, and there is a gap between the edge of the display panel 1 and the bent section 32. The display module of this embodiment further improves the stability and reliability of the touch panel and can also significantly improve the assembly accuracy.

[0088] like Figure 1As shown, the display module of this utility model embodiment also includes an anti-detachment component, one end of the limiting protrusion 22 extends out of the mating hole, and the anti-detachment component 5 stops at the end of the limiting protrusion 22 that extends out of the mating hole.

[0089] The display module of this embodiment uses an anti-detachment component, which stops the anti-detachment component 5 at the end of the limiting protrusion 22 extending from the mating hole. This anti-detachment component prevents the bent section 32 from protruding from the limiting protrusion 22, effectively preventing the flexible circuit board 3 from moving or shifting during use under frequent bending or vibration environments. Therefore, it further increases the rigidity and stability of the overall structure and reduces the risk of deformation or damage caused by external stress.

[0090] Furthermore, the height of the limiting protrusion 22 protruding from the flexible circuit board 3 is 0.06mm-0.15mm.

[0091] The display module of this utility model embodiment controls the height of the limiting protrusion 22 protruding from the flexible circuit board 3 to be 0.06mm-0.15mm. This avoids the limiting protrusion 22 protruding from the flexible circuit board 3 too high, which would affect the display module and increase the overall thickness of the device. This would not be conducive to achieving an ultra-thin design. In some applications with extremely high space requirements, such as micro sensors or medical devices, an excessively thick flexible circuit board 3 may restrict the layout and installation of other components.

[0092] Optionally, the height of the limiting protrusion 22 protruding from the flexible circuit board 3 is 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.10mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm and 0.15mm.

[0093] The thickness of the raised body 21 is 0.25mm-0.3mm.

[0094] The display module of this utility model embodiment, by limiting the thickness range of the raised body 21, avoids the problem that an excessively thick raised body 21 would significantly increase the overall thickness of the device, and that an excessively thick raised plate would occupy more internal space, restricting the layout and installation of other components.

[0095] On the other hand, this avoids the problem of the shim body 21 being too thin, which could easily lead to physical damage such as tearing or breakage during assembly and use. A thinner shim plate may not be able to withstand large external forces or vibrations, which could easily lead to connection failure or malfunction.

[0096] like Figure 1 and Figure 2 As shown, the anti-detachment component 5 has a groove, and one end of the limiting protrusion 22 is located in the groove.

[0097] The display module of this embodiment improves the stability of the connection between the anti-detachment component 5 and the limiting protrusion 22 by providing a groove on the anti-detachment component 5 and placing one end of the limiting protrusion 22 within the groove.

[0098] Optionally, the anti-detachment component 5 can be connected to the limiting protrusion 22 by adhesive or threaded connection. The anti-detachment component 5 is made of foam adhesive or flexible silicone.

[0099] Furthermore, the anti-detachment component 5 comes into contact with the flexible circuit board 3. This isolates the flexible circuit board 3 between the raised block 2 and the grooved foam adhesive / silicone, etc. Through the action of adhesion and compression, the flexible circuit board 3 is stabilized within a certain space, preventing it from warping.

[0100] Specifically, the limiting protrusion 22 of the shim block 2 passes through the flexible circuit board 3 and is fixed with groove adhesive, so that the shim block 2 and the limiting protrusion 22 form a whole, increasing the total contact area of ​​the adhesive surface, and fixing the flexible circuit board 3 between the shim blocks 2.

[0101] Optionally, the overlap area between the anti-detachment component 5 and the flexible circuit board 3 is ≥1mm. 2 .

[0102] The display module of this utility model can improve the connection stability between the anti-detachment member 5 and the limiting protrusion 22 by limiting the overlap area between the anti-detachment member 5 and the flexible circuit board 3, and can also limit the flexible circuit board 3 by the anti-detachment member 5.

[0103] Optionally, the groove and surrounding area of ​​the anti-detachment component can also be bonded using adhesive. This further improves the stability of the connection between the anti-detachment component 5 and the limiting protrusion 22.

[0104] The height of the limiting protrusion 22 is equal to the thickness of the flexible circuit board 3 plus H, where H is 0.1mm-0.5mm.

[0105] The display module of this embodiment avoids the problem of excessive protrusion of the limiting protrusion 22 from the flexible circuit board 3 by making its height equal to the thickness of the flexible circuit board 3 plus H. This prevents the overall thickness of the display module from being increased, which would hinder ultra-thin design. In some applications with extremely high space requirements, such as micro-sensors or medical devices, an excessively long protrusion of the limiting protrusion 22 from the flexible circuit board 3 could also restrict the layout and installation of other components. Therefore, the reasonable setting of the height of the limiting protrusion 22 in the display module of this embodiment is beneficial to achieving the advantage of device miniaturization.

[0106] like Figure 3 and Figure 5As shown, the raised body 21 includes a main body 211, a constricted part 212 and a limiting part 213 connected in sequence. The limiting part is provided with a limiting groove 214, and the driving circuit 4 is disposed in the limiting groove 214.

[0107] The display module of this embodiment of the utility model divides the raised body 21 into a main body part 211, a constricted part 212, and a limiting part 213 that are connected in sequence, and places the driving circuit 4 inside the limiting part 214. As a result, this structure improves the stability of the installation of the driving circuit 4.

[0108] like Figure 1 , Figure 3 and Figure 4 The diagram shown is a structural schematic of a display panel 1, a chip-on-film (COF) film, and a flexible circuit board according to an embodiment of this application. The COF film can be aligned linearly with the display panel 1 during bonding and can be bent after bonding. After completion, as shown... Figure 4 After the flipping and bonding shown, adhesive can be used to evenly adhere the flip-chip film to the display panel 1.

[0109] The display device of this utility model embodiment includes the display module of any of the above. For example, the display device in the embodiments of this application can be any product or component with display function, such as electronic paper, mobile phone, tablet computer, television, laptop computer, digital photo frame, navigator, mobile terminal, computer monitor, wearable device or information query machine.

[0110] This application provides a display device, including the display module as described in any embodiment of this application. The technical principles and effects are similar, and will not be repeated here. The display device provided according to any embodiment of this application and the display module provided in the embodiments of this application belong to the same inventive concept, and have corresponding structures and beneficial effects. Details not described in detail in the embodiments of the display device can be found in the embodiments section of the display module, and will not be repeated here.

[0111] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications or equivalent substitutions made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0112] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0113] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0114] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0115] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0116] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0117] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A display module, characterized in that, A display panel having a light-emitting side and a backlight side disposed opposite to each other along its thickness direction, the light-emitting side including a display area and a non-display area extending outward from the outer periphery of the display area; A shim block, the shim block having a first side and a second side disposed opposite to each other along the thickness direction of the display panel, the first side of the shim block being connected to the backlight side; and A flexible circuit board, one end of which is connected to the non-display area on the light-emitting side of the display panel, and the other end of which is bent and extended toward the backlight side of the display panel, and the other end of which is connected to the second side of the shim block. One of the flexible circuit board and the shim block is provided with a locking part, and the other of the flexible circuit board and the shim block is provided with a mating part, and the locking part and the mating part are engaged. A driving circuit is connected between the display panel and the flexible circuit board.

2. The display module according to claim 1, characterized in that, The shim includes a shim body and a limiting protrusion. The shim body is stacked on the backlight side of the display panel. The limiting protrusion extends from one side of the thickness direction of the shim body toward a direction away from the display panel to protrude from the shim body to form the locking part. The flexible circuit board has a mating hole, and the limiting protrusion passes through the mating hole. And / or, both the locking part and the engaging part are multiple, and the multiple locking parts and the multiple engaging parts are engaged one-to-one.

3. The display module according to claim 2, characterized in that, The flexible circuit board includes a bonding section, a bending section and a fixing section connected in sequence. The bonding section is connected to the light-emitting side of the display panel, the fixing section is connected to the second side of the raised body, and the bending section and / or the fixing section are provided with the mating hole.

4. The display module according to claim 3, characterized in that, The length of the binding segment is 0.41mm-0.65mm; And / or, the length of the bent section is 1.2mm-2mm; And / or, the length of the fixed segment is 4mm-8mm; And / or, the thickness of the flexible circuit board is 0.049mm-0.059mm.

5. The display module according to claim 3, characterized in that, The mating hole is located on the area of ​​the bent section near the fixed section; And / or, there is a gap between the edge of the display panel and the bent section.

6. The display module according to claim 3, characterized in that, It also includes an anti-detachment component, one end of the limiting protrusion extending out of the mating hole, and the anti-detachment component stopping at the end of the limiting protrusion extending out of the mating hole.

7. The display module according to claim 6, characterized in that, The anti-detachment component is provided with a groove, and one end of the limiting protrusion is disposed in the groove; And / or, the height of the limiting protrusion protruding from the flexible circuit board is 0.06mm-0.15mm; And / or, the anti-detachment component is foam adhesive or flexible silicone; And / or, the anti-detachment component is in contact with the flexible circuit board, and the overlap area between the anti-detachment component and the flexible circuit board is ≥1mm. 2 ; And / or, the plurality of said mating holes are spaced apart along the width direction of the display panel; And / or, the diameter of the mating hole is 0.5mm-1.0mm.

8. The display module according to claim 2, characterized in that, The thickness of the raised body is 0.25mm-0.3mm; And / or, the cross-section of the limiting protrusion is one of a circle, a square, a plum blossom shape, a pentagon, or a hexagon, and the cross-sectional area of ​​the mating hole is adapted to the shape and size of the cross-section of the limiting protrusion; And / or, the height of the limiting protrusion is equal to the thickness of the flexible circuit board + H, where H is 0.1mm-0.5mm.

9. The display module according to claim 2, characterized in that, The raised body includes a main body, a constricted part, and a limiting part connected in sequence. The limiting part is provided with a limiting groove, and the driving circuit is disposed in the limiting groove.

10. A display device, characterized in that, Includes the display module as described in any one of claims 1-9.

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