Display device

Abstract

This application discloses a display device including a display panel, a printed circuit board (PCB), and a flexible circuit board. The PCB is electrically connected to the display panel via the flexible circuit board. A gold finger is provided at the end of the PCB away from the display panel. One end of the flexible circuit board is bound to the display panel, and the other end is bound to the gold finger. The display device further includes a pressing device disposed between the gold finger and the end of the PCB near the display panel, and located on the side of the flexible circuit board away from the PCB. This application, through the above method, provides a pressing device at the connection point between the PCB and the flexible circuit board. The pressing device is used to press the flexible circuit board, preventing it from bulging and avoiding abnormal noises when pressing the display device.

Description

Technical Field

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

[0002] With the rapid development of display technology, people's demand for display products is also increasing. In display devices, the connection between the printed circuit board and the display panel is usually achieved through a flexible circuit board. Since the production of the flexible circuit board requires a certain length, the flexible circuit board is usually bound to the bottom of the printed circuit board. After binding, the flexible circuit board may bulge or make noise when pressed due to stress and other factors, which will affect the user's experience.

[0003] Therefore, how to prevent the flexible circuit board from bulging and causing abnormal noise when pressing the display device has become an urgent problem to be solved. Summary of the Invention

[0004] The purpose of this application is to provide a display device with a pressing device to prevent the flexible circuit board from bulging and to avoid abnormal noise when pressing the display device.

[0005] This application discloses a display device, including a display panel, a printed circuit board, and a flexible circuit board. The printed circuit board is electrically connected to the display panel through the flexible circuit board. A gold finger is provided at one end of the printed circuit board away from the display panel. One end of the flexible circuit board is bound to the display panel, and the other end is bound to the gold finger. The display device also includes a pressing device, which is disposed between the gold finger and the end of the printed circuit board near the display panel, and is located on the side of the flexible circuit board away from the printed circuit board.

[0006] Optionally, the pressing device includes a pressure plate and a buckle. The pressure plate is elongated, and the buckle is disposed in the middle of the pressure plate. The flexible circuit board has an opening, and the printed circuit board has a slot corresponding to the opening. The buckle is fixed in the opening and the slot.

[0007] Optionally, the length of the pressure plate is greater than or equal to the width of the flexible circuit board, and the width of the pressure plate is less than or equal to the distance between the gold fingers and the end of the printed circuit board closest to the display panel.

[0008] Optionally, the pressing device includes a pressure plate and buckles. The pressure plate is elongated, and there are two buckles located at both ends of the pressure plate. The distance between the two buckles is greater than the width of the flexible circuit board. The printed circuit board has slots at both ends along the width direction of the flexible circuit board, and the two buckles are respectively fixed in the slots.

[0009] Optionally, the pressing device includes a button, a buckle, a retractable pressure plate, a hydraulic structure, and a hydraulic rod, a crank, and a motor disposed within the hydraulic structure. The button is disposed on the side of the hydraulic structure away from the flexible circuit board, and the buckle is disposed on the side of the hydraulic structure close to the flexible circuit board. The hydraulic rod passes through the hydraulic structure, and the retractable pressure plate is disposed at both ends of the hydraulic rod. One end of the crank is connected to the middle of the hydraulic rod, and the other end is electrically connected to the motor. The button is electrically connected to the motor. An opening is provided on the flexible circuit board, and a latch is provided on the printed circuit board corresponding to the opening. The buckle is fixed within the opening and the latch.

[0010] Optionally, the retractable pressure plate includes a first end near the flexible circuit board and a second end away from the flexible circuit board. The first end is flush with the side of the hydraulic structure near the flexible circuit board. In a direction parallel to the length of the flexible circuit board, extending from the outside of the hydraulic structure towards the motor side, the height of the second end from the end of the hydraulic structure away from the button gradually increases. The retractable pressure plate has multiple foldable creases and extends and retracts in a folded manner along the foldable creases.

[0011] Optionally, the pressing device further includes a baffle plate disposed within the hydraulic structure, corresponding to the retractable pressure plate, wherein the height of the baffle plate from the end of the hydraulic structure away from the button is less than the maximum height of the second end from the end of the hydraulic structure away from the button, and greater than the minimum height of the second end from the end of the hydraulic structure away from the button.

[0012] Optionally, the display device further includes an elastic element disposed between the pressing device and the flexible circuit board.

[0013] Optionally, the pressure plate is made of ABS resin material or stainless steel metal material, etc.

[0014] Optionally, all or part of the pressing device is made of aluminum.

[0015] Compared to solutions where flexible circuit boards are bonded to the bottom of printed circuit boards (PCBs), which can cause the flexible circuit boards to bulge due to stress and other factors, this application incorporates a pressing device at the connection point between the PCB and the flexible circuit board. The pressing device is located on the side of the flexible circuit board furthest from the PCB. During normal assembly of the display device, the pressing device presses against the surface of the flexible circuit board, holding it in place to prevent it from warping or bulging, thus avoiding any abnormal noises when pressing the display device. Simultaneously, the pressing device's tight grip on the flexible circuit board also enhances the fixation between the PCB and the flexible circuit board, preventing the connection point from detaching and causing electrical connection failure, which would negatively impact the user experience. Attached Figure Description

[0016] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0017] Figure 1 This is a top view of the display device according to Embodiment 1 of this application;

[0018] Figure 2 This is an exploded schematic diagram of the display device according to Embodiment 1 of this application;

[0019] Figure 3 This is an exploded view of the display device according to Embodiment 2 of this application;

[0020] Figure 4 This is a first-state cross-sectional schematic diagram of the display device according to Embodiment 3 of this application;

[0021] Figure 5 This is a schematic cross-sectional view of the display device in the second state according to Embodiment 3 of this application;

[0022] Figure 6 This is an exploded view of the display device according to Embodiment 4 of this application.

[0023] Among them, 10 is a display device; 20 is a display panel; 30 is a printed circuit board; 310 is a bayonet; 40 is a flexible circuit board; 410 is an opening; 50 is a pressing device; 510 is a pressure plate; 511 / 590 are buckles; 520 is a telescopic pressure plate; 521 is a first end; 522 is a second end; 523 is a foldable crease; 530 is a button; 540 is a motor; 550 is a crank; 560 is a hydraulic rod; 570 is a hydraulic structure; 580 is a baffle; and 60 is an elastic element. Detailed Implementation

[0024] It should be understood that the terminology, specific structural and functional details used herein are merely for describing particular embodiments and are representative. However, this application may be implemented in many alternative forms and should not be construed as being limited to the embodiments set forth herein.

[0025] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of technical features indicated. Therefore, unless otherwise stated, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0026] In addition, terms such as “center,” “horizontal,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” that indicate orientation or positional relationship are based on the orientation or relative positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this application and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0027] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] The present application will now be described in detail with reference to the accompanying drawings and optional embodiments.

[0029] Example 1:

[0030] Figure 1 This is a top view of the display device according to Embodiment 1 of this application. Figure 2 This is an exploded view of the display device according to Embodiment 1 of this application, see reference. Figure 1 and Figure 2As can be seen, as the first embodiment of this application, a display device 10 is disclosed, including a display panel 20, a printed circuit board 30 and a flexible circuit board 40. The printed circuit board 30 and the display panel 20 are electrically connected through the flexible circuit board 40. A gold finger is provided at one end of the printed circuit board 30 away from the display panel 20. One end of the flexible circuit board 40 is bound to the display panel 20 and the other end is bound to the gold finger. The display device 10 also includes a pressing device 50, which is disposed between the gold finger and the end of the printed circuit board 30 near the display panel 20, and is located on the side of the flexible circuit board 40 away from the printed circuit board 30.

[0031] Compared to solutions where the flexible circuit board 40 is bonded to the bottom of the printed circuit board 30, which can cause the flexible circuit board 40 to bulge due to stress and other factors, this application provides a pressing device 50 at the connection point between the printed circuit board 30 and the flexible circuit board 40. The pressing device 50 is located on the side of the flexible circuit board 40 away from the printed circuit board 30. When the display device 10 is normally assembled, the pressing device 50 presses against the surface of the flexible circuit board 40 to hold it in place, preventing it from warping or bulging and avoiding any abnormal noise when the display device 10 is pressed. Simultaneously, the pressing device 50's pressure on the flexible circuit board 40 also strengthens the fixation between the printed circuit board 30 and the flexible circuit board 40, preventing the connection point from detaching and causing electrical connection failure, thus affecting the user experience.

[0032] In this application, the printed circuit board 30 and the display panel 20 are located in the same plane (the printed circuit board 30 is not bent and is located on the side of the display panel 20 away from the light-emitting surface). Since the display panel 20 and the printed circuit board 30 are bonded together by the flexible circuit board 40, there is a certain distance between the display panel 20 and the printed circuit board 30. With the design of the narrow bezel area of ​​the display device 10, the gold fingers on the printed circuit board 30 used for bonding are located at the end away from the display panel 20. One end of the flexible circuit board 40 is bonded to the display panel 20, and the other end is bonded to the gold fingers. In this way, the end of the flexible circuit board 40 and the printed circuit board 30 near the display panel 20 will be suspended. Usually, this part of the flexible circuit board 40 and the printed circuit board 30 are connected together by adhesive. At this time, the pressing device 50 can also improve the connection effect between the flexible circuit board 40 and the printed circuit board 30 by pressing the flexible circuit board 40.

[0033] Specifically, the pressing device 50 includes a pressure plate 510 and a buckle 511. The pressure plate 510 is elongated, and the buckle 511 is located in the middle of the pressure plate 510. The flexible circuit board 40 has an opening 410, and the printed circuit board 30 has a slot 310 corresponding to the opening 410. The buckle 511 is fixed in the opening 410 and the slot 310.

[0034] In this embodiment, the pressing device 50 consists of a pressure plate 510 and a buckle 511. The pressure plate 510 is elongated, and the buckle 511 is located in the middle of the pressure plate 510. At the same time, an opening 410 is provided in the middle of the flexible circuit board 40 along the width direction. A slot 310 is provided in the printed circuit board 30 at the position corresponding to the slot 310. The opening 410 and the buckle 511 have the same size. The end of the buckle 511 away from the pressure plate 510 is set as a V-shaped clip. The width of the V-shaped opening 410 of the clip is greater than the width of the opening 410 and the buckle 511. The clip will shrink when subjected to force. When the buckle 511 is pressed and fixed in the opening 410 and the slot 310 by the clip, the pressure plate 510 presses the upper surface of the flexible circuit board 40 to prevent the flexible circuit board 40 from bulging.

[0035] To ensure the clamping effect of the flexible circuit board 40, the length of the pressure plate 510 is greater than or equal to the width of the flexible circuit board 40, and the width of the pressure plate 510 is less than or equal to the distance between the gold fingers and the end of the printed circuit board 30 near the display panel 20. The width of the flexible circuit board 40 refers to its length parallel to the side edge of the display panel 20 near the printed circuit board 30. The length of the flexible circuit board 40 refers to its length extending from the display panel 20 towards the printed circuit board 30. The length of the pressure plate 510 is set to be greater than or equal to the width of the flexible circuit board 40, and the width of the pressure plate 510 is set to be less than or equal to the distance between the gold fingers and the end of the printed circuit board 30 near the display panel 20. The distance between the gold fingers and the end of the printed circuit board 30 near the display panel 20 refers to the distance between the end of the gold fingers near the display panel 20 and the end of the printed circuit board 30 near the display panel 20. Setting the width of the pressure plate 510 to be less than or equal to this distance can ensure the pressing effect of the flexible circuit board 40 while also ensuring that the pressure plate 510 does not press on the gold fingers, thus avoiding electrical performance failure caused by the pressure plate 510 pressing on the gold fingers.

[0036] Optionally in this embodiment, the length of the pressure plate 510 is set to be greater than the width of the flexible circuit board 40, and the width of the pressure plate 510 is set to be less than the distance between the gold fingers and the end of the printed circuit board 30 near the display panel 20. In this way, the pressure plate 510 can ensure the maximum contact area between the pressure plate 510 and the flexible circuit board 40 without pressing the gold fingers, and can also ensure that the edges of the flexible circuit board 40 in the width direction are pressed, so that there will be no problem of falling off caused by edge lifting, thus ensuring the anti-bulging effect of the flexible circuit board 40.

[0037] The pressure plate 510 is made of ABS resin or stainless steel. ABS resin, or acrylonitrile-butadiene-styrene copolymer, is a high-strength, tough, and easily processed thermoplastic polymer. ABS also has good electrical insulation properties and is virtually unaffected by temperature, humidity, and frequency. Furthermore, it exhibits excellent wear resistance and dimensional stability, making it well-suited for securing the flexible circuit board 40. Alternatively, the pressure plate 510 can be made of stainless steel (SUS). SUS is strong and will not corrode due to moisture generated by temperature changes in the printed circuit board 30 during operation of the display device 10. It also has a long service life and provides excellent fixation for the flexible circuit board 40.

[0038] Example 2:

[0039] Figure 3 This is an exploded view of the display device according to Embodiment 2 of this application, see reference. Figure 3 As can be seen, as the second embodiment of this application, unlike the first embodiment, the pressing device 50 includes a pressure plate 510 and a buckle 511. The pressure plate 510 is elongated, and there are two buckles 511. The two buckles 511 are located at both ends of the pressure plate 510, and the distance between the two buckles 511 is greater than the width of the flexible circuit board 40. The printed circuit board 30 has slots 310 at both ends along the width direction of the flexible circuit board 40, and the two buckles 511 are respectively fixed in the slots 310.

[0040] In this embodiment, the length of the pressure plate 510 is set to be greater than the width of the flexible circuit board 40. Two buckles 511 are provided, respectively located at both ends of the pressure plate 510, and the distance between the two buckles 511 is greater than the width of the flexible circuit board 40. This allows the pressure plate 510 to cover both ends of the flexible circuit board 40 and protrude, completely pressing down on the flexible circuit board 40. At this time, it is only necessary to provide a slot 310 at each end of the printed circuit board 30 along the width direction of the flexible circuit board 40. The buckles 511 can be fixed in the slot 310 to fix the pressure plate 510. In this way, there is no need to make an opening design on the flexible circuit board 40, simplifying the manufacturing process of the display device 10 and saving costs.

[0041] Example 3:

[0042] Figure 4 This is a first-state cross-sectional schematic diagram of the display device according to Embodiment 3 of this application. Figure 5 This is a schematic cross-sectional view of the display device in the second state according to Embodiment 3 of this application, see reference. Figure 4 and Figure 5As can be seen, as the third embodiment of this application, unlike the first embodiment, the pressing device 50 includes a button 530, a buckle 590, a retractable pressure plate 520, a hydraulic structure 570, and a hydraulic rod 560, a crank 550, and a motor 540 disposed within the hydraulic structure 570. The button 530 is disposed on the side of the hydraulic structure 570 away from the flexible circuit board 40, and the buckle 590 is disposed on the side of the hydraulic structure 570 close to the flexible circuit board 40. The hydraulic rod 560 is disposed through the hydraulic structure 570, and the retractable pressure plate 520 is disposed at both ends of the hydraulic rod 560. One end of the crank 550 is connected to the middle of the hydraulic rod 560, and the other end is electrically connected to the motor 540. The button 530 is electrically connected to the motor 540. An opening 410 is provided on the flexible circuit board 40, and a slot 310 is provided on the printed circuit board 30 corresponding to the opening 410. The buckle 590 is fixed within the opening 410 and the slot 310.

[0043] In this embodiment, the pressing device 50 consists of a button 530, a buckle 590, a retractable pressure plate 520, a hydraulic structure 570, and a hydraulic rod 560, a crank 550, and a motor 540 disposed within the hydraulic structure 570. The hydraulic structure 570 is a shell structure with an internal cavity. The length of the hydraulic structure 570 is set to be less than the width of the flexible circuit board 40, and the width of the hydraulic structure 570 is set to be less than the distance between the gold fingers and the end of the printed circuit board 30 near the display panel 20. The buckle 590 is disposed on the side of the hydraulic structure 570 near the flexible circuit board 40. An opening 410 is provided on the flexible circuit board 40, and a slot 310 is provided on the printed circuit board 30 corresponding to the opening 410. The buckle 590 is fixed in the opening 410 and the slot 310, so that the pressing device 50 is fixed on the side of the flexible circuit board 40 away from the printed circuit board 30.

[0044] Button 530 is installed on the side of hydraulic structure 570 away from flexible circuit board 40. Motor 540 is installed inside hydraulic structure 570 and electrically connected to button 530. The other end of motor 540 is electrically connected to crank 550. Crank 550 is connected to the middle of hydraulic rod 560. The hydraulic rod 560 of this application includes two sections. Two cranks 550 are also provided. The two cranks 550 are respectively connected to one section of hydraulic rod 560. Telescopic pressure plates 520 are respectively provided at both ends of hydraulic rod 560. When button 530 is activated, motor 540 drives crank 550 to rotate. Crank 550 then drives hydraulic rod 560 to rise and fall (here, the rise and fall of hydraulic rod 560 refers to the change in length of hydraulic rod 560 along the width direction of flexible circuit board 40). In turn, hydraulic rod 560 drives telescopic pressure plate 520 to extend, so that pressing device 50 can adapt to pressing and fixing flexible circuit board 40 of different lengths, preventing flexible circuit board 40 from bulging, and making it more versatile.

[0045] Specifically, the retractable pressure plate 520 includes a first end 521 near the flexible circuit board 40 and a second end 522 away from the flexible circuit board 40. The first end 521 is flush with the side of the hydraulic structure 570 near the flexible circuit board 40. In the direction parallel to the length of the flexible circuit board 40, extending from the outside of the hydraulic structure 570 toward the motor 540, the height of the second end 522 from the end of the hydraulic structure 570 away from the button 530 gradually increases. The retractable pressure plate 520 has multiple foldable creases 523 and retracts in a folded manner along the foldable creases 523.

[0046] The retractable pressure plate 520 is a hollow shell structure, including a first end 521 near the flexible circuit board 40 and a second end 522 away from the flexible circuit board 40. The first end 521 is flush with the side of the hydraulic structure 570 near the flexible circuit board 40, so that when the compressible pressure plate 520 is unfolded, it can press down on the upper surface of the flexible circuit board 40 to prevent the flexible circuit board 40 from bulging. The second end 522 is set as a slope, and the slope can be set as follows: Figure 5 As shown, in the direction parallel to the length of the flexible circuit board 40, extending from the outside of the hydraulic structure 570 towards the motor 540, the height of the second end 522 from the end of the hydraulic structure 570 away from the button 530 gradually increases. That is, the second end 522 rises in a sloping manner from the outside of the hydraulic structure 570 towards the side closer to the motor 540. This can be understood as the second end 522 gradually increasing in height in the vertical direction from the outside towards the inside of the hydraulic structure 570 in the horizontal direction. Furthermore, the retractable pressure plate 520 has multiple foldable creases 523 along the length of the flexible circuit board 40, and it extends and retracts in a folded manner along the foldable creases 523. The first end 521 and the second end 522 of the retractable pressure plate 520 are similar to a folding fan, and can be compressed under force, so that the length of the compressible pressure plate 520 is adjustable to adapt to flexible circuit boards 40 of different widths, making it more versatile.

[0047] After the retractable pressure plate 520 is folded along the foldable crease 523, it can be stored within the housing structure of the hydraulic structure 570. When the pressing device 50 is not mounted on the printed circuit board 30 and the flexible circuit board 40, its size can be reduced, making it more convenient for production and transportation. Furthermore, the second end 522 is configured to gradually increase in length along the flexible circuit board 40 towards the hydraulic structure 570, and the second end 522 is set as a slope. This reduces the weight of the pressing device 50 and saves on manufacturing materials, thus reducing costs.

[0048] In addition, the pressing device 50 also includes a baffle 580, which is disposed inside the hydraulic structure 570 and corresponds to the retractable pressure plate 520. The height of the baffle 580 from the end of the hydraulic structure 570 away from the button 530 is less than the maximum height of the second end 522 from the end of the hydraulic structure 570 away from the button 530, and greater than the minimum height of the second end 522 from the end of the hydraulic structure 570 away from the button 530. To prevent the compressible pressure plate 510 from being too long when pressing the flexible circuit board 40, and to ensure the hydraulic rod 560 can extend freely under the drive of the crank 550, the pressing device 50 also includes a baffle 580. The baffle 580 is located within the hydraulic structure 570 and corresponds to the position of the retractable pressure plate 520. Specifically, it is positioned at the top of the second end 522 of the retractable pressure plate 520, which is an inclined surface. Furthermore, in the vertical direction, the height of the baffle 580 from the end of the hydraulic structure 570 away from the button 530 is less than the height of the second end 522 from the end of the hydraulic structure 570 away from the button 530. The maximum height of the second end 522 is greater than the minimum height of the end of the hydraulic structure 570 away from the button 530, so that the baffle 580 can block the highest position of the telescopic pressure plate 520, limiting the maximum length that the telescopic pressure plate 520 can extend in the horizontal direction, that is, limiting the maximum width that the flexible circuit board 40 can be used for. At the same time, the outer surface of the baffle 580 is flush with the outer surface of the telescopic pressure plate 520 at its shortest length. This allows the telescopic pressure plate 520 to be completely fixed inside the hydraulic structure 570 when it is not extended, ensuring that the outer surface of the pressing device 50 is flush and the structure is more compact.

[0049] Taking the rightmost retractable pressure plate 520 as an example, the process of fixing the flexible circuit board 40 by the pressing device 50 involves the hydraulic rod 560 connecting only to the rightmost end of the retractable pressure plate 520, while the leftmost end of the retractable pressure plate 520 remains fixed. Then, the hydraulic rod 520 extends to the right under the swing of the crank 550, causing the retractable pressure plate 520 to move to the right. Because the second end 522 has this sloping structure, after the hydraulic rod 520 extends to a certain extent, the relatively higher position of the leftmost end of the second end 522 is blocked by the baffle 580. Finally, when the hydraulic rod 520 stops, it causes the rightmost end connected to the retractable pressure plate 520 to stop at a certain position, together with the relatively higher position of the leftmost end of the second end 522, so that the rightmost retractable pressure plate 520 extends to a certain extent. Correspondingly, the leftmost retractable pressure plate 520 also extends to the left to a certain extent, so that the total length of the leftmost and rightmost ends of the retractable pressure plates 520 after they are extended can achieve the pressing of a flexible circuit board 40 of a certain width.

[0050] Furthermore, the pressing device 50 may be made wholly or partially of aluminum. Aluminum has excellent heat dissipation properties; when the printed circuit board 30 and flexible circuit board 40 are operating under high load, the heat generated can be dissipated through the pressing device 50, preventing damage to the printed circuit board 30 and flexible circuit board 40 due to overheating. For example, the hydraulic structure 570 in the pressing device 50 may be made of aluminum. Since the hydraulic structure 570 directly presses against the surface of the flexible circuit board 40, the heat generated by the flexible circuit board 40 can be conducted to the hydraulic structure 570 for heat dissipation, thus improving the service life of the printed circuit board 30 and flexible circuit board 40.

[0051] Example 4:

[0052] Figure 6 This is an exploded view of the display device according to Embodiment 4 of this application, see reference. Figure 6 As can be seen, as the fourth embodiment of this application, this embodiment is an improvement on the first embodiment. The display device 10 also includes an elastic member 60, which is disposed between the pressing device 50 and the flexible circuit board 40.

[0053] In this embodiment, the display device 10 is further provided with an elastic element 60. The elastic element 60 is disposed between the pressing device 50 and the flexible circuit board 40, so that the elastic element 60 directly contacts the surface of the flexible circuit board 40. Since the flexible circuit board 40 is flexible and soft, the pressing device 50 presses the flexible circuit board 40 through the contact between the elastic element 60 and the surface of the flexible circuit board 40, preventing bulging and avoiding wear on the surface of the flexible circuit board 40. At the same time, the elastic element 60 has a certain insulating effect, which can also ensure the electrical performance of the flexible circuit board 40 and prevent some external static electricity from affecting the electrical performance of the display panel 20, thus ensuring the display effect of the display device 10.

[0054] It should be noted that the inventive concept of this application can form many embodiments, but due to the limited space of the application documents, they cannot all be listed. Therefore, without conflict, the embodiments described above or the technical features can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effect will be enhanced.

[0055] The technical solution of this application can be widely used in various display panels, such as TN (Twisted Nematic) display panels, IPS (In-Plane Switching) display panels, VA (Vertical Alignment) display panels, and MVA (Multi-Domain Vertical Alignment) display panels. Of course, it can also be used in other types of display panels, such as OLED (Organic Light-Emitting Diode) display panels, all of which are applicable to the above solution.

[0056] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.

Claims

1. A display device comprising a display panel, a printed circuit board and a flexible circuit board, the printed circuit board being electrically connected to the display panel through the flexible circuit board, characterized in that, one end of the printed circuit board away from the display panel is provided with a golden finger, one end of the flexible circuit board is bound to the display panel, and the other end is bound to the golden finger; the display device further comprises a pressing device, the pressing device is arranged between the golden finger and the end of the printed circuit board close to the display panel, and is located on the side of the flexible circuit board away from the printed circuit board; the pressing device comprises a button, a buckle, a telescopic pressing plate, a hydraulic structure, a hydraulic rod, a crank and a motor arranged in the hydraulic structure, the button is arranged on the side of the hydraulic structure away from the flexible circuit board, and the buckle is arranged on the side of the hydraulic structure close to the flexible circuit board; the hydraulic rod is arranged in the hydraulic structure, and the telescopic pressing plate is arranged at both ends of the hydraulic rod; one end of the crank is connected to the middle of the hydraulic rod, and the other end is electrically connected to the motor; the button is electrically connected to the motor; an opening is arranged on the flexible circuit board, and the printed circuit board is provided with a clamping hole corresponding to the position of the opening, and the buckle is fixed in the opening and the clamping hole; when the button is started, the motor drives the crank to rotate, the crank drives the hydraulic rod to rise and fall, and the hydraulic rod drives the telescopic pressing plate to extend, so that the pressing device is adapted to the pressing and fixing of the flexible circuit board with different lengths.

2. The display device according to claim 1, wherein The telescopic pressing plate comprises a first end close to the flexible circuit board and a second end away from the flexible circuit board, and the first end is flush with the side of the hydraulic structure close to the flexible circuit board; in the direction parallel to the length direction of the flexible circuit board, from the outside of the hydraulic structure to the side of the motor, the height of the second end away from the end of the hydraulic structure away from the button gradually increases, the telescopic pressing plate has a plurality of foldable creases, and is folded and telescopic along the foldable creases.

3. The display device according to claim 2, wherein The pressing device further comprises a baffle, the baffle is arranged in the hydraulic structure and corresponds to the telescopic pressing plate, and the height of the baffle away from the end of the hydraulic structure away from the button is less than the maximum height of the second end away from the end of the hydraulic structure away from the button, and greater than the minimum height of the second end away from the end of the hydraulic structure away from the button.

4. The display device according to claim 1, wherein The display device further comprises an elastic member, and the elastic member is arranged between the pressing device and the flexible circuit board.

5. The display device according to claim 1, wherein All or part of the pressing device is made of aluminum material.

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