Display device

Abstract

The embodiment of the utility model belongs to the display technology, and provides display equipment which comprises a display panel and a backlight module. And a display panel configured to display an image. The backlight module is located on the light incident side of the display panel and is configured to provide backlight. The backlight module comprises a flexible plate and an optical element, and the flexible plate is provided with a first connecting part. The optical element is electrically connected with the flexible plate, the optical element is provided with a second connecting part corresponding to the first connecting part, and the first connecting part and the second connecting part are electrically conducted. The problem of poor connection of the adapter plate and the light bar caused by thermal expansion and cold contraction can be solved.

Description

[0001] This application is a divisional application. The original application has the application number 202420064455.9 and the original application date is January 10, 2024. The original invention is entitled "Display Device". The entire contents of the original application are incorporated herein by reference. Technical Field

[0002] This application relates to display technology, and more particularly to a display device. Background Technology

[0003] Flat panel displays and televisions are currently the mainstream display devices, boasting advantages such as low power consumption, small size, and low radiation. Display devices consist of a display panel, which is a non-self-emissive panel and therefore requires a backlight module. The backlight module provides the necessary light for the display panel to display images.

[0004] In related technologies, backlight modules include LED strips and adapter boards. The adapter board connects to multiple LED strips via adapters. During operation, both the adapter board and the LED strips generate heat, which can cause the adapter board to expand and contract with temperature changes, leading to poor connections between the LED strips and the adapter board. To avoid this, the connector between the adapter board and the LED strips needs a large dimensional margin, but this often results in a large adapter board and high cost. Utility Model Content

[0005] This application provides a display device that can solve the problem of poor connection between the adapter board and the LED strip due to thermal expansion and contraction.

[0006] In a first aspect, embodiments of this application provide a display device, which includes:

[0007] The display panel is configured to display images;

[0008] A backlight module, located on the light-incident side of the display panel, is configured to provide backlight;

[0009] The backlight module includes:

[0010] The flexible board is provided with a first connecting part;

[0011] An optical element is electrically connected to the flexible plate. The optical element has a second connection portion corresponding to the first connection portion, and the first connection portion and the second connection portion are electrically connected.

[0012] The optical components are connected via a flexible board. A flexible board is a printed circuit supported by a flexible insulating substrate, offering excellent flexibility. When a flexible board deforms under stress, it can maintain its original shape after the force is removed. Therefore, flexible boards are less susceptible to thermal expansion and contraction, thus reducing the possibility of poor connection between the optical components and the flexible board.

[0013] In some embodiments of this application, the first connecting portion of the flexible plate is fixedly connected to the second connecting portion on the optical element.

[0014] This configuration, which fixes the flexible board and optical components together, improves the stability of their connection. Furthermore, the flexible board can have only a first pad, and the optical component only a second pad. The flexible board and optical component can be directly connected via the first and second pads, thus saving the cost of setting up terminal connectors.

[0015] In some embodiments of this application, the optical element includes a light bar and a terminal connector, and the flexible plate is electrically connected to the light bar through the terminal connector;

[0016] The terminal connector includes a support surface and a mounting portion. The support surface is configured to support the flexible plate. The second connecting portion and the mounting portion are both disposed on the support surface. The mounting portion and the support surface enclose a limiting space. One end of the flexible plate can pass through the limiting space, and the first connecting portion of the flexible plate is connected to the second connecting portion of the optical element.

[0017] This configuration allows the mounting section to constrain the flexible plate within the limiting space, reducing the possibility of large displacements caused by stress on the flexible plate, which could affect the connection stability between the flexible plate and the terminal connector. When the flexible plate is in the limiting space, the first connecting portion and the second connecting portion on the flexible plate can correspond to each other. When the first connecting portion and the second connecting portion are connected, the flexible plate and the light strip are electrically connected.

[0018] In some embodiments of this application, the backlight module further includes a pressure plate, which is correspondingly disposed with the terminal connector, and the flexible plate is pressed between the pressure plate and the terminal connector.

[0019] With this configuration, when the flexible plate is stretched by external forces, the inner wall of the pressure plate can adhere to the flexible plate, which can increase the friction between the pressure plate and the flexible plate. This friction can reduce the displacement of the flexible plate caused by the force, thus reducing the possibility of affecting the connection stability between the flexible plate and the terminal connector.

[0020] In some embodiments of this application, the pressure plate and the terminal connector are separate structures.

[0021] During the production and assembly of optical components, quality inspection of the terminal connectors is required to avoid affecting the yield rate of display devices. If the pressure plate and terminal connector are an integral structure, the pressure plate must be opened to expose the terminal connector for inspection during the inspection process. After the inspection is completed, the pressure plate must be closed, which easily leads to a cumbersome and complicated quality inspection process and is not conducive to automated operation. Therefore, in this embodiment, the pressure plate and terminal connector can be designed as separate structures to facilitate quality inspection of optical components. After the quality inspection is passed, a flexible plate can be installed, and the flexible plate is fixed between the pressure plate and the terminal connector by the pressure plate. The first connecting part and the second connecting part are electrically connected.

[0022] In some embodiments of this application, the pressure plate includes a flat plate and a reinforcing plate. Along the length direction of the flexible plate, the reinforcing plates are respectively provided at both ends of the flat plate. The flat plate and the reinforcing plates have an included angle to form an opening facing the terminal connector. A portion of the flexible plate and a portion of the terminal connector are located within the opening.

[0023] This configuration increases the contact area between the pressure plate and the flexible plate, which helps to increase the friction between the pressure plate and the flexible plate when the flexible plate is subjected to tensile force, thereby more effectively improving the stability of the flexible plate and the pressure plate.

[0024] In some embodiments of this application, the optical element includes a plurality of light strips, which are arranged side by side and spaced apart along the length direction of the flexible plate;

[0025] The mounting portion includes a first limiting portion, and the flexible plate is located between the first limiting portion and the supporting surface along the thickness direction of the display panel.

[0026] With this configuration, the first limiting part can prevent the flexible plate from detaching from the limiting space along the thickness direction of the display panel, thereby positioning the flexible plate in the thickness direction of the display panel.

[0027] In some embodiments of this application, the mounting portion further includes a second limiting portion. Along the length direction of the light strip, the two ends of the supporting surface are respectively provided with the second limiting portion. Along the thickness direction of the display panel, one end of the second limiting portion is connected to the supporting surface, and the other end is connected to the first limiting portion.

[0028] Wherein, along the length direction of the light strip, the distance between the second limiting portions is greater than or equal to the width of the flexible plate;

[0029] Along the length of the light strip, the distance between the opposite ends of the two first limiting portions is less than the width of the flexible plate.

[0030] With this configuration, the second limiting part can constrain the flexible plate from displacing along the length of the light strip. The distance between the second limiting parts along the length of the light strip can be greater than or equal to the width of the flexible plate. A limiting space can be formed between the opposing surfaces of the two second limiting parts and the supporting surface. The two second limiting parts can prevent the flexible plate from undergoing large displacements along the length of the light strip.

[0031] In some embodiments of this application, a third limiting portion is provided on one of the flexible plate and the terminal connector, and a fourth limiting portion is provided on the other of the flexible plate and the terminal connector, wherein the third limiting portion and the fourth limiting portion are connected in cooperation.

[0032] This configuration minimizes relative movement between the flexible plate and the terminal connector along both the length of the flexible plate and the length of the light strip, thus limiting the flexible plate's position on the support surface. Furthermore, the mating connection of the third and fourth limiting portions, together with the first limiting portion, can be configured to position the flexible plate within the limiting space, thereby improving the connection reliability between the first and second connecting portions.

[0033] Secondly, embodiments of this application provide a display device, including a display panel and a backlight module. The backlight module is disposed on the light-incident side of the display panel. The backlight module includes a flexible plate and an optical element. The flexible plate is provided with a first connecting portion, and the optical element is provided with a second connecting portion corresponding to the first connecting portion. The first connecting portion and the second connecting portion are electrically connected. Attached Figure Description

[0034] To more clearly illustrate the implementation methods in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0035] Figure 1 This is a cross-sectional structural diagram of a display device according to an embodiment of this application;

[0036] Figure 2 This is an exploded view of a display device according to an embodiment of this application;

[0037] Figure 3 This is a partial front view structural diagram of a display device according to an embodiment of this application;

[0038] Figure 4 This is a partially exploded structural diagram of a backlight module according to an embodiment of this application;

[0039] Figure 5This is a partial front view structural diagram of a backlight module according to an embodiment of this application;

[0040] Figure 6 for Figure 5 A schematic diagram of a partial cross-sectional view along the AA direction;

[0041] Figure 7 This is a partially exploded structural diagram of a backlight module according to an embodiment of this application;

[0042] Figure 8 for Figure 5 A schematic diagram of a partial cross-sectional view along the BB direction;

[0043] Figure 9 for Figure 8 A schematic diagram of the decomposed structure;

[0044] Figure 10 This is a schematic diagram of the structure of a terminal connector according to an embodiment of this application;

[0045] Figure 11 This is a schematic diagram of the structure of a terminal connector according to another embodiment of this application;

[0046] Figure 12 for Figure 3 Enlarged diagram of point C in the middle.

[0047] Explanation of reference numerals in the attached figures:

[0048] 10- Display devices;

[0049] 100-Backlight Module;

[0050] 110 - Flexible plate; 110a - First connecting part; 110b - Fourth limiting part;

[0051] 111 - First plate; 112 - Second plate;

[0052] 120 - Optical element; 120a - Second connecting part;

[0053] 121-Light bar;

[0054] 122-Terminal connector; 122a-Support surface; 122b-Third limiting part; 122c-Limiting space;

[0055] 1221-Mounting part; 1221a-Notch; 12211-First limiting part; 12212-Second limiting part;

[0056] 130 - Pressure plate; 130a - Opening; 131 - Flat plate; 132 - Reinforcing plate;

[0057] 140 - Backplate; 140a - First through hole; 140b - Second through hole;

[0058] 200 - Display panel;

[0059] 300-Power Supply;

[0060] 400-Motherboard. Detailed Implementation

[0061] To make the objectives, implementation methods and advantages of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments.

[0062] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0063] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a series of components is not necessarily limited to those that are explicitly listed, but may include other components that are not explicitly listed or that are inherent to such product or device.

[0064] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply 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.

[0065] The terms "first" and "second" are configured for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0066] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection 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.

[0067] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0068] Flat panel displays, televisions, and other display devices can be configured to display images. Taking a Liquid Crystal Display (LCD) device as an example, an LCD device mainly consists of a backlight module, a liquid crystal panel, and a driving circuit. The liquid crystal panel, as the display panel, does not emit light itself; it relies on the light source provided by the optical elements in the backlight module to achieve brightness display. The display principle of an LCD is to place liquid crystal between two conductive glass plates. Driven by the electric field between two electrodes, the liquid crystal molecules undergo a twisting nematic electric field effect, which controls the transmission or blocking function of the backlight optical elements, thereby displaying the image. Adding a color filter allows for the display of color images.

[0069] In related technologies, backlight modules include LED strips and adapter boards. Each LED strip can be connected to an external circuit via a separate connecting wire, which is simple. However, each LED strip is equipped with its own connecting wire, and the connecting wires cannot be shared, which can easily lead to problems such as a large number of overall circuits, high impedance, and high cost.

[0070] Therefore, the aforementioned technical problem can be solved by connecting each LED strip to an adapter board, which is then connected to an external circuit. However, the applicant discovered that the adapter board, being a rigid material, is prone to thermal expansion and contraction due to the heat generated during the operation of the display device, leading to poor connection between the LED strip and the adapter board. For example, when the adapter board expands due to heat, it may push against the connector on the LED strip in a direction away from the adapter board, causing the connector to detach from the adapter board. When the adapter board returns to normal temperature, it shrinks, which may cause the connector on the LED strip to separate from the adapter board. To avoid these phenomena, the connector between the adapter board and the LED strip needs to have a large dimensional margin, which may result in a large adapter board size and high cost.

[0071] Based on the aforementioned technical problems, the applicant has improved the structure of existing display devices. In this application, optical components can be connected via a flexible board. A flexible board is a flexible printed circuit board (FPC). A flexible board is a printed circuit supported by a flexible insulating substrate, possessing excellent flexibility. When a flexible board is deformed under force, it can maintain its deformed shape after the force is removed. Therefore, the flexible board is less susceptible to the effects of thermal expansion and contraction, thereby reducing the possibility of poor connection between the optical components and the flexible board.

[0072] The display device provided in this application will now be described with reference to the accompanying drawings and specific embodiments.

[0073] Figure 1 A cross-sectional structural diagram of a display device 10 provided in this application. Figure 2 This is an exploded view of a display device 10 provided in this application.

[0074] See Figure 1 and Figure 2 As shown, the display device 10 may include a display panel 200 and a backlight module 100. The display panel 200 may be configured for image display. The backlight module 100 may be located on the light-incident side of the display panel 200. The backlight module 100 may be configured to provide backlight to the display panel 200.

[0075] The backlight module 100 may include a flexible plate 110 and an optical element 120. The flexible plate 110 may have a first connecting portion 110a. The optical element 120 is electrically connected to the flexible plate 110. The optical element 120 may have a second connecting portion 120a corresponding to the first connecting portion 110a. The first connecting portion 110a and the second connecting portion 120a are electrically connected.

[0076] In this embodiment, the flexible plate 110 is connected to the optical element 120, so that the connection reliability between the flexible plate 110 and the optical element 120 is not easily affected by thermal expansion and contraction.

[0077] Specifically, when the heat generated during the operation of the display device 10 causes the flexible plate 110 to expand, the toughness of the flexible plate 110 can weaken the tensile force (expansion force) it experiences. This allows the first connecting portion 110a to move synchronously with the deformation of the flexible plate 110, and the force exerted by the flexible plate 110 on the optical element 120 can cause the second connecting portion 120a on the optical element 120 to move synchronously, thereby reducing the possibility of poor connection between the interface on the optical element 120 and the flexible plate 110. Similarly, when the display device 10 stops operating, the toughness of the flexible plate 110 can also resist the contraction force it experiences. The first connecting portion 110a can move synchronously with the deformation of the flexible plate 110, and the force exerted by the flexible plate 110 on the optical element 120 can cause the second connecting portion 120a on the optical element 120 to move synchronously, thereby reducing the possibility of poor connection between the interface on the optical element 120 and the flexible plate 110. Furthermore, it is easy to understand that when the display device 10 stops operating to allow the flexible plate 110 to cool down, the flexible plate 110 has good flexibility and is not prone to shrinkage, which would lead to poor contact between the flexible plate 110 and the optical element 120.

[0078] In some examples, the first connecting portion 110a and the second connecting portion 120a can be abutted to make the flexible plate 110 electrically connected to the optical element 120. Alternatively, the first connecting portion 110a and the second connecting portion 120a can also be electrically connected through a conductive component. Specifically, both the first connecting portion 110a and the second connecting portion 120a are electrically connected to a conductive component. The conductive component can achieve a stable connection between the first connecting portion 110a and the second connecting portion 120a.

[0079] Figure 3 A schematic diagram of the main view structure of a backlight module 100 when the user faces the light-emitting side of the display panel 200.

[0080] See in some examples Figure 2 and Figure 3 As shown, the backlight module 100 may also include a backplate 140. The backplate 140 may be configured to support components such as the optical element 120, and may also serve to dissipate heat from the optical element 120.

[0081] Optical element 120 can be disposed on back plate 140. Since back plate 140 has a supporting function, back plate 140 is prone to deformation. Therefore, when flexible plate 110 is fixed to back plate 140 in this embodiment, it is not easily affected by the deformation of back plate 140. This can reduce the phenomenon that deformation of one of the rigidly connected components affects the connection stability of the two components.

[0082] In some examples, the backlight module 100 is typically located at the bottom of the display device. The shape and size of the backlight module 100 can be adapted to the shape and size of the display device. For example, when configured for display devices or mobile terminals, the backlight module 100 typically has a rectangular shape.

[0083] For example, when the display panel 200 is set to a rectangle, see Figure 2 As shown in the diagram, the display panel 200 may include a top side, a ground side, a left side, and a right side. The top and ground sides of the display panel 200 are opposite each other, as are the left and right sides. The top side is connected to one end of the left side and one side of the right side, respectively, and the ground side is connected to the other end of the left side and the other end of the right side, respectively.

[0084] In some examples, the shape of the backplate 140 can also be set to a rectangle.

[0085] In some examples, the display panel 200 can be a transmissive display panel 200, which can modulate the transmittance of light but does not emit light itself. The display panel 200 can have multiple pixel units arranged in an array. Each pixel unit can independently control the transmittance and color of the light incident from the backlight module 100 onto that pixel unit, so that the light transmitted through all pixel units constitutes the displayed image.

[0086] In some feasible ways, the first connecting portion 110a of the flexible plate 110 can be fixedly connected to the second connecting portion 120a on the optical element 120.

[0087] Figure 4 This is an exploded view of the connection between the flexible plate 110 and the optical element 120 in one embodiment provided in this application. In this case, no additional connector is required to connect the flexible plate 110 and the optical element 120.

[0088] See in some examples Figure 4 As shown, the first connecting portion 110a of the flexible board 110 can be a first pad. The second connecting portion 120a on the optical element 120 can be a second pad. Along the thickness direction Z of the display panel 200, the first pad of the flexible board 110 and the second pad on the optical element 120 can be arranged opposite to each other, and the flexible board 110 and the optical element 120 can be fixedly connected and electrically connected by a welding process.

[0089] Understandably, the fixed connection between the flexible board 110 and the optical element 120 can improve the connection stability between the two. Furthermore, the flexible board 110 may only have a first pad, and the optical element 120 may only have a second pad. The flexible board 110 and the optical element 120 can be directly connected via the first and second pads, thus saving the cost of setting up the terminal connector 122.

[0090] Figure 5 A schematic diagram of the connection structure between the flexible plate 110 and the optical element 120 in a backlight module 100 provided in this application. Figure 6 for Figure 5 A schematic diagram of a partial cross-sectional view along the AA direction. Figure 7 To and Figure 6 A partial exploded view of the backlight module 100 from the same angle. Figure 8 for Figure 5 A partial cross-sectional view of the structure along the BB direction. The direction of AA is perpendicular to the direction of BB. Figure 9 To and Figure 8 A partial exploded view of the backlight module 100 from the same angle.

[0091] See also some of the possible implementation methods. Figures 5 to 9 As shown, the optical element 120 may include a light strip 121 and a terminal connector 122. The flexible plate 110 can be electrically connected to the light strip 121 through the terminal connector 122.

[0092] Among them, see Figure 6 and Figure 7 As shown, the terminal connector 122 may include a support surface 122a and a mounting portion 1221. The support surface 122a may be configured to support the flexible plate 110. Both the second connecting portion 120a and the mounting portion 1221 are disposed on the support surface 122a. The mounting portion 1221 and the support surface 122a enclose a limiting space 122c. One end of the flexible plate 110 may pass through the limiting space 122c, and the first connecting portion 110a of the flexible plate 110 is connected to the second connecting portion 120a of the optical element 120.

[0093] In this embodiment, a second connecting portion 120a is provided on the surface of the support surface 122a facing the flexible plate 110. The mounting portion 1221 can constrain the flexible plate 110 within the limiting space 122c, thereby reducing the possibility that the flexible plate 110 may experience large displacement due to force, which could affect the connection stability between the flexible plate 110 and the terminal connector 122. When the flexible plate 110 is located in the limiting space 122c, the first connecting portion 110a and the second connecting portion 120a on the flexible plate 110 can correspond to each other. When the first connecting portion 110a and the second connecting portion 120a are connected, the flexible plate 110 and the light strip 121 are electrically connected.

[0094] The mounting portion 1221 in this embodiment can be configured to constrain the flexible plate 110 to move on the support surface 122a. The mounting portion 1221 can be fixed to the support surface 122a, detachably connected to the support surface 122a, or movably connected to the support surface 122a; no limitation is made in this application.

[0095] For example, when the flexible plate 110 is placed on the support surface 122a, the mounting part 1221 can abut against the surface of the flexible plate 110 away from the first connecting part 110a, so that the first connecting part 110a and the second connecting part 120a can fit tightly together.

[0096] In some examples, the first connection portion 110a of the flexible plate 110 can be a first contact. The second connection portion 120a on the terminal connector 122 can be a second contact. Connecting the first and second contacts allows the flexible plate 110 to be electrically connected to the light strip 121.

[0097] In some examples, a light panel or light strip 121 is typically used to provide backlighting for the display panel 200. In this embodiment, a light strip 121 can be used to provide backlighting for the display panel 200. It is easy to understand that the area of ​​a light panel is much larger than the area of ​​a light strip 121, which can easily lead to increased costs. In this embodiment, there can be multiple light strips 121, which can be arranged in parallel on the back panel 140 to achieve the same effect as a light panel.

[0098] In some examples, each light strip 121 may be provided with a terminal connector 122. The flexible plate 110 may be provided with a plurality of first connecting portions 110a. One end of the flexible plate 110 may be sequentially passed through the limiting space 122c of the terminal connectors 122 on the plurality of light strips 121, so that each first connecting portion 110a is electrically connected after being aligned with the first connecting portion 110a on the terminal connector 122 on each light strip 121.

[0099] See also some of the possible implementation methods. Figure 8 and Figure 9 As shown, the backlight module 100 may further include a pressure plate 130. The pressure plate 130 and the terminal connector 122 may be correspondingly arranged. The flexible plate 110 may be pressed between the pressure plate 130 and the terminal connector 122.

[0100] In this embodiment, along the thickness direction Z of the display panel 200, the pressure plate 130 can be located on the side of the terminal connector 122 facing the flexible plate 110. The inner wall surface of the pressure plate 130 can be in contact with the flexible plate 110. The inner wall surface of the pressure plate 130 can refer to the surface of the pressure plate 130 facing the terminal connector 122.

[0101] When the flexible plate 110 is stretched by an external force, the inner wall of the pressure plate 130 is in contact with the flexible plate 110, which can increase the friction between the pressure plate 130 and the flexible plate 110. This friction can reduce the displacement of the flexible plate 110 under stress, thus reducing the possibility of affecting the connection stability between the flexible plate 110 and the terminal connector 122.

[0102] Specifically, see Figure 8 As shown, when the flexible plate 110 is subjected to a tensile force along its own length direction X, since the pressure plate 130 and the flexible plate 110 can be tightly connected, the friction between the opposing surfaces of the pressure plate 130 and the flexible plate 110 can prevent the flexible plate 110 from displacing, thereby effectively reducing the possibility of the flexible plate 110 shifting and causing poor connection effect of the terminal connector 122.

[0103] In addition, the pressure plate 130 can also have a protective function. The pressure plate 130 can cover the first connecting portion 110a and the second connecting portion 120a to protect the first connecting portion 110a and the second connecting portion 120a from external impact forces, thereby improving the connection stability between the flexible plate 110 and the optical element 120.

[0104] In some examples, the pressure plate 130 and the terminal connector 122 can be an integral structure. For example, the pressure plate 130 can be movably connected to the terminal connector 122 to save assembly steps. Alternatively, the pressure plate 130 and the terminal connector 122 can also be separate structures, with the pressure plate 130 tightly connected to the terminal connector 122 under external force, so that the flexible plate 110 can be pressed between the pressure plate 130 and the terminal connector 122. This is not limited in this embodiment.

[0105] See also some of the possible implementation methods. Figure 8 As shown, the pressure plate 130 and the terminal connector 122 in this embodiment can be separate structures.

[0106] During the production and assembly of the optical element 120, the terminal connector 122 needs to be inspected to avoid affecting the yield rate of the display device 10. If the pressure plate 130 and the terminal connector 122 are an integral structure, the pressure plate 130 needs to be opened first to expose the terminal connector 122 for inspection during the inspection process. After the inspection is completed, the pressure plate 130 needs to be closed, which easily leads to a cumbersome and complicated quality inspection process and is not conducive to automated operation. Therefore, in this embodiment, the pressure plate 130 and the terminal connector 122 can be designed as separate structures to facilitate the quality inspection of the optical element 120. After the quality inspection is qualified, the flexible plate 110 can be installed, and the flexible plate 110 is fixed between the pressure plate 130 and the terminal connector 122 by the pressure plate 130. The first connecting part 110a and the second connecting part 120a are electrically connected.

[0107] In this embodiment, the pressure plate 130 can press the flexible plate 110 between the pressure plate 130 and the terminal connector 122 after the first connecting portion 110a of the flexible plate 110 is connected to the second connecting portion 120a of the terminal connector 122. This reduces the possibility that the pressure plate 130 needs to have good high temperature resistance and high material requirements when fixing the pressure plate 130 and the flexible plate 110 by welding, which would lead to an increase in overall cost.

[0108] See also some of the possible implementation methods. Figure 8 and Figure 9 As shown, the pressure plate 130 in this embodiment may include a flat plate 131 and a reinforcing plate 132. Reinforcing plates 132 are respectively provided at both ends of the flat plate 131 along the length direction X of the flexible plate 110. An angle may be formed between the flat plate 131 and the reinforcing plate 132. The flat plate 131 and the reinforcing plate 132 may form an opening 130a facing the terminal connector 122. A portion of the flexible plate 110 and a portion of the terminal connector 122 may be located within the opening 130a, and a first connecting portion 110a and a second connecting portion 120a may be located within the opening 130a. The first connecting portion 110a and the second connecting portion 120a may be electrically connected at the opening 130a.

[0109] The surfaces of the reinforcing plate 132 and the flat plate 131 facing the terminal connector 122 can both contact the flexible plate 110, thus increasing the contact area between the pressure plate 130 and the flexible plate 110. This is beneficial for increasing the friction between the pressure plate 130 and the flexible plate 110 when the flexible plate 110 is subjected to tensile force, thereby more effectively improving the stability of the flexible plate 110 and the pressure plate 130.

[0110] In some examples, the angle between the reinforcing plate 132 and the flat plate 131 can be a right angle.

[0111] See also some of the possible implementation methods. Figure 2 and Figure 3 As shown, the optical element 120 may include a plurality of light strips 121. The plurality of light strips 121 may be arranged side by side and spaced apart along the length direction X of the flexible plate 110. The flexible plate 110 and the plurality of light strips 121 may be electrically connected. The mounting portion 1221 may include a first limiting portion 12211. Along the thickness direction Z of the display panel 200, the flexible plate 110 may be located between the first limiting portion 12211 and the support surface 122a.

[0112] See Figure 8As shown, along the thickness direction Z of the display panel 200, the distance between the first limiting part 12211 and the support surface 122a can be greater than or equal to the thickness of the flexible plate 110. When the flexible plate 110 is located in the limiting space 122c, the first limiting part 12211 can prevent the flexible plate 110 from dislodging from the limiting space 122c along the thickness direction Z of the display panel 200, thereby positioning the flexible plate 110 in the thickness direction Z of the display panel 200.

[0113] In some examples, when the distance between the first limiting part 12211 and the support surface 122a is greater than the thickness of the flexible plate 110, the distance between the first limiting part 12211 and the support surface 122a can meet the installation tolerance of the flexible plate 110, so as to avoid the limiting effect of the first limiting part 12211 failing due to the excessive distance between the first limiting part 12211 and the support surface 122a.

[0114] In some examples, reference Figure 3 As shown, the light strip 121 can be placed horizontally. The terminal connector 122 can be located in the middle region of the light strip 121. Multiple light strips 121 are spaced apart along a vertical direction (the length direction X of the flexible plate 110). The length direction X of the flexible plate 110 intersects the length direction Y of the light strip 121, forming an angle. For example, the length direction X of the flexible plate 110 and the length direction Y of the light strip 121 can be perpendicular.

[0115] Figure 10 This is a schematic diagram of the structure of a terminal connector 122 provided in this application.

[0116] See also some of the possible implementation methods. Figure 6 and Figure 7 As shown, the mounting portion 1221 also includes a second limiting portion 12212. Along the length direction Y of the light strip 121, the two ends of the support surface 122a may be respectively provided with the second limiting portion 12212. Along the thickness direction Z of the display panel 200, one end of the second limiting portion 12212 is connected to the support surface 122a, and the other end may be connected to the first limiting portion 12211.

[0117] The second limiting portion 12212 in this embodiment can constrain the flexible plate 110 from displacing along the length direction Y of the light strip 121. The distance between the second limiting portions 12212 along the length direction Y of the light strip 121 can be greater than or equal to the width of the flexible plate 110. A limiting space 122c can be formed between the opposing surfaces of the two second limiting portions 12212 and the supporting surface 122a. The two second limiting portions 12212 can prevent the flexible plate 110 from undergoing large displacement along the length direction Y of the light strip 121.

[0118] Along the length Y of the light strip 121, there is a gap between the two first limiting portions 12211 to facilitate the assembly and disassembly of the flexible plate 110. The distance between the opposite ends of the two first limiting portions 12211 can be less than the width of the flexible plate 110, so that the flexible plate 110 is not easily dislodged from between the two first limiting portions 12211, thereby limiting the flexible plate 110 in the thickness Z direction of the display panel 200.

[0119] In some examples, the first limiting portion 12211 and the support surface 122a can be arranged parallel to each other. The second limiting portion 12212 can be a flat plate structure to connect the first limiting portion 12211 and the support surface 122a. The first limiting portion 12211 may be provided with a chamfer to prevent the sharp corners of the first limiting portion 12211 from scratching the flexible plate 110 or the workers during installation.

[0120] Figure 11 A schematic diagram of the structure of a terminal connector 122 according to another embodiment of this application.

[0121] See in some examples Figure 11 As shown, a notch 1221a may be provided on the first limiting part 12211. The notch 1221a can facilitate the adjustment of the installation position of the flexible plate 110 to improve assembly efficiency. The notch 1221a may be provided on the surfaces of the two first limiting parts 12211 that are opposite to each other, and extends in the direction of the second limiting part 12212.

[0122] In some examples, the support surface 122a may be square in shape. Along the length Y of the light strip 121, a second limiting portion 12212 is provided on two opposite sides of the support surface 122a. The second limiting portion 12212 may be a plate with a wall thickness.

[0123] In some examples, when the second connection 120a is a second contact, solder feet can be formed on the terminal connector 122.

[0124] For example, two rows of solder feet can be formed along the length direction Y of the light strip 121 to form multiple pins. For instance, each row of solder feet can have two or three solder feet along the length direction X of the flexible board 110, that is, forming 4 pins or 6 pins. Figure 10 and Figure 11 The diagram shows 6 pins. It should be noted that the number of pins is not limited to 4 or 6.

[0125] See also some of the possible implementation methods. Figure 6 and Figure 10As shown, a third limiting portion 122b may be provided on one of the flexible plate 110 and the terminal connector 122, and a fourth limiting portion 110b may be provided on the other of the flexible plate 110 and the terminal connector 122. The third limiting portion 122b and the fourth limiting portion 110b are connected in a cooperative manner.

[0126] The third limiting part 122b and the fourth limiting part 110b of this embodiment are connected in a manner that makes it difficult for the flexible plate 110 to move relative to the terminal connector 122 along the length direction X of the flexible plate 110 and the length direction Y of the light strip 121, thereby limiting the flexible plate 110 on the support surface 122a. Furthermore, the connection between the third limiting part 122b and the fourth limiting part 110b, together with the first limiting part 12211, can be configured to position the flexible plate 110 within the limiting space 122c, thereby improving the connection reliability between the first connecting part 110a and the second connecting part 120a.

[0127] In some examples, the third limiting portion 122b can be a protrusion. The fourth limiting portion 110b can be a groove or a hole. The third limiting portion 122b can be provided on the support surface 122a of the terminal connector 122, and correspondingly, the fourth limiting portion 110b can be provided on the flexible plate 110; or, the fourth limiting portion 110b can be provided on the support surface 122a of the terminal connector 122, and correspondingly, the third limiting portion 122b can be provided on the flexible plate 110. When the third limiting portion 122b is located within the fourth limiting portion 110b, the inner wall of the fourth limiting portion 110b can be configured to constrain the displacement of the third limiting portion 122b.

[0128] For example, the shapes and sizes of the third limiting portion 122b and the fourth limiting portion 110b can be matched.

[0129] Figure 12 for Figure 3 Enlarged diagram of point C in the middle.

[0130] See also some of the possible implementation methods. Figure 3 and Figure 12As shown, the flexible board 110 may include a first board body 111 and a second board body 112. Along the length direction of the first board body 111 (i.e., the length direction X of the flexible board 110), the first board body 111 and the second board body 112 may be arranged side-by-side. The first board body 111 may be electrically connected to a portion of the LED strips 121. The second board body 112 may be electrically connected to the remaining portion of the LED strips 121. The backlight module 100 may also include a back plate 140. Optical elements 120 may be disposed on the back plate 140. The back plate 140 may have a first through hole 140a and a second through hole 140b. The first board body 111 may pass through the first through hole 140a to be connected to the power supply 300. The second board body 112 may pass through the second through hole 140b to be connected to the power supply 300.

[0131] In some examples, the end of the first board 111 connected to the power supply 300 may have a plug. The first board 111 can be directly connected to the power supply 300 via the plug, without the need for further connection through other connector structures. The end of the second board 112 connected to the power supply 300 may also have a plug. The second board 112 can be directly connected to the power supply 300 via the plug, providing high connection reliability.

[0132] In some examples, the power supply 300 and the motherboard 400 can be electrically connected via a cable.

[0133] In some examples, the plugs on the ends of the first plate 111 and the second plate 112 may be FFC (Flexible Flat Cable) plugs.

[0134] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0135] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A display device, characterized by comprising: The display device comprises: a display panel; a backlight module located at the light-incident side of the display panel and configured to provide backlight; the backlight module comprises: a flexible plate provided with a first connecting portion; an optical element electrically connected to the flexible plate, the optical element being provided with a second connecting portion corresponding to the first connecting portion, the optical element comprising a terminal connector, the terminal connector having a limiting space, part of the flexible plate being located in the limiting space to electrically connect the first connecting portion and the second connecting portion; a pressing plate corresponding to the terminal connector and pressing part of the flexible plate against the terminal connector.

2. The display device of claim 1, wherein, The pressing plate comprises a flat plate and a reinforcing plate, both ends of the flat plate being respectively provided with the reinforcing plate along the length direction of the flexible plate, the flat plate and the reinforcing plate having an included angle therebetween to form an opening facing the terminal connector, part of the flexible plate and part of the terminal connector being located in the opening.

3. The display device of claim 2, wherein, The opening of the pressing plate is located opposite the limiting space along the thickness direction of the display panel, and the first connecting portion and the second connecting portion are located in the opening and the limiting space.

4. The display device according to any one of claims 1 to 3, characterized in that, The pressing plate and the terminal connector are in a split structure, or the pressing plate and the terminal connector are in an integrated structure.

5. The display device of claim 1, wherein, The optical element comprises a light bar, and the flexible plate is electrically connected to the light bar through the terminal connector. The terminal connector comprises a supporting surface and a mounting portion, the supporting surface being configured to support the flexible plate, the second connecting portion and the mounting portion being both arranged on the supporting surface, and the mounting portion and the supporting surface form the limiting space.

6. The display device of claim 5, wherein, The mounting portion comprises a first limiting portion, the first limiting portion being arranged apart from the supporting surface along the thickness direction of the display panel, and part of the flexible plate being located between the first limiting portion and the supporting surface.

7. The display device of claim 6, wherein, Along the length direction of the light bar, the mounting portion comprises two first limiting portions arranged apart, the first limiting portion being provided with a notch, the notch being located on the surface of the two first limiting portions opposite to each other, and the notch extending away from the two first limiting portions.

8. The display device of claim 6, wherein, The mounting portion further comprises a second limiting portion, both ends of the supporting surface being respectively provided with the second limiting portion along the length direction of the light bar, one end of the second limiting portion being connected to the supporting surface and the other end being connected to the first limiting portion along the thickness direction of the display panel.

9. The display device of claim 8, wherein, Along the length direction of the light bar, the distance between the second limiting portions is greater than or equal to the width of the flexible plate.

10. The display device of claim 8, wherein, Along the length direction of the light bar, the distance between the ends of the two first limiting portions opposite to each other is less than the width of the flexible plate.

11. The display device of claim 5, wherein, The optical element comprises a plurality of light bars, the plurality of light bars being arranged side by side and apart along the length direction of the flexible plate. The flexible plate is provided with a plurality of first connecting portions arranged apart, the flexible plate being arranged through the limiting space of the terminal connector of the plurality of light bars, and the first connecting portions being connected to the second connecting portions of the terminal connectors one by one.

12. The display device of claim 1, wherein, The backlight module further comprises a back plate, part of the flexible plate is arranged on one side of the back plate facing the display panel, and one end of the flexible plate is arranged through the back plate and connected with the power supply.

13. The display device of claim 1, wherein, One of the flexible plate and the terminal connector is provided with a third limiting part, and the other of the flexible plate and the terminal connector is provided with a fourth limiting part, and the third limiting part and the fourth limiting part are connected in cooperation.

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