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

Technical Field

[0001] The embodiments of the present application relate to display technology, and more particularly to a display device. Background Art

[0002] Flat panel displays and televisions are currently the mainstream display devices, with advantages such as low power consumption, small size, and low radiation. Display devices include display panels, which are non-self-luminous panels and therefore need to be used in conjunction with backlight modules. The backlight module can provide the display panel with the light required to display images.

[0003] In the related art, the backlight module includes a light bar and an adapter plate. The adapter plate is connected to multiple light bars through an adapter. The adapter plate and the light bar generate heat during operation, which easily causes the adapter plate to expand and contract due to heat, thereby causing the problem of poor connection between the light bar and the adapter plate. In order to avoid the above phenomenon, the size of the connector between the adapter plate and the light bar needs to reserve a large size margin, which easily leads to a large size of the adapter plate and high cost. Utility Model Content

[0004] The embodiment of the present application provides a display device, which can solve the problem of poor connection between an adapter plate and a light bar due to thermal expansion and contraction.

[0005] In a first aspect, an embodiment of the present application provides a display device, comprising:

[0006] A display panel configured to display an image;

[0007] A backlight module, located at the light incident side of the display panel, configured to provide backlight;

[0008] The backlight module comprises:

[0009] A flexible board having a first connecting portion;

[0010] An optical element is electrically connected to the flexible board, the optical element is provided with a second connection portion corresponding to the first connection portion, and the first connection portion and the second connection portion are electrically connected

[0011] Connected to optical components through flexible boards. Flexible boards are printed circuits supported by flexible insulating substrates and have good flexibility. When a flexible board is deformed by force, it can maintain its deformed shape after the force is lost. Therefore, the flexible board is not easily affected by thermal expansion and contraction, thereby reducing the possibility of poor connection between the optical component and the flexible board.

[0012] In some embodiments of the present application, the first connection portion of the flexible board is fixedly connected to the second connection portion on the optical element.

[0013] In this way, the way in which the flexible board and the optical element are fixedly connected can improve the connection stability between the two. In addition, the flexible board can be provided with only the first solder pad. The optical element can be provided with only the second solder pad. The flexible board and the optical element can be directly connected via the first solder pad and the second solder pad, thereby saving the cost of providing a terminal joint.

[0014] In some embodiments of the present application, the optical element includes a light bar and a terminal connector, and the flexible board is electrically connected to the light bar through the terminal connector;

[0015] Wherein, the terminal connector includes a supporting surface and a mounting portion, the supporting surface is configured to support the flexible board, the second connecting portion and the mounting portion are both arranged on the supporting surface, the mounting portion and the supporting surface are surrounded to form a limited space, one end of the flexible board can be inserted into the limited space, and the first connecting portion of the flexible board is aligned with the second connecting portion of the optical element.

[0016] In this way, the mounting portion can constrain the flexible board within the limited space to reduce the possibility that the flexible board is subjected to a large displacement, thereby affecting the connection stability between the flexible board and the terminal connector. When the flexible board is located in the limited space, the first connection portion and the second connection portion on the flexible board can correspond to each other. When the first connection portion and the second connection portion are connected, the flexible board and the light bar are electrically conductive.

[0017] In some embodiments of the present application, the backlight module further includes a pressing plate, the pressing plate is arranged corresponding to the terminal connector, and the flexible board is pressed between the pressing plate and the terminal connector.

[0018] With such arrangement, when the flexible board is pulled by external forces, the inner wall surface of the pressure plate fits with the flexible board to increase the friction between the pressure plate and the flexible board, thereby reducing the displacement of the flexible board caused by the force through the friction between the pressure plate and the flexible board, thereby affecting the possibility of affecting the connection stability of the flexible board and the terminal connector.

[0019] In some embodiments of the present application, the pressing plate and the terminal connector are separate structures.

[0020] During the production and assembly of optical elements, the terminal connectors need to be quality inspected to avoid affecting the factory yield of the display device. If the pressure plate and the terminal connector are an integrated structure, during the inspection process, the pressure plate needs to be opened first to expose the terminal connector for inspection. After the inspection is completed, the pressure plate needs to be closed, which can easily lead to the cumbersome and complicated quality inspection process and is not conducive to automated operation. Therefore, the pressure plate and the terminal connector in this embodiment can be designed as a split structure to facilitate the quality inspection of the optical element. After the quality inspection is qualified, the flexible board can be installed and fixed between the pressure plate and the terminal connector by the pressure plate, and the first connection part and the second connection part are electrically conductive.

[0021] In some embodiments of the present application, the pressure plate includes a flat plate and a reinforcing plate. The reinforcing plates are respectively provided at both ends of the flat plate along the length direction of the flexible plate. An angle is provided between the flat plate and the reinforcing plate to form an opening facing the terminal connector, and part of the flexible plate and part of the terminal connector are located in the opening.

[0022] Such an arrangement can increase the contact area between the pressing plate and the flexible plate, which is beneficial to improving the friction force generated between the pressing plate and the flexible plate when the flexible plate is subjected to a pulling force, thereby more effectively improving the stability of the flexible plate and the pressing plate.

[0023] In some embodiments of the present application, the optical element includes a plurality of light bars, and the plurality of light bars are arranged side by side and at intervals along the length direction of the flexible board;

[0024] The mounting portion includes a first limiting portion, and along the thickness direction of the display panel, the flexible board is located between the first limiting portion and the supporting surface.

[0025] In this way, the first limiting portion can prevent the flexible board from escaping from the limiting space along the thickness direction of the display panel, so as to position the flexible board in the thickness direction of the display panel.

[0026] In some embodiments of the present application, the mounting portion further includes a second limiting portion, and along the length direction of the light bar, the second limiting portions are respectively provided at both ends of the supporting surface, and 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;

[0027] Wherein, along the length direction of the light bar, the distance between the second limiting parts is greater than or equal to the width of the flexible board;

[0028] Along the length direction of the light bar, the distance between the ends of the two first limiting portions facing each other is smaller than the width of the flexible board.

[0029] In this way, the second limiting parts can constrain the flexible board from displacement along the length direction of the light bar. In the length direction of the light bar, the distance between the second limiting parts can be greater than or equal to the width of the flexible board. A limiting space can be formed between the surfaces of the two second limiting parts facing each other and the supporting surface. The two second limiting parts can prevent the flexible board from large displacement along the length direction of the light bar.

[0030] In some embodiments of the present application, a third limiting portion is provided on one of the flexible board and the terminal connector, and a fourth limiting portion is provided on the other of the flexible board and the terminal connector, and the third limiting portion is cooperatively connected with the fourth limiting portion.

[0031] Such an arrangement can make it difficult for the flexible board to move relative to the terminal connector along the length direction of the flexible board and along the length direction of the light bar, so as to limit the position of the flexible board on the support surface. In addition, the matching connection of the third limiting part and the fourth limiting part and the first limiting part can be configured together to make the flexible board located in the limiting space, thereby improving the connection reliability of the first connection part and the second connection part.

[0032] In a second aspect, an embodiment of the present application provides a display device, comprising a display panel and a backlight module, wherein the backlight module is arranged on the light incident side of the display panel, and the backlight module comprises a flexible board and an optical element, wherein the flexible board is provided with a first connecting portion, and the optical element is provided with a second connecting portion corresponding to the first connecting portion, and the first connecting portion and the second connecting portion are electrically conductive. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the implementation methods in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technology descriptions. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0034] Figure 1 A schematic cross-sectional view of a display device according to an embodiment of the present application;

[0035] Figure 2 A schematic diagram of the exploded structure of a display device according to an embodiment of the present application;

[0036] Figure 3 A schematic diagram of a partial main view structure of a display device according to an embodiment of the present application;

[0037] Figure 4 A schematic diagram of a partial exploded structure of a backlight module according to an embodiment of the present application;

[0038] Figure 5 This is a partial front view structural diagram of a backlight module according to an embodiment of the present application;

[0039] Figure 6 for Figure 5 A schematic diagram of the local cross-sectional structure along the AA direction;

[0040] Figure 7 A schematic diagram of a partial exploded structure of a backlight module according to an embodiment of the present application;

[0041] Figure 8 for Figure 5 A schematic diagram of the local cross-sectional structure along the BB direction;

[0042] Fig. 9 for Figure 8 Schematic diagram of the decomposition structure;

[0043] Fig.10 This is a schematic structural diagram of a terminal connector according to an embodiment of the present application;

[0044] Fig.11 This is a schematic structural diagram of a terminal connector according to another embodiment of the present application;

[0045] Fig.12 for Figure 3 Enlarged schematic diagram of point C in the middle.

[0046] Description of reference numerals:

[0047] 10- Display device;

[0048] 100-backlight module;

[0049] 110-flexible board; 110a-first connecting portion; 110b-fourth limiting portion;

[0050] 111-first plate; 112-second plate;

[0051] 120-optical element; 120a-second connecting portion;

[0052] 121-light bar;

[0053] 122-terminal connector; 122a-support surface; 122b-third limiting portion; 122c-limiting space;

[0054] 1221-installation portion; 1221a-recess; 12211-first limiting portion; 12212-second limiting portion;

[0055] 130-pressing plate; 130a-opening; 131-flat plate; 132-reinforcement plate;

[0056] 140-back plate; 140a-first through hole; 140b-second through hole;

[0057] 200-display panel;

[0058] 300-Power Supply

[0059] 400-Motherboard. DETAILED DESCRIPTION

[0060] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0061] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0062] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such products or devices.

[0063] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0064] The terms "first" and "second" are only configured for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0065] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0066] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0067] Display devices such as flat panel displays and televisions can be configured to display images. Taking a liquid crystal display (LCD) device as an example, a liquid crystal display device is mainly composed of a backlight module, a liquid crystal panel, and a drive circuit. As a display panel, the liquid crystal panel does not emit light by itself, and needs to rely on the light source provided by the optical elements in the backlight module to achieve brightness display. The display principle of the liquid crystal display is to place the liquid crystal between two pieces of conductive glass, and rely on the electric field between the two electrodes to drive the electric field effect of the liquid crystal molecules to twist the nematics, so as to control the transmission or shielding function of the back optical element, thereby displaying the image. If a color filter is added, a color image can be displayed.

[0068] In the related art, the backlight module includes a light bar and an adapter plate. Each light bar can be connected to an external circuit through a separate connecting wire, and the connection method is simple. However, each light bar is equipped with a connecting wire, and the connecting wires cannot be shared, which easily leads to the problems of more overall lines, greater impedance and higher cost.

[0069] Therefore, an adapter plate can be connected to each light bar, and then connected to an external circuit to solve the above technical problems. However, the applicant found that the adapter plate is a rigid material, and the heat generated during the operation of the display device can easily cause the adapter plate to expand and contract due to heat, resulting in poor connection between the light bar and the adapter plate. For example, after the adapter plate expands due to heat, it is easy for the adapter plate to press against the joint on the light bar in the direction away from the adapter plate to cause the joint to detach from the adapter plate. When the adapter plate returns to normal temperature, it shrinks, which can easily cause the joint on the light bar to separate from the adapter plate. In order to avoid the above phenomenon, the size of the connector between the adapter plate and the light bar needs to reserve a large size margin, which can easily lead to a large size and high cost of the adapter plate.

[0070] Based on the above technical problems, the applicant has improved the structure of the existing display device. In the present application, a flexible board can be connected to the optical element. The flexible board is a flexible printed circuit board (FPC). The flexible board is a printed circuit supported by a flexible insulating substrate and has good flexibility. When the flexible board is deformed by force, it can maintain the shape when deformed by force after the force is lost. Therefore, the flexible board is not easily affected by thermal expansion and contraction, thereby reducing the possibility of poor connection between the optical element and the flexible board.

[0071] The display device provided in the present application is described below with reference to the accompanying drawings and in combination with specific embodiments.

[0072] Figure 1 A schematic cross-sectional structure diagram of a display device 10 provided in the present application. Figure 2 A schematic diagram of the exploded structure of a display device 10 provided in the present application.

[0073] See also 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 to display an image. The backlight module 100 may be located at a light incident side of the display panel 200. The backlight module 100 may be configured to provide backlight to the display panel 200.

[0074] The backlight module 100 may include a flexible board 110 and an optical element 120. The flexible board 110 may be provided with a first connection portion 110a. The optical element 120 is electrically connected to the flexible board 110. The optical element 120 may be provided with a second connection portion 120a corresponding to the first connection portion 110a. The first connection portion 110a and the second connection portion 120a are electrically connected.

[0075] The embodiment of the present application connects the optical element 120 via the flexible board 110 , so that the connection reliability between the flexible board 110 and the optical element 120 is not easily affected by thermal expansion and contraction.

[0076] Specifically, when the heat generated during the operation of the display device 10 causes the flexible board 110 to expand, the toughness of the flexible board 110 can weaken the pulling force (expansion force) it receives, so that the first connection portion 110a can move synchronously with the deformation of the flexible board 110, and the force of the flexible board 110 on the optical element 120 can make the second connection portion 120a on the optical element 120 move synchronously, thereby reducing the possibility of poor connection between the interface on the optical element 120 and the flexible board 110. Similarly, when the display device 10 stops running, the toughness of the flexible board 110 can also block the contraction force it receives. The first connection portion 110a can move synchronously with the deformation of the flexible board 110, and the force of the flexible board 110 on the optical element 120 can make the second connection portion 120a on the optical element 120 move synchronously, thereby reducing the possibility of poor connection between the interface on the optical element 120 and the flexible board 110. Furthermore, it is easy to understand that when the display device 10 stops running to cool the flexible board 110 , the flexible board 110 is less likely to shrink and thus cause poor contact between the flexible board 110 and the optical element 120 due to its good flexibility.

[0077] In some examples, the first connection portion 110a and the second connection portion 120a can be attached to each other so that the flexible board 110 and the optical element 120 are electrically connected. Alternatively, the first connection portion 110a and the second connection portion 120a can also be electrically connected through a conductive component. Specifically, the first connection portion 110a and the second connection portion 120a are both electrically connected to the conductive component. The conductive component can achieve stable connection between the first connection portion 110a and the second connection portion 120a.

[0078] Figure 3 It is a schematic diagram of the main structure of the backlight module 100 when the user faces the light emitting side of the display panel 200 .

[0079] For some examples, see Figure 2 and Figure 3 As shown, the backlight module 100 may further include a back plate 140. The back plate 140 may be configured to support components such as the optical element 120, and may also play a role in heat dissipation for the optical element 120.

[0080] The optical element 120 may be disposed on the back plate 140. Since the back plate 140 has a supporting function and is easily deformed, the flexible plate 110 of the embodiment of the present application is not easily affected by the deformation of the back plate 140 when fixed to the back plate 140, which can reduce the phenomenon that one of the two rigid connections is deformed to affect the connection stability of the two.

[0081] In some examples, the backlight module 100 is usually 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 as a display device or a mobile terminal, the backlight module 100 usually adopts a rectangular shape.

[0082] For example, when the display panel 200 is configured as a rectangle, see Figure 2 In the direction shown, the display panel 200 may include a sky side, a ground side, a left side, and a right side. The sky side and the ground side of the display panel 200 are opposite to each other, the left side and the right side are opposite to each other, the sky 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.

[0083] In some examples, the shape of the back plate 140 may also be set to be rectangular.

[0084] In some examples, the display panel 200 may be a transmissive display panel 200, which can modulate the transmittance of light but does not emit light itself. The display panel 200 may have a plurality of pixel units arranged in an array. Each pixel unit may independently control the transmittance and color of the light incident on the pixel unit by the backlight module 100, so that the light transmitted by all pixel units constitutes a displayed image.

[0085] In some achievable embodiments, the first connection portion 110 a of the flexible board 110 and the second connection portion 120 a on the optical element 120 may be fixedly connected.

[0086] Figure 4In one embodiment provided in the present application, a schematic diagram of an exploded structure of a flexible board 110 connected to an optical element 120 is provided. In this case, no additional joint is required to connect the flexible board 110 to the optical element 120.

[0087] For some examples, see Figure 4 As shown, the first connection portion 110a of the flexible board 110 may be a first pad. The second connection portion 120a on the optical element 120 may 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 may be arranged opposite to each other, and the flexible board 110 and the optical element 120 may be fixedly connected and electrically conductive through a welding process.

[0088] It is understandable that the way in which the flexible board 110 and the optical element 120 are fixedly connected can improve the connection stability between the two. In addition, only the first pad may be provided on the flexible board 110. Only the second pad may be provided on the optical element 120. The flexible board 110 and the optical element 120 can be directly connected via the first pad and the second pad, thereby saving the cost of providing the terminal connector 122.

[0089] Figure 5 This is a schematic diagram of the connection structure between the flexible board 110 and the optical element 120 in a backlight module 100 provided in the present application. Figure 6 for Figure 5 Schematic diagram of the local cross-sectional structure along the AA direction. Figure 7 For Figure 6 Schematic diagram of a partial exploded structure of the backlight module 100 at the same viewing angle. Figure 8 for Figure 5 The schematic diagram of the local cross-sectional structure along the BB direction, wherein the AA direction is perpendicular to the BB direction. Fig. 9 For Figure 8 Schematic diagram of a partial exploded structure of the backlight module 100 at the same viewing angle.

[0090] In some possible implementations, see Figures 5 to 9 As shown, the optical element 120 may include a light bar 121 and a terminal connector 122 . The flexible board 110 may be electrically connected to the light bar 121 through the terminal connector 122 .

[0091] Among them, see Figure 6 and Figure 7As 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 board 110. The second connection portion 120a and the mounting portion 1221 are both disposed on the support surface 122a. The mounting portion 1221 and the support surface 122a are surrounded to form a limited position space 122c. One end of the flexible board 110 may be inserted into the limited position space 122c, and the first connection portion 110a of the flexible board 110 is connected to the second connection portion 120a of the optical element 120.

[0092] In the embodiment of the present application, the surface of the support surface 122a facing the flexible board 110 is provided with a second connection portion 120a. The mounting portion 1221 can constrain the flexible board 110 within the limiting space 122c to reduce the possibility of a large displacement of the flexible board 110 due to force, thereby affecting the connection stability between the flexible board 110 and the terminal connector 122. When the flexible board 110 is located in the limiting space 122c, the first connection portion 110a and the second connection portion 120a on the flexible board 110 can correspond to each other. When the first connection portion 110a and the second connection portion 120a are connected, the flexible board 110 and the light bar 121 are electrically conductive.

[0093] The mounting portion 1221 of the embodiment of the present application can be configured to constrain the flexible board 110 to move on the support surface 122a. The mounting portion 1221 can be fixed to the support surface 122a, or can be detachably connected to the support surface 122a, or the mounting portion 1221 can be movably connected to the support surface 122a, which is not limited in the present application.

[0094] Exemplarily, when the flexible board 110 is placed on the support surface 122a, the mounting portion 1221 may abut against a surface of the flexible board 110 away from the first connecting portion 110a, so that the first connecting portion 110a and the second connecting portion 120a may fit closely.

[0095] In some examples, the first connection portion 110a of the flexible board 110 may be a first contact. The second connection portion 120a on the terminal connector 122 may be a second contact. The first contact and the second contact are connected to electrically connect the flexible board 110 to the light bar 121.

[0096] In some examples, a light board or light bar 121 is generally used to provide backlight for the display panel 200. In the embodiment of the present application, the light bar 121 can be used to provide backlight for the display panel 200. It is easy to understand that the area of ​​the light board is much larger than the area of ​​the light bar 121, so it is easy to increase the cost. In the embodiment of the present application, the number of light bars 121 can be multiple, and multiple light bars 121 can be arranged in parallel on the back panel 140 to achieve the same effect as the light board.

[0097] In some examples, each light bar 121 may be provided with a terminal connector 122. A plurality of first connection portions 110a may be provided on the flexible board 110. One end of the flexible board 110 may be sequentially passed through the limiting spaces 122c of the terminal connectors 122 on the plurality of light bars 121, so that each first connection portion 110a is electrically connected to the first connection portion 110a on the terminal connector 122 on each light bar 121 after being opposed to each other.

[0098] In some possible implementations, see Figure 8 and Fig. 9 As shown, the backlight module 100 may further include a pressing plate 130 . The pressing plate 130 and the terminal connector 122 may be disposed correspondingly. The flexible board 110 may be pressed between the pressing plate 130 and the terminal connector 122 .

[0099] In the embodiment of the present application, along the thickness direction Z of the display panel 200, the pressing plate 130 may be located on the side of the terminal connector 122 facing the flexible board 110. The inner wall surface of the pressing plate 130 may be in contact with the flexible board 110. The inner wall surface of the pressing plate 130 may refer to the surface of the pressing plate 130 facing the terminal connector 122.

[0100] When the flexible board 110 is pulled by an external force, the inner wall surface of the pressure plate 130 fits against the flexible board 110 to increase the friction between the pressure plate 130 and the flexible board 110, thereby reducing the displacement of the flexible board 110 caused by the force through the friction between the pressure plate 130 and the flexible board 110, thereby affecting the possibility of affecting the connection stability between the flexible board 110 and the terminal connector 122.

[0101] Specifically, see Figure 8 As shown, when the flexible board 110 is subjected to a pulling force along its own length direction X, since the pressure plate 130 and the flexible board 110 can be tightly connected, the friction between the surfaces opposite to each other of the pressure plate 130 and the flexible board 110 can prevent the flexible board 110 from being displaced, thereby effectively reducing the possibility of the flexible board 110 being offset and causing poor connection effect of the terminal connector 122.

[0102] In addition, the pressing plate 130 can also have a protective function. The pressing 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 force, thereby improving the connection stability between the flexible board 110 and the optical element 120.

[0103] In some examples, the pressing plate 130 and the terminal connector 122 may be an integral structure. For example, the pressing plate 130 may be movably connected to the terminal connector 122 to save assembly steps. Alternatively, the pressing plate 130 and the terminal connector 122 may also be separate structures, and the pressing plate 130 may be tightly connected to the terminal connector 122 under the action of an external force, so that the flexible board 110 may be pressed between the pressing plate 130 and the terminal connector 122, which is not limited in this embodiment.

[0104] In some possible implementations, see Figure 8 As shown, the pressing plate 130 and the terminal connector 122 in this embodiment can be separate structures.

[0105] During the production and assembly process of the optical element 120, the terminal connector 122 needs to be quality inspected to avoid affecting the factory yield of the display device 10. If the pressure plate 130 and the terminal connector 122 are an integrated structure, during the inspection process, the pressure plate 130 needs to be opened first to expose the terminal connector 122 for inspection. After the inspection is completed, the pressure plate 130 needs to be closed, which easily leads to the cumbersome and complicated quality inspection process and is not conducive to automated operation. Therefore, the pressure plate 130 and the terminal connector 122 in this embodiment can be designed as a split structure to facilitate the quality inspection of the optical element 120. After the quality inspection is qualified, the flexible board 110 can be installed, and the flexible board 110 can be fixed between the pressure plate 130 and the terminal connector 122 through the pressure plate 130, and the first connection part 110a and the second connection part 120a are electrically conductive.

[0106] The pressure plate 130 of the embodiment of the present application can crimp the flexible board 110 between the pressure plate 130 and the terminal connector 122 after the first connection portion 110a of the flexible board 110 is connected to the second connection portion 120a of the terminal connector 122, so as to reduce the possibility of an increase in overall cost due to the need for the pressure plate 130 to have good high temperature resistance and high material requirements for the pressure plate 130 when fixing the pressure plate 130 and the flexible board 110 using a welding process.

[0107] In some possible implementations, see Figure 8 and Fig. 9 As shown, the pressing plate 130 of the embodiment of the present application may include a flat plate 131 and a reinforcing plate 132. Along the length direction X of the flexible plate 110, reinforcing plates 132 are respectively provided at both ends of the flat plate 131. 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 fitting 122. Part of the flexible plate 110 and part of the terminal fitting 122 may be located in the opening 130a, and the first connecting portion 110a and the second connecting portion 120a may be located in the opening 130a. The first connecting portion 110a and the second connecting portion 120a may be electrically connected at the opening 130a.

[0108] The surfaces of the reinforcing plate 132 and the flat plate 131 facing the terminal connector 122 can both contact the flexible board 110, thereby increasing the contact area between the pressure plate 130 and the flexible board 110, which is beneficial to increasing the friction force generated between the pressure plate 130 and the flexible board 110 when the flexible board 110 is subjected to a pulling force, thereby more effectively improving the stability of the flexible board 110 and the pressure plate 130.

[0109] In some examples, the angle between the reinforcing plate 132 and the flat plate 131 may be a right angle.

[0110] In some possible implementations, see Figure 2 and Figure 3 As shown, the optical element 120 may include a plurality of light bars 121. The plurality of light bars 121 may be arranged side by side and spaced apart along the length direction X of the flexible board 110. The flexible board 110 and the plurality of light bars 121 may be electrically connected. The mounting portion 1221 may include a first position limiting portion 12211. Along the thickness direction Z of the display panel 200, the flexible board 110 may be located between the first position limiting portion 12211 and the support surface 122a.

[0111] See also Figure 8 As shown, along the thickness direction Z of the display panel 200, the distance between the first limiting portion 12211 and the supporting surface 122a may be greater than or equal to the thickness of the flexible board 110. When the flexible board 110 is located in the limiting space 122c, the first limiting portion 12211 may prevent the flexible board 110 from escaping from the limiting space 122c along the thickness direction Z of the display panel 200, so as to position the flexible board 110 in the thickness direction Z of the display panel 200.

[0112] In some examples, when the distance between the first limiting portion 12211 and the supporting surface 122a is greater than the thickness of the flexible board 110, the distance between the first limiting portion 12211 and the supporting surface 122a can meet the installation tolerance of the flexible board 110 to avoid the limiting effect of the first limiting portion 12211 being ineffective due to the distance between the first limiting portion 12211 and the supporting surface 122a being too large.

[0113] In some examples, reference Figure 3 In the direction shown, the light bar 121 can be placed horizontally. The terminal connector 122 can be arranged in the middle area of ​​the light bar 121. Multiple light bars 121 are arranged at intervals along the vertical direction (the length direction X of the flexible board 110). The length direction X of the flexible board 110 and the length direction Y of the light bar 121 intersect and have an angle. For example, the length direction X of the flexible board 110 and the length direction Y of the light bar 121 can be perpendicular to each other.

[0114] Fig.10 This is a schematic diagram of the structure of a terminal connector 122 provided in the present application.

[0115] In some possible implementations, see Figure 6 and Figure 7 As shown, the mounting portion 1221 further includes a second limiting portion 12212. Along the length direction Y of the light bar 121, the two ends of the support surface 122a may be provided with a second limiting portion 12212 respectively. 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.

[0116] The second limiting portion 12212 of the embodiment of the present application can constrain the flexible board 110 from displacement along the length direction Y of the light bar 121. In particular, along the length direction Y of the light bar 121, the distance between the second limiting portions 12212 can be greater than or equal to the width of the flexible board 110. A limiting space 122c can be formed between the surfaces of the two second limiting portions 12212 facing each other and the support surface 122a. The two second limiting portions 12212 can prevent the flexible board 110 from large displacement along the length direction Y of the light bar 121.

[0117] Along the length direction Y of the light bar 121, there is a gap between the two first limiting portions 12211 to facilitate the assembly and disassembly of the flexible board 110. The distance between the ends of the two first limiting portions 12211 facing each other can be smaller than the width of the flexible board 110, so that the flexible board 110 is not easy to escape from between the two first limiting portions 12211, so as to limit the flexible board 110 in the thickness direction Z of the display panel 200.

[0118] In some examples, the first limit portion 12211 and the support surface 122a can be arranged in parallel. The second limit portion 12212 can be a flat plate 131 structure to connect the first limit portion 12211 and the support surface 122a. The first limit portion 12211 can be provided with a chamfer to prevent the sharp corners of the first limit portion 12211 from scratching the flexible board 110 or the staff during the installation process.

[0119] Fig.11 This is a schematic structural diagram of a terminal connector 122 according to another embodiment of the present application.

[0120] For some examples, see Fig.11 As shown, a notch 1221a may be provided on the first limiting portion 12211. The notch 1221a can facilitate adjustment of the installation position of the flexible board 110 to improve assembly efficiency. The notch 1221a may be provided on the surfaces of the two first limiting portions 12211 facing each other and extend in the direction of the second limiting portion 12212.

[0121] In some examples, the shape of the support surface 122a may be a square. Along the length direction Y of the light bar 121, two opposite sides of the support surface 122a are provided with second limiting portions 12212. The second limiting portion 12212 may be a plate with a thick wall.

[0122] In some examples, when the second connection portion 120 a is a second contact, a solder fillet may be formed on the terminal fitting 122 .

[0123] Exemplarily, two rows of solder feet may be formed along the length direction Y of the light bar 121 to form a plurality of pins. For example, each row of solder feet may be provided with two or three solder feet along the length direction X of the flexible board 110, that is, 4 pins or 6 pins are formed. Fig.10 and Fig.11 There are 6 pins shown in FIG. It should be noted that the number of pins is not limited to 4 or 6.

[0124] In some possible implementations, see Figure 6 and Fig.10 As shown, a third limiting portion 122b may be provided on one of the flexible board 110 and the terminal connector 122, and a fourth limiting portion 110b may be provided on the other of the flexible board 110 and the terminal connector 122. The third limiting portion 122b is cooperatively connected with the fourth limiting portion 110b.

[0125] The third limiting portion 122b and the fourth limiting portion 110b of the embodiment of the present application are matched and connected so that the flexible board 110 is not easy to move relative to the terminal connector 122 along the length direction X of the flexible board 110 and along the length direction Y of the light bar 121, so as to limit the flexible board 110 on the support surface 122a. In addition, the matching connection of the third limiting portion 122b and the fourth limiting portion 110b and the first limiting portion 12211 can be configured together to make the flexible board 110 located in the limiting space 122c, thereby improving the connection reliability of the first connection portion 110a and the second connection portion 120a.

[0126] In some examples, the third limiting portion 122b may be a raised structure. The fourth limiting portion 110b may be a groove or hole structure. The third limiting portion 122b may be provided on the support surface 122a of the terminal connector 122, and correspondingly, the fourth limiting portion 110b may be provided on the flexible board 110; or, the fourth limiting portion 110b may be provided on the support surface 122a of the terminal connector 122, and correspondingly, the third limiting portion 122b may be provided on the flexible board 110. When the third limiting portion 122b is located in the fourth limiting portion 110b, the inner wall of the fourth limiting portion 110b may be configured to constrain the third limiting portion 122b from displacement.

[0127] Exemplarily, the shapes and sizes of the third limiting portion 122b and the fourth limiting portion 110b may match.

[0128] Fig.12 for Figure 3 Enlarged schematic diagram of point C in the middle.

[0129] In some possible implementations, see Figure 3 and Fig.12 As shown, the flexible board 110 may include a first board 111 and a second board 112. Along the length direction of the first board 111 (i.e., the length direction X of the flexible board 110), the first board 111 and the second board 112 may be arranged side by side. The first board 111 may be electrically connected to a portion of the light bar 121. The second board 112 may be electrically connected to the remaining portion of the light bar 121. The backlight module 100 may further include a back plate 140. The optical element 120 may be disposed on the back plate 140. The back plate 140 may be provided with a first through hole 140a and a second through hole 140b. The first board 111 may be provided through the first through hole 140a to be connected to the power supply 300. The second board 112 may be provided through the second through hole 140b to be connected to the power supply 300.

[0130] In some examples, a plug may be provided at one end of the first board 111 connected to the power supply 300. The first board 111 may be directly connected to the power supply 300 through the plug without being connected through other connector structures. A plug may also be provided at one end of the second board 112 connected to the power supply 300. The second board 112 may be directly connected to the power supply 300 through the plug, which has a higher connection reliability.

[0131] In some examples, the power supply 300 and the mainboard 400 may be electrically connected via a connection line.

[0132] In some examples, the plugs on the ends of the first board body 111 and the second board body 112 may be FFC (Flexible Flat Cable) plugs.

[0133] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0134] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A display device, characterized in that: The display device comprises: Display panel; A backlight module, located at the light incident side of the display panel, configured to provide backlight; The backlight module comprises: A flexible board having a first connecting portion; An optical element is electrically connected to the flexible board, wherein the optical element is provided with a second connection portion corresponding to the first connection portion, and the first connection portion and the second connection portion are electrically connected.

2. The display device according to claim 1, characterized in that The first connection portion of the flexible board is fixedly connected to the second connection portion on the optical element.

3. The display device according to claim 1, characterized in that The optical element comprises a light bar and a terminal connector, and the flexible board is electrically connected to the light bar through the terminal connector; Wherein, the terminal connector includes a supporting surface and a mounting portion, the supporting surface is configured to support the flexible board, the second connecting portion and the mounting portion are both arranged on the supporting surface, the mounting portion and the supporting surface are surrounded to form a limited space, one end of the flexible board can be inserted into the limited space, and the first connecting portion of the flexible board is connected to the second connecting portion of the optical element.

4. The display device according to claim 3, characterized in that The backlight module further includes a pressing plate, which is arranged corresponding to the terminal connector, and the flexible board is pressed between the pressing plate and the terminal connector.

5. The display device according to claim 4, characterized in that The pressing plate and the terminal connector are separate structures.

6. The display device according to claim 4, characterized in that The pressure plate includes a flat plate and a reinforcing plate. The reinforcing plates are respectively provided at both ends of the flat plate along the length direction of the flexible plate. An angle is formed between the flat plate and the reinforcing plate to form an opening facing the terminal connector. Part of the flexible plate and part of the terminal connector are located in the opening.

7. The display device according to claim 3, characterized in that The optical element comprises a plurality of light bars, and the plurality of light bars are arranged side by side and at intervals along the length direction of the flexible board; The mounting portion includes a first limiting portion, and along the thickness direction of the display panel, the flexible board is located between the first limiting portion and the supporting surface.

8. The display device according to claim 7, characterized in that The mounting portion further includes a second limiting portion, and along the length direction of the light bar, the two ends of the supporting surface are respectively provided with the second limiting portions, and 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; Wherein, along the length direction of the light bar, the distance between the second limiting parts is greater than or equal to the width of the flexible board; Along the length direction of the light bar, the distance between the ends of the two first limiting portions facing each other is smaller than the width of the flexible board.

9. The display device according to claim 7, characterized in that: A third limiting portion is provided on one of the flexible board and the terminal connector, and a fourth limiting portion is provided on the other of the flexible board and the terminal connector, and the third limiting portion is cooperatively connected with the fourth limiting portion.

10. A display device, characterized in that: It includes a display panel and a backlight module, wherein the backlight module is arranged on the light incident side of the display panel, and the backlight module includes a flexible board and an optical element, wherein the flexible board is provided with a first connecting portion, and the optical element is provided with a second connecting portion corresponding to the first connecting portion, and the first connecting portion and the second connecting portion are electrically conductive.

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