Display device

Abstract

A display device (10), comprising a display panel (200) and a backlight module (100), wherein the display panel (200) is configured to display an image; and the backlight module (100) is located on a light-incident side of the display panel (200) and is configured to provide backlight. The backlight module (100) comprises a flexible board (110) and an optical element (120), wherein the flexible board (110) is provided with a first connecting portion (110a); and the optical element (120) is electrically connected to the flexible board (110), and the optical element (120) is provided with a second connecting portion (120a) corresponding to the first connecting portion (110a), the first connecting portion (110a) and the second connecting portion (120a) being electrically conducted.

Description

Display devices

[0001] This application claims priority to the Chinese patent application with application number 202420064455.9 filed on January 10, 2024; priority to the Chinese patent application with application number 202420598763.X filed on January 10, 2024; priority to the Chinese patent application with application number 202420599358.X filed on January 10, 2024; all contents of which are incorporated by reference into this application. Technical Field

[0002] The present disclosure relates to the field of display technology, and in particular to a display device. Background Art

[0003] Flat-panel displays and televisions, currently the mainstream display devices, offer advantages such as low power consumption, compact size, and low radiation. Display devices include display panels, which are non-self-luminous and therefore require a backlight module. The backlight module provides the light necessary for the display panel to display images.

[0004] In related technologies, a backlight module consists of a light bar and an adapter plate. The adapter plate is connected to multiple light bars via an adapter. Heat generated by the adapter plate and the light bars during operation can easily cause the adapter plate to expand and contract, leading to poor connection between the light bars and the adapter plate. To avoid this, the connector between the adapter plate and the light bars requires a significant dimensional margin, which in turn results in a larger adapter plate and higher costs.

[0005] Summary of the Invention

[0006] The present application provides a display device, which may include: a display panel configured to display an image; a backlight module located on a light incident side of the display panel and configured to provide backlight; the backlight module may include: a flexible board having a first connection portion; an optical element electrically connected to the flexible board, the optical element having a second connection portion corresponding to the first connection portion, the first connection portion and the second connection portion being electrically conductive.

[0007] In some embodiments of the present application, the first connecting portion of the flexible board is fixedly connected to the second connecting portion on the optical element.

[0008] In some embodiments of the present application, the optical element may include 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 may include 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.

[0009] In some embodiments of the present application, the backlight module may further include 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.

[0010] In some embodiments of the present application, the pressing plate and the terminal connector are separate structures.

[0011] In some embodiments of the present application, the pressure plate may include 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. There is an angle 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.

[0012] In some embodiments of the present application, the optical element may include 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;

[0013] The mounting portion may include a first limiting portion, and along a thickness direction of the display panel, the flexible board is located between the first limiting portion and the supporting surface.

[0014] In some embodiments of the present application, the mounting portion may further include a second limiting portion, wherein the second limiting portion is provided at both ends of the supporting surface along the length direction of the light bar, and one end of the second limiting portion is connected to the supporting surface and the other end is connected to the first limiting portion along the thickness direction of the display panel;

[0015] 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 board;

[0016] Along the length direction of the light bar, a distance between opposite ends of the two first limiting portions is smaller than a width of the flexible board.

[0017] 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.

[0018] An embodiment of the present application provides a display device, which may include a display panel and a backlight module. The backlight module is arranged on the light incident side of the display panel. The backlight module may include a flexible board and an optical element. 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. The first connecting portion and the second connecting portion are electrically conductive. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic cross-sectional view of a display device according to an embodiment of the present application;

[0020] FIG2 is a schematic diagram of an exploded structure of a display device according to an embodiment of the present application;

[0021] FIG3 is a schematic diagram of a partial main view structure of a display device according to an embodiment of the present application;

[0022] FIG4 is a schematic diagram of a partially exploded structure of a backlight module according to an embodiment of the present application;

[0023] FIG5 is a schematic diagram of a partial front view structure of a backlight module according to an embodiment of the present application;

[0024] FIG6 is a schematic diagram of a partial cross-sectional structure along the AA direction in FIG5 ;

[0025] FIG7 is a schematic diagram of a partially exploded structure of a backlight module according to an embodiment of the present application;

[0026] FIG8 is a schematic diagram of a partial cross-sectional structure along the BB direction in FIG5 ;

[0027] FIG9 is a schematic diagram of the exploded structure of FIG8 ;

[0028] FIG10 is a schematic structural diagram of a terminal connector according to an embodiment of the present application;

[0029] FIG11 is a schematic structural diagram of a terminal connector according to another embodiment of the present application;

[0030] FIG12 is an enlarged schematic diagram of point C in FIG3 .

[0031] Figure markings: 10-display device; 100-backlight module; 110-flexible board; 110a-first connecting part; 110b-fourth limiting part; 111-first plate body; 112-second plate body; 120-optical element; 120a-second connecting part; 121-light bar; 122-terminal connector; 122a-support surface; 122b-third limiting part; 122c-limiting space; 1221-installing part; 1221a-recess; 12211-first limiting part; 12212-second limiting part; 130-pressing plate; 130a-opening; 131-flat plate; 132-reinforcement plate; 140-back plate; 140a-first through hole; 140b-second through hole; 200-display panel; 300-power supply; 400-main board. DETAILED DESCRIPTION

[0032] The following will be combined with the accompanying drawings to clearly and completely describe some embodiments of the present disclosure. Obviously, the embodiments described are only some embodiments of the present disclosure, rather than all embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0033] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its other forms, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open and inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to indicate that the particular features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0034] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0035] When describing some embodiments, the expressions "coupled" and "connected" and their derivatives may be used. The term "connected" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. The term "coupled" indicates that two or more components are in direct physical or electrical contact. The term "coupled" or "communicatively coupled" may also refer to two or more components that are not in direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0036] “At least one of A, B and C” has the same meaning as “at least one of A, B or C” and both include the following combinations of A, B and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B and C.

[0037] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0038] The use of "adapted to" or "configured to" herein is intended to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0039] As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of deviation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0040] As used herein, "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within an acceptable deviation range, wherein the acceptable deviation range is as determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the specific quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism can be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity can also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality can be, for example, that the difference between the two equals is less than or equal to 5% of either one.

[0041] Display devices such as flat-panel displays and televisions can be configured to display images. For example, a liquid crystal display (LCD) device is primarily composed of a backlight module, a liquid crystal panel, and a drive circuit. As a display panel, the liquid crystal panel itself does not emit light and relies on the light source provided by the optical components in the backlight module to achieve brightness. The display principle of an LCD is to place liquid crystal between two pieces of conductive glass. The electric field between two electrodes drives the liquid crystal molecules to twist into nematic shapes, thereby controlling the transmission or shielding function of the backlight components, thereby displaying the image. If a color filter is added, color images can be displayed.

[0042] In related art, a backlight module includes light strips and an adapter plate. Each light strip can be connected to an external circuit via a separate cable, which is a simple connection method. However, each light strip is equipped with a cable, and the cables cannot be shared. This can easily lead to problems such as more overall wiring, higher impedance, and higher costs.

[0043] Therefore, an adapter plate can be connected to each light bar, and then connected to the 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 to push against the connector on the light bar in the direction away from the adapter plate, so that the connector is separated from the adapter plate. When the adapter plate returns to normal temperature, it shrinks, which can easily cause the connector 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.

[0044] Based on the above technical problems, the applicant has improved the structure of the existing display device. In this 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.

[0045] The display device provided in this application is described below with reference to the accompanying drawings and in combination with specific embodiments.

[0046] Figure 1 is a schematic diagram of a cross-sectional structure of a display device 10 provided by the present application. Figure 2 is a schematic diagram of an exploded structure of a display device 10 provided by the present application.

[0047] 1 and 2 , a 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 on a light incident side of the display panel 200 . The backlight module 100 may be configured to provide backlight to the display panel 200 .

[0048] The backlight module 100 may include a flexible board 110 and an optical element 120. The flexible board 110 may have a first connection portion 110a. The optical element 120 is electrically connected to the flexible board 110. The optical element 120 may have 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.

[0049] In the embodiment of the present application, the flexible board 110 is connected to the optical element 120 , so that the connection reliability between the flexible board 110 and the optical element 120 is not easily affected by thermal expansion and contraction.

[0050] Specifically, when the heat generated during 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 experiences, so that the first connection portion 110a can move synchronously with the deformation of the flexible board 110, and the force exerted by the flexible board 110 on the optical element 120 can cause the second connection portion 120a on the optical element 120 to move synchronously, thereby reducing the possibility of a poor connection between the interface on the optical element 120 and the flexible board 110. Similarly, when the display device 10 stops operating, the toughness of the flexible board 110 can also resist the contraction force it experiences. The first connection portion 110a can move synchronously with the deformation of the flexible board 110, and the force exerted by the flexible board 110 on the optical element 120 can cause the second connection portion 120a on the optical element 120 to move synchronously, thereby reducing the possibility of a 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 operating to allow the flexible plate 110 to cool, the flexible plate 110 is less likely to shrink due to its good flexibility, thereby causing poor contact between the flexible plate 110 and the optical element 120 .

[0051] In some examples, the first connecting portion 110a and the second connecting portion 120a can be attached to each other to achieve electrical connection between the flexible board 110 and the optical element 120. Alternatively, the first connecting portion 110a and the second connecting portion 120a can also achieve electrical connection via a conductive component. Specifically, the first connecting portion 110a and the second connecting portion 120a are both electrically connected to the conductive component. The conductive component can ensure a stable connection between the first connecting portion 110a and the second connecting portion 120a.

[0052] FIG3 is a schematic diagram of the main structure of the backlight module 100 when a user faces the light-emitting side of the display panel 200 .

[0053] In some examples, as shown in FIG2 and FIG3 , 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 dissipate heat for the optical element 120.

[0054] The optical element 120 can 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. This can reduce the phenomenon that deformation of one of the two rigid connections affects the stability of the connection between the two.

[0055] 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 as a display device or a mobile terminal, the backlight module 100 typically adopts a rectangular shape.

[0056] For example, when the display panel 200 is configured as a rectangle, referring to the direction shown in FIG2 , the display panel 200 may include a top side, a bottom side, a left side, and a right side. The top side and the bottom side of the display panel 200 are opposite to each other, and the left side and the right side are opposite to each other. The top side is connected to one end of the left side and one side of the right side, respectively, and the bottom side is connected to the other end of the left side and the other end of the right side, respectively.

[0057] In some examples, the back plate 140 may also be shaped as a rectangle.

[0058] In some examples, the display panel 200 may be a transmissive display panel 200 that 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 can 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 the displayed image.

[0059] In some possible implementations, 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.

[0060] 4 is a schematic diagram of an exploded structure of a flexible board 110 connected to an optical element 120 in an embodiment provided by the present application. In this case, no additional connector is required to connect the flexible board 110 to the optical element 120.

[0061] In some examples, as shown in FIG. 4 , the first connection portion 110 a of the flexible board 110 may be a first solder pad. The second connection portion 120 a on the optical element 120 may be a second solder pad. Along the thickness direction Z of the display panel 200, the first solder pad on the flexible board 110 and the second solder pad on the optical element 120 may be disposed opposite each other. A soldering process may be performed to securely connect the flexible board 110 and the optical element 120 to each other and provide electrical continuity.

[0062] It is understood that the fixed connection between the flexible board 110 and the optical element 120 can improve the stability of the connection between the two. In addition, the flexible board 110 can be provided with only the first solder pad. The optical element 120 can be provided with only the second solder pad. The flexible board 110 and the optical element 120 can be directly connected via the first and second solder pads, thereby saving the cost of providing the terminal connector 122.

[0063] Figure 5 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 is a schematic diagram of a partial cross-section structure along the AA direction in Figure 5. Figure 7 is a schematic diagram of a partial exploded structure of the backlight module 100 at the same viewing angle as Figure 6. Figure 8 is a schematic diagram of a partial cross-section structure along the BB direction in Figure 5. The AA direction is perpendicular to the BB direction. Figure 9 is a schematic diagram of a partial exploded structure of the backlight module 100 at the same viewing angle as Figure 8.

[0064] 5 to 9 , 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 via the terminal connector 122 .

[0065] As shown in Figures 6 and 7 , 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 enclose a confined space 122c. One end of the flexible board 110 may be inserted into the confined space 122c, and the first connection portion 110a of the flexible board 110 may be connected to the second connection portion 120a of the optical element 120.

[0066] In the embodiment of the present application, a second connection portion 120a is provided on the surface of the support surface 122a facing the flexible board 110. The mounting portion 1221 can constrain the flexible board 110 within the confining space 122c to reduce the possibility of the flexible board 110 being subjected to a large displacement caused by 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 confining 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.

[0067] The mounting portion 1221 of the embodiment of the present application can be configured to constrain the flexible board 110 from moving 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 can be movably connected to the support surface 122a, which is not limited in this application.

[0068] For example, when the flexible board 110 is placed on the support surface 122 a , the mounting portion 1221 may abut against the surface of the flexible board 110 facing away from the first connecting portion 110 a , so that the first connecting portion 110 a and the second connecting portion 120 a may fit tightly together.

[0069] In some examples, the first connection portion 110a of the flexible board 110 may be a first contact, and the second connection portion 120a of 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.

[0070] In some examples, a light panel or light bar 121 is typically used to provide backlighting for the display panel 200. In the embodiments of the present application, the light bar 121 can be used to provide backlighting for the display panel 200. It is readily understood that the area of ​​the light panel is much larger than the area of ​​the light bar 121, which can easily lead to increased costs. In the embodiments of the present application, there can be multiple light bars 121, and multiple light bars 121 can be arranged in parallel on the back panel 140 to achieve the same effect as the light panel.

[0071] In some examples, each light bar 121 may be provided with a terminal connector 122. The flexible board 110 may be provided with multiple first connection portions 110a. One end of the flexible board 110 may be sequentially inserted into the limiting spaces 122c of the terminal connectors 122 on the multiple light bars 121, so that each first connection portion 110a is electrically connected to the first connection portion 110a of the terminal connector 122 on each light bar 121 when facing each other.

[0072] In some implementations, as shown in FIG8 and FIG9 , 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 .

[0073] 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.

[0074] 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, which can increase the friction between the pressure plate 130 and the flexible board 110. The friction between the pressure plate 130 and the flexible board 110 can thereby reduce the displacement of the flexible board 110 caused by the force, thereby affecting the connection stability between the flexible board 110 and the terminal connector 122.

[0075] Specifically, referring to Figure 8, 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 of the pressure plate 130 and the flexible board 110 relative to each other 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.

[0076] 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 forces, thereby improving the connection stability between the flexible board 110 and the optical element 120.

[0077] In some examples, the pressing plate 130 and the terminal connector 122 can be integrally formed. For example, the pressing plate 130 can be movably connected to the terminal connector 122 to simplify assembly steps. Alternatively, the pressing plate 130 and the terminal connector 122 can be separate structures, where the pressing plate 130 can be tightly connected to the terminal connector 122 under the action of an external force, so that the flexible board 110 can be compressed between the pressing plate 130 and the terminal connector 122. This is not limited in this embodiment.

[0078] In some achievable embodiments, as shown in FIG. 8 , the pressing plate 130 and the terminal connector 122 in this embodiment may be separate structures.

[0079] 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 can easily lead 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 passed, the flexible board 110 can be installed and fixed between the pressure plate 130 and the terminal connector 122 through the pressure plate 130, and the first connecting portion 110a and the second connecting portion 120a are electrically conductive.

[0080] 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 when fixing the pressure plate 130 and the flexible board 110 using a welding process.

[0081] In some achievable embodiments, as shown in Figures 8 and 9 , the pressure plate 130 of an embodiment of the present application may include a flat plate 131 and a reinforcing plate 132. Along the length direction X of the flexible board 110, a reinforcing plate 132 is provided at each end of the flat plate 131. The flat plate 131 and the reinforcing plate 132 may have an angle therebetween. The flat plate 131 and the reinforcing plate 132 may form an opening 130a facing the terminal fitting 122. Part of the flexible board 110 and part of the terminal fitting 122 may be located within the opening 130a, and the first connecting portion 110a and the 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.

[0082] 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.

[0083] In some examples, the angle between the reinforcing plate 132 and the flat plate 131 may be a right angle.

[0084] In some implementations, as shown in Figures 2 and 3 , 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 stopper 12211. Along the thickness direction Z of the display panel 200, the flexible board 110 may be located between the first stopper 12211 and the support surface 122a.

[0085] 8 , along the thickness direction Z of the display panel 200, the distance between the first position-limiting portion 12211 and the supporting surface 122a can 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 position-limiting portion 12211 can prevent the flexible board 110 from moving out of the limiting space 122c along the thickness direction Z of the display panel 200, thereby positioning the flexible board 110 in the thickness direction Z of the display panel 200.

[0086] In some examples, when the distance between the first limiting portion 12211 and the support surface 122a is greater than the thickness of the flexible board 110, the distance between the first limiting portion 12211 and the support surface 122a can meet the installation tolerance of the flexible board 110 to avoid the limiting effect of the first limiting portion 12211 being invalid due to the distance between the first limiting portion 12211 and the support surface 122a being too large.

[0087] In some examples, with reference to the orientation shown in FIG3 , the light bar 121 can be positioned horizontally. The terminal connector 122 can be disposed in the middle region of the light bar 121. Multiple light bars 121 are spaced apart along a vertical direction (the lengthwise direction X of the flexible board 110). The lengthwise direction X of the flexible board 110 and the lengthwise direction Y of the light bar 121 intersect and form an angle. For example, the lengthwise direction X of the flexible board 110 and the lengthwise direction Y of the light bar 121 can be perpendicular.

[0088] FIG10 is a schematic structural diagram of a terminal connector 122 provided in this application.

[0089] In some implementations, as shown in Figures 6 and 7 , the mounting portion 1221 may further include a second stopper 12212. Along the length direction Y of the light bar 121, the second stopper 12212 may be provided at each end of the support surface 122a. Along the thickness direction Z of the display panel 200, one end of the second stopper 12212 may be connected to the support surface 122a, and the other end may be connected to the first stopper 12211.

[0090] The second limiting portions 12212 of the present embodiment can constrain the flexible board 110 from displacement along the length direction Y of the light bar 121. The distance between the second limiting portions 12212 along the length direction Y of the light bar 121 can be greater than or equal to the width of the flexible board 110. A limiting space 122c can be defined between the opposing surfaces of the two second limiting portions 12212 and the support surface 122a. The two second limiting portions 12212 can prevent the flexible board 110 from significant displacement along the length direction Y of the light bar 121.

[0091] Along the length direction Y of the light bar 121, a gap is provided between the two first stoppers 12211 to facilitate assembly and disassembly of the flexible board 110. The distance between the opposing ends of the two first stoppers 12211 can be less than the width of the flexible board 110, thereby preventing the flexible board 110 from slipping out between the two first stoppers 12211. This allows the flexible board 110 to be positioned in the thickness direction Z of the display panel 200.

[0092] 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 131 structure to connect the first limiting portion 12211 and the support surface 122a. The first limiting portion 12211 can be provided with a chamfer to prevent the sharp corners of the first limiting portion 12211 from scratching the flexible board 110 or workers during installation.

[0093] FIG11 is a schematic structural diagram of a terminal connector 122 according to another embodiment of the present application.

[0094] In some examples, as shown in FIG11 , a notch 1221a may be provided on the first position-limiting portion 12211. The notch 1221a facilitates adjustment of the installation position of the flexible board 110 to improve assembly efficiency. The notch 1221a may be provided on opposing surfaces of the two first position-limiting portions 12211 and extend toward the second position-limiting portion 12212.

[0095] In some examples, the support surface 122a may be square in shape. 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 portions 12212 may be a plate with a thick wall.

[0096] 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 .

[0097] For example, two rows of solder pins can be formed along the length direction Y of the light bar 121 to form multiple pins. For example, each row of solder pins can have two or three solder pins along the length direction X of the flexible board 110, forming four or six pins. Figures 10 and 11 show six pins. It should be noted that the number of pins is not limited to four or six.

[0098] In some implementations, as shown in Figures 6 and 10 , 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.

[0099] In the embodiment of the present application, the cooperative connection of the third limiting portion 122b and the fourth limiting portion 110b can prevent the flexible board 110 from moving 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, thereby limiting the position of the flexible board 110 on the support surface 122a. Furthermore, the cooperative connection of the third limiting portion 122b and the fourth limiting portion 110b, together with the first limiting portion 12211, can be configured to position the flexible board 110 within the limiting space 122c, thereby improving the connection reliability between the first connection portion 110a and the second connection portion 120a.

[0100] In some examples, the third limiting portion 122b can be a raised structure. The fourth limiting portion 110b can be a groove or hole structure. 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 board 110; alternatively, 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 board 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 third limiting portion 122b from displacement.

[0101] Exemplarily, the shapes and sizes of the third limiting portion 122b and the fourth limiting portion 110b may match.

[0102] FIG12 is an enlarged schematic diagram of point C in FIG3 .

[0103] In some achievable embodiments, as shown in FIG3 and FIG12 , 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 strips 121. The second board 112 may be electrically connected to the remaining portion of the light strips 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 connect to the power supply 300. The second board 112 may be provided through the second through hole 140b to connect to the power supply 300.

[0104] In some examples, the end of the first board 111 connected to the power supply 300 may be provided with 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 be provided with a plug. The second board 112 can be directly connected to the power supply 300 via the plug, which has higher connection reliability.

[0105] In some examples, the power supply 300 and the mainboard 400 may be electrically connected via a connection line.

[0106] In some examples, the plugs on the ends of the first board 111 and the second board 112 may be FFC (Flexible Flat Cable) plugs.

[0107] In some examples, there may be multiple first plates 111. When applied to a larger display device 10, multiple shorter first plates 111 can be electrically connected to the light bar 121, thereby reducing the possibility of an increase in the overall cost of the display device 10 due to the use of a longer flexible plate 110.

[0108] When there are multiple first plates 111 , the sizes of the multiple first plates 111 may not be completely the same.

[0109] Similarly, there may be multiple second plates 112. The lengths of the second plates 112 and the first plates 111 may be different. Furthermore, when there are multiple second plates 112, the sizes of the multiple second plates 112 may not be completely the same.

[0110] It should be noted that any one of the embodiments disclosed in the present disclosure can solve one or more of the above-mentioned technical problems and achieve certain invention purposes to a certain extent; multiple technical disclosures can also be combined into an overall solution to solve one or more of the above-mentioned technical problems and achieve certain invention purposes; some technical disclosures can also be selected to be combined into an overall solution, while adopting related technologies and deteriorated solutions, but the deterioration trend can be compensated by the means disclosed in this technology, and one or more of the above-mentioned technical problems can be solved to a certain extent as a whole and achieve certain invention purposes; each technical disclosure combined into a complete embodiment constitutes an organic and inseparable overall solution, which solves technical problems as a whole and achieves certain invention purposes.

[0111] Any technical disclosure in this disclosure, as well as the recombination of multiple technical disclosures, can form a complete implementation method, and can solve one or more of the above-mentioned technical problems and achieve the purpose of the invention. They all belong to the content of this disclosure and are the content that is directly and unambiguously determined based on the content of this disclosure.

[0112] Those skilled in the art will understand that the scope of the present invention is not limited to the above specific embodiments, and that certain elements of the embodiments may be modified and replaced without departing from the spirit of the present application. The scope of the present application is limited by the appended claims.

Claims

1. A display device, characterized in that, The display device includes: a display panel; a backlight module located on the light incident side of the display panel and configured to provide backlight; The backlight module includes: a flexible board provided with a first connection portion; an optical element electrically connected to the flexible board, the optical element being provided with a second connection portion corresponding to the first connection portion, and the first connection portion and the second connection portion being electrically conducted.

2. The display device according to claim 1, wherein 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 includes 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 support surface and a mounting portion, the support surface is configured to support the flexible board, the second connection portion and the mounting portion are both provided on the support surface, the mounting portion and the support surface enclose a limiting space, one end of the flexible board can pass through the limiting space, and the first connection portion of the flexible board is connected to the second connection portion of the optical element.

4. The display device according to claim 3, characterized in that, The backlight module further includes a pressing plate, the pressing plate is correspondingly arranged with 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, wherein The pressing plate and the terminal connector are of a split structure.

6. The display device according to claim 4, wherein The pressing plate includes a flat plate and a reinforcing plate. Along the length direction of the flexible board, the reinforcing plates are respectively provided at both ends of the flat plate, and an included angle is formed between the flat plate and the reinforcing plate to form an opening facing the terminal connector, and part of the flexible board and part of the terminal connector are located in the opening.

7. The display device according to claim 3, wherein The optical element includes a plurality of light bars, and the plurality of light bars are arranged side by side and spaced apart 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 support surface.

8. The display device according to claim 7, characterized in that, The mounting portion further includes a second limiting portion. Along the length direction of the light bar, the second limiting portions are respectively provided at both ends of the support surface, and along the thickness direction of the display panel, one end of the second limiting portion is connected to the support 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 portions is greater than or equal to the width of the flexible board; Along the length direction of the light bar, the distance between the opposite ends of the two first limiting portions is less than the width of the flexible board.

9. The display device according to claim 7, wherein 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. The display device according to claim 1, characterized in that, The optical element includes a terminal connector, the terminal connector has a limiting space, and part of the flexible board is located in the limiting space to enable the first connection portion and the second connection portion to be electrically conducted.

11. The display device according to claim 10, wherein The display device includes a pressing plate, the pressing plate is correspondingly arranged with the terminal connector, and the pressing plate presses part of the flexible board against the terminal connector.

12. The display device according to claim 11, wherein The pressing plate includes a flat plate and a reinforcing plate. Along the length direction of the flexible plate, the reinforcing plates are respectively arranged at both ends of the flat plate. An included angle is formed between the flat plate and the reinforcing plate to form an opening facing the terminal joint, and part of the flexible plate and part of the terminal joint are located in the opening.

13. The display device according to claim 12, characterized in that, Along the thickness direction of the display panel, the opening of the pressing plate is arranged opposite to the limiting space, and the first connecting portion and the second connecting portion are located in the opening and the limiting space.

14. The display device according to any one of claims 11 to 13, characterized in that, The pressing plate and the terminal joint are of a split structure; or, the pressing plate and the terminal joint are of an integral structure.

15. The display device according to claim 11, characterized in that, The optical element includes a light bar, and the flexible plate is electrically connected to the light bar through the terminal joint. Wherein, the terminal joint includes a supporting surface and a mounting portion. The supporting surface is configured to support the flexible plate. The second connecting portion and the mounting portion are both arranged on the supporting surface, and the mounting portion and the supporting surface enclose to form the limiting space.

16. The display device according to claim 15, wherein The mounting portion includes a first limiting portion. Along the thickness direction of the display panel, the first limiting portion is spaced from the supporting surface, and part of the flexible plate is located between the first limiting portion and the supporting surface.

17. The display device according to claim 16, wherein Along the length direction of the light bar, the mounting portion includes two spaced first limiting portions. The first limiting portion is provided with a notch, and the notch is located on the surfaces of the two first limiting portions facing each other, and the notch extends in the direction away from each other of the two first limiting portions.

18. The display device according to claim 16, characterized in that, The mounting portion further includes a second limiting portion. Along the length direction of the light bar, the second limiting portions are respectively arranged at both ends of the supporting surface. 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.

19. The display device according to claim 18, characterized in that, 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.

20. The display device according to claim 18, wherein, Along the length direction of the light bar, the distance between the opposite ends of the two first limiting portions is less than the width of the flexible plate.

21. The display device according to claim 15, wherein The optical element includes a plurality of the light bars, and the plurality of light bars are arranged side by side and spaced along the length direction of the flexible plate. The flexible plate is provided with a plurality of spaced first connecting portions. The flexible plate passes through the limiting spaces of the terminal joints of the plurality of light bars, and the first connecting portions are connected to the second connecting portions of the terminal joints in one-to-one correspondence.

22. The display device according to claim 11, wherein, The backlight module further includes a back plate. Part of the flexible plate is arranged on the side of the back plate facing the display panel, and one end of the flexible plate passes through the back plate and is connected to a power source.

23. The display device according to claim 11, characterized in that, One of the flexible plate and the terminal joint is provided with a third limiting portion, and the other of the flexible plate and the terminal joint is provided with a fourth limiting portion, and the third limiting portion is connected in cooperation with the fourth limiting portion.

24. The display device according to claim 1, characterized in that, The flexible plate includes a first plate body and a second plate body, and the first plate body and the second plate body are respectively provided with a plurality of the first connecting portions. The optical element includes a plurality of light bars and terminal connectors. The terminal connectors are arranged on the light bars. The first plate body is electrically connected to the terminal connectors on a partial number of the light bars, and the second plate body is electrically connected to the terminal connectors on a partial number of the light bars; The terminal connector is provided with a second connection part corresponding to the first connection part, and the second connection part is electrically conductive with the first connection part.

25. The display device according to claim 24, wherein It further includes a power supply. The backlight module includes a back plate. The back plate is arranged on the display panel. Along the thickness direction of the display panel, the power supply and the optical element are respectively located on both sides of the back plate. The power supply is configured to supply power to the flexible board.

26. The display device according to claim 25, wherein The backlight module further includes a back plate. A partial number of the first plate body and a partial number of the second plate body penetrate through the back plate to be electrically conductive with the power supply.

27. The display device according to claim 25, wherein, One end of the first plate body connected to the power supply is provided with a plug, and the first plate body is electrically conductive with the power supply through the plug; and / or, one end of the second plate body connected to the power supply is provided with a plug, and the second plate body is electrically conductive with the power supply through the plug.

28. The display device according to claim 26, wherein, It further includes a main board. The main board is electrically connected to the power supply and is located on the same side of the back plate. Along the length direction of the light bar, the flexible board is located between the power supply and the main board.

29. The display device according to any one of claims 24 to 28, characterized in that, The terminal connector includes a support surface and a mounting portion. The support surface is configured to support the flexible board. The second connection part and the mounting portion are both arranged on the support surface. The mounting portion and the support surface enclose a limited space. One end of the flexible board can penetrate through the limited space, and the first connection part of the flexible board is connected to the second connection part of the optical element.

30. The display device according to any one of claims 24 to 28, characterized in that, The backlight module further includes a pressing plate. The pressing plate is arranged corresponding to the terminal connector. The flexible board is pressed between the pressing plate and the terminal connector.

31. The display device according to claim 30, wherein, The pressing plate includes a flat plate and a reinforcing plate. Along the length direction of the flexible board, the two ends of the flat plate are respectively provided with the reinforcing plates. An included angle is formed between the flat plate and the reinforcing plates to form an opening facing the terminal connector. A partial number of the flexible board and a partial number of the terminal connectors are located in the opening.

32. The display device according to claim 29, wherein, The mounting portion includes a first limiting portion. Along the thickness direction of the display panel, the flexible board is located between the first limiting portion and the support surface.

33. The display device according to claim 32, wherein The mounting portion further includes a second limiting portion. Along the length direction of the light bar, the second limiting portions are respectively arranged at both ends of the support surface. Along the thickness direction of the display panel, one end of the second limiting portion is connected to the support surface, and the other end is connected to the first limiting portion.

34. The display device according to claim 33, 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 board; and / or, along the length direction of the light bar, the distance between the opposite ends of the two first limiting portions is less than the width of the flexible board.

35. The display device according to any one of claims 24 to 28, 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. The third limiting portion is cooperatively connected with the fourth limiting portion.

36. A display device, characterized in that, It includes 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 board and an optical element. The flexible board is provided with a first connection portion, and the optical element is provided with a second connection portion corresponding to the first connection portion. The first connection portion and the second connection portion are electrically connected.

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