Supporting Frame, Backlight Module and Assembly Method, Display Screen and Electronic Device

Abstract

The present disclosure relates to a support frame, a backlight module and an assembly method thereof, a display screen and an electronic device, belonging to the technical field of liquid crystal display screens. The support frame has a lighter mass and can be applied to a liquid crystal display screen with an inner opening structure to reduce the high screen-to-body ratio and low quality of the liquid crystal display screen. The support frame is formed with an installation cavity penetrating along a set direction, and specifically includes: a frame and a protruding member. The frame is used to be connected to a light-emitting component in the backlight module. The protruding member is connected to the frame and protrudes into the installation cavity, and is used to carry the light-emitting component in the backlight module. A first light-transmitting hole is provided on the protruding member, and the axial direction of the first light-transmitting hole is parallel to the set direction.

Description

Technical Field

[0001] The present disclosure relates to the technical field of liquid crystal display screens, and in particular, to a support frame, a backlight module and an assembly method, a display screen and an electronic device. Background Art

[0002] In order to optimize the user experience, the display area of the display screen is getting larger and larger, usually by increasing the screen-to-body ratio of the display screen and increasing the size of the display screen.

[0003] For a liquid crystal display screen, the screen-to-body ratio can be increased by setting a light-transmitting hole inside the display screen. At this time, the part of the display screen corresponding to the light-transmitting opening is used to cooperate with modules such as a camera and does not display an image; the part corresponding to the periphery of the light-transmitting hole on the display screen can display an image. However, increasing the size of the liquid crystal display screen will increase the weight of the display screen, and thus increase the overall weight of the electronic device. In this way, it is not convenient for the user to hold or carry the electronic device for a long time. Summary of the Invention

[0004] The present disclosure provides a support frame, a backlight module and an assembly method, a display screen and an electronic device to solve the technical defects in the related art.

[0005] According to the support frame provided in the first aspect of the embodiments of the present disclosure, the support frame is applied to a backlight module, and the support frame is formed with an installation cavity penetrating along a set direction, including:

[0006] A frame for connecting with a light-emitting component in the backlight module; and

[0007] A protruding member connected to the frame and protruding into the installation cavity for carrying a light-emitting component in the backlight module; a first light-transmitting hole is provided on the protruding member, and the first light-transmitting hole takes the set direction as an axis.

[0008] In one embodiment, the frame includes: an inner wall facing the installation cavity, an outer wall opposite to the inner wall, and a bottom wall connecting the inner wall and the outer wall;

[0009] The protruding member includes: a connecting portion connected to the outer wall and / or the bottom wall and extending away from the frame; and

[0010] A supporting portion located below the bottom wall, connected to the connecting portion and protruding into the installation cavity.

[0011] In one embodiment, the first light-transmitting hole and a light-shielding platform are provided on the supporting portion,

[0012] The light-shielding platform has a through hole communicating with the first light-transmitting hole, and the light-shielding platform is used for sleeving the light-emitting component carried by the protruding member.

[0013] In one embodiment, the distance from the edge of the support portion to the first light-transmitting hole is greater than or equal to 2 millimeters.

[0014] In one embodiment, the frame includes:

[0015] a first section for connecting to the protruding member; and

[0016] a second section including an upper portion and a lower portion distributed along the set direction, and the upper portion protrudes into the installation cavity relative to the lower portion.

[0017] According to the backlight module provided in the second aspect of the present disclosure, the backlight module includes: a light-emitting component and the support frame provided in the first aspect above;

[0018] The light-emitting component is disposed in the installation cavity of the support frame and is connected to the frame of the support frame;

[0019] And a second light-transmitting hole is provided on the light-emitting component, and the light-emitting component is lapped on the protruding member of the support frame in such a way that the second light-transmitting hole communicates with the first light-transmitting hole in the support frame.

[0020] In one embodiment, the frame includes a bottom wall, and the protruding member includes a support portion;

[0021] The light-emitting component includes a reflector, the reflector is connected to the bottom wall of the frame and is lapped on the support portion.

[0022] In one embodiment, the reflector includes: a first part and a second part, and the edge of the first part is retracted relative to the edge of the second part;

[0023] The first part is for lapping on the support portion, and the second part is for connecting to the bottom wall of the frame.

[0024] In one embodiment, the support portion is provided with a light-shielding platform; the second light-transmitting hole is provided on the reflector, and the light-shielding platform is sleeved through the second light-transmitting hole.

[0025] In one embodiment, the frame includes a first section and a second section, and an installation notch is formed between the second section and the reflector;

[0026] The light-emitting component further includes: a light source and a flexible circuit board connected to the light source; the light source is disposed in the installation cavity, and the flexible circuit board extends from the installation notch to the outside of the support frame.

[0027] In one embodiment, the second section includes an upper portion and a lower portion, and the light source is located below the upper portion in the installation cavity.

[0028] In one embodiment, the flexible circuit board is connected to the bottom wall of the second section.

[0029] In one embodiment, the light-emitting component further includes: a light source and a flexible circuit board connected to the light source;

[0030] The light source is disposed in the installation cavity, and the flexible circuit board extends from above the support frame to the outside of the support frame.

[0031] According to the backlight module assembly method provided in the third aspect of the embodiments of the present disclosure, the method is used to assemble the backlight module provided in the second aspect above, and the method includes:

[0032] Place the reflector in the light-emitting component on the supporting portion of the protruding member;

[0033] Connect the reflector and the bottom wall of the frame.

[0034] In one embodiment, the reflector includes a second light-transmitting hole, and a light-shielding platform is provided on the supporting member; the step of placing the reflector on the supporting portion includes:

[0035] Incline and insert the reflector from the side of the installation cavity facing away from the supporting portion, and sleuth the second light-transmitting hole of the reflector on the light-shielding platform.

[0036] In one embodiment, the frame includes a first section and a second section, and the step of connecting the reflector and the bottom wall of the frame includes: connecting the reflector and the bottom wall of the first section.

[0037] In one embodiment, the light-emitting component further includes a light source and a flexible circuit board; the method further includes:

[0038] Place the light source and the flexible circuit board into the installation cavity of the support frame from the side of the support frame away from the protruding member, and extend the flexible circuit board out of the installation cavity from the installation gap formed by the second section and the reflector;

[0039] Connect the flexible circuit board and the bottom wall of the second section.

[0040] According to the display screen provided in the fourth aspect of the embodiments of the present disclosure, the display screen includes the backlight module provided in the second aspect above.

[0041] According to the electronic device provided in the fifth aspect of the embodiments of the present disclosure, the electronic device includes the display screen provided in the fourth aspect above.

[0042] The support frame, backlight module and assembly method, display screen and electronic device provided by the present disclosure at least have the following beneficial effects:

[0043] The support frame provided by the embodiments of the present disclosure is used in a backlight module. Among them, the border is used to connect the light-emitting components in the backlight module, and the protruding member is used to carry the light-emitting components to support the light-emitting components in the backlight module. A first light-transmitting hole is provided on the protruding member, so that the support frame can cooperate with the backlight module supporting the in-hole display screen, thereby meeting the requirement of high screen-to-body ratio of the display screen. Moreover, by adopting the implementation manner of the protruding member and the border, the solid structure of the support frame is significantly reduced, and thus the material used for the support frame is reduced to reduce the weight of the support frame. Accordingly, the weight of the backlight module adopting the support frame is reduced. Description of the Drawings

[0044] The drawings herein are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.

[0045] Figure 1 is a schematic structural diagram of a support frame in the related art;

[0046] Figure 2 is a three-dimensional schematic diagram of a support frame shown according to an exemplary embodiment;

[0047] Figure 3 is a top view of a support frame shown according to an exemplary embodiment;

[0048] Figures 4-1 to 4-3 is a partial structural cross-sectional view of a support frame shown according to different exemplary embodiments;

[0049] Figure 5 is a partial structural cross-sectional view of a support frame shown according to another exemplary embodiment;

[0050] Figure 6 is an exploded schematic diagram of a backlight module shown according to an exemplary embodiment;

[0051] Figure 7-1 is a top view of a backlight module shown according to an exemplary embodiment;

[0052] Figure 7-2 is a bottom view of a backlight module shown according to an exemplary embodiment;

[0053] Figure 8 is a schematic structural diagram of a light-emitting component shown according to an exemplary embodiment;

[0054] Figure 9 is a top view of the light-emitting component and the support frame after connection shown according to an exemplary embodiment;

[0055] Figure 10 is a top view of a reflector shown according to an exemplary embodiment;

[0056] Figure 11 is a cross-sectional view of a backlight module along the height direction shown according to an exemplary embodiment;

[0057] Figure 12 is a cross-sectional view of a backlight module along the height direction shown according to another exemplary embodiment;

[0058] Figure 13 is a flowchart of a method for assembling a backlight module shown according to an exemplary embodiment;

[0059] Figure 14 is a flowchart of a method for assembling a backlight module shown according to another exemplary embodiment. Detailed Description of the Invention

[0060] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0061] The terms used in the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should have the ordinary meaning as understood by those of ordinary skill in the art to which the present disclosure pertains. The terms "a" or "an" and the like as used in the specification and claims of the present disclosure do not denote a limitation of quantity but rather mean that there is at least one. Unless otherwise specified, the terms "including" or "comprising" and the like are intended to cover the elements or items listed after the word "including" or "comprising" and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and the like are not limited to physical or mechanical connections and may include electrical connections, whether direct or indirect. The singular forms "a", "the", and "said" as used in the specification and claims of the present disclosure are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to any or all possible combinations of one or more of the associated listed items.

[0062] Before presenting the solutions provided by the embodiments of the present disclosure, it should be clear that in the following description, the upper, lower, top, bottom, etc. orientations are all referenced with respect to the orientation of the display screen during use. Specifically, the side where the display screen displays an image is the "upper" or "top", and the side where the display screen is located inside the electronic device is the "lower" or "bottom".

[0063] The liquid crystal display screen includes a backlight module, a display panel, and a protection cover plate that are sequentially arranged from bottom to top. The backlight module is used to output light and serves as the light source of the liquid crystal display screen. The display panel has a number of pixel points, and each pixel point has a liquid crystal layer and a driving layer. By applying an electric field to the liquid crystal layer through the driving layer to control the flipping of the liquid crystal, the light output by the backlight module can pass through the liquid crystal layer or be blocked by the liquid crystal layer. Accordingly, the pixel points emit light or go out, and then image display is realized. The protection cover plate covers the display panel and plays a protective role.

[0064] Among them, the backlight module includes a light-emitting component for outputting light and a support frame for mounting the light-emitting component.

[0065] Figure 1 It is a schematic structural diagram of the support frame in the related art. As Figure 1 shown, the support frame includes a frame 110 and a bottom plate 120 connected to the frame 110. Among them, the frame 110 encloses a cavity, the bottom plate 120 closes one side of the cavity, and the side of the cavity opposite to the bottom plate 120 is open.

[0066] The light-emitting component is arranged in the cavity enclosed by the frame 110 and placed on the bottom plate 120. That is, the bottom plate 120 plays a role in carrying the light-emitting component. Usually, the bottom plate 120 is selected as a metal plate (such as an iron plate, an aluminum plate, etc.).

[0067] In order to increase the screen-to-body ratio of the display screen, a light-transmitting hole ([[]] Figure 1 in which 121 indicates the light-transmitting hole on the bottom plate 120) that penetrates the light guide component and the bottom plate 120 from top to bottom is provided on the backlight module. This light-transmitting hole cooperates with the front camera in the electronic device, and the part of the display screen corresponding to the outside of the light-transmitting hole can display images normally. Figure 1 In the figure, 121 indicates the light-transmitting hole on the bottom plate 120. This light-transmitting hole cooperates with the front camera in the electronic device, and the part of the display screen corresponding to the outside of the light-transmitting hole can display images normally.

[0068] Furthermore, in some embodiments, in order to balance the high screen-to-body ratio and low weight, the thickness of the substrate in the protection cover plate and / or the display panel of the liquid crystal display screen is reduced.

[0069] However, in the embodiments of the present disclosure, in order to balance the high screen-to-body ratio and low weight of the liquid crystal display screen, a different solution is provided, specifically, a support frame, a backlight module and an assembly method, a display screen, and an electronic device are provided. The following is a specific description with reference to the accompanying drawings.

[0070] Figure 2 It is a perspective schematic diagram of a support frame shown according to an exemplary embodiment, Figure 3 It is a top view of a support frame shown according to an exemplary embodiment. Figures 4-1 to 4-3 It is a partial structural cross-sectional view of a support frame shown according to different exemplary embodiments.

[0071] An embodiment of the present disclosure provides a support frame applied to a backlight module, and the support frame is specifically used to support a light-emitting component in the backlight module.

[0072] As Figure 2 shown, the support frame 200 is formed with an installation cavity 230 that penetrates along a set direction 200x. Among them, when a backlight module including the support frame 200 is adopted in a display screen, the installation cavity 230 penetrates vertically.

[0073] The support frame 200 specifically includes a frame 210, and the frame 210 is used to be connected to a light-emitting component in the backlight module. Combining Figure 3 , the frame 210 includes four side edges 210x connected end to end, thereby enclosing the installation cavity 230.

[0074] The support frame 200 further includes a protruding member 220, and the protruding member 220 is used to carry the light-emitting component. The protruding member 220 is connected to the frame 210 and protrudes into the installation cavity 230. Optionally, the protruding member 220 is connected to at least one side edge 210x of the frame 210.

[0075] Among them, the setting position of the protruding member 220 is not specifically limited. For example, the protruding member 220 is disposed at the intersection of two sides of the frame 210 and is connected to two side edges 210x of the frame 210 (as Figure 3 shown). Or, the protruding member 220 is disposed on one side of the frame 210 and is connected to one side edge 210x of the frame 210.

[0076] In one example, combining Figures 4-1 to 4-3 , the frame 210 includes an inner wall 211 facing the installation cavity (not shown in the figure), an outer wall 212 opposite to the inner wall, and a bottom wall 213 and a top wall connected to the inner wall 211 and the outer wall 212. The protruding member 220 includes a connecting portion 222 and a supporting portion 223, and the connecting portion 222 is connected to the outer wall 212 and / or the bottom wall 213 of the frame 210.

[0077] As Figure 4-1 shown, the connecting portion 222 is connected to the bottom wall 213 of the frame 210. As Figure 4-2 shown, the connecting portion 222 is connected to the outer wall 212 of the frame 210. Or, as Figure 4-3 shown, the connecting portion 222 has side walls 222a and an end face 222b connected to each other, the side wall 222a is connected to the outer wall 212 of the frame 210, and the end face is connected to the bottom wall 213 of the frame 210.

[0078] Optionally, the frame 210 is a glue frame and the protruding member 220 is a metal component. At this time, the protruding member 220 is connected to the frame 210 by an adhesive, or the protruding member 220 and the frame 210 are integrally formed by injection molding. To ensure the firm connection between the frame 210 and the protruding member 220, glue pulling holes 224 are provided on the portion of the connecting portion 222 for connecting with the frame 210. During the adhesive bonding or injection molding process, the adhesive or the resin of the injection-molded frame 210 can enter the glue pulling holes 224. Accordingly, the glue pulling holes 224 increase the connection area between the connecting portion 222 and the frame 210, and improve the connection strength between the frame 210 and the protruding member 220. Among them, the higher the density of the glue pulling holes 224, the stronger the connection stability between the protruding member 220 and the frame 210.

[0079] The connecting portion 222 extends away from the frame 210, that is, the connecting portion 222 extends downward. At this time, the supporting portion 223 connected to the connecting portion 222 can be located below the bottom wall 213. And, the supporting portion 223 also protrudes toward the installation cavity 230. In this way, the supporting portion 223 can stably carry the light-emitting component.

[0080] In the embodiment of the present disclosure, the protruding member 220 protrudes toward the installation cavity 230 and does not block the installation cavity 230. That is, the protruding member 220 forms a partial bottom plate of the support frame 200. This way significantly reduces the solid structure of the support frame, and thus reduces the material used for the support frame to reduce the weight of the support frame. Accordingly, the weight of the liquid crystal display screen using this backlight module is reduced.

[0081] In one embodiment, continue to refer to Figure 2 and a first light-transmitting hole 221 is provided on the protruding member 220, and the axis 221x of the first light-transmitting hole 221 is parallel to the set direction 200x. Among them, when the axis of the first light-transmitting hole 221 is approximately parallel to the set direction 200x (for example, the included angle between the axis 221x and the set direction 200x is less than or equal to 10°), it is also considered that the axis 221x of the first light-transmitting hole 221 is parallel to the set direction 200x.

[0082] In this way, the first light-transmitting hole 221 can cooperate with the optical module (such as a camera, an infrared emitter, etc.) provided below the support frame 200 in the electronic device, so that the optical module can receive the light passing through the first light-transmitting hole 221. Accordingly, this backlight module can cooperate with a display panel with a high screen-to-body ratio. It should also be noted that compared with the method of directly providing light-transmitting holes on the frame 210, the method of providing the first light-transmitting hole 221 on the protruding member 220 does not increase the width of the side edge 210x in the frame 210. Accordingly, the width of the black edge area of the display screen having the support frame 200 is reduced, and the screen-to-body ratio of the display screen is further improved.

[0083] Optionally, in combination withFigure 3 , a first light-transmitting hole 221 is provided on the supporting portion 223. Wherein, the distance from the first light-transmitting hole 221 to the edge of the supporting portion 223 is greater than or equal to 2 millimeters. Especially when the protruding member 220 is a metal component, in this way, shrinkage of the supporting portion 223 during stamping of the first light-transmitting hole 221 is avoided, which affects the performance of the protruding member 220.

[0084] Moreover, a light-shielding platform 225 is provided on the supporting portion 223, and the light-shielding platform 225 protrudes upward on the supporting portion 223. And, the light-shielding platform 225 has a through hole 226 communicating with the first light-transmitting hole 221. This light-shielding platform is used to sleevedly hold the light-emitting component carried on the supporting portion 223 to improve the connection stability between the light-emitting component and the supporting portion 223.

[0085] In one embodiment, the frame 210 includes a first section and a second section. Wherein, the first section is used to connect with the protruding member, and the second section is used to cooperate with the light source in the light-emitting component. Figure 5 is a partial structural cross-sectional view of the support frame shown according to another exemplary embodiment. As Figure 5 shown, the second section 210a includes an upper part and a lower part distributed along the set direction 200x. Wherein, the upper part protrudes towards the installation cavity 230 relative to the lower part. Accordingly, the second section 210a forms an inverted "L" shape. In this way, the light source can be installed below the upper part of the second section 210a. Accordingly, the second section 210 can shield the light source in the light-emitting component and play a role in protecting the light source.

[0086] Optionally, the light source in the light-emitting component is arranged along one side of the backlight module. In such a case, the second section 210a is a side edge 210x of the frame 210, and the first section is the remaining side edges 210x of the frame 210.

[0087] In summary, the support frame provided by the embodiments of the present disclosure is used in the backlight module. The frame 210 of the support frame 200 is used to connect the light-emitting component in the backlight module, and the protruding member 220 is used to carry the light-emitting component. Accordingly, the support frame 200 plays a role in installing the light-emitting component.

[0088] Moreover, the protruding member 220 in the support frame 200 protrudes towards the installation cavity 230, and at this time, the protruding member 220 does not block the installation cavity 230. In this way, the solid structure of the support frame is significantly reduced, and thus the weight of the support frame is reduced. Accordingly, the weight of the backlight module including this support frame is reduced.

[0089] In addition, a first light-transmitting hole 221 is provided on the protruding member 220, so that the support frame 200 can cooperate with the backlight module supporting an in-hole display screen, and thus meet the requirement of a high screen-to-body ratio of the display screen.

[0090] Based on the support frame provided above, an embodiment of the present disclosure further provides a backlight module. Figure 6 is an exploded schematic view of a backlight module shown according to an exemplary embodiment, Figure 7-1 and Figure 7-2 are a top view and a bottom view of the backlight module shown according to an exemplary embodiment.

[0091] As Figure 6 shown, the backlight module includes the support frame 200 provided above and a light-emitting component 300.

[0092] A second light-transmitting hole 310 penetrating up and down is provided on the light-emitting component 300. In an embodiment of the present disclosure, the light-emitting component 300 is connected to the support frame 200. Combining Figure 7-1 and Figure 7-2 , the light-emitting component 300 is disposed in the installation cavity 230 and connected to the frame 210. And the light-emitting component 300 is lapped on the protruding member 220 in such a way that the second light-transmitting hole 310 communicates with the first light-transmitting hole 221.

[0093] In this way, through the dual supporting effects of the frame 210 and the protruding member 220 on the light-emitting component 300, the stable connection between the support frame 200 and the light-emitting component 300 is ensured.

[0094] Based on the above, in an embodiment of the present disclosure, the protruding member 220 of the support frame 200 can not only support the light-emitting component 300, but also be provided with a light-transmitting hole for cooperating with the optical module, thereby meeting the requirement of a high screen-to-body ratio of the display screen. Moreover, compared with the way that the support frame 100 in the related art includes a frame 110 and a bottom plate 120, the support frame 200 provided in the embodiment of the present disclosure reduces the solid structure of the support frame 200 through the structures of the frame 210 and the protruding member 220 to reduce the weight of the backlight module. Furthermore, the weight of the liquid crystal display screen using this backlight module is reduced.

[0095] Figure 8 is a schematic structural view of a light-emitting component shown according to an exemplary embodiment. As Figure 8 shown, the light-emitting component 300 includes a reflector 320, a light guide 330 disposed on the reflector 320, a light source 340 located on the side of the light guide 330, a flexible circuit board 350 connected to the light source 340, and an optical device group (such as a diffusion sheet and a prism, etc.) disposed on the light guide 330. The second light-transmitting hole 310 penetrates the optical device group, the light guide 330, and the reflector 320 from top to bottom.

[0096] In one embodiment, the reflector 320 is used to be connected to the support frame 200 and support the light guide 330 and the optical device group, etc. in the light-emitting component 300.

[0097] Figure 9It is a top view showing the connection between a light-emitting component and a support frame according to an exemplary embodiment. As Figure 9 shown, the reflector 320 is located below the frame 210, and the reflector 320 is connected to the bottom wall of the frame 210 ( Figure 9 the bottom wall is not shown in the perspective view). Moreover, the lower surface of the reflector 320 overlaps on the support portion 223. Here, in combination with the structure of the support frame 200, since the connecting portion 222 extends downward, a space sufficient to place the reflector 320 is formed between the support portion 223 and the bottom wall 213, enabling the reflector 320 to be placed on the reflector 320 while being connected to the bottom wall of the frame 210. In this way, through the connection between the frame 210 and the reflector 320, and the connection between the protruding member 220 and the reflector 320, the connection stability between the light-emitting assembly 300 and the support frame 200 is ensured.

[0098] Moreover, when a light-shielding platform 225 is provided on the support portion 223 of the protruding member 220, the reflector 320 is sleeved on the light-shielding platform 225 through the second light-transmitting hole 310. In this way, the stable connection between the reflector 320 and the protruding member 220 is further ensured through the light-shielding platform 225.

[0099] In addition, the entire light-emitting assembly 300 is sleeved on the light-shielding platform 225 through the second light-transmitting hole 310. By means of the light-shielding platform 225, the light output by the light-emitting assembly 300 is prevented from passing through the first light-transmitting hole 221, thereby avoiding interfering with the operation of the optical module cooperating with the first light-transmitting hole 221. Optionally, the height of the light-shielding platform 225 is greater than or equal to the thickness of the light-emitting assembly 300, and a reflective coating is applied to the outer wall of the light-shielding platform 225.

[0100] Figure 10 It is a top view showing the reflector according to an exemplary embodiment. To simplify the assembly method of the reflector 320 and the support frame 200, the structure of the reflector 320 is improved in the embodiments of the present disclosure. As Figure 10 shown, the reflector 320 includes a first portion 321 and a second portion 322. Among them, the edge of the first portion 321 is retracted relative to the edge of the second portion 322, and the first portion 321 is used to overlap on the support portion 223, and the second portion 322 is used to be connected to the bottom wall of the frame. Optionally, a rubber strip 322x is provided at the edge of the second portion 322 to connect the bottom wall of the frame 210.

[0101] With the first portion 321 formed by edge retraction, after the reflector 320 overlaps on the support portion, it can be inserted below the bottom wall of the frame 210, facilitating fine adjustment of the position of the reflector 320 relative to the support frame 200 and being conducive to assembly.

[0102] In one embodiment, the frame 210 includes a first section and a second section. The first section is for connecting to the reflector 320. The second section is not connected to the reflector 320 and forms an installation notch with the reflector 320.

[0103] Figure 11 is a cross-sectional view of the backlight module along the height direction shown according to an exemplary embodiment. As Figure 11 shown, the reflector 320 does not extend below the second section 210a of the frame 210 and forms an installation notch 210b with the second section 210a. The flexible circuit board 350 extends from the installation notch 210b to the outside of the support frame. The flexible circuit board 350 is led out of the frame through the installation notch 210b and then connected to an external module. Optionally, the flexible circuit board 350 is connected to the bottom wall of the second section 210a to further enhance the connection stability between the light-emitting component and the support frame.

[0104] Moreover, the upper part of the second section 210a protrudes towards the installation cavity 230 relative to the lower part of the second section 210a. At this time, the light-emitting component 300 is in a flip-chip manner, and its light source 340 is located above the flexible circuit board 350. After the light-emitting component 300 is assembled with the support frame 200, the light source 340 is arranged in the installation cavity 230 and is located below the upper part of the second section 210a. Accordingly, the frame 210 can ensure the structural stability of the light source 340 and prevent the light source 340 from being damaged by external forces.

[0105] Figure 12 is a cross-sectional view of the backlight module along the height direction shown according to another exemplary embodiment. In Figure 12 this shown manner, the reflector 320 does not need to form an installation notch with the frame 210. The light-emitting component 300 is in a front-mounted manner, and its light source 340 is arranged below the flexible circuit board 350. After the light-emitting component 300 is assembled with the support frame 200, the light source 340 is located in the installation cavity 230, and the flexible circuit board 350 extends from above the support frame 200 to the outside of the support frame 200 to be connected to an external component.

[0106] In summary, in the backlight module provided by the embodiments of the present disclosure, by using the frame 210 and the protruding member 220 to form the support frame 200, the purpose of reducing the weight of the backlight module is achieved. The connection stability between the support frame 200 and the light-emitting component 300 is ensured by the connection manner between the frame 210 and the protruding member 220 and the reflector 320 in the light-emitting component 300. Moreover, the backlight module provided by the embodiments of the present disclosure is applicable to a liquid crystal display screen with internal openings to improve the screen-to-body ratio of the display screen.

[0107] Based on the backlight module provided by the above embodiments, the embodiments of the present disclosure provide a method for assembling a backlight module. This assembling method is specifically used for assembling the backlight module provided by the above embodiments. Figure 13is a flowchart of a method for assembling a backlight module shown according to an exemplary embodiment. As Figure 13 shown, the assembling method includes:

[0108] Step 131: Place the reflector in the light-emitting component on the supporting part of the protruding part.

[0109] Specifically, Step 131 includes: Insert the reflector obliquely from the side of the mounting cavity away from the supporting part, and sleuth the second light-transmitting hole of the reflector on the light-shielding table. Since the second part of the reflector needs to be connected to the bottom wall of the frame, at least one of the length or width of the second part of the reflector is greater than the size of the mounting cavity of the frame. Therefore, in Step 131, the reflector needs to be tilted in the axial direction of the mounting cavity to be smoothly inserted into the mounting cavity.

[0110] Step 132: Connect the reflector and the bottom wall of the frame.

[0111] Optionally, an adhesive strip is pre-set on the reflector, or an adhesive is pre-coated on the bottom wall of the frame. In Step 132, the reflector is bonded to the bottom wall of the frame by an external force. And, in the case where the frame includes a first section and a second section, Step 132 only needs to connect the reflector to the bottom wall of the first section.

[0112] Figure 14 is a flowchart of a method for assembling a backlight module shown according to another exemplary embodiment. In the case where the frame includes a first section and a second section, as Figure 14 shown, the assembling method further includes:

[0113] Step 133: Place the light source and the flexible circuit board into the mounting cavity of the support frame from above the support frame, and extend the flexible circuit board out of the mounting cavity from the mounting notch formed by the second section and the reflector.

[0114] Optionally, the light source, the flexible circuit board and the light guide are pre-connected as a whole, and in Step 133, the light source, the flexible circuit board and the light guide are all extended into the mounting cavity. Among them, adjust the position so that the light source is arranged below the upper part of the second section, and the light guide is located above the reflector.

[0115] Step 134: Connect the flexible circuit board and the bottom wall of the second section.

[0116] Optionally, an adhesive strip is pre-set on the flexible circuit board or the bottom wall of the frame, or an adhesive is applied after the flexible circuit board passes through the mounting notch to connect the flexible circuit board and the bottom wall of the second section. Further strengthen the connection stability between the light-emitting component and the support frame.

[0117] In addition, optical device groups such as diffusion sheets and prisms in the light-emitting component are sequentially installed on the light guide.

[0118] Based on the backlight module provided by the embodiments of the present disclosure, the embodiments of the present disclosure also provide a display screen and an electronic device.

[0119] The display screen includes: the above-provided backlight module and a liquid crystal display panel. The liquid crystal display panel is disposed above the backlight module. Optionally, the display screen may adopt a COF (Chip On Flim) packaging method or a COG (chip on glass) packaging method.

[0120] Due to the adoption of the backlight module provided by the embodiments of the present disclosure, the display screen can cooperate with an optical module such as a front device head and achieve a higher screen-to-body ratio. At the same time, due to the advantage of the light self-weight of the backlight module, the weight of the display screen adopting the backlight module is effectively reduced. Through experimental tests, by adopting the solution provided by the embodiments of the present disclosure, the weight of the backlight module with the same specifications is reduced by 30% to 40%, and the weight of the display screen with the same specifications is reduced by 10% to 15%.

[0121] The electronic device includes the above-provided display screen. Among them, the types of electronic devices include but are not limited to: mobile phones, tablet computers, wearable devices (such as smart bracelets, smart watches, etc.), medical devices, etc. By adopting the backlight module provided by the embodiments of the present disclosure, compared with the electronic devices with display screens of the same size in the related art, the embodiments of the present disclosure reduce the overall weight of the electronic device by reducing the weight of the display screen, which is convenient for users to hold or carry the electronic device for a long time.

[0122] After considering the specification and practicing the disclosure herein, those skilled in the art will readily conceive of other embodiments of the present disclosure. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common general knowledge or conventional technical means in the technical field not disclosed by the present disclosure. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

Claims

1. A support frame, characterized in that, Applied to a backlight module, the support frame is formed with an installation cavity penetrating along a set direction, including: A frame for connecting to a light-emitting component in the backlight module; and A protruding member connected to the frame and protruding into the installation cavity for carrying a light-emitting component in the backlight module; a first light-transmitting hole is provided on the protruding member, and the axial direction of the first light-transmitting hole is parallel to the set direction; The frame includes: A first section for connecting to the protruding member and for connecting to a reflector of the backlight module; and A second section forming an installation notch with the reflector, including an upper part and a lower part distributed along the set direction, and the upper part protrudes into the installation cavity relative to the lower part; Wherein, the second section is one side of the frame, the first section is the remaining sides of the frame except the second section, and the light source of the backlight module is arranged along one side of the backlight module and is arranged below the upper part of the second section.

2. The support frame according to claim 1, characterized in that, The frame includes: an inner wall facing the installation cavity, an outer wall opposite to the inner wall, and a bottom wall connecting the inner wall and the outer wall; The protruding member includes: a connecting portion connected to the outer wall and / or the bottom wall and extending away from the frame; and A supporting portion located below the bottom wall, connected to the connecting portion and protruding into the installation cavity.

3. The support frame according to claim 2, characterized in that, The first light-transmitting hole and a light-shielding platform are provided on the supporting portion, The light-shielding platform has a through hole communicating with the first light-transmitting hole, and the light-shielding platform is used for sleeving the light-emitting component carried by the protruding member.

4. The support frame according to claim 3, characterized in that, The distance from the edge of the supporting portion to the first light-transmitting hole is greater than or equal to 2 millimeters.

5. A backlight module, characterized in that, The backlight module includes: a light-emitting component and the support frame according to any one of claims 1 to 4; The light-emitting component is arranged in the installation cavity of the support frame and is connected to the frame of the support frame; And a second light-transmitting hole is provided on the light-emitting component, and the light-emitting component is lapped on the protruding member of the support frame in a manner that the second light-transmitting hole communicates with the first light-transmitting hole in the support frame.

6. The backlight module according to claim 5, wherein The frame includes a bottom wall, and the protruding member includes a supporting portion; The light-emitting component includes a reflector, and the reflector is connected to the bottom wall of the frame and is lapped on the supporting portion.

7. The backlight module according to claim 6, wherein, The reflector includes: a first part and a second part, and the edge of the first part is retracted relative to the edge of the second part; The first part is used for lapping on the supporting portion, and the second part is used for connecting to the bottom wall of the frame.

8. The backlight module according to claim 6, characterized in that, The supporting portion is provided with a light-shielding platform; the second light-transmitting hole is provided on the reflector, and the light-shielding platform is sleeved through the second light-transmitting hole.

9. The backlight module according to any one of claims 6 to 8, characterized in that, The frame includes a first section and a second section, and an installation notch is formed between the second section and the reflector; The light-emitting component further includes: a light source and a flexible circuit board connected to the light source; the light source is arranged in the installation cavity, and the flexible circuit board extends from the installation notch to the outside of the support frame.

10. The backlight module according to claim 9, wherein The second section includes an upper part and a lower part, and the light source is located below the upper part in the installation cavity.

11. The backlight module according to claim 9, wherein The flexible circuit board is connected to the bottom wall of the second section.

12. The backlight module according to any one of claims 6 to 8, characterized in that, The light emitting assembly further comprises: a light source and a flexible circuit board connected to the light source; The light source is arranged in the installation cavity, and the flexible circuit board extends from above the supporting frame to the outside of the supporting frame.

13. A method for assembling a backlight module, characterized in that, The method is used to assemble the backlight module according to any one of claims 6 to 12, and the method comprises: Placing the reflective member in the light-emitting assembly on the supporting portion of the protruding member; The reflector is connected to the bottom wall of the frame.

14. The method according to claim 13, wherein The reflector comprises a second light-transmitting hole, and a light-shielding platform is arranged on the support portion; and the step of placing the reflector in the light-emitting assembly on the support portion of the protruding member comprises: The reflector is obliquely inserted into the installation cavity from a side away from the support portion, and the second light-transmitting hole of the reflector is sleeved on the light-shielding platform.

15. The method according to claim 13, characterized in that The frame includes a first section and a second section, and the bottom wall connecting the reflector and the frame includes: a bottom wall connecting the reflector and the first section.

16. The method according to claim 15, wherein The light emitting assembly further includes a light source and a flexible circuit board; the method further includes: Place the light source and the flexible circuit board into the mounting cavity of the support frame from a side of the support frame away from the protruding member, and extend the flexible circuit board out of the mounting cavity from the mounting notch formed by the second section and the reflector; The flexible circuit board is connected to the bottom wall of the second section.

17. A display screen, characterized in that, The display screen comprises: the backlight module according to any one of claims 5 to 12.

18. An electronic device, characterized in that, The electronic device comprises the display screen according to claim 17.

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