Dual-screen backlight module and display device

Abstract

The utility model provides a kind of double-screen backlight module and display device, double-screen backlight module includes display back frame, it includes bottom plate, first side edge being set along longitudinal direction, and second side edge being set along transverse direction, bottom plate, first side edge and second side edge are formed around and form accommodating cavity;Light guide piece is set in accommodating cavity;First optical film component and second optical film component are located on light guide piece, and in transverse direction closely connect;First, second optical film component is equipped with first privacy film and second privacy film respectively, and respectively has first louver microstructure layer and second louver microstructure layer;With transverse direction as light transmission axis direction, the deflection angle of two louver microstructure layers is α and β respectively relative to light transmission axis direction in turn, and there is relational expression: β-α=90 °±10 °. Double-screen backlight module is by limiting the observation angle of first optical film component, inhibits the light interference of second optical film component, while reducing overall thickness and frame width.

Description

Technical Field

[0001] This utility model belongs to the field of display module technology, specifically relating to a dual-screen backlight module and display device. Background Technology

[0002] With the development of automobiles, the demand for in-vehicle displays has gradually increased, including basic instrument panel displays, displays for controlling in-vehicle equipment, and displays for passenger entertainment. This increasing demand has also spurred the development of the in-vehicle display industry.

[0003] In existing solutions, merging the two main screens facing the driver and passenger has become a trend. The merged screen display is more coherent and aesthetically pleasing, achieving a consistent visual experience within the vehicle.

[0004] However, when the two screens are combined, the light from the secondary screen can easily distract the driver when the front passenger is looking at it, affecting driving safety. Furthermore, existing conventional backlight modules have a metal frame for securing the module and other accessories. If a simple merging of two backlight modules is adopted, a dark area will exist in the middle of the two screens. Increasing brightness to cover this dark area could cause discomfort to occupants in low-light conditions. Moreover, the large display bezels and overall thickness prevent the screen from visually integrating into the dashboard. Utility Model Content

[0005] To address the shortcomings of the prior art, this invention provides a dual-screen backlight module. By setting a first privacy film and a second privacy film, and limiting the deflection angle of the first and second louver microstructure layers relative to the light transmission axis, the observation angle of the first optical film assembly is limited, and the light emission interference of the second optical film assembly to the first optical film assembly is suppressed. Simultaneously, components such as the light guide and optical film assembly are directly mounted on the display back panel, resulting in a thinner display device and a narrower bezel.

[0006] The technical effect to be achieved by this utility model is realized through the following technical solution:

[0007] In a first aspect, this utility model provides a dual-screen backlight module, comprising:

[0008] The display back frame includes a base plate, a first side edge arranged in a longitudinal direction, and a second side edge arranged in a transverse direction, wherein the base plate, the first side edge, and the second side edge surround to form a receiving cavity;

[0009] A light guide element is disposed within the receiving cavity; and

[0010] A first optical film assembly and a second optical film assembly are disposed on the light guide, and the first optical film assembly is closely connected to the second optical film assembly in the lateral direction;

[0011] The first optical film assembly is provided with a first privacy film, which has a first louver microstructure layer. The second optical film assembly is provided with a second privacy film, which has a second louver microstructure layer. With the transverse direction as the light transmission axis, the deflection angle of the first louver microstructure layer relative to the light transmission axis is α, and the deflection angle of the second louver microstructure layer relative to the light transmission axis is β. α and β have the following relationship: β-α=90°±10°, and -10°<α<10°.

[0012] In some implementations, the first venetian blind microstructure layer is deflected at an angle α relative to the light transmission axis by 5°, and the second venetian blind microstructure layer is deflected at an angle β relative to the light transmission axis by 95°.

[0013] In some implementations, a first positioning element is provided in the receiving cavity at both ends near either of the first side, and the first positioning element abuts against the edge of the light guide.

[0014] In some implementations, the same first positioning element abuts against two adjacent edges of the light guide element.

[0015] In some implementations, a second positioning member is provided within the receiving cavity. The second positioning member is disposed at the junction of the first optical film assembly and the second optical film assembly, and abuts against the edge of the light guide on the same side as the first positioning member.

[0016] In some implementations, the first positioning element is an "L" shaped structure and the second positioning element is an "I" shaped structure; the first positioning element and the second positioning element are fixed to the base plate and are both elastic elements.

[0017] In some implementations, the first optical film assembly extends toward either of the first sides to form a positioning portion, and a positioning groove matching the shape and position of the positioning portion is provided on the corresponding first side. When the first optical film assembly is disposed on the display back frame, the positioning portion snaps into and falls into the positioning groove.

[0018] In some implementations, the positioning part is located near the junction of the first optical film assembly and the second optical film assembly.

[0019] In some implementations, on the side closest to the first side, the light guide has a fixed boss at the junction of the two edges in the height direction, and the first optical film assembly has a hook that matches the shape and position of the fixed boss. The first optical film assembly and the light guide are fixedly installed by engaging the fixed boss and the hook.

[0020] Secondly, this utility model provides a display device, including a light-emitting component and the aforementioned dual-screen backlight module;

[0021] The light-emitting component includes a flexible circuit board and LED beads. A receiving groove is provided on the first side facing the receiving cavity. The flexible circuit board is attached to the receiving groove, and the LED beads face the edge of the light guide.

[0022] In summary, this utility model has at least the following advantages:

[0023] 1. The dual-screen backlight module provided by this utility model, by setting a first privacy film and a second privacy film, and controlling the difference between the deflection angle β of the second louver microstructure layer relative to the light transmission axis and the deflection angle α of the first louver microstructure layer relative to the light transmission axis within the range of 90°±10°, while simultaneously satisfying -10°<α<10°, achieves limitation of the observation angle of the position of the first optical film assembly and suppresses the light emission interference of the second optical film assembly on one side of the first optical film assembly.

[0024] 2. The dual-screen backlight module provided by this utility model has components such as light guides and optical film assemblies directly mounted on the display back panel. Compared with the existing solution of first fixing the backlight module bracket and then fixing it to the display back panel, its overall thickness is thinner and the display bezel is narrower, improving the overall integrity of the display device in the vehicle.

[0025] 3. The display device provided by the utility model, after adopting the above-mentioned dual-screen backlight module, provides the driver with an accurate viewing angle for the first optical film assembly, ensuring the driver's correct seating posture. Meanwhile, the second optical film assembly, without affecting the passenger's viewing comfort, also prevents the display of the second optical film assembly from interfering with the driver's observation and attention, thus improving driving safety. Attached Figure Description

[0026] Figure 1 This is an exploded view of the dual-screen backlight module in Example 1.

[0027] Figure 2 This is a schematic diagram showing the deflection angle between the first louver microstructure layer and the light transmission axis in the embodiment.

[0028] Figure 3 This is a schematic diagram showing the deflection angle between the second louver microstructure layer and the light transmission axis in the embodiment.

[0029] Figure 4 This is an exploded view of the embodiment with only the light guide installed.

[0030] Figure 5 for Figure 4 Enlarged views of points A and B in the middle.

[0031] Figure 6 This is an exploded view of the dual-screen backlight module in Example 2.

[0032] Figure 7 for Figure 6 Enlarged views of points C and D in the middle.

[0033] Figure 8 for Figure 6 A magnified view of a portion of point E in the middle.

[0034] Figure 9 This is an exploded view of the display device in Example 3.

[0035] Marked in the image:

[0036] 100. Dual-screen backlight module;

[0037] 200. Display device; 201. Screen;

[0038] 300. Light-emitting components; 301. Flexible circuit boards; 302. LED beads;

[0039] 1. Display back frame; 11. Base plate; 12. First side; 121. Positioning groove; 122. Receiving groove; 123. Lug limiting groove; 13. Second side; 14. Receiving cavity.

[0040] 2. Light guide component; 21. Fixing boss;

[0041] 3. First optical film assembly; 31. First privacy film; 311. First venetian blind microstructure layer; 32. Positioning part; 33. Hanging ear; 34. Limiting lug; 35. First brightness enhancement film; 36. Second brightness enhancement film; 37. Light diffusion film.

[0042] 4. Second optical film assembly; 41. Second privacy film; 411. Second venetian blind microstructure layer;

[0043] 5. First positioning component;

[0044] 6. Second positioning component;

[0045] X represents the horizontal direction; Y represents the vertical direction; and Z represents the vertical direction. Detailed Implementation

[0046] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings and specific embodiments. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0047] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0048] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0050] For ease of understanding, it should be noted that the X-axis in the graph represents the horizontal direction, the Y-axis represents the vertical direction, and the Z-axis represents the vertical direction.

[0051] Example 1:

[0052] Please see Figure 1 This utility model provides a dual-screen backlight module 100, mainly installed on the center console dashboard of a car driver's seat. It includes a display back frame 1, a light guide 2, a first optical film assembly 3, and a second optical film assembly 4. The light guide 2, the first optical film assembly 3, and the second optical film assembly 4 are installed and fixed to the display back frame 1, and then the display back frame 1 is fixed inside the center console dashboard, thereby achieving different light emission effects in the two display areas of the center console dashboard.

[0053] Specifically, the display back frame 1 includes a base plate 11, a first side 12 arranged along the longitudinal direction Y, and a second side 13 arranged along the transverse direction X. The base plate 11, the first side 12, and the second side 13 surround to form a receiving cavity 14. A light guide 2 is disposed within the receiving cavity 14. A first optical film assembly 3 and a second optical film assembly 4 are disposed on the light guide 2, and the first optical film assembly 3 is closely connected to the second optical film assembly 4 in the transverse direction X. In use, the first optical film assembly 3 faces the driver's seat side, while the second optical film assembly 4 faces the passenger seat side.

[0054] For more specific details, please see Figure 1 Based on this, refer to Figures 2-3 The first optical film assembly 3 is provided with a first privacy film 31, which has a first venetian blind microstructure layer 311. The second optical film assembly 4 is provided with a second privacy film 41, which has a second venetian blind microstructure layer 411. With the transverse X direction as the light transmission axis, the deflection angle of the first venetian blind microstructure layer 311 relative to the light transmission axis is α, and the deflection angle of the second venetian blind microstructure layer 411 relative to the light transmission axis is β. α and β have the relationship: β-α=90°±10°, and -10°<α<10°.

[0055] It should be noted that, considering the characteristics of the venetian blind's microstructure, the value of β is between -180° and 180°. α and β satisfy the relationship β-α=90°±10°, which can be understood as the first venetian blind microstructure layer 311 and the second venetian blind microstructure layer 411 being in a vertical or nearly vertical position. When α satisfies -10°<α<10°, the first venetian blind microstructure layer 311 is in a horizontal or nearly horizontal position relative to the light transmission axis.

[0056] When the driver is looking at one side of the first optical film assembly 3, the first louver microstructure layer 311 provides a vertical anti-peeping effect in the longitudinal Y direction, limiting the driver's viewing angle in the longitudinal Y direction and ensuring that the driver's line of sight is within the designed ideal range. Meanwhile, the second optical film assembly 4 provides a horizontal anti-peeping effect in the lateral X direction, reducing the light interference of the second optical film assembly 4 on the first optical film assembly 3 and reducing the driver's attention to the side of the second optical film assembly 4.

[0057] By directly mounting the light guide 2, the first optical film assembly 3, and the second optical film assembly 4 onto the display back frame 1, compared to the existing method of first fixing all components of the backlight module into a traditional backlight module bracket and then inserting the two backlight module brackets containing the light guide 2, optical film assemblies, and other components into the display back frame 1, the overall thickness of the display device is thinner and the bezel is narrower. This allows for better integration of the display device into the center console, improving its overall integration with the vehicle interior.

[0058] In this embodiment, the vehicle is left-hand drive, so the first optical film assembly 3 is located on the left side in the lateral direction X. For right-hand drive vehicles, the first optical film assembly 3 should be located on the right side.

[0059] To achieve better light emission and improve the viewing experience for both the driver and front passenger, in a further embodiment, the first louver microstructure layer 311 is deflected at an angle α of 5° relative to the light transmission axis, and the second louver microstructure layer 411 is deflected at an angle β of 95° relative to the light transmission axis. This ensures that the display of the first optical film assembly 3 can be clearly seen from a suitable angle by both the driver and the front passenger. The second optical film assembly 4, while suppressing light emission interference to the first optical film assembly 3, also provides a good viewing experience for the front passenger, even on bumpy roads.

[0060] As a crucial component of the backlight assembly, the light guide 2's position determines the specific locations of the light-emitting element and the optical film assembly. For dual-screen displays, effectively assembling the two light guides 2 within the display back frame 1 is particularly important. Therefore, in some embodiments, a first positioning member 5 is provided within the receiving cavity 14 near both ends of either first side 12, and the first positioning member 5 abuts against the edge of the light guide 2. Figure 1 Based on this, refer to Figure 4 The two light guides 2 obtain basic positioning within the receiving cavity 14 through the two first positioning members 5 set at both ends of the first side 12.

[0061] Furthermore, the same first positioning element 5 abuts against two adjacent edges of the light guide element 2, that is, the first positioning element 5 abuts against the two edges of one corner of the light guide element 2. This enables rapid positioning of the horizontal X and vertical Y positions of each light guide element 2. However, since the display screen has a large area, if the positioning accuracy is guaranteed solely by the first positioning element 5, a larger first positioning element 5 would be required, which would increase the proportion of the display edge. To reduce the bezel width, in a further embodiment, a second positioning element 6 is provided in the receiving cavity 14. The second positioning element 6 is located at the junction of the first optical film assembly 3 and the second optical film assembly 4, and abuts against the edge of the light guide element 2 on the same side as the first positioning element 5.

[0062] The light guide 2 is positioned by the first positioning component 5 and the second positioning component 6. During the assembly process, the light guide 2 can be quickly positioned in the display back frame 1. Even if the display area of ​​the display screen is increased, only the position of the second positioning component 6 needs to be adjusted to achieve the positioning purpose of the larger light guide 2.

[0063] It should be noted that, since the second positioning member 6 is located at the junction of the first optical film assembly 3 and the second optical film assembly 4, if the second positioning member 6 is embedded at the junction, a thin, elongated dark slit can easily form at the junction of the first optical film assembly 3 and the second optical film assembly 4, affecting the continuity of light output. Therefore, the second positioning member 6 only needs to abut against the edge of the light guide 2 near the first side 12 to achieve positioning, and does not need to abut against other edges of the light guide 2. In this embodiment, two second positioning members 6 are used to abut against the light guides on both sides respectively, ensuring that the installation and positioning of the two light guides 2 do not interfere with each other.

[0064] like Figure 5 As shown, for ease of manufacturing, the first positioning element 5 has an "L" shape, and the second positioning element 6 has an "I" shape. Of course, the first positioning element 5 can also be other shapes, such as a "V" shape. In some embodiments, the first positioning element 5 and the second positioning element 6 are fixed to the base plate 11 by adhesive bonding, and both the first positioning element 5 and the second positioning element 6 are made of elastic materials such as silicone or soft rubber. Both the first positioning element 5 and the second positioning element 6 are elastic elements made of elastic materials, which can provide force buffering or heat deformation buffering for the light guide element 2, preventing damage to the light guide element 2.

[0065] In summary, the dual-screen backlight module provided by this utility model, by setting a first privacy film and a second privacy film, and controlling the difference between the deflection angle β of the second louver microstructure layer relative to the light transmission axis and the deflection angle α of the first louver microstructure layer relative to the light transmission axis within the range of 90°±10°, while simultaneously satisfying -10°<α<10°, achieves limitation of the observation angle of the position of the first optical film assembly and suppresses the light emission interference of the second optical film assembly on one side of the first optical film assembly.

[0066] Secondly, components such as light guides and optical film assemblies are directly mounted on the display back panel. Compared to the existing solution of first fixing them to the backlight module bracket and then to the display back panel, the overall thickness is thinner and the display bezel is narrower, improving the overall integrity of the display device in the vehicle.

[0067] Example 2:

[0068] Please Figures 1-5 Based on this, refer to Figures 6-8 This embodiment further optimizes upon embodiment 1, providing a dual-screen backlight module 100. The difference lies in that the first optical film assembly 3 extends toward either first side 12 to form a positioning part 32, and the corresponding first side 12 is provided with a positioning groove 121 that matches the shape and position of the positioning part 32. When the first optical film assembly 3 is disposed on the display back frame 1, the positioning part 32 snaps into and falls into the positioning groove 121.

[0069] In this embodiment, the positioning groove 121 is located on the first side 12 away from the first positioning member 5. During production, the display back frame 1 can be manufactured using processes such as metal die casting or injection molding, and the positioning groove 121 is formed together in the first side 12. The first optical film assembly 3 is snapped into the positioning groove 121 by the positioning part 32 to achieve rapid positioning within the receiving cavity 14, meeting the requirements for rapid assembly. Similarly, the second optical film assembly 4 is also provided with a positioning part 32 for rapid positioning.

[0070] Furthermore, the positioning part 32 is located near the junction of the first optical film assembly 3 and the second optical film assembly 4. Therefore, in the display back frame 1, only the positioning groove 121 needs to be positioned in the middle of the entire first side 12 to meet the installation and positioning requirements of the two sets of optical film assemblies, simplifying the overall structure. At the same time, the positioning parts 32 of the two sets of optical film assemblies also form a mirror-symmetrical layout in the receiving cavity 14, thus reducing the likelihood of misinstallation during the installation of the two sets of optical film assemblies.

[0071] In other embodiments, to improve the secure fixing of the first optical film assembly 3 and the light guide 2, a fixing boss 21 is provided on the side near the first side 12 at the junction of the two edges in the height direction Z. The first optical film assembly 3 is provided with a hook 33 that matches the shape and position of the fixing boss 21. The first optical film assembly 3 and the light guide 2 are fixedly installed by snapping together with the fixing boss 21 and the hook 33, just as... Figure 8 As shown.

[0072] When the first optical film assembly 3 is placed and installed above the light guide 2, it is engaged by the positioning part 32 and falls into the positioning groove 121 of the first side 12, thus achieving accurate positioning. During subsequent installation or use, the first optical film assembly 3 may shift from the light guide 2 due to external force or vibration, affecting the display effect. Two fixing protrusions 21 are provided on the light guide 2, and the hooks 33 of the first optical film assembly 3 are then engaged with the fixing protrusions 21 at both ends, completely limiting and fixing the first optical film assembly 3 and the light guide 2 in the horizontal (X) and vertical (Y) directions. The second optical film assembly 4 also has hooks 33 to achieve its limiting and fixing with the light guide 2, and the method is the same as that of the first optical film assembly 3, which will not be described in detail here.

[0073] In addition to the aforementioned positioning part 32, to further improve the positioning of the first optical film assembly 3 and the second optical film assembly 4 in the receiving cavity 14, limiting lugs 34 are also provided on the side opposite to the positioning part 32. On the side opposite to the limiting lugs 34, a lug limiting groove 123 is provided on the side of the first side 12 facing the receiving cavity 14. During installation, the limiting lugs 34 are first inserted into the lug limiting groove 123, and then engaged by the positioning part 32 and fall into the positioning groove 121, completing the final positioning of the first optical film assembly 3 and the second optical film assembly 4 in the receiving cavity 14. The hanging ears 33 of the first optical film assembly 3 and the second optical film assembly 4 will also simultaneously fall into the fixing boss 21, thereby completing the precise and rapid installation of the first optical film assembly 3 and the second optical film assembly 4 on the corresponding light guide 2.

[0074] In addition, in this embodiment, besides the first privacy film 31, the first optical film assembly 3 is also provided with a first brightness enhancement film 35, a second brightness enhancement film 36, and a light-diffusing film 37 in sequence from the first privacy film 31 toward the light guide 2. The light emitted from the light guide 2 is processed by the light-diffusing film 37 and the two brightness enhancement films to ensure that the light emitted onto the screen 201 is uniform and soft. The second optical film assembly 4 has the same optical film configuration as the first optical film assembly 3, and will not be described further here.

[0075] The dual-screen backlight module provided in this embodiment not only allows for rapid positioning and installation of the light guide components, but also enables the first and second optical film assemblies to achieve precise installation without the need for a traditional backlight module bracket.

[0076] Example 3:

[0077] Please Figures 1-8 Based on the above Figure 9 This embodiment provides a display device 200, including a light-emitting component 300 and a dual-screen backlight module 100 as described in either Embodiment 1 or Embodiment 2. The light-emitting component 300 includes a flexible circuit board 301 and LED beads 302. A receiving groove 122 is provided on the first side 12 facing the receiving cavity 14. The flexible circuit board 301 is attached to the receiving groove 122, and the LED beads 302 face the edge of the light guide 2. The LED beads 302 are disposed at the edge of the light guide 2, achieving a light-gathering effect through side emission. Compared to the position disposed between the base plate 11 and the light guide 2, the overall thickness of the display device 200 is thinner.

[0078] By employing the dual-screen backlight module 100 described in Embodiment 1 or Embodiment 2, the screen 201 on one side of the first optical film assembly 3 restricts the driver's viewing angle, preventing the driver's seating position from being too high or too low, which could affect position judgment during driving. Meanwhile, the second optical film assembly 4, without affecting the passenger's viewing comfort, also prevents its display from interfering with the driver's observation and attention, thus improving driving safety.

[0079] The above description is merely an example and illustration of the structure of this utility model, and while the description is quite specific and detailed, it should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these obvious substitutions all fall within the protection scope of this utility model.

Claims

1. A dual-screen backlight module, characterized in that, include: The display back frame (1) includes a base plate (11), a first side (12) arranged in the longitudinal direction (Y), and a second side (13) arranged in the transverse direction (X), wherein the base plate (11), the first side (12) and the second side (13) surround to form a receiving cavity (14); A light guide (2) is disposed within the receiving cavity (14); and The first optical film assembly (3) and the second optical film assembly (4) are disposed on the light guide (2), and the first optical film assembly (3) is closely connected to the second optical film assembly (4) in the transverse (X) direction; The first optical film assembly (3) is provided with a first privacy film (31), which has a first louver microstructure layer (311). The second optical film assembly (4) is provided with a second privacy film (41), which has a second louver microstructure layer (411). With the transverse (X) direction as the light transmission axis, the deflection angle of the first louver microstructure layer (311) relative to the light transmission axis is α, and the deflection angle of the second louver microstructure layer (411) relative to the light transmission axis is β. α and β have the following relationship: β-α=90°±10°, and -10°<α<10°.

2. The dual-screen backlight module according to claim 1, characterized in that, The first louver microstructure layer (311) has a deflection angle α of 5° relative to the light transmission axis, and the second louver microstructure layer (411) has a deflection angle β of 95° relative to the light transmission axis.

3. The dual-screen backlight module according to claim 1, characterized in that, At either end of either of the first side (12), a first positioning member (5) is provided in the receiving cavity (14), and the first positioning member (5) abuts against the edge of the light guide (2).

4. The dual-screen backlight module according to claim 3, characterized in that, The first positioning element (5) abuts against two adjacent edges of the light guide element (2).

5. The dual-screen backlight module according to claim 4, characterized in that, The cavity (14) is provided with a second positioning member (6), which is located at the junction of the first optical film assembly (3) and the second optical film assembly (4), and abuts against the edge of the light guide member (2) on the same side as the first positioning member (5).

6. The dual-screen backlight module according to claim 5, characterized in that, The first positioning component (5) has an "L" shaped structure, and the second positioning component (6) has an "I" shaped structure; the first positioning component (5) and the second positioning component (6) are fixed on the base plate (11) and are both elastic components.

7. The dual-screen backlight module according to claim 1, characterized in that, The first optical film assembly (3) extends toward either of the first side (12) to form a positioning part (32). The corresponding first side (12) is provided with a positioning groove (121) that matches the shape and position of the positioning part (32). When the first optical film assembly (3) is disposed on the display back frame (1), the positioning part (32) snaps into and falls into the positioning groove (121).

8. The dual-screen backlight module according to claim 7, characterized in that, The positioning part (32) is disposed near the junction of the first optical film assembly (3) and the second optical film assembly (4).

9. The dual-screen backlight module according to claim 1, characterized in that, On the side near the first side (12), the light guide (2) has a fixed boss (21) at the junction of the two edges in the height direction (Z). The first optical film assembly (3) has a hook (33) that matches the shape and position of the fixed boss (21). The first optical film assembly (3) and the light guide (2) are fixedly installed by snapping together with the fixed boss (21) and the hook (33).

10. A display device, characterized in that, It includes a light-emitting component (300) and a dual-screen backlight module (100) as described in claims 1-9; The light-emitting component (300) includes a flexible circuit board (301) and LED beads (302). A receiving groove (122) is provided on the first side (12) facing the receiving cavity (14). The flexible circuit board (301) is attached to the receiving groove (122), and the LED beads (302) face the edge of the light guide (2).

Images