Curved backlight module and display device

Abstract

A curved backlight module includes a frame unit (2), a light source (L), and diffuser plates (3, 5, 7). The frame unit (2) includes a back frame (21, 41, 61), curvature fixing members (22, 42, 62) attached to the back frame (21, 41, 61), and at least one first positioning structure (23, 43, 63), the first positioning structure (23, 43, 63) being disposed on one of the back frame (21, 41, 61) and the curvature fixing member (22, 42, 62). The curvature fixing member (22, 42, 62) presses against the diffuser plate (3, 5, 7) such that at least a portion of the diffuser plate (3, 5, 7) forms the same curvature as the curvature fixing member (22, 42, 62). The diffuser plate (3, 5, 7) has at least one second positioning structure (31, 51, 71). The first positioning structure (23, 43, 63) of the frame unit (2) is combined with the second positioning structure (31, 51, 71) of the diffuser plate (3, 5, 7) to limit the diffuser plate (3, 5, 7). The curvature fixing member (22, 42, 62) stably maintains the curvature of the diffuser plate (3, 5, 7) to improve the overall structural stability and optical quality.

Description

Technical Field

[0001] This invention relates to backlight modules, and more particularly to curved backlight modules with narrow bezels, and display devices including the curved backlight modules. Background Technology

[0002] Traditional direct-lit backlight modules typically use spacers or positioning blocks to fix the diffuser plate and optical film to the top and left / right sides for positioning. However, as the requirement for narrow bezels has limited the structural space around the backlight module, the structure or size of the aforementioned spacers or positioning blocks can no longer meet the current space design requirements, preventing further breakthroughs in narrow bezel architecture.

[0003] Furthermore, in curved backlight modules, controlling the molding precision of curved diffusers is difficult and the mass production cost is high. Therefore, currently used diffusers are still mainly flat designs. However, after flat diffusers are assembled into curved backlight modules, the structural characteristics of the diffuser itself will generate a lot of springback stress, causing the diffuser to spring back and make the curved section structurally unstable. Moreover, the pressure of the diaphragm after the diffuser springs back will also affect the optical quality. Summary of the Invention

[0004] Therefore, the purpose of this invention is to provide a curved backlight module that can achieve a narrow bezel effect.

[0005] The present invention discloses a curved backlight module comprising a frame unit, a light source, and a diffuser plate. The frame unit includes a back frame, a curvature fixing member coupled to the back frame, and at least one first positioning structure disposed on either the back frame or the curvature fixing member. The light source is supported on the back frame. The diffuser plate is supported on the back frame and located on the light-emitting side of the light source. The curvature fixing member presses against the diffuser plate such that at least a portion of the diffuser plate forms the same curvature as the curvature fixing member. The diffuser plate has at least one second positioning structure, and the at least one first positioning structure of the frame unit is coupled to the at least one second positioning structure of the diffuser plate to limit the position of the diffuser plate.

[0006] Another technical aspect of the present invention is that the back frame has a plate portion for supporting the light source and a side wall portion disposed on the periphery of the plate portion for supporting the diffuser plate. The curvature fixing member has a body portion disposed on the outer side of the side wall portion of the back frame and at least one pressing portion extending from the body portion and pressing the diffuser plate against the top edge of the side wall portion.

[0007] Another technical aspect of the present invention is that the at least one second positioning structure of the diffuser plate presents a groove shape that is recessed inward from the edge, and the at least one first positioning structure is a protrusion structure located on the body part or pressing part of the curvature fixing member and protruding towards the diffuser plate, and extends into the at least one second positioning structure.

[0008] Another technical aspect of the present invention is that the curvature fixing member has a recessed portion, the surface of which is not higher than the surface of the diffuser plate or is coplanar with the surface of the diffuser plate, and the backlight module further includes a diaphragm unit stacked on the diffuser plate, the diaphragm unit having a positioning portion extending into the recessed portion.

[0009] Another technical aspect of the present invention is that the number of the first positioning structures is one, and it corresponds to the central position of the curved section of the back frame.

[0010] Another technical aspect of the present invention is that the at least one second positioning structure of the diffuser plate presents a groove shape that is recessed inward from the edge, and the at least one first positioning structure is a protrusion structure located on the side wall of the back frame and protruding toward the diffuser plate, and extends into the at least one second positioning structure.

[0011] Another technical aspect of the present invention is that the pressing portion of the curvature fixing member has two layers of sheet material spaced apart from each other, the at least one first positioning structure is disposed between the two layers of sheet material and is in the form of a protrusion, the at least one second positioning structure of the diffuser plate is in the form of a groove recessed from the edge inward, the edge of the diffuser plate extends between the two layers of sheet material of the curvature fixing member, and the at least one first positioning structure extends into the at least one second positioning structure.

[0012] Another technical aspect of the present invention is that the pressing portion of the curvature fixing member extends in a direction away from the main body portion, and the width of the pressing portion overlapping the diffuser plate in the extending direction is greater than the gap width between the diffuser plate and the side wall portion of the back frame.

[0013] Another technical aspect of the present invention is that the back frame has a plate portion for supporting the light source and a side wall portion disposed on the periphery of the plate portion for supporting the diffuser plate. The curvature fixing member has an upper frame segment corresponding to the top edge of the side wall portion and a lower frame segment corresponding to the bottom edge of the side wall portion. The at least one first positioning structure is connected to the center position of the upper frame segment and the lower frame segment. The at least one second positioning structure of the diffuser plate presents a groove shape that is recessed inward from the edge. The side wall portion of the back frame has at least one locking groove corresponding to the at least one second positioning structure. The at least one first positioning structure is embedded in the at least one second positioning structure and the at least one locking groove.

[0014] Another technical aspect of the present invention is that the curvature fixing member also has two reinforcing sections connected to the two ends of the upper frame section and the lower frame section respectively, the side wall portion of the back frame also has two clearance grooves located on both sides of the at least one locking groove, the diffuser plate also has two auxiliary positioning structures located on both sides of the second positioning structure and corresponding to the two clearance grooves, and the two reinforcing sections of the curvature fixing member are respectively housed in the two clearance grooves and the two auxiliary positioning structures.

[0015] Another technical aspect of this invention is that the first positioning structure has a first structural width, the reinforcing section of the curved fixing member has a second structural width, the locking groove of the back frame has a first notch width, and the clearance groove of the back frame has a second notch width. The difference between the first notch width and the first structural width is less than the difference between the second notch width and the second structural width. Furthermore, the second positioning structure of the diffuser plate has a third notch width, and the auxiliary positioning structure of the diffuser plate has a fourth notch width. The difference between the third notch width and the first structural width is less than the difference between the fourth notch width and the second structural width.

[0016] Another object of the present invention is to provide a display device comprising the aforementioned backlight module and a display panel disposed on the backlight module.

[0017] The advantage of this invention is that the first positioning structure of the frame unit and the second positioning structure of the diffuser plate cooperate with each other to achieve the function of positioning the diffuser plate and simplify the positioning elements. The curvature fixing member stably maintains the curvature of the diffuser plate, thereby improving the overall structural stability and optical quality. Attached Figure Description

[0018] Figure 1 This is an exploded perspective view of the first preferred embodiment of the curved backlight module of the present invention;

[0019] Figure 2 This is supplementary explanation. Figure 1 A three-dimensional image;

[0020] Figure 3 This is an explanation Figure 1 A three-dimensional cross-sectional view showing the relative positions of the assembled components;

[0021] Figure 4 This is an explanation Figure 3 A three-dimensional cross-sectional view of the structure after the diaphragm unit has been placed;

[0022] Figure 5 This is an exploded perspective view of a preferred embodiment of the display device of the present invention;

[0023] Figure 6 This is an exploded perspective view of the second preferred embodiment of the curved backlight module of the present invention;

[0024] Figure 7 This is an explanation Figure 6 A side view sectional view of the combined state;

[0025] Figure 8 This is an exploded perspective view of a variation of the second preferred embodiment;

[0026] Figure 9 This is an explanation Figure 8 An exploded three-dimensional view of the combination of the curvature fixing component and the diffuser plate.

[0027] Figure 10 This is an exploded perspective view of the third preferred embodiment of the curved backlight module of the present invention; and

[0028] Figure 11 This is an explanation Figure 10 A side view of the combined state; and

[0029] Figure 12 This is an auxiliary explanation from another perspective. Figure 10 Side view. Detailed Implementation

[0030] The relevant technical content of this invention will be clearly presented in the following detailed description of preferred embodiments with reference to the accompanying drawings. Before the detailed description, it should be noted that similar elements are designated by the same reference numerals.

[0031] See Figure 1 and Figure 2 This is a first preferred embodiment of the curved backlight module of the present invention, which includes a frame unit 2, a diffuser plate 3, a light source L, and a diaphragm unit M.

[0032] The frame unit 2 includes a back frame 21, a curved fastener 22 attached to the back frame 21, and a first positioning structure 23. The back frame 21 has a plate portion 211 and a side wall portion 212 disposed around the periphery of the plate portion 211. The light source L is supported on the plate portion 211, and the diffuser plate 3 is supported on the side wall portion 212 and is located on the light-emitting side of the light source L.

[0033] The curvature fixing member 22 has a body portion 221, a pressing portion 222 extending from the body portion 221, and a recessed portion 223 located on the pressing portion 222. In this embodiment, the first positioning structure 23 is disposed on the pressing portion 222 of the curvature fixing member 22, which corresponds to the central position of the curved section of the back frame 21, and is a protrusion structure protruding towards the diffuser plate 3, while the position of the recessed portion 223 corresponds to the first positioning structure 23. In addition, the diffuser plate 3 has a second positioning structure 31, which is a groove-shaped recess that is recessed inward from the edge. More specifically, when the first positioning structure 23 of the curvature fixing member 22 and the second positioning structure 31 of the diffuser plate 3 are assembled and positioned to each other, the second positioning structure 31 of the diffuser plate 3 can be used as a positioning point, and the two sides of the diffuser plate 3 relative to the second positioning structure 31 can naturally conform to the structural extension of the pressing portion 222 of the curvature fixing member 22 to form a curved shape.

[0034] When assembling the curved backlight module, the diffuser plate 3 is first placed on the side wall 212 of the back frame 21, and then the curvature fixing piece 22 is attached to the diffuser plate 3. More specifically, as... Figure 3 As shown, when the curvature fixing member 22 is combined with the diffuser plate 3, the first positioning structure 23 located on the curvature fixing member 22 extends into the second positioning structure 31 of the diffuser plate 3, thereby laterally limiting the diffuser plate 3. After the curvature fixing member 22 is combined with the diffuser plate 3, the body portion 221 of the curvature fixing member 22 abuts against the outer side of the side wall portion 212 of the back frame 21, and the pressing portion 222 of the curvature fixing member 22 presses the diffuser plate 3 against the top edge of the side wall portion 212, so that the pressed portion of the diffuser plate 3 forms the same curvature as the curvature fixing member 22. Next, the curvature fixing member 22 is combined with the back frame 21. For example, it can be combined by screwing, riveting, snapping, or gluing, but is not limited to the methods listed above. After the curvature fixing member 22 and the diffuser plate 3 are combined, it can be seen that the surface of the recessed portion 223 is not higher than the surface of the diffuser plate 3, or is coplanar with the surface of the diffuser plate 3. Then as Figure 1 and Figure 4 As shown, the diaphragm unit M is placed on the diffuser plate 3. The diaphragm unit M has a positioning part M0, which is a lug-shaped structure that extends into the recess 223 of the curvature fixing member 22, thereby achieving the function of positioning the diaphragm unit M.

[0035] See Figure 3 The pressing portion 222 of the curvature fixing member 22 extends in a direction away from the main body portion 221, and the width of the pressing portion 222 overlapping with the diffuser plate 3 in the extending direction is greater than the gap width between the diffuser plate 3 and the side wall portion 212 of the back frame 21. For example, the gap width may be a gap that occurs between the diffuser plate 3 and the side wall portion 212 due to manufacturing tolerances, assembly tolerances, or thermal expansion and contraction between different components.

[0036] In this preferred embodiment, the curvature fixing member 22 is disposed at the bottom of the overall structure (commonly known as the ground side). Through the cooperation of the first positioning structure 23 disposed on the curvature fixing member 22 and the second positioning structure 31 disposed on the diffuser plate 3, the diffuser plate 3 can be positioned. This eliminates the need for positioning elements disposed around the backlight module to fix the diffuser plate 3, as in the prior art, thus better meeting the requirements of a narrow bezel. The structural strength of the curvature fixing member 22 is higher than that of the diffuser plate 3, thus effectively pressing the diffuser plate 3 to form the same curvature as the curvature fixing member 22, stably maintaining the curvature of the diffuser plate 3, and preventing the diffuser plate 3 from springing back and affecting optical quality.

[0037] like Figure 5 As shown, a display panel P is then set on the curved backlight module, which constitutes the display device.

[0038] See Figure 6 This is a second preferred embodiment of the curved backlight module of the present invention, comprising a frame unit 4, a diffuser plate 5, a light source L, and a diaphragm unit M. It should be noted that in this preferred embodiment, only partial views of the above components are shown.

[0039] The frame unit 4 includes a back frame 41, a curved fastener 42 attached to the back frame 41, and a first positioning structure 43. The back frame 41 has a plate portion 411 and a side wall portion 412 disposed around the plate portion 411. The light source L is supported on the plate portion 411, and the diffuser plate 5 is supported on the side wall portion 412 and is located on the light-emitting side of the light source L.

[0040] The curvature fixing member 42 has a body portion 421 and a pressing portion 422 extending from the body portion 421. In this embodiment, the first positioning structure 43 is provided on the side wall portion 412 of the back frame 41 and is a protrusion structure protruding toward the diffuser plate 5. In addition, the diffuser plate 5 has a second positioning structure 51, which is a groove shape that is recessed inward from the edge.

[0041] When assembling the curved backlight module, the diffuser plate 5 is first placed on the side wall portion 412 of the back frame 41, and then the curvature fixing member 42 is attached to the diffuser plate 5. More specifically, when attaching the diffuser plate 5 to the back frame 41, the second positioning structure 51 of the diffuser plate 5 is positioned relative to the first positioning structure 43 located on the side wall portion 412 of the back frame 41, and the first positioning structure 43 and the second positioning structure 51 are mutually concave and convex to limit the position of the diffuser plate 5. Next, the curvature fixing member 42 is attached to the back frame 41, for example, by screwing, riveting, snapping, or gluing, but not limited to the methods listed above. In this embodiment, an accommodating groove 413 is formed on the outer side of the side wall portion 412 of the back frame 41, which is sufficient to accommodate the curvature fixing member 42. Next, the diaphragm unit M is placed on the diffuser plate 5. The diaphragm unit M has a positioning part M0, which is a groove structure that corresponds to the pressing part 422 of the curvature fixing member 42, thereby achieving the function of positioning the diaphragm unit M. When the curvature fixing member 42 is combined with the back frame 41, as... Figure 7 As shown, the body portion 421 of the curvature fixing member 42 abuts against the outer side of the side wall portion 412 of the back frame 41, and the pressing portion 422 of the curvature fixing member 42 presses the diffuser plate 5 against the top edge of the side wall portion 412, so that the pressed portion of the diffuser plate 5 forms the same curvature as the curvature fixing member 42.

[0042] The curvature fixing member 42 effectively presses down the diffuser plate 5, ensuring it forms the same curvature as the curvature fixing member 42. This stabilizes the curvature of the pressed area of ​​the diffuser plate 5, preventing it from springing back and affecting optical quality. Furthermore, in this preferred embodiment, the curvature fixing member 42 can be applied to display devices with only partial bending, such as the sides of a dashboard. Moreover, in this preferred embodiment, the structure of the curvature fixing member 42 is more streamlined, reducing mass production costs.

[0043] See Figure 8 This is a variation of the second preferred embodiment, in which the pressing portion 422 of the curvature fixing member 42 has two spaced-apart sheets 423, the first positioning structure 43 is disposed between the two sheets 423 and is in the form of a protrusion, and the second positioning structure 51 of the diffuser plate 5 is in the form of a groove recessed from the edge inward. During assembly, the edge of the diffuser plate 5 is first placed between the two sheets 423 of the curvature fixing member 42, so that the first positioning structure 43 and the second positioning structure 51 are positioned by a concave-convex interlocking manner. Simultaneously, the curvature fixing member 42 is used to first make a portion of the diffuser plate 5 form the same curvature as the curvature fixing member 42, such as... Figure 9As shown. Next, the curvature fixing member 42 and the diffuser plate 5, which is bent into an arc by the curvature fixing member 42, are joined together to the side wall portion 412 of the back frame 41, and then the diaphragm unit M is placed on the diffuser plate 5. This variation allows the diffuser plate 5 to form a specific curvature before assembly, which can effectively prevent the diffuser plate 5 from springing back during subsequent assembly and improve assembly efficiency.

[0044] See Figure 10 This is a third preferred embodiment of the curved backlight module of the present invention, comprising a frame unit 6, a diffuser plate 7, a light source L, and a diaphragm unit M. It should be noted that in this preferred embodiment, only partial views of the above components are shown.

[0045] The frame unit 6 includes a back frame 61, a curved fastener 62 attached to the back frame 61, and a first positioning structure 63. The back frame 61 has a plate portion 611 and a side wall portion 612 disposed around the periphery of the plate portion 611. The light source L is supported on the plate portion 611, and the diffuser plate 7 is supported on the side wall portion 612 and is located on the light-emitting side of the light source L.

[0046] The curvature fixing member 62 has an upper frame section 621 corresponding to the top edge of the side wall portion 612, a lower frame section 622 corresponding to the bottom edge of the side wall portion 612, and two reinforcing sections 623 respectively connected to the two ends of the upper frame section 621 and the lower frame section 622. In this embodiment, the first positioning structure 63 is preferably connected to the center position of the upper frame section 621 and the lower frame section 622 relative to the two reinforcing sections 623. The diffuser plate 7 has a second positioning structure 71 and two auxiliary positioning structures 72 located on both sides of the second positioning structure 71, both of which are grooves that are recessed inward from the edge. The side wall portion 612 of the back frame 61 has a locking groove 613 corresponding to the second positioning structure 71, and two clearance grooves 614 located on both sides of the locking groove 613 and respectively corresponding to the two auxiliary positioning structures 72.

[0047] In this preferred embodiment, during assembly, the diffuser plate 7 is first placed on the side wall portion 612 of the back frame 61, and the second positioning structure 71 is aligned with the locking groove 613, and the two auxiliary positioning structures 72 are aligned with the two clearance grooves 614. Then, the curvature fixing member 62 is combined with the diffuser plate 7 and the side wall portion 612 of the back frame 61, so that the first positioning structure 63 is embedded in the second positioning structure 71 and the locking groove 613. Simultaneously, the two reinforcing sections 623 of the curvature fixing member 62 are respectively accommodated in the two clearance grooves 614 of the side wall portion 612. Next, the diaphragm unit M is placed on the diffuser plate 7. The diaphragm unit M has a positioning part M0, which is a groove structure corresponding to the upper frame section 621 of the curvature fixing member 62, thereby achieving the function of positioning the diaphragm unit M. After assembly, as shown... Figure 11As shown, the upper frame segment 621 of the curvature fixing member 62 presses the diffuser plate 7 against the top edge of the side wall portion 612 and provides a uniform pressing effect on the part of the diffuser plate 7 that needs to form a curved shape.

[0048] It should be noted that, for example Figure 12 As shown, under normal temperature conditions, the first positioning structure 63 has a first structural width W01, the reinforcing section 623 of the curvature fixing member 62 has a second structural width W02, the locking groove 613 of the back frame 61 has a first notch width W11, the clearance groove 614 of the back frame 61 has a second notch width W12, the second positioning structure 71 of the diffuser plate 7 has a third notch width W13, and the auxiliary positioning structure 72 of the diffuser plate 7 has a fourth notch width W14. Preferably, for the back frame 61, the difference between the first notch width W11 and the first structural width W01 is smaller than the difference between the second notch width W12 and the second structural width W02. Similarly, for the diffuser plate 7, the difference between the third notch width W13 and the first structural width W01 is preferably smaller than the difference between the fourth notch width W14 and the second structural width W02. Through the above design, on the one hand, it can be ensured that the first positioning structure 63 can effectively limit the positioning point of the diffuser plate 7 relative to the back frame 61. On the other hand, in the case of thermal expansion, the diffuser plate 7 can use the space of the fourth notch width W14 to accommodate the expansion on both sides of the diffuser plate 7 with the second positioning structure 71 as the reference point. In this way, the diffuser plate 7 can be prevented from being damaged due to thermal expansion and contraction.

[0049] The frame structure of the curvature fastener 62 has better structural strength through the reinforcing sections 623 on the left and right sides, which helps to stabilize and maintain the local curvature of the diffuser plate 7. At the same time, the curvature fastener 62 is embedded in the side wall portion 612 of the back frame 61, which can also reduce the thickness of the side wall portion 612 and is beneficial for the design of narrow frame.

[0050] In summary, the curved backlight module and display device of the present invention, through the structural design of the curvature fixing member, can simultaneously achieve the functions of positioning and pressing the diffuser plate, eliminating the need for components located around the overall structure for positioning the diffuser plate in the prior art, and better meeting the requirements of narrow bezels. Furthermore, the curvature fixing member can also fix the curvature of the curved backlight module as a whole or partially, depending on its shape, thus effectively achieving the objectives of the present invention.

[0051] The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. Any simple equivalent changes and modifications made in accordance with the protection scope and description of the present invention shall still fall within the scope of the patent of the present invention.

[0052] [List of Labels in the Attached Image]

[0053] 2 Frame Units

[0054] 21 Back Frame

[0055] 211 Plate Body

[0056] 212 Side wall section

[0057] 22 Curvature fastener

[0058] 221 Ontology Department

[0059] 222 Pressing Department

[0060] 223 Recessed area

[0061] 23 First Positioning Structure

[0062] 3. Diffuser plate

[0063] 31 Second positioning structure

[0064] 4 Frame Units

[0065] 41 Back Frame

[0066] 411 Plate Body

[0067] 412 Side wall section

[0068] 413 Receiving slot

[0069] 42 Curvature fastener

[0070] 421 Ontology Department

[0071] 422 Pressing Department

[0072] 423 pieces

[0073] 43 First positioning structure

[0074] 5. Diffuser plate

[0075] 51 Second positioning structure

[0076] 6 Frame Units

[0077] 61 Back Frame

[0078] 611 Plate Body

[0079] 612 Side wall section

[0080] 613 Card slot

[0081] 614 Alternating Slot

[0082] 62 Curvature fastener

[0083] 621 Upper frame segment

[0084] 622 Lower frame segment

[0085] 623 Reinforcement Section

[0086] 63 First positioning structure

[0087] 7. Diffuser plate

[0088] 71 Second positioning structure

[0089] 72 Auxiliary Positioning Structure

[0090] L light source

[0091] M diaphragm unit

[0092] M0 Positioning Unit

[0093] P Display Panel

[0094] W01 First structural width

[0095] W02 Second structural width

[0096] W11 First notch width

[0097] W12 Second notch width

[0098] W13 Third notch width

[0099] W14 Fourth notch width.

Claims

1. A curved backlight module, comprising: A frame unit includes a back frame, a curvature fastener coupled to the back frame, and at least one first positioning structure disposed on one of the back frame and the curvature fastener. The light source is mounted on the back frame; and A diffuser plate, supported on the back frame and located on the light-emitting side of the light source, is provided. A curvature fixing member presses the diffuser plate so that at least a portion of the diffuser plate forms the same curvature as the curvature fixing member. The diffuser plate has at least one second positioning structure. The at least one first positioning structure of the frame unit is coupled to the at least one second positioning structure of the diffuser plate to limit the diffuser plate. The back frame has a plate portion for supporting the light source and a side wall portion disposed around the periphery of the plate portion for supporting the diffuser plate. The curvature fixing member has an upper frame segment corresponding to the top edge of the side wall portion and a lower frame segment corresponding to the bottom edge of the side wall portion. The at least one first positioning structure is connected between the upper frame segment and the lower frame segment. The at least one second positioning structure of the diffuser plate presents a groove shape that is recessed from the edge inward. The side wall portion of the back frame has at least one locking groove corresponding to the at least one second positioning structure. The at least one first positioning structure is embedded in the at least one second positioning structure and the at least one locking groove. The curvature fastener also has two reinforcing sections respectively connected to the two ends of the upper frame section and the lower frame section, and the side wall portion of the back frame also has two clearance grooves respectively located on both sides of the at least one locking groove. The first positioning structure has a first structural width, the reinforcing section of the curvature fixing member has a second structural width, the locking groove of the back frame has a first notch width, the clearance groove of the back frame has a second notch width, and the difference between the first notch width and the first structural width is less than the difference between the second notch width and the second structural width.

2. The curved backlight module according to claim 1, wherein, The at least one first positioning structure is connected at the center of the upper frame segment and the lower frame segment.

3. The curved backlight module according to claim 1, wherein, The diffuser plate also has two auxiliary positioning structures located on both sides of the second positioning structure and corresponding to the two clearance slots, and the two reinforcing sections of the curvature fixing member are respectively housed in the two clearance slots and the two auxiliary positioning structures.

4. The curved backlight module according to claim 3, wherein, The second positioning structure of the diffuser plate has a third notch width, and the auxiliary positioning structure of the diffuser plate has a fourth notch width. The difference between the third notch width and the width of the first structure is less than the difference between the fourth notch width and the width of the second structure.

5. A display device comprising a curved backlight module according to any one of claims 1 to 4, and a display panel disposed on the curved backlight module.

Images