Multi-screen backlight module with separators and display device

Abstract

The utility model relates to a multi-screen backlight module with separators and a display device. A backlight module comprises: a back plate; the at least one separator is fixed on the back plate, the back plate and the separator jointly form a plurality of accommodating spaces, and the accommodating spaces are arranged along a transverse shaft; the plurality of light guide plates are respectively arranged in the accommodating spaces and are arranged on the back plate along a longitudinal axis, and the longitudinal axis is parallel to the thickness direction of the light guide plates; the light-emitting elements are adjacently arranged on the light guide plates; wherein the separator is provided with at least one main body, the main body extends along the longitudinal axis, and two ends of the main body are provided with a first extension part and a second extension part which respectively extend towards opposite directions along the transverse axis.

Description

Technical Field

[0001] The utility model relates to a backlight module, in particular to a multi-screen backlight module with a separator and a display device. Background Art

[0002] At present, the backlight module and the display device need to have different display functions on the same display plane in response to the design requirements. Therefore, the screen needs to be spliced ​​to perform different display functions. Therefore, the backlight module must also be combined in a spliced ​​manner. In this way, the light can be controlled by different light guide plates, so that the two screens can achieve different functions respectively. At the same time, there must be a baffle between adjacent light guide plates to serve as a shading to prevent the light on both sides of the light guide plates from interfering with each other and affecting the lighting effect.

[0003] In view of this, it is necessary to provide a partition structure with a light shielding function to solve the light interference problem of multiple screens in the above-mentioned backlight module. Utility Model Content

[0004] The utility model aims to provide a backlight module, which has at least one partition on a back plate, and utilizes the back plate and the partition to form a plurality of accommodating spaces to prevent the partition from leaking light from the side of the light guide plate, and distinguish the two light guide plates supported on the back plate, so as to achieve the purpose of narrow frame and optical taste.

[0005] Another object of the present invention is to provide a display device, which may include the aforementioned backlight module to achieve the purpose of narrow frame and optical quality.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a backlight module, comprising: a back panel; at least one partition is fixed on the back panel, the back panel and the partition together form a plurality of accommodating spaces, and the accommodating spaces are arranged along a horizontal axis; a plurality of light guide plates are respectively arranged in the accommodating spaces and arranged on the back panel along a longitudinal axis, and the longitudinal axis is parallel to the thickness direction of the light guide plates; and a plurality of light-emitting elements are adjacently arranged on the light guide plates; wherein the partition has at least one main body, the main body extends along the longitudinal axis, and the two ends of the main body have a first extension portion and a second extension portion extending along the horizontal axis and in opposite directions respectively.

[0007] The utility model provides a display device, comprising: the aforementioned backlight module; and a display panel, which is arranged in front of the backlight module.

[0008] In some embodiments, the width of the second extension portion is greater than the width of the first extension portion, and the second extension portion has at least one fixing hole, and a fixing member is used to fix the back plate and the fixing hole of the separator.

[0009] In some embodiments, the back plate has at least one groove, and the second extension portion extends into the groove to be snap-fitted and positioned.

[0010] In some embodiments, the back plate has a supporting surface and a groove, the supporting surface is used to support the light guide plate, the second extension portion is disposed in the groove, and the surface of the second extension portion is coplanar with the supporting surface.

[0011] In some embodiments, the number of the separators is two, and the number of the main bodies of each separator is multiple and arranged at intervals, so that the main body of the separator corresponds to the main body of another separator and is staggered with each other.

[0012] In some embodiments, the backlight module further includes a plurality of optical films respectively disposed on the light guide plate, and the first extension portion is located on at least one of the optical films.

[0013] In some embodiments, the back plate of the backlight module further includes at least two opposite side walls, the inner surfaces of the two side walls are respectively provided with a positioning groove, and the two ends of the separator are respectively fixedly disposed in the positioning groove.

[0014] The backlight module and display device of the utility model utilize a separator to prevent light leakage from the side of the light guide plate, and distinguish the two light guide plates placed on the back plate, so as to maintain a better optical quality and a narrower spacing between the side edges of the light guide plates, which can meet the requirements of narrow frame design and maintain a better optical quality. For example, the backlight module and display device of the utility model can utilize the existing commercially available sheet metal that can be bent to serve as a reference surface for positioning the light guide plate, and as a side shading between two adjacent light guides or optical films to avoid light interference problems, which not only saves costs but also allows for rapid production, and utilizes the ultra-thin characteristics of the sheet metal to reduce the size of the support member, thereby achieving the effect of extremely narrowing the middle frame of the dual-screen connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a side cross-sectional schematic diagram of the backlight module of the utility model.

[0016] Figure 2 It is a three-dimensional schematic diagram of an embodiment of a separator of the utility model.

[0017] Figure 3 It is a partially enlarged schematic side view of a cross-section of a backlight module of the utility model.

[0018] Figure 4 It is a partially enlarged schematic side view of another embodiment of the backlight module of the utility model.

[0019] Figure 5 It is a partially enlarged schematic side view of a cross-section of another embodiment of the backlight module of the utility model.

[0020] Figure 6 It is a three-dimensional schematic diagram of another embodiment of the separator of the utility model.

[0021] Figure 7 It is a partially enlarged schematic diagram of the side wall and the partition of the backlight module of the utility model.

[0022] Figure 8 It is a side cross-sectional schematic diagram of the display device of the utility model. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail as follows with reference to the drawings. The drawings are mainly simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner. Therefore, only elements related to the present invention are marked in the drawings, and the elements shown are not drawn in terms of the number, shape, size ratio, etc. during implementation. The specifications and dimensions during actual implementation are actually a selective design, and the element layout may be more complicated.

[0024] The following descriptions of the embodiments are made with reference to the attached drawings to illustrate specific embodiments on which the present invention can be implemented. The directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present application, rather than to limit the present application. In addition, in the specification, unless explicitly described to the contrary, the word "comprising" will be understood to mean including the elements described, but not excluding any other elements.

[0025] See also Figures 1 to 3 As shown, it is a preferred embodiment of the backlight module of the utility model. The backlight module includes a back plate 10, a plurality of light guide plates 40 and a plurality of light emitting elements.

[0026] The side cross-section direction of the backlight module is divided into a horizontal axis H and a vertical axis V. At least one partition 20 is fixed on the back plate 10. The back plate 10 and the partition 20 together form a plurality of accommodating spaces 30. The accommodating spaces 30 are arranged along the horizontal axis H. A plurality of light guide plates 40 are respectively disposed in the accommodating spaces 30 and disposed on the back plate 10 along a vertical axis V. The vertical axis V is parallel to the thickness direction of the light guide plates 40. A plurality of light emitting elements are disposed adjacent to the light guide plates 40. The light emitting elements and the light guide plates 40 are used to refract the light source from the backlight module. In this embodiment, the light emitting elements are located on the other side where the partition 20 is not disposed, so they are not shown.

[0027] The separator 20 has at least one main body 21, which extends along the longitudinal axis V. The two ends of the main body 21 have a first extension portion 22 and a second extension portion 23 extending along the transverse axis H and in opposite directions. With the separator 20 located on the back plate 10, when multiple light guide plates 40 are arranged in the accommodating spaces 30, the separator 20 can be used as a light shielding plate on the sides of two adjacent light guide plates 40 to prevent the light of the two light guide plates 40 from interfering with each other and affecting the light output effect. In this way, the separator that prevents light leakage from the side of the light guide plate is used to distinguish the two light guide plates placed on the back plate, so as to maintain a better optical taste and a narrower spacing between the side edges of the light guide plates, which can meet the requirements of narrow frame design and maintain a better optical taste.

[0028] See also Figure 2 and Figure 3 As shown, in this embodiment, the width W2 of the second extension portion 23 of the separator 20 along the horizontal axis H is greater than the width W1 of the first extension portion 22, and the second extension portion 23 has at least one fixing hole 231, and the back plate 10 is fixedly combined with the fixing hole 231 of the separator 20 by a fixing member 80. The fixing member 80 can be a bolt, and the bolt penetrates the fixing hole 231 and the back plate 10 at the same time, so that the separator 20 is fixed on the surface of the back plate 10 by the second extension portion 23. After the bolt penetrates the fixing hole 231 and is locked with the back plate 10, the height of the bolt is lower than the plane of the second extension portion 23 facing the light guide plate 40, so that after the separator 20 is assembled and fixed to the back plate 10, its surface will not scratch the surface of the light guide plate 40.

[0029] See also Figure 4 As shown, in another embodiment, the partition 20 is fixed by providing at least one groove 11 on the back plate 10, and the second extension portion 23 extends into the groove 11 to snap into position, so that the partition 20 can be quickly fixed to the back plate 10 without other fixing parts.

[0030] See also Figure 5 As shown, in another embodiment, the partition 20 is fixed in such a way that the back panel 10 has a supporting surface 12 and a groove 13, the supporting surface 12 is used to support the light guide plate 40, the second extension portion 23 is arranged in the groove 13, and the surface of the second extension portion 23 is coplanar with the supporting surface 12, so the surface of the second extension portion 23 faces the light guide plate 40 in the same manner as the supporting surface 12 of the back panel 10, the surface of the second extension portion 23 also supports the light guide plate 40, and the other surface of the second extension portion 23 can be adhered to the groove 13, so that the partition 20 can be fixed to the back panel 10.

[0031] The partition 20 and the back plate 10 are fixedly connected in the above-mentioned manners, but are not limited thereto. By using the above-mentioned embodiments, the partition 20 can be quickly fixed on the back plate 10. In addition, since the surface of the light guide plate 40 needs to be carefully protected, scratches will affect the function of the light guide plate 40, a flat and smooth part should be used as much as possible on the surface opposite to the light guide plate 40. Therefore, the above-mentioned fixing methods can make the second extension portion 23 and the surface of the back plate 10 coplanar, so that the surface of the light guide plate 40 can be protected to reduce the damage to its function due to scratches.

[0032] See also Figure 6 As shown, in other embodiments, the number of the separators 20 is two, and the number of the main bodies 21 of each separator 20 is multiple and arranged at intervals, so that the main body 21 of the separator 20 corresponds to the main body 21 of another separator 20 and is staggered with each other. In this way, the main bodies 21 of the two separators 20 adjacent to each other can support each other, so that the lateral support strength of the two separators 20 relative to each other is greater, and it is not easy to be concave and deformed.

[0033] See also Figure 7 As shown, the back plate 10 of the backlight module further includes at least two opposite side walls 14, and the inner surfaces of the two side walls 14 are respectively provided with a positioning groove 141, and at least one end of the separator 20 in the above-mentioned embodiments is fixedly disposed in the positioning groove 141. The positioning groove 141 provides a reference surface for positioning the separator 20 during assembly, which not only enables the separator 20 to be stably positioned on the side wall 14 of the back plate 10, but also utilizes the accommodation space 30 formed by the separator 20 and the back plate 10 to locate the position of each light guide plate 40.

[0034] See also Figures 3 to 5 As shown, the backlight module of the present invention further includes a plurality of optical films 60 respectively disposed on the light guide plate 40, and the first extension portion 22 is located on at least one of the optical films 60, so that the first extension portion 22 can not only ensure the light shielding effect of the light guide plate 40 and the side of the optical film 60, but also prevent the light from the light emitting surface of the optical film 60 below the first extension portion 22 from affecting the adjacent light emitting surface. The optical film 60 can include a diffuser or a prism sheet, but is not limited thereto.

[0035] In one embodiment, the separator 20 is preferably made of a thin sheet metal that can be bent, such as a thin sheet metal with a thickness of less than 0.3 mm, which can be bent into a Z-shaped separator 20 as in this embodiment. Since the die-cast metal plate must be at least 1.5 mm thick to be formed, if a separator structure is added to the conventional die-cast backplane, not only does it require an additional mold, but it is also impossible to achieve a narrow frame effect due to process limitations, thereby affecting the viewing effect of the entire screen. Therefore, in this embodiment, a sheet metal with a thickness of less than 0.3 mm is used for bending. Not only does it not require an additional mold, the process is fast and simple, and the separator 20 made of this thin sheet metal can not only effectively block light, but also achieve an extremely narrow frame effect, so that the distance between the two light guide plates 40 can be narrowed, and the connection effect of different display screens can be better.

[0036] See also Figure 8 As shown, it is a preferred embodiment of the display device of the present invention, comprising: a backlight module as mentioned above, and a display panel 70, wherein the display panel 70 is disposed in front of the backlight module.

[0037] As mentioned above, the backlight module and display device of the present invention utilize a separator 20 that prevents light leakage from the side of the light guide plate 40 to distinguish the two light guide plates 40 placed on the back plate 10, so as to maintain a better optical quality and a narrower spacing between the side edges of the light guide plates 40, which can meet the requirements of narrow frame design and maintain a better optical quality. For example, the backlight module and display device of the present invention can use a separator 20 made of ultra-thin sheet metal, which can be formed by a simple bending process and does not require additional molds. In addition to saving production costs, the separator 20 is set between two adjacent light guide plates 40 on the back plate 10, which can effectively block light and prevent the side light of the two light guide plates 40 or the optical film 60 from interfering with each other and affecting the light output effect. It can also achieve the effect of an extremely narrow frame, so that the overall display effect of display screens with different display functions is better. The backlight module and display device of the present invention can be applied to products with multi-screen displays, such as automotive displays. In large-size automotive displays, if the display screens of the center console and the instrument panel are integrated into the same display device, the separator 20 of the present invention can be used to separate the light below the display screen of the center console and the display screen of the instrument panel without affecting the display effects of the images on both sides.

[0038] The above disclosed embodiments are only illustrative of the principles, features and effects of the present invention, and are not intended to limit the scope of the present invention. Anyone skilled in the art may modify and alter the above embodiments without violating the spirit and scope of the present invention. Any equivalent changes and modifications made using the contents disclosed in the present invention shall still be covered by the claims.

[0039]

Explanation of symbols

[0040] 10: Back panel

[0041] 11: Groove

[0042] 12: Supporting surface

[0043] 13: Groove

[0044] 14: Sidewall

[0045] 141: Positioning slot

[0046] 20: Separator

[0047] 21: Main body

[0048] 22: First extension

[0049] 23: Second extension

[0050] 231: Fixing hole

[0051] 30: Accommodation space

[0052] 40: Light guide plate

[0053] 60: Optical film

[0054] 70: Display Panel

[0055] 80: Fixing parts

[0056] V: Vertical axis

[0057] H: horizontal axis

[0058] W1: Width

[0059] W2: width.

Claims

1. A multi-screen backlight module with a separator, characterized in that: Include: Back panel; At least one partition is fixed to the back plate, the back plate and the partition together form a plurality of accommodation spaces, and the plurality of accommodation spaces are arranged along the horizontal axis; A plurality of light guide plates are respectively disposed in the plurality of accommodating spaces and disposed on the back plate along a longitudinal axis, wherein the longitudinal axis is parallel to a thickness direction of the plurality of light guide plates; as well as A plurality of light emitting elements are disposed adjacent to the plurality of light guide plates; The separator has at least one main body, which extends along the longitudinal axis. Two ends of the main body have a first extending portion and a second extending portion which extend along the transverse axis and in opposite directions.

2. The multi-screen backlight module with a separator according to claim 1, characterized in that: The width of the second extension part is greater than that of the first extension part, and the second extension part has at least one fixing hole, and the back plate is fixedly combined with the fixing hole of the partition by a fixing piece.

3. The multi-screen backlight module with a separator according to claim 1, characterized in that: The back plate has at least one groove, and the second extension portion extends into the groove for locking and positioning.

4. The multi-screen backlight module with a separator according to claim 1, characterized in that: The back plate has a supporting surface and a groove. The supporting surface is used to support the light guide plate. The second extension part is arranged in the groove, and the surface of the second extension part is coplanar with the supporting surface.

5. The multi-screen backlight module with a separator according to claim 1, characterized in that: The number of the separators is two, and the number of the main bodies of each separator is multiple and arranged at intervals, so that the main body of the separator corresponds to the main body of another separator and is staggered with each other.

6. The multi-screen backlight module with a separator according to claim 1, characterized in that: The backlight module further comprises a plurality of optical films which are respectively arranged on the light guide plate, and the first extension portion is located on at least one of the optical films.

7. The multi-screen backlight module with a separator according to claim 1, characterized in that: The back plate of the backlight module also includes at least two opposite side walls. The inner surfaces of the two side walls are provided with at least one positioning groove. At least one end of the partition is fixedly disposed in the positioning groove.

8. A display device, characterized in that: Include: A multi-screen backlight module with a separator as claimed in any one of claims 1 to 7; and The display panel is arranged in front of the multi-screen backlight module with the separator.

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