TW202020525A - Curved backlight module and the display device - Google Patents

Abstract

A curved backlight module comprises a frame, a light source, and a light guide plate. The frame includes a back plate and a frame disposed around the backing plate. The back plate has a bottom and at least one side wall connected to the bottom, the bottom has a curvature corresponding to one of the side walls, and the side wall has a top edge, a bottom edge opposite to the top edge, and a plurality of openings, the aperture of the openings being reduced from the bottom edge to the top edge. The frame has at least one outer side surface corresponding to the side wall, and a plurality of connecting structures disposed on the outer side surface, and the connecting structures is correspondingly connected to the openings. Thereby, the back plate can be made to have different curvatures to be applied to display panels of different curvatures. The invention also provides a display device comprising the curved backlight module.

Description

Curved backlight module and its display device

The invention relates to an optical device, in particular to a curved backlight module and its display device.

With the rapid development of technology, all kinds of screens are also widely used in daily life, such as flat displays and curved displays. However, compared to flat screens, curved screens have a wider viewing angle and wider field of view, so they are often used to display wide-angle images. In addition, the curved screen will give users a better visual immersion experience due to the covering effect. The curved screen has a curvature, so it can avoid the reflection interference of the outer light source on both sides. In addition, since the curved screen has a curved structure and a radius of curvature, when the user views the focal point of the curved screen, the user's viewing angle is equidistant from the display screen, which can reduce the burden on the eyes. Furthermore, the design of mobile phones is also gradually moving towards narrow bezels, ultra-thin and curved surfaces.

In order to be able to be applied to screens with various curvatures and to satisfy consumers' expectations for curved screens, the design of the frame needs to be improved.

Therefore, one object of the present invention is to provide a curved backlight module.

The curved backlight module includes a frame, a light source disposed in the frame, and a light guide plate disposed in the frame and facing the light source. The frame includes a back plate and a frame body surrounding the back plate. Wherein, the back plate has a bottom and at least one side wall is connected to the bottom, Wherein the bottom has an arc corresponding to an arc of the at least one side wall, and the at least one side wall has a top edge, a bottom edge relative to the top edge, and a plurality of openings, and the apertures of the openings Shrinking from the bottom edge toward the top edge, the frame body has at least one outer side surface corresponding to the at least one side wall, and a plurality of connection structures provided on the at least one outer side surface, the connection structure The corresponding opening is correspondingly connected.

Another technical means of the present invention is that each opening is tapered from the bottom edge to the top edge to form a frusto-conical shape.

Another technical means of the present invention is that each opening has a large aperture portion connected to the bottom edge, a small aperture portion connected to the top edge and having an aperture smaller than the large aperture portion, and a large aperture portion connected to the large aperture portion The shoulder of the small aperture portion.

Still another technical means of the present invention is that the frame body is combined with the back plate by means of entrapment molding, and the frame body covers the top edge of the at least one side wall of the back plate.

Another technical means of the present invention is that the at least one side wall has two side portions, an intermediate portion between the two side portions, and a plurality of first positioning holes, and the opening is provided in the middle In part, the first positioning holes are provided on the two sides, and the frame body further has a plurality of first positioning structures corresponding to the first positioning holes.

Another technical means of the present invention is that the at least one side wall further has a plurality of second positioning holes, the second positioning holes are provided in the middle portion and between adjacent openings, the frame body There are also a plurality of second positioning structures corresponding to the second positioning holes.

Another technical means of the present invention is that the arrangement density of the second positioning holes is greater than the arrangement density of the first positioning holes.

Another object of the present invention is to provide a display device including the aforementioned curved backlight module, a panel attachment, a plurality of optical films, and a display panel disposed on the curved backlight module. Wherein, the optical film is stacked on the light guide plate, and the panel attachment is the same Attached to the optical film, the frame and the display panel.

The beneficial effect of the present invention is that, through the structural design of the back plate and the frame body of the frame, the back plate can be produced with different curvatures to be suitable for display panels with different curvatures.

2‧‧‧Frame

3‧‧‧Light source

4‧‧‧Light guide plate

5‧‧‧Backboard

51‧‧‧Bottom

52‧‧‧Side wall

521‧‧‧Top side

522‧‧‧Bottom

523‧‧‧Side

524‧‧‧ middle part

525‧‧‧opening

526‧‧‧First positioning hole

527‧‧‧Second positioning hole

528‧‧‧Large aperture

529‧‧‧Small aperture

530‧‧‧Shoulder

6‧‧‧Frame

61‧‧‧Outside

62‧‧‧Connection structure

63‧‧‧First positioning structure

64‧‧‧Second positioning structure

A‧‧‧Curved backlight module

B‧‧‧Panel attachment

C‧‧‧Optical diaphragm

D‧‧‧Display panel

1 is a perspective exploded view illustrating a preferred embodiment of the display device of the present invention; FIG. 2 is a partial perspective view illustrating the three-dimensional structure of a frame in the preferred embodiment; FIG. 3 is a partial perspective exploded view, Auxiliary explanation Figure 2; FIG. 4 is a front view, auxiliary explanation FIG. 2; FIG. 5 is a partial perspective view, illustrating another aspect of the frame in the preferred embodiment; FIG. 6 is a partial perspective exploded view, auxiliary Explaining FIG. 5; and FIG. 7 is a front view to assist in explaining FIG. 5.

Relevant patent application features and technical contents of the present invention will be clearly presented in the following detailed description of preferred embodiments in conjunction with reference drawings. Before making a detailed description, it should be noted that similar elements are represented by the same number.

Referring to FIG. 1, a preferred embodiment of a display device of the present invention includes a curved backlight module A, a panel attachment B, a plurality of optical films C, and a display panel D disposed on the curved backlight module A . The curved backlight module A includes a frame 2, a light source 3 disposed in the frame 2, and a light guide plate 4 disposed in the frame 2 and facing the light source 3.

The frame 2 includes a back plate 5 and a frame 6 disposed around the back plate 5. The optical film C is stacked on the light guide plate 4, The panel attachment B is attached to the optical film C, the frame 6 and the display panel D at the same time. In this embodiment, the back plate 5 is rectangular and has a bottom 51, and two side walls 52 connected to the bottom 51 and located on opposite sides of the bottom 51, and the bottom 51 has a curvature corresponding to the One arc of the two side walls 52.

2 to 4, each side wall 52 has a top edge 521, a bottom edge 522 opposite to the top edge 521, two side portions 523, and a middle portion 524 between the two side portions 523 1. A plurality of openings 525 disposed in the middle portion 524, a plurality of first positioning holes 526 disposed in the two side portions 523, and a plurality of second positioning holes 527 disposed in the middle portion 524.

The frame 6 covers the top edge 521 of the two side walls 52, the diameter of the opening 525 is reduced from the bottom edge 522 toward the top edge 521, and the second positioning hole 527 is located at Between the adjacent openings 525. Since the back plate 5 is made of metal material and has greater rigidity, the opening 525 formed in the middle portion 524 of the side wall 52 is designed into a jigsaw shape, which can not only maintain the shape of the back plate 5 The strength also allows the middle portion 524 to be given flexibility and a larger bending width. As for the two side portions 523, no jigsaw-shaped openings are provided, most of the structure of the back plate 5 is retained, and only the first positioning holes 526 spaced apart are used to perform a small bending width.

In addition, as long as the design style of the opening 525 is changed, the functions of structural reinforcement and bendability can be achieved. At the same time, the frame 6 is made of plastic material and has greater flexibility. After the curvature of the back plate 5 is stamped and formed, it is placed in a mold cavity (not shown) and then inserted molding (insert molding) ) Way, the back plate 5 and the frame 6 are combined with each other, which can eliminate the assembly tolerance of the back plate 5 and the frame 6, effectively achieve thinning of the appearance, and can also solve the problem of insufficient height space and flexibility to increase the curvature Between the curved backlight module A and the display panel D Serve evenly.

In addition, it should be noted that when the back plate 5 is stamped and formed, the bending position is likely to cause stress concentration and cause the material to squeeze and deform. Therefore, it is necessary to provide the first positioning hole 526 and the second positioning hole 527 as stress relief and improvement The problem of extrusion deformation. At the same time, when the frame body 6 is embedded, the first positioning hole 526 and the second positioning hole 527 can also be used as a joint with the frame body 6 to strengthen the back plate 5 and the frame body 6 Combine. The greater the degree of bending, the more likely the back plate 5 and the frame 6 are separated from each other. Therefore, the arrangement density of the second positioning holes 527 provided in the middle portion 524 is greater than that of the first positioning holes 526 The density is arranged to strengthen the bonding degree of the back plate 5 and the frame 6. By changing the arrangement density of the first positioning holes 526 and the second positioning holes 527, it is also possible to provide a small adjustment of the arc of each side wall 52.

Referring to FIG. 3, the frame body 6 has two outer side surfaces 61 corresponding to the two side walls 52 (only one is shown due to the angle of view), a plurality of connection structures 62 and a plurality of connection structures provided on the two outer side surfaces 61 A first positioning structure 63, and a plurality of second positioning structures 64. The connecting structure 62 is corresponding to the opening 525, the first positioning structure 63 is corresponding to the first positioning hole 526, and the second positioning structure 64 is corresponding to the second positioning hole 527.

Each opening 525 is tapered from the bottom edge 522 toward the top edge 521 to form a frusto-conical shape. In particular, if the design of the combination of the back plate 5 and the frame 6 is improper, it is also easy to separate the two due to external forces and cause structural damage. Therefore, the design of each opening 525 is tapered from the bottom edge 522 toward the top edge 521, so that the area between two adjacent openings 525 presents a trapezoid with a wide width and a narrow width, and the frame 6 It is to cover the top edge 521 of the two side walls 52, thereby strengthening the coupling between the back plate 5 and the frame 6. In addition, it should be noted that since the frame 6 is formed by inserting (insert molding) is combined with the back plate 5, so the back plate 5 and the frame 6 are actually a unitary structure, and in FIG. 3 is to show the two side walls 52 of the back plate 5 and the frame 6 The details of the structure and the combination of the only way to separate the back plate 5 from the frame 6. In order to clearly show the coupling relationship between the back plate 5 and the frame body 6, the area of the frame body 6 is shown with diagonal lines in FIG.

It can be known from the above structural design that the back plate 5 of the frame 2 of the curved backlight module A is designed with an opening 525 through its side wall 52, and the diameter of the opening 525 is determined by the bottom edge 522 The direction of the top edge 521 is reduced, so that the left and right sides of the back plate 5 can be bent downward to form the aforementioned arc to produce a curved surface, and after the back plate 5 is fixed to the arc, the frame 6 is bent In the manner of insert molding, corresponding to the opening 525, the first positioning hole 526, and the second positioning hole 527 of each side wall 52, the connection structure 62 of the frame 6 is formed 1. The first positioning structure 63 and the second positioning structure 64 are further coated on the back plate 5 to fix the curvature of the back plate 5.

In addition, it should be noted that each opening 525 may also have a large aperture portion 528 connected to the bottom edge 522 and a top aperture 521 with an aperture smaller than the large aperture portion 528 as shown in FIGS. 5 to 7. A small aperture portion 529, and a shoulder portion 530 connecting the large aperture portion 528 and the small aperture portion 529. In this way, another alternative aspect is provided. At the same time, in this aspect, each side wall 52 is not provided with the second positioning hole 527 as shown in FIG. 4, and the frame 6 is not provided with the second positioning. Structure 64. Similarly, in order to clearly show the connection relationship between the back plate 5 and the frame body 6, the area of the frame body 6 is shown with diagonal lines in FIG.

In summary, the present invention can achieve the effect of accurately adjusting the shape and curvature of the back plate 5 through the structural design of the back plate 5 and the frame 6 of the frame 2, so that the back plate 5 produces different curvatures The display panel D with different curvatures is applicable, so it is indeed possible to achieve the purpose of the invention.

However, the above are only preferred embodiments of the present invention However, it should not be used to limit the scope of implementation of the present invention, that is, any simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the description of the invention are still covered by the patent of the present invention.

5‧‧‧Backboard

51‧‧‧Bottom

52‧‧‧Side wall

521‧‧‧Top side

522‧‧‧Bottom

523‧‧‧Side

524‧‧‧ middle part

525‧‧‧opening

526‧‧‧First positioning hole

527‧‧‧Second positioning hole

6‧‧‧Frame

Claims (8)

A curved backlight module includes: a frame, including a back plate, and a frame surrounding the back plate, wherein the back plate has a bottom and at least one side wall is connected to the bottom, wherein the bottom has a The radian corresponds to one radian of the at least one side wall, and the at least one side wall has a top edge, a bottom edge relative to the top edge, and a plurality of openings, the aperture of the opening is determined by the bottom edge Shrinking in the direction of the top edge, the frame body has at least one outer side surface corresponding to the at least one side wall, and a plurality of connection structures provided on the at least one outer side surface, the connection structure is corresponding to the connection An opening; a light source, which is arranged in the frame; and a light guide plate, which is arranged in the frame and faces the light source. According to the curved backlight module described in item 1 of the patent application range, each opening is tapered from the bottom edge toward the top edge to form a frusto-conical shape. The curved backlight module according to item 1 of the patent application scope, wherein each opening has a large aperture portion connected to the bottom edge, a small aperture portion connected to the top edge and having an aperture smaller than the large aperture portion, and A shoulder connecting the large aperture portion and the small aperture portion. The curved backlight module according to item 1 of the scope of the patent application, wherein the frame body is integrated with the back plate by a built-in molding method, and the frame body covers the at least one side wall of the back plate Top edge. The curved backlight module according to item 1 of the patent application scope, wherein the at least one side wall has two side portions, an intermediate portion between the two side portions, and a plurality of first positioning holes, so The opening is provided in the middle part, so The first positioning holes are provided on the two sides, and the frame body further has a plurality of first positioning structures corresponding to the first positioning holes. The curved backlight module according to item 5 of the patent application scope, wherein the at least one side wall further has a plurality of second positioning holes, the second positioning holes are provided in the middle portion and are located adjacent to the opening Between the holes, the frame body also has a plurality of second positioning structures corresponding to the second positioning holes. The curved backlight module according to item 6 of the patent application range, wherein the arrangement density of the second positioning holes is greater than the arrangement density of the first positioning holes. A display device comprising a curved backlight module as described in any one of the first to seventh patent applications, a panel-attached accessory, a plurality of optical diaphragms, and a curved backlight module provided on the curved backlight module A display panel, wherein the optical film is stacked on the light guide plate, and the panel attachment is attached to the optical film, the frame, and the display panel at the same time.

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