TWI680334B - Curved backlight module and the display device - Google Patents

Abstract

A curved backlight module includes a frame, a light source, and a light guide plate. The frame includes a back plate and a frame body arranged around the back plate. The backboard has a bottom and at least one side wall connected to the bottom, the bottom has an arc corresponding to one arc of the side wall, and the side wall has a top edge, a bottom edge opposite to the top edge, and A plurality of openings, the diameter of the openings is reduced from the bottom edge to the top edge. The frame body has at least one outer side surface corresponding to the side wall, and a plurality of connection structures provided on the outer surface, and the connection structures are correspondingly connected to the openings. Thereby, the back plate can generate different curvatures to be suitable for display panels with different curvatures. The invention also provides a display device including the curved backlight module.

Description

Curved backlight module and display device

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

With the rapid development of technology, various screens are also widely used in daily life, such as flat screens and curved displays. However, curved screens have a wider viewing angle and wider field of view than flat screens, so they are often used to display wide-angle images. In addition, the curved screen will give users a better visual immersive experience due to the covering effect. The curved screen is curved, so it can avoid the reflection interference from the outer light sources on both sides. In addition, because 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 will be equal to the display screen, which can reduce the burden on the eyes. In addition, the design of mobile phones is gradually developing towards narrow bezels, ultra-thinness, and curved surfaces.

In order to be applicable to screens with various curvatures, and to meet consumers' expectations for curved screens, the design of their bezels needs to be improved.

Therefore, an 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 arranged around the back plate. The back plate has a bottom and at least one side wall connected to the bottom. The bottom has an radian corresponding to one radian of the at least one side wall, and the at least one side wall has a top edge, a bottom edge opposite to the top edge, and a plurality of openings. It is reduced from the bottom edge to the top edge. The frame has at least one outer side corresponding to the at least one side wall, and a plurality of connection structures provided on the at least one outer surface. The connection structure Is corresponding to the opening.

Another technical means of the present invention is that each opening is tapered from the bottom edge to the top edge to form a truncated cone 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 a smaller aperture than the large aperture portion, and a connection between the large aperture portion and The shoulder portion of the small aperture portion.

Another technical means of the present invention is that the frame body is bonded to the back plate by insert molding, and the frame body is a top edge covering 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, a middle portion located between the two side portions, and a plurality of first positioning holes, and the opening holes are disposed in the middle. In part, the first positioning holes are disposed on the two side portions, 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 disposed in the middle portion and between the adjacent openings, and the frame body It also has 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 mounting accessory, 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 accessories are the same Attached to the optical film, the frame and the display panel.

The beneficial effect of the present invention is that, by the structural design of the back plate and the frame of the frame, the back plate can have different curvatures to be applicable to display panels with different curvatures.

2‧‧‧ frame

3‧‧‧ light source

4‧‧‧light guide

5‧‧‧ back plate

51‧‧‧ bottom

52‧‧‧Side wall

521‧‧‧Top edge

522‧‧‧ bottom

523‧‧‧Side

524‧‧‧ middle section

525‧‧‧ opening

526‧‧‧first positioning hole

527‧‧‧Second positioning hole

528‧‧‧Large aperture section

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 stickers accessories

C‧‧‧Optical diaphragm

D‧‧‧Display Panel

FIG. 1 is an exploded perspective 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; and FIG. 3 is a partial perspective exploded view, Auxiliary explanation FIG. 2; FIG. 4 is a front view to assist in explaining 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 to assist FIG. 5 is explained; and FIG. 7 is a front view to assist in explaining FIG. 5.

The features and technical contents of the related patent application of the present invention will be clearly presented in the following detailed description of the preferred embodiments with reference to the drawings. It should be noted before detailed description that similar elements are represented by the same number.

Referring to FIG. 1, a preferred embodiment of a display device according to 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 accessory 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 two opposite sides of the bottom 51, and the bottom 51 has an arc corresponding to the One of the two side walls 52 is radian.

Referring to FIGS. 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. A plurality of openings 525 provided at intervals in the intermediate portion 524, a plurality of first positioning holes 526 provided at intervals in the two side portions 523, and a plurality of second openings 527 provided at intervals in the intermediate portion 524.

The frame body 6 covers the top edge 521 of the two side walls 52. The aperture of the opening 525 is reduced from the bottom edge 522 to the top edge 521. The second positioning hole 527 is located at Between the adjacent openings 525. Since the back plate 5 is made of a metal material and has greater rigidity, the opening 525 formed in the middle portion 524 of the side wall 52 is designed in a puzzle shape, which can not only maintain the shape of the back plate 5 The strength also allows the intermediate portion 524 to impart flexibility and allow a large bending width. As for the two side portions 523, there are no jigsaw-shaped openings, and most of the structure of the back plate 5 is maintained, and only the first positioning holes 526 provided at intervals 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 enhancement and flexibility can be achieved. At the same time, the frame body 6 is made of plastic material and has a large flexibility. After the curvature of the back plate 5 is stamped and formed, it is placed in a cavity (not shown) and then insert molding is performed. ) Method allows the back plate 5 and the frame body 6 to be combined with each other, which can eliminate assembly tolerances of the back plate 5 and the frame body 6, effectively reduce the appearance, and can also solve the problem of insufficient height space and flexibility to increase curvature. Performance can make the curved backlight module A and the display panel D Flat clothes.

In addition, it should be noted that, when the back plate 5 is stamped and formed, stress is likely to be caused by bending at the bend and the material is deformed. Therefore, the first positioning hole 526 and the second positioning hole 527 need to be provided as stress relief and improvement. The problem of extrusion deformation. At the same time, when the frame body 6 is being molded, 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. Combined. 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 combination of the back plate 5 and the frame body 6. By changing the arrangement density of the first positioning holes 526 and the second positioning holes 527, the effect of adjusting the radian of each side wall 52 can also be provided.

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

Each of the openings 525 is tapered from the bottom edge 522 toward the top edge 521 to form a truncated cone shape. It should be particularly noted that if the combined shape design of the back plate 5 and the frame body 6 is improper, it is also easy to separate the two due to external forces and cause structural damage. Therefore, the design that each opening 525 is tapered from the bottom edge 522 to the top edge 521 makes the area between two adjacent openings 525 present a trapezoid with a wide width and a narrow width, and makes the frame 6 The top edge 521 of the two side walls 52 is covered, so as to strengthen the bonding between the back plate 5 and the frame 6. It should also be noted that since the frame 6 is an insert molding method (insert molding) is coupled to the back plate 5, so the back plate 5 and the frame body 6 are actually an integrated structure, and in FIG. Only the detailed structure and combination of the backplane 5 and the frame 6 are separated. In order to clearly show the binding relationship between the back plate 5 and the frame body 6, the area of the frame body 6 is shown by oblique lines in FIG. 4.

According to the above structural design, it can be known that the back plate 5 of the frame 2 of the curved backlight module A has a design of an opening 525 formed by its side wall 52, and the aperture of the opening 525 is formed by the bottom edge 522. Shrink toward the top edge 521, so that the left and right sides of the back plate 5 can be bent downward to form the aforementioned radian to produce a curved surface, and after the back plate 5 is fixed in radian, the frame body 6 The method of insert molding corresponds to the opening 525, the first positioning hole 526, and the second positioning hole 527 of each side wall 52 to form the connection structure 62 of the frame body 6. The first positioning structure 63 and the second positioning structure 64 are further coated on the back plate 5 so as to fix the arc of the back plate 5.

In addition, it should be noted that each of the openings 525 may have a large-aperture portion 528 connected to the bottom edge 522 and a small-aperture portion 528 connected to the top edge 521 as shown in FIG. 5 to FIG. 7. And a shoulder portion 530 connecting the large-aperture portion 528 and the small-aperture portion 529. This provides another alternative aspect. 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 body 6 is not provided with the second positioning. Structure 64. Similarly, in order to clearly show the binding relationship between the back plate 5 and the frame body 6, the area of the frame body 6 is shown by oblique lines in FIG. 7.

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 body 6 of the frame 2, so that the back plate 5 can produce different curvatures. The display panel D with different curvature is applicable, so the purpose of the invention can be achieved.

However, the above are only preferred embodiments of the present invention. However, when the scope of implementation of the present invention cannot be defined in this way, that is, any simple equivalent changes and modifications made according to the scope of the patent application and the description of the invention are still within the scope of the present invention patent.

Claims (8)

A curved backlight module includes: a frame including a back plate and a frame provided around 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 opposite to the top edge, and a plurality of openings. The aperture of the opening is defined by the bottom edge. Reduced toward the top edge, the frame has at least one outer side corresponding to the at least one side wall, and a plurality of connection structures disposed on the at least one outer side, and the connection structures are correspondingly connected to the A hole; a light source disposed in the frame; and a light guide plate disposed in the frame and facing the light source. According to the curved backlight module according to item 1 of the scope of patent application, wherein each opening is tapered from the bottom edge to the top edge to form a truncated cone shape. The curved backlight module according to item 1 of the scope of patent application, wherein each opening has a large-aperture portion connected to the bottom edge, a small-aperture portion connected to the top edge and having a smaller aperture 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 patent application, wherein the frame body is bonded to the back plate by insert molding, 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 scope of patent application, wherein the at least one side wall has two side portions, a middle portion located between the two side portions, and a plurality of first positioning holes. The opening is disposed at the middle portion, the first positioning hole is disposed at the two side portions, and the frame body further has a plurality of first positioning structures correspondingly connected to the first positioning hole. The curved backlight module according to item 5 of the scope of patent application, wherein the at least one side wall further has a plurality of second positioning holes, and the second positioning holes are disposed in the middle portion and adjacent to the openings. Between the holes, the frame also has a plurality of second positioning structures corresponding to the second positioning holes. The curved backlight module according to item 6 of the scope of patent application, wherein the arrangement density of the second positioning holes is greater than the arrangement density of the first positioning holes. A display device includes a curved backlight module as described in any one of items 1 to 7 of the scope of patent application, a panel mounting accessory, a plurality of optical films, and a curved backlight module provided on the curved backlight module. The 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.