CN108490686A - A kind of backlight module and electronic equipment - Google Patents

Abstract

This application provides a kind of backlight module and electronic equipments, the backlight module includes optical diaphragm group and shading rubber belt, optical diaphragm group includes light-emitting surface and all sides, and side face includes first side and second side, and first side is connect with second side by a cambered surface；Shading rubber belt includes the first light shielding part and the second light shielding part being connected to each other, first light shielding part is overlapped on first side corresponding position light-emitting surface, second light shielding part is overlapped on the light-emitting surface of cambered surface corresponding position, and from one end far from the first light shielding part on the extending direction of the first light shielding part, gradually increase with the overlapping area of light-emitting surface, so that from the second light shielding part one end far from the first light shielding part to the direction of the first light shielding part, the light emission luminance of light-emitting surface continuously decreases, so that light-emitting surface is never by shading rubber belt overlapped corresponding position to by shading rubber belt overlapped corresponding position, the drop of light emission luminance is gradually smaller, to improve illumination effect.

Description

A kind of backlight module and electronic equipment

technical field

The present application relates to the field of display technology, in particular to a backlight module and electronic equipment.

Background technique

With the development of mobile phones, there are more and more full-screen applications. In the full-screen application, the side connection of the optical film in the backlight module is no longer a right-angle connection, but an arc-angle connection. When the light-shielding tape shields the optical film at the junction of the arc angle, the overlapping width of the light-shielding tape and the optical film remains unchanged. Therefore, at the position where the arc angle and the side are connected, the luminous brightness of the optical film has a large drop , leading to poor luminous effect.

Contents of the invention

An embodiment of the present application provides a backlight module on the one hand, and the backlight module includes: an optical film set, including a light-emitting surface and a peripheral side, the peripheral side includes a first side and a second side, and the first The side and the second side are connected by an arc surface; the light-shielding tape includes a first light-shielding part and a second light-shielding part connected to each other, and the first light-shielding part overlaps the light-emitting surface at the corresponding position of the first side Above, the second light-shielding part overlaps the light-emitting surface at the corresponding position of the arc surface, and is in line with the extending direction of the first light-shielding part from the end far away from the first light-shielding part. The overlapping area of the light-emitting surface gradually increases.

Another aspect of the embodiment of the present application provides an electronic device, the electronic device includes a display module and the above-mentioned backlight module, and the display module is stacked on the backlight module.

The backlight module provided by the embodiment of the present application includes an optical film set and a light-shielding tape. The optical film set includes a light-emitting surface and a peripheral side. The peripheral side includes a first side and a second side. The first side and the second side pass through an arc. Surface connection; the light-shielding tape includes a first light-shielding part and a second light-shielding part connected to each other, the first light-shielding part overlaps the light-emitting surface at the corresponding position of the first side surface, and the second light-shielding part overlaps the light-emitting surface at the corresponding position of the arc surface , and from the end away from the first light-shielding portion to the extending direction of the first light-shielding portion, the overlapping area with the light-emitting surface gradually increases, so that from the end of the second light-shielding portion far away from the first light-shielding portion to the first light-shielding portion In the direction of the upper part, the luminous brightness of the light-emitting surface gradually decreases, so that the light-emitting surface has a smaller drop in luminous brightness from the corresponding position that is not overlapped by the light-shielding tape to the corresponding position that is overlapped by the light-shielding tape, so as to improve the luminous effect.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

Fig. 1 is a schematic structural view of an embodiment of a backlight module provided by the present application;

Fig. 2 is a schematic structural view of the optical film group and the light-shielding tape in Fig. 1;

Fig. 3 is an enlarged schematic diagram of part A in Fig. 2;

Fig. 4 is a schematic structural view of another embodiment in which the second light-shielding portion overlaps the light-emitting surface in Fig. 3;

Fig. 5 is a schematic structural view of the optical module group and the frame in Fig. 1;

Fig. 6 is a schematic structural diagram of an embodiment of an electronic device provided by the present application.

Detailed ways

The application will be described in further detail below in conjunction with the accompanying drawings and embodiments. In particular, the following examples are only used to illustrate the present application, but not to limit the scope of the present application. Likewise, the following embodiments are only some of the embodiments of the present application but not all of them, and all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

The terms "first", "second", and "third" in this application are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, features defined as "first", "second", and "third" may explicitly or implicitly include at least one of these features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship between the various components in a certain posture (as shown in the drawings) , sports conditions, etc., if the specific posture changes, the directional indication also changes accordingly. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in these processes, methods, products or apparatuses.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of an embodiment of a backlight module 10 provided by the present application;

Referring to FIG. 1 and FIG. 2 together, FIG. 2 is a schematic diagram of the structure of the optical film set 11 and the light-shielding tape 12 in FIG.

The optical film set 11 includes a light-emitting surface 111 and a peripheral side 112 , wherein the peripheral side 112 includes a first side 1121 and a second side 1122 , and the first side 1121 and the second side 1122 are connected by an arc 1123 .

Wherein, in this embodiment, the number of the first side 1121 and the second side 1122 are respectively two, and the two first sides 1121 are arranged opposite to each other, and the two second sides 1122 are arranged opposite to each other. In this embodiment, one first side The side 1121 and a second side 1122 are described as examples.

Further, the optical film set 11 includes a diffusion film 11a, a lower anti-reflection film 11b, and an upper anti-reflection film 11c stacked in sequence. The light-emitting surface 111 is the side of the upper anti-reflection film 11c away from the diffusion film 11a. The film 11a, the lower anti-reflection film 11b, and the upper anti-reflection film 11c are jointly formed.

The light-shielding adhesive tape 12 includes a first light-shielding portion 121 and a second light-shielding portion 122 connected to each other, wherein the first light-shielding portion 121 is overlapped on the light-emitting surface 111 corresponding to the first side 1121 , so as to be on the corresponding position of the first side 1121 Shade the optical film group 11 to prevent the optical film group 11 from leaking light through the first side 1121; The optical film set 11 shields light to prevent the optical film set 11 from leaking through the curved surface 1123 .

Referring to FIG. 3, FIG. 3 is an enlarged schematic view of part A in FIG. gradually increase, so that the luminance of the light-emitting surface 111 decreases gradually in the direction from the end of the second light-shielding portion 122 away from the first light-shielding portion 121 to the first light-shielding portion 121 .

It can be understood that when the light-emitting surface 111 emits light to form the light-emitting area S2, the corresponding position of the light-emitting area S2 that is not overlapped by the light-shielding tape 12, relative to the corresponding position overlapped by the light-shielding tape 12, has the same width in the above direction. Under normal circumstances, the light-emitting area is larger, resulting in greater luminous brightness. Therefore, if the second light-shielding portion 122 extends from the end far away from the first light-shielding portion 121 to the direction extending from the first light-shielding portion 121, the overlap with the light-emitting surface 111 If the area S1 remains unchanged, then at the initial overlapping position of the end of the second light-shielding portion 122 away from the first light-shielding portion 121, the luminous brightness of the light-emitting area S2 has a large difference, resulting in a poor luminous effect. In this embodiment, the second light-shielding portion The overlapping area S1 of the second light-shielding part 122 and the light-emitting surface 111 gradually increases in the direction extending from the end far away from the first light-shielding part 121 to the first light-shielding part 121, so that in this direction, the light-emitting area of the light-emitting region S2 gradually increases. decrease, so that the luminous brightness is also gradually reduced, so that from the corresponding position where the light-emitting surface 111 is not overlapped by the light-shielding tape 12 to the corresponding position where the light-shielding tape 12 is overlapped, the difference in luminous brightness is gradually smaller, so as to improve the luminous effect .

Referring to FIG. 3 and FIG. 4 together, FIG. 4 is a schematic structural diagram of another embodiment in which the second light shielding portion 122 overlaps the light emitting surface 111 in FIG. The light-emitting surface 111 is not overlapped, that is, the distance between the end of the second light-shielding portion 122 away from the first light-shielding portion 121 and the arc surface 1123 as shown in FIG. 3 is greater than or equal to zero as shown in FIG. 4 . When the distance between the end of the second light shielding part 122 away from the first light shielding part 121 and the arc surface 1123 is greater than zero, the end of the second light shielding part 122 far away from the first light shielding part 121 is spaced from the arc surface 1123, and is positioned toward the first light shielding part 121. The distance between the arc surface 1123 and the extending direction of the portion 121 gradually decreases, so that the second light shielding portion 122 starts to overlap between the end of the second light shielding portion 122 away from the first light shielding portion 121 and the first light shielding portion 121 On the light-emitting surface 111, when the distance between the end of the second light-shielding portion 122 away from the first light-shielding portion 121 and the arc surface 1123 is equal to zero, the second light-shielding portion 122 is away from the second light-shielding portion 122 at the second light-shielding portion 122 away from the first light-shielding portion 122. One end of the light shielding portion 121 starts to overlap the light emitting surface 111 .

When the end of the second light-shielding portion 122 away from the first light-shielding portion 121 and the light-emitting surface 111 are in the two situations described above without overlapping, the light-emitting area S2 formed by the light-emitting surface 111 can be separated from the second light-shielding portion 122 and the light-emitting surface. The starting point of 111 overlapping is D1 as shown in FIG. 3 or D2 as shown in FIG. Uniform transition, further reducing the difference in luminous brightness at the initial overlapping position, and can prevent the second light-shielding portion 122 from overlapping with the light-emitting surface 111 when the end away from the first light-shielding portion 121 overlaps the light-emitting surface 111, the second light-shielding portion 122 away from the end of the first light-shielding part 121 so that the light-emitting area S2 formed by the light-emitting surface 111 is in the shape of steps or sawtooth at the corresponding position of the end of the second light-shielding part 122 away from the first light-shielding part 121, reducing the luminous effect of the light-emitting surface 111 , and the luminous effect is not beautiful enough.

Optionally, when the distance between the end of the second light-shielding portion 122 away from the first light-shielding portion 121 and the arc surface 1123 is greater than zero and spaced apart, the end of the second light-shielding portion 122 away from the first light-shielding portion 121 and the arc surface 1123 The distance between them is less than or equal to a threshold value, so as to prevent the distance between the end of the second light shielding portion 122 away from the first light shielding portion 121 and the arc surface 1123 from being too large to cause light leakage.

Optionally, the threshold is less than or equal to 0.05mm.

Further, the second light-shielding portion 122 overlaps the light-emitting surface 111 and is arranged in an arc shape on the side 1221 facing the arc surface 1123 , so that the light-emitting area S2 formed by the light-emitting surface 111 overlaps the light-emitting surface 111 at the second light-shielding portion 122 The corresponding position is curved to improve the display effect and make it more beautiful.

Referring to FIG. 1 and FIG. 5 together, the backlight module 10 of this embodiment further includes a frame 13 . The frame 13 includes a peripheral side wall 131 and a bottom wall 132 . The peripheral side wall 131 and the bottom wall 132 are connected to form an accommodating space 101 .

Wherein, the peripheral side wall 131 includes a first side wall 1311 and a second side wall 1312, and the first side wall 1311 and the second side wall 1312 are arranged correspondingly on the first side 1121 and the second side 1122 respectively, and pass through an arc-shaped side Wall 1313 connects.

Referring to FIG. 3 , FIG. 4 and FIG. 5 together, the above-mentioned optical film group 11 is disposed in the accommodating space 101 and spaced apart from the peripheral sidewall 131 .

Wherein, the distance between the arc surface 1123 and the second side wall 1312 gradually increases from the end away from the first side 1121 to the extending direction of the first side 1121 , and the end of the second light shielding portion 122 away from the first light shielding portion 121 It is flush with the end of the arc surface 1123 away from the first side 1121 .

It can be understood that due to the increasing application of narrow frames, the distance between the second side wall 1312 and the second side 1122 of the optical film set 11 is relatively small. The corresponding position of the side wall 1312 does not need the light-shielding tape 12 for light-shielding, but in this embodiment, the arc surface 1123 extends from the end away from the first side 1121 to the direction of the first side 1121 , and between the second side wall 1312 The distance gradually increases, then the distance between the arc surface 1123 and the second side wall 1312 from the end away from the first side wall 1121 will be greater than the distance between the second side wall 1312 and the second side wall 1122, that is It is greater than the distance that does not require light-shielding tape 12 for light-shielding. Therefore, in this embodiment, the end of the second light-shielding portion 122 away from the first light-shielding portion 121 is flush with the end of the arcuate surface 1123 away from the first side 1121 . The light is shielded at the starting position far from the end of the first side 1121 , which can prevent the risk of light leakage due to the gradual increase of the distance between the second side walls 1312 of the curved surface 1123 .

Further referring to FIG. 1 , the backlight module 10 of this embodiment further includes a light guide plate 14 , which is disposed on the side of the optical film set 11 away from the light-emitting surface 111 and stacked with the optical film set 11 .

Wherein, the light guide plate 14 includes a light emitting surface 141 and a light incident surface 142 , and the optical film set 11 is disposed on the light emitting surface 141 .

Optionally, the first light shielding portion 121 in this embodiment is overlapped at a position corresponding to one side of the light incident surface 141 of the light guide plate 14 and the light emitting surface 111 .

Referring to FIG. 6, FIG. 6 is a schematic structural diagram of an embodiment of an electronic device 20 provided by the present application. The electronic device 20 of this embodiment includes a display module 21 and the backlight module 10 in the above-mentioned embodiment. The display module 21 is stacked on the on the backlight module 10 .

The backlight module provided in the embodiment of the present application includes an optical film set and a light-shielding tape. The optical film set includes a light-emitting surface and a peripheral side. The peripheral side includes a first side and a second side. The first side and the second side pass through an arc. Surface connection; the light-shielding tape includes a first light-shielding part and a second light-shielding part connected to each other, the first light-shielding part overlaps the light-emitting surface at the corresponding position of the first side surface, and the second light-shielding part overlaps the light-emitting surface at the corresponding position of the arc surface , and from the end far away from the first light shielding part to the extending direction of the first light shielding part, the overlapping area with the light emitting surface gradually increases, so that from the end of the second light shielding part far away from the first light shielding part to the first light shielding part In the direction of the upper part, the luminous brightness of the light-emitting surface gradually decreases, so that the light-emitting surface has a smaller drop in luminous brightness from the corresponding position that is not overlapped by the light-shielding tape to the corresponding position that is overlapped by the light-shielding tape, so as to improve the luminous effect.

The above descriptions are only part of the embodiments of the application, and are not intended to limit the scope of protection of the application. All equivalent devices or equivalent process transformations made by using the contents of the specification and drawings of the application, or directly or indirectly used in other related All technical fields are equally included in the patent protection scope of the present application.

Claims (10)

1. A backlight module, characterized in that the backlight module comprises: The optical film group includes a light-emitting surface and a peripheral side, the peripheral side includes a first side and a second side, and the first side and the second side are connected by an arc surface; The light-shielding tape includes a first light-shielding part and a second light-shielding part connected to each other, the first light-shielding part overlaps the light-emitting surface at the corresponding position on the first side, and the second light-shielding part overlaps the light-emitting surface at the corresponding position of the first side surface. The arc surface corresponds to the position of the light emitting surface, and the overlapping area with the light emitting surface gradually increases from an end away from the first light shielding portion to the extending direction of the first light shielding portion. 2 . The backlight module according to claim 1 , wherein an end of the second light-shielding portion away from the first light-shielding portion is not overlapped with the light-emitting surface. 3 . 3 . The backlight module according to claim 2 , wherein a distance between an end of the second light-shielding portion away from the first light-shielding portion and the arc surface is greater than or equal to zero. 4 . 4. The backlight module according to claim 1, wherein the second light-shielding portion overlaps the light emitting surface and is arranged in an arc on a side facing the arc surface, so that the light shield formed by the light emitting surface The light-emitting area is arc-shaped at the corresponding position where the second light-shielding portion overlaps the light-emitting surface. 5. The backlight module according to claim 1, wherein the backlight module further comprises a frame, the frame includes a peripheral side wall and a bottom wall, and the peripheral side wall is connected to the bottom wall to form a An accommodating space, the optical film group is disposed in the accommodating space and spaced apart from the peripheral side wall. 6. The backlight module according to claim 5, wherein the peripheral side wall comprises a first side wall and a second side wall, and the first side wall and the second side wall are respectively connected to the The first side and the second side are correspondingly arranged and connected by an arc-shaped side wall. 7. The backlight module according to claim 6, wherein the arc surface is in the same direction as the first side in the extending direction from the end of the arc surface away from the first side to the first side. The distance between the two side walls increases gradually, and the end of the second light-shielding portion away from the first light-shielding portion is arranged flush with the end of the arc surface away from the first side. 8. The backlight module according to claim 1, wherein the backlight module further comprises a light guide plate, and the light guide plate is arranged on the side of the optical film group away from the light-emitting surface and the The optical film group is stacked. 9. The backlight module according to claim 8, wherein the light guide plate comprises a light incident surface and a light exit surface, the optical module is arranged on the light exit surface, and the first light shielding portion overlaps A position corresponding to the light emitting surface on the side of the light guide plate away from the light incident surface. 10. An electronic device, characterized in that the electronic device comprises a display module and the backlight module according to any one of claims 1 to 9, and the display module is stacked on the backlight module .