CN102901005A - Light emitting module and display device - Google Patents

Abstract

A light emitting module comprises a shell, a positioning piece and at least one optical membrane. The positioning piece is convexly arranged on the shell. The optical diaphragm is provided with at least one hollow part and at least one convex part, the hollow part and the convex part are located on at least one edge of the optical diaphragm in an adjacent mode, the hollow part is provided with a first side and a second side opposite to the first side, and the convex part is arranged on the periphery of the hollow part and extends from the first side to the second side. The optical diaphragm is arranged on the shell, and the positioning piece penetrates through the hollow part. In addition, the projection area of the positioning element on the optical film is at least partially overlapped with the convex part or the second side. The invention also discloses a display device applying the light-emitting module. Therefore, when the optical film is subjected to external force and wants to be separated from the positioning piece along the light-emitting direction parallel to the light-emitting module, the optical film can be blocked by the positioning piece and cannot be separated from the positioning piece, and the excellent positioning effect is achieved.

Description

Light emitting module and display device

technical field

The present invention relates to a light-emitting module and a display device, and in particular to a light-emitting module and a display device capable of improving the positioning effect of an optical film and a casing.

Background technique

Flat panel display devices have been used in various electronic products due to their advantages of low power consumption, light weight, light weight, and low radiation, and are gradually replacing traditional cathode ray tubes (Cathode Ray Tubes). , CRT) display device.

Generally speaking, a flat panel display device includes a display panel and a backlight module, and the backlight module provides light to the display panel to allow the display panel to display images. In the backlight module, a plurality of optical films are used to adjust the light properties, thereby improving or achieving a specific light output performance. However, in the known backlight module, the connection strength between the optical film and its casing is not good, so that the optical film often shifts unexpectedly during transportation, and even jumps out of the original preset position, so it is difficult to ensure The positioning makes the backlight module unable to provide proper optical characteristics, or even fail to operate normally.

Therefore, how to provide a light-emitting module and a display device that can improve the positioning effect of the optical film and the housing is one of the current important issues.

Contents of the invention

The object of the present invention is to provide a light-emitting module and a display device that can improve the positioning effect of the optical film and the casing.

The present invention can be realized by adopting the following technical solutions.

A light-emitting module of the present invention includes a casing, a positioning member and at least one optical film. The positioning member is protruded from the casing, and the optical film has at least one hollow portion and at least one convex portion, wherein the hollow portion and the convex portion are adjacent to at least one edge of the optical film, and the hollow portion has a first side and an opposite On the second side of the first side, the convex part is arranged on the periphery of the hollow part and extends from the first side to the second side. In addition, the optical film is disposed on the casing, and the positioning member passes through the hollow portion, and the projected area of the positioning member on the optical film at least partially overlaps with the convex portion or the second side.

In one embodiment, the housing is made of metal or plastic.

In one embodiment, the positioning member and the housing are integrally formed or fixed to each other.

In one embodiment, the positioning member has at least one bent portion, and the projected area of the bent portion on the optical film at least partially overlaps with the convex portion or the second side of the optical film.

In one embodiment, the vertical section of the positioning member is substantially L-shaped, arc-shaped, hook-shaped, T-shaped, or mushroom head-shaped.

In one embodiment, when the vertical section of the positioning member is in the shape of a mushroom head, the hollow part is a round hole, and the convex part is arranged around the round hole.

In one embodiment, when at least one protrusion is a plurality of protrusions, the protrusions are arranged around the circular hole.

In one embodiment, the positioning member is disposed on an edge of the casing.

In one embodiment, the light emitting module is a backlight module or a lighting module.

To achieve the above object, a display device according to the present invention includes a display panel and a light emitting module as described above, and the light emitting module emits light to the display panel.

As mentioned above, in the light-emitting module and the display device of the present invention, the optical film has at least one hollow portion and at least one convex portion, the hollow portion has opposite first and second sides, and the convex portion faces from the first side toward The second side is extended, so that the convex part can form a structure similar to an elastic sheet, that is, the convex part has elasticity. During the assembly process of the optical film and the housing, when the positioning member passes through the hollow part, the convex part will be squeezed and bent, so that the optical film can be easily assembled on the housing. After assembly, the convex part returns to its original state by elastic restoring force. In addition, the structure of the positioning member of the present invention is specially designed, for example, its vertical section is substantially L-shaped, arc-shaped, hook-shaped, T-shaped, mushroom head-shaped or other shapes, so that the projected area of the positioning member on the optical film At least partially overlaps the protrusion or the second side. In this way, when the optical film is subjected to an external force and intends to separate from the positioning member parallel to the light emitting direction of the light-emitting module, it will be blocked by the positioning component and cannot be separated, thereby achieving an excellent positioning effect.

Description of drawings

Fig. 1 is a partial schematic diagram of a light emitting module according to a preferred embodiment of the present invention;

Fig. 2 is a schematic diagram of the housing and the positioning member shown in Fig. 1;

Fig. 3 is the schematic diagram of the optical film shown in Fig. 1;

Fig. 4 is a schematic diagram of the process of assembling the optical film to the housing according to the preferred embodiment of the present invention;

Fig. 5 is a schematic diagram of another light-emitting module according to a preferred embodiment of the present invention;

6A to 6E are schematic diagrams of various variations of the positioning member in the preferred embodiment of the present invention;

Fig. 7 and Fig. 8 are schematic diagrams of various variations of the cooperation between the positioning member and the optical film in the preferred embodiment of the present invention; and

FIG. 9 is a schematic diagram of a display device according to a preferred embodiment of the present invention.

Description of main component symbols:

1, 1a: light emitting module

11, 11a: Housing

12. 12a～12e: Positioning parts

13, 13d, 13e: Optical film

131: Hollow part

132: convex part

2: Display device

B, B1, B2: bending part

DP: display panel

E1, E2: end

LG: Light guide plate

S1: First side

S2: second side

Detailed ways

A light emitting module and a display device according to preferred embodiments of the present invention will be described below with reference to related drawings, wherein the same components will be described with the same reference numerals.

Fig. 1 is a partial schematic diagram of a light emitting module 1 according to a preferred embodiment of the present invention. The light emitting module 1 includes a housing 11 , a positioning member 12 and at least one optical film 13 . FIG. 2 is a schematic diagram of the housing 11 and the positioning member 12 in FIG. 1 , and FIG. 3 is a schematic diagram of the optical film 13 in FIG. 1 . In this embodiment, the light emitting module 1 is a backlight module; and in other embodiments, the light emitting module 1 can also be a lighting module and can be used in conjunction with other components.

Please refer to FIG. 1 to FIG. 3 , in this embodiment, the material of the casing 11 is not limited, and it may be, for example, metal or plastic. The casing 11 can be, for example, one of a front frame, a plastic frame, a back plate, or any combination of the three. Here, the casing 11 is described by taking a metal backplane as an example. In addition, since the light emitting module 1 of this embodiment takes a backlight module as an example, as shown in FIG. 2 , the light emitting module 1 further includes a light guide plate LG disposed on the casing 11 .

The positioning member 12 is protruded from the housing 11, and can be integrally formed with the housing 11 or fixed to each other; here, the positioning member 12 and the housing 11 are integrally formed as an example, and can be formed, for example, by stamping the housing. The positioning piece 12 is formed. In other embodiments, when the casing 11 is a plastic frame, injection molding can be used to form the positioning member 12 . In a specific embodiment, the positioning member 12 and the housing 11 can be manufactured separately first, and then the positioning member 12 and the housing 11 are fixed to each other through various known joining methods (such as welding).

In addition, when the casing 11 is a plastic frame, the setting of the metal backplane can be omitted, that is, the casing 11 can replace the function of the backplane, thereby saving the development of the metal backplane mold. In addition, in this embodiment, the positioning member 12 is disposed on an edge of the casing 11 . However, in other specific embodiments, the positioning member 12 can be arranged at other positions of the housing 11, and the location of the positioning member 12 is not limited to this embodiment, it only needs to be able to provide the positioning function of the optical film 13, that is, Can.

In this embodiment, the light-emitting module 1 has at least one optical film 13, which can be a brightness enhancement film, a diffusion film, a polarizing film, an anti-reflection film, an anti-glare film, or a wide viewing angle film. The optical film 13 has at least one hollow portion 131 and at least one convex portion 132 , wherein the hollow portion 131 and the convex portion 132 are adjacent to at least one edge of the optical film 13 . The hollow portion 131 has a first side S1 and a second side S2 oppositely disposed. The convex portion 132 is disposed around the hollow portion 131 and extends from the first side S1 to the second side S2. Through this design, the protruding portion 132 forms a structure similar to an elastic sheet.

When the optical film 13 is assembled with the housing 11 , the optical film 13 is disposed on the housing 11 , and the positioning member 12 passes through the hollow portion 131 . After the assembly is completed, the projected area of the positioning member 12 on the optical film 13 at least partially overlaps with the protrusion 132 . In this embodiment, the structure of the positioning member 12 is specially designed so that the projected area of the positioning member 12 on the optical film 13 can at least partially overlap with the protrusion 132 . 6A is a schematic diagram of a vertical section of the positioning member 12 of this embodiment. As shown in FIG. 6A, the vertical section of the positioning member 12 is substantially L-shaped as an example. The projected area of the folding portion B on the optical film 13 at least partially overlaps with the convex portion 132 of the optical film 13 . Thereby, when the optical film 13 is subjected to an external force and intends to leave the positioning member 12, it will be blocked by the positioning member 12 and cannot be separated, thereby achieving an excellent positioning effect.

In addition, it should be noted that FIG. 4 is a schematic diagram of a process of assembling the optical film 13 onto the housing 11. During the assembly process of the optical film 13 and the housing 11, when the positioning member 12 passes through the hollow portion 131, The convex portion 132 is pressed and bent so that the optical film 13 can be easily assembled on the housing 11 . After the assembly is completed, the convex portion 132 can return to its original state through the elastic restoring force, as shown in FIG. 1 .

In other embodiments, the assembly and relative position of the optical film and the positioning member may also have other forms. Fig. 5 is a schematic diagram of another light-emitting module 1a. The main difference from the light-emitting module 1 is that the bending direction of the positioning part 12a of the light-emitting module 1a is different from that of the positioning part 12. In this way, after the assembly is completed, when the optical film 13 When the positioning member 12a is disposed on the housing 11a and passes through the hollow portion 131 , the projected area of the positioning member 12a on the optical film 13 at least partially overlaps with the second side S2 of the hollow portion 131 . In this aspect, the elastic force of the protruding portion 132 can also be used to achieve the effect of easy assembly.

In addition to the above-mentioned shape of the positioning member 12, the positioning member 12 can have many variations to achieve the same excellent positioning effect, as illustrated below.

As shown in FIG. 6B, the positioning member 12b is arc-shaped. As shown in FIG. 6C , the positioning member 12 c is in the shape of a hook, and the positioning member 12 c has two bending portions B1 and B2 . As shown in FIG. 6D, the positioning member 12d is T-shaped. In the aspect shown in FIG. 6D , as shown in FIG. 7 , the corresponding optical film 13 d may have two protrusions 132 to form two elastic-like structures corresponding to the two ends E1 and E2 of the T shape.

As shown in FIG. 6E, the positioning member 12e is in the shape of a mushroom head. In this state, as shown in FIG. The periphery of the round hole of part 131. In addition, in order to enhance the positioning effect, in the embodiment shown in FIG. 8 , four convex portions 132 are provided on the periphery of the circular hole of the hollow portion 131 . However, the number and size of the protrusions 132 can be adjusted according to the size of the circular hole of the hollow portion 131 , and are not limited to the embodiment shown in FIG. 8 .

FIG. 9 is a schematic diagram of a display device 2 according to a preferred embodiment of the present invention. The display device 2 includes a display panel DP and the light emitting module 1 shown in FIGS. 1 and 4 . Wherein, the light emitting module 1 emits light to the display panel DP to provide the light source required by the display panel DP. In this embodiment, the display panel DP is an example of a liquid crystal display panel. In addition, in addition to the light emitting module 1 shown in FIGS. light source.

To sum up, in the light-emitting module and the display device of the present invention, the optical film has at least one hollow portion and at least one convex portion, the hollow portion has opposite first and second sides, and the convex portion extends from the first side toward The second side is extended, so that the convex part can form a structure similar to an elastic sheet, that is, the convex part has elasticity. During the assembly process of the optical film and the housing, when the positioning member passes through the hollow part, the convex part will be squeezed and bent, so that the optical film can be easily assembled on the housing. After assembly, the convex part returns to its original state by elastic restoring force. In addition, the structure of the positioning member of the present invention is specially designed, for example, its vertical section is substantially L-shaped, arc-shaped, hook-shaped, T-shaped, mushroom head-shaped or other shapes, so that the projected area of the positioning member on the optical film at least partially overlaps the protrusion or the second side. In this way, when the optical film is subjected to an external force and intends to leave the positioning member, it will be blocked by the positioning member and cannot be separated, thereby achieving an excellent positioning effect.

The above description is only illustrative, not restrictive. Any equivalent modification or change made without departing from the spirit and scope of the present invention shall be included within the scope defined in the claims.

Claims (10)

1. A light-emitting module, characterized in that, comprising: a shell; a positioning piece protruding from the housing; and At least one optical film has at least one hollow portion and at least one convex portion, the hollow portion and the convex portion are adjacent to at least one edge of the optical film, the hollow portion has a first side and a The protrusion is disposed on the periphery of the hollow portion on a second side opposite to the first side, and extends from the first side toward the second side; Wherein, the optical film is arranged on the housing, and the positioning member passes through the hollow portion, and the projected area of the positioning member on the optical film is the same as that of the convex portion or the first The two sides at least partially overlap. 2 . The light emitting module according to claim 1 , wherein the housing is made of metal or plastic. 3 . The light emitting module according to claim 1 , wherein the positioning member and the housing are integrally formed or fixed to each other. 4 . 4. The light-emitting module according to claim 1, wherein the positioning member has at least one bent portion, and the projected area of the bent portion on the optical film is the same as that of the optical film. The convex portion or the second side at least partially overlaps. 5. The light-emitting module according to claim 1, wherein the vertical section of the positioning member is substantially L-shaped, arc-shaped, hook-shaped, T-shaped, or mushroom head-shaped. 6. The light-emitting module according to claim 5, wherein when the vertical section of the positioning member is in the shape of a mushroom head, the hollow part is a round hole, and the convex part is arranged at the center of the round hole around. 7. The light emitting module according to claim 6, wherein the at least one protrusion is a plurality of protrusions, and the protrusions are arranged around the periphery of the circular hole. 8. The light emitting module according to claim 1, wherein the positioning member is disposed on an edge of the housing. 9. The light emitting module according to claim 1, wherein the light emitting module is a backlight module or a lighting module. 10. A display device, characterized in that it comprises: a display panel; and A light emitting module according to any one of claims 1 to 9, which emits light to the display panel.

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