CN1652668A

CN1652668A - Frame structure

Info

Publication number: CN1652668A
Application number: CN 200510059043
Authority: CN
Inventors: 谢宗勋; 郭汉斌
Original assignee: AU Optronics Corp
Current assignee: AU Optronics Corp
Priority date: 2005-03-23
Filing date: 2005-03-23
Publication date: 2005-08-10
Anticipated expiration: 2025-03-23
Also published as: CN1324539C

Abstract

Outline border structure includes first and second frame bodies. The first frame body includes first surface as well as first and second positioning lugs protruded out of the first surface. The second frame body includes first and second positioning parts. Combination between first positioning lug and first positioning part can limit movements of first and second frame bodies related to direction parallel to first surface. Combination between second positioning lug and second positioning part can limit movements of first and second frame bodies related to direction vertical to first surface.

Description

Outer frame structure

Technical Field

The present disclosure relates to backlight modules, and particularly to an outer frame structure for a backlight module.

Background

Referring to fig. 1, a schematic diagram of an outer frame structure of a backlight module of a conventional display is shown. As shown in the figure, the outer frame structure of the backlight module of the conventional display mainly comprises a first frame 10 and a second frame 20, wherein the first frame 10 is disposed on the inner surface of the second frame 20. Generally, the first frame 10 can be made of plastic or rubber, and the second frame 20 is made of metal, wherein the first frame 10 abuts against an optical element located at the center of the frame structure. The optical elements may include, for example, a display panel, a light guide plate, a diffusion plate, a prism sheet, and the like.

When assembling, a first surface 10 'of the first frame 10 is correspondingly joined to a second surface 20' of the second frame 20, wherein the first surface 10 'is provided with a plurality of first positioning bumps 101, and the second surface 20' is provided with a plurality of corresponding first positioning portions 201. As shown in fig. 1, the first positioning portion 101 is an opening, and the first positioning protrusion 201 is engaged with the first positioning portion 101 during assembly to prevent the first and

second frames

10, 20 from sliding.

However, the design of preventing the first and

second frame bodies

10 and 20 from sliding with each other is only suitable for use with a frame body having a general shape of a "square" and is not suitable for use with a long first frame body that is used for space saving or flexible use.

For the above assembly method, the conventional solution is to use an adhesive tape or an adhesive to prevent the first and

second frames

10 and 20 from being released after being combined. However, the use of tape or adhesive tends to increase the cost of materials and assembly, and the tape or adhesive is not ideal for repeated use and has a short life.

Disclosure of Invention

In view of the disadvantages of the conventional assembly method, the present invention provides an outer frame structure suitable for a backlight module, including a first frame and a second frame. The first frame body comprises a first surface, and a first positioning lug and a second positioning lug which are protruded out of the first surface. The second frame body comprises a first positioning part and a second positioning part, and the first positioning lug and the first positioning part are combined to limit the relative movement of the first frame body and the second frame body in the direction parallel to the first surface. In addition, the first frame body and the second frame body can be limited to move relatively in the direction vertical to the first surface through the combination of the second positioning lug and the second positioning part.

In a preferred embodiment, the first positioning portion has an opening, and the first positioning bump passes through the opening.

In a preferred embodiment, the second positioning protrusion is a column with a T-shaped cross section, and the second positioning portion is a guide groove.

In a preferred embodiment, the first frame is made of plastic.

In a preferred embodiment, the second frame is made of metal.

In a preferred embodiment, the first frame is combined with the inner surface of the second frame.

In a preferred embodiment, the first frame is a bar.

In order to make the aforementioned and other objects, features and advantages of the invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

FIG. 1 is a schematic diagram of a conventional outer frame structure;

FIG. 2 is a schematic diagram of an outer frame structure according to the present invention;

FIG. 3 is a schematic view of a first frame of the present invention;

FIG. 4A is a cross-sectional view of the first positioning bump parallel to the XZ plane;

FIG. 4B is a cross-sectional view of the second positioning bump parallel to the XY plane;

FIG. 5 is a schematic view of the first and second frame bodies when they are combined;

FIG. 6A is an enlarged view taken at A in FIG. 5; and

fig. 6B is an enlarged view at B in fig. 5.

Detailed Description

Referring to fig. 2, the frame structure of the present invention is suitable for a backlight module, wherein the light emitting direction of the backlight module is the same as the Z-axis direction (as shown by the arrow). The outer frame structure mainly includes a plurality of strip-shaped first frame bodies 10 and a rectangular second frame body 20, wherein each first frame body 10 is respectively disposed on an inner side surface of the second frame body 20. In this embodiment, the first frame 10 is a strip made of plastic or rubber, and the second frame 20 is made of metal, so that an optical element located at the center of the outer frame structure can be abutted and fixed by the first frame 10 during assembly.

In fig. 2, the first surface 10 'of the first frame 10 is correspondingly joined to the second surface 20' inside the second frame 20; as shown in the figure, the first surface 10 'is provided with a plurality of first bumps 101, and the second surface 20' is provided with a plurality of corresponding first positioning portions 201. In this embodiment, the first positioning portion 101 is an opening, and the first positioning protrusion 201 can be engaged with the first positioning portion 101 during assembly, so as to prevent the first and

second frames

10 and 20 from sliding relatively in a first direction (a direction parallel to the YZ plane).

Particularly, in the present embodiment, the first frame 10 further has a plurality of second positioning bumps 102, and the second frame 20 has corresponding second positioning portions 202, and the second positioning bumps 102 are combined with the second positioning portions 202, so that the first and

second frames

10 and 20 can be further prevented from moving relatively in a second direction (X-axis direction), wherein the second direction is perpendicular to the first direction.

Next, referring to fig. 3 and fig. 4A together, in which fig. 3 shows a perspective view of the first frame 10, and fig. 4A respectively shows a cross-sectional view of the first positioning bump 101 parallel to the XZ plane. As shown in fig. 4A, the first positioning protrusion 101 protrudes from the first surface 10 'in the X-axis direction, wherein the first positioning protrusion 101 may be a wedge-shaped block and has an inclined surface 101', and the first positioning protrusion 101 slides on the second surface 20 'of the second frame 20 along the direction indicated by the arrow during assembly until being engaged with the first positioning portion 201, wherein the inclined surface 101' can reduce the resistance during assembly and enable the first positioning protrusion 101 to be smoothly engaged with the first positioning portion 201. Of course, the shape of the first positioning protrusion 101 is not limited to a wedge shape, and the inclined surface 101' is not necessary, and may be a protrusion that can be engaged with the first positioning portion 201.

Next, referring to fig. 2 and fig. 4B, fig. 4B shows a cross-sectional view of the second positioning bump 102 parallel to the XY plane. In this embodiment, the second positioning protrusion 102 is a column with a T-shaped cross section, and the second positioning portion 202 has a corresponding guiding groove. As shown in fig. 3, the second positioning protrusion 102 is inserted into the second positioning portion 202 along the direction indicated by the arrow during assembly, so that the first and

second frame bodies

10 and 20 can be effectively prevented from being loosened in the X-axis direction. Of course, the shape of the second positioning protrusion 102 is not limited to a column with a T-shaped cross section, and other structures such as a column with an inverted L-shaped cross section or a column with a C-shaped cross section can be adopted to prevent the first and

second frame bodies

10 and 20 from loosening in the X-axis direction.

Next, please refer to fig. 5, fig. 6A and fig. 6B together, wherein fig. 6A and fig. 6B show enlarged views of a and B in fig. 5. As shown in the figure, when the first frame 10 is combined with the second frame 20, the first and

second bumps

101 and 102 are correspondingly combined in the first and

second positioning portions

201 and 202, respectively, so that the first and

second frames

10 and 20 can be prevented from sliding or loosening in the X-axis, Y-axis and Z-axis directions.

In summary, the present invention provides an outer frame structure, which can be applied to a backlight module and a display panel. The outer frame structure of the invention can combine the first frame body and the second frame body without adhesive tape or adhesive, and can prevent the first frame body and the second frame body from sliding or loosening, thereby not only being convenient for assembly, but also greatly saving material cost.

Although the present invention has been described in connection with the preferred embodiments, it is not intended to be limited thereto, and many modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. An outer frame structure comprising:

a first frame body including a first positioning bump, a second positioning bump and a first surface, wherein the first positioning bump and the second positioning bump protrude from the first surface; and

a second frame body including a first positioning portion and a second positioning portion;

the first positioning bump is combined with the first positioning part and limits the first frame body and the second frame body to move relatively in a direction parallel to the first surface, and the second positioning bump is combined with the second positioning part and limits the first frame body and the second frame body to move relatively in a direction perpendicular to the first surface.

2. The external frame structure of claim 1, wherein the first positioning portion has an opening, and the first positioning protrusion passes through the opening.

3. The external frame structure according to claim 1, wherein the second positioning protrusion is a column with a T-shaped cross section, and the second positioning portion is a guide groove.

4. The external frame structure of claim 1, wherein the first frame body is made of plastic.

5. The external frame structure of claim 1, wherein the first frame body is combined with the inner side surface of the second frame body.

6. The external frame structure of claim 1, wherein the first frame body is a bar.

7. A frame structure for a backlight module comprises:

a first frame body including a first positioning bump and a second positioning bump; and

a second frame body, including a first positioning portion and a second positioning portion, the first positioning bump being combined with the first positioning portion, the second positioning bump being combined with the second positioning portion; wherein,

the first positioning bump is combined with the first positioning portion and limits relative movement of the first frame and the second frame in a first direction, the second positioning bump is combined with the second positioning portion and limits relative movement of the first frame and the second frame in a second direction, the first direction is parallel to the light emitting direction of the backlight module, and the second direction is perpendicular to the first direction.

8. The external frame structure of claim 7, wherein the first positioning portion is an opening, and the first positioning protrusion passes through the opening.

9. The external frame structure according to claim 7, wherein the second positioning protrusion is a column with a T-shaped cross section, and the second positioning portion is a guide groove.

10. The external frame structure of claim 7, wherein the first frame body is made of plastic.

11. The external frame structure of claim 7, wherein the first frame body is combined with the inner side surface of the second frame body.

12. The external frame structure of claim 7, wherein the first frame body is a bar.

13. An outer frame structure comprising:

a first frame body, comprising: a first surface; a first positioning bump which is a wedge-shaped block and protrudes out of the first surface; a second positioning bump, which is a column with T-shaped cross section and protrudes out of the first surface; and

a second frame body, comprising: a second surface; a first positioning portion located on the second surface and having an opening corresponding to the first positioning bump; and a second positioning part which is positioned on the second surface and is provided with a guide groove corresponding to the second positioning lug.

14. The external frame structure of claim 13, wherein the first frame body is made of plastic.

15. The external frame structure of claim 13, wherein the first frame body is combined with an inner side surface of the second frame body.

16. The external frame structure of claim 13, wherein the first frame body is a bar.