CN101666448B - Backlight module and flat panel display with improved snap structure - Google Patents

Abstract

The present invention discloses a backlight module and a flat-panel display with an improved snap-fit structure. The backlight module comprises a frame and a plastic frame, and the frame comprises a bottom surface, a side wall and a plurality of blocks. The edge of the bottom surface is provided with a plurality of notches. The side wall is substantially perpendicular to the edge of the bottom surface, and a plurality of recessed portions are provided on the side wall, and each recessed portion corresponds to a notch. Each block is substantially perpendicular to the bottom surface and corresponds to a notch. The edge of the plastic frame is provided with a plurality of snap-fit portions and a plurality of grooves, and each groove is connected to a corresponding recessed portion, and each snap-fit portion is connected to a corresponding block, and each snap-fit portion is suitable for passing through a corresponding block and a recessed portion, so that the block abuts against the snap-fit portion.

Description

Backlight module and flat panel display with improved snap structure

technical field

The invention relates to a backlight module and a flat display, in particular to a backlight module and a flat display with an improved locking structure.

Background technique

Displays with advanced functions have gradually become an important feature of today's consumer electronics products, among which flat-panel displays have gradually become widely used in various electronic devices such as televisions, mobile phones, personal digital assistants (PDAs), digital cameras, computer screens or notebook computer screens A monitor with a high-resolution color screen. The plastic frame of the liquid crystal display is generally made of plastic injection molding, and is manufactured separately according to the requirements of the display at 17:00, 19:00, or 21:00, that is, each specification of the plastic frame requires a plastic molding mold to Manufacture different rubber frames for different profiles.

The plastic frame is made of plastic and has elasticity, and the frame is made of metal. In the conventional backlight module, hooks are provided on the plastic frame, and locking members are provided on the frame, so that the plastic frame and the frame of the backlight module can be fixed. However, since the plastic frame of the backlight module is made of plastic and has a thin structure, the hooks are not smoothly engaged with the locking components due to improper force applied during assembly, causing the plastic frame to arch inward and deform. In this way, the inwardly deformed plastic frame will cause difficulty in assembly and fragmentation of the panel, and it will also easily cause the size of the backlight module to fail to meet the specifications.

Contents of the invention

In view of this, the present invention develops a backlight module and a flat panel display with an improved engaging structure to solve the problems of the prior art.

The invention provides a backlight module, which includes a frame and a plastic frame. The frame includes a bottom surface, side walls and a plurality of stops. The edge of the bottom surface is provided with a plurality of notches. The edge of the side wall substantially perpendicular to the bottom surface is provided with a plurality of inner recesses, and each inner recess corresponds to a notch. Each block is substantially perpendicular to the bottom surface and corresponds to a notch. The edge of the plastic frame is provided with a plurality of engaging parts and a plurality of grooves, each groove is corresponding to an inner concave part, each engaging part is corresponding to a stopper, and each engaging part is suitable for A corresponding one of the stoppers and an inner concave part is passed through, so that the stoppers abut against the engaging part.

In an embodiment of the present invention, each of the inner recesses includes a guiding structure adapted to guide each inner recess to a groove.

In an embodiment of the present invention, the frame includes at least one long side and at least one short side, and the notches are disposed on the long side.

In one embodiment of the present invention, a flat panel display is provided, which includes a display panel and a backlight module. The backlight module includes a frame and a plastic frame. The frame includes a bottom surface, side walls and a plurality of stops. The edge of the bottom surface is provided with a plurality of notches. The edge of the side wall substantially perpendicular to the bottom surface is provided with a plurality of inner recesses, and each inner recess corresponds to a notch. Each block is substantially perpendicular to the bottom surface and corresponds to a notch. The edge of the plastic frame is provided with a plurality of engaging parts and a plurality of grooves, each groove is corresponding to an inner concave part, each engaging part is corresponding to a stopper, and each engaging part is suitable for A corresponding one of the stoppers and an inner concave part is passed through, so that the stoppers abut against the engaging part.

In order to make the above content of the present invention more obvious and understandable, the following preferred embodiments are specifically cited below, and in conjunction with the accompanying drawings, the detailed description is as follows:

Description of drawings

1 is an exploded view of a backlight module of a flat panel display according to an embodiment of the present invention;

Fig. 2 is a structural diagram of the framework of Fig. 1;

Figure 3 is a partial enlargement of Figure 2;

Figure 4 shows the frame and plastic frame before being combined;

Figure 5 is a partially enlarged view of Figure 4;

Figure 6 is a diagram showing the combined frame and plastic frame;

Fig. 7 is a partial enlarged view in the direction of arrow E in Fig. 6;

Fig. 8 is a partial enlarged view in the direction of arrow F in Fig. 6;

Fig. 9 is a sectional view of Fig. 6 along the 6-6' section line;

Fig. 10 is a cross-sectional view after the frame is combined with the plastic frame, and the reflection plate, the light guide plate and the optical film group are installed.

Description of main component symbols:

50 flat panel displays 100 backlight modules

101 Display panel 102 Plastic frame

104 Frame 106 Reflector

108 Light guide plate 110 Optical film group

112 light source 114 reflector

1022 Engaging part 1024 Groove

1042 Bottom 1044 Gap

1045 block 1046 side wall

1047 Accommodating area 1048 Inner recess

1049 boot structure

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced. The directional terms mentioned in the present invention, such as "up", "down", "front", "front and rear", "right", "top", "bottom", "horizontal", "vertical", etc., are for reference only. Attached directions. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

In the following embodiments, in different drawings, the same or similar parts are denoted by the same symbols.

Please refer to FIG. 1 , which is an exploded view of a flat panel display 50 according to an embodiment of the present invention. The flat panel display 50 may include a display panel 101 , a plastic frame 102 , a frame 104 , a reflector 106 , a light guide plate 108 , an optical film set 110 and a light source (such as a cold cathode ray tube) 112 . An optical film set 110 is arranged on the light guide plate 108. The optical film set 110 may include a diffusion film, a prism film, a brightening film, a composite optical film or a combination thereof. The function of the optical film set 110 is to correct the light emitted by the light source 112. Direction, Diffusion Angle and Increased Brightness. One side of the light source 112 may be covered with a reflector 114, and the reflector 114 is mainly to increase the utilization rate of light. The light generated by the light source 112 passes through the display panel 101 after being processed by elements such as the reflector 106 , the light guide plate 108 , and the optical film set 110 , so that the pixels on the display panel 101 produce different gray scales to generate images. It should be noted that the present invention is not limited thereto, and can also be adjusted according to actual needs, such as omitting the light guide plate and applying to a direct-type backlight module.

Please refer to FIG. 2 and FIG. 3 , FIG. 2 is a structural view of the frame 104 , and FIG. 3 is a partially enlarged view of FIG. 2 . The frame 104 can be made of metal sheet metal parts, such as iron, aluminum, steel or other suitable metal materials or alloys. The frame 104 can be roughly rectangular, and the sidewalls 1046 surrounding the bottom surface 1042 are approximately perpendicular to the edge of the bottom surface 1042 to form an accommodating area 1047 (shown in FIG. 6 ). The accommodating area 1047 can place reflective plates and components such as light guide plates. The edge of the bottom surface 1042 of the frame 104 is provided with a plurality of notches 1044 , and the notches 1044 extend from the bottom surface 1042 to the sidewall 1046 , that is, the notches 1044 straddle the bottom surface 1042 and the sidewall 1046 . The sidewall 1046 is provided with a plurality of recesses 1048 , and each recess 1048 corresponds to a notch 1044 . It should be noted that the recesses 1048 are recessed from the original position of the sidewall 1046 toward the accommodating area 1047 . In addition, the frame 104 is further provided with a plurality of stoppers 1045 , each stopper 1045 is substantially perpendicular to the bottom surface 1042 and is disposed at a position corresponding to the notch 1044 . In addition, the frame 104 includes at least one long side and at least one short side. Since the long side is easier to deform than the short side, a plurality of notches 1044 can be provided on at least one long side of the frame 104 for the purpose of setting the engaging structure. , especially when the side thickness of the long side is thinner, the plastic frame 102 can be firmly combined with the frame 104 . However, the present invention is not limited thereto, and a notch 1044 can also be provided on the short side according to requirements.

Please refer to FIG. 4 and FIG. 5 . FIG. 4 shows the frame 104 and the plastic frame 102 before assembly, and FIG. 5 is a partially enlarged view of FIG. 4 . The plastic frame 102 is a rectangular structure hollowed out in the center, and its edge is provided with a plurality of engaging portions 1022 and a plurality of grooves 1024, each groove 1024 is corresponding to an inner concave portion 1048 on the side wall 1046 of the frame 104, each An engaging portion 1022 corresponds to a block 1045 of the frame 104 . The inner concave portion 1048 may be substantially U-shaped. On the projection plane parallel to the bottom surface 1042, the distance from the periphery of the side wall 1046 to the inner recess 1048 is smaller than the distance from the periphery of the side wall 1046 to the stopper 1045, in other words, there is a gap d( as shown in Figure 9).

Please refer to FIG. 6 to FIG. 9, FIG. 6 shows the combined frame 104 and plastic frame 102, FIG. 7 is a partial enlarged view of FIG. 6 in the direction of arrow E, and FIG. 8 is a partial enlarged view of FIG. 6 in the direction of arrow F. , Figure 9 is a cross-sectional view of Figure 6 along the 6-6' section line. When the flat panel display 50 of the present invention is assembled, the engaging portion 1022 of the plastic frame 102 is pressed into the notch 1044 of the frame 104, so that the engaging portion 1022 is inserted into the gap between the inner concave portion 1048 and the stopper 1045, that is to say Each engaging portion 1022 is adapted to pass between a corresponding blocking block 1045 and an inner concave portion 1048 , so that the blocking block 1045 abuts against the engaging portion 1022 . At this time, as shown in FIG. 7 , each inner concave portion 1048 includes a guiding structure 1049 adapted to guide each inner concave portion 1048 to a groove 1024 . A guiding structure 1049 can be two hypotenuses connecting the sidewall 1046 and the inner recess 1048 . In addition, the side of the concave portion 1048 facing the groove 1024 can be a plane or an inclined plane, which can be adjusted according to actual needs. The upwardly protruding stopper 1045 of the frame 104 can just abut against the plastic frame 102 , so that the plastic frame 102 is not easily detached from the frame 104 , thereby improving the problem of the plastic frame 11 bending inwardly. In addition, the side wall 1046 of the frame 104 wraps around the periphery of the plastic frame 102 , so that the plastic frame 102 is not easily deformed by external force.

Please refer to FIG. 1 and FIG. 10 . FIG. 10 is a cross-sectional view of a flat-panel display after the frame 104 and the plastic frame 102 are combined, and the reflector 106 , the light guide plate 108 , the optical film set 110 and other components are assembled. After the frame 104 is combined with the plastic frame 102 , the light source 112 can be placed in one side edge of the frame 104 , and then covered with the reflector 114 , and the reflector 114 can be fixed on the side edge of the frame 104 . Afterwards, the light guide plate 108 is placed in the accommodation area 1047 of the frame 104, and the light guide plate 108 is inserted into the opening of the reflector 114 to be installed and positioned, and then the optical film group 110 is placed in the light guide plate 108 in sequence. above. Finally, the display panel 101 is placed on the top of the optical film set 110 , and the display panel 101 is supported by the plastic frame 102 to complete the assembly of the flat panel display 50 . The above assembly methods are just examples, but the present invention is not limited thereto, and can also be adjusted according to actual needs.

After the plastic frame 102 and the frame 104 of the present invention are assembled, the engaging portion 1022 of the plastic frame 102 can fit into the notch 1044 of the frame 104 , and the inner concave portion 1048 of the frame 104 is guided to the groove 1024 of the plastic frame 102 . The upwardly protruding stopper 1045 of the frame 104 can just resist the plastic frame 102 to form a block, so that the plastic frame 102 is not easy to jump off or deform when it is squeezed, and of course the light source 112 will not be crushed. situation. In addition, the plastic frame 102 just blocks the notch 1044 of the frame 104 , so it can effectively prevent the light source 112 from leaking out of the notch 1044 to cause light leakage, thereby improving the light output efficiency of the backlight module. To sum up, the stopper 1045 provided on the frame 104 of the present invention fixes the plastic frame 102, avoiding the thin plastic frame 102 that cannot be effectively fixed and causing inner arching, resulting in difficulty in assembly, easy breakage and easy damage to the size of the backlight module. Issues such as non-compliance with specifications.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any skilled person can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore The scope of protection of the present invention should be defined by the scope of the appended patent application.

Claims (6)

1. A backlight module, characterized in that, said backlight module comprises: A framework, said framework comprising: A bottom surface, the edge of the bottom surface is provided with a plurality of gaps; at least one long side and at least one short side, the notch is arranged on the long side; A side wall, the side wall is approximately vertically located on the edge of the bottom surface, the notch extends from the bottom surface to the side wall, and the side wall is provided with a plurality of inner recesses, each a recess corresponding to a notch; and a plurality of stoppers, each stopper is substantially perpendicular to the bottom surface and corresponds to a notch; and A plastic frame, the edge of the plastic frame is provided with a plurality of engaging parts and a plurality of grooves, each groove is corresponding to an inner concave part, each engaging part is corresponding to a stopper, each The engaging portion is adapted to pass between a corresponding block and an inner concave portion, so that the blocking block abuts against the engaging portion. 2. The backlight module according to claim 1, characterized in that, on a projection plane parallel to the bottom surface, the distance from the periphery of the side wall to an inner recess is smaller than the distance from the periphery of the side wall to Corresponding to the distance of the stopper. 3. The backlight module as claimed in claim 1, wherein each of the concave portions comprises a guiding structure adapted to guide each concave portion to a groove. 4. A flat display, characterized in that said flat display comprises: a display panel for displaying images; A backlight module, the backlight module includes: A framework, said framework comprising: A bottom surface, the edge of the bottom surface is provided with a plurality of gaps; at least one long side and at least one short side, the notch is arranged on the long side; A side wall, the side wall is approximately vertically located on the edge of the bottom surface, the notch extends from the bottom surface to the side wall, and the side wall is provided with a plurality of inner recesses, each a recess corresponding to a notch; and a plurality of stoppers, each stopper is substantially perpendicular to the bottom surface and corresponds to a notch; and A plastic frame, used to support the display panel, the edge of the plastic frame is provided with a plurality of engaging parts and a plurality of grooves, each groove is corresponding to an inner concave part, each engaging part Corresponding to a block, each engaging portion is adapted to pass between a corresponding block and an inner concave portion, so that the block abuts against the engaging portion. 5. The flat-panel display according to claim 4, wherein on a projection plane parallel to the bottom surface, the distance from the periphery of the side wall to an inner recess is smaller than the periphery of the side wall The distance to the corresponding stop. 6. The flat-panel display as claimed in claim 4, wherein each of the concave portions comprises a guiding structure adapted to guide each concave portion to a groove.

Images