TWI411851B - Backlight module and flat display device with improvement fixing construction - Google Patents

Abstract

A flat display device and a backlight module therein are proposed. The backlight module includes a bezel and a frame. The bezel includes a bottom plane having multiple openings on its periphery, side walls perpendicular to the bottom plane, and a plurality of obstacles perpendicular to the bottom plane. Multiple indentations on one of the side walls, and each recess corresponds to one of the openings. The frame includes multiple engaging portions and multiple recesses, each recess corresponds to one of the engaging portions. Each engaging portion corresponds one of the obstacles. Each engaging portion adapted to be engaged between the corresponding obstacle and the indentation, so that the obstacle can hold the engaging portion to avoid the frame dissembling from the bezel.

Description

Backlight module with improved snap structure and flat panel display

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

Advanced display has become an important feature of today's consumer electronics products. Flat-panel displays have become widely used in a variety of electronic devices such as televisions, mobile phones, personal digital assistants (PDAs), digital cameras, computer screens or notebook screens. High resolution color screen display. The plastic frame of the liquid crystal display is generally plastic injection molding, which is separately manufactured according to the requirements of the display, such as 17吋, 19吋, or 21吋, that is, each type of plastic frame requires a plastic molding die to Different profiles make different plastic frames.

The plastic frame is made of plastic and has a elasticity, and the frame is made of metal. The conventional backlight module is provided with a clamping member in the frame by the hook of the plastic frame, so that the plastic frame and the frame of the backlight module can achieve the fixing effect. However, since the plastic frame of the backlight module is made of a plastic material and has a thin structure, the hook is not properly engaged with the clamping member due to improper application, and the plastic frame is deformed inwardly. In this way, the plastic frame deformed inwardly arches may cause assembly difficulties and cause the panel to be fragmented, and it is also easy to cause the size of the backlight module to fail to meet the specifications.

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

The invention provides a backlight module, which comprises 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 side wall is substantially perpendicular to the edge of the bottom surface. The side wall is provided with a plurality of inner recesses, each inner recess corresponding to a notch. Each stop is substantially perpendicular to the bottom surface and corresponds to a gap. The edge of the plastic frame is provided with a plurality of engaging portions and a plurality of grooves, each groove is corresponding to an inner concave portion, and each engaging portion is corresponding to a stopper, and each engaging portion is adapted to be suitable for each of the engaging portions. A corresponding one of the block and the inner recess is disposed such that the block abuts the engaging portion.

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

In an embodiment of the 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 an embodiment of the invention, a flat panel display includes a display panel and a backlight module. The backlight module comprises 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 side wall is substantially perpendicular to the edge of the bottom surface. The side wall is provided with a plurality of inner recesses, each inner recess corresponding to a notch. Each stop is substantially perpendicular to the bottom surface and corresponds to a gap. The edge of the plastic frame is provided with a plurality of engaging portions and a plurality of grooves, each groove is corresponding to an inner concave portion, and each engaging portion is corresponding to a stopper, and each engaging portion is adapted to be suitable for each of the engaging portions. A corresponding one of the block and the inner recess is disposed such that the block abuts the engaging portion.

In order to make the above-mentioned contents of the present invention more comprehensible, the preferred embodiments are described below, and the detailed description is as follows:

The following description of the various embodiments is provided to illustrate the specific embodiments of the invention. Directional terms as used in the present invention, such as "upper", "lower", "previous", "rear", "left", "right", "top", "bottom", "horizontal", "vertical", etc. , just refer to the direction of the additional schema. Therefore, the directional terminology used is for the purpose of illustration and understanding of the invention.

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

Referring to Figure 1, there is shown an exploded view of a flat panel display 50 in accordance with one embodiment of the present invention. The flat panel display 50 may include a display panel 101, a bezel 102, a frame 104, a reflector 106, a light guide 108, an optical film set 110, and a light source (such as a cold cathode ray tube) 112. The optical film set 110 is disposed on the light guide plate 108. The optical film set 110 may include a diffusion film, a cymbal sheet, a brightness enhancement sheet, a composite optical film or a combination thereof. The optical film group 110 functions to correct the light emitted by the light source 112. Direction, spread angle and increase brightness. One side of the light source 112 may be coated with a reflector 114, which mainly increases the utilization of light. The light generated by the light source 112 passes through the components such as the reflector 106, the light guide plate 108, and the optical film group 110 to penetrate the display panel 101, so that the pixels on the display panel 101 generate different gray scales to generate images. It should be noted that the present invention is not limited thereto, and may be adjusted according to actual needs, for example, the light guide plate is omitted and applied 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 partial enlarged view of FIG. The frame 104 can be a metal sheet metal member such as iron, aluminum, steel or other suitable metal material or alloy. The frame 104 can be substantially rectangular, and the side wall 1046 around the bottom surface 1042 is substantially perpendicular to the edge of the bottom surface 1042 to form a receiving area 1047 (shown in FIG. 6). The receiving area 1047 can be placed with a reflector and Light guide plate and other components. 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 side walls 1046, that is, the notches 1044 span the bottom surface 1042 and the side walls 1046. The side wall 1046 is provided with a plurality of inner recesses 1048. Each of the inner recesses 1048 corresponds to a notch 1044. It should be noted that the inner recess 1048 is recessed from the original position of the side wall 1046 to the receiving area 1047. In addition, the frame 104 is also provided with a plurality of stops 1045, each of the stops 1045 being substantially perpendicular to the bottom surface 1042 and disposed at a location 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 more deformable than the short side, the plurality of notches 1044 can be disposed on at least one long side of the frame 104 for providing the engaging structure. In particular, when the side of the long side is thin, the frame 102 can be firmly coupled to the frame 104. However, the invention is not limited thereto, and a notch 1044 may be provided on the short side as needed.

Please refer to FIG. 4 and FIG. 5 . FIG. 4 is a partial enlarged view of the frame 104 and the plastic frame 102 before the uncombination, and FIG. The plastic frame 102 is a central hollowed-out rectangular structure, the edge of which is provided with a plurality of engaging portions 1022 and a plurality of grooves 1024, each groove 1024 corresponding to an inner recess 1048 on the side wall 1046 of the frame 104, each The engaging portion 1022 corresponds to one of the stops 1045 of the frame 104. The inner recess 1048 can 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, a gap d between the inner recess 1048 and the stopper 1045 (such as Figure 9 shows).

Please refer to FIG. 6 to FIG. 9 . FIG. 6 is a partial enlarged view of the frame 104 and the plastic frame 102 after the combination, and FIG. 7 is a partial enlarged view in the direction of the arrow E. FIG. 8 is a sixth view. A partial enlarged view of the arrow F direction, and Fig. 9 is a sectional view taken along line 6-6' of the sixth figure. When the flat-panel display 50 of the present invention is assembled, the engaging portion 1022 of the plastic frame 102 is pressed in corresponding to the notch 1044 of the frame 104, so that the engaging portion 1022 is inserted into the gap between the inner recess 1048 and the stopper 1045, that is, Each of the engaging portions 1022 is adapted to pass between a corresponding one of the stops 1045 and one of the inner recesses 1048 such that the blocking block 1045 abuts the engaging portion 1022. At this time, as shown in FIG. 7, each of the recesses 1048 includes a guiding structure 1049 adapted to guide each of the recesses 1048 to a recess 1024. A guiding structure 1049 can be two beveled edges that connect the side wall 1046 to the inner recess 1048. In addition, the side of the concave portion 1048 facing the groove 1024 may be a plane or a slope, which may be adjusted according to actual needs. The upwardly protruding stop 1045 of the frame 104 can just resist the plastic frame 102, so that the plastic frame 102 is not easily detached from the frame 104, thereby improving the problem that the plastic frame 11 is deformed inwardly. In addition, the side wall 1046 of the frame 104 is wrapped around the periphery of the plastic frame 102, so that the plastic frame 102 can be protected from being deformed by external force.

Please refer to FIG. 1 and FIG. 10 . FIG. 10 is a cross-sectional view of the flat panel display after assembling the components such as the reflector 106 , the light guide plate 108 , and the optical film set 110 by combining the frame 104 and the plastic frame 102 . When the frame 104 is combined with the bezel 102, the light source 112 can be placed into one of the side edges of the frame 104, covered with the reflector 114, and the reflector 114 can be fixed to the side edge of the frame 104. Then, the light guide plate 108 is placed in the accommodating area 1047 of the frame 104, and the light guide plate 108 is embedded in the opening of the reflector 114 to be mounted and positioned. Then, the optical film set 110 is sequentially placed on the light guide plate 108. Above. Finally, the display panel 101 is placed above the optical film set 110, and the display panel 101 is assisted by the plastic frame 102 to complete the assembly of the flat display 50. The above assembly manner is only an example, but the present invention is not limited thereto, and may 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 be fitted into the notch 1044 of the frame 104, and the concave portion 1048 of the frame 104 is guided to the groove 1024 of the plastic frame 102. The upwardly protruding block 1045 of the frame 104 can just resist the plastic frame 102 to form a blockage, so that the frame 102 is not easily tripped and deformed when being pressed, and of course, the light source 112 is not crushed. situation. In addition, the plastic frame 102 also blocks the notch 1044 of the frame 104, so that the leakage of the light source 112 from the notch 1044 can be effectively prevented, thereby improving the light-emitting efficiency of the backlight module. In summary, the retaining block 1045 is provided on the frame 104 to fix the plastic frame 102, so as to avoid the difficulty of assembling the thin plastic frame 102 due to the inability to be effectively fixed, and the size of the backlight module and the backlight module are easy to be easily assembled. Causes problems such as non-compliance with specifications.

While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the invention may be variously modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

50. . . Flat panel display

100. . . Backlight module

101. . . Display panel

102. . . Plastic frame

104. . . frame

106. . . Reflective plate

108. . . Light guide

110. . . Optical film set

112. . . light source

114. . . reflector

1022. . . Clamping department

1024. . . Groove

1042. . . Bottom

1044. . . gap

1045. . . Stoppers

1046. . . Side wall

1047. . . Included area

1048. . . Inner recess

1049. . . Boot structure

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

Figure 2 is a block diagram of the frame of Figure 1.

Fig. 3 is a partial enlarged view of Fig. 2.

Figure 4 shows the frame and frame before uncombination.

Fig. 5 is a partial enlarged view of Fig. 4.

Figure 6 shows the combined frame and frame.

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

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

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

Figure 10 is a cross-sectional view of the reflector, the light guide plate and the optical film assembly after the frame is combined with the plastic frame.

102‧‧‧ plastic frame

104‧‧‧Frame

1022‧‧‧Care Department

1024‧‧‧ groove

1042‧‧‧ bottom

1044‧‧‧ gap

1045‧‧ ‧block

1046‧‧‧ side wall

1048‧‧‧ Inside recess

Claims (8)

A backlight module includes: a frame, comprising: a bottom surface, the edge of the bottom surface is provided with a plurality of notches; a side wall, the side wall is substantially perpendicular to an edge of the bottom surface, and the notches extend from the bottom surface to the side wall The side wall is provided with a plurality of concave portions, each of the concave portions corresponding to a notch; and a plurality of blocking blocks, each of the blocking blocks is substantially perpendicular to the bottom surface and corresponding to a notch; and a plastic frame, the plastic frame The edge is provided with a plurality of engaging portions and a plurality of grooves, each groove is corresponding to an inner concave portion, and each engaging portion corresponds to one stopper, and each engaging portion is adapted to pass through one of the corresponding portions Between the stopper and an inner recess, the stopper abuts the engaging portion, wherein a distance from a periphery of the sidewall to the inner recess is smaller than a periphery of the sidewall to the stopper on a projection plane parallel to the bottom surface The distance is such that a gap is left between the inner recess and the stopper to fit the engaging portion. The backlight module of claim 1, wherein a distance from a periphery of the sidewall to an inner recess is smaller than a distance from a periphery of the sidewall to the corresponding stopper on a projection plane parallel to the bottom surface. The backlight module of claim 1, wherein the inner recesses each comprise a guiding structure adapted to guide each inner recess to a recess. The backlight module of claim 1, wherein the frame comprises at least one long side and at least one short side, and the notches are disposed on the long side. A flat panel display comprising: a display panel for displaying an image; a backlight module comprising: a frame comprising: a bottom surface, the bottom surface of which is provided with a plurality of notches; and a side wall, the side wall is substantially vertical Located at an edge of the bottom surface, the notches extend from the bottom surface to the side wall, the side wall is provided with a plurality of inner recesses, each inner recess corresponding to a notch; and a plurality of stops, each of the blocks being substantially perpendicular to the a bottom surface corresponding to a notch; and a plastic frame for supporting the display panel, the edge of the plastic frame is provided with a plurality of engaging portions and a plurality of grooves, each groove corresponding to an inner concave portion, each One of the engaging portions corresponds to a stop, each engaging portion is adapted to pass between a corresponding one of the retaining blocks and an inner recessed portion, such that the blocking member abuts the engaging portion, wherein the engaging portion is parallel to the bottom surface In the projection plane, the distance from the periphery of the sidewall to the recess is smaller than the distance from the periphery of the sidewall to the stopper, so that a gap is left between the recess and the stopper to fit the engaging portion. The flat panel display of claim 5, wherein a distance from a periphery of the sidewall to an inner recess is smaller than a distance from a periphery of the sidewall to a corresponding one of the projections on the projection plane parallel to the bottom surface. The flat panel display of claim 5, wherein the inner recesses each comprise a guiding structure adapted to guide each inner recess to a recess. The flat panel display of claim 5, wherein the frame comprises at least one long side and at least one short side, and the notches are disposed on the long side.