TW201702708A - Backlight module - Google Patents

Abstract

A backlight module includes a backlight assembly, a back plate, several frame strips, and a combining element. The back plate has several side plates connecting each other around the backlight assembly, in which a top portion of the each side plate has several grooves. The frame strips are respectively disposed on the top portions of the side plates. A bottom surface of the each frame strip has several engaged elements in which the engaged elements respond to the grooves and the engaged elements of the each frame strip are respectively disposed in the grooves of the one side plate such that the engaged elements slip into side walls of the grooves as resulting in the engaged elements being engaged with the side walls of grooves, and thus the frame strips are engaged with the side plates in sequence. In addition the frame strips are engaged with each other to form a gap. The combining element is engaged with the two frame strips adjacent to the gap such that the combining element and the frame strips are completely covered with the top portions of the side plates.

Description

Backlight module

The present invention relates to a backlight module, and more particularly to a backlight module having a spliced frame.

With the development of the electronics industry, flat panel displays have gradually replaced cathode ray tube displays and become the current mainstream. In the flat panel display, the technology of liquid crystal display (LCD) is more sophisticated and popular. However, since the liquid crystal display panel of the liquid crystal display itself cannot emit light, a backlight module is disposed under the liquid crystal display panel to provide a light source, thereby achieving the function of display.

At present, in the backlight module, the plastic frame is mostly combined with the side hook or the card slot on the side of the back plate. In detail, a plurality of grooves are arranged on the side of the plastic frame, and a plurality of sides of the back plate are correspondingly arranged. The hook is combined and fixed by the groove of the side of the plastic frame being engaged with the hook of the side of the backboard.

However, the groove on the side of the frame and the hook on the side of the back plate may be misaligned during processing. When the groove has a size deviation from the hook, the groove and the hook may not be combined or The combination is too loose and affects the yield of the product.

In addition, the combined plastic frame and the back plate are difficult to disassemble, and the plastic frame and the back plate are easily rubbed by each other when assembling or disassembling, thereby generating frame scraping. However, the presence of the frame scraping may affect the backlight module. The quality of light.

The "Prior Art" section is only intended to aid in understanding the present invention, and thus the disclosure of the prior art paragraphs may contain some conventional techniques that are not known to those of ordinary skill in the art. The matters disclosed in the "Prior Art" section, which do not represent the subject matter or the problems to be solved by one or more embodiments of the present invention, are known or recognized by those of ordinary skill in the art prior to the present application.

One of the objects of the present invention is to provide a backlight module for improving the problems caused by the prior art.

Other objects and advantages of the present invention will become apparent from the technical features disclosed herein.

In order to achieve one or a part or all of the above or other purposes, the present invention provides a backlight module comprising: a backlight assembly, a back panel, a plurality of frame strips, and an assembly. The backboard has a plurality of side walls, the side walls are connected to each other and combined around the backlight, wherein each side wall has a plurality of slots at the top. A plurality of frame strips are respectively disposed on the top of the side wall. The bottom surface of each frame strip has a plurality of engaging members, and the engaging members of each of the frame strips are respectively opposite to the corresponding side wall slots, wherein the engaging members of each of the frame strips are respectively inserted into the slots of the corresponding side walls In the body, and the frame strip slides relative to the side wall, and each of the engaging members of the driving frame strip is engaged with one of the side walls of the corresponding slot body of the side wall, so that the frame strips are sequentially combined on the side wall, and the frame is The strips are simultaneously combined with each other to form a gap. The assembly is combined with a two-frame strip adjacent the gap to cover the top of the side wall together with the frame strip.

In an embodiment of the invention, the frame strip includes a first frame strip and a plurality of second frame strips, and the first frame strip is combined with the corresponding side wall and the first frame strip is combined with the first frame strip. After that, the other second frames are sequentially in each other The combination is such that one of the first frame strip and the second frame strip forms a gap.

In an embodiment of the invention, the first frame strip has opposite first end portions, each second frame strip has opposite second end portions and third end portions, and the assembly has opposite two combinations. The second end portion is configured to combine the corresponding first end portion or the corresponding third end portion, and the two combined end portions are respectively used to combine the corresponding third end portion and the corresponding first end portion.

In an embodiment of the invention, each of the first end portions and each of the third end portions is a notch, and each of the second end portions and each of the combined end portions is a convex end.

In an embodiment of the invention, each of the frame strips slides relative to the side wall along a longitudinal direction of a top portion of the parallel corresponding side wall.

In an embodiment of the invention, after one of the frame strips is combined with the corresponding side wall, the other frame strips are sequentially slid toward the adjacent frame strips that have been combined with the corresponding side walls.

In an embodiment of the invention, the groove bodies of each of the side walls are arranged at intervals along the longitudinal direction of the top of the parallel side walls.

In an embodiment of the invention, each of the engaging members is L-shaped.

In an embodiment of the present invention, each of the engaging members forms an engaging groove with a bottom surface of the corresponding frame strip, and is used for one of the corresponding slots when each of the frame strips is combined with the corresponding side wall. The side wall slides in.

In an embodiment of the invention, when the engaging member of each of the frame strips engages with the corresponding side wall groove, a side wall of each of the engaging grooves of the frame strip contacts the side wall of the corresponding groove body.

In an embodiment of the invention, the top of each of the side walls extends away from the combination of the backlights to form an extension piece, and each of the extension pieces is provided with a groove body.

In an embodiment of the invention, when the engaging member of each frame strip is engaged with the corresponding side wall slot body, the lower end portion of the engaging member is located below the bottom surface of the corresponding extending piece, and the bottom surface of the frame strip is located Above the top surface of the extension piece.

In the backlight module of the embodiment of the invention, the frame strips are easy to assemble and disassemble, and the problem of poor combination is not caused. In addition, the frame strip is directly disposed on the top of the backboard, so that the thickness of the side wall of the frame strip can be reduced, so that less processing material is required than the conventional frame body, and the processing cost is also low. In addition, the groove of the back plate is disposed at the top to avoid the problem of light leakage on the side of the back plate. At the same time, since the frame strip is directly disposed on the top of the backboard, the circuit disposed in the backboard can be avoided when combined with the backplane, thereby avoiding damage to the internal circuit during assembly and affecting the yield of the product.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

100‧‧‧Backlight module

110‧‧‧Backlight combination

112‧‧‧reflector

114‧‧‧Light source

116‧‧‧Diffuser

118‧‧‧Optical diaphragm

120‧‧‧back board

120a‧‧‧ openings

122‧‧‧floor

124‧‧‧ Side wall

124a‧‧‧ top

124b‧‧‧ top surface

125‧‧‧Longside

126‧‧‧

126a‧‧‧ Sidewall

128‧‧‧Extension

128a‧‧‧ bottom

128b‧‧‧ top surface

128c‧‧‧Bump

130‧‧‧Box

130a‧‧‧ first box

130b‧‧‧Second box

131a‧‧‧First end

131b‧‧‧second end

131c‧‧‧ third end

132‧‧‧ bottom

134‧‧‧Clamps

136‧‧‧ snap groove

136a‧‧‧ side wall

140‧‧‧assemblies

142‧‧‧ Combination end

150‧‧‧ gap

FIG. 1 is a perspective view of a backlight module according to an embodiment of the invention.

2A is a partial cross-sectional view showing the backlight module of FIG. 1.

2B is a partial cross-sectional view showing a backlight module in accordance with another embodiment of the present invention.

2C is a partial cross-sectional view showing a backlight module in accordance with still another embodiment of the present invention.

FIG. 3 is an exploded perspective view of the backlight module according to FIG. 1.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only directions referring to the additional drawings. Therefore, the directional terminology used is for the purpose of illustration and not limitation.

Please refer to FIG. 1 , which is a perspective view of a backlight module according to an embodiment of the invention. As shown in FIG. 1 , the backlight module 100 of the present embodiment includes a backlight assembly 110 , a back panel 120 , a plurality of frame strips 130 , and an assembly 140 .

2A is a schematic cross-sectional view of the backlight module according to FIG. 1 , and FIG. 3 is an exploded perspective view of the backlight module according to FIG. 1 . As shown in FIG. 1 , FIG. 2A and FIG. 3 , in the embodiment, the back plate 120 has a bottom plate 122 and a plurality of side walls 124 , and the side walls 124 are connected to each other and surround the backlight assembly 110 . The side walls 124 are connected to the bottom plate 122 and are connected to each other to form an accommodating space having an opening 120a. The backlight assembly 110 is disposed in the accommodating space formed by the side wall 124 and the bottom plate 122, and the bottom plate 122 carries the backlight assembly 110. The top portion 124a of each of the side walls 124 has a plurality of slots 126. The slots 126 are spaced apart along the long side 125 of the top portion 124a of the parallel spacers 124, but are not limited thereto. In this embodiment, the material of the back plate 120 may be metal, but not limited thereto.

In this embodiment, the top portion 124a of each side wall 124 can extend away from the backlight assembly 110 to form an extending piece 128 of a parallel bottom plate 122, that is, the top portion 124a of each side wall 124 extends outwardly to form Extend the sheet 128. Since the trough body 126 is disposed on the top portion 124a of the side wall 124, the trough body 126 can be disposed on the extending piece 128 of each side wall 124. In addition, since the trough body 126 of the back plate 120 is disposed on the top portion 124a of the side wall 124, The system design avoids the problem of light leakage on the side of the back plate 120.

On the other hand, the backlight assembly 110 of the present embodiment may include a reflective plate 112, a plurality of light sources 114, a diffusion sheet 116, and an optical film 118. The reflective plate 112 is disposed on the bottom plate 122 of the back plate 120, and the reflective plate 112 is reflective. Light from source 114. In some embodiments, a plurality of light sources 114 may be disposed on the reflective plate 112. The light exiting surface of each of the light sources 114 may surround the formed opening 120a toward the side wall 124 of the backing plate 120 such that light emitted by the light source 114 may be emitted from the opening 120a. . In addition, the diffusion sheet 116 and the optical film 118 are disposed on the top portion 124a of the sidewall 124 of the back panel 120 and completely cover the opening 120a, so that the light emitted by the light source 114 can be emitted from the opening 120a and then passed through the diffusion sheet 116 and the optical film. The action of the sheet 118 produces a better optical effect of the light. In addition, the optical film 118 can be, for example, a brightness enhancement film (BEF), a diffusion sheet, or the like, and the number can be one or more. FIG. 2A only shows one piece of the optical film 118 as an illustration.

In this embodiment, the light source 114 may be a plurality of strips or matrix arrays of Light Emitting Diodes (LEDs) or Cold Cathode Fluorescent Lamps (CCFLs), but not Limited. It should be understood that the present embodiments are merely illustrative and are not intended to limit the implementation of the invention. In other embodiments, the backlight assembly may further include a light guide plate (not shown), and the light source may also be a laterally emitting light emitting diode. The light source is disposed on one side of the light guide plate, and the light source laterally emitted by the light source may be The opening of the light guide plate is emitted from the opening 120a formed by the side wall 124, but is not limited thereto.

Referring again to FIG. 3, a plurality of frame strips 130 are respectively disposed on the top surface 124b of the top portion 124a of the side wall 124. The bottom surface 132 of each frame strip 130 has a plurality of engaging members 134, and the engaging members 134 of each of the frame strips 130 are respectively opposed to the corresponding grooves 126 of the side walls 124. Referring to FIG. 2A at the same time, each frame 130 The engaging members 134 can be respectively inserted into the slots 126 of the corresponding side walls 124, and the frame strips 130 can slide relative to the side walls 124, and each engaging member 134 of the driving frame strips 130 can be engaged with the side walls 124. One of the side walls 126a of the corresponding slot 126 is such that the frame strips 130 are sequentially combined on the side wall 124. In detail, each of the engaging members 134 has a main body portion 134a and a bent portion 134b which are connected to each other, wherein the bottom surface 132 of the vertically corresponding frame strip 130 of the main body portion 134a extends downward, and the bent portion 134b is bently connected to the main body The main portion 134a and the bent portion 134b of the portion 134a can form an engagement groove 136 with the bottom surface 132 of the corresponding frame strip 130. Therefore, when each of the frame strips 130 slides in one direction to combine the corresponding side walls 124, the engaging members 134 slide in the same direction in the corresponding slots 126 such that one of the side walls 126a of the corresponding slot 126 can be oppositely Slide into the engagement groove 136 formed by the engaging member 134. Further, when the engaging member 134 of each of the frame strips 130 is engaged with the corresponding groove 126 of the side wall 124, the side wall 136a of each of the engaging grooves 136 of the frame strip 130 can contact the corresponding groove 126. Side wall 126a, but not limited thereto.

In the present embodiment, the groove 126 is, for example, a through hole penetrating through the top portion 124a of the side wall 124, but is not limited thereto. When the engaging member 134 of each of the frame strips 130 is engaged with the corresponding groove 126 of the side wall 124, the lower end portion of each of the engaging members 134 (that is, the aforementioned bent portion 134b) is located at the corresponding extending piece 128. Below the bottom surface 128a, the bottom surface 132 of the frame strip 130 is above the top surface 128b of the extension piece 128. The diffusion sheet 116 and the optical film 118 are limited to the space between the frame strip 130 and the extension piece 128. In other embodiments, referring to FIG. 2B, the top surface 128b of the extending piece 128 further has a stud 128c for further fixing the diffusion sheet 116 and the optical film 118. The bottom surface 132 of the frame strip 130 abuts the stud. 128c. In other embodiments, referring to FIG. 2C, the sidewall spacers 124 form a bent structure for carrying and fixing the diffusion sheet 116 and the optical film sheet 118. Therefore, the bottom surface 132 of the frame strip 130 abuts the top surface 128b of the extension piece 128.

In this embodiment, each of the engaging members 134 is L-shaped, that is, each of the engaging members 134 has an L-shaped cross section, but is not limited thereto.

In detail, each of the frame strips 130 of the present embodiment can slide relative to the side wall 124 along the direction of the long side 125 of the top portion 124a of the corresponding corresponding side wall 124, so that the engaging member 134 of the frame strip 130 can be combined with the side wall The troughs 126 of 124 are combined and fixed, and the frame strips 130 are combined on the side wall 124. After one of the frame strips 130 is combined with the corresponding side wall 124, the other frame strips 130 are sequentially slid toward the adjacent frame strips 130 that have been combined with the corresponding side walls 124. Meanwhile, after the frame bars 130 are sequentially combined with each other, the frame bars 130 combined with each other form a notch 150. Both ends of the assembly 140 may be combined at the ends of the two frame strips 130 adjacent the notches 150. The assembly 140 is, for example, assembled from the top to the bottom of the notch 150 and is, for example, combined in the notch 150 in the direction of the long side 125 of the vertical top portion 124a. Therefore, after all the frame strips 130 are combined with each other and the assembly 140 is combined with the two-frame strip 130 adjacent to the notch 150, the assembly 140 and the frame strip 130 collectively completely cover the top surface 124b of the top portion 124a of the side wall 124 (or extend) The top surface 128b of the sheet 128). In this embodiment, the material of the frame strip 130 and the assembly member 140 may be plastic, such as polycarbonate (PC), but not limited thereto.

When the assembled frame 130 and the assembly 140 are to be disassembled, the assembly 140 is removed from the top 124a of the side wall 124 (or the top surface 128b of the extension 128) from bottom to top, and then the frame 130 is removed. Sliding in the opposite direction of the assembly direction, the engaging groove 136 of the engaging member 134 of the frame 130 is away from the side wall 126a of the groove 126, and the frame strip 130 can be taken out, and then the other frame strips 130 are sequentially taken out. Therefore, the frame strips 130 are easy to assemble and disassemble from each other, and do not cause a problem of poor combination.

In addition, through the aforementioned design, the frame 130 is directly set. The top portion 124a (or the extension piece 128) of the side wall 124 of the backing plate 120 is disposed such that the thickness of the side wall of the frame strip 130 can be reduced, so that less material is required than the conventional frame body, and the processing cost is also Lower. At the same time, since the frame strip 130 is directly disposed on the top portion 124a (or the extension piece 128) of the side wall 124 of the back plate 120, the circuit disposed in the back plate 120 can be avoided when combined with the back plate 120, thereby avoiding damage to the internal circuit during assembly. And affect the yield of the product.

In addition, referring to FIG. 1 and FIG. 3 again, the frame strip 130 may include a first frame strip 130a and a plurality of second frame strips 130b (FIG. 1 and FIG. 3 are illustrated as three second frame strips 130b). After the first frame strip 130a combines the corresponding side wall 124 and one of the second frame strips 130b combines the first frame strip 130a and is combined with the side wall 124, the other second frame strips 130b are sequentially combined with each other, so that One of the frame strip 130a and the second frame strip 130b forms a notch 150. The first frame strip 130a has opposite first end portions 131a, each second frame strip 130b has opposite second end portions 131b and third end portions 131c, and the assembly member 140 has opposite two combined end portions 142, each A second end portion 131b may be combined with a corresponding first end portion 131a or a corresponding third end portion 131c, and the two combined end portions 142 may respectively combine the corresponding third end portion 131c and the corresponding first end portion 131a.

For example, each of the first end portions 131a and each of the third end portions 131c is a notch, and each of the second end portions 131b and each of the combined end portions 142 is a convex end, but is not limited thereto. In other embodiments, the configuration of the first end portion 131a and the third end portion 131c may be a configuration combined with the second end portion 131b and the combined end portion 142.

In summary, embodiments of the present invention can achieve at least one of the following advantages or benefits. In the backlight module of the embodiment of the invention, the frame strips are easy to assemble and disassemble, and the problem of poor combination is not caused. In addition, the frame strip is directly disposed on the top of the backboard, so that the thickness of the side wall of the frame strip can be reduced, so The required materials are less than the conventional frame, and the processing cost is also low. In addition, the groove of the back plate is disposed at the top to avoid the problem of light leakage on the side of the back plate. At the same time, since the frame strip is directly disposed on the top of the backboard, the circuit disposed in the backboard can be avoided when combined with the backplane, thereby avoiding damage to the internal circuit during assembly and affecting the yield of the product.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention. In addition, the terms "first", "second" and the like mentioned in the specification or the scope of the claims are only used to name the elements or distinguish different embodiments or ranges, and are not intended to limit the number of elements. Upper or lower limit.

100‧‧‧Backlight module

110‧‧‧Backlight combination

120‧‧‧back board

122‧‧‧floor

124‧‧‧ Side wall

128‧‧‧Extension

130‧‧‧Box

130a‧‧‧ first box

130b‧‧‧Second box

140‧‧‧assemblies

150‧‧‧ gap

Claims (12)

A backlight module includes: a backlight assembly; a back panel having a plurality of side walls connected to each other and surrounding the backlight assembly, wherein a top portion of each of the side walls has a plurality of slots; The frame strips are respectively disposed on the tops of the side walls, and a bottom surface of each of the frame strips has a plurality of engaging members, and the engaging members of each of the frame strips are respectively opposite to the corresponding side walls The plurality of the engaging members of the frame strip are respectively inserted into the corresponding slots of the side wall, and the frame strip slides relative to the side wall to drive each of the frame strips One of the engaging members is engaged with one of the side walls of the corresponding side wall of the side wall, so that the frame strips are sequentially combined on the side walls, and the frame strips are simultaneously combined with each other. Forming a notch; and an assembly, the two frame strips adjacent to the notch, for covering the tops of the side walls together with the frame strips. The backlight module of claim 1, wherein the frame strip comprises a first frame strip and a plurality of second frame strips, wherein the first frame strip corresponds to the side wall and the second frame After one of the frame strips is combined with the first frame strip, the other second frame strips are sequentially combined with each other such that the first frame strip and one of the second frame strips form the gap. The backlight module of claim 2, wherein the first frame strip has opposite first ends, each of the second frame strips having a second end and a third end The assembly has opposite two combined ends, each of the second ends for combining the corresponding first end or the corresponding third end, the two combined ends respectively for combining the corresponding Third end Corresponding to the first end. The backlight module of claim 3, wherein each of the first end portions and each of the third end portions are notches, and each of the second end portions and each of the combined end portions is convex end. The backlight module of claim 1, wherein each of the frame strips slides relative to the side wall along a longitudinal direction of the top portion of the side wall parallel to the corresponding side wall. The backlight module of claim 5, wherein after the one of the frame strips is combined with the corresponding side wall, the other of the frame strips are sequentially oriented to be combined with the corresponding side wall. The adjacent frame strip slides. The backlight module of claim 1, wherein the slots of each of the side walls are spaced apart along a longitudinal direction of the top of the side wall. The backlight module of claim 1, wherein each of the engaging members is L-shaped. The backlight module of claim 1, wherein each of the engaging members forms an engaging groove with the bottom surface of the corresponding frame strip for combining the corresponding side wall of each of the frame strips. When one of the side walls of the corresponding slot body slides in. The backlight module of claim 9, wherein each When the engaging members of the frame strip are engaged with the corresponding slots of the side wall, a side wall of each of the engaging slots of the frame strip contacts the corresponding side wall of the slot body. The backlight module of claim 1, wherein the top of each of the side walls extends away from the backlight combination to form an extension piece, and each of the extension pieces is provided with the groove body. The backlight module of claim 11, wherein when the engaging members of each of the frame strips are engaged with the corresponding slots of the side wall, the lower end of each of the engaging members The portion is located below a bottom surface of the corresponding extension piece, and the bottom surface of the frame strip is located above a top surface of the extension piece.