CN102003653A

CN102003653A - Backlight module

Info

Publication number: CN102003653A
Application number: CN2009101716094A
Authority: CN
Inventors: 叶彦伯; 徐正彬; 张豫修
Original assignee: AU Optronics Corp
Current assignee: AU Optronics Corp
Priority date: 2009-08-28
Filing date: 2009-08-28
Publication date: 2011-04-06

Abstract

The invention discloses a backlight module, comprising an optical film, a frame and a light source. The optical film includes a first top surface and a first bottom surface opposite to each other, a side face connecting the first top surface with the first bottom surface, and a lug, wherein the lug is arranged on the side face and includes a positioning hole. The frame comprises a base, a sidewall and a positioning structure. The sidewall is connected to the base and supports the optical film, a second top surface of the sidewall comes into contact with the first bottom surface. A positioning structure formed at the outer side of the sidewall comprises a first snap, a first base, a second base and a second snap. The second snap is suspended on the second bottom surface of the second base and positioned above the first base, the second snap passes through the positioning hole, the second snap and the first snap are suitable for butting against two opposite parts of an inner edge of the positioning hole. The movement of the optical film is limited by the first snap and the second snap as well as by the second top surface and the second bottom surface. The light source is arranged between the base and the optical film. The positioning structure of the backlight module plays the role of positioning the optical film.

Description

Module backlight

Technical field

The present invention relates to a kind of module backlight, relate in particular to a kind of module backlight with blooming piece location structure.

Background technology

Figure 1 shows that a kind of vertical view of existing module backlight.See also Fig. 1, existing module 100 backlight comprises blooming piece 11, framework 12, light source 13, LGP 14 and a plurality of adhesive tape 15.

Two relative sides of blooming piece 11 dispose a lug 111 respectively, offer locating hole 112 on each lug 111.

Framework 12 comprises base (figure does not show) and is connected to the sidewall 122 of base.Base is suitable for carrying LGP 14, and sidewall 122 is suitable for bearing optical diaphragm 11.Also be provided with a plurality of positioning convex 123 on the sidewall 122, the shape of each positioning convex 123 and size are corresponding with one of these locating holes 112, and each positioning convex 123 is arranged in corresponding locating hole 112.

Light source 13 is disposed between base and the blooming piece 11.Light source 13 comprises a plurality of light emitting diodes 131 and circuit board 132, and these light emitting diodes 131 are electrically connected to circuit board 132.

LGP 14 is disposed between base and the blooming piece 11, and LGP 14 has light incident sides 141, and light source 13 is suitable for to light incident sides 141 emission light.

These adhesive tapes 15 stick in these lugs 111 of blooming piece 11 top of sidewall 122 respectively.

In module 100 backlight, each positioning convex 123 matches with restriction blooming piece 11 moving in X-axis and Y direction with corresponding locating hole 112.These adhesive tapes 15 are attached at blooming piece 11 on the sidewall 122, with restriction blooming piece 11 moving in Z axle (figure does not show that the Z axle is perpendicular to X-axis and Y-axis) direction.So, just, can realize location to blooming piece 11.

Yet blooming piece 11 is to be fixed on the top of sidewall 122 by pasting of these adhesive tapes 15, thereby has increased material cost.In addition, these adhesive tapes 15 occur easily that stickiness reduces or phenomenon such as come off, and cause blooming piece 11 to produce displacement, make the reliability of module 100 backlight reduce.

Summary of the invention

The objective of the invention is to, a kind of module backlight with preferable blooming piece location structure is provided.

The object of the invention to solve the technical problems is to adopt following technical scheme to realize.

A kind of module backlight comprises at least one blooming piece, framework and light source.Blooming piece has first end face respect to one another and first bottom surface, is connected the side and the lug of first end face and first bottom surface, and lug is disposed at the side and has locating hole.Framework comprises base, sidewall and location structure.Sidewall is connected to base and bearing optical diaphragm, and second end face of sidewall contacts first bottom surface.Location structure is formed at the outside of sidewall, and it comprises first trip, first pedestal, second pedestal and second trip.First trip is connected to sidewall, and first trip passes locating hole.First base configuration is in the outside of first trip, and the thickness of first pedestal is along successively decreasing away from the direction of first trip.Second pedestal is connected to sidewall and is positioned at first pedestal top.Second trip is suspended in second bottom surface of second pedestal and is positioned at first pedestal top, and second trip passes locating hole, and second trip and first trip are suitable for supporting relative two parts of an inner edge of locating hole.Moving of blooming piece limited and limited by second end face and second bottom surface by first trip and second trip.Light source is disposed between base and the blooming piece.

In one embodiment of this invention, the material of framework comprises plastic cement.

In one embodiment of this invention, described module backlight more comprises LGP, and LGP is disposed between base and the blooming piece, and LGP has light incident sides, and light source is suitable for to light incident sides emission light.

In one embodiment of this invention, described module backlight more comprises LGP and emission sheet, and LGP is disposed between base and the blooming piece, and LGP has light incident sides, and light source is suitable for to light incident sides emission light.Reflector plate is disposed between base and the LGP.

In one embodiment of this invention, blooming piece is diffusion sheet or prismatic lens.

In one embodiment of this invention, framework has the blocking part, and the blocking part is formed at the outside of sidewall and is suitable for supporting the side of blooming piece.

Be provided with location structure in the above-mentioned module backlight, location structure comprises first trip and second trip, and moving of blooming piece limited and limited by second bottom surface of second end face of sidewall and second pedestal by first trip and second trip.Therefore, compare with known techniques, the material cost of adhesive tape is saved, and the reliability of the module backlight of the embodiment of the invention is improved.

Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, and for above and other objects of the present invention, feature and advantage can be become apparent, below especially exemplified by embodiment, and conjunction with figs., be described in detail as follows.

Description of drawings

Fig. 1 is a kind of schematic top plan view of existing module backlight.

Fig. 2 is the schematic top plan view of the module backlight of one embodiment of the invention.

Fig. 3 is the schematic perspective view of the part of module backlight shown in Figure 2.

Fig. 4 is the three-dimensional generalized section of module backlight shown in Figure 2 part.

Fig. 5 is the schematic diagram in blooming piece when assembling of module backlight shown in Figure 2.

Fig. 6 is the schematic diagram after the blooming piece of module backlight shown in Figure 2 is assembled.

The specific embodiment

Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with drawings and Examples, to its specific embodiment of module backlight, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.

See also Fig. 2 to Fig. 4, the module backlight 200 of present embodiment comprises at least one blooming piece 21 (Fig. 4 schematically illustrates), framework 22, light source 23, LGP 24 and reflector plate 25.

Blooming piece 21 is diffusion sheet or prismatic lens, and it has first end face 211 respect to one another and first bottom surface 212, the two relative side 213 that is connected first end face 211 and first bottom surface 212 and a plurality of lug 214 (Fig. 4 schematically illustrates two).These lugs 214 are disposed at these sides 213 respectively and each lug 214 has locating hole 215.

Framework 22 comprises base 221, sidewall 222 and a plurality of location structure 223.The material of framework 22 comprises plastic cement.Sidewall 222 is suitable for bearing optical diaphragm 21, and sidewall 222 has first bottom surface 212 of second end face, 224, the second end faces, 224 contact optical diaphragms 21.Sidewall 222 is connected to base 221, and forms spatial accommodation 220, and spatial accommodation 220 is suitable for holding light source 23, LGP 24 and reflector plate 25.In the present embodiment, sidewall 22 is a ring bodies, and it is disposed at for example on the base 221 of base plate.

Each location structure 223 is formed at the outside of sidewall 222, and each location structure 223 comprises first trip 225, first pedestal 226, second pedestal 227 and second trip 228.Each first trip 225 is connected to sidewall 222, and passes the locating hole 215 of corresponding lug 214.The top of each first trip 225 comprises an inclined plane 229, and the height on inclined plane 229 is along successively decreasing away from the direction of spatial accommodation 220.The setting on inclined plane 229 is assemblings (seeing aftermentioned for details) of blooming piece 21 for convenience.

Each first pedestal 226 is disposed at the outside of the first corresponding trip 225, and the thickness of each first pedestal 226 successively decreases along the direction (promptly along the direction away from spatial accommodation 220) away from first trip 225.Each second pedestal 227 is connected to sidewall 222 and is positioned at corresponding first pedestal, 226 tops.Be formed with a containing cavity 231 between each second pedestal 227 and corresponding first pedestal 226.

Each second trip 228 is suspended in second bottom surface 230 of the second corresponding pedestal 227 and is positioned at corresponding first pedestal, 226 tops.With regard to each location structure 223, second trip 228 passes relative two parts that corresponding locating hole 215, the second trips 228 and first trip 225 are suitable for supporting an inner edge of locating hole 215.Moving of blooming piece 21 limited with these second trips 228 by these first trips 225 and limited with second bottom surface 230 of these second pedestals 227 by second end face 224 of sidewall 222.In detail, these first trips 225 and these second trips 228 can limit blooming piece 21 the moving of X-axis and Y direction, and second end face 224 can limit blooming piece 21 moving in Z-direction with these second bottom surfaces 230.

Framework 22 also has blocking part 232, and blocking part 232 is formed at the outside of sidewall 222 and is suitable for supporting the side 213 of blooming piece 21.

Light source 23 is disposed between base 221 and the blooming piece 21.Light source 23 comprises a plurality of illuminating parts 231 and circuit board 232, and these illuminating parts 231 are electrically connected to circuit board 232.Circuit board 232 is configurable on sidewall 222.Each illuminating part 231 can be a light emitting diode.LGP 24 is disposed between base 221 and the blooming piece 21, and LGP 24 has light incident sides 241, and light source 23 is suitable for to light incident sides 241 emission light.Reflector plate 25 is disposed between base 221 and the LGP 24.

Please be simultaneously referring to Fig. 2 to Fig. 6, when assembling module 200 backlight, can earlier reflector plate 25 be disposed on the base 221 of framework 22, then LGP 24 be disposed on the reflector plate 25, then light source 23 is assemblied between the light incident sides 241 of the sidewall 222 of framework 22 and LGP 24.Next, make each lug 214 of blooming piece 21 tilt to suitable angle blooming piece 21 bendings, each lug 214 is moved downward along the inclined plane 229 of first trip 225 of correspondence, and enter in the corresponding containing cavity 231.Then, blooming piece 21 is kept flat, make first trip 225 of each detent mechanism 223 penetrate the locating hole 215 of corresponding lug 214, and make first bottom surface 212 of second end face, 224 contact optical diaphragms 21 of sidewall 222 with second trip 228.

In addition, though the module backlight 200 of present embodiment is to be example with side incident type module backlight, in another embodiment, module 200 backlight also can be down straight aphototropism mode set.

The above, only be embodiments of the invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with embodiment, yet be not in order to restriction the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solution of the present invention content, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.

Claims

1. a module backlight is characterized in that, comprising:

At least one blooming piece has one first end face respect to one another is connected this first end face and this first bottom surface with one first bottom surface, a side and a lug, and this lug is disposed at this side and has a locating hole;

One framework comprises:

One base;

One sidewall is connected to this base and carries this blooming piece, and one second end face of this sidewall contacts this first bottom surface; And

One location structure is formed at the outside of this sidewall, comprising:

One first trip is connected to this sidewall, and this first trip passes this locating hole;

One first pedestal is disposed at the outside of this first trip, and the thickness of this first pedestal is along successively decreasing away from the direction of this first trip;

One second pedestal is connected to this sidewall and is positioned at this first pedestal top;

One second trip, be suspended in one second bottom surface of this second pedestal and be positioned at this first pedestal top, this second trip passes this locating hole, this second trip and this first trip are suitable for supporting relative two parts of an inner edge of this locating hole, this blooming piece move by this first trip and this second trip limits and limited by this second end face and this second bottom surface.

One light source is disposed between this base and this blooming piece.

2. module backlight according to claim 1 is characterized in that the material of this framework comprises plastic cement.

3. module backlight according to claim 1 is characterized in that, more comprises a LGP, and this LGP is disposed between this base and this blooming piece, and this LGP has a light incident sides, and this light source is suitable for to this light incident sides emission light.

4. module backlight according to claim 3 is characterized in that, more comprises a reflector plate, and this reflector plate is disposed between this base and this LGP.

5. module backlight according to claim 1 is characterized in that, this blooming piece is diffusion sheet or prismatic lens.

6. module backlight according to claim 1 is characterized in that this framework has a blocking part, and this blocking part is formed at the outside of this sidewall and is suitable for supporting this side of this blooming piece.