CN205281083U - Backlight module group - Google Patents

Abstract

The utility model discloses a backlight module group, it includes light guide plate and lamp strip. The light guide plate has relative play plain noodles with the bottom surface and be connected the income plain noodles between a plain noodles and bottom surface, and one of them has neighbouring protruding structure in location of going into the plain noodles wherein to go out plain noodles and bottom surface. The lamp strip includes base plate and a plurality of light emitting component. The base plate has the location open structure who corresponds the protruding structure in location, and the base plate combines with fixing a position protruding structure through location open structure with the light guide plate each other. A plurality of light emitting component dispose on the base plate, and each light emitting component has towards the luminous side of going into the plain noodles. The utility model provides a backlight module group has the efficiency of the equipment tolerance of reduction lamp strip and light guide plate to can improve light utilization efficiency and area source quality.

Description

Backlight module

Technical field

This utility model relates to a kind of backlight module, and particularly to the backlight module that a kind of lamp bar and light guide plate group each other are joined.

Background technology

Backlight module is one of key part and component of liquid crystal display. Owing to liquid crystal panel itself does not have the ability of luminescence, namely the function of backlight module is in that well-off brightness and the area source being evenly distributed, and makes the normal show image of liquid crystal display energy. Current liquid crystal display is widely used to the electronic product of the tool growing potentials such as monitor, notebook computer, digital camera, mobile phone and flat board, therefore drives the demand Sustainable Growth of backlight module and relevant spare part thereof. Backlight module can divide into down straight aphototropism mode set and side injection type backlight module two kinds according to entering light mode, and wherein side injection type backlight module is because having the advantage of thinner thickness, is suitably applied in the liquid crystal display of slimming.

The lamp bar that the backlight module of known side light-entering type mainly includes light guide plate with to be arranged at light guide plate other. But, because lamp bar and light guide plate are to paste respectively to be fixed on different parts, easily cause having between lamp bar and light guide plate excessive spacing because assembling tolerance, cause the light utilization ratio of backlight module to be deteriorated, or the quality variation of the area source of backlight module offer. As long as additionally, backlight module is subject to bigger vibrations namely easily produces the displacement between lamp bar and light guide plate, and causing the spacing producing dislocation or bigger between lamp bar and light guide plate, cause that the problems referred to above are more serious.

This " background technology " paragraph is used only to help to understand this novel content, and therefore disclosed in " background technology " content is likely to comprise some and does not constitute in art the known technology known to those of ordinary skill. Additionally, content disclosed in " background technology " does not represent this content or this novel one or more embodiments problem to be solved, do not represent before this novel application those of ordinary skill in by art yet and be known or cognitive.

Utility model content

This utility model provides a kind of backlight module, to reduce the assembling tolerance of lamp bar and light guide plate, and then improves light utilization ratio and the area source quality of backlight module.

Other objects and advantages of the present utility model can be further understood from the technical characteristic disclosed by this utility model.

For reaching one of above-mentioned or partly or entirely purpose or other purposes, the backlight module that this utility model one embodiment provides includes light guide plate and lamp bar. Light guide plate has relative exiting surface and bottom surface and the incidence surface being connected between exiting surface and bottom surface, wherein exiting surface and bottom surface one of them there is the positioning convex structure of contiguous incidence surface. Lamp bar includes substrate and multiple light-emitting component. Substrate has the locating aperture structure of corresponding positioning convex structure, and substrate and light guide plate are bonded to each other by locating aperture structure and positioning convex structure. Multiple light-emitting components are configured on substrate, and each light-emitting component has the emission side towards incidence surface.

In an embodiment of the present utility model, above-mentioned light guide plate also has the first relative side and the second side, first side and the second side are connected between incidence surface, bottom surface and exiting surface, positioning convex structure includes projection, and the contour connection of projection is in incidence surface, the first side and the second side. Locating aperture structure includes the opening coordinated with projection.

In an embodiment of the present utility model, above-mentioned positioning convex structure includes at least one projection, and locating aperture structure includes at least one opening of coordinating with at least one projection.

In an embodiment of the present utility model, the emission side contact incidence surface of above-mentioned light-emitting component.

In an embodiment of the present utility model, above-mentioned substrate is flexible PCB.

In an embodiment of the present utility model, above-mentioned backlight module also includes at least one blooming and reflector plate. Blooming is configured at above exiting surface. Reflector plate is configured at subjacent.

In an embodiment of the present utility model, above-mentioned backlight module also includes glue frame and backboard. Glue frame has around multiple sidepieces of light guide plate and extends to the multiple support portions above exiting surface from least part of sidepiece. Backboard has a diapire, is connected to multiple sidewalls of diapire and the roof relative with diapire, diapire carrying light guide plate and glue frame, sidewall is around glue frame, light guide plate and lamp bar, and roof connects one of them sidewall corresponding to light-emitting component, and covering part separates bright finish.

In an embodiment of the present utility model, above-mentioned backlight module also includes glue material, and wherein positioning convex structure is positioned at exiting surface, and glue material gluing is between the roof of backboard, substrate and positioning convex structure.

In an embodiment of the present utility model, above-mentioned backlight module also includes lampshade and backboard. Lampshade cladding lamp bar and part light guide plate, lampshade has the sidewall corresponding to light-emitting component and the diapire and the roof that are connected to sidewall, and wherein diapire extends to below part light guide plate, and roof covering part separates bright finish. Backboard cladding lampshade and light guide plate, and expose the exiting surface of light guide plate.

In an embodiment of the present utility model, above-mentioned backlight module also includes glue material, and wherein positioning convex structure is positioned at exiting surface, and glue material gluing is between the roof of lampshade, substrate and positioning convex structure.

The lamp bar of the backlight module of this utility model embodiment and light guide plate can combine mutually via the locating aperture structure corresponded to each other and positioning convex structure and firmly assembled with one another, the relative position making lamp bar and light guide plate can be fixed really, without producing to assemble dislocation, and without forming wide arc gap between lamp bar and light guide plate, so it is avoided that the light utilization ratio variation of backlight module or the problem of area source quality variation. Therefore, the backlight module of this utility model embodiment can improve light utilization ratio and area source quality.

For above and other purpose of the present utility model, feature and advantage can be become apparent, preferred embodiment cited below particularly, and coordinate accompanying drawing, it is described in detail below.

Accompanying drawing explanation

Fig. 1 is the sectional perspective schematic diagram of a kind of backlight module of this utility model one embodiment.

Fig. 2 is the sectional perspective schematic diagram of a kind of backlight module of another embodiment of this utility model.

Fig. 3 is the sectional perspective schematic diagram of a kind of backlight module of this utility model another embodiment.

Fig. 4 is the cross-sectional schematic of a kind of backlight module of this utility model another embodiment.

Fig. 5 is the cross-sectional schematic of a kind of backlight module of this utility model another embodiment.

Detailed description of the invention

About of the present utility model aforementioned and other technology contents, feature and effect, coordinate with reference in the detailed description of a preferred embodiment of accompanying drawing following, can clearly present. The direction term being previously mentioned in following example, for instance: upper and lower, left and right, front or rear etc., it is only the direction with reference to accompanying drawing. Therefore, the direction term of use is used to illustrate not for limiting this utility model.

Fig. 1 is the sectional perspective schematic diagram of a kind of backlight module illustrating this utility model one embodiment. As it is shown in figure 1, the backlight module 100a of the present embodiment includes light guide plate 110a and lamp bar 120. Light guide plate 110a has positioning convex structure 113, and lamp bar 120 has the locating aperture structure 123 of corresponding positioning convex structure 113. When light guide plate 110a and lamp bar 120 combine, positioning convex structure 113 and locating aperture structure 123 can be corresponding chimeric each other and limit light guide plate 110a and lamp bar 120 displacement each other, increase the soundness after lamp bar 120 combines with light guide plate 110a.

In detail, light guide plate 110a has relative exiting surface 112 and bottom surface 114 and the incidence surface 116 being connected between exiting surface 112 and bottom surface 114. In the present embodiment, the exiting surface 112 of light guide plate 110a has the positioning convex structure 113 of contiguous incidence surface 116, but is not limited to this.

Referring again to Fig. 1, lamp bar 120 includes substrate 122 and multiple light-emitting component 124 (only illustrating in Fig. 1) with a light-emitting component 124. Substrate 122 has a locating aperture structure 123 of corresponding positioning convex structure 113, substrate 122 and light guide plate 110a can via locating aperture structure 123 and positioning convex structure 113 combination with one another. Additionally, substrate 122 can be flexible PCB, but it is not limited to this. For example, substrate 122 is alternatively rigid circuit board.

It addition, multiple light-emitting components 124 are configured on substrate 122, light-emitting component 124 can be light emitting diode (LightEmittingDiode, LED), but being not limited to this, in other embodiments, light-emitting component 124 is alternatively laser diode or other semiconductor light-emitting elements etc. Each light-emitting component 124 has the emission side 124a of the incidence surface 116 towards light guide plate 110a, each light-emitting component 124 can emit beam by self-luminous side 124a, light enters in light guide plate 110a via the incidence surface 116 of light guide plate 110a, and is formed area source by exiting surface 112 outgoing of light guide plate 110a.

In the present embodiment, light guide plate 110a also has the first relative side 118 and the second side 119, and the first side 118 and the second side 119 are connected between incidence surface 116, bottom surface 114 and exiting surface 112. Positioning convex structure 113 is such as a projection, and the contour connection of projection is in incidence surface the 116, first side 118 and the second side 119. It is to say, positioning convex structure 113 is such as protrude from the exiting surface 112 of light guide plate 110a, and extend to the second side 119 from the first side 118, and be connected with incidence surface 116 with a side. Locating aperture structure 123 is such as the opening coordinated with positioning convex structure 113 (projection).

In above-mentioned backlight module 100a, substrate 122 and light guide plate 110a can relative movements between restricting substrate 122 and light guide plate 110a by locating aperture structure 123 and positioning convex structure 113 combination with one another, the emission side 124a making each light-emitting component 124 can stably be in close proximity to the incidence surface 116 of light guide plate 110a, it is to avoid produced bit errors when lamp bar 120 assembles with light guide plate 110a. And, even if backlight module 100a is subject to bigger vibrations, lamp bar 120 and light guide plate 110a are without moving relative to each other. Therefore, the backlight module 100a of the present embodiment can make lamp bar 120 and light guide plate 110a be maintained at default relative position, to promote light utilization ratio and area source quality. In the present embodiment, the emission side 124a of light-emitting component 124 is such as the incidence surface 116 of contact light guide plate 110a, but in other embodiments, also by the position adjusting locating aperture structure 123 and positioning convex structure 113, and make the emission side 124a of light-emitting component 124 also can keep suitable spacing with the incidence surface 116 of light guide plate 110a.

It should be noted that, this utility model is not limiting as positioning convex structure 113 and is arranged on the exiting surface 112 of light guide plate 110a. As in figure 2 it is shown, it illustrates the sectional perspective schematic diagram of a kind of backlight module of another embodiment of this utility model. In the embodiment shown in Figure 2, positioning convex structure 113 may be provided on the bottom surface 114 of light guide plate 110b. That is, the bottom surface 114 of the light guide plate 110b of backlight module 100b can have the positioning convex structure 113 of contiguous incidence surface 116, and the substrate 122 of lamp bar 120 is configured at below the bottom surface 114 of light guide plate 110b, and combine with the positioning convex structure 113 of light guide plate 110b with locating aperture structure 123. Additionally, the configuration of positioning convex structure 113 is not limited with the present embodiment, in other embodiments, positioning convex structure also can have other different configurations.

For example, refer to Fig. 3, it illustrates the sectional perspective schematic diagram of a kind of backlight module of this utility model another embodiment. The positioning convex structure 113c of the light guide plate 110c of the present embodiment can comprise multiple projection 113a, and locating aperture structure 123c includes multiple opening 123a of coordinating with projection 113a. After projection 113a embeds corresponding opening 123a, lamp bar 120 can assemble fixing with light guide plate 110c. It will be understood that the quantity of projection 113a described in the present embodiment and opening 123a is merely illustrative, the quantity of projection 113a and opening 123a is determined by design requirement. The quantity of projection 113a can be at least one, and the quantity of opening 123a is alternatively at least one, and closes with the cooperating number of projection 113a.

Additionally, refer to Fig. 4, it illustrates the cross-sectional schematic of a kind of backlight module of this utility model another embodiment. It will be understood that the lamp bar 120 of the backlight module 100d of the present embodiment is all similar to light guide plate 110a to the lamp bar 120 of the backlight module 100a mentioned by the embodiment shown in Fig. 1 to produced effect to the configuration of light guide plate 110a, therefore at this not repeated description. As shown in Figure 4, compared to above-mentioned backlight module 100a, the backlight module 100d of the present embodiment also includes blooming 130 and reflector plate 140. Blooming 130 is configured at above the exiting surface 112 of light guide plate 110a, with uniformly from the area source of exiting surface 112 outgoing or the light type adjusting area source. The quantity of blooming 130 can be at least a piece of, and blooming 130 can be diffusion barrier, brightness enhancement film (BrightnessEnhancementFilm, BEF) etc., but is not limited to this. On the other hand, reflector plate 140 is configured at below the bottom surface 114 of light guide plate 110a so that can be reflected back light guide plate 110a by reflector plate 140 from the light of light guide plate 110a bottom surface 114 outgoing, to increase light utilization ratio.

Additionally, the backlight module 100d of the present embodiment also can also include glue frame 150 and backboard 160. Glue frame 150 has the multiple sidepieces 152 (relation because of sectional view around light guide plate 110a, Fig. 4 only illustrates a sidepiece 152) and extend to the multiple support portions 154 (relation because of sectional view above the exiting surface 112 of light guide plate 110a from least part of sidepiece 152, Fig. 4 only illustrates a support portion 154), wherein support portion 154 can carry display floater (not shown go out), such as display panels. On the other hand, backboard 160 has diapire 162, is connected to multiple sidewalls 164 of diapire 162 and the roof 166 relative with diapire 162, and diapire 162 carries light guide plate 110a and glue frame 150, and sidewall 164 is around glue frame 150, light guide plate 110a and lamp bar 120. Reflector plate 140 is configured between diapire 162 and light guide plate 110a. Roof 166 connects one of them sidewall 164 corresponding to light-emitting component 124, and covers the part exiting surface 112 of light guide plate 110a. In the present embodiment, roof 166 such as also covers positioning convex structure 113. Roof 166 and the sidewall 164 connected and the base wall portion 162 corresponding with roof 166 thereof can as lampshades, when making light-emitting component 124 luminescence of lamp bar 120, the light not having directive light guide plate 110a can be blocked by the roof 166 of backboard 160, without forming visual veiling glare, with ensure backlight module 100d overall go out light quality.

Additionally, the backlight module 100d of the present embodiment also can farther include glue material 170, glue material 170 gluing is between the roof 166 of backboard 160, substrate 122 and positioning convex structure 113, make the roof 166 of backboard 160, substrate 122 and positioning convex structure 113 can pass through glue material 170 and bind fixing each other, but be not limited to this. In other embodiments, the roof of backboard, substrate and positioning convex structure also can be intimate contact with one another, without aforementioned components being binded fixing each other via aforementioned glue material 170.

Refer to Fig. 5, it illustrates the cross-sectional schematic of a kind of backlight module of this utility model another embodiment. Should be appreciated that, the configuration of the lamp bar 120 of the backlight module 100e of the present embodiment, light guide plate 110a, blooming piece 130 and reflector plate 140 and risen effect all to the embodiment shown in Fig. 4 mentioned by the lamp bar 120 of backlight module 100d, light guide plate 110a, blooming piece 130 and reflector plate 140 similar, therefore at this not repeated description. As it is shown in figure 5, the backlight module 100d compared to Fig. 4, the backlight module 100e of the present embodiment also include lampshade 180 and backboard 190, but do not include the backboard 160 of Fig. 4. It is to say, the backboard 190 of the present embodiment is the backboard without lampshade function. Lampshade 180 is coated with lamp bar 120 and part light guide plate 110a, lampshade 180 has the sidewall 182 corresponding to light-emitting component 124 and the diapire 184 and the roof 186 that are connected to sidewall 182, wherein diapire 184 extends to below part light guide plate 110a, roof 186 covering part separates bright finish 112, when making light-emitting component 124 luminescence of lamp bar 120, the light not having directive light guide plate 110a can be blocked by the roof 186 of lampshade 180, without forming visual veiling glare, with ensure backlight module 100e overall go out light quality. On the other hand, backboard 190 is coated with lampshade 180 and light guide plate 110a and lampshade 180 and light guide plate 110a is housed in the inner, and exposes the exiting surface 112 of light guide plate 110a.

In addition, in the present embodiment, backlight module 100e can also include glue material 170, glue material 170 gluing is between the roof 186 of lampshade 180, substrate 122 and positioning convex structure 113, and the roof 186 of lampshade 180, substrate 122 and positioning convex structure 113 are binded fixing each other by glue material 170, but it is not limited to this, in other embodiments, the roof of lampshade, substrate and positioning convex structure also can be in close contact, without aforementioned components being binded fixing each other via aforementioned glue material 170.

In sum, the backlight module of embodiment of the present utility model at least has one of them advantage following, the lamp bar of the backlight module of this utility model embodiment and light guide plate can combine mutually via the locating aperture structure corresponded to each other and positioning convex structure and firmly assembled with one another, the relative position making lamp bar and light guide plate can be fixed really, without producing to assemble dislocation, and without forming wide arc gap between lamp bar and light guide plate, so it is avoided that the light utilization ratio variation of backlight module or the problem of area source quality variation. Therefore, the backlight module of this utility model embodiment can improve light utilization ratio and area source quality.

The foregoing is only preferred embodiment of the present utility model, the scope that this utility model is implemented can not be limited with this, all simple equivalences made according to this utility model claim and utility model content change and amendment, all still belong in the scope that this utility model patent contains. It addition, any embodiment of the present utility model or claim are not necessary to reach the whole purposes disclosed by this utility model or advantage or feature. Additionally, summary part and title are intended merely to the use of auxiliary patent document retrieval, not it is used for limiting interest field of the present utility model. Additionally, terms such as " first ", " second " mentioned in this specification or claim is only in order to the different embodiment of title or difference naming element (element) or scope, and not it is used for the upper limit or the lower limit that limit in number of elements.

[symbol description]

100a, 100b, 100c, 100d, 100e: backlight module

110a, 110b, 110c: light guide plate

112: exiting surface

113,113c: locating convex block structure

113a: projection

114: bottom surface

116: incidence surface

118: the first sides

119: the second sides

120: lamp bar

122: substrate

123,123c: locating aperture structure

123a: opening

124: light-emitting component

124a: emission side

130: blooming

140: reflector plate

150: glue frame

152: sidepiece

154: support portion

160: backboard

162: diapire

164: sidewall

166: roof

170: glue material

180: lampshade

182: sidewall

184: diapire

186: roof

190: backboard.

Claims (10)

1. a backlight module, including:

One light guide plate, has a relative exiting surface and a bottom surface and the incidence surface being connected between this exiting surface and this bottom surface, wherein this exiting surface and this bottom surface one of them there is the positioning protrusion structure of this incidence surface contiguous; And

One lamp bar, including a substrate and multiple light-emitting component,

This substrate have to should a location hatch frame of positioning convex structure, and this substrate and this light guide plate be bonded to each other by this locating aperture structure and this positioning convex structure,

Multiple light-emitting components are configured on this substrate, and these light-emitting components each have the emission side towards this incidence surface.

2. backlight module as claimed in claim 1, it is characterized in that, this light guide plate also has one first relative side and one second side, this first side and this second side are connected between this incidence surface, this bottom surface and this exiting surface, this positioning convex structure includes a projection, the contour connection of this projection is in this incidence surface, this first side and this second side, and this locating aperture structure includes the opening coordinated with this projection.

3. backlight module as claimed in claim 1, it is characterised in that this positioning convex structure includes at least one projection, and this locating aperture structure includes at least one opening of coordinating with this at least one projection.

4. backlight module as claimed in claim 1, it is characterised in that these emission side of these light-emitting components contact this incidence surface.

5. backlight module as claimed in claim 1, it is characterised in that this substrate is flexible PCB.

6. backlight module as claimed in claim 1, it is characterised in that also include:

At least one blooming, is configured at above this exiting surface; And

One reflector plate, is configured at this subjacent.

7. backlight module as claimed in claim 1, it is characterised in that also include:

One glue frame, has around multiple sidepieces of this light guide plate and extends to the multiple support portions above this exiting surface from these sidepieces at least partly; And

One backboard, there is a diapire, be connected to multiple sidewalls of this diapire and a roof relative with this diapire, this diapire carries this light guide plate and this glue frame, these sidewalls are around this glue frame, this light guide plate and this lamp bar, this roof connects one of them these sidewall corresponding to these light-emitting components, and covers this exiting surface of part.

8. backlight module as claimed in claim 7, it is characterised in that also including a glue material, wherein this positioning convex structure is positioned at this exiting surface, and this glue material gluing is between this roof of this backboard, this substrate and this positioning convex structure.

9. the backlight module described in claim 1, it is characterised in that also include:

One lampshade, is coated with this lamp bar and this light guide plate of part, and this lampshade has the sidewall corresponding to these light-emitting components and the diapire and the roof that are connected to this sidewall, and wherein this diapire extends to below this light guide plate of part, and this roof covers this exiting surface of part; And

One backboard, is coated with this lampshade and this light guide plate, and exposes this exiting surface of this light guide plate.

10. backlight module as claimed in claim 9, it is characterised in that also including a glue material, wherein this positioning convex structure is positioned at this exiting surface, and this glue material gluing is between this roof of this lampshade, this substrate and this positioning convex structure.