CN201706345U

CN201706345U - Backlight module and liquid crystal displaying device

Info

Publication number: CN201706345U
Application number: CN2010202481766U
Authority: CN
Inventors: 梁忠政
Original assignee: SUZHOU XIANGLONG PLASTIC CO Ltd
Current assignee: SUZHOU XIANGLONG PLASTIC CO Ltd
Priority date: 2010-07-02
Filing date: 2010-07-02
Publication date: 2011-01-12
Anticipated expiration: 2020-07-02

Abstract

The utility model relates to a backlight module and a liquid crystal displaying device, wherein the backlight module comprises a light guide plate, a plurality of luminescent components, a back frame and a supporting fixed component, wherein the light guide plate comprises at least one through hole; a plurality of luminescent components are arranged on the side surface of the light guide plate; the back frame comprises at least one blow hole with the position corresponding to the through hole; the light guide plate and the luminescent components are arranged in the back frame; the supporting fixed component is provided with a main body, a buckling part and at least one pressing part; the buckling part is connected with one end of the main body and the pressing part is connected with one side of the main body; the buckling part and partial main body pass through the through hole of the light guide plate and the blow hole of the back frame; the buckling part is buckled to the back frame; the pressing part presses the light guide plate; and the light guide plate and the films arranged below the light guide plate can be well fixed, and furthermore, the light guide plate and the optical films arranged above the light guide plate can have suitable light mixing distance so as to provide uniform planar light sources.

Description

Backlight module and liquid crystal indicator

Technical field

The utility model relates to a kind of backlight module, relates in particular to the structure of this backlight module and contains the liquid crystal indicator of this backlight module.

Background technology

In recent years, because liquid crystal indicator has obtained application widely with characteristics such as light, thin, little and power consumption are low on electron image products such as mobile computer, digital camera, TV.

Generally speaking, liquid crystal indicator is made of liquid crystal panel and backlight module.Liquid crystal panel changes the throughput of light in different picture elements zone, and causes light and shade difference in different picture elements zone, to reach the purpose of show image by the rotation of liquid crystal molecule and the effect of Polarizer.

Because liquid crystal itself does not have the characteristics of luminescence, provide area source so need to rely on backlight module.Backlight module can roughly be divided into: lateral incident type backlight module and direct type backlight module, wherein, direct type backlight module needs long light mixing distance to reach the effect of even mixed light, so the thickness of direct type backlight module is thicker, is unsuitable for the making of thin-type display device; The light emitting diode and the lateral incident type backlight module can be arranged in pairs or groups has the advantage of thinner thickness.

Along with liquid crystal indicator gradually towards trend developments such as large scale, high contrast and slimmings, the lateral incident type backlight module has become main flow, particularly, following backlight module is also proposed, that is, this backlight module can utilize a plurality of undersized LGPs of splicing and obtain large-area splicing LGP, but the mode of also mating area regulation and control backlight (Local Dimming) realizes the display effect of the high dynamic contrast of liquid crystal indicator.

Yet whether the area source that the flatness of splicing LGP will influence backlight module to be provided is even.In other words, if fail well the diaphragm etc. of fixing splicing LGP and below thereof, will make the diaphragm of splicing LGP and below thereof produce perk, and uniform surface light source can't be provided.

In addition, in the lateral incident type backlight module, do not have enough light mixing distance between the blooming piece of LGP and top thereof, will cause the problem of area source uniformity deficiency yet.

Summary of the invention

The utility model technical issues that need to address have provided a kind of backlight module, are intended to solve the above problems;

The utility model also provides the liquid crystal indicator that contains above-mentioned backlight module.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

Backlight module of the present utility model comprises: a LGP; Described LGP comprises having a perforation at least; A most luminescence component; A described majority luminescence component is arranged on the side of this LGP; One back of the body frame; Described back of the body frame comprises having the holes of position corresponding to this perforation at least; This LGP and those luminescence components are arranged in this back of the body frame; Also comprise: a support fixation assembly; Described support fixation assembly has a main body, a buckling parts and at least one press section; This buckling parts is connected in an end of this main body, and this press section is connected in a side of this main body; This buckling parts passes this perforation of this LGP and this holes of this back of the body frame with this main body of part, and this buckling parts is fastened on this back of the body frame, and this LGP is pushed in this press section;

Liquid crystal indicator of the present utility model comprises: above-mentioned backlight module; An and liquid crystal panel; Described liquid crystal panel is arranged on a side of this backlight module.

Compared with prior art, the beneficial effects of the utility model are: the diaphragm of lightguide plate fixing and below thereof well not only, and can also make between the blooming piece of LGP and LGP top and have proper light mixing distance, so that uniform surface light source to be provided; In addition, also can utilize the bending assembly collocation support fixation assembly of back of the body frame, and the diaphragm of lightguide plate fixing and below thereof further.

Description of drawings

Figure 1A is the three-dimensional explosive view of part assembly of the backlight module of the utility model first embodiment.

Figure 1B is the three-dimensional explosive view of the part assembly of the alternative backlight module of the utility model first embodiment.

Fig. 2 is the generalized section of the backlight module of Figure 1B.

Fig. 3 is the schematic diagram of the backlight module of the utility model second embodiment.

Fig. 4 is the schematic perspective view of the sub-LGP of the utility model second embodiment.

Fig. 5 is the enlarged diagram of the regional A of Fig. 4.

Fig. 6 is the enlarged diagram of the area B of Fig. 4.

Fig. 7 is the enlarged diagram of the zone C of Fig. 4.

Fig. 8 is the schematic perspective view of LGP of the splicing of Fig. 3.

Fig. 9 is the schematic perspective view of the backlight module of the utility model second embodiment.

Figure 10 is the generalized section of the backlight module of the utility model second embodiment.

Figure 11 is the schematic diagram of a kind of liquid crystal indicator of the utility model embodiment.

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:

The utility model provides a kind of backlight module, the diaphragm of lightguide plate fixing and below thereof well not only, and can make between the blooming piece of LGP and top thereof and have enough light mixing distance, so that uniform surface light source to be provided.

The utility model provides a kind of liquid crystal indicator, has above-mentioned backlight module, can show the image with good quality.

Based on above-mentioned, the utility model proposes a kind of backlight module, comprising: LGP, most luminescence components, back of the body frame and support fixation assemblies.LGP has a perforation at least.Luminescence component is arranged on the side of LGP.Back of the body frame has the holes of position corresponding to perforation at least, and LGP and luminescence component are arranged in the back of the body frame.The support fixation assembly has a main body, a buckling parts and at least one press section, and buckling parts is connected in an end of main body, and the press section is connected in a side of main body, wherein, buckling parts and part main body are passed the perforation of LGP and the holes of back of the body frame, and buckling parts is fastened on back of the body frame, and LGP is pushed in the press section.

In an embodiment of the present utility model, above-mentioned LGP is a single sheet material, and has most perforations.

In an embodiment of the present utility model, above-mentioned LGP most the splicing LGPs that sub-LGPs are spliced of serving as reasons, at least one corner of each sub-LGP is provided with a depression, and is spliced into most perforations by the depression of a plurality of sub-LGPs.

In an embodiment of the present utility model, above-mentioned each sub-LGP have relatively to a light in part and a stitching section, light in part adjacent one another are and stitching section are bonded to each other and form the splicing LGP, form an accommodation space in the junction of light in part and stitching section, luminescence component is arranged in the accommodation space and is positioned at the side of light in part.

In an embodiment of the present utility model, above-mentioned press section has two, and two these press sections are connected in the both sides of this main body.

In an embodiment of the present utility model, above-mentioned back of the body frame comprises: a backboard and a bending assembly, and backboard has holes, the bending assembly is adjacent to holes and with at angle back shaped, the bending assembly has a slot, and LGP is connected to slot, and two press sections compress LGP.

In an embodiment of the present utility model, above-mentioned side at LGP has a lug at least, and lug is connected to slot.

In an embodiment of the present utility model, above-mentioned backlight module more comprises optical sheet combination, is connected to main body.

In an embodiment of the present utility model, above-mentioned backlight module more comprises a reflector plate, is arranged at the below of LGP.

In an embodiment of the present utility model, above-mentioned backlight module more comprises a circuit board, is arranged at the below of reflector plate, and luminescence component is electrically connected at circuit board, and reflector plate is between circuit board and LGP.

In an embodiment of the present utility model, above-mentioned backlight module more comprises: an insulating barrier, be arranged at the below of circuit board, and circuit board is between reflector plate and insulating barrier.

In an embodiment of the present utility model, above-mentioned LGP has most bar grooves, and LGP is divided into a plurality of light-emitting zones.

In an embodiment of the present utility model, the side of above-mentioned LGP is provided with a micro-structural.

The utility model proposes a kind of liquid crystal indicator again, comprising: above-mentioned backlight module and liquid crystal panel.This liquid crystal panel is arranged at a side of backlight module.

First embodiment

Figure 1A is the three-dimensional explosive view of part assembly of the backlight module of the utility model first embodiment.Please refer to Figure 1A, backlight module 100 comprises: LGP 110, most luminescence components 120, back of the body frame 130 and support fixation assemblies 140.LGP 110 has a perforation 110A at least.Luminescence component 120 is arranged at the side of LGP 110.Back of the body frame 130 has the holes 132A of position corresponding to perforation 110A at least, and LGP 110 is arranged in the back of the body frame 130 with luminescence component 120.Support fixation assembly 140 has a main body 142, a buckling parts 144 and a press section 146, buckling parts 144 is connected in an end of main body 142, press section 146 is connected in a side of main body 142, wherein, buckling parts 144 passes the perforation 110A of LGP 110 and the holes 132A of back of the body frame 130 with part main body 142, buckling parts 144 is fastened on back of the body frame 130, and LGP 110 is pushed in press section 146.

Support fixation assembly 140 shown in Figure 1A is local profile, demonstrates the annexation between main body 142, buckling parts 144 and the press section 146.It may be noted that this quantity of sentencing press section 146 is one and illustrates, yet the quantity of press section 146 can be at least one, and can adjust the quantity of press section 146 and the position is set according to the design needs.

For example, Figure 1B is the three-dimensional explosive view of the part assembly of the alternative backlight module of first embodiment.Please refer to Figure 1B, the assembly label is identical with Figure 1A, and quantity that it should be noted that press section 146 is two, and two press sections 146 are connected in the both sides of main body 142.LGP 110 can more preferably be pushed in two press sections 146.Certainly, press section 146 can be a right quantity arbitrarily.Below, be that example describes with the support fixation assembly 140 of Figure 1B.

In the present embodiment, LGP 110 is single sheet material for example, and has most perforation 110A.The position of perforation 110A is corresponding to the position of holes 132A.Utilize support fixation assembly 140 to pass perforation 110A and holes 132A, can be easily in conjunction with LGP 110 and back of the body frame 130.In addition, the main body 142 of support fixation assembly 140 also can be carried the blooming piece (being illustrated in Fig. 2) of its top.

Fig. 2 is the generalized section of the backlight module of Figure 1B.Please, in backlight module 100, below LGP 110, blooming piece and circuit board etc. can also be set, that is backlight module 100 can comprise reflector plate 150, circuit board 160 and insulating barrier 170 jointly with reference to Figure 1B and Fig. 2; And, optical sheet combination 180 also can be set above LGP 110, be connected to main body 142.Optical sheet combination 180 can be any combination of blooming pieces such as diffusion sheet 182, prismatic lens 184, blast sheet 186 and screening glass 188.

Please continue with reference to Fig. 2, reflector plate 150 is arranged at the below of LGP 110, the light that luminescence component 120 is launched can be reflected upward; Circuit board 160 is arranged at the below of reflector plate 150, and luminescence component 120 is electrically connected at circuit board 160, and reflector plate 150 is between circuit board 160 and LGP 110, and circuit board 160 can be controlled luminescence component 120 and light or extinguish; Insulating barrier 170 is arranged at the below of circuit board 160, and circuit board 160 is between reflector plate 150 and insulating barrier 170, and insulating barrier 170 can prevent that extraneous conductive component (not illustrating) from discharging to circuit board 160.

Similarly, corresponding perforation 110A on reflector plate 150, circuit board 160 and insulating barrier 170 and the position of holes 130A,

perforation

150A, 160A and 170A can be set, so that support fixation assembly 140 also can pass reflector plate 150, circuit board 160 and insulating barrier 170 respectively.

Particularly, because main body 142 has suitable height, and can between LGP 110 and optical sheet combination 180, cause a air gap AP.Thus, make from the light of LGP 110 outgoing to have proper light mixing distance, become uniform surface light source more with mixed light.

Hold above-mentioned, utilize support fixation assembly 140 not only can reach lightguide plate fixing 110 and below thereof diaphragm (reflector plate 150, circuit board 160 and insulating barrier 170), guarantee that the diaphragm of LGP 110 and below thereof becomes smooth, and, can also utilize the main body 142 of support fixation assembly 140 to come support of optical plate combination 180, cause the air gap AP so that suitable light mixing distance to be provided.Thus, backlight module 100 can provide suitable uniform surface light source.

Second embodiment

Fig. 3 is the schematic diagram of the backlight module of the utility model second embodiment.With reference to Fig. 3 as can be known, the backlight module 102 of Fig. 3 is similar to the backlight module 100 of Figure 1B, yet it may be noted that following two differences:

The backlight module 100 of first difference: Figure 1B uses the LGP 110 of single sheet material, and the LGP 110 ' of the backlight module 102 of Fig. 3 is the splicing LGP; The back of the body frame 130 of the backlight module 100 of second difference: Figure 1B only has holes 132A, and the back of the body frame 130 of the backlight module 102 of Fig. 3 also has bending assembly 134.

With regard to first difference specifically, LGP 110 ' most the splicing LGPs that sub-LGP 110a are spliced of serving as reasons, at least one corner of each sub-LGP 110a is provided with a depression G, and is spliced into most perforation 110A by the depression G of a plurality of sub-LGP 110a.The perforation 110A that these are spliced can allow support fixation assembly 140 pass through, so that support fixation assembly 140 can be fixed on the LGP 110 ' that is spliced on the back of the body frame 130.

With regard to second difference specifically, in backlight module 102, back of the body frame 130 can comprise: backboard 132 and bending assembly 134, backboard 132 has holes 132A, bending assembly 134 is adjacent to holes 130A and forms an angle θ with backboard 132, bending assembly 134 has a slot 134A, and LGP 110 ' is connected to slot 134A, and two press sections 146 compress LGP 110 '.That is to say, can further utilize the bending assembly 134 of back of the body frame 130, cooperation support fixation assembly 140 that LGP 110 ' is fixed in the back of the body frame 130 more well.

Bending assembly 134 for example is to utilize for backboard 132 to carry out punching press, bend and get.As shown in Figure 3, can make bending assembly 134 in several precalculated positions of backboard 132, be used for fixing a plurality of positions of LGP 110 '.Follow-up Fig. 9 and Figure 10 can further specify the bonding state of bending assembly 134, support fixation assembly 140 and LGP 110 ' again.

Fig. 4 is the schematic perspective view of the sub-LGP of the utility model second embodiment.Fig. 5 is the enlarged diagram of the regional A of Fig. 4.Fig. 6 is the enlarged diagram of the area B of Fig. 4.Fig. 7 is the enlarged diagram of the zone C of Fig. 4.

Please refer to Fig. 4, each sub-LGP 110a can have relatively to light in part 112 and stitching section 114, light in part 112 adjacent one another are can be bonded to each other with stitching section 114 and form the LGP 110 ' (being illustrated among Fig. 3, Fig. 8) of splicing.Light in part 112 forms cooperatively interact stepped with stitching section 114.In conjunction with after the upper surface of light in part 112 and the upper surface of stitching section 114 come down to be in same horizontal plane, and in conjunction with after the lower surface of light in part 112 and the lower surface of stitching section 114 come down to be in same horizontal plane.So, can make reflector plate 150, circuit board 160, insulating barrier 170 etc. entirely be arranged on the below of the LGP 110 ' that is spliced.

Please refer to the bending assembly 34 of Fig. 3, the sub-LGP 110a of Fig. 4 and the lug P of Fig. 5 know, the side of the stitching section 114 of LGP 110 ' (sub-LGP 110a) can have a lug P at least, and lug P can be connected to slot 134A.(correspondence position of regional A) also can make another lug P in the regional A ' of Fig. 4.Lug P is connected among the slot 134A of bending assembly 134.In addition, can know from Fig. 4 and Fig. 5 and to see that depression G is formed at least one corner of sub-LGP 110a, and in regional A, A ', can all be formed with depression G.When a plurality of sub-LGP 110a of splicing, the depression G of different sub-LGP 110a can be spliced into perforation 110A mutually, is used to make support fixation assembly 140 to pass.

Referring again to Fig. 4 and Fig. 6, LGP 110 ' (sub-LGP 110a) can have most bar groove S, and (sub-LGP 110a) is divided into a plurality of light-emitting zone R with LGP 110 '.Groove S can make the light of different light-emitting zone R be isolated from each other, and can form each district's while or not luminous simultaneously effect.Groove S makes when can utilize LGP 110 ' ejection formation, or utilizes groover (not illustrating) to make.

Referring again to Fig. 4 and Fig. 7, the side of the light in part 112 of LGP 110 ' (sub-LGP 110a) can be provided with a micro-structural MS.This micro-structural MS can be a plurality of minute grooves.Utilize micro-structural MS to impel to come from the light of the luminescence component 120 that is arranged on light in part 112 sides to enter in the LGP 110 ', to improve the light utilization ratio.

Fig. 8 is the schematic perspective view of LGP of the splicing of Fig. 3.Please refer to Fig. 8, each sub-LGP 110a have relatively to a light in part 112 and a stitching section 114, light in part 112 adjacent one another are and stitching section 114 are bonded to each other and form the LGP 110 ' of splicing.Junction in light in part 112 and stitching section 114 forms an accommodation space CS, and luminescence component 120 is arranged among the accommodation space CS and is positioned at the side of light in part 112.In addition, from Fig. 8, can be more clearly visible the mode of sub-LGP 110a splicing and the perforation 110A that is spliced.

Fig. 9 is the schematic perspective view of the backlight module of the utility model second embodiment.Figure 10 is the generalized section of the backlight module of the utility model second embodiment.Please refer to Fig. 9 and Figure 10, the light in part 112 of sub-LGP 110a is stitched together with the stitching section 114 of another sub-LGP 110a.Particularly, lug P and light in part 112 can be sticked among the slot 134A (can simultaneously with reference to Fig. 3) of bending assembly 134 simultaneously.Thus, utilize bending assembly 134 to carry out the fixedly action in first road for LGP 110 '.

Can see that holes 132A is present in the both sides that bend assembly 134 and forms approximately from Fig. 3 " the character cut in bas-relief shape ".As Fig. 9 and shown in Figure 10, by the top of backlight module 102 down, the part main body 142 of support fixation assembly 140 can be passed in regular turn: the perforation 160A of the perforation 110A of LGP 110 ', the perforation 150A of reflector plate 150, circuit board 160, the perforation 170A of insulating barrier 170 and be positioned at right-hand holes 132A of bending assembly 134.Afterwards, utilize buckling parts 144 that the diaphragm (reflector plate 150, circuit board 160, insulating barrier 170 etc.) of LGP 110 ' and below thereof is fixed on the back of the body frame 130, and utilize the press section 146 of main body 142 both sides to push the diaphragm (reflector plate 150, circuit board 160, insulating barrier 170 etc.) of LGP 110 ', bending assembly 134 and below thereof.That is to say, utilize support fixation assembly 140 also can carry out the fixedly action in second road.

In addition, because main body 142 has suitable height, and can between LGP 110 and optical sheet combination 180, cause a air gap AP.Thus, make from the light of LGP 110 outgoing to have proper light mixing distance, become uniform surface light source more with mixed light.

The structure of backlight module of the present utility model is not limited to the backlight module 100 of above-mentioned first embodiment and the backlight module 102 of second embodiment.More specifically, backlight module 100 is to utilize the LGP 110 of single sheet material and the back of the body frame 130 that does not have bending assembly 134 to combine; And backlight module 102 is to utilize the LGP 110 ' of splicing and the back of the body frame 130 with bending assembly 134 to combine.Yet, can also adopt the combination of LGP 110 with the back of the body frame 130 of single sheet material with bending assembly 134, or, the LGP 110 ' of splicing and the combination that does not have the back of the body frame 130 that bends assembly 134.These combinations all are contained within the creation spirit of the present utility model.

Figure 11 is the schematic diagram of a kind of liquid crystal indicator of the utility model embodiment.This liquid crystal indicator 200 can comprise: backlight module 210 and liquid crystal panel 220.This liquid crystal panel 220 is arranged at a side of backlight module 210.Backlight module 210 can adopt above-mentioned any backlight module.This liquid crystal indicator 200 can provide the image with good quality.

In sum, backlight module of the present utility model and liquid crystal indicator have the following advantages at least:

Adopt the support fixation assembly, the diaphragm of lightguide plate fixing and below thereof well not only, and can also make between the blooming piece above LGP and the LGP and have proper light mixing distance, so that uniform surface light source to be provided.In addition, also can utilize the bending assembly collocation support fixation assembly of back of the body frame, and the diaphragm of lightguide plate fixing and below thereof further.Liquid crystal indicator with above-mentioned backlight module can provide the image with good quality.

Though the utility model discloses as above with embodiment; right its is not in order to limit the utility model; has common knowledge under any in the technical field; in the spirit and scope that do not break away from the utility model; when doing a little change and retouching, so the protection domain of the utility model is as the criterion when looking accompanying Claim.

Claims

1. a backlight module is characterized in that comprising: a LGP; Described LGP comprises having a perforation at least; A most luminescence component; A described majority luminescence component is arranged on the side of this LGP; One back of the body frame; Described back of the body frame comprises having the holes of position corresponding to this perforation at least; This LGP and those luminescence components are arranged in this back of the body frame; Also comprise: a support fixation assembly; Described support fixation assembly has a main body, a buckling parts and at least one press section; This buckling parts is connected in an end of this main body, and this press section is connected in a side of this main body; This buckling parts passes this perforation of this LGP and this holes of this back of the body frame with this main body of part, and this buckling parts is fastened on this back of the body frame, and this LGP is pushed in this press section.

2. backlight module according to claim 1 is characterized in that: this LGP is a single sheet material, and has most these perforations.

3. backlight module according to claim 1, it is characterized in that: this LGP splicing LGP that most sub-LGPs are spliced of serving as reasons, at least one corner of each sub-LGP is provided with a depression, and is spliced into most these perforations by this depression of this a little LGP.

4. backlight module according to claim 3, it is characterized in that: each sub-LGP have relatively to a light in part and a stitching section, this light in part adjacent one another are and this stitching section are bonded to each other and form this splicing LGP, form an accommodation space in the junction of this light in part and this stitching section, those luminescence components are arranged in this accommodation space and are positioned at the side of this light in part.

5. backlight module according to claim 1 is characterized in that: this press section has two, and two these press sections are connected in the both sides of this main body.

6. backlight module according to claim 5, it is characterized in that: this back of the body frame comprises: a backboard and a bending assembly, this backboard has this holes, this bending assembly is adjacent to this holes and at angle back shaped with this, this bending assembly has a slot, this LGP is connected to this slot, and two these press sections compress this LGP.

7. backlight module according to claim 6 is characterized in that: the side at this LGP has a lug at least, and this lug is connected to this slot.

8. backlight module according to claim 1 is characterized in that: also comprise optical sheet combination, be connected to this main body.

9. backlight module according to claim 1 is characterized in that: also comprise a reflector plate, be arranged at the below of this LGP.

10. backlight module according to claim 9 is characterized in that: also comprise a circuit board, be arranged at the below of this reflector plate, those luminescence components are electrically connected at this circuit board, and this reflector plate is between this circuit board and this LGP.

11. backlight module according to claim 10 is characterized in that also comprising: an insulating barrier, be arranged at the below of this circuit board, this circuit board is between this reflector plate and this insulating barrier.

12. backlight module according to claim 1 is characterized in that: this LGP has most bar grooves, and this LGP is divided into a plurality of light-emitting zones.

13. backlight module according to claim 1 is characterized in that: the side of this LGP is provided with a micro-structural.

14. a liquid crystal indicator comprises: just like 1 to the 13rd each described backlight module of claim the; An and liquid crystal panel; Described liquid crystal panel is arranged at a side of this backlight module.