[background technology]
Along with developing rapidly of mobile phone industry, mobile phone shows that from initial single screen developing into double screen shows, and some than the type of higher-end on double screen show the more popular of performance.With respect to the double screen module in early stage, present double screen module shows that by early stage black and white, false colour display screen having become very color 65K, 262K look shows that the also relative increase of its size is also had higher requirement for its brightness and display effect simultaneously.
Early stage double screen shows that the major and minor display screen of module all is that FPC by separately welds with pcb board, is connected the purpose that reaches demonstration by the connector on the PCB again with cell phone mainboard.But its one-piece construction of opinion has main screen, secondary screen to use a structure backlight separately, main screen, structure backlight of the common use of secondary screen are also arranged, for example a kind ofly more special be, one of them screen is to adopt OLED (Organic LightEmitting Diode) to show, promptly can self be luminous, do not need to add in addition one backlight.Since the feature limits of OLED self size of screen, so all be that secondary screen shields for OLED usually.But the secondary screen of this double screen module viewing area is smaller, thickness is thicker, pixel is lower, and defective such as display effect is poor, can not satisfy popular demand.
The modular structure that the shared FPC of major and minor display screen is also arranged in the prior art.This modular structure is to go out square opening to be used for placing secondary display screen in the middle of FPC, but this modular structure is suitable for the very little situation of secondary screen size, but the size of present secondary display screen is increasing, if adopt the design of this embedding FPC formula, it is very big that the area of FPC need be selected, and can cause the outer deformation of entire module structure big like this.And the part of emptying in the middle of the FPC is a waste material, thereby has caused the very big waste of FPC.
[utility model content]
The utility model is little at the pair screen viewing area that double screen liquid crystal module of the prior art exists, and the shortcoming that has the FPC waste, and a kind of new double screen liquid crystal module is provided.
The technical solution of the utility model is:
A kind of double screen liquid crystal module, comprise main display, the main backlight module that cooperates with described main display, secondary display screen, the secondary backlight module, FPC and the pcb board that cooperate with described secondary display screen, wherein, described main display and secondary display screen are connected with an ITO golden finger that is arranged at described FPC two ends and the 2nd ITO golden finger respectively, and are folded to form " S " font structure; And described main backlight module and secondary backlight module are connected with described PCB respectively, and by described pcb board, go up the ZIF golden finger and the 2nd ZIF golden finger that are provided with described FPC and be connected.
The utility model has the advantages that:
Because the main display that comprises of this double screen liquid crystal module, the main backlight module that cooperates with described main display, FPC, secondary display screen, the secondary backlight module that cooperates with described secondary display screen are " S " font structure on connected mode, this structural design has avoided available technology adopting to go out square opening with ccontaining secondary display screen in the middle of FPC, so that cause the defective of FPC waste easily, and, adopt this double screen liquid crystal module, the area of its main display and secondary display screen area more of the prior art is bigger.Simultaneously, because this FPC adopts the ZIF golden finger to be connected with main backlight module and secondary backlight module by pcb board respectively, with respect to available technology adopting welded type ways of connecting,, can save the space of more placing elements for pcb board because that it takes up room is very little.And this double screen liquid crystal module is not owing to need FPC is emptied with ccontaining secondary display screen, thereby reduced the waste of FPC to a certain extent.
Feature of the present utility model and advantage will be elaborated in conjunction with Figure of description by embodiment.
[embodiment]
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The utility model provides a kind of double screen liquid crystal module, as shown in Figure 1, the main backlight module 5 (not shown in the accompanying drawing) that comprise main display 1, cooperates, secondary display screen 3, the secondary backlight module (not shown in the accompanying drawing) that cooperates with described secondary display screen 3, FPC2 and pcb board (not shown in the accompanying drawing) with described main display 1, wherein, described main display 1 and secondary display screen 3 are connected with an ITO golden finger that is arranged at described FPC2 two ends and the 2nd ITO golden finger respectively, and are folded to form " S " font structure; And described main backlight module 5 and secondary backlight module are connected with described PCB respectively, and by described pcb board, go up a ZIF (Zero Insertion Force, the ZIF) golden finger and the 2nd ZIF golden finger that are provided with described FPC2 and connect.
Continuation is with reference to Fig. 1, and referring to Fig. 2, respectively there is one group of ITO golden finger at described FPC2 two ends, is connected with main display 1, secondary display screen 3 screens respectively.The effect of this ITO golden finger is and ITO circuit turn-on on glass, to draw the function of IC.In the utility model, described FPC2 is bent, so that main display 1, the main backlight module 5 that cooperates with described main display 1, FPC2, secondary display screen 3 and the secondary backlight module that cooperates with described secondary display screen 3 can be folded into " S " font structure, promptly under flat, described main display 1, secondary display screen 3 are towards coplanar not.When the assembling mobile phone, main display 1 around described FPC2 bending once, secondary display screen 3 also around described FPC2 bending once, so, described main display 1 and the main backlight module 5 that cooperates with main display 1 insert and put described FPC2 with secondary display screen 3 and the secondary backlight module that cooperates with secondary display screen 3, from the side, described structure is " S " type or is anti-" Z " type, thereby realizes that main display 1, secondary display screen 3 display surfaces are opposing.The advantage of this design is when on the described FPC2 element being arranged, and can be hidden in described element in the member slot that is arranged on main module backlight or secondary module backlight; When not having element on the described FPC2, then can dwindle the width of this FPC2, save the FPC2 area, thereby reduced cost to a certain extent.
In the utility model, described double screen liquid crystal module also comprises framework 4, and described framework 4 is in order to fixing main backlight module 5, secondary display screen 3, the secondary backlight module and the FPC2 that cooperate with described secondary display screen 3.
More specifically, described framework 4 comprises the first ccontaining stratum 401 and the second ccontaining stratum that is ladder-like arranged, the described first ccontaining stratum 401 comprises first frame 41, the described second ccontaining stratum 402 comprises second frame 42, the lower limb of described first frame 41 inwardly protrudes out and is fixedly attached to the coboundary of described second frame 42 at least from both direction, and the lower limb of described second frame 42 inwardly protrudes out to form baffle plate 43 from a direction at least.
More specifically, on described first frame 41, offer at least one hole clipping 40, its with main backlight module 5 on the buckle 50 that is provided with corresponding one by one.
Perhaps, on described first frame 41, offer at least one buckle, its with main backlight module 5 on the hole clipping that is provided with corresponding one by one.
More specifically, on described second frame 42, several FPC through holes 44 have been opened.This FPC through hole 44 is mainly used in and makes the passing through and connect with corresponding module of pairing two the ITO golden fingers of FPC2 and two ZIF golden fingers, and because described FPC2 needs to bend in the process of assembling, therefore described FPC through hole 44 also has the effect in the bending district of ccontaining described FPC2, produces with the bending district that avoids framework and FPC2 and interferes.For the width of this FPC through hole 44, its width than the bending district of FPC2 is slightly wide, does not do too much here and gives unnecessary details.
More specifically, the manufacturing materials of described framework 4 is tinplate, stainless steel or foreign copper-nickel alloy.Under the preferable case, the manufacturing materials of described framework 4 is a stainless steel.
With reference to Fig. 3, according to an embodiment of the present utility model, described framework 4 is for adopting stainless framework 4, it is a stretching die, be designed to small one and large one two-layer stepped construction, above less part cooperate with secondary display screen 3 and secondary backlight module, bigger below part cooperates with main display 1 and main backlight module 5.Adopt the fixing structure of this framework 4 not only can conserve space, but also can strengthen ability the protection of whole double screen liquid crystal module.As shown in Figure 4, offer several buckles on the sidewall that described main backlight module need be fitted with described framework 4, it can match with the hole clipping 40 gone out on the framework 4.And, design has several baffle plates 43 on second frame 42 of described framework 4, after main display 1 and main backlight module 5 are inserted described framework 4, by cooperating of the hole clipping 40 on the buckle 50 on the described main backlight module 5 and the described framework 4, make this main display 1 can cooperate with the baffle plate 43 on described framework 4 second frames 42 with main backlight module 5, described secondary display screen 3 and secondary backlight module are limited in the second ccontaining stratum 402, thereby the motion of front and back up and down of secondary display screen 3 and secondary backlight module all is limited, and then has played positioning action.Simultaneously, design for this double screen liquid crystal module, make reprocessing of secondary display screen 3 and secondary backlight module also become more easy, detain framework 4 after only need pulling down main display 1 and main backlight module 5, secondary display screen 3 and secondary backlight module just can be easy to take out.
For the better protection module, has cushion (not shown in the accompanying drawing) between described main backlight module 5 and FPC2 and/or between described secondary backlight module and the FPC2.In the application process of reality, the material of described cushion can be foam or double faced adhesive tape, and certainly, the technician is not difficult to learn to also have other the material with buffer action to be substituted above-mentioned preferred implementation.But, it should be noted that when the distance between the major and minor backlight module be 0 or between 0.01~0.05mm the time, can not add cushion, because when design, itself just need to keep the build-up tolerance of 0.01~0.05mm between the major and minor backlight module.According to a kind of embodiment of the present utility model, can only add one deck cushion between described main backlight module 5 and the FPC2 or between described secondary backlight module and the FPC2.When the distance between the major and minor backlight module was between 0.06~0.15mm, the thickness of described cushion was 0.03mm~0.1mm, for example, under actual conditions, can select double faced adhesive tape or the foam of 0.03mm, 0.05mm or 0.1mm for use; When the distance between the major and minor backlight module during greater than 0.15mm, the thickness of described cushion is equal to or less than the distance between described main backlight module 5 and the secondary backlight module.After this cushion was set, this double screen liquid crystal module can absorb ambient pressure by the deformation of this cushion when being subjected to ambient pressure or collision, thereby played the effect of this double screen liquid crystal module of protection.
Because the main display 1 that comprises of this double screen liquid crystal module, the main backlight module 5 that cooperates with described main display 1, FPC2, secondary display screen 3, the secondary backlight module that cooperates with described secondary display screen 3 are " S " font structure on connected mode, this structural design has avoided available technology adopting to go out square opening with ccontaining secondary display screen 3 in the middle of FPC2, so that cause the defective of FPC2 waste easily, and, adopt this double screen liquid crystal module, the area area more of the prior art of its main display 1 and secondary display screen 3 is bigger.Simultaneously, because this FPC2 adopts the ZIF golden finger to be connected with main backlight module 5 and secondary backlight module by pcb board respectively, with respect to available technology adopting welded type ways of connecting,, can save the space of more placing elements for pcb board because that it takes up room is very little.And this double screen liquid crystal module is not owing to need FPC2 is emptied with ccontaining secondary display screen 3, thereby reduced the waste of FPC2 to a certain extent.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.