CN203560778U - Backlight assembly and display device - Google Patents

Abstract

The utility model describes a backlight assembly and contain backlight assembly's display device, include: a first backlight light source and a second backlight light source; a first flexible wiring board including a first region, a second region, and a third region. The first region is used for arranging a first backlight source, the second region is used for arranging a second backlight source, and the third region is used for electrically connecting the first region and the second region. The utility model provides a backlight unit and use backlight unit's display device can reach and improve flexible line way board material utilization ratio, has practiced thrift manufacturing cost, saves the counterpoint welding operation of pad, simplifies assembly process, only needs counterpoint and a welding, improves one of them purpose of production efficiency.

Description

A kind of backlight assembly and display unit

Technical field

The utility model relates to demonstration field, the display unit that particularly relates to a kind of backlight assembly and comprise this backlight assembly.

Background technology

Flat-panel screens is the display of current main flow, wherein liquid crystal display because have that external form is frivolous, power saving and the advantage such as radiationless and be widely used on the electronic products such as computer screen, mobile phone, personal digital assistant, flat-surface television.Liquid crystal display (Liquid Crystal Display, LCD) be a kind of by Standard devices together such as display panels, driving chip, polaroid, FPC (Flexible Printed Circuit, FPC) and backlight assemblies.

Current mobile terminal needs for providing button LED (Light Emitting Diode, the light emitting diode) lamp of backlight to be made on LCD backlight assembly to button or keyboard as the configuration feature of mobile phone etc. has determined complete machine in technical scheme.In prior art, most solution is that button LED lamp is made in to an independent lamp bar FPC is upper, and then this lamp bar FPC is welded to display panels FPC on main FPC.Same, it is upper that the backlight LED light of liquid crystal indicator is also made in an independent lamp bar FPC, and then it is upper that this lamp bar FPC is welded to main FPC, that is to say, and contraposition is welded on two lamp bar FPC respectively on main FPC at twice.Its concrete structure as shown in Figure 1, Fig. 1 be in prior art with the planar structure schematic diagram of the FPC of the liquid crystal indicator of button LED lamp, the FPC of liquid crystal indicator comprises main FPC7, backlight LED light FPC2 and press key lamp FPC5.Wherein, main FPC7 comprises againinterface area 8, bent area 9, thefirst weld zone 3 and thesecond weld zone 6, describedinterface area 8 is for being connected to display panels (not shown) by main FPC7, described bent area 9 connects describedinterface area 8 and described main FPC7, the width of described bent area 9 is consistent with the width of describedinterface area 8, described thefirst weld zone 3 is for the welding of main FPC7 and backlight LED light FPC2, and described thesecond weld zone 6 is for the welding of main FPC7 and press key lamp FPC5.On described backlight LED light FPC2, be provided with manybacklight LED lights 1, describedbacklight LED light 1 is linearly equidistantly to arrange along the long limit of backlight LED light FPC2, and it is upper by SMD components, to be welded on described backlight LED light FPC2, and described backlight LED light FPC2 is connected with main FPC7 by described the first weld zone 3.Press key lamp FPC5 is provided with apress key lamp 4, and is connected with main FPC7 by described thesecond weld zone 6.

In prior art as shown in Figure 1, the FPC of liquid crystal indicator comprises three FPC, i.e. main FPC, backlight LED light FPC and press key lamp FPC, and backlight LED light FPC and press key lamp FPC need be welded on respectively on main FPC, must be through twice location and twice welding, thereby produce, cause the cost of raw material to increase, assembly technology is complicated, makes the problem that production efficiency is low.

Utility model content

In view of this, the display unit that the utility model provides a kind of backlight assembly and comprises this backlight assembly.

A backlight assembly, comprising: the first back light, the second back light and the first FPC, described the first FPC is integrated, comprises first area, second area and the 3rd region.Described first area arranges the first back light, and described second area arranges the second back light, and described the 3rd region is electrically connected to described first area and described second area.

The utility model also provides a kind of display unit, comprising: display floater; The second FPC; And above-mentioned backlight assembly.Described backlight assembly is connected in described display floater by described the second FPC.

Compared with prior art, the utlity model has one of following outstanding advantage:

Backlight assembly provided by the utility model and use the display unit of described backlight assembly, owing to having adopted FPC backlight (the first FPC) integrated design, and improved FPC stock utilization, saved production cost, saved the wielding neck operation of a pad, simplify assembly technology, only needed a contraposition and once welding, improved production efficiency.

Accompanying drawing explanation

Fig. 1 is in prior art, the planar structure schematic diagram of the FPC of the liquid crystal indicator with button LED lamp of proposition;

Fig. 2 is in the utility model embodiment, the planar structure schematic diagram of first FPC with button LED lamp of proposition;

Fig. 3 is in the utility model embodiment, the planar structure schematic diagram in the first interface district that the first FPC of proposition comprises;

Fig. 4 is in the utility model embodiment, proposition comprise the planar structure schematic diagram with the backlight assembly of the first FPC of button LED lamp;

Fig. 5 is in the utility model embodiment, proposition comprise the local enlarged diagram with the backlight assembly of the first FPC of button LED lamp;

Fig. 6 is in the utility model embodiment, proposition comprise the planar structure schematic diagram with the display unit of the first FPC of button LED lamp;

Fig. 7 is in the utility model embodiment, the planar structure schematic diagram of the liquid crystal indicator after the 3rd region bending of the first FPC of proposition is fixed.

The specific embodiment

The utility model provides a kind of backlight assembly, comprising: the first back light, the second back light and the first FPC, described the first FPC is integrated, comprises first area, second area and the 3rd region.Described first area arranges at least one first back light, described second area arranges at least one second back light, described the first back light and described the second back light are positioned at the same side of described the first FPC, and described the 3rd region is electrically connected to described first area and described second area.Described backlight assembly also comprises LGP, a plurality of blooming piece and fixing accommodating described LGP, the glue frame of a plurality of blooming pieces and the chase coordinating with glue frame.Described glue frame comprises a groove at corresponding the 3rd regional location place, and described the 3rd region is fastened in described groove at least partly, and described second area is in glue frame outside.

The utility model also provides a kind of display unit, comprising: display floater, the second flexible circuitry and above-mentioned backlight assembly.Described the second FPC is connected in the pin in described first interface district by pad scolding tin, wherein, the quantity of pad and the quantity of pin are suitable.Described second area is fixedly connected on described display floater by the 3rd region and two-sided tape or the shading rubber belt of bending.。

For above-mentioned purpose of the present utility model, feature and advantage can more be become apparent, below in conjunction with drawings and Examples, the utility model is described further.

It should be noted that, set forth detail in the following description so that fully understand the utility model.But the utility model can be different from alternate manner described here and implements with multiple, and those skilled in the art can do similar popularization without prejudice to the utility model intension in the situation that.Therefore the utility model is not subject to the restriction of the following public specific embodiment.

Embodiment mono-

Please refer to Fig. 2, Fig. 2 is in the utility model embodiment, the planar structure schematic diagram of first FPC with button LED lamp of proposition.As shown in the figure, described thefirst FPC 10 is integrated, comprisesfirst area 10a,second area 10b and the 3rd region 10c.Describedfirst area 10a can arrange the first back light described at least one, described the first back light is to provide light source backlight for described display unit, described the first back light is cathode fluorescent tube (not shown) orbacklight LED light 11, but consider the aspects such as brightness uniformity, life-span, energy consumption, LED lamp is all better than cathode fluorescent tube, the preferred scheme of the present embodiment is for to arrange a plurality ofbacklight LED lights 11 at describedfirst area 10a, and a plurality of describedbacklight LED light 11 is linearly equidistantly to arrange.Describedsecond area 10b can arrange the second back light described at least one, and described the second back light provides back light for described display unit button, and the present embodiment be take describedsecond area 10b, and abutton LED lamp 12 is set is example.A plurality of describedbacklight LED light 11 and the describedbutton LED lamp 12 that the present embodiment is described is positioned at the same face of the first flexible PCB, be electrically connected to and be fixed on described the first FPC by surface mounting technology, therefore, only need a piece, saved technique.The3rd region 10c is used for being electrically connected to describedfirst area 10a and describedsecond area 10b.

Describedfirst area 10a also comprisesfirst interface district 10d, and as shown in Figure 3, Fig. 3 is in the utility model embodiment to the concrete structure of describedfirst interface district 10d, the planar structure schematic diagram in the first interface district that the first FPC of proposition comprises.Describedfirst interface district 10d comprises three pins, is respectively a common anode utmost point pin 13, backlight LED light negative electrode pin 14 and a button LED lamp cathode pin 15.So, button LED lamp cathode pin 15 and backlight LED light negative electrode pin 14 are arranged for independent minute, can independently control button LED lamp and backlight LED light.Need to illustrate, the quantity of the pin of the describedfirst interface district 10d described in the present embodiment is only for giving an example, and it is non-limiting, the quantity of the pin of in fact describedfirst interface district 10d also can be four or five even more, therefore, in practical application, art technology people can arrange by actual demand the quantity of the pin of describedfirst interface district 10d.

Described thefirst FPC 10 is integrated moldings; the describedfirst area 10a that described thefirst FPC 10 comprises and the FPC of describedsecond area 10b comprise base material, cover conductive layer and the protective layer on base material two sides, also comprise the second adhesive phase between the first adhesive phase between described base material and described conductive layer, described conductive layer and described protective layer.The FPC of described the3rd region 10c comprises base material, covers conductive layer and the protective layer of base material one side, also comprises the second adhesive phase between the first adhesive phase between described base material and described conductive layer, described conductive layer and described protective layer.

The FPC of described the3rd region 10c adopts single-sided structure, has both saved material, has saved cost, simultaneously again attenuate thickness, easy fracture not when the FPC of described the3rd region 10c is bent in subsequent technique.Described thefirst FPC 10 integrated moldings have been saved processing step, have improved production efficiency.

Please refer to Fig. 4 and Fig. 5, Fig. 4 is in the utility model embodiment, what propose comprises the planar structure schematic diagram with the backlight assembly of the first FPC of button LED lamp, Fig. 5 is in the utility model embodiment, proposition comprise the local enlarged diagram with the backlight assembly of the first FPC of button LED lamp.As shown in Figure 4, the described backlight assembly that the present embodiment provides also comprises theglue frame 16 of LGP (not shown), a plurality of blooming piece (not shown) and fixing accommodating described LGP, a plurality of blooming pieces and coordinates thechase 17 of glue frame.As shown in Figure 5, describedglue frame 16 comprises agroove 18 in the position of corresponding the3rd region 10c, makes described the3rd region 10c be fastened at least partly in describedgroove 18, and makes describedsecond area 10b extend the outside forglue frame 16.

Sidewall at describedglue frame 16 in the position of corresponding the3rd region 10c forms agroove 18, can not increase backlight assembly in the situation that the thickness at described the 3rd 10c place, region of described the first FPC, the describedsecond area 10b that exposes described the first FPC, and the aligning accuracy can improve described the first FPC assembling by describedgroove 18 time.

Embodiment bis-

The utility model also provides a kind of display unit, and as shown in Figure 6, Fig. 6 is in the utility model embodiment, proposition comprise the planar structure schematic diagram with the display unit of the first FPC of button LED lamp.Described display unit comprises:display floater 21; Thesecond FPC 19; And backlight assembly, described backlight assembly is connected in describeddisplay floater 21 by described thesecond FPC 19, described backlight assembly adopts the backlight assembly described in above-described embodiment one, and generally, the display unit described in the present embodiment is liquid crystal indicator.On described thesecond FPC 19, three pin places offirst interface district 10d are provided with three pad (not shown)s described in the described first area of corresponding described the first FPC backlight.Thesecond FPC 19 is connected in the pin offirst interface district 10d by pad scolding tin, wherein, the quantity of pad and the quantity of pin are suitable.

Display unit as shown in Figure 6, owing to having adopted FPC backlight and the integrated design of key-press backlight FPC, the wielding neck operation of having saved a pad, has simplified assembly technology, only needs a contraposition and once welding, has improved production efficiency.

Please refer to Fig. 7, Fig. 7 is in the utility model embodiment, the planar structure schematic diagram of the liquid crystal indicator after the 3rd region bending of the first FPC of proposition is fixed.Describedglue frame 16 comprises agroove 18 in the position (being parallel to the width of described the first FPC near the sidewall at described the 3rd 10c place, region of described the first FPC) of corresponding the3rd region 10c, make described the3rd region 10c be fastened at least partly in describedgroove 18, and make describedsecond area 10b extend the outside for glue frame 16.Whendisplay panels 21 is assembled fixedly with above-mentioned backlight assembly (not shown), by the3rd region 10c bending described in described the first FPC, cansecond area 10b be fixed ondisplay panels 21 with shading rubber belt 20, the light-emitting area of describedbutton LED lamp 12 and display panels light-emitting area are positioned at the same face.The described second area that also double faced adhesive tape can be invested to described the first FPC does not arrange the one side of button LED lamp, whendisplay panels 21 is assembled fixedly with above-mentioned backlight assembly (not shown), by the3rd region 10c bending described in described the first FPC, with double faced adhesive tape,second area 10b is fixed ondisplay panels 21, the light-emitting area of describedbutton LED lamp 12 and display panels light-emitting area are also positioned at the same face.

Backlight assembly provided by the utility model and use the liquid crystal indicator of described backlight assembly, owing to having adopted FPC backlight and the integrated design of key-press backlight FPC, not only improved FPC stock utilization, saved production cost, and the wielding neck operation of having saved a pad, simplify assembly technology, only needed a contraposition and once welding, improved production efficiency.

Above content is in conjunction with concrete preferred embodiment further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.

Claims (10)

1. a backlight assembly, comprising:

The first back light;

The second back light; And

The first FPC, described the first FPC is integrated, comprise first area, second area and the 3rd region, wherein, described first area arranges the first back light, described second area arranges the second back light, and described the 3rd region is electrically connected to described first area and described second area.

2. backlight assembly as claimed in claim 1, is characterized in that, described backlight assembly also comprises LGP, a plurality of blooming piece and fixing accommodating described LGP, the glue frame of a plurality of blooming pieces and the chase coordinating with glue frame.

3. backlight assembly as claimed in claim 1, is characterized in that, described first area arranges the first back light described at least one; Described second area arranges the second back light described at least one; Wherein, described the first back light and described the second back light are positioned at the same side of described the first FPC.

4. backlight assembly as claimed in claim 1, is characterized in that, described first area and described second area comprise base material, cover the conductive layer on base material two sides and the protective layer of coated described base material and described conductive layer.

5. backlight assembly as claimed in claim 1, is characterized in that, described the 3rd region comprises base material, covers the base material wherein conductive layer of one side and the protective layer of coated described base material and described conductive layer.

6. backlight assembly as claimed in claim 1, is characterized in that, described first area also comprises first interface district, and described first interface district comprises at least three pins, and described pin comprises at least one anode pin and at least two negative electrode pins.

7. backlight assembly as claimed in claim 2, is characterized in that, described glue frame comprises a groove at corresponding the 3rd regional location place, and described the 3rd region is fastened in described groove at least partly, and described second area is in glue frame outside.

8. a display unit, comprising:

Display floater;

The second FPC; And

Backlight assembly as described in claim 1-7 any one, described backlight assembly is connected in described display floater by described the second FPC.

9. display unit as claimed in claim 8, is characterized in that, described the second FPC is connected in the pin in described first interface district by pad scolding tin, and wherein, the quantity of described pad and the quantity of described pin are suitable.

10. display unit as claimed in claim 8, is characterized in that, described second area is fixedly connected on described display floater by the 3rd region and two-sided tape or the shading rubber belt of bending.

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