A kind of liquid crystal display module
Technical field
The utility model belongs to field of liquid crystal display, relates in particular to the structure of (Flexible Printed Circuit is called for short FPC) of flexible print circuit board in a kind of liquid crystal display module.
Background technology
Please refer to shown in Fig. 1-3, the liquid crystal display module of existing small-medium size, form by backlight module and liquid crystal display module, on the liquid crystal display module, be provided with driving circuit 11(IC chip) be used to drive liquid crystal display 1, and LED circuit for lamp 3 is arranged on the backlight module, usually all with the separately design of circuit of these two modules, last golden finger by FPC2 again connects this two circuit modules during existing modular structure design.
Fig. 1 is a liquid crystal display modular structure sketch, what first frame of broken lines 12 was represented is the junction of liquid crystal display (LCD screen) 1 and FPC2, FPC2 overlays on glass at liquid crystal display 1, be connected on the drive IC by golden finger ITO cabling on glass, so the peripheral circuit of drive IC and electronic component all need to be placed on the FPC2.For example: a among Fig. 1, b, c represent the electronic component on the FPC2, these electronic components mainly comprise electric capacity, resistance, diode etc., its electronic component is connected on the golden finger ITO at first frame of broken lines, 12 places by an end of FPC2 cabling, thereby is connected with drive IC.What second frame of broken lines, 22 places represented among Fig. 1 is the external data input interface that LCD drives FPC2, thereby external information drives the LCD screen by the data-interface at 22 places to drive IC input data, therefore the most of cabling of the golden finger at 22 places all is connected on the golden finger at first frame of broken lines, 12 places, ITO cabling by glass is connected on the input pin of drive IC then, simplified among the figure these cablings only expressed several main.The golden finger at 23 places is junctions that FPC3 backlight and LCD drive FPC2, and the golden finger of this part is connected on the golden finger at 22 places by the FPC cabling, so backlight electric power powers up for the golden finger at 22 places by the outside to provide.
Fig. 2 is the backlight modular structure sketch, comprise glue frame 31 backlight, be arranged at the FPC3 backlight on the framework, for after preventing from LCD driven FPC2 and be folded into the back side backlight, because the outstanding LCD driving FPC that causes of electronic component that LCD drives on the FPC2 can not closely be attached to the back side backlight, described framework is provided with the frame groove 311 of accommodating electronic component.FPC3 backlight mainly is a LED circuit for lamp backlight, what the LED lamp adopted in this circuit is the mode of being connected in series (seeing also the label 32-35 of LED lamp), can certainly adopt connected mode in parallel, further the LED lamp is placed near left border or Right Border place backlight according to the design needs; As a kind of concrete embodiment, the LED lamp is placed on the lower frame of glue frame backlight among Fig. 2.From Fig. 3, can know and see that FPC3 backlight and LCD drive the connected mode of FPC2, and two positions of FPC in the liquid crystal display module.
Because on the FPC2 that the peripheral electron element of drive IC all needs to be placed on LCD is connected, therefore the FPC2 that is connected with LCD needed to carry out one-time surface and mounts operation (Surface Mounted Technology before use, be called for short SMT), and for preventing that short circuit from also needing to paste one deck dielectric film to these electronic components.Therefore, production efficiency is low during making, and the FPC circuit that is connected with LCD is when being folded into the back side backlight and being connected with other circuit, is easy to cause coming off of electronic component on the FPC2 in the process of bending.
Summary of the invention
The purpose of this utility model is to solve the FPC that is connected with LCD in the prior art need place electronic component, production efficiency is low when causing making, and the technical matters that electronic component comes off easily during bending, a kind of novel liquid crystal display module is provided, to change with the electronic component on the FPC that LCD is connected and be placed on the FPC backlight, make things convenient for simple and direct when making with FPC that LCD is connected.
A kind of liquid crystal display module, comprise the liquid crystal display module and provide backlight module backlight for the liquid crystal display module shows, described liquid crystal display module comprises liquid crystal display and the liquid crystal drive flexible print circuit board of drive signal is provided for liquid crystal display, overlayed driving circuit on the described liquid crystal display, described liquid crystal drive flexible print circuit board is connected with driving circuit; Described backlight module comprises glue frame backlight and the light emitting diode of light source is provided for backlight module, light emitting diode is arranged on the flexible print circuit board backlight, the peripheral electron element that wherein also comprises the driving circuit that is arranged on the flexible print circuit board backlight, described peripheral electron element is electrically connected with the liquid crystal drive flexible print circuit board.
Further, described flexible print circuit board backlight is provided with pad, and the peripheral electron element of driving circuit is by pad and flexible print circuit board backlight welding.
Further, described liquid crystal drive flexible print circuit board is provided with first golden finger, on the described flexible print circuit board backlight second golden finger is set, first golden finger is connected with second golden finger, and the peripheral electron element of driving circuit is connected with second golden finger by cabling.
Further, the thickness of the thickness of the peripheral electron element of driving circuit and light emitting diode equates on the described flexible print circuit board backlight.
Further, described flexible print circuit board backlight sticks on the glue frame backlight of backlight module.
Further, the thickness of the peripheral electron element of driving circuit is thicker than the thickness of light emitting diode on the described flexible print circuit board backlight.
Further, described glue frame backlight is provided with the frame groove, and the electronic component of described driving circuit is contained in the frame groove.
Further, described electronic component comprises resistance, electric capacity and diode.
The liquid crystal display module that the utility model provides, the peripheral electron element of described driving circuit is arranged on the flexible print circuit board backlight, by being connected of flexible print circuit board backlight and liquid crystal drive flexible print circuit board, realize the peripheral electron element of driving circuit and being connected of driving circuit, make the design of liquid crystal drive flexible print circuit board more succinct.Because the peripheral electron element of driving circuit all has been placed on the flexible print circuit board backlight, therefore can solve the liquid crystal drive flexible print circuit board problem that electronic component comes off easily when bending; And in liquid crystal drive flexible print circuit board manufacturing process, saved soldering of electronic components, pasted these operations of dielectric film, just increase the quantity of soldering of electronic components on the flexible print circuit board backlight, thereby improved the production efficiency when making to a certain extent.
Description of drawings
Fig. 1 is the liquid crystal display modular structure synoptic diagram that prior art provides.
Fig. 2 is the backlight modular structure synoptic diagram that prior art provides.
Fig. 3 is the schematic rear view that the liquid crystal display module that provides of prior art and backlight module are combined.
Fig. 4 is the schematic rear view of the liquid crystal display module that provides of the utility model.
Embodiment
Clearer for technical matters, technical scheme and beneficial effect that the utility model is solved, below in conjunction with embodiment, the utility model is further elaborated.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.
Please refer to shown in Figure 4, a kind of liquid crystal display module, comprise the liquid crystal display module and provide backlight module backlight for the liquid crystal display module shows, described liquid crystal display module comprises liquid crystal display and the liquid crystal drive flexible print circuit board 41 of drive signal is provided for liquid crystal display, overlayed driving circuit on the described liquid crystal display, described liquid crystal drive flexible print circuit board 41 is connected with driving circuit; Described backlight module comprises glue frame 42 backlight and the light emitting diode 431 of light source is provided for backlight module, light emitting diode 431 is arranged on the flexible print circuit board 43 backlight, wherein also comprise the peripheral electron element 432 that is arranged on the driving circuit on the flexible print circuit board 43 backlight, described peripheral electron element 432 is electrically connected with liquid crystal drive flexible print circuit board 41.
The liquid crystal display module that the utility model provides, the peripheral electron element of described driving circuit is arranged on the flexible print circuit board backlight, by being connected of flexible print circuit board backlight and liquid crystal drive flexible print circuit board, realize the peripheral electron element of driving circuit and being connected of driving circuit, make the design of liquid crystal drive flexible print circuit board more succinct.Because the peripheral electron element of driving circuit all has been placed on the flexible print circuit board backlight, therefore can solve the liquid crystal drive flexible print circuit board problem that electronic component comes off easily when bending; And in liquid crystal drive flexible print circuit board manufacturing process, saved soldering of electronic components, pasted these operations of dielectric film, just increase the quantity of soldering of electronic components on the flexible print circuit board backlight, thereby improved the production efficiency when making to a certain extent.
Further, described flexible print circuit board 43 backlight is provided with pad, and the peripheral electron element 432 of driving circuit is by pad and flexible print circuit board backlight 43 welding.Because itself just is provided with light emitting diode 431 on the flexible print circuit board backlight, light emitting diode need be mounted on the flexible print circuit board backlight, now electronic component 432 is placed on the flexible print circuit board backlight, connection and light emitting diode by pad are arranged on the flexible print circuit board backlight together, just increased the quantity of mounted with electronic components in the SMT operation backlight this moment, easy to make quick.
Further, described liquid crystal drive flexible print circuit board 41 is provided with first golden finger, on the described flexible print circuit board backlight 43 second golden finger is set, first golden finger is connected at the 3rd frame of broken lines 44 places with second golden finger, and the peripheral electron element 432 of driving circuit is connected with second golden finger by cabling.Therefore, when design flexible print circuit board backlight, except needs increase the pad of aforementioned soldering of electronic components, also need to increase the golden finger that connects electronic component, this golden finger forms second golden finger together with the golden finger that is connected light emitting diode, and the peripheral electron element of outer driving circuit is connected on second golden finger by cabling then.Therefore when design liquid crystal drive flexible print circuit board 41, the pin that driving circuit need have been connected originally electronic component, according to the order that is connected with the golden finger of described electronic component on the flexible print circuit board 43 backlight, be connected on the golden finger of liquid crystal drive flexible print circuit board 41, guarantee on the pin that is connected to driving circuit that described electronic component can be correct that promptly the link position of each electronic component wants corresponding.
Further, the thickness of the thickness of the peripheral electron element 432 of driving circuit and light emitting diode 431 equates on the described flexible print circuit board backlight 43.Because glue frame 42 backlight is to have certain thicknessly, selects for use the thickness of the thickness of peripheral electron element 432 and light emitting diode 431 to equate, for example some specification electronic component be encapsulated as 0402, the thickness of itself and light emitting diode commonly used is just similar.Therefore, can not consider the interference of electronic component and glue frame 42 backlight because this moment the thickness of light emitting diode and the thickness difference of electronic component few.At described situation, described flexible print circuit board backlight 43 can adopt existing combination, it is sticked on the glue frame 42 backlight of backlight module, like this electronic component and light emitting diode stick on together backlight on, can not be subjected to the bending of external force and cause electronic component to come off.
Further, the thickness of the peripheral electron element 432 of driving circuit is thicker than the thickness of light emitting diode on the described flexible print circuit board backlight 43.Because glue frame 42 backlight is to have certain thicknessly, selects for use the thickness of peripheral electron element 432 thicker than the thickness of light emitting diode 431, for example some specification electronic component be encapsulated as 0603, the thickness of itself and light emitting diode commonly used is compared will be thicker.Therefore, need to consider the interference problem of electronic component and glue frame 42 backlight because this moment light emitting diode thickness than the thin thickness of electronic component some.At described situation, need on glue frame 42 backlight, frame groove 421 be set, the electronic component 432 of described driving circuit is contained in the frame groove 421, electronic component can not be subjected to the bending of external force yet and cause coming off like this.
Simultaneously; at aforementioned two kinds of situations; described electronic component is the same with light emitting diode can not to be exposed outside; if according to existing design; when being placed on these electronic components on the liquid crystal drive flexible print circuit board 41,, attach one deck dielectric film also can for usually these electronic components in order to prevent short circuit; and adopt the technical solution of the utility model just need on the liquid crystal drive flexible print circuit board, not paste one deck dielectric film more in addition, reduced production cost.
Needs according to the driving circuit periphery design, described electronic component mainly comprises resistance, electric capacity and diode etc., certainly those skilled in the art are on the basis of understanding the aforementioned techniques scheme, the electronic component of other type (for example triode etc.) can also be placed on the flexible print circuit board backlight.
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.