CN205755044U - A kind of FPC plate for LCD liquid crystal display screen - Google Patents

Abstract

The utility model discloses a kind of FPC plate for LCD liquid crystal display screen; including substrate layer, protecting film layer and copper foil layer; described FPC plate includes first substrate layer; the both sides of described first substrate layer are provided with the first copper foil layer and the second copper foil layer, and the opposite side of described first copper foil layer is provided with the first protecting film layer and the first solder mask layer；The opposite side of described second copper foil layer is provided with the second protecting film layer and the second solder mask layer.

Description

A kind of FPC plate for LCD liquid crystal display screen

Technical field

This utility model relates to a kind of flex circuit application and manufactures and designs field, and in particular, it relates to a kind of FPC plate.

Background technology

Flexible printed circuit board FPC (Flexible Printed Circuit Board) is by flexible insulating substrate system The printed circuit become, has the advantage that many rigid printed circuit boards do not possess.Such as it can with free bend, wind, fold, Can require arbitrarily to arrange according to space layout, and arbitrarily move at three dimensions and stretch, thus reach components and parts assembling and lead The integration that line connects.Utilize FPC can be substantially reduced the volume of electronic product, be suitable for electronic product to high density, miniaturization, height The needs of reliable direction development.Therefore, FPC is in space flight, military affairs, mobile communication, laptop computer, computer peripheral equipment, PDA, numeral It is widely used on the fields such as camera or product.FPC Flexible Printed Circuit flexible electric circuit board Also known as flexible circuit board；With mylar or polyimides as base material, by being etched on Copper Foil formation circuit, excellent flexure The printed circuit of property.

But during practical set, FPC plate is the thinnest, not rounded degree of the slipping over position on FPC plate is susceptible to tear Phenomenon, affects the quality of FPC plate, and the FPC plate of current LCD liquid crystal display screen not only needs good bending, and needs Produce internal force during reducing bending and have more preferable 3 D stereo assembling space；Simultaneously in order to meet existing market demand, multilamellar FPC circuit high-density wiring to be possessed and high-density raw device high density distribution prototype part assemble, and must possess simultaneously The performances such as FPC soft board is lightweight, thickness is thin, volume is little, dynamic bending.

Utility model content

In view of this, the purpose of this utility model is to provide a kind of good curved for having of LCD liquid crystal display screen Folding endurance and better meet the FPC plate of the market demand.

Concrete, this utility model provides following technical scheme:

A kind of FPC plate for LCD liquid crystal display screen, including substrate layer, protecting film layer and copper foil layer, described FPC plate Including first substrate layer, the both sides of described first substrate layer are provided with the first copper foil layer and the second copper foil layer, described first copper foil layer Opposite side be provided with the first protecting film layer and the first solder mask layer；The opposite side of described second copper foil layer is provided with the second protecting film Layer and the second solder mask layer.

Preferably, the first protecting film layer and the second protecting film layer are provided with antistatic backing in the side near Copper Foil.

Preferably, it is provided with high-temperature-resistant layer between antistatic backing and protecting film layer.

Preferably, antistatic backing includes that the conductive nano white carbon black being coated on the first protecting film layer and the second protecting film layer is prevented Electrostatic PTFE coating.

Preferably, high-temperature-resistant layer includes PI-EP nanometer composite layer.

Preferably, by bonding between the first copper foil layer and the second copper foil layer and the first protecting film layer and the second protecting film layer Layer is fixing to be connected, and connects by adhesive linkage is fixing between described first substrate layer and the first copper foil layer and the second copper foil layer.

Preferably, adhesive linkage includes transparent adhesive tape.

Compared with prior art, a kind of FPC plate for LCD liquid crystal display screen that this utility model provides, have following Beneficial effect:

1) the FPC plate that this utility model provides, by using solder mask to protect in the outside in bending region, reduces The internal stress produced in assembling process, makes bending part disclosure satisfy that highly dense dynamic bending performance, makes properties of product more may be used simultaneously By more stable, thus there is more preferable 3 D stereo assembling space.

2) the FPC plate structure that this utility model provides is simple, easy to make and low cost.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of FPC plate for LCD liquid crystal display screen of this utility model embodiment.

In accompanying drawing, the labelling of each parts is as follows:

11-first substrate layer；21-the first copper foil layer；22-the second copper foil layer；31-the first protecting film layer；32-second protects Film layer；41-the first solder mask layer；42-the second solder mask layer.

Detailed description of the invention

For making the purpose of this utility model embodiment, technical scheme and advantage clearer, new below in conjunction with this practicality Accompanying drawing in type embodiment, is clearly and completely described the technical scheme in this utility model embodiment, it is clear that retouched The embodiment stated is a part of embodiment of this utility model rather than whole embodiments.Generally described in the accompanying drawing herein and The assembly of this utility model embodiment illustrated can be arranged with various different configurations and design.Therefore, below to attached The detailed description of the embodiment of the present utility model provided in figure is not intended to limit claimed scope of the present utility model, But it is merely representative of selected embodiment of the present utility model.Based on the embodiment in this utility model, ordinary skill people The every other embodiment that member is obtained under not making creative work premise, broadly falls into the model of this utility model protection Enclose.

In description of the present utility model, it should be noted that term " on ", D score, "left", "right", " interior ", " outward " etc. Orientation or the position relationship of instruction are based on orientation shown in the drawings or position relationship, are for only for ease of description this utility model Describe rather than indicate or imply that the device of indication or element must have specific orientation, with specific orientation structure with simplifying Make and operate, therefore it is not intended that to restriction of the present utility model.

In description of the present utility model, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " sets Put " should be interpreted broadly, for the ordinary skill in the art, can understand that above-mentioned term is at this as the case may be Concrete meaning in utility model.

Embodiment

Fig. 1 is the structural representation of a kind of FPC plate for LCD liquid crystal display screen of this utility model embodiment, FPC plate Including first substrate layer 11, the both sides of first substrate layer 11 are provided with the first copper foil layer 21 and the second copper foil layer 22, the first copper foil layer The opposite side of 21 is provided with the first protecting film layer 31 and the first solder mask layer 41；The opposite side of the second copper foil layer 22 is provided with the second guarantor Cuticular layer 32 and the second solder mask layer 42；

The FCP plate of LCD liquid crystal display screen is big because of the protecting film layer thickness of general line protection, internal stress ambassador during bending Bounce increases, and makes the performance of FCP plate be greatly reduced, and in order to meet the bending performance of LCD liquid crystal display screen, the present embodiment uses The general protecting film layer of protection circuit and the compound mode of solder mask layer, reduce the internal stress produced in assembling process, from And make LCD liquid crystal display screen have more preferable 3 D stereo assembling space；

The protection circuit protecting film of the first protecting film layer 31 and the second protecting film layer 32 have employed polyimides (Polyimide is called for short PI) or polyester (Polyerster is called for short PET)；First solder mask layer 41 and the second solder mask Layer 42 also acts aesthetic appeal, insulation and anti-oxidation effect.

By viscous between first copper foil layer 21 and the second copper foil layer 22 and the first protecting film layer 31 and the second protecting film layer 32 Connect the fixing connection of layer, be connected by adhesive linkage is fixing between first substrate layer 11 with the first copper foil layer 21 and the second copper foil layer 22, Adhesive linkage includes transparent adhesive tape.

In certain embodiments, optionally, be provided with antistatic backing at protecting film layer near the side of Copper Foil, antistatic backing with And it is provided with high-temperature-resistant layer between protecting film layer；

Antistatic backing includes the conductive nano white carbon black antistatic PTFE coating being coated on protecting film, conductive black antistatic The thickness of PTFE coating is 15 μm, has preferable anti-static effect.

The thickness of the first protecting film layer 31 and the second protecting film layer 32 is 13 μm～25 μm.

The thickness of first substrate layer 11 is 13 μm～50 μm.

High-temperature-resistant layer include PI-EP nanometer composite layer, PI-EP nanometer composite layer be currently known there is preferable resistance to height The tender material of warm nature, in " preparation of PI-EP nano composite material and the performance study " of Yue Wei to its preparation method and in detail Performance has elaborated, and does not repeats them here.

The thickness of PI-EP nanometer composite layer is 15 μm.

The FPC plate that this utility model provides, in LCD liquid crystal display screen, hinders by using in the outside in bending region Solder paste ink protects, and reduces the internal stress produced in assembling process, thus has more preferable 3 D stereo assembling space.

These are only this utility model preferred embodiment, be not used to limit to this utility model, all of the present utility model Amendment, equivalent and the improvement etc. made within spirit and principle, be required to be included in protection domain of the present utility model it In.

Claims (7)

1. for a FPC plate for LCD liquid crystal display screen, including substrate layer, protecting film layer and copper foil layer, it is characterised in that Described FPC plate includes that first substrate layer, the both sides of described first substrate layer are provided with the first copper foil layer and the second copper foil layer, described The opposite side of one copper foil layer is provided with the first protecting film layer and the first solder mask layer；The opposite side of described second copper foil layer is provided with Two protecting film layers and the second solder mask layer.

FPC plate the most according to claim 1, it is characterised in that described first protecting film layer and the second protecting film layer are leaning on The side of nearly Copper Foil is provided with antistatic backing.

FPC plate the most according to claim 2, it is characterised in that set between described antistatic backing and protecting film layer There is high-temperature-resistant layer.

FPC plate the most according to claim 2, it is characterised in that described antistatic backing includes being coated in the first protecting film layer With the conductive nano white carbon black antistatic PTFE coating on the second protecting film layer.

FPC plate the most according to claim 3, it is characterised in that described high-temperature-resistant layer includes PI-EP nanometer composite layer.

FPC plate the most according to claim 1, it is characterised in that described first copper foil layer and the second copper foil layer and first are protected Connect by adhesive linkage is fixing between cuticular layer and the second protecting film layer, described first substrate layer and the first copper foil layer and the second bronze medal Connect by adhesive linkage is fixing between layers of foil.

FPC plate the most according to claim 6, it is characterised in that described adhesive linkage includes transparent adhesive tape.