CN208721942U - Metal foil electrode for flexible liquid crystal box light valve - Google Patents

Abstract

A kind of metal foil electrode for flexible liquid crystal box light valve.Provide designed from selection to relevant structure, the line items such as technique.It is compareed with the electrode made of flexible print circuit board, metal foil electrode has the advantages that various aspects: the manufacturer of flexible liquid crystal box light valve is expected to improve production quality with this and material-saving, saving of labor, saving management cost, these advantages are embodied on the product of various sizes；For flexible liquid crystal box light valve is using producer, non-weldering mode is selected when flexible liquid crystal box light valve and control circuit are electrically connected, can not only reduce electrode size, the installation space of glasses class product is saved, facilitates Design modelling；And convenient for automation, intelligent production.

Description

Metal foil electrode for flexible liquid crystal box light valve

Technical field

This patent is related to a kind of electrode being electrically connected for flexible base board liquid crystal cell and driving circuit, in particular to and one Kind is used for the metal foil electrode of flexible base board liquid crystal cell light valve.

Background technique

The electrooptics liquid crystal cell that the variation of its luminous transmittance is controlled with electric signal, arrives greatly electrically-controlled liquid crystal color-changing window glass for building Glass, the small scope that liquid crystal light valve is belonged to Electrocontrolled color change liquid crystal glasses piece.The basic structure of liquid crystal light valve is two transparent It is coated with the substrate of ITO nesa coating on substrate, is bonded to liquid crystal cell with sealant, the stacking knot of liquid crystal thin layer is filled in box Structure does oriented layer, bilevel substrate, two layers of transparent conductive film, one layer of liquid crystal although some substrate outer patch polaroids in substrate This five layers are essential.All use the glass for being coated with ITO nesa coating as base plate for liquid crystal cell twenty years ago, with science and technology The transparent plastic sheet that ITO transparent conductive film occurs being coated in progress is made that dyeing liquor as base plate for liquid crystal cell, and with it successively Brilliant light valve and TN type liquid crystal light valve.The transparent plastic sheet for being coated with ITO nesa coating is used to be referred to collectively as base plate for liquid crystal cell For flexible liquid crystal, also someone is called flexible liquid crystal.It is used to be attached with driving circuit on flexible liquid crystal box light valve in the past Electrode all use two layers of copper foil to press from both sides the flexible print circuit board of one layer of insulant, three-decker altogether, also someone is with flexible print The electrode of brush wiring board production is known as " tab ".It is with conduction between flexible print circuit board electrode and ITO nesa coating What glue connected in making, the outer connection between flexible print circuit board electrode and driving circuit has then followed band folder on glass liquid crystal cell The soldering connection method of mouth contact pin.

Since new technology continues to bring out, to reduce cost, there are many methods of production transparent conductive film to lead with transparent Electrolemma coexists.As CdSnO₃It is coated on the material for making base plate for liquid crystal cell on overlay with evaporation or sputtering technology, uses Method is identical as the substrate of ITO nesa coating is applied；Graphene slurry, nano silver slurry are coated on serigraphy process transparent Make the transparent conductive film of base plate for liquid crystal cell on plastic foil, the small light valve usage of size is identical as the substrate for being coated with ito film, and size is big Light valve then directly make figure with silk process, more complex photoetching process can be saved.

It is naturally that flexible liquid crystal box light valve is imperfect as new things.The flexible print circuit board electrode that it is used There is disadvantage: the flexible print circuit board electrode of three-decker seems very thin, but thick compared with the liquid crystal layer in light valve Degree or big many.The two is clipped between the two-layer substrate of flexible liquid crystal box jointly and necessarily forms noticeable steps, gives production envelope Frame glue brings inconvenience, and the flaws such as leakage, bubble easily occurs, becomes defective products.Using when due to the liquid on electrode side than normal area Crystal layer thickness is big, and in the case where adding unified voltage, electric field strength will be low on electrode side, and light shielding ability will be insufficient, shows as Light leakage flaw.If the penstock of whose family, which weeping occurs all, can think that it is broken, to hasten to update.It is as light valve similarly It is not allow for light leak spot, even bulk glass pane, light leak spot occurs and is also repugnant to the eye.

Since liquid crystal factory will be ordered using flexible print circuit board electrode from printed wiring board factory, wanted for liquid crystal factory Increase material cost and management cost.

Flexible liquid crystal box light valve needs to be brazed after delivering user, common because fuel factor causes between electrode and transparent conductive film Degumming is scrapped；The drawbacks of to overcome because of hot degumming, mostly lengthens the size of this two electrode, to glasses class product, not only in design Increase weight and interfere beauty, this is all again that eyewear products to be avoided；It is assembled using soldering processes, it is more difficult to realize certainly Dynamicization, it is difficult to reduce the processing cost of user.

Summary of the invention

A kind of metal foil electrode for flexible liquid crystal box light valve, it is characterised in that the electrode is made of metal foil Small pieces；Above-mentioned metal foil electrode is attached in the transparent conductive film of flexible liquid crystal box front-back baseboard for two respectively with conducting resinl, Electrical connection inside realizing；The opposing substrate corresponding region of metal-foil-clad electrode base board does not allow there are transparent conductive film, with The transparent conductive film of anti-two substrates is by metal foil electrode short circuit；Sealant pastes metal foil electrode in portion on nesa coating Point and periphery all standing, will not be leaked from metal foil electrode with protecting liquid crystal.Manufactured flexible liquid crystal box light valve is electric with driving When road is electrically connected, metal foil electrode need to only be passed through the printed wire for being coated with pressure-sensing conducting resin and control circuit on it Plate output end is pasted.

The metal foil electrode for flexible liquid crystal box light valve that this patent provides, makes relative to of flexible print circuit board Electrode, have the advantage that

In terms of flexible liquid crystal box light valve manufacturer, material cost is reduced；It is not required to order flexible print circuit board, reduce Management cost；It replaces flexible print circuit board to reduce electrode material thickness with metal foil, reduces electrode and liquid crystal thickness It is poor to spend, and the technique for facilitating printing sealant helps to improve production qualification rate.From the point of view of flexible liquid crystal box light valve user, band First benefit of metal foil electrode bring of pressure-sensing conducting resin can be led using pressure-sensitive when being electrically connected with driving circuit Electric glue method, can remove hot-working soldering processes from, so as to avoid loss due to spoiled work caused by fuel factor；Second benefit be It avoids under the background that fuel factor causes loss due to spoiled work, the size of metal foil electrode can be shortened, not only save electrode material, it is heavier What is wanted is the structure and Design modelling for facilitating product；Third benefit is to be brazed this hot-working due to removing from, is convenient for assembler Skill automation, to realize that intelligence manufacture is laid a good foundation.

The content of this patent is only limitted to the improvement of flexible liquid crystal box light valve electrode, is not related to the work of flexible liquid crystal box light valve Principle and driving method.

Detailed description of the invention

Fig. 1 is the discrete glasses chip flexible liquid crystal box light valve left eye piece finished product schematic in left and right.

Fig. 2 is the remote face flexible liquid crystal box substrate profile of wearer and the ito film photoetching schematic diagram that shadow region indicates.

Fig. 3 is the nearly face flexible liquid crystal box substrate profile of wearer and the ito film photoetching schematic diagram that shadow region indicates.

Fig. 4 is the schematic diagram that ito film is bonded on metal foil electrode A face flexible liquid crystal box substrate remote with wearer.

Fig. 5 is the schematic diagram that ito film is bonded on metal foil electrode B face flexible liquid crystal box substrate close with wearer.

Fig. 6 is sealant screen printing pictorial diagram.

Fig. 7 is that flexible liquid crystal box light valve finished product disassembles schematic diagram.

Fig. 8 is the finished product schematic that the discrete glasses chip flexible liquid crystal box light valve in left and right changes one of electrode lay-out.

Fig. 9 is two finished product schematic that the discrete glasses chip flexible liquid crystal box light valve in left and right changes electrode lay-out.

Figure 10 is left and right conjoined glasses chip flexible liquid crystal box light valve finished product schematic.

Figure 11 is the finished product schematic that left and right conjoined glasses chip flexible liquid crystal box light valve changes one of electrode lay-out.

Figure 12 is two finished product schematic that left and right conjoined glasses chip flexible liquid crystal box light valve changes electrode lay-out.

Figure 13 is glass pane formula flexible liquid crystal box light valve finished product schematic.

Specific embodiment:

Specific implementation of the patent mode is introduced with reference to the accompanying drawing.

Here it is first described in detail by taking the discrete glasses chip flexible liquid crystal box light valve in left and right as an example coated with pressure-sensing conducting resin Metal foil electrode installation method.When we look over from wearer opposite, referring to attached drawing.Fig. 1 is that the discrete glasses chip in left and right is soft Property liquid crystal cell light valve left eye piece finished product schematic, A is the remote face metal foil electrode of wearer in figure, and B is nearly face metal foil electricity Pole.Fig. 2 is the remote face flexible liquid crystal box substrate profile of wearer and the ito film photoetching schematic diagram that shadow region indicates, is particularly pointed out, Ito film on this figure with nearly face electrode B corresponding position is etched away, and here it is the anti-short circuits that summary of the invention is mentioned to arrange It applies.Fig. 3 is the nearly face flexible liquid crystal box substrate profile of wearer and the ito film photoetching schematic diagram that shadow region indicates, is particularly pointed out, Ito film on this figure with remote face metal foil electrode A corresponding position is etched away.Fig. 4 is metal foil electrode A and wears The schematic diagram that ito film is bonded on the remote face flexible liquid crystal box substrate of person, Fig. 5 are that metal foil electrode B face close with wearer is flexible The schematic diagram that ito film is bonded on base plate for liquid crystal cell.Fig. 6 is sealant screen printing schematic diagram, and the corresponding sealant of Fig. 6 is coated in On the corresponding flexible liquid crystal box substrate of Fig. 4, then the corresponding flexible liquid crystal box substrate of Fig. 5 is stacked to compress thereon and is cemented, then just It is consistent with Fig. 1.Fig. 7 is that flexible liquid crystal box light valve finished product disassembles schematic diagram, can be to the discrete glasses chip flexible hydraulic in left and right from Ben Tu The electrode A of brilliant box light valve and the connection type of remote face substrate and the connection type of electrode B and nearly face substrate, and post gold The opposing substrate corresponding region for belonging to foil electrode substrate does not allow that there are transparent conductive films, sees clearly at a glance.

Fig. 8 and Fig. 9 is also the discrete glasses chip flexible liquid crystal box light valve finished product schematic in left and right, and respective electrode lay-out is all Be with its used in spectacle-frame style it is corresponding.In order to correspond to different money spectacle-frames, electrode lay-out can accordingly do any variation, but With reference to the demonstration of Fig. 1 to Fig. 6, ito film photoetching figure is adjusted accordingly.

Figure 10, Figure 11, Figure 12 are left and right conjoined glasses chip flexible liquid crystal box light valve finished product schematic, respective electrode cloth Office be all with its used in spectacle-frame style it is corresponding.In order to correspond to different money spectacle-frames, electrode lay-out can accordingly do any change Change, but with reference to the demonstration of Fig. 1 to Fig. 6, ito film photoetching figure is adjusted accordingly.

Figure 13 is glass pane formula flexible liquid crystal box light valve finished product schematic.It can be rectangle, it is trapezoidal, round, fan-shaped or Other have both the shape of decoration functions and conformal needs.It is not only used on building, and can be used in vehicle, warship Ship, aircraft, spacecraft, on submariner device.Transparent conductive film on its flexible liquid crystal box substrate may be used also other than ito film Graphene slurry, nano silver slurry are coated on transparent plastic sheet and are made with silk screen print method, eliminates more complex light Carving technology.Referring to figs. 1 to the demonstration of Fig. 6 when production, transparent conducting film figure is adjusted accordingly.Glass pane formula flexible liquid crystal Light valve metal foil electrode used, except can be used by being coated with pressure-sensing conducting resin on it both and on flexible liquid crystal box substrate Transparent conductive film makees internal electrical connection, and pastes the work realized to external electrical connections with the printed wiring board output end of control circuit Except skill, internal electrical connection can also be made along conducting resinl is taken over, method for brazing makees the traditional handicraft of external electrical connections.

The material for implementing metal foil electrode used in this patent, by the market it is common be covered with the copper foil of pressure-sensing conducting resin headed by Choosing, it is also possible to copper alloy foil, nickel foil, nickel alloy foil or other metal foils.

Apply no matter pressure-sensing conducting resin has convenient place, institute in manufacture craft or on using technique in metal foil Using as first choice；But other types conducting resinl still can be used to the implementation of this patent.

The conductive compositions first choice silver powder that uses in conductive adhesive therewith but be not limited to silver powder, nickel powder, copper powder, graphite powder or other Conducting powder, electrocondution slurry can also be used.

Claims (5)

1. a kind of metal foil electrode for flexible liquid crystal box light valve, it is characterised in that the electrode is made of metal foil Small pieces；Two inner ends of above-mentioned metal foil electrode are attached to respectively with conducting resinl the transparent conductive film of flexible liquid crystal box front-back baseboard On, realization is electrically connected with liquid crystal cell inner transparent conductive film；The opposing substrate corresponding region of metal-foil-clad electrode base board is not Allow there are transparent conductive film, it is short-circuit by metal foil electrode to prevent the transparent conductive film of two substrates；Sealant is metal foil electricity Part and periphery all standing on nesa coating are pasted in pole, will not be leaked from metal film electrode with protecting liquid crystal；It is manufactured soft Property liquid crystal cell light valve when being electrically connected with driving circuit, only metal foil electrode outer end need to be passed through coating on it pressure-sensitive Conducting resinl and the printed wiring board output end of control circuit are pasted.

2. being used for the metal foil electrode of flexible liquid crystal box light valve as described in claim 1, it is characterised in that the metal foil Material includes fine copper, copper alloy, pure nickel, nickel alloy.

3. being used for the metal foil electrode of flexible liquid crystal box light valve as described in claim 1, it is characterised in that the conducting resinl Including the pressure-sensing conducting resin containing conducting powder, bi-component electrically conductive glue.

4. being used for the metal foil electrode of flexible liquid crystal box light valve as described in claim 1, it is characterised in that film used includes Ito film, transparent graphene film, transparent nano silverskin.

5. being used for the metal foil electrode of flexible liquid crystal box light valve as described in claim 1, it is characterised in that the metal foil Including two electrodes, arranged side by side, two electrodes are loaded on opposite side, multipair electrode dispersed placement to electrode lay-out respectively.