TWI403046B - Method for manufacturing dimmable thin film electrodes - Google Patents

Description

Dimming film electrode manufacturing method

The invention provides a method for manufacturing a dimming film electrode, in particular, a conductive paste and a mesh conductor are sequentially arranged on the electric film, and then the conductive paste is solidified by a heating furnace to firmly bond the conductive film and the mesh conductor, and then adjusted. The mesh-shaped conductive outer surface of the outer surface of the light film is welded to the conductive wire, which not only allows the solder to sink into the mesh conductor to form a stable bond, but also allows the high temperature of the solder to directly affect the liquid crystal layer and the conductive film.

According to the early method, in order to make the door and window or compartment glass concealed, and to install the curtains, Low-E glass or heat-insulating paper outside the glass in order to isolate the sunlight, take insulation paper as an example. Insulation paper is colored. When it is attached to transparent glass, it can get the effect of line-of-sight shielding. However, it can only reduce the glare of sunlight, but it can not effectively block the ravage of ultraviolet rays. It is also unsatisfactory for heat insulation. Occasionally, the problem of oxidation, color unevenness, fading, blistering, wrinkles and deformation is less than half a year, and if the color of the heat-insulating paper used is too deep, the heat-insulating paper is pasted in the decorative compartment glass. Although the glass curtain on the exterior wall of the building and the glass of the building have the effect of intimacy and heat insulation, in the cloudy and rainy days, the glass is also poorly transmitted due to the heat insulation paper. If this is used indoors, If you use this in automotive glass, it will cause poor line of sight. In addition, by using colored glass and pasting insulation paper, the transparency of the glass cannot be changed arbitrarily, and the method of installing curtains is adopted. also Cumbersome to install and can only be installed in the window to the door, and occupies building space, clean up later troublesome.

In recent years, a type of dimming glass (Polyvision Privacy Glass) has been produced which can change the transmittance of glass by changing the current to achieve the effect of randomly changing the transparency of the glass. The structure is a kind of glued glass, which is bonded by a liquid crystal film. A conductive film is disposed between the two glass sheets and the bonding surface between the two glass sheets and the liquid crystal film, and the power is connected by the two conductive films, wherein the liquid crystal film is a polymer dispersed liquid crystal (Polymer dispersed liquid crystal). It is a liquid crystal film based on the "light valve" characteristic of a liquid crystal material. The liquid crystal light valve characteristic means that when the liquid crystal film is in a natural state (the electric field is not applied with an electric field), the arrangement of the liquid crystal inside is irregular, and the liquid crystal is The refractive index is lower than the refractive index of the outer polymer, and the incident light is scattered on the polymer to produce a milky white "glazed glass" effect. When the liquid crystal film is applied with an electric field (energized), the interior thereof is randomly dispersed. The liquid crystals are arranged in order, so that the refractive index of the liquid crystal is equal to the refractive index of the polymer, and the incident light is completely transmitted, so that the liquid crystal film is in a transparent state.

However, since the above-mentioned dimming glass needs to change the transparency of the glass by current, it is necessary to connect electrodes for external power transmission. Generally, the manufacturer cuts the two sides of the dimming glass from the top and the bottom by cutting. The single-layer glass and the conductive film are cut off, and then the copper foil contact and the side wall surface of the conductive film cutting surface are adhered through the adhesive material, and the copper foil contact is re-welded with a conductive wire; since the conductive wire is directly welded to the copper foil connection At the point, the solder will generate high temperature (about 250 ° C ~ 500 ° C), because the solder point is directly on the conductive film, its high temperature will be transmitted to the liquid crystal film, so that the controllability and display effect of the liquid crystal film is worse, and The copper foil contact is flat and the texture is hard, which not only causes unevenness, but also makes the copper foil contact not surely adhere to the conductive film, and the gap will affect the electrical contact, and the copper foil will be allowed. The contact is prone to the problem of falling off.

In summary, the above-mentioned shortcomings of the use of the latter are the subject of the desire of the industry to be improved, and it is necessary for the relevant industry to further improve and redesign.

Therefore, in view of the above-mentioned deficiencies, the inventors have collected relevant information, and through multi-party evaluation and consideration, and through years of experience in the industry, through continuous trial and modification, we have designed such a fixed and good conductivity. The invention patent of the method for manufacturing a dimming film electrode with controllability and display effect.

The main purpose of the present invention is to apply a conductive adhesive on the surface of the conductive film, and then provide a mesh-shaped electrical conductor on the conductive film and then pass through a heating furnace, so that the conductive adhesive can be cured and adhered to the side through the mesh structure of the mesh-shaped conductive body. And above, the adhesion can be enhanced, and the mesh conductor and the conductive film can be firmly combined, and the mesh conductor can not be easily detached when subjected to an external force.

A secondary object of the present invention is to form a solder joint to form a solder joint to extend the surface of the exposed portion of the outer surface of the light-adjusting film to form a solder joint, and the exposed portion receives the high temperature and then conducts the mesh to the light-adjusting film. After the conductor, the temperature will be lowered without affecting the liquid crystal layer and the conductive film, and the solder will sink into the mesh structure of the mesh conductor, thereby increasing the conductive area and improving the adhesion after the conductive wire is welded. Sex and strength, effectively let the voltage and current are evenly transmitted to the conductive film through the mesh conductor, and can avoid the influence of high temperature on the liquid crystal layer, thereby achieving the purpose of improving reaction, efficiency, controllability and display effect.

Another object of the present invention is to provide a plurality of insulating protective films on both sides of the mesh conductor, so that the mesh conductors, the solder joints and the outer side of the conductive wires are covered by the insulating protective film to block the air, thereby preventing the conductive adhesive. And the mesh conductor is in contact with the air to generate oxidation, so that the conductive paste and the mesh conductor have good electrical conductivity and prevent oxidation and short circuit.

In order to achieve the above objects and effects, the technical means and the configuration of the present invention will be described in detail with reference to the preferred embodiments of the present invention.

Referring to the first embodiment, which is a side view of a preferred embodiment of the present invention, it can be clearly seen from the figure, which includes a light-adjusting film 1, a conductive adhesive 2 and an electrode module 3, wherein: the dimming The film 1 is composed of a light-adjusting liquid crystal layer 11 and a pressure sensitive adhesive 12 (PSA) on both sides thereof, and the light-adjusting liquid crystal layer 11 is provided with a polymer viscous polymer and a nematic series liquid crystal. The liquid crystal layer 111, the polymer adhesive polymer may be a polyisocyanate crosslinked hydroxyl group, a hydroxy polyacrylate or an acrylic resin, and a conductive film 112 is respectively disposed on both sides of the liquid crystal layer 111, and the conductive film 112 may be When a layer of indium tin oxide (ITO) is sputtered on the polyethylene terephthalate, the outer surface of the second conductive film 112 is respectively provided with a pressure sensitive adhesive 12, and the two ends of the light control film 1 are respectively The upper and lower sides are removed by a single-layer pressure sensitive adhesive 12, a conductive film 112, and a liquid crystal layer 111 to form a connection groove 13.

The conductive paste 2 is disposed on the surface of the conductive film 112 on the inner side of the connecting groove 13 of the light-adjusting film 1. The conductive paste 2 can be made of silver (Ag), gold (Au) or other metal having good conductivity.

The electrode module 3 has a mesh conductor 31 disposed on the conductive paste 2, and the mesh conductor 31 can be made of copper, silver or a conductive metal material, and the outer side of the mesh conductor 31 is extended and exposed. The external exposed portion 311 of the light-adjusting film 1 is disposed, and the exposed portion 311 is disposed on the other side surface of the conductive paste 2 with a conductive line 32. The conductive line 32 can be made of copper, silver or a conductive metal material, and the conductive line 32 is soldered. The method is connected to the surface of the exposed portion 311 to form a solder joint 33 of zinc and tin material, and then the mesh conductor 31 is provided with a cover surface of the mesh conductor 31 for the opposite side surface of the positive conductive paste 2, the conductive line 32, and the solder joint. 33 and the mesh-shaped conductor 31 adjacent to the surface of the conductive paste 2 of the plurality of insulating protective films 34, the insulating protective film 34 is a polyethylene terephthalate (Poly ethlene Terephthalate, PET) material made of a release film.

Please refer to the first, second, third, fourth, fifth, sixth and seventh figures, which are side views of the preferred embodiment of the invention, a side view of the dimming film before cutting, a side view after the dimming film is cut, A side view after coating the conductive paste, a side view after the provision of the mesh conductor, a side view after soldering the conductive wire, and a flow chart of the steps of the preferred embodiment, as is clear from the figure, the present invention is in the The flow of steps when the dimming film 1 is used for electrode manufacturing includes:

(400) The light-adjusting film 1 is cut from the upper and lower surfaces on both sides, and the single-layer pressure sensitive adhesive 12, the conductive film 112, and the liquid crystal layer 111 are sequentially removed from the outside to the inside to form the connection groove 13.

(401) The connecting groove 13 is coated with a conductive paste 2 on the surface of the conductive film 112 which is not cut inside.

(402) The mesh-shaped conductor 31 of the electrode module 3 is disposed on the conductive paste 2, and the exposed portion 311 on the side of the mesh-shaped conductor 31 protrudes to the outside of the light-adjusting film 1.

(403) The overheating furnace cures the conductive paste 2 and bonds the mesh conductor 31 to the conductive film 112.

(404) The exposed portion 311 of the mesh-shaped conductor 31 is formed by soldering on the surface to form the solder joint 33 to connect the conductive line 32.

(405) The mesh-shaped conductor 31 is provided with an insulating protective film 34 on the other side surface of the conductive paste 2, so that the insulating protective film 34 covers the solder joint 33 and the conductive line 32.

The mesh-shaped electrical conductors 31 are placed on the conductive adhesive 2, and the conductive adhesive 2 is adhered to the side and the upper side through a mesh structure (not shown) of the mesh-shaped electrical conductors 31, and then passed through a heating furnace to make the conductive adhesive 2 After curing, the molecules of the conductive adhesive 2 can be effectively and surely combined with the mesh conductor 31 to form a positioning, thereby enhancing the adhesion, and the mesh conductor 31 and the conductive film 112 are firmly combined; The conductive body 31 is not in contact with the liquid crystal layer 111, and the conductive wire 32 is soldered to the mesh-shaped electrical conductor 31 and protrudes to the external exposed portion 311 of the light-adjusting film 1. When soldering is formed to form the solder joint 33, the solder joint 33 is located. The position generates a high temperature (about 250 ° C ~ 500 ° C), after the exposed portion 311 receives the high temperature and then conducts to the mesh-shaped conductor 31 on the light-adjusting film 1, the temperature thereof is lowered without affecting the liquid crystal layer 111 and the conductive film 112. Further, the controllability and display effect of the liquid crystal layer 111 can be improved. Further, when the solder forms the solder joint 33, the solder sinks into the mesh structure of the mesh conductor 31, and the mesh structure can increase the area in contact with the solder. , not only can increase the conductive area, but also because the solder can be attached to the side of the grid structure The coating is formed on the side or the lower side, and the adhesion and strength of the conductive wire 32 after welding are also improved.

In addition, the two sides of the mesh-shaped conductor 31 are provided with a plurality of insulating protective films 34, and the mesh-shaped conductors 31 are provided with an insulating protective film 34 for the positive conductive paste 2 on the other side of the conductive paste 2, and a dimming film. After being transported to the site and the conductive wire 32 is soldered to form the solder joint 33, the insulating protective film 34 is respectively disposed on both sides of the mesh conductor 31 outside the conductive adhesive 2, so that the insulating protective film 34 covers the solder joint 33 and The conductive wire 32 can prevent the air from directly contacting the conductive adhesive 2 and the mesh-shaped electrical conductor 31, so that the conductive adhesive 2 and the mesh-shaped electrical conductor 31 are not oxidized, and the conductive adhesive 2 and the mesh-shaped electrical conductor 31 can have good electrical conductivity. Sex, it can avoid oxidation and short circuit.

The above-described method for manufacturing a light-adjusting film electrode of the present invention has the following advantages in practical use, such as:

(1) After the two sides of the light-adjusting film 1 are cut, the connecting groove 13 is formed. After the conductive groove 2 is coated on the surface of the conductive film 112 on the inner side, the mesh-shaped conductive body 31 is disposed, because the conductive adhesive 2 passes through the mesh-shaped conductive body 31. The mesh structure is attached to the side and the upper side, and after the conductive adhesive 2 is cured by the heating furnace, the molecules of the conductive adhesive 2 can be effectively and surely combined with the mesh-shaped electrical conductor 31 to form a positioning, thereby enhancing the adhesion. The mesh conductor 31 is firmly bonded to the conductive film 112.

(2) When the exposed portion 311 of the mesh-shaped conductor 31 protrudes to the outside of the light-adjusting film 1, and the surface of the exposed portion 311 is formed by soldering to form the solder joint 33, the high-temperature of the solder is transmitted to The liquid crystal layer 111 and the conductive film 112 have been cooled, so that the high temperature influences the liquid crystal layer 111 and the conductive film 112, and the liquid crystal layer 111 can have good controllability and display effect, and the solder sinks into the mesh conductor during soldering. Within the grid structure of 31, the conductive area can be increased, the adhesion and strength after soldering can be improved, and the voltage and current can be effectively conducted to the conductive film through the mesh conductor.

(3) The two side surfaces of the mesh-shaped conductor 31 are provided with a plurality of insulating protective films 34, so that the insulating protective film 34 covers the conductive wires 32, the solder joints 33, and the other surfaces of the mesh-shaped conductors 31 that are not in contact with the conductive paste 2. The conductive paste 2 and the mesh conductor 31 can be insulated from the air through the insulating protective film 34, so that the conductive paste 2 and the mesh conductor 31 can have good electrical conductivity, and can avoid oxidation and short circuit.

Therefore, the present invention is mainly directed to a method for manufacturing a dimming film electrode, and the upper and lower surfaces of the dimming film 1 can be sequentially cut out of the single layer of the pressure sensitive adhesive 12, the conductive film 112, and the liquid crystal layer 111, and the conductive layer is exposed. The conductive adhesive 2 and the mesh conductor 31 of the electrode module 3 are sequentially disposed on the film 112, and then the conductive adhesive 2 is solidified and solidified by the mesh conductor 31 through a heating furnace, and the mesh conductor 31 is located outside the light control film 1. The exposed portion 311 is soldered to the conductive line 32, so that the solder can be dampened into the mesh-shaped conductor 31 to form a stable bond with the conductive film 112, and the high temperature of the soldering does not directly affect the liquid crystal layer 111 and the conductive film 112, and is effective. The voltage and current are uniformly conducted to the conductive film through the mesh conductor, and the reaction and efficiency of the light-adjusting film are emphasized as the main protection points. However, the above description is only a preferred embodiment of the present invention, and thus is not limited. The invention is to be construed as being limited to the scope of the present invention and the equivalents and modifications thereof.

In summary, the method for manufacturing the above-mentioned dimming film electrode of the present invention can achieve its efficacy and purpose during implementation and operation. Therefore, the present invention is an invention with excellent practicability, and is an application for conforming to the invention patent.提出 Submit an application in accordance with the law, and hope that the trial committee will grant this case as soon as possible to protect the hard work of the inventor. If there is any doubt in the audit committee, please do not hesitate to give instructions to the inventor to make every effort to cooperate.

1‧‧‧Dimming film

11‧‧‧Dimming liquid crystal layer

111‧‧‧Liquid layer

112‧‧‧Electrical film

2‧‧‧Conductive adhesive

12‧‧‧ Pressure sensitive adhesive

13‧‧‧Connection slot

3‧‧‧Electrode module

31‧‧‧ mesh conductor

311‧‧‧Exposed Department

32‧‧‧Flexible wire

33‧‧‧ solder joints

34‧‧‧Insulation protective film

The first figure is a side view of a preferred embodiment of the invention.

The second figure is a side view of the dimming film of the present invention before cutting.

The third figure is a side view of the dimming film of the present invention after cutting.

The fourth figure is a side view of the present invention after coating the conductive paste.

The fifth drawing is a side view of the present invention after the mesh conductor is provided.

The sixth drawing is a side view of the present invention after welding and coating the conductive wire.

Figure 7 is a flow chart showing the steps of a preferred embodiment of the present invention.

1. . . Dimming film

11. . . Dimming liquid crystal layer

111. . . Liquid crystal layer

112. . . Conductive film

12. . . Pressure sensitive adhesive

13. . . Connection slot

2. . . Conductive plastic

3. . . Electrode module

31. . . Mesh conductor

311. . . Exposed department

32. . . Conductive wire

33. . . Solder joint

34. . . Insulating protective film

Claims (9)

The invention relates to a method for manufacturing a dimming film electrode, in particular to a method for manufacturing an electrode on a light-adjusting film, wherein the light-adjusting film is provided with a light-adjusting liquid crystal layer, and the light-adjusting liquid crystal layer is respectively provided with conductive materials on two sides of the liquid crystal layer. The film is provided with a pressure sensitive adhesive (PSA) on the outer side of the liquid crystal layer, and the manufacturing process includes: (A) the light-adjusting film is cut from the upper and lower surfaces on both sides, The single layer of pressure sensitive adhesive, conductive film and liquid crystal layer are sequentially removed from the outer side to form a connecting groove, and the liquid crystal layer of the light adjusting liquid crystal layer is mixed with the polymer type polymer and the nematic series liquid crystal; (B) connection The surface of the conductive film on the inner side of the groove is coated with a conductive adhesive; (C) the mesh-shaped electric conductor of the electrode module is disposed on the conductive adhesive, and the exposed portion of the mesh-shaped conductive body protrudes to the outside of the light-adjusting film; (D) The heating furnace cures the conductive adhesive, so that the conductive adhesive combines the mesh conductor and the conductive film reliably and effectively; (E) the mesh conductor is not conducted to the liquid crystal layer and the exposed surface of the conductive film at a high temperature to connect the conductive line. And the conductive wire is welded by welding Mesh conductor connecting to the solder pads of the sinking of the mesh conductor cell structure. The method for manufacturing a light-adjusting film electrode according to claim 1, wherein the polymer-adhesive polymer of the light-adjusting liquid crystal layer is a polyisocyanate-crosslinked hydroxy group. a group, a hydroxy polyacrylate or an acrylic resin. The method for manufacturing a dimming film electrode according to claim 1, wherein the conductive film is a polyethylene terephthalate sputtered with an indium tin oxide (ITO). The method for manufacturing a dimming film electrode according to the first aspect of the invention, wherein after the conductive adhesive is combined with the mesh conductor and the conductive film, the positive conductive paste is first disposed on the other side surface of the conductive conductor opposite to the conductive adhesive. The insulating protective film is welded to the exposed portion of the mesh conductor to form a solder joint, and then the cover is covered on the two sides of the mesh conductor on the outer side of the conductive adhesive to cover the solder joint and the conductive wire and to isolate the air. Insulation protective film. The method for manufacturing a dimming film electrode according to claim 1, wherein the conductive paste is made of silver (Ag), gold (Au) or a metal having good conductivity. The method for manufacturing a dimming film electrode according to claim 1, wherein the mesh conductor can be made of copper, silver or a conductive metal material. The method for manufacturing a dimming film electrode according to claim 1, wherein the conductive wire is made of copper, silver or a conductive metal material. The method for manufacturing a dimming film electrode according to claim 1, wherein the solder joint is made of zinc or tin. The method for manufacturing a dimmable film electrode according to claim 4, wherein the insulating protective film is polyethylene terephthalate (Polyethlene Terephthalate, PET) made of a film that is made of a material.