CN209946861U - Transparent electrode for inhibiting bubble residue during film coating - Google Patents

Abstract

The utility model belongs to the technical field of the transparent electrode and specifically relates to a remaining transparent electrode of suppression bubble during tectorial membrane, include transparent substrate and lay the metal wire on the surface at transparent substrate, the metal wire includes the bottom surface with the contact of transparent substrate, the top surface parallel with the bottom surface and connect the side that bottom surface and top surface formed, its characterized in that: the width of the bottom surface is W1, the width of the top surface is W2, the width of the bottom surface is W1 > W2, the angle formed by the side surface and the bottom surface is alpha, and the alpha is an acute angle. The angle that forms between side and the bottom surface is the acute angle to help driving away the air when pasting the transparent film, effectively restrain the production of bubble, set up the circular arc part at the side, and connect the bottom surface through the circular arc part, can make the top of side and bottom surface contained angle have certain crookedness, be favorable to further reducing the angle of side and bottom surface contained angle, thereby when pressfitting transparent film and rubber coating, can make the air more easily run off, avoid the bubble to remain.

Description

Transparent electrode for inhibiting bubble residue during film coating

Technical Field

The utility model belongs to the technical field of the transparent electrode and specifically relates to a remaining transparent electrode of suppression bubble during tectorial membrane.

Background

Transparent electrodes used in electromagnetic shielding layers of screen display devices, touch panel electrodes, and the like are formed by providing a fine metal mesh structure (lattice or honeycomb) on the surface of a transparent substrate, and the metal mesh structure is fine, so that the overall transparency can be maintained even when the transparent substrate is conductive. The existing forming method of the metal grid electrode forms grids through etching, so that the condition that a conducting film at the corner of the top end of a metal wire is lost and broken is easy to occur, and when a layer of transparent film is coated on the surface of the metal grid electrode, bubbles are left in the transparent film at the position close to the metal grid wire.

SUMMERY OF THE UTILITY MODEL

In order to solve when covering the transparent film for current transparent electrode surface, the inside position that is close to the metal grid line of transparent film has the remaining problem of bubble easily, the utility model provides a remaining transparent electrode of bubble suppression during tectorial membrane is the acute angle through making the contained angle between metal wire side and the bottom surface, the effectual above-mentioned problem of having solved.

A transparent electrode for inhibiting bubble residue in film coating comprises a transparent substrate and metal wires laid on one surface of the transparent substrate, wherein the metal wires comprise a bottom surface in contact with the transparent substrate, a top surface parallel to the bottom surface and a side surface formed by connecting the bottom surface and the top surface, the width of the bottom surface is W1, the width of the top surface is W2, W1 is more than W2, the angle formed by the side surface and the bottom surface is alpha, and the alpha is an acute angle.

Specifically, the side surface includes a straight line portion near the top surface and a circular arc portion near the bottom surface, the side surface is connected to the bottom surface through the circular arc portion, and an angle formed by an extension line of the straight line portion and the bottom surface is α.

Specifically, the angle formed between the side surface and the top surface is a vertex angle, and the vertex angle may be an arc, a multi-segment straight line or a cone.

Specifically, the vertical distance between the bottom surface and the top surface is not more than 10 μm.

Specifically, the above-mentioned angle of 10 ° < α < 80 °.

Specifically, the above-mentioned 10 ° < α < 30 °.

Specifically, the width W1 of the bottom surface is 1-20 μm, and the width W2 of the top surface is 0.5-18 μm.

Specifically, the top width W2 is 0.5 to 7 μm.

Specifically, the surface of the transparent substrate is also provided with a functional layer.

Specifically, the functional layer is a high refractive index layer, a low refractive index layer, a refractive index matching layer, or a hardened layer.

The utility model has the advantages that: the angle that forms between side and the bottom surface is the acute angle to help driving away the air when pasting the transparent film, effectively restrain the production of bubble, set up the circular arc part at the side, and connect the bottom surface through the circular arc part, can make the top of side and bottom surface contained angle have certain crookedness, be favorable to further reducing the angle of side and bottom surface contained angle, thereby when pressfitting transparent film and rubber coating, can make the air more easily run off, avoid the bubble to remain.

Drawings

The bottom surface is further described with reference to the accompanying drawings and examples.

Fig. 1 is a partial perspective view of the present invention.

Fig. 2 is a cross-sectional view along AA in fig. 1.

Fig. 3 is an enlarged view of a portion C in fig. 2.

Fig. 4 is a schematic view of another wire shape.

Fig. 5 is an enlarged view of a portion B in fig. 4.

Fig. 6 is a schematic view of different apex angles.

Fig. 7 is a schematic view of a transparent electrode with a functional layer.

In the figure: a transparent substrate; 11. a functional layer; 2. a metal wire; 21. a bottom surface; 22. a top surface; 23. a side surface; 231. a straight line portion; 232. a circular arc portion; 24. and (4) the vertex angle.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1, 3, 4 and 5, the transparent electrode for suppressing bubble residue during film coating comprises a transparent substrate 1 and a metal wire 2 laid on one surface of the transparent substrate 1, wherein the metal wire 2 comprises a bottom surface 21 in contact with the transparent substrate 1, a top surface 22 parallel to the bottom surface 21 and a side surface 23 formed by connecting the bottom surface 21 and the top surface 22, the bottom surface 21 has a width W1, the top surface 22 has a width W2, W1 > W2, and the side surface 23 and the bottom surface 21 form an angle α which is an acute angle. When a film-shaped transparent insulating layer is applied to the surface of a wire electrode, the film-shaped transparent insulating layer is generally laid on the wire electrode and is laterally pressed by a roller, and therefore, when an angle formed by the bottom surface 21 and the side surface 23 in the cross-sectional shape of the wire is not less than 90 °, a portion where air cannot escape is generated. In contrast, when the included angle α formed by the bottom surface 21 and the side surface 23 is an acute angle and the top of the acute angle α has a certain degree of curvature, the bottom angle of the side surface of the whole protruding portion is reduced, so that air can easily escape when the film sheet is pressed and the adhesive is applied.

The transparent substrate 1 is a carrier of a transparent electrode, and is required to have a certain strength and rigidity, and may be a transparent ceramic inorganic substance such as glass (soda lime glass, alkali-free glass, etc.), quartz, PLZT (titanic acid, zirconic acid), etc., an organic resin, a polyester resin such as polyethylene terephthalate, a polyolefin-based resin such as polyethylene, polypropylene, cyclic polyolefin, etc., an acrylic resin in which methyl acrylate, and butyl acrylate are mixed, a polyurethane-based resin, a polyethersulfone-based resin, polycarbonate, a polysulfone-based resin, a polyether-based resin, a polyetherketoney-based resin, an adnexal-based resin, a still-based resin, a polyamide-based resin, an epoxy-based resin, and a solid transparent organic substance made of a general resin.

The thickness of the transparent substrate 1 is not particularly limited, and the inorganic transparent material has a thickness of 100-.

The metal wires may be in a grid shape (as shown in fig. 1), but may also be in a honeycomb shape, and may be in a 3, 4, 5, 6-sided or irregular shape, as long as they are circular. The metal is not particularly limited, and examples thereof include gold, silver, platinum, copper, tin, aluminum, nickel, titanium, ruthenium, molybdenum, and the like. And the metal wire may be a single layer or a plurality of layers.

As shown in fig. 2 to 3, the side surface 23 includes a straight line portion 231 near the top surface 22 and a circular arc portion 232 near the bottom surface 21, the side surface 23 is connected to the bottom surface 21 through the circular arc portion 232, and an extension line of the straight line portion 231 forms an angle α with the bottom surface 21. Set up circular arc part 232 at side 23 to connect bottom surface 21 through circular arc part 232, can make the top of side 23 and bottom surface 21 contained angle alpha have certain crookedness, be favorable to further reducing the angle of side 23 and bottom surface 21 contained angle, thereby when pressfitting transparent film and rubber coating, can make the air more easily run off, avoid the bubble to remain.

As shown in fig. 6, the angle formed between the side surface 23 and the top surface 22 is a vertex 24, and the vertex 24 may be an arc, a plurality of straight lines, or a cone. Several examples of the shape of the top corner 24 are given in fig. 6, and if the top corner 24 is an arc shape as shown in (1) th drawing in fig. 6, the radius of curvature of the arc shape in this section needs to be determined in consideration of the disconnection preventing effect in forming the transparent conductive film, the conductivity required for the metal wire, the safety in manufacturing the metal wire, and the like. The radius of curvature may be 0.1 μm or more, preferably 0.5 μm or more, more preferably 1.0 μm or more. When the radius of curvature is within the above range, the wire electrode can have an effect of preventing disconnection of the transparent conductive film. The upper limit of the curvature radius is not particularly limited, and is determined in consideration of the disconnection preventing effect in forming the transparent conductive film, the conductivity required for the metal wire, the safety in manufacturing the metal wire, and the like, but may be generally about 10 μm.

Further, the side surface 23 may be formed of a plurality of segments of circular arcs as shown in fig. 6 (6), in addition to being straight or being formed of straight portions and circular arc portions.

In a particular embodiment, the vertical distance between the bottom surface 21 and the top surface 22 is no greater than 10 μm.

In the embodiment, the side surface 23 and the bottom surface 21 or the angle formed by the extension line of the straight line portion 231 of the side surface 23 and the bottom surface 21 is 10 ° < α < 80 °, preferably 10 ° < α < 30 °.

As shown in FIG. 3, the width W1 of the bottom surface 21 is 1-20 μm, the width W2 of the top surface 22 is 0.5-18 μm, and the width W2 of the top surface 22 is preferably 0.5-7 μm in a specific embodiment.

As shown in fig. 7, the surface of the transparent substrate 1 further has a functional layer 11. In particular embodiments, the functional layer 11 may be a high refractive index layer, a low refractive index layer, a refractive index matching layer, or a hardened layer.

The transparent electrode prepared according to the application has various using modes, a transparent insulating layer with a transparent film can be covered on the metal wire electrode to be used as a sensing electrode, and a transparent electrode layer with a transparent film can be covered on the metal wire electrode to be used as an auxiliary electrode.

If the included angle between the side surface 23 and the bottom surface 21 is greater than or equal to 90 degrees in the process of forming the metal wire electrode by corrosion, the sprayed corrosive liquid is easily accumulated at the included angle after the included angle is increased, so that the metal wire is excessively corroded to be broken, and when the included angle between the side surface 23 and the bottom surface 21 is an acute angle, the corrosive liquid can be uniformly sprayed, so that the corrosion process is more controllable, and the wire breaking condition is less. The transparent electrode prepared according to the present application has an excellent disconnection preventing effect.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. A transparent electrode for suppressing bubble residue during film coating, comprising a transparent substrate (1) and a metal wire (2) laid on one surface of the transparent substrate (1), wherein the metal wire (2) comprises a bottom surface (21) in contact with the transparent substrate (1), a top surface (22) parallel to the bottom surface (21), and a side surface (23) formed by connecting the bottom surface (21) and the top surface (22), characterized in that: the width of the bottom surface (21) is W1, the width of the top surface (22) is W2, the W1 is more than W2, the angle formed by the side surface (23) and the bottom surface (21) is alpha, and the alpha is an acute angle.

2. The transparent electrode for suppressing bubble residues upon coating as claimed in claim 1, wherein: the side surface (23) comprises a straight line part (231) close to the top surface (22) and a circular arc part (232) close to the bottom surface (21), the side surface (23) is connected with the bottom surface (21) through the circular arc part (232), and an angle formed by the extension line of the straight line part (231) and the bottom surface (21) is alpha.

3. The transparent electrode for suppressing bubble residues upon coating as claimed in claim 1, wherein: the angle formed between the side surface (23) and the top surface (22) is a vertex angle (24), and the vertex angle (24) can be arc-shaped, multi-segment straight line or conical.

4. The transparent electrode for suppressing bubble residues upon coating as claimed in claim 1, wherein: the vertical distance between the bottom surface (21) and the top surface (22) is not more than 10 μm.

5. A transparent electrode for suppressing bubble residues when being coated with a film according to claim 1 or 2, wherein: said angle of 10 DEG < alpha < 80 deg.

6. The transparent electrode for suppressing bubble residues upon coating as claimed in claim 5, wherein: said angle of 10 DEG < alpha < 30 deg.

7. The transparent electrode for suppressing bubble residues upon coating as claimed in claim 1, wherein: the width W1 of the bottom surface (21) is 1-20 μm, and the width W2 of the top surface (22) is 0.5-18 μm.

8. The transparent electrode for suppressing bubble residues upon coating as claimed in claim 7, wherein: the width W2 of the top surface (22) is 0.5-7 μm.

9. The transparent electrode for suppressing bubble residues upon coating as claimed in claim 1, wherein: the surface of the transparent substrate (1) is also provided with a functional layer (11).

10. The transparent electrode for suppressing bubble residues upon coating as claimed in claim 5, wherein: the functional layer (11) is a high refractive index layer, a low refractive index layer, a refractive index matching layer or a hardening layer.

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