Method for producing conductor tracks and transparent composite glass panes

Abstract

The invention relates to a transparent composite pane, comprising a transparent carrier (2) and an electrically conductive grid structure (3) arranged on the carrier (2), said grid structure comprising a plurality of first conductor tracks (30) in a first direction and a plurality of second conductor tracks (31) in a second direction, said second conductor tracks intersecting the first conductor tracks (30). The electrically conductive grid structure (3) is divided into at least three spatially separated regions (10, 11, 12, 13, 14) and at least one first region (12) of the three regions (10, 11, 12, 13, 14) comprises a sub-region (120) having a subset of a plurality of conductor tracks (30) running in a first direction and not having conductor tracks (31) running in a second direction. An insulating layer (50) is arranged in the sub-region (120) at least partially on the plurality of conductor tracks (30) of the subset extending in the first direction. A plurality of conductors (51) extending in the second direction on the insulating layer (50) contact the conductor path from one of the second and third regions (11, 14).

Description

Technical Field

[0001] This application claims the priority of German patent application number 10 2022 122 745.6 filed on September 7, 2022, the disclosure of which is hereby incorporated by reference into the present application.

[0002] The invention relates to a method for producing a plurality of conductor tracks on a transparent target substrate, in particular glass. The invention also relates to a transparent glass device, in particular a vehicle glass. Background Art

[0003] In vehicles, but also in other areas, transparent displays are increasingly needed. The term "transparent display" is understood to mean a display surface that can not only display different information to an observer by means of light, but is also transparent so that the user can see through it not only when the display is switched on, but also when it is switched off. In this way, dynamic information can also be displayed in addition to static information. The display can be scaled, so that use in vehicle windows, in particular cars, airplanes, ships, buses, etc., but also in window panes for buildings is possible. Likewise, less complex transparent displays with a few small illuminated symbols, for example on doors, etc., are possible.

[0004] Transparent displays and symbols usually have a transparency of approximately 70%. For example, the transparency in side windows of motor vehicles is significantly reduced compared to conventional glass (transmission composite safety glass -90%).

[0005] The reason for this is the conductor tracks made of metal or transparent oxide on glass or transparent plastic (PET, PEN, PI) used for such transparent substrates. In some conventional applications that have proven reasonable from a circuit technology point of view, multilayer cross-matrix circuits are applied to transparent carriers and connected to the components, so that passive and active displays can be realized.

[0006] Furthermore, in some transparent displays a plurality of layers is required, for example in order to be able to form bridges or also to achieve a higher device or circuit density in some areas of the display.

[0007] Precisely in this area, in conventional arrangements the transparency is reduced or an additional plane is visible to the user.

[0008] There is therefore a need to produce in transparent displays the lowest possible visibility of conductor tracks for an observer and to nevertheless achieve a high component density. Summary of the invention

[0009] The subject matter of the independent claims takes this need into account. Developments and embodiments of the proposed principle are given in the dependent claims.

[0010] If the component density in transparent displays is to be increased, then in more complex transparent glass composite systems, multiple planes are placed one above the other, which are in turn separated from one another by transparent insulating layers. However, due to the grid-like grid structure used, the other layers are visible to the user. The same applies when covering by structures or areas belonging to another circuit. In addition, the grid-like grid structure causes an increase in the resistance of the conductors, especially when bridges are formed.

[0011] The inventors therefore proposed a further approach which, on the one hand, can be achieved with a smaller material usage and, on the other hand, reduces the above-mentioned disadvantages, in particular the reduced transparency at flatter viewing angles.

[0012] In some aspects, a transparent composite glass panel is proposed, which comprises a transparent carrier or a transparent substrate together with a conductive grid structure arranged thereon. The grid structure has a plurality of first printed conductors along a first direction and a plurality of second printed conductors along a second direction, the second printed conductors crossing the first printed conductors. In addition, the conductive grid structure is divided into at least three spatially separated regions, and at least one first region of the three regions comprises a sub-region. The sub-region is now constructed differently from the remaining grid structure and comprises a subset of a plurality of printed conductors extending in the first direction. In addition, the sub-region does not have a printed conductor extending in the second direction. In other words, the sub-region does not include crossed printed conductors.

[0013] According to the proposed principle, an insulating layer is now provided, which is arranged at least partially in the sub-region on the plurality of conductor tracks of the subset extending in the first direction. A plurality of conductor tracks extending in the second direction are now provided on the insulating layer, which extend into adjacent regions and contact one region from one of the second and third regions there.

[0014] In this way, a bridge structure is generated by substantially parallel running conductor tracks, which are arranged on the sub-areas, whose conductor tracks run perpendicularly thereto. The structure obtained in the top view thus corresponds to the remaining grid structure on the transparent carrier. This results in substantially the same visual impression. At the same time, the sections of the conductor tracks are kept short.

[0015] In some aspects, the contact region between the plurality of conductors extending in the second direction and the conductor tracks from the second region and one of the second regions is spaced from the subregion by at least one conductor track extending in the first direction. In other words, the bridge structure formed by the plurality of conductor tracks extends beyond the subregion, thereby connecting two regions of the grid structure on the substrate that are separated by the subregions.

[0016] In a further configuration, a contact region between a plurality of conductors extending in the second direction and a conductor track emerging from one of the second and third regions is arranged in the region at a point of intersection of the first and second conductor tracks.

[0017] Some aspects relate to a plurality of conductors extending in the second direction. In some embodiments, the conductors may include a cross structure arranged in the contact region, which is composed of a plurality of conductor tracks of the plurality of conductor tracks extending in the second direction and sub-sections arranged perpendicular thereto. Alternatively, a grid contact structure may be provided in the contact region, wherein in particular its grid length corresponds to the grid length of the grid structure. It is also conceivable to provide circular, elliptical, star-shaped or square contact points, whose positions correspond to the intersection points of the first and second conductor tracks of the corresponding region.

[0018] In some aspects, the contact area can also be realized on the grid structure of the transparent carrier. Correspondingly, in some aspects, a circular, oval, star-shaped or square contact point is arranged as part of the intersection between the first and second conductor tracks, wherein optionally, the end area of ​​a plurality of conductors extending in the second direction extends beyond the contact area.

[0019] Likewise, in some aspects, a plurality of contact points may be provided, which are located at the intersection between the first and second conductor tracks along the plurality of conductors extending in the second direction, wherein optionally, the end regions of the plurality of conductors extending in the second direction extend beyond the contact points. Finally, a contact point may be provided, which is provided as part of the intersection between the first and second conductor tracks, wherein optionally, the end regions of the plurality of conductors extending in the second direction extend beyond the contact points.

[0020] In some further aspects, the first and second conductor tracks are arranged substantially perpendicularly to each other, at an angle of 40° or at an angle of 60° on the transparent carrier. At least some of the conductor tracks are conductively coupled to each other in at least some of the intersections. A plurality of conductor tracks extending in the second direction electrically connects two other regions to each other. In particular, a bridge structure is realized in the described manner, which bridges the sub-regions and connects two otherwise electrically insulated regions of the grid structure to each other.

[0021] Some aspects relate to the insulating layer. In some aspects, the insulating layer can at least partially extend to the area adjacent to the sub-region, in particular into the other area. It is possible that the insulating layer is formed as a film, wherein generally the size of the insulating layer is larger than the corresponding size of the sub-region.

[0022] Therefore, the insulating layer extends in some aspects onto the first and / or second conductor tracks adjacent to the sub-region, in particular the first and / or second conductor tracks arranged in the second and / or third region. Alternatively, the first and / or second conductor tracks adjacent to the sub-region arranged in the second and / or third region are substantially free of material of the insulating layer. The sub-region comprises in some aspects a width that is substantially delimited by the second and / or third region.

[0023] The insulating layer can be formed as a continuous surface made of a transparent material. However, it is also possible to arrange the insulating layer in a strip shape, wherein the width is only slightly greater than the width of the conductor track arranged thereon. The position should be aligned with the area to be coupled along the vertically extending conductor track. In another embodiment, the insulating layer includes a round element, which is arranged at the intersection between the horizontally extending conductor track of the sub-area on the carrier and the second conductor track of the bridge structure.

[0024] In some further aspects, two of the at least three regions are also coupled to each other via a component, in particular an optoelectronic component. In some further aspects, a plurality of conductors extending along the second direction on the insulating layer are arranged opposite to a number of associated second conductors on the carrier and laterally offset therefrom. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other aspects and embodiments according to the proposed principles are disclosed with reference to different embodiments and examples which are described in detail with reference to the accompanying drawings.

[0026] Figure 1 A possible intermediate product of an exemplary composite glass pane according to some aspects of the proposed principles is shown in a top view;

[0027] Figure 2 A top view showing a portion of an exemplary composite glass pane according to some aspects of the proposed principles;

[0028] Figure 3 A top view showing a portion of another exemplary composite glass pane according to some aspects of the proposed principles;

[0029] Figure 4 A top view showing a portion of another exemplary composite glass pane according to some aspects of the proposed principles;

[0030] Figure 5 A top view showing a portion of another exemplary composite glass pane according to some aspects of the proposed principles;

[0031] Figure 6 A top view showing a portion of another exemplary composite glass pane according to some aspects of the proposed principles;

[0032] Figure 7 A to Figure 7 F shows a view of a possible conductor track, as it can be used in a bridge structure according to the proposed principle;

[0033] Figure 8 A to 8D show exemplary details of possible contact regions of a grid structure on a carrier in order to illustrate further aspects according to the proposed principle;

[0034] Fig.9A and 9B A cross-sectional view through a portion of an exemplary composite glass pane according to some aspects of the proposed principles is shown. DETAILED DESCRIPTION

[0035] The following embodiments and examples illustrate different aspects and combinations thereof according to the proposed principles. The embodiments and examples are not always in proportion. Likewise, different elements can be shown in an amplified or reduced manner in order to highlight individual aspects. It should be understood that the various aspects and features of the embodiments and examples shown in the drawings can be easily combined with each other without thereby compromising the principles according to the present invention. Some aspects have a regular structure or form. It should be noted that in practice, slight deviations from the ideal form can be possible without, however, violating the inventive concept.

[0036] In addition, the various figures, features and aspects are not necessarily shown at the correct size, and the ratios between the various elements do not have to be correct in principle. Some aspects and features are highlighted by being shown enlarged. However, terms such as "above", "above", "below", "below", "larger", "smaller", etc. are correctly shown with respect to the elements in the drawings. It is therefore feasible that such relationships between the elements are derived from the drawing.

[0037] Figure 1 A top view of a configuration of a composite glass pane is shown before a bridge structure according to aspects of the proposed principle is applied.

[0038] according to Figure 1 The composite glass pane 1 comprises a carrier substrate 2, on which a grid structure 3 is applied. The grid structure 3 in turn has a plurality of intersecting conductor tracks 30 and 31. Specifically, the conductor tracks 30 are arranged parallel to one another and cross conductor tracks 31 which are also arranged parallel to one another at an angle substantially perpendicular thereto. For the sake of simplicity, for the purposes of this application, the conductor tracks 30 are referred to as horizontal conductor tracks, and the conductor tracks 31 are referred to as vertical conductor tracks. However, it is known to those skilled in the art that other crossing angles can also be provided for different conductor tracks in order to implement the proposed principle and the desired grid structure 3. Furthermore, in the described embodiment, the spacings between the individual conductor tracks 30 or 31 are respectively the same, so that in Figure 1 In this context, it is also possible to select the individual spacings differently in order to obtain an implementation solution that is desired according to the needs of the user. The individual conductor tracks 30 and 31 cross at different points and are arranged to be conductive to each other. As a result, a conductive connection is obtained at each point of the grid structure 3.

[0039] exist Figure 1 The grid structure 3 shown in the figure is divided into different areas 10, 11, 12, 13 and 14 by separating sections 20. Each separating section 20 cuts off the conductor tracks 30 or 31, so that no conductive connection is produced by the continuous conductor tracks between the individual areas 10 to 14. In other words, at this point in the manufacturing method, the individual areas 10, 11, 12, 13 and 14 of the grid structure 3 on the carrier substrate 2 are electrically insulated from each other. The separation by the separating sections can be carried out, for example, by laser stripping of individual conductor tracks, but can also be carried out by mechanical separation, such as, for example, grinding off, sawing, etching off the corresponding conductor track structure, etc. In this embodiment, the width of the separating sections substantially corresponds to the grid spacing of the grid structure formed by the conductor tracks 30 and 31. Depending on the embodiment, the separating sections 20 can also be larger or smaller, as long as the insulation between the individual areas is ensured by the separating sections 20.

[0040] Between the regions 11 and 13 there is a contact region 40 for the component, which in the subsequent state of the composite glass pane 1 is occupied by the optoelectronic component. Furthermore, the region 12 comprises a subregion 120 which extends between the two separating sections 20. Specifically, this is a separating section which separates the region 20 from the region 12 and a separating section which electrically insulates the region 14 from the region 12.

[0041] The separation region 120 is designed according to the proposed principle such that it comprises only the first conductor track 30, i.e. the horizontal conductor track, and the vertical conductor tracks 31 which are also present in the remaining regions 12 are intentionally omitted in the sub-region 120, so that here no grid structure 3 is formed as in the remaining regions, but only a plurality of strip-shaped horizontal conductor tracks. As can already be seen in the top view, this results in a slightly greater transparency and a slightly different visual impression. It is also mentioned there that in Figure 1 The embodiment shown in can also be rotated so that the sub-area 120 in this case has only vertically extending conductor tracks, but no horizontal conductor tracks. In other words, according to the principle proposed in the present application, the sub-area 120 is configured so that the conductor tracks therein do not cross each other, i.e., there are no crossing conductor tracks therein.

[0042] According to the proposed principle, the sub-areas are now covered with a thin insulating layer 50. The insulating layer 50 is also transparent and comprises, for example, transparent plastic, silicon dioxide or transparent silicone or epoxy. It is applied as a thin layer in a printing, dispensing or spraying method. In some aspects, very thin films can also be used, which are self-adhesive or provided with an adhesive layer. The thickness of the insulating layer is a few micrometers.

[0043] In the present exemplary embodiment, the insulating material extends from the upper separating section 20 between the regions 11 and 12 through the subregion 120 to the lower separating section 20 between the regions 12 and 14. In this way, a rectangle is formed which covers the entire width of the subregion 120. In this embodiment, the insulating layer is therefore limited to the subregion 120. However, it can also be provided that the insulating layer extends partially through the separating section into the regions 11 and 14, i.e. is slightly longer or wider than the separating region. This can be useful especially when using a film, since in this case slight deviations during the application of the film can be compensated.

[0044] A plurality of conductors 51 are now arranged on the insulating layer 50, which extend substantially parallel to the conductor tracks 31 on the carrier substrate 2. The conductors 51 together with the insulating layer form a bridge structure and are electrically coupled to the conductor tracks 31 or 30 in the region 11. Similarly, the conductor tracks 51 are also electrically connected to the conductor tracks 31 and 30 of the region 14 via the section A in the region 14. Through the bridge structure thus formed, the region 11 is electrically coupled to the region 14. The structure of the bridge is formed according to the proposed principle so that the conductor tracks 51 on the insulating layer 50 extend only in one direction without crossing. In particular, the extension of the conductor tracks 52 follows the vertical conductor tracks 31 present in other sub-regions and regions in terms of shape and orientation.

[0045] Correspondingly, in sub-area 120, Figure 2 . In contrast to conventional solutions and bridges in which the grid structure 3 present in the region 12 is simply covered by additional conductors, in this exemplary embodiment, only one set of vertically extending conductor tracks, namely conductor tracks 51, is present according to the proposed principle. In short, in the subregion 120 there are only two types of conductor tracks, which cross each other in the top view, and no further conductor tracks or conductor track planes are present as in conventional solutions, which results from the fact that the actual grid structure of the subregion to be bridged is not adapted as proposed.

[0046] As a result, even at different viewing angles, there is no different impression of the sub-area 120 than in the other areas 10 to 14. In particular, at shallow viewing angles, i.e. viewing from the side, the user does not have the impression that the sub-area 120 is additionally shaded by its bridge structure, as is the case in conventional solutions. Likewise, due to the relatively short path length, i.e. the direct connection of the conductor 51, the resistance is reduced compared to other solutions that implement a grid-like structure.

[0047] Furthermore, the contact region 40 is equipped with an optoelectronic component 41 which electrically couples the region 13 to the region 11 .

[0048] Figure 3 A slightly modified design of such a bridge is shown. Here, the vertically extending conductor 51 is arranged slightly laterally offset relative to the original conductor track 31 in the regions 11 and 14. An end piece 510 is provided at the conductor 51. The end piece is designed as a circular contact surface, so that even in the case of a slight offset, a sufficiently good electrical contact with the corresponding vertical or horizontal conductor tracks in the regions 11 and 14 can be achieved. Depending on the viewing angle, the vertical conductor tracks appear slightly thicker in the region 11 and in the region of the parallel conductor tracks 51 and in the region 14, which usually reduces the transparency. However, due to the small expansion of the sections of the conductor 51 in the regions 11 and 14, this effect is negligible, especially in the longer bridge sections.

[0049] In the sub-region 120, however, this effect of the slight offset is not visible for the region 12 due to the lack of vertical conductor tracks in said region, so that the effect of a possible reduction in transmission caused by the slight offset is limited overall. For this purpose, in the present case, the section of the conductor 51 extends only over two grid lengths, which should be quite small in relation to the overall length of the bridge.

[0050] exist Figure 3 The embodiment shown in FIG. 1 is particularly advantageous over conventional embodiments because, as shown, slight lateral offsets are not critical in the solution according to the invention when implementing such a bridging connection. This also allows different deposition or coating processes to be implemented for embodiments with greater tolerances than is the case with conventional solutions.

[0051] Figure 4 A further embodiment of the proposed principle is shown, in which the bridges and in particular the insulating layers are designed differently between the vertically running conductors 51 and the horizontally running conductor tracks 30 of the partial regions.

[0052] In this exemplary embodiment, in contrast to the above-described embodiments, the insulating layer is not transferred completely to the sub-region 120 in a planar manner. Rather, the insulating layer touches the individual conductors 51 in the form of strips or borders, so that a strip-shaped insulating layer 50' is provided in the sub-region 120. This design can be implemented in different ways. On the one hand, it is possible to arrange thin, mutually separated strips on the sub-region 120 along the printed conductors to be laid subsequently by means of spraying or other dispensing methods, and to cover the individual horizontally extending printed conductors 30 in this way. Subsequently, the material of the conductors 51 is applied to the strips and connected to the printed conductors in the sub-regions 11 or 14.

[0053] Alternatively, it is also possible to produce the conductor 51 with the insulating material 50 ', more precisely, before the conductor 51 is applied to the corresponding connection points in the sub-regions and regions 11 and 14. In this embodiment, the conductor 51 is thus similar to a conventional untreated metal wire, as is possible, for example, in the case of a larger cross section of the conductor track. In both cases, the transmittance is further improved because the insulating material extends only around the thin area around the vertically extending conductor 51, but not in other free areas between the individual vertically extending conductor tracks. Nevertheless, sufficient insulation is achieved between the horizontally extending conductor tracks 30 and the conductor 51 in the sub-region 120.

[0054] Figure 5 Another design form is shown, in which the amount of insulating material used is further reduced. In this design, drop-shaped dots 50" consisting of insulating material are applied to the horizontally extending conductor tracks 30 in the sub-area 120 at the subsequent intersections. The dots thus extend over the sub-area of ​​the horizontally extending conductor tracks 30. Subsequently, vertical conductors 51 are applied along the sub-area 120 above the insulating dots starting from the area 11 or 14. This results in a row of dots 50" consisting of insulating material, which are arranged at the corresponding intersections between the conductors 51 and 30 in the sub-area 120, so as to electrically insulate them from one another. In the section A in the areas 11 and 14, as in the previous embodiments, the conductor 51 is connected to the vertical areas of the conductor tracks 31 and 30 in order to ensure sufficiently good electrical contact.

[0055] The proposed principle of using conductor tracks as bridge structures in subregions in which other conductor tracks are respectively removed can also be transferred to applications in which the region to be bridged can include a plurality of subregions of different regions. Figure 6 A corresponding embodiment is shown, in which the conductive line 51 spans across a plurality of sub-regions 120 .

[0056] In the present exemplary embodiment, two spatially separated sub-regions 120 are arranged in the region 12, between which a section of the region 14 is arranged. The sub-regions 120 are each designed with horizontally extending conductor tracks 30, but without corresponding vertically extending conductor tracks 31. An insulating layer 50 is arranged above the sub-regions 21, on which vertically extending conductor sections 51 are applied. They also extend along the section B of the region 11 or 14 and are electrically contacted there. In addition, a further region 15 is provided, which is also designed with a bridge, i.e., with insulating material 50 in its sub-region 120.

[0057] In this way, the conductor 51 can contact the segments B in the different regions 11 and 14 and extend as a bridge structure along the corresponding sub-region beyond other regions, such as, for example, the regions 12 and 15. In this way, a connection between different spatially separated regions across a plurality of bridge elements and bridge segments is possible without significantly impairing the transparency of the region.

[0058] In order to contact the individual conductors 51 of the bridge element in the area to be contacted, there are a number of implementations.

[0059] Figure 7 A to 7F show different designs. Figure 7 A shows an end region 511 of the corresponding conductor 51 with a T-shaped piece, ie a section perpendicular to the conductor 51 . In one embodiment, the section perpendicular thereto therefore also runs perpendicular to the corresponding vertical conductor track 31 or parallel to the horizontally running conductor tracks 30 .

[0060] In the child Figure 7 In B, in order to improve the contact, a plurality of such sections 512 are provided. Accordingly, a cross structure is partially formed. The additional sections 512 are spaced apart from each other on the substrate at a spacing of the grid length of the underlying grid structure. Here, the length of the wire 51 of the bridge structure is selected as a whole so that the section 512 extending perpendicularly thereto is at or directly adjacent to the intersection on the area to be contacted. This achieves better contact and thus a lower transition resistance.

[0061] exist Figure 5 In another embodiment shown in C, the end region is designed as a rounded surface 510. This embodiment corresponds to Figure 3 , in which the surface of the end region 510 can be selected to be of different sizes, so that it ensures sufficiently good contact when the conductor 51 is applied to the insulating section or the region to be contacted.

[0062] Figure 7D shows another improvement, in which contact surfaces 510 are arranged multiple times, thus forming contact surfaces 510'. The spacing between the individual contact surfaces 510 and 510' along the conductor 51 corresponds here again to the grid length or a multiple thereof, so that the corresponding surface is preferably located at the intersection of the conductor tracks 30 and 31.

[0063] Figure 7 E shows another embodiment in which the end region of the conductor 51 is provided with a grid structure 513. The grid structure corresponds in size and design, for example, to the grid structure of the conductor tracks 30 and 31 located on the substrate below. This results in particularly simple production, since such a bridge structure with the elements 51 and 513 is already produced on the finished substrate and can then be transferred to the insulating material and the adjacent areas to be contacted. Figure 7 F shows a pair Figure 7 An alternative embodiment of C, in which the end region is formed by a star-shaped structure 514 , thereby increasing the possible contact surface with the regions to be contacted and with the conductor tracks.

[0064] In addition to a corresponding structuring of the end regions of conductors 51 , it is also possible to adjust the sections for contacting in the respective regions to be contacted on the substrate, so that horizontally or vertically extending conductor tracks 30 and 31 are structured.

[0065] Figure 8 8A to 8D show corresponding designs, wherein for better illustration, the wires 51 of the bridge structure are arranged on the transparent carrier 2 slightly offset laterally from the corresponding sections on the area to be contacted of the grid structure 3. Figure 8 D corresponds to a normal design without further measures and can therefore be manufactured particularly easily. Figure 8 In A, in the contact section of the region, some intersections of the vertical or horizontal conductor tracks are provided with a star structure. Correspondingly, a larger contact surface is obtained between the conductor tracks 30 and 31 and the conductor 51 of the bridge structure. Figure 8 In B, rounded contact surfaces are provided at a plurality of intersection points, so that better contact is achieved here due to the larger contact surface. Similar advantages are also achieved in the sub Figure 8 C, where the contact surface is enlarged to the same extent. Figure 8 The difference between B and 8C is basically that Figure 8 The enlarged contact surface in C is only at the intersections of the vertical conductor tracks, however. Figure 8 The contact surface in B is located in a plurality of conductor tracks running parallel to one another.

[0066] Fig.9A Now, the horizontal conductor tracks are shown. Figure 2XX of the regions 14, 12 and 11 of the drawings, wherein a bridge structure for bridging the sub-region 120 is provided. The cross section includes a carrier 2, on which a plurality of conductor tracks 30 are provided. The conductor tracks extend away from the cross section and are shown as circular conductor tracks for simplicity. The conductor tracks 31 extend along the drawing plane or parallel to it, and are interrupted by the separation section 20. The separation section 20 therefore divides the grid structure into regions 14, 12 and 11. In the cross section shown through the sub-region 120, an insulating material is now provided above the individual conductors 30 within the sub-region 120. Additional conductor tracks 51 are applied to the insulating material, which contact the conductor tracks 30 and the conductor tracks 31 in the sections of the sub-region 14 or 11, respectively, so as to produce an electrical connection between the region 14 and the region 11.

[0067] exist Fig. 9B 90° shows a cross-sectional view of the same arrangement rotated by 90°. Now, the horizontal conductor tracks 30 run along and parallel to the drawing plane, while the conductor tracks 31 of the individual regions extending perpendicular thereto protrude out of the drawing plane. In the section, the conductors 51 on the insulating material 50 lead out of the drawing plane and cross the conductor tracks 30 in the region 12 extending perpendicular thereto, wherein they are electrically separated from each other by the insulating layer 51. In the top view, the user can only see the crossing structure, which also passes through the conductor tracks 30 and 31 outside the region 12 or 11.

[0068] The method proposed here makes it possible to cost-effectively produce conductor tracks with a small width in the range of less than 10 μm and an insulation associated therewith as a bridge structure. The idea is that in the region of the bridging connection only conductor tracks extending in one direction are provided on the bridge plane, which cross the conductor tracks located below on the substrate plane, in particular perpendicularly. The conductor tracks extending parallel to the bridge plane are removed on the substrate plane, so that overall only a simple structure is visible in a top view, which structure substantially corresponds to the grid structure 3 on the transparent carrier 2.

[0069] In this way, a higher transparency can be achieved, in particular with a lateral offset of the bridge structure or also at flat viewing angles and thick insulating layers. At the same time, the resistance of the bridge structure can be reduced, since the conductor length now extends continuously and no longer in a zigzag manner. Likewise, a lower contact resistance can be achieved by thickening the conductor tracks. Correspondingly, the grid structure and the bridges associated therewith can be produced with less calibration accuracy and thus also with less associated costs, without losses in terms of transparency or electrical properties. In addition, existing dispensing processes or spraying processes can be used in an efficient manner.

[0070] List of reference numerals:

[0071] 1 Composite glass panel

[0072] 2. Carrying substrate, transparent carrier

[0073] 3 Grid structure

[0074] Area 10, 11

[0075] Area 12, 13

[0076] Area 14, 15

[0077] 20 Separation section

[0078] 30 horizontal printed conductors

[0079] 31 vertical printed conductors

[0080] 40 contact area

[0081] 41 Optoelectronic devices

[0082] 50 insulation layer

[0083] 51 wire

[0084] 120 sub-areas

[0085] 510 end region, contact surface

[0086] 510' end area, contact surface

[0087] 511 End area, T-piece

[0088] 512 End area, intersection

[0089] 513 End area, grid

[0090] 514 end area, star structure

[0091] Section A, B

Claims

1. A transparent composite glass plate, comprising: - a transparent carrier (2); - a conductive grid structure (3) arranged on the carrier (2), the conductive grid structure comprising a plurality of first printed conductors (30) along a first direction and a plurality of second printed conductors (31) along a second direction, the second printed conductors crossing the first printed conductors (30); - wherein the conductive grid structure (3) is divided into at least three spatially separated regions (10, 11, 12, 13, 14), and at least one first region (12) of the three regions (10, 11, 12, 13, 14) comprises a subregion (120) having a subset of a plurality of conductor tracks (30) extending in a first direction and having no conductor tracks (31) extending in a second direction; an insulating layer (50) which is at least partially arranged on a plurality of conductor tracks (30) of the subset extending in a first direction in the sub-region (120); A plurality of conductors (51) extending in a second direction on the insulating layer (50) and contacting a conductor track emerging from one of the second and third regions (11, 14).

2. The transparent composite glass sheet according to claim 1, wherein The contact region (A, B) is spaced from the subregion (120) by at least one conductor track (30) extending in the first direction between the plurality of conductor tracks (51) extending in the second direction and a conductor track (30, 31) from one of the second and third regions (11, 14), and / or wherein The contact region (A, B) is arranged between the plurality of conductors (51) extending in the second direction and a conductor track (31, 31) emerging from one of the second and third regions (11, 14) at a point of intersection of a first and a second conductor track in the region.

3. The transparent composite glass pane according to any one of the preceding claims, The plurality of conductive lines extending along the second direction include: - a cross structure (512) arranged in the contact area (A, B), the cross structure being composed of several conductors among the plurality of conductors extending along the second direction and sub-segments arranged perpendicular thereto; or - a grid contact structure (513) arranged in the contact region (A, B), wherein in particular the grid length of the grid contact structure corresponds to the grid length of the grid structure (3); or - Circular, oval, star-shaped or square contact points (510, 510', 514), the positions of which correspond to the intersection points of the first and second conductor tracks of the respective region.

4. The transparent glass according to any one of the preceding claims, wherein in the contact region: - a circular, oval, star-shaped or square contact point is arranged as part of the intersection between the first and second conductor tracks (30, 31), wherein optionally, the end region of the plurality of conductor tracks (51) extending in the second direction extends beyond the contact point; and / or - a plurality of contact points are provided, which are arranged at intersections between the first and second printed conductors (30, 31) along the plurality of conductors extending in the second direction, wherein optionally, end regions of the plurality of conductors (51) extending in the second direction extend beyond the contact points; and / or A contact point is provided as part of a crossover point between the first and second conductor tracks (30, 31), wherein optionally, end regions of the plurality of conductor tracks extending in the second direction extend beyond the contact point.

5. The transparent composite glass pane according to any one of the preceding claims, The first and second conductors (30, 31) are arranged at an angle of 85° to 95°, 30° to 50° or 55° to 65° relative to each other, and at least some of the intersections are conductively coupled to each other.

6. The transparent composite glass pane according to any one of the preceding claims, The plurality of conductive lines (51) extending along the second direction electrically connect the two other regions (11, 14) to each other.

7. The transparent composite glass pane according to any one of the preceding claims, The insulating layer (50) extends onto a first and / or second conductor track adjacent to the sub-region (120), in particular a first and / or second conductor track (30, 31) arranged in the second and / or third region (11, 14); or the first and / or second conductor track (30, 31) adjacent to the sub-region (120) and arranged in the second and / or third region substantially does not have material of the insulating layer.

8. The transparent composite glass pane according to any one of the preceding claims, The partial region (120) comprises a width which is substantially delimited by the second and / or third region (11, 14).

9. The transparent composite glass pane according to any one of the preceding claims, Two of the at least three regions (11, 13) are coupled to one another via a component (41), in particular an optoelectronic component.

10. The transparent composite glass pane according to any one of the preceding claims, wherein the insulating layer (50') is arranged in a strip-shaped manner along the second conductor track; or The insulating layer (50") is arranged in a circular shape at intersections between the first conductor track (30) and the plurality of conductors (51) extending in the second direction.

11. The transparent composite glass pane according to claim 1, wherein the plurality of conductors (51) extending in the second direction on the insulating layer are arranged opposite to a number of second conductors associated with the grid structure (3) and laterally offset therefrom.

12. A method for producing a plurality of conductor tracks on a transparent target carrier, in particular a glass plate, comprising the following steps: - providing a target carrier (2) having a grid structure (3) arranged thereon, the grid structure being composed of a plurality of conductor tracks (30) extending in a first direction and a plurality of conductor tracks (31) extending in a second direction, the conductor tracks extending in the second direction crossing the conductor tracks (30) extending in the first direction, wherein the grid structure (3) has at least three spatially separated regions (10, 11, 12, 13, 14); - at least one region (12) of the three regions comprises a sub-region (120) having a subset of a plurality of conductor tracks (30) extending in a first direction and not comprising a conductor track (31) extending in a second direction; - forming an insulating layer (50) in the sub-region (120) at least partially on a plurality of conductor tracks of the subset extending in a first direction; - applying a plurality of conductor tracks (51) extending in a second direction to the insulating layer and contacting these conductor tracks with conductor tracks emerging from one of the first and second regions.

13. The method according to claim 12, wherein: The insulating layer consists of: - forming a strip-shaped insulating layer (50') on the sub-region (120) along the plurality of conductors extending in the second direction or along the second conductor track; or A plurality of elements (50") formed of the insulating layer are formed at intersections between the first conductor track (30) and the plurality of conductors (51) extending in the second direction.

14. The method according to any one of claims 12 or 13, wherein the plurality of conductive lines extending along the second direction comprises: - a cross structure (512) arranged in the contact area (A, B), the cross structure being composed of several conductors among the plurality of conductors extending along the second direction and sub-segments arranged perpendicular thereto; or a grid contact structure (513) arranged in the contact region, wherein in particular the grid length of the grid contact structure corresponds to the grid length of the grid structure (3); or - Circular, oval, star-shaped or square contact points (510, 510', 514), the positions of which correspond to the intersection points of the first and second conductor tracks of the respective region.

15. The method according to any one of claims 12 to 14, wherein the plurality of conductive lines extending along the second direction comprises: - a cross structure (512) arranged in the contact region, the cross structure being composed of several conductors among the plurality of conductors extending along the second direction and sub-segments arranged perpendicular thereto; or a grid contact structure (513) arranged in the contact region, wherein in particular the grid length of the grid contact structure corresponds to the grid length of the grid structure (3); or - Circular, oval, star-shaped or square contact points (510, 510', 514), the positions of which correspond to the intersection points of the first and second conductor tracks of the respective region.

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