ILLUMINABLE COMPOSITE PANE

Abstract

A composite pane is presented. The composite pane includes an outer pane and an inner pane that are bonded to each other via an intermediate layer. The composite pane further includes a light-diffusing glass fiber that is suitable for emitting light by diffusion via its side wall along its extension length. According to one aspect, the glass fiber is arranged, in sections, between the intermediate layer and the outer pane. According to another aspect, the glass fiber is arranged, in sections, between the intermediate layer and the inner pane.

Claims

1-15. (canceled)

16. A composite pane, comprising: an outer pane and an inner pane that are bonded to each other via an intermediate layer; and a light-diffusing glass fiber that is suitable for emitting light by diffusion via its side wall along its extension length, wherein the glass fiber is arranged, in sections, between the intermediate layer and the outer pane and/or between the intermediate layer and the inner pane.

17. The composite pane according to claim 16, wherein the glass fiber is embedded in one surface of the intermediate layer.

18. The composite pane according to claim 16, wherein the glass fiber is connected by a fastening means to the intermediate layer, the outer pane, and/or the inner pane.

19. The composite pane according to claim 16, wherein the fastening means is an adhesive.

20. The composite pane according to claim 16, wherein the fastening means is transparent.

21. The composite pane according to claim 16, wherein the fastening means is a double-sided adhesive tape.

22. The composite pane according to claim 16, wherein the fastening means comprises at least one of an acrylate adhesive, a methyl methylacrylate adhesive, a cyanoacrylate adhesive, a polyepoxide, a silicone adhesive, and/or a silane cross-linking polymeric adhesive, and/or copolymers, or mixtures thereof.

23. The composite pane according to claim 16, wherein the fastening means is a cord.

24. A composite pane arrangement, comprising: a composite pane according to claim 16; and a lighting means for coupling light into the glass fiber.

25. A composite pane arrangement according to claim 24, wherein the lighting means comprises a laser diode or a light-emitting diode.

26. A method for producing a composite pane, comprising: providing a composite pane according to claim 16; preparing a glass fiber, a thermoplastic intermediate layer, an outer pane with an interior-side surface, and an inner pane with an exterior-side surface; arranging the glass fiber on the intermediate layer, on the interior-side surface of the outer pane or on the exterior-side surface of the inner pane; arranging the intermediate layer between the outer pane and the inner pane; and bonding the interior-side surface of the outer pane to the exterior-side surface of the inner pane via the intermediate layer by lamination.

27. The method according to claim 26, wherein the glass fiber is embedded into the surface of the intermediate layer by local heating and/or by exertion of a pressure.

28. The method according to claim 27, wherein the local heating is performed by a soldering iron, or a heated pressure roller, or a heating plate.

29. The method according to claim 26, wherein the glass fiber is connected by a fastening means to the intermediate layer, the interior side of the outer pane, and/or the exterior side of the inner pane.

30. The method according to claim 26, wherein the glass fiber is connected to the intermediate layer by a cord, the cord surrounding the glass fiber and the intermediate layer in loop form through two openings in the intermediate layer.

31. A method of using a composite pane, comprising: providing a composite pane according to claim 16; and using the composite pane in transportation means for travel on land, in the air, or on water.

32. The method of using a composite pane according to claim 31, wherein the transportation means is a train, a watercraft, and/or motor vehicle.

33. The method of using a composite pane according to claim 32, wherein the composite pane is used in a motor vehicle as a windshield, rear window, or side pane.

34. The method of using a composite pane according to claim 31, wherein the composite pane is used as roof panel in buildings.

35. A method of using a lighting means, comprising: providing the composite pane arrangement according to claim 24; and using the lighting means for the identification of an electrical function, wherein the electrical function is not the operation of the lighting means itself.

36. The method of using the lighting means according to claim 35, wherein the lighting means is used for the identification of heating of the composite pane.

37. The method of using the lighting means according to claim 35, wherein the lighting means is used for the identification of moving of the composite pane.

38. The method of using the lighting means according to claim 35, wherein the lighting means is used for the identification of opening or closing of a side window.

39. The method of using the lighting means according to claim 35, wherein the lighting means is used for the identification of locking or unlocking of a door and/or of a window of a vehicle.

Description

[0056] In the following, the invention is explained in detail with reference to drawings and exemplary embodiments. The drawings are schematic depictions and not true to scale. The drawings in no way restrict the invention.

[0057] They depict:

[0058] FIG. 1A a plan view of an embodiment of the composite pane arrangement according to the invention,

[0059] FIG. 1B a cross-sectional view along the section line A-A through the composite pane of FIG. 1A,

[0060] FIG. 2A a plan view of an alternative embodiment of the composite pane arrangement according to the invention,

[0061] FIG. 2B a cross-sectional view along the section line A-A through the composite pane of FIG. 2A,

[0062] FIG. 3A a plan view of an alternative embodiment of the composite pane arrangement according to the invention,

[0063] FIG. 3B a cross-sectional view along the section line A-A through the composite pane of FIG. 3A,

[0064] FIG. 3C an enlarged representation of a view through the composite pane of FIG. 3A,

[0065] FIG. 3D an enlarged representation of a view through an alternative composite pane,

[0066] FIG. 4A a plan view of an alternative embodiment of the composite pane arrangement according to the invention,

[0067] FIG. 4B a cross-sectional view along the section line A-A through the composite pane of FIG. 4A,

[0068] FIG. 4C an enlarged representation of a view through the composite pane of FIG. 4A,

[0069] FIG. 4D an enlarged representation of a view through an alternative composite pane,

[0070] FIG. 5A a plan view of an alternative embodiment of the composite pane arrangement according to the invention,

[0071] FIG. 5B a cross-sectional view of along the section line A-A through the composite pane of FIG. 5A,

[0072] FIG. 5C an enlarged representation of a view through the composite pane of FIG. 5A,

[0073] FIG. 5D an enlarged representation of a view through an alternative composite pane,

[0074] FIG. 6 a flowchart of an embodiment of the method according to the invention.

[0075] FIG. 1A depicts a plan view of a composite pane arrangement 100 according to the invention, which comprises a composite pane 10 according to the invention and a lighting means 20. FIG. 1B depicts a cross-sectional view along the section line A-A through the composite pane 10 of FIG. 1A. The composite pane 10 is configured as a side pane for a side window of a passenger car in this example.

[0076] The composite pane 10 according to the invention includes an outer pane 1 with an interior-side surface II, an inner pane 2 with an exterior-side surface III, and a thermoplastic intermediate layer 3 that bonds the interior-side surface II of the outer pane 1 to the exterior-side surface III of the inner pane 2 to one another via the pane surface. The outer pane 1 and the inner pane 2 are made, for example, of soda lime glass and have, for example, a thickness of 2.1 mm in each case. The thermoplastic intermediate layer 3 is, for example, a film made of polyvinyl butyral (PVB) with a thickness of 0.76 mm. Of course, other glass panes or polymeric panes can also be used as the outer pane and inner pane. Furthermore, the thickness of the outer pane 1 and inner pane 2 can be adapted to the respective use.

[0077] In this exemplary embodiment, one light-diffusing glass fiber 4 is arranged between the interior-side surface II of the outer pane 1 and the intermediate layer 3. Of course, the glass fiber 4 can also be arranged between the intermediate layer 3 and the exterior-side surface III of the inner pane 2. Alternatively, an additional intermediate layer (not shown here) can also be arranged between the intermediate layer 3 and one of the panes 1,2, wherein the glass fiber 4 is arranged between the two intermediate layers.

[0078] In the production of the composite pane 10, the outer pane 1 is bonded to the inner pane 2 via the intermediate layer 3 by lamination. The outer pane 1 and the inner pane 2 are very rigid and non-flexible at the temperatures and pressures customary for this. The intermediate layer 3 is malleable at the temperatures and pressures customary for this such that the glass fiber 4 can penetrate into the surface of the intermediate layer 3 and is embedded there.

[0079] To facilitate production, it is advantageous to fasten the glass fiber 4, before lamination, on the intermediate layer 3, the interior-side surface II of the outer pane 1, or the exterior-side surface III of the inner pane 2. In an advantageous embodiment, the glass fiber 4 is bonded to one of the surfaces of the intermediate layer 3 under the action of pressure and temperature, for example, by ironing with a flat iron. The pre-laminate of glass fiber 4 and intermediate layer 3 thus produced can be arranged particularly simply between the outer pane 1 in the inner pane 2, whereby the glass fiber 4 can be positioned in a very defined and precise manner.

[0080] The light-defusing glass fiber 4 has a diameter d of, for example, 200 ?m and is suitable for emitting light via its side wall along its extension length. The light is coupled into the glass fiber 4 via one end face of the glass fiber 4. For this, a lighting means 20 is arranged on one end of the glass fiber 4. The lighting means 20 consists, for example, of a laser diode, which can, for example, couple light into the glass fiber 4 via a reflector. Upon application of a voltage to the laser diode, light is coupled into the glass fiber 4. The glass fiber 4 diffuses the light on its surface along its entire extension length such that the glass fiber 4 lights up over its entire extension length.

[0081] Here, the composite pane 10 is, for example, a side pane of a vehicle door of a passenger car, and the glass fiber 4 is arranged near the front and top side edge 6 of the composite pane 10. The border of the side pane in the vehicle door is, for example, frameless such that the side pane is guided and inserted into the vehicle door only at its lower side. Here, the lighting means 20 is, for example, a high-performance light-emitting diode.

[0082] The composite pane arrangement 100 produced with this composite pane 10 is, for example, configured such that, upon opening of the vehicle door, the lighting means 20 is activated and the glass fiber 4 is illuminated. This has the particular advantage that the vehicle door is illuminated in the opened state and is particularly well discernible by other road users. The visibility of the composite pane 10 thus illuminated is particularly increased in the darknessin particular since the composite pane 10 in this example is frameless and is fastened in the vehicle door only at its lower side edge. The side edge of the composite pane 10 illuminated by the glass fiber 4 is thus freely visible without obstruction.

[0083] The lighting means 20 can be monochromatic or can identify different states by different colors. Thus, the warning function is particularly high for a red lighting means, since a red color is commonly associated with danger. Green lighting means are readily discerned in the dark since the human eye has particularly high sensitivity for the green color spectrum.

[0084] In another exemplary embodiment, the lighting means 20 has, for example, a red light-emitting diode and a blue light-emitting diode. In that case, the composite pane arrangement 100 is connected, for example, to the vehicle's electronic system such that when the composite pane 10 is opened by an electrical window lifter, the glass fiber 4 is illuminated with blue light; and when the composite pane 10 is closed, the glass fiber 4 is illuminated with red light. This has the particular advantage that the direction of movement of the composite pane 10 relative to the doorframe thus becomes visible and individuals can quickly recognize the danger of entrapment of body parts or objects in the closing window. Of course, other colors or white light can also be used for the illumination of the glass fiber 4. Furthermore, other functions can also be indicated by the illumination of the composite pane 10 or particularly aesthetic lighting can be realized.

[0085] Composite panes 10 according to the invention can optionally have an additional electrical function and, for example, an electrical heating function. For example, heating means (not shown here), such as heating wires or heating layers can be arranged in the region between the outer pane 1 and the inner pane 2. Such heating wires are made, for example, of copper or tungsten and have a thickness of, for example, 30 ?m. Transparent, electrically conductive coatings, as described above are, for example, known as heating layers. Heating wires and heating layers can be formed, for example, by busbars, for example, strips of a copper foil with a thickness of, for example, 100 ?m and a width of, for example, 7 mm. When a voltage is applied to the busbars, a current flows through the heating wires or heating layer, by which means the heating effect is produced. The voltage can be the usual automobile on-board voltage of 14 V, or even a voltage of, for example, 42 V or 48 V. Of course, the voltage can also be a customary supply voltage of, for example, 110 V or 220 V, in particular with the use of a composite pane according to the invention 10 in building technology, such as a transparent heater. The corresponding level of heating of the composite pane 10 can, again, be indicated by the illumination of the glass fiber 4 by the lighting means 20.

[0086] FIG. 2A depicts a plan view of an alternative composite pane arrangement 100 according to the invention, which includes an alternative composite pane 10 according to the invention, and a lighting means 20. FIG. 2B depicts a cross-sectional view along the section line A-A through the composite pane 10 of FIG. 2A. In this example, the composite pane 10 is configured as a windshield of a passenger car.

[0087] The composite pane 10 according to the invention includes an outer pane 1 with an interior-side surface II, an inner pane 2 with an exterior-side surface III, and a thermoplastic intermediate layer 3 that bonds the interior-side surface II of the outer pane 1 to the exterior-side surface III of the inner pane 2 to one another via the pane surface. The outer pane 1 and the inner pane 2 are made, for example, of soda lime glass and have, for example, a thickness of 2.1 mm in each case. The thermoplastic intermediate layer 3 is, for example, a film made of polyvinyl butyral (PVB) with a thickness of 0.76 mm. Of course, other glass panes or polymeric panes can also be used as the outer pane 1 and inner pane 2. Furthermore, the thickness of the outer pane 1 and the inner pane 2 can be adapted to the respective use.

[0088] In this exemplary embodiment, two light-defusing glass fibers 4 are arranged between the interior-side surface II of the outer pane 1 and the intermediate layer 3. Of course, the glass fibers 4 can also be arranged between the intermediate layer 3 and the exterior-side surface III of the inner pane 2. Alternatively, an additional intermediate layer (not shown here) can also be arranged between the intermediate layer 3 and one of the panes 1,2, wherein the glass fibers 4 can be arranged between the two intermediate layers.

[0089] In the production of the composite pane 10, the outer pane 1 is bonded to the inner pane 2 via the intermediate layer 3 by lamination. The outer pane 1 and the inner pane 2 are very rigid and non-flexible at the temperatures and pressures customary for this. The intermediate layer 3 is malleable then such that the glass fiber 4 can penetrate into the surface of the intermediate layer 3 and is embedded there.

[0090] The light-defusing glass fibers 4 have a diameter d of 150 ?m in each case and are suitable for emitting light via their side wall along their extension length. The light is coupled into the glass fiber 4 via one end face of the glass fiber 4. For this, a lighting means 20 is arranged on one end of each glass fiber 4. The lighting means 20 consists, for example, of a laser diode, which can, for example, couple light into the glass fiber 4 via a reflector. Upon application of a voltage to the laser diode, light is coupled into the glass fiber 4. The glass fiber 4 then diffuses the light on its surface along its entire extension length such that the glass fiber 4 lights up over its entire extension length.

[0091] The composite pane 10 has, in this example, on a peripheral edge region of the exterior-side surface III of the inner pane 2, an opaque masking print 7, for example, a black print made of a ceramic ink, which, through firing, forms a permanent bond with the glass surface III of the inner pane 2. The masking print 7 has the purpose of blocking the view of the gluing points with which the composite pane 10 is glued into a vehicle body. At the same time, the gluing point is protected against light irradiation and, in particular, against irradiation by UV light, which would cause accelerated aging of the gluing point.

[0092] The glass fibers 4 are arranged, in this example, in the form of a frame in the edge region of the composite pane 10. Here, the glass fibers 4 are, for example, arranged in a region that is concealed by the interior-side surface IV of the inner pane 2 by means of the masking print 7. This means that the glass fibers 4 cannot be seen from the vehicle interior. In particular, light emitted on the sidewalls of the glass fibers 4 also does not enter the vehicle interior such that occupants cannot be dazzled or disturbed thereby.

[0093] Here, the lighting means 20 is, for example, a high-performance laser diode. The composite pane arrangement 100 produced with this composite pane 10 is, for example, configured such that the lighting means 20, upon locking or unlocking the vehicle doors, lights the glass fiber 4 for a certain period of time, for example, 1 min. This can occur independent of or simultaneously with the rest of the vehicle lighting. Such illumination can serve as an unambiguous signal to the individual performing the locking and unlocking, for example, using a radio receiver, that the vehicle is securely locked or unlocked. At the same time, a coming-home or leaving-home function can be realized therewith.

[0094] The lighting means 20 can be monochromatic or can identify different states by different colors. Different colors permit readily distinguishing visually between locking and unlocking the vehicle. If the illumination of the glass fiber 4 is used as a warning function, a red or orange light can, for example, be used since a red or orange color is commonly associated with danger. Green lighting means are, in particular, readily discerned in the dark since the human eye has a particularly sensitivity for the green color spectrum.

[0095] Of course, the glass fiber 4 need not be arranged along one side edge of a pane or only along one side edge, but can be arranged in any manner desired. In particular, one or a plurality of glass fibers 4 can be arranged in the shape of a symbol, for example, a hazard triangle, or can form lettering.

[0096] Of course, the glass fiber 4 can also have regions in which light can exit the glass fiber 4 via the sidewalls such that symbols not connected to one another can be illuminated.

[0097] FIG. 3A depicts a plan view of an alternative composite pane arrangement 100 according to the invention that includes an alternative composite pane 10 according to the invention and a lighting means 20. FIG. 3B depicts a cross-sectional view along the section line A-A through the composite pane 10 of FIG. 3A. The composite pane 10 is configured in this example as a roof panel of a passenger car.

[0098] The composite pane 10 according to the invention includes an outer pane 1 with an interior-side surface II, an inner pane 2 with an exterior-side surface III, and a thermoplastic intermediate layer 3 that bonds the interior-side surface II of the outer pane 1 to the exterior-side surface III of the inner pane 2 via the pane surface. The outer pane 1 and the inner pane 2 are made, for example, of soda lime glass and have, for example, a thickness of 1.5 mm in each case. The thermoplastic intermediate layer 3 is, for example, a three-ply film made of polyvinyl butyral (PVB) with a total thickness of 0.86 mm. Of course, other glass panes or polymeric panes can also be used as the outer pane and the inner pane. Furthermore, the thickness of the outer pane 1 and the inner pane 2 can be adapted to the respective use.

[0099] In this exemplary embodiment, one light-diffusing glass fiber 4 is arranged between the interior-side surface II of the outer pane 1 and the intermediate layer 3. Of course, the glass fiber 4 can also be arranged between the intermediate layer 3 and the exterior-side surface III of the inner pane 2. Alternatively, another intermediate layer (not shown here) can be arranged between the intermediate layer 3 and one of the panes 1,2, wherein the glass fiber 4 is arranged between the two intermediate layers.

[0100] The light-defusing glass fiber 4 has a diameter d of, for example, 200 ?m and is suitable for emitting light via its side wall along its extension length. The light is coupled into the glass fiber 4 via one end face of the glass fiber 4. For this, a lighting means 20 is arranged on one end of the glass fiber 4. The lighting means 20 consists, for example, of a laser diode, which can, for example, couple light into the glass fiber 4 via a reflector. Upon application of a voltage to the laser diode, light is then coupled into the glass fiber 4. The glass fiber 4 then diffuses the light on its surface along its entire extension length such that the glass fiber 4 lights up over its entire extension length.

[0101] In this example, for producing the composite pane 10 according to the invention, the glass fiber 4 is first arranged using a fastening means 5, for example, on the interior-side surface II of the outer pane 1. The fastening means 5 is, for example, an adhesive means 11 and, in this embodiment, a double-sided adhesive tape 13. Here, the double-sided adhesive tape 13 is arranged between the interior-side surface II of the outer pane 1 and the glass fiber 4. The double-sided adhesive tape 13 includes, for example, a transparent carrier film made of a plastic, with the carrier film having, on both sides, a transparent adhesive. The adhesive means 11 is transparent and is hardly discernible to the eye after the lamination of the composite pane 10.

[0102] Of course, the glass fiber 4 can also be fastened on the intermediate layer 3 or on the exterior-side surface III of the inner pane 2 by the adhesive means 11.

[0103] FIG. 3C depicts an enlarged representation of the region Z of a view through the composite pane 10 of FIG. 3A in a plan view of the exterior-side surface I of the outer pane 1. The glass fiber 4 is arranged by a plurality of fastening means 5 along the extension direction of the glass fiber 4. Here, the adhesive means 11 are, for example, rectangular sections of a double-sided adhesive tape 13. During production, the sections of the double-sided adhesive tape 13 are, for example, adhered on the outer pane 1 along a desired contour via the adhesive on one side of the double-sided adhesive tape 13. In a second step, the glass fiber 4 is then fastened with the adhesive on the second side of the double-sided adhesive tape 13. The glass fiber 4 thus fastened is thus fixed stationarily and slippage of the glass fiber 4 during the arranging of the stack sequence of the outer pane 1, intermediate layer 3, and inner pane 2 is reliably avoided.

[0104] During the subsequent lamination of the stack sequence to form the composite pane 10, the outer pane 1 is bonded to the inner pane 2 via the intermediate layer 3. The outer pane 1 and the inner pane 2 are very rigid and non-flexible at the temperatures and pressures customary for this. The intermediate layer 3 is malleable then such that the glass fiber 4 can penetrate into the surface of the intermediate layer 3 and is embedded there. After the lamination, the transparent sections of the adhesive means 11 are hardly visible.

[0105] FIG. 3D depicts an enlarged representation of the region Z of a view through an alternative composite pane 10 of FIG. 3A in a plan view of the exterior-side surface I of the outer pane 1. In contrast to FIG. 3C, the glass fiber 4 is fastened by a strip-shaped fastening means 5 along the extension direction of the glass fiber 4 on the interior-side surface II of the outer pane 1. Here, the fastening means 5 is an adhesive means 11 and, for example, a strip-shaped, double-sided adhesive tape 13. During production, for example, the double-sided adhesive tape 13 is adhered on the outer pane 1 along a desired contour via the adhesive on one side of the double-sided adhesive tape 13. In a second step, the glass fiber 4 is then fastened with the adhesive on the second side of the double-sided adhesive tape 13. The glass fiber 4 thus fastened is thus fixed stationarily and slippage of the glass fiber 4 during the arranging of the stack sequence of the outer pane 1, intermediate layer 3, and inner pane 2 is reliably avoided.

[0106] FIG. 4A depicts a plan view of an alternative composite pane arrangement 100 according to the invention, which includes an alternative composite pane 10 according to the invention and a lighting means 20. FIG. 4B depicts a cross-sectional view along the section line A-A through the composite pane 10 of FIG. 4A. The composite pane 10 of FIG. 4A corresponds substantially to the composite pane 10 of FIG. 3A such that reference is made in the following only to the differences relative to the composite pane 10 of FIG. 4A.

[0107] In this example, for production of the production of the composite pane 10 according to the invention, the glass fiber 4 is first arranged using a fastening means 5, for example, on the interior-side surface II of the outer pane 1. The fastening means 5 is, for example, an adhesive means 11 and, in this embodiment, a single-sided adhesive tape 12. The glass fiber 4 is fastened with the single-sided adhesive tape 12 on the interior-side surface II of the outer pane 1. In other words, the glass fiber 4 is arranged between the outer pane 1 and the single-sided adhesive tape 12. The single-sided adhesive tape 12 includes, for example, a transparent carrier film made of plastic, with the carrier film having a transparent adhesive on one side. The adhesive means 11 is transparent and is hardly discernible to the eye after the lamination of the composite pane 10.

[0108] Of course, the glass fiber 4 can also be fastened on the intermediate layer 3 or on the exterior-side surface III of the inner pane 2 by the adhesive means 11.

[0109] FIG. 4C depicts an enlarged representation of the region Z of a view through the composite pane 10 of FIG. 4A in a plan view of the exterior-side surface I of the outer pane 1. The glass fiber 4 is arranged by a plurality of fastening means 5 along the extension direction of the glass fiber 4. Here, the adhesive means 11 are, for example, rectangular sections of the single-sided adhesive tape 12. During production, the glass fiber 4 is fastened on the outer pane 1 along a desired contour by sections of the single-sided adhesive tape 12. The glass fiber 4 thus fastened is thus fixed stationarily and slippage of the glass fiber 4 during the arranging of the stack sequence of the outer pane 1, intermediate layer 3, and inner pane 2 is reliably avoided.

[0110] During the subsequent lamination of the stack sequence to form the composite pane 10, the outer pane 1 is bonded to the inner pane 2 via the intermediate layer 3. The outer pane 1 and the inner pane 2 are very rigid and non-flexible at the temperatures and pressures customary for this. The intermediate layer 3 is malleable then such that the glass fiber 4 can penetrate into the surface of the intermediate layer 3 and is embedded there. After the lamination, the transparent sections of the adhesive means 11 are hardly visible.

[0111] FIG. 4D depicts an enlarged representation of the region Z of a view through an alternative composite pane 10 of FIG. 4A in a plan view of the exterior-side surface I of the outer pane 1. In contrast to FIG. 4C, the glass fiber 4 is fastened by a strip-shaped fastening means 5 along the extension direction of the glass fiber 4 on the outer pane 1. Here, the fastening means 5 is an adhesive means 11 and, for example, a strip-shaped, single-sided adhesive tape 12. During production, for example, the single-sided adhesive tape 12 is adhered on the outer pane 1 along a desired contour. The glass fiber 4 thus fastened is thus fixed stationarily and slippage of the glass fiber 4 during the arranging of the stack sequence of the outer pane 1, intermediate layer 3, and inner pane 2 is reliably avoided.

[0112] FIG. 5A depicts a plan view of an alternative composite pane arrangement 100 according to the invention, which includes an alternative composite pane 10 according to the invention and a lighting means 20. FIG. 5B depicts a cross-sectional view along the section line A-A through the composite pane 10 of FIG. 5A. The composite pane 10 of FIG. 5A corresponds substantially to the composite pane 10 of FIG. 3A such that reference is made in the following only to the differences relative to the composite pane 10 of FIG. 5A.

[0113] In this example, for production of the composite pane 10 according to the invention, the glass fiber 4 is first connected to the intermediate layer 3 using a fastening means 5. The fastening means 5 is, for example, a cord 14 that is routed through openings 15 of the intermediate layer 3 and encompasses the glass fiber 4 with a region of the intermediate layer 3 between two openings 15 in the form of a loop. The cord 14 is, in this embodiment, for example, a transparent cord made of polyamide with a diameter of 0.1 mm. After the lamination of the composite pane 10, the cord 14 is hardly discernible to the eye.

[0114] FIG. 5C depicts an enlarged representation of the region Z of a view through the composite pane 10 of FIG. 5A in a plan view of the exterior-side surface I of the outer pane 1. Here, the glass fiber 4 is connected to the intermediate layer 3 of the region Z by three fastening means 5 along the extension direction. Here, the fastening means 5 are three cords 14 that are routed in each case through two openings 15 of the intermediate layer 3. The cord 14 forms a loop that fixedly connects the glass fiber 4 to the intermediate layer 3. The loop can, for example, the fixed by knots, fusion points, or gluing points.

[0115] The glass fiber 4 thus fastened is fixed stationarily and slippage of the glass fiber 4 during the arranging of the stack sequence of the outer pane 1, intermediate layer 3, and inner pane 2 is reliably avoided. During the subsequent lamination of the stack sequence to form the composite pane 10, the outer pane 1 is bonded to the inner pane 2 via the intermediate layer 3. The outer pane 1 and the inner pane 2 are very rigid and non-flexible at the temperatures and pressures customary for this. The intermediate layer 3 is malleable then such that the glass fiber 4 can penetrate into the surface of the intermediate layer 3 and is embedded there. After the lamination, the transparent cord 14 is hardly visible.

[0116] FIG. 5D depicts an enlarged representation of the region Z of a view through an alternative composite pane 10 of FIG. 5A in a plan view of the exterior-side surface I of the outer pane 1. In contrast to FIG. 5C, the glass fiber 4 is connected to the intermediate layer 3 by an elongated fastening means 5 along the extension direction of the glass fiber 4. Here, the fastening means 5 is a cord 14 that is stitched to the intermediate layer 4 by a plurality of openings 15. This means that the cord 14 is threaded through two openings 15 in each case, with the glass fiber 4 encircled on one side of the intermediate layer 3. The glass fiber 4 thus fastened is thus fixed stationarily and slippage of the glass fiber 4 during the arranging of the stack sequence of the outer pane 1, intermediate layer 3, and inner pane 2 is reliably avoided.

[0117] FIG. 6 depicts a flowchart of an exemplary embodiment of the method according to the invention for producing a composite pane 10 according to the invention. The method according to the invention includes, for example, the following steps: [0118] a) Preparing a glass fiber 4, a thermoplastic intermediate layer 3, an outer pane 1 with an interior-side surface II, and an inner pane 2 with an exterior-side surface III; [0119] b) Arranging the glass fiber 4 on the intermediate layer 3, on the interior-side surface II of the outer pane 1, or on the exterior-side surface III of the inner pane 2; [0120] c) Arranging the intermediate layer 3 between the outer pane 1 and the inner pane 2; [0121] d) Bonding the interior-side surface II of the outer pane 1 to the exterior-side surface III of the inner pane 2 via the intermediate layer 3 by lamination.

LIST OF REFERENCE CHARACTERS

[0122] 1 outer pane
2 inner pane
3 intermediate layer, thermoplastic intermediate layer
4 glass fiber
5 fastening means
6 side edge
7 masking print
10 composite pane
11 adhesive means
12 single-sided adhesive tape
13 double-sided adhesive tape
14 cord
15 opening
20 lighting means
100 composite pane arrangement
d diameter of the light-diffusing glass fiber 4
A-A section line
Z region
I exterior-side surface of the outer pane 1
II interior-side surface of the outer pane 1
III exterior-side surface of the inner pane 2
IV interior-side surface of the inner pane 2