VEHICLE LAMINATED PANE

Abstract

A vehicle laminated pane, designed as a combined front and roof pane, has a lower and upper edges and two lateral pane edges includes an outer pane with an outer-side surface and an interior-side surface, an inner pane with an outer-side surface and an interior-side surface, and a thermoplastic intermediate layer which connects the outer pane to the inner pane. The vehicle laminated pane has a first region starting from the lower edge, a third region starting from the upper edge, and a second region which connects the first region and the third region, the interior-side surface of the outer pane has an opaque cover print at least in a peripheral edge region of the vehicle laminated pane, and a sun protection coating is applied to the interior-side surface of the outer pane.

Claims

1. A vehicle laminated pane, designed as a combined front and roof pane, with a lower edge and an upper edge and two lateral pane edges at least comprising an outer pane with an outer-side surface and an interior-side surface, an inner pane with an outer-side surface and an interior-side surface and a thermoplastic intermediate layer which connects the outer pane to the inner pane, wherein the vehicle laminated pane has a first region starting from the lower edge, a third region starting from the upper edge, and a second region connecting the first region and the third region, at least in a peripheral edge region of the vehicle laminated pane, the interior-side surface of the outer pane has an opaque cover print, and a sun protection coating is applied to the interior-side surface of the outer pane, and wherein the vehicle laminated pane has a reflection color in reflection at an angle of 60? and a reflection color in reflection at an angle of 8?, the a* color coordinate of each of which has a negative value in the CIE color space and the b* color coordinate of each of which has a negative value in the CIE color space.

2. The vehicle laminated pane according to claim 1, wherein the sun protection coating, starting from the outer pane in the direction of the inner pane, comprises the following layer sequence first dielectric module M1, first silver layer Ag1, second dielectric module M2, second silver layer Ag2, third dielectric module M3, third silver layer Ag3, fourth dielectric module M4.

3. The vehicle laminated pane according to claim 2, wherein the first, second and third silver layers Ag1, Ag2, Ag3 have a relative geometric layer thickness in relation to each other of 0.4<Ag1/Ag3<1.7 and Ag3 or Ag2 is the thickest silver layer, and the first, second, third and fourth dielectric modules M1, M2, M3, M4 have a relative optical layer thickness of M2/M1?1.9, M2/M3>0.8 and M2/M4?1.6.

4. The vehicle laminated pane according to claim 2, wherein the first, second and third silver layers Ag1, Ag2, Ag3 have a relative geometric layer thickness in relation to each other of Ag1/Ag2>1 and Ag1/Ag3>1 and the first, second, third and fourth dielectric modules M1, M2, M3, M4 have a relative optical layer thickness of M2/M1>1, M2/M3>1 and M2/M4>1.

5. The vehicle laminated pane according to claim 1, wherein the interior-side surface of the inner pane has a heat-ray-reflecting coating at least in the third region.

6. The vehicle laminated pane according to claim 1, wherein the thermoplastic intermediate layer in the third region is tinted or colored and optionally also tinted or colored in the second region.

7. The vehicle laminated pane according to claim 1, wherein the interior-side surface of the outer pane additionally has the opaque cover print in a region lying in the second region, said opaque cover print optionally being widened in at least one region into the first region and optionally having at least one recess for a sensor window.

8. The vehicle laminated pane according to claim 7, wherein the thermoplastic intermediate layer is composed of two parts which are welded together at a weld seam, wherein the weld seam is arranged in the region of the second region in which the opaque cover print is additionally arranged when looking through perpendicularly from the outside.

9. The vehicle laminated pane according to claim 1, wherein the opaque cover print is an opaque enamel or an opaque lacquer.

10. The vehicle laminated pane according to claim 1, wherein the opaque cover print is formed from a printing ink which has decomposing properties relative to the sun protection coating.

11. The vehicle laminated pane according to claim 1, additionally comprising a switchable functional element and/or at least one illumination element.

12. A method for producing a vehicle laminated pane according to claim 1, comprising: a) providing an outer pane with an outer-side surface and an interior-side surface, an inner pane with an outer-side surface and an interior-side surface, and a thermoplastic intermediate layer; b) applying an opaque cover print to the interior-side surface of the outer pane at least in a peripheral edge region and applying a sun protection coating to the interior-side surface of the outer pane; c) forming a layer stack at least comprising, in this order, outer pane, thermoplastic intermediate layer and inner pane, and d) connecting the layer stack formed of at least outer pane, thermoplastic intermediate layer and inner pane to form the vehicle laminated pane.

13. The method for producing a vehicle laminated pane according to claim 12, wherein in step b) the opaque cover print is first applied and the sun protection coating is then applied.

14. The method for producing a vehicle laminated pane according to claim 12, wherein in step b) the sun protection coating is first applied and the opaque cover print is then applied, wherein the opaque cover print is formed from a printing ink which has decomposing properties relative to the sun protection coating.

15. A method comprising providing a vehicle laminated pane according to claim 1 as a combined front and roof pane in a transportation vehicle for traffic on land, in the air or in water.

16. The vehicle laminated pane according to claim 6, wherein the dye concentration in the second region decreases in the direction of the first region.

17. The method according to claim 15, wherein the transportation vehicle is a rail vehicle or a motor vehicle.

18. The method according to claim 15, wherein the combined front and roof pane is a combined windshield and roof pane of a passenger car.

Description

[0133] In the drawings:

[0134] FIG. 1 shows a perspective view of an embodiment of a vehicle laminated pane according to the invention,

[0135] FIG. 2 shows a cross-section through the embodiment of the vehicle laminated pane according to the invention shown in FIG. 1,

[0136] FIG. 3 shows a perspective view of a further embodiment of a vehicle laminated pane according to the invention,

[0137] FIG. 4 shows a cross-section through a further embodiment of the vehicle laminated pane according to the invention,

[0138] FIG. 5 shows a cross-section through a further embodiment of the vehicle laminated pane according to the invention,

[0139] FIG. 6 shows a perspective view of a further embodiment of a vehicle laminated pane according to the invention,

[0140] FIG. 7 shows a cross-section through the embodiment of the vehicle laminated pane according to the invention shown in FIG. 6,

[0141] FIG. 8 shows a cross-section through a further embodiment of the vehicle laminated pane according to the invention,

[0142] FIG. 9 shows a cross-section through a further embodiment of the vehicle laminated pane according to the invention,

[0143] FIG. 10 shows a perspective view through a further embodiment of a vehicle laminated pane according to the invention,

[0144] FIG. 11 shows a cross-section through a further embodiment of the vehicle laminated pane according to the invention,

[0145] FIG. 12 shows a cross-section through a further embodiment of the vehicle laminated pane according to the invention,

[0146] FIG. 13 shows a cross-section through a further embodiment of the vehicle laminated pane according to the invention,

[0147] FIG. 14 shows a cross-section through a further embodiment of the vehicle laminated pane according to the invention,

[0148] FIG. 15 shows a cross-section through a further embodiment of the vehicle laminated pane according to the invention,

[0149] FIG. 16 shows a cross-section through a further embodiment of the vehicle laminated pane according to the invention,

[0150] FIG. 17 shows a schematic illustration of the structure of a sun protection coating applied to the outer pane of a vehicle laminated pane according to the invention, and

[0151] FIG. 18 shows a flowchart of an embodiment of the method according to the invention.

[0152] For simplification, the cross-sectional drawings are shown flat in each case. However, as can be seen from the perspective views, the vehicle laminated panes 100 according to the invention shown in cross-section are each curved laminated panes.

[0153] FIG. 1 shows a perspective view of an embodiment of a vehicle laminated pane 100 according to the invention and FIG. 2 shows a cross-section through the embodiment of the vehicle laminated pane 100 according to the invention shown in FIG. 1. The laminated pane 100 shown in FIGS. 1 and 2 is designed as a combined front and roof pane with a lower edge U, an upper edge O and two lateral pane edges S and comprises an outer pane 1 and an inner pane 2, which are connected to one another via a thermoplastic intermediate layer 3. The outer pane 1 has an outer-side surface I and an interior-side surface II, while the inner pane 2 has an outer-side surface III and an interior-side surface IV. The interior-side surface Il of the outer pane 1 and the outer-side surface III of the inner pane 2 face one another.

[0154] The vehicle laminated pane 100 has three regions. A first region A1,

[0155] which extends from the lower edge U and extends in the direction of the upper edge O, a third region A3, which extends from the upper edge O and extends in the direction of the lower edge U, and a second region A2, which connects the first region A1 to the third region A3.

[0156] In the embodiment shown in FIGS. 1 and 2, the interior-side surface Il of the outer pane 1 has an opaque cover print 4, for example formed from an opaque enamel, in a peripheral edge region.

[0157] In this embodiment, the thermoplastic intermediate layer 3 contains PVB, for example, has a thickness of 0.76 mm and is tinted, for example, in the second region A2 and the third region A3, wherein the dye concentration decreases in the second region towards the first region A1.

[0158] The outer pane 1 and the inner pane 2 consist of clear soda lime glass and have, for example, a thickness of 2.1 mm.

[0159] In this embodiment a sun protection coating 5 is arranged on the interior-side surface II of the outer pane 1. The sun protection coating 5 extends over the entire interior-side surface II of the outer pane 1 minus a peripheral frame-shaped region in which the opaque cover print 4 is arranged. This can be achieved, for example, by first applying the sun protection coating over the full area and by then applying an opaque cover print 4 formed from a printing ink with decomposing properties relative to the sun protection coating.

[0160] The sun protection coating 5 comprises, for example, at least three functional silver layers which each have a layer thickness between 5 nm and 20 nm, wherein each functional silver layer is arranged between dielectric modules, for example layers of silicon nitride. The silver layers (Ag1, Ag2, Ag3) of the sun protection coating according to the invention have a relative geometric layer thickness in relation to each other of 0.4<Ag1/Ag3<1.7, wherein Ag2 or Ag3 is the thickest silver layer and the dielectric modules (M1, M2, M3, M4) have a relative optical layer thickness in relation to each other of M2/M1?1.9, M2/M3?0.8 and M2/M4?1.6. The sun protection coating 5 leads to a reduced heating of the vehicle interior and the inner pane 2 due to the reflection of infrared radiation. According to the invention, an energy reflection RE can be >36%, preferably >39%. In addition, with such a sun protection coating 5, a good improved thermal comfort, compared to previously known systems, is simultaneously also achieved in addition to good optical and aesthetic properties of the vehicle laminated pane 100. Both the a* color coordinate and the b* color coordinate of the reflection at an angle of 8? or of 60? are in each case smaller than zero in the vehicle laminated pane 100 shown in FIG. 1 and FIG. 2. The reflection color is therefore neutral to blue/greenish

[0161] It can be seen from FIG. 1 that, in this embodiment, the first region A1 substantially corresponds to the region of the vehicle laminated pane which, in the installed position, corresponds to the front screen, in particular the windshield, and the third region A3 substantially corresponds to the region of the vehicle laminated pane which, in the installed position, corresponds to the roof pane, wherein the second region A2 connects the first region A1 to the third region A3.

[0162] FIG. 3 shows a perspective view of a further embodiment of a vehicle laminated pane 100 according to the invention, wherein this embodiment differs from the embodiment shown in FIG. 1 only in that the first region A1 substantially corresponds to the region which corresponds to a panoramic windshield, which extends, for example, to the B-pillar of the vehicle in the installed position.

[0163] FIG. 4 shows a cross-section through a further embodiment of the vehicle laminated pane 100 according to the invention, wherein the embodiment shown in FIG. 4 differs from the cross-section shown in FIG. 2 only insofar as a heat-ray-reflecting coating 6 is arranged on the interior-side surface IV of the inner pane 2 in the third region A3 and in a partial region of the second region A2.

[0164] In this embodiment it is possible that the vehicle laminated pane 100 can have not only a good energy reflection RE>40%, but, in the third region A3, in which the heat-ray-reflecting coating 6 is arranged and the thermoplastic intermediate layer 3 is tinted dark, also a particularly low total transmitted thermal radiation of TTS<14%. The heat-ray-reflecting coating 6, on the one hand, reduces the emission of thermal radiation through the vehicle laminated pane 100 into the vehicle interior, in particular at high outside temperatures. The heat-ray-reflecting coating 6 can, on the other hand, reduce the emission of thermal radiation from the vehicle interior at low outside temperatures. In addition, the heat-ray-reflecting coating 6 can reduce the transmission of visible light into the vehicle interior. As a result, the room climate of the vehicle interior can be significantly improved and the need to use air conditioning systems can be reduced.

[0165] FIG. 5 shows a cross-section through a further embodiment of the vehicle laminated pane 100 according to the invention, wherein the embodiment shown in FIG. 5 differs from the cross-section shown in FIG. 4 only insofar as the heat-ray-reflecting coating is arranged on the entire interior-side surface IV of the inner pane 2.

[0166] FIG. 6 shows a perspective view of a further embodiment of a vehicle laminated pane 100 according to the invention and FIG. 7 shows a cross-section through the embodiment of the vehicle laminated pane 100 according to the invention shown in FIG. 6. The laminated pane 100 shown in FIGS. 6 and 7 differs from the one shown in FIGS. 1 and 2 only in that the opaque cover print 4 on the interior-side surface Il of the outer pane 1 is arranged not only in a peripheral edge region, but additionally also in a region lying in the second region A2, wherein this region extends as a strip between the lateral pane edges.

[0167] FIG. 8 shows a cross-section through a further embodiment of the vehicle laminated pane 100 according to the invention, wherein the embodiment shown in FIG. 8 differs from the one shown in FIG. 4 in cross-section only insofar as the opaque cover print 4 is arranged on the interior-side surface Il of the outer pane 1 not only in a peripheral edge region, but additionally also in a region lying in the second region A2, wherein this region extends as a strip between the lateral pane edges.

[0168] FIG. 9 shows a cross-section through a further embodiment of the vehicle laminated pane 100 according to the invention, wherein the embodiment shown in FIG. 9 differs from the one shown in cross-section in FIG. 5 only insofar as the opaque cover print 4 is arranged on the interior-side surface II of the outer pane 1 not only in a peripheral edge region but additionally also in a region lying in the second region A2, wherein this region extends as a strip between the lateral pane edges.

[0169] FIG. 10 shows a perspective view of a further embodiment of a vehicle laminated pane 100 according to the invention, which differs from the embodiment shown in FIG. 6 only insofar as the cover print present in a region of the second region is widened in at least one region into the first region and has a recess for a sensor window 7.

[0170] FIG. 11 shows a cross-section through a further embodiment of the vehicle laminated pane 100 according to the invention, wherein the embodiment shown in FIG. 11 differs from the one shown in cross-section in FIG. 7 insofar as the thermoplastic intermediate layer 3 is composed of two parts designated in FIG. 11 with the reference signs 3a and 3b. The first part 3a and the second part 3b are welded together via a weld seam. As can be seen from FIG. 11, the weld seam is arranged, in a view looking through from outside, in the region of the second region A2 in which the opaque cover print 4 is additionally arranged. The first part 3a of the thermoplastic intermediate layer 3 is tinted or colored in the embodiment shown in FIG. 11, and the second part 3b of the thermoplastic intermediate layer is colorless.

[0171] FIG. 12 shows a cross-section through a further embodiment of the vehicle laminated pane 100 according to the invention, wherein the embodiment shown in FIG. 12 differs from the one shown in cross-section in FIG. 11 only insofar as a heat-ray-reflecting coating 6 is arranged on the interior-side surface IV of the inner pane 2 in the third region A3 and in a partial region of the second region A2.

[0172] FIG. 13 shows a cross-section through a further embodiment of the vehicle laminated pane 100 according to the invention, wherein the embodiment shown in FIG. 13 differs from the one shown in cross-section in FIG. 12 only insofar as the heat-ray-reflecting coating is arranged on the entire interior-side surface IV of the inner pane 2.

[0173] FIG. 14 shows a cross-section through a further embodiment of the vehicle laminated pane 100 according to the invention. The embodiment shown in FIG. 14 differs from the one shown in FIG. 2 insofar as the cover print 4, during the production of the vehicle laminated pane 100, was first applied to the inner surface II of the outer pane 1, followed by the sun protection coating 5. Therefore, the sun protection coating 5 is also arranged on a region of the cover print 4. In a peripheral edge region, which is narrower than the peripheral edge region in which the cover print 4 is arranged, no sun protection coating 5 is arranged on the cover print 5 in order to protect the sun protection coating 5 in the vehicle laminated pane 100 against corrosion and damage.

[0174] FIG. 15 shows a cross-section through a further embodiment of the vehicle laminated pane 100 according to the invention. The embodiment shown in FIG. 15 differs from the one shown in FIG. 14 merely insofar as a heat-ray-reflecting coating 6 is arranged on the interior-side surface IV of the inner pane 2 in the third region A3 and in a partial region of the second region A2. It is understood that the heat-ray-reflecting coating 6 can optionally also be arranged on the entire interior-side surface IV of the inner pane 2.

[0175] FIG. 16 shows a cross-section through a further embodiment of the vehicle laminated pane 100 according to the invention. The embodiment shown in FIG. 16 differs from the embodiment shown in FIG. 15 merely in that the opaque cover print 4 is arranged on the interior-side surface Il of the outer pane 1 not only in a peripheral edge region but additionally also in a region lying in the second region A2, and consequently the sun protection coating 5 is also arranged in this region on the opaque cover print 4. It is understood that, again, the heat-ray-reflecting coating 6 can optionally also be arranged on the entire interior-side surface IV of the inner pane 2.

[0176] FIG. 17 shows a schematic illustration of the structure of a sun protection coating 5 applied to the outer pane 1 of a vehicle laminated pane 100 according to the invention. In the embodiment shown, the sun protection coating 5 is applied to the interior-side surface Il of the outer pane 1 as a substrate. The sun protection coating 5 shown contains three transparent functional silver layers Ag1, Ag2 and Ag3, which are in particular the infrared-radiation-reflecting layers. The silver layers can be deposited, for example, by means of sputtering in an argon atmosphere.

[0177] Above, below and between the silver layers Ag1, Ag2 and Ag3 there are arranged dielectric modules M1, M2, M3 and M4 comprising dielectric layers. The dielectric Module M1 is therefore arranged below the first silver layer Ag1 directly on the interior-side surface II of the outer pane 1; the second dielectric module M2 is arranged above the first silver layer Ag1. The first dielectric module M1 can be constructed, for example, starting from the outer pane 1, as a layer sequence of silicon nitride, ZnSnO.sub.x and ZnO layers. The silicon nitride layer can be deposited here, for example, from SiZrAl or SiAl in a nitrogen-containing atmosphere, and the zinc oxide layer can be deposited from ZnAl or ZnAlO in an oxygen-containing atmosphere.

[0178] The sun protection coating 5 contains at least one blocker layer; each functional silver layer Ag1, Ag2, Ag3 is particularly preferably in direct contact with at least one blocker layer B1, B2 and B3 as shown. According to the invention, the blocker layers preferably contain or consist of at least nickel, chromium, titanium or alloys thereof. The blocker layers B (B1, B2, B3) are preferably arranged between at least one functional silver layer and at least one dielectric layer. The blocker layers B provide protection of the functional layer during heating, in particular during the production of the vehicle laminated pane according to the invention.

[0179] FIG. 18 shows an exemplary embodiment of the method according to the invention on the basis of a flow diagram comprising the following steps. [0180] S1 providing an outer pane 1 with an outer-side surface I, an interior-side surface II, an inner pane 2 with an outer-side surface III and an interior-side surface IV, and a thermoplastic intermediate layer 3; [0181] S2 applying an opaque cover print 4 to the interior-side surface Il of the outer pane 1 at least in a peripheral edge region and applying a sun protection coating 5 to the interior-side surface II of the outer pane 1; [0182] S3 forming a layer stack at least comprising, in this order, outer pane 1, thermoplastic intermediate layer 3 and inner pane 2; and [0183] S4 connecting the layer stack formed of at least outer pane 1, thermoplastic intermediate layer 3 and inner pane 2 to form the vehicle laminated pane 100.

[0184] In one embodiment, glass panes are used as outer pane 1 and as inner pane 2. In a preferred embodiment of the method, a sun protection coating 5 with at least three functional silver layers Ag1, Ag2 and Ag3 and the at least four dielectric modules M1, M2, M3 and M4 is applied to the interior-side surface II of the outer pane 1 by means of magnetic-field-assisted sputtering.

[0185] The vehicle laminated pane 100 that can be produced by means of the method according to the invention has a lower edge U, an upper edge O and two lateral pane edges S. In addition, the vehicle laminated pane 100 has a first region A1 starting from the lower edge U, a third region A3 starting from the upper edge O, and a second region A2 connecting the first region A1 and the third region A3.

[0186] In a preferred embodiment of the method according to the invention, in step S2 the opaque cover print 4 is first applied and then the sun protection coating 5 is applied. In this way, for example, the embodiments shown in FIG. 14, FIG. 15 and FIG. 16 can be produced.

[0187] In an alternative preferred embodiment of the method according to the invention, in step S2 the sun protection coating 5 is applied first and then the opaque cover print 4 is applied, wherein the opaque cover print 4 is formed from a printing ink which has decomposing properties relative to the sun protection coating 5. In this way, for example, the embodiments shown in FIG. 2, FIG. 4, FIG. 5, FIG. 7, FIG. 8, FIG. 9, FIG. 11, FIG. 12 and FIG. 13 can be produced

[0188] Optionally, the method according to the invention can comprise the additional step of applying a heat-ray-reflecting coating to the interior-side surface IV of the inner pane 2 at least in the third region A3.

[0189] The invention is illustrated by means of the following examples according

[0190] to the invention and comparative examples not according to the invention.

Examples

[0191] All optical, aesthetic and energy properties of the laminated panes according to examples and comparative examples were measured in a laminated state. In the examples and comparative examples, the sun protection coating 5 was applied to the interior-side surface Il of a clear outer pane 1 (example Planiclear) and laminated with a thermoplastic intermediate layer 3 and an inner pane 2. A tinted PVB film was used in the intermediate layer. A Low-E coating was applied on the interior-side surface IV of a dark-tinted inner pane 2 (example VG10). The Low-E coating had an emissivity of 30%. The Low-E coating was based on an ITO (indium tin oxide) layer encapsulated between dielectric layers (Si.sub.3N.sub.4, SiO.sub.x). The examples and comparative examples had the same basic structure described, but differed in the sun protection coatings used.

[0192] Examples 1 to 10 according to the invention and comparative examples not according to the invention were produced as a laminated pane with the stated sun protection coatings.

[0193] For each example and comparative example, the stack structure of the sun protection coating (layers and layer thicknesses), as well as the optical properties of the coating in the finished laminated pane are indicated.

[0194] The layer sequences and layer thicknesses of the sun protection coatings according to examples 1 to 10 according to the invention are shown in Table 1a. In comparison, the comparative examples 1 to 4 not according to the invention are described in Table 1b. The relative layer thicknesses of the silver layers and the dielectric modules, as well as the values of the optical and energy properties are shown in Table 2a for examples 1 to 10 according to the invention and in Table 2b for comparative examples 1 to 4 not according to the invention. All layer thicknesses of the silver layers and the layers of the modules are indicated as geometric layer thicknesses. The relative layer thicknesses of the silver layers, indicated as thickness ratios Ag2/Ag1, Ag2/Ag3 and Ag1/Ag3, relate to the geometric layer thicknesses. The optical layer thicknesses were used for the relative layer thicknesses of the dielectric modules, given as thickness ratios M2/M1, M2/M3 and M2/M4.

[0195] The following abbreviations are used: [0196] RE energy reflection [%] [0197] TL visible light transmission [%] [0198] TTS total transmitted thermal radiation [%]

[0199] TE total transmitted energy [%] [0200] RL 8? visible reflection at a viewing angle of 8? [%] [0201] a*, b* color coordinates in CIE color space (International Commission on Illumination), in each case measured in reflection at 60? and at 8? [0202] ?a*, ?b* difference of the color coordinates during measurement in reflection at 60? and at 8? [0203] Color R* color impression of the external reflection color perceived by the observer of the laminated pane in each case in reflection at 60? and at 8?

[0204] The values for light transmission (TL) and reflection (RL) refer to illuminant A, i.e., the visible portion of sunlight at a wavelength of 380 nm to 780 nm.

TABLE-US-00001 TABLE 1a Examples 1-10 layer structures of the sun protection coating Layer sequence Layer Layer thinckness [nm] according to the example Outer material according to the invention pane 1 Glass #1 #2 #3 #4 #5 #6 #7 #8 #9 #10 M1 SiZrN.sub.x 16.1 15.7 15.7 16.4 8 9.8 7.3 10.6 9.8 10.8 ZnSnO.sub.x 8 8 8 8 8 8 7.5 7.5 7.5 7.7 ZnO 10 10 10 10 10 10 10.8 11 11 11.3 Ag1 Ag 8.5 9.3 10 9.4 8 10.6 11.6 11.8 10.4 11.9 B1 NiCr 0.2 0.2 0.2 0.2 0.2 0.2 0.6 0.6 0.3 0.1 M2 ZnO 10 10 10 10 10 10 12.2 15 15 13.3 SiZrN.sub.x 10 10 10 10 10 20.3 16.6 16 15.5 16.7 Si.sub.3N.sub.4 21.8 22.3 22.3 22.8 13.2 15 22.2 12.4 6.5 14.7 SiZrN.sub.x 10 10 10 10 10 15 6.2 10.9 16.5 17.1 ZnSnO.sub.x 8 8 8 8 8 8 7.5 9.3 9.3 8.7 ZnO 10 10 10 10 10 10 12.2 14 14 12.4 Ag2 Ag 10.5 11.4 12 11.8 10.2 12 12.6 14.2 15 14.4 B2 NiCr 0.2 0.2 0.2 0.2 0.2 0.2 0.8 0.8 0.3 0.1 M3 ZnO 10 10 10 10 10 10 10.8 13 13 12.8 Si.sub.3N.sub.4 15 15 15 15 15 15 24.4 5.4 10.5 14.9 SiZrN.sub.x 31.1 31.3 31.3 33.1 28 20.9 9.9 13.8 16.6 17.5 ZnSnO.sub.x 8 8 8 8 8 8 7.5 9.0 9 7.1 ZnO 10 10 10 10 10 10 10.8 13 13 12.9 Ag3 Ag 13.3 13.9 14 17.6 15.7 10.3 10.6 9.7 9.9 10.4 B3 NiCr 0.2 0.2 0.2 0.2 0.2 0.2 1.5 0.5 1.3 0.1 M4 ZnO 10 10 10 10 10 10 12.2 15 15 15.5 Si.sub.3N.sub.4 14.7 15.2 15.2 17 10.2 25.4 15.3 3.1 19.5 20.6

TABLE-US-00002 TABLE 1b Comparative examples 1-4 layer structures of the sun protection coating Layer thicknesses [nm] according to the comparative example Layer sequence Layer material #1 #2 #3 #4 Outer pane 1 Glass M1 SiZrN.sub.x 22 16.4 9.8 9.8 ZnSnO.sub.x 8 8 8 8 ZnO 11 10 10 10 Ag1 Ag 8.5 15 10.6 12.9 B1 NiCr 0.2 0.2 0.2 0.2 M2 ZnO 11 10 10 10 SiZrN.sub.x 10 10 8 14.7 Si.sub.3N.sub.4 21.8 21.8 8 15 SiZrN.sub.x 10 10 8 15 ZnSnO.sub.x 8 8 8 8 ZnO 11 10 10 10 Ag2 Ag 10.5 12 12.5 10.6 B2 NiCr 0.2 0.2 0.2 0.2 M3 ZnO 11 11 10 10 Si.sub.3N.sub.4 15 15 15 15 SiZrN.sub.x 31.1 22 30.6 19 ZnSnO.sub.x 8 8 8 8 ZnO 11 10 10 10 Ag3 Ag 13.3 10.5 11.7 8.9 B3 NiCr 0.2 0.2 0.2 0.2 M4 ZnO 11 10 10 10 Si.sub.3N.sub.4 14.7 14.7 25.4 25

TABLE-US-00003 TABLE 2a Examples 1-10 thickness ratios and optical properties in the laminate Thickness ratios and optical properties according to example #1 #2 #3 #4 #5 #6 #7 #8 #9 #10 Thickness ratios Ag2/Ag1 1.23 1.23 1.20 1.25 1.27 1.10 1.10 1.20 1.40 1.20 Ag2/Ag3 0.79 0.82 0.86 0.67 0.65 1.20 1.20 1.50 1.50 1.40 Ag1/Ag3 0.64 0.67 0.71 0.53 0.51 1.00 1.10 1.20 1.10 1.10 M2/M1 1.99 2.02 2.03 2.00 2.35 2.80 3.0 2.70 2.70 2.80 M2/M3 0.92 0.92 0.93 0.91 0.85 1.20 1.20 1.40 1.30 1.3 M2/M4 2.95 2.92 2.92 2.74 3.19 2.40 2.90 4.50 2.40 3.60 Optical properties TL 6.2 6.2 6.1 5.5 5.6 6.3 5.2 5.2 5.40 6.2 RL 8? 11.7 12.1 12.0 18.9 17.4 11.9 10.7 12.9 14.0 13.8 a*R 8? ?4.1 ?3.7 ?5.3 ?4.4 ?4.6 ?4.4 ?4.6 ?1.6 ?5.6 ?5.2 b*R 8? ?10.8 ?11.5 ?11.3 ?10.6 ?6.6 ?10.8 ?10.3 ?10.5 ?8.9 ?8.5 a*R 60? ?3.4 ?3.8 ?4.1 ?2.7 ?3.0 ?4.5 ?5.1 ?2.8 ?2.0 ?3.3 b*R 60? ?7.5 ?6.6 ?6.0 ?8.4 ?2.7 ?7.2 ?7.5 ?6.2 ?8.4 ?8.3 Color R*8? blue blue blue blue blue blue blue blue blue blue Color blue blue blue blue neutral blue blue blue blue blue R*60? ? a*R 0.7 ?0.1 1.2 1.7 1.6 ?0.1 ?0.5 ?1.2 3.6 1.9 (8? vs. 60?) ? b*R 3.3 4.9 5.3 2.2 4.0 3.6 2.8 4.3 0.4 0.2 (8? vs. 60?) RE 44.0 44.8 47.6 51.0 49.2 45.2 41.7 44.4 44.1 46.7 TE 3.0 2.8 2.7 2.4 2.4 3.0 2.7 2.6 2.8 3.2 TTS 13.6 13.3 12.6 11.7 12.1 13.4 13.8 13.2 13.4 13.4

TABLE-US-00004 TABLE 2b Comparative examples 1-4 thickness ratios and optical properties in the laminate Thickness ratios and optical properties according to comparative example #1 #2 #3 #4 Thickness ratios Ag2/Ag1 1.2 0.8 1.2 0.8 Ag2/Ag3 0.8 1.1 1.1 1.2 Ag1/Ag3 0.6 1.4 0.9 1.4 M2/M1 1.7 2.0 1.9 2.6 M2/M3 0.9 1.1 0.7 1.2 M2/M4 2.9 3.0 1.5 2.2 Optical properties TL 6.1 6.1 5.7 6.5 RL 8? 13.3 11.1 18.9 9.2 a*R 8? ?14.1 2.2 ?0.6 ?4.3 b*R 8? 2.3 7.2 0.3 ?14.1 a*R 60? ?13.0 ?3.0 9.7 2.3 b*R 60? ?2.9 9.7 0.6 ?8.2 Color R*8? yellow-green orange neutral blue Color R*60? green yellow red purple ? a*R (8? vs. 60?) 1.1 ?5.2 10.3 7.1 ? b*R (8? vs. 60?) ?5.2 2.5 0.3 6.2 RE 38.8 44.8 52.4 46.2 TE 3.6 3.1 2.4 3.0 TTS 15.3 13.6 12.7 13.2

[0205] Examples 1 to 5 according to the invention have silver layers Ag1, Ag2 and Ag3 with a relative geometric layer thickness of 0.4<Ag1/Ag3<0.9 and 0.5<Ag2/Ag3<1.0, wherein Ag3 is the thickest silver layer and the dielectric modules (M1, M2, M3, M4) have a relative optical layer thickness in relation to each other of M2/M1?1.9, M2/M3?0.8 and M2/M4?1.6. Examples 1 to 5 have an improved energy reflection RE.

[0206] For examples 6 to 10 according to the invention, a relative geometric layer thickness of 0.6<Ag1/Ag3<1.7 applies to silver layers Ag1, Ag2 and Ag3, wherein Ag2 is the thickest silver layer and the dielectric modules (M1, M2, M3, M4) have a relative optical layer thickness in relation to each other of M2/M1?2, M2/M3>1 and M2/M4?2. These laminated panes are particularly advantageous with regard to the smallest possible angle-dependent color deviations Aa in reflection.

[0207] Further examples:

[0208] The layer sequences of the sun protection coatings and the layer thicknesses of the further examples A to E of vehicle laminated panes according to the invention are shown in Table 3a. The relative layer thicknesses of the silver layers and the dielectric modules, as well as the values for the optical and energy properties are reproduced in Table 3b and Table 3c.

TABLE-US-00005 TABLE 3a Layer thicknesses [nm] according to the Layer example according to the invention Layer sequence material Example Example Example Example Example Outer pane 1 Glass A B C D E First dielectric SiNx 8.0 10.6 9.0 16.4 7.9 module M1 ZnSnOx 8.0 8.0 8.0 8.0 8.1 ZnO 10.0 10.0 10.0 10.0 12.3 First silver layer Ag1 Ag 15.8 19.0 16.5 17.8 13.3 Blocker layer NiCr 0.2 0.2 0.2 0.2 0.2 Second dielectric ZnO 10.0 10.0 10.0 10.0 15.0 module M2 SiNx 52.0 39.2 52.0 46.0 37.9 ZnSnOx 8.0 8.0 8.0 8.0 9.3 ZnO 10.0 10.0 10.0 10.0 13.5 Second silver layer Ag 12.3 10.6 14.3 10.8 12.1 Ag2 Blocker layer NiCr 0.2 0.2 0.2 0.2 0.8 Third dielectric ZnO 10.0 10.0 10.0 10.0 13.0 module M3 SiNx 38.5 21.5 39.5 27.0 30.5 ZnSnOx 8.0 8.0 8.0 8.0 9.1 ZnO 10.0 10.0 10.0 10.0 14.2 Third silver layer Ag3 Ag 9.5 10.0 8.5 8.3 9.9 Blocker layer NiCr 0.2 0.2 0.2 0.2 0.2 Fourth dielectric ZnO 10.0 10.0 10.0 10.0 16.8 module M4 SiNx 22.5 20.0 35.6 20.3 18.7

TABLE-US-00006 TABLE 3b Relative layer thicknesses in the sun protection coating of the produced laminated panes of examples A to E A B C D E Ag1/Ag2 1.28 1.79 1.15 1.65 1.10 Ag2/Ag3 1.29 1.06 1.68 1.30 1.22 Ag1/Ag3 1.66 1.90 1.94 2.14 1.34 M2/M1 3.12 2.36 3.00 2.16 2.57 M2/M3 1.21 1.37 1.19 1.36 1.13 M2/M4 2.47 2.24 1.75 2.45 2.30

TABLE-US-00007 TABLE 3c Energy and optical parameters of the laminated panes from examples A to E A B C D E TL 5.4 5.2 5.6 5.3 6.2 RL1 20.9 20.0 19.3 20.5 11.8 a*R 8? ?0.9 ?12.6 ?8.5 ?10.0 ?5.0 b*R 8? ?9.8 ?4.6 ?18.8 ?11.1 ?10.5 RL 60? 21.5 22.0 18.9 20.9 15.5 a*R 60? ?3.2 ?3.3 ?3.2 ?4.2 ?3.3 b*R 60? ?8.2 ?6.9 ?18.9 ?12.4 ?8.4 RE 45.6 50.7 47.6 48.5 45.3 TTS 13.7 12.2 13.2 12.9 13.8 Ext color blue green blue green blue Color at 60? blue blue blue blue blue

[0209] The laminated panes of examples 1 to 10 and A to E are improved with respect to energy properties, thermal and visual comfort and at the same time with respect to aesthetic appearance and further optimized compared to known laminated panes with sun protection coatings. The energy reflection of RE>39% was able to be achieved. With such a sun protection coating in conjunction with a heat-ray-reflecting coating, laminated panes can be provided which can additionally have a particularly low total transmitted thermal radiation (TTS) of less than 14%, wherein at the same time an optimal aesthetic appearance can be achieved without undesired hues in the reflection of the laminated pane. In particular, undesired red and yellow reflections or cloudiness of the laminated pane can be avoided. According to the invention, substantially a constant, desired color reflection of the laminated pane can be achieved independently of the viewing angle.

[0210] The laminated panes of examples 1 to 10 and A to E have a reflection color in reflection at an angle of 60? and a reflection color at an angle of 8?, the color coordinate a* of each of these having a negative value in the CIE color space, and the color coordinate b* of each of these having a negative value in the CIE color space.

List Of Reference Signs

[0211] 100 Vehicle laminated pane [0212] 1 Outer pane [0213] 2 Inner pane [0214] 3 Thermoplastic intermediate layer [0215] 3a First part of the thermoplastic intermediate layer [0216] 3b Second part of the thermoplastic intermediate layer [0217] 4 Opaque cover print [0218] 5 Sun protection coating [0219] 6 Heat-ray-reflecting coating [0220] 7 Sensor window [0221] A1 First region [0222] A2 Second region [0223] A3 Third region [0224] I Outer-side surface of 1 [0225] II Interior-side surface of 1 [0226] Outer-side surface of 2 [0227] IV Interior-side surface of 2 [0228] Ag1 First silver layer [0229] Ag2 Second silver layer [0230] Ag3 Third silver layer [0231] M1 First dielectric module [0232] M2 Second dielectric module [0233] M3 Third dielectric module [0234] M4 Fourth dielectric module [0235] B Blocker layer [0236] B1 First blocker layer [0237] B2 Second blocker layer [0238] B3 Third blocker layer