CN117183497A - Vehicle laminated glass with inner surface coated with film and heated - Google Patents
Vehicle laminated glass with inner surface coated with film and heated Download PDFInfo
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- CN117183497A CN117183497A CN202311151590.3A CN202311151590A CN117183497A CN 117183497 A CN117183497 A CN 117183497A CN 202311151590 A CN202311151590 A CN 202311151590A CN 117183497 A CN117183497 A CN 117183497A
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- 239000011521 glass Substances 0.000 claims abstract description 85
- 238000010438 heat treatment Methods 0.000 claims abstract description 83
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- 238000003466 welding Methods 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
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- 229910052751 metal Inorganic materials 0.000 claims description 4
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
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Abstract
The invention provides a vehicle laminated glass with an inner surface coated with a film, which comprises high-pressure heating glass and low-pressure heating glass, wherein the high-pressure heating glass can control the voltage between 18V and 36V; the low-pressure heating glass can control the voltage below 14V. The invention not only has heat insulation performance, but also has heat preservation function, so that the product is more green and saves energy.
Description
Technical Field
The invention belongs to the field of automobile glass, and particularly relates to an inner surface coating heating vehicle laminated glass.
Background
At present, many enterprises are conducting research on electrically heated coated laminated glass, and it is known that the prior art relates to vehicle windshields which are laminated by bonding a single glass window to another single glass window by a transparent plastic such as polyvinyl butyral (PVB), and a conductive film layer is arranged on one glass. Wherein the conductive film layer is connected to at least one conductive strip, typically a tin-containing silver conductor solution, printed and fired, hereinafter referred to as a "busbar". Sometimes, a metal foil strip containing aluminum, copper and the like is also arranged on the bus bar, so that the effect of reducing resistance is achieved, and the loss of voltage at the place is avoided. The bus is connected with the positive electrode and the negative electrode of the power supply, so that the film layer is uniformly heated.
However, the heating of the wiper area is generally performed by using an enameled wire or a tungsten wire which is arranged on one surface of the PVB through related equipment, and then connecting the anode and the cathode in parallel to the whole circuit. The whole operation process is complex, special equipment and relevant process personnel are needed to be input, the cost is high, the glass has no heat preservation function, and the comfort of passengers is poor.
Disclosure of Invention
In view of the above, the present invention aims to provide an inner surface coating film heating vehicle laminated glass to solve the above problems.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
the inner surface coating heating vehicle laminated glass comprises high-pressure heating glass and low-pressure heating glass, wherein the high-pressure heating glass can control the voltage between 18V and 36V; the low-pressure heating glass can control the voltage below 14V.
Further, the high-pressure heating glass sequentially comprises an outer glass substrate, a second shielding layer, a second conductive layer, an intermediate layer, an inner glass substrate, a first conductive layer, a first conductive belt and a first shielding layer;
wherein the inner glass substrate, the first conductive layer, the first conductive tape and the first shielding layer form a high-voltage independent heating module.
Further, the first shielding layer is provided with a plurality of hollow areas, and the number of the hollow areas is 1 or more; the fretwork district can let first conductive strip part expose, the fretwork district can set up external joint and realize the electricity and connect.
Further, the external connection type connector comprises a first connecting terminal, a first converging terminal and a first input terminal, wherein the first connecting terminal and the first input terminal are electrically connected through the first converging terminal, the first connecting terminal is connected with a first conductive belt in the range of the hollowed-out area in a welding mode, and the first input terminal is connected to a power supply.
Further, the first bus terminal is provided with an insulating material for protection from electrical connection with other metal devices outside the invention.
Further, the edge of the first conductive layer, which is close to the periphery of the glass, is also provided with a first edge film removing area for removing 5-20mm of film; the first conductive layer is also provided with a first local film removing area, and a first local shielding layer is further arranged on the first conductive layer around the first local film removing area.
Further, the low-voltage heating glass sequentially comprises an outer glass substrate, a second shielding layer, a second conductive belt, an intermediate layer, an inner glass substrate, a first conductive layer, a first conductive belt and a first shielding layer;
wherein the outer glass substrate, the second shielding layer, the second conductive layer and the second conductive belt form a low-voltage main heating module; the inner glass substrate, the first conductive layer, the first conductive belt and the first shielding layer form a low-voltage auxiliary heating module; the first shielding layer is provided with a plurality of hollow areas;
further, the first conductive layer of the low-pressure heating glass is further provided with a first local film removing area, and a first local shielding layer is further arranged on the first conductive layer around the first local film removing area.
Further, a second partial film removing area is arranged on the second conductive layer of the low-voltage main heating module, and a second partial shielding layer is further arranged on the second conductive layer around the second partial film removing area;
the upper side and the lower side of the second conductive layer are also provided with a second connecting terminal, a second converging terminal and a second input terminal; the second connecting terminal and the second input terminal are electrically connected through a second bus terminal, the second connecting terminal is connected with a second conductive belt in the range of the hollowed-out area in a welding mode, and the second input terminal is connected to a power supply.
Further, two first conductive strips are arranged below the first conductive layer of the low-voltage auxiliary heating module, each first conductive strip is connected with a first connecting terminal, the first connecting terminals and the first input terminals are electrically connected through a first confluence terminal, and the first input terminals are connected to a power supply.
Compared with the prior art, the inner surface coating heating vehicle laminated glass has the following advantages:
(1) According to the vehicle laminated glass with the inner surface coated with the film and heated, the first conductive layer and the second conductive layer are arranged, so that the product has heat insulation performance, a heat preservation function and is more green and energy-saving.
(2) According to the vehicle laminated glass with the inner surface coated and heated, the voltage can be controlled below 36V safety voltage through screening the performance of the first conductive layer, the vehicle laminated glass has the characteristics of high heating speed and good heat preservation performance, the glass can be heated in winter in a heat conduction mode, and meanwhile, heat can be emitted to the space in the vehicle in a heat radiation mode, so that the customer experience is more perfect.
(3) According to the vehicle laminated glass with the inner surface coated with the film and heated, the low-pressure heating glass replaces the traditional equipment and material investment of wire clamping, enamelled wires and the like by arranging the low-pressure auxiliary heating module, so that the production cost is greatly reduced; in addition, the process related by the invention has no special process, does not need equipment upgrading, is suitable for most automobile glass manufacturers, is simple to operate, and is beneficial to mass production.
(4) According to the vehicle laminated glass with the inner surface coated with the film and the heating, the first shielding layer and the second shielding layer are arranged, so that the first conductive belt and the second conductive belt are basically not exposed, and the product is attractive and elegant.
(5) According to the vehicle laminated glass with the inner surface coated and heated, all voltages are safe voltages, and the phenomenon of ground leakage can be effectively prevented by arranging the edge film removing area and the first shielding layer, so that the product is safer.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a cross-sectional view of a high pressure heated glass according to an embodiment of the present invention;
FIG. 2 is an interior view of a high pressure heated glass vehicle in accordance with an embodiment of the present invention;
FIG. 3 is a partial view of a high pressure heated glass small end according to an embodiment of the present invention;
FIG. 4 is a partial view of a high pressure heated glass big end according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a low pressure heated glass according to an embodiment of the present invention;
FIG. 6 is an interior view of a low pressure heated glass vehicle in accordance with an embodiment of the present invention;
FIG. 7 is a schematic diagram of a low pressure main heating module according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a low pressure auxiliary heating module according to an embodiment of the invention for removing a first shielding layer;
fig. 9 is an elevation view of a low pressure heated glass in accordance with an embodiment of the present invention.
Reference numerals illustrate:
1. an outer glass substrate; 2. an inner glass substrate; 3. an intermediate layer; 4. a second shielding layer; 5. a second conductive layer; 6. a first conductive layer; 7. a first conductive strip; 8. a first shielding layer; 9. a first localized film removal zone; 10. a first edge membrane removal zone; 11. hollow areas; 12. a first connection terminal; 13. a first bus terminal; 14. a first input terminal; 15. a second connection terminal; 16. a second bus terminal; 17. a second input terminal; 18. a second partial shielding layer; 19. a second partial removal zone; 20. a second edge membrane removal zone; 21. a second conductive strip; 22. a first partial shielding layer; A. a low pressure main heating module; B. a low pressure auxiliary heating module; C. high pressure independent heating module.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
The inner surface coating heating vehicle laminated glass comprises an outer glass substrate 1, an intermediate layer 3 and an inner glass substrate 2, and is tightly connected; wherein, the inner side surface of the inner glass substrate 2 is sequentially provided with a first conductive layer 6, a first conductive belt 7 and a first shielding layer 8;
the material of the middle layer 3 is one of PVB, SGP, EVA, PP, PU, PMMA;
further, laminated glass is classified into high-pressure heating glass capable of controlling voltage between 18V and 36V and low-pressure heating glass; the low-pressure heating glass can control the voltage below 14V.
High pressure heating of glass as shown in fig. 1-4:
further, the high-pressure heating glass sequentially comprises an outer glass substrate 1, a second shielding layer 4, a second conductive layer 5, an intermediate layer 3, an inner glass substrate 2, a first conductive layer 6, a first conductive belt 7 and a first shielding layer 8;
preferably, the second conductive layer 5 is one of an online Low-E and an offline Low-E, ITO, AZO, and plays a role of heat insulation; the second shielding layer 4 is positioned on one side of the second conductive layer 5, which is close to the outer glass substrate 1, and is used for shielding the edge of the second conductive layer 5, so that the effect of attractive appearance is achieved; when the second conductive layer 5 is off-line Low-E, the edge part is required to be removed by 10 mm-20 mm to prevent oxidation;
wherein the inner glass substrate 2, the first conductive layer 6, the first conductive belt 7 and the first shielding layer 8 form a high-voltage independent heating module;
preferably, the first conductive layer 6 is one of a wire Low-E film, an EA film, an ITO film and an AZO film, and the square resistance is 2-18Ω/≡ (, preferably 3-8Ω/≡); the film layer is characterized in that the film layer can be exposed in the air for a long time for use;
the first conductive belt 7 is made of one or two or more alloy materials of gold, silver, copper, aluminum, tin, iron and nickel; the first conductive strip 7 and the first shielding layer 8 are manufactured by a mimeograph process or a digital printing process;
further, the first shielding layer 8 is provided with a plurality of hollowed-out areas 11, and the number of the hollowed-out areas 11 is 1 or more; the hollowed-out area 11 can expose part of the first conductive strip 7, and the hollowed-out area 11 can be provided with an external connector to realize electrical connection, in particular. The hollow area 11 can be electrically connected in a welding manner through the first connecting terminal 12.
Further, the external connection connector comprises a first connection terminal 12, a first confluence terminal 13 and a first input terminal 14, wherein the first connection terminal 12 and the first input terminal 14 are electrically connected through the first confluence terminal 13, the first connection terminal 12 is connected with the first conductive strip 7 in the range of the hollowed-out area 11 in a welding mode, and the first input terminal 14 is connected to a power supply.
Further, the first bus terminal 13 is protected from electrical connection with other metal devices other than the present invention by an insulating material.
Furthermore, the edge of the first conductive layer 6 near the periphery of the glass is also provided with a first edge film removing area 10, and the film is removed by 5-20mm in a laser or grinding wheel mode for edge insulation; the first conductive strip 7 is positioned in the range of the first conductive layer 6 to avoid chromatic aberration; the printing effect of the film-coated region and the printing of the film-removed region are greatly different due to the influences of factors such as surface roughness, light transmittance and the like, so that the printing on the same surface is required to be performed without color difference.
The first conductive layer 6 is further provided with a first local film removing area 9, so that signal areas such as a rain sensor, a camera, an ADAS and an RFID are subjected to film removing, and signal attenuation is prevented.
Low pressure heating of glass as shown in fig. 5-9;
the low-voltage heating glass sequentially comprises an outer glass substrate 1, a second shielding layer 4, a second conductive layer 5, a second conductive belt 21, an intermediate layer 3, an inner glass substrate 2, a first conductive layer 6, a first conductive belt 7 and a first shielding layer 8;
the middle layer 3 is positioned between the low-pressure main heating module and the low-pressure auxiliary heating module and plays a role in connection. The low-pressure main heating module is mainly used for heating a main visual area (a transparent area), and the low-pressure auxiliary heating module is mainly used for heating a wiper area (a big-end non-transparent area, namely a position area where a wiper is located);
wherein the outer glass substrate 1, the second shielding layer 4, the second conductive layer 5 and the second conductive strip 21 form a low-voltage main heating module; electrically connected to the second conductive tape 21 through the second connection terminal 15;
the second conductive layer 5 is off-line Low-E, has a heat insulation effect and conductivity, and has a heating effect when being electrified; the surface square resistance of the second conductive layer 5 should be less than or equal to 0.9Ω/≡ (because of low voltage, generally below 14V, the resistance of the film layer must be reduced to generate larger current, and a certain power is reached, so as to achieve heating effect); the second shielding layer 4 is located at one side of the second conductive layer 5 close to the outer glass substrate 1, and is used for shielding the edge of the second conductive layer 5, so as to play an attractive role.
The second conductive strip 21 is made of one or two or more alloy materials selected from gold, silver, copper, aluminum, tin, iron and nickel; the second conductive strip 21 and the second shielding layer 4 are manufactured by a mimeograph process or a digital printing process;
the edge of the second conductive layer 5 near the periphery of the glass is also provided with a second edge film removing area 20, and the film 5-20mm is removed by adopting a laser or grinding wheel mode, so that the purpose of edge insulation and film oxidation prevention is achieved. The second conductive strip 21 should be located within the range where the second conductive layer 5 is disposed, so as to avoid chromatic aberration.
The second conductive layer 5 is further provided with a second partial film removing area 19 for removing films from signal areas such as a rain sensor, a camera, an ADAS, an RFID and the like, and preventing attenuation of signals.
The inner glass substrate 2, the first conductive layer 6, the first conductive belt 7 and the first shielding layer 8 form a low-voltage auxiliary heating module; the first connecting terminal 12 is connected with the first conductive strip 7 in the range of the hollowed-out area 11 in a welding mode, and the first input terminal 14 is connected to a power supply; the first shielding layer 8 is provided with a plurality of hollow areas 11;
the first conductive layer 6 is one of an online Low-E film, an EA film, an ITO film and an AZO film, and the square resistance is 2-18Ω/≡and preferably 5-10Ω/≡;
further, the first conductive layer 6 of the low-voltage heating glass is further provided with a first local film removing area 9, and a first local shielding layer 22 is further arranged on the first local film removing area 9.
Further, the second conductive layer 5 of the low-voltage main heating module is provided with a second local touch area, and the second local film removing area 19 is provided with a second local shielding layer 18;
the upper side and the lower side of the second conductive layer 5 are also provided with a second connecting terminal 15, a second confluence terminal 16 and a second input terminal 17; the second connection terminal 15 and the second input terminal 17 are electrically connected through a second bus terminal 16, the second connection terminal 15 is connected with a second conductive strip 21 within the hollow area 11 through a welding mode, and the second input terminal 17 is connected to a power supply.
Further, two first conductive strips 7 are arranged below the first conductive layer 6 of the low-voltage auxiliary heating module, each first conductive strip 7 is connected with one first connecting terminal 12, the first connecting terminals 12 and the first input terminals 14 are electrically connected through the first bus terminals 13, and the first input terminals 14 are connected to a power supply.
The low pressure auxiliary heating module is substantially similar to the high pressure heating module in process, but has a formal difference: 1) A low-voltage auxiliary heating module, wherein the upper-lower spacing of the first conductive belt 7 heated by the wiper area is smaller than or equal to the left-right minimum spacing of adjacent points (aiming at preventing hot spots), and the high-voltage heating module is not involved; 2) The hollow areas 11 of the low-pressure auxiliary heating module are all arranged on the big head of the glass, so that the windscreen wiper area can be conveniently heated, and the hollow areas 11 of the high-pressure heating module are usually big heads and small heads, 1 or more than 1 of each are used for heating the whole glass, as shown in fig. 2-4.
The second conductive layer 5 is heated, and the temperature after heating is radiated to the inner side and the outer side; the temperature is respectively transferred to the outer glass and the inner glass, the outer glass is frosted, and the inner fog is removed; through adding first conducting layer 6, can play the heat preservation effect, work simultaneously with second conducting layer 5, rebound after the heat of second conducting layer 5 reaches first conducting layer 6, can heat outer glass substrate 1 fast, for conventional heating method, can let the temperature of outer glass substrate 1 rise 2-3 ℃ at least.
The high-voltage heating glass can be powered by a power supply of 18-36V, preferably 20-30V (safety voltage can meet the defrosting standard requirement of-18 ℃ in winter, if higher requirement is met, the voltage can be properly increased or the sheet resistance of the film surface can be properly reduced); the low-voltage heating glass can be powered by a 12-14V power supply, and the low-voltage main heating module and the low-voltage auxiliary heating module can share the same voltage and can be separately and independently controlled;
the power density of the high-pressure heating glass is 500-800 w/m 2 The method comprises the steps of carrying out a first treatment on the surface of the In the low-pressure heating glass, the power density of the low-pressure main heating module is 400-500 w/m 2 The power density of the low-pressure auxiliary heating module is 600-800 w/m 2 ；
The area of the second partial shielding layer 18 > the first partial shielding layer 22 in the low-pressure main heating module.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. The utility model provides an interior surface coating film heating vehicle laminated glass which characterized in that: the glass comprises high-pressure heating glass and low-pressure heating glass, wherein the high-pressure heating glass can control the voltage between 18V and 36V; the low-pressure heating glass can control the voltage below 14V.
2. The interior surface coated heated vehicle laminated glass of claim 1, wherein: the high-pressure heating glass sequentially comprises an outer glass substrate, a second shielding layer, a second conductive layer, an intermediate layer, an inner glass substrate, a first conductive layer, a first conductive belt and a first shielding layer;
wherein the inner glass substrate, the first conductive layer, the first conductive tape and the first shielding layer form a high-voltage independent heating module.
3. The interior surface coated heated vehicle laminated glass of claim 2, wherein: the first shielding layer is provided with a plurality of hollow areas, and the number of the hollow areas is 1 or more; the fretwork district can let first conductive strip part expose, the fretwork district can set up external joint and realize the electricity and connect.
4. A coated heated interior surface automotive laminated glass as defined in claim 3, wherein: the external connector comprises a first connecting terminal, a first converging terminal and a first input terminal, wherein the first connecting terminal and the first input terminal are electrically connected through the first converging terminal, the first connecting terminal is connected with a first conductive belt in the range of the hollowed-out area in a welding mode, and the first input terminal is connected to a power supply.
5. The inner surface coating heated vehicle laminated glass of claim 4, wherein: the first bus terminal is externally provided with an insulating material for protection and is prevented from being electrically connected with other metal devices except the invention.
6. The interior surface coated heated vehicle laminated glass of claim 1, wherein: the edge of the first conductive layer, which is close to the periphery of the glass, is also provided with a first edge film removing area for removing 5-20mm of film; the first conductive layer is also provided with a first local film removing area, and a first local shielding layer is further arranged on the first conductive layer around the first local film removing area.
7. The interior surface coated heated vehicle laminated glass of claim 1, wherein: the low-voltage heating glass sequentially comprises an outer glass substrate, a second shielding layer, a second conductive belt, an intermediate layer, an inner glass substrate, a first conductive layer, a first conductive belt and a first shielding layer;
wherein the outer glass substrate, the second shielding layer, the second conductive layer and the second conductive belt form a low-voltage main heating module; the inner glass substrate, the first conductive layer, the first conductive belt and the first shielding layer form a low-voltage auxiliary heating module; the first shielding layer is provided with a plurality of hollow areas.
8. The interior surface coated heated vehicle laminated glass of claim 7, wherein: the first conductive layer of the low-pressure heating glass is also provided with a first local film removing area, and a first local shielding layer is further arranged on the first conductive layer around the first local film removing area.
9. The interior surface coated heated vehicle laminated glass of claim 7, wherein: the second conductive layer of the low-voltage main heating module is provided with a second local film removing area, and a second local shielding layer is arranged on the second conductive layer around the second local film removing area;
the upper side and the lower side of the second conductive layer are also provided with a second connecting terminal, a second converging terminal and a second input terminal; the second connecting terminal and the second input terminal are electrically connected through a second bus terminal, the second connecting terminal is connected with a second conductive belt in the range of the hollowed-out area in a welding mode, and the second input terminal is connected to a power supply.
10. The interior surface coated heated vehicle laminated glass of claim 7, wherein: two first conductive strips are arranged below the first conductive layer of the low-voltage auxiliary heating module, each first conductive strip is connected with a first connecting terminal, the first connecting terminals and the first input terminals are electrically connected through first bus terminals, and the first input terminals are connected to a power supply.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2023106967455 | 2023-06-13 | ||
| CN202310696745 | 2023-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117183497A true CN117183497A (en) | 2023-12-08 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322430463.9U Active CN221090167U (en) | 2023-06-13 | 2023-09-07 | Vehicle laminated glass with inner surface coated with film and heated |
| CN202311151590.3A Pending CN117183497A (en) | 2023-06-13 | 2023-09-07 | Vehicle laminated glass with inner surface coated with film and heated |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322430463.9U Active CN221090167U (en) | 2023-06-13 | 2023-09-07 | Vehicle laminated glass with inner surface coated with film and heated |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN221090167U (en) |
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2023
- 2023-09-07 CN CN202322430463.9U patent/CN221090167U/en active Active
- 2023-09-07 CN CN202311151590.3A patent/CN117183497A/en active Pending
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| CN221090167U (en) | 2024-06-07 |
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