阅读说明：本技术 一种夹层加热玻璃 (Interlayer heating glass ) 是由 陈志新 关金亮 陈安 于 2019-09-18 设计创作，主要内容包括：本发明涉及玻璃加热技术领域,特别是通过透明导电膜进行加热的汽车玻璃,具体地提供一种夹层加热玻璃。该夹层加热玻璃包括外玻璃板、热塑性中间层和内玻璃板,在外玻璃板的表面上沉积透明导电膜,在透明导电膜上设置至少两个导电电极；在至少一个导电电极的下方设置深色遮蔽层和过渡导电层,在深色遮蔽层的至少局部表面上和过渡导电层的至少局部表面上沉积有透明导电膜,过渡导电层上的透明导电膜的至少部分位于导电电极和过渡导电层之间。本发明能够减少透明导电膜被大面积污染,提高透明导电膜的导电连续性和电加热效果；有利于导电电极与透明导电膜的电连接,方便导电电极的设计和布置；还能够提高夹层加热玻璃的生产效率和产品质量。(The invention relates to the technical field of glass heating, in particular to automobile glass heated through a transparent conductive film, and specifically provides laminated heating glass. The sandwich heating glass comprises an outer glass plate, a thermoplastic interlayer and an inner glass plate, wherein a transparent conductive film is deposited on the surface of the outer glass plate, and at least two conductive electrodes are arranged on the transparent conductive film; and arranging a dark shielding layer and a transitional conducting layer below at least one conducting electrode, depositing a transparent conducting film on at least partial surface of the dark shielding layer and at least partial surface of the transitional conducting layer, and at least part of the transparent conducting film on the transitional conducting layer is positioned between the conducting electrode and the transitional conducting layer. The invention can reduce the large-area pollution of the transparent conductive film and improve the conductive continuity and the electric heating effect of the transparent conductive film; the conductive electrode is electrically connected with the transparent conductive film, and the design and the arrangement of the conductive electrode are convenient; and the production efficiency and the product quality of the sandwich heating glass can be improved.)

1. a sandwich heating glass comprises an outer glass plate, a thermoplastic interlayer and an inner glass plate, wherein the thermoplastic interlayer is clamped between the outer glass plate and the inner glass plate, a transparent conductive film is deposited on the surface of the outer glass plate, which is in contact with the thermoplastic interlayer, and at least two conductive electrodes are arranged on the transparent conductive film; the method is characterized in that: and arranging a dark shielding layer and a transitional conducting layer below at least one conducting electrode, wherein the dark shielding layer is arranged on the surface of the outer glass plate, which is in contact with the thermoplastic middle layer, the transitional conducting layer is arranged on the dark shielding layer, the transparent conducting film is deposited on at least partial surface of the dark shielding layer and at least partial surface of the transitional conducting layer, and at least part of the transparent conducting film on the transitional conducting layer is positioned between the conducting electrode and the transitional conducting layer.

2. The laminated heating glass according to claim 1, wherein: the transparent conductive film is a metal coating film, a metal alloy coating film or a transparent conductive oxide coating film.

3. The laminated heating glass according to claim 1, wherein: the conductive electrode is metal foil and/or conductive silver paste.

4. The laminated heating glass according to claim 3, wherein: when the conductive electrode is a metal foil, the width of the conductive electrode is less than or equal to the width of the transitional conducting layer.

5. The laminated heating glass according to claim 1, wherein: the distance between one end of the transition conducting layer close to the center of the outer glass plate and the center of the outer glass plate is larger than or equal to the distance between one end of the dark shielding layer close to the center of the outer glass plate and the center of the outer glass plate.

6. The laminated heating glass according to claim 1, wherein: the dark shielding layer is made of dark ink, and the color of the dark shielding layer is black or brown.

7. the laminated heating glass according to claim 1, wherein: the transition conducting layer is made of conductive silver paste, and the silver content of the conductive silver paste is at least 60 wt%.

8. The laminated heating glass according to claim 7, wherein: the silver content of the conductive silver paste is 65-90 wt%, and the sheet resistance is 3-12 m omega/□.

9. The laminated heating glass according to claim 1, wherein: and a second dark shielding layer is arranged on the surface of the inner glass plate, which is in contact with the thermoplastic interlayer, and/or the surface of the inner glass plate, which is far away from the thermoplastic interlayer.

10. The laminated heating glass according to claim 1, wherein: the surface of the dark shielding layer deposited with the transparent conductive film is at least partially wedge-shaped.

11. The laminated heating glass according to claim 10, wherein: the whole dark color shielding layer is wedge-shaped, and the thickness of the dark color shielding layer is gradually increased from one end close to the center of the outer glass plate to one end far away from the center of the outer glass plate.

12. The laminated heating glass according to claim 10, wherein: the dark masking layer includes at least one wedge-shaped segment and at least one blanket segment.

13. The laminated heating glass according to claim 12, wherein: the transition conducting layer is entirely located on the uniform thickness section.

14. The laminated heating glass according to claim 10, wherein: at least a portion of the transitional conducting layer is located on the tapered surface of the dark masking layer.

15. The laminated heating glass according to claim 10, wherein: the thermoplastic intermediate layer is at least partially wedge-shaped, and the wedge angle of the wedge-shaped part of the dark shielding layer is larger than or equal to that of the wedge-shaped part of the thermoplastic intermediate layer.

16. The laminated heating glass according to any one of claims 10 to 15, wherein: the surface of the transitional conducting layer deposited with the transparent conducting film is at least partially wedge-shaped.

17. The laminated heating glass according to claim 16, wherein: the wedge angle of the wedge-shaped part of the transitional conducting layer is smaller than or equal to that of the wedge-shaped part of the dark shielding layer.

18. The laminated heating glass according to claim 16, wherein: the transition conducting layer is integrally wedge-shaped, and the thickness of the transition conducting layer is gradually increased from one end close to the center of the outer glass plate to one end far away from the center of the outer glass plate.

19. The laminated heating glass according to claim 16, wherein: the transitional conducting layer includes at least one wedge segment and at least one blanket segment.

The technical field is as follows:

The invention relates to the technical field of glass heating, in particular to automobile glass heated through a transparent conductive film, and specifically provides laminated heating glass.

Background art:

In order to ensure the safety and comfort of automobile driving, the automobile glass is often required to have a heating function, for example, a transparent conductive film can be arranged on the automobile glass, and the automobile glass is heated by the transparent conductive film so as to realize the function of quickly defrosting and demisting. Generally, an automotive glass provided with a transparent conductive film is a laminated glass, and the transparent conductive film is located between an outer glass plate and an inner glass plate of the laminated glass, that is, the transparent conductive film is provided on one surface (second surface) of the outer glass plate close to the interior of the vehicle or on one surface (third surface) of the inner glass plate close to the exterior of the vehicle.

In the process of technical development of automobile heating glass, a transparent conductive film is arranged on one side of an outer glass plate close to the interior of an automobile in the early stage, for example, patents CN88100933A, US4820902A, US4918288A, US4939348A, US5028759A, US5070230A and US5346770A all arrange the transparent conductive film on one side (second surface) of the outer glass plate close to the interior of the automobile, and because the beauty of the automobile glass is considered, opaque ink with a shielding effect needs to be printed on the same surface, and the printing ink is easy to pollute the transparent conductive film, so that the conductivity of an overlapped area of the transparent conductive film and the printing ink is weakened; the thickness of the printing ink is micron-sized, and the thickness of the transparent conductive film is nano-sized, so that step faults are inevitably easy to generate at the junction of the transparent conductive film and the printing ink, and the step faults easily cause the transparent conductive film to be locally broken in the heating or vibrating process, thereby causing abnormal temperature of the broken position or local heating failure and influencing the whole heating effect, so that the production process of the transparent conductive film has high requirement, the yield of actual products is low, and the patent technologies are limited by the technical conditions at the time, and are not applied to actual automobile heating products in large scale.

In order to solve the above-mentioned problems of the transparent conductive film and the printing ink being on the same surface, the prior art has a transparent conductive film disposed on the inner glass plate on the side close to the outside of the vehicle (third surface) and an ink printed on the outer glass plate on the side close to the inside of the vehicle, thereby avoiding the contamination of the transparent conductive film by the printing ink and the local "breaking" of the transparent conductive film, for example, patent CN1671549A discloses that the conductive coating is disposed on the outer surface of the inner plate called the third surface of the laminate or windshield assembly, and patent CN101921066A discloses that the laminate including the functional layer is disposed on the third surface (the first surface is the outermost surface of the vehicle and the fourth surface is the innermost surface), and since the third surface, i.e., the side close to the outside of the vehicle on the inner glass plate is convex, the forming process of the automotive glass employs a convex-down transfer mode, and the convex surface of the glass plate will contact the transfer roller during, the transparent conductive film is easy to damage, so that the glass plate deposited with the transparent conductive film on the third surface cannot be bent and formed by single plate, and only double-plate gravity forming or double-plate gravity and pressing forming can be adopted, so that the difficulty and the process complexity of bending and forming the glass plate are increased, the glass molded surface cannot reach the uniformity of single plate forming, and the transparent conductive film cannot be suitable for products with large spherical surfaces due to the heat reflection characteristic of the transparent conductive film.

In addition, due to the development of automobile glass intellectualization, more and more components such as cameras and laser radars are integrated on the automobile glass, and the components have higher requirements on the installation surface, are directly adhered to the area without ink on the glass plate, and have the risk of falling. Meanwhile, the automobile glass provided with the transparent conductive film is also required to be provided with a conductive electrode, a lead connector and the like, if one surface of the inner glass plate close to the inside of the automobile is not provided with ink, the appearance and the adhesive property of the glass cement of the automobile body are influenced, and the risk of falling of the glass exists; if the transparent conductive film is continuously arranged on the surface, close to the outside of the vehicle, of the inner glass plate, namely the third surface, the printing process difficulty of arranging the printing ink on the surface, close to the inside of the vehicle, of the inner glass plate, namely the fourth surface is increased, and the transparent conductive film is easily damaged in the printing ink process, so that the film surface defect is caused.

The invention content is as follows:

The invention aims to solve the technical problem that the transparent conductive film is easily polluted by ink in the prior art or easily damaged in the ink printing process, and the like, and provides the laminated heating glass.

The technical scheme adopted by the invention for solving the technical problems is as follows: a sandwich heating glass comprises an outer glass plate, a thermoplastic interlayer and an inner glass plate, wherein the thermoplastic interlayer is clamped between the outer glass plate and the inner glass plate, a transparent conductive film is deposited on the surface of the outer glass plate, which is in contact with the thermoplastic interlayer, and at least two conductive electrodes are arranged on the transparent conductive film; the method is characterized in that: and arranging a dark shielding layer and a transitional conducting layer below at least one conducting electrode, wherein the dark shielding layer is arranged on the surface of the outer glass plate, which is in contact with the thermoplastic middle layer, the transitional conducting layer is arranged on the dark shielding layer, the transparent conducting film is deposited on at least partial surface of the dark shielding layer and at least partial surface of the transitional conducting layer, and at least part of the transparent conducting film on the transitional conducting layer is positioned between the conducting electrode and the transitional conducting layer.

Preferably, the transparent conductive film is a metal plating film, a metal alloy plating film or a transparent conductive oxide plating film.

Preferably, the conductive electrode is a metal foil and/or a conductive silver paste. More preferably, when the conductive electrode is a metal foil, the width of the conductive electrode is less than or equal to the width of the transitional conducting layer.

Preferably, the distance between one end of the transitional conducting layer close to the center of the outer glass plate and the center of the outer glass plate is greater than or equal to the distance between one end of the dark shielding layer close to the center of the outer glass plate and the center of the outer glass plate.

Preferably, the material of the dark shielding layer is dark ink, and the color of the dark shielding layer is black or brown.

Preferably, the material of the transition conductive layer is conductive silver paste, and the silver content of the conductive silver paste is at least 60 wt%. More preferably, the silver content of the conductive silver paste is 65-90 wt%, and the sheet resistance is 3-12 m omega/□.

Preferably, a second dark shade layer is disposed on the surface of the inner glass sheet in contact with the thermoplastic interlayer and/or the surface of the inner glass sheet remote from the thermoplastic interlayer.

Preferably, the surface of the dark shielding layer deposited with the transparent conductive film is at least partially wedge-shaped.

more preferably, the dark shielding layer is wedge-shaped as a whole, and the thickness of the dark shielding layer gradually increases from one end close to the center of the outer glass plate to one end far away from the center of the outer glass plate.

More preferably, the dark masking layer comprises at least one wedge-shaped segment and at least one uniform thickness segment. Further, the transition conductive layer is entirely located on the blanket section.

More preferably, at least part of the transitional conducting layer is located on the tapered surface of the dark masking layer.

More preferably, the thermoplastic intermediate layer is at least partially wedge-shaped, and the wedge angle of the wedge-shaped portion of the dark shielding layer is greater than or equal to the wedge angle of the wedge-shaped portion of the thermoplastic intermediate layer.

more preferably, the surface of the transition conductive layer deposited with the transparent conductive film is at least partially wedge-shaped.

Further, the wedge angle of the wedge-shaped part of the transition conducting layer is smaller than or equal to the wedge angle of the wedge-shaped part of the dark shielding layer.

Further, the transition conducting layer is wedge-shaped as a whole, and the thickness of the transition conducting layer is gradually increased from one end close to the center of the outer glass plate to one end far away from the center of the outer glass plate.

Further, the transitional conducting layer includes at least one tapered section and at least one blanket section.

due to the adoption of the technical scheme, the invention has the following beneficial effects:

The interlayer heating glass adopted by the invention can reduce the large-area pollution of the transparent conductive film and improve the conductive continuity and the electric heating effect of the transparent conductive film; the conductive electrode is electrically connected with the transparent conductive film, and the design and the arrangement of the conductive electrode are convenient; the deposition efficiency of the transparent conductive film can be improved, and the production efficiency and the product quality of the sandwich heating glass are improved.

Description of the drawings:

FIG. 1 is a schematic structural view of a laminated heating glass according to the present invention;

FIG. 2 is an enlarged partial schematic view of a dark masking layer and a transitional conducting layer according to the present invention;

FIG. 3 is a partially enlarged schematic view of a dark masking layer and a transition conductive layer according to a second embodiment of the present invention;

FIG. 4 is a partially enlarged schematic view of a dark masking layer and a transitional conducting layer of a third embodiment of the present invention;

Fig. 5 is a partially enlarged schematic view of a dark shielding layer and a transition conductive layer according to a fourth embodiment of the present invention.

The specific implementation mode is as follows:

The invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, the laminated heating glass according to the present invention comprises an outer glass plate 1, a thermoplastic intermediate layer 2 and an inner glass plate 3, wherein the thermoplastic intermediate layer 2 is sandwiched between the outer glass plate 1 and the inner glass plate 3, a transparent conductive film 4 is deposited on a surface of the outer glass plate 1 contacting with the thermoplastic intermediate layer 2, and at least two conductive electrodes 5 are disposed on the transparent conductive film 4; the transparent conductive film 4 is electrically connected to a power supply (not shown) through at least two conductive electrodes 5, so that a current of the power supply can be supplied into the transparent conductive film 4.

In the present invention, the laminated heating glass may be installed at a body opening position of a vehicle, with its outer glass panel 1 located outside the vehicle and its inner glass panel 3 located inside the vehicle; the surface of the outer glass sheet 1 remote from the thermoplastic interlayer 2 is defined as the first surface 11, the surface of the outer glass sheet 1 in contact with the thermoplastic interlayer 2 is positioned as the second surface 12, the surface of the inner glass sheet 3 in contact with the thermoplastic interlayer 2 is defined as the third surface 31, and the surface of the inner glass sheet 3 remote from the thermoplastic interlayer 2 is defined as the fourth surface 32. Obviously, the present invention deposits the transparent conductive film 4 on the second surface 12, thereby satisfying the requirements of the profile quality of the integrated multifunctional automobile glass, such as clearer head-up display (HUD) effect, and realizing the fourth surface printing in a low-cost manner.

the transparent conductive film 4 can be formed by depositing the transparent conductive film 4 on the second surface 12 by vapor deposition, for example, by magnetron sputtering; further, the transparent conductive film 4 is preferably able to withstand a high-temperature heat treatment, for example, a heat treatment process of a bending process such as baking bending or tempering. Specifically, the transparent conductive film 4 may be a metal plating film, a metal alloy plating film, or a transparent conductive oxide plating film; the metal coating may be gold (Au), silver (Ag), copper (Cu), aluminum (Al), or the like, for example, a silver-based coating is adopted, that is, the metal coating includes at least one silver layer, for example, a silver layer (single silver), two silver layers (double silver), three silver layers (triple silver), or the like; the metal alloy coating film can be made of silver alloy; the transparent conductive oxide coating film can be selected from indium tin oxide, fluorine-doped tin dioxide, aluminum-doped tin dioxide, gallium-doped tin dioxide, boron-doped tin dioxide, tin zinc oxide, antimony-doped tin oxide and the like.

The conductive electrode 5 may be a metal foil fixed on the transparent conductive film 4 by means of pasting or the like, the metal foil may be a gold foil, a silver foil, a copper foil, an aluminum foil or the like, and a copper foil with a tin-plated surface is usually used as the conductive electrode 5; the conductive electrode 5 can also be conductive silver paste, and the conductive silver paste is directly formed on the transparent conductive film 4 by printing and other modes to form the conductive electrode 5; the conductive electrode 5 can also select conductive silver paste and metal foil at the same time, the conductive silver paste is directly printed on the transparent conductive film 4, and then the metal foil is fixed on the conductive silver paste by means of pasting and the like. Preferably, when the conductive electrode 5 is made of metal foil, the width of the conductive electrode 5 is smaller than or equal to the width 7 of the transition conductive layer, so that quick centering can be realized when the metal foil is fixed.

According to the invention, a dark shielding layer 6 and a transitional conducting layer 7 are preferably arranged below at least one conducting electrode 5, the dark shielding layer 6 is arranged on the second surface 12 of the outer glass plate 1 which is in contact with the thermoplastic interlayer 2, the transitional conducting layer 7 is arranged on the dark shielding layer 6, the transparent conducting film 4 is deposited on at least partial surface of the dark shielding layer 6 and at least partial surface of the transitional conducting layer 7, and at least part of the transparent conducting film 4 on the transitional conducting layer 7 is positioned between the conducting electrode 5 and the transitional conducting layer 7. The dark color shielding layer 6 is used for shielding components in the laminated heating glass, such as the boundary of the transparent conductive film 4, the conductive electrode 5, and a lead tab (not shown); the transition conducting layer 7 is used for isolating the transparent conducting film 4 and the dark shielding layer 6 in a local space, reducing large-area pollution of the dark shielding layer 6 to the transparent conducting film 4, and improving the conducting continuity and the electric heating effect of the transparent conducting film 4. Preferably, the distance between one end of the transitional conducting layer 7 close to the center of the outer glass plate 1 and the center of the outer glass plate 1 is greater than or equal to the distance between one end of the dark shielding layer 6 close to the center of the outer glass plate 1 and the center of the outer glass plate 1.

the dark color shielding layer 6 is preferably made of dark color ink, such as black ceramic glaze, and can be fixed on the second surface 12 through screen printing and the like, so that the boundary of the transparent conductive film 4, the conductive electrode 5, the transition conductive layer 7, the lead connector and the like are prevented from being seen from the outside of the vehicle, the peripheral color of the laminated heating glass can be ensured to be consistent, and the peripheral appearance of the laminated heating glass can be improved; but also can obstruct solar radiation, avoid the accelerated aging of components in the interlayer heating glass, improve the stability of the product and prolong the service life. Alternatively, the dark masking layer 6 may also be brown or the like.

The transition conducting layer 7 is preferably made of conductive silver paste, and can also be fixed on the dark shielding layer 6 in a screen printing mode and the like; the silver content of electrically conductive silver thick liquid is 60 weight percent at least (calculated according to the total weight of electrically conductive silver thick liquid) outer glass sheet 1 is after high temperature thermal treatment, partial silver atom in transition conducting layer 7 can permeate transparent conducting film 4 with the region that transition conducting layer 7 overlaps, thereby improves the surface conductivity of transparent conducting film 4 of overlapping region, is favorable to electrically connecting conducting electrode 5 and transparent conducting film 4 like this, makes things convenient for the design and the arrangement of conducting electrode 5. More preferably, the silver content of the conductive silver paste used for the transitional conducting layer 7 is 65-90 wt%, and the sheet resistance is 3-12 m Ω/□.

Specifically, a dark color shielding layer 6 may be formed on the second surface 12 of the outer glass plate 1 by screen printing a black ceramic glaze, the dark color shielding layer 6 may be pre-cured by high temperature sintering at 400 ℃ or baking at 100 to 150 ℃, then a conductive silver paste is printed on the dark color shielding layer 6 to form a transition conductive layer 7, after the transition conductive layer 7 is pre-sintered, a transparent nano film 4 is deposited on the second surface 12 of the outer glass plate 1 by magnetron sputtering, and the transparent nano film 4 may be continuously deposited on the second surface 12, at least a partial surface of the dark color shielding layer 6, and at least a partial surface of the transition conductive layer 7.

In the invention, the thickness of the dark color shielding layer 6 is micron-sized, for example, 5-40 microns, the thickness of the transparent conductive film 4 is nanometer-sized, for example, 50-500 nanometers, in order to avoid the step fault generated at the junction of the dark color shielding layer 6 and the outer glass plate 1 by the transparent conductive film on the second surface 12 and the transparent conductive film on the dark color shielding layer 6, at least part of the surface of the dark color shielding layer 6 deposited with the transparent conductive film 4 is preferably wedge-shaped, through the wedge-shaped surface, the continuous transition from the second surface 12 to the surface of the dark color shielding layer 6 can be realized, the deposition efficiency of the transparent conductive film 4 is improved, and thus the production efficiency and the product quality of the interlayer heating glass are improved.

As shown in fig. 2, the dark shielding layer 6 has a wedge-shaped section 61 and a uniform thickness section 62, the thickness of the wedge-shaped section 61 gradually increases from one end close to the center of the outer glass plate 1 to one end far away from the center of the outer glass plate 1, the thickness of the uniform thickness section 62 is equal to the maximum thickness of the wedge-shaped section 61, the uniform thickness section 62 extends outwards to the same side outer edge 13 of the outer glass plate 1, one part of the transitional conducting layer 7 is located on the wedge-shaped section 61, and the other part of the transitional conducting layer 7 is located on the uniform thickness section 62; the end of the wedge-shaped section 61 close to the center of the outer glass plate 1 is the rightmost end 63 of the wedge-shaped section 61, the end of the transition conducting layer 7 close to the center of the outer glass plate 1 is the rightmost end 71 of the transition conducting layer 7, and the distance between the rightmost end 71 of the transition conducting layer 7 and the center of the outer glass plate 1 is greater than or equal to the distance between the rightmost end 63 of the wedge-shaped section 61 and the center of the outer glass plate 1; the transparent conductive film 4 is continuously deposited from the second surface 12 out to the surface of the wedge-shaped section 61 not covered by the transitional conductive layer 7 to at least a partial surface of the transitional conductive layer 7.

As shown in fig. 3, the dark shielding layer 6 is wedge-shaped as a whole, the thickness of the dark shielding layer 6 gradually increases from one end close to the center of the outer glass plate 1 to one end far away from the center of the outer glass plate 1, the dark shielding layer 6 extends outwards to the outer edge 13 on the same side of the outer glass plate 1, the transition conducting layer 7 is located on the wedge-shaped surface 601 of the dark shielding layer 6, and the distance between the rightmost end 71 of the transition conducting layer 7 and the center of the outer glass plate 1 is greater than or equal to the distance between the rightmost end 63 of the wedge-shaped section 61 and the center of the outer glass plate 1; the transparent conductive film 4 is continuously deposited from the second surface 12 outwards to the surface of the wedge-shaped surface 601 not covered by the transitional conductive layer 7 and close to the center of the outer glass plate 1 to at least a partial surface of the transitional conductive layer 7.

As shown in fig. 4, the dark shielding layer 6 has a first wedge-shaped section 611, a uniform thickness section 612 and a second wedge-shaped section 613, the thickness of the first wedge-shaped section 611 gradually increases from an end close to the center of the outer glass plate 1 to an end far from the center of the outer glass plate 1, the thickness of the uniform thickness section 612 is equal to the maximum thickness of the first wedge-shaped section 611, the thickness of the second wedge-shaped section 613 gradually decreases from an end close to the center of the outer glass plate 1 to an end far from the center of the outer glass plate 1, the second wedge-shaped section 613 extends outwards to the same side outer edge 13 of the outer glass plate 1, a part of the transition conductive layer 7 is located on the first wedge-shaped section 611, and another part of the transition conductive layer 7 is located on the uniform thickness section 612; the distance between the rightmost end 71 of the transitional conducting layer 7 and the center of the outer glass plate 1 is greater than or equal to the distance between the rightmost end 63 of the wedge-shaped section 61 and the center of the outer glass plate 1; the transparent conductive film 4 is continuously deposited from the second surface 12 outwards to the surface of the first wedge-shaped segment 611 not covered by the transitional conductive layer 7 to at least a partial surface of the transitional conductive layer 7.

as shown in fig. 5, the dark shielding layer 6 has a wedge-shaped section 621 and a uniform thickness section 622, the thickness of the wedge-shaped section 621 gradually increases from one end close to the center of the outer glass plate 1 to one end far away from the center of the outer glass plate 1, the thickness of the uniform thickness section 622 is equal to the maximum thickness of the wedge-shaped section 621, the uniform thickness section 622 extends outwards to the same side outer edge 13 of the outer glass plate 1, and the transitional conducting layer 7 is entirely located on the uniform thickness section 622; the end of the wedge-shaped section 621 close to the center of the outer glass plate 1 is the rightmost end 63 of the wedge-shaped section 621, the end of the transition conducting layer 7 close to the center of the outer glass plate 1 is the rightmost end 71 of the transition conducting layer 7, and the distance between the rightmost end 71 of the transition conducting layer 7 and the center of the outer glass plate 1 is greater than or equal to the distance between the rightmost end 63 of the wedge-shaped section 621 and the center of the outer glass plate 1; the transparent conductive film 4 is continuously deposited from the second surface 12 outwards to the surface of the tapered section 621 and then to at least a partial surface of the transitional conductive layer 7.

In the invention, the thickness of the transition conducting layer 7 is 5-35 microns, the transition conducting layer 7 can be uniform in thickness, or preferably, at least part of the surface of the transition conducting layer 7 deposited with the transparent conducting film 4 is in a wedge shape; fig. 2 and 3 show that the transition conductive layer 7 is wedge-shaped as a whole, and the thickness of the transition conductive layer 7 gradually increases from the end close to the center of the outer glass plate 1 to the end far away from the center of the outer glass plate 1; fig. 4 shows that the transitional conducting layer 7 has a wedge-shaped section 701 and a uniform thickness section 702, at least part of the wedge-shaped section 701 of the transitional conducting layer 7 is located on the first wedge-shaped section 611 of the dark shielding layer 6, and the thickness of the wedge-shaped section 701 gradually increases from one end close to the center of the outer glass plate 1 to one end far away from the center of the outer glass plate 1; fig. 5 shows that the entire transition conductive layer 7 is blanket, and the transition conductive layer 7 is entirely located on the blanket section 622 of the dark masking layer 6. Preferably, the wedge angle of the wedge-shaped part of the transitional conducting layer 7 is smaller than or equal to the wedge angle of the wedge-shaped part of the dark masking layer 6.

In fig. 2, 3, 4 and 5, the rightmost end 63 of the wedge-shaped segments 61, 601, 611, 621 and the rightmost end 71 of the transitional conducting layer 7 are schematically provided with a thickness that does not cause step faults in the transparent conducting film 4, so as not to affect the continuous deposition of the transparent conducting film 4; it will be appreciated that the rightmost end 63 of the wedge-shaped segments 61, 601, 611, 621 and the thickness of the transition conductive layer 7 may actually be close to zero. Meanwhile, for clarity of marking and display, the dark shielding layer 6 in fig. 2, 3, 4 and 5 is not filled with patterns as in fig. 1. In addition, the thicknesses of the transparent nano film 4 on the second surface 12, the transparent conductive film 4 on the surface of the dark shielding layer 6 and the transparent conductive film 4 on the surface of the transition conductive layer 7 are all equal, and the partial unequal thicknesses in the drawing are caused for convenience of drawing and intuition of display and do not affect the actual product.

in fig. 1, the present invention is also provided with a second dark color masking layer 8 on the fourth surface 32, thereby avoiding the boundaries of the transparent conductive film 4, the conductive electrodes 5, the transitional conductive layer 7, the lead tabs, and the like from being seen from the vehicle interior; the material of the second dark shielding layer 8 can be selected to be the same as that of the dark shielding layer 6, and dark printing ink, such as black ceramic glaze, can be fixed on the fourth surface 32 by screen printing and the like; it is understood that the present invention may also be provided with the second dark shielding layer 8 on the third surface 31, even with the second dark shielding layer 8 on both the third surface 31 and the fourth surface 32. The dark masking layer 6 is typically disposed around the perimeter of the second surface 12, and the second dark masking layer 8 may be aligned with the dark masking layer 6 or only partially cross-overlapped.

The present invention also finds that in the laminated heating glass in which the thermoplastic intermediate layer 2 is at least partially wedge-shaped, the head-up display effect of the transparent conductive film 4 deposited on the second surface 12 is more excellent than the head-up display effect of the transparent conductive film 4 deposited on the third surface 31, and preferably, the wedge angle of the wedge-shaped portion of the dark color shield layer 6 is greater than or equal to the wedge angle of the wedge-shaped portion of the thermoplastic intermediate layer 2.

Although the laminated heating glass according to the present invention has been described in detail, the present invention is not limited to the above-described embodiments, and therefore, any improvements, equivalent modifications, substitutions and the like according to the technical gist of the present invention are within the scope of the present invention.