Glazing having a coated printed portion, method for manufacturing the same, and use thereof

Abstract

To provide a predetermined heat distribution throughout the glazing during use, an alternative glazing is provided that has a coated printed portion. [Solution] A glazing 1 is provided, comprising: a first glass sheet 2 having a surface; a printed layer 3 on a portion of the surface of the first glass sheet; a conductive coating 6 on a portion of the printed layer forming a coated printed portion 7 and on a portion of the surface of the first glass sheet forming a coated glass portion 8; first and second busbars 4, 5 having first or second busbar portions 4.1, 4.2, 5.3, 5.5 that are electrically in contact with the conductive coating and arranged on different axes; and first printed layer portions 3.1, 3.3, 3.5 adjacent to the first or second busbar portions that form adjustable coated printed portions 7.1, 7.3, 7.5 between the first and second busbars.

Description

Technical Field

[0001] The present invention relates to a glazing having a coated printed portion, a method for manufacturing the glazing, and the use of the glazing. The coated printed portion in the glazing is known to be an area where a conductive coating is deposited on a printed layer on glass for applications such as the electric heating of vehicle windows.

[0002] The same conductive coating directly deposited on the glass can have a lower sheet resistance because the sheet resistance increases due to the roughness of the printed layer.

Background Art

[0003] GB1915907.8 (Boote), which is filed concurrently with the present application, discloses a glazing having a conductive coating connected to two busbars. By changing the shape of the coated printed portion, the heating current can be directed to achieve the desired non-uniform heating of the glazing. A large printed layer for a group of sensors, known as a sensor farm, can divert the current around the sensor farm and advantageously increase the temperature on either side. <00\00017><\

[0004] <000\0024>U.S. Patent No. 10455645 (Masschelein) discloses a glass sheet having edges masked by enamel stripes. A conductive layer comprising three silver layers is deposited on the enamel stripes, and a busbar comprising a copper band is applied on top of the conductive layer.

[0005] U.S. Patent Application Publication No. 2015 / 0351160 (Phan) discloses a masking p ​​​​​​​​​​​​It comprises an outer glass with lint, an electric heating layer, and an inner glass with three busbars. We disclose a laminated glass.

[0006] The coating print provides a predetermined heat distribution across the glazing during use. There is still demand for alternative glazing with a partial coating. There is still a demand for methods to do this. [Overview of the Initiative]

[0007] Therefore, in a first embodiment, the present invention provides a glazing, A first glass sheet having a surface, A printed layer on a portion of the surface of the first glass sheet, On a portion of the printed layer that forms the coated printed area and coated A conductive coating on a portion of the surface of the first glass sheet that forms the glass portion, A first or second element that is in electrical contact with the conductive coating and is positioned on a different axis A first and second busbar having two busbar sections, A first adjustable coated printed portion is formed between the first and second busbars. a first printed layer portion adjacent to the first or second busbar portion, It provides glazing, which is equipped with [the necessary features].

[0008] Preferably, the first and second busbars are placed on the printing layer.

[0009] Preferably, the glazing is applied in a manner in which the conductive coating is at least partially missing. It is equipped with a data transmission window.

[0010] Preferably, the data transmission window is located between the first or second busbar portion and the busbar facing it. It is placed in between.

[0011] Preferably, the data transmission window is arranged between the first or second busbar portion and the adjacent edge of the glazing.

[0012] Preferably, the glazing comprises a second printed layer portion adjacent to a first printed layer portion forming a second adjustable coated printed portion between the first and second busbars.

[0013] Preferably, the first or second busbar portion is shaped as a line parallel to the first or second busbar or as a line inclined with respect to the first or second busbar or is shaped as a curve.

[0014] Preferably, the first adjustable coated printed portion or the second adjustable coated printed portion is shaped as a rectangle, square, triangle, polygon, or elliptical cross-section.

[0015] Preferably, the first adjustable coated printed portion or the second adjustable coated printed portion is arranged at the center of the glazing or at at least one corner.

[0016] Preferably, the glazing comprises a pattern of printed silver dots in electrical contact with a coated printed portion forming the first or second low sheet resistance coated printed portion.

[0017] Preferably, the first and second busbars are printed using a screen printing paste comprising frit and at least 80% silver.

[0018] ​​​​​​​​​​​​ Preferably, the coated printed portion has an impedance of 1 to 300 Ω / □, preferably 2.5 to Sheet resistance in the range of 120Ω / □, most preferably in the range of 3 to 8Ω / □ and 1 to 30% The interface has an area ratio Sdr.

[0019] Preferably, glazing is performed by plies of intermediate material to form laminated glass. It comprises a second glass sheet bonded to a first glass sheet.

[0020] The glazing can have any suitable shape, such as a trapezoid, rectangle, or triangle. The thickness of the glazing, including the glazing material, interlayer material, and conductor, is any thickness. For example, 2.5mm to 10.6mm, preferably 2.6mm to 3.8mm, more preferably The thickness can be 2.7mm to 3.2mm. The glazing material can be any suitable material, for example It may be soda-lime silica glass or borosilicate glass.

[0021] The first and second glass sheets may be formed by a float process and annealed. The glass sheet can be heat-strengthened or tempered. In laminated glass, the first glass sheet The first layer may be the inner ply of the glazing material, and the second glass sheet may be the glazing material. It can be the outer ply of the material, or vice versa.

[0022] The glazing may consist of two or more plies of the intermediate layer material. The intermediate layer material is polyvinyl It may be Lubutyral (PVB), which exhibits good adhesion after lamination to glass, and manufacturing It is advantageous because wire-shaped conductors can be embedded during construction. The thickness of the PVB is It can be any thickness, for example, 0.76 mm.

[0023] In a second embodiment, the present invention is as follows: The steps include preparing a first glass sheet having a surface, The steps include printing an insulating layer on a portion of the surface of a first glass sheet, On a portion of the printed layer that forms the coated printed area and the coated area A conductive coating is deposited on a portion of the surface of the first glass sheet that forms the lath portion. The steps, A first or second element that is in electrical contact with the conductive coating and is positioned on a different axis The steps include providing first and second busbars, each comprising two busbar sections, A first printed layer portion is placed adjacent to the first or second busbar portion, and the first and second The steps include forming a first adjustable coating printed portion between two busbars, The present invention provides a method for manufacturing glazing according to a first embodiment, including the following:

[0024] The printing of the print layer can be done by any method, such as screen printing.

[0025] In a third embodiment, the present invention relates to glazing according to the first embodiment to building windows or car windows. The invention provides for use as both windows. The present invention provides laminated glass or monolithic tempered glass. The windshield, rear window, side windows or roof of a vehicle as a window It is suitable for use as a window. [Effects of the Invention]

[0026] The inventors have provided a first adjustable coated mark between the first and second busbars. Providing a printed area is advantageous in achieving the desired heat distribution throughout the glazing. This invention reduces the temperature of undesirable hot spots and eliminates unwanted It increases the temperature of cold spots, resulting in faster glazing removal in a given area. It provides defrosting.

[0027] Surprisingly, the front has such an adjustable coated printed area. The temperature at the center of the glass is the same as the front, which does not have an adjustable coated printed area. It rises compared to the glass. At the same time, the top corner of the windshield adjacent to the busbar The temperature of the toss spot decreases.

[0028] Advantages include avoiding damage to the conductive coating by printing busbars. Furthermore, the busbar printing may be performed before the conductive coating is deposited.

[0029] This invention relates to the enamel masking strip being separate from the conductive coating and busbar. This overcomes the technical bias found in conventional technology, which dictates that the glass sheet must be the correct surface.

[0030] Herein, the present invention will be described with reference to the accompanying drawings, which are merely examples. Similar reference numbers identify similar parts. [Brief explanation of the drawing]

[0031] [Figure 1] This is a plan view of a glazing according to the present invention, having an upper busbar with one busbar section. [Figure 2] This is a cross-sectional view of the glazing according to the present invention, with the busbars located at the top of the conductive coating. [Figure 3] This is a cross-sectional view of the glazing according to the present invention, where a conductive coating is located on the top of the busbar. [Figure 4]This is a plan view of the glazing according to the present invention, having first and second coated printed portions and a “drop-down” busbar above the data transmission window. [Figure 5] This is a plan view of a glazing according to the present invention, which has an "undercamera" busbar, i.e., a data transmission window above the busbar. [Figure 6] This is a plan view of a glazing according to the present invention, having a “drop-down” busbar above the data transmission window and a lower busbar with one upward angle. [Figure 7] This is a plan view of a glazing according to the present invention, having a “drop-down” busbar with a silver dot pattern and a lower busbar with two upward angles. [Figure 8] This is the equivalent glazing circuit shown in Figure 1 of the present invention. [Figure 9] This is an equivalent glazing circuit according to the present invention, having a lower busbar with an upward angle. [Figure 10] This is a cross-sectional view of the glazing according to the present invention, which includes laminated glass. [Modes for carrying out the invention]

[0032] Referring to Figure 1, the glazing 1 comprises a first glass sheet 2 having a surface. The printed layer 3 is deposited on the peripheral portion of the surface of the first glass sheet 2 that forms the frame. .

[0033] The conductive coating 6 is a part of the printing layer 3 that forms the coated printed portion 7. A deposit is made on a portion of the surface of the first glass sheet 2 that forms the coated glass portion 8. It is piled up.

[0034] The first and second busbars 4 and 5 are arranged in electrical contact with the conductive coating 6. The first busbar 4 is located on a different axis from the first busbar portion 4.1. The first busbar portion 4.1 is parallel to the first busbar 4 and the first busbar It lies on an axis offset from 4 and is known as the "dropdown" busbar.

[0035] The first printed layer portion 3.1 is adjacent to the first busbar portion 4.1, and the first and second busbars A first adjustable coated printed portion 7.1 is formed between bars 4 and 5.

[0036] The first temperature is measured at the center point A of the coated glass portion 8. A portion of glazing 6 is removed, forming a sensor area near the upper edge on the center line XX of glazing 1. If this occurs, the central point A can be at a low temperature.

[0037] The second temperature is measured at the upper corner point B of the coated printed portion 7. If a portion of G6 is removed to form a sensor area, the upper corner point B is a hotspot. It is possible.

[0038] The third temperature is at the hot spot point H of the coated printed area 7 in the sensor area. Measurements are taken on one side. The hotspot point H is an additional sensor area (not shown), e.g., E This may be caused by the RTICO window.

[0039] Figure 2 shows a cross-section of the glazing according to Figure 1, where the conductive coating 6 is deposited on the printed layer 3, and then busbars 1 and 2, 4 and 5 are placed on top of it. It can be done.

[0040] In Figure 3, a cross-section of the glazing according to Figure 1 is shown, where the first and second bars Bars 4 and 5 are placed on the printed layer 3, and then the conductive coating 6 is deposited on the top. .

[0041] In Figure 4, the glazing is located above the data transmission window 9, as shown in Figure 1. It has a "drop-down" busbar 4.1. A first mark adjacent to the first busbar portion 4.1 The print layer portion 3.1 has a first adjustable coating between the first and second busbars 4, 5. Forms the printed portion 7.1.

[0042] The second printed layer portion 3.2 adjacent to the first printed layer portion 3.1 is the first and second bus A second adjustable coated printed section 7.2 is formed between bars 4 and 5.

[0043] The first printed layer portion 3.1 extends from the edge of glazing 1 to the opposite edge of glazing 1. It extends in that direction. In contrast, the second printed layer portion 3.2 extends toward the opposite edge of glazing 1. It will stand out even more in the future.

[0044] The data transmission window 9 is formed by the first printed layer portion 3.1, and the first adjustable corner Located within the coated printed area 7.1. Second adjustable coated mark The printing section 7.2 reduces the flow of current in the direction of the busbar section 4.1, thereby data It protrudes vertically downwards to reduce the hotspot temperature around the transmission window 9.

[0045] In Figure 5, the data transmission window 9 is located adjacent to the upper edge of the glazing 1, Therefore, the busbar section 4.2 forms the "under camera" busbar. Data transmission window 9 Hotspots around it are avoided, but between busbar section 4.2 and the second busbar 5 A shorter current path may increase the heat at the center of glazing 1. First and second tuning The retractable coated printed sections 7.1 and 7.2 are located in the center of glazing 1. To control heat, it is provided vertically below the busbar section 4.2.

[0046] In Figure 6, similar to Figure 4, the "dropdown" busbar portion 4.1 is the first bus It is provided on busbar 4. The second busbar 5 has an upward angle busbar portion 5.3. Adjacent The coated printed area 3.3 is an adjustable coated printed area 7. More current is possible through 3, and the cold spot near the end of the lower busbar 5 It is shaped into a triangle so that this is avoided.

[0047] In Figure 7, similar to Figure 6, the rising angle busbar section 5.3 increases the current flow. Forms an adjustable coated printed area 7.3. Molded in a triangular shape. The additional printed layer portion 3.4 forms an additional adjustable coated printed portion 7.4. This avoids hotspots. Any shape, for example, a stepped, curved, or elliptical cross-section, It can be used to meet formatting requirements and achieve the desired temperature.

[0048] At the second angle, the rising angle busbar section 5.5 is adjustable to increase the current flow. Adjacent coated printed areas form a coated printed area 7.5 It has part 3.5. An additional printed layer portion 3.6 that forms a triangular shape rotates the hot spot To avoid this, an additional adjustable coated printed portion 7.6 is formed.

[0049] Figure 8 shows the equivalent circuit corresponding to Figure 1. The first busbar section 4.1 corresponds to resistor R7.1 A resistor R7 supplies current to the adjustable coated printed portion 7.1 that forms the resistor. 1 is a resistor R8.1 and R formed by a portion of the coated glass part 8. In series with resistor R7.1 formed by the coated printed portion 7 below 8.1 This is part of a combination, and both are aligned in a straight line with the first busbar section 4.1.

[0050] The remaining part of the coated printed area 7 consists of resistor R7 and the coated glass portion. The remaining part of resistor R8 is formed by the remaining part of R8 and the coated print below the remaining part of R8 Part of the series combination of resistor R7' formed by the remainder of part 7, and both Neither of them is aligned in a straight line with the first busbar section 4.1.

[0051] Figure 9 shows the equivalent circuit corresponding to Figure 6. The first rising busbar section 5.3 is resistor R7 A resistor R supplies current to the adjustable coated printed portion 7.3 that forms .3. 7.3 is the resistor R8.3 and R8.3 formed by a portion of the coated glass part 8. In series with resistor R7.3 formed by the coated printed portion 7 above 8.3 It is part of a combination, and both are aligned in a straight line with the rising busbar section 5.3.

[0052] The remaining part of the coated printed area 7 consists of resistor R7 and the coated glass portion. The remaining part of resistor R8 is formed by the remaining part of R8 and the coated print below the remaining part of R8 Part of the series combination of resistor R7' formed by the remainder of part 7, and both Both sides are aligned in a straight line with the rising busbar section 5.3.

[0053] In Figure 10, the glazing 1 is bonded to each other by the ply 13 of the intermediate layer material. It is a laminated glass comprising a first glass sheet 2 and a second glass sheet 11. To achieve this, the conductive coating 6 is applied to the printed layer 3 and the first and second layers on which it is deposited. It is shown as a straight line representing the coating that clearly distinguishes busbars 4 and 5. [Examples]

[0054] The following describes embodiments of the present invention. The present invention is not limited to the embodiments described below. stomach.

[0055] Table 1 generally shows one comparative example and six examples of the present invention, as shown in Figures 1 to 10. The temperature measurements related to the examples are shown. In all seven cases, the coated print Part 7 has a sheet resistance of 8Ω / □.

[0056] The comparative example lacks busbar sections 4.1, 4.2, 5.3, and 5.5. That is, The first and second busbars 4 and 5 are straight lines.

[0057] Example 1 has a "drop-down" busbar portion 4.1. The rest of busbar 4 The offset from the minute is 30mm.

[0058] Example 2 is similar to Example 1, but the offset is 60 mm.

[0059] Example 3 has an "under camera" busbar portion 4.2. Busbar portion 4.2 It is supplied via a printed resistor, which results in a 3.4V voltage drop.

[0060] Example 4 is similar to Example 3, but the voltage drop is 4.7V.

[0061] Example 5 shows silver dots in the adjustable coated printed areas 7.7 and 7.8. It has the following characteristics. The silver dot is selected so that the sheet resistance is 3.6Ω / □.

[0062] Example 6 is similar to Example 5, but the sheet resistance is 5.3Ω / □.

[0063] Heating was simulated at 42V for 12 minutes, and temperature measurements were taken at three locations in glazing 1. . A: Center of the center line (center of Figure 1), a typical cold spot. B: Top angle of the busbar (upper busbar in Figure 1), a typical hotspot H: Hot spot on the side of the sensor area (right side of Figure 1)

[0064] [Table 1]

[0065] "Dropdown" busbar section 4.1, "Undercamera" busbar section 4.2 The silver dots in the adjustable coated printed areas 7.7 and 7.8 are, respectively, gray This technology increases heating at the center of the heating element and reduces hot spots at the top corners. do.

[0066] Advantageously, the adjustable coated print areas 7.1 to 7.8 are gray This increases the temperature at the center of the 1, resulting in faster fog removal and de-icing.

[0067] Rising angle busbar sections 5.3, 5.5 and associated adjustable coated print Sections 7.3, 7.4, 7.5, and 7.6 also eliminate cold spots at the lower end of the busbar. It is effective for doing so.

[0068] According to the present invention, the adjustable coated printed portion is a first or second busbar - Partially by a first or second busbar portion positioned on a different axis from the main part It is a coated printed portion that has been molded into shape. The first or second busbar portion is a line It may be shaped as and may be parallel to the first or second busbar, and the first or second busbar - Can be offset from, or can be inclined toward, or stepped, curved, Alternatively, it could be an elliptical cross-section.

[0069] The reference numbers in the drawings are as follows: [Explanation of Symbols]

[0070] 1. Glazing 2. First glass sheet 3 printing layer 3.1,3.2 First and second printed layer portions 3.3,3.4 Rightward rising angle printed layer 3.5, 3.6 Left-sloping angle printed layer 4. First bus bar 4.1, 4.2 First and second busbar sections 5. Second bus bar 5.3, 5.5 First and second rise angle busbar sections 6. Conductive coating 7. Coated printed area 7.1, 7.2 First and second adjustable coated printed areas 7.3, 7.4 Adjustable coated printed area with rightward upward angle 7.5, 7.6 Adjustable coated printed area with leftward upward angle 7.7,7.8 Adjustable coated print area of ​​the first and second silver dots 8. Coated glass portion 9. Data transmission window 11. Second glass sheet 13. Ply material for the intermediate layer A Center temperature measurement point on the center line B Busbar top angle temperature measurement point Hot spot on the side of the H sensor area R7 Adjustable coated print area 7.1, 7.3 and coating not aligned in a straight line Resistance to the printed area R8 Adjustable coated print area 7.1, 7.3 and coating not aligned in a straight line Resistance to the glass portion Resistance to the coated printed area below R7' and R8 R7.1 Resistance to the first adjustable coated printed portion 7.1 R8.1 Lower coating of the first adjustable coated printed area 7.1 Resistance to the glass portion Resistance to the coated printed portion below R7.1' and R8.1 R7.3' Resistance to the adjustable coated printed portion 7.3 with rise angle R8.3 Adjustable upward angle coated printed area 7.3 Upper coating Resistance to the glass portion Resistance to the coated printed area below R7.3 R8.1

Claims

1. Glazing 1, A first glass sheet 2 having a surface, The printed layer 3 on a part of the surface of the first glass sheet 2, On a portion of the printed layer 3 that forms the coated printed portion 7 and coating A conductive material on a part of the surface of the first glass sheet 2 that forms the glass portion 8 The coating 6, The first conductive coating 6 is electrically in contact with the conductive coating 6 and is positioned on a different axis from it. The first and second busbars are provided with second busbar sections 4.1, 4.2, 5.3, and 5.

5. Subaru 4, 5 and Adjustable coated printed portion 7 between the first and second busbars 4 and 5 . The first or second busbar portions 4.1, 4.2, which form 1, 7.3, 7.5 The first printed layer portions 3.1, 3.3, and 3.5 adjacent to 5.3 and 5.5, Glazing 1, which includes the above.

2. The first and second busbars 4 and 5 are arranged on the printed layer 3 as described in claim 1. Glazing 1.

3. The conductive coating 6 comprises a data transmission window 9 which is at least partially missing. The glazing 1 according to claim 1.

4. The data transmission window 9 is the first or second busbar portion 4.1, 4.2, 5.3, 5.5 is positioned between the opposing busbars 4 and 5, the glazing 1 according to claim 3. 。

5. The data transmission window 9 is the first or second busbar portion 4.1, 4.2, 5.3, 5.5 and the adjacent edge of the glazing 1, the gray according to claim 3. Zing 1.

6. A second adjustable coated print between the first and second busbars 4 and 5 In the first printed layer portions 3.1, 3.3, and 3.5 that form portions 7.2, 7.4, and 7.6 Any of claims 1 to 5, comprising adjacent second printed layer portions 3.2, 3.4, and 3.

6. Glazing 1 as described in item 1.

7. The first or second busbar portions 4.1, 4.2, 5.3, 5.5 are the first or This is a line parallel to the second busbars 4, 5 or to the first or second busbars 4, 5. Claims 1 to 6, which are formed as inclined lines or as curved shapes. Glazing 1 as described in any one of the items.

8. The first adjustable coated printed portion 7.1, 7.3, 7.5 or the second The adjustable coated printed sections 7.2, 7.4, and 7.6 are rectangular, square, Formed as a triangular, polygonal, or elliptical cross-section, as described in any one of claims 1 to 7. Glazing 1.

9. The first adjustable coated printed portion 7.1, 7.3, 7.5 or the second The adjustable coated printed portions 7.2, 7.4, and 7.6 of the glazing The arrangement described in any one of claims 1 to 8, which is located in the center or at least one corner of 1. Glazing 1.

10. The first or second low-sheet resistance coating printed portions 7.7, 7.8 are formed by the The coating print portion 7 has a printed silver dot pattern that makes electrical contact with it. Glazing 1 as described in any one of items 1 through 9.

11. The first and second bus bars 4 and 5 are provided with frit and at least 80% silver. Printed using a screen printing paste, as described in any one of claims 1 to 10. Glazing 1.

12. The coated printed portion 7 has an impedance of 1 to 300 Ω / □, preferably 2.5 to 120 Ω / □, most preferably a sheet resistance in the range of 3 to 8 Ω / □ and an interface resistance in the range of 1 to 30%. Glazing 1 according to any one of claims 1 to 11, having an expanded area ratio Sdr 。

13. To form laminated glass, a ply 13 of intermediate layer material is used to form the first glass sheet 2. The invention relates to any one of claims 1 to 12, comprising a bonded second glass sheet 11. Glazing 1.

14. The steps include preparing a first glass sheet 2 having a surface, The steps include printing an insulating layer 3 on a portion of the surface of the first glass sheet 2, On a portion of the printed layer 3 that forms the coated printed portion 7 and the coating A conductive material is placed on a portion of the surface of the first glass sheet 2 that forms the glass portion 8. The step of depositing coating 6, The first conductive coating 6 is electrically in contact with the conductive coating 6 and is positioned on a different axis from it. The first and second busbars 4 are provided with second busbar portions 4.1, 5.3, and 5.

5. , 5 steps of providing, First printed layer portion adjacent to the first or second busbar portions 4.1, 5.3, 5.5 Distributed by placing busbars 3.1, 3.3, and 3.5 between the first and second busbars 4 and 5 The steps include forming the adjustable coated printed portions 7.1, 7.3, and 7.5, A method for producing the glazing 1 according to claim 1, including the method described in claim 1.

15. Use of the glazing according to claims 1 to 13 as a window for a building or a vehicle.

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