Uniformly heated transparent conductive film glass

Abstract

The application discloses a kind of transparent conductive film glass of uniform heating, including transparent conductive film layer adhered on glass plate, and transparent conductive film layer lower part is equipped with communication window, and transparent conductive film layer left and right sides are electrically connected with first power supply by first busbar, and transparent conductive film layer upper and lower ends are electrically connected with second power supply by second busbar, the first gradual change portion thickness located in the left and right sides of communication window increases along the direction away from communication window, the second gradual change portion thickness located in the lower end of communication window decreases downward, and the second gradual change portion thickness decreases along the direction of left and right sides from middle, the present application realizes the transmission of wireless data by setting communication window, and first busbar transports current when deicing, reaches the intensive heating of thick area of frost by enhancing hot spot, and second busbar transports current when defogging, eliminates hot spot and cold spot, avoids the problem that the service life of transparent conductive film layer is affected by uneven heating.

Description

Technical Field

[0001] This invention relates to the field of glass heating technology, specifically to a transparent conductive film glass that is heated uniformly. Background Technology

[0002] Glass is an essential everyday item used in every household, whether for residential or automotive applications. As the demand for glass increases, functional glass plays a more and more important role in people's lives. Defogging glass, as a type of functional glass, is widely used in airplanes, ships, trains, automobiles, and many other fields. Currently, most existing defogging glass is made by embedding several thin electric heating wires within the interlayer of laminated glass. Heating is achieved when electricity is applied. However, using electric heating wires for defogging results in uneven heating, poor defogging effect, and the heating wires can also interfere with visibility, affecting the safety of the glass.

[0003] In the prior art, a defogging glass with uniform heating, disclosed in CN215581770U, includes a first glass substrate and a second glass substrate. The first and second glass substrates are arranged opposite each other and have the same structure. An insulating rubber wrapping strip is provided between the first and second glass substrates. The insulating rubber wrapping strip is snapped and fixedly connected between the first and second glass substrates. A current busbar is wrapped and fixedly connected to the inner side of the insulating rubber wrapping strip. A transparent electric heating film is fixedly connected to the inner side of the current busbar. The two sides of the transparent electric heating film are fixedly connected to the opposite side of the first and second glass substrates, respectively. Conductive strips are fixedly connected around the current busbar. This method provides uniform heating, improves the defogging effect, does not interfere with the view, and improves the safety of the glass.

[0004] However, existing technologies still have significant drawbacks. For example, in cold winter weather, frost and ice will form on the car windshield, and the frost on the lower part of the windshield is thicker than that on the upper part. Therefore, more heat is needed to remove the frost from the lower part of the windshield. However, existing technologies heat the entire surface evenly, which cannot achieve a targeted defrosting effect. In addition, the transparent electric heating film has a strong electromagnetic shielding effect, which is not conducive to the transmission of wireless data in the car. Summary of the Invention

[0005] The purpose of this invention is to provide a transparent conductive film glass that is heated uniformly, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A transparent conductive film glass with uniform heating includes a transparent conductive film layer adhered to a glass plate. The lower part of the transparent conductive film layer has at least one communication window. The left and right sides of the transparent conductive film layer are electrically connected to a first power source through a first busbar. The upper and lower ends of the transparent conductive film layer are electrically connected to a second power source through a second busbar. Only one of the first power source and the second power source can supply power to the transparent conductive film layer at the same time.

[0008] The transparent conductive film layer is a flat section with at least one set of adjustment parts, and the flat section and the adjustment parts are electrically connected. The adjustment parts and the communication window are arranged in a one-to-one correspondence. The adjustment part includes two first gradient parts and one second gradient part. The two first gradient parts are symmetrically arranged on the left and right sides of the communication window. The thickness of the two first gradient parts gradually increases in the direction away from the communication window. The side wall of the first gradient part away from the communication window is flush with the flat section. The second gradient part is located at one end of the communication window near the second busbar used for receiving current. The thickness of the second gradient part gradually decreases in the direction near the second busbar used for receiving current. The end of the second gradient part near the second busbar used for receiving current is flush with the flat section. The thickness of the second gradient part gradually decreases from the middle to the left and right sides. The left and right side walls of the second gradient part are flush with the flat section.

[0009] Preferably, the current between the two second busbars is transmitted in a top-to-bottom direction, and the second gradient section is located at the lower end of the communication window.

[0010] Preferably, the current between the two first busbars is transmitted in a left-to-right direction.

[0011] Preferably, the adjusting part and the flat part are integrally formed.

[0012] Preferably, the left sidewall of the second gradient portion is vertically aligned with the left sidewall of the first gradient portion on the left side of the communication window, and the right sidewall of the second gradient portion is vertically aligned with the right sidewall of the first gradient portion on the right side of the communication window.

[0013] Preferably, the output voltage of the first power supply is greater than the output voltage of the second power supply.

[0014] Preferably, there are at least two communication windows, and the communication windows are spaced apart from left to right.

[0015] Preferably, both the first busbar and the second busbar are electrically connected at the edge of the transparent conductive film layer, and the first busbar and the first power source are electrically connected by a wire, and the second busbar and the second power source are also electrically connected by a wire.

[0016] Preferably, the glass plate includes an inner glass layer and an outer glass layer spaced apart, and a transparent conductive film layer is located between the inner glass layer and the outer glass layer, and a thermoplastic intermediate layer is also filled between the inner glass layer and the outer glass layer.

[0017] Preferably, the transparent conductive film layer is located between the inner glass layer and the thermoplastic intermediate layer.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The transparent conductive film glass with uniform heating of the present invention realizes wireless data transmission by setting a communication window. Through the coordinated arrangement of a first gradient section, a second gradient section, a first busbar, and a second busbar, the first busbar supplies current during defrosting, thereby enhancing the heating of areas with thicker frost by strengthening hot spots, increasing the melting speed of thicker frost at the bottom, and achieving a targeted frost removal effect. During defogging, the second busbar supplies current to eliminate hot and cold spots, avoiding the problem of uneven heating of the transparent conductive film layer, which affects its service life. Attached Figure Description

[0020] Figure 1 This is a schematic diagram showing the distribution of the communication window on the transparent conductive film layer in this invention;

[0021] Figure 2 This is a schematic diagram of the transparent conductive film layer adhering to the inner glass layer in this invention;

[0022] Figure 3 This is a three-dimensional schematic diagram showing the positional distribution of the adjustment unit and the communication window in this invention;

[0023] Figure 4 This is a schematic diagram of the film thickness in and around the communication window in this invention.

[0024] In the figure: 1 transparent conductive film layer, 11 first gradient section, 12 second gradient section, 2 communication window, 3 first busbar, 4 second busbar, 5 inner glass layer, 6 outer glass layer, 7 thermoplastic intermediate layer. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figure 1-4 The present invention provides a technical solution:

[0027] A uniformly heated transparent conductive film glass includes an inner glass layer 5 and an outer glass layer 6 spaced apart. A transparent conductive film layer 1 is sputtered on the side of the inner glass layer 5 closest to the outer glass layer 6. The transparent conductive film layer 1 can be one or a combination of a metal layer, a metal alloy layer, or a metal oxide layer. The metal layer can be gold (Au), silver (Ag), copper (Cu), aluminum (Al), or molybdenum (Mo). The metal alloy layer can be a silver alloy. The metal oxide layer can be indium tin oxide, fluorine-doped tin dioxide, aluminum-doped tin dioxide, gallium-doped tin dioxide, boron-doped tin dioxide, tin-zinc oxide, or... Tin oxide doped with antimony is used to make the transparent conductive film layer 1 release heat when electricity is applied. A thermoplastic interlayer 7 is filled between the inner glass layer 5 and the outer glass layer 6. The thermoplastic interlayer 7 can be made of polycarbonate (PC), polyvinyl chloride (PVC), polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polyacrylate (PA), polymethyl methacrylate (PMMA), or polyurethane (PUR). The thermoplastic interlayer 7 evenly releases the heat of the transparent conductive film layer 1 to the outer glass layer 6. At the same time, the thermoplastic interlayer 7 also plays a shock absorption and buffering role, improving the stability between the inner and outer glass layers.

[0028] The transparent conductive film layer 1 has first busbars 3 electrically connected to both its left and right sidewalls. These first busbars 3 are electrically connected to an external first power source via wires. When the first power source is turned on, current flows through the left-side first busbar 3 into the transparent conductive film layer 1, flowing from left to right and causing the transparent conductive film layer 1 to heat up. After passing through the transparent conductive film layer 1, the current flows out from the right-side first busbar 3. The upper and lower endwalls of the transparent conductive film layer 1 are electrically connected to second busbars 4, and these second busbars 4 are electrically connected to an external second power source. When the second power supply is turned on, the current enters the transparent conductive film layer 1 through the upper second busbar 4 and flows from top to bottom in the transparent conductive film layer 1, causing the transparent conductive film layer 1 to heat up. After the current flows through the transparent conductive film layer 1, it flows out from the lower second busbar 4. In this embodiment, only one of the first power supply and the second power supply supplies power to the transparent conductive film layer 1 at the same time. Both the first power supply and the second power supply are DC power supplies with control switches. By opening and closing the control switches, the first power supply or the second power supply can supply power to the transparent conductive film layer 1.

[0029] The transparent conductive film layer 1 has at least one communication window 2 at its lower part. The communication window 2 is located in the area of ​​the glass plate where the frost is thick. The communication window 2 is a groove formed by removing part of the transparent conductive film layer 1 through physical grinding or chemical etching. This facilitates the transmission of wireless signals through the communication window 2. In this embodiment, there are two communication windows 2, which are spaced apart on the left and right. The communication window 2 has a square groove structure. Of course, other structures such as triangular, pentagonal or other structures are also possible. The multiple communication windows 2 spaced apart on the left and right reduce the degree of hot spots and cold spots formed when the transparent conductive film layer 1 is passed through from top to bottom.

[0030] The transparent conductive film layer 1 is a flattening section with two sets of adjustment sections, and the two sets of adjustment sections and two communication windows 2 are arranged in a one-to-one correspondence. The flattening section and the adjustment section are electrically connected. In this embodiment, the flattening section and the adjustment section are integrally sputtered. Specifically, the thickness of each region of the transparent conductive film layer 1 can be controlled by adjusting the running speed of the target material and the sputtering speed. For example, the prior art with publication number "CN104302026B" has given an implementation method for sputtering film layers of different thicknesses. Compared with the step-by-step sputtering of the flattening section and the adjustment section, the sputtering efficiency is improved, and the overall thickness of the transparent conductive film layer 1 is also improved. The body's impact resistance adjustment part includes two first gradient parts 11 and one second gradient part 12. The two first gradient parts 11 are symmetrically arranged on the left and right sides of the communication window 2. The thickness of the two first gradient parts 11 gradually increases in the direction away from the communication window 2. The side wall of the first gradient part 11 away from the communication window 2 is flush with the flat part. The greater the thickness of a certain area of ​​the first gradient part 11, the smaller the resistance of that area. That is, the resistance of the side area of ​​the first gradient part 11 away from the communication window 2 is the same as that of the flat part. The resistance of the first gradient part 11 gradually increases in the direction closer to the communication window 2.

[0031] The second gradient section 12 is located at the lower end of the communication window 2, and its thickness gradually decreases downwards. The lower end wall of the second gradient section 12 is flush with the flat section, so that the resistance of the second gradient section 12 gradually increases downwards until it matches the resistance of the flat section. Alternatively, the second gradient section 12 can be located at the upper end of the communication window 2, and the current supplied by the second power source passes through the transparent conductive film layer 1 from bottom to top. In this case, the thickness of the second gradient section 12 gradually decreases upwards, and the upper end wall of the second gradient section 12 is flush with the flat section, so that the resistance of the second gradient section 12 gradually increases upwards until it matches the resistance of the flat section. Another option is for the thickness of the second gradient section 12 to gradually decrease from the center to the left and right sides, and the left and right side walls of the second gradient section 12 to be flush with the flat section. The resistance of the gradient section 12 gradually increases from the middle to the left and right sides until it is the same as the resistance of the flat section. In this embodiment, the left side wall of the second gradient section 12 is aligned vertically with the left side wall of the first gradient section 11 on the left side of the communication window 2, and the right side wall of the second gradient section 12 is aligned vertically with the right side wall of the first gradient section 11 on the right side of the communication window 2. This arrangement facilitates the integral sputtering formation of the adjustment section. This embodiment provides an implementation method for the film thickness variation of the first gradient section 11, the second gradient section 12, and the flat section in and around the communication window 2. The 0 thickness position is the position of the communication window 2, the film thickness of the flat section is 2.7 micrometers, the film thickness of the first gradient section gradually changes from 0 to 2.7 micrometers, and the film thickness of the second gradient section 12 gradually changes from 2.7 to 3.9 micrometers.

[0032] When the weather is too cold and the outer glass layer 6 freezes, the first power supply is turned on, so that the current flows from left to right through the transparent conductive film layer 1 to generate heat, thereby defrost the outer glass layer 6. When the current passes through the communication window 2, since the transparent conductive film layer 1 at the communication window 2 has been removed, the current changes direction and flows through the flat part above the communication window 2 and the second gradient part 12 below the communication window 2. This increases the current at the flat part above the communication window 2 and the second gradient part 12 below the communication window 2, forming hot spots. Since the resistance at the second gradient part 12 is less than the resistance at the flat part, the current in the flat part below the second gradient part 12 converges to the second gradient part 12, further increasing the hot spot state at the second gradient part 12. This further increases the heating amount below the communication window 2, thereby improving the heating and melting efficiency of the thicker frost layer at the bottom of the outer glass layer 6, achieving the effect of targeted heating and melting of frost.

[0033] After the frost on the outer glass layer 6 melts, the first power supply is turned off and the second power supply is turned on, so that the current flows from top to bottom through the transparent conductive film layer 1 to heat it, thereby defogging the outer glass layer 6. In this embodiment, the output voltage of the first power supply is greater than the output voltage of the second power supply, so as to achieve targeted heating for defrost removal and defogging, avoiding the problem of ineffective overheating during defogging, which would reduce the service life of the transparent conductive film layer 1 and waste energy. When the current passes through the communication window 2, because the transparent conductive film layer 1 at the communication window 2 has been removed, the current changes direction and flows through the first gradient section 11 on the left and right sides of the communication window 2. If the first gradient section 11 is not treated, the current will accumulate at the first gradient section and form a hot spot. However, in this embodiment, the resistance of the first gradient section 11 decreases along the direction away from the communication window 2 until it is the same as that of the flat section, so that the current accumulated at the first gradient section 11 is diverted to the flat section, thereby eliminating the hot spot formed by the first gradient section 11 due to excessive current accumulation. The problem is that when current flows through the first gradient section and continues downward, without processing the second gradient section 12, insufficient current will cause cold spots to form at the second gradient section 12, especially in the upper middle region of the second gradient section 12. However, in this embodiment, the resistance of the second gradient section 12 increases from the middle to the left and right sides until it is the same as the flat section. This causes the current in the first gradient section 11 and the flat section to converge at the second gradient section 12, thereby eliminating the problem of cold spots forming at the second gradient section 12. Furthermore, in this embodiment, the resistance of the second gradient section 12 increases from top to bottom until it is the same as the flat section, thereby causing more current to converge in the upper middle region of the second gradient section 12. This eliminates the most serious problem of cold spots in the upper middle region of the second gradient section 12, thus solving the problem of hot and cold spots in the transparent conductive film layer 1 caused by the communication window 2, and avoiding the problem of uneven heating affecting the service life of the transparent conductive film layer 1 and the inner and outer glass layers.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A uniformly heated transparent conductive film glass comprising a transparent conductive film layer (1) adhered to a glass sheet, characterized by: The transparent conductive film layer (1) is provided with not less than one communication window (2) in the lower part, and the left and right sides of the transparent conductive film layer (1) are electrically connected with a first power supply through a first bus bar (3), and the upper and lower ends of the transparent conductive film layer (1) are electrically connected with a second power supply through a second bus bar (4), and only one of the first power supply and the second power supply supplies power to the transparent conductive film layer (1) at the same time; The transparent conductive film layer (1) is provided with not less than one set of adjusting parts, and the adjusting parts and the flat parts are electrically connected, and the adjusting parts and the communication windows (2) are one-to-one correspondingly arranged, the adjusting part includes two first gradient parts (11) and one second gradient part (12), and the two first gradient parts (11) are symmetrically arranged on the left and right sides of the communication window (2), and the thickness of the two first gradient parts (11) gradually increases in the direction away from the communication window (2), and the side wall of the first gradient part (11) away from the communication window (2) is flush with the flat part, the second gradient part (12) is located at one end of the communication window (2) close to the second bus bar (4) for receiving current, and the thickness of the second gradient part (12) gradually decreases in the direction close to the second bus bar (4) for receiving current, and one end of the second gradient part (12) close to the second bus bar (4) for receiving current is flush with the flat part, the thickness of the second gradient part (12) gradually decreases in the direction from the middle to the left and right sides, and the left and right side walls of the second gradient part (12) are flush with the flat part; The current between the two second bus bars (4) is transmitted in the direction from top to bottom, and the second gradient part (12) is located at the lower end of the communication window (2); The current between the two first bus bars (3) is transmitted in the direction from left to right.

2. The uniformly heated transparent conductive film glass of claim 1, wherein: The adjusting part and the flat part are integrally formed.

3. The uniformly heated transparent conductive film glass of claim 1, wherein: The left side wall of the second gradient part (12) is aligned with the left side wall of the first gradient part (11) on the left side of the communication window (2), and the right side wall of the second gradient part (12) is aligned with the right side wall of the first gradient part (11) on the right side of the communication window (2).

4. The uniformly heated transparent conductive film glass of claim 1, wherein: The output voltage of the first power supply is greater than the output voltage of the second power supply.

5. The uniformly heated transparent conductive film glass of claim 4, wherein: The communication window (2) is not less than two, and the communication windows (2) are arranged in the direction from left to right.

6. The uniformly heated transparent conductive film glass according to any one of claims 1-5, wherein: The first bus bar (3) and the second bus bar (4) are electrically connected at the edge of the transparent conductive film layer (1), and the first bus bar (3) and the first power supply are electrically connected through a wire, and the second bus bar (4) and the second power supply are also electrically connected through a wire.

7. The uniformly heated transparent conductive film glass of claim 6, wherein: The glass plate includes spaced apart inner glass layer (5), outer glass layer (6), and the transparent conductive film layer (1) is located between the inner glass layer (5) and the outer glass layer (6), and the inner glass layer (5) and the outer glass layer (6) are also filled with a thermoplastic intermediate layer (7).

8. The uniformly heated transparent conductive film glass of claim 7, wherein: The transparent conductive film layer (1) is located between the inner glass layer (5) and the thermoplastic intermediate layer (7).

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