Vehicle film and manufacturing method thereof

Abstract

According to one embodiment, a vehicle film can include a liquid crystal layer, a first conductive polymer layer laminated on a first surface of the liquid crystal layer, a second conductive polymer layer laminated on a second surface opposite to the first surface of the liquid crystal layer, a first substrate layer on the first conductive polymer layer, a second substrate layer on the second conductive polymer layer, a first electrode layer between the first conductive polymer layer and the first substrate layer, and a second electrode layer between the second conductive polymer layer and the second substrate layer. The film can have a curvature by being at least partially bent.

Description

[Technical Field]

[0001] Various embodiments described below relate to vehicle films and methods of making same. [Background technology]

[0002] To meet the needs of users in a vehicle, a film can be attached to the vehicle window. The film can include a smart film whose transparency can be adjusted by user input. For example, the film can be attached to a glass roof on the top of a vehicle to provide a variety of user experiences to users in the vehicle. The film may need to be manufactured so that it can be easily attached to the vehicle window by a user.

[0003] The preceding information may be provided as related art to aid in the understanding of the present disclosure. No assertion or determination is being made as to the applicability of any of the preceding as prior art pertaining to the present disclosure. Summary of the Invention [Means for solving the problem]

[0004] According to one embodiment, a vehicle film can include a liquid crystal layer, a first conductive polymer layer laminated on a first surface of the liquid crystal layer, a second conductive polymer layer laminated on a second surface opposite to the first surface of the liquid crystal layer, a first substrate layer on the first conductive polymer layer, a second substrate layer on the second conductive polymer layer, a first electrode layer between the first conductive polymer layer and the first substrate layer, and a second electrode layer between the second conductive polymer layer and the second substrate layer. The film can have a curvature by being at least partially bent.

[0005] According to one embodiment, a method for manufacturing a vehicle film can include the steps of preparing a film fabric, heating the prepared film fabric, vacuum-forming the heated film fabric, and cutting the vacuum-formed film fabric. [Brief explanation of the drawings]

[0006] [Figure 1a] 1 is a top plan view of an exemplary vehicle. [Figure 1b] 1 illustrates the interior structure of an exemplary vehicle. [Figure 2] 1 is a flow chart illustrating an exemplary film fabrication process. [Figure 3] FIG. 1 is a cross-sectional view of an exemplary film. [Figure 4] 1 illustrates an exemplary film heating process. [Figure 5] 1 illustrates an exemplary film vacuum forming process. [Figure 6] 1 shows an exemplary film with electrical wires connected thereto. [Figure 7] 1 is a flowchart illustrating steps for installing an exemplary film on a vehicle. [Figure 8]1 shows the interior structure of a vehicle with an exemplary film applied thereto. DETAILED DESCRIPTION OF THE INVENTION

[0007] Figure 1a is a top plan view of an exemplary vehicle, and Figure 1b shows the interior structure of the exemplary vehicle.

[0008] 1a and 1b, a vehicle 10 may include a sunroof 11. A film 100 may be attached to the vehicle 10.

[0009] According to one embodiment, the sunroof 11 may be positioned on top of the vehicle. For example, the sunroof 11 may be positioned on the vehicle 10 so as to be positioned over a user in the vehicle. For example, the sunroof 11 may include a substantially transparent material (e.g., glass) to provide the user in the vehicle 10 with visibility to the environment outside the vehicle 10. For example, a sunroof 11 that provides the user in the vehicle 10 with visibility to the environment outside the vehicle 10 may be referred to as, but is not limited to, a glass roof. The vehicle 10 may need to adjust the visibility provided through the sunroof 11 to meet the needs of the user in the vehicle 10.

[0010] According to one embodiment, the film 100 may be attached to the sunroof 11. For example, the sunroof 11 may include an outer surface 11a facing the outside of the vehicle 10 and an inner surface 11b facing the inside of the vehicle 10, opposite the outer surface 11a. The film 100 may be attached to one of the outer surface 11a and the inner surface 11b of the sunroof 11. For example, the film 100 may include a substantially transparent or translucent material. The film 100 may be configured such that the transparency of the film 100 is adjustable by a user. The change in the transparency of the film 100 will be described below with reference to FIG. 3. For example, the film 100 may be configured such that the transparency of the film 100 changes depending on the strength of a current flowing through the film 100. The film 100, which changes transparency depending on the intensity of the current, may be called a smart film or a polymer dispersed liquid crystal (PDLC) film, but is not limited thereto.

[0011] According to one embodiment, the film 100 may be provided in the form of a fabric (e.g., film fabric 300 in FIG. 3 ) to be attached to the sunroof 11 of the vehicle 10. The film 100 may need to be processed into a shape corresponding to the shape of the sunroof 11 so that it can be easily attached to the sunroof 11 of the vehicle 10. For example, the film 100 may be provided in the form of a fabric and then cut to a size corresponding to the size of the sunroof 11 of the vehicle 10. For example, the film 100 may need to be cut to a size corresponding to the size of the sunroof 11 and then formed into a shape corresponding to the shape of the sunroof 11. For example, after the film 100 is formed into a shape corresponding to the shape of the sunroof 11, it may be necessary to connect an electrical wire (e.g., electrical wire 610 in FIG. 6 ) to the film 100 to supply power to the inside of the film 100. The film 100 is provided in a shape corresponding to the shape of the sunroof 11, which varies depending on the vehicle 10, thereby eliminating unnecessary processing steps for the film 100. The film 100 is provided with a structure in which an electric wire for supplying power is connected inside the film 100, thereby simplifying the process of installing the film 100 in the vehicle 10. A manufacturing process for the film 100 to simplify the process of installing the film 100 in the vehicle 10 will be described below with reference to FIG. 2.

[0012] Although the film 100 has been described as being attached to the sunroof 11 of the vehicle 10, the present invention is not limited to this. Although not shown, the film 100 may be attached to multiple windows of the vehicle 10, including the sunroof 11 (e.g., a front windshield, a rear windshield, and side windows). The film 100 may be configured to adjust the visibility provided through at least some of the multiple windows by being attached to at least some of the multiple windows, which are transparent.

[0013] According to the above-described embodiment, the film 100 for the vehicle 10 is attached to the sunroof 11, thereby reducing heat transferred from the outside of the vehicle 10 to the inside of the vehicle 10 through the sunroof 11. The film 100 is configured to have variable transparency, thereby providing a variety of user experiences to a user riding in the vehicle 10.

[0014] FIG. 2 is a flow chart showing an exemplary film fabrication process.

[0015] The manufacturing process of FIG. 2 may be a manufacturing process for processing a film (e.g., film 100 of FIG. 1b) into a shape corresponding to the shape of a sunroof (e.g., sunroof 11 of FIG. 1a) of a vehicle (e.g., vehicle 10 of FIG. 1a) before the film is attached to the sunroof 11.

[0016] In step 201, a film fabric (e.g., film fabric 300 in FIG. 3) can be prepared to be processed into film 100 having a shape corresponding to the shape of sunroof 11 of vehicle 10. For example, film fabric 300 may be provided in a laminated structure of multiple layers, as shown in FIG. 3. For example, film fabric 300 prepared in step 201 may include a layer including a material with relatively high heat resistance for thermoforming in step 203.

[0017] In step 203, the film fabric 300 may be heated. The film fabric 300 may be easily deformable by being heated. For example, the film fabric 300 may be heated by a heater (e.g., the first heater 410 and the second heater 420 in FIG. 4). For example, step 203 may include moving the film fabric 300 between the first heater 410 and the second heater 420 at a specified speed. The time during which the film fabric 300 is placed between the first heater 410 and the second heater 420 may be, but is not limited to, within a range of 10 to 20 seconds. For example, step 203 may include preheating the film fabric 300 within a specified temperature range to reduce deformation of the film fabric 300 due to heating. Step 203 may include preheating the film fabric 300 within a temperature range higher than the specified temperature range after preheating the film fabric 300.

[0018] In step 205, the heated film fabric 300 may be vacuum formed. By vacuum forming, the film fabric 300 may be formed into a shape corresponding to the shape of the sunroof 11 of the vehicle 10. For example, at least a portion of the film fabric 300 may be formed to have a curved surface corresponding to the curved surface of the sunroof 11 via a curved surface (e.g., curved surface 511 in FIG. 5) in a mold (e.g., mold 510 in FIG. 5). For example, at least a portion of the film fabric 300 may be pressed against the mold 510 by a press (e.g., press 520 in FIG. 5). After at least a portion of the film fabric 300 is interposed between the mold 510 and the press 520 by the press 520, the air between the mold 510 and the press 520 may flow out of the mold 510, thereby pressing the at least a portion of the film fabric 300 against the curved surface 511 in the mold 510. After being heated in step 203 , the at least a portion of the film fabric 300 is pressed against the curved surface 511 of the mold 510 , so that it can be deformed into a shape corresponding to the shape of the curved surface 511 .

[0019] In step 207, the vacuum-formed film fabric 300 may be cut. At least a portion of the film fabric 300 may be cut to a size substantially the same as or similar to the size of the sunroof 11 of the vehicle 10. For example, in step 205, a processing region (e.g., processing region 301 in FIG. 5 ) of the film fabric 300 may be pressed against a mold 510 by a press 520. After the processing region 301 is vacuum-formed in step 205, it may be cut from the film fabric 300 in step 207. According to one embodiment, step 207 may include, after cutting the processing region 301 from the film fabric 300, separating a second portion (e.g., second portion 301b in FIG. 5 ) of the processing region 301 having a curvature corresponding to the shape of the sunroof 11 of the vehicle 10 from a first portion (e.g., first portion 301a in FIG. 5 ) surrounding the second portion. For example, the processing area 301 can be separated from the film substrate 300 in step 207. The second portion 301b in the processing area 301 can be cut from the first portion 301a after the processing area 301 is separated from the film substrate 300. The second portion 301b can be separated from the first portion 301a to form the film 100 having a shape corresponding to the shape of the sunroof 11. The second portion 301b can be separated from the first portion 301a to form the film 100 having substantially the same size as the sunroof 11.

[0020] According to one embodiment, step 207 is to vacuum-form the film fabric 300 including the curvature portion to a length of 0.5 m. 2 2m from 2For example, the length of the processing area 301 cut from the film material 300 may be within a range of 1000 mm to 2000 mm. The width of the processing area 301 may be within a range of 700 mm to 1500 mm. However, the processing area 301 is not limited thereto. For example, through step 205, the processing area 301 may include a first portion 301a that is substantially flat and a second portion 301b that has a curvature due to the curved surface 511 of the mold 510. The processing area 301 including the first portion 301a and the second portion 301b may be cut from the film material 300 to a size within a range of 0.5 mm. 2 ~2m 2 It can be cut to have a size in the range of

[0021] In step 209, the electrode layers (e.g., first electrode layer 341, second electrode layer 342 in FIG. 3 ) in the cut film fabric 300 can be connected to an electric wire (e.g., electric wire 610 in FIG. 6 ). For example, the film fabric 300 can include a liquid crystal layer (e.g., liquid crystal layer 310 in FIG. 3 ), at least one conductive polymer layer (e.g., at least one conductive polymer layer 320 in FIG. 3 ) laminated to the liquid crystal layer 310, and at least one electrode layer (e.g., at least one electrode layer 340 in FIG. 3 ) disposed on the at least one conductive polymer layer 320. The at least one conductive polymer layer 320 and the at least one electrode layer 340 can be electrically connected to the electric wire 610 in step 209. For example, at least one conductive polymer layer 320 and at least one electrode layer 340 in second portion 301b separated from first portion 301a in step 207 can be connected to electric wire 610 in step 209. By providing film 100 in a structure connected to electric wire 610, it can be easily installed in vehicle 10.

[0022] According to the above-described embodiment, the manufacturing process of the film 100 can provide the film 100 in a shape corresponding to the shape of the sunroof 11 of the vehicle 10. The manufacturing process can provide the film 100 in a size corresponding to the size of the sunroof 11. The manufacturing process can include connecting the film 100 to an electric wire 610, thereby providing the film 100 in a structure that can be easily installed in the vehicle 10.

[0023] FIG. 3 is a cross-sectional view of an exemplary film.

[0024] 3, the film 100 may include a liquid crystal layer 310, at least one conductive polymer layer 320, at least one substrate layer 330, at least one electrode layer 340, and at least one coating layer 350. The film substrate 300 for processing into the film 100 may have substantially the same structure as the structure in which the multiple layers in the film 100 are stacked.

[0025] According to one embodiment, the liquid crystal layer 310 may include a plurality of liquid crystal particles 315. For example, the liquid crystal layer 310 may have a form in which the plurality of liquid crystal particles 315 are dispersed in a conductive polymer material. The conductive polymer material may provide the liquid crystal layer 310 with electrical conductivity. For example, the plurality of liquid crystal particles 315 in the liquid crystal layer 310 may be irregularly dispersed within the liquid crystal layer 310 when no current flows within the liquid crystal layer 310. The film 100 may be configured to be opaque by the irregularly dispersed plurality of liquid crystal particles 315 scattering light incident on the liquid crystal layer 310. For example, at least some of the plurality of liquid crystal particles 315 in the liquid crystal layer 310 may be aligned by having a specified direction when a current flows within the liquid crystal layer 310. The number of the plurality of liquid crystal particles 315 aligned in the specified direction may vary depending on the strength of the current flowing within the liquid crystal layer 310. The film 100 may be configured to be substantially transparent or translucent because at least a portion of the light incident on the liquid crystal layer 310 is transmitted through at least a portion of the liquid crystal particles 315 that align while the current flows in the liquid crystal layer 310. The film 100 may be configured such that the transparency of the film 100 is adjustable according to the intensity of the current flowing through the liquid crystal layer 310 because the number of the liquid crystal particles 315 that align varies depending on the intensity of the current.

[0026] According to one embodiment, at least one conductive polymer layer 320 may be laminated to the liquid crystal layer 310. For example, the at least one conductive polymer layer 320 may include a first conductive polymer layer 321 and a second conductive polymer layer 322. The first conductive polymer layer 321 may be laminated on a first surface 311 of the liquid crystal layer 310. The second conductive polymer layer 322 may be laminated on a second surface 312 of the liquid crystal layer 310 opposite the first surface 311. For example, the at least one conductive polymer layer 320 may cover at least a portion of the liquid crystal layer 310. For example, the at least one conductive polymer layer 320 may be in contact with the liquid crystal layer 310. For example, the at least one polymer layer 320 may be electrically connected to an electrical wire (e.g., electrical wire 610 in FIG. 6 ). When power is supplied to the at least one conductive polymer layer 320 via the electric wire 610, a current flows through the at least one conductive polymer layer 320 and the liquid crystal layer 310 in contact with the at least one conductive polymer layer 320.

[0027] For example, the at least one conductive polymer layer 320 may include a material having relatively high heat resistance. The at least one conductive polymer layer 320 may have ductility. The at least one conductive polymer layer 320 may include, but is not limited to, plastic. By including the at least one conductive polymer layer 320 having relatively high heat resistance, damage to the film fabric 300 due to heating in step 203 of FIG. 2 can be reduced. By including the conductive polymer layer 320 having ductility, the film fabric 300 can be configured to be easily deformable in step 205 of FIG. 2.

[0028] According to one embodiment, at least one substrate layer 330 can be disposed on at least one conductive polymer layer 320. It should be understood that, when an element is referred to as being "on" another element, it can be directly on the other element, or there can be intervening elements therebetween. For example, herein, "B disposed on A" can refer to "B disposed over A." For example, herein, "B disposed on A" can refer to "B facing A and spaced apart from A." For example, "at least one substrate layer 330 disposed on at least one conductive polymer layer 320" can refer to "at least one substrate layer 330 in contact with at least one conductive polymer layer 320." For example, "at least one substrate layer 330 disposed on at least one conductive polymer layer 320" may mean "at least one substrate layer 330 facing at least one conductive polymer layer 320 and spaced apart from the at least one conductive polymer layer 320."

[0029] For example, the at least one substrate layer 330 may include a first substrate layer 331 and a second substrate layer 332. The first substrate layer 331 may be disposed on the first conductive polymer layer 321. The second substrate layer 332 may be disposed on the second conductive polymer layer 322. For example, the at least one substrate layer 330 may form the appearance of the film 100 and / or the film fabric 300. For example, the at least one substrate layer 330 may include, but is not limited to, at least one of PET (Poly Ethylene Terephthlate), PC (Polycarbonate), PEN (Polyethylene Napthalene), PU (Polyurethane), and PI (Polyimide).

[0030] For example, the first conductive polymer layer 321 may be disposed between the first base layer 331 and the liquid crystal layer 310. The second conductive polymer layer 322 may be disposed between the second base layer 332 and the liquid crystal layer 310. For example, the first base layer 331 may be spaced apart from the first conductive polymer layer 321. Multiple layers may be interposed between the first base layer 331 and the first conductive polymer layer 321. The second base layer 332 may be spaced apart from the second conductive polymer layer 322. Multiple other layers may be interposed between the second base layer 332 and the second conductive polymer layer 322.

[0031] According to one embodiment, at least one electrode layer 340 may be disposed between at least one conductive polymer layer 320 and at least one substrate layer 330. For example, the at least one electrode layer 340 may include a first electrode layer 341 and a second electrode layer 342. The first electrode layer 341 may be disposed between the first conductive polymer layer 321 and the first substrate layer 331. The second electrode layer 342 may be disposed between the second conductive polymer layer 322 and the second substrate layer 332. For example, the first electrode layer 341 may be disposed on a first surface 311 of the liquid crystal layer 310. The second electrode layer 342 may be disposed on a second surface 312 of the liquid crystal layer 310 opposite the first surface 311.

[0032] For example, the at least one electrode layer 340 may be electrically connected to the electric wire 610. The at least one electrode layer 340 may be configured to receive power via the electric wire 610, thereby allowing current to flow through the liquid crystal layer 310 together with the at least one conductive polymer layer 320. For example, the at least one electrode layer 340 may include a material with relatively high rigidity. The at least one electrode layer 340 may include, but is not limited to, a metal. For example, the at least one electrode layer 340 may be at least partially oxidized by heating due to heat transferred from the liquid crystal layer 310 and / or the at least one conductive polymer layer 320. The at least one electrode layer 340 may be discolored or damaged by oxidation. The film 100 and / or film fabric 300 may require a structure to reduce oxidation of the at least one electrode layer 340.

[0033] According to one embodiment, the film 100 may include at least one coating layer 350 interposed between the at least one conductive polymer layer 320 and the at least one electrode layer 340. For example, the at least one coating layer 350 may include a first coating layer 351 and a second coating layer 352. The first coating layer 351 may be interposed between the first conductive polymer layer 321 and the first electrode layer 341. The second coating layer 352 may be interposed between the second conductive polymer layer 322 and the second electrode layer 342. For example, the first coating layer 351 may be coated on a surface of the first electrode layer 341 facing the liquid crystal layer 310. The second coating layer 352 may be coated on a surface of the second electrode layer 342 facing the liquid crystal layer 310.

[0034] For example, at least one coating layer 350 may separate the liquid crystal layer 310 and / or the at least one conductive polymer layer 320 from the at least one electrode layer 340. The at least one coating layer 350 may include a material with relatively low thermal conductivity. The at least one coating layer 350 may include, but is not limited to, urethane. For example, when a current flows through the liquid crystal layer 310 and / or the at least one conductive polymer layer 320, heat may be dissipated from the liquid crystal layer 310 and / or the at least one conductive polymer layer 320. By including at least one coating layer 350 between the at least one conductive polymer layer 320 and the at least one electrode layer 340, the film 100 may reduce heat transfer from the liquid crystal layer 310 and / or the at least one conductive polymer layer 320 to the at least one electrode layer 340. The at least one coating layer 350 can insulate heat from the liquid crystal layer 310 and / or the at least one conductive polymer layer 320 to the at least one electrode layer 340, thereby reducing damage to the at least one electrode layer 340 due to the heat.

[0035] According to one embodiment, the film 100 and / or the film substrate 300 may have a heat distortion temperature in the range of 350°C to 500°C. For example, the film 100 and / or the film substrate 300 may have a heat distortion temperature in the range of 350°C to 500°C by including a first conductive polymer layer 321 and a second conductive polymer layer 322, which have relatively high heat resistance. For example, the film 100 and / or the film substrate 300 may have a heat distortion temperature in the range of 350°C to 500°C by including a first coating layer 351 and a second coating layer 352, which have relatively low thermal conductivity. For example, the film 100 and / or the film substrate 300 may have an improved heat resistance by including at least one conductive polymer layer 320, at least one electrode layer 340, and at least one coating layer 350, instead of ITO (indium tin oxide) laminated on the liquid crystal layer 310. However, the present invention is not limited thereto. The film fabric 300 has a heat distortion temperature in the range of 350°C to 500°C, which can reduce damage to the film fabric 300 due to heating in step 203 of Fig. 2. The film 100 includes the at least one coating layer 350 and the at least one conductive polymer layer 320, which can increase the heat blocking rate of heat entering through the sunroof 11 of the film 100 while it is attached to the sunroof (e.g., sunroof 11 in Fig. 1a) of a vehicle (e.g., vehicle 10 in Fig. 1a).

[0036] According to the above-described embodiment, the film 100 includes at least one conductive polymer layer 320, thereby improving the heat resistance of the film 100. The film 100 includes at least one coating layer 350, thereby reducing damage to the at least one electrode layer 340 due to heat emitted from the liquid crystal layer 310 and the at least one polymer layer 320.

[0037] FIG. 4 shows an exemplary film heating process.

[0038] The heating process in FIG. 4 can refer to step 203 in FIG.

[0039] In step 400a, the film fabric 300 prepared in step 201 of FIG. 2 can be heated to a temperature within a first reference range. For example, step 400a can be a step of preheating the film fabric 300. For example, in step 400a, the film fabric 300 can be moved between a first heater 410 and a second heater 420. The film fabric 300 can pass between the first heater 410 and the second heater 420 at a specified speed. For example, in step 400a, the film fabric 300 can pass between a first region 410a of the first heater 410 and a second region 420a of the second heater 420. The first region 410a and the second region 420a can heat the film fabric 300 to a temperature within a first reference range. The temperature within the first reference range may be, but is not limited to, a range of 1 degree to 100 degrees.

[0040] In step 400b, the film fabric 300 heated to a temperature within a first reference range may be heated to a temperature within a second reference range higher than the temperature within the first reference range before being vacuum-formed in step 205 of FIG. 2. For example, in step 400b, the film fabric 300 may be heated by the first region 410a and the second region 420a, and then moved to be positioned between the third region 410b of the first heater 410 extending from the first region 410a and the fourth region 420b of the second heater 420 extending from the second region 420a. The third region 410b and the fourth region 420b may heat the film fabric 300 to a temperature within a second reference range higher than the temperature within the first reference range. The temperature within the second reference range may be, but is not limited to, a range of 100°C to 350°C. The film fabric 300 may be easily deformable by being heated to a temperature within a second reference range in step 400b.

[0041] According to the above-described embodiment, the step of heating the film fabric 300 includes heating the film fabric 300 to a temperature within a first reference range, thereby reducing damage to the film fabric 300. The step of heating the film fabric 300 includes heating the film fabric 300 to a temperature within a second reference range that is higher than the temperature within the first reference range, thereby providing a condition for the film fabric 300 to be easily molded in step 205.

[0042] FIG. 5 illustrates an exemplary film vacuum forming process.

[0043] The vacuum forming process of FIG. 5 can refer to step 205 of FIG.

[0044] 2 may be placed between a mold 510 having a curved surface 511 formed thereon and a press 520 facing the mold 510. For example, in step 500a, the processing area 301 of the film fabric 300 may be located on the curved surface 511 of the mold 510 having a shape corresponding to the sunroof (e.g., the sunroof 11 in FIG. 1a) of a vehicle (e.g., the vehicle 10 in FIG. 1a) and a support surface 512 surrounding the curved surface 511. The processing area 301 includes the curved surface 511 and the support surface 512 and may have a size corresponding to the size of one surface of the mold 510 facing the press 520.

[0045] In step 500b, the film fabric 300 may be pressed by a press 520 to be bonded to the mold 510. The space between the mold 510 and the press 520 may be sealed by the press 520. For example, the press 520 may press the processing area 301 on the mold 510 toward the mold 510, thereby sealing the space formed between the processing area 301 and the mold 510 with the curved surface 511 of the mold 510. According to one embodiment, in step 500b, air may be removed from the space between the mold 510 and the press 520. The film fabric 300 between the mold 510 and the press 520 may be pressed against the curved surface 511 of the mold 510 by removing the air between the mold 510 and the press 520. For example, the processing area 301 of the film fabric 300 may be pressed against the support surface 512 of the mold 510 by the press 520. In step 500b, air is removed between the processing area 301 and the curved surface 511 of the mold 510, so that at least a portion of the processing area 301 may be pressed against the curved surface 511. Since the processing area 301 is heated in step 203, it can be deformed into a shape corresponding to the shape of the curved surface 511 by being pressed against the curved surface 511.

[0046] In step 500c, the pressure applied by the press 520 to the film fabric 300 can be released. The processing area 301 of the film fabric 300 can include a first portion 301a pressed against the support surface 512 of the mold 510 and a second portion 301b pressed against the curved surface 511 of the mold 510. The second portion 301b can have a shape corresponding to the sunroof 11 of the vehicle 10 by being pressed against the curved surface 511. The processing area 301 including the first portion 301a and the second portion 301b can move between the mold 510 and the press 520 to be cut from the film fabric 300.

[0047] According to the above-described embodiment, the process of vacuum-forming the film fabric 300 includes a step of pressing the film fabric 300 against a mold 510 having a curved surface 511 formed thereon, thereby enabling at least a portion of the film fabric 300 (e.g., the processing area 301) to be molded into a shape corresponding to the shape of the sunroof 11 of the vehicle 10.

[0048] FIG. 6 shows an exemplary film with electrical wires connected to it.

[0049] Referring to FIG. 6, the film 100 may be connected to an electric wire 610. The film 100 may be, for example, in a form in which the processed region 301 and / or the second portion 301b of the processed region 301 having a curved shape are separated from the film substrate 300 as shown in FIG. 5. For example, the electric wire 610 may be electrically connected to at least some of the layers in the film 100. For example, referring to FIG. 3, one end of the electric wire 610 may be connected to at least one conductive polymer layer 320 and at least one electrode layer 340 of the film 100. By being provided in a form in which the film 100 is connected to the electric wire 610, the film 100 may be provided in a structure that can be easily installed in a vehicle (e.g., the vehicle 10 of FIG. 1a).

[0050] According to one embodiment, the film 100 is 0.5 m 2 ~2m2 For example, the length of the film 100 may be in the range of 1000 mm to 2000 mm. The width of the film 100 may be in the range of 700 mm to 1500 mm. However, the present invention is not limited to this. For example, the film 100 may be cut into a 0.5 mm length from the film fabric 300 via step 207 in FIG. 2 ~2m 2 The film 100 can be cut to have a size S of 0.5 m. 2 ~2m 2 By having a size S of 100 mm or less, the film 10 can be provided so as to be easily attached to the sunroof of the vehicle 10 (for example, the sunroof 11 in FIG. 1a).

[0051] According to the above-described embodiment, the film 100 is provided in a structure connected to the electric wire 610, and thus can be provided in a structure that can be easily installed in the vehicle 10. The film 100 has a size S within a specified range, and thus can be provided so as to be easily attached to the sunroof 11 of the vehicle 10.

[0052] FIG. 7 is a flow chart illustrating the procedure for installing an exemplary film on a vehicle.

[0053] 7, in step 701, the film provided through the process of FIG. 2 (e.g., film 100 of FIG. 1b) may be attached to a vehicle (e.g., vehicle 10 of FIG. 1a). For example, film 100 may be attached to the inner surface (e.g., inner surface 11b of FIG. 1a) of a sunroof (e.g., sunroof 11 of FIG. 1a) of vehicle 10 facing the interior of the vehicle 10. The film 100 includes a curvature so that it has a shape corresponding to the shape of the sunroof 11, and therefore can be easily attached to the sunroof 11. The film 100 has a size corresponding to the size of the sunroof 11, and therefore can be easily attached to the sunroof 11.

[0054] In step 703, an electric wire (e.g., electric wire 610 in FIG. 6 ) connected to film 100 may be connected to a controller (e.g., first controller 810 in FIG. 8 ). For example, one end of electric wire 610 may be electrically connected to at least one conductive polymer layer (e.g., at least one conductive polymer layer 320 in FIG. 3 ) and at least one electrode layer (e.g., at least one electrode layer 340 in FIG. 3 ) in film 100. The other end opposite to the one end of electric wire 610 may be connected to the controller. The controller may apply power to film 100 via the electric wire. The controller may be configured to control the intensity of current flowing in film 100, thereby adjusting the transparency of film 100.

[0055] According to the above-described embodiment, the film 100 is provided in a structure connected to the electric wire 610, thereby enabling it to be easily installed on the controller. The film 100 is provided in a shape corresponding to the sunroof 11 of the vehicle 10, thereby enabling it to be easily attached to the sunroof 11.

[0056] FIG. 8 shows the interior structure of a vehicle with an exemplary film applied.

[0057] Referring to FIG. 8 , a film 100 may be attached to the sunroof 11 of a vehicle 10. The film 100 may be connected to a first controller 810 via an electric wire 610. The first controller 810 may be configured to apply power to the film 100 via the electric wire 610. For example, the first controller 810 may include a power button 811 and an adjustment button 812. The first controller 810 may apply power to the film 100 or cut off the application of power to the film 100 via the power button 811. The first controller 810 may be configured to adjust the transparency of the film 100 by changing the intensity of the current flowing through the film 100 via the adjustment button 812 while power is being applied to the film 100.

[0058] According to one embodiment, the first controller 810 may be controlled by the second controller 820. For example, the second controller 820 may be configured to control the first controller 810 via wireless communication. The second controller 820 may be configured to control the first controller 810 to apply power within the film 100 or adjust the transparency of the film 100.

[0059] According to the above-described embodiment, the film 100 is provided in a structure connected to the electric wire 610, thereby enabling it to be easily installed on the controller. The film 100 is provided in a shape corresponding to the sunroof 11 of the vehicle 10, thereby enabling it to be easily attached to the sunroof 11.

[0060] According to the above-described embodiment, a vehicle film (e.g., film 100 in FIG. 1b) includes a liquid crystal layer (e.g., liquid crystal layer 310 in FIG. 3), a first conductive polymer layer (e.g., first conductive polymer layer 321 in FIG. 3) laminated on a first surface (e.g., first surface 311 in FIG. 3) of the liquid crystal layer, a second conductive polymer layer (e.g., second conductive polymer layer 322 in FIG. 3) laminated on a second surface (e.g., second surface 312 in FIG. 3) opposite to the first surface of the liquid crystal layer, and a first substrate layer on the first conductive polymer layer. The film may include a first conductive polymer layer (e.g., first substrate layer 331 in FIG. 3 ), a second substrate layer on the second conductive polymer layer (e.g., second substrate layer 332 in FIG. 3 ), a first electrode layer (e.g., first electrode layer 341 in FIG. 3 ) between the first conductive polymer layer and the first substrate layer, and a second electrode layer (e.g., second electrode layer 342 in FIG. 3 ) between the second conductive polymer layer and the second substrate layer. The film may have a curvature by being at least partially bent.

[0061] According to one embodiment, the film may further include a first coating layer (e.g., first coating layer 351 in FIG. 3) interposed between the first conductive polymer layer and the first electrode layer, and a second coating layer (e.g., second coating layer 352 in FIG. 3) interposed between the second conductive polymer layer and the second electrode layer. Each of the first coating layer and the second coating layer may include urethane.

[0062] In one embodiment, the first conductive polymer layer and the second conductive polymer layer may each comprise plastic, and the first electrode layer and the second electrode layer may each comprise metal.

[0063] The film according to one embodiment may have a heat deflection temperature in the range of 350 degrees Celsius to 500 degrees Celsius.

[0064] In one embodiment, the film is 0.5 m 2 ~2m 2 6. The size of the slit 100 may be (for example, S in FIG. 6).

[0065] According to one embodiment, a method for manufacturing a vehicle film can include the steps of preparing a film fabric, heating the prepared film fabric, vacuum-forming the heated film fabric, and cutting the vacuum-formed film fabric.

[0066] According to one embodiment, the step of heating the prepared film dough may include heating the prepared film dough to a temperature within a first reference range, and the step of heating the prepared film dough may include, after heating to the temperature within the first reference range, heating the film dough to a temperature within a second reference range that is higher than the temperature within the first reference range before vacuum-forming the film dough.

[0067] According to one embodiment, the step of vacuum-forming the heated film fabric may include a step of placing the heated film fabric between a mold having a curved surface and a press facing the mold. The step of vacuum-forming the heated film fabric may include a step of sealing the interior space of the mold by pressing the film fabric with the press. The step of vacuum-forming the heated film fabric may include a step of removing air from the interior of the sealed mold so that the film fabric is pressed against the curved surface.

[0068] According to one embodiment, the step of cutting the vacuum-formed film fabric comprises cutting the film fabric including the portion having a curvature after vacuum forming into a length of 0.5 mm. 2 2m from 2 The method may include cutting the material to a size within the range of 100 mm to 150 mm.

[0069] According to one embodiment, the film fabric may include a liquid crystal layer, at least one conductive polymer layer laminated on the liquid crystal layer, and at least one electrode layer disposed on the at least one conductive polymer layer, and the method may further include connecting electrical wires to the at least one conductive polymer layer and the at least one electrode layer.

[0070] It should be understood that the various embodiments of the present disclosure and the terms used therein are not intended to limit the technical features described herein to specific embodiments, but include various modifications, equivalents, or alternatives of the embodiments. In describing the drawings, similar or related components may use similar reference numerals. The singular form of a noun corresponding to an item may include one or more of the item, unless the relevant context clearly dictates otherwise. In this specification, each of phrases such as "A or B," "at least one of A and B," "at least one of A or B," "A, B, or C," "at least one of A, B, and C," and "at least one of A, B, or C" may include any of the items listed together in the corresponding phrase, or all possible combinations thereof. Terms such as "first," "second," "first," or "second" may be used simply to distinguish a component from other corresponding components and do not limit the component in other aspects (e.g., importance or order). When a (e.g., first) component is referred to as being "coupled" or "connected" to another (e.g., second) component, either in combination with or without the terms "functionally" or "communicatively," it means that the component may be connected to the other component directly (e.g., by wire), wirelessly, or through a third component.

[0071] According to various embodiments, each of the components may include one or more individuals, and some of the individuals may be separated into different components. According to various embodiments, one or more of the aforementioned components may be omitted, or one or more other components may be added. Alternatively or additionally, multiple components may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the multiple components in the same or similar manner as performed by the corresponding component of the multiple components before integration. According to various embodiments, the steps for producing a film may be performed sequentially, in parallel, or iteratively, or one or more of the steps may be performed in a different order, omitted, or one or more additional steps may be added.

Claims

1. In vehicle films, liquid crystal layer; a first conductive polymer layer laminated on the first surface of the liquid crystal layer; a second conductive polymer layer laminated on a second surface of the liquid crystal layer opposite to the first surface; a first substrate layer on the first conductive polymer layer; a second substrate layer on the second conductive polymer layer; a first electrode layer between the first conductive polymer layer and the first substrate layer; and a second electrode layer between the second conductive polymer layer and the second substrate layer; A film that has a curvature due to being at least partially bent.

2. a first coating layer interposed between the first conductive polymer layer and the first electrode layer; and further comprising a second coating layer interposed between the second conductive polymer layer and the second electrode layer; 10. The film of claim 1, wherein the first coating layer and the second coating layer each comprise urethane.

3. the first conductive polymer layer and the second conductive polymer layer each comprise plastic; The film of claim 1 , wherein the first electrode layer and the second electrode layer each comprise a metal.

4. 10. The film of claim 1, having a heat deflection temperature in the range of 350 degrees Celsius to 500 degrees Celsius.

5. 0.5 m ２ ~2m ２ 10. The film of claim 1 having a size of

6. In a method for manufacturing a film for a vehicle, Preparing a film dough; Heating the prepared film fabric; Vacuum forming the heated film fabric; and The method includes cutting the vacuum-formed film fabric.

7. The step of heating the prepared film dough includes: Heating the prepared film fabric to a temperature within a first reference range; and 7. The method of claim 6, further comprising the step of, after heating to the temperature within the first reference range, heating the film fabric to a temperature within a second reference range that is higher than the temperature within the first reference range before vacuum forming the film fabric.

8. The step of vacuum-forming the heated film fabric comprises: placing the heated film fabric between a mold having a curved surface and a press facing the mold; sealing the space between the mold and the press by pressing the film fabric with the press; The method of claim 6, including removing air from within the sealed space so that the film fabric is pressed against the curved surface.

9. The step of cutting the vacuum-formed film fabric includes: After vacuum forming, the film fabric including the portion having curvature is cut into 0.5 m ２ ~2m ２ 7. The method of claim 6, including the step of cutting to a size within the range of

10. The film fabric is Liquid crystal layer; at least one conductive polymer layer laminated onto the liquid crystal layer; and at least one electrode layer disposed on the at least one conductive polymer layer; The method of claim 6 , further comprising the step of connecting electrical wires to the at least one conductive polymer layer and the at least one electrode layer.

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