Film, display panel, display device, and household electrical appliance

Abstract

Embodiments of the present disclosure provide a film (10), a display panel (100), a display device (1000), and a household appliance. The film (10) is used for in-mold decoration. The film (10) includes a base material layer (11) and at least two functional layers. The base material layer (11) has an outer surface and an inner surface. A part of each of the functional layers is printed on the outer surface of the base material layer (11), and the remaining part of each of the functional layers is printed on the inner surface of the base material layer (11). The base material layer (11) adopts a manufacturing process of double-sided printing. When the total number of functional layers is the same, double-sided printing can reduce the number of functional layers on one side, reduce the defective rate caused by excessive printing layers on one side, and improve the yield rate of the product.

Description

Technical Field

[0001] (Cross - reference to related applications) This application claims priority to a Chinese patent application with application number 202221560142.X, filed with the Chinese Patent Office on June 20, 2022, and a Chinese patent application with application number 202210699650.4, filed with the Chinese Patent Office on June 20, 2022, and all the contents of the Chinese patent applications are incorporated herein by reference.

[0002] This disclosure relates to the technical field of in - mold decoration, and particularly to films, display panels, display devices, and household appliances.

Background Art

[0003] Taking the display panel of a household appliance as an example, in the in - mold decoration (IMD) process adopted in the related art, each printing layer is placed layer by layer outside the base material layer of the film. After placing the printed film on the side wall of the mold cavity of the mold, injection molding is carried out. The defective rate of the film is high, and as a result, the out - of - specification rate of the formed display panel is high.

Summary of the Invention

Problems to be Solved by the Invention

[0004] In view of the above, an embodiment of this disclosure aims to provide a film, a display panel, a display device, and a household appliance that can improve the yield rate of products.

Means for Solving the Problems

[0005] Embodiments of this disclosure provide a film used for in - mold decoration, and the film includes a base material layer having an outer surface and an inner surface, and at least two functional layers, wherein a part of each of the functional layers is printed on the outer surface of the base material layer, and the remaining part of each of the functional layers is printed on the inner surface of the base material layer.

[0006] In some embodiments, each of the functional layers includes a pattern layer and a circuit layer, and the circuit layer is located inside the pattern layer.

[0007] In some embodiments, the circuit layer, the base material layer, and the pattern layer are sequentially arranged along the direction from the inside to the outside.

[0008] In some embodiments, each of the functional layers includes a light homogenization layer for homogenizing light, and both the pattern layer and the circuit layer are located outside the light homogenization layer.

[0009] In some embodiments, the light homogenization layer, the base material layer, the circuit layer, and the pattern layer are sequentially arranged along the direction from the inside to the outside.

[0010] In some embodiments, the light homogenization layer, the circuit layer, the base material layer, and the pattern layer are sequentially arranged along the direction from the inside to the outside.

[0011] In some embodiments, the light homogenization layer is an ink diffusion layer.

[0012] In some embodiments, the film includes a separation sheet and a base material connection strip provided on a side edge of the base material layer. A connection circuit electrically connected to a circuit in the circuit printing layer is provided on the base material connection strip, and the separation sheet covers at least a connection circuit printed at one end close to the base material layer of the base material connection strip.

[0013] The embodiments of the present disclosure provide a display panel, and the display panel includes an inner film which is the film described in any embodiment of the present disclosure, and an injection molding layer injection molded on an outer surface of the inner film.

[0014] In some embodiments, the display panel includes an outer film, and the injection molding layer is injection molded between the outer film and the inner film.

[0015] Embodiments of the present disclosure provide a display device, and the display device includes a display panel box provided with a light emitting source, and a display panel according to any embodiment of the present disclosure, wherein the display panel box is provided inside the display panel, and the light emitting source is used to output light to the display panel.

[0016] In some embodiments, the display device includes a mounting frame having a mounting space, the display panel box is fitted into the mounting space, the display panel is connected to the mounting frame and covers the mounting space.

[0017] Embodiments of the present disclosure provide a household appliance, and the household appliance includes a housing and a display device according to any embodiment of the present disclosure, and the display device is provided in the housing.

[0018] In some embodiments, the household appliance is a clothing treatment device, the clothing treatment device includes a knob for selecting a washing and care program, the display panel is provided with a mounting hole therethrough, and the knob is rotatably provided in the mounting hole.

[0019] According to the film of the embodiment of the present disclosure, the base material layer adopts a production process of double-sided printing. When the total number of functional layers is the same, the number of functional layers on one side can be reduced by double-sided printing, the defective rate due to excessive printing layers on one side can be reduced, and the yield rate of the product can be improved.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0021] Hereinafter, with reference to the drawings and embodiments, the embodiments of the present disclosure will be described in more detail. The following embodiments are for explaining the present disclosure and are not for limiting the scope of the present disclosure.

[0022] In the description of the embodiments of the present disclosure, the orientation or positional relationship indicated by the terms "inside" and "outside" is based on the orientation or positional relationship shown in the drawings, and is only for facilitating the description of the embodiments of the present disclosure and simplifying the description, and does not indicate or imply that the specified device or element must have a specific orientation and must be configured and operate in a specific orientation. Therefore, it should not be understood as a limitation to the embodiments of the present disclosure. Also, terms such as "first", "second", "third", etc. are used only for the purpose of description and are not understood to indicate or imply their relative importance.

[0023] The embodiments of the present disclosure provide a film 10 used for a display panel.

[0024] For example, through the process of In-Mold Decoration (abbreviated as IMD), the injection molding material is injection molded on the outer surface of the film to form a display panel. Of course, understandably, the film 10 may be applied to the display panel by other processes.

[0025] Referring to FIGS. 1 to 3, the film includes a base material layer 11 and at least two functional layers.

[0026] The base material layer 11 has an outer surface and an inner surface. That is, the outer surface and the inner surface are located on opposite sides of the base material layer 11.

[0027] The base material layer 11 is a sheet used as a carrier for printing and has a certain structural strength.

[0028] As the raw material of the base material layer 11, resins such as PET (Polyethylene terephthalate), PMMA (Polymethyl methacrylate), PC (Polycarbonate), PVC (Polyvinyl chloride), PP (Polypropylene), and acrylic resin may be used.

[0029] A part of each of the functional layers is printed on the outer surface of the base material layer, and the remaining part of each of the functional layers is printed on the inner surface of the base material layer. That is, the base material layer 11 adopts double-sided printing.

[0030] Note that the form of printing is not limited. For example, it includes spraying, laser printing, painting, etc., but is not limited thereto. In short, each functional layer printed on the base material layer 11 itself has no film-like carrier, and each functional layer uses the base material layer 11 as a carrier, and each functional layer is obtained by printing layer by layer on the base material layer 11.

[0031] Note that the functional layer refers to a printing layer related to the function presented by the film to the outside. For example, the following pattern layer 13, circuit layer 12, light homogenization layer 14, gloss oil layer, etc.

[0032] In the related art, each functional layer is arranged outside the base material layer 11 and is arranged layer by layer. Therefore, the errors generated in each functional layer are likely to accumulate and amplify, resulting in a high defective rate of the film product.

[0033] In the film of the embodiment of the present disclosure, the base material layer adopts a manufacturing process of double-sided printing. When the total number of functional layers is the same, the number of functional layers on one side can be reduced by double-sided printing, reducing the defective rate caused by excessive printing layers on one side, and improving the yield rate of the product.

[0034] The embodiment of the present disclosure further provides a display panel 100. Referring to FIGS. 4 and 8, the display panel 100 includes an inner film and an injection molding layer 20. Here, the inner film is the film 10 of any embodiment of the present disclosure.

[0035] The injection molding layer 20 is injection molded on the outer surface of the inner film, that is, the inner film is located inside the injection molding layer 20.

[0036] Taking the injection molding layer 20 as a reference, the outer side refers to the side facing the user, and the inner side refers to the side away from the user.

[0037] In the related art, since many cumulative errors are likely to occur in the functional layer of the film, the display effect of the display panel fails to meet the requirements, and the yield rate of the display panel is low.

[0038] In the display panel of the embodiment of the present disclosure, since the functional layer of the film is provided separately on both opposite sides of the base material layer 11, the cumulative error is greatly reduced, which helps to improve the yield rate of the display panel.

[0039] Exemplarily, referring to FIGS. 1 to 3, each functional layer includes at least a pattern layer 13 and a circuit layer 12. That is, both the pattern layer 13 and the circuit layer 12 are printed on the base material layer 11.

[0040] The specific type of the pattern in the pattern layer is not particularly limited. For example, it includes any one of any type of language characters (Chinese characters, English letters, French letters, etc.), numbers, color combinations, patterns, patterns displayed in different regions of grayscale values, or any combination thereof, but is not limited thereto.

[0041] The pattern in the pattern layer 13 may be in color or in black and white, and is not limited herein.

[0042] Since the circuit layer 12 has a printed circuit, the circuit layer 12 as a whole exhibits the form of a flexible circuit.

[0043] In the film of the embodiment of the present disclosure, the circuit layer 12 and the pattern layer 13 are integrally printed and integrated on the base material layer. In this way, the gap between the circuit layer 12 and the pattern layer 13 is eliminated, and the requirement for the sharpness of the pattern display after brightening can be satisfied. Furthermore, since air and vapor do not penetrate between the circuit layer 12 and the pattern layer 13, the possibility of the film receiving moisture can be reduced, and the touch sensitivity can be ensured.

[0044] In the film 10 of the embodiment of the present disclosure, the pattern layer 13 may be printed first and then the circuit layer 12 may be printed, or the circuit layer 12 may be printed first and then the pattern layer 13 may be printed. In any case, when printing the circuit layer 12 or the pattern layer 13 later, the position of the electronic device in the circuit layer 12 and the corresponding pattern in the pattern layer 13 can be preferably matched to improve the accuracy of the matching position.

[0045] Exemplarily, referring to FIGS. 4, 5, and 8, the film 10 includes a base material connection band 15 provided on the side of the base material layer 11 and a connection circuit printed on the base material connection band 15, and the connection circuit is used to electrically connect the circuit in the printed circuit layer and the external circuit.

[0046] It should be noted that the base material connection band 15 and the base material layer 11 are both cut into a desired shape in the cutting process. That is, the base material connection band 15 and the base material layer 11 have an integral structure.

[0047] In the process of printing each functional layer on the base material layer 11, only the connection circuit needs to be printed on the base material connection band 15. There is no need to print a pattern layer or other layers on the base material connection band 15.

[0048] The circuits in the circuit layer 12 are used to respond to the touch of the display panel 100. In this embodiment, the display panel 100 is a touch panel.

[0049] The display panel 100 is formed by adopting an injection molding process in a mold. Before injection, first, the film 10 is placed in the cavity of the mold and fixed. For example, by vacuum adsorption fixing, the outer surface of the inner film faces the inside of the cavity. Next, a liquid resin material is injected into the mold. After cooling, the mold is opened. The resin material forms the injection molding layer 20 after cooling, and the film 10 is joined to the inner surface of the injection molding layer 20. In the molding process, the base material layer 11 of the film 10 does not peel off, and the film 10 is joined to the inner surface of the injection molding layer 20 as a whole.

[0050] In the display panel 100 of the embodiment of the present disclosure, since the film 10 is integrally joined to the inner surface of the injection molding layer 20 as a whole, that is, since both the pattern layer 13 and the circuit layer 12 are firmly attached to the inner surface of the injection molding layer 20, there is no need to manually attach the film layer by layer, which can improve efficiency and reduce manufacturing costs. Further, since there is no gap between the pattern layer 13 and the circuit layer 12, the moisture-proof and waterproof performance is suitable, and the touch sensitivity and reliability are improved. Further, by being able to preferably match the position of the electronic device in the circuit layer 12 with the corresponding pattern in the pattern layer 13, the appearance consistency of the display panel is improved.

[0051] Exemplarily, referring to FIGS. 4 and 8, the display panel 100 further includes an outer film 30, and the injection molding layer 20 is injection molded between the outer film 30 and the inner film.

[0052] Here, the specific configuration of the outer film 30 is not limited, and any one of the films in the prior art can be used.

[0053] In the in-mold injection molding process, a liquid resin material is injected onto the inner surface of the outer film 30 and the outer surface of the inner film. When in-mold injection molding is performed, the inner film, the injection molding layer 20, and the outer film 30 are integrated. The inner film is joined to the inner surface of the injection molding layer 20, and the outer film 30 is joined to the outer surface of the injection molding layer 20.

[0054] Both the outer film 30 and the injection molding layer 20 are made of a light-transmissive material so that the pattern on the pattern layer 13 can be seen from the outside when the display panel 100 brightens.

[0055] The outer film 30 provides a good protective effect and reduces the probability of the surface of the display panel 100 being damaged.

[0056] In the display panel 100 of the embodiment of the present disclosure, since the circuit layer 12 and the pattern layer 13 are provided on the inner film, when the display panel 100 is not bright, the pattern layer 13 and the circuit layer 12 are hardly visible in the view outside the display panel 100 due to the outer film 30 and the injection molding layer 20. That is, when it is not bright, the user can hardly see the pattern layer 13 and the circuit layer 12 from the outside, and the user can see the pattern on the pattern layer 13 only when the display panel 100 brightens.

[0057] After the inner film is formed, a protective film layer that can be easily peeled off can be covered on both the inner and outer sides of the inner film to protect the inner film.

[0058] After the outer film 30 is formed, a protective film layer that can be easily peeled off can be covered on both the inner and outer sides of the outer film 30 to protect the outer film 30.

[0059] Exemplarily, the above display panel 100 can be formed by adopting the following steps.

[0060] First, after printing and forming each of the inner film and the outer film 30, remove the protective films on both surfaces of the inner film and the protective films on both surfaces of the outer film 30. Dust removal is performed on the surfaces of the inner film and the outer film 30, for example, by a combination of manual dust removal and electrostatic dust removal.

[0061] Next, place the dust-removed inner film on one side of the mold cavity of the mold and fix it by vacuum adsorption. Place the dust-removed outer film 30 on the other side of the mold cavity of the mold and fix it by vacuum adsorption. For example, place the inner film in the mold cavity of the fixed mold, place the outer film 30 in the mold cavity of the movable mold, or place the inner film in the mold cavity of the movable mold and place the outer film 30 in the mold cavity of the fixed mold.

[0062] After that, close the mold, inject a resin material into the mold, and simultaneously adhere the inner film and the outer film 30 to the injected resin material and mold them into a predetermined shape.

[0063] After the resin is cooled, open the mold to obtain an injection molded product.

[0064] In some embodiments, the injection molded product may be the final finished product, that is, there is no need to additionally employ other processes.

[0065] In some other embodiments, the injection molded product is a semi-finished product, and further processing such as irradiating the injection molded product with ultraviolet light is required.

[0066] Exemplarily, referring to FIGS. 1 and 2, the film includes a light homogenization layer 14 for homogenizing light, and both the circuit layer 12 and the pattern layer 13 are provided outside the light homogenization layer 14. When the display panel 100 brightens, light passes through the display panel 100 in a direction from the inside to the outside of the display panel 100. First, the light passes through the light homogenization layer 14, and then passes through the circuit layer 12 and the pattern layer 13. Here, the order of the circuit layer 12 and the pattern layer 13 is not limited. For example, the light may first pass through the circuit layer 12 and then through the pattern layer 13, or first pass through the pattern layer 13 and then through the circuit layer 12. In the process of the light passing through the light homogenization layer 14, the light homogenization layer 14 provides a good light homogenization effect, so that the brightness presented by the display panel 100 is uniform and soft, and the user cannot easily see the light source behind the display panel.

[0067] It should be noted that the light homogenization layer plays a role in homogenizing light, and the printing material used for the light homogenization layer is not limited. For example, in some embodiments, the light homogenization layer is an ink diffusion layer, that is, the printing material of the light homogenization layer is ink, and the ink is diffusely printed by printing means. It should be noted that the ink diffusion layer can transmit light.

[0068] Exemplarily, referring to FIGS. 1 and 2, the light homogenization layer 14 is provided on the inner surface of the base material layer 11.

[0069] The ink of the light homogenization layer 14 has powdery particles, and the bonding force between the particles and the base material layer 11 or other adjacent layers is relatively weak. The base material layer 11 serves as a carrier of the inner film. If the bonding force between the base material layer 11 and the injection molding layer 20 is insufficient, the base material layer 11 is likely to peel off, resulting in defective products.

[0070] In this embodiment, since the light homogenization layer 14 is provided on the inner surface of the injection molding layer 20, after the inner film is joined to the injection molding layer 20, the weak bonding force of the light homogenization layer 14 does not affect the bonding force between the base material layer 11 and the injection molding layer 20, and the bonding force between the base material layer 11 and the injection molding layer 20 becomes suitable. In the stage of performing an environmental test after molding the display panel 100, etc., the base material layer 11 can ensure the reliability of the display panel 100 without being easily peeled off from the injection molding layer 20.

[0071] In this embodiment, since the light homogenization layer 14 is provided inside the base material layer 11, even if the bonding force between the light homogenization layer 14 and the base material layer 11 is still weak, the base material layer 11, as a structural carrier, is itself difficult to peel off from the injection molding layer 20. Since the light homogenization layer 14 itself is a thin coating layer and there is no sheet like the base material layer 11 on the light homogenization layer 14 itself, the light homogenization layer 14 itself will not float or peel off from the base material layer 11.

[0072] Exemplarily, referring to FIGS. 1, 2, and 3, the pattern layer 13 is provided on the outer surface of the circuit layer 12. In this embodiment, the pattern layer 13 plays a shielding role with respect to the circuit layer 12, and the user cannot easily see the circuit in the circuit layer 12.

[0073] Note that the pattern layer 13 can completely shield the circuit layer 12, or the pattern region in the pattern layer 13 can shield the electronic devices in the circuit layer 12.

[0074] In some embodiments, the pattern layer 13 is provided on the outer surface of the base material layer 11, and the circuit layer 12 is provided on the inner surface of the base material layer 11. That is, the pattern layer 13 and the circuit layer 12 are located on the opposite surface sides of the base material layer 11.

[0075] In some embodiments, referring to FIG. 2, the pattern layer 13 is provided on the outer surface of the base material layer 11, the circuit layer 12 is provided on the inner surface of the base material layer 11, and the circuit layer 12 is provided between the light homogenization layer 14 and the base material layer 11. In this embodiment, the light homogenization layer 14 does not affect the bonding force between the circuit layer 12 and the base material layer 11, and can also play a role in homogenizing light. In addition, the pattern layer 13 is on the outer surface of the base material layer 11, and the ink on the pattern layer 13 can adhere better by the injection molding layer 20, and a clearer appearance can be presented.

[0076] In some other embodiments, referring to FIG. 1, both the pattern layer 13 and the circuit layer 12 are provided on the outer surface of the base material layer 11, and the circuit layer 12 is provided between the pattern layer 13 and the base material layer 11.

[0077] In this embodiment, both the circuit layer 12 and the pattern layer 13 can adhere better by the injection molding layer 20. Furthermore, the base material layer 11 is inside the circuit layer 12 and can also play a good protective role for the circuit layer 12.

[0078] In some embodiments, the light homogenization layer 14 is provided on the outermost layer inside the film.

[0079] Here, in the embodiments of the present disclosure, the outermost layer refers to the outermost surface layer, and there is no other printing layer on the side away from the base material layer 11 of the outermost layer.

[0080] In this embodiment, the light homogenization layer 14 plays a role in homogenizing light. Since there are no scratches on the light homogenization layer 14 caused by the user or the external environment, there is no need to apply another layer on the surface of the light homogenization layer 14. In this way, the cost can be reduced on the premise of meeting the use performance.

[0081] Exemplarily, referring to FIGS. 4 and 8, the film includes an isolation sheet 16. The isolation sheet 16 is provided on the outer surface of the base material connection band 15 and covers at least the circuit printed at one end of the base material connection band 15 close to the base material layer 11.

[0082] The isolation sheet 16 serves to protect the circuit and prevent the resin material injected during injection molding from burning out.

[0083] Specifically, during injection molding, the inner film is placed inside the cavity of the mold. One end of the substrate connection strip 15 close to the substrate layer 11 is located inside the cavity, and the other end away from the substrate layer 11 is located outside the cavity. The part located inside the cavity is in contact with the injected resin. Therefore, the isolation sheet 16 needs to cover at least the part of the substrate connection strip 15 located inside the cavity, thereby isolating the circuit from the resin material and preventing the resin material from burning out the circuit during injection.

[0084] Note that the part of the substrate connection strip 15 located outside the cavity may or may not be covered by the isolation sheet 16.

[0085] Exemplarily, the main manufacturing steps of the inner film according to an embodiment will be briefly described below.

[0086] The manufacturing process of the inner film includes the following steps.

[0087] Material cutting step: Cut the roll-shaped film into a designed shape such as a square according to the substrate sheet. Note that the sheet corresponding to the substrate layer 11 and the substrate connection strip 15 are cut together.

[0088] Preliminary shrinkage step: Before printing, put the cut substrate sheet into an oven and heat it to reduce the probability of shrinkage.

[0089] Printing process step: Apply gloss oil, circuit layer 12, pattern layer 13, light homogenization layer 14, etc. to the cut substrate sheet, put the printed substrate sheet into a high-temperature oven to dry it, cure the ink, and evaporate the solvent in the ink.

[0090] Protective film pasting step: Paste protective films on both sides of the substrate sheet to prevent the surface of the printed substrate sheet from being damaged when punching positioning holes.

[0091] Positioning hole punching step: Punch positioning holes for punching and positioning holes for thermo-press forming on the base material sheet. The positioning holes for punching and the positioning holes for thermo-press forming should be punched accurately.

[0092] Thermo-press forming step: Use a thermo-press forming mold to thermo-press the base material sheet and form the base material sheet into the outer shape of the product.

[0093] Punching step: Cut the waste material of the thermo-press formed base material sheet to obtain the inner film.

[0094] Hereinafter, some embodiments of the inner film of the present disclosure will be described with reference to the drawings.

[0095] Regarding the first embodiment Referring to FIG. 1, the inner film includes a base material layer 11, a pattern layer 13, a circuit layer 12, and a light homogenization layer 14.

[0096] In the direction from the inside to the outside, the light homogenization layer 14, the base material layer 11, the circuit layer 12, and the pattern layer 13 are sequentially arranged.

[0097] In the manufacturing process of the inner film, before applying the circuit layer 12, a layer of gloss oil may be first applied to the base material layer 11. The gloss oil has an isolation effect and can isolate the printing media between two adjacent layers. After applying a layer of gloss oil, the circuit layer 12 is applied. After applying a layer of gloss oil to the circuit layer 12, the pattern layer 13 is applied. It is not necessary to apply gloss oil outside the pattern layer 13. Of course, another layer of gloss oil may also be applied.

[0098] It should be noted that the sequential arrangement of the above-mentioned light homogenization layer 14, base material layer 11, circuit layer 12, and pattern layer 13 refers to the arrangement order of such four printing layers. Other layers may be selectively added or not added between the light homogenization layer 14 and the base material layer 11, between the base material layer 11 and the circuit layer 12, and between the circuit layer 12 and the pattern layer 13.

[0099] Regarding the second embodiment Referring to FIG. 2, the inner film includes a base material layer 11, a pattern layer 13, a circuit layer 12, and a light homogenization layer 14.

[0100] In the direction from the inside to the outside, the light homogenization layer 14, the circuit layer 12, the base material layer 11, and the pattern layer 13 are sequentially arranged.

[0101] Understandably, the above-mentioned gloss oil may be applied between any two layers.

[0102] Note that the sequential arrangement of the above-mentioned light homogenization layer 14, circuit layer 12, base material layer 11, and pattern layer 13 refers to the arrangement order of such four printing layers. Other layers may or may not be selectively added between the light homogenization layer 14 and the circuit layer 12, between the circuit layer 12 and the base material layer 11, and between the base material layer 11 and the pattern layer 13.

[0103] Regarding the third embodiment Referring to FIG. 3, the main structure in the third embodiment is almost the same as the structure in the second embodiment. The main difference is that in this embodiment, the light homogenization layer 14 is not provided.

[0104] In the direction from the inside to the outside, the circuit layer 12, the base material layer 11, and the pattern layer 13 are sequentially arranged.

[0105] For example, between the light-emitting source and the display panel 100, members such as a film for homogenizing light, such as ground glass, may be added to realize the light homogenization effect.

[0106] Note that the sequential arrangement of the above-mentioned circuit layer 12, base material layer 11, and pattern layer 13 refers to the arrangement order of such three printing layers. Other layers may or may not be selectively added between the circuit layer 12 and the base material layer 11, and between the base material layer 11 and the pattern layer 13.

[0107] In each embodiment of the present disclosure, it may only have the circuit layer 12, the pattern layer 13, the base material layer 11, and the light homogenization layer 14, and in addition, it may not have other functional layers. Of course, other functional layers may be added as needed.

[0108] Embodiments of the present disclosure provide a display device 1000. Referring to FIGS. 6, 7, and 8, the display device 1000 includes a display board box 300 and a display panel 100 according to any embodiment of the present disclosure.

[0109] The display board box 300 integrates a PCB board and a light-emitting source.

[0110] The type of the light-emitting source is not limited. For example, it can be light beads, light strips, etc.

[0111] The circuit in the circuit layer 12 is electrically connected to the PCB board.

[0112] The PCB board is used to control the light-emitting source to output light to the display panel 100. When the light-emitting source emits light, the display panel 100 becomes bright. In this way, the display panel 100 can be made to exhibit a certain brightness so that the user can see the pattern layer 13.

[0113] When the light-emitting source is off, the user can hardly see the pattern layer 13.

[0114] Exemplarily, the display device 1000 further includes a mounting frame 200, and both the display board box 300 and the display panel 100 are mounted on the mounting frame 200.

[0115] The mounting frame 200 provides mounting support for the display board box 300 and the display panel 100.

[0116] Exemplarily, the mounting frame 200 is basically a frame-type structure. The mounting frame 200 has a mounting space 200a, and the display panel box 300 is fitted into the mounting space 200a. During assembly, the display panel box 300 is fitted into the mounting space 200a from the back side of the mounting frame 200 and is fixed to the mounting frame 200 by, for example, screws, snaps, etc.

[0117] The display panel 100 is connected to the mounting frame 200 and covers the mounting space 200a. The display panel 100 is attached to the mounting space 200a from the front side of the mounting frame 200.

[0118] The application field of the display panel 100 of the embodiments of the present disclosure is not limited and can be used in any suitable product. For example, industries such as household appliances, communication terminals, automobiles, and medical care can be mentioned.

[0119] The embodiments of the present disclosure provide a household appliance, which includes a housing and a display device 1000 according to any embodiment of the present disclosure, and the display device 1000 is provided in the housing.

[0120] The display panel 100 of the display device 1000 is used as a part of the outer appearance surface of the household appliance, and the user can realize human interaction by operating the display panel 100.

[0121] The types of household appliances are not limited. For example, they can be a refrigerator, an air conditioner, an electric rice cooker, a clothing treatment device, etc.

[0122] Here, the specific types of the clothing treatment device are not limited. For example, it may be any one of a washing machine, a clothes dryer, and a washer-dryer, or it may be a set device formed by stacking a washing machine and a clothes dryer vertically.

[0123] Exemplarily, take the case where the household appliance is a clothing treatment device as an example.

[0124] The clothing treatment apparatus is provided with a knob, and the user can select washing and care programs such as standard washing, quick washing, wool washing, drum automatic cleaning, etc. by rotating this knob.

[0125] Referring to FIGS. 4 and 8, the display panel 100 is provided with a mounting hole 10a penetrating therethrough, and the knob is rotatably bored in the mounting hole 10a.

[0126] In this embodiment, the user can select parameters corresponding to each washing and care program, such as temperature, water volume, etc., by touching the display panel 100.

[0127] In the description of this specification, the description of reference terms such as "one embodiment", "some embodiments", "exemplary", "specific embodiments", or "some examples" means that the specific features, configurations, materials, or characteristics described in this embodiment or example are included in at least one embodiment or example of the embodiments of the present disclosure. In the present disclosure, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, configurations, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. Also, without contradiction, those skilled in the art can combine different embodiments or examples described in the present disclosure and the features of different embodiments or examples.

[0128] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure can be variously modified and changed. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present disclosure are included in the protection scope of the present disclosure.

Claims

1. A film for use in a display panel, comprising: a base material layer having an outer surface and an inner surface; and at least two functional layers, wherein a part of each of the functional layers is printed on the outer surface of the base material layer, and the remaining part of each of the functional layers is printed on the inner surface of the base material layer. Film.

2. Each of the functional layers comprises a pattern layer and a circuit layer, and the circuit layer is located inside the pattern layer. The film according to claim 1.

3. The circuit layer, the base material layer, and the pattern layer are sequentially arranged along a direction from the inside to the outside. The film according to claim 2.

4. Each of the functional layers comprises a light homogenization layer for homogenizing light, and the pattern layer and the circuit layer are both located outside the light homogenization layer. The film according to claim 2.

5. The light homogenization layer, the base material layer, the circuit layer, and the pattern layer are sequentially arranged along a direction from the inside to the outside. The film according to claim 4.

6. The light homogenization layer, the circuit layer, the base material layer, and the pattern layer are sequentially arranged along a direction from the inside to the outside. The film according to claim 4.

7. The light homogenization layer is an ink diffusion layer. The film according to any one of claims 4 to 6.

8. The film comprises a separation sheet and a base material connection strip provided on a side edge of the base material layer. The base material connection strip is provided with a connection circuit electrically connected to a circuit in the circuit layer, and the separation sheet covers at least a connection circuit printed on one end of the base material connection strip close to the base material layer. The film according to claim 2.

9. A display panel, comprising: an inner film which is the film according to any one of claims 1 to 8; and an injection molding layer injection molded on an outer surface of the inner film. Display panel.

10. The display panel comprises an outer film, and the injection molding layer is injection molded between the outer film and the inner film. The display panel according to claim 9.

11. A display device, comprising: a display panel box provided with a light emitting source; and the display panel according to claim 9 or 10, wherein the display panel box is provided inside the display panel, and the light emitting source is used to output light to the display panel. Display device.

12. The display device includes a mounting frame, the mounting frame has a mounting space, the display panel box is fitted into the mounting space, and the display panel is connected to the mounting frame and covers the mounting space. The display device according to claim 11. **Claim 13** An electrical appliance product, including a housing, and the display device according to claim 11 or 12, and the display device is provided in the housing. The display device is provided in the housing. Electrical appliance product. **Claim 14** The electrical appliance product is a clothing treatment device, the clothing treatment device includes a knob for selecting a washing and care program, the display panel is provided with a mounting hole penetrating therethrough, and the knob is rotatably provided in the mounting hole. The electrical appliance product according to claim 13.

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