A hidden human-computer interface display panel with decorative texture, a decorative film and a manufacturing method thereof

Abstract

The application discloses a hidden human-computer interface display panel with decorative texture, a decorative film and a manufacturing method thereof. The display panel is good in adaptability to peripheral components, has decoration and light transmission, and is good in visual effect. The display panel comprises a decorative film (2) and a light transmission support (1) or a light transmission bottom plate (6). The decorative film (2) is integrally formed with the light transmission support (1) in a decorative in-mold injection molding mode or is adhered to the light transmission bottom plate (6). The decorative film (2) comprises a transparent film layer (21), a texture image printing layer (22), a white light shielding beacon and a window printing layer (24). The display panel displays a texture image when no backlight is provided, and displays a beacon and a window pattern when the display panel is provided with backlight. The manufacturing method of the display panel comprises the steps of decorative film pre-preparation, shaped film cutting and pre-molding, and in-mold decorative injection molding. The application can be applied to the field of display panels.

Description

TECHNICAL FIELD

[0001] The present application relates to a hidden human-computer interface display panel with decorative texture; in addition, the present application also relates to a decorative film for the hidden human-computer interface display panel with decorative texture; in addition, the present application also relates to a manufacturing method of the hidden human-computer interface display panel with decorative texture and a manufacturing method of the decorative film. BACKGROUND

[0002] With the development of society and the progress of technology, the requirements for product modeling and surface decoration are getting higher and higher. IMD (English In-Mold Decoration) is a popular plastic surface decoration technology at present. After the printed film is formed, it is embedded in the injection mold cavity and then the mold is closed for injection molding. The shape and size can be kept stable, and it is more convenient for assembly. Therefore, IMD technology is often applied to the surface decoration of automobile interior parts, communication, electronics, electrical appliances and plastic daily products, which combines decoration and functionality in one, and has the advantages of hidden graphics, signs, not easy to wear and fade, and can keep bright color for a long time.

[0003] However, the existing in-mold decoration technology is relatively independent and single, and lacks integration and unity with other components. Taking automobile interior parts as an example, the interior parts and control systems of small cars are basically independent system components at present. For example, vehicle-mounted driving recorders, air conditioners, information entertainment systems, door and window control systems, etc. are independent control components with independent control panels. Multiple control panels and components make the overall structure complex, limit design creativity, occupy a large space, and have poor visual effect and poor decoration. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a hidden human-computer interface display panel with decorative texture which can integrate multiple display and control components into one. The display panel has good adaptability with peripheral components, has decoration and light transmission, and when control and display are not needed, the control and display parts are hidden, only the set panel texture pattern is displayed, and the visual effect is good.

[0005] In addition, the present application also provides a decorative film for the hidden human-computer interface display panel with decorative texture.

[0006] In addition, the present application also provides a manufacturing method of the hidden human-computer interface display panel with decorative texture.

[0007] In addition, the present application also provides a manufacturing method of the decorative film for the hidden human-computer interface display panel with decorative texture.

[0008] The first technical solution of the decorative film of the hidden human-computer interface display panel with decorative texture is: the decorative film comprises, from front to back, a transparent film layer, a texture image printing layer, a light-transmitting white supporting printing layer, a white light-shielding beacon and a window printing layer, the texture image printing layer is used to form a texture image with light transmission on the back of the transparent film layer by printing, so as to display the texture image when the back of the display panel is not illuminated by backlight, the light-transmitting white supporting printing layer is used to print white light-transmitting ink on the back of the texture image printing layer, so as to highlight the texture image of the texture image printing layer, so that the texture image is displayed clearly and brightly and has high image restoration, and the white light-shielding beacon and window printing layer are used to form a beacon and window pattern on the back of the light-transmitting white supporting printing layer by printing, so as to display the beacon and window pattern when the back of the display panel is illuminated by backlight.

[0009] The transparent film layer is made of PET or PMMA or PC or ABS or PC+PMMA material.

[0010] The light-transmitting metal film layer is used to enhance the metallic texture of the texture image printing layer, and the transparent light oil printing layer is used to prevent the light-transmitting metal film layer from being oxidized.

[0011] The light-transmitting metal film layer is a metal film generated by a vacuum sputtering film process.

[0012] Alternatively, the light-transmitting metal film layer is a metal film generated by a metal silver paste printing process.

[0013] The white light-shielding beacon and window printing layer and the adhesive layer are further provided with a black shielding printing layer, the printing pattern of the black shielding printing layer is the same as that of the white light-shielding beacon and window printing layer, and the black ink is used for overprinting to enhance the shielding of the backlight illumination at the non-display pattern.

[0014] The texture image printed on the texture image printing layer is a wood grain texture or a geometric texture or a metal texture or a gradient color texture, and is a monochrome image or a color image.

[0015] The outermost layer of the front of the decorative film is further covered with a transparent hard protective coating.

[0016] The second technical solution of the decorative film of the hidden human-computer interface display panel with decorative texture is: the decorative film comprises, from front to back, a protective film layer, a texture image printing layer, a white light-transmitting film layer, a white light-blocking beacon and a window printing layer, the texture image printing layer is used for forming a texture image with light transmission on the front surface of the white light-transmitting film layer by printing, so as to display the texture image when the back surface of the display panel is not illuminated by backlight, the protective film layer is used for protecting the texture image printing layer, the white light-transmitting film layer is used for fixing and highlighting the texture image of the texture image printing layer, so that the texture image is displayed clearly and brightly and has high image restoration, and the white light-blocking beacon and the window printing layer are used for forming a beacon and window pattern by printing, so as to display the beacon and window pattern when the back surface of the display panel is illuminated by backlight.

[0017] The white light-transmitting film layer adopts a white light-transmitting film made of PET or PMMA or PC or ABS or PC+PMMA material.

[0018] The white light-transmitting film layer has a light transmission rate of 15% to 95% and a thickness of 0.05 to 0.6 mm.

[0019] A black shielding printing layer is further arranged between the white light-blocking beacon and window printing layer and the adhesive layer, the printing pattern of the black shielding printing layer is the same as that of the white light-blocking beacon and window printing layer, and the black shielding printing layer is used for overprinting black ink to enhance the shielding of backlight illumination at a non-display pattern.

[0020] The texture image printed on the texture image printing layer is a wood grain texture or a geometric texture or a metal texture or a gradient color texture, and is a monochrome image or a color image.

[0021] A transparent hardening protective coating layer is further arranged on the outermost layer of the front surface of the decorative film.

[0022] The first technical solution of the hidden human-computer interface display panel with decorative texture is: the hidden human-computer interface display panel with decorative texture comprises a light-transmitting support and a decorative film according to any one of the technical solutions described above, and an adhesive layer is further arranged on the outermost layer of the back surface of the decorative film, and the adhesive layer is used for fusing the decorative film and the light-transmitting support during in-mold decoration injection molding.

[0023] The light-transmitting support is formed by injection molding of ABS or PMMA or PC or PET resin material.

[0024] The second technical solution of the hidden human-computer interface display panel with decorative texture is: the hidden human-computer interface display panel with decorative texture comprises a light-transmitting bottom plate and a decorative film of any one of the technical solutions described above, and the decorative film is fixedly bonded to the front surface of the light-transmitting bottom plate.

[0025] The light-transmitting bottom plate is made of light-transmitting plastic or glass.

[0026] The first technical solution of the manufacturing method of the decorative film of the hidden human-computer interface display panel with decorative texture is: the decorative film comprises, from the front surface to the back surface, a transparent film layer, a texture image printing layer, a light-transmitting white supporting printing layer, a white light-shielding beacon and a window printing layer, the texture image printing layer is used to form a texture image with light-transmitting property on the back surface of the transparent film layer by printing, so as to display the texture image when the back surface of the display panel is not illuminated by backlight, the light-transmitting white supporting printing layer is used to print white light-transmitting ink on the back surface of the texture image printing layer, so as to highlight the texture image of the texture image printing layer, so that the texture image is displayed clearly and brightly and has high image restoration degree, and the white light-shielding beacon and the window printing layer are used to form a beacon and a window pattern on the back surface of the light-transmitting white supporting printing layer by printing, so as to display the beacon and the window pattern when the back surface of the display panel is illuminated by backlight; the manufacturing method of the decorative film of the hidden human-computer interface display panel with decorative texture comprises the following steps:

[0027] (A1) cutting a transparent film material into a pre-designed size as a transparent film layer;

[0028] (A2) printing a texture image with light-transmitting property on the back surface of the transparent film layer by printing to form a texture image printing layer;

[0029] (A3) printing white light-transmitting ink on the back surface of the texture image printing layer to form a light-transmitting white supporting printing layer;

[0030] (A4) printing a white light-shielding bottom while hollow printing a beacon, a window and other light-transmitting contents on the back surface of the light-transmitting white supporting printing layer to form a white light-shielding beacon and window printing layer.

[0031] After the step (A2) of forming the texture image printing layer, before the step (A3) of forming the light-transmitting white supporting layer, the method further comprises: generating a metal film by vacuum sputtering film forming process on the back surface of the texture image printing layer to form a light-transmitting metal film layer; and after forming the light-transmitting metal film layer, printing an IMD special transparent light oil to form a transparent light oil printing layer.

[0032] Or, after the step (A2) of forming the texture image printing layer, before the step (A3) of forming the light-transmitting white bottom layer, further comprising: using a silk screen printing process, using a metal silver paste printing process to generate a metal printing film on the back of the texture image printing layer, forming a light-transmitting metal film layer; and after forming the light-transmitting metal film layer, printing the IMD special transparent varnish to form a transparent varnish printing layer.

[0033] The metal ink is mixed and uniformly prepared by mixing the transparent varnish, the mirror silver ink and the color ink, and the weight ratio is: transparent varnish 100 parts, mirror silver ink 10-20 parts, and color ink 0-5 parts.

[0034] In the step (A2), a CMYK four-color silk screen printing screen is made by using a reverse printing silk screen printing process, and four-color overprint printing is performed on the back of the transparent film layer in the order of K-Y-M-C to print the light-transmitting texture image. After each printing is completed, surface drying treatment is performed.

[0035] Or, in the step (A2), the light-transmitting texture image is directly printed on the back of the transparent film layer by using a digital printing method.

[0036] In the step (A3), the white light-transmitting ink is prepared by mixing the varnish and the white ink, and the weight ratio between the two is: varnish 100 parts and white ink 5-45 parts.

[0037] In the step (A4), the white bottom solid area is printed by using a silk screen printing method, and the beacon and the window parts are printed by using a silk screen printing method. The solid area is used as a bottom sealing light shielding part, and the printed part forms a hollow beacon and a window light-transmitting content.

[0038] In the step (A4), further comprising: printing black ink on the back of the white light-shielding beacon and window printing layer to form a black shielding printing layer, using a silk screen printing method, so that the printed pattern formed by the hollow part of the black ink is the same as the pattern of the white light-shielding beacon and window printing layer, and the printed content of the hollow beacon and window is expanded by 0.15-0.6mm compared with the corresponding hollow part of the white light-shielding beacon and window printing layer.

[0039] After all the steps are completed, further comprising: printing an adhesive on the back of the decorative film sheet to form an adhesive layer; and finally performing drying treatment.

[0040] The second technical solution of the manufacturing method of the decorative film of the hidden human-computer interface display panel with decorative texture is: the decorative film comprises, from front to back, a protective film layer, a texture image printing layer, a white light-transmitting film layer, a white light-blocking beacon and a window printing layer, the texture image printing layer is used to form a texture image with light-transmitting property on the front surface of the white light-transmitting film layer by printing, so as to display the texture image when the back surface of the display panel is not illuminated by backlight, the protective film layer is used to protect the texture image printing layer, the white light-transmitting film layer is used to fix and highlight the texture image of the texture image printing layer, so that the texture image is displayed clearly and brightly and has high image restoration degree, and the white light-blocking beacon and the window printing layer are used to form a beacon and window pattern by printing, so as to display the beacon and window pattern when the back surface of the display panel is illuminated by backlight; the manufacturing method of the decorative film of the hidden human-computer interface display panel with decorative texture comprises the following steps:

[0041] (A1) cutting a white light-transmitting film material into a pre-designed size as a white light-transmitting film layer;

[0042] (A2) printing a light-transmitting texture image on a transfer film by printing, and then transferring the texture image to the front surface of the white light-transmitting film layer by hot transfer, to form a texture image printing layer;

[0043] (A3) attaching a transparent film on the white light-transmitting film layer on the front surface of the texture image printing layer to form a protective film layer;

[0044] (A4) printing a white light-blocking bottom on the back surface of the white light-transmitting film layer, and hollow printing a beacon, a window and other light-transmitting contents to form a white light-blocking beacon and window printing layer.

[0045] In step (A2), a rotary printing machine is used to print the light-transmitting texture image on the transfer film by using intaglio printing process.

[0046] In step (A4), a silk screen printing method is used to print the beacon and the window by solid printing of the white bottom, the solid printed part is used as a blocking bottom, and the hollow printed part is used to form the hollow beacon and window light-transmitting contents.

[0047] In step (A4), further comprising: overprinting black ink on the back surface of the white light-blocking beacon and window printing layer to form a black shielding printing layer, using a silk screen printing method, so that the printed pattern formed by the hollow part of the black ink is the same as the pattern of the white light-blocking beacon and window printing layer, and the printed contents of the hollow beacon and window are larger than the periphery of the corresponding hollow part on the white light-blocking beacon and window printing layer by 0.15-0.6 mm.

[0048] After all the above steps are completed, further comprising: printing an adhesive on the outermost layer of the back of the decorative film to form an adhesive layer; and finally performing a drying process.

[0049] The first technical solution of the manufacturing method of the hidden human-computer interface display panel with decorative texture is: the hidden human-computer interface display panel with decorative texture comprises a light-transmitting support and a decorative film according to any one of the technical solutions described above, and an adhesive layer is further arranged on the outermost layer of the back of the decorative film, and the adhesive layer is used to fuse the decorative film and the light-transmitting support during in-mold decoration injection molding; and the manufacturing method of the hidden human-computer interface display panel with decorative texture comprises the following steps:

[0050] (A) Preparing the decorative film: preparing the decorative film according to the manufacturing method of the decorative film according to any one of the technical solutions described above;

[0051] (B) Cutting and pre-forming the decorative film: using a die-cutting die to cut the prepared decorative film to a preset shape and size; and using a film forming machine and a forming die to heat-press and pre-form the cut decorative film into a preset three-dimensional shape;

[0052] (C) In-mold decoration injection molding of the display panel: using an in-mold decoration injection molding process to place the pre-formed decorative film in the mold cavity of an injection mold, injecting molten transparent resin into the bottom of the decorative film in the mold cavity through the injection port of the injection mold by the screw barrel of an injection molding machine, and performing a film decoration and injection integrated molding process in the mold cavity to manufacture the display panel.

[0053] After step (C) is completed, further comprising: coating a light oil containing a hardening agent on the outermost layer of the front of the decorative film to form a transparent hardening protective coating.

[0054] Step (B) comprises the following steps:

[0055] (B1) using a die-cutting die to cut the printed decorative film into single sheets to a preset shape and size;

[0056] (B2) placing the die-cut decorative film in the lower mold cavity of the forming die of the film forming machine using a film positioning device;

[0057] (B3) starting the mold opening action, the heater of the film forming machine extends between the upper and lower molds to heat the decorative film in the lower mold cavity, and after the decorative film is softened, the heater returns to the original position, the film forming machine starts the upper mold, and the lower mold is pressed to form the softened decorative film between the upper and lower mold cavities;

[0058] (B4) Start the temperature regulating system of the upper and lower molds to cool and shape the decorative film sheet;

[0059] (B5) After the decorative film sheet is shaped, start the mold opening system, separate the upper and lower molds, and the upper mold returns to the original position. The lower mold cavity pops out the decorative film sheet, and the pre-formed decorative film sheet is taken out.

[0060] Step (C) includes the following steps:

[0061] (C1) Connect and fix the pre-formed decorative film sheet to the film sheet positioning device of the front mold cavity of the injection mold, and the front surface of the decorative film sheet is tightly attached to the front mold cavity;

[0062] (C2) Start the injection molding of the injection molding machine. The molten resin in the screw barrel of the injection molding machine is shot out from the screw nozzle and injected into the mold cavity of the injection mold through the injection port of the injection mold;

[0063] (C3) The molten resin injected into the mold cavity under high temperature and high pressure is directly injected into the bottom of the decorative film sheet in the mold cavity through the glue inlet, and flows at high speed to all parts of the inner wall of the mold cavity. The decorative film sheet softens at high temperature, and tightly adheres to the inner mold wall along the resin flow direction under the flow pressure of the molten resin under high temperature and high pressure, and is integrated with the transparent resin, and is formed in the mold cavity;

[0064] (C4) After the injection molding machine automatically identifies that the mold cavity is full, start the pressure maintaining and cooling system. After the pressure maintaining and cooling shaping is completed, the injection mold is opened, the movable mold returns to the original position, and the product in the fixed mold cavity is taken out.

[0065] The second technical scheme of the manufacturing method of the hidden human-computer interface display panel with decorative texture is: the hidden human-computer interface display panel with decorative texture includes a light-transmitting bottom plate and a decorative film sheet according to any one of the technical schemes described above, and the decorative film sheet is bonded and fixed to the front surface of the light-transmitting bottom plate. The manufacturing method of the hidden human-computer interface display panel with decorative texture includes the following steps:

[0066] (A) Preparing the decorative film sheet: preparing the decorative film sheet according to the manufacturing method of the decorative film sheet according to any one of the technical schemes described above;

[0067] (B) Fixing and forming the display panel: bonding and fixing the pre-formed decorative film sheet to the front surface of the light-transmitting bottom plate.

[0068] The hidden human-computer interface display panel with decorative texture and the decorative film sheet of the present application overcome the defects and deficiencies of the prior art, can effectively integrate the vehicle-mounted driving instrument, air conditioner, information entertainment, door and window switch, atmosphere lamp and other systems into an integrated display panel, serve as a central control display panel, form a texture image with light transmission by setting the texture image printing layer, display the texture image when the back of the display panel is not illuminated by backlight, and the overall appearance is similar to that of an ordinary decorative part, but the combination control and display components are hidden, so that the overall appearance is simple and beautiful, and the integration is good; the beacon and window printing layer are set to form a beacon and window pattern, so that the beacon and window pattern is displayed when the back of the display panel is illuminated by backlight, that is, when the control keys or screen provided on the back of the present application are touched by hand, the backlight and other system components are started, and various functions are presented instantly, which creatively integrates various system components of a car or other equipment into an integrated central control display panel, saves space occupation, designs and manufactures a simple, high-end and atmospheric decorative effect, hides the control and display functions therein, has the effects of texture image decoration on the surface and hidden beacon and window on the lower layer, brings great creative space and unlimited development prospects to the automobile industry, can be extended to other fields of application such as household appliances, electronic communication and intelligent door lock, has wide innovative development prospects, and will bring great economic and social benefits to the society; therefore, the hidden human-computer interface display panel with decorative texture and the decorative film sheet can integrate multiple display and control components into one, the display panel and the decorative film sheet have good adaptability with the surrounding components, have decorative and light transmission properties, the control and display parts are hidden when control and display are not needed, only the set panel texture pattern is displayed, and the visual effect is good.

[0069] Similarly, the manufacturing method of the hidden human-computer interface display panel with decorative texture and the decorative film sheet also has the beneficial effects described above.

[0070] In addition, the first technical solution of the manufacturing method of the hidden human-computer interface display panel with decorative texture organically integrates in-mold decoration technology, various printing technologies and three-dimensional component film sheet hot pressing forming technology, and manufactures the hidden human-computer interface display panel with decorative texture described above, so that it has better beneficial effects. BRIEF DESCRIPTION OF DRAWINGS

[0071] Figure 1 is a cross-sectional structure schematic view of the hidden human-computer interface display panel with decorative texture of embodiments one to five of the present application;

[0072] Figure 2is the front display state schematic diagram of the hidden human-computer interface display panel with decorative texture of the embodiment one, two, four, five and six of the present application when the back is not backlit;

[0073] Figure 3 is the front display state schematic diagram of the hidden human-computer interface display panel with decorative texture of the embodiment one, two, four, five and six of the present application when the back is backlit;

[0074] Figure 4 is Figure 1 is the enlarged structure schematic diagram of the section layer of the decorative film of the embodiment one of the present application;

[0075] Figure 5 is the enlarged structure schematic diagram of the section layer of the decorative film of the embodiment one of the present application;

[0076] Figure 6 is the enlarged structure schematic diagram of the section layer of the decorative film of the embodiment two of the present application;

[0077] Figure 7 is the enlarged structure schematic diagram of the section layer of the decorative film of the embodiment three of the present application;

[0078] Figure 8 is the structure schematic diagram of the transparent film / white light-transmitting film after cutting of the embodiment of the present application;

[0079] Figure 9 is the schematic diagram of the texture image printing layer of the embodiment one, two, four, five and six of the present application;

[0080] Figure 10 is the schematic diagram of the white light-shielding beacon and window printing layer of the embodiment of the present application;

[0081] Figure 11 is the schematic diagram of the black shielding printing layer of the embodiment of the present application;

[0082] Figure 12 is the schematic diagram of the texture image printing layer of the embodiment three of the present application;

[0083] Figure 13 is the structure schematic diagram of the decorative film after cutting of the embodiment one, two, four, five and six of the present application;

[0084] Figure 14 is the schematic diagram of the decorative film of the embodiment one to five of the present application for hot-pressing forming;

[0085] Figure 15 is the schematic diagram of the decorative film of the embodiment one to five of the present application for in-mold decoration injection molding;

[0086] Figure 16This is an enlarged structural diagram of the cross-sectional layering of the decorative film according to Embodiment 4 of the present invention;

[0087] Figure 17 This is an enlarged structural diagram of the cross-sectional layering of the decorative film according to Embodiment 5 of the present invention;

[0088] Figure 18 This is a cross-sectional view of the hidden human-machine interface display panel with decorative texture according to Embodiment Six of the present invention. Detailed Implementation

[0089] Example 1:

[0090] like Figures 1-5 As shown, the hidden human-machine interface display panel with decorative texture in this embodiment is a central control display panel that integrates in-vehicle systems such as driving instrument, air conditioning, infotainment, door and window switches, and ambient lighting into one unit. Its overall dimensions are 1500mm long, 220mm wide, and 3mm thick, with a three-dimensional streamlined shape. It is compatible with capacitive human-machine interface touch control systems. Its structure includes a light-transmitting bracket 1 and a decorative film 2 with decorative texture. The decorative film 2 is integrally formed with the light-transmitting bracket 1 through in-mold inlay decorative injection molding. The decorative film 2, from front to back, includes a transparent film layer 21, a textured image printing layer 22, a light-transmitting white backing printing layer 23, a white light-blocking beacon, and a window printing layer 24. The textured image printing layer 22 is used to print on... The back of the transparent film layer 21 forms a translucent textured image to display the textured image when there is no backlight on the back of the display panel. The translucent white backing printing layer 23 is used to print white translucent ink on the back of the textured image printing layer 22 to highlight the textured image of the textured image printing layer 22, making it clear, bright and with high image fidelity. The white light-blocking beacon and window printing layer 24 is used to form beacon and window patterns on the back of the translucent white backing printing layer 23 by printing, so that the beacon and window patterns are displayed when there is backlight on the back of the display panel. The outermost layer on the back of the decorative film 2 is also provided with an adhesive layer 26, which is used to fuse the decorative film 2 and the light-transmitting bracket 1 during in-mold inlay decorative injection molding.

[0091] Specifically, in this embodiment, the transparent film layer 21 is a PET transparent film with a thickness of 0.188mm, but other materials such as PMMA, PC, ABS, or PC+PMMA, whether colored or colorless, can also be used; the light-transmitting bracket 1 is formed by injection molding of ABS transparent resin material, but other materials such as PMMA, PC, or PET can also be used; the texture image printed on the texture image printing layer 22 is a wood grain texture image.

[0092] As Figures 8-10 , Figures 13-15 shown, the manufacturing method of the hidden human-computer interface display panel with decorative texture and decorative film sheet of the present embodiment includes the following steps:

[0093] (A) Preparing the decorative film sheet: pre-forming the decorative film sheet 2, specifically including the following steps:

[0094] (A1) Cutting the transparent film sheet material to the pre-designed size as the transparent film sheet layer 21 (as shown in Figure 8 );

[0095] (A2) Printing a light-transmitting texture image on the back of the transparent film sheet layer 21 by printing (as shown in Figure 9 ), forming a texture image printing layer 22;

[0096] (A3) Printing a light-transmitting white ink on the back of the texture image printing layer 22, forming a light-transmitting white bottom printing layer 23;

[0097] (A4) Printing a white light-shielding bottom while hollowing out the light-transmitting content such as beacons and windows (as shown in Figure 10 ) on the back of the light-transmitting white bottom printing layer 23, forming a white light-shielding beacon and window printing layer 24;

[0098] After the above steps are completed, it further includes: printing an adhesive on the back of the outermost layer of the decorative film sheet 2, forming an adhesive layer 26; and finally performing a drying process;

[0099] (B) Cutting and pre-forming the decorative film sheet: using a die cutter, cutting the decorative film sheet 2 after printing and manufacturing to achieve a pre-set shape and size (as shown in Figure 13 ); and using a film sheet forming machine and a forming mold 4, hot-pressing and pre-forming the cut decorative film sheet 2 (as shown in Figure 14 ) to make it into a pre-set three-dimensional shape;

[0100] (C) In-mold decorative injection molding of the display panel: using an in-mold decorative injection molding process, placing the pre-formed decorative film sheet 2 in the mold cavity of the injection mold 5 (as shown in Figure 15 ), and injecting the molten transparent resin into the bottom of the decorative film sheet 2 in the mold cavity through the injection port of the injection mold by the screw barrel of the injection molding machine, to perform a film decoration and injection integrated molding process in the mold cavity.

[0101] Preferably, in the step (A2) of making the textured image printing layer 22, according to the principle of four-color overprint printing of images, a reverse screen printing process is used to make a CMYK four-color screen printing screen, and the four-color overprint printing is performed on the back of the transparent film layer 21 in the reverse order of K-Y-M-C to print the light-transmitting textured image. After each printing is completed, surface drying treatment is performed to ensure that the next printing process can be successfully completed. The printing process uses reverse positive viewing, that is, printing is performed on the back (B side) of the transparent film layer 21. After the four-color overprint printing is completed, the image seen is a reverse image, but from the front (A side) of the transparent film layer 21, it is a positive image. Therefore, the screen printing plate made before printing is also reverse-made. If a traditional film screen plate is used, the film is on the bottom, which can ensure the precision of the screen plate. In addition, the order of four-color screen printing is also reversed. The conventional positive printing positive viewing printing order is C-M-Y-K, and the reverse positive viewing printing order in this embodiment is K-Y-M-C.

[0102] Preferably, according to the characteristics of the process, all the screen printing inks in this embodiment are IMD special inks, which can ensure that the subsequent process is successfully performed and the quality of product printing.

[0103] Preferably, in the step (A3) of making the light-transmitting white supporting printing layer, the white light-transmitting ink is prepared by mixing gloss oil and white ink, and the weight ratio between the two is: gloss oil 100 parts, white ink 5-45 parts. The light transmittance can be adjusted according to actual needs, and the proportion of white ink can be adjusted to adjust the light transmittance. The light transmittance is 15%-95%. Further preferably, 100 parts of gloss oil are mixed with 40 parts of white ink. This layer of white light-transmitting ink plays a key role. It not only clearly restores the color wood grain texture image as a contrasting color, but also hides the content of the next layer. The white light-transmitting layer can also display various signal color lights of LEDs. Therefore, the white light-transmitting ink layer can play a role of hiding and revealing. In different light environments, it can hide or show the next layer.

[0104] Preferably, in the step (A4) of making the white light-shielding beacon and window printing layer 24, a screen printing missing printing method is used to print the beacon and window parts with white solid missing printing. The solid part is used as a sealing bottom light shield, and the missing printing part forms a hollow beacon and window light-transmitting content.

[0105] The above-mentioned screen printing method has low plate-making cost, only 30% of the cost of gravure printing plate-making; low development and proofing cost, only 20% of the cost of gravure printing; high production capacity flexibility, which can produce in small batches or medium batches; and low cost and flexible conversion when printing multiple patterns.

[0106] In the step (B) of cutting and pre-forming the decorative film, the following steps are included:

[0107] (B1) Adopting die cutting knife mould, the printed decorative film piece 2 is cut into single sheet after making, make it reach the shape and size requirement of pre-set;

[0108] (B2) The film piece 2 is placed in the lower mould cavity of the film piece forming mould 4 by film piece positioning device, the lower mould cavity of the film piece forming mould 4 has film piece positioning device around, which is used to accurately fix the position of the film piece in the mould cavity, to ensure the uniformity of the pre-formed size and shape of the film piece; the lower mould cavity of the forming mould 4 is concave, and the upper mould cavity is convex; the lower mould frame of the forming mould 4 has four guide sleeves, and the corresponding position of the upper mould frame has four guide columns, which can ensure the accuracy of the forming size of the upper and lower moulds;

[0109] (B3) Start the opening mould action, the heater of the film piece forming machine is balanced and stretched between the upper and lower moulds, and the decorative film piece 2 in the lower mould cavity is heated; after the decorative film piece 2 is softened, the heater returns to the original position, the film piece forming machine starts the upper mould, and the upper mould is pressed down for a moment to form a clamping; the softened decorative film piece 2 is pressed and clamped between the upper and lower mould cavities; the lower mould cavity has spring support at the lower part of the mould core, when the upper and lower moulds are closed, the lower mould cavity moves downward under the pressure of the corresponding upper mould cavity, and the downward stroke is controlled by the stroke switch and the stroke limiting device; the heater can be adjusted in distance up and down, and the temperature can be adjusted; the decorative film piece 2 is placed in the positioner in the lower mould cavity, and after the decorative film piece 2 is softened, the heater quickly returns to the original position;

[0110] (B4) Start the temperature adjusting system of the upper and lower moulds to cool and shape the decorative film piece 2, to ensure the shape stability of the decorative film piece 2;

[0111] (B5) After the decorative film piece 2 is shaped, start the opening mould system, separate the upper and lower moulds, and the upper mould returns to the original position; the lower mould cavity pops out the decorative film piece 2, and the pre-formed decorative film piece 2 is taken out.

[0112] In the in-mould decoration injection moulding of the display panel in step (C), the following steps are specifically included:

[0113] (C1) Connect and fix the pre-formed decorative film piece 2 on the film piece positioning device of the front mould cavity of the injection mould 5, the front surface of the decorative film piece 2 is tightly attached to the front mould cavity, and the back surface faces outward, and the adhesive layer 26 is fused with the light-transmitting support 1;

[0114] (C2) Start the injection moulding machine to close the mould and inject, the resin in molten state in the screw barrel of the injection moulding machine is shot out from the screw nozzle, and is injected into the mould cavity of the injection mould 5 through the injection port of the injection mould; the mould is provided with a temperature control system; the transparent ABS raw material is used for injection, which can make the product have light transmission;

[0115] (C3) The molten resin injected into the mold cavity under high temperature and high pressure directly through the glue pouring gate into the bottom of the decorative film 2 in the mold cavity, and flows at high speed to all parts of the inner wall of the mold cavity. The decorative film 2 softens at high temperature, and tightly adheres to the inner mold wall along the resin flow direction under the high-temperature and high-pressure molten resin flow pressure, and is integrated with the transparent resin, and is formed in the mold cavity;

[0116] (C4) After the injection molding machine automatically identifies that the mold cavity is full of pouring, the pressure maintaining and cooling system is started. After the pressure maintaining and cooling shaping is completed, the injection mold 5 is opened, the movable mold is returned to the original position, and the product in the fixed mold cavity is taken out.

[0117] The manufacturing method of the hidden human-computer interface display panel with decorative texture of the embodiment organically integrates in-mold decoration technology, various printing technologies, and three-dimensional component film hot press molding technology, and manufactures the hidden human-computer interface display panel with decorative texture.

[0118] The hidden human-computer interface display panel with decorative texture of the embodiment can effectively integrate the vehicle-mounted driving instrument, air conditioner, information entertainment, door and window switch, atmosphere lamp and other systems into an integrated central control panel. The central control panel can be fully screened with a textured pattern decoration, or can display a partial LED window. The overall appearance feels like an interior trim part, but hides the combined control function therein. When a person's hand touches the corresponding part of the display panel, the other system components behind it are instantly awakened and started, and each function is instantly presented.

[0119] Embodiment Two:

[0120] As shown in Figure 6 The difference between the hidden human-computer interface display panel with decorative texture of the embodiment and the embodiment one is that a black shielding printing layer 25 is further arranged between the white light-shielding beacon and window printing layer 24 and the adhesive layer 26 in the embodiment. The printed pattern of the black shielding printing layer 25 is the same as that of the white light-shielding beacon and window printing layer 24, which is used for overprinting black ink to enhance the shielding of the backlight illumination at the non-display pattern position, so that the white and black two solid printing layers are overprinted to achieve the effect of completely shielding and not allowing light to pass through.

[0121] Correspondingly, the difference between the decorative textured hidden human-computer interface display panel and the manufacturing method of the decorative film of the present embodiment and the first embodiment is that after step (A4), before forming the adhesive layer 26, it further includes: printing black ink on the back of the white light-shielding beacon and window printing layer 24 to form a black shielding printing layer 25, using a screen printing omissions method, so that the printing pattern formed by the black ink in the hollow part is the same as the pattern of the white light-shielding beacon and window printing layer 24, and the printing content of the beacon and window hollow part is expanded by 0.15-0.6mm than the corresponding hollow part on the white light-shielding beacon and window printing layer 24, avoiding the overlay color offset and causing ghosting defects.

[0122] The remaining features of the present embodiment are the same as those of the first embodiment.

[0123] Embodiment three:

[0124] As shown in Figure 7 , Figure 12 The difference between the decorative textured hidden human-computer interface display panel and the decorative film of the present embodiment and the second embodiment is that: in the present embodiment, the texture image printed on the texture image printing layer 22 is a gradient color texture image; the texture image printing layer 22 and the light-transmitting white supporting layer 23 are further provided with a light-transmitting metal film layer 27 and a transparent light oil printing layer 28 in sequence, the light-transmitting metal film layer 27 is used to enhance the metal texture of the texture image printing layer 22, the transparent light oil printing layer 28 is used to prevent the light-transmitting metal film layer 27 from being oxidized, and additionally has the adhesion effect of the light-transmitting metal film layer 27 and the lower layer printing layer (i.e. the light-transmitting white supporting layer 23) for enhancing light transmission. The gradient texture image of the texture image printing layer 22 overlaps with the light-transmitting metal film layer 27 of the next layer, the light-transmitting metal film layer 27 has light transmission, and the light transmission rate is 15%-95%. Under the action of front light, the texture image printing layer 22 transmits metal light, so that the decorative transparent film becomes a metal texture with bright gradient color texture effect. Specifically, the light-transmitting metal film layer 27 is a metal plating film generated by vacuum sputtering plating process, specifically a metal aluminum plating film; or the light-transmitting metal film layer 27 is a metal printing film generated by metal silver paste printing process.

[0125] Correspondingly, the difference between the manufacturing method of the decorative textured hidden human-computer interface display panel and the decorative film of the present embodiment and the second embodiment is that: after forming the texture image printing layer 22 in step (A2), before forming the light-transmitting white supporting layer 23 in step (A3), it further includes: generating a metal plating film, specifically an aluminum film, on the back of the texture image printing layer 22 by vacuum sputtering plating process to form a light-transmitting metal film layer 27 with a light transmission rate of 15%-95%; and after forming the light-transmitting metal film layer 27, printing IMD special transparent light oil to form a transparent light oil printing layer 28.

[0126] Optionally, the step of forming the light-transmitting metal film layer 27 can also use a screen printing process, that is, after the step (A2) of forming the textured image printing layer 22, before the step (A3) of forming the light-transmitting white base layer 23, further comprising: using a screen printing process to generate a metal printing film on the back of the textured image printing layer 22 using metal silver paste printing process to form the light-transmitting metal film layer 27; and after forming the light-transmitting metal film layer 27, printing the IMD special transparent varnish to form the transparent varnish printing layer 28. Among them, the metal ink is mixed and uniformly matched with transparent varnish, mirror silver paste and color ink, and the weight ratio is: transparent varnish 100 parts, mirror silver paste 1-45 parts, color ink 0-5 parts, and color ink can also be added.

[0127] In addition, in step (A2), in the embodiment, a digital printing technology is used to directly print the light-transmitting textured image on the back of the transparent film layer 21. Using digital printing technology, digital printing is free of plate making, input design data, and ready-to-print printing, which can obtain a piece of exquisite image printing product, solving the problem of plate making cost; using high-resolution digital printer to print textured image, it can easily get high-definition and bright color image, solving the problem of high precision; because after printing, subsequent in-mold coating injection molding needs to withstand high temperature and high pressure of molten resin injection fusion processing, the ink of digital printing has no resistance in this respect, and the textured image is easy to be damaged during injection molding processing; but using IMD special ink and screen printing process can solve the above problems, and the subsequent printing layers are completed by screen printing, which plays a protective image role, so that digital printing combined with screen printing plays a complementary role. Using digital printing technology to form the textured image printing layer 22 can meet the personalized and diversified development trend and needs, and users have more choices in appearance design and style, which can realize the demand of private customization of textured image to meet the needs of personalized private customization of users.

[0128] The remaining features of the embodiment are the same as those of embodiment two.

[0129] Embodiment four:

[0130] As Figures 1-4 , Figure 16As shown, the decorative texture hidden human-computer interface display panel of the embodiment is a kind of central control display panel integrating vehicle-mounted driving instrument, air conditioner, information entertainment, door and window switch, atmosphere lamp and other systems, the overall size is 1500mm long, 220mm wide, 3mm thick, three-dimensional streamline modeling, can compatible capacitive human-computer interface touch control system, its structure includes light transmission support 1, decorative film 2 with decorative texture, the decorative film 2 is integrally formed with the light transmission support 1 by in-mold decoration injection molding mode;The decorative film 2 includes protective film layer 20, texture image printing layer 22, white light transmission film layer 210, white light shielding beacon and window printing layer 24 from front to back, the texture image printing layer 22 is used to form texture image with light transmission on the front surface of the white light transmission film layer 210 by printing, to display the texture image when the back of the display panel has no backlight illumination, the protective film layer 20 is used to protect the texture image printing layer 22, the white light transmission film layer 210 is used to fix and support the texture image of the texture image printing layer 22, so that it displays clearly and brightly and the image restoration degree is high, the white light shielding beacon and window printing layer 24 is used to form beacon and window pattern by printing, to display the beacon and window pattern when the back of the display panel has backlight illumination;The outermost layer of the back of the decorative film 2 is also provided with adhesive layer 26, the adhesive layer 26 is used to fuse the decorative film 2 and the light transmission support 1 when in-mold decoration injection molding.

[0131] Specifically, in the embodiment, the white light transmission film layer 210 adopts ABS light transmission film with milky white as base material, of course, PET or PMMA or PC or PC+PMMA and other materials of white light transmission film can also be used, the light transmission rate is 15%~95%, the thickness is 0.05~0.6mm;The light transmission support 1 is formed by injection molding of ABS light transmission resin material, of course, PMMA or PC or PET and other transparent resin materials can also be used for injection molding;The texture image printed on the texture image printing layer 22 is wood grain texture image;The protective film layer 20 adopts PMMA transparent film with thickness of 0.05mm.

[0132] As shown in Figures 8-10 、 Figures 13-15 The manufacturing method of the decorative texture hidden human-computer interface display panel and decorative film of the embodiment includes the following steps:

[0133] (A) Preparing decorative film: preparing decorative film 2, specifically including the following steps:

[0134] (A1) cutting and opening the white light transmission film material, cutting into the size designed in advance (such as Figure 8As shown), it serves as a white translucent film layer 210;

[0135] (A2) A translucent textured image is printed on a transfer film using a printing method, and then the textured image is transferred to the front side of the white translucent film layer 210 using a heat transfer method (e.g., ...). Figure 9 As shown), a textured image printing layer 22 is formed;

[0136] (A3) On the front side of the texture image printing layer 22, a transparent film is applied to the white light-transmitting film layer 210 to form a protective film layer 20.

[0137] (A4) While printing a white light-blocking base on the back of the white translucent film layer 210, light-transmitting content such as beacons and windows is cut out and printed (e.g., Figure 10 As shown), a white light-blocking beacon and window printing layer 24 are formed.

[0138] After the above steps are completed, the process also includes: printing adhesive on the outermost layer of the back of the decorative film 2 to form an adhesive layer 26; and finally performing a drying process.

[0139] (B) Cutting and pre-forming of decorative film: Using a die-cutting mold, the printed decorative film 2 is cut to achieve the preset shape and size (e.g., Figure 13 (as shown); then, using a film forming machine and forming mold 4, the cut decorative film 2 is pre-formed by hot pressing (as shown). Figure 14 As shown), to make it a preset three-dimensional shape;

[0140] (C) In-mold inlay decoration injection molding of the display panel: The pre-formed decorative film 2 is inlaid and placed inside the mold cavity of the injection mold 5 using an in-mold inlay decoration injection molding process (e.g., ...). Figure 15 As shown, molten transparent resin is injected into the bottom of the decorative film 2 inside the mold cavity through the screw barrel of the injection molding machine and the sprue of the injection mold, thus performing a molding process that integrates film coating decoration and injection within the mold cavity.

[0141] Preferably, in step (A2), a rotatory printing machine is used to print the light-transmissive color wood grain texture pattern on the transfer film by using the intaglio printing process; the thickness of the transfer film is 0.03-0.06 mm, preferably 0.05 mm PET polyester film; the white light-transmissive film layer 210 uses a milky white ABS light-transmissive film as the base material, the light transmittance is 15%-95%, and the thickness is 0.05-0.6 mm, preferably the light transmittance is 40% and the thickness is 0.25 mm. The texture image is hot-transferred to the base material, and the texture pattern is transferred from the polyester film to the front surface of the milky white ABS light-transmissive base material. The milky white printed base material highlights the texture image with high reduction degree and bright colors, and has good light transmittance. The white light-transmissive film hides the printing content of the next layer. The above-mentioned intaglio printing method has high image resolution, which can reach more than 175 lines per centimeter, and can print clear, delicate, fine and highly reduced image products. The production efficiency is high, and it is suitable for mass production.

[0142] Preferably, the protective film layer 20 is made of a 0.05 mm thick PMMA transparent film which is attached to the front surface of the texture image printing layer 22.

[0143] Preferably, in step (A4), the white light-transmissive film layer 210 and the white light-shielding beacon and window printing layer 24 are printed in white color, and the two are integrated, so that when the printed content is viewed from the front, different effects are produced under different light environments and conditions. When the front light is strong and the back light is weak, the wood grain texture image on the surface is visible, and the content of the beacon and window printed on the lower layer is hidden. On the contrary, when the front light is weak and the back light is strong, the content of the beacon and window printed on the lower layer is visible, producing a magic effect and a sense of mystery.

[0144] According to the characteristics of the process, the screen printing ink in this embodiment is all IMD special ink, which ensures the smooth progress of the subsequent process and the quality of the product printing.

[0145] In step (B), the cutting and pre-forming of the decorative film are specifically as follows:

[0146] (B1) The finished decorative film 2 is cut into single sheets by using a die cutter to meet the predetermined shape and size requirements;

[0147] (B2) The die-cut decorative film piece 2 is placed in the lower mold cavity of the film forming mold 4 of the film forming machine using the film positioning device; the film positioning device is arranged on the periphery of the lower mold cavity of the film forming mold 4, which is used to accurately fix the position of the film in the mold cavity to ensure the uniformity of the pre-formed size and shape of the film; the lower mold cavity of the forming mold 4 is concave, and the upper mold cavity is convex; the lower mold frame of the forming mold 4 has four guide sleeves, and the corresponding position of the upper mold frame has four guide columns, which can ensure the accuracy of the forming size of the upper and lower molds;

[0148] (B3) Start the mold opening action, the heating element of the film forming machine is balanced and stretched between the upper and lower molds, and the decorative film 2 in the lower mold cavity is heated; after the decorative film 2 softens, the heating element returns to the original position, the film forming machine starts the upper mold, and the mold is pressed down for a moment; the softened decorative film 2 is pressed and clamped between the upper and lower mold cavities; the lower mold cavity of the forming mold 4 has a spring support at the lower part of the mold core; when the upper and lower molds are closed, the lower mold cavity moves downward under the pressure of the corresponding upper mold cavity; the downward stroke is controlled by the stroke switch and the stroke limiting device; the heating element can be adjusted in distance up and down, and the temperature can be adjusted; the decorative film 2 is placed in the positioner in the lower mold cavity, and after the decorative film 2 softens, the heating element quickly returns to the original position;

[0149] (B4) Start the temperature regulation system of the upper and lower molds to cool and shape the decorative film 2 to ensure the shape stability of the decorative film 2;

[0150] (B5) After the decorative film 2 is shaped, start the mold opening system, separate the upper and lower molds, and the upper mold returns to the original position; the lower mold cavity pops out the decorative film 2, and the pre-formed decorative film 2 is taken out.

[0151] In the in-mold decoration injection molding of the display panel in step (C), the following steps are specifically included:

[0152] (C1) The pre-formed decorative film 2 is connected and fixed on the film positioning device of the front mold cavity of the injection mold 5, the front surface of the decorative film 2 is tightly attached to the front mold cavity, and the back surface faces outward, and the adhesive layer 26 is fused with the light-transmitting support 1;

[0153] (C2) Start the mold closing and injection of the injection molding machine; the resin in a molten state in the screw barrel of the injection molding machine is shot out from the screw nozzle and injected into the mold cavity of the injection mold 5 through the injection port; the mold is provided with a temperature control system; transparent ABS raw materials are used for injection molding, which can make the product have light transmission;

[0154] (C3) The molten resin injected into the mold cavity under high temperature and high pressure is directly injected into the bottom of the decorative film 2 in the mold cavity through the glue inlet, and flows at high speed to all parts of the inner wall of the mold cavity; the decorative film 2 softens at high temperature, and tightly adheres to the inner mold wall along the resin flow direction under the flow pressure of the molten resin under high temperature and high pressure, and is integrated with the transparent resin, and is formed in the mold cavity.

[0155] (C4) After the injection molding machine automatically identifies that the mold cavity is full of pouring, the pressure maintaining and cooling system is started; after the pressure maintaining and cooling shaping is completed, the injection mold 5 is opened, the movable mold is retreated to the original position, and the product in the fixed mold cavity is taken out.

[0156] The hidden human-computer interface display panel with decorative texture of the embodiment can effectively integrate the vehicle-mounted driving instrument, air conditioner, information entertainment, door and window switch, atmosphere lamp and other systems into an integrated central control panel. The central control panel can have a full-screen texture pattern decoration, or can display a partial LED window. The overall appearance feels like an interior trim part, but hides the combined control function therein. When a hand touches other system components behind the display panel, the wake-up is started, and various functions are instantly presented.

[0157] Embodiment Five:

[0158] As shown in Figure 17 , the difference between the hidden human-computer interface display panel with decorative texture and the decorative film sheet of the embodiment and the embodiment four is that: in the embodiment, a black shielding printing layer 25 is further arranged between the white light-shielding beacon and window printing layer 24 and the adhesive layer 26, the printing pattern of the black shielding printing layer 25 is the same as that of the white light-shielding beacon and window printing layer 24, which is used for overprinting black ink to enhance the shielding of the backlight illumination at the non-display pattern position, so that the two layers of solid bottom overprinting printing achieve the effect of completely shielding and not transmitting light. In addition, a transparent hardening protective coating layer 29 is further covered on the frontmost outer layer of the decorative film sheet 2 (i.e. the protective film sheet layer 20), which has the effects of scratch prevention and corrosion prevention.

[0159] Correspondingly, the difference between the manufacturing method of the hidden human-computer interface display panel with decorative texture and the decorative film sheet of the embodiment and the embodiment four is that: after step (A4), before forming the adhesive layer 26, it further includes: overprinting black ink on the back of the white light-shielding beacon and window printing layer 24 to form a black shielding printing layer 25, using a screen printing missing printing method, so that the printing pattern formed by the black ink in the hollow part is the same as that of the white light-shielding beacon and window printing layer 24, and the printing content of the beacon and window hollow part is expanded by 0.15-0.6mm than the corresponding hollow part on the white light-shielding beacon and window printing layer 24, avoiding the overprinting color offset and causing ghosting defects.

[0160] In addition, after the in-mold decoration injection molding of the display panel in step (C), a transparent hard protective coating 29 is formed on the outermost layer of the front surface of the decorative film 2 (i.e., the protective film layer 20) by a spraying process, which has the functions of scratch resistance and corrosion resistance; the transparent hard protective coating 29 is formed at the end, which can avoid the defects of instability or damage caused by high temperature during the cutting, preforming and in-mold decoration injection molding steps in the process of manufacturing the decorative film.

[0161] The remaining features of this embodiment are the same as those of Embodiment Four.

[0162] Embodiment Six:

[0163] As shown in Figure 18 The difference between the decorative-textured hidden human-computer interface display panel and the decorative film of this embodiment and those of Embodiment One is that, in this embodiment, the decorative-textured hidden human-computer interface display panel includes a light-transmitting bottom plate 6 and a decorative film 2, but does not include the light-transmitting support 1 of Embodiment One, and the decorative film 2 does not include an adhesive layer 26. In this embodiment, the light-transmitting bottom plate 6 is made of a planar light-transmitting plastic, and can also be made of glass. The decorative film 2 is bonded and fixed to the front surface of the light-transmitting bottom plate 6.

[0164] Correspondingly, the difference between the manufacturing method of the decorative-textured hidden human-computer interface display panel and the decorative film of this embodiment and that of Embodiment One is that, in this embodiment, after the preformed decorative film in step (A), the following steps are further included:

[0165] (B) Fixing and forming of the display panel: the preformed decorative film 2 is bonded and fixed to the front surface of the light-transmitting bottom plate 6 by double-sided adhesive tape or other bonding materials.

[0166] This embodiment is a simplified version of the display panel and the decorative film, which is more suitable for modifying existing equipment, has lower cost, and is convenient to modify.

[0167] The remaining features of this embodiment are the same as those of Embodiment One.

[0168] The above examples are only used to illustrate the features of the present application, and are not intended to limit the scope of the claims. Based on the above examples, those skilled in the art can make appropriate choices and substitutions according to actual needs, which should be included in the protection scope of the present application. For example, on the basis of examples one to three and six, a transparent hard protective coating 29 can be coated on the front surface of the transparent film layer 21, i.e. after the in-mold decoration injection molding of the display panel (examples one to three), or after the pre-formed decorative film 2 (example six), a transparent hard protective coating 29 is formed on the front outermost layer of the decorative film 2 (i.e. the transparent film layer 21) by spraying process, which has the functions of scratch resistance and corrosion resistance; the texture image printed on the texture image printing layer 22 can be wood texture or geometric texture or metal texture or gradient color texture, etc., which can be a monochrome image or a color image.

[0169] In the present application, as for the light-transmitting texture, light-transmitting or transparent film, light-transmitting printing layer, etc., in order to improve the clarity during backlight display, the light transmittance is as large as possible (e.g. 95%), because if there is a video window, insufficient light transmittance will affect the clarity of the video; in actual production, the video window can be made into a transparent window, or the part of the video window is adjusted to the highest light transmittance. However, some designs also have the possibility to pursue concealment, at the expense of the pursuit of higher clarity, at this time the light transmittance can be appropriately reduced, and the beacon, symbol and other marker symbols do not need too high light transmittance.

[0170] The hidden human-computer interface display panel with decorative texture and decorative film of the present application overcome the defects and deficiencies of the prior art, and can effectively integrate the vehicle-mounted driving instrument, air conditioner, information entertainment, door and window switch, atmosphere lamp and other systems into an integrated display panel as a central control display panel. The texture image printing layer is provided to form a texture image with light transmission, which displays the texture image when the back of the display panel is not illuminated by backlight, and the overall appearance is similar to that of ordinary decorative parts, but the combination control and display components are hidden, making the overall appearance simple and elegant with good integration. The white light-shielding beacon and window printing layer are provided to form a beacon and window pattern, which displays the beacon and window pattern when the back of the display panel is illuminated by backlight, i.e. when the control keys or screen provided on the back of the present application are touched by hand, the backlight and other system components are awakened and started, and various functions are instantly presented. Creatively, each system component of the car or other equipment is integrated into an integrated central control display panel, which not only saves space occupation, but also designs and manufactures a simple, high-end and atmospheric decorative effect, and hides the control and display functions therein, with the effect of having a texture image decoration on the surface layer and hiding the lower beacon and window, bringing great creative space and unlimited development prospects to the automobile industry. It can also be extended to other industries such as household appliances, electronic communication, intelligent door lock, etc., with wide innovation and development prospects, which will bring great economic and social benefits to the society. Therefore, the hidden human-computer interface display panel with decorative texture and decorative film of the present application can integrate multiple display and control components into one, and the display panel and decorative film have good adaptability with the surrounding components, with decorative and light-transmitting properties. When control and display are not needed, the control and display parts are hidden, only displaying the set panel texture pattern, with good visual effect. Similarly, the manufacturing method of the hidden human-computer interface display panel with decorative texture and decorative film of the present application also has the above beneficial effects.

[0171] The present application can be widely applied in the field of display panels.

Claims

1. A decorative film sheet for a hidden human-machine interface display panel with a decorative texture, characterized by: The decorative film sheet (2) comprises, from front to back, a transparent film sheet layer (21), a textured image printing layer (22), a light-transmitting white supporting printing layer (23), a white light-shielding beacon and window printing layer (24), the textured image printing layer (22) is used to form a textured image with light transmission on the back of the transparent film sheet layer (21) by printing, so as to display the textured image when the back of the display panel is not illuminated by backlight, the light-transmitting white supporting printing layer (23) is used to print white light-transmitting ink on the back of the textured image printing layer (22), so as to highlight the textured image of the textured image printing layer (22), so that the textured image is displayed clearly and brightly and has high image restoration, and the white light-shielding beacon and window printing layer (24) is used to form a beacon and window pattern on the back of the light-transmitting white supporting printing layer (23) by printing, so as to display the beacon and window pattern when the back of the display panel is illuminated by backlight.

2. The concealed human-machine interface display panel with decorative texture of claim 1, wherein: The transparent film sheet layer (21) is a colored or colorless transparent film sheet made of PET or PMMA or PC or ABS or PC+PMMA material.

3. The decorative film of the hidden human-machine interface display panel with decorative texture according to claim 1, characterized in that: The light-transmitting metal film layer (27) is used to enhance the metallic texture of the textured image printing layer (22), and the transparent light oil printing layer (28) is used to prevent the light-transmitting metal film layer (27) from being oxidized.

4. The decorative film of the hidden human-machine interface display panel with decorative texture according to claim 3, characterized in that: The light-transmitting metal film layer (27) is a metal film formed by vacuum sputtering plating process.

5. The decorative film of the hidden human-machine interface display panel with decorative texture according to claim 3, characterized in that: The light-transmitting metal film layer (27) is a metal film formed by metal silver paste printing process.

6. A decorative film sheet for a hidden human-machine interface display panel with a decorative texture, characterized by: The decorative film sheet (2) comprises, from front to back, a protective film sheet layer (20), a textured image printing layer (22), a white light-transmitting film sheet layer (210), a white light-shielding beacon and window printing layer (24), the textured image printing layer (22) is used to form a textured image with light transmission on the front of the white light-transmitting film sheet layer (210) by printing, so as to display the textured image when the back of the display panel is not illuminated by backlight, the protective film sheet layer (20) is used to protect the textured image printing layer (22), the white light-transmitting film sheet layer (210) is used to fix and highlight the textured image of the textured image printing layer (22), so that the textured image is displayed clearly and brightly and has high image restoration, and the white light-shielding beacon and window printing layer (24) is used to form a beacon and window pattern by printing, so as to display the beacon and window pattern when the back of the display panel is illuminated by backlight.

7. The decorative film of the hidden human-machine interface display panel with decorative texture according to claim 6, characterized in that: The white light-transmitting film sheet layer (210) is a white light-transmitting film sheet made of PET or PMMA or PC or ABS or PC+PMMA material.

8. The decorative film of the hidden human-machine interface display panel with decorative texture according to claim 7, characterized in that: The white light-transmitting film sheet layer (210) has a light transmission rate of 15% to 95% and a thickness of 0.05 to 0.6 mm.

9. The decorative film sheet for a hidden human-machine interface display panel with a decorative texture according to claim 1 or 6, characterized by: The back of the white light-shielding beacon and window printing layer (24) is also provided with a black shielding printing layer (25), the printing pattern of the black shielding printing layer (25) is the same as that of the white light-shielding beacon and window printing layer (24), which is used for overprinting black ink to enhance the backlight illumination at the non-display pattern.

10. The decorative film sheet for a hidden human-machine interface display panel with a decorative texture according to claim 1 or 6, characterized by: The texture image printed on the texture image printing layer (22) is wood grain texture or geometric texture or metal texture or gradient color texture, which is a monochrome image or a color image.

11. The decorative film sheet for a hidden human-machine interface display panel with a decorative texture according to claim 1 or 6, characterized by: The outermost layer of the front of the decorative film (2) is further covered with a transparent hard protective coating (29).

12. A concealed human-machine interface display panel with decorative texture, characterized in that: The transparent support (1) and the decorative film (2) according to any one of claims 1-11 are integrally formed by in-mold decoration injection molding, and the outermost layer of the back of the decorative film (2) is further provided with an adhesive layer (26) for fusing the decorative film (2) and the transparent support (1) during in-mold decoration injection molding.

13. The decorative film of the hidden human-machine interface display panel with decorative texture according to claim 12, characterized in that: The transparent support (1) is formed by injection molding of ABS or PMMA or PC or PET resin material.

14. A concealed human-machine interface display panel with decorative texture, characterized in that: The transparent support (1) is formed by injection molding of ABS or PMMA or PC or PET resin material.

15. The decorative film of the hidden human-machine interface display panel with decorative texture according to claim 14, characterized in that: The transparent support (1) is formed by injection molding of ABS or PMMA or PC or PET resin material. The transparent support (1) is formed by injection molding of ABS or PMMA or PC or PET resin material.

16. A method for manufacturing the decorative film of the hidden human-computer interface display panel with decorative texture according to claim 1, comprising the following steps: (A1) cutting the transparent film material into a pre-designed size as a transparent film layer (21); (A2) printing a texture image on the back of the transparent film layer (21) by printing to form a texture image printing layer (22); (A3) printing white light-transmitting ink on the back of the texture image printing layer (22) to form a light-transmitting white bottom printing layer (23); 17. The method of manufacturing a decorative film for a hidden human-machine interface display panel with decorative texture according to claim 16, characterized in that: (A4) printing a white light-shielding bottom on the back of the light-transmitting white bottom printing layer (23) while hollowing out the contents such as beacons and windows to form a white light-shielding beacon and window printing layer (24).

18. The method of manufacturing a decorative film for a hidden human-machine interface display panel with decorative texture according to claim 16, characterized in that: After forming the texture image printing layer (22) in step (A2) and before forming the light-transmitting white bottom printing layer (23) in step (A3), a metal film layer (27) is formed on the back of the texture image printing layer (22) by vacuum sputtering plating process, and then a transparent light oil printing layer (28) is formed by printing IMD special transparent light oil after forming the metal film layer (27). After forming the texture image printing layer (22) in step (A2) and before forming the light-transmitting white bottom printing layer (23) in step (A3), a metal film layer (27) is formed on the back of the texture image printing layer (22) by vacuum sputtering plating process, and then a transparent light oil printing layer (28) is formed by printing IMD special transparent light oil after forming the metal film layer (27).

19. The method of manufacturing a decorative film for a hidden human-machine interface display panel with decorative texture according to claim 18, characterized in that: The metal ink is prepared by mixing transparent varnish, mirror silver paste and color ink, and the weight ratio is: transparent varnish 100 parts, mirror silver paste 1-45 parts, and color ink 0-5 parts.

20. The method of manufacturing a decorative film for a hidden human-machine interface display panel with decorative texture according to claim 16, characterized in that: In step (A2), a CMYK four-color screen printing screen is made by using reverse screen printing process, and the four-color overprint is performed on the back of the transparent film layer (21) in the order of K-Y-M-C to print the light-transmitting texture image. After each printing, surface drying treatment is performed.

21. The method of manufacturing a decorative film for a hidden human-machine interface display panel with decorative texture according to claim 16, characterized in that: In step (A2), the light-transmitting texture image is directly printed on the back of the transparent film layer (21) by using digital printing.

22. The method of manufacturing a decorative film for a hidden human-machine interface display panel with decorative texture according to claim 16, characterized in that: In step (A3), the white light-transmitting ink is prepared by mixing varnish and white ink, and the weight ratio between the two is: varnish 100 parts, and white ink 5-45 parts.

23. A method for manufacturing the decorative film of the hidden human-computer interface display panel with decorative texture according to claim 6, comprising the following steps: (A1) cutting and opening the white light-transmitting film material to a predetermined size as the white light-transmitting film layer (210); (A2) printing a light-transmitting texture image on a transfer film by printing, and then transferring the texture image to the front of the white light-transmitting film layer (210) by heat transfer to form a texture image printing layer (22); (A3) covering a transparent film on the white light-transmitting film layer (210) on the front of the texture image printing layer (22) to form a protective film layer (20); (A4) printing a white light-blocking bottom on the back of the white light-transmitting film layer (210) while hollowing out the light-transmitting contents such as beacons and windows to form a white light-blocking beacon and window printing layer (24).

24. The method of manufacturing a decorative film for a hidden human-machine interface display panel with decorative texture according to claim 23, characterized in that: In step (A2), a rotary printing machine is used to print the light-transmitting texture image on the transfer film by using intaglio printing process.

25. The method of manufacturing a decorative film for a hidden HID panel according to claim 16 or 23 or the hidden HID panel with decorative texture according to claim 24, wherein: In step (A4), the white bottom solid printing is performed by using screen printing to hollow out the beacons and windows to form the light-transmitting contents of the hollowed-out beacons and windows.

26. The method of manufacturing a decorative sheet for a hidden human-machine interface display panel with decorative texture according to claim 16 or 23, characterized in that: After step (A4), it further comprises: overprinting black ink on the back of the white light-blocking beacon and window printing layer (24) to form a black shielding printing layer (25), and using screen printing to hollow out the black ink to form a printing pattern identical to the pattern of the white light-blocking beacon and window printing layer (24), and to make the hollowed-out printing contents of the beacons and windows larger than the periphery of the corresponding hollowed-out part on the white light-blocking beacon and window printing layer (24) by 0.15-0.6 mm.

27. The method of manufacturing a decorative sheet for a hidden human-machine interface display panel with decorative texture according to claim 16 or 23, characterized in that: After all the steps are completed, it further comprises: printing adhesive on the back of the decorative film (2) to form an adhesive layer (26); and finally performing drying treatment.

28. A method for manufacturing the hidden human-computer interface display panel with decorative texture according to claim 12, comprising the following steps: (A) preparation of the decorative film: The method for manufacturing the decorative film of the hidden human-computer interface display panel with decorative texture according to any one of claims 16-27, wherein the decorative film (2) is prepared; (B) Cutting and preforming of the decorative film sheet: using a die cutter, the decorative film sheet (2) after printing is cut to achieve the preset shape and size; then using a film forming machine and a forming die (4), the cut decorative film sheet (2) is preformed by hot pressing to achieve the preset three-dimensional shape; (C) In-mold decorative injection molding of the display panel: using the in-mold decorative injection molding process, the preformed decorative film sheet (2) is placed in the mold cavity of the injection mold (5), and the molten transparent resin is injected into the bottom of the decorative film sheet (2) through the injection port of the injection mold, and the film decoration and injection are integrated in the mold cavity to manufacture the display panel.

29. The method of manufacturing a concealed human-machine interface display panel with decorative texture according to claim 28, characterized in that: After step (C) is completed, it further includes: coating a hardening agent on the outermost layer of the front surface of the decorative film sheet (2) to form a transparent hard protective coating (29).

30. The method of manufacturing a concealed human-machine interface display panel with decorative texture of claim 28, wherein: Step (B) includes the following steps: (B1) using a die cutter, the decorative film sheet (2) after printing is cut into single sheets to achieve the preset shape and size requirements; (B2) the cut decorative film sheet (2) is placed in the lower mold cavity of the forming die (4) of the film forming machine using the film positioning device; (B3) start the mold opening action, the heater of the film forming machine is balanced and stretched between the upper and lower molds, and the decorative film sheet (2) in the lower mold cavity is heated. After the decorative film sheet (2) is softened, the heater returns to its original position, the film forming machine starts the upper mold, and the mold is closed instantly. The softened decorative film sheet (2) is pressed and clamped between the upper and lower mold cavities; (B4) start the temperature regulation system of the upper and lower molds to cool and shape the decorative film sheet (2); (B5) after the decorative film sheet (2) is shaped, start the mold opening system, separate the upper and lower molds, and the upper mold returns to its original position. The lower mold cavity ejects the decorative film sheet (2) and takes out the preformed decorative film sheet (2).

31. The method of producing a concealed human-machine interface display panel with decorative texture according to claim 28, characterized in that: Step (C) includes the following steps: (C1) the preformed decorative film sheet (2) is connected and fixed to the film positioning device of the front mold cavity of the injection mold (5), and the front surface of the decorative film sheet (2) is tightly attached to the front mold cavity; (C2) start the injection molding of the injection molding machine, and the resin in the molten state in the screw barrel of the injection molding machine is shot out from the screw nozzle and injected into the mold cavity of the injection mold (5) through the injection port of the injection mold; (C3) the molten resin injected into the mold cavity under high temperature and high pressure is directly injected into the bottom of the decorative film sheet (2) in the mold cavity through the glue inlet, and flows at high speed to all parts of the inner wall of the mold cavity. The decorative film sheet (2) softens at high temperature, and tightly adheres to the inner mold wall along the resin flow direction under the flow pressure of the molten resin under high temperature and high pressure, and is integrated with the transparent resin, and is formed in the mold cavity; (C4) after the injection molding machine automatically recognizes that the mold cavity is full, start the pressure maintaining and cooling system; after the pressure maintaining and cooling shaping is completed, the injection mold (5) is opened, the movable mold returns to its original position, and the product in the fixed mold cavity is taken out.

32. A method of manufacturing the hidden human-computer interface display panel with decorative texture according to claim 14, comprising the following steps: (A) preforming of the decorative film sheet: The method for manufacturing a decorative film sheet of a hidden human-machine interface display panel with decorative texture according to any one of claims 16-27, a pre-manufactured decorative film sheet (2); (B) Fixed forming of the display panel: bonding and fixing the pre-formed decorative film sheet (2) to the front surface of the light-transmitting bottom plate (6).

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