Single-ray perspective full-developing panel and preparation method thereof

Abstract

The invention provides a single-ray perspective full-development panel and a preparation method thereof, and belongs to the field of glass panel preparation. According to the preparation method, a SiO2 film, an Ag film, a TiN film and a SiO2 film are sequentially plated on the back surface of a glass substrate by adopting a magnetron sputtering coating process. Wherein the Ag film is used for providing high reflectivity (gt; 70%) and partial transmission (20-50%); the TiN film is used for preventing Ag oxidation and prolonging the service life; the SiO2 film on the outermost layer is used for improving the visible light transmittance and reducing glare; and the four coating films are matched to form the colored semi-permeable film with a one-way light transmission function. And then, manufacturing structural textures on the front surface of the glass substrate by adopting a UV (Ultraviolet) imprinting process to obtain a single-light perspective full-development panel. The panel is applied to a household appliance operation panel, when a screen works, content can be clearly displayed, in a screen turn-off state, the product appearance is an integral body, a back display screen cannot be seen, the uniformity of the product appearance is ensured, and the overall design aesthetic feeling of the product and the user experience are improved.

Description

Technical Field

[0001] This invention relates to the field of glass panel manufacturing technology, specifically to a fully developable panel with unidirectional light transmission and its manufacturing method. Background Technology

[0002] More and more home appliances are incorporating displays, such as refrigerators, washing machines, air conditioners, and microwave ovens. Currently, the display panel coating for these products primarily uses two methods: screen printing or embedding the display in a pre-reserved location within the door.

[0003] However, both of these traditional processes have obvious drawbacks, resulting in inconsistent product appearances and affecting the overall design aesthetics and user experience. Summary of the Invention

[0004] In view of the technical problems existing in the background art, this application provides a fully developable panel with unidirectional light transmission and its preparation method. The preparation method is to prepare a colored semi-transparent film with unidirectional light transmission function on the back of the glass by magnetron sputtering process, and to create a structural texture on the front of the glass by UV imprinting process, so as to obtain a fully developable panel with unidirectional light transmission.

[0005] This single-direction light-transmitting full-view panel can clearly display content when in operation. When the screen is off, the product (such as a refrigerator) has a seamless appearance with no visible rear display screen. It is suitable for scenarios with touch or display, such as colored crystal glass for home appliances and glass for kitchen appliances.

[0006] In a first aspect, embodiments of this application provide a method for preparing a fully developable panel with unidirectional light transmission, comprising the following steps: S1, Clean the glass substrate and dry it for later use; S2, SiO2 film, Ag film, TiN film and SiO2 film are sequentially deposited on the back of a dry glass substrate by magnetron sputtering, and then annealed to obtain a colored semi-permeable film with one-way light transmission function. S3, a solvent-based transparent resin bonding layer is rolled onto the front side of the glass substrate; the solvent-based transparent resin coating contains quaternized modified epoxy resin; S4, a UV-curable transparent resin coating is rolled onto the outer surface of the solvent-based transparent resin coating. Before curing, a textured PET film is laid flat onto the UV-curable transparent resin coating, and then subjected to a curing process of 200-1000 mJ / cm². 2 After curing under ultraviolet light, the PET film is peeled off to form a textured layer. Then, the glass substrate is baked at 100-250℃ for 5-20 minutes to obtain a fully transparent panel with unidirectional light transmission.

[0007] Furthermore, when depositing the SiO2 film, metallic Si is used as the target material, the DC power supply is 5KW, the deposition rate is 0.5-0.7nm / s, and the reaction gas is a mixture of O2 and Ar, wherein the O2 / Ar flow ratio is 1:4 and the total gas pressure is 0.3-0.4 Pa.

[0008] Furthermore, when depositing the Ag film, metallic Ag is used as the target material, the DC power supply is 3KW, the deposition rate is 1.2-1.4 nm / s, the reaction gas is pure Ar, and the gas pressure is 0.5-0.6Pa.

[0009] Furthermore, when depositing the TiN film, metallic Ti is used as the target material, and the reaction gas is a mixture of N2 and Ar, wherein N2 / Ar=1:3, the RF power supply power is 4KW, and the gas pressure is 0.4-0.5Pa.

[0010] Furthermore, in step S2, during the annealing process, the annealing is carried out in a nitrogen atmosphere at 230-260°C for 0.5-2 hours.

[0011] Secondly, embodiments of this application provide a fully developable panel with unidirectional light transmission, which is prepared using the aforementioned preparation method and includes a glass substrate, a solvent-based transparent bonding layer, a UV-imprinted transparent texture layer, and a transition layer, a high-reflectivity metal layer, a blocking layer, and an anti-reflection layer, which are sequentially stacked from the front side of the glass substrate upwards.

[0012] Furthermore, the transition layer is a SiO2 film with a thickness of 30±2 nm.

[0013] Furthermore, the highly reflective metal layer is an Ag film with a thickness of 15±1 nm.

[0014] Furthermore, the barrier layer is a TiN film with a thickness of 5 ± 0.5 nm.

[0015] Furthermore, the anti-reflective layer is a SiO2 film with a thickness of 50±2 nm.

[0016] The beneficial effects of this invention are: (1) The preparation method of the unidirectional light-transmitting fully transparent panel of the present invention involves sequentially depositing a SiO2 film, an Ag film, a TiN film, and another SiO2 film on the back of a glass substrate using a magnetron sputtering coating process. The SiO2 film, adhering closely to the back of the glass substrate, enhances film adhesion and adjusts the refractive index; the Ag film provides high reflectivity (>70%) and partial transmission (20-50%); the TiN film prevents Ag oxidation and extends its lifespan; and the outermost SiO2 film improves visible light transmittance and reduces glare. The four coating layers work together to form a colored semi-transparent film with unidirectional light transmission. Then, a structural texture is created on the front of the glass substrate using a UV imprinting process to obtain the unidirectional light-transmitting fully transparent panel. When this panel is applied to a refrigerator, the content is clearly displayed when the screen is working. When the screen is off, the refrigerator's appearance is seamless, with the rear display screen not visible, ensuring the uniformity of the product's appearance and enhancing the overall design aesthetics and user experience.

[0017] (2) The colored semi-permeable film with one-way light transmission function prepared in this invention has high temperature resistance (>650℃) and can match the tempering parameters of existing colored crystal glass.

[0018] (3) The hardness test result of the colored semi-permeable membrane with one-way light transmission function prepared in this invention is ≥6H, which has a certain scratch resistance.

[0019] (4) Compared with existing screen printing processes, the preparation method of the present invention has the advantages of low cost and high yield. The appearance display and concealment effect is something that screen printing cannot achieve.

[0020] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of this application, the accompanying drawings used in this application will be briefly described below. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the fully developable panel with unidirectional light transmission in an embodiment of this application; Figure 2 This is a diagram illustrating the effect of using a fully developing panel with unidirectional light transmission in an embodiment of this application. Detailed Implementation

[0023] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0025] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0028] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces). Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0029] In the existing technology, the display screen on home appliances cannot be hidden when the screen is off, which affects the overall aesthetics of the product.

[0030] The method for preparing a unidirectional light-transmitting fully transparent display panel provided in this application embodiment employs a magnetron sputtering coating process to deposit a colored semi-transparent film with unidirectional light transmission function on the back side of a glass substrate, and to create a structural texture layer on the front side of the glass substrate using a UV imprinting process. When the screen is working, it can clearly display content; when the screen is off, the refrigerator's appearance is a single unit, and the rear display screen is not visible.

[0031] Example 1 This embodiment provides a method for preparing a fully developable panel with unidirectional light transmission, including the following steps: S1. Clean the glass substrate and dry it for later use.

[0032] Specifically, first, the glass substrate is ultrasonically cleaned by sequentially immersing it in an alkaline solution (pH=10~12), deionized water, and anhydrous ethanol for 10 minutes each. Then, plasma cleaning (Ar gas, 300W power, 5 minutes) is performed to remove surface organic matter.

[0033] Finally, dry at 80°C for 30 minutes to ensure no moisture remains.

[0034] S2, using magnetron sputtering, sequentially deposits SiO2 film, Ag film, TiN film, and SiO2 film on the back of a dry glass substrate, and then performs annealing treatment to obtain a colored semi-permeable film with one-way light transmission function.

[0035] Specifically, before coating, the vacuum chamber is evacuated to a base pressure ≤ 5 × 10⁻⁶. -4 Pa, to avoid oxidative impurities affecting the purity of the film.

[0036] Subsequently, a transition layer SiO2 film is first deposited to enhance film adhesion and adjust the refractive index.

[0037] When depositing SiO2 film, metallic Si (99.99% purity) is used as the target material, the DC power supply is 5KW, the deposition rate is 0.5 nm / s, and the reaction gas is a mixture of O2 and Ar, with an O2 / Ar flow ratio of 1:4 and a total pressure of 0.3 Pa.

[0038] The thickness of the SiO2 film is 30±2 nm.

[0039] Next, a high-reflectivity Ag film is deposited to provide high reflectivity (>70%) and partial transmission (20~50%).

[0040] When depositing the Ag film, metallic Ag (99.99% purity) was used as the target material, the DC power supply was 3KW, the deposition rate was 1.2 nm / s, the reaction gas was pure Ar, and the pressure was 0.5Pa.

[0041] The thickness of the Ag film is 15±1nm. If the Ag film is too thick, it will result in insufficient light transmission; if it is too thin, it will result in insufficient reflection.

[0042] Then, a TiN barrier film is deposited to prevent Ag oxidation and extend the lifespan.

[0043] When depositing TiN film, metallic Ti is used as the target material, and the reaction gas is a mixture of N2 and Ar, where N2 / Ar = 1:3. The RF power supply power is 4KW and the gas pressure is 0.4Pa.

[0044] The thickness of the TiN film is 5 ± 0.5 nm.

[0045] Finally, an anti-reflective SiO2 film is deposited to improve visible light transmittance and reduce glare.

[0046] When depositing SiO2 film, metallic Si (99.99% purity) is used as the target material, the DC power supply is 5KW, the deposition rate is 0.5 nm / s, and the reaction gas is a mixture of O2 and Ar, with an O2 / Ar flow ratio of 1:4 and a total pressure of 0.3 Pa.

[0047] The thickness of the anti-reflective SiO2 film is 50±2 nm.

[0048] During annealing, anneal at 230-260℃ for 0.5-2 hours in a nitrogen atmosphere.

[0049] Annealing is used to eliminate internal stress and improve the density of the film.

[0050] Before processing the front side of the glass substrate, the glass substrate with the colored semi-permeable film is first sliced, edged, tempered, and cleaned. Then, a frame protection layer (solvent-based sealing ink layer) is screen-printed on the back side of the colored semi-permeable film for bonding the glass to the refrigerator door frame.

[0051] S3, a solvent-based transparent resin bonding layer is rolled onto the front side of the glass substrate. This solvent-based transparent resin coating contains a quaternary ammonium-modified epoxy resin.

[0052] Preferably, the glass plate is cleaned using a plasma cleaner before the solvent-based transparent resin bonding layer is applied by roller.

[0053] S4, a UV-curable transparent resin coating is rolled onto the outer surface of the solvent-based transparent resin coating. Before curing, a textured PET film is laid flat onto the UV-curable transparent resin coating, and then subjected to a curing process of 200-1000 mJ / cm². 2 After curing under ultraviolet light, the PET film is peeled off to form a textured layer. Then, the glass substrate is baked at 100-250℃ for 5-20 minutes to obtain a fully transparent panel with unidirectional light transmission.

[0054] Please see Figure 1 As shown, the fabricated unidirectional light-transmitting fully developable panel includes a glass substrate, a solvent-based transparent bonding layer, a UV-imprinted transparent texture layer, and a transition layer, a high-reflectivity metal layer, a blocking layer, and an anti-reflection layer, which are stacked sequentially from the front side of the glass substrate upwards.

[0055] The transition layer is a SiO2 film with a thickness of 30±2 nm.

[0056] The highly reflective metal layer is an Ag film with a thickness of 15±1nm.

[0057] The barrier layer is a TiN film with a thickness of 5±0.5nm.

[0058] The anti-reflective layer is a SiO2 film with a thickness of 50±2 nm.

[0059] The appearance color and light transmittance of the colored semi-permeable membrane with unidirectional light transmission function obtained in Example 1 were tested using a spectrophotometer. It can be seen that within the visible light range (380-780nm), the average reflectance of the colored semi-permeable membrane is ≥65%, and the transmittance is ≤25%.

[0060] An adhesion test was conducted on the colored semi-permeable membrane, including a cross-cut test and a tape peel test. No membrane detachment was observed.

[0061] Experiments show that the colored semi-permeable film has high temperature resistance (>650℃) and can be matched with the tempering parameters of existing colored crystal glass.

[0062] The unidirectional light-transmitting fully developable panel 10 prepared in Example 1 was used in a refrigerator, and the effect was as follows: Figure 2 As shown, the screen displays clearly when it is working, and when the screen is off, the refrigerator's exterior appears as a single unit, with the rear display screen not visible.

[0063] Comparative Example 1 Compared with Example 1, the main difference of Comparative Example 1 is that no high-reflectivity Ag film was deposited. The rest is roughly the same as Example 1, and will not be repeated here.

[0064] Comparative Example 2 Compared with Example 1, the main difference of Comparative Example 1 is that no barrier TiN film was deposited. The rest is roughly the same as Example 1, and will not be repeated here.

[0065] Comparative Example 3 Compared with Example 1, the main difference of Comparative Example 1 is that no anti-reflective SiO2 film was deposited. The rest is roughly the same as Example 1, and will not be described again here.

[0066] The performance of the fully developable panels with single-path light transmission prepared in Example 1 and Comparative Examples 1-3 was tested. The specific test items, test methods and test requirements are shown in Table 1 below.

[0067] Table 1 Table 2 Test results of Example 1 and Comparative Examples 1-3 Customer standard sample refers to customer standard color swatch (L value: 72.38, a value: -2.14, b value: -0.6).

[0068] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, without departing from the spirit of this application, are also included in the scope of this application.

Claims

1. A method for preparing a fully developable panel with unidirectional light transmission, characterized in that, The following steps are involved: S1. Clean the glass substrate and dry it for later use. S2, SiO2 film, Ag film, TiN film and SiO2 film are sequentially deposited on the back of a dry glass substrate by magnetron sputtering, and then annealed to obtain a colored semi-permeable film with one-way light transmission function. S3, a solvent-based transparent resin bonding layer is rolled onto the front side of the glass substrate; The solvent-based transparent resin coating contains quaternized modified epoxy resin; S4, a UV-curable transparent resin coating is rolled onto the outer surface of the solvent-based transparent resin coating. Before curing, a textured PET film is laid flat onto the UV-curable transparent resin coating, and then subjected to a curing process of 200-1000 mJ / cm². 2 After curing under ultraviolet light, the PET film is peeled off to form a textured layer. Then, the glass substrate is baked at 100-250℃ for 5-20 minutes to obtain a fully transparent panel with unidirectional light transmission.

2. The method for preparing a fully developable panel with unidirectional light transmission according to claim 1, characterized in that, When depositing SiO2 film, metallic Si is used as the target material, the DC power supply is 5KW, the deposition rate is 0.5-0.7nm / s, and the reaction gas is a mixture of O2 and Ar, with an O2 / Ar flow ratio of 1:4 and a total gas pressure of 0.3-0.4 Pa.

3. The method for preparing a fully developable panel with unidirectional light transmission according to claim 1, characterized in that, When depositing Ag film, metallic Ag is used as the target material, the DC power supply is 3KW, the deposition rate is 1.2-1.4 nm / s, the reaction gas is pure Ar, and the gas pressure is 0.5-0.6Pa.

4. The method for preparing a fully developable panel with unidirectional light transmission according to claim 1, characterized in that, When depositing TiN film, metallic Ti is used as the target material, and the reaction gas is a mixture of N2 and Ar, where N2 / Ar = 1:

3. The RF power supply is 4KW and the gas pressure is 0.4-0.5Pa.

5. The method for preparing a fully developable panel with unidirectional light transmission according to claim 1, characterized in that, In step S2, during the annealing process, the annealing is carried out in a nitrogen atmosphere at 230-260°C for 0.5-2 hours.

6. A fully developable panel with unidirectional light transmission, characterized in that, The panel is prepared by the method of any one of claims 1 to 5 for preparing a fully developable panel with unidirectional light transmission, comprising a glass substrate, a solvent-based transparent bonding layer, a UV-imprinted transparent texture layer, and a transition layer, a high-reflectivity metal layer, a blocking layer, and an anti-reflection layer, which are sequentially stacked from the front side of the glass substrate upwards.

7. The fully developable panel with unidirectional light transmission according to claim 6, characterized in that, The transition layer is a SiO2 film with a thickness of 30±2 nm.

8. The fully developable panel with unidirectional light transmission according to claim 6, characterized in that, The high-reflectivity metal layer is an Ag film with a thickness of 15±1nm.

9. The fully developable panel with unidirectional light transmission according to claim 6, characterized in that, The barrier layer is a TiN film with a thickness of 5 ± 0.5 nm.

10. The unidirectional light transmission fully developable panel according to claim 6, characterized in that, The anti-reflective layer is a SiO2 film with a thickness of 50±2 nm.

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