Coated cover plate capable of changing color

Abstract

The utility model discloses a film-coated cover plate capable of changing colors, which relates to the field of display screens and comprises a substrate, the substrate is provided with a front surface and a back surface, the front surface of the substrate is provided with a film-coated layer, the back surface of the substrate is provided with a color-changing ink layer in a silk-screen printing manner, and the color-changing ink layer can change colors under different conditions. One surface, far away from the substrate, of the color-changing ink layer covers the substrate layer; according to the film-coated cover plate capable of changing colors, the film-coated layer is arranged on the front face of the base plate, the protection performance of the cover plate on hardness, abrasion resistance, chemical stability and thermal stability is improved, the color-changing ink layer is arranged on the back face of the base plate, the cover plate can change colors according to using conditions, the attractiveness of a product is improved, and the service life of the product is prolonged. The cover plate is simple in structure, the functionality is increased, the protection performance and the attractiveness of the cover plate are improved, the performance of the cover plate is comprehensively optimized, and the use requirements of high-end electronic products and special application scenes can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to display screen technical field especially relates to a kind of film-coated cover plate of variable color. BACKGROUND

[0002] With the continuous development of modern science and technology, as an important part of various electronic display devices, household supplies and transportation tools, the performance requirements of cover plate are also increasingly high. With the rapid development of science and technology in electronic devices, the application of substrate in many fields is increasingly widespread, such as smart phones, tablet computers, vehicle-mounted displays, etc. The display screen of some outdoor electronic devices is often exposed to the outside, which is easily exposed to direct sunlight. Some electronic devices also need to be used in high-temperature environments, and the internal temperature of the electronic device rises, which easily causes the aging of the electronic device, thus undoubtedly shortening the service life of the display screen.

[0003] Patent application No. 201721889507.2 discloses a temperature-sensitive cover plate and electronic device, comprising a cover plate body and a temperature-changing ink layer provided on the surface of the cover plate body. The temperature-changing ink layer presents different colors at different temperatures. The cover plate body is a front cover plate body or a rear cover plate body. The thickness of the temperature-changing ink layer is 5-10 μm. It also includes a base color layer provided on the surface of the temperature-changing ink layer or between the cover plate body and the temperature-changing ink layer. This scheme sets a temperature-changing ink layer on the surface of the cover plate body. Since the temperature-changing ink layer presents different colors at different temperatures, the temperature-changing ink layer presents different colors after the temperature of the cover plate body changes continuously. When the temperature of the cover plate body is too high, a predetermined color is displayed, the corresponding device is turned off or restarted, and the normal use efficiency and service life are improved.

[0004] Chinese patent application No. CN201621320160.5 discloses a film-coated cover plate and touch screen product, comprising a glass substrate, a vacuum-coated film structure layer provided on the glass substrate, and an ink coating layer provided on the vacuum-coated film structure layer. The vacuum-coated film structure layer is composed of at least one multi-structure film-coated film. The multi-structure film-coated film has laser etching lines. The multi-structure film-coated film is a different combination of SiO2, Nb2O5, CrO, TiO2, ZrO2, and Al2O3 film layers. In this structure, different colors are obtained by using different vacuum-coated film structure layers. Special lines are etched on the multi-structure film-coated film by laser etching. Finally, the required ink is overlaid on the film layer to protect it. The final color-coated cover plate and touch screen product have a bright and colorful effect with special lines and dazzling colors. The product has clear and beautiful lines, rich colors, and beautiful colors, with a mirror effect, which can greatly improve the appearance of the touch screen product.

[0005] However, with the rapid development of science and technology, the requirements of electronic products on the cover plate are increasing, not only excellent physical protection performance such as hardness, wear resistance, chemical stability and thermal stability are needed, but also aesthetics and functionality are considered, and the traditional cover plate is difficult to meet these comprehensive needs. Therefore, the utility model discloses a kind of film-coated cover plate capable of changing color to solve the above problems. Utility model content

[0006] Therefore, it is necessary to provide a film-coated cover plate capable of changing color to solve the above technical problems, which realizes the double improvement of the cover plate in protection performance and aesthetics, optimizes the performance of the cover plate comprehensively, and meets the use requirements of high-end electronic products and special application scenarios.

[0007] To solve the above technical problems, the utility model adopts the technical scheme as follows:

[0008] A film-coated cover plate capable of changing color includes a substrate, the substrate has a front surface and a back surface, the front surface of the substrate is provided with a film-coated layer, the back surface of the substrate is silk-screen printed with a color-changing ink layer, the color-changing ink layer can change color under different conditions, and the surface of the color-changing ink layer away from the substrate is covered with a base layer.

[0009] As a preferred embodiment of the film-coated cover plate capable of changing color provided by the utility model, the substrate is a transparent glass plate or a transparent acrylic plate.

[0010] As a preferred embodiment of the film-coated cover plate capable of changing color provided by the utility model, the film-coated layer includes a zirconium nitride layer, a niobium nitride layer and a zinc oxide layer, the zirconium nitride layer is plated on the front surface of the substrate, the niobium nitride layer is plated on the surface of the zirconium nitride layer, and the zinc oxide layer is plated on the surface of the niobium nitride layer.

[0011] As a preferred embodiment of the film-coated cover plate capable of changing color provided by the utility model, the thickness of the zirconium nitride layer is 0.1-0.2 microns, the thickness of the niobium nitride layer is 0.2-0.3 microns, and the thickness of the zinc oxide layer is 0.1-0.2 microns.

[0012] As a preferred embodiment of the film-coated cover plate capable of changing color provided by the utility model, the color-changing ink layer is a temperature-sensitive color-changing ink layer or a light-sensitive color-changing ink layer, the temperature-sensitive color-changing ink layer can change color with the change of temperature, and the light-sensitive color-changing ink layer can change color with the change of light intensity or specific wavelength of light.

[0013] As a preferred embodiment of the film-coated cover plate capable of changing color provided by the utility model, the substrate includes a visible area and an invisible area, and the color-changing ink layer is arranged in the invisible area.

[0014] As a preferred embodiment of the utility model provides can change the film-coated cover plate, the surface of substrate layer close to the color change ink layer is equipped with pattern layer, and the color change ink layer has transparent state, when the color change ink layer becomes transparent state, the pattern of pattern layer is displayed.

[0015] As a preferred embodiment of the utility model provides can change the film-coated cover plate, the size of color change ink layer is less than the size of substrate layer, so that substrate layer covers color change ink layer.

[0016] As a preferred embodiment of the utility model provides can change the film-coated cover plate, the color change ink layer is the structure of square frame and the thickness is 6-8 microns.

[0017] As a preferred embodiment of the utility model provides can change the film-coated cover plate, the color change ink layer is divided into multiple areas in the range of square frame structure and is silk-screened different color change ink between areas, so that under the same environment, color change ink layer presents different colors.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the film-coated cover plate provided by the utility model improves the protection performance of the cover plate in hardness, wear resistance, chemical stability and thermal stability by setting the film layer on the front surface of the substrate, sets the color change ink layer on the back surface of the substrate, so that the cover plate can change color with the use condition, improves the appearance of the product, increases the functionality, realizes the double promotion of the protection performance and the appearance of the cover plate, optimizes the performance of the cover plate, and meets the use requirements of high-end electronic products and special application scenarios. ACCURACY

[0019] In order to more clearly illustrate the scheme in the utility model, the drawings needed in the embodiment description will be simply introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0020] Figure 1 It is the overall structure side view schematic drawing of the film-coated cover plate provided by the utility model can change color;

[0021] Figure 2 It is the front plane schematic diagram of the film-coated cover plate provided by the utility model can change color;

[0022] Figure 3 It is the back plane schematic diagram of the film-coated cover plate provided by the utility model can change color;

[0023] Figure 4The silkscreen diagram of the color-changing ink layer in the color-changing coated cover plate is provided.

[0024] The marks in the figure are explained as follows:

[0025] 1, substrate; 101, visible area; 102, invisible area; 2, zirconium nitride layer; 3, niobium nitride layer; 4, zinc oxide layer; 5, color-changing ink layer; 6, base layer. DETAILED DESCRIPTION

[0026] In order for those skilled in the art to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0027] As described in the background, with the rapid development of science and technology, the requirements of electronic products on cover plates are increasing, not only excellent physical protection performance such as hardness, wear resistance, chemical stability and thermal stability are required, but also aesthetic and functional properties are required, and traditional cover plates have been difficult to meet these comprehensive needs.

[0028] In order to solve this technical problem, the present application provides a color-changing coated cover plate, which is applied to the field of display screens.

[0029] Specifically, please refer to Figures 1-4 The color-changing coated cover plate specifically comprises a substrate 1, the substrate 1 has a front surface and a back surface, the front surface of the substrate 1 is provided with a coating layer, the back surface of the substrate 1 is silk-screen printed with a color-changing ink layer 5, the color-changing ink layer 5 can change color under different conditions, and a surface of the color-changing ink layer 5 away from the substrate 1 is covered with a base layer 6.

[0030] The color-changing coated cover plate provided by the present application improves the protection performance of the cover plate in hardness, wear resistance, chemical stability and thermal stability by providing a coating layer on the front surface of the substrate 1, and changes the color of the cover plate according to the use conditions by providing a color-changing ink layer 5 on the back surface of the substrate 1, which not only improves the aesthetic degree of the product, but also increases its functionality, realizes the double improvement of the cover plate in protection performance and aesthetic degree, optimizes the performance of the cover plate, and can meet the use requirements of high-end electronic products and special application scenarios.

[0031] In order for those skilled in the art to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0032] It should be noted that the embodiments in the utility model and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0033] It should be noted that: similar signs and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0034] Embodiment one

[0035] Please refer to Figures 1-4 , provides a kind of film-coated cover plate capable of changing color, it includes substrate 1, substrate 1 has front and back, the front of substrate 1 is equipped with film-coated layer, the back of substrate 1 is printed with color-changing ink layer 5, color-changing ink layer 5 can change color under different conditions, the surface of color-changing ink layer 5 away from substrate 1 covers base layer 6.

[0036] Substrate 1 is transparent glass plate or transparent acrylic plate, of course, substrate 1 can be prepared with flexible transparent material when being applied to display device, so that cover plate can be folded, so it can be applied to flexible, foldable display device accessories, can be made of UTG (Ultra Thin Glass, ultra-thin flexible glass), CPI (Colorless Polyimide, transparent polyimide film), PET (Polyethylene Terephthalate, polyethylene terephthalate) and other transparent, soft, foldable materials.

[0037] Film-coated layer includes zirconium nitride layer 2, niobium nitride layer 3 and zinc oxide layer 4, zirconium nitride layer 2 is plated on the front of substrate 1, niobium nitride layer 3 is plated on the surface of zirconium nitride layer 2, zinc oxide layer 4 is plated on the surface of niobium nitride layer 3, the thickness of zirconium nitride layer 2 is 0.1-0.2 microns, the thickness of niobium nitride layer 3 is 0.2-0.3 microns, the thickness of zinc oxide layer 4 is 0.1-0.2 microns.Zirconium nitride has high hardness, high wear resistance, good chemical stability and thermal stability, as a bottom layer, it can effectively protect glass from scratching and chemical corrosion, at the same time, it can improve the adhesion of the whole film-coated layer, niobium nitride also has high hardness and good chemical stability, which can further enhance the wear resistance and corrosion resistance of cover plate, zinc oxide has good light transmittance and ultraviolet shielding ability, which can protect internal components from ultraviolet damage and user's vision, at the same time, its surface is easy to clean, which helps to maintain the cleanliness of cover plate. Multi-layer film-coated structure protects substrate 1 from physical wear, chemical corrosion and ultraviolet radiation in many aspects, ensuring the long-term stability and reliability of cover plate product.

[0038] The addition of the color-changing ink layer 5 not only improves the aesthetics of the product, but also increases the interest and interactivity of the product, thereby increasing the added value and attractiveness of the product. At the same time, such ink can also be used as an indicator for monitoring in specific situations. Specifically, the color-changing ink layer 5 is a thermochromic ink layer 5 or a photochromic ink layer 5. The thermochromic ink layer 5 can change color with changes in temperature, and the photochromic ink layer 5 can change color with changes in light intensity or specific wavelength of light.

[0039] The thermochromic ink is a special color-changing ink. The thermochromic ink can change color according to changes in temperature. When the temperature rises or falls to a certain extent, the color of the ink will change significantly. This color-changing effect is reversible. When used as an indicator, the thermochromic ink is transparent at room temperature. As the temperature rises, the color of the thermochromic ink gradually deepens. Users can determine the temperature of the substrate 1 based on the color, thereby determining the use temperature of the display device, and determining the temperature of the display product using the substrate 1, so that users can use electronic products reasonably and healthily. It can also be applied to outdoor billboards, advertising display screens, etc. As the outdoor temperature changes, the color of the substrate 1 changes, thereby attracting passing pedestrians and improving the advertising effect. The color-changing temperature range of the thermochromic ink can be freely designed according to requirements, and the color can also be freely selected. Through different color combinations, more complex and diverse color-changing effects can be achieved.

[0040] In this example, the photochromic ink layer 5 is preferred. Photochromic ink is a special functional ink whose color changes with changes in light conditions. By adding materials with photochromic properties, such as photochromic dyes or toner, dynamic color effects can be achieved. The photochromic ink layer 5 gives the cover plate the unique function of changing color with changes in light. When used as an indicator, it can be used as an indicator of light intensity or specific light.

[0041] Example Two

[0042] The color-changing coated cover plate provided in Example One is further optimized. Specifically, as shown in Figures 1-3 The substrate 1 includes a visible area 101 and a non-visible area 102. The color-changing ink layer 5 is provided in the non-visible area 102, and the base layer 6 is also provided in the non-visible area 102, without affecting the picture display of the visible area 101.

[0043] Of course, the color-changing ink layer 5 can also be provided in the visible area 101. In the conventional state, the color-changing ink layer 5 is transparent, and the corresponding base layer 6 is also transparent. When it reaches the unusable state, the color-changing ink becomes colored, thereby reminding the user. For example, the photochromic ink is a spiropyran ink, a spirooxazine ink, or an azo ink, which is transparent under normal light and develops color under ultraviolet light.

[0044] The surface of the substrate layer 6 close to the color-changing ink layer 5 is provided with a pattern layer, and the color-changing ink layer 5 has a transparent state, and when the color-changing ink layer 5 changes to the transparent state, the pattern of the pattern layer is displayed, which can be a temperature display pattern or a decorative pattern, so as to display different patterns in different use environments, thereby increasing the interestingness and interactivity of the product.

[0045] The thickness of the color-changing ink layer 5 is 6-8 microns, and the size of the color-changing ink layer 5 is smaller than the size of the substrate layer 6, so that the substrate layer 6 covers the color-changing ink layer 5, and the substrate layer 6 is a black ink layer or a black light-shielding paper, which can play a light-shielding effect, and at the same time, the light in the backlight affects the use effect of the color-changing ink layer 5.

[0046] Example Three

[0047] The color-changing film-coated cover plate provided in Example Two is further optimized, specifically, as shown in Figure 3 , 4 The color-changing ink layer 5 is a rectangular frame structure, and the color-changing ink layer 5 is divided into multiple areas within the rectangular frame structure and different color-changing inks are silk-screened between the areas, so that the color-changing ink layer 5 presents different colors in the same environment, further improving the appearance and visual effect of the product. When using light-induced color-changing ink, different color-changing threshold light-induced color-changing materials can be used to make the ink exhibit multiple colors under the same light intensity, for example, part of the material changes to red under specific wavelength light, and another part of the material changes to blue under the same light intensity. This design can make different colors appear in different areas of the color-changing ink layer 5. Of course, light-induced color-changing ink on different substrates (such as white, black, or colored) can also exhibit different colors, and the selection of the substrate color can interact with the transparency or color-changing mechanism of the ink to achieve different visual effects. The color-changing ink is prepared by the same principle.

[0048] The working principle of the film-coated cover plate capable of changing color provided by the utility model is that: multi-layer film coating is carried out on the front surface of the substrate 1 by using chemical substances zinc oxide, zirconium nitride and niobium nitride, and the back surface of the substrate 1 is silk-screen printed with color-changing ink. Zirconium nitride is used as a bottom layer, high hardness, high wear resistance and excellent chemical stability are utilized to provide a solid protection foundation for the overall film-coated layer, niobium nitride is used as an intermediate layer to further enhance the wear resistance and corrosion resistance of the cover plate, and specific electrical or optical properties can be exhibited according to specific requirements, and zinc oxide is used as a surface layer to effectively block ultraviolet rays while ensuring good light transmission, thereby protecting internal components and user vision, the back surface of the substrate 1 is silk-screen printed with color-changing ink, so that the color of the cover plate can be changed with different use conditions, the appearance of the product is improved, and the functionality is also increased. The combination of the multi-layer film coating and the color-changing ink realizes comprehensive optimization of the substrate 1 in hardness, wear resistance, chemical stability, thermal stability, light transmission, ultraviolet shielding and color changing, and can meet the use requirements of high-end electronic products and special application scenarios.

[0049] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection or each other can communicate;Can be direct connection, also can indirectly connect through intermediate medium, can be the communication or the interaction relationship of two elements of two elements, unless another definite limitation. For ordinary skilled person in the art, the above terms can be understood according to the specific meaning of the utility model.

[0050] Obviously, the above-described embodiments are only a part of the embodiments of the utility model, and not all the embodiments, and the preferred embodiments of the utility model are given in the drawings, but do not limit the patent range of the utility model. The utility model can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or make equivalent replacement to part of the technical features. Any equivalent structure made by using the contents of the utility model specification and drawings, directly or indirectly used in other related technical fields, is also within the patent protection range of the utility model.

Claims

1. A color changeable coated cover plate comprising a substrate having a front side and a back side, characterized in that, The front surface of the substrate is provided with a coating layer, the back surface of the substrate is printed with a color-changing ink layer, the color-changing ink layer can change color under different conditions, and the color-changing ink layer covers the base layer away from the surface of the substrate.

2. The color-changeable coated cover plate according to claim 1, wherein, The substrate is a transparent glass plate or a transparent acrylic plate.

3. The color-changeable coated cover plate according to claim 1, wherein, The coating layer includes a zirconium nitride layer, a niobium nitride layer, and a zinc oxide layer, the zirconium nitride layer is coated on the front surface of the substrate, the niobium nitride layer is coated on the surface of the zirconium nitride layer, and the zinc oxide layer is coated on the surface of the niobium nitride layer.

4. The color-changeable coated cover plate according to claim 3, characterized in that, The thickness of the zirconium nitride layer is 0.1-0.2 microns, the thickness of the niobium nitride layer is 0.2-0.3 microns, and the thickness of the zinc oxide layer is 0.1-0.2 microns.

5. The color-changeable coated cover plate according to claim 1, wherein, The color-changing ink layer is a temperature-sensitive color-changing ink layer or a light-sensitive color-changing ink layer, the temperature-sensitive color-changing ink layer can change color with temperature changes, and the light-sensitive color-changing ink layer can change color with changes in light intensity or specific wavelength light.

6. The color-changeable coated cover plate according to claim 1, wherein, The substrate includes a visible area and an invisible area, and the color-changing ink layer is arranged in the invisible area.

7. The color-changeable coated cover plate according to claim 1, wherein, The surface of the base layer close to the color-changing ink layer is provided with a pattern layer, and the color-changing ink layer has a transparent state, and when the color-changing ink layer becomes transparent, the pattern of the pattern layer is displayed.

8. The color-changeable coated cover plate according to claim 7, characterized in that, The size of the color-changing ink layer is smaller than the size of the base layer, so that the base layer covers the color-changing ink layer.

9. The color-changeable coated cover plate according to claim 1, wherein, The color-changing ink layer is a rectangular frame structure and has a thickness of 6-8 microns.

10. The color-changeable coated cover plate according to claim 9, characterized in that, The color-changing ink layer is divided into multiple areas within the rectangular frame structure, and different color-changing inks are printed between the areas, so that the color-changing ink layer presents different colors under the same environment.

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