Cover plate capable of changing color when encountering water, touch display module and mobile terminal

Abstract

The utility model discloses a cover plate capable of changing color when encountering water, which comprises a cover plate base layer provided with a display area and a non-display area, and the non-display area surrounds the display area; the water-discoloring ink layer is arranged on the front side surface of the cover plate base layer, only covers the non-display area and avoids the display area; and the primary color ink layer is arranged on the back side surface of the cover plate base layer, only covers the non-display area and avoids the display area. The cover plate capable of changing color when encountering water can indicate the humidity degree of the environment. The utility model further discloses a touch display module and a mobile terminal. The touch display module and the mobile terminal comprise the cover plate capable of changing color when encountering water.

Description

Technical Field

[0001] This utility model relates to the field of touch display, and in particular to a water-sensitive color-changing cover, a touch display module, and a mobile terminal. Background Art

[0002] Mobile devices such as smartphones encounter a series of problems when used in humid environments. First, humidity can corrode the internal electronic components and motherboard, potentially rendering the phone unusable or even unusable. Moisture can seep into the circuit board, causing water stains and short circuits, oxidizing metal connectors, and distorting or completely blacking out the screen.

[0003] However, current mobile phones cannot indicate the humidity level of the environment, and people are not sensitive to humidity in the air. Therefore, users cannot take their phones away from humid environments in time, which can easily lead to the phone being used in a humid environment for a long time and thus causing damage. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model provides a water-sensitive color-changing cover that can indicate the humidity level of the environment.

[0005] This utility model also provides a touch display module and a mobile terminal, including the above-mentioned water-sensitive color-changing cover.

[0006] The technical problem to be solved by this utility model is achieved through the following technical solution:

[0007] A water-sensitive color-changing cover, comprising:

[0008] A cover plate base layer has a display area and a non-display area, wherein the non-display area surrounds the display area;

[0009] A water-sensitive color-changing ink layer is disposed on the front side surface of the cover plate base layer, and only covers the non-display area, while avoiding the display area;

[0010] A base color ink layer is disposed on the back surface of the cover plate base layer, and covers only the non-display area while avoiding the display area.

[0011] Furthermore, the thickness of the water-sensitive color-changing ink layer is 6-8 μm.

[0012] Furthermore, the color of the water-sensitive color-changing ink layer is transparent when not in contact with water, but differs from the color of the base color ink layer when in contact with water.

[0013] Furthermore, the thickness of the base color ink layer is 5-15 μm.

[0014] Furthermore, the water-sensitive color-changing cover plate also includes an optical coating layer, which is disposed between the cover plate base layer and the water-sensitive color-changing ink layer, and at least covers the display area.

[0015] Furthermore, the optical coating layer includes a molybdenum oxide coating, a chromium trioxide coating, and a cobalt oxide coating sequentially disposed on the front side surface of the cover plate base layer.

[0016] Furthermore, the thickness of the molybdenum oxide coating is 50-100 nm, the thickness of the chromium trioxide coating is 100-200 nm, and the thickness of the cobalt oxide coating is 50-150 nm.

[0017] A touch display module includes a touch screen, a display screen, and the aforementioned water-sensitive color-changing cover plate. The touch screen is disposed on one side surface of the water-sensitive color-changing cover plate with the base color ink layer, and the display screen is disposed on the side surface of the touch screen away from the water-sensitive color-changing cover plate.

[0018] Furthermore, the touchscreen is a touch glass or a touch film, and the display screen is an LCD screen or an OLED screen.

[0019] A mobile terminal includes the aforementioned touch display module.

[0020] The present invention has the following beneficial effects: The water-sensitive color-changing cover of the present invention provides a water-sensitive color-changing ink layer on the front side surface of the cover base. The water-sensitive color-changing ink layer undergoes a reversible color change when it comes into contact with water vapor, thereby indicating the humidity level of the environment to the user and reminding the user to take mobile terminals such as mobile phones away from the humid environment in time, thus avoiding the problem of damage to the mobile phone due to prolonged use in a humid environment. Attached Figure Description

[0021] Figure 1 A schematic diagram of the stacked structure of the water-sensitive color-changing cover plate provided by this utility model.

[0022] Figure 2 A front structural diagram of the water-sensitive color-changing cover provided by this utility model.

[0023] Figure 3 A schematic diagram of the stacking structure of another water-sensitive color-changing cover plate provided by this utility model.

[0024] Figure 4 for Figure 3 The diagram shows the stacked structure of the optical coating layer in the water-sensitive color-changing cover.

[0025] Figure 5 This is a schematic diagram of the stacked structure of the touch display module provided by this utility model. DETAILED DESCRIPTION

[0026] The present invention will now be described in detail with reference to the accompanying drawings and embodiments, examples of which are shown in the drawings. Throughout the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," and "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Example 1

[0031] like Figure 1 and 2 As shown, a water-sensitive color-changing cover includes:

[0032] The cover plate base layer 11 has a display area 111 and a non-display area 112, wherein the non-display area 112 surrounds the display area 111.

[0033] A water-sensitive color-changing ink layer 12 is disposed on the front side surface of the cover plate base layer 11, and only covers the non-display area 112, while avoiding the display area 111;

[0034] A base color ink layer 13 is disposed on the back surface of the cover plate base layer 11, and covers only the non-display area 112 while avoiding the display area 111.

[0035] The water-sensitive color-changing cover of this utility model is provided with a water-sensitive color-changing ink layer 12 on the front side surface of the cover base 11. The water-sensitive color-changing ink layer 12 undergoes a reversible color change when it comes into contact with water vapor, so as to indicate the humidity level of the environment to the user and remind the user to take mobile terminals such as mobile phones away from the humid environment in time, thereby avoiding the problem of damage to the mobile phone due to prolonged use in a humid environment.

[0036] The water-sensitive color-changing ink layer 12 is a special ink that can exhibit reversible color changes according to humidity variations. Its preparation method includes dissolving an aqueous film-forming resin in a solvent to form a solution; mixing a charged pH indicator with a strong acid-weak base metal salt, then mixing the mixture with a polymer adsorption resin to obtain a mixture; adding the mixture to the solution and mixing thoroughly to obtain the water-sensitive color-changing ink; and then curing the water-sensitive color-changing ink on the front and side surfaces of the cover plate base layer 11 by roller coating, spraying, or printing.

[0037] In this embodiment, the thickness of the water-sensitive color-changing ink layer 12 is 6-8 μm. Its color is transparent when dry and changes to one of the following opaque colors upon contact with water: red, blue, or green. The higher the humidity, the deeper the color. Preferably, the color of the water-sensitive color-changing ink layer 12 differs from the color of the base color ink layer 13 when wet, and the greater the color difference, the better, to facilitate user differentiation.

[0038] The base color ink layer 13 is used to provide a base color for the non-display area 112 of the cover plate base layer 11. When the water-sensitive color-changing ink layer 12 is transparent, the non-display area 112 of the cover plate base layer 11 presents the same color as the base color ink layer 13. When the water-sensitive color-changing ink layer 12 is opaque, the non-display area 112 of the cover plate base layer 11 presents the same color as the water-sensitive color-changing ink layer 12.

[0039] In this embodiment, the thickness of the base color ink layer 13 is 5-15μm. In addition to conventional black ink, red ink, blue ink, or green ink and other colored inks can also be used.

[0040] In this embodiment, the cover plate base layer 11 is a glass substrate, preferably tempered glass, with a thickness of 0.2-0.8 mm.

[0041] Preferred, such as Figure 3The water-sensitive color-changing cover plate further includes an optical coating layer 14, which is disposed between the cover plate base layer 11 and the water-sensitive color-changing ink layer 12, and at least covers the display area 111 (and may also cover the non-display area 112 at the same time).

[0042] The optical coating layer 14 is used to improve the optical performance of the cover plate base layer 11 in the display area 111, so as to improve the display effect.

[0043] In this embodiment, as Figure 4 As shown, the optical coating layer 14 includes a molybdenum oxide coating 141, a chromium trioxide coating 142, and a cobalt oxide coating 143 sequentially disposed on the front side surface of the cover plate base layer 11, wherein the thickness of the molybdenum oxide coating 141 is 50-100 nm, the thickness of the chromium trioxide coating 142 is 100-200 nm, and the thickness of the cobalt oxide coating 143 is 50-150 nm.

[0044] The molybdenum oxide coating 141 exhibits good thermal and chemical stability and can be used as a barrier layer to protect the cover plate base layer 11 from subsequent coating processes or environmental influences. Simultaneously, it also improves the light transmittance of the display area 111.

[0045] The chromium trioxide coating 142 possesses excellent optical properties and chemical stability, which can improve the corrosion resistance of the cover plate base layer 11 and help improve the light transmittance and color adjustment of the display area 111. Simultaneously, as a transition layer between the molybdenum oxide coating 141 and the cobalt oxide coating 143, it can improve the bonding stability between the two.

[0046] The cobalt oxide coating 143 can adjust the color of the display area 111 and optimize the reflected color by adjusting its coating thickness, making the cover plate look cooler.

[0047] Example 2

[0048] like Figure 5 As shown, a touch display module includes a touch screen 30, a display screen 50, and a water-sensitive color-changing cover plate 10 as described in Embodiment 1. The touch screen 30 is disposed on the side surface of the water-sensitive color-changing cover plate 10 with the base color ink layer 13, and the display screen 50 is disposed on the side surface of the touch screen 30 away from the water-sensitive color-changing cover plate 10.

[0049] Preferably, the touch screen 30 is bonded and fixed to the water-sensitive color-changing cover plate 10 by a first OCA adhesive 20, and the display screen 50 is bonded and fixed to the touch screen 30 by a second OCA adhesive 40.

[0050] In this embodiment, the touch screen 30 is a touch glass or a touch film, and the display screen 50 is an LCD screen or an OLED screen.

[0051] Example 3

[0052] A mobile terminal includes the touch display module described in Embodiment 2.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present utility model, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the present utility model.

Claims

1. A water-sensitive color-changing cover, characterized in that, include: A cover plate base layer has a display area and a non-display area, wherein the non-display area surrounds the display area; A water-sensitive color-changing ink layer is disposed on the front side surface of the cover plate base layer, and only covers the non-display area, while avoiding the display area; A base color ink layer is disposed on the back surface of the cover plate base layer, and covers only the non-display area while avoiding the display area.

2. The water-sensitive color-changing cover plate according to claim 1, characterized in that, The thickness of the water-sensitive color-changing ink layer is 6-8 μm.

3. The water-sensitive color-changing cover plate according to claim 1, characterized in that, The color of the water-sensitive color-changing ink layer is transparent when not in contact with water, but its color differs from that of the base color ink layer when in contact with water.

4. The water-sensitive color-changing cover plate according to claim 1, characterized in that, The thickness of the base color ink layer is 5-15 μm.

5. The water-sensitive color-changing cover plate according to claim 1, characterized in that, The water-sensitive color-changing cover plate also includes an optical coating layer, which is disposed between the cover plate base layer and the water-sensitive color-changing ink layer, and at least covers the display area.

6. The water-sensitive color-changing cover plate according to claim 5, characterized in that, The optical coating layer includes a molybdenum oxide coating, a chromium trioxide coating, and a cobalt oxide coating sequentially disposed on the front side surface of the cover plate base.

7. The water-sensitive color-changing cover plate according to claim 6, characterized in that, The thickness of the molybdenum oxide coating is 50-100 nm, the thickness of the chromium trioxide coating is 100-200 nm, and the thickness of the cobalt oxide coating is 50-150 nm.

8. A touch display module, characterized in that, The device includes a touch screen, a display screen, and the water-sensitive color-changing cover plate as described in claim 1. The touch screen is disposed on one side surface of the water-sensitive color-changing cover plate with the base color ink layer, and the display screen is disposed on the side surface of the touch screen away from the water-sensitive color-changing cover plate.

9. The touch display module according to claim 8, characterized in that, The touchscreen is a touch glass or a touch film, and the display screen is an LCD screen or an OLED screen.

10. A mobile terminal, characterized in that, Includes the touch display module as described in claim 8.

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