Temperature indication cover plate and touch display module

Abstract

The utility model discloses a temperature indication cover plate, comprising a glass cover plate having a display area and a frame area surrounding the display area; the transparent heat conduction layer is arranged on the inner side surface of the glass cover plate and covers the display area and the frame area at the same time; the thermochromic ink layer is arranged on the surface of the side, away from the glass cover plate, of the transparent heat conduction layer, only covers the frame area and avoids the display area; and the frame ink layer is arranged on the surface of one side, far away from the transparent heat conduction layer, of the thermochromic ink layer. The temperature indication cover plate can indicate the temperature through temperature sensing discoloration. The utility model further discloses a touch display module which comprises the temperature indication cover plate.

Description

Technical Field

[0001] This utility model relates to touch display technology, and more particularly to a temperature indicator cover and a touch display module. Background Technology

[0002] During prolonged use, touch display modules inevitably generate significant heat from both the touch panel and the display panel. This is because the internal electronic components undergo frequent charge movement and energy conversion under high-intensity operating conditions, releasing substantial heat. As the temperature of the touch display module gradually rises, the speed of electron flow and molecular activity within it are affected to some extent. Specifically, at high temperatures, the reaction speed of the internal circuitry and liquid crystal molecules slows down. This is primarily because higher temperatures increase the resistance to electron movement and may trigger subtle changes in material properties. Therefore, rising temperatures not only increase the heat dissipation burden on the touch display module itself but also directly affect its response speed, potentially leading to a decrease in image refresh rate and color performance, thus impacting the user's visual experience.

[0003] For handheld devices such as mobile phones, users can directly sense their temperature by holding the device and thus cool it down. However, some users are not sensitive to temperature changes and cannot cool it down in time, which can easily lead to the touch display module overheating.

[0004] In addition, for in-vehicle terminals such as car head units, users cannot keep their hands on the touch display module all the time, so they cannot sense the temperature of the in-vehicle terminal in time, nor can they cool it down in time, which can easily lead to the touch display module overheating. Utility Model Content

[0005] To address the shortcomings of the prior art, this utility model provides a temperature indicator cover that indicates temperature through temperature-sensitive color change.

[0006] This utility model also provides a touch display module, including the temperature indicator cover plate mentioned above.

[0007] The technical problem to be solved by this utility model is achieved through the following technical solution:

[0008] A temperature indicator cover, comprising:

[0009] A glass cover plate having a display area and a border area, the border area surrounding the display area;

[0010] A transparent thermally conductive layer is disposed on the inner surface of the glass cover plate, and simultaneously covers the display area and the frame area;

[0011] A thermochromic ink layer is disposed on the surface of the transparent thermally conductive layer away from the glass cover, and only covers the frame area while avoiding the display area;

[0012] A border ink layer is disposed on the surface of the thermochromic ink layer away from the transparent thermal conductive layer.

[0013] Furthermore, the thickness of the thermochromic ink layer is 10-20 μm.

[0014] Furthermore, the thickness of the border ink layer is 5-15 μm.

[0015] Furthermore, the transparent thermally conductive layer is an inorganic thermally conductive coating with a thickness of 200-300 nm.

[0016] Furthermore, the transparent thermally conductive layer is an organic thermally conductive coating with a thickness of 1-2 μm.

[0017] Furthermore, the temperature indicator cover also includes an infrared cutoff layer, which is disposed on the outer surface of the glass cover and simultaneously covers the display area and the frame area.

[0018] A touch display module includes a touch panel and the aforementioned temperature indicator cover plate, wherein the touch panel is disposed on one side surface of the temperature indicator cover plate with the border ink layer.

[0019] Furthermore, the touch panel is bonded and fixed to the temperature indicator cover plate by a first thermally conductive optical adhesive layer.

[0020] Furthermore, the touch display module also includes a display panel disposed on the side surface of the touch panel away from the temperature indicator cover.

[0021] Furthermore, the display panel is bonded and fixed to the touch panel by a second thermally conductive optical adhesive layer.

[0022] This invention has the following beneficial effects: The temperature indicator cover plate of this invention is used in a touch display module. It consists of a transparent heat-conducting layer and a thermochromic ink layer sequentially disposed on the inner surface of the glass cover plate. The transparent heat-conducting layer rapidly transfers and diffuses the heat generated by the touch panel and display panel from the display area to the frame area, causing the temperature of the thermochromic ink layer to rise. The color of the thermochromic ink layer undergoes a reversible change after the temperature rises, specifically changing from a transparent color to another color, thus indicating the internal temperature of the touch display module. Users can observe the color change of the thermochromic ink layer to know the internal temperature of the touch display module and take timely cooling measures to prevent the touch display module from overheating. Attached Figure Description

[0023] Figure 1 A schematic diagram of the stacked structure of the temperature indicator cover plate provided by this utility model.

[0024] Figure 2 A schematic diagram of the planar structure of the temperature indicator cover provided by this utility model.

[0025] Figure 3 A schematic diagram of the stacked structure of another temperature indicator cover provided by this utility model.

[0026] Figure 4 This is a schematic diagram of the stacked structure of the touch display module provided by this utility model. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] Example 1

[0032] like Figure 1 and 2 As shown, a temperature indicator cover includes:

[0033] The glass cover 11 has a display area 111 and a frame area 112, the frame area 112 surrounding the display area 111;

[0034] A transparent heat-conducting layer 12 is disposed on the inner surface of the glass cover plate 11, and simultaneously covers the display area 111 and the frame area 112.

[0035] Thermochromic ink layer 13 is disposed on the surface of the transparent thermal conductive layer 12 away from the glass cover plate 11, and only covers the frame area 112, while avoiding the display area 111;

[0036] The border ink layer 14 is disposed on the surface of the thermochromic ink layer 13 away from the transparent thermal conductive layer 12.

[0037] This utility model's temperature indicator cover plate is used in touch display modules. It consists of a transparent heat-conducting layer 12 and a thermochromic ink layer 13 sequentially disposed on the inner surface of the glass cover plate 11. The transparent heat-conducting layer 12 rapidly transfers and diffuses the heat generated by the touch panel and display panel from the display area 111 to the frame area 112, causing the temperature of the thermochromic ink layer 13 to rise. The color of the thermochromic ink layer 13 undergoes a reversible change after the temperature rises, for example, changing from transparent to opaque, thus indicating the internal temperature of the touch display module. Users can observe the color change of the thermochromic ink layer 13 to know the internal temperature of the touch display module and take timely cooling measures to prevent the touch display module from overheating.

[0038] The color-changing principle of the thermochromic ink layer 13 is mainly based on the properties of thermosensitive materials. Thermosensitive materials undergo physical or chemical changes within a specific temperature range, resulting in a color change. Specifically, the thermochromic ink layer 13 typically consists of two pigments: a base pigment that is insensitive to temperature, and a color-changing pigment that is sensitive to temperature. At low temperatures, the two pigments mask each other, causing the ink to exhibit one color; while at high temperatures, the color-changing pigment changes color, causing the ink to exhibit another color.

[0039] In this embodiment, the thickness of the thermochromic ink layer 13 is 10-20μm. It is transparent at room temperature and is one of the non-transparent colors such as red, blue or green at high temperature. The higher the temperature, the darker the color.

[0040] The border ink layer 14 provides a base color for the border area 112 of the glass cover 11. When the thermochromic ink layer 13 is transparent, the border area 112 of the glass cover 11 displays the same color as the border ink layer 14. When the thermochromic ink layer 13 is opaque, the border area 112 of the glass cover 11 displays the same color as the thermochromic ink layer 13. The color of the border ink layer 14 should be different from the color of the thermochromic ink layer 13 when it changes to opaque, and the greater the color difference, the better, so that users can distinguish them.

[0041] In this embodiment, the thickness of the border ink layer 14 is 5-15μm. In addition to conventional black ink, colored inks such as red ink, blue ink, or green ink can also be used.

[0042] The transparent thermally conductive layer 12 is an inorganic thermally conductive coating, such as an aluminum oxide coating, an aluminum nitride coating, a silicon carbide coating, or a magnesium oxide coating, etc., which is formed on the inner surface of the glass cover plate 11 by means of magnetron sputtering, vacuum evaporation, or chemical vapor deposition; the thickness of the inorganic thermally conductive coating is 200-300nm.

[0043] The transparent thermally conductive layer 12 is an organic thermally conductive coating, such as an organosilicon thermally conductive coating or a polyurethane thermally conductive coating. It is formed by uniformly mixing thermally conductive fillers in a certain proportion in a transparent organic adhesive material, and then forming a film on the inner surface of the glass cover plate 11 by roller coating, spraying or printing. The thickness of the organic thermally conductive coating is 1-2 μm.

[0044] Preferably, Figure 3 As shown, the temperature indicator cover also includes an infrared cutoff layer 15, which is disposed on the outer surface of the glass cover 11 and simultaneously covers the display area 111 and the frame area 112.

[0045] Because infrared radiation has a thermal effect, infrared radiation from the external environment can pass through the glass cover plate 11 and cause the temperature of the thermochromic ink layer 13 to rise, thereby affecting the thermochromic ink layer 13's ability to sense the internal temperature of the touch display module. The temperature indicator cover plate of this utility model provides an infrared cutoff layer 15 on the outer surface of the glass cover plate 11, using the infrared cutoff filter film layer to block infrared radiation from the external environment, so as to avoid the infrared radiation from the external environment affecting the thermochromic ink layer 13 and improve the accuracy of sensing the internal temperature of the touch display module.

[0046] The infrared cutoff layer 15 may be, but is not limited to, a magnesium fluoride coating, a zirconium oxide coating, or a titanium dioxide coating, with a thickness of 100-200 nm, and is formed on the outer surface of the glass cover plate 11 by means of magnetron sputtering, vacuum evaporation, or chemical vapor deposition.

[0047] Example 2

[0048] like Figure 4 As shown, a touch display module includes a touch panel 3 and a temperature indicator cover plate 1 as described in Embodiment 1. The touch panel 3 is disposed on one side surface of the temperature indicator cover plate 1 with the border ink layer 14.

[0049] Preferably, the touch panel 3 is bonded and fixed to the temperature indicator cover plate 1 by the first thermally conductive optical adhesive layer 2, so as to quickly transfer the heat generated by the touch panel 3 to the temperature indicator cover plate 1 through the first thermally conductive optical adhesive layer 2.

[0050] The touch display module also includes a display panel 5, which is disposed on the side surface of the touch panel 3 away from the temperature indicator cover plate 1.

[0051] Preferably, the display panel 5 is bonded and fixed to the touch panel 3 by the second thermally conductive optical adhesive layer 4, so that the heat generated by the display panel 5 can be quickly transferred to the touch panel 3 through the second thermally conductive optical adhesive layer 4, and then the heat can be transferred to the temperature indicator cover plate 1 through the first thermally conductive optical adhesive layer 2.

[0052] 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 temperature indicating cover plate, characterized in that, include: A glass cover plate having a display area and a border area, the border area surrounding the display area; A transparent thermally conductive layer is disposed on the inner surface of the glass cover plate, and simultaneously covers the display area and the frame area; A thermochromic ink layer is disposed on the surface of the transparent thermally conductive layer away from the glass cover, and only covers the frame area while avoiding the display area; A border ink layer is disposed on the surface of the thermochromic ink layer away from the transparent thermal conductive layer.

2. The temperature indicating cover plate according to claim 1, characterized in that, The thickness of the thermochromic ink layer is 10-20 μm.

3. The temperature indicating cover plate according to claim 1, characterized in that, The thickness of the border ink layer is 5-15 μm.

4. The temperature indicating cover plate according to claim 1, characterized in that, The transparent thermally conductive layer is an inorganic thermally conductive coating with a thickness of 200-300 nm.

5. The temperature indicating cover plate according to claim 1, characterized in that, The transparent thermally conductive layer is an organic thermally conductive coating with a thickness of 1-2 μm.

6. The temperature indicating cover plate according to claim 1, characterized in that, The temperature indicator cover also includes an infrared cutoff layer, which is disposed on the outer surface of the glass cover and covers both the display area and the frame area.

7. A touch display module, characterized in that, It includes a touch panel and the temperature indicator cover plate as described in claim 1, wherein the touch panel is disposed on one side surface of the temperature indicator cover plate with the border ink layer.

8. The touch display module according to claim 7, characterized in that, The touch panel is attached and fixed to the temperature indicator cover plate by a first thermally conductive optical adhesive layer.

9. The touch display module according to claim 7, characterized in that, The touch display module also includes a display panel, which is disposed on the side surface of the touch panel away from the temperature indicator cover.

10. The touch display module according to claim 9, characterized in that, The display panel is bonded and fixed to the touch panel by a second thermally conductive optical adhesive layer.

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